Hardware stamping forming device

Abstract

The application discloses a hardware stamping forming device and relates to the technical field of sheet metal stamping, which comprises a stamping table, a top plate fixedly connected above the stamping table and a stamping die installed on the top surface of the stamping table. The stamping die comprises an upper die and a lower die. The upper die is provided with a punching cutter head and a stamping and bending cutter head. The top plate is provided with a stamping cylinder for driving the upper die to move up and down. The lower die is provided with a placing table. The placing table is provided with a hole groove and a bending groove matched with the punching cutter head and the stamping and bending cutter head respectively. The placing table is provided with an installation groove communicated with the hole groove. After punching is completed, the hole periphery and the hole wall can be directly polished by using the same station polishing block, so that tearing flaws and burr defects generated during stamping forming can be eliminated, and the hole contour and the hole wall surface can be smoothed.

Description

Technical Field

[0001] This invention belongs to the field of metal sheet stamping technology, specifically a hardware stamping forming device. Background Technology

[0002] Sheet metal connectors are core basic components in the fields of electromechanical, home appliance and precision assembly. Their main forming process is a composite forming of thin metal sheet by stamping and bending and precise punching in the middle. The bending forms an assembly limiting structure, and the punching in the middle enables bolt insertion, positioning and locking functions. They are characterized by thin thickness, high forming accuracy requirements, large batch usage and strict assembly tolerance.

[0003] Existing traditional stamping forming equipment, when processing bent and punched sheet metal connectors, can only achieve the basic forming functions of bending and punching, resulting in a single structural function and obvious technical defects. During the punching and cutting process of thin metal sheets, the instantaneous shear stress of the punch and the local tensile deformation of the sheet metal easily cause defects such as plastic tearing, material flanging, burrs on the hole wall, and sharp edges at the hole opening, resulting in irregular hole contours and poor hole wall smoothness. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention proposes a hardware stamping forming apparatus.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A metal stamping forming apparatus includes a stamping table, a top plate fixedly connected above the stamping table, and a stamping die mounted on the top surface of the stamping table, wherein the stamping die includes:

[0007] The upper mold and the lower mold are provided. The upper mold is provided with a punching cutter and a stamping and bending cutter. A stamping cylinder for driving the upper mold to move up and down is installed on the top plate. The lower mold is provided with a placement platform. The placement platform is provided with a hole slot and a bending slot respectively used in conjunction with the punching cutter and the stamping and bending cutter. The placement platform is also provided with an installation slot that communicates with the hole slot.

[0008] A grinding assembly is disposed in a mounting groove. The grinding assembly includes a grinding block for grinding punched holes, located inside the groove. A support ring adapted to the grinding block is also installed inside the groove. The grinding block and the support ring form a complete ring.

[0009] The drive mechanism is located below the grinding assembly and is used to drive the grinding assembly to grind the hole wall after punching the hardware connector.

[0010] An auxiliary positioning component is located on the side of the drive mechanism to assist in locking the drive mechanism.

[0011] As a further preferred embodiment of this technical solution: the grinding assembly further includes:

[0012] The lifting frame is movably installed inside the mounting slot. A first electric push rod for driving the lifting frame to rise and fall is installed on the inner bottom wall of the mounting slot. A second round shaft is installed through the lifting frame, and the bottom of the second round shaft is rotatably mounted on the lifting frame. A second protruding strip is also fixedly installed on the outer wall of the second round shaft.

[0013] A first circular shaft is inserted through the inner side of a second circular shaft, and a first protrusion is fixedly connected to the first circular shaft. A first guide groove is provided on the inner wall of the second circular shaft for the first protrusion to slide.

[0014] The support ring is fixedly connected to the top surface of the lifting frame via a connecting column No. 1.

[0015] As a further preferred embodiment of this technical solution: the stamping die further includes an elastic adaptation mechanism.

[0016] The elastic adaptation mechanism includes a fixed frame fixedly connected to the inner wall of the mounting groove, a connecting block fixedly connected to the fixed frame, a second sliding shaft slidably mounted on the connecting block, a mounting seat fixedly connected to the top surface of the second sliding shaft, a fixed ring block fixedly connected to the mounting seat, and the fixed ring block arranged above the lifting frame. A rotating sleeve is rotatably mounted on the fixed ring block, and a second guide groove is provided on the rotating sleeve for the sliding of the second protrusion. The rotating sleeve is fixedly connected to the grinding block through the second connecting column, and a return spring connected between the connecting block and the mounting seat is sleeved on the outer side of the second sliding shaft.

