Double hook punching device for tire anti-skid chain

Abstract

The present invention discloses a double-hook punching device for a tire anti-skid chain, comprising a frame and a closed-loop plate chain, wherein the plate chain has two plates arranged side by side in the frame, and the two plate chains are fixed with shelf plates, which are arranged equidistantly on the plate chain and perpendicular to the conveying direction of the plate chain, and double-hook positioning seats are fixed on both sides of the surface of the shelf plates, and the double-hook positioning seats are provided with positioning grooves, and a double-hook punching mechanism for punching double hooks is fixed on the frame. In the present invention, the double hooks to be punched can be continuously conveyed to the double-hook punching mechanism for punching by conveying the side chain through the plate chain, which not only has good production continuity, but also can greatly reduce labor intensity, improve production efficiency, and have high operational safety.

Description

Technical Field

[0001] The invention relates to the technical field of tire anti-skid chain assembly, in particular to a double-hook punching device for a tire anti-skid chain. Background Art

[0002] The automobile tire anti-skid chain is composed of two side chains and a plurality of cross chains arranged at intervals along the length direction of the side chains. The two ends of the cross chain are fixedly connected to the two side chains by double hooks to prevent slipping. The shape of the double hooks can be seen in the application number: 2007201061510, the patent name: A stamping forming machine for double hooks on an anti-skid chain. Figure 6 .

[0003] At present, the production process of automobile tire anti-skid chains is as follows: first, double hooks are hung in the chain links at both ends of the cross chain, and then the double hooks at both ends of the cross chain are respectively hooked on the corresponding chain links on the side chain, and the above operation is repeated. The cross chain is hung on the side chain to obtain the entire anti-skid chain. Finally, the anti-skid chain is placed under the press and passed through the press, and the double hooks at both ends of the same cross chain in the anti-skid chain are placed in the positioning seat plate under the pressure head of the press, and the claws of the two double hooks are punched at the same time by the pressure head of the press to close the claws, so that the cross chain and the side chain are fixedly connected together by the double hooks. After punching, the double hooks at both ends of the next cross chain are placed in the positioning seat plate under the pressure head of the press for punching, and the above operation is repeated to complete the punching of the double hooks on the entire anti-skid chain.

[0004] The existing double-hook punching method has the following defects: (1) During punching, the anti-skid chain is pulled forward continuously by hand (manual chain feeding) to make the rear cross chain move forward so that the double hooks at both ends of the rear cross chain can be placed in the positioning seat plate under the press head. Since the tire anti-skid chain is long and heavy, manual pulling of the anti-skid chain is labor-intensive; (2) The claws of the double hooks are punched by the press head, and the press is bulky and energy-intensive; (3) After punching, the double hooks in the positioning seat plate need to be removed before the double hooks to be punched can be put back in for punching, resulting in poor production continuity and low production efficiency; (4) Manually placing the double hooks in the positioning seat plate under the press head poses a safety hazard. Summary of the invention

[0005] The present invention aims to solve the above problems existing in the double-hook punching method of the prior art and provides a double-hook punching machine for tire anti-skid chains which has a compact structure, good production continuity, can reduce labor intensity, improve production efficiency and has high operational safety.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a double-hook punching device for a tire anti-skid chain, comprising a frame and a closed-loop plate chain, the plate chain having two plates arranged in parallel on the left and right sides in the frame, shelf plates fixed on the two plate chains, the shelf plates equidistantly arranged on the plate chains and perpendicular to the conveying direction of the plate chains, double-hook positioning seats fixed on both sides of the surface of the shelf plates, the double-hook positioning seats being provided with positioning grooves, and a double-hook punching mechanism for punching the double hooks is fixed on the frame. The present invention adopts a plate chain as a conveying mechanism, which can continuously convey the double hooks to be punched to the double hook punching mechanism for punching, which not only has good production continuity and stable operation, but also can greatly reduce labor intensity, improve production efficiency, and has high operation safety; the shelf is used to place the cross chain, and the positioning groove is used to place the double hooks (the hook claws in the double hooks are placed upwards) and position the double hooks at the same time, so that the double hook punching device can accurately punch the double hooks; the installation method of the plate chain is a conventional technical means in this field, that is: a driving sprocket and a driven sprocket are rotatably installed at both ends of the frame, and the plate chain is wound around the driving sprocket and the driven sprocket, and the driving sprocket is driven by a motor.

