Hardware product punch forming structure

Abstract

The invention relates to the technical field of punch forming, and discloses a hardware punch forming structure which comprises a punching part, the punching part comprises a workbench, the workbench is fixedly connected with a hydraulic cylinder through a rack arranged on the upper surface of the workbench, and the output end of the hydraulic cylinder is fixedly connected with an upper die set; a lower module is fixedly connected to the interior of the workbench; and the discharging part comprises a rolling shaft, and the outer end of the rolling shaft is rotationally connected with a side plate. The hardware product punch forming structure can effectively solve the problems that in the prior art, when metal plates pass through punching equipment, different metal materials are sheared or formed, due to metal breakage and plastic deformation, tiny protrusions can be formed on the edges of parts, high-speed punching can aggravate breakage of the materials, more burrs are generated, and the product quality is influenced. And burrs enable the actual size of the part to exceed the tolerance range required by the design, so that the assembly precision of the part and other parts is influenced, and the assembly is difficult.

Description

Technical Field

[0001] The invention relates to the technical field of stamping and forming, and in particular to a stamping and forming structure for hardware products. Background Art

[0002] Stamping is a metal processing method. It refers to the process of applying pressure to metal sheets on a press by using a die to make the metal sheets plastically deform, thereby obtaining parts of the desired shape and size. Stamping is mainly based on the principle of plastic deformation of metals. When external pressure acts on metal sheets, the stress state inside the sheet changes. When the stress reaches the yield strength of the material, the metal begins to plastically deform.

[0003] In the prior art, when metal sheets are sheared or formed by stamping equipment, tiny protrusions will be formed on the edge of the parts due to metal fracture and plastic deformation. High-speed stamping may aggravate the fracture of the material, thus generating more burrs. The burrs will make the actual size of the parts exceed the tolerance range required by the design, affecting the assembly accuracy of the parts and other components, and causing assembly difficulties. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a hardware product stamping and forming structure, which can effectively solve the problem that when metal sheets in the prior art pass through stamping equipment and different metal materials are sheared or formed, small protrusions will be formed on the edges of parts due to metal fracture and plastic deformation. High-speed stamping may aggravate the fracture of materials, thereby generating more burrs. The burrs will cause the actual size of the parts to exceed the tolerance range required by the design, affecting the assembly accuracy of the parts and other components, resulting in assembly difficulties.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a hardware product stamping forming structure, comprising:

[0009] A stamping part, the stamping part comprises a workbench, the workbench is fixedly connected to a hydraulic cylinder via a frame arranged on the upper surface thereof, and the output end of the hydraulic cylinder is fixedly connected to an upper die set, and the interior of the workbench is fixedly connected to a lower die set;

[0010] The unloading part includes a roller, the outer end of the roller is rotatably connected to a side plate, two side plates are provided and are symmetrically distributed with the roller as the center, a conveyor belt is provided between a pair of side plates and is in contact with the outer surface of the roller circumference, and the unloading part also includes a support frame, the lower surface of the support frame is rotatably connected to an output shaft, and the end of the output shaft away from the support frame is fixedly connected to a polishing wheel that can be used for grinding external parts.

[0011] Furthermore, a groove is provided on the outer surface of the conveyor belt, and a limit stop rod is fixedly connected to the outer surface of the conveyor belt. The outer end of the limit stop rod is in contact with the outer surface of the side plate, and a support leg is fixedly connected to the lower surface of the side plate, and a polishing brush is fixedly connected to the lower surface of the polishing wheel.

[0012] Furthermore, it also includes a loading part, which includes a loading platform, and the upper surface of the loading platform is fixedly connected to a roller conveyor frame, and a limiting component that can be used to limit the position of the external sheet material is provided on the side of the roller conveyor frame close to the workbench.

[0013] Furthermore, the limiting assembly includes a support plate, the internal rotation of which is connected to a bidirectional threaded rod, the outer surface of which is fixedly connected to a fixing seat that fits the upper surface of the loading platform, and the fixing seat is slidably connected to a connecting plate that is sleeved on the circumferential outer surface of the bidirectional threaded rod via a sliding groove opened on its upper surface.

[0014] Furthermore, a connecting frame is fixedly connected to one side of the connecting plate away from the supporting plate, and a circumferential outer surface of the connecting frame is rotatably connected to a limiting roller. Two limiting rollers are provided and are symmetrically distributed with the bidirectional threaded rod as the center.