[0017] As a further preferred embodiment of this technical solution: the driving mechanism includes:

[0018] A drive shaft is fixedly installed at the bottom of the first round shaft. A support frame is fixedly installed inside the mounting groove, and a servo motor for driving the drive shaft to rotate is installed on the support frame.

[0019] As a further preferred embodiment of this technical solution: the auxiliary positioning component includes:

[0020] A movable frame is movably mounted inside a mounting slot. A second electric push rod is installed inside the mounting slot to drive the movable frame to move. A sleeve is fixedly connected to the movable frame. A guide shaft is slidably mounted inside the sleeve. A positioning ball is fixedly connected to the end of the guide shaft away from the sleeve. A push spring is installed inside the sleeve. One end of the push spring is fixedly connected to the inner wall of the sleeve, and the other end of the push spring is fixedly connected to the guide shaft.

[0021] As a further preferred embodiment of this technical solution: the side wall of the drive shaft is provided with a positioning hole for the positioning ball.

[0022] As a further preferred embodiment of this technical solution: the top surface of the second circular shaft is an inclined surface, and the direction of the inclined surface is away from the fixing frame; a baffle is also installed inside the mounting groove.

[0023] As a further preferred embodiment of this technical solution: a pressure plate is provided at the bottom of the upper mold, a telescopic rod is provided between the pressure plate and the upper mold, and a butterfly spring is sleeved on the outside of the telescopic rod and arranged between the upper mold and the pressure plate;

[0024] A sliding shaft is fixedly connected to the lower mold, and the upper mold and the pressure plate are slidably mounted on the sliding shaft.

[0025] As a further preferred embodiment of this technical solution: the support ring, the grinding block, and the second circular shaft are all arranged concentrically.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. In this invention, in order to address the forming defects such as burrs at the hole opening and sharp edges that are prone to occur during the punching operation of hardware connectors, after the punching is completed, the periphery of the hole and the hole wall are directly ground by using a grinding block at the same station. This can eliminate the tearing defects and burr defects caused by stamping, and straighten the hole opening contour and smooth the hole wall surface.

[0028] 2. In this invention, by setting an elastic adaptation mechanism and utilizing the sliding fit structure of the return spring, the second sliding shaft, and the mounting base, the grinding block is always elastically fitted to the periphery of the bottom hole of the hardware connector. Compared with rigid fixed grinding, it can adaptively compensate for the thickness tolerance of the workpiece and the slight warping error of the plate surface. The grinding pressure is uniform and gentle. It can efficiently remove burrs, sharp edges, and hole wall defects generated by punching through the rotating grinding block, and can avoid problems such as hole collapse, hole diameter deformation, and plate surface dent caused by rigid extrusion. In addition, during the punching process, the lifting frame is used to restrict the support ring and the grinding block to the same height as the top of the hole groove, so that the two maintain a support position flush with the top of the hole groove. This can form a complete annular support and limit on the thin plate area around the hole at the moment of punching the hardware connector, and also avoid defects such as hole collapse, hole wall stretching and tearing, and plate surface dent around the hole during the punching process.

[0029] 3. In this invention, during the descent of the lifting frame, the top of the first circular shaft can extend relative to the second circular shaft to automatically push open the residual waste material in the punching hole. At the same time, the inclined surface and the baffle can guide the waste material to the outside of the working area, avoiding the problem of affecting continuous stamping operations.

[0030] 4. In this invention, the positioning ball disengages from the positioning hole during motor grinding operations to ensure smooth transmission; when the machine stops and resets, the positioning ball elastically engages with the positioning hole of the transmission shaft, which can offset the inertial deviation of the motor when it stops, assist the transmission shaft in precise locking, and effectively avoid the problem of the grinding block being misaligned due to inertia and misaligned with the support ring. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a partial exploded view of the stamping die of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the lower mold of the present invention;

[0034] Figure 4 This is a cross-sectional view of the placement platform of the present invention;

[0035] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0036] Figure 6 This is a cross-sectional view of the placement platform of the present invention from another perspective;

[0037] Figure 7 This is a partial structural schematic diagram of the stamping die of the present invention;

[0038] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0039] Figure 9 for Figure 7 Enlarged view of point C in the middle;

[0040] Figure 10 This is a partial structural schematic diagram of the grinding assembly of the present invention;

[0041] Figure 11 This is a partial cross-sectional view of the auxiliary positioning component of the present invention;

[0042] Figure 12 This is a partial structural schematic diagram of the grinding assembly of the present invention.

