Stamping device for sheet metal part machining

Abstract

The invention discloses a stamping device for sheet metal part machining, and relates to the technical field of stamping machining.The stamping device comprises a stamping mechanism and a discharging mechanism, and the stamping mechanism is arranged on a workbench; the two discharging mechanisms are symmetrically arranged on the two sides of the workbench, each discharging mechanism comprises a material hooking assembly and a material hooking rope, one end of each material hooking rope is a fixed end, the other end of each material hooking rope is a rolling end, each material hooking assembly comprises a rope hook and a hook rope winding assembly, and a rope hook is arranged at the output end of each hook rope winding assembly. Under the driving of the rope hooking and winding assembly, the rope hook is used for hooking the material hooking rope to be wound from the front position of the sheet metal part to the rear position of the sheet metal part, and when the rope hook is located at the rope disengaging position and is wound by the winding end, the material hooking rope abuts against the end face, extending out of the table top of the workbench, of the sheet metal part in a friction mode; according to the stamping device, the sheet metal part is moved forwards and discharged in an inclined posture through the material hooking rope, the friction contact face between the table top and the surface of the sheet metal part is effectively reduced, and the stamping machining quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping processing, and in particular relates to a stamping device for sheet metal processing. Background Art

[0002] Sheet metal processing is a process widely used in the manufacturing industry, mainly used for the processing and forming of metal sheets. Sheet metal processing uses a series of mechanical processing methods, such as cutting, bending, stamping, welding, etc., to process metal sheets into sheet metal parts of different shapes and structures to meet specific design requirements.

[0003] Among them, sheet metal parts used in the aerospace field are mostly processed by stamping, using the mold on the press to apply pressure to the metal sheet to separate or plastically deform it, so as to obtain large quantities of high-precision sheet metal parts with the required shape and size, and meet the high standards required by the aerospace field. When the existing stamping machine performs stamping processing on sheet metal parts, the stamped workpiece is pushed from the stamping position on the workbench to the unloading position, so that the workpiece and the surface of the workbench are in long-distance friction contact, and even because the metal debris attached to the surface of the workpiece is further squeezed and rubbed, it is easy to scratch the surface of the workpiece, reduce the processing accuracy of the sheet metal surface, and affect the processing quality of the workpiece. Summary of the invention

[0004] The purpose of the present invention is to provide a punching device for sheet metal processing with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A punching device for sheet metal processing, comprising:

[0007] A stamping mechanism, the stamping mechanism is arranged on a workbench, and the stamping mechanism is used to stamp a plate placed on the workbench surface into a sheet metal part, wherein along the cutting direction of the sheet metal part, the edges on both sides of the lower surface of the sheet metal part extend out of the workbench surface;

[0008] A material unloading mechanism, wherein the material unloading mechanism is provided with two groups, and along the material unloading direction, the two groups of material unloading mechanisms are symmetrically arranged on both sides of the workbench, the material unloading mechanism comprises a material hook assembly and a material hook rope, one end of the material hook rope is a fixed end, and the other end of the material hook rope is a winding end, wherein the fixed end is located on one side of the workbench surface, and the winding end is located on the other side of the workbench surface, the material hook assembly comprises a rope hook and a hook rope winding assembly, and a rope hook is provided at the output end of the hook rope winding assembly, and under the drive of the hook rope winding assembly, the rope hook is used to hook the material hook rope and wind it from the front position of the sheet metal part to the rear position of the sheet metal part, and when the rope hook is in the rope-off position and is wound at the winding end, the material hook rope and the end surface of the sheet metal part extending out of the workbench surface are frictionally abutted.

[0009] As a further optimization scheme of the present invention, the fixed end of the hook rope is fixed on a limit column, the limit column is fixedly arranged on a side plate fixedly connected to the workbench, the winding end of the hook rope is wound on a winding drum, the reel of the winding drum is rotatably connected to the side plate, and a torsion spring is sleeved between the winding drum and the reel.

[0010] As a further optimization scheme of the present invention, the hook rope winding assembly includes a second shift driving member, a limit frame, a limit block, a slider and a fixed plate, the second shift driving member is mounted on the workbench, the output end of the second shift driving member is fixedly connected to the limit frame, a through groove is provided on the limit frame, the limit block is slidably connected to the limit frame through the through groove, the lower end of the limit block is fixedly connected to the slider, the fixed plate is fixedly arranged on the workbench, a slide groove is provided on the fixed plate, and the slide block is slidably connected to the fixed plate through the slide groove;

[0011] A rope hook transfer assembly is arranged above the sliding block, and the output end of the rope hook transfer assembly is connected with the rope hook. The rope hook transfer assembly is used to drive the rope hook to transfer between the initial position and the rope-off position.

