A stamping material supporting device of a stamping die

Abstract

The application discloses a stamping part supporting device of a stamping die, and belongs to the technical field of stamping dies, which comprises a die base, a groove is formed in the inside of the die base, a supporting seat is slidably connected in the groove, a plurality of buffer springs are arranged at the bottom of the supporting seat, a clamping assembly is arranged in the inside of the supporting seat, and a cleaning assembly is arranged in the supporting seat; the two groups of expanded clamping assemblies are tightly pressed onto the two-side local sides of a workpiece plate to clamp the workpiece plate, manual clamping operation is omitted, clamping of the two-side edges of the workpiece plate is avoided, the problems that the two-side edges are easily extruded to form extrusion marks and the workpiece plate is easily deformed are solved, the end of the workpiece plate is adsorbed and adhered by the expanded clamping assembly, the workpiece plate is automatically separated from the inner side wall of the bottom end of the supporting seat, the workpiece plate is separated and discharged, and the inclined workpiece plate can be taken out, so that the convenience of taking the workpiece plate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping die, in particular to a stamping die stamping part material supporting device. BACKGROUND

[0002] As the core process equipment for realizing efficient and precise forming of metal plates in modern manufacturing, stamping die uses the die installed on the press to apply pressure to the material to make it separate or plastically deform, thereby obtaining the required parts. In the stamping production process, the material supporting device is an indispensable part of the die system, mainly responsible for supporting and buffering the plate-shaped blank before processing to ensure the smooth progress of stamping.

[0003] As disclosed in Chinese Patent No. CN221695060U, a stamping die stamping part material supporting device is disclosed, which comprises a bottom plate, a buffer seat is installed at the top end of the bottom plate, a buffer plate is connected to the inner side of the buffer seat, a guide structure is installed on one side of the buffer plate, a lower pressing block is installed at the bottom of the buffer plate, a connecting block is connected to the bottom of the lower pressing block, and a first damper is installed at one end of the connecting block; the combination of the damper and the first spring can improve the buffering effect of the entire device during use, prevent the stamping head from being damaged due to excessive force during stamping when it contacts the stamping part, and when the buffer plate moves longitudinally, it will drive the lower pressing block to push the connecting block horizontally, and the first damper connected on one side will be extruded, at the same time, the second damper and the first spring will be deformed when the buffer plate is pressed down, and the reverse force generated by the deformation of the three can improve the buffering capacity of the entire material supporting seat.

[0004] As disclosed in Chinese Patent No. CN212238992U, a stamping die stamping part material supporting device is disclosed, which comprises a supporting table and a lower stamping part, the lower stamping part is arranged above a material supporting plate, the lower end of the material supporting plate is provided with a plurality of guide assemblies, the guide assembly comprises a guide cylinder, a guide rod and a guide spring, the guide rod is movably inserted into the guide cylinder, and the guide spring is wound around the guide rod; in the present application, the material supporting plate is added to support the lower stamping part, and guide assemblies are additionally arranged below the material supporting plate, so that after the stamping part is completed, the guide assemblies will play a buffering role under the action of the stamping force, thereby reducing the stamping force and protecting the equipment.

[0005] As Chinese patent publication No. CN215090281U discloses a stamping part supporting device of a stamping die, the stamping part supporting device of the stamping die comprises a base, a fixing assembly is arranged on the top of the base, the fixing assembly comprises a vertical rod, a disc, a first connecting rod, a second connecting rod, a third connecting rod, a first clamping plate, a threaded rod and a second clamping plate, the vertical rod is arranged on the top of the base, the disc is fixedly connected to the bottom end of the vertical rod, and the first connecting rod is arranged on both sides of the disc. The stamping part supporting device of the stamping die can drive the second connecting rod to move upward when the tray body moves downward, the second connecting rod can drive the third connecting rod to move upward, one end of the third connecting rod can be lifted upward, one end can be lowered, and the second clamping plate can clamp and fix the stamping part, which is beneficial to clamp and fix the stamping part, prevent the stamping part from shaking in the tray during stamping, and damage the stamping part.

