Punching equipment for vehicle door hinge machining

Abstract

The invention relates to the technical field of vehicle door hinge machining, in particular to punching equipment for vehicle door hinge machining, which comprises a workbench, a punching assembly, a feeding assembly, a clamping assembly and a collecting assembly, according to the punching equipment for vehicle door hinge machining, a top plate is stably erected on the workbench through a supporting column, and a lifter drives a lifting plate to vertically move; when the lifting plate descends, the connecting rod drives the rack to move downwards, the gear and the screw rod are driven to rotate, the feeding plate is promoted to advance along the sliding groove to push materials, and the problem that safety accidents are likely to occur in traditional manual feeding is solved; the centering block is matched with the side plates through first elastic pieces (combination of springs and telescopic rods, buffering, energy absorbing and guiding), first inclined faces on the two sides cooperate with the lifting plate pressing blocks, at the moment, racks and gears are not engaged any more, the guiding blocks drive materials to be fixed into the positioning grooves, and the stability of the material stamping process is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle door hinge processing, in particular to a punching device for vehicle door hinge processing. Background Art

[0002] Door hinges are key components that connect car doors to the body of the car. They are responsible for ensuring smooth opening and closing of the door, stable support, and precise positioning, which has a significant impact on the car's user experience and safety. A punching device is required for the processing of door hinges. The traditional punching device uses manual loading and unloading. The above process still has the following problems: 1. Manual loading is relatively dangerous and prone to safety accidents; 2. Manual loading positioning is inaccurate, which can easily lead to inaccurate punching position of the material during stamping; 3. Manual unloading is still prone to safety accidents, and manual loading and unloading is time-consuming and labor-intensive.

[0003] If mechanical die groove stamping is used, it will still be inconvenient to load and unload materials, and the stamping die groove is not convenient to clean. If impurities remain, it will easily affect the subsequent material processing. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a punching device for processing a vehicle door hinge.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching device for door hinge processing, comprising a workbench, a stamping assembly, a feeding assembly, a clamping assembly and a collecting assembly, wherein legs are arranged at the four corners below the workbench, the stamping assembly comprises a top plate, a pillar, a lifting plate, a lifter, a stamping seat and a stamping rod, pillars fixed on the workbench are arranged at the four corners below the top plate, the lifter passes through the center of the top plate and is connected to the center of the top wall of the lifting plate, the stamping seat is arranged at the center below the lifting plate, the stamping rod is also arranged below the stamping seat, and a stamping hole adapted to the stamping rod is also arranged on the workbench; The workbench is also provided with a feeding assembly, and the feeding assembly is arranged at the front side of the clamping assembly; The clamping assembly includes side plates, a first elastic member, and a fixture. The side plates are symmetrically arranged on the left and right sides of the workbench. The first elastic member is arranged at one end of the side plate close to the center of the workbench. The fixture includes a centering block and a guiding block in a U shape. The opening of the centering block is arranged on the side away from the center of the workbench. The two free ends of the centering block are slidably connected to the front and rear side walls of the side plate. A positioning groove is arranged at the center of one end of the centering block close to the punching seat. The guiding block is also arranged on the centering block. The guiding block is arranged on the periphery of the positioning groove and at one end close to the feeding assembly. First inclined surfaces are arranged at the two free ends of the centering block. Pressing blocks adapted to the first inclined surfaces are also arranged at the four corners below the lifting plate. A notch adapted to the pressing block is also arranged on the workbench; A collecting assembly is further arranged at one end of the workbench away from the feeding assembly.

[0006] To facilitate stable feeding during punching, the present invention is improved in that the feeding assembly includes a connecting rod, a rack, a gear, a screw rod, and a feeding member. The connecting rods are symmetrically arranged on both sides of one end of the lifting plate close to the feeding assembly. The rack is arranged below the connecting rod. A through hole adapted to the rack is arranged on the workbench. Sliding grooves are also symmetrically arranged on the left and right sides of the workbench. The screw rod is rotatably arranged in the sliding groove. The screw rod penetrates through the through hole and is connected to the center of the gear. The rack meshes with the gear. The feeding assembly includes a slider and a feeding plate. Sliders extending into the sliding grooves are symmetrically arranged on both sides below the feeding plate. A threaded hole adapted to the screw rod is arranged on the slider. The connecting rod protrudes below the pressing block. The feeding plate is in a T shape. A groove adapted to the material is also arranged at one end of the feeding plate close to the clamping assembly.

