CN222710583U - A thick plate precision stamping die - Google Patents

Abstract

A thick plate precision stamping processing die belongs to the technical field of stamping dies and comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises an upper die holder, an upper die frame plate, an upper die base plate, an upper die fixing plate and an upper die locating plate, the lower die assembly comprises a lower die holder, a lower die frame plate, a lower die base plate and a lower die fixing plate, a plurality of column sleeve type guide mechanisms, an outer stripper plate connected to the lower die fixing plate, an upper die positioned in the upper die locating plate, a male die, an inner stripper plate penetrating through the upper die, a punching punch, a plurality of positioning guide blocks fixedly connected to the lower die frame plate, and top end parts of the positioning guide blocks are embedded in the outer stripper plate, and a plurality of inner guide columns for enabling the upper die locating plate and the lower die fixing plate to be connected together in a sliding mode.

Description

Precision stamping processing die for thick plate

Technical Field

The utility model belongs to the technical field of stamping dies, and particularly relates to a thick plate precision stamping processing die.

Background

The punching process is a production technology of product parts with certain shapes, sizes and performances by directly applying deformation force to a plate material in a die and deforming the plate material and corresponding punching operation by means of power of conventional or special punching equipment. The plate material, the die and the equipment are three elements of stamping processing. The stamping die is a special technological equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping, called cold stamping die (commonly called cold stamping die), which uses a die arranged on a press machine to apply pressure to the materials so as to separate the materials or realize stamping operation, thereby obtaining a pressure processing method of the required parts. However, the existing common punching and blanking die can only be applied to common cold-rolled plates or stainless steel sheets, because the shearing resistance and the tensile resistance of the common cold-rolled plates and the stainless steel sheets are low, the die process is easy to realize, and for some metal thick plates (generally referred to as plates with the thickness of more than 6 mm), the shearing resistance and the tensile resistance are high, if the existing common punching and blanking die is adopted, the shearing surface of the thick plate has obvious defects such as fracture layers and the like after punching, and meanwhile, the problems of large corner collapse, cracks and burrs exist, the quality of the thick plate material after punching is seriously unqualified, and the production is seriously influenced; in addition, the cutting edge of the common die is easy to collapse in the stamping process, so that the service life of die parts is short, the cost is high, the maintenance is frequent, and mass production cannot be realized, and more deadly, the impact force of the common punch is high in the stamping process of thick plate materials due to the structural characteristics of the common punch, vibration and noise are high, meanwhile, reasonable clearance between a die and a male die in the stamping process cannot be ensured, if the clearance between the die and the male die in the stamping process is large, the material in a deformation zone is subjected to larger stretching action and tensile stress, and micro cracks and tearing of products are caused, in addition, the common die cannot accurately control the position and the pressure of the products stamped by the thick plate, so that the fracture layer of the products is obvious, the quality is seriously unqualified, the shape of the surfaces of the dies can be directly changed, the irreversible influence on stamping shaping is easy, and the production operation is seriously influenced.

In view of the above, it is necessary to design a reasonable improvement of the stamping die so as to be applicable to the stamping operation of thick plate products. To this end, the inventors have advantageously devised that the technical solutions described below are created in this context.

Disclosure of utility model

The utility model aims to provide a thick plate precision stamping processing die which has compact structure, no broken layer defect, long service life and good applicability, is beneficial to realizing small-gap blanking operation on thick plate products and improving the working efficiency and the product quality of stamping operation, simultaneously guaranteeing the superior smoothness of the shearing surface of a blanking through hole, is beneficial to realizing various stress fit actions so as to realize efficient and stable blanking operation and further ensure the processing precision, is beneficial to realizing multiple efficient and accurate guiding and positioning effects by additionally arranging a positioning guide block and an inner guide post, further improves the operation reliability, and is beneficial to reducing stress concentration at a cutting edge by arranging an upper female die cutting edge chamfer part on an upper female die so as to improve the service life and reduce the maintenance cost.

The utility model aims to achieve the purpose, and discloses a thick plate precision stamping processing die which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are arranged up and down oppositely and can be relatively close to and relatively far away from each other, the upper die assembly comprises an upper die holder, an upper die frame plate, an upper die base plate, an upper die fixing plate and an upper die locating plate which are sequentially and fixedly arranged together from top to bottom, and the lower die assembly comprises a lower die holder, a lower die frame plate, a lower die base plate and a lower die fixing plate which are sequentially and fixedly arranged together from bottom to top; the die comprises an upper die plate, a lower die plate, a plurality of column sleeve type guide mechanisms, an outer stripper plate, a male die, an upper female die, a punch, a lower die plate and a lower die plate, wherein the column sleeve type guide mechanisms are arranged between the upper die plate and the lower die plate and realize sliding connection of the upper die plate and the lower die plate, the outer stripper plate is movably connected to the upper part of the lower die plate and positioned below the upper die assembly, the outer stripper plate can realize bearing and positioning of a product to be punched, the lower die plate is provided with a plurality of nitrogen springs, the nitrogen springs sequentially penetrate through the lower die plate, the lower die plate and are propped against the bottom of the outer stripper plate, the upper female die is positioned at the center of the upper female die plate and connected to the lower position of the upper die plate, an upper female die protruding tooth part matched with the peripheral shape of the product to be punched is formed on one side surface of the upper female die facing downwards, the male die is correspondingly arranged at the lower position of the upper female die, the male die is fixedly arranged at the center of the upper die plate and penetrates through the upper die plate, the inner unloading plate is arranged in the upper female die in a penetrating way and corresponds to the male die, the punching punch is used for punching a product and is connected to the lower position of the upper die base plate, the punching punch penetrates through the inner unloading plate, the bottom end part of the punching punch downwards protrudes out of the inner unloading plate, the positioning guide blocks are fixedly connected to the upper surface of the lower die base plate and are positioned at the circumferential edge parts of the lower die base plate and the lower die fixing plate, the top end parts of the positioning guide blocks can be in sliding fit with the outer unloading plate and accurately position the outer unloading plate, and the inner guide posts are positioned on the lower die base plate, sequentially penetrate through the lower die base plate, the lower die fixing plate and the outer unloading plate from bottom to top and can penetrate into the upper female die positioning plate to be in sliding connection with the lower die fixing plate, so that the upper female die positioning plate and the lower die fixing plate are in sliding connection.

