Sheet metal stamping die capable of preventing waste materials from jumping

Abstract

The utility model discloses an anti-jumping waste sheet metal stamping die which comprises an upper die plate, an upper die base, a lower die plate, a lower die base, a punch arranged on the upper die base and a punched hole formed in the lower die base, a discharging cavity is formed in the bottom in the lower die base, and a shielding structure used for automatically blocking waste is further arranged in the discharging cavity. The shielding structure comprises two sets of closing assemblies which are automatically unfolded and closed along with the punch, each closing assembly comprises a blocking plate, a connecting base is arranged at one end of each blocking plate and arranged on a rotating shaft, the rotating shafts are rotationally arranged in lug bases, the lug bases are arranged on the portions, on the two sides of the punched hole, of the upper die base, and the blocking plates are arranged on the upper die base. According to the stamping die, a punched hole can be automatically blocked, the situation that the punch carries waste materials to move out of the punched hole is prevented, the cleanliness in the lower die base is guaranteed, continuous punching can be conducted on a sheet metal part, the punched part of the sheet metal part can be continuously pressed and fixed, and the situation that burrs or deformation occurs on the punched part is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sheet metal processing technical field, concretely relates to a kind of anti-jumping scrap sheet metal stamping die. BACKGROUND

[0002] Sheet metal punching die upper die is male die, lower die is female die, and the upper and lower dies tear the sheet metal to be punched by the force of punch, and the scrap is withdrawn from the lower die, but due to the action of static electricity, the scrap often comes out of the lower die cavity with the upper die, which is easy to produce material jumping, causing product printing, and as domestic product standards are becoming more and more demanding, the appearance of stamping parts is also becoming more and more demanding, therefore, the product printing caused by punching material jumping cannot meet the quality requirements of the product.

[0003] As disclosed in the utility model with the authorized announcement No. CN219211312U, a kind of anti-jumping scrap sheet metal stamping die, including: top seat, base and movable sleeve, the both sides of the top of base are fixedly installed with support rod, the top of support rod is installed with pressure rod, the top of pressure rod is movably installed with movable block, the top of movable block is fixedly installed with top seat, the inner side of top seat and base is fixedly installed with fixator, and the inner side of fixator is installed with movable sleeve;The inner side of knob is installed with lead screw by thread, the bottom of lead screw is rotatably installed with pressing plate, and the movable sleeve and fixator are placed with raw material plate, which fixes the un-punched raw material during the punching process, avoids the problem of un-punched raw material jumping and falling from the device during use, and allows the un-punched raw material to jump under excessive stress by using the fixator, avoiding the complete fixation of raw material and causing material deformation, but the above-mentioned scheme has the following problems: after stamping die closing, the scrap cannot be automatically blocked, which is easy to cause the scrap to jump out of the punching hole, affecting the subsequent stamping process of sheet metal parts, and during the stamping process, the sheet metal part of the punching part cannot be continuously pressed and fixed, which is easy to cause the sheet metal part of the punching part to jump, causing punching burr or punching deformation, therefore, we propose a kind of anti-jumping scrap sheet metal stamping die. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of anti-jumping scrap sheet metal stamping die, to solve the problem of the scrap being automatically blocked after stamping die closing in the above background technology, which is easy to cause the scrap to jump out of the punching hole, affecting the subsequent stamping process of sheet metal parts, and during the stamping process, the sheet metal part of the punching part cannot be continuously pressed and fixed, which is easy to cause the sheet metal part of the punching part to jump, causing punching burr or punching deformation.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a kind of anti-jumping scrap sheet metal stamping die, including upper die plate, upper die holder, lower die plate, lower die holder, punch set on upper die holder and punch hole set on lower die holder, the lower die holder inner bottom is provided with discharge cavity, the discharge cavity is also provided with the shielding structure for automatically blocking waste material;

[0006] The shielding structure includes two sets of closure components that automatically expand and close with the punch, the closure components include a blocking plate, one end of the blocking plate is provided with an adapter seat, the adapter seat is arranged on a rotating shaft, the rotating shaft is rotatably arranged in an ear seat, and the ear seat is arranged on the upper die holder on both sides of the punch hole.

[0007] The punch outer surface is also provided with an automatic pressing structure for continuously positioning the punched part of the sheet metal part.

[0008] Preferably, torsional springs are sleeved on both sides of the rotating shaft, one end of the torsional spring is connected with the ear seat, and the other end of the torsional spring is connected with the adapter seat.

[0009] Preferably, an inclined guide surface is arranged on one side surface of the blocking plate, which can automatically drive the blocking plate to rotate when the punch punches.