[0015] Furthermore, one end of the bidirectional threaded rod is fixedly connected to a hand wheel, and a side of the hand wheel away from the bidirectional threaded rod is rotatably connected to a crank handle.

[0016] Furthermore, the workbench is slidably connected to a collection box via a cavity opened inside the workbench.

[0017] Beneficial Effects

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The present invention is provided with a conveyor belt, a support frame and a polishing wheel. When the stamped hardware parts fall onto the conveyor belt, the hardware parts are conveyed to the bottom of the polishing wheel along with the moving direction of the conveyor belt. The lower surface of the polishing wheel is provided with a plurality of polishing brushes, which are closely attached to the upper surface of the conveyor belt. When the polishing wheel rotates at a high speed, the polishing brushes can polish the burrs generated by the stamping edge of the hardware parts. The outer surface of the conveyor belt is provided with a groove and a limit stopper, which increase the friction force and also impose certain restrictions on the position of the hardware parts. In the polishing process of the hardware parts, the hardware parts are polished by the high-speed rotation of the polishing wheel, and at the same time, they are affected by the conveyor belt moving away from the workbench, and are frictionally polished with the polishing wheel relative to each other. The hardware parts are subjected to the polishing friction in two directions, and the polishing effect is better, and the burrs on the edges of the hardware parts can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the stamping part of an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the upper module and the lower module of an embodiment of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a roller conveyor frame and a limiting assembly according to an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a blanking part according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic cross-sectional structure diagram of a conveyor belt according to an embodiment of the present invention;

[0027] Figure 7 It is a schematic structural diagram of a support frame, an output shaft, a polishing wheel and a polishing brush according to an embodiment of the present invention.

[0028] The numbers in the figure represent respectively: 1. stamping part; 11. workbench; 111. collection box; 12. frame; 13. hydraulic cylinder; 14. upper die set; 15. lower die set; 2. unloading part; 21. roller; 22. side plate; 23. conveyor belt; 231. groove; 232. limit stop rod; 24. support frame; 25. output shaft; 26. polishing wheel; 261. polishing brush; 3. loading part; 31. loading platform; 32. roller conveyor frame; 33. limit assembly; 331. support plate; 332. two-way threaded rod; 333. fixed seat; 3331. slide groove; 334. connecting plate; 335. connecting frame; 336. limit roller; 337. hand wheel. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example:

[0032] See also Figure 1-Figure 7 The present invention provides a technical solution: a hardware product stamping forming structure, comprising:

[0033] The stamping part 1 includes a workbench 11, the workbench 11 is fixedly connected to a hydraulic cylinder 13 through a frame 12 arranged on the upper surface thereof, and the output end of the hydraulic cylinder 13 is fixedly connected to an upper die set 14, and the interior of the workbench 11 is fixedly connected to a lower die set 15, and the upper die set 14 can cooperate with the lower die set 15 under the action of the hydraulic cylinder 13 to stamp a metal sheet;

[0034] The unloading part 2 includes a roller 21, the outer end of the roller 21 is rotatably connected to a side plate 22, two side plates 22 are provided and are symmetrically distributed with the roller 21 as the center, a conveyor belt 23 is provided between a pair of side plates 22 and is in contact with the outer surface of the circumference of the roller 21, and the unloading part 2 also includes a support frame 24, the lower surface of the support frame 24 is rotatably connected to an output shaft 25, and the end of the output shaft 25 away from the support frame 24 is fixedly connected to a polishing wheel 26 that can be used for grinding external parts.

[0035] A groove 231 is provided on the outer surface of the conveyor belt 23, and a limit stop rod 232 is fixedly connected to the outer surface of the conveyor belt 23. A support leg is fixedly connected to the lower surface of the side plate 22. The outer end of the limit stop rod 232 is in contact with the outer surface of the side plate 22. A polishing brush 261 is fixedly connected to the lower surface of the polishing wheel 26. The groove 231 is used to increase the friction force of the outer surface of the conveyor belt 23, and the limit stop rod 232 can prevent poor polishing effect caused by displacement during polishing.

[0036] The loading part 3 includes a loading platform 31 , a roller conveyor frame 32 is fixedly connected to the upper surface of the loading platform 31 , and a limiting component 33 for limiting the position of the external sheet material is arranged on the side of the roller conveyor frame 32 close to the workbench 11 .

