CN219503543U - Pipe cap axial punching die with demolding damage prevention blank function - Google Patents
Pipe cap axial punching die with demolding damage prevention blank function Download PDFInfo
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- CN219503543U CN219503543U CN202320592648.7U CN202320592648U CN219503543U CN 219503543 U CN219503543 U CN 219503543U CN 202320592648 U CN202320592648 U CN 202320592648U CN 219503543 U CN219503543 U CN 219503543U
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Abstract
The utility model discloses a pipe cap axial punching die with a demolding damage prevention blank function, which comprises an upper die and a lower die, wherein the upper die comprises an upper die movable module, an upper die stripper plate movably connected below the upper die movable module through a discharging limit screw and an upper die reset spring propped between the upper die movable module and the lower die stripper plate; the upper die stripper plate is fixedly penetrated with a pipe cap positioning guide sleeve, and a punching ejector rod on the upper die movable module is penetrated in a central hole of the upper die stripper plate; the lower die comprises a lower die fixing module, a pipe cap positioning concave table matched with the pipe cap positioning guide sleeve is arranged on the lower die fixing module to position the pipe cap, and a mandril abdication hole is arranged in the center of the lower die fixing module; the method is characterized in that: the lower die further comprises a lower die floating stripper plate which is arranged between the upper die stripper plate and the lower die fixing module and used for stopping the pipe cap from retreating along with the pipe cap positioning guide sleeve, the lower die floating stripper plate is propped against the lower die fixing module through a lower die reset spring with the elasticity smaller than that of the upper die reset spring, and a guide sleeve movable hole for the pipe cap positioning guide sleeve to pass through is formed in the lower die floating stripper plate. The die can ensure that the pipe cap is safely demolded on the premise of having good coaxiality with the pipe cap positioning guide sleeve.
Description
Technical Field
The utility model relates to a pipe cap axial punching die with a blank demolding damage prevention function.
Background
In the prior art, the pipe cap is often required to be axially perforated in some special application fields. For example, a cap, which is a metal package member of the infrared sensor element, must be perforated with an axial light-transmitting hole at the top so that the infrared filter fixed at the inner side can transmit infrared rays of a specific wavelength range required from the outside to the sensing chip inside the sensor.
At present, a special pipe cap axial punching die is designed in the industry to punch the pipe cap, and the die mainly comprises an upper die, an upper die stripper plate and an upper die reset spring, wherein the upper die stripper plate is movably connected to the lower part of the upper die movable die through a discharge limit screw, the upper die reset spring is propped between the upper die movable die and the upper die stripper plate and is used for providing elastic reset force for the upper die movable die to deviate from the upper die stripper plate so as to ensure that the upper die movable die can be retracted and reset relative to the upper die stripper plate. A pipe cap positioning guide sleeve penetrates through and is fixedly arranged on the upper die stripper plate, and a punching ejector rod penetrating through a central hole of the pipe cap positioning guide sleeve is fixedly arranged on the upper die movable module; the pipe cap positioning concave table is matched with the pipe cap positioning guide sleeve to position the pipe cap, and a mandril abdicating hole opposite to the punching mandril is arranged in the center of the pipe cap positioning concave table.
The working principle of the pipe cap axial punching die is as follows: the strip-shaped blank with the pipe cap formed in advance is conveyed to the lower part of the upper die through a special feeding mechanism, the upper die movable module is driven by a driving mechanism of the die to move downwards to drive the upper die stripper plate to move downwards together, when the upper die stripper plate contacts the lower die fixed module, the pipe cap is firstly brought into the pipe cap positioning concave table through the pipe cap positioning guide sleeve, then the upper die movable module overcomes the elasticity of the upper die reset spring to continue to move downwards, and the punching operation is completed in the axial direction of the pipe cap through the punching ejector rod.
And then the upper die movable module firstly moves upwards to reset under the action of an upper die reset spring to enable the punching ejector rod to retract, and finally the upper die movable module continues to move upwards to enable the upper die stripper plate to also move upwards to drive the pipe cap to be separated from the pipe cap positioning concave table so as to be convenient for demoulding.