[0010] Preferably, the automatic pressing structure includes a pressing sleeve, which is sleeved on one side of the punch and extends out of the punch at the end, so that the pressing sleeve can first contact the sheet metal part and press and fix the punched part.

[0011] Preferably, a guide rod is further arranged on the top of the pressing sleeve, which is movably arranged in a guide groove arranged on one side surface of the upper die holder.

[0012] Preferably, a return spring is further arranged on one side surface of the guide groove, one end of the return spring is connected with the guide rod, which can make the pressing sleeve and the punched part of the sheet metal part always tightly fit and press and fix the punched part of the sheet metal part.

[0013] Preferably, a limiting sliding block is arranged on one side surface of the guide rod, one end of the limiting sliding block is slidably arranged in a limiting sliding groove arranged on one side of the guide groove, which can limit the movement of the guide rod.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] (1) The utility model discloses after punch punching, can automatic to the punch of blocking, prevent the punch from carrying waste material and remove the situation of punching, guarantee the cleanness in lower die holder, can to sheet metal part carry out sustained punching.

[0016] (2) The utility model discloses can in sheet metal part punching process, sustained to sheet metal part punch and hold fixed, avoided the situation that the burr or deformation appeared in punch position, guaranteed the quality of punching. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the main view section structure schematic diagram of the utility model in upper die holder and lower die holder closing die state;

[0019] Figure 3 It is Figure 2 The enlarged structure schematic diagram of A place in;

[0020] Figure 4 It is the main view section structure schematic diagram of the utility model in lower die holder;

[0021] Figure 5 It is the structure schematic diagram of the utility model in blocking plate;

[0022] Figure 6 It is the half section structure schematic diagram of the utility model in automatic pressure holding structure;

[0023] Figure 7 It is Figure 6 The enlarged structure schematic diagram of B place in;

[0024] In the drawing: 1, punch hole;2, lower die holder;3, automatic pressure holding structure;4, upper die plate;5, upper die holder;6, guide column;7, lower die plate;8, punch;21, unloading cavity;22, blocking plate;23, link seat;24, rotating shaft;25, torsional spring;26, ear seat;27, inclined lead-in surface;31, pressure sleeve;32, guide rod;33, guide groove;34, return spring;35, limit sliding slot;36, limit sliding block. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Please refer to Figures 1-5The utility model provides a technical scheme: a kind of anti-jumping scrap sheet metal stamping die, including upper die plate 4, upper die plate 4 can be connected with the stamping arm of punch press, upper die base 5 is arranged on upper die plate 4, lower die plate 7 is fixed on the workbench of punch press, lower die base 2 is arranged on lower die plate 7, punch 8 is set on upper die base 5, the punch hole 1 corresponding with punch 8 is set on lower die base 2, unloading cavity 21 is set in the bottom of lower die base 2, shielding structure for automatically blocking waste is further set in unloading cavity 21;

[0027] Shielding structure includes two groups of closed components, and the closed component includes blocking plate 22, the blocking plate 22 one end is provided with adapter seat 23, adapter seat 23 is arranged on rotating shaft 24, rotating shaft 24 is rotatably arranged in ear seat 26, ear seat 26 is arranged on the upper die base 5 of both sides of punch hole 1, the rotating shaft 24 both sides are sleeved with torsion spring 25, one end of torsion spring 25 is connected with ear seat 26, and the other end of torsion spring 25 is connected, when punch 8 is punched to sheet metal part, punch 8 can drive blocking plate 22 to rotate, by the setting of torsion spring 25, when rotating shaft 24 rotates, it can drive torsion spring 25 to rotate, under the action of torsion spring 25, rotating shaft 24 is rotated back, and punch hole 1 is automatically blocked, to prevent the situation of scrap material jumping.

[0028] First, sheet metal part is installed in the die cavity of lower die base 2, moves lower die base 2 by driving upper die plate 4 by punch press, lower die base 2 drives punch 8 to move downwards, when punch 8 is punched to sheet metal part, punch 8 drives waste to pass through punch hole 1, when punch 8 passes through, two groups of blocking plate 22 are rotated, blocking plate 22 drives adapter seat 23 to rotate, adapter seat 23 drives rotating shaft 24 to rotate, rotating shaft 24 drives torsion spring 25 to rotate, when punch hole 1 resets and moves, torsion spring 25 will drive rotating shaft 24 to reset and rotate, in turn makes two groups of blocking plate 22 reset and rotate, and the punch hole 1 is blocked, to prevent the situation of scrap material jumping out of punch hole 1.