[0012] As a further optimization scheme of the present invention, the rope hook transfer assembly includes a rotating drive member and a turntable. The rotating drive member is embedded in the limit block. The output end of the rotating drive member is fixedly connected to the turntable. The edge position of the turntable is fixedly provided with a rope hook.

[0013] As a further optimization solution of the present invention, the rope hook transfer assembly includes a telescopic driving member, the telescopic driving member is arranged on the limit block, and the output end of the telescopic driving member is transmission-connected to the rope hook.

[0014] As a further optimization scheme of the present invention, a shifting assembly is arranged in front of the hook rope along the material feeding direction, and the shifting assembly includes a first shifting driving member and a pushing block. The first shifting driving member is mounted on a bracket, and the bracket is fixedly arranged on the side plate. The output end of the first shifting driving member is fixedly connected to the pushing block, and the push block has an arc concave surface on the side facing the hook rope. Under the drive of the first shifting driving member, the arc concave surface of the push block rubs against the hook rope.

[0015] As a further optimization scheme of the present invention, the stamping mechanism includes a stamping drive, an upper die group and a lower die group, the lower die group is arranged on the workbench, the upper die group is arranged outside the workbench and located above the lower die group, the stamping drive is transmission connected to the upper die group, wherein the workbench includes a material guide plate and a mounting seat, along the material unloading direction, the front and rear sides of the lower die group are respectively provided with material guide plates, the two material guide plates are respectively fixed on the mounting seats, and the material supporting table surface of the lower die group is flush with the table surface of the material guide plate.

[0016] As a further optimization scheme of the present invention, the lower die set includes a lower die and a stripper plate, the lower die is fixedly arranged on a mounting seat, and the lower die is located between two guide plates, the stripper plate is sleeved on the outer side of the lower die and is slidably connected to the lower die, a sleeve is fixedly connected to the lower end of the stripper plate, the sleeve is slidably connected to a guide post, the guide post is fixedly arranged on the mounting seat, a second spring is arranged between one end of the guide post located in the sleeve and the sleeve, wherein the sliding direction of the sleeve and the guide post is consistent with the sliding direction of the stripper plate and the lower die;

[0017] The upper die group includes a limiting cylinder, an upper die, a first spring and a chip removal assembly. The output end of the stamping drive is fixedly connected to a fixed seat, and a limiting cylinder is fixedly provided at the lower end of the fixed seat. The upper die is slidably connected in the limiting cylinder. A first spring is provided between the upper die and the fixed seat. A chip removal assembly is provided on the limiting cylinder, and the chip removal assembly is transmission-connected to the upper die. The chip removal assembly is used to vibrate and remove chips from the stamping wall of the limiting cylinder and the stamping surface of the upper die after stamping.

[0018] As a further optimization scheme of the present invention, the chip removing assembly includes a U-shaped plate, a spring plate, an abutment block and a resistance switch, the upper end of the upper mold is fixedly connected to the U-shaped plate, the U-shaped plate has a side plate, the outer end of the side plate extends into the side groove opened in the limiting cylinder, the outer end of the side plate is rotatably connected to the spring plate, and a torsion spring is sleeved on the rotation connection shaft between the spring plate and the side plate. A constraint groove is opened in the limiting cylinder, the constraint groove and the spring plate are located on the same side of the side plate, and a third telescopic member is arranged in the constraint groove, the output end of the third telescopic member is fixedly connected to a connecting plate, and a connecting rod is rotatably connected to the connecting plate. The end of the connecting rod is away from the connecting plate and is rotatably connected to the abutment plate, and the abutment plate is slidably connected to the limiting cylinder through the constraint groove, and a plurality of abutment blocks are arranged on the end of the abutment plate facing the side plate, and a resistance switch is arranged at the position of the limiting cylinder facing the upper end of the upper mold, and the resistance switch is electrically connected to the third telescopic member.

[0019] As a further optimization scheme of the present invention, a material blanking box is provided in front of the workbench along the material blanking direction, and a material inlet is provided at a position of the table surface of the material blanking box adjacent to the front material guide plate.

