Buffer type positioning stamping die

Abstract

The utility model discloses a buffering type positioning stamping die, which relates to the technical field of dies and comprises an upper die holder and a lower die holder which are matched in a butt joint mode, an upper die plate and a lower die plate are respectively connected between the butt joint of the upper die holder and the lower die holder, the lower end face of the upper die plate is provided with a stamping head, the upper end face of the lower die plate is connected with a stamping seat, and the stamping seat is provided with a stamping groove. The stamping base is provided with a stamping hole site corresponding to the stamping head, a stamping plate is arranged over the lower die plate, the stamping plate and the lower die plate are connected through an elastic assembly, a sliding opening corresponding to the stamping base is formed in the center of the stamping plate, and the stamping plate can slide relative to the stamping base through the sliding opening. The multiple elastic assemblies are located at the positions of the four corners between the stamping plate and the lower die plate. The upper end face of the stamping plate is higher than the upper end face of the stamping base under the supporting effect of the elastic assembly. The die is reasonable in structural design and accurate in positioning and has a buffering function.

Description

TECHNICAL FIELD

[0001] The utility model relates to die technical field, concretely is a kind of buffer formula positioning's stamping die. BACKGROUND

[0002] In modern manufacturing industry, stamping process is widely used in the forming of various metal and non-metal parts. When the traditional stamping die is operated, it often faces many problems. On the one hand, the positioning accuracy of the die is difficult to effectively guarantee. When the product to be stamped is placed in the die, due to the lack of accurate and stable positioning structure, the product is prone to positional deviation, which directly leads to uneven product quality after stamping, high scrap rate, and seriously affects production efficiency and enterprise economic benefit. For example, in the stamping production of some precision electronic components, a small positional deviation may make the product unable to meet the strict assembly requirements, resulting in a lot of waste.

[0003] On the other hand, the impact force in the stamping process is large and lacks effective buffering. When the die is stamped, the upper die holder drives the stamping head to hit the product and the stamping seat on the lower die plate at high speed. This rigid impact not only causes great wear to the die itself, shortens the service life of the die, increases the maintenance cost and replacement frequency of the die, but also may cause damage to the product due to uneven impact force transmission, such as cracks, deformation and other defects on the surface of the product, further reducing the pass rate of the product.

[0004] Therefore, it is necessary to propose an improved technical solution to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a technical solution to solve the above problems.

[0006] A kind of buffer formula positioning's stamping die, including the upper die holder and lower die holder of butt joint cooperation, the butt joint between the upper die holder and lower die holder is respectively connected with upper die plate and lower die plate, the lower end surface of the upper die plate is provided with stamping head, the upper end surface of the lower die plate is connected with stamping seat, the stamping seat is provided with the stamping hole position corresponding to stamping head, the upper of the lower die plate is provided with stamping plate, the stamping plate and lower die plate are connected by elastic component, the central position of the stamping plate is provided with the sliding port corresponding to stamping seat, the stamping plate can slide relative to stamping seat by sliding port, the elastic component is provided with multiple, multiple the elastic component is located between the four corner positions of stamping plate and lower die plate;

[0007] The upper end surface of the stamping plate is higher than the upper end surface of the stamping seat under the support of the elastic component, wherein the upper end surface of the stamping plate and the circumferential side of the sliding port are provided with a plurality of positioning blocks, a plurality of positioning blocks are provided to form a positioning groove for the product, and the stamping hole position is located in the positioning groove.

[0008] As a further scheme of the present application, the height of the positioning block is higher than the difference between the maximum downward stroke in the stamping process of the stamping plate and the product thickness.

[0009] As a further scheme of the present application, the inner surface of the positioning block has a guide structure, which is an inner concave arc surface arranged along the height direction of the positioning block.

[0010] As a further scheme of the present application, the surface of the positioning block is coated with a friction-reducing coating, which is a polytetrafluoroethylene coating or a molybdenum disulfide coating.