[0043] Legend: 1. Stamping table; 11. Top plate; 2. Stamping cylinder; 3. Stamping die; 31. Upper die; 311. Punching cutter head; 312. Stamping bending cutter head; 313. Telescopic rod; 314. Butterfly spring; 315. Pressure plate; 32. Lower die; 321. Placement platform; 3211. Bending groove; 3212. Hole groove; 322. No. 1 sliding shaft; 33. Grinding assembly; 331. Lifting frame; 332. No. 1 connecting column; 333. Support ring; 334. Grinding block; 336. No. 1 Round shaft; 3361, No. 1 convex strip; 337, No. 2 round shaft; 3371, No. 2 convex strip; 34, auxiliary positioning assembly; 341, movable frame; 342, sleeve; 343, guide shaft; 344, positioning ball; 345, push spring; 351, fixed frame; 352, connecting block; 353, No. 2 sliding shaft; 354, return spring; 355, mounting base; 356, fixed ring block; 357, rotating sleeve column; 358, No. 2 connecting column; 36, support frame; 37, transmission shaft; 38, baffle. Detailed Implementation

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1-12 This application provides a hardware stamping forming device, including a stamping table 1, with a top plate 11 fixedly connected above the stamping table 1. It should also be noted that a feeding mechanism (not shown in the figure) for step-type conveying of hardware connectors is installed on the stamping table 1, which is a commonly used conveying method in this industry and can be applied to this solution. A stamping die 3 is installed on the top surface of the stamping table 1, wherein the stamping die 3 includes:

[0046] The upper mold 31 and the lower mold 32 are provided. The upper mold 31 is provided with a punching cutter head 311 and a stamping bending cutter head 312. The top plate 11 is equipped with a stamping cylinder 2 for driving the upper mold 31 to move up and down. The lower mold 32 is equipped with a placement platform 321. The placement platform 321 is provided with a hole groove 3212 and a bending groove 3211 respectively used in conjunction with the punching cutter head 311 and the stamping bending cutter head 312. The placement platform 321 is provided with an installation groove that communicates with the hole groove 3212.

[0047] A grinding assembly 33 is disposed in a mounting groove. The grinding assembly 33 includes a grinding block 334 for grinding punched holes, located inside a hole groove 3212. A support ring 333 adapted to the grinding block 334 is also installed inside the hole groove 3212. The grinding block 334 and the support ring 333 form a complete ring.

[0048] The drive mechanism is located below the grinding assembly 33 and is used to drive the grinding assembly 33 to grind the hole wall after punching the hardware connector.

[0049] The auxiliary positioning component 34 is located on the side of the drive mechanism and is used to assist in locking the drive mechanism.

[0050] Specifically, the upper mold 31 is driven downward by the stamping cylinder 2 to stamp the hardware connector (metal connector) transported to the upper part of the lower mold 32. Further, the upper mold 31 drives the punching cutter 311 and the stamping bending cutter 312 on it to punch the hardware connector downward. The punching cutter 311 is used to punch holes in the hardware connector, and the stamping bending cutter 312 is used to bend the hardware connector. After punching, the support ring 333 is moved down to a position that will not affect the movement of the grinding block 334. Then, the grinding block 334 is driven by the drive mechanism to grind the bottom hole wall of the hardware connector after punching, smoothing out the sharp parts and burrs generated by punching, and improving the smoothness of the hardware connector after stamping.

[0051] Furthermore, the grinding assembly 33 also includes:

[0052] The lifting frame 331 is movably disposed inside the mounting slot. A first electric push rod for driving the lifting frame 331 to rise and fall is installed on the inner bottom wall of the mounting slot. A second round shaft 337 is disposed through the lifting frame 331, and the bottom of the second round shaft 337 is rotatably disposed on the lifting frame 331. A second protrusion 3371 is also fixedly disposed on the outer wall of the second round shaft 337.