[0007] Preferably, the double-hook stamping mechanism includes a lower fixed plate and an upper fixed plate, the lower fixed plate is located between the upward chain of the plate chain and the downward chain of the plate chain and is fixed on the frame, a supporting column is fixed at a position on the lower fixed plate located on the outside of the upward chain of the plate chain, and pads for supporting the shelf plate during stamping are fixed at positions on the inner sides of the supporting columns of the lower fixed plate, the pads are located below the upward chain of the plate chain, and an avoidance gap is provided on the outer side of the pads for the plate chain to pass through, the upper fixed plate is fixed to the top of the supporting column, a pair of hydraulic cylinders are fixed on the upper fixed plate, and the cylinder rods of the hydraulic cylinders pass downward through the upper fixed plate and are fixed with a stamping head. The double-hook punching mechanism in the present invention is used for punching double hooks, has a small size and stable operation; when the double hooks to be punched are conveyed to the bottom of the punching head, the punching head descends to punch the double hooks, so that the hook claws are bent and closed, and the two ends of the cross chain are fixedly connected to the side chain through the double hooks after punching. After punching, the punching head is lifted, and the plate chain continues to move forward. Repeating the above steps can realize continuous automatic punching of the double hooks; the shelf plate cannot withstand the pressure of the punching head and will be deformed or even damaged. Therefore, a pad is added in the invention, which plays a role of limiting and supporting the shelf plate, and can ensure the integrity of the shelf plate structure during punching and extend its service life; the hydraulic cylinder in the present invention is used to provide power for the punching head to press down, and can be replaced by other power mechanisms.

[0008] Preferably, the shelf is provided with a placement slot for placing the cross chain, and the double hook positioning seats are fixed at both ends of the placement slot. The placement slot is used to place the cross chain, so that the cross chain is not easy to fall off the shelf during forward transportation, thereby preventing the double hook from sliding out of the positioning slot.

[0009] Preferably, a lower pressing plate is fixed to the end of the cylinder rod of the hydraulic oil cylinder, a connecting plate is fixed to the bottom surface of the lower pressing plate, a mounting groove is provided on the bottom surface of the connecting plate, the punch head is fixed in the mounting groove, a limiting groove matching the shape of the hook claws on the double hooks is provided on the punch head, and guide rods are fixed to the bottom surface of the upper fixed plate at both sides of the cylinder rod of the hydraulic oil cylinder, the guide rods pass through the lower pressing plate, and a sliding fit is formed between the lower pressing plate and the guide rods. Through the cooperation between the lower pressing plate and the guide rods, it can be ensured that the lower pressing plate can always be lifted up and down in a straight line, and the operation stability and the accuracy of the stamping can be ensured.

[0010] Preferably, a group of infrared radiation detectors are provided on the lower fixed plate at the position before the plate chain enters the avoidance gap, and the infrared radiation detectors are respectively located on the outer side of the upward chain of the plate chain. The infrared radiation detectors play a protective role. As long as any part of the operator's body blocks the light of the infrared radiation detectors, the present invention will stop running and enter a safe state, thereby avoiding harm to the operator.

[0011] Preferably, the double-hook punching machine of the tire anti-skid chain also includes a pair of side chain conveying mechanisms symmetrically arranged on the frame, the side chain conveying mechanism is located in front of the double-hook punching mechanism, and the space between the side chain conveying mechanism and the double-hook punching mechanism forms a double-hook hooking operation area, the side chain conveying mechanism includes a mounting base plate and a rotatable tensioning wheel, the mounting base plate is fixed to the frame, a motor and a rotatable horizontal guide wheel are provided on the mounting base plate, the horizontal guide wheel is located on the front side of the motor, and a rotatable convex tooth sprocket is provided above the position on the mounting base plate located on the inner side of the motor shaft of the motor, the motor shaft end of the motor is fixedly connected to the convex tooth sprocket, the tensioning wheel is on the same side as the convex tooth sprocket and is rotatably connected to the mounting base plate, the mounting height of the horizontal guide wheel is greater than the mounting height of the convex tooth sprocket, and the mounting height of the tensioning wheel is lower than the mounting height of the convex tooth sprocket.

