Abstract
A magnetic safety device for food processing machines includes a motor block containing a motor axis, a processing cuvette incorporating a paramagnetic transmitter, and a cover. A rotary downholder rotates on the cover through an opening-closing axis and incorporates an insertion mouth. There is a magnetic detector existing in the motor block and having a tilting positioner body which at one end has a permanent magnet and at the opposite end a rotating bushing capable of receiving the opening-closing axis. In the broken central part of the tilting positioner body, there is at least one abutting protrusion which in its free rotation abuts against at least one abutting and pushing projection of the rotating downholder.
Claims
1. A magnetic safety device for food processing machines, comprising: a motor block containing a motor axis, a processing cuvette, incorporating a paramagnetic transmitter, a cover, a rotary downholder on said cover rotates through an opening-closing axis and incorporates an insertion mouth, a magnetic detector existing in the motor block, a tilting positioner body which at one end has a permanent magnet and at the opposite end a rotating bushing capable of receiving the opening-closing axis, and at least one abutting protrusion in the broken central part of the tilting positioner body which in its free rotation abuts against at least one abutting and pushing projection of the rotating downholder.
2. The magnetic safety device for food processing machines, according to claim 1, further comprising: more than one magnetic detector in the motor block facing the paramagnetic transmitter in different angular positions of the processing cuvette with respect to the motor block.
3. The magnetic safety device for food processing machines, according to claim 1, wherein the magnetic detector is comprised of two diametrically opposed ones.
4. The magnetic safety device for food processing machines, according to claim 1, wherein the abutting and pushing projection is comprised of two.
5. The magnetic safety Device for food processing machines, according to claim 1, wherein the opening and closing axis is comprised of a removable pin and an intermediate bushing.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0015] In order to better understand the nature of the invention, an arrangement is presented in the attached drawings which is merely illustrative and non-limiting.
[0016] FIG. 1 shows a longitudinal section view of the food processing machine (1), in the 53° and 60 mm opening position of the rotating downholder (5a), with respect to the insertion mouth (5c) of the cover (5) and the processing cuvette (3): The motor block (2) is also observed, which incorporates the magnetic detectors (6) in its upper part, as well as the paramagnetic transmission shaft (7) that is attached to the processing cuvette (3) and incorporating the processing accessory (8), and this is inserted into the drive shaft (10). In addition, a detail view is presented in which are shown; the tilting positioner body (4), which incorporates the permanent magnet (4a), and which in its broken central part (4d) contains the abutting protrusions (4b) that are in contact with the abutting and pushing projections (5b). Likewise, the removable pin (5d) housed axially in the intermediate bushing (5e) and the opening-closing axis (9) can be seen, in which the elements described rotate. Finally, a detailed view is shown, in this case in perspective, of the tilting positioner body (4) composed of a permanent magnet (4a) and abutting protrusions (4b) housed in the broken central part (4d) and attached to the turning bushing (4c) of the tilting positioner body (4).
[0017] FIG. 2 shows a longitudinal sectional view of the food processing machine (1), in the opening-closing position and specifically at 50° of opening of the rotating downholder (5a) with respect to the insertion mouth (5c) of the cover (5) and the processing cuvette (3) housed on the motor block (2), which incorporates the magnetic detectors (6). The paramagnetic drive shaft (7) attached to the processing cuvette (3) and the processing accessory (8) inserted into the drive shaft (10) and within the processing cuvette (3) can also be observed. In addition, a detail view is presented in which are shown; the tilting positioner body (4) which, by having its abutting protrusions (4b) in contact with the abutting and pushing protrusions (5b), direct the magnetic force of the permanent magnet (4) towards the paramagnetic transmitter (7) which will allow for magnetic connection without being fully aligned with each other. The removable pin (5d) is also observed, housed axially in the intermediate bushing (5e) and opening-closing axis (9), wherein all the elements described rotate.
[0018] FIG. 3 shows a longitudinal section view of the food processing machine (1), in the intermediate opening-closing position and specifically at 27° of opening of the rotating downholder (5a), with respect to the insertion mouth (5c) the cover (5) and the processing cuvette (3) mounted on the motor block (2) incorporating the magnetic detectors (6). The paramagnetic transmission shaft (7) attached to the processing cuvette (3), the processing accessory (8) housed in the processing cuvette (3) that is inserted into the motor axis (10) and finally, a detail view showing; tilting positioner body (4), incorporating the permanent magnet (4a) fully aligned vertically with the paramagnetic transmitter axis (7), since the abutting protuberances (4b) are in contact with the abutting and pushing projections (5b) maintaining the alignment of the tilting positioner body (4). The removable pin (5d) housed axially in the intermediate bushing (5e) and the opening-closing axis (9) can also be seen, in which all the elements described rotate.
