Stripping mechanism applied in stamping die

Abstract

The utility model provides a stripping mechanism applied to a stamping die. The die comprises an upper die set and a lower die set, the upper die set is provided with a punching head, the lower die set is provided with a cavity groove and a lower sliding groove, the cavity groove is used for containing raw materials, the top of the lower sliding groove is provided with a lower sliding hole communicated with the cavity groove, the lower sliding groove is provided with a lower air bag, and a lower sliding plate located in the lower sliding groove and sliding in a lifting mode is tightly attached to the lower air bag. The lower slide plate is provided with a lower ejector pin which is positioned in the lower slide hole, slides up and down and can extend into the cavity groove; when the upper die set and the lower die set are combined, the stamping head is used for stamping raw materials in the cavity groove to form a stamping part. When the upper die set and the lower die set are opened, air in the lower air bag pushes the lower sliding plate to drive the lower ejector pin to rise to the cavity groove to eject the stamping part to be separated from the cavity groove. The utility model belongs to the technical field of stamping dies.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of punch die, especially relates to a material stripping mechanism applied to punch die. BACKGROUND

[0002] The punch die is a kind of special process equipment, which is installed on a pressure machine (such as a punch), and the upper die set and the lower die seat of the punch die are closed and opened by the pressure machine to exert pressure on the raw material (such as metal or non-metal sheet material) to make it separate or plastically deform, thereby obtaining the required shape, size and performance of the parts or semi-finished products.

[0003] In the stamping process, since the die is formed by applying pressure to the raw material to form the stamping part, the part in contact with the surface of the die is prone to adhesion, which makes it difficult to unload the material later. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a material stripping mechanism applied to punch die to solve the technical problems in the background art.

[0005] The material stripping mechanism applied to punch die comprises:

[0006] The upper die set is provided with a punch head.

[0007] The lower die set is provided with a cavity groove and a lower sliding groove, the cavity groove is used for placing the raw material, the top of the lower sliding groove is provided with a lower sliding hole communicated with the cavity groove, the lower sliding groove is provided with a lower air bag, the lower air bag is tightly attached to a lower sliding plate which is lifted and slid in the lower sliding groove, and the lower sliding plate is provided with a lower ejector pin which is lifted and slid in the lower sliding hole and can be inserted into the cavity groove.

[0008] Based on the above technical scheme, the utility model has the following beneficial effects:

[0009] 1. When the upper die set and the lower die set are combined, the punch head is used to stamp the raw material in the cavity groove into a stamping part, and then when the upper die set and the lower die set are opened, the air in the lower air bag pushes the lower sliding plate to drive the lower ejector pin to rise to the cavity groove to lift the stamping part away from the cavity groove, thereby avoiding the stamping part sticking to the cavity groove and making it difficult to take out the stamping part from the cavity groove;

[0010] 2. When the raw material is placed in the cavity groove, the lower ejector pin can be used to support the raw material, so that when the upper die set and the lower die set are combined, the hard impact force caused by the contact between the upper die set and the raw material can be buffered, and the raw material can be damped, thereby reducing the damage gap of the raw material and improving the stamping precision;

[0011] 2. Compared with the traditional method of using the power of opening and closing the (injection) mold to eject the product, the utility model can compress the air in the lower airbag when ejecting the stamping part, thereby using a relatively soft force to eject the stamping part from the cavity groove.

[0012] In order to further optimize the above technical solution, it can be optionally combined with one or more of the following implementation methods without conflict.

[0013] In some embodiments, the lower air bag conduit is connected to an air source device;

[0014] Based on the above technical solution, the utility model further achieves the following beneficial effects:

[0015] 1. Optionally, when the punch head contacts the raw material, the air source device is used to extract the air in the lower air bag, causing the lower ejector pin to descend into the lower sliding hole, thereby enabling the punch head to punch the raw material more stably;

[0016] 2. When the upper and lower mold assemblies are opened, the air source device is used to deliver air to the lower airbag, so that the air in the lower airbag pushes the lower slide and drives the lower ejector to rise to the cavity groove, so that the lower ejector can more stably push the stamping part to separate from the cavity groove.

[0017] In some embodiments, the upper mold assembly includes:

[0018] An upper die base is provided with bolts, the bolts are provided with through holes, and the punching head is fixedly provided on the upper die base;

[0019] The pressing plate is equipped with a slide bar which passes through the through hole so that the pressing plate can be raised and lowered below the upper die base. The top of the slide bar is provided with a hanging block mounted on a bolt, and the punch head passes through the pressing plate.

[0020] Based on the above technical solution, the utility model can further achieve the following beneficial effects:

[0021] 1. When the upper die set and the lower die are combined, the pressing plate is pressed down on the raw material in the cavity in advance to fix the raw material. This can prevent the raw material from shifting during the punching process, thereby improving the punching accuracy.