[0006] When the above-mentioned multiple applications and part of the stamping part supporting device in the prior art are used, the side edges of the plate are often clamped by extrusion, which is easy to cause extrusion wear on the two side edges and cause a certain bending deformation of the workpiece plate, affecting the quality of the finished product. At the same time, the surface of the workpiece plate lacks effective cleaning before stamping, and dust or impurities may be attached to the surface of the workpiece plate. These foreign matters are easy to be pressed into the surface of the workpiece under high pressure, forming defects and affecting product yield. Further, after stamping is completed, the workpiece plate and the supporting plane are easy to be adhered due to the stamping force, affecting the workpiece taking efficiency.

[0007] Therefore, it is necessary to provide a stamping part supporting device of a stamping die to solve the above technical problems. SUMMARY

[0008] The purpose of the present application is to provide a stamping part supporting device of a stamping die to solve the problems raised in the above background.

[0009] To achieve the above-mentioned purpose, the scheme for solving the above-mentioned technical problems is as follows: a stamping part supporting device of a stamping die, comprising a die base, a recess is formed in the inside of the die base, a supporting seat is slidably connected in the recess, a plurality of buffer springs are arranged on the bottom of the supporting seat, a clamping assembly is arranged in the inside of the supporting seat, the workpiece plate is automatically clamped by the clamping assembly during the downward movement of the supporting seat, and the workpiece plate is assisted to be stripped by the clamping assembly when the supporting seat is reset upward, and a cleaning assembly is arranged in the supporting seat to clean the stamping surface of the workpiece plate before stamping.

[0010] As a further scheme of the present application, the clamping assembly is provided with two groups and the two groups of clamping assemblies are symmetrically distributed, the clamping assembly comprises a convex plate fixed to the inner side of the supporting seat, a rubber block is fixedly attached to the side surface of the convex plate, an inner cavity a is formed in the inside of the rubber block, and a liquid delivery hose is communicated with the inner cavity a.

[0011] As a further scheme of the present application, the inner part of the mold base is provided with an inner groove a, the end of the infusion hose away from the rubber block is arranged in communication with the inner groove a, the bottom end of the material supporting seat is fixed with a connecting rod inserted into the inner groove a, and the bottom end of the connecting rod is fixed with a piston a tightly matched with the side wall of the inner groove a.

[0012] As a further scheme of the present application, the bottom surface of the rubber block is provided with a plurality of adsorption grooves distributed at equal intervals.

[0013] As a further scheme of the present application, the sizes of the adsorption grooves at the bottom end of the single rubber block are the same, and the sizes of the adsorption grooves at the bottom end of the two rubber blocks are different.

[0014] As a further scheme of the present application, the inner side wall of the material supporting seat is fixed with a blocking column, and the blocking column is located at the side of the rubber block with a larger adsorption groove at the bottom end.

[0015] As a further scheme of the present application, the two sides of the inner cavity a are fixed with hard boards.

[0016] As a further scheme of the present application, the cleaning assembly comprises a blowing seat embedded in the side wall of the material supporting seat, the inner part of the blowing seat is provided with an inner cavity b, the side of the blowing seat facing the center of the material supporting seat is provided with a plurality of blowing holes in communication with the inner cavity b, the blowing holes are distributed at equal intervals, and the inner cavity b is communicated with a gas conveying pipe.

[0017] As a further scheme of the present application, the inner part of the mold base is provided with an inner groove b in communication with the inner groove a, the end of the gas conveying pipe away from the inner cavity b is arranged in communication with the inner groove b, the side wall of the inner groove b is tightly matched with a piston b, the inner part of the inner groove b is provided with a return spring, and the return spring is located at the side of the piston b away from the inner groove a.