[0011] As a further scheme of the present application, the elastic assembly includes a guide column fixed on the lower die seat and a spring sleeved thereon, the upper ends of the guide column and the spring are connected with the stamping plate, the lower end surface of the stamping plate is provided with a first slot corresponding to the guide column and a second slot corresponding to the spring, the first slot and the second slot are in communication with each other, and the first slot and the second slot are in upper and lower cooperation, wherein the guide column has a movement space in the first slot to enable the guide column to slide with the first slot, and the spring is elastically abutted with the second slot.

[0012] As a further scheme of the present application, the stamping seat and the lower die seat cooperatively form a waste discharge channel connected to the stamping hole, and the waste discharge channel gradually expands from top to bottom.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1) The precise positioning groove design effectively solves the problem of insufficient positioning accuracy of traditional molds, greatly reduces the positional deviation of the product when placed before stamping, ensures that the product meets strict assembly requirements, significantly improves the product pass rate, reduces waste product generation, improves production efficiency and enterprise economic benefits;

[0015] 2) The buffer mechanism of the elastic assembly effectively reduces the adverse effects of impact force on the mold and the product during the stamping process. For the mold, it reduces wear caused by rigid impact, prolongs the service life of the mold, and reduces maintenance costs and replacement frequency. For the product, it avoids surface cracks, deformation and other defects caused by uneven impact force, further improves product quality and pass rate, and ensures the performance and appearance integrity of the product;

[0016] 3) The present mold has a reasonable structure design, precise positioning and buffering function, and can well adapt to the requirements of industrial automatic high-speed and continuous stamping operation, improve the stability and reliability of the entire stamping production process, help to promote the efficient operation of modern large-scale production, improve the competitiveness of enterprises in the market, and meet the trend of manufacturing industry towards high precision, high efficiency and low loss.

[0017] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0019] Figure 1 is a structural schematic diagram of the present application;

[0020] Figure 2 is a sectional structural schematic diagram of the present application;

[0021] Figure 3 is Figure 2 the enlarged structural schematic diagram of A in the figure.

[0022] The reference signs and names in the figure are as follows:

[0023] 1, upper die holder; 2, lower die holder; 3, upper die plate; 4, lower die plate; 5, stamping head; 6, stamping seat; 7, stamping hole position; 8, stamping plate; 9, elastic assembly; 10, sliding port; 11, positioning block; 12, positioning groove; 13, guide structure; 14, friction-reducing coating; 15, guide column; 16, spring; 17, first slot; 18, second slot; 19, waste discharge channel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0025] Please refer to Figures 1-3The utility model discloses an embodiment of a buffering type positioning stamping die, comprising upper die seat 1 and lower die seat 2 that are butt jointed, upper die plate 3 and lower die plate 4 are connected respectively between the butt joint of upper die seat 1 and lower die seat 2, the lower end surface of upper die plate 3 has stamping head 5, the upper end surface of lower die plate 4 is connected with stamping seat 6, stamping seat 6 is provided with stamping hole position 7 corresponding with stamping head 5, the just above of lower die plate 4 is provided with stamping plate 8, and the between stamping plate 8 and lower die plate 4 is connected through elastic component 9, the central position of stamping plate 8 is provided with sliding port 10 corresponding with stamping seat 6, and the relative stamping plate 8 can slide with stamping seat 6 through sliding port 10, elastic component 9 is provided with multiple, and multiple elastic component 9 is located at the four corner positions between stamping plate 8 and lower die plate 4.

[0026] The upper end surface height of stamping plate 8 is higher than the upper end surface of stamping seat 6 under the support of elastic component 9, wherein the upper end surface of stamping plate 8 and the circumferential side of sliding port 10 are provided with a plurality of positioning blocks 11, and the plurality of positioning blocks 11 surround to form a positioning groove 12 for the product, and the stamping hole position 7 is located in the positioning groove 12.