[0007] To facilitate clamping and fixing of the material by the clamping assembly after feeding is completed, the present invention is improved in that a second inclined surface is arranged at one end of the guiding block close to the positioning groove. A feeding gap adapted to the feeding plate is also arranged between the guiding block and the workbench below. The thickness of the feeding plate is lower than the thickness of the material.

[0008] To facilitate stacking and feeding of the materials and enable the materials to be fed in sequence, the present invention is improved in that a blanking frame is further arranged at one end of the top plate close to the feeding assembly. The blanking frame is provided with a blanking hole penetrating up and down. The bottom wall of one end of the blanking frame away from the top plate is flush with the top wall of the feeding plate. An opening for material output is arranged at the bottom wall of one end of the blanking frame close to the top plate. When the feeding plate advances the material between the two guiding blocks and then stops, at this time the feeding plate abuts against the opening of the blanking frame. When the feeding plate is at one end away from the clamping assembly, at this time the feeding plate exposes the blanking hole and the opening.

[0009] Preferably, the first elastic member comprises a spring and a telescopic rod, the spring is sleeved on the telescopic rod, and both ends of the spring and the telescopic rod are respectively connected to the side plate and the centering block.

[0010] Preferably, the centering block is further provided with first guide rods penetrating the side plates, and the first guide rods are provided in two groups symmetrically arranged at both ends of the first elastic member.

[0011] Preferably, the lifting plate is further provided with second guide rods penetrating the top plate, and the second guide rods are arranged in two groups symmetrically.

[0012] In order to facilitate the re-loading, the material to be processed pushes the processed material to be unloaded, the present invention has an improvement in that the centering block is further provided with a unloading block at one end close to the punching seat, the unloading block is arranged at the end away from the guide block, the edge of the material is provided with a chamfer, and the end of the unloading block away from the guide block is also provided with a third inclined surface adapted to the chamfer of the edge of the material.

[0013] In order to facilitate the carrying of finished products and waste, the present invention has improvements in that the collection component includes a guide frame, a waste collection box, a finished product collection box, reinforcement ribs, a movable component and a connecting piece; the guide frames are arranged on both sides below the end of the workbench away from the feeding component, the movable component is arranged at the four corners below the finished product collection box, a waste collection box located between two groups of the guide frames is arranged near one end of the finished product collection box near the workbench, the upper opening of the waste collection box is adapted to the stamping hole, and reinforcement ribs connected to the finished product collection box are also arranged below the waste collection box; the movable component includes a universal wheel and a brake, the universal wheels are arranged at the four corners below the finished product collection box, the brakes are arranged on the circumference of the universal wheels, connecting pieces connected to the guide frames are also arranged on the left and right sides of the waste collection box, and a handrail is also arranged at the end of the finished product collection box away from the waste collection box.