[0020] The present invention has at least the following beneficial effects: the punching device for sheet metal processing provided by the present invention is provided with a punching mechanism and a feeding mechanism, and the metal sheet is punched into a sheet metal part through the punching processing of the punching mechanism. At this time, the edges on both sides of the lower surface of the sheet metal part extend out of the table surface of the workbench, and then the hook rope is pulled by the rope hook in the feeding mechanism from the front position of the sheet metal part to the rear position of the sheet metal part, so that the hook rope and the end surface of the sheet metal part extending out of the table surface of the workbench are frictionally abutted, so that the sheet metal part is moved forward to discharge in an inclined posture lifted from the rear, which greatly reduces the friction contact surface between the sheet metal part and the workbench, especially avoids the friction contact between the outer surface of the structural area formed by stamping and the workbench, effectively avoids the scratches on the structural surface formed by stamping caused by the friction between the sheet metal part and the table surface of the workbench during the pushing and feeding process, and ensures the processing quality of the sheet metal part;

[0021] In addition, when the stamping mechanism is stamping, after the upper and lower molds are stamped, when the upper mold moves up to withdraw the material, the intermittent contact between the spring plate and the abutment block makes the spring plate intermittently hit the groove wall of the side groove, thereby achieving the vibration of metal debris on the surface of the limit cylinder that abuts against the metal sheet during stamping, effectively avoiding the debris from being squeezed onto the surface of the sheet when the metal sheet is stamped again, causing the debris to squeeze and scratch the surface of the sheet, affecting the processing quality of the sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 The present invention Figure 1 A schematic diagram of the front structure of

[0024] Figure 3 It is a structural schematic diagram of the material unloading mechanism, the lower die set and the workbench of the present invention;

[0025] Figure 4 The present invention Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a schematic diagram of the partial structure of the front side of the material unloading mechanism of the present invention;

[0027] Figure 6 It is a partial top view structural schematic diagram of the rope hook in the material feeding mechanism of the present invention when the rope hook is in the process of hook material displacement;

[0028] Figure 7 It is a partial top view of the structure of the rope hook in the unloading mechanism of the present invention in the rope-releasing position;

[0029] Figure 8 It is a schematic diagram of multiple displacement structures of the rope hook of the present invention from the initial position to the rope-releasing position;

[0030] Fig. 9 It is a partial cross-sectional structural schematic diagram of the punching mechanism of the present invention;

[0031] Fig.10 The present invention Fig. 9 Enlarged view of point B in the middle.

[0032] In the figure: 1, stamping mechanism; 111, stamping drive member; 112, upper die set; 1121, limit cylinder; 1122, fixed seat; 1123, side groove; 113, upper die; 114, first spring; 115, U-shaped plate; 1151, side plate; 1152, spring plate; 116, contact switch; 117, third telescopic member; 1171, connecting plate; 118, connecting rod; 119, contact plate; 1191, contact block; 12, lower die set; 121, lower die; 122, stripping plate; 23, sleeve; 24, second spring; 25, guide column; 3, workbench; 31, guide Material plate; 32. Mounting seat; 4. Material unloading mechanism; 41. Shifting assembly; 411. Bracket; 412. First shifting driving member; 413. Pushing block; 414. Material hook rope; 415. Reel; 416. Side plate; 417. Limiting column; 42. Material hooking assembly; 421. Second shifting driving member; 422. Limiting frame; 4221. Through groove; 423. Fixed plate; 4231. Slide groove; 424. Mounting plate; 425. Limiting block; 426. Rope hook; 427. Turntable; 428. Sliding block; 429. Rotating driving member; 5. Material unloading box; 51. Material inlet; 6. Base. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] See also Figure 1 , Figure 2 and Figure 3 The present invention provides a punching device for sheet metal processing, comprising:

[0035] A stamping mechanism 1 is arranged on a workbench 3, and is used to stamp a plate placed on the workbench 3 into a sheet metal part. In the blanking direction of the sheet metal part, the edges of both sides of the lower surface of the sheet metal part extend out of the workbench 3, such as Figure 6 and Figure 7 The short dashed line indicates the placement position of the sheet metal part on the workbench 3;

[0036] The unloading mechanism 4 is provided with two groups. Along the unloading direction, the two groups of unloading mechanisms 4 are symmetrically arranged on both sides of the workbench 3. The unloading mechanism 4 includes a hook assembly 42 and a hook rope 414. One end of the hook rope 414 is a fixed end, and the other end of the hook rope 414 is a winding end, wherein the fixed end is located on one side of the table surface of the workbench 3, and the winding end is located on the other side of the table surface of the workbench 3. The hook assembly 42 includes a rope hook 426 and a hook rope winding assembly Part, the output end of the hook rope winding assembly is provided with a rope hook 426, under the drive of the hook rope winding assembly, the rope hook 426 is used to hook the hook material rope 414 and wind it from the front position of the sheet metal part to the rear position of the sheet metal part. During the winding and displacement process of the rope hook 426, the hook material rope 414 will not contact the sheet metal part. When the rope hook 426 is in the rope-off position and is wound at the winding end, the hook material rope 414 frictionally abuts against the end surface of the sheet metal part extending out of the table surface of the workbench 3.