[0018] As a further scheme of the present application, the blowing holes are arranged in an inclined downward manner.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. In the process of moving down the material support, the clamping subassembly is triggered by the material support to elastically expand, so that the workpiece plate is clamped on both sides of the local side surface by the two sets of expanded clamping subassemblies, thereby realizing stable clamping of the workpiece plate, eliminating manual clamping operation, reducing interruption and intervention, effectively improving overall processing efficiency, and avoiding clamping the two sides of the workpiece plate, which can easily cause extrusion marks on the two sides and cause certain bending deformation of the workpiece plate. Further, the flexible contact characteristics of the elastic expansion of the clamping subassembly can adapt to the non-planar edge of the workpiece plate, overcoming the limitation of traditional rigid clamps that are only suitable for standard planes;

[0021] 2. After the workpiece plate is punched, the upper die moves up, releasing the pressure on the material support, so that the material support automatically moves up and resets under the pushing action of the buffer spring. In this process, the clamping subassembly automatically releases the expansion clamping, and the end of the workpiece plate is adsorbed and adhered by the expanded clamping subassembly, so that the workpiece plate is automatically separated from the inner side wall of the bottom end of the material support, realizing auxiliary separation of the workpiece plate. This greatly reduces the difficulty of the operator to take the material, and makes one end of the workpiece plate stand up, so that the worker does not need to put his hand into a small space or find a force point, but can directly take the workpiece from the standing side, which is convenient for the worker to take out the workpiece, effectively improving the convenience of taking the material;

[0022] 3. The cleaning assembly is triggered to work by the downward movement of the material support, so that the cleaning assembly automatically blows the airflow with a certain air pressure onto the surface of the workpiece plate before processing, and blows off the dust and impurities on the middle processing area of the workpiece plate, so that the workpiece plate is cleaned before punching, avoiding punching defects caused by foreign matter residues. By using the movement of the material support to trigger the cleaning assembly for impurity removal and cleaning, manual intervention is not required, the cleaning efficiency is significantly improved, the overall linkage is effective, the overall structure is simplified, and the problem of pollution caused by human cleaning negligence or secondary contact is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in conjunction with the drawings and examples:

[0024] Figure 1 The overall structure of the present application is shown in the figure Figure 1 ;

[0025] Figure 2 The overall structure of the present application is shown in the figure Figure 2 ;

[0026] Figure 3 The overall structure of the present application is shown in the figure Figure 3 ;

[0027] Figure 4 The overall structure of the present application is shown in the figureFigure 1 ;

[0028] Figure 5 For Figure 4 structure enlarged view of A in the middle;

[0029] Figure 6 For the partial structure of the invention of the clamp assembly schematic Figure 1 ;

[0030] Figure 7 For the partial structure of the invention of the cleaning assembly schematic;

[0031] Figure 8 For the overall structure of the invention of the cross section schematic Figure 2 ;

[0032] Figure 9 For Figure 8 structure enlarged view of B in the middle;

[0033] Figure 10 For Figure 8 structure enlarged view of C in the middle;

[0034] Figure 11 For the partial structure of the invention of the clamp assembly schematic Figure 2 ;

[0035] Figure 12 For the structure of the invention of the blowing hole schematic.

[0036] In the drawings, the components represented by each reference numeral are listed as follows:

[0037] 1, clamp assembly; 101, piston a; 102, inner groove a; 103, connecting rod; 104, infusion hose; 105, tab; 106, rubber block; 107, inner cavity a; 108, adsorption groove; 109, blocking column; 110, hard plate; 2, cleaning assembly; 201, inner groove b; 202, piston b; 203, return spring; 204, gas pipe; 205, blowing seat; 206, inner cavity b; 207, blowing hole; 3, material supporting seat; 4, mold base; 5, groove; 6, buffer spring; 7, flange; 8, forming cavity. DETAILED DESCRIPTION

[0038] The invention will be further described below in conjunction with examples.