However, the above-mentioned existing pipe cap axial punching die exposes the following problems in practical use:
it is known that the smaller the gap between the pipe cap and the pipe cap positioning guide sleeve is, the better the coaxiality of the pipe cap and the pipe cap positioning guide sleeve is, and the higher the machining precision of the corresponding workpiece is. In order to meet the requirements of the drawing preset by the customer in the production of the enterprise at present, the design value with good gap (namely coaxiality) is not more than 0.03mm. However, too small a gap brings another problem that the pipe cap and the pipe cap positioning guide sleeve have strong adhesion force under the small gap, so that the pipe cap can adhere to the pipe cap positioning guide sleeve to continue to move upwards after punching is finished, and finally, the strip-shaped blank is pulled out due to too large upward distance, so that the die cannot be safely demolded and subsequent punching operation can not be performed.
At present, no good solution exists in the industry, and the coaxiality design requirement of the pipe cap and the pipe cap positioning guide sleeve can only be forced to be enlarged, and the coaxiality design requirement is set to be not smaller than 0.1, so that the adhesion force between the pipe cap and the pipe cap positioning guide sleeve is reduced, the pipe cap cannot follow the pipe cap positioning guide sleeve when the punching is finished, and therefore safe demoulding is realized, and blank damage is prevented. But obviously, the method is at the cost of sacrificing the processing precision of the workpiece, and the drawing design requirements required by customers are hardly met, and the loss is caused for enterprises.
Disclosure of Invention
The utility model aims at: the utility model provides a pipe cap axial punching mould with prevent drawing of patterns damage blank function, it can be under the prerequisite that ensures that pipe cap and pipe cap location guide pin bushing have better axiality, realizes the safe drawing of patterns of pipe cap to accomplish not only to prevent the blank damage, can guarantee work piece machining precision again.
The technical scheme of the utility model is as follows: the pipe cap axial punching die with the function of preventing blank damage caused by demolding comprises an upper die and a lower die, wherein the upper die comprises an upper die movable module, an upper die stripper plate movably connected to the lower part of the upper die movable module through a discharge limit screw, and an upper die reset spring which is propped between the upper die movable module and the upper die stripper plate and is used for resetting the upper die movable module relative to the upper die stripper plate in a retreating way; a pipe cap positioning guide sleeve penetrates through and is fixedly arranged on the upper die stripper plate, and a punching ejector rod penetrating through a central hole of the pipe cap positioning guide sleeve is fixedly arranged on the upper die movable module; the lower die comprises a lower die fixing module, a pipe cap positioning concave table matched with the pipe cap positioning guide sleeve for positioning the pipe cap is arranged on the lower die fixing module, and a mandril abdicating hole opposite to the punching mandril is arranged in the center of the pipe cap positioning concave table; the method is characterized in that: the lower die further comprises a lower die floating stripper plate which is arranged between the upper die stripper plate and the lower die fixing module and used for stopping the pipe cap from retreating along with the pipe cap positioning guide sleeve, the lower die floating stripper plate is propped against the lower die fixing module through a lower die reset spring, the elasticity of the lower die reset spring is smaller than that of the upper die reset spring, and meanwhile, a guide sleeve movable hole for the pipe cap positioning guide sleeve to pass through is formed in the lower die floating stripper plate.
Furthermore, the lower die further comprises a limiting block which is fixed on the lower die fixing module through a supporting piece and used for limiting the ascending distance of the floating stripper plate of the lower die. The height of the lower die floating stripper plate can be effectively controlled by adjusting the setting height of the limiting block under the action of the lower die reset spring, so that the pipe cap can be demoulded at a proper position. In practical implementation, the supporting piece can be a support upright rod, a support formed by welding profile steel or a support upright block, and the limiting block can be welded with the supporting piece or connected by adopting a connecting piece, and can also be integrally formed.
Furthermore, the supporting piece is a guide vertical block with the longitudinal movable guide function of the lower die floating stripper plate, and the lower die floating stripper plate is provided with a guide hole or a guide open slot matched with the guide vertical block. The guide vertical block guides the longitudinal movement of the lower die floating stripper plate, so that the stability and the accuracy of the longitudinal movement of the lower die floating stripper plate can be ensured.
More preferably, the guide vertical blocks are two guide sleeve movable holes which are symmetrically distributed left and right with respect to the lower die floating stripper plate, and the limiting blocks are respectively fixed on each guide vertical block. The floating stripper plate of the lower die is guided by the guide vertical blocks at the two sides, so that the stability of the longitudinal movement of the floating stripper plate of the lower die can be further improved, and the function of limiting the floating stripper plate of the lower die in the left-right direction is achieved.