[0037] In the above embodiment, after the stamping process of the sheet metal part is completed by the stamping mechanism 1, during the winding process of the hook rope 414, the sheet metal part is pushed to the outside of the workbench 3 in a rearward-lifted posture by means of the friction force between the hook rope 414 and the end face of the sheet metal part extending outside the table surface of the workbench 3, thereby completing the unloading operation of the sheet metal part. During this process, only the front end edge of the sheet metal part is in friction contact with the workbench 3, thereby reducing the friction contact surface between the sheet metal part and the workbench 3, especially avoiding friction contact between the outer surface of the structural area formed by stamping and the workbench 3, effectively avoiding scratches on the structural surface formed by stamping due to the friction between the sheet metal part and the table surface of the workbench 3 during the unloading process, thereby ensuring the processing quality of the sheet metal part.

[0038] It should be noted that when the metal sheet is stamped, the middle area of ​​the metal sheet is used as the stamping area, and the edges of the processed sheet metal will have margins left for subsequent trimming and finishing operations. Therefore, during the blanking process, only the edge of the sheet metal is in friction contact with the workbench, which does not affect the subsequent processing quality of the sheet metal.

[0039] For example, see Figure 3 and Figure 5 The fixed end of the hook rope 414 is fixed on the limit column 417, and the limit column 417 is fixedly arranged on the side plate 416 fixedly connected to the workbench 3. The winding end of the hook rope 414 is wound on the winding drum 415, and the reel of the winding drum 415 is rotatably connected to the side plate 416, and a torsion spring is sleeved between the winding drum 415 and the reel. The hook rope 414 is always in a straight state, so that when the rope hook 426 hooks the hook rope 414 and winds it to the rear position of the sheet metal, under the action of the torsion spring, the winding drum 415 is wound, so that the sheet metal is pushed to the outside of the stamping area of ​​the workbench 3 with the help of the symmetrically arranged hook rope 414.

[0040] It should be noted that, since the sheet metal is made of metal, the hook rope 414 can be made of a metal wire rope to improve the tensile strength and durability of the hook rope 414 .

[0041] For example, see Figure 3 and Figure 4 The hook rope winding assembly includes a second shift driving member 421, a limit frame 422, a limit block 425, a slider 428 and a fixed plate 423. The second shift driving member 421 is mounted on the workbench 3. The output end of the second shift driving member 421 is fixedly connected to the limit frame 422. A through groove 4221 is provided on the limit frame 422. The limit block 425 is slidably connected to the limit frame 422 through the through groove 4221. The lower end of the limit block 425 is fixedly connected to the slider 428. The fixed plate 423 is fixedly arranged on the workbench 3. A slide groove 4231 is provided on the fixed plate 423. The slider 428 is slidably connected to the fixed plate 423 through the slide groove 4231.

[0042] A rope hook transfer assembly is disposed above the slider 428, and the output end of the rope hook transfer assembly is connected to the rope hook 426. The rope hook transfer assembly is used to drive the rope hook 426 to transfer between an initial position and a rope-releasing position.

[0043] It should be noted that the second displacement driving component 421 can be a hydraulic telescopic component, an electric telescopic component, an electrical telescopic component, etc.

[0044] like Figure 5As shown, the rope hook 426 hooks the hook rope 414 at the initial position, and under the drive of the second displacement driving member 421, the limit frame 422 moves rightward, so that the slider 428 slides along the slide groove 4231, and the limit block 425 slides along the through groove 4221. Under the above double constraints, Figure 6 and Figure 7 As shown, the rope hook 426 is moved from the left side of the sheet metal part (i.e., the front position of the sheet metal part) to the right side of the sheet metal part (i.e., the rear position of the sheet metal part). At this time, the rope hook 426 is driven to rotate by the rope hook rotation assembly to release the traction constraint on the hook rope 414, so that under the action of the torsion spring, the paired hook ropes 414 can push the sheet metal part, so that the sheet metal part slides to the outside of the workbench 3 in a tilted posture lifted from the rear.