In a specific embodiment of the present utility model, the column sleeve type guiding mechanism is provided with an outer guiding column extending along the vertical direction and an outer guiding sleeve arranged at a position below the outer guiding column, the top end part of the outer guiding column is fixedly connected to the upper die frame plate, the outer guiding sleeve is fixedly connected to the lower die frame plate, the outer guiding sleeve is matched with the outer guiding column, and the outer guiding column can penetrate the outer guiding sleeve and realize sliding fit with the outer guiding column, so that the upper die frame plate and the lower die frame plate are in positioning sliding connection.

In another specific embodiment of the present utility model, the upper die holder includes an upper die holder platform plate disposed along a horizontal direction and a plurality of upper die holder support plates disposed in a vertical state, the plurality of upper die holder support plates are fixedly connected to a lower position of the upper die holder platform plate, bottom end portions of the plurality of upper die holder support plates are fixedly connected to the upper die holder plate through fasteners, the upper die holder further includes an upper die holder buffer limiting plate connected to a lower position of the upper die holder platform plate, the upper die holder buffer limiting plate is disposed corresponding to the inner discharge plate and corresponds to an upper position of the inner discharge plate, and a plurality of inner discharge plate limiting columns are connected to the inner discharge plate and sequentially penetrate through the upper die fixing plate, the upper die pad and the upper die holder plate from bottom to top along a vertical direction, and top end portions of the inner discharge plate limiting columns can be abutted to the upper die holder buffer limiting plate.

In still another specific embodiment of the present utility model, the lower die assembly further includes a plurality of lower die adjusting shims provided on a side surface of the lower die fixing plate facing upward, the lower die adjusting shims being installed between the lower die fixing plate and the outer stripper plate, the lower die holder includes a lower die holder platen plate provided along a horizontal direction and a plurality of lower die holder support plates provided along a vertical direction extending in a vertical direction, the plurality of lower die holder support plates are fixedly connected to the upper position of the lower die holder platen, and top end portions of the plurality of lower die holder support plates are fixedly connected to the lower die holder platen by fasteners, and the plurality of nitrogen springs are installed on the lower die holder platen, and bottom end portions of the nitrogen springs are fixedly connected to the lower die holder platen by a plurality of fasteners.

In a further specific embodiment of the utility model, an upper die accommodating hole matched with the upper die in shape is formed in the center of the upper die positioning plate, the upper die is positioned and installed in the upper die accommodating hole, an upper die matching hole penetrating through the upper die in thickness direction is formed in the upper die, the upper die matching hole is matched with the inner discharging plate in shape, the inner discharging plate is matched and installed in the upper die matching hole and penetrates out of the upper die downwards, a plurality of upper die connecting screws extending upwards are further arranged on the upper die, the upper die connecting screws penetrate into the upper die fixing plate and are in threaded matching connection with screw holes correspondingly formed in the upper die fixing plate, so that the upper die is fixedly connected with the upper die fixing plate, and a die chamfering part is further formed at the axial edge position of the bottom end of the upper die matching hole of the upper die.

In a further specific embodiment of the utility model, the inner stripper plate further comprises an inner stripper plate body, a plurality of inner stripper plate body nail-ejecting grooves penetrating through the inner stripper plate body in the height direction are further formed in the inner stripper plate body, the bottom ends of the inner stripper plate body nail-ejecting grooves are communicated with the bottom surface of the inner stripper plate body, inner stripper plate screw plugs, inner stripper plate springs and inner stripper plate nails are sequentially arranged in the inner stripper plate body nail-ejecting grooves from top to bottom, the inner stripper plate screw plugs are arranged at the upper positions of the inner stripper plate body nail-ejecting grooves, the inner stripper plate springs are abutted under the inner stripper plate screw plugs, the inner stripper plate nails downwards penetrate out of the inner stripper plate body nail-ejecting grooves, and the inner stripper plate springs can apply downward force to the inner stripper plate nails, so that the inner stripper plate nails can downwards push down holes of products to be punched.

In a further specific embodiment of the utility model, the punching punch is in a cylindrical structure and passes through the inner unloading plate body to be in matched connection with the inner unloading plate body, and a punching punch connecting bolt is also arranged on the punching punch, passes through the punching punch in the height direction along the vertical direction and penetrates into the upper die backing plate to be in threaded matched connection with a screw hole correspondingly formed in the upper die backing plate, so that the punching punch and the upper die backing plate are fixedly connected.

In a further specific embodiment of the present utility model, a pair of product limiting plates arranged in a spaced state are arranged on the surface of the upper side of the outer discharge plate, a product positioning groove matched with the shape of the product to be punched is further formed between the two product limiting plates, and the product positioning groove is used for positioning the product to be punched and enabling the product to be punched to move in the product positioning groove; a lower punching propping piece is fixedly arranged on the outer stripper plate and corresponds to the product positioning groove, the lower punching propping piece is arranged at a lower position corresponding to the upper female die, a lower punching propping piece protruding tooth part is further convexly arranged on the surface of the upper side of the lower punching propping piece, the lower punching propping piece protruding tooth part corresponds to the upper female die protruding tooth part, the lower punching propping piece protruding tooth part is matched with the punching hole type peripheral shape of the product, and the lower punching propping piece protruding tooth part can be abutted to the position of the surface of the lower side of the product to be punched; the outer stripper plate is also provided with a plurality of outer stripper plate nail-ejecting grooves penetrating through the thickness direction of the plate body, the outer stripper plate nail-ejecting grooves are correspondingly arranged at the lower position of the product positioning groove, an outer stripper plate screw plug, an outer stripper plate spring and an outer stripper plate nail-ejecting groove are sequentially arranged in the outer stripper plate nail-ejecting groove from bottom to top, the outer stripper plate screw plug is arranged at the bottom position of the outer stripper plate nail-ejecting groove, the outer stripper plate spring is arranged above the outer stripper plate screw plug, the outer stripper plate nail upwards penetrates out of the outer stripper plate body nail-ejecting groove and is abutted to the lower surface of a product to be punched, the outer stripper plate spring can apply upward acting force to the outer stripper plate nail-ejecting groove, therefore, the outer stripper plate spring nails can push the product to be punched upwards.