[0027] In the utility model technical scheme, stamping plate 8 is a key component, and the positioning blocks 11 are designed on the circumferential side of sliding port 10 on the upper end surface, these positioning blocks 11 are according to the geometric shape and size characteristics of the product, and are protruded at specific intervals and angles, thereby surrounding to form the positioning groove 12 that is highly adaptable to the product appearance, in the die preparation stage, the operator places the product in the positioning groove 12, the edge of the product is tightly combined with the inner surface of the positioning block 11 or keeps a very small gap, the positioning block 11 limits the product from multiple dimensions, forms stable constraint in the horizontal direction, effectively prevents the displacement of the product due to external factors (such as slight hand shake when placing operation, weak vibration of workshop environment, etc.), and this accurate positioning mechanism ensures that the product can accurately align the action area of stamping head 5 and stamping seat 6 in the stamping process, lays a foundation for high-quality stamping forming.

[0028] The plurality of elastic components 9 are evenly distributed at the four corner positions between the stamping plate 8 and the lower die plate 4, and form a stable and effective buffer system. At the initial moment of stamping, the stamping head 5 gradually approaches the product and starts to apply pressure as the upper die seat 1 descends. At this time, the product, as a force body, transmits the pressure to the stamping plate 8. The stamping plate 8 starts to move downward under the action of the pressure and overcomes the elastic force of the elastic component 9. The elastic component 9 is compressed at the same time. In this process, the kinetic energy of the stamping head 5 is gradually converted into the elastic potential energy of the elastic component 9 and stored. As the stamping process advances, the elastic potential energy is continuously accumulated. When the stamping head 5 completes the stamping action and starts to return, the elastic component 9 releases the stored elastic potential energy and pushes the stamping plate 8 upward to reset, thereby realizing effective buffering of the impact force during the entire stamping process. In this way, the original possible rigid impact is converted into the energy conversion and release process inside the elastic component 9, avoiding the huge impact force caused by direct rigid collision between the mold parts, and reducing the damage risk caused by uneven transmission of the impact force to the product.

[0029] In summary, the precise positioning groove 12 design effectively solves the problem of insufficient positioning accuracy of traditional molds, greatly reduces the positional deviation of the product when placed before stamping, ensures that the product meets strict assembly requirements, significantly improves the product pass rate, reduces waste product generation, improves production efficiency and enterprise economic benefits; the buffer mechanism of the elastic component 9 effectively reduces the adverse effects of the impact force during the stamping process on the mold and the product. For the mold, it reduces wear caused by rigid impact, prolongs the service life of the mold, and reduces maintenance costs and replacement frequency. For the product, it avoids surface cracks, deformation and other defects caused by uneven impact force, further improves product quality and pass rate, and ensures the performance and appearance integrity of the product. The mold structure design is reasonable, accurate and has a buffering function, and can well adapt to the requirements of industrial automatic high-speed and continuous stamping operation, improve the stability and reliability of the entire stamping production process, help to promote the efficient operation of modern large-scale production, improve the competitiveness of enterprises in the market, and meet the trend of manufacturing industry towards high precision, high efficiency and low loss.

[0030] In the embodiment of the utility model, the height of the positioning block 11 is higher than the difference between the maximum downward stroke of the stamping plate 8 during the stamping process and the thickness of the product.

[0031] The height of the positioning block 11 is determined based on the movement stroke of the punching plate 8 in the punching process and the product thickness, and the maximum downward stroke of the punching plate 8 under the pressure of the punching head 5 is a key parameter, and the product thickness determines the space occupied by the product in the mold, and the height of the positioning block 11 is higher than the difference between the maximum downward stroke of the punching plate 8 and the product thickness, so as to ensure that the positioning block 11 can effectively constrain the product in the horizontal direction during the entire punching process, even if the punching plate 8 is lowered to the maximum stroke, for example, when the maximum downward stroke of the punching plate 8 is 20 mm and the product thickness is 5 mm, if the height of the positioning block 11 is designed to be 18 mm (greater than 20-5=15 mm), then during the downward movement of the punching plate 8, the positioning block 11 always maintains the surrounding positioning state of the product, because if the height of the positioning block 11 is insufficient, when the punching plate 8 is lowered by a large stroke, the product may be offset due to the loss of effective blocking of the positioning block 11 in the horizontal direction, affecting the punching precision, therefore, the higher height design of the positioning block 11 enables it to continuously play a positioning role in each stage of the punching process, and ensures the positional accuracy of the product relative to the punching head 5 and the punching seat 6.