[0045] For example, see Figure 4 The rope hook transfer assembly includes a rotating drive member 429 and a rotating disk 427. The rotating drive member 429 is embedded in the limit block 425. The output end of the rotating drive member 429 is fixedly connected to the rotating disk 427. The edge of the rotating disk 427 is fixedly provided with a rope hook 426. Exemplarily, the rotating drive member 429 is a motor.

[0046] Continue reading Figure 8 In the above embodiment, after the rope hook 426 hooks the hook rope 414 from the initial position, as the slider 428 slides along the slide groove 4231, in order to enhance the pulling strength of the rope hook 426 on the hook rope 414, the rotating driving member 429 drives the rotating disk 427 to rotate continuously in the same direction along the track direction of the slide groove 4231, such as Figure 8 As shown, when the rope hook 426 is wound around the right side of the sheet metal, the rope hook 426 itself also rotates to the position indicated by the dotted line at the rightmost end, so that the hook rope 414 is separated from the rope hook 426, and the rope hook 426 is unhooked.

[0047] In other embodiments, the rope hook transfer assembly includes a telescopic drive member, the telescopic drive member is disposed on the limit block 425, and the output end of the telescopic drive member is in transmission connection with the rope hook 426. In this embodiment, the rope hook 426 does not rotate, and when the rope hook 426 is located at the initial position, the rope hook 426 can hook the hook material rope 414, and when the rope hook 426 is wound to the right position of the sheet metal, the rope hook 426 is retracted into the inner cavity of the telescopic drive member under the drive of the telescopic drive member, so that the hook material rope 414 is separated from the rope hook 426, thereby realizing the rope detachment of the rope hook 426.

[0048] For example, see Figure 3 and Figure 5 In the feeding direction, a displacement assembly 41 is arranged in front of the hook rope 414. Figure 5In the illustrated orientation, the shifting component 41 is arranged on the left side of the hook rope 414, and the shifting component 41 includes a first shifting driving component 412 and a pushing block 413. The first shifting driving component 412 is mounted on a bracket 411, and the bracket 411 is fixedly arranged on a side plate 416. The output end of the first shifting driving component 412 is fixedly connected with a pushing block 413, and the pushing block 413 has an arc concave surface on the side facing the hook rope 414. Under the drive of the first shifting driving component 412, the arc concave surface of the pushing block 413 rubs against the hook rope 414.

[0049] It should be noted that the first displacement driving component 412 can be a hydraulic telescopic component, an electric telescopic component, an electrical telescopic component, etc.

[0050] In the above embodiment, if Figure 5 As shown, when the hook rope 414 is in the initial position, the hook rope 414 is located on the left side of the rope hook 426. At this time, it is necessary to use the drive of the first shift driving component 412 to make the push block 413 push the hook rope 414 toward the rear position of the rope hook 426, so that the rope hook 426 can pull the hook rope 414, and then restore the first shift driving component 412 to the initial position to wait for the next operation.

[0051] For example, Figure 5 As shown, the driving direction of the first shift drive member 412 is tilted. In order to prevent the sheet metal from being interfered with by other components during cutting, the setting position of the first shift drive member 412 is higher than the upper end surface position of the sheet metal. Therefore, by tilting the driving direction of the first shift drive member 412, the driving displacement of the first shift drive member 412 can be reduced compared to moving the hook rope 414 toward the rear position of the rope hook 426 through the traditional horizontal driving direction.

[0052] Please continue reading Figure 1 and Figure 2 The stamping mechanism 1 includes a stamping drive 111, an upper die set 112 and a lower die set 12, wherein the lower die set 12 is arranged on the workbench 3, the upper die set 112 is arranged outside the workbench 3 and located above the lower die set 12, and the stamping drive 111 is transmission-connected to the upper die set 112, wherein Figure 2 and Figure 3 As shown, the workbench 3 includes a guide plate 31 and a mounting seat 32. In the material cutting direction, the front and rear sides of the lower die set 12 are respectively provided with guide plates 31, and the two guide plates 31 are respectively fixedly arranged on the mounting seats 32, and the mounting seats 32 are fixedly arranged on the base 6. The material supporting table of the lower die set 12 is flush with the table of the guide plate 31. Therefore, when the sheet metal parts are cut, the cutting is smooth.

[0053] It should be noted that, for example, Figure 3As shown, the fixing plate 423 is fixedly mounted on the side of the material guide plate 31 through the mounting plate 424 , the second displacement driving member 421 is mounted on the mounting seat 32 of the workbench 3 , and the mounting seat 32 is mounted on the base 6 .