In still another specific embodiment of the present utility model, the punch is provided with a punch base and a punch module formed on the punch base, wherein the punch base is fixedly installed at the central position of the upper surface of the lower die fixing plate, the punch module is arranged to extend upwards and pass through the outer stripper plate body and the lower punching pressing piece upwards, the shape of the punch module is the same as that of the inner stripper plate, the punch module is also provided with a punch hole penetrating through the punch module in the height direction, the shape of the punch hole is adapted to that of the punching punch, the punching punch can penetrate into the punch hole, and the punch hole can be matched with the punching punch and can allow punching scraps to fall down.

In a still more specific embodiment of the utility model, a plurality of positioning guide block fixing bolts are respectively arranged in a plurality of positioning guide blocks, the positioning guide block fixing bolts penetrate into the lower die carrier plate along the vertical direction in the height direction of the positioning guide blocks, the positioning guide block fixing bolts are in threaded fit connection with screw holes correspondingly formed in the lower die carrier plate, so that the positioning guide blocks are fixedly connected with the lower die carrier plate, a lower die pad plate yielding groove and a lower die fixing plate yielding groove are respectively formed in the circumferential edge positions of the lower die carrier plate and the lower die fixing plate, the shapes of the lower die pad plate yielding groove and the lower die fixing plate yielding groove are matched with the outer circumferential shape of the positioning guide block, the positioning guide block can be positioned at the circumferential edge positions of the lower die carrier plate and the lower die fixing plate, a positioning guide block top end fitting part is also convexly formed at the top end part of the positioning guide block, a discharging plate is also correspondingly provided with a positioning guide block top end fitting part, and a discharging plate is also formed at the circumferential edge position of the upper surface of the outer die carrier plate, so that the positioning guide plate is matched with the positioning guide plate and the positioning guide plate is connected with the outer positioning guide plate.

After the structure is adopted, the utility model has the beneficial effects that firstly, through the optimized structure, after the upper die assembly and the lower die assembly are closed, the product is tightly pressed at the bottom of the upper die by utilizing the outer stripper plate propped against the nitrogen spring, so that the product can be stamped to the upper die in a state that the male die and the inner stripper plate are clamped, thereby realizing the action of blanking and cutting the hole characteristics, achieving the small-gap blanking operation of thick plate products, ensuring that the blanking gap between the upper die and the male die is about the thickness of the plate to be stamped, keeping the stamping plate vertical to the stamping direction all the time, reducing the bending deformation of a deformation zone and ensuring that the tensile stress is not generated, further ensuring that the blanking product cannot generate bending deformation, improving the working efficiency and the product quality of the stamping operation, enabling the product to be formed at one time and having high qualification rate, reducing the processing procedure, finally achieving the high smoothness of the shearing surface of the blanking through hole, and ensuring that the defect such as a fracture layer is avoided; secondly, by arranging the upper concave die protruding tooth part on the upper concave die and arranging the lower punching propping piece on the outer stripper, arranging the lower punching propping piece protruding tooth part on the lower punching propping piece, the upper concave die protruding tooth part and the lower punching propping piece protruding tooth part can respectively abut against the upper side and the lower side of the circumferential edge part of a hole pattern to be punched of a product and apply gear ring pressure, thereby effectively compacting materials and isolating a shearing area, further guaranteeing the stability of small-gap punching operation, guaranteeing the reliability and the smoothness of a shearing surface of the punching operation, simultaneously realizing high-efficiency stable punching operation by the cooperation of the punching pressure of a punching punch, the gear ring pressure of the upper concave die protruding tooth part and the lower punching propping piece protruding tooth part and the counter-jacking pressure of the inner stripper plate, ensuring the processing precision, the structure of the utility model can realize high-efficiency accurate guiding and positioning effects on the movement of an upper die assembly, a lower die assembly and an outer stripper plate by additionally arranging a positioning guide block and an inner guide pillar, realize multiple guiding and positioning by coacting with a cylindrical sleeve type guide mechanism, ensure high precision and superior operation reliability of stamping operation and also ensure realization of small-gap blanking, and fourth, can reduce stress concentration of an upper die cutting edge in the stamping process by arranging a round die cutting edge chamfering part at the bottom stamping cutting edge of the upper die, ensure the working reliability of the upper die, be suitable for thick plate blanking and use, improve the service life of the upper die and reduce the maintenance cost.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present utility model;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a plan cross-sectional view of the embodiment shown in FIG. 1;

fig. 4 is a schematic perspective view of the outer stripper plate, the product, the upper die and the inner stripper plate in the embodiment shown in fig. 1.

In the drawing, 1, an upper die assembly, 11, an upper die holder, 111, an upper die holder platform plate, 112, an upper die holder support plate, 113, an upper die holder buffer limit plate, 12, an upper die holder plate, 13, an upper die base plate, 14, an upper die fixing plate, 15, an upper die positioning plate and 151, an upper die accommodating hole; the lower die comprises a lower die assembly, a lower die base platform plate, a lower die base supporting plate, a lower die base plate and a lower die base plate, wherein the lower die base plate comprises a lower die base plate yielding groove, a lower die fixing plate and a lower die fixing plate yielding groove, a nitrogen spring and a lower die adjusting gasket, and the lower die fixing plate comprises a lower die fixing plate, a lower die fixing plate yielding groove, a lower die fixing plate and a lower die adjusting gasket, and the lower die fixing plate is arranged on the lower die base plate. Column sleeve type guide mechanism 31, outer guide column 32, outer guide sleeve 4, outer stripper 41, product limiting plate 42, product positioning slot 43, lower punch top press, 431, lower punch top press tooth portion 44, outer stripper nail slot 45, outer stripper screw plug 46, outer stripper spring 47, outer stripper nail 48, outer stripper stepped slot 5, upper die tooth portion 52, upper die mating hole 53, upper die connecting screw 54, upper die cutting edge chamfer portion 6, male die base 61, 62, male die block 621, male die hole 7, inner stripper plate, 71, inner stripper plate limiting column 72, inner stripper plate body 721, inner stripper plate body nail slot 73, inner stripper plate screw plug 74, inner stripper plate spring 75, inner stripper plate nail spring 8, punch pin 81, punch pin connection 9, guide block 91, guide block 92, guide block 10, guide block 20, guide block 201.