[0014] Preferably, the connecting member includes a second elastic member and a card block, and the waste collection box is symmetrically provided with movable grooves on the left and right sides of one end close to the finished product collection box, and the two ends of the second elastic member are respectively connected to the movable groove and the card block, and the two groups of guide frames are also provided with card holes adapted to the card blocks.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a punching device for door hinge processing, which has the following beneficial effects: The punching equipment for door hinge processing has a top plate that stands firmly on the workbench through pillars. The lifter drives the lifting plate to move vertically, and cooperates with the high-precision punching seat and punching rod to work on the corresponding punching holes on the workbench. When the lifting plate descends, the connecting rod drives the rack downward, driving the gear and the screw to rotate, prompting the feed plate to move forward along the slide to push the material, solving the problem of safety accidents that are prone to occur in traditional manual feeding. The centering block cooperates with the first elastic member (a combination of a spring and a telescopic rod, which acts as a buffer, absorbs energy and guides) and the side plate, and the first inclined surfaces on both sides cooperate with the lifting plate pressing block. At this time, the rack and the gear are no longer engaged, and the guide block drives the material to the positioning groove for fixing, thereby ensuring the stability of the material stamping process; The lifting plate continues to feed, and after the punching rod completes the punching of the material, the lifting plate is reset, at which time the clamping assembly is reset, and then the rack and gear are meshed, and the screw and slider cooperate to drive the feed plate to reset and wait for the next feeding; Repeat the above stamping process, the material to be processed pushes the processed material out of the processing area for unloading, and the waste materials and finished products are transported by the collecting components, which is efficient and safe. The workbench surface is flat and easy to clean, ensuring the stability of the overall processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view schematic diagram of the structure of the present invention in a state of being ready for loading; Figure 2 It is a schematic diagram of the main view of the structure of the present invention in a state of being ready for loading; Figure 3 It is a bottom view schematic diagram of the structure of the present invention in a state of being loaded; Figure 4 This is a schematic diagram of the structural material of the present invention being centered and clamped for stamping; Figure 5 It is a schematic side view of the punching of the structural material of the present invention; Figure 6 It is a schematic diagram of the main view of the stamping of the structural material of the present invention; Figure 7 This is a schematic diagram of the material transportation process of the structure of the present invention; Figure 8 It is a partial explosion schematic diagram of the structure of the present invention; Fig. 9 It is a partial top view schematic diagram of the initial state of the material of the structure of the present invention; Fig.10 The structure of the present invention Fig. 9 A partial enlarged schematic diagram in the middle; Fig.11 It is a partial schematic diagram of the material unloading of the structure of the present invention; Fig.12 This is a schematic front view of the cooperation between the feed plate and the slider of the structure of the present invention.

