Abstract
An apparatus for producing an adhesive-bound printed product comprises an endlessly circulating transport system where a transport clamp holds a clamped-in printed product with the aid of a first adjusting mechanism that generates a first movement component while the printed product circulates through the apparatus. To favorably influence an opening and/or closing movement depending on the printed product), the apparatus comprises a second adjusting mechanism to be selectively activated and to generate in an activated position a second movement component that acts upon a swivel arm. The second movement component is oriented counter to an upward movement of the control arm induced by the first movement component. The counter-oriented movement components are compensated via a second mechanical spring which supports the swivel arm relative to the control arm.
Claims
1. An apparatus for producing an adhesive-bound printed product, comprising: a transport system including a plurality of transport clamps for conveying a printed product, respectively clamped into one transport clamp, which circulate endlessly along a cam track, wherein each transport clamp comprises a clamping element attached to a swivel arm that can be moved via the swivel arm back and forth between an open position and a clamping position, the transport system further comprising a control arm that is connected at a first end via a spring box to the swivel arm and via a second end to a first adjusting mechanism, wherein the control arm transmits a first movement component generated by the first adjusting mechanism via the spring box to the swivel arm and the first movement component is oriented in a direction where the adjustable clamping element is swiveled from the closed position to the open position, wherein a first mechanical spring is arranged in the spring box and exerts in the clamping position of the clamping element a clamping force onto the clamped in printed product via a tension rod that is arranged in the spring box and via the swivel arm, and wherein the tie rod in the clamping position of the clamping element compensates for different thicknesses of the clamped-in printed product between the swivel arm and the control arm via the tension rod connected to the swivel arm and a compression or extension of the first mechanical spring, the apparatus further including a second, selectively activatable, adjusting mechanism which, in an activated position, generates a second movement component that acts upon the swivel arm, wherein the second movement component is directed counter to the upward movement of the control arm induced by the first movement component and wherein the opposite directed movement components are compensated with the aid of a second mechanical spring that supports the swivel arm relative to the control arm.
2. The apparatus according to claim 1, wherein the second mechanical spring is arranged in the spring box, and the second adjusting mechanism when activated is connected via the swivel arm to a first end of the second mechanical spring and that the second mechanical spring is connected at a second end via a support plate of the tension rod to the first mechanical spring.
3. The apparatus according to claim 2, wherein the tension rod comprises a coupling rod) which, at an end facing away from the support plate is fixedly connected via a rotating joint to the swivel arm, the rotating joint is installed on a joint head which is rigidly connected to the swivel arm a position of which changes relative to the spring box during relative movements between the control arm and the swivel arm, the first mechanical spring when installed is kept in place by a perforated disk that is secured with its outer edge to a wall of the spring box, on a side facing the joint head, the coupling rod furthermore is inserted through a hole in the perforated disk, the second mechanical spring on a side facing the joint head is supported on a sleeve which extends through the hole of the perforated disk and is installed movable along the coupling rod, the sleeve in an inactivated position of the second adjusting mechanism is held by the second mechanical spring so as to be supported on an inside edge of the perforated disk and in the activated position of the second adjusting mechanism is lifted by the joint head from the inside edge of the perforated disk and is pressed counter to the spring force of the second mechanical spring into the inside space of the spring box.
4. The apparatus according to claim 1, wherein the mechanical springs travel along differing force paths.
5. The apparatus according to claim 1, wherein the second adjusting mechanism comprises a sliding track which extends only over a partial section of the circulating movement of the transport clamps and cooperates with a control roller which is rigidly connected to the swivel arm.
6. The apparatus according to claim 5, wherein the sliding track of the second adjusting mechanism is mounted in a holding device so as to be adjustable, the control roller connected to the swivel arms of the transport clamps passes the sliding track without making contact in at least one of the adjusted positions.
7. The apparatus according to claim 6, wherein the holding device) is provided with a motorized drive which can move the second adjusting mechanism.