Detailed Description

The following detailed description of the embodiments is, therefore, not to be taken in a limiting sense, and any equivalents, which are merely in form and not in nature, are contemplated as falling within the scope of the present utility model.

In the following description, any terms related to the directions or azimuths of up, down, left, right, front and rear are all related to the current position state of fig. 1, and thus should not be construed as a specific limitation on the technical solution provided by the present utility model.

Referring to fig. 1 to 4, there is shown a thick plate precision stamping die, comprising an upper die assembly 1 and a lower die assembly 2, wherein the upper die assembly 1 and the lower die assembly 2 are arranged up and down oppositely and can be relatively close to and relatively far away from each other, the upper die assembly 1 comprises an upper die holder 11, an upper die holder plate 12, an upper die pad plate 13, an upper die fixing plate 14 and an upper die positioning plate 15 which are fixedly installed together from top to bottom, the upper die holder 11 is connected with an external power source and can longitudinally reciprocate under the drive of the upper die holder 11 so as to realize the movement of the upper die assembly 1, the lower die assembly 2 comprises a lower die holder 21, a lower die holder plate 22, a lower die pad plate 23 and a lower die fixing plate 24 which are fixedly installed together from bottom to top, and the lower die holder 1 is fixedly installed on a machine tool; the upper die frame plate 12 and the lower die frame plate 22 are connected in a sliding manner, in the embodiment, the number of the column sleeve type guide mechanisms 3 is four and the column sleeve type guide mechanisms 3 are arranged at the corners around the lower die frame plate 22 in a rectangular manner, an outer stripper plate 4 is movably connected above the lower die fixing plate 24 and positioned at the lower position of the upper die assembly 1, the outer stripper plate 4 can realize bearing and positioning of a product to be punched, a plurality of nitrogen springs 25 are also arranged on the lower die base 21, the nitrogen springs 25 sequentially penetrate through the lower die frame plate 22, the lower die base plate 23 and the lower die fixing plate 24 and are propped against the bottom of the outer stripper plate 4, the nitrogen springs 25 have excellent stability and long service life, under the condition of high-speed movement or severe vibration, the nitrogen spring 25 can adjust the air pressure to keep the stability of acting force on the outer stripper plate 4, large errors can not be generated due to the change of factors such as temperature, load and the like, the problems of solid contact and abrasion caused by friction can not exist like a mechanical spring, the nitrogen spring 25 is more durable, the outer stripper plate 4 can reliably and tightly abut against a product at the lower position of the upper die assembly 1 during punching operation, and the punching forming of hole characteristics can be performed on the product by guaranteeing that each acting force can be stably acted on the product, so that the punching working quality is improved.

The thick plate precision stamping die further comprises an upper female die 5, wherein the upper female die 5 is positioned at the center of the upper female die positioning plate 15 and is connected to the lower position of the upper die fixing plate 14, and an upper female die protruding tooth part 51 which is matched with the peripheral shape of a hole pattern to be punched of a product is formed on the surface of one side of the upper female die 5 facing downwards; the upper die plate (4) comprises an upper die plate (5) and a lower die plate (24), a male die (6) correspondingly arranged below the upper die plate (5), the male die (6) is fixedly arranged at the central position of the upper surface of the lower die plate (24) and passes through the upper outer stripper plate (4), an inner stripper plate (7) which is penetrated into the upper die plate (5) and is correspondingly arranged with the male die (6), a punching punch (8) for punching a product and is connected at the lower position of the upper die plate (13), the punching punch (8) is penetrated into the inner stripper plate (7) and the bottom end part of the punching punch is protruded out of the inner stripper plate (7), a plurality of positioning guide blocks (9) are fixedly connected on the upper surface of the lower die plate (22) and are positioned at the peripheral edge part of the lower die plate (23) and the lower die plate (24), the top end parts of the positioning guide blocks (9) can realize sliding fit with the outer stripper plate (4) and accurately position the movement of the outer stripper plate (4), the rectangular positioning guide blocks (9) are penetrated into the lower die plate (22) from the upper die plate (22) and pass through the lower die plate (22) in sequence from the upper die plate (22) and the lower die plate (22) in sequence, the lower die plate (22) are positioned and are sequentially arranged on the lower die plate (22) and are penetrated into the lower die plate (10), so that the upper die positioning plate 15 is slidably coupled to the aforementioned lower die fixing plate 24.

According to the technical scheme, the whole structure is optimized, products are pressed at the bottom of the upper die 5 by the outer stripper plate 4 propped against the nitrogen spring 25 after the upper die assembly 1 and the lower die assembly 2 are closed, the products can be punched to the upper die 5 under the clamping state of the male die 6 and the inner stripper plate 7, small-gap punching operation of thick plate products is achieved, the transverse punching gap between the upper die 5 and the male die 6 is about 0.5% of the thickness of the plate to be punched, the punched plate can be always kept perpendicular to the punching direction in the punching process, the reason that the size of the gap and the uniformity of the gap along the periphery of a cutting edge can directly influence the quality of a punched part in the process of punching the small-gap is that once the gap between the upper die 5 and the male die 6 is too large, the material in a deformation area is subjected to a large stretching effect and simultaneously generates tensile stress, and the tensile stress is just the reason that the micro-crack and tearing are induced, therefore the bending deformation of the deformation area is reduced and the effect of the tensile stress is guaranteed not to be generated in the process of punching operation of the small-gap is achieved, and the bending deformation of the punched product is reduced, and the precision and the punching reliability of the punching operation are improved.

It should be noted that, compared with the prior art that only the guide module corresponding to the column sleeve type guide mechanism 3 of the present utility model is disposed between the upper and lower dies, the technical scheme provided by the present utility model further adds a plurality of positioning guide blocks 9 and inner guide columns 10, the inner guide columns 10 can ensure the movement guidance between the lower die pad plate 23, the lower die fixing plate 24 and the outer stripper plate 4, and between the upper die fixing plate 14 and the upper die locating plate 15, and the positioning guide blocks 9 can ensure the precise positioning of the upward movement of the outer stripper plate 4, prevent the movement of the outer stripper plate 4 from shifting due to the lateral force generated in the stamping process, thereby realizing multiple guiding positioning, ensuring the high precision and superior operation reliability of the stamping operation, and further ensuring the realization of small gap blanking.