[0012] Preferably, a side chain guide mechanism is provided on the outer side of the mounting base plate, and the side chain guide mechanism includes two spaced connecting plates, and an upper guide block and a lower guide block are fixed to the outer end of the connecting plate, and an upper guide hole in the shape of a "cross" is provided on the upper guide block, and a lower guide hole in the shape of a "cross" is provided on the lower guide block, and the upper guide hole is connected to the lower guide hole. The side chain guide mechanism is located in front of the inlet direction of the horizontal guide wheel, that is, the side chain passes through the side chain guide mechanism and then bypasses the horizontal guide wheel; the side chain is a cross chain (composed of horizontal chain links and vertical chain links), and when the vertical links in the side chain and the horizontal chain links in the side chain are not connected end to end (not straightened), it is very easy to cause slipping from the horizontal guide wheel when entering the horizontal guide wheel. Therefore, a side chain guide mechanism is provided in the invention, and the side chain is guided by the side chain guide mechanism before entering the horizontal guide wheel, so that the vertical links in the side chain and the horizontal links in the side chain are aligned with each other. The flat chain link can be straightened end to end so that it can smoothly enter the horizontal guide wheel; when the side chain passes through the upper guide hole and the lower guide hole, if the vertical link in the side chain is not connected end to end with the horizontal chain link in the side chain (not straightened), it cannot pass through the lower guide hole, and will be straightened (connected end to end) under the blocking effect of the lower guide block, and the upper guide hole will play a role of guiding again; the side chain coming out of the upper guide hole enters the horizontal guide wheel in a vertical state; the inner wall of the lower guide hole can be provided with an inner guide slope to facilitate the side chain to quickly enter the lower guide hole.

[0013] Preferably, the convex tooth sprocket is in the form of a regular polygon, and an annular groove for accommodating the vertical chain ring of the side chain is provided on the outer contour surface of the convex tooth sprocket. Relative limiting convex teeth are provided at each vertex position on both sides of the annular groove of the convex tooth sprocket. The distance between the relative limiting convex teeth is less than the width of the horizontal chain ring of the side chain, and the distance between adjacent limiting convex teeth on the same side is greater than the length of the horizontal chain ring of the side chain. The space enclosed by the limiting convex teeth and the outer contour surface of the convex tooth sprocket forms a chain groove for accommodating the horizontal chain ring of the side chain. The convex tooth sprocket is in the form of a polygon, so that the outer contour surface of the convex tooth sprocket is composed of a plurality of inclined surfaces, so that the horizontal chain ring of the side chain can be fully fitted and placed on the inclined surface; the limiting convex teeth play a role in limiting the horizontal chain ring of the side chain, and can block the horizontal chain ring of the side chain to prevent it from sliding down due to gravity and causing the side chain to slip off the convex tooth sprocket, while ensuring that the convex tooth sprocket can convey the side chain forward.

[0014] Preferably, the frame is symmetrically provided with double hook limit rods, which are located in front of the double hook punching mechanism, and are located above the positioning grooves with a proper gap between the double hook positioning seats. The double hook limit rods play the role of guiding and limiting, and can directly penetrate into the double hooks during the double hook transportation process to play a blocking role, so as to prevent the double hooks from withdrawing from the positioning grooves during transportation and hooking the side chains.