8. The apparatus according to claim 7, wherein the motorized drive is connected to an electronic remote control.
9. The apparatus according to claim 8, characterized in that wherein the sliding track includes a running surface comprised of a shock-resistant plastic material.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The invention will now be described further with the aid of an exemplary embodiment as shown in the following figures:
[0027] FIG. 1: A view of an apparatus as seen from above;
[0028] FIG. 2: A detailed view of a transport clamp in an opening zone;
[0029] FIG. 3: A sectional view of a transport clamp with a sectional view onto the spring box;
[0030] FIGS. 4A and 4B: Enlarged detailed views of the upper and lower ends, respectively, of the spring box show in FIG. 3;
[0031] FIG. 5: The sectional view from FIG. 3, showing a different adjustment position for the first adjusting mechanism;
[0032] FIGS. 6A and 6B: Enlarged details of the upper and lower ends of the spring box shown in FIG. 4;
[0033] FIG. 7: The sectional view from FIG. 3 with yet another adjustment position for the first adjusting mechanism and a second movement component from the second adjusting mechanism; and
[0034] FIGS. 8A and 8B: Enlarged details of the upper and lower ends of the spring box shown in FIG. 7.
DETAILED DESCRIPTION OF THE INVENTION
[0035] FIG. 1 shows an apparatus 2 for producing an adhesive-bound printed product, comprising a transport system with several transport clamps 4, designed for transporting respectively one printed product 3 clamped into a transport clamp 4, which move continuously along a cam track 6, wherein each transport clamp 4 is provided with an adjustable clamping element 8 that can be moved (swiveled) alternately between an open position and a clamping position.
[0036] The swiveling of the clamping element 8 is permanently controlled by the control arm 14, shown in FIG. 2, which is connected at its first end to the spring box 24. The swivel arm 7 is positioned on the rotating axis 16, so that it can move independent of the control arm 14. The swivel arm 7 is connected via a tab, having a joint head 29 at one end, as well as a rotating joint 25 to the spring box 24. The clamping element 8 is arranged at the lower end of the swivel arm 7. At its second end, the control arm 14 is provided with a roller 12 which circulates along the cam track 6 when the transport clamp 4 circulates along the cam track 6. The cam track 6 and the roller 12 together form a first adjusting mechanism 10 for the exemplary embodiment. A double arrow indicates the ability of the control arm 14 to swivel. During a displacement of the roller 12 in a direction which deviates from the movement track of the associated transport clamp 4, it generates a first movement component M1 which is transmitted via the control arm 14 and the spring box 24 to the swivel arm 7 and which converts the movement component M1 to a swivel movement.
[0037] In FIG. 2, the clamping element 8 is shown in a partially opened position where the clamping element 8 does not yet rest on the printed product 3 surface. During a continued opening movement, it can be swiveled from this position up further in a direction of the arrow to the right, so as to release a printed product 3 conveyed by the transport clamp 4 to a removal device that is not shown further in the drawing.
[0038] The apparatus 2 comprises a second adjusting mechanism 18 for influencing the spatial position of the clamping element 8. The second adjusting mechanism 18 generates a second movement component M2 in a direction counter to the direction of the movement component generated by the first adjusting mechanism 10. In order to generate this movement component, the second adjusting mechanism 18 comprises a sliding track 20, which is embodied to extend in conveying direction of the transport clamp 4 but only over a partial section of a circulating movement of the transport clamps 4 and thus produces a corresponding second movement component M2 only along this partial section. For this, a control roller 19 runs up onto the sliding track 20 during its approach to this track and, in the process, is pushed in a direction transverse to the conveying direction of the transport clamp 4. The control roller 19 is fixedly connected to a lever arm 21 which transmits the second movement component generated by the control roller 19 to the swivel arm 7.