[0039] Please refer to Figures 1-12The present application provides a kind of stamping die of stamping part material supporting device, including mould base 4, recess 5 is set in the inside of mould base 4, material supporting seat 3 is slidably connected in recess 5, the bottom of material supporting seat 3 is provided with multiple buffer springs 6, the inside of material supporting seat 3 is provided with clamping subassembly 1, in the movement of material supporting seat 3 lower, workpiece plate is automatically face clamped by clamping subassembly 1, and when material supporting seat 3 is reset, workpiece plate is assisted by clamping subassembly 1 Material supporting seat 3 is provided with cleaning assembly 2 that workpiece plate is cleaned first before being stamped, and the bottom end inner wall of material supporting seat 3 is provided with forming cavity 8 that is not completely shown in the attached drawings of specification that is stamped with the stamping head of stamping upper die and is stamped with the stamping head of stamping upper die;When using, workpiece plate is placed to the inside of material supporting seat 3, workpiece plate is supported by material supporting seat 3, and stamping upper die is started to move downwards, stamping upper die moves downwards under the driving of press, the specific structure and relevant working principle of stamping upper die and press are fully disclosed in prior art, and the present application will not be described again, workpiece plate is contacted by the stamping head of stamping upper die located above mould base 4, high pressure is applied on metal plate by stamping head, stamping head can be extended into forming cavity 8, so that workpiece plate is locally stamped and deformed by stamping head and forming cavity 8 cooperation, so that workpiece plate is processed into the local structure of specific shape, in the process, multiple buffer springs 6 are set to have certain buffering effect, avoid the problem that equipment is damaged under the action of stamping force;

[0040] In the process of moving down the material support 3, the clamping subassembly 1 is triggered by the material support 3 to elastically expand, so that the workpiece plate is stably clamped by tightly pressing the two groups of expanded clamping subassemblies 1 to the local sides of the two sides of the workpiece plate, thereby eliminating the manual clamping operation, reducing interruptions, effectively improving overall processing efficiency, and avoiding clamping the two sides of the workpiece plate, which can easily cause extrusion marks on the two sides and cause the workpiece plate to be bent and deformed. Further, the flexible contact characteristics of the elastic expansion clamping of the clamping subassembly 1 can adapt to the non-planar edge of the workpiece plate, overcoming the limitations of traditional rigid clamps that are only suitable for standard flat surfaces. After the workpiece plate is punched and processed, the upper punch moves up and releases the pressure on the material support 3, so that the material support 3 automatically moves up and resets under the pushing action of the buffer spring 6. In this process, the clamping subassembly 1 automatically releases the expansion clamping, and the end of the workpiece plate is adsorbed and adhered by the expanded clamping subassembly 1, so that the workpiece plate is automatically separated from the inner side wall of the bottom end of the material support 3, achieving auxiliary separation of the workpiece plate. This greatly reduces the difficulty of the operator to take the material, and makes one end of the workpiece plate stand up, so that the worker does not need to put his hand into a narrow space or find a force point, but can directly take the workpiece from the standing side, which is convenient for the worker to take out the workpiece, effectively improving the convenience of taking the material. When the workpiece plate is punched and deformed, the material support 3 moves down in the process, and the cleaning assembly 2 is triggered to work by the downward movement of the material support 3, so that the cleaning assembly 2 automatically blows the airflow with a certain pressure onto the surface of the workpiece plate before processing, and blows off the dust and impurities on the middle processing area of the workpiece plate, so that the workpiece plate is cleaned before punching, avoiding punching defects caused by foreign matter residues. By using the movement of the material support 3 to trigger the cleaning assembly 2 to remove impurities, manual intervention is not required, the cleaning efficiency is significantly improved, the overall linkage is effective, the overall structure is simplified, and the problem of pollution caused by human cleaning negligence or secondary contact is avoided.

