Metal door and window machining waste removing device

Abstract

The utility model relates to the technical field of metal door and window waste removing, in particular to a metal door and window machining waste removing device which comprises a bottom plate, an overturning assembly, a base, a containing assembly and a moving assembly. A base is arranged at the bottom of the bottom plate, a moving assembly is arranged on one side of the bottom plate, a storage assembly is arranged on the upper end face of the bottom plate, and a turnover assembly is arranged on the upper end face of the bottom plate. The overturning assembly comprises a first support, a second support, a third support, a fourth support, a motor, a first connecting block, a limiting block, a sliding groove, a second connecting block, a bearing plate, a fifth support, a toothed bar, a rack, a connecting piece, a telescopic rod, an air cylinder and a pressing block. A fifth support is arranged on the upper end face of the bottom plate, the inner side of the fifth support is rotationally connected with a bearing plate, and one side of the fifth support is rotationally connected with a second connecting block. By means of a clamping and overturning mode, automation of waste removal is guaranteed, the working efficiency and the safety effect on operators are effectively improved, and the practical value of the device is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal door and window waste material removal technical field especially relates to metal door and window processing waste material removal device. BACKGROUND

[0002] In the process of metal door and window processing, a large amount of waste material is often generated during the processing of metal door and window, and the removal operation is completed by stopping the processing operation and personnel cleaning, and in this process, personnel are needed to remove the metal door and window processing waste material to ensure the normal and orderly development of subsequent processing.

[0003] Most of the current metal door and window processing devices use cutting technology to process metal door and window materials, and when used, a large amount of waste material is often generated during the processing of metal door and window, which occupies the processing space, affects the work efficiency, and may also pose a danger to the safety of the operator, and the use effect is poor.

[0004] Therefore, in view of the situation that the metal door and window processing device cannot automatically remove waste material and the safety of the operator is poor, a metal door and window processing waste material removal device can be designed, which ensures the automation of waste material removal by clamping and overturning, effectively improves the work efficiency and the safety effect of the operator, and enhances the practical value of the device. INVENTION CONTENTS

[0005] In order to overcome the problem that most metal door and window processing devices generate a large amount of waste material during the processing of metal door and window, which occupies the processing space, affects the work efficiency, and may also pose a danger to the safety of the operator, and the use effect is poor.

[0006] The technical scheme of the utility model is: a metal door and window processing waste material removal device, comprising a bottom plate, a turnover assembly, a base, a storage assembly and a moving assembly; the bottom plate is provided with a base at the bottom, the bottom plate is provided with a moving assembly on one side, the moving assembly is provided with two groups, the upper end surface of the bottom plate is provided with a storage assembly, the upper end surface of the bottom plate is provided with a turnover assembly, the turnover assembly comprises a first support, a second support, a third support, a fourth support, a motor, a first connecting block, a limiting block, a sliding groove, a second connecting block, a bearing plate, a fifth support, a rack, a rack, a connecting piece, a telescopic rod, a gas cylinder and a pressing block; the upper end surface of the bottom plate is provided with a fifth support, the fifth support is provided with two groups, the inner side of the fifth support is rotatably connected with a bearing plate, one side of the fifth support is rotatably connected with a second connecting block.

[0007] Preferably, the base is mounted through the bottom of the bottom plate, the moving assembly is fixedly mounted using one side of the bottom plate, meanwhile, the storage assembly is fixedly mounted through the upper end face of the bottom plate, the first support is threadedly connected to the upper end face of the bottom plate, the second support is fixedly mounted to the inner side of the first support, the third support is threadedly connected to the upper end face of the second support, the fourth support is fixedly mounted to the upper end face of the first support, the motor is fixedly mounted to one side of the fourth support, the output end of the motor is rotatably connected to the first connecting block, the limiting block is rotatably connected to one side of the third support, the limiting block is provided with a sliding groove, the first connecting block is clamped and connected to the sliding groove, the fifth support is fixedly mounted to the upper end face of the bottom plate, the bearing plate is rotatably connected to the inner side of the fifth support, the bearing plate is connected to the fifth support through the second connecting block, one side of the second connecting block is clamped to the sliding groove, the cylinder is fixedly mounted to one side of the bearing plate, the output end of the cylinder is connected to the telescopic rod, the connecting piece is fixedly mounted to one side of the telescopic rod, the rack is fixedly mounted to one side of the connecting piece, the pinion is fixedly mounted to one side of the rack, the pinion is rotatably connected to the bearing plate, the pressing block is rotatably connected to the inner side of the pinion, so that the motor output drives the first connecting block to rotate, the first connecting block drives the limiting block to move through the sliding groove, the second connecting block rotates through the sliding groove, the bearing plate is flipped through the second connecting block, so as to realize the flipping effect, the cylinder output drives the telescopic rod, the connecting piece and the rack to expand and contract, the rack drives the pinion to rotate, the pinion drives the pressing block to rotate and press down, so as to guarantee the clamping effect, realize the clamping, flipping and waste removal effect, and enhance the practical value of the device.