[0019] FIG. 4 shows a longitudinal section view of the food processing machine (1), in the completely closed position with the rotating downholder (5a) at 0° with respect to the insertion mouth (5c) of the cover (5) and the processing cuvette (3) that is incorporated in the upper part of the motor block (2), which in turn incorporates the magnetic detectors (6). The paramagnetic transmission shaft (7) attached to the processing cuvette (3) is also observed, which also incorporates the processing accessory (8) all inserted into the motor axis (10). Finally, a detail view in which are shown; the tilting positioner body (4), which incorporates the permanent magnet (4a) vertically aligned with the paramagnetic transmitter axis (7) by the action of gravity and by magnetic attraction between them, without being in contact the abutting protuberances (4b) with the abutting and pushing projections (5b). Also, the removable pin (5d) housed axially in the intermediate bushing (5e) is observed and generates the opening-closing axis (9), wherein the elements described rotate. Furthermore, it is observed that the possible outward rotation of the tilting positioner body (4) is limited by the configuration of the cover that acts as a stop at this moment for the rotation of the tilting positioner body (4).
[0020] FIG. 5 shows an exploded view of the food processing machine (1) in the 0° full closing position of the cover (5) with respect to the insertion mouth (5c), and comprising an motor block (2) in which the magnetic detectors (6) and the motor axis (10) are housed diametrically opposed to each other by means of which the processing cuvette (3) is attached, which consists of an outlet mouth (3a), and which contains attached the paramagnetic transmitter (7). On the other hand, to said processing cuvette (3) is vertically coupled the cover (5) consisting of a rotary downholder (5a) and an insertion mouth (5c), said elements being articulated through an opening-closure shaft (9) constituted by a removable pin (5d) housed in an intermediate bushing (5e). In addition, between the lower part of the cover (5) (not visible in FIG. 5) and the processing cuvette (3), the processing accessory (8) is housed. Finally, a view shown in detail of the tilting positioner body (4) comprises a permanent magnet (4a) and abutting protuberances (4b) housed in the broken central part (4d) and which is attached to the rotation bushing (4c) of the tilting positioner body (4).
[0021] FIG. 6 shows a longitudinal sectional view of the food processing machine (1), in the fully closed position and being a processing cuvette (3) in a different angular position to the other Figures and in order to show the reversibility of the machine by turning the processing cuvette (3) together with the cover (5) and its elements. It can be seen in this Figure that more than one magnetic detector (6) is foreseen in the motor block (2), one of them facing the paramagnetic transmitter (7), thus allowing the activation of the machine and the output of the processed food in different positions through the outlet mouth (3a) of the processing cuvette (3).
[0022] The following references are indicated in these Figures:
[0023] 1. Food processing machine
[0024] 2. Motor block
[0025] 3. Processing cuvette
[0026] 3a. Outlet mouth
[0027] 4. Tilting positioner body
[0028] 4a. Permanent magnet
[0029] 4b. Abutting protuberance
[0030] 4c. Rotating bushing.
[0031] 4d. Broken central part
[0032] 5. Cover
[0033] 5a. Rotating downholder
[0034] 5b. Abutting and pushing projection
[0035] 5c. Insertion mouth
[0036] 5d. Removable pin
[0037] 5e. Intermediate bushing
[0038] 6. Magnetic detector
[0039] 7. Paramagnetic transmitter
[0040] 8. Processing accessory
[0041] 9. Opening-closing axis
[0042] 10. Motor axis
DETAILED DESCRIPTION OF THE INVENTION
[0043] With regard to the above-listed drawings and references, a preferred mode of execution is illustrated in the attached drawings of the object of the invention referred to a magnetic device for the safety of food processing machines (1), which are constituted by a motor block (2) containing a drive shaft (10), a processing cuvette (3), which incorporates a paramagnetic transmitter (7) and a cover (5) on which a rotary downholder (5a) rotates through an opening-closing axis (9) and which incorporates an insertion mouth (5c), and there being in the motor block (2) a magnetic detector (6), having a tilting positioner body (4) that at one end has a permanent magnet (4a) and at the opposite end a rotating bushing (4c) capable of receiving the opening-closing axis (9), and in the broken central part (4d) of the tilting positioner body (4) contains at least one abutting protrusion (4b) that in its free rotation abuts against at least one abutting and pushing projection (5b) of the rotary downholder (5a).