[0022] 2. When the upper die set and the lower die set are opened, the pressure plate pushes the stamping part down to separate the stamping part from the stamping head, thereby preventing the stamping part from sticking to the stamping head.

[0023] In some embodiments, a spring is provided between the pressing plate and the upper die seat;

[0024] Based on the above technical solution, the utility model can further achieve the following beneficial effects:

[0025] 1. The spring cushioning pressure plate reduces the risk of damage and deformation of the raw material by buffering the impact force at the moment of contact with the raw material;

[0026] 2. After the pressure plate contacts the raw material, the spring pushes the pressure plate to more stably fix the raw material.

[0027] In some embodiments, the upper die set is provided with an air cavity, a piston plate is slidably arranged in the air cavity, the piston plate divides the air cavity into an upper cavity and a lower cavity, the piston plate is provided with an upper ejector pin, the lower cavity is provided with an upper sliding hole extending to the bottom wall of the upper die set, and the upper ejector pin can pass through the upper sliding hole.

[0028] Based on the technical solution, the utility model further realizes the following beneficial effects:

[0029] 1. When the upper die set and the lower die set are combined, the raw material pushes the upper ejector pin into the upper sliding hole, at this time, the upper ejector pin pushes the piston plate to compress the air in the upper cavity, so as to further fix the raw material by using the air pressure in the upper cavity to push the upper ejector pin, and the stamping head can stamp the raw material more accurately.

[0030] 2. When the upper die set and the lower die set are opened, the air in the upper cavity pushes the piston plate to descend and drives the upper ejector pin to push the stamped part to separate from the upper die set and the stamping head, so as to avoid the stamped part sticking to the upper die set and the stamping head.

[0031] In some embodiments, the upper cavity is connected with a pipeline of the air source device; based on the above technical solution, the utility model further realizes the following beneficial effects:

[0032] 1. Optionally, during the combination of the upper die set and the lower die set, when the pressure plate is pressed down to fix the raw material, the air source device is used to extract the air in the upper cavity to drive the piston plate to drive the upper ejector pin into the upper sliding hole, so as to avoid the upper ejector pin and the pressure plate from exerting excessive pressure on the raw material and causing damage.

[0033] 2. When the upper die set and the lower die set are opened, the air source device is used to deliver air to the upper cavity to push the piston plate to descend and drive the upper ejector pin to push the stamped part to separate from the upper die set and the stamping head, so as to avoid the stamped part from sticking to the stamping head and the upper die set. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments in the utility model, the following will make a simple description on the drawings and labels needed to be used in the description of the specific embodiments.

[0035] Figure 1 is a structural schematic diagram of the utility model.

[0036] Reference signs:

[0037] 1, upper die set; 11, punch head; 2, lower die set; 21, cavity groove; 3, lower sliding groove; 31, lower sliding hole; 32, lower air bag; 33, lower sliding plate; 34, lower ejector pin; 4, upper die seat; 41, bolt; 42, through hole; 5, pressing plate; 51, sliding bar; 52, hanging block; 53, spring; 6, air cavity; 61, piston plate; 62, upper cavity; 63, lower cavity; 64, upper ejector pin; 65, upper sliding hole. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following refers to the drawings, and the embodiment is explained.

[0039] Embodiment 1

[0040] As Figure 1 shown, the embodiment provides a stripping mechanism applied in a stamping die, which comprises a lower die set 2, an upper die set 1 and an air source device.

[0041] The lower die set 2 is provided with a cavity groove 21 and a lower sliding groove 3. The cavity groove 21 is used for placing raw materials. The top of the lower sliding groove 3 is provided with a lower sliding hole 31 communicated with the cavity groove 21. The lower sliding groove 3 is provided with a lower air bag 32 connected with the pipeline of the air source device. The lower air bag 32 is tightly attached with a lower sliding plate 33 which is lifted and slid in the lower sliding groove 3. The lower sliding plate 33 is provided with a lower ejector pin 34 which is lifted and slid in the lower sliding hole 31 and can be extended into the cavity groove 21.