[0015] Preferably, the double-hook punching machine for the tire anti-skid chain also includes a pair of chain-out mechanisms and active chain guide rollers symmetrically arranged on the frame, the active chain guide roller is fixed to the rear end of the frame and is transmission-connected to a transmission device fixed to the frame, the chain-out mechanism is located in front of the active chain guide roller, the chain-out mechanism includes a base plate, an active chain guide roller, a fixed guide rod cylinder, a movable guide rod cylinder and a pen-shaped cylinder, the base plate is fixed to the frame, a guide rail is fixed to the base plate, a sliding seat is installed on the guide rail, the sliding seat and the guide rail are slidably matched, and the movable guide rod cylinder The cylinder is fixed on the sliding seat, and a front pressure plate is fixed on the end of the piston rod of the moving guide rod cylinder, and the front pressure plate is located above the upward chain of the plate chain. The pen-shaped cylinder is fixed on the base plate, and the piston rod end of the pen-shaped cylinder is fixedly connected to the sliding seat. The fixed guide rod cylinder is fixed on the base plate, and the fixed guide rod cylinder is located behind the moving guide rod cylinder. A rear pressure plate is fixed on the end of the piston rod of the fixed guide rod cylinder, and the rear pressure plate is located above the upward chain of the plate chain. The active chain guide roller is fixed on the rear end of the frame and is connected to the transmission device fixed on the frame.The chain-out mechanism in the present invention is used to compress the double hooks, so as to prevent the anti-skid chain falling from the active chain guide roller under the action of gravity from pulling the side chain in front and pulling the double hooks to be punched out of the positioning groove, and the anti-skid chain from accumulating in the gap between the frame and the active chain guide roller and failing to fall smoothly; the movable guide rod cylinder can move back and forth along the guide rail under the action of the pen-shaped cylinder, and the moving speed is consistent with the moving speed of the plate chain; the operation process of the chain-out mechanism is as follows: before the double hooks are punched, the piston rod of the fixed guide rod cylinder extends , the rear pressure plate presses the side chains on both sides of the anti-skid chain onto the frame. At this time, the anti-skid chain is straightened and will not relax and fall into the gap between the frame and the active chain guide roller for accumulation; the punching head punches the double hooks on the shelf plate below the punching head. After the punching head punches the double hooks, the piston rod of the moving guide rod cylinder extends to make the front pressure plate press the double hooks on the previous shelf plate (referring to the shelf plate before the shelf plate below the punching head). When the plate chain moves forward, the piston of the fixed guide rod cylinder The rod contracts, the rear pressure plate leaves the side chain, and the piston rod of the pen-shaped cylinder contracts synchronously, driving the movable guide rod cylinder to move synchronously along the guide rail, and the anti-skid chain is transported forward and falls a certain distance along the active chain guide roller; after the anti-skid chain falls a certain distance, the piston rod of the fixed guide rod cylinder extends, so that the rear pressure plate presses the side chains on both sides of the anti-skid chain against the frame, and the piston rod of the pen-shaped cylinder extends, so that the movable guide rod cylinder moves (closes) to the double-hook stamping mechanism along the guide rail until it is reset, and the stamping head is aligned with the stamping The double hooks on the shelf plate below the punching head are punched. After the punching head punches the double hooks, the piston rod of the mobile guide rod cylinder is extended to make the front pressure plate press the double hooks on the previous shelf plate. When the plate chain moves forward, the piston rod of the fixed guide rod cylinder contracts, and the rear pressure plate leaves the side chain. At the same time, the piston rod of the pen-shaped cylinder contracts synchronously, driving the mobile guide rod cylinder to move synchronously along the guide rail, and the anti-skid chain is transported forward and falls a certain distance along the active chain guide roller. Repeating the above steps continuously can continuously feed the chain.

[0016] Therefore, the present invention has the following beneficial effects:

[0017] (1) The plate chain is used as the conveying mechanism, which can continuously convey the double hooks to be punched to the double hook punching mechanism for punching. This not only has good production continuity and stable operation, but also can greatly reduce labor intensity, improve production efficiency, and have high operational safety;

[0018] (2) It integrates double-hook punching mechanism, side chain conveying mechanism and chain delivery mechanism in one, with a compact structure, and can realize automatic punching and chain delivery, greatly improving production efficiency and production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axial view of the present invention.

[0020] Figure 2It is a connection diagram of a shelf plate and a double-hook positioning seat.

[0021] Figure 3 It is a structural schematic diagram of the double-hook punching mechanism in the present invention.

[0022] Figure 4 It is a schematic diagram of the internal structure of a double-hook punching mechanism.

[0023] Figure 5 This is a schematic diagram of the connection between the connecting plate and the punch head.

[0024] Figure 6 It is a three-dimensional image of a cushion block.

[0025] Figure 7 It is a structural schematic diagram of a side chain conveying mechanism.

[0026] Figure 8 It is an axial view of a convex tooth sprocket.

[0027] Fig. 9 It is a schematic diagram of the coordination between the convex tooth sprocket and the side chain.