[0039] FIG. 3 shows a sectional view of a transport clamp 4 with a sectional view of the spring box 24. FIGS. 4A and 4B show enlarged details of the upper and lower ends of the spring box 24 shown in FIG. 3. In FIG. 3, the second adjusting mechanism 18 is in an inactive position, which is obvious from the clearance space between the surface of the sliding track 20 and the control roller 19. Accordingly, no second movement component M2 is introduced into the control of the swivel movement of the swivel arm 7. The swivel position shown in FIG. 3 of the swivel arm 7 is solely determined by the first movement component M1 of the first control mechanism 10.
[0040] With the swivel position of the swivel arm 7, shown in FIG. 3, the clamping element 8 is pressed against the surface of a printed product 3. At the position I, the distance between the clamping element 8 to the opposite arranged contact surface of the transport clamp 4 corresponds to the thickness measure 34 of the printed product 3. The contact pressure for holding the clamping element 8 against the printed product 3 follows from the force with which a tension rod 23 compresses the mechanical springs 26, 28. The mode of operation of the tension rod 23 can be seen easily with the aid of FIGS. 4A and 4B. The first part of a pressing movement of the control arm 14 initially only functions to place the clamping element 8 onto the surface of the printed product 3. However, if the control arm 14 continues its pressing movement during the second part, the swivel arm 7 bends relative to the control arm 14 with a rotational movement around the rotational axis 16 of the transport clamp 4. In the process, a support plate 30, the inside of which supports the ends of two mechanical springs 26, 28, is pulled from its previous position by the swivel arm 7 into the spring box 24, that is via a joint head 29, a rotating joint 25 and the coupling rod 22. The coupling rod 22 can rotate via the rotating joint 25, but is fixedly connected to the swivel arm 7 via the joint head 29. The distance between the support plate 30 in the pulled-in position from the original seat can be seen at Position IV in the enlarged view B in FIG. 4B. If a printed product 3 has a thicker measurement 34 than is shown in FIG. 3, the tension rod 23 must accommodate a longer remaining movement distance for the control arm 14 until the control arm 14 has reached its end position when the clamping element 8 is fitted onto the printed product 3, meaning the support plate 30 is consequently pulled deeper into the spring box 24. With thin printed products 3, the support plate 30 is pulled less deep or not at all into the spring box 24 once the transport clamp 4 closes.
[0041] The distance of the support plate 30 from its original seat in this case corresponds to the distance of the joint head 29 from its sleeve 31, which can be seen in Position II of FIG. 4A. The sleeve 31 is fitted onto the coupling rod 22, such that it can move in axial direction. In its position shown in FIG. 4A, the sleeve is pressed by the second mechanical spring 28 against the inside of a perforated disk 32, so that the distance between the outer seating ring of the sleeve 31 to the inside surface of the perforated disk 32 is equal to zero, as shown with Position III in FIG. 4A. Since no second movement component influences the swivel position of the swivel arm 7 shown in FIG. 3, there is no need to compensate for a shorted displacement path between the first and second movement components.
[0042] FIG. 5 shows the sectional view from FIG. 3, but with a changed position for the first adjusting mechanism 10 based on a first movement component M1 in the direction of opening a transport clamp 4. The second adjusting mechanism 18 remains inactive, as can be seen from the gap between the control roller 19 and the sliding track 20. Once the control arm 14 of the first adjusting mechanism 10 opens up as a result of the movement component M1, induced by said mechanism, the support plate 30 of the tension rod 23 initially moves back to its seatprovided it previously moved out of this seat during the closing of the transport clamp 4before the swivel arm 7 starts its opening movement. FIG. 5 shows the position which the swivel arm 7 occupies in that case. In Position I, the clamping element 8 remains on the surface of the printed product 3, the position of the swivel arm 7 shown in FIG. 5 has not yet changed relative to the position shown in FIG. 3. As shown with the enlarged views in FIGS. 6A and 6B, however, the support plate 30 has moved back to its seat in the spring box 24, shown with Position IV in FIG. 6B, and the distance between the joint head 29 and the front surface of the sleeve 31 is zero, as shown with the Position II in FIG. 6A. The sleeve 31 has not moved and continues to be held with its seating ring at zero distance against the perforated disk 32, as shown with the drawn-in spacing in Position III of FIG. 6A.