With continued reference to fig. 1 and 2, the column sleeve type guiding mechanism 3 includes an outer guiding column 31 extending in a vertical direction and an outer guiding sleeve 32 disposed below the outer guiding column 31, the top end of the outer guiding column 31 is fixedly connected to the upper die frame plate 12, the outer guiding sleeve 32 is fixedly connected to the lower die frame plate 22 and the outer guiding sleeve 32 is adapted to the outer guiding column 31, the outer guiding column 31 can penetrate the outer guiding sleeve 32 and is slidably engaged with the outer guiding sleeve, so that the upper die frame plate 12 and the lower die frame plate 22 are slidably connected in a positioning manner, and the outer guiding column 31 can reciprocate in the outer guiding sleeve 32 during the vertical lifting movement of the upper die assembly 1, so as to guide the movement of the upper die assembly 1.

In this embodiment, the upper die holder 11 includes an upper die holder platen 111 disposed along a horizontal direction and a plurality of upper die holder support plates 112 extending in a vertical state, the plurality of upper die holder support plates 112 are fixedly connected to the lower position of the upper die holder platen 111, bottom ends of the plurality of upper die holder support plates 112 are fixedly connected to the upper die holder plate 12 through fasteners, the upper die holder 11 further includes an upper die holder buffer limiting plate 113 connected to the lower position of the upper die holder platen 111, the upper die holder buffer limiting plate 113 is disposed corresponding to the inner die holder plate 7 and corresponds to the upper position of the inner die holder plate 7, the plurality of inner die holder plate limiting posts 71 are connected to the inner die holder plate 7, the plurality of inner die holder plate limiting posts 71 sequentially pass through the upper die fixing plate 14, the upper die pad plate 13 and the upper die holder plate 12 from bottom to top along the vertical direction, and top ends of the inner die holder plate limiting posts 71 can be connected to the upper die holder buffer limiting plate 113, so that the upper die holder buffer limiting plate 113 can be abutted against the upper die holder buffer limiting plate 113.

Further, the lower die assembly 2 further comprises a plurality of lower die adjusting gaskets 26 arranged on the surface of the upper side of the lower die fixing plate 24, the lower die adjusting gaskets 26 are installed between the lower die fixing plate 24 and the outer discharging plate 4, the male dies 6 penetrate through the lower die adjusting gaskets 26, the lower die adjusting gaskets 26 can protect the male dies 6 during die verification, the whole lower die assembly 2 can be guaranteed to be in a pressed state, the upper female die protruding tooth parts 51 can be pressed to a preset depth of a product to be punched, the lower die 21 comprises a lower die base flat platen 211 arranged along the horizontal direction and a plurality of lower die base supporting plates 212 extending along the vertical direction, the plurality of lower die base supporting plates 212 are fixedly connected at the upper position of the lower die base flat platen 211, the top end parts of the plurality of lower die base 212 are fixedly connected with the lower die base plate 22 through fasteners, the plurality of nitrogen springs 25 are installed on the lower die base flat platen 211, and the bottom end parts of the nitrogen springs 25 are fixedly connected with the lower die base supporting plates 211 through the plurality of die base supporting plates 211.

In this embodiment, an upper die receiving hole 151 adapted to the shape of the upper die 5 is formed in the center of the upper die positioning plate 15, the upper die 5 is positioned in the upper die receiving hole 151, an upper die mating hole 52 penetrating through the upper die 5 in the thickness direction is formed in the upper die 5, the upper die mating hole 52 is adapted to the shape of the inner die mating hole 52, the inner die plate 7 is mounted in the upper die mating hole 52 in a mating manner and penetrates out of the upper die 5 downwards, a plurality of upper die connecting screws 53 extending upwards are further arranged on the upper die 5, and the upper die connecting screws 53 penetrate into the upper die fixing plate 14 and are in threaded mating connection with screw holes correspondingly formed in the upper die fixing plate 14, so that the upper die 5 is fixedly connected with the upper die fixing plate 14, and a chamfer 54 is formed at the circumferential edge of the bottom end of the upper die mating hole 52 of the upper die 5, namely, so that the chamfer edge 54 of the upper die 5 can be raised in a working life, and the working life of the chamfer is reduced.

Referring to fig. 2 and 3 and referring to fig. 4 again, the inner stripper plate 7 further includes an inner stripper plate body 72, a plurality of inner stripper plate body spring nail grooves 721 penetrating through the inner stripper plate body 72 in the height direction are further formed in the inner stripper plate body 72, bottom ends of the inner stripper plate body spring nail grooves 721 are communicated with the bottom surface of the inner stripper plate body 72, inner stripper plate screw plugs 73, inner stripper plate springs 74 and inner stripper plate spring nails 75 are sequentially disposed in the inner stripper plate body spring nail grooves 721 from top to bottom, the inner stripper plate screw plugs 73 are mounted at upper positions of the inner stripper plate body spring nail grooves 721, the inner stripper plate springs 74 abut against the lower sides of the inner stripper plate screw plugs 73, the inner stripper plate spring nails 75 penetrate the inner stripper plate body spring nail grooves 721 downward, and the inner stripper plate spring nails 74 can apply downward force to the inner stripper plate spring nails 75, so that the inner stripper plate spring nails 75 can push down punched products.

In this embodiment, the punching punch 8 is in a cylindrical structure, and the punching punch 8 passes through the inner stripper plate body 72 to be connected therewith, and a punching punch connecting bolt 81 is further disposed on the punching punch 8, the punching punch connecting bolt 81 passes through the height direction of the punching punch 8 along the vertical direction, and the punching punch connecting bolt 81 penetrates into the upper die pad 13 and is connected with a screw hole correspondingly formed on the upper die pad 13 in a threaded fit manner, so that the punching punch 8 and the upper die pad 13 are fixedly connected.