[0042] The upper die set 1 comprises a punch head 11, an upper die seat 4 and a pressing plate 5. The punch head 11 is fixedly arranged on the upper die seat 4 and penetrates through the pressing plate 5. The upper die set 1 is provided with an air cavity 6. A piston plate 61 is slidably arranged in the air cavity 6. The piston plate 61 divides the air cavity 6 into an upper cavity 62 and a lower cavity 63. The upper cavity 62 is connected with the pipeline of the air source device. The piston plate 61 is provided with an upper ejector pin 64. The lower cavity 63 is provided with an upper sliding hole 65 extending to the bottom wall of the upper die set 1 and penetrating through the pressing plate 5. The upper ejector pin 64 can penetrate through the upper sliding hole 65. The upper die seat 4 is provided with a bolt 41. The bolt 41 is provided with a through hole 42. The pressing plate 5 is installed with a sliding bar 51. The sliding bar 51 penetrates through the through hole 42 so that the pressing plate 5 can be lifted and moved below the upper die seat 4. The top end of the sliding bar 51 is provided with a hanging block 52 hung on the bolt 41. The pressing plate 5 and the upper die seat 4 are provided with a spring 53.

[0043] The following is the working description of the stripping mechanism applied in the stamping die.

[0044] During the closing process of the upper mold assembly 1 and the lower mold assembly 2: the pressure plate 5 is pre-pressed down onto the raw material in the cavity groove 21 by the thrust of the spring 53 to fix the raw material; at the same time, the air source device is used to extract air from the upper chamber 62 and drive the piston plate 61 to drive the upper ejector pin 64 into the upper sliding hole 65; at the same time, the air source device is used to extract air from the lower airbag 32 to make the lower ejector pin 34 descend into the lower sliding hole 31.

[0045] Subsequently, after the upper die set 1 and the lower die set 2 are clamped, the punch head 11 punches the raw material in the cavity groove 21 into a stamped part.

[0046] Subsequently, when the upper mold assembly 1 and the lower mold assembly 2 are opened: the air source device is used to supply air to the lower air bag 32, so that the air in the lower air bag 32 pushes the lower slide 33 and drives the lower ejector 34 to rise to the cavity groove 21 to push the stamping part to separate from the cavity groove 21; at the same time, the pressure plate 5 pushes the stamping part under the pushing force of the spring 53 to separate the stamping part from the punching head 11; at the same time, the air source device is used to supply air to the upper cavity 62 to push the piston plate 61 down and drive the upper ejector 64 to push the stamping part to separate from the pressure plate 5; finally, the stamping part can be taken out from the cavity groove 21.

[0047] Example 2

[0048] like Figure 1 As shown, this specific embodiment provides a stripping mechanism used in a stamping die, which includes a lower die set 2 and an upper die set 1.

[0049] The lower die assembly 2 is provided with a cavity 21 and a lower chute 3. The cavity 21 is used to hold the raw material. A lower hole 31 is located at the top of the lower chute 3, communicating with the cavity 21. The lower chute 3 is equipped with a lower airbag 32. A lower slide 33, which slides up and down within the lower chute 3, rests against the lower airbag 32. The lower slide 33 is equipped with a lower ejector pin 34, which slides up and down within the lower hole 31 and can extend into the cavity 21.

[0050] The upper die assembly 1 includes a punch head 11, an upper die base 4 and a pressure plate 5. The punch head 11 is fixedly arranged on the upper die base 4 and passes through the pressure plate 5. The upper die assembly 1 is provided with an air cavity 6, in which a piston plate 61 slides. The piston plate 61 divides the air cavity 6 into an upper cavity 62 and a lower cavity 63. The piston plate 61 is provided with an upper ejector pin 64. The lower cavity 63 is provided with an upper sliding hole 65 extending to the bottom wall of the upper die assembly 1 and passing through the pressure plate 5. The upper ejector pin 64 can pass through the upper sliding hole 65. The upper die base 4 is provided with a bolt 41, and the bolt 41 is provided with a through hole 42. The pressure plate 5 is installed with a slide bar 51, which passes through the through hole 42 so that the pressure plate 5 can be raised and lowered under the upper die base 4. The top of the slide bar 51 is provided with a hanging block 52 mounted on the bolt 41.

[0051] The following is a working description of the above-mentioned stripping mechanism when applied in a stamping die.

[0052] In the process of closing the upper die set 1 and the lower die set 2: the pressing plate 5 is pre-pressed into the raw material in the cavity groove 21 by its own gravity to fix the preliminary raw material; at the same time, the raw material pushes the upper ejector pin 64 into the upper sliding hole 65, the upper ejector pin 64 drives the piston plate 61 to compress the air in the upper cavity 62; at the same time, the raw material pushes the lower ejector pin 34 to descend into the lower sliding hole 31, the lower ejector pin 34 drives the lower sliding plate 33 to compress the air in the lower air bag 32.

[0053] Subsequently, after the upper die set 1 and the lower die set 2 are closed: the raw material in the cavity groove 21 is formed into a stamping part by the stamping head 11.