[0043] FIG. 7 shows the sectional view from FIG. 3 with a further changed position of the first adjusting mechanism 10 and a second movement component M2 from the second adjusting mechanism 18. FIG. 7 shows that the control roller 19 is now fitted onto the sliding track 20, so that the second adjusting mechanism 18 introduces a second movement component M2 into the movement of the swivel arm 7. As compared to the position in FIG. 5, the first adjusting mechanism 10 also has moved further in the direction of the transport clamp 4 opening. Since the support plate 30 in FIG. 5 has already reached its seat in the spring box 24 and maintains this seat even in the swivel position shown in FIG. 7, the swivel arm 7 is partially opened again as a result of the further advanced opening movement of the swivel arm 7, as shown with the Position IV in FIG. 8B, wherein this is also obvious from the meanwhile reached spacing between the clamping element 8 and the surface of the printed product 3, drawn in with position Ib in FIG. 7. However, as shown in FIG. 8A, the joint head 29 has pushed the sleeve 31 with its front into the spring box 24 during the further upward movement of the swivel arm 7, owing to the second movement component M2, so that the seating ring of the sleeve 31 is lifted off the perforated disk 32 toward the inside of the spring box 24, as shown with the distance measure at Position III in FIG. 8A. The opening movement of the swivel arm 7 is reduced by the same measure as the sleeve 31 is pushed into the spring box 24, wherein differences can also result from differently long lever arms in the swivel arm 7. The second adjusting mechanism 18, insofar as it is activated, has generated a second movement component M2 that acts upon the swivel arm 7, wherein the second movement component M2 is oriented counter to the upward movement of the control arm 14 which is induced by the first movement component M1. The counter-oriented movement components M1, M2 are compensated by the second mechanical spring 28 which supports the swivel arm 7 against the control arm 14.
[0044] FIG. 7 shows the second adjusting mechanism 18 inside a holding device 38, so as to be adjustable. Once the second adjusting mechanism 18 has been pulled back far enough so that the sliding track 20 is no longer in contact with the control roller 19, the mechanism is in a position where the second adjusting mechanism 18 no longer generates a movement component when the transport clamp 4 passes by. The apparatus 2 in that case can be operated solely with the movement component from the first adjusting mechanism 10. The holding device 38 is provided with a motorized drive 40, used to move the second adjusting mechanism 18. The motorized drive 40 is connected to an electronic remote control 42.
[0045] The invention is not restricted to the above-described exemplary embodiment. One skilled in the art can modify the described exemplary embodiment using available expert knowledge in a manner that makes sense, so as to adapt it to a concrete use.
REFERENCE LIST
[0046] 2 apparatus
[0047] 3 printed product
[0048] 4 transport clamp
[0049] 6 cam track
[0050] 7 swivel arm
[0051] 8 clamping element
[0052] 10 first adjusting mechanism
[0053] 12 roller
[0054] 14 control arm
[0055] 16 rotational axis
[0056] 18 second adjusting mechanism
[0057] 19 control roller
[0058] 20 sliding track
[0059] 21 lever arm
[0060] 22 coupling rod
[0061] 23 tension rod
[0062] 24 spring box
[0063] 25 rotating joint
[0064] 26 first mechanical spring
[0065] 28 second mechanical spring
[0066] 29 joint head
[0067] 30 support plate
[0068] 31 sleeve
[0069] 32 perforated disk
[0070] 33 seating ring
[0071] 34 thickness measure
[0072] 38 holding device
[0073] 40 motorized drive
[0074] 42 electronic remote control
[0075] M1 first movement component
[0076] M2 second movement component