Further, a pair of product limiting plates 41 arranged at intervals are arranged on the surface of the upper side of the outer discharging plate 4, a product positioning groove 42 matched with the shape of the product to be punched is formed between the two product limiting plates 41, and the product positioning groove 42 is used for positioning the product to be punched and enabling the product to be punched to move in the product positioning groove; a lower punch press 43 is fixedly installed in the outer stripper plate 4 and corresponding to the product positioning groove 42, the lower punch press 43 is arranged at a lower position corresponding to the upper die 5, a lower punch press protruding tooth portion 431 is also convexly arranged on the upper side surface of the lower punch press 43, the lower punch press protruding tooth portion 431 corresponds to the upper die protruding tooth portion 51 and is matched with the outer peripheral shape of a hole to be punched of a product, the lower punch press protruding tooth portion 431 can be abutted to the lower side surface position of the product to be punched, when the punching operation is performed, after the upper die assembly 1 and the lower die assembly 2 are closed, the upper die protruding tooth portion 51 and the lower punch press protruding tooth portion 431 can be respectively abutted to the upper side and the lower side of the peripheral edge position of the product to be punched, the upper die protruding tooth portion 51 and the lower punch press protruding tooth portion 431 can apply gear ring pressure to the product, the pressure and ensure the quality, the high-efficiency nail-punching effect is achieved by punching the outer peripheral shape of the product, the punch press plate 44 is stably punched by the plurality of the outer stripper plate positioning grooves 44 corresponding to the outer stripper plate positioning groove 42, the outer stripper screw 45, the outer stripper spring 46 and the outer stripper screw 47 are sequentially disposed in the outer stripper screw groove 44 from bottom to top, the outer stripper screw 45 is mounted at the bottom of the outer stripper screw groove 44, the outer stripper spring 46 is disposed above the outer stripper screw groove 45, the outer stripper screw 47 penetrates the outer stripper screw groove 44 upward and abuts against the lower surface of the product to be punched, and the outer stripper spring 46 can apply an upward force to the outer stripper screw 47, so that the outer stripper screw 47 can slightly jack up the product to be punched upward.

Referring to fig. 2, the male die 6 has a male die base 61 and a male die block 62 formed on the male die base 61, wherein the male die base 61 is fixedly installed at a central position of an upper surface of the lower die fixing plate 24, the male die block 62 extends upward and passes through the plate body of the outer stripper plate 4 and the lower punch press 43, the shape of the male die block 62 is the same as that of the inner stripper plate 7, a male die hole 621 penetrating through the female die block 62 in a height direction is further formed on the female die block 62, the shape of the male die hole 621 is adapted to that of the punch 8, and the punch 8 can penetrate into the male die hole 621, and the male die hole 621 can be used for passing punching scraps.

Further, a plurality of positioning guide block fixing bolts 91 are respectively arranged in the plurality of positioning guide blocks 9, the plurality of positioning guide block fixing bolts 91 penetrate through the height direction of the positioning guide blocks 9 along the vertical direction and into the lower die carrier plate 22, and the plurality of positioning guide block fixing bolts 91 are in threaded fit connection with screw holes correspondingly formed in the lower die carrier plate 22, so that the positioning guide blocks 9 are fixedly connected with the lower die carrier plate 22; the lower die pad plate yielding groove 231 and the lower die fixing plate yielding groove 241 are respectively formed at the circumferential edge positions of the lower die pad plate 23 and the lower die fixing plate 24, the shapes of the lower die pad plate yielding groove 231 and the lower die fixing plate yielding groove 241 are matched with the outer circumferential shape of the positioning guide block 9, so that the positioning guide block 9 can be positioned and arranged at the circumferential edge positions of the lower die pad plate 23 and the lower die fixing plate 24, a positioning guide block top end matching part 92 is also convexly formed at the top end part of the positioning guide block 9, an outer stripper plate step groove 48 is correspondingly formed at the circumferential edge of the upper surface of the outer stripper plate 4, the positioning guide block top end matching part 92 can be matched and connected in the outer stripper plate step groove 48 and slide in the outer stripper plate step groove, positioning guide of the positioning guide block 9 is realized, the positioning guide block 9 can be matched and connected with the outer stripper plate step groove 48 through the positioning guide block top end matching part 92, the positioning guide block 9 and the lower die pad plate 24 can be prevented from being offset in the stamping process of the lower die pad plate 24 and the lower die pad plate 24 due to the fact that the positioning guide plate is offset in the die pad plate 24 is prevented from being positioned and fixed in the side direction, the positioning guide block 9 and the inner guide post 10 can also realize reliable guide to the upper die assembly 1, the lower die assembly 2 and the outer stripper plate 4 under the condition of long-time working, so that the precision and the reliability of long-time working are ensured.

Referring to fig. 1 to 4, the present inventors briefly describe the working principle of the technical solution provided by the present utility model, and also show a thick plate type product 20 in fig. 2, 3 and 4, and also show a plurality of product inner holes 201 on the product 20 after punching; in the process of punching and cutting the inner hole 201 of the product, the upper die assembly 1 is controlled by an external power source to perform an ascending motion, so that the upper die assembly 1 and the lower die assembly 2 are relatively far away from each other to achieve opening and closing of the die, then the product 20 is conveyed into the product positioning groove 42 of the outer stripper plate 4, then the upper die assembly 1 is subjected to a descending motion, so that the upper die assembly 1 and the lower die assembly 2 are relatively close to each other to achieve closing of the die, at the moment, the outer stripper plate 4 presses the raw material upwards under the upper die 5 with the upper die protruding teeth 51 under the action of the nitrogen spring 25, the outer stripper plate elastic nails 47 further push the product 20 upwards, and at the same time, the inner stripper plate 7 applies a counter-pushing force to the product 20, simultaneously, the upper female die protruding tooth part 51 and the lower punching pressing piece protruding tooth part 431 can apply circumferential gear ring pressure of an inner hole to be punched to the product 20, the product 20 is punched on the upper female die 5 under the state of being clamped by the male die 6 and the inner discharging plate 7, the inner hole waste is punched into the male die hole 621 of the male die 6 under the acting force of the punching punch 8, then the upper die assembly 1 is moved upwards to open a die, the gear ring pressure of the upper female die protruding tooth part 51 is used as discharging force to discharge scrap of the lapping of the inner hole 201 of the product at the moment, the counter-pressing force on the inner discharging plate 7 is used as ejecting force to eject the product 20 from the upper female die 5 at the moment, the punching action is completed, the reciprocating action is realized by feeding again, the efficient and reliable small-gap punching action on the product 20 is achieved, simultaneously, the stamping force, the gear ring pressure and the counter-pressing force can be matched together to act on the product 20, so that bending deformation of a thick plate type product is effectively reduced, the high smoothness of a shearing surface of stamping forming can be ensured, the defects of a fracture layer and the like are avoided, the product quality is ensured, and meanwhile, the production efficiency is also effectively improved.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