[0017] In the figure: 1. workbench; 2. support legs; 3. top plate; 4. pillars; 5. lifting plate; 6. lifter; 7. stamping seat; 8. stamping rod; 9. side plate; 10. centering block; 11. guide block; 12. first inclined surface; 13. pressure block; 14. connecting rod; 15. rack; 16. gear; 17. screw; 18. slider; 19. feed plate; 20. second inclined surface; 21. blanking frame; 22. spring; 23. telescopic rod; 24. first guide rod; 25. second guide rod; 26. blanking block; 27. third inclined surface; 28. guide frame; 29. ​​waste collection box; 30. finished product collection box; 31. reinforcing ribs; 32. universal wheels; 33. brakes; 34. second elastic member; 35. block; 36. handrail. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 12 A punching device for door hinge processing, comprising a workbench 1, a stamping assembly, a feeding assembly, a clamping assembly and a collecting assembly, wherein the four corners below the workbench 1 are provided with legs 2, the stamping assembly comprises a top plate 3, a pillar 4, a lifting plate 5, a lifter 6, a stamping seat 7 and a stamping rod 8, the four corners below the top plate 3 are provided with pillars 4 fixed on the workbench 1, the lifter 6 passes through the center of the top plate 3 and is connected to the center of the top wall of the lifting plate 5, the stamping seat 7 is provided at the center below the lifting plate 5, the stamping rod 8 is also provided below the stamping seat 7, and the workbench 1 is also provided with a stamping hole adapted to the stamping rod 8; The top plate 3 is firmly fixed above the workbench 1 by means of the pillars 4 at the four corners, building a solid framework for the entire stamping action. The lifter 6 is installed at the center of the top plate 3. When the lifter 6 is started, it will generate a driving force in the vertical direction, driving the lifting plate 5 connected thereto to move up and down along a straight line. In this process, the two sets of symmetrical second guide rods 25 arranged on the lifting plate 5 pass through the top plate 3, accurately defining the movement trajectory of the lifting plate 5, so that it can only be lifted vertically to avoid deviation and shaking. The stamping seat 7 and the stamping rod 8 located at the center below the lifting plate 5 move down synchronously and stably with the lifting plate 5, and stamp towards the corresponding stamping holes on the workbench 1. Relying on the precise mechanical structure, the precise stamping position is guaranteed each time. The legs 2 provide stable support for the workbench 1, and the lifter 6 adopts a stable hydraulic cylinder; During actual use, a feeding component is further arranged on the workbench 1. The feeding component is arranged on the front side of the clamping component, and the feeding component drives the material to be fed into the clamping and positioning area of the clamping component. In this embodiment, the clamping component includes side plates 9, a first elastic member, and a fixture. The side plates 9 are symmetrically arranged on the left and right sides of the workbench 1. The first elastic member is arranged at one end of the side plate 9 close to the center of the workbench 1. The fixture includes a centering block 10 and a guiding block 11 in a U shape. The opening of the centering block 10 is arranged on the side away from the center of the workbench 1. The two free ends of the centering block 10 are slidably connected to the front and rear side walls of the side plate 9. A positioning groove is arranged at the center of one end of the centering block 10 close to the punching seat 7. The guiding block 11 is further arranged on the centering block 10. The guiding block 11 is arranged on the periphery of the positioning groove and at one end close to the feeding component. First inclined surfaces 12 are arranged at the two free ends of the centering block 10. Pressing blocks 13 adapted to the first inclined surfaces 12 are further arranged at the four corners below the lifting plate 5. A notch adapted to the pressing blocks 13 is further arranged on the workbench 1. When the feeding component drives the material to move to the clamping area of the clamping component, the lifting plate 5 drives the pressing blocks 13 to move downward. Initially, the first elastic member is in a contracted state. The first inclined surfaces 12 at the two free ends of the centering block 10 cooperate with the extrusion of the pressing blocks 13 when the lifting plate 5 descends, so that the centering block 10 can adaptively adjust its position. As the centering block 10 moves towards the center of the workbench 1, the guiding block 11 cooperates with the feeding of the material, so that the material is fixed in the positioning groove. At this time, the vertical side walls of the pressing blocks 13 abut against the free ends of the centering block 10. As the lifting plate 5 continues to move downward, the punching rod 8 below the punching seat 7 completes the punching of the material, and the waste is discharged from the punching hole. In this embodiment, a collecting component is further arranged at one end of the workbench 1 away from the feeding component for collecting waste and finished products.