Further, the upper die movable module comprises an upper die holder and an upper die movable plate fixed at the bottom of the upper die holder, the upper die stripper plate is movably connected to the upper die movable plate through the unloading limit screw, and the upper die reset spring is propped between the upper die stripper plate and the upper die movable plate or the upper die holder; at least one of the upper die base and the upper die movable plate is fixedly provided with the punching ejector rod; the lower die fixing module comprises a lower die holder and a lower die fixing plate fixed at the upper part of the lower die holder, and the pipe cap positioning concave table is arranged on the lower die fixing plate; the lower die floating stripper plate is arranged between the upper die stripper plate and the lower die fixing plate, the lower die floating stripper plate is propped against the lower die fixing plate or the lower die base through the lower die reset spring, and a limiting block for limiting the ascending distance of the lower die floating stripper plate is fixed on at least one of the lower die base and the lower die fixing plate through the supporting piece.
More preferably, in order to facilitate the assembly of the lower die fixing module, the lower die fixing module further comprises a pipe cap locating plate and a punching insert, a concave cavity is formed in the lower die fixing plate, the pipe cap locating plate and the punching insert located at the lower portion of the pipe cap locating plate are arranged in the concave cavity, a through hole is formed in the pipe cap locating plate together with the top of the punching insert to form a pipe cap locating concave table, and the ejector rod abdicating hole is formed in the punching insert.
More preferably, in the present utility model, a vertical guide post penetrating through the upper die movable plate, the upper die stripper plate and the lower die floating stripper plate in sequence is fixed on the lower die base, and a vertical guide hole matched with the vertical guide post is provided on the lower die fixed plate. The design ensures that the die clamping positions of the upper die and the lower die are more accurate and reliable, and simultaneously ensures that the movement of the upper die movable plate and the upper die stripper plate on the upper die has better consistency and stability when the upper die descends.
More preferably, in the utility model, two limiting blocks are fixed on the lower die holder, the two limiting blocks are symmetrically distributed on two sides of the lower die fixing plate, and each limiting block is provided with a transverse convex part for limiting the floating stripper plate of the lower die to ascend.
More preferably, a choke plug screw is fixed in the upper die holder, threads are arranged on the upper portion of the punching ejector rod and are matched and fixed with the choke plug screw, and the lower portion of the punching ejector rod penetrates through the upper die movable plate and then is matched with the central hole of the pipe cap positioning guide sleeve in a penetrating mode.
Further, the elastic force of the upper die return spring is more than three times of that of the lower die return spring. The elastic force of the upper die reset spring is larger than that of the lower die reset spring, and the purpose is to ensure that when the upper die descends, the upper die stripper plate and the pipe cap positioning guide sleeve thereof can position the pipe cap into the pipe cap positioning concave table firstly, and then the punching ejector rod pushes down again to axially punch the pipe cap.
Further, the coaxiality between the pipe cap and the pipe cap positioning guide sleeve is not more than 0.03mm.
The working principle of the pipe cap axial punching die is as follows:
when the upper die stripper plate contacts the lower die floating stripper plate, the elastic force of the upper die reset spring is larger than that of the lower die reset spring, so that the lower die floating stripper plate also descends, at the moment, the pipe cap positioning guide sleeve on the upper die stripper plate penetrates through the guide sleeve moving hole on the lower die floating stripper plate, the pipe cap on the pipe cap is brought into the pipe cap positioning concave table of the lower die moving module, and then the upper die moving module further overcomes the elastic force of the upper die reset spring to continue descending until contacting with the upper die stripper plate, so that punching operation is completed in the axial direction of the pipe cap through punching.
When the die is opened, the upper die movable module firstly moves upwards to reset under the action of the upper die reset spring, is separated from the upper die stripper plate, and enables the punching ejector rod to retract, and the retraction distance is controlled by the unloading limit screw as in the prior art. And then the upper die stripper plate continues to ascend and drives the pipe cap positioning guide sleeve and the pipe cap on the pipe cap positioning guide sleeve to be separated from the pipe cap positioning concave table. And simultaneously, under the action of a lower die reset spring, the lower die floating stripper plate and the upper die stripper plate are reset together in an upward direction, so that the pipe cap is abutted against the lower die floating stripper plate to be in an upward direction together, and the upward direction distance of the lower die floating stripper plate is controlled by a limiting block. Finally, the pipe cap positioning guide sleeve is retracted from the guide sleeve movable hole under the drive of the upper die stripper plate, and the pipe cap is separated from the pipe cap positioning guide sleeve due to the stop of the lower die floating stripper plate, so that safe demoulding is realized, and the blank is prevented from being damaged by strain.