[0054] For example, see Fig. 9 and Fig.10 The lower die set 12 includes a lower die 121 and a stripping plate 122. The lower die 121 is fixedly arranged on a mounting seat 32, and the lower die 121 is located between two guide plates 31. The stripping plate 122 is sleeved on the outer side of the lower die 121 and is slidably connected to the lower die 121. The lower end of the stripping plate 122 is fixedly connected with a sleeve 23, and the sleeve 23 is slidably connected with a guide post 25. The guide post 25 is fixedly arranged on the mounting seat 32. A second spring 24 is arranged between one end of the guide post 25 located in the sleeve 23 and the sleeve 23, wherein the sliding direction of the sleeve 23 and the guide post 25 is consistent with the sliding direction of the stripping plate 122 and the lower die 121.

[0055] The upper mold group 112 includes a limiting cylinder 1121, an upper mold 113, a first spring 114 and a chip removal assembly. The output end of the stamping drive 111 is fixedly connected to a fixed seat 1122, and the lower end of the fixed seat 1122 is fixedly provided with a limiting cylinder 1121. The upper mold 113 is slidably connected in the limiting cylinder 1121. A first spring 114 is provided between the upper mold 113 and the fixed seat 1122. A chip removal assembly is provided on the limiting cylinder 1121, and the chip removal assembly is transmission-connected to the upper mold 113. The chip removal assembly is used to vibrate and remove chips from the stamping wall of the limiting cylinder 1121 and the stamping surface of the upper mold 113 after stamping.

[0056] Exemplarily, the stamping drive component 111 is a hydraulic cylinder, an electric telescopic component, or the like.

[0057] For example, see Fig. 9 and Fig.10The chip removal assembly includes a U-shaped plate 115, a spring plate 1152, an abutment block 1191 and an abutment switch 116. The upper end of the upper mold 113 is fixedly connected to the U-shaped plate 115. The U-shaped plate 115 has a side plate 416. The outer end of the side plate 416 extends into the side groove 1123 provided in the limiting cylinder 1121. The outer end of the side plate 416 is rotatably connected to the spring plate 1152. A torsion spring is sleeved on the rotation connection shaft between the spring plate 1152 and the side plate 416. A constraint groove is provided in the limiting cylinder 1121. The constraint groove and the spring plate 1152 are located on the same side of the side plate 416. A third telescopic member 117 is arranged in the groove, and the output end of the third telescopic member 117 is fixedly connected to a connecting plate 1171, and a connecting rod 118 is rotatably connected to the connecting plate 1171. The end of the connecting rod 118 away from the connecting plate 1171 is rotatably connected to a contact plate 119, and the contact plate 119 is slidably connected to a limiting cylinder 1121 through a constraint groove. A plurality of contact blocks 1191 are arranged at one end of the abutment plate 119 facing the side plate 416, and a contact switch 116 is arranged at the position of the upper end of the limiting cylinder 1121 facing the upper mold 113, and the contact switch 116 is electrically connected to the third telescopic member 117.

[0058] In the above embodiment, the metal sheet is placed on the stamping position of the stripping plate 122. Under the drive of the stamping drive member 111, the metal sheet is clamped between the limiting cylinder 1121 and the stripping plate 122. Under the continued drive of the stamping drive member 111, the stripping plate 122 drives the sleeve 23 to move downward and compress the second spring 24, so that the lower mold 121 squeezes the metal sheet and further presses against the upper mold 113. The first spring 114 is compressed, and the upper mold 113 drives the U-shaped plate 115 to move upward relative to the limiting cylinder 1121. In the process of relative upward movement, the abutment block 1191 is located in the constraint groove, and the outer end of the spring plate 1152 is in frictional contact with the groove wall of the side groove 1123. When the upper mold 113 is abutted against the upper mold 113, it abuts against the abutment switch 116, so that the abutment switch 116 activates the third telescopic member 117, and the third telescopic member 117 drives the connecting plate 1171 to move downward. The connecting rod 118 drives the abutment plate 119 to move outward along the constraint groove, so that the abutment block 1191 protrudes out of the constraint groove. After the stamping is completed, the upper mold 113 slides down relative to the limiting cylinder 1121 under the elastic force of the first spring 114, so that the side plate 1151 drives the spring plate 1152 to move downward along the side groove 1123, and under the intermittent friction between the spring plate 1152 and the abutment block 1191, the spring plate 1152 intermittently hits the groove wall of the side groove 1123, so that the metal debris on the surface of the limiting cylinder 1121 that abuts against the metal sheet during stamping is vibrated away, effectively avoiding the debris from being squeezed on the surface of the sheet when the metal sheet is stamped again in the subsequent process, causing the debris to squeeze and scratch the surface of the sheet, affecting the processing quality of the sheet metal, and the stamped sheet metal, under the action of the stripping plate 122, makes the lower end face of the sheet metal be located on the upper surface of the lower mold 121.