In summary, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the task of the utility model, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims (10)

1. A thick plate precision stamping processing die is characterized by comprising an upper die assembly (1) and a lower die assembly (2), wherein the upper die assembly (1) and the lower die assembly (2) are arranged up and down oppositely and can be relatively close to and relatively far away from each other, the upper die assembly (1) comprises an upper die holder (11), an upper die holder plate (12), an upper die pad plate (13), an upper die fixing plate (14) and an upper die locating plate (15) which are sequentially and fixedly arranged together from top to bottom, and the lower die assembly (2) comprises a lower die holder (21), a lower die holder plate (22) and a lower die plate (15) which are sequentially and fixedly arranged together from bottom to top, The die comprises an upper die support plate (12), a lower die support plate (23), a lower die fixing plate (24), a plurality of column sleeve type guide mechanisms (3), an outer stripper plate (4) and a plurality of nitrogen springs (25), wherein the column sleeve type guide mechanisms (3) are arranged between the upper die support plate (12) and the lower die support plate (22) and are in sliding connection with each other, the outer stripper plate (4) is movably connected to the upper part of the lower die fixing plate (24) and is positioned below the upper die assembly (1), the outer stripper plate (4) can realize bearing and positioning of a product to be punched, the lower die base (21) is also provided with the plurality of nitrogen springs (25), and the plurality of nitrogen springs (25) sequentially penetrate through the lower die support plate (22), A lower die cushion plate (23) and a lower die fixing plate (24) which are propped against the bottom of the outer stripper plate (4), an upper die (5) which is arranged at the central position of the upper die locating plate (15) and is connected at the lower position of the upper die fixing plate (14), an upper die tooth part (51) which is matched with the outer peripheral shape of a punching inner hole of a product is formed on one side surface of the upper die (5) facing downwards, a male die (6) which is correspondingly arranged at the lower position of the upper die (5) and is fixedly arranged at the central position of the upper surface of the lower die fixing plate (24) and passes through the outer stripper plate (4), an inner stripper plate (7) which is arranged in the upper die (5) in a penetrating way and is correspondingly arranged with the male die (6), a punch (8) which is used for punching the product and is connected at the lower position of the upper die cushion plate (5) and is arranged at the lower position of the punch (7) and is arranged at the lower end part of the punch (9) which is fixedly arranged at the inner stripper plate (7), a plurality of positioning guide blocks (9) are fixedly connected on the upper surface of the lower die frame plate (22) and positioned at the circumferential edge positions of the lower die base plate (23) and the lower die fixing plate (24), and the top end parts of the positioning guide blocks (9) can realize sliding fit with the outer stripper plate (4) and accurately position the outer stripper plate (4), a plurality of inner guide posts (10) are positioned on the lower die frame plate (22) and sequentially penetrate through the lower die base plate (23), the lower die base plate (23) from bottom to top, The lower die fixing plate (24) and the outer discharging plate (4) can penetrate into the upper die locating plate (15) to be in sliding connection with the upper die locating plate, so that the upper die locating plate (15) and the lower die fixing plate (24) are in sliding connection.

2. The thick plate precision stamping die as claimed in claim 1, wherein the column sleeve type guide mechanism (3) is provided with an outer guide column (31) extending along the vertical direction and an outer guide sleeve (32) arranged below the outer guide column (31), the top end part of the outer guide column (31) is fixedly connected to the upper die frame plate (12), the outer guide sleeve (32) is fixedly connected to the lower die frame plate (22) and is matched with the outer guide column (31), and the outer guide column (31) can penetrate the outer guide sleeve (32) and realize sliding fit with the outer guide column, so that the upper die frame plate (12) and the lower die frame plate (22) are in positioning sliding connection.

3. The thick plate precision stamping die as claimed in claim 2, wherein the upper die holder (11) comprises an upper die holder platform plate (111) arranged along the horizontal direction and a plurality of upper die holder supporting plates (112) extending in a vertical state, the upper die holder supporting plates (112) are fixedly connected with the lower positions of the upper die holder platform plate (111), bottom end parts of the upper die holder supporting plates (112) are fixedly connected with the upper die holder plate (12) through fasteners, the upper die holder (11) further comprises an upper die holder buffer limiting plate (113) connected with the lower positions of the upper die holder platform plate (111), the upper die holder buffer limiting plate (113) is arranged corresponding to the inner die unloading plate (7) and corresponds to the upper positions of the inner die unloading plate (7), the inner die unloading plate limiting posts (71) are further connected with the inner die unloading plate (7), and the inner die unloading plate limiting plates (71) sequentially penetrate through the upper die holder plate (14) from the lower positions of the upper die holder plate (12) along the vertical direction, and the upper die holder limiting plate (13) can abut against the upper die holder limiting plate (13).

4. The thick plate precision stamping die as claimed in claim 1, wherein the lower die assembly (2) further comprises a plurality of lower die adjusting gaskets (26) arranged on one side surface of the lower die fixing plate (24) facing upwards, the lower die adjusting gaskets (26) are arranged between the lower die fixing plate (24) and the outer discharging plate (4), the lower die base (21) comprises a lower die base flat platen (211) arranged along the horizontal direction and a plurality of lower die base supporting plates (212) extending along the vertical direction, the plurality of lower die base supporting plates (212) are fixedly connected at the upper position of the lower die base flat platen (211), the top end parts of the plurality of lower die base supporting plates (212) are fixedly connected with the lower die base plate (22) through fasteners, and the plurality of nitrogen springs (25) are arranged on the lower die base (211) and the bottom end parts of the nitrogen springs (25) are fixedly connected with the lower die base flat platen (211) through a plurality of fasteners.