[0037] The limiting assembly 33 includes a support plate 331, which is internally rotatably connected to a bidirectional threaded rod 332, and the outer surface of the support plate 331 is fixedly connected to a fixing seat 333 that fits the upper surface of the loading platform 31. The fixing seat 333 is slidably connected to a connecting plate 334 that is sleeved on the outer surface of the circumference of the bidirectional threaded rod 332 through a sliding groove 3331 provided on its upper surface. The bidirectional threaded rod 332 can synchronously move the connecting plates 334 on both sides inward or outward at the same time.

[0038] A connecting frame 335 is fixedly connected to the side of the connecting plate 334 away from the supporting plate 331. The circumferential outer surface of the connecting frame 335 is rotatably connected to a limiting roller 336. Two limiting rollers 336 are provided and are symmetrically distributed with the bidirectional threaded rod 332 as the center. The limiting rollers 336 are in contact with the side of the metal sheet, and the friction force is small, which will not cause wear to the metal sheet.

[0039] One end of the bidirectional threaded rod 332 is fixedly connected to a hand wheel 337 , and a side of the hand wheel 337 away from the bidirectional threaded rod 332 is rotatably connected to a crank.

[0040] The workbench 11 is slidably connected to a collecting box 111 via a cavity opened inside the workbench 11 .

[0041] The process of stamping metal sheets:

[0042] In actual application, the external metal sheet is conveyed to the top of the roller conveyor frame 32 by the external conveying device, and conveyed to the workbench 11 following the rotation direction of the roller conveyor frame 32. The front end of the metal sheet is manually passed through the pair of limiting rollers 336. In the initial state, the outer surface of the connecting plate 334 fits with the outer surface of the supporting plate 331, so that the distance between the pair of limiting rollers 336 is in the maximum state, so that the metal sheet can pass smoothly. At this time, the lower surface of the metal sheet fits with the upper surface of the roller conveyor frame 32, and the top of the fixed seat 333 is lower than the top of the roller conveyor frame 32. Therefore, the lower surface of the metal sheet does not fit with the upper surface of the fixed seat 333. In order to ensure stability during the stamping process, the position of the metal sheet needs to be fixed. Therefore, the user holds the crank handle tightly to drive the hand wheel 337 to rotate. Since the hand wheel 337 is fixedly connected to the bidirectional threaded rod 332, the bidirectional threaded rod 332 also rotates when the hand wheel 337 rotates.

[0043] During the shaking of the hand wheel 337, the threads on the outer surface of the bidirectional threaded rod 332 mesh with the threads inside the connecting plate 334, driving the connecting plates 334 on both sides to move closer to the middle at the same time. The lower surface of the connecting plate 334 is provided with a slider, which slides smoothly in the slide groove 3331, which can ensure the stability of the connecting plate 334 during the movement and play a limiting role. When the connecting plates 334 on both sides are close to each other, the adjacent surfaces of the two connecting plates 334 are provided with limiting rollers 336 through the connecting frame 335, and one group of limiting rollers 336 and the connecting plate 334 are in a relatively static position relationship. At this time, the two limiting rollers 336 gradually move closer to each other under the action of the movement of the connecting plate 334, until the outer surfaces of the two limiting rollers 336 are in contact with the side surface of the metal sheet, and the user stops shaking the hand wheel 337 and fixes it through the internal self-locking structure. Since the metal sheet has a certain thickness and the lower surface of the limiting roller 336 is completely in contact with the upper edge of the fixing seat 333, the metal sheet will not get stuck during the loading process.

[0044] The metal sheet continues to be conveyed so that its front end enters the upper surface of the workbench 11. As it continues to move forward, the metal sheet is located between the upper die set 14 and the lower die set 15, and the lower surface of the metal sheet is in contact with the upper surface of the lower die set 15. At this time, the external drive motor is started to drive the hydraulic cylinder 13 on the lower surface of the frame 12. The output end of the hydraulic cylinder 13 drives the upper die set 14 to press down, and the metal sheet placed between the upper die set 14 and the lower die set 15 is stamped. After the stamping is completed, the metal waste falls into the inside of the collection box 111, and the hardware parts prepared by stamping will continue to fall on the upper surface of the lower die set 15. A feeding cylinder is also provided on the upper surface of the workbench 11, which can eject the prepared hardware parts to the upper surface of the conveyor belt 23. The working interval of the feeding cylinder is the same as the working gap of the hydraulic cylinder 13, and can cooperate with the upper die set 14 and the lower die set 15 without affecting the stamping action. When the stamping completes a certain procedure, the collection box 111 is pulled out from the inside of the workbench 11 by pulling the handle on the outside of the collection box 111, and the metal waste is removed cleanly.