[0032] In the embodiment of the utility model, the inner surface of the positioning block 11 has a guide structure 13, and the guide structure 13 is an inner concave arc surface arranged along the height direction of the positioning block 11.

[0033] In the punching process, the product needs to be placed in the positioning groove 12 surrounded by the positioning block 11, and when the punching head 5 is pressed, the product will move downward with the punching plate 8 and contact the punching seat 6, and the design of the inner concave arc surface can conform to the shape contour of the product and provide a natural guide path for the product, when the product is placed in the positioning groove 12, the arc surface can make the product more easily slide into the correct position, reducing the adjustment time and difficulty during placement, for example, for circular or cylindrical products, the arc guide structure 13 can better fit the circumferential surface of the product, guiding the product to automatically center in the horizontal direction, ensuring that the axis of the product coincides with the center axis of the punching head 5 and the punching seat 6 as much as possible, and in the punching process, as the punching plate 8 descends, the product continuously contacts the arc surface of the inner surface of the positioning block 11, and due to the guiding effect of the arc surface, even if the product is subjected to some uneven pressure or slight displacement interference, it will be guided along the arc surface to the central position of the positioning groove 12, thereby ensuring that the movement trajectory of the product in the vertical and horizontal directions is relatively stable, and maintaining the relative positional accuracy of the product and the key parts of the punching mold.

[0034] In the embodiment of the utility model, the surface of the positioning block 11 is coated with a friction-reducing coating 14, and the friction-reducing coating 14 is a polytetrafluoroethylene coating or a molybdenum disulfide coating.

[0035] In the stamping process, the product and the inner surface of the positioning block 11 will produce relative motion and contact friction, in order to reduce the friction, the surface of the positioning block 11 is coated with a friction-reducing coating 14, the polytetrafluoroethylene coating and the molybdenum disulfide coating are both materials with excellent lubricating properties, the fluorine atoms in the molecular structure of polytetrafluoroethylene make it have extremely low surface energy, which can effectively reduce the adhesion to the surface of other objects; Molybdenum disulfide has a layered crystal structure, and when subjected to pressure, the layers between the layers are easy to slide, thereby playing a lubricating effect; When the product contacts and moves relative to the positioning block 11, the friction-reducing coating 14 can form a lubricating film on the contact surface, reducing the direct metal-metal or material-material friction.

[0036] In the utility model embodiment, the elastic assembly 9 includes the guide column 15 fixed in the lower die seat 2 and the spring 16 sleeved, the upper end of the guide column 15 and the spring 16 all are butt jointed with the stamping plate 8, the lower end surface of the stamping plate 8 is provided with the first slot 17 corresponding to the guide column 15 and the second slot 18 corresponding to the spring 16, the first slot 17 and the second slot 18 are mutually communicated, and the first slot 17 and the second slot 18 are in upper and lower cooperation, wherein, the guide column 15 has a moving space in the first slot 17, so that the guide column 15 is slidably connected with the first slot 17, and the spring 16 is elastically abutted with the second slot 18.

[0037] The guide column 15 is mainly arranged to provide accurate guide for the up-down movement of the stamping plate 8, the guide column 15 is fixed on the lower die seat 2, and the upper end is inserted into the first slot 17 in the lower end surface of the stamping plate 8, through the sliding fit mode, the stamping plate 8 is limited to move up and down along the axial direction of the guide column 15 only, so that the stamping plate 8 is prevented from deviating or tilting when subjected to the pressure of the stamping head 5 or the elastic force of the elastic assembly 9, and the linearity and stability of the movement of the stamping plate 8 are ensured, and the spring 16 is sleeved outside the guide column 15 and is elastically abutted with the second slot 18 in the lower end surface of the stamping plate 8, when the stamping head 5 exerts pressure to make the stamping plate 8 move downward, the spring 16 is compressed in the second slot 18, and the impact force of the stamping head 5 is converted into the elastic potential energy of the spring 16 and is stored, when the stamping head 5 returns, the spring 16 releases the elastic potential energy and pushes the stamping plate 8 to reset upward, the design that the first slot 17 and the second slot 18 are mutually communicated and in upper and lower cooperation makes the guide column 15 and the spring 16 be compactly installed between the stamping plate 8 and the lower die seat 2, so that the space is saved and the cooperative work between the components is ensured.