[0044] As can be seen in FIG. 1, the rotary downholder (5a) of the food processing machine (1) is in an angular opening position of 53°, with respect to the insertion mouth (5c) of the processing cuvette (3), that is, in the maximum opening position of the rotary downholder (5a) with the machine in operation (exactly less than 53° with respect to the insertion mouth (5c) of the processing cuvette (3)) and fulfilling the requirements of the aforementioned standard, EN 1678:1998+A1:2010: “Machinery for food processing. Vegetable cutting machines. Safety and hygiene requirements” which establishes a maximum opening between the rotary downholder (5a) of the cover (5) and the insertion mouth (5c), of 60 mm, when the machine cannot be in operation. Thus, in this total opening of the food processing machine (1), its safety device acts preventing its operation, since the abutting and pushing projections (5b) are in contact with the abutting protuberances (4b) of the tilting positioner body (4), preventing the tilting positioner body (4) from having rotational freedom, due to the force of gravity and being inserted in the opening-closing axis (9) by means of the removable pin (5d) through the rotating bushing (4c), and preventing its orientation and alignment with the paramagnetic transmitter (7) and therefore, the activation of the motor axis (10) activating the processing accessory (8). Thanks to the rotating or tilting constitution of the tilting positioner body (4) and its guidance and stop 10 through its abutting protuberances (4b), it is possible to limit the free rotation of the latter, preventing its orientation and magnetic connection when its use would be unsafe for the user (at maximum opening of the rotary downholder (5a). This is due to the connection of the machine's activation of the orientation or alignment of the permanent magnet (4a) to the paramagnetic transmitter (7) and this to the magnetic detectors (6), and, as shown in FIG. 1, the rotary downholder (5a) and the tilting positioner body (4) are linked to the same opening-closing axis (9), turning both on the same axis but being limited and directed the free rotation of the tilting positioner body (4), which falls by gravity, and due to its abutting protrusions (4b) of the broken central part (4d), which make contact with the abutting and pushing protrusion (5b) of the rotating downholder (5a) preventing alignment and, thus, undesired activation of the machine in an insecure opening of 60 mm. Thus, when the food to be processed is introduced, the rotary downholder (5a) is at an angle of between 180° and 53° with respect to the insertion mouth (5c) of the processing cuvette (3). On the contrary, when the rotation and consequent lowering of the rotary downholder (5a) to <53° begins, this pushes the food towards the processing accessory (8) and the machine is activated. Thus, during the angular path of closing of the rotary downholder (5a) with respect to the insertion mouth (5c) of the processing cuvette (3), from less than 53°, the food processing machine (1) is in operation, that is, the motor axis (10) rotates and applies rotary movement to the processing accessory (8). This is because the magnetic detector (6) is detecting the vertical orientation of the permanent magnet (4a) with the paramagnetic transmitter (7), and, despite not being completely aligned and because of its magnetic capacity it enters in contact between them due to the rotation of the tilting positioner body (4) with the consequent activation of the machine, but guaranteeing its safety.
[0045] This can be seen in FIG. 2, as an illustrative example of the activation of the machine without the permanent magnet (4a) of the tilting positioner body (4) being fully aligned with the paramagnetic transmitter (7), which will occur from <53° to <27° with respect to the insertion mouth (5c) of the processing cuvette (3). Thus, in this FIG. 2 it can be observed that with the mere orientation of the permanent magnet (4a) of the tilting positioner body (4) with the paramagnetic transmitter (7), the machine will be activated since, from <53°, the magnetic detector (6) housed in the motor block (2) detects the permanent magnet 5 (4a) oriented to the paramagnetic transmitter (7) since all the activation elements are sufficiently oriented and magnetically connected. This is due to the fact that the abutting and pushing projections (5b) are in contact with the abutting protrusions (4b) of the tilting positioner body (4), blocking the free rotation of the tilting positioner body (4) and orienting the tilting positioner body (4) towards the paramagnetic transmitter (7). Thus, the motor axis (10) will rotate beforehand, that is, the permanent magnet (4a), the paramagnetic transmitter (7) and magnetic detector (6) will be magnetically connected, activating the machine beforehand and maximizing the work capacity of the machine with optimum safety for the user.
[0046] In the intermediate opening shown in FIG. 3 to 27°, the abutting and pushing projections (5b) are in contact with the abutting protuberances (4b) of the tilting positioner body (4). These block the free rotation of the tilting positioner body (4), guiding the tilting positioner body (4) to the alignment of the permanent magnet (4a) with the paramagnetic transmitter (7), which will mean the activation of the machine without the rotary downholder (5a) since the machine is active from <53° of the rotary downholder (5a) with respect to the insertion mouth (5c). Likewise, it can be seen in FIG. 3 that when the rotating downholder (5a) is located in the intermediate opening position of 27° with respect to the insertion mouth (5c) of the processing cuvette (3), the magnetic detector (6) housed in the motor block (2) detects that the permanent magnet (4a) of the tilting positioner body (4) is perfectly vertically aligned with the paramagnetic transmitter (7) attached in the processing cuvette (3), there being the maximum magnetic field between them and the consequent operation of the food processing machine (1) without the need for a complete closure of the rotary downholder (5a).