[0045] After preparing a hardware part, the metal sheet continues to be transported from the roller conveyor frame 32 to the workbench 11 for a distance to meet the next stamping. During the conveying process of the metal sheet, the lower surface of the metal sheet fits with the upper surface of the roller conveyor frame 32, and the two sides of the metal sheet fit with the circumferential outer surface of the limiting roller 336, and the limiting roller 336 will rotate with the continuous conveying of the metal sheet, and the friction with the metal sheet is small, so the metal sheet will not be scratched.

[0046] The process of polishing and grinding hardware parts:

[0047] The rollers 21 on both sides of the unloading part 2 rotate clockwise, driving the conveyor belt 23 on its circumferential surface to rotate, and the legs on the lower surface of the side plate 22 make the conveyor belt 23 slightly lower than the upper surface of the workbench 11. When the prepared hardware parts are sent to the upper surface of the conveyor belt 23 by the unloading cylinder, since the outer surface of the conveyor belt 23 is provided with a plurality of grooves 231, its surface is uneven and the friction is large. After the hardware parts are placed on the upper surface of the conveyor belt 23, they move away from the workbench 11 as the conveyor belt 23 rotates. After moving a short distance, the hardware parts enter the lower part of the polishing wheel 26. The support frame 24 is provided with a driving device inside, which can rotate the output shaft 25 at high speed, and the polishing wheel 26 fixedly connected to the lower surface of the output shaft 25 rotates at high speed. The polishing brush 261 arranged on the lower surface of the polishing wheel 26 fits tightly with the upper surface of the hardware parts. When the polishing wheel 26 rotates at high speed, the polishing brush 261 will grind the burrs generated by the stamping edges of the hardware parts. Since the upper surface of the conveyor belt 23 is fixedly connected to the limit stop rod 232, there are multiple limit stop rods 232, and one is provided at a certain distance on the outer surface of the conveyor belt 23, so that the stamped hardware parts will not fly out under the high-speed rotation of the polishing wheel 26. The front and rear limit stop rods 232 are used to resist, and the left and right sides are provided with side plates 22 for resistance. The outer surface of the conveyor belt 23 at the bottom is provided with multiple grooves 231, the outer surface is uneven, and the friction is large, and the polishing wheel 26 is provided on the top to fit it. The hardware parts are positioned in multiple directions, and the polishing and grinding steps can be completed smoothly.

[0048] During the polishing process of the hardware parts, the hardware parts are polished by the high-speed rotation of the polishing wheel 26, and are also polished by friction due to the movement of the conveyor belt 23 away from the workbench 11, so that the polishing effect is better. When the hardware parts continue to move above the conveyor belt 23 until the upper surface thereof is separated from the polishing wheel 26, the step of polishing and grinding is completed at this time, and as the conveyor belt 23 moves away from the workbench 11, the collection action is completed on the rightmost side, and the stamped and polished hardware parts are transported to the next step. During the polishing process, a certain amount of debris will be generated and remain above the conveyor belt 23, and fall inside the groove 231. As the conveyor belt 23 rotates, when the conveyor belt 23 originally at the top rotates to the bottom, the debris remaining inside it will be naturally removed to ensure that the upper surface of the conveyor belt 23 is clean and tidy when it rotates to the top again, and friction will not be caused to the lower surface of the hardware parts, and the step of polishing and grinding will not be affected.

[0049] To sum up, the stamping process of hardware parts has the following advantages:

[0050] Advantage 1. During the feeding process of metal sheets, by shaking the hand wheel 337, the two connecting plates 334 meshing with the bidirectional threaded rod 332 are moved inward, the distance between the two limiting rollers 336 is reduced, and the two sides of the metal sheet between the two limiting rollers 336 are restricted, so that no deviation occurs during the stamping process, the stability of the processing process is ensured, and the processing quality is improved. At the same time, the movable limiting roller 336 can meet the processing needs of metal sheets of different widths, thereby improving the applicability of the limiting component 33.

[0051] Advantage 2: A loading part 3 is arranged at the front end of the stamping part 1, and a unloading part 2 is arranged at the rear end of the stamping part 1. The degree of automation is high, and manual loading and unloading is unnecessary. While improving production efficiency, safety performance is also improved.