[0008] Preferably, the upper end face of the bottom plate is threadedly connected to the first support, the inner side of the first support is provided with the second support, the upper end face of the first support is threadedly connected to the fourth support, and the upper end face of the second support is threadedly connected to the third support.

[0009] Preferably, one side of the fourth support is provided with the motor, the output end of the motor is rotatably connected to the first connecting block, one side of the third support is rotatably connected to the limiting block, the limiting block is provided with the sliding groove, the first connecting block is clamped in the sliding groove, and the sliding groove clamps the second connecting block.

[0010] Preferably, one side of the bearing plate is provided with the cylinder, the cylinder is provided with two groups, the output end of the cylinder is connected to one side of the telescopic rod, the telescopic rod is provided with two groups, one side of the telescopic rod is provided with the connecting piece, the connecting piece is provided with two groups, one side of the connecting piece is provided with the rack, the rack is provided with two groups, one side of the rack is provided with the pinion, the pinion is rotatably connected to the bearing plate, and the inner side of the pinion is rotatably connected to the pressing block.

[0011] As preferred, the receiving assembly comprises a box body, a first movable plate, a first hinge, a blanking plate, a second hinge, a second movable plate, a blocking piece and a detent block; the upper end face of the bottom plate is provided with the box body, one side of the box body is provided with the blanking plate, one side of the box body is provided with the first hinge, the first hinge is provided with two groups, the first movable plate is connected to one side of the box body through the first hinge, one side of the box body is provided with the second hinge, the second hinge is provided with two groups, the second movable plate is connected to one side of the box body through the second hinge, one side of the second movable plate is provided with the detent block, the detent block is provided with two groups, one side of the box body is rotatably connected with the blocking piece, and the blocking piece is provided with two groups.

[0012] As preferred, the moving assembly comprises a right-angle hinge, a first horizontal block, a second horizontal block, a universal wheel, a first protrusion, a bite block, a second protrusion, a rotating shaft, a tension spring and a third protrusion; one side of the bottom plate is threadedly connected with the right-angle hinge, the right-angle hinge is provided with two groups, the bottom of the right-angle hinge is threadedly connected with the first horizontal block and the second horizontal block, the first horizontal block is provided with two groups, the second horizontal block is provided with two groups, the bottom of the first horizontal block and the second horizontal block is provided with the universal wheel, and the universal wheel is provided with multiple groups.

[0013] As preferred, one side of the first horizontal block is provided with the first protrusion, the first protrusion is provided with two groups, one side of the first horizontal block is provided with the bite block, the bite block is provided with two groups, the rotating shaft is connected through the bite block, one side of the bite block is provided with the second protrusion, the second protrusion is provided with two groups, the outer sides of the second protrusion and the first protrusion are connected with the tension spring, the tension spring is provided with two groups, one side of the second horizontal block is provided with the third protrusion, and the third protrusion is provided with two groups.

[0014] The utility model discloses beneficial effects:

[0015] 1, the upper end surface of the base plate is threadedly connected with a first support, the inner side of the first support is fixedly installed with a second support, the upper end surface of the second support is threadedly connected with a third support, the upper end surface of the first support is fixedly installed with a fourth support, a motor is fixedly installed on one side of the fourth support, the output end of the motor is rotatably connected with a first connecting block, a limiting block is rotatably connected on one side of the third support, the limiting block is provided with a sliding groove, the first connecting block is clamped and connected with the sliding groove, a fifth support is fixedly installed on the upper end surface of the base plate, the inner side of the fifth support is rotatably connected with a bearing plate, the bearing plate is connected with the fifth support through a second connecting block, one side of the second connecting block is clamped with the sliding groove, a cylinder is fixedly installed on one side of the bearing plate, the output end of the cylinder is connected with a telescopic rod, the telescopic rod is fixedly installed with a connecting piece, one side of the connecting piece is fixedly installed with a rack, one side of the rack is fixedly installed with a toothed rod, the toothed rod is rotatably connected with the bearing plate, the inner side of the toothed rod is rotatably connected with a pressing block, so that the motor output drives the first connecting block to rotate, the first connecting block rotates to drive the limiting block to move through the sliding groove, the sliding groove moves to drive the second connecting block to rotate, the second connecting block drives the bearing plate to overturn, so as to realize the overturning effect, the cylinder output drives the telescopic rod, the connecting piece and the rack to stretch out and draw back, the rack drives the toothed rod to rotate, the toothed rod drives the pressing block to rotate and press down, so as to guarantee the clamping effect, realize the effect of clamping, overturning and removing waste materials, and enhance the practical value of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic view of the metal door and window machining waste removing device is shown.

[0017] Figure 2 A three-dimensional structure schematic view of the overturning assembly of the metal door and window machining waste removing device is shown.

[0018] Figure 3 A three-dimensional structure schematic view of the pressing block of the metal door and window machining waste removing device is shown.

[0019] Figure 4 A three-dimensional structure schematic view of the storage assembly of the metal door and window machining waste removing device is shown.

[0020] Figure 5 A three-dimensional structure schematic view of the clamping block of the metal door and window machining waste removing device is shown.

[0021] Figure 6 A three-dimensional structure schematic view of the moving assembly of the metal door and window machining waste removing device is shown.

[0022] Figure 7 A three-dimensional structure schematic view of the clamping block of the metal door and window machining waste removing device is shown.

[0023] BRIEF DESCRIPTION OF DRAWINGS 1, bottom plate; 2, base; 101, first support; 102, second support; 103, third support; 104, fourth support; 105, motor; 106, first connecting block; 107, limiting block; 108, sliding groove; 109, second connecting block; 110, bearing plate; 111, fifth support; 112, gear rod; 113, gear rack; 114, connecting piece; 115, telescopic rod; 116, air cylinder; 117, pressing block; 201, box body; 202, first movable plate; 203, first hinge; 204, blanking plate; 205, second hinge; 206, second movable plate; 207, blocking piece; 208, clamping block; 301, right-angle hinge; 302, first cross block; 303, second cross block; 304, universal wheel; 305, first protrusion; 306, biting block; 307, second protrusion; 308, rotating shaft; 309, tension spring; 310, third protrusion. DETAILED DESCRIPTION

[0024] The utility model is further explained in connection with the drawings and examples.

[0025] Please refer to Figures 1-7 The utility model provides a kind of embodiment: metal door and window processing waste removal device, including bottom plate 1, turnover subassembly, base 2, storage subassembly and moving assembly;The bottom of bottom plate 1 is provided with base 2, one side of bottom plate 1 is provided with moving assembly, moving assembly is provided with two groups, the upper end surface of bottom plate 1 is provided with storage subassembly, the upper end surface of bottom plate 1 is provided with turnover subassembly, and turnover subassembly includes first support 101, second support 102, third support 103, fourth support 104, motor 105, first connecting block 106, limiting block 107, sliding groove 108, second connecting block 109, bearing plate 110, fifth support 111, gear rod 112, gear rack 113, connecting piece 114, telescopic rod 115, air cylinder 116 and pressing block 117;The upper end surface of bottom plate 1 is provided with fifth support 111, fifth support 111 is provided with two groups, the inner side of fifth support 111 is rotatably connected with bearing plate 110, and one side of fifth support 111 is rotatably connected with second connecting block 109.