[0028] Fig.10 It is an axial view of the side chain guide mechanism.

[0029] Fig.11 yes Figure 5 A top view of .

[0030] Fig.12 yes Figure 6 Cross-sectional view along the AA direction.

[0031] Fig.13 This is an installation diagram of a double-hook limit rod.

[0032] Fig.14 yes Fig.13 Enlarged view of point B in the middle.

[0033] Fig.15 It is a structural diagram of a chain-out mechanism.

[0034] In the figure: frame 1, plate chain 2, shelf plate 3, double hook positioning seat 4, positioning groove 5, lower fixing plate 6, upper fixing plate 7, support column 8, cushion block 9, avoidance gap 10, hydraulic cylinder 11, punch head 12, placement groove 13, lower pressing plate 14, connecting plate 15, installation groove 16, limit groove 17, guide rod 18, infrared beam detector 19, double hook hooking operation area 20, installation base plate 21, tensioning wheel 22, motor 23, horizontal guide wheel 24, convex tooth sprocket 25, connecting plate 26, upper guide block 27, lower guide block 28, upper guide hole 29, lower guide hole 30, annular groove 31, limiting convex tooth 32, chain groove 33, double hook limiting rod 34, active chain guide roller 35, base plate 36, fixed guide rod cylinder 37, movable guide rod cylinder 38, pen-shaped cylinder 39, guide rail 40, sliding seat 41, front pressure plate 42, rear pressure plate 43, side chain 44, cross chain 45, double hook 46.