[0047] Therefore, there will be a rapid and almost simultaneous activation at the beginning of the rotation of the rotary downholder (5a) in the closure of the food processing machine (1), all its activation elements being sufficiently oriented (at less than 53°) or perfectly aligned (at 27°) and magnetically connected; permanent magnet (4a) and paramagnetic transmitter (7) which is detected by the magnetic detector (6), maximizing the worktime of the food processing machine (1) with optimum safety for the user. This is mainly due to the tilting configuration of the tilting positioner body (4) housing the permanent magnet (4a) and because its tilt or rotation is not linked to the rotation of the rotary downholder (5a) and also to the guidance that is performed of the tilting positioner body (4) with the abutting and pushing projection (5b) that will allow the permanent magnet (4a) to be oriented beforehand or aligned in its free rotation with the paramagnetic transmitter (7) and thus also detected beforehand by the magnetic detector (6), and without the rotary downholder (5a) being completely closed. Furthermore, with the configuration of the tilting positioner body (4) it is ensured that the maximum surface area of the permanent magnet (4a) is oriented to the paramagnetic transmitter (7) thanks to the angular configuration of the broken central part (4d) of the tilting positioner body (4), which is reflected in the detail view of FIG. 5 and allowing greater orientation of the surface of the permanent magnet (4a) and therefore its magnetic capacity, thereby remaining the paramagnetic transmitter (7) oriented beforehand in the opening-closing rotation of the rotary downholder (5a) and detected beforehand by the magnetic detector (6).
[0048] With the complete closure of the rotary downholder (5a), being at 0° with respect to the cover (5) and as shown in FIG. 4, the abutting and pushing projections (5b) are no longer in contact with the abutting protuberances (4b) of the tilting positioner body (4), the machine being operational, since the permanent magnet (4a) of the tilting positioner body (4) is vertically aligned to the paramagnetic transmitter (7) due to the force of gravity and free rotation thereof on the opening-closing axis (9). With all the above-mentioned, an additional operating range is achieved in the closing of the rotating downholder (5a) from <53° of opening or from <60 mm of opening, obtaining a higher working efficiency of the food processing machine (1), maintaining user safety.
[0049] As shown in FIG. 6, another characteristic advantage of the invention is that the food processing machine (1) is reversible, i.e., the processing cuvette (3) may be located at different angular positions. For this reason, in the motor block (2) it is foreseen that there be more than one magnetic detector (6), preferably two diametrically opposed to carry out the reversibility of the food processing machine (1), capable of being faced with the paramagnetic transmitter (7) with any of those magnetic detectors (6) and in different angular positions of the processing cuvette (3) with respect to the motor block (2). In summary, thanks to the addition of magnetic detectors (6) arranged in an angular manner, the user will be able to rotate the processing cuvette (3), allowing the processed food to exit in different positions through the outlet mouth (3a) of the processing cuvette (3), providing versatility in the machine position and ergonomics in the workplace without sacrificing the activation of the safety device.
[0050] Thus, the outlet mouth (3a) of the processing cuvette (3), through which the processed food will be discharged, will be located where it is most convenient depending on the specific location of the machine or the location of the operator who uses it.
[0051] In order to ensure the correct orientation or vertical alignment of the permanent magnet (4a) with the paramagnetic transmitter (7) the presence preferably of two abutting and pushing projections (5b) of the cover (5) is foreseen so that if one deteriorates, the other may function.
[0052] As can be seen in FIG. 5, another characteristic advantage of the invention is that all the elements of the cover (5); rotating downholder (5a), removable pin (5d), intermediate bushing (5e) are removable, in the same manner as the tilting positioner body (4) and permanent magnet (4a) and this is because all these elements are linked by opening-closing axis (9) and are joined by means of a removable pin (5d) that is fixed by pressure or threaded with the intermediate bushing (5e). In this manner, all the elements that make up the cover (5) can be easily disassembled for cleaning and replacement, this being a great advantage because, in professional kitchens work tools are cleaned once a day when these foods are in contact with food products.
[0053] Moreover, the processing cuvette (3) is also removable with respect to the block motor (2) and this is due to its insertion through the motor axis (10), which assists complete cleaning and hygiene of the food processing machine (1).
[0054] Variations in materials, shape, size and arrangement of the component elements, described in a non-limiting manner, do not alter the essentiality of this invention, this being sufficient to proceed to its reproduction by an expert.