[0020] In actual use, automatic feeding needs to be completed. For this purpose, the feeding assembly includes a connecting rod 14, a rack 15, a gear 16, a screw 17 and a feeding member. The connecting rod 14 is symmetrically arranged on both sides of the lower part of the lifting plate 5 near one end of the feeding assembly. A rack 15 is arranged below the connecting rod 14. A through hole adapted to the rack 15 is arranged on the workbench 1. Slide grooves are also symmetrically arranged on the left and right sides of the workbench 1. A screw 17 is rotatably arranged in the slide groove. The screw 17 penetrates the The through hole is connected to the center of the gear 16, the rack 15 is meshed with the gear 16, the feeding assembly includes a slider 18 and a feeding plate 19, the sliders 18 extending into the chute are symmetrically arranged on the left and right sides below the feeding plate 19, and the sliders 18 are provided with screw holes adapted to the screw 17, the connecting rod 14 protrudes from the pressing block 13 below, the feeding plate 19 is T-shaped, and the feeding plate 19 is also provided with a groove adapted to the material at one end close to the clamping assembly, the The top plate 3 is also provided with a blanking frame 21 near one end of the feeding assembly, and the blanking frame 21 is provided with a blanking hole that passes through from top to bottom. The bottom wall of the blanking frame 21 away from the top plate 3 is flush with the top wall of the feed plate 19, and the bottom wall of the blanking frame 21 near one end of the top plate 3 is provided with an opening for material output. When the feed plate 19 pushes the material to between the two groups of guide blocks 11 and stops, the feed plate 19 abuts against the opening of the blanking frame 21. When the feed plate 19 is at one end away from the clamping assembly At this time, the feed plate 19 exposes the feeding hole and opening, the guide block 11 is provided with a second inclined surface 20 at one end near the positioning groove, and a feeding gap adapted to the feed plate 19 is also provided between the guide block 11 and the workbench 1 below. The thickness of the feed plate 19 is lower than the thickness of the material. In the initial state, the feed plate 19 is in a position away from the clamping assembly. At this time, the feeding hole and opening of the feeding frame 21 are exposed, and the materials stacked in the feeding frame 21 can fall down in sequence and fall on the feed plate 19. When the lifting plate 5 starts to descend, the connecting rods 14 on both sides below it move downward synchronously, and the racks 15 at the lower end of the connecting rods 14 also move downward, and the racks 15 are meshed with the gears 16 in the left and right slides on the workbench 1. The gears 16 rotate under the drive of the racks 15, and the screw 17 connected to the center of the gears 16 also rotates.Since the slider 18 under the feed plate 19 has a screw hole adapted to the screw 17, based on the principle of threaded transmission, the slider 18 will carry the feed plate 19 along the slide groove toward the clamping component, and rely on the groove at the front end of the feed plate 19 to push the material smoothly. When the feed plate 19 pushes the material to the second inclined surface 20 of the two sets of guide blocks 11, the gear 16 and the rack 15 are misaligned at this time, and the slider 18 can no longer drive the feed plate 19 to feed. In addition, due to the self-locking property of the threaded connection between the screw 17 and the slider 18, even if the subsequent stamping Operation will not cause the gear 16 to rotate arbitrarily. When the feed plate 19 completes the feeding operation in coordination with the feed gap, the pressure block 13 has not yet contacted the first inclined surface 12 of the centering block 10. As the lifting plate 5 continues to descend, the second inclined surface 20 of the guide block 11 pushes the material to the positioning groove until the centering block 10 completely rests against the vertical side of the pressure block 13. At this time, the material is clamped in the positioning groove. It should be noted that the feed gap is relatively wide, and during the process of the centering block 10 centering and clamping the material, there will be no motion interference with the end of the feed plate 19.

[0021] In actual use, the first elastic member includes a spring 22 and a telescopic rod 23, the spring 22 is sleeved on the telescopic rod 23, both ends of the spring 22 and the telescopic rod 23 are respectively connected to the side plate 9 and the centering block 10, and the centering block 10 is also provided with a first guide rod 24 that passes through the side plate 9. The first guide rod 24 is set to two groups symmetrically arranged at both ends of the first elastic member. The telescopic rod 23 cooperates with the first guide rod 24 to ensure the stability of the movement of the centering block 10, and the spring 22 facilitates the stable resetting of the centering block 10.

[0022] In actual use, after a feeding processing operation is completed and fully reset, the clamping assembly and the feeding assembly are also reset. In a new round of feeding, the material to be processed pushes the original finished material to be fed after the feeding. As the centering block 10 approaches the stamping seat 7, a blanking block 26 is also provided at one end. The blanking block 26 is provided at the end away from the guide block 11. The edge of the material is provided with a chamfer. The end of the blanking block 26 away from the guide block 11 is also provided with a third inclined surface 27 adapted to the chamfer of the edge of the material. When the material to be processed is in the stamping position, the two groups of centering blocks 10 are not fully fitted with the material at this time. The chamfer of the processed material cooperates with the third inclined surface 27 of the blanking block 26 to push the blanking block 26 to continue to move during the continuous feeding of the two groups of centering blocks 10.