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] like Figure 1 The double hook punching device of a tire anti-skid chain shown in the figure comprises a frame 1, a closed-loop plate chain 2, a side chain conveying mechanism, a driving chain guide roller 35 and a chain discharging mechanism, the plate chain has two and is arranged in parallel in the frame, the front and rear ends of the frame are respectively rotatably mounted with a driven sprocket and a driving sprocket, the plate chain is wound around the driving sprocket and the driven sprocket, the driving sprocket is driven by a motor, and a shelf plate 3 (such as Figure 2 As shown in the figure, the shelf plates are equidistantly arranged on the plate chain and perpendicular to the conveying direction of the plate chain. The shelf plates are provided with placement grooves 13 for placing the cross chain. Double hook positioning seats 4 are fixed at both ends of the placement grooves. The double hook positioning seats are provided with positioning grooves 5. A double hook punching mechanism for punching the double hooks is fixed on the frame; the double hook punching mechanism includes a lower fixed plate 6 and an upper fixed plate 7 (as shown in the figure). Figure 3 , Figure 4 As shown in the figure, the lower fixed plate is located between the upward chain of the plate chain and the downward chain of the plate chain and is fixed on the frame. A support column 8 is fixed on the lower fixed plate at a position outside the upward chain of the plate chain. The support column is arranged along the four corners of the lower fixed plate. The lower fixed plate is located on the inner side of the support column. The spacer 9 (as shown in the figure) used to support the shelf plate during stamping is fixed to the position Figure 5As shown), the pad is located below the upward chain of the plate chain, and an avoidance gap 10 is opened on the outer side of the pad for the plate chain to pass through. A group of infrared radiation detectors 19 are provided on the lower fixed plate at the position before the plate chain enters the avoidance gap. The infrared radiation detectors are respectively located on the outer side of the upward chain of the plate chain. The upper fixed plate is fixed to the top of the supporting column, and a pair of hydraulic cylinders 11 are fixed on the upper fixed plate. The cylinder rods of the hydraulic cylinders pass downward through the upper fixed plate and are fixed with a lower pressing plate 14. A connecting plate 15 is fixed to the bottom surface of the lower pressing plate, and an installation groove 16 is opened on the bottom surface of the connecting plate. A punch head 12 is fixed in the installation groove (as shown in FIG. Figure 6 As shown in the figure, the punching head is provided with a limit groove 17 which matches the shape of the hook claw on the double hook, and the bottom surface of the upper fixed plate is located at the positions on both sides of the cylinder rod of the hydraulic cylinder and is fixed with guide rods 18, which pass through the lower pressing plate, and a sliding fit is formed between the lower pressing plate and the guide rods; the side chain conveying mechanism is located in front of the double hook punching mechanism and is symmetrically arranged on the frame, and the space between the side chain conveying mechanism and the double hook punching mechanism forms a double hook hooking operation area 20, and the side chain conveying mechanism includes a mounting bottom plate 21 and a rotatable tensioning wheel 22 (as shown in the figure). Figure 7 As shown in the figure, the mounting base is fixed on the frame, a motor 23 and a rotatable horizontal guide wheel 24 are mounted on the mounting base, the horizontal guide wheel is located at the front side of the motor, and a rotatable convex tooth sprocket 25 (as shown in the figure) is arranged above the position of the motor shaft of the motor on the mounting base. Figure 8 , Fig. 9 As shown), the convex tooth sprocket is a regular polygon, and an annular groove 31 for accommodating the vertical chain ring of the side chain is provided on the outer contour surface of the convex tooth sprocket, and relative limiting convex teeth 32 are provided at each vertex position on both sides of the annular groove of the convex tooth sprocket, and the distance between the relative limiting convex teeth is less than the width of the horizontal chain ring of the side chain, and the distance between adjacent limiting convex teeth on the same side is greater than the length of the horizontal chain ring of the side chain, and the space enclosed by the limiting convex teeth and the outer contour surface of the convex tooth sprocket forms a chain groove 33 for accommodating the horizontal chain ring of the side chain, the motor shaft end of the motor is fixedly connected to the convex tooth sprocket, and the tensioning wheel is on the same side as the convex tooth sprocket and is rotatably connected to the mounting base plate, the mounting height of the horizontal guide wheel is greater than the mounting height of the convex tooth sprocket, and the mounting height of the tensioning wheel is lower than the mounting height of the convex tooth sprocket; a side chain guide mechanism (as shown in FIG. Fig.10 , Fig.11 , Fig.12 As shown in the figure, the side chain guide mechanism includes two spaced connection plates 26, an upper guide block 27 and a lower guide block 28 are fixed to the outer ends of the connection plates, an upper guide hole 29 in the shape of a "cross" is provided on the upper guide block, and a lower guide hole 30 in the shape of a "cross" is provided on the lower guide block. The upper guide hole is connected to the lower guide hole, and the inner wall surface of the lower guide hole is provided with an inner guide surface; double hook limit rods 34 (as shown in the figure) are symmetrically provided on the frame. Fig.13As shown in the figure, the double hook limit rod is located in front of the double hook punching mechanism, the double hook limit rod is located above the positioning groove and leaves an appropriate gap between the double hook positioning seat; the active chain guide roller 35 is fixed to the rear end of the frame and is connected to the transmission device (motor) fixed on the frame, the chain out mechanism is located in front of the active chain guide roller, and the chain out mechanism includes a base plate 36, a fixed guide rod cylinder 37, a movable guide rod cylinder 38 and a pen-shaped cylinder 39 (as shown in the figure). Fig.15 As shown), the base plate is fixed on the frame, a guide rail 40 is fixed on the base plate, a sliding seat 41 is installed on the guide rail, the sliding seat and the guide rail are slidably matched, the moving guide rod cylinder is fixed on the sliding seat, the piston rod end of the moving guide rod cylinder is fixed with a front pressure plate 42, the front pressure plate is located above the upward chain of the plate chain, the pen-shaped cylinder is fixed on the base plate, the piston rod end of the pen-shaped cylinder is fixedly connected to the sliding seat, the fixed guide rod cylinder is fixed on the base plate, the fixed guide rod cylinder is located behind the moving guide rod cylinder, the piston rod end of the fixed guide rod cylinder is fixed with a rear pressure plate 43, the rear pressure plate is located above the upward chain of the plate chain, the active chain guide roller is fixed at the rear end of the frame and is transmission-connected with the transmission device fixed on the frame.