[0026] Please refer to Figures 2-5In this embodiment, the upper end face of the base plate 1 is threadedly connected to the first bracket 101. A second bracket 102 is provided inside the first bracket 101. The upper end face of the first bracket 101 is threadedly connected to the fourth bracket 104, and the upper end face of the second bracket 102 is threadedly connected to the third bracket 103. The support of the first bracket 101, second bracket 102, third bracket 103, and fourth bracket 104 ensures the normal and orderly progress of subsequent work. A motor 105 is provided on one side of the fourth bracket 104, and the output end of the motor 105 is rotatably connected to the first connecting block 106. A limit block 107 is rotatably connected to one side of the third bracket 103, and the limit block 107 has a sliding groove 108. The first connecting block 1... 06. The sliding groove 108 engages with the second connecting block 109. The motor 105 drives the first connecting block 106 to rotate, which in turn drives the limit block 107 to move. The limit block 107 then drives the second connecting block 109 to rotate, ensuring the normal and orderly operation of the work. A cylinder 116 is provided on one side of the bearing plate 110. Two sets of cylinders 116 are provided. The output end of the cylinder 116 is connected to one side of the telescopic rod 115. Two sets of telescopic rods 115 are provided. A connecting piece 114 is provided on one side of the telescopic rod 115. Two sets of connecting pieces 114 are provided. A rack 113 is provided on one side of the connecting piece 114. Two sets of racks 113 are provided. A toothed bar 11 is provided on one side of the rack 113. 2. The rack 112 and the bearing plate 110 are rotatably connected to each other, and the inner side of the rack 112 is rotatably connected to the pressure block 117; the output of the cylinder 116 drives the telescopic rod 115, the connecting piece 114 and the rack 113 to extend and retract, and the rack 113 drives the rack 112 to rotate, and the rotation of the rack 112 drives the pressure block 117 to press down, thereby achieving the clamping and fixing effect; the storage component includes a box body 201, a first movable plate 202, a first hinge 203, a feeding plate 204, a second hinge 205, a second movable plate 206, a baffle 207 and a locking block 208; the upper end surface of the base plate 1 is provided with the box body 201, the side of the box body 201 is provided with the feeding plate 204, and the side of the box body 201 is provided with the first hinge 203, the first Two sets of hinges 203 are provided. The first movable plate 202 is connected to one side of the box body 201 through the first hinge 203. A second hinge 205 is provided on one side of the box body 201. Two sets of the second hinge 205 are provided. A second movable plate 206 is connected to one side of the box body 201 through the second hinge 205. A locking block 208 is provided on one side of the second movable plate 206. Two sets of locking blocks 208 are provided. A baffle 207 is rotatably connected to one side of the box body 201. Two sets of baffles 207 are provided. By flipping the support plate 110, the waste material is collected into the box body 201 through the first movable plate 202 by the feeding plate 204. By rotating the baffle 207, the locking block 208 is engaged, thereby achieving the effect of opening and closing to collect waste material.

[0027] Please see Figures 6-7In this embodiment, the moving component includes a right-angle hinge 301, a first horizontal block 302, a second horizontal block 303, a caster wheel 304, a first protrusion 305, a locking block 306, a second protrusion 307, a pivot 308, a tension spring 309, and a third protrusion 310. A right-angle hinge 301 is threaded onto one side of the base plate 1. Two sets of right-angle hinges 301 are provided. The bottom of the right-angle hinge 301 is threaded onto a first horizontal block 302 and a second horizontal block 303. Two sets of first horizontal blocks 302 and two sets of second horizontal blocks 303 are provided. Caster wheels 304 are provided at the bottom of the first horizontal blocks 302 and the second horizontal blocks 303. Multiple sets of caster wheels 304 are provided. Utilizing the characteristics of the right-angle hinge 301, the first horizontal block 302 and the second horizontal block 303 are folded. 3 and universal wheels 304 achieve a folding effect; a first protrusion 305 is provided on one side of the first horizontal block 302, and two sets of the first protrusion 305 are provided; a biting block 306 is provided on one side of the first horizontal block 302, and two sets of the biting block 306 are provided; a pivot 308 is connected through the biting block 306; a second protrusion 307 is provided on one side of the biting block 306, and two sets of the second protrusion 307 are provided; a tension spring 309 is connected to the outer side of the second protrusion 307 and the first protrusion 305, and two sets of the tension spring 309 are provided; a third protrusion 310 is provided on one side of the second horizontal block 303, and two sets of the third protrusion 310 are provided; by pressing down the first horizontal block 302 and the second horizontal block 303, the biting block 306 engages with the third protrusion 310, and the tension spring 309 pulls, thus ensuring a self-locking effect.