[0029] Further, the side surface of the blocking plate 22 is provided with an inclined guide surface 27, and the inclined guide surface 27 is arranged on the blocking plate 22.

[0030] Further, guide column 6 is further arranged on lower die plate 7, guide column 6 is movably arranged in guide sleeve, and guide sleeve is arranged on lower die plate 7, which can guide the movement of lower die plate 7.

[0031] Please refer to Figure 6 And Figure 7The automatic pressing structure 3 is arranged on the outer surface of the punch 8, and comprises a pressing sleeve 31, the pressing sleeve 31 is sleeved on one side of the punch 8, and the end of the pressing sleeve 31 extends out of the punch 8, so that the pressing sleeve 31 can first contact the metal sheet and press and fix the punching part 1, a guide rod 32 is arranged on the top of the pressing sleeve 31, the guide rod 32 is movably arranged in a guide groove 33 arranged on one side surface of the upper die seat 5, the guide rod 32 can guide the movement of the pressing sleeve 31, and a reset spring 34 is arranged on one side surface in the guide groove 33, one end of the reset spring 34 is connected with the guide rod 32, and the reset spring 34 can make the pressing sleeve 31 always closely contact the punching part of the metal sheet and press and fix the punching part of the metal sheet.

[0032] When the punching part 1 is punched, the pressing sleeve 31 contacts the punching part of the metal sheet, when the punch 8 moves downward, the pressing sleeve 31 drives the guide rod 32 to move in the guide groove 33, the guide rod 32 moves and compresses the reset spring 34, the reset spring 34 drives the guide rod 32 to reset and move through the elastic force, and the pressing sleeve 31 can always contact the punching part 1 of the metal sheet and continuously fix the punching part of the metal sheet during the punching process of the punch 8, so that the stability of the punching part of the metal sheet during the punching process is ensured.

[0033] Further, a limiting sliding block 36 is arranged on one side of the outer surface of the guide rod 32, one end of the limiting sliding block 36 is slidably arranged in a limiting sliding groove 35 arranged on one side in the guide groove 33, when the guide rod 32 moves, the guide rod 32 can drive the limiting sliding block 36 to move in the limiting sliding groove 35, and the movement of the guide rod 32 can be limited.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A jump-proof scrap sheet metal stamping die comprising an upper die plate (4), an upper die holder (5), a lower die plate (7), a lower die holder (2), a punch (8) arranged on the upper die holder (5), and a punch hole (1) arranged on the lower die holder (2), characterized in that: The lower die seat (2) is internally provided with a discharging cavity (21), and a shielding structure for automatically shielding waste is further arranged in the discharging cavity (21); The shielding structure comprises two groups of closed assemblies which are automatically opened and closed along with the punch (8), and each closed assembly comprises a shielding plate (22) which is provided with an engaging seat (23) at one end, the engaging seat (23) is arranged on a rotating shaft (24), the rotating shaft (24) is rotatably arranged in an ear seat (26), and the ear seat (26) is arranged on the upper die seat (5) on both sides of the punch (1). Wherein, the outer surface of the punch (8) is further provided with an automatic pressing structure (3) for continuously positioning the punched part of the sheet metal part.

2. The anti-ejection scrap sheet metal stamping die of claim 1, wherein: The rotating shaft (24) is sleeved with a torsion spring (25) on both sides, one end of the torsion spring (25) is connected with the ear seat (26), and the other end of the torsion spring (25) is connected with the connecting.

3. The anti-ejection scrap sheet metal stamping die of claim 1, wherein: The shielding plate (22) is provided with an inclined guide surface (27) on one side surface.

4. The anti-ejection scrap sheet metal stamping die of claim 1, wherein: The automatic pressing structure (3) comprises a pressing sleeve (31), the pressing sleeve (31) is sleeved on one side of the punch (8), and the end of the pressing sleeve (31) extends out of the punch (8).

5. The anti-ejection scrap sheet metal stamping die of claim 4, wherein: The pressing sleeve (31) is further provided with a guide rod (32) at the top, the guide rod (32) is movably arranged in a guide groove (33), and the guide groove (33) is arranged on one side surface of the upper die seat (5).

6. The anti-ejection scrap sheet metal stamping die of claim 5, wherein: The guide groove (33) is further provided with a reset spring (34) on one side surface, one end of the reset spring (34) is connected with the guide rod (32).

7. The anti-ejection scrap sheet metal stamping die of claim 5 or 6, wherein: The outer surface of the guide rod (32) is provided with a limiting sliding block (36) on one side, one end of the limiting sliding block (36) is slidably arranged in a limiting sliding groove (35), and the limiting sliding groove (35) is arranged in one side of the guide groove (33).

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