[0059] Please continue reading Figure 1 In the material unloading direction, a blanking box 5 is provided in front of the workbench 3, and a material inlet 51 is provided at a position of the table surface of the blanking box 5 adjacent to the material guide plate 31 in front. The stamped sheet metal parts are pushed into the inlet 51 and fall into the blanking box 5. For example, a buffer pad is provided on the inner wall of the blanking box 5 to provide buffer protection for the sheet metal parts, so that the staff can take out the sheet metal parts from the blanking box 5 instead of directly taking them out from the stamping position, which has a high safety factor.

[0060] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A punching device for sheet metal processing, characterized in that: include: A punching mechanism (1), the punching mechanism (1) being arranged on a workbench (3), the punching mechanism (1) being used for punching a plate placed on the surface of the workbench (3) into a sheet metal part, wherein along the cutting direction of the sheet metal part, the edges on both sides of the lower surface of the sheet metal part extend out of the surface of the workbench (3); A material unloading mechanism (4), wherein the material unloading mechanism (4) is provided with two groups, and along the material unloading direction, the two groups of material unloading mechanisms (4) are symmetrically arranged on both sides of the workbench (3), the material unloading mechanism (4) comprises a material hooking assembly (42) and a material hooking rope (414), one end of the material hooking rope (414) is a fixed end, and the other end of the material hooking rope (414) is a winding end, wherein the fixed end is located on one side of the workbench (3) surface, and the winding end is located on the other side of the workbench (3) surface, The hook material assembly (42) comprises a rope hook (426) and a hook rope winding assembly, wherein the output end of the hook rope winding assembly is provided with a rope hook (426). When driven by the hook rope winding assembly, the rope hook (426) is used to hook the hook material rope (414) and wind it from the front position of the sheet metal part to the rear position of the sheet metal part. When the rope hook (426) is located at the rope unwinding position and is wound at the winding end, the hook material rope (414) is in frictional contact with the end surface of the sheet metal part extending outside the table surface of the workbench (3).

2. A punching device for sheet metal processing according to claim 1, characterized in that: The fixed end of the hook rope (414) is fixed on a limiting column (417), and the limiting column (417) is fixedly arranged on a side plate (416) fixedly connected to the workbench (3). The winding end of the hook rope (414) is wound on a winding drum (415), and the reel of the winding drum (415) is rotatably connected to the side plate (416), and a torsion spring is sleeved between the winding drum (415) and the reel.

3. A punching device for sheet metal processing according to claim 2, characterized in that: The hook rope winding assembly comprises a second shift driving member (421), a limit frame (422), a limit block (425), a sliding block (428) and a fixed plate (423); the second shift driving member (421) is mounted on the workbench (3); the output end of the second shift driving member (421) is fixedly connected to the limit frame (422); a through groove (4221) is provided on the limit frame (422); the limit block (425) is slidably connected to the limit frame (422) through the through groove (4221); the lower end of the limit block (425) is fixedly connected to the sliding block (428); the fixed plate (423) is fixedly arranged on the workbench (3); a sliding groove (4231) is provided on the fixed plate (423); the sliding block (428) is slidably connected to the fixed plate (423) through the sliding groove (4231); A rope hook transfer assembly is arranged above the slider (428), the output end of the rope hook transfer assembly is connected to the rope hook (426), and the rope hook transfer assembly is used to drive the rope hook (426) to transfer between an initial position and a rope-off position.

4. A punching device for sheet metal processing according to claim 3, characterized in that: The rope hook transfer assembly comprises a rotating drive member (429) and a rotating disk (427); the rotating drive member (429) is embedded in the limiting block (425); the output end of the rotating drive member (429) is fixedly connected to the rotating disk (427); and the rope hook (426) is fixedly arranged at the edge of the rotating disk (427).

5. A punching device for sheet metal processing according to claim 3, characterized in that: The rope hook transfer assembly comprises a telescopic driving member, the telescopic driving member is arranged on a limit block (425), and the output end of the telescopic driving member is transmission-connected to the rope hook (426).