[0053] A first circular shaft 336 is disposed through the inner side of a second circular shaft 337, and a first protrusion 3361 is fixedly connected to the first circular shaft 336. A first guide groove is provided on the inner side wall of the second circular shaft 337 for the first protrusion 3361 to slide. By setting the first protrusion 3361, the sliding relationship between the first circular shaft 336 and the second circular shaft 337 can be ensured, and the second circular shaft 337 can be rotated while the first circular shaft 336 rotates.

[0054] The support ring 333 is fixedly connected to the top surface of the lifting frame 331 via the first connecting column 332.

[0055] Specifically, the lifting frame 331 is lowered to a position below which it will not affect the rotation of the grinding block 334 by the first electric push rod. At the same time, the lifting frame 331 drives the second round shaft 337 to move downward. The second round shaft 337 slides downward on the outside of the first round shaft 336 and the first protrusion 3361 until the top of the first round shaft 336 protrudes from the top of the second round shaft 337. This can push away the waste material after punching the top of the second round shaft 337, so that the waste material can be cleaned away from the grinding assembly 33 in time, and the stamping operation can continue without being affected by the waste material. In addition, it should be added that a waste material cleaning mechanism (not shown in the figure) can be optionally installed inside the mounting slot to clean the waste material from the inside of the mounting slot. Due to cost issues, this can be selectively installed, or it can be cleaned manually.

[0056] Furthermore, the stamping die 3 also includes an elastic adaptation mechanism:

[0057] The elastic adaptation mechanism includes a fixed frame 351 fixedly connected to the inner wall of the mounting groove. A connecting block 352 is fixedly connected to the fixed frame 351. A second sliding shaft 353 is slidably arranged on the connecting block 352. A mounting seat 355 is fixedly connected to the top surface of the second sliding shaft 353. A fixing ring block 356 is fixedly connected to the mounting seat 355. The fixing ring block 356 is arranged above the lifting frame 331. A rotating sleeve 357 is rotatably arranged on the fixing ring block 356. A second guide groove is provided on the rotating sleeve 357 for the second protrusion 3371 to slide. The rotating sleeve 357 is fixedly connected to the grinding block 334 through a second connecting post 358. A return spring 354 is sleeved on the outer side of the second sliding shaft 353, connecting the connecting block 352 and the mounting seat 355. It should be noted that when the lifting frame 331 is at its highest point, the return spring 354 is in a compressed state.

[0058] Specifically, in the initial state, that is, during the downward movement of the upper mold 31 towards the metal stamping blank on the lower mold 32, the lifting frame 331 lifts the fixed ring block 356, and the rotating sleeve 357 on the fixed ring block 356 is also lifted. In addition, the rotating sleeve 357, through the second connecting column 358, restricts the grinding block 334 inside the hole groove 3212, forming a mating pad with the support ring 333 under the metal stamping blank, which can prevent damage and tearing in the stamping hole during the stamping process. When the lifting frame 331... 1. When the support force is removed and the support ring 333 is being polished, the second sliding shaft 353 will tend to lift the mounting base 355 upwards. The mounting base 355 will then sequentially drive the fixed ring block 356, the rotating sleeve 357, the second connecting column 358, and the polishing block 334 on it to move upwards. This means that the polishing block 334 can be made to fit against the bottom surface of the hardware connector. During the polishing process, it is not a rigid polishing, but rather the polishing block 334 can be made to fit against the bottom surface of the hardware connector for polishing.

[0059] Furthermore, the driving mechanism includes:

[0060] The drive shaft 37 is fixedly installed at the bottom of the first round shaft 336. A support frame 36 is fixedly installed inside the mounting groove. A servo motor for driving the drive shaft 37 to rotate is installed on the support frame 36. It should be noted that the servo motor is an existing product with a built-in locking function and start / stop encoder, which is used to control the servo motor to keep the stop position of the drive shaft 37 consistent each time. This solution only uses it.