[0023] In actual use, the collection component includes a guide frame 28, a waste collection box 29, a finished product collection box 30, a reinforcing rib 31, a moving component and a connecting piece. The guide frames 28 are arranged on both sides below the end of the workbench 1 away from the feeding component, and the moving component is arranged at the four corners below the finished product collection box 30. The finished product collection box 30 is provided with a waste collection box 29 located between two groups of the guide frames 28 near the end of the workbench 1, and the upper opening of the waste collection box 29 is adapted to the stamping hole. A reinforcing rib 31 connected to the finished product collection box 30 is also arranged below the waste collection box 29. The moving component includes a universal wheel 32 and a brake 33. The universal wheels 32 are arranged at the four corners below the finished product collection box 30, and the brake 33 is arranged on the side of the universal wheel 32. Connecting pieces connected to the guide frame 28 are also arranged on the left and right sides of the waste collection box 29. The finished product collection box 30 is away from the end of the waste collection box 29 A handrail 36 is also provided, and the guide frame 28 cooperates with the connecting piece to facilitate the positioning of the collection assembly. Waste enters the waste collection box 29 through the stamping hole, and the finished product falls into the finished product collection box 30, strengthening the stability of the connection between the waste collection box 29 and the finished product collection box 30. The equipment is conveniently moved by the universal wheel 32, and the equipment is conveniently fixed by the brake 33. The handrail 36 facilitates further moving the equipment. The connecting piece includes a second elastic piece 34 and a block 35. The waste collection box 29 is symmetrically provided with movable grooves on the left and right sides of one end near the finished product collection box 30. The two ends of the second elastic piece 34 are respectively connected to the movable groove and the block 35. The two groups of guide frames 28 are also provided with a card hole adapted to the block 35. When the block 35 is aligned with the card hole, the second elastic piece 34 pushes the block 35 into the card hole, and cooperates with the brake 33 to facilitate stable fixing of the equipment. In this embodiment, the second elastic piece 34 can be composed of a spring and a telescopic rod to ensure the stability of the movement of the block 35.

[0024] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0025] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0026] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A punching device for processing a door hinge, comprising a workbench (1), a punching assembly, a feeding assembly, a clamping assembly and a collecting assembly, characterized in that: There are legs (2) provided at the four corners below the workbench (1). The stamping assembly includes a top plate (3), columns (4), a lifting plate (5), a lifter (6), a stamping seat (7), and a stamping rod (8). Columns (4) fixed to the workbench (1) are provided at the four corners below the top plate (3). The lifter (6) penetrates through the center of the top plate (3) and is connected to the center of the top wall of the lifting plate (5). A stamping seat (7) is provided at the center below the lifting plate (5). A stamping rod (8) is further provided below the stamping seat (7). A stamping hole adapted to the stamping rod (8) is also provided on the workbench (1). A feeding assembly is also provided on the workbench (1), and the feeding assembly is arranged on the front side of the clamping assembly. The clamping assembly includes side plates (9), a first elastic member, and a fixture. Side plates (9) are symmetrically arranged on the left and right sides of the workbench (1). The first elastic member is provided at one end of the side plate (9) close to the center of the workbench (1). The fixture includes a centering block (10) and a guiding block (11) in a shape of a "匚". The opening of the centering block (10) is arranged on the side away from the center of the workbench (1). The two free ends of the centering block (10) are slidably connected to the front and rear side walls of the side plate (9). A positioning groove is provided at the center of one end of the centering block (10) close to the stamping seat (7). A guiding block (11) is also provided on the centering block (10). The guiding block (11) is arranged on the periphery of the positioning groove and is arranged at one end close to the feeding assembly. First inclined surfaces (12) are provided at the two free ends of the centering block (10). Pressing blocks (13) adapted to the first inclined surfaces (12) are further provided at the four corners below the lifting plate (5). A notch adapted to the pressing block (13) is also provided on the workbench (1). A collecting assembly is also provided at one end of the workbench (1) away from the feeding assembly.

2. The punching device for door hinge processing according to claim 1, characterized in that: The feeding assembly comprises a connecting rod (14), a rack (15), a gear (16), a screw (17) and a feeding member. The connecting rod (14) is symmetrically arranged on both sides of the lower part of the lifting plate (5) near one end of the feeding assembly. A rack (15) is arranged below the connecting rod (14). A through hole matching the rack (15) is arranged on the workbench (1). Slide grooves are symmetrically arranged on the left and right sides of the workbench (1). A screw (17) is rotatably arranged in the slide groove. The screw (17) passes through the through hole and is connected to the gear (16). The toothed wheel (16) is centrally connected, the rack (15) is meshed with the gear (16), the feeding assembly comprises a slider (18) and a feeding plate (19), the sliders (18) extending into the sliding groove are symmetrically arranged on the left and right sides below the feeding plate (19), the sliders (18) are provided with screw holes matching the screw rod (17), the connecting rod (14) protrudes from the pressing block (13) below, the feeding plate (19) is T-shaped, and the feeding plate (19) is also provided with a groove matching the material at one end close to the clamping assembly.

