Manual cutting machine

Abstract

A manual cutting machine includes a base plate. A front support and a rear support are fixedly arranged at two ends of the base plate. Sliding rods are mounted between the front support and the rear support. A slider is disposed around the sliding rods. A connecting block is hinged to the slider. A blade and a presser foot are connected to the bottom of the connecting rod. A push rod is connected to the top of the connecting block. The tail of the push rod is angled relative to the push rod. When the manual cutting machine is used for cutting and fracturing a board, motions of arms are reduced, and the motion range of an operator is narrowed, so that the operator can use the machine more easily and effortlessly. Meanwhile, oil can be added into an oil can to lubricate the slider in the using process.

Claims

1. A manual cutting machine, comprising a base plate, wherein a front support and a rear support are fixedly arranged at two ends of the base plate, and sliding rods are mounted between the front support and the rear support; and a slider is disposed around the sliding rods, a connecting block is hinged to the slider, a blade and a presser foot are connected to a bottom of the connecting block, a push rod is connected to a top of the connecting block, and an angle is formed between a tail of the push rod and the push rod; wherein a second rotary shaft penetrates through the presser foot and the connecting block, the presser foot rotates around the second rotary shaft and is provided with magnets, the connecting block is provided with an iron sheet which is attracted by the magnets, and a limiting plate is arranged at a bottom of the slider, so that when the push rod is rotated upwards away from the base plate until the presser foot abuts against the limiting plate, the magnets are separated from the iron sheet and then the presser foot rotates downward around the second rotary shaft towards the bottom plate.

2. The manual cutting machine according to claim 1, wherein an oil can is connected to a top of the slider in a threaded manner, an oil passage and wool felt are arranged in the slider, the oil passage is communicated with the oil can and the wool felt, and the oil can is provided with a switch.

3. The manual cutting machine according to claim 1, wherein the sliding rods include a left cylindrical sliding rod and a right cylindrical sliding rod, a left bearing and a right bearing are arranged in the slider and are respectively disposed around the left cylindrical sliding rod and the right cylindrical sliding rod, and the left bearing and the right bearing are linear bearings.

4. The manual cutting machine according to claim 1, wherein a rubber cushion or a spongy cushion is arranged on an upper surface of the base plate.

5. The manual cutting machine according to claim 1, wherein the angle ranges from 90° to 180°.

6. The manual cutting machine according to claim 1, wherein a handball is arranged at the tail of the push rod.

7. The manual cutting machine according to claim 1, wherein a first rotary shaft penetrates through the connecting block and is mounted between two sides of the slider, and the connecting block rotates around the first rotary shaft.

8. The manual cutting machine according to claim 1, wherein the sliding rods are positioned and fixed between the front support and the rear support with screws.

9. The manual cutting machine according to claim 1, wherein an auxiliary presser foot is arranged at a front end of the presser foot, mounting feet are arranged on two sides of the auxiliary presser foot and are clamped to the front end of the presser foot, and the auxiliary presser foot is detachable.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The present invention is further expounded below with reference to the accompanying drawings.

(2) FIG. 1 is a front view of a manual cutting machine of the present invention, wherein the circle showing an area that is shown in enlarged view in FIG. 5;

(3) FIG. 2 is a top view of the manual cutting machine in FIG. 1;

(4) FIG. 3 is an exploded view of the manual cutting machine of the present invention;

(5) FIG. 4 is an exploded view of a connecting block, a presser foot and a blade of the present invention;

(6) FIG. 5 is an enlarged view of an area shown in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

(7) As shown in FIGS. 1-4, a manual cutting machine comprises a base plate 1. A rubber cushion 12 is arranged on the upper surface of the base plate 1, and a board is placed on the rubber cushion 12 to be prevented from moving in the cutting process, so that irregular cut faces of the board are avoided. A front support 2 and a rear support 3 are fixedly arranged at two ends of the base plate 1. A left cylindrical sliding rod 401 and a right cylindrical sliding rod 402 are mounted between the front support 2 and the rear support 3. A slider 5 is disposed around the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402. A left bearing 1301 and a right bearing 1302 are arranged in the slider 5 and are respectively disposed around the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402. The slider 5 is disposed around the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402 through the left bearing 1301 and the right bearing 1302, and the stability of the slider 5 is improved by the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402. The left bearing 1301 and the right bearing 1302 are both linear bearings, so that the frictional force between the slider 5 and the left and right cylindrical sliding rods 401 and 402 is reduced.