[0041] Further as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, it is worth noting that the clamping assembly 1 is provided with two groups and the two groups of clamping assemblies 1 are symmetrically distributed, the clamping assembly 1 includes a lug plate 105 fixed on the inner side of the material supporting seat 3, the lug plate 105 is fixed with a rubber block 106 on the side surface, the rubber block 106 is internally provided with an inner cavity a 107, and the inner cavity a 107 is communicated with the infusion tube 104; a certain amount of liquid is delivered to the inside of the rubber block 106 through the infusion tube 104, so that the rubber block 106 is elastically expanded, and the two expanded rubber blocks 106 are tightly pressed on the two sides of the local side surface of the workpiece plate, so that the workpiece plate is stably clamped, avoiding clamping the two sides of the workpiece plate, which can easily cause extrusion marks on the two sides and cause certain bending deformation of the workpiece plate. At the same time, the elastic expansion clamping of the rubber block 106 can adapt to the flexible contact characteristics of the non-planar edge of the workpiece plate, overcoming the limitation of the traditional rigid clamp which is only suitable for standard plane.

[0042] Further as shown in Figure 4 and Figure 8 , it is worth noting that the inside of the mold base 4 is provided with an inner groove a 102, one end of the infusion tube 104 away from the rubber block 106 is communicated with the inner groove a 102, and the bottom end of the material supporting seat 3 is fixed with a connecting rod 103 inserted into the inner groove a 102, and the bottom end of the connecting rod 103 is fixed with a piston a 101 tightly matched with the side wall of the inner groove a 102; the inner groove a 102 is filled with a certain amount of liquid, which can be water or hydraulic oil, etc. During the downward movement of the material supporting seat 3, the material supporting seat 3 drives the piston a 101 to move downward in the inner groove a 102 through the connecting rod 103, so that part of the liquid in the inner groove a 102 is synchronously pressed into the two infusion tubes 104 through the piston a 101, so that the liquid is delivered to the inside of the rubber block 106 through the infusion tube 104, so that the workpiece plate is automatically clamped and fixed before stamping processing, and the manual clamping operation is omitted, the interruption is reduced, and the overall processing efficiency is effectively improved.

[0043] Further as shown in Figure 5 and Figure 11As shown, it is worth noting that the bottom surface of the rubber block 106 is provided with a plurality of adsorption grooves 108 distributed equidistantly; when the expanded rubber block 106 clamps the workpiece plate, the plurality of adsorption grooves 108 on the bottom surface of the rubber block 106 generate negative pressure adsorption inside, thereby temporarily adsorbing the workpiece plate; after the stamping of the workpiece plate is completed, the upper die moves up, releasing the pressure on the material supporting seat 3, so that the material supporting seat 3 is automatically moved up and reset under the pushing action of the buffer spring 6; in this process, the piston a101 moves up in the inner groove a102, so that the liquid in the rubber block 106 flows back into the inner groove a102; when the rubber block 106 recovers from the expanded state, the clamping of the workpiece plate is released, and the recovered rubber block 106 adsorbs and sticks the end of the workpiece plate through the negative pressure adsorption in the adsorption grooves 108 on the bottom, so that the workpiece plate is automatically separated from the inner side wall of the bottom end of the material supporting seat 3, achieving the auxiliary separation of the workpiece plate, greatly reducing the difficulty of the operator in taking the material.

[0044] Further as shown in Figure 1 and Figure 6 , it is worth noting that the plurality of adsorption grooves 108 at the bottom end of the single rubber block 106 are the same size, the adsorption grooves 108 at the bottom end of the two rubber blocks 106 are different in size, the inner side wall of the material supporting seat 3 is fixed with a blocking column 109, and the blocking column 109 is located at one side of the rubber block 106 with a larger adsorption groove 108 at the bottom end; when the recovered rubber block 106 adsorbs and lifts the workpiece plate, one end of the workpiece plate is in contact with the blocking column 109, thereby being pushed in the opposite direction by the blocking column 109, so that one end of the workpiece plate is released from the adsorption of one of the rubber blocks 106, and the other end of the workpiece plate is still adsorbed by the other rubber block 106, thereby making one end of the workpiece plate in the material supporting seat 3 be lifted, so that the workpiece plate is placed obliquely, and the worker can directly take the workpiece from the lifted side without stretching his hand into a narrow space or searching for a force point, which facilitates the worker to take out the workpiece, effectively improving the convenience of taking the material; when the workpiece plate is placed obliquely, one end of the workpiece plate has relatively small adsorption force with the rubber block 106, further improving the convenience of taking the material.