3. The punching device for door hinge processing according to claim 2, characterized in that: A second inclined surface (20) is provided at one end of the guide block (11) close to the positioning groove, and a feed gap adapted to the feed plate (19) is provided between the lower portion of the guide block (11) and the workbench (1), wherein the thickness of the feed plate (19) is lower than the thickness of the material.

4. The punching device for door hinge processing according to claim 3, characterized in that: A material discharge frame (21) is further provided at one end of the top plate (3) close to the feeding assembly, and the material discharge frame (21) is provided with a material discharge hole which passes through from top to bottom. The bottom wall of the material discharge frame (21) at one end away from the top plate (3) is flush with the top wall of the feeding plate (19), and an opening for material output is provided at the bottom wall of the end of the material discharge frame (21) close to the top plate (3). When the feeding plate (19) pushes the material to between the two groups of guide blocks (11) and stops, the feeding plate (19) abuts against the opening of the material discharge frame (21). When the feeding plate (19) is at one end away from the clamping assembly, the feeding plate (19) exposes the material discharge hole and the opening.

5. The punching device for door hinge processing according to claim 4, characterized in that: The first elastic member comprises a spring (22) and a telescopic rod (23), the spring (22) being sleeved on the telescopic rod (23), and both ends of the spring (22) and the telescopic rod (23) being respectively connected to the side plate (9) and the centering block (10).

6. The punching device for door hinge processing according to claim 5, characterized in that: The centering block (10) is also provided with a first guide rod (24) penetrating the side plate (9), and the first guide rod (24) is provided in two groups symmetrically arranged at both ends of the first elastic member.

7. The punching device for door hinge processing according to claim 6, characterized in that: The lifting plate (5) is also provided with second guide rods (25) that pass through the top plate (3), and the second guide rods (25) are arranged in two groups symmetrically.

8. The punching device for door hinge processing according to claim 7, characterized in that: A material cutting block (26) is further provided at one end of the centering block (10) close to the punching seat (7); the material cutting block (26) is provided at one end away from the guide block (11); the edge of the material is provided with a rounded surface; and a third inclined surface (27) adapted to the rounded edge of the material is further provided at one end of the material cutting block (26) away from the guide block (11).

9. The punching device for door hinge processing according to claim 8, characterized in that: The collecting assembly comprises a guide frame (28), a waste collection box (29), a finished product collection box (30), a reinforcing rib (31), a moving assembly and a connecting piece. The guide frames (28) are arranged on both sides below one end of the workbench (1) away from the feeding assembly. The moving assembly is arranged at four corners below the finished product collection box (30). A waste collection box (29) located between two groups of the guide frames (28) is arranged at one end of the finished product collection box (30) close to the workbench (1). The upper opening of the waste collection box (29) is adapted to fit the punching hole. A reinforcing rib (31) connected to the finished product collection box (30) is also provided below the waste collection box (29); the moving assembly includes universal wheels (32) and brakes (33); the universal wheels (32) are provided at the four corners below the finished product collection box (30); the brakes (33) are provided around the universal wheels (32); connecting pieces connected to the guide frame (28) are also provided on the left and right sides of the waste collection box (29); and a handrail (36) is also provided at one end of the finished product collection box (30) away from the waste collection box (29).

10. The punching device for door hinge processing according to claim 9, characterized in that: The connecting member comprises a second elastic member (34) and a clamping block (35); movable grooves are symmetrically arranged on the left and right sides of one end of the waste collection box (29) close to the finished product collection box (30); two ends of the second elastic member (34) are respectively connected to the movable groove and the clamping block (35); and clamping holes matching the clamping blocks (35) are also arranged on the two groups of guide frames (28).

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