The utility model has the advantages that:
1. according to the utility model, the lower die floating stripper plate is further added on the basis of the existing die structure, and when the die is opened, the lower die floating stripper plate can stop the pipe cap from backing to the original reset height of the upper die stripper plate along with the pipe cap positioning guide sleeve, so that the band-shaped blank where the pipe cap is located can be effectively prevented from being damaged by pulling due to overlarge uplink distance, the safe demolding is realized, the subsequent punching operation can be smoothly performed, the waste is reduced, and the production cost is saved for enterprises.
The utility model realizes safe demoulding on the premise of ensuring that the pipe cap is adhered to the pipe cap positioning guide sleeve, so that the pipe cap and the pipe cap positioning guide sleeve are not required to be prevented from being adhered in the mode of increasing the coaxiality of the pipe cap and the pipe cap positioning guide sleeve, expanding a gap and sacrificing the precision of a workpiece like the prior art. In contrast, the coaxiality of the pipe cap and the pipe cap positioning shaft sleeve can be further reduced, the coaxiality can be completely not more than 0.03mm so as to meet the drawing design requirements of customers, the machining precision of pipe cap workpieces is greatly guaranteed, and the product quality is improved.
The utility model has the advantages of simple integral structure, convenient implementation and low manufacturing cost, thus being easy to popularize.
According to the utility model, the limiting block for limiting the ascending distance of the lower die floating stripper plate is further fixed on the lower die fixing module through the supporting piece, the ascending height of the lower die floating stripper plate under the action of the lower die reset spring can be effectively controlled by adjusting the setting height of the limiting block, and the pipe cap can be ensured to be demoulded at a proper position. The supporting piece is a guide vertical block with the function of guiding the longitudinal movement of the lower die floating stripper plate, and the stability and the accuracy of the longitudinal movement of the lower die floating stripper plate can be further ensured.
The lower die holder is further fixed with a vertical guide post which sequentially passes through the upper die movable plate, the upper die stripper plate and the lower die floating stripper plate, and the lower die fixed plate is provided with a vertical guide hole matched with the vertical guide post. The design ensures that the die clamping positions of the upper die and the lower die are more accurate and reliable, and simultaneously ensures that the movement of the upper die movable plate and the upper die stripper plate on the upper die has better consistency and stability when the upper die descends.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of an open mold state of the present utility model;
fig. 2 is a schematic diagram of the structure of the mold closing state of the present utility model.
Wherein: 1. an upper die stripper plate; 2. a discharging limit screw; 3. an upper die return spring; 4. the pipe cap is positioned and guided; 5. punching a top rod; 6. a pipe cap positioning concave table; 7. a mandril abdicating hole; 8. blank material; 801. a tube cap; 9. a lower die floating stripper plate; 901. a guide sleeve movable hole; 10. a lower die return spring; 11. a limiting block; 12. an upper die holder; 13. an upper die movable plate; 14. a lower die holder; 15. a lower die fixing plate; 16. a pipe cap positioning plate; 17. punching an insert; 18. a vertical guide post; 19. a vertical guide hole; 20. a choke plug screw; 21. and guiding the vertical blocks.
Detailed Description
The following is a description of the specific embodiment of the axial punching die for the pipe cap with the blank demolding damage prevention function, which is provided by the utility model and is shown in fig. 1-2, and is as follows:
the upper die consists of an upper die movable module, an upper die stripper plate 1, a discharge limit screw 2, an upper die reset spring 3, a pipe cap positioning guide sleeve 4, a punching ejector rod 5 and a vertical guide post 18, wherein the upper die movable module in the embodiment consists of an upper die holder 12 and an upper die movable plate 13 fixed at the bottom of the upper die holder 12. The upper die stripper plate 1 is movably connected to the upper die movable plate 13 through a discharge limit screw 2, a spring positioning hole is formed in the upper die holder 12, one end of the upper die reset spring 3 is propped in the spring positioning hole, and the other end of the upper die reset spring passes through the upper die movable plate 13 and is propped on the upper die stripper plate 1. The upper die return spring 3 provides an elastic return force by which the upper die movable plate 13 moves away from the upper die stripper plate 1 to ensure that the upper die movable plate 13 can be retracted and returned relative to the upper die stripper plate 1.