[0037] The operation process of the present invention is as follows: the motor is started to make the driving sprocket drive the plate chain to start moving, and the cross chain 45 with double hooks 46 hooked at both ends is placed on the shelf plate on the plate chain in front of the side chain conveying mechanism in turn, and the double hooks at both ends of the cross chain are placed in the positioning grooves on the double hook positioning seat, and the cross chain is conveyed to the double hook hooking operation area through the plate chain. During the conveying process, the limit rod is inserted into the double hook to guide and limit the double hook (such as Fig.14As shown); the side chain conveying mechanism relatively arranged on the frame conveys the side chain 44 to the double hook hooking operation area at the same time, and the operator hooks the double hook on the side chain in the double hook hooking operation area to connect the side chain with the cross chain to form an anti-skid chain; when the double hook to be punched is conveyed to the bottom of the punching head, the piston rod of the fixed guide rod cylinder extends, so that the rear pressure plate presses the side chains on both sides of the anti-skid chain against the frame, and the hydraulic rod of the hydraulic cylinder descends to drive the punching head to punch the double hook on the shelf plate below the punching head, so that the hook claws bend and close, and after punching, the two ends of the cross chain are fixedly connected to the side chain through the double hooks. After the punching head punches the double hooks, the hydraulic rod of the hydraulic cylinder rises to lift the punching head away from the double hook, and at the same time moves the piston of the guide rod cylinder The rod is extended to make the front pressure plate press the double hooks on the previous shelf plate (referring to the shelf plate before the shelf plate under the punching head). When the plate chain moves forward, the piston rod of the fixed guide rod cylinder contracts, and the rear pressure plate leaves the side chain. At the same time, the piston rod of the pen-shaped cylinder contracts synchronously, driving the moving guide rod cylinder to move synchronously along the guide rail, and the anti-skid chain is transported forward and falls a certain distance along the active chain guide roller to leave the punching machine; after the anti-skid chain falls a certain distance, the piston rod of the pen-shaped cylinder is extended to make the moving guide rod cylinder move (approach) toward the double-hook punching mechanism along the guide rail until it is reset. At this time, the rear shelf plate has been transported to the bottom of the punching head with the plate chain to prepare for punching. Repeating the previous steps and processes can achieve continuous punching of the double hooks.

[0038] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A double hook punching device for a tire anti-skid chain, characterized in that: It comprises a frame (1) and a closed-loop plate chain (2), wherein the plate chain has two plates arranged side by side in the frame, and the two plates are fixed with shelf plates (3), the shelf plates are arranged equidistantly on the plate chain and perpendicular to the conveying direction of the plate chain, and double-hook positioning seats (4) are fixed on both sides of the surface of the shelf plates, and the double-hook positioning seats are provided with positioning grooves (5), and a double-hook punching mechanism for punching double hooks is fixed on the frame; The double-hook punching machine for the tire anti-skid chain also includes a pair of side chain conveying mechanisms symmetrically arranged on the frame, the side chain conveying mechanisms are located in front of the double-hook punching mechanisms, and the space between the side chain conveying mechanisms and the double-hook punching mechanisms forms a double-hook hooking operation area (20), the side chain conveying mechanisms include a mounting base plate (21) and a rotatable tensioning wheel (22), the mounting base plate is fixed to the frame, a motor (23) and a rotatable horizontal guide wheel (24) are provided on the mounting base plate, the horizontal guide wheel is located on the front side of the motor, a rotatable convex tooth sprocket (25) is provided above the position on the mounting base plate located inside the motor shaft of the motor, the motor shaft end of the motor is fixedly connected to the convex tooth sprocket, the tensioning wheel is rotatably connected to the mounting base plate on the same side as the convex tooth sprocket, the mounting height of the horizontal guide wheel is greater than the mounting height of the convex tooth sprocket, and the mounting height of the tensioning wheel is lower than the mounting height of the convex tooth sprocket; The double-hook punching machine for tire anti-skid chains also includes a pair of chain-out mechanisms and active chain guide rollers (35) symmetrically arranged on a frame, wherein the active chain guide rollers are fixed to the rear end of the frame and are transmission-connected to a transmission device fixed to the frame, and the chain-out mechanism is located in front of the active chain guide rollers. The chain-out mechanism includes a base plate (36), a fixed guide rod cylinder (37), a movable guide rod cylinder (38) and a pen-shaped cylinder (39), wherein the base plate is fixed to the frame, a guide rail (40) is fixed to the base plate, and a sliding seat (41) is installed on the guide rail. The sliding seat and the guide rail are slidably matched, the movable guide rod cylinder is fixed on the sliding seat, the end of the piston rod of the movable guide rod cylinder is fixed with a front pressure plate (42), and the front pressure plate is located above the upward chain of the plate chain, the pen-shaped cylinder is fixed on the base plate, the end of the piston rod of the pen-shaped cylinder is fixedly connected to the sliding seat, the fixed guide rod cylinder is fixed on the base plate, the fixed guide rod cylinder is located behind the movable guide rod cylinder, the end of the piston rod of the fixed guide rod cylinder is fixed with a rear pressure plate (43), and the rear pressure plate is located above the upward chain of the plate chain.