[0061] Specifically, the servo motor drives the transmission shaft 37 to rotate, which in turn drives the first round shaft 336 on it to rotate. Under the action of the first protrusion 3361, the second round shaft 337 rotates. Under the action of the second protrusion 3371, the second round shaft 337 drives the rotating sleeve 357 to rotate relative to the fixed ring block 356. The rotating sleeve 357 drives the grinding block 334 on it to rotate and grind the bottom of the stamping hole of the hardware connector through the second connecting column 358. In addition, this process is to lower the support ring 333 to a position lower than the fixed ring block 356.

[0062] Furthermore, the auxiliary positioning component 34 includes:

[0063] A movable frame 341 is movably mounted inside a mounting slot. A second electric push rod is installed inside the mounting slot to drive the movable frame 341 to move. A sleeve 342 is fixedly connected to the movable frame 341. A guide shaft 343 is slidably mounted inside the sleeve 342. A positioning ball 344 is fixedly connected to the end of the guide shaft 343 away from the sleeve 342. A push spring 345 is installed inside the sleeve 342. One end of the push spring 345 is fixedly connected to the inner wall of the sleeve 342, and the other end of the push spring 345 is fixedly connected to the guide shaft 343.

[0064] It should be added that the second electric push rod and the servo motor are connected by the same controller, which is used to control the start and stop of the second electric push rod and the servo motor. Furthermore, when the servo motor is started to drive the transmission shaft 37 to rotate, the second electric push rod drives the movable frame 341 on it to move away from the transmission shaft 37, so that the positioning ball 344 is pulled out from the inside of the positioning hole, allowing the transmission shaft 37 to rotate. When the servo motor needs to stop, the second electric push rod is started and reset in the reverse direction. When the transmission shaft 37 is about to stop rotating, the positioning ball 344 will first come into contact with the surface of the transmission shaft 37. During the stopping process, the positioning ball 344 will re-enter the positioning hole to assist the transmission shaft 37 in locking.

[0065] Furthermore, the side wall of the drive shaft 37 is provided with a positioning hole adapted to the positioning ball 344, which can drive the grinding block 334 into the interior of the positioning hole during the process of applying elastic force by pushing the spring 345. This assists the servo motor in driving the drive shaft 37 to stop rotating and avoids the problem of misalignment between the grinding block 334 and the support ring 333 due to the grinding block 334 stopping and misaligning under inertia.

[0066] Furthermore, the top surface of the second round shaft 337 is inclined, and the direction of the inclined surface is away from the fixed frame 351, thereby guiding the waste material away from the area that does not affect normal operation. A baffle 38 is also installed inside the mounting groove, which is also used to guide the waste material after punching away from the stamping die 3.

[0067] Furthermore, a pressure plate 315 is provided at the bottom of the upper mold 31, and a telescopic rod 313 is provided between the pressure plate 315 and the upper mold 31. A butterfly spring 314 is sleeved on the outside of the telescopic rod 313 and arranged between the upper mold 31 and the pressure plate 315 for resetting the pressure plate 315. The pressure plate 315 can press on the top surface of the metal connector stamping blank during the stamping process and cooperate with the placement table 321 to restrict the movement of the metal connector stamping blank and ensure the stability during the stamping process.

[0068] A first sliding shaft 322 is also fixedly connected to the lower mold 32. The upper mold 31 and the pressure plate 315 are both slidably arranged on the first sliding shaft 322, which serves as a guide.

[0069] Furthermore, the support ring 333, the grinding block 334, and the second circular shaft 337 are all arranged concentrically.

[0070] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A hardware stamping forming apparatus, comprising a stamping table (1), wherein a top plate (11) is fixedly connected above the stamping table (1), characterized in that: A stamping die (3) is mounted on the top surface of the stamping table (1), wherein the stamping die (3) includes: The upper mold (31) and the lower mold (32) are provided. The upper mold (31) is provided with a punching cutter head (311) and a stamping bending cutter head (312). The top plate (11) is provided with a stamping cylinder (2) for driving the upper mold (31) to move up and down. The lower mold (32) is provided with a placement platform (321). The placement platform (321) is provided with a hole groove (3212) and a bending groove (3211) respectively used in conjunction with the punching cutter head (311) and the stamping bending cutter head (312). The placement platform (321) is provided with an installation groove that communicates with the hole groove (3212). A grinding assembly (33) is disposed in a mounting groove. The grinding assembly (33) includes a grinding block (334) for grinding punched holes, located inside the hole groove (3212). A support ring (333) adapted to the grinding block (334) is also installed inside the hole groove (3212). The grinding block (334) and the support ring (333) form a complete ring. The drive mechanism is located below the grinding assembly (33) and is used to drive the grinding assembly (33) to grind the hole wall after punching the hardware connector; An auxiliary positioning component (34) is provided on the side of the drive mechanism to assist in locking the drive mechanism.