In this embodiment, the upper die stripper plate 1 is fixedly provided with a cap positioning guide sleeve 4, a choke plug screw 20 is fixed in the upper die holder 12, threads are arranged on the upper portion of the punching ejector rod 5 to be matched and fixed with the choke plug screw 20, and the lower portion of the punching ejector rod 5 passes through the upper die movable plate 13 and then is matched with the central hole of the cap positioning guide sleeve 4 in a penetrating manner.
Still combine fig. 1 and 2 to show, the lower mould in this embodiment comprises lower mould fixed module, pipe cap positioning concave station 6, ejector pin hole 7, lower mould floating stripper 9, lower mould reset spring 10, stopper 11, vertical guide hole 19 and direction riser 21 jointly. The lower die fixing module consists of a lower die holder 14, a lower die fixing plate 15, a pipe cap positioning plate 16 and a punching insert 17.
A lower die fixing plate 15 is fixed on the upper portion of the lower die holder 14, a pipe cap positioning concave table 6 which is matched with the pipe cap positioning guide sleeve 4 to position the pipe cap 801 is arranged on the lower die fixing plate 15, and a mandril abdication hole 7 which is opposite to the punching mandril 5 is arranged in the center of the pipe cap positioning concave table 6. Referring to fig. 1 and 2, in this embodiment, the lower die fixing plate 15 is provided with a cavity, in which a cap positioning plate 16 and a punching insert 17 located at the lower part of the cap positioning plate 16 are disposed, the cap positioning plate 16 is provided with a through hole and the top of the punching insert 17 together form the cap positioning concave 6, and the ejector pin abdicating hole 7 is disposed on the punching insert 17.
The utility model has the core improvement that: a lower die floating stripper plate 9 for stopping the tube cap 801 from backing along with the tube cap positioning guide sleeve 4 is arranged between the upper die stripper plate 1 and the lower die fixing plate 15, in this embodiment, the lower die floating stripper plate 9 is propped against the lower die holder 14 through a lower die reset spring 10 penetrating through the lower die fixing plate 15, and the lower die reset spring 10 provides an elastic reset force for the lower die floating stripper plate 9 to deviate from the lower die fixing plate 15, so that the lower die floating stripper plate 9 can be ensured to backing and reset. The lower die floating stripper plate 9 is provided with a guide sleeve movable hole 901 for the pipe cap positioning guide sleeve 4 to pass through so that the pipe cap positioning guide sleeve can be matched with the pipe cap positioning concave table 6.
In this embodiment, the limiting blocks 11 for limiting the upward distance of the floating stripper plate 9 of the lower die are two left and right, and are respectively fixed on the lower die holder 14 through the guide vertical blocks 21. The number of guide vertical blocks 21 on the lower die holder 14 is two, and the guide vertical blocks are distributed on two sides of the lower die fixing plate 15 and are distributed symmetrically left and right relative to the guide sleeve movable holes 901 of the lower die floating discharge plate 9. The left and right ends on the lower die floating stripper plate 9 are respectively provided with a guide opening groove matched with the corresponding guide vertical block 21, the guide vertical block 21 has a longitudinal movable guide function on the lower die floating stripper plate 9, the stability and accuracy of the longitudinal movement of the lower die floating stripper plate 9 can be ensured, and meanwhile, the two guide vertical blocks 21 on two sides also play a role in limiting the left and right directions of the lower die floating stripper plate 9.
The elastic force of the upper die return spring 3 is three times that of the lower die return spring 10 in the present embodiment.
In this embodiment, the coaxiality between the pipe cap 801 and the pipe cap positioning guide sleeve 4 is not greater than 0.03mm, for example, may be 0.01mm.
Referring to fig. 1 and 2 again, in this embodiment, the vertical guide posts 18 penetrating through the upper movable die plate 13, the upper die stripper plate 1 and the lower die floating stripper plate 9 in order are fixed on the lower die holder 14, and the vertical guide holes 19 matching with the vertical guide posts 18 are provided on the lower die fixing plate 15.