5. A thick plate precision stamping processing mold according to claim 1 is characterized in that an upper female die accommodating hole (151) matched with the upper female die (5) in shape is formed in the center of the upper female die positioning plate (15), the upper female die (5) is positioned and installed in the upper female die accommodating hole (151), an upper female die matching hole (52) penetrating through the upper female die (5) in the thickness direction is formed in the upper female die (5), the upper female die matching hole (52) is matched with the inner discharging plate (7) in shape, the inner discharging plate (7) is matched and installed in the upper female die matching hole (52) and penetrates out of the upper female die (5) downwards, a plurality of upper female die connecting screws (53) extending upwards are further matched on the upper female die (5), the upper female die connecting screws (53) penetrate into the upper die fixing plate (14) and are correspondingly formed on the upper die fixing plate (14) to realize threaded matching connection, and accordingly the upper female die connecting plate (5) is fixedly connected with a cutting edge (52) on an upper female die ring in a position (14) in a matched mode.

6. The thick plate precision stamping die as claimed in claim 1, wherein the inner stripper plate (7) further comprises an inner stripper plate body (72), a plurality of inner stripper plate body nail-ejecting grooves (721) penetrating through the inner stripper plate body (72) in the height direction are formed in the inner stripper plate body (72), the bottom ends of the inner stripper plate body nail-ejecting grooves (721) are communicated with the bottom surface of the inner stripper plate body (72), inner stripper plate screw plugs (73), inner stripper plate springs (74) and inner stripper plate nail-ejecting nails (75) are sequentially arranged in the inner stripper plate body nail-ejecting grooves (721) from top to bottom, the inner stripper plate screw plugs (73) are arranged at the upper positions of the inner stripper plate body nail-ejecting grooves (721), the inner stripper plate springs (74) are abutted under the inner stripper plate body nail-ejecting grooves (73), the inner stripper plate nail nails (75) downwards penetrate through the inner stripper plate nail-ejecting grooves (721), and the inner stripper plate nail-ejecting springs (74) can apply downward punching force to the inner stripper plate nail-ejecting nails (75) to punch products.

7. The thick plate precision stamping die as claimed in claim 6, wherein the punching punch (8) is of a cylindrical structure, the punching punch (8) penetrates through the inner unloading plate body (72) and is in matched connection with the inner unloading plate body, a punching punch connecting bolt (81) is further arranged on the punching punch (8), the punching punch connecting bolt (81) penetrates through the punching punch (8) in the vertical direction, and the punching punch connecting bolt (81) penetrates into the upper die cushion plate (13) and is in threaded matched connection with a screw hole correspondingly formed in the upper die cushion plate (13), so that the punching punch (8) is fixedly connected with the upper die cushion plate (13).

8. The precision stamping die for thick plates according to claim 1, characterized in that a pair of product limiting plates (41) are arranged on the upward facing side surface of the outer stripper plate (4) in a spaced state, a product positioning groove (42) matched with the shape of the product to be stamped is formed between the two product limiting plates (41), the product positioning groove (42) is used for positioning the product to be stamped and moving the product to be stamped therein, a lower punch pressing member (43) is fixedly arranged on the outer stripper plate (4) and corresponding to the product positioning groove (42), the lower punch pressing member (43) is arranged at a lower position corresponding to the upper die (5), a lower punch pressing member protruding tooth part (431) is also convexly arranged on the upward facing side surface of the lower punch pressing member (43), the lower punch pressing member protruding tooth part (431) corresponds to the upper die protruding tooth part (51) and is matched with the outer circumferential shape of the inner hole of the product to be stamped, a plurality of pins (431) are arranged on the outer stripper plate (4) and the upper punch pressing member protruding tooth part (44) is arranged at a plurality of positions corresponding to the upper punch pressing plate (44) and the outer stripper plate (44) is positioned at a plurality of positions corresponding to the upper punch pressing plate, the outer stripper plate spring nail groove (44) is internally provided with an outer stripper plate screw plug (45), an outer stripper plate spring (46) and an outer stripper plate spring nail (47) from bottom to top in sequence, the outer stripper plate screw plug (45) is arranged at the bottom position of the outer stripper plate spring nail groove (44), the outer stripper plate spring (46) is arranged above the outer stripper plate screw plug (45), the outer stripper plate spring nail (47) upwards penetrates out of the outer stripper plate body spring nail groove (44) and is abutted to the lower surface of a product to be punched, and the outer stripper plate spring (46) can apply upward acting force to the outer stripper plate spring nail (47), so that the outer stripper plate spring nail (47) can upwards push the product to be punched.

9. The thick plate precision stamping die as claimed in claim 8, wherein the punch (6) is provided with a punch base (61) and a punch block (62) formed on the punch base (61), wherein the punch base (61) is fixedly arranged at the central position of the upper surface of the lower die fixing plate (24), the punch block (62) extends upwards and passes through the outer stripper plate (4) plate body and the lower punch pressing piece (43), the shape of the punch block (62) is the same as that of the inner stripper plate (7), a punch hole (621) penetrating through the punch block (62) in the height direction is formed, the shape of the punch hole (621) is matched with that of the punch (8), and the punch (8) can penetrate into the punch hole (621).

10. The thick plate precision stamping die as claimed in claim 1, wherein a plurality of positioning guide block fixing bolts (91) are respectively arranged in a plurality of positioning guide blocks (9), the plurality of positioning guide block fixing bolts (91) penetrate through the height direction of the positioning guide blocks (9) along the vertical direction and into the lower die carrier plate (22), the plurality of positioning guide block fixing bolts (91) are in threaded fit connection with screw holes correspondingly formed in the lower die carrier plate (22), so that the positioning guide blocks (9) are fixedly connected with the lower die carrier plate (22), a lower die pad plate yielding groove (231) and a lower die fixing plate yielding groove (241) are respectively formed in the circumferential edge positions of the lower die pad plate (23) and the lower die fixing plate (24), the shapes of the lower die pad plate yielding groove (231) and the lower die fixing plate yielding groove (241) are matched with the outer circumferential shape of the positioning guide blocks (9), the positioning guide blocks (9) can be fixedly connected with the lower die carrier plate (22) through screw holes correspondingly formed in the corresponding manners, the top end portions of the discharging guide blocks (4) are correspondingly formed at the circumferential edge positions of the upper die pad plate (24) and the top end portions (48), the top end matching part (92) of the positioning guide block can be matched and connected in the step groove (48) of the outer stripper plate, so that the positioning guide of the positioning guide block (9) to the outer stripper plate (4) is realized.