6. A punching device for sheet metal processing according to claim 5, characterized in that: A shift assembly (41) is provided in front of the hook rope (414) in the material feeding direction. The shift assembly (41) comprises a first shift driving member (412) and a push block (413). The first shift driving member (412) is mounted on a bracket (411). The bracket (411) is fixedly arranged on a side plate (416). The output end of the first shift driving member (412) is fixedly connected with the push block (413). The push block (413) has an arc concave surface on the side facing the hook rope (414). When driven by the first shift driving member (412), the arc concave surface of the push block (413) rubs against the hook rope (414).

7. A punching device for sheet metal processing according to claim 6, characterized in that: The punching mechanism (1) comprises a punching drive member (111), an upper die group (112) and a lower die group (12); the lower die group (12) is arranged on a workbench (3); the upper die group (112) is arranged outside the workbench (3) and located above the lower die group (12); the punching drive member (111) is transmission-connected to the upper die group (112); the workbench (3) comprises a material guide plate (31) and a mounting seat (32); in a material discharge direction, the front and rear sides of the lower die group (12) are respectively provided with material guide plates (31); the two material guide plates (31) are respectively fixedly arranged on the mounting seat (32); the material support table surface of the lower die group (12) is flush with the table surface of the material guide plate (31).

8. A punching device for sheet metal processing according to claim 7, characterized in that: The lower mold assembly (12) comprises a lower mold (121) and a stripping plate (122); the lower mold (121) is fixedly arranged on a mounting seat (32), and the lower mold (121) is located between two guide plates (31); the stripping plate (122) is sleeved on the outer side of the lower mold (121) and is slidably connected to the lower mold (121); a sleeve (23) is fixedly connected to the lower end of the stripping plate (122); the sleeve (23) is slidably connected to a guide column (25); the guide column (25) is fixedly arranged on the mounting seat (32); a second spring (24) is arranged between one end of the guide column (25) located in the sleeve (23) and the sleeve (23); wherein the sliding direction of the sleeve (23) and the guide column (25) is consistent with the sliding direction of the stripping plate (122) and the lower mold (121); The upper die assembly (112) comprises a limiting cylinder (1121), an upper die (113), a first spring (114) and a chip removal assembly. The output end of the stamping drive member (111) is fixedly connected to a fixed seat (1122). The lower end of the fixed seat (1122) is fixedly provided with a limiting cylinder (1121). The upper die (113) is slidably connected in the limiting cylinder (1121). A first spring (114) is provided between the upper die (113) and the fixed seat (1122). A chip removal assembly is provided on the limiting cylinder (1121) and is transmission-connected to the upper die (113). The chip removal assembly is used for vibrating and removing chips from the stamping wall of the limiting cylinder (1121) and the stamping surface of the upper die (113) after stamping.

9. A punching device for sheet metal processing according to claim 8, characterized in that: The chip removal assembly comprises a U-shaped plate (115), a spring plate (1152), an abutment block (1191) and an abutment switch (116); the upper end of the upper mold (113) is fixedly connected to the U-shaped plate (115); the U-shaped plate (115) has a side plate (416); the outer end of the side plate (416) extends into a side groove (1123) provided in a limiting cylinder (1121); the outer end of the side plate (416) is rotatably connected to the spring plate (1152); a torsion spring is sleeved on a rotation connection shaft between the spring plate (1152) and the side plate (416); a constraint groove is provided in the limiting cylinder (1121); the constraint groove and the spring plate (1152) are located on the same side of the side plate (416); the constraint groove A third telescopic member (117) is arranged inside, the output end of the third telescopic member (117) is fixedly connected to a connecting plate (1171), a connecting rod (118) is rotatably connected to the connecting plate (1171), one end of the connecting rod (118) away from the connecting plate (1171) is rotatably connected to an abutment plate (119), the abutment plate (119) is slidably connected to a limiting cylinder (1121) through a constraint groove, a plurality of abutment blocks (1191) are arranged at one end of the abutment plate (119) facing the side plate (416), a contact switch (116) is arranged at a position of the upper end of the limiting cylinder (1121) facing the upper mold (113), and the contact switch (116) is electrically connected to the third telescopic member (117).

10. A punching device for sheet metal processing according to claim 9, characterized in that: Along the material discharge direction, a material discharge box (5) is arranged in front of the workbench (3), and a material inlet (51) is arranged at a position of the table surface of the material discharge box (5) adjacent to the material guide plate (31) in front.

Images