The working principle of the above embodiment is described as follows with reference to fig. 1 and 2:
when the die is closed, the strip-shaped blank 8 with the pipe cap 801 formed in advance is conveyed to the lower part of the upper die through a special feeding mechanism, the upper die holder 12 and the upper die movable plate 13 are driven by a driving mechanism of the die to move downwards to drive the upper die stripper plate 1 to move downwards together, when the upper die stripper plate 1 contacts the lower die floating stripper plate 9, the lower die floating stripper plate 9 is also moved downwards due to the fact that the elastic force of the upper die reset spring 3 is larger than that of the lower die reset spring 10, at the moment, the pipe cap positioning guide sleeve 4 on the upper die stripper plate 1 passes through the guide sleeve movable hole 901 on the lower die floating stripper plate 9, the pipe cap 801 on the blank 8 is brought into the pipe cap positioning concave table 6 of the lower die fixed plate 15, and then the upper die movable plate 13 further overcomes the elastic force of the upper die reset spring 3 to move downwards until contacting the upper die stripper plate 1, so that the punching operation is completed in the axial direction of the pipe cap 801 through the ejector rod 5.
When the die is opened, the upper die movable plate 13 firstly moves upwards to reset under the action of the upper die reset spring 3, is separated from the upper die stripper plate 1, and enables the punching ejector rod 5 to retract, and the retraction distance is controlled by the unloading limit screw 2 as in the prior art. Then the upper die stripper plate 1 continues to ascend and drives the pipe cap positioning guide sleeve 4 and the pipe cap 801 thereon to be separated from the pipe cap positioning concave table 6. Meanwhile, under the action of the lower die reset spring 10, the lower die floating stripper plate 9 and the upper die stripper plate 1 are reset together in an upward direction, so that the pipe cap 801 is abutted against the lower die floating stripper plate 9 to be in an upward direction, and the upward direction distance of the lower die floating stripper plate 9 is controlled by the limiting block 11. Finally, the pipe cap positioning guide sleeve 4 is retracted from the guide sleeve movable hole 901 under the drive of the upper die stripper plate 1, and the pipe cap 801 is blocked by the lower die floating stripper plate 9, so that the pipe cap positioning guide sleeve 4 is separated from the pipe cap positioning guide sleeve 4 to realize safe demoulding, and the blank 8 is prevented from being damaged by strain.
The above embodiments are merely for illustrating the technical concept and features of the present utility model, and are not intended to limit the scope of the present utility model to those skilled in the art to understand the present utility model and implement the same. All modifications made according to the spirit of the main technical proposal of the utility model should be covered in the protection scope of the utility model.
Claims (10)
1. The pipe cap axial punching die with the function of preventing blank damage caused by demolding comprises an upper die and a lower die, wherein the upper die comprises an upper die movable module, an upper die stripper plate (1) movably connected to the lower part of the upper die movable module through a discharge limit screw (2) and an upper die reset spring (3) which is propped between the upper die movable module and the upper die stripper plate (1) and is used for retracting and resetting the upper die movable module relative to the upper die stripper plate (1); a pipe cap positioning guide sleeve (4) is fixedly penetrated on the upper die stripper plate (1), and a punching ejector rod (5) penetrating through the central hole of the pipe cap positioning guide sleeve (4) is fixedly arranged on the upper die movable module; the lower die comprises a lower die fixing module, a pipe cap positioning concave table (6) matched with the pipe cap positioning guide sleeve (4) for positioning the pipe cap (801) is arranged on the lower die fixing module, and a mandril abdicating hole (7) opposite to the punching mandril (5) is arranged in the center of the pipe cap positioning concave table (6); the method is characterized in that: the lower die further comprises a lower die floating stripper plate (9) which is arranged between the upper die stripper plate (1) and the lower die fixing module and used for stopping the pipe cap (801) from retreating along with the pipe cap positioning guide sleeve (4), the lower die floating stripper plate (9) is propped against the lower die fixing module through a lower die reset spring (10), the elastic force of the lower die reset spring (10) is smaller than that of the upper die reset spring (3), and meanwhile, a guide sleeve movable hole (901) for the pipe cap positioning guide sleeve (4) to pass through is formed in the lower die floating stripper plate (9).