[0028] When installing the box body 201, thread the box body 201 to the upper end face of the base plate 1, fix the feed plate 204 to one side of the box body 201, fix the first hinge 203 to one side of the box body 201, connect the first movable plate 202 to one side of the box body 201 through the first hinge 203, fix the second hinge 205 to one side of the box body 201, and connect the second movable plate 206 to one side of the box body 201 through the second hinge 205. The baffle 207 is rotatably connected to one side of the box body 201, and the locking block 208 is fixed to one side of the second movable plate 206, thereby ensuring that the waste is collected through the feeding plate 204. The feeding plate 204 enters the interior of the box body 201 through the first movable plate 202. By rotating the baffle 207 and locking it with the locking block 208, the waste will not escape when it is full. After the waste is full, rotating the baffle 207 will automatically slide the waste out, thus achieving the effect of collection and processing.

[0029] During movement, a right-angle hinge 301 is threaded to one side of the base plate 1. The right-angle hinge 301 is threaded to the first horizontal block 302 and the second horizontal block 303. A caster wheel 304 is fixedly installed on the bottom of the second horizontal block 303 and the first horizontal block 302. A first protrusion 305 and a biting block 306 are fixedly installed on one side of the first horizontal block 302. A pivot 308 is used to pass through and connect the biting block 306. A second protrusion 307 is fixedly installed on one side of the biting block 306. A tension spring 309 is fixedly installed on the outer side of the second protrusion 307 and the first protrusion 305. A third protrusion 310 is fixedly installed on one side of the second horizontal block 303. This ensures that pressing down the first horizontal block 302 and the second horizontal block 303 drives the biting block 306. The pivot 308 rotates and lowers the block, and the tension spring 309 pulls it, thus completing the biting effect and enhancing the practical value of the equipment.

[0030] Through the above steps, the base 2 is clearly installed on the bottom of the base plate 1, the movable component is fixedly installed on one side of the base plate 1, and the storage component is fixedly installed on the upper surface of the base plate 1. The first bracket 101 is threadedly connected to the upper surface of the base plate 1, the second bracket 102 is fixedly installed on the inner side of the first bracket 101, the third bracket 103 is threadedly connected to the upper surface of the second bracket 102, and the fourth bracket 104 is fixedly installed on the upper surface of the first bracket 101. The fourth bracket 104 is fixedly installed on one side of the fourth bracket 104. A motor 105 is installed, and its output end is rotatably connected to a first connecting block 106. A limiting block 107 is rotatably connected to one side of a third bracket 103. The limiting block 107 has a sliding groove 108, which engages with the first connecting block 106. A fifth bracket 111 is fixedly installed on the upper surface of the base plate 1. A bearing plate 110 is rotatably connected to the inner side of the fifth bracket 111. A second connecting block 109 passes through the fifth bracket 111 and connects to the bearing plate 110. A sliding groove 108 is engaged on one side, and a cylinder 116 is fixedly installed on one side of the bearing plate 110. The output end of the cylinder 116 is connected to a telescopic rod 115, and a connecting piece 114 is fixedly installed on the telescopic rod 115. A rack 113 is fixedly installed on one side of the connecting piece 114, and a rack 112 is fixedly installed on one side of the rack 113. The rack 112 is rotatably connected to the bearing plate 110, and the inner side of the rack 112 is rotatably connected to the pressure block 117, thereby ensuring that the output of the motor 105 drives the first connecting block 106 to rotate. The rotation of the first connecting block 106 drives the movement of the limiting block 107 via the slide groove 108. The movement of the slide groove 108 drives the rotation of the second connecting block 109. The second connecting block 109 drives the bearing plate 110 to flip, thereby achieving the flipping effect. The cylinder 116 output drives the telescopic rod 115, the connecting piece 114 and the rack 113 to extend and retract. The rack 113 drives the rack 112 to rotate. The rack 112 drives the pressure block 117 to rotate and press down, thereby ensuring the clamping effect and achieving the effect of clamping, flipping and removing waste materials, enhancing the practical value of the device.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A waste removal device for metal door and window processing, comprising a base plate (1); characterized in that: It also includes a flipping component, a base (2), a storage component, and a moving component; the bottom of the base plate (1) is provided with a base (2), and a moving component is provided on one side of the base plate (1). There are two sets of moving components. The upper surface of the base plate (1) is provided with a storage component, and the upper surface of the base plate (1) is provided with a flipping component. The flipping component includes a first bracket (101), a second bracket (102), a third bracket (103), a fourth bracket (104), a motor (105), a first connecting block (106), and a limiting block (107). The slide (108), the second connecting block (109), the bearing plate (110), the fifth bracket (111), the rack (112), the toothed rack (113), the connecting piece (114), the telescopic rod (115), the cylinder (116), and the pressure block (117) are provided on the upper surface of the base plate (1). The fifth bracket (111) is provided in two sets. The bearing plate (110) is rotatably connected to the inner side of the fifth bracket (111), and the second connecting block (109) is rotatably connected to one side of the fifth bracket (111).