[0045] Further as shown in Figure 6 , Figure 7 and Figure 10As shown, it is worth noting that the cleaning assembly 2 comprises a blowing seat 205 embedded in the side wall of the material supporting seat 3, the inside of the blowing seat 205 is provided with an inner cavity b206, the side of the blowing seat 205 facing the center of the material supporting seat 3 is provided with a plurality of blowing holes 207 in communication with the inner cavity b206, the blowing holes 207 are equidistantly distributed, and the inner cavity b206 is communicated with the gas conveying pipe 204; during the stamping deformation processing of the workpiece plate, the gas flow with a certain pressure is conveyed to the inside of the blowing seat 205 through the gas conveying pipe 204, and the gas flow with a certain pressure is uniformly blown out to the surface of the workpiece plate before processing through the plurality of blowing holes 207, the dust and impurities on the middle processing area of the workpiece plate are blown off and cleaned through the gas flow, so that the stamping processing is carried out after the clean plate surface, and the stamping defects caused by foreign matter residues are avoided.

[0046] Further as shown in Figure 8 and Figure 9 As shown, it is worth noting that the inside of the mold base 4 is provided with an inner groove b201 in communication with the inner groove a102, one end of the gas conveying pipe 204 away from the inner cavity b206 is communicated with the inner groove b201, the side wall of the inner groove b201 is tightly fitted with a piston b202, the inner groove b201 is provided with a return spring 203 inside, and the return spring 203 is located on the side of the piston b202 away from the inner groove a102; during the stamping deformation processing of the workpiece plate, in the process of the material supporting seat 3 moving downward, the piston a101 pushes part of the liquid in the inner groove a102 into the inner groove b201, so as to drive the piston b202 to move in the inner groove b201, the gas in the inner groove b201 is pressed into the inside of the blowing seat 205 through the gas conveying pipe 204 by the piston b202, so that before the workpiece plate is processed, the gas flow is automatically blown out to the surface of the workpiece plate, and the stamping processing is carried out after the clean plate surface, the blowing cleaning is triggered by the movement of the material supporting seat 3, without manual intervention, the cleaning efficiency is significantly improved, the overall linkage effectively simplifies the overall structure, and the problem of pollution caused by human cleaning negligence or secondary contact is avoided, and the piston b202 is reset by the return spring 203.