2. The pipe cap axial punching die with the function of preventing blank damage caused by demolding according to claim 1, wherein the lower die further comprises a limiting block (11) which is fixed on the lower die fixing module through a supporting piece and used for limiting the ascending distance of the floating stripper plate (9) of the lower die.
3. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 2, wherein the die is characterized in that: the support piece is a guide vertical block (21) with the function of longitudinally movably guiding the lower die floating stripper plate (9), and a guide hole or a guide opening groove matched with the guide vertical block (21) is formed in the lower die floating stripper plate (9).
4. A cap axial punch die with die release damage prevention function according to claim 3, wherein: the guide vertical blocks (21) are two guide sleeve movable holes (901) which are symmetrically distributed left and right relative to the lower die floating stripper plate (9), and the limiting blocks (11) are respectively fixed on each guide vertical block (21).
5. A cap axial punch die with blank function of preventing demolding damage according to claim 2, 3 or 4, characterized in that: the upper die movable module comprises an upper die holder (12) and an upper die movable plate (13) fixed at the bottom of the upper die holder (12), the upper die stripper plate (1) is movably connected to the upper die movable plate (13) through the unloading limit screw (2), and the upper die reset spring (3) is propped between the upper die stripper plate (1) and the upper die movable plate (13) or the upper die holder (12); the punching ejector rod (5) is fixed on at least one of the upper die holder (12) and the upper die movable plate (13); the lower die fixing module comprises a lower die holder (14) and a lower die fixing plate (15) fixed on the upper part of the lower die holder (14), and the pipe cap positioning concave table (6) is arranged on the lower die fixing plate (15); the lower die floating stripper plate (9) is arranged between the upper die stripper plate (1) and the lower die fixing plate (15), the lower die floating stripper plate (9) is propped against the lower die fixing plate (15) or the lower die holder (14) through the lower die reset spring (10), and a limiting block (11) for limiting the ascending distance of the lower die floating stripper plate (9) is fixed on at least one of the lower die holder (14) and the lower die fixing plate (15) through a supporting piece.
6. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 5, wherein the die is characterized in that: the lower die fixing module further comprises a pipe cap locating plate (16) and a punching insert (17), a concave cavity is formed in the lower die fixing plate (15), the pipe cap locating plate (16) and the punching insert (17) located at the lower portion of the pipe cap locating plate (16) are arranged in the concave cavity, a through hole is formed in the pipe cap locating plate (16) together with the top of the punching insert (17) to form a pipe cap locating concave table (6), and the ejector rod abdicating hole (7) is formed in the punching insert (17).
7. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 5, wherein the die is characterized in that: the lower die holder (14) is fixedly provided with a vertical guide pillar (18) which sequentially passes through the upper die movable plate (13), the upper die stripper plate (1) and the lower die floating stripper plate (9), and the lower die fixed plate (15) is provided with a vertical guide hole (19) matched with the vertical guide pillar (18).
8. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 5, wherein the die is characterized in that: a choke plug screw (20) is fixed in the upper die holder (12), threads are arranged on the upper portion of the punching ejector rod (5) and are matched and fixed with the choke plug screw (20), and the lower portion of the punching ejector rod (5) penetrates through the upper die movable plate (13) and then is matched with the central hole of the pipe cap positioning guide sleeve (4) in a penetrating mode.
9. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 1, wherein the die is characterized in that: the elastic force of the upper die return spring (3) is more than three times of that of the lower die return spring (10).
10. The pipe cap axial punching die with the function of preventing demolding damage to blanks, according to claim 1, wherein the die is characterized in that: the coaxiality between the pipe cap (801) and the pipe cap positioning guide sleeve (4) is not more than 0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592648.7U CN219503543U (en) | 2023-03-23 | 2023-03-23 | Pipe cap axial punching die with demolding damage prevention blank function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592648.7U CN219503543U (en) | 2023-03-23 | 2023-03-23 | Pipe cap axial punching die with demolding damage prevention blank function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219503543U true CN219503543U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320592648.7U Active CN219503543U (en) | 2023-03-23 | 2023-03-23 | Pipe cap axial punching die with demolding damage prevention blank function |
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2023
- 2023-03-23 CN CN202320592648.7U patent/CN219503543U/en active Active
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