[0054] Subsequently, when the upper die set 1 and the lower die set 2 are opened: the air in the lower air bag 32 is released to push the lower sliding plate 33 to drive the lower ejector pin 34 to rise to the cavity groove 21 to push the stamping part to separate from the cavity groove 21; at the same time, the pressing plate 5 pushes the stamping part downward by its own gravity to separate the stamping part from the stamping head 11; at the same time, the air in the upper cavity 62 is released to push the piston plate 61 to descend to drive the upper ejector pin 64 to push the stamping part to separate from the pressing plate 5; finally, the stamping part can be taken out from the cavity groove 21.

Claims

1. A stripping mechanism used in a stamping die, characterized in that: include: An upper die assembly (1), wherein the upper die assembly (1) is provided with a punching head (11); A lower die assembly (2), wherein the lower die assembly (2) is provided with a cavity groove (21) and a lower slide groove (3), wherein the cavity groove (21) is used for placing raw materials, a lower slide hole (31) is provided at the top of the lower slide groove (3) and is communicated with the cavity groove (21), and the lower slide groove (3) is provided with a lower air bag (32), and a lower slide plate (33) is closely attached to the lower air bag (32) and is located in the lower slide groove (3) and is lifted and slidable, and the lower slide plate (33) is provided with a lower ejector pin (34) which is located in the lower slide hole (31) and is capable of extending into the cavity groove (21); When the upper die set (1) and the lower die set (2) are closed, the punch head (11) is used to punch the raw material in the cavity groove (21) into a stamped part; when the upper die set (1) and the lower die set (2) are opened, the air in the lower air bag (32) pushes the lower slide plate (33) to drive the lower ejector pin (34) to rise to the cavity groove (21) to push the stamped part to separate from the cavity groove (21).

2. The stripping mechanism used in a stamping die according to claim 1, characterized in that: The lower air bag (32) pipeline is connected to an air source device; When the punch head (11) contacts the raw material, the air source device is used to extract the air in the lower air bag (32) so that the lower ejector pin (34) descends into the lower sliding hole (31); when the upper die set (1) and the lower die set (2) are opened, the air source device is used to supply air to the lower air bag (32) so that the air in the lower air bag (32) pushes the lower slide plate (33) and drives the lower ejector pin (34) to rise to the cavity groove (21) to push the stamping part to separate from the cavity groove (21).

3. A stripping mechanism used in a stamping die according to claim 2, characterized in that: The upper die set (1) comprises: An upper die base (4), wherein the upper die base (4) is provided with a bolt (41), the bolt (41) is provided with a through hole (42), and the punch head (11) is fixedly provided on the upper die base (4); A pressing plate (5), the pressing plate (5) is provided with a slide bar (51), the slide bar (51) passes through the through hole (42), so that the pressing plate (5) can be raised and lowered below the upper die base (4), the top end of the slide bar (51) is provided with a hanging block (52) mounted on the bolt (41), and the punch head (11) passes through the pressing plate (5); When the upper die set (1) and the lower die set (2) are closed, the pressing plate (5) is pre-pressed onto the raw material in the cavity groove (21) to fix the raw material; when the upper die set (1) and the lower die set (2) are opened, the pressing plate (5) pushes down the stamping part to separate the stamping part from the stamping head (11).

4. The stripping mechanism used in a stamping die according to claim 3, characterized in that: A spring (53) is provided between the pressing plate (5) and the upper die seat (4).

5. A stripping mechanism for use in a stamping die according to any one of claims 2 to 4, characterized in that: The upper die assembly (1) is provided with an air cavity (6), a piston plate (61) slides in the air cavity (6), the piston plate (61) divides the air cavity (6) into an upper cavity (62) and a lower cavity (63), the piston plate (61) is provided with an upper ejector pin (64), the lower cavity (63) is provided with an upper sliding hole (65) extending to the bottom wall of the upper die assembly (1), and the upper ejector pin (64) can pass through the upper sliding hole (65); When the upper die set (1) and the lower die set (2) are closed, the raw material pushes the upper ejector pin (64) into the upper sliding hole (65); when the upper die set (1) and the lower die set (2) are opened, the air in the upper chamber (62) pushes the piston plate (61) down and drives the upper ejector pin (64) to push the stamping part to separate from the upper die set (1) and the punch head (11).

6. The stripping mechanism used in a stamping die according to claim 5, characterized in that: The upper chamber (62) is connected to the pipeline of the gas source device; When the upper mold assembly (1) and the lower mold assembly (2) are in a closed mold state, the air source device is used to extract air from the upper cavity (62) and drive the piston plate (61) to drive the upper ejector pin (64) to enter the upper sliding hole (65); when the upper mold assembly (1) and the lower mold assembly (2) are in an open mold state, the air source device is used to supply air to the upper cavity (62) to push the piston plate (61) down and drive the upper ejector pin (64) to push the stamping part to separate from the upper mold assembly (1) and the stamping head (11).

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