2. A double hook punching device for a tire anti-skid chain according to claim 1, characterized in that: The double-hook punching mechanism comprises a lower fixed plate (6) and an upper fixed plate (7), wherein the lower fixed plate is located between the upward chain of the plate chain and the downward chain of the plate chain and is fixed on the frame, a support column (8) is fixed on the lower fixed plate at a position located outside the upward chain of the plate chain, and pads (9) for supporting the shelf plate during punching are fixed on the positions of the lower fixed plate located inside the support columns, wherein the pads are located below the upward chain of the plate chain, and an avoidance notch (10) is provided on the outer side of the pads for the plate chain to pass through, and the upper fixed plate is fixed on the top of the support column, and a pair of hydraulic cylinders (11) are fixed on the upper fixed plate, wherein the cylinder rods of the hydraulic cylinders pass downward through the upper fixed plate and are fixed with a punching head (12).

3. A double hook punching device for a tire anti-skid chain according to claim 2, characterized in that: The shelf plate is provided with a placement groove (13) for placing the cross chain, and the double-hook positioning seats are fixed at both ends of the placement groove.

4. A double hook punching device for a tire anti-skid chain according to claim 2, characterized in that: A lower pressure plate (14) is fixed to the end of the cylinder rod of the hydraulic oil cylinder, a connecting plate (15) is fixed to the bottom surface of the lower pressure plate, a mounting groove (16) is provided on the bottom surface of the connecting plate, the punch head is fixed in the mounting groove, the punch head is provided with a limiting groove (17) adapted to the shape of the hook claws on the double hooks, and guide rods (18) are fixed to the bottom surface of the upper fixed plate at positions on both sides of the cylinder rod of the hydraulic oil cylinder, the guide rods pass through the lower pressure plate, and a sliding fit is formed between the lower pressure plate and the guide rods.

5. A double hook punching device for a tire anti-skid chain according to claim 2, characterized in that: A group of infrared radiation detectors (19) are provided on the lower fixed plate at positions before the plate chain enters the avoidance gap, and the infrared radiation detectors are respectively located on the outer sides of the upward chain of the plate chain.

6. A double hook punching device for a tire anti-skid chain according to claim 1, characterized in that: A side chain guide mechanism is provided on the outer side of the mounting base plate, the side chain guide mechanism comprising two spaced connection plates (26), an upper guide block (27) and a lower guide block (28) being fixed to the outer ends of the connection plates, the upper guide block being provided with a cross-shaped upper guide hole (29), the lower guide block being provided with a cross-shaped lower guide hole (30), the upper guide hole being in communication with the lower guide hole.

7. A double hook punching device for a tire anti-skid chain according to claim 1, characterized in that: The convex tooth sprocket is in the form of a regular polygon, and an annular groove (31) for accommodating a vertical chain ring of a side chain is provided on the outer contour surface of the convex tooth sprocket. The convex tooth sprocket is provided with relative limiting convex teeth (32) at each vertex position on both sides of the annular groove. The distance between the relative limiting convex teeth is less than the width of a horizontal chain ring of the side chain, and the distance between adjacent limiting convex teeth on the same side is greater than the length of the horizontal chain ring of the side chain. The space enclosed by the limiting convex teeth and the outer contour surface of the convex tooth sprocket forms a chain clamping groove (33) for accommodating a horizontal chain ring of the side chain.

8. The double-hook punching device for a tire anti-skid chain according to claim 1, characterized in that: The frame is symmetrically provided with double-hook limiting rods (34), the double-hook limiting rods are located in front of the double-hook punching mechanism, and the double-hook limiting rods are located above the positioning grooves and have an appropriate gap with the double-hook positioning seat.

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