[0038] In the utility model embodiment, the stamping seat 6 and the lower die seat 2 cooperatively form the waste discharge channel 19 communicated with the stamping hole 7, and the waste discharge channel 19 is gradually enlarged from top to bottom.

[0039] In the stamping process, waste materials such as the corner cuttings under the blanking are generated, the stamping seat 6 and the lower die seat 2 cooperate to form the waste discharge channel 19 which communicates with the stamping hole position 7, the purpose is to let the waste materials be discharged from the die smoothly, the waste discharge channel 19 is designed in a progressive expansion from top to bottom, which is considered the movement state of the waste materials after being separated from the product, when the waste materials enter the waste discharge channel 19 from the stamping hole position 7, due to the small size of the upper part of the channel, the waste materials can be kept in the center position of the channel as much as possible in the initial stage, avoiding the waste materials to be blocked due to the random collision in the channel, with the falling of the waste materials, the channel is gradually expanded, which provides enough space for the waste materials to adapt to the irregular shape and movement track of the waste materials, preventing the waste materials from being accumulated due to the insufficient space in the lower part of the channel.

[0040] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A cushioned positioning punch die characterized by, The upper die base and the lower die base are in butt joint, and the upper die plate and the lower die plate are connected between the butt joint of the upper die base and the lower die base, respectively, the lower end surface of the upper die plate has a stamping head, the upper end surface of the lower die plate is connected with a stamping seat, the stamping seat is provided with a stamping hole corresponding to the stamping head, the stamping plate is arranged above the lower die plate, the stamping plate and the lower die plate are connected through the elastic assembly, the central position of the stamping plate is provided with a sliding hole corresponding to the stamping seat, the stamping plate can slide relative to the stamping seat through the sliding hole, the elastic assembly is provided with a plurality of elastic assemblies, and the plurality of elastic assemblies are located at the four corner positions between the stamping plate and the lower die plate. The upper end surface of the stamping plate is higher than the upper end surface of the stamping seat under the support of the elastic assembly, wherein the upper end surface of the stamping plate and the circumferential side of the sliding hole are provided with a plurality of positioning blocks, the plurality of positioning blocks surround to form a positioning groove for the product, and the stamping hole is located in the positioning groove.

2. A cushioned positioning punch and die assembly according to claim 1 wherein, The height of the positioning block is higher than the difference between the maximum descending stroke of the stamping plate in the stamping process and the thickness of the product.

3. The cushioned positioning stamping die of claim 1, wherein, The inner surface of the positioning block has a guide structure, which is an inner concave arc surface arranged along the height direction of the positioning block.

4. The cushioned positioning punch and die assembly of claim 1 wherein, The surface of the positioning block is coated with a friction-reducing coating, which is a polytetrafluoroethylene coating or a molybdenum disulfide coating.

5. The cushioned positioning punch and die assembly of claim 1 wherein, The elastic assembly includes a guide column fixed on the lower die base and a spring sleeved thereon, the upper end of the guide column and the spring is in butt joint with the stamping plate, the lower end surface of the stamping plate is provided with a first groove corresponding to the guide column and a second groove corresponding to the spring, the first groove and the second groove are in communication with each other, and the first groove and the second groove are in upper and lower cooperation, wherein the guide column has a moving space in the first groove, so that the guide column and the first groove are in sliding cooperation, and the spring and the second groove are in elastic abutting cooperation.

6. The cushioned positioning punch and die assembly of claim 1 wherein, The stamping seat and the lower die base are cooperated to form a waste discharge channel communicated with the stamping hole, and the waste discharge channel is gradually enlarged from top to bottom.

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