[0047] The scheme has the following working process: the workpiece plate is placed in the inside of the material supporting seat 3, the workpiece plate is supported by the material supporting seat 3, the stamping upper die is started to move downward, the stamping upper die moves downward under the driving of the press, the stamping head of the stamping upper die above the die base 4 contacts the workpiece plate, high pressure is applied on the metal plate through the stamping head, the stamping head can extend into the forming cavity 8, so that the workpiece plate is locally stamped and deformed by the cooperation of the stamping head and the forming cavity 8; during the downward movement of the material supporting seat 3, the piston a 101 in the inner groove a 102 is driven by the connecting rod 103 to move downward, so that part of the liquid in the inner groove a 102 is pressed into the two liquid delivery hoses 104 synchronously by the piston a 101, a certain amount of liquid is delivered into the rubber block 106 through the liquid delivery hose 104, the rubber block 106 is elastically expanded, the two expanded rubber blocks 106 are tightly pressed on the two sides of the workpiece plate, so that the workpiece plate is clamped, and part of the liquid in the inner groove a 102 is pressed into the inner groove b 201, so as to drive the piston b 202 to move in the inner groove b 201, the gas in the inner groove b 201 is pressed into the air blowing seat 205 through the gas delivery pipe 204 by the piston b 202, and the gas flow with a certain pressure is uniformly blown out to the surface of the workpiece plate before processing through the plurality of air blowing holes 207, and the dust and impurities on the middle processing area of the workpiece plate are blown away by the gas flow; after the stamping of the workpiece plate is completed, the stamping upper die moves upward, so that the material supporting seat 3 is automatically moved upward and reset under the pushing action of the buffer spring 6, in this process, the piston a 101 moves upward in the inner groove a 102, so that the liquid in the rubber block 106 flows back to the inner groove a 102, when the rubber block 106 recovers from the expanded state, the clamping of the workpiece plate is released, and the recovered rubber block 106 adsorbs and sticks the end of the workpiece plate through the negative pressure adsorption in the adsorption groove 108 at the bottom of the rubber block 106, so that the workpiece plate is automatically released from the adhesion with the inner side wall of the bottom end of the material supporting seat 3, the workpiece plate is separated and separated, one end of the workpiece plate is in contact with the stop column 109, so that the one end of the workpiece plate is released from the adsorption of one of the rubber blocks 106 through the reverse pushing of the stop column 109, and the other end of the workpiece plate is still adsorbed by the other rubber block 106, so that the workpiece plate is inclined and placed, which is convenient for workers to take out.

[0048] Further as Figure 5 illustrated, it is worth noting that the two sides of the inner cavity a 107 are fixed with hard boards 110; during operation, the two hard boards 110 effectively limit and constrain the lateral deformation of the two sides of the rubber block 106, so that the deformation of the rubber block 106 is mainly concentrated on the bottom end of the rubber block 106, the sufficiency and stability of the contact and clamping of the rubber block 106 to the workpiece plate are improved, and the rubber block 106 more fully adsorbs the workpiece surface.

[0049] Further asFigure 12 As shown, it is worth noting that the blowing hole 207 is arranged obliquely downward; in particular, during operation, the obliquely arranged blowing hole 207 allows the airflow to have a large sweeping area on the workpiece plate, thereby increasing the sweeping area, reducing the sweeping blind area, and improving the cleaning effect.

[0050] Further as shown in Figure 1 , Figure 2 and Figure 3 , it is worth noting that one end of the material supporting seat 3 is provided with an opening, and a flange 7 is arranged at the opening end of the material supporting seat 3; the opening facilitates the placement of the workpiece plate into the material supporting seat 3 or the removal of the workpiece plate from the material supporting seat 3; when the workpiece plate is placed into the material supporting seat 3, one end of the workpiece plate is abutted against the flange 7 or the inner side of the material supporting seat 3, thereby assisting in the positioning of the workpiece plate.

[0051] In summary: the two groups of expanded clamping subassemblies 1 are tightly pressed onto the two sides of the workpiece plate, thereby achieving stable clamping of the workpiece plate, eliminating manual clamping operations, reducing interruptions, effectively improving overall processing efficiency, and avoiding clamping of the two side edges of the workpiece plate, which can easily cause extrusion marks on the two side edges and cause certain bending deformation of the workpiece plate; further, the flexible contact characteristics of the elastic expansion clamping of the clamping subassembly 1 can adapt to the non-planar edge of the workpiece plate, overcoming the limitation of traditional rigid clamps which are only suitable for standard planes; after the stamping of the workpiece plate is completed, the upper die moves up, releasing the pressure on the material supporting seat 3, so that the material supporting seat 3 automatically moves up and resets under the pushing action of the buffer spring 6; in this process, the clamping subassembly 1 automatically releases the expansion clamping, the end of the workpiece plate is adsorbed and stuck by the clamping subassembly 1 that releases the expansion, the workpiece plate automatically releases the adhesion with the inner side wall of the bottom end of the material supporting seat 3, achieving auxiliary separation of the workpiece plate, greatly reducing the difficulty of the operator to take the material, and making one end of the workpiece plate be raised, so that the worker can directly take the workpiece from the raised side without needing to stretch his hand into a small space or search for a force point, which facilitates the worker to take out the workpiece, effectively improving the convenience of taking the material; during the stamping deformation processing of the workpiece plate, the material supporting seat 3 moves down, triggering the cleaning assembly 2 to work through the downward movement of the material supporting seat 3, so that the cleaning assembly 2 automatically blows the airflow with a certain pressure onto the surface of the workpiece plate before processing, thereby blowing off and cleaning the dust and impurities on the middle processing area of the workpiece plate, so as to avoid the stamping defects caused by the residual foreign matter, and effectively improve the cleaning efficiency.