(8) A connecting block 6 is hinged to the slider 5, and a blade 8 and a presser foot 7 are connected to the bottom of the connecting block 6. A push rod 9 is connected to the top of the connecting block 6. A handball 10 is arranged at the tail of the push rod 9, and an angle is formed between the handball and the tail of the push rod 9, ranging from 90° to 180°. The push rod 9 pushes the slider 5 to horizontally move on the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402 so as to drive the connecting block 6, the blade 8 and the presser foot 7 to move, and the blade 8 cuts the board placed on the base plate 1 along the sliding rods. The push rod 9 can be held by an operator by means of the angle and handball 10 at the tail of the push rod 9, so that the manual cutting machine can be used more comfortably. A first rotary shaft 14 penetrates through the connecting block 6 and is mounted between two sides of the slider 5. The connecting block 6 rotates between the two sides of the slider 5, so that the operator can rotate the push rod 9 by moving the hand joints to drive the blade 8 and the presser foot 7 to rotate without drastically swinging the shoulder joints.

(9) A second rotary shaft 16 penetrates through the presser foot 7 and the connecting block 6, and the presser foot 7 rotates around the second rotary shaft 16. Magnet mounting holes 701 are formed in two sides of the presser foot 7, and magnets 702 are mounted in the magnet mounting holes 701. An iron sheet 17 is fixed to the connecting block 6 and comprises an iron sheet mounting plate 1701 and an iron sheet body 1702, wherein the iron sheet mounting plate 1701 is fixed to the connecting block 6 with screws. The push rod 9 is horizontally moved rapidly, and then the presser foot 7 is attracted to the bottom of the iron sheet body 1702 under the effect of inertia and a magnetic force from the magnets 702. A limiting plate 18 is arranged at the bottom of the slider 5. When the push rod 9 drives the connecting block 6 to rotate upwards by a certain angle, the presser foot 7 abuts against the limiting plate 18, then the magnets 702 are separated from the iron sheet body 1702, and the presser foot 7 falls down around the second rotary shaft 16. The push rod 9 can be moved or rotated to change the position of the presser foot 7, so that usage is facilitated. An auxiliary presser foot 19 is arranged at the front end of the presser foot 7, and mounting feet 20 are arranged on two sides of the auxiliary presser foot 19. When the auxiliary presser foot 19 is mounted, the mounting feet 20 are clamped to the front end of the presser foot 7. When the auxiliary presser foot 19 is disassembled, one mounting foot 20 is released. Because the auxiliary presser foot 19 is narrower than the presser foot, the auxiliary presser foot 19 is suitable for narrow boards such as mosaic tiles.

(10) An oil can 11 is connected to the top of the slider 5 in a threaded manner. An oil passage (no shown) is formed in the slider 5. The left bearing 1301 and the right bearing 1302 are provided with wool felt (not shown). The oil passage is communicated with the oil can 11 and the wool felt. A switch 15 is arranged at the top of the oil can 11. When the switch 15 is shifted to one side, oil in the oil can 11 is automatically delivered onto the wool felt via the oil passage, and then the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402 are lubricated by the wool felt, so that the frictional force between the slider 5 and the left and right cylindrical sliding rods 401 and 402 is reduced, and the connecting block 6 can move on the left cylindrical sliding rod 401 and the right cylindrical sliding rod 402 more smoothly. When the switch 15 is shifted to the other side, oil in the oil can 11 is stopped from being delivered onto the wool felt.

(11) During the operation of the manual cutting machine of the present invention, a worker holds the handball 10 by hand to rapidly move the push rod 9, and then the presser foot 7 is attracted to the bottom of the iron sheet body 1702. The push rod 9 is pushed to drive the blade 8 to move to the other end of the board placed on the rubber cushion 12, then the push rod 9 is rotated to drive the connecting block 6 to incline upwards by an angle to align the cutting edge of the blade 8 to the corresponding position of the board, and finally, the blade 8 is forced to move to the other end of the board, so that cutting of the board is completed. After the board is cut, the push rod 9 is rotated upwards to drive the presser foot 7 to abut against the limiting plate 18, and then the presser foot 7 falls down around the second rotary shaft 16. The push rod 9 is rotated downwards to fracture the board through the presser foot 7, so that the board is partitioned.

(12) The above embodiments are only specific ones of the invention, and the technical characteristics of the invention are not limited to these specific embodiments. Any simple variations, equivalent substitutes or modifications achieved based on the invention to settle the same technical issues and to fulfill the same technical effects should also fall within the protection scope of the invention.