[0052] Advantage three: A polishing wheel 26 is arranged above the conveyor belt 23 in the unloading part 2, and when the polishing wheel 26 rotates at high speed, the polishing brush 261 will grind the burrs produced by the stamping edges of the hardware parts. The outer surface of the conveyor belt 23 is provided with a groove 231 and a limit stop rod 232, which increases the friction force while also limiting the position of the hardware parts to a certain extent.

[0053] Advantage 4: During the polishing process of hardware parts, the hardware parts are polished by the high-speed rotation of the polishing wheel 26, and at the same time, they are affected by the movement of the conveyor belt 23 away from the workbench 11, and are frictionally polished with the polishing wheel 26 relative to each other. The hardware parts are subjected to polishing friction in two directions, and the polishing effect is better.

[0054] Advantage 5: During the grinding process, some debris will remain on the top of the conveyor belt 23 and fall into the inside of the groove 231. As the conveyor belt 23 rotates, when the conveyor belt 23 originally at the top rotates to the bottom, the debris remaining inside it will be naturally removed, completing the cleaning of the surface of the conveyor belt 23 to ensure that the upper surface of the conveyor belt 23 is neat and clean when it rotates to the top again, without causing friction to the lower surface of the hardware parts, and without affecting the grinding and polishing steps.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stamping structure for hardware products, characterized in that: include: A stamping part (1), the stamping part (1) comprising a workbench (11), the workbench (11) being fixedly connected to a hydraulic cylinder (13) via a frame (12) arranged on an upper surface thereof, and an output end of the hydraulic cylinder (13) being fixedly connected to an upper die set (14), and a lower die set (15) being fixedly connected inside the workbench (11); A material discharge portion (2), the material discharge portion (2) comprising a roller (21), the outer end of the roller (21) being rotatably connected to a side plate (22), two side plates (22) being provided and symmetrically distributed with the roller (21) as the center, a conveying belt (23) being arranged between a pair of the side plates (22) and being in contact with the outer circumferential surface of the roller (21), the material discharge portion (2) further comprising a support frame (24), the lower surface of the support frame (24) being rotatably connected to an output shaft (25), and one end of the output shaft (25) away from the support frame (24) being fixedly connected to a polishing wheel (26) for grinding external parts.

2. A metal product stamping structure according to claim 1, characterized in that: The outer surface of the conveying belt (23) is provided with a groove (231), the outer surface of the conveying belt (23) is fixedly connected to a limit stop rod (232), the lower surface of the side plate (22) is fixedly connected to a leg, the outer end of the limit stop rod (232) is in contact with the outer surface of the side plate (22), and the lower surface of the polishing wheel (26) is fixedly connected to a polishing brush (261).

3. A metal product stamping structure according to claim 1, characterized in that: The machine also comprises a loading section (3), wherein the loading section (3) comprises a loading platform (31), the upper surface of the loading platform (31) is fixedly connected to a roller conveyor frame (32), and a limiting component (33) for limiting the position of an external sheet material is provided on a side of the roller conveyor frame (32) close to the workbench (11).

4. A metal product stamping structure according to claim 3, characterized in that: The limiting assembly (33) comprises a support plate (331), the interior of the support plate (331) is rotatably connected to a bidirectional threaded rod (332), the outer surface of the support plate (331) is fixedly connected to a fixing seat (333) that fits the upper surface of the loading platform (31), and the fixing seat (333) is slidably connected to a connecting plate (334) sleeved on the outer circumferential surface of the bidirectional threaded rod (332) via a sliding groove (3331) provided on its upper surface.

5. A metal product stamping structure according to claim 4, characterized in that: A connecting frame (335) is fixedly connected to one side of the connecting plate (334) away from the supporting plate (331); a circumferential outer surface of the connecting frame (335) is rotatably connected to a limiting roller (336); two limiting rollers (336) are provided and are symmetrically distributed around the bidirectional threaded rod (332).

6. A metal product stamping structure according to claim 4, characterized in that: One end of the bidirectional threaded rod (332) is fixedly connected to a hand wheel (337), and a side of the hand wheel (337) away from the bidirectional threaded rod (332) is rotatably connected to a crank.

7. The metal product stamping structure according to claim 1, characterized in that: The workbench (11) is slidably connected to a collection box (111) via a cavity opened inside the workbench (11).

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