2. The metal door and window processing waste removal device according to claim 1, characterized in that: The upper end face of the base plate (1) is threadedly connected to the first bracket (101). The inner side of the first bracket (101) is provided with a second bracket (102). The upper end face of the first bracket (101) is threadedly connected to the fourth bracket (104). The upper end face of the second bracket (102) is threadedly connected to the third bracket (103).

3. The metal door and window processing waste removal device according to claim 1, characterized in that: A motor (105) is provided on one side of the fourth bracket (104). The output end of the motor (105) is rotatably connected to the first connecting block (106). A limit block (107) is rotatably connected to one side of the third bracket (103). The limit block (107) has a sliding groove (108). The first connecting block (106) engages in the sliding groove (108), and the sliding groove (108) engages in the second connecting block (109).

4. The metal door and window processing waste removal device according to claim 1, characterized in that: A cylinder (116) is provided on one side of the bearing plate (110). There are two sets of cylinders (116). The output end of the cylinder (116) is connected to one side of the telescopic rod (115). There are two sets of telescopic rods (115). A connecting piece (114) is provided on one side of the telescopic rod (115). There are two sets of connecting pieces (114). A rack (113) is provided on one side of the connecting piece (114). There are two sets of racks (113). A rack (112) is provided on one side of the rack (113). The rack (112) is rotatably connected to the bearing plate (110). The inner side of the rack (112) is rotatably connected to the pressure block (117).

5. The metal door and window processing waste removal device according to claim 1, characterized in that: The storage assembly includes a box body (201), a first movable plate (202), a first hinge (203), a feed plate (204), a second hinge (205), a second movable plate (206), a baffle (207), and a locking block (208); the box body (201) is provided on the upper surface of the base plate (1), the feed plate (204) is provided on one side of the box body (201), the first hinge (203) is provided on one side of the box body (201), and there are two sets of the first hinge (203). The first movable plate (202) The first hinge (203) is connected to one side of the box body (201). A second hinge (205) is provided on one side of the box body (201). Two sets of the second hinge (205) are provided. A second movable plate (206) is connected to one side of the box body (201) through the second hinge (205). A locking block (208) is provided on one side of the second movable plate (206). Two sets of the locking block (208) are provided. A baffle (207) is rotatably connected to one side of the box body (201). Two sets of the baffle (207) are provided.

6. The metal door and window processing waste removal device according to claim 1, characterized in that: The moving components include a right-angle hinge (301), a first horizontal block (302), a second horizontal block (303), a caster wheel (304), a first protrusion (305), a bite block (306), a second protrusion (307), a pivot (308), a tension spring (309), and a third protrusion (310); a right-angle hinge (301) is threadedly connected to one side of the base plate (1), and two sets of the right-angle hinge (301) are provided. The bottom of the right-angle hinge (301) is threadedly connected to the first horizontal block (302) and the second horizontal block (303), and two sets of the first horizontal block (302) and the second horizontal block (303) are provided. Caster wheels (304) are provided at the bottom of the first horizontal block (302) and the second horizontal block (303), and multiple sets of caster wheels (304) are provided.

7. The metal door and window processing waste removal device according to claim 6, characterized in that: A first protrusion (305) is provided on one side of the first horizontal block (302), and two sets of the first protrusion (305) are provided. A biting block (306) is provided on one side of the first horizontal block (302), and two sets of the biting block (306) are provided. A rotating shaft (308) is connected through the biting block (306). A second protrusion (307) is provided on one side of the biting block (306), and two sets of the second protrusion (307) are provided. A tension spring (309) is connected to the outer side of the second protrusion (307) and the first protrusion (305), and two sets of the tension spring (309) are provided. A third protrusion (310) is provided on one side of the second horizontal block (303), and two sets of the third protrusion (310) are provided.

Images