Claims

1. A blank holder device for a stamping die, comprising a die base (4), characterized in that, The inside of the mold base (4) is provided with a groove (5), the groove (5) is slidably connected with a material supporting seat (3), the bottom of the material supporting seat (3) is provided with a plurality of buffer springs (6), the inside of the material supporting seat (3) is provided with a clamping assembly (1), in the downward movement of the material supporting seat (3), the workpiece plate is automatically face clamped by the clamping assembly (1), and when the material supporting seat (3) is reset, the workpiece plate is assisted to be demoulded by the clamping assembly (1), the material supporting seat (3) is provided with a cleaning assembly (2) which cleans the stamping surface of the workpiece plate before stamping; The clamping assembly (1) is provided with two groups, and the two groups of clamping assemblies (1) are symmetrically distributed, the clamping assembly (1) comprises: A convex plate (105) is fixed in the inside of the material supporting seat (3); A rubber block (106) is fixed at the bottom end of the convex plate (105); An inner cavity a (107) is formed in the inside of the rubber block (106); A transfusion hose (104) is in communication with the inner cavity a (107); The clamping assembly (1) further comprises: An inner groove a (102) is formed in the inside of the mold base (4), and the other end of the transfusion hose (104) is in communication with the inner groove a (102); A connecting rod (103) is fixed at the bottom end of the material supporting seat (3), and the connecting rod (103) is inserted into the inner groove a (102); A piston a (101) is fixed at the bottom end of the connecting rod (103), and the piston a (101) is tightly matched with the side wall of the inner groove a (102); The clamping assembly (1) further comprises: A plurality of adsorption grooves (108) are arranged on the bottom surface of the rubber block (106); The adsorption grooves (108) at the bottom ends of the two rubber blocks (106) are arranged to be different in size; The clamping assembly (1) further comprises: A blocking column (109) is fixed on the inner side wall of the material supporting seat (3), and the blocking column (109) is located at one side of one of the rubber blocks (106).

2. The blank holder device of a press die according to claim 1, wherein The clamping assembly (1) further comprises: Two hard plates (110) are fixedly attached to the two sides of the inner cavity a (107).

3. The blank holder device of a press tool according to claim 2, characterized in that The cleaning assembly (2) comprises: A blowing seat (205) is embedded in the side wall of the material supporting seat (3); An inner cavity b (206) is formed in the inside of the blowing seat (205); A plurality of blowing holes (207) are formed on the side surface of the blowing seat (205); A gas conveying pipe (204) is in communication with the inner cavity b (206).

4. The blank holder device of a press die according to claim 3, wherein The cleaning assembly (2) further comprises: An inner groove b (201) is formed in the inside of the mold base (4) and is in communication with the inner groove a (102), and one end of the gas conveying pipe (204) away from the inner cavity b (206) is in communication with the inner groove b (201); A piston b (202) is tightly matched with the side wall of the inner groove b (201); A reset spring (203) is arranged in the inner groove b (201).

5. The blank holder device of a press die according to claim 3, wherein The blowing holes (207) are arranged to be inclined downward.

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