2. The hardware stamping and forming device according to claim 1, characterized in that, The grinding assembly (33) also includes: The lifting frame (331) is movably disposed inside the mounting slot. A first electric push rod for driving the lifting frame (331) to rise and fall is installed on the inner bottom wall of the mounting slot. A second round shaft (337) is disposed through the lifting frame (331), and the bottom of the second round shaft (337) is rotatably disposed on the lifting frame (331). A second protrusion (3371) is also fixedly disposed on the outer wall of the second round shaft (337). A first circular shaft (336) is disposed through the inner side of a second circular shaft (337), and a first protrusion (3361) is fixedly connected to the first circular shaft (336). A first guide groove for sliding the first protrusion (3361) is provided on the inner wall of the second circular shaft (337). The support ring (333) is fixedly connected to the top surface of the lifting frame (331) by the first connecting column (332).

3. The hardware stamping and forming apparatus according to claim 2, characterized in that, The stamping die (3) also includes an elastic adaptation mechanism: The elastic adaptation mechanism includes a fixed frame (351) fixedly connected to the inner wall of the mounting groove. A connecting block (352) is fixedly connected to the fixed frame (351). A second sliding shaft (353) is slidably arranged on the connecting block (352). A mounting seat (355) is fixedly connected to the top surface of the second sliding shaft (353). A fixing ring block (356) is fixedly connected to the mounting seat (355), and the fixing ring block (356) is arranged on the lifting frame (351). Above 31), a rotating sleeve (357) is rotatably provided on the fixed ring block (356). The rotating sleeve (357) is provided with a second guide groove for sliding of the second protrusion (3371). The rotating sleeve (357) is fixedly connected to the grinding block (334) through the second connecting column (358). A return spring (354) is sleeved on the outside of the second sliding shaft (353) and connected between the connecting block (352) and the mounting base (355).

4. The hardware stamping and forming apparatus according to claim 1, characterized in that, The drive mechanism includes: The drive shaft (37) is fixedly installed at the bottom of the first round shaft (336). A support frame (36) is fixedly installed inside the mounting groove. A servo motor for driving the drive shaft (37) to rotate is installed on the support frame (36).

5. The hardware stamping and forming apparatus according to claim 4, characterized in that, The auxiliary positioning component (34) includes: A movable frame (341) is movably disposed inside a mounting slot. A second electric push rod is disposed inside the mounting slot to drive the movable frame (341) to move. A sleeve (342) is fixedly connected to the movable frame (341). A guide shaft (343) is slidably disposed inside the sleeve (342). A positioning ball (344) is fixedly connected to one end of the guide shaft (343) away from the sleeve (342). A push spring (345) is installed inside the sleeve (342). One end of the push spring (345) is fixedly connected to the inner wall of the sleeve (342), and the other end of the push spring (345) is fixedly connected to the guide shaft (343).

6. The hardware stamping forming apparatus according to claim 5, characterized in that, The drive shaft (37) has a positioning hole on its side wall that is adapted to the positioning ball (344).

7. The hardware stamping and forming apparatus according to claim 2, characterized in that, The top surface of the second circular shaft (337) is an inclined surface, and the direction of the inclined surface is away from the fixing frame (351). A baffle (38) is also installed inside the mounting groove.

8. The hardware stamping and forming apparatus according to claim 1, characterized in that, The bottom of the upper mold (31) is provided with a pressure plate (315), and a telescopic rod (313) is provided between the pressure plate (315) and the upper mold (31). A butterfly spring (314) is sleeved on the outside of the telescopic rod (313) and arranged between the upper mold (31) and the pressure plate (315). The lower mold (32) is also fixedly connected to a sliding shaft (322), and the upper mold (31) and the pressure plate (315) are both slidably arranged on the sliding shaft (322).

9. A hardware stamping and forming apparatus according to claim 2, characterized in that, The support ring (333), grinding block (334) and second circular shaft (337) are all arranged at the same center.

Images