A TO56 stamping die

Abstract

A TO56 stamping die, which relates to the technical field of forming dies, includes a die body. Along the feeding direction on the die body, there are successively arranged a punching and trimming module, an extrusion forming module, and a punching and blanking module; the extrusion forming module includes a fixedly arranged extrusion female die. An ejector spring for forming is arranged inside the extrusion female die. A tube tongue ejector spring assembly is arranged inside the ejector spring for forming and is slidably arranged vertically. Above the ejector spring for forming, an extrusion punch is also slidably arranged vertically. The present invention solves the problems in the traditional stamping die structure which is designed with a single set of templates, resulting in poor dimensional consistency of the produced products and relatively large thickness deviation of the products; and frequent die production and maintenance. The extrusion forming punch cracks and the small holes often stop due to repair burrs and broken needles. In the light case, it is necessary to replace the small hole punch and the die edge. In the heavy case, due to the misfeeding of materials caused by the crack or breakage of the punch, most of the die parts are scrapped, and the repair cost is relatively high.

Description

Technical Field

[0001] The present invention relates to the technical field of forming molds, and particularly relates to a TO56 stamping mold. Background Art

[0002] LD-TO devices are key devices in optical communication systems, used for information optoelectronic conversion and transmission in optical communication. LD-TO devices need to be stamped and formed during the production process.

[0003] A patent of CN209272220U is disclosed in the prior art. The solution includes a base, a rear side plate, a left fixing plate, a hydraulic cylinder, an upper die shell and a lower die base; includes an upper adjusting plate, a lower adjusting plate, a support sleeve, four groups of support springs and four groups of support sliding columns; also includes a left support seat, a right support seat, a pressing plate, a lower pressing head, an upper pressing head, a left guide rail, a right guide rail, a right fixing plate, a pressing column, a compression spring and a reset spring. The left support seat and the right support seat are respectively located on the left and right sides of the lower die base, and the bottom ends of the left support seat and the right support seat are respectively connected to the left and right sides of the top end of the base.

[0004] As the device is used in production, the deficiencies of this technology have gradually emerged, mainly manifested in the following aspects:

[0005] First, the stamping die structure of existing such products is a single-group template design, and the process design is unreasonable, resulting in poor dimensional consistency of the produced products and large thickness deviations of the products.

[0006] Second, the mold production and maintenance are relatively frequent. The extrusion forming punch often cracks, and the small holes often stop due to repair burrs and broken needles. In the light case, it is necessary to replace the small hole punch and the mold edge. In the heavy case, most parts of the mold are scrapped due to material misfeeding caused by punch cracking or broken needles, and the maintenance cost is relatively high.

[0007] In summary, it is obvious that the prior art has inconveniences and defects in actual use, so it is necessary to be improved. Summary of the Invention

[0008] Aiming at the defects in the prior art, the present invention provides a TO56 stamping mold to solve the problems that the stamping die structure of the traditional technology is a single-group template design, and the process design is unreasonable, resulting in poor dimensional consistency of the produced products and large thickness deviations of the products; and the mold production and maintenance are relatively frequent. The extrusion forming punch often cracks, and the small holes often stop due to repair burrs and broken needles. In the light case, it is necessary to replace the small hole punch and the mold edge. In the heavy case, most parts of the mold are scrapped due to material misfeeding caused by punch cracking or broken needles, and the maintenance cost is relatively high.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A TO56 stamping die, comprising a die body, wherein a punching, cutting and undercutting module, an extrusion forming module and a punching and blanking module are sequentially arranged on the die body along the feeding direction; the extrusion forming module includes a fixedly arranged extrusion female die, an inner forming ejector is arranged in the extrusion female die, a tube tongue ejector assembly which is arranged to slide vertically is arranged in the inner forming ejector, and an extrusion punch is further arranged to slide vertically above the inner forming ejector.

[0011] As an optimized scheme, a driving component for driving the tube tongue ejector assembly to slide up and down is connected to the tube tongue ejector assembly.

[0012] As an optimized scheme, the die body includes an upper template, an upper backing plate, an upper clamping plate, a stop plate, an upper stripper plate, a concave template, a first lower backing plate, a second lower backing plate and a lower bottom plate which are arranged in parallel from top to bottom.

[0013] As an optimized scheme, the tube tongue ejector assembly includes a tube tongue ejector, a tube tongue hole is formed in the inner forming ejector, and the tube tongue ejector is slidably arranged in the tube tongue hole.

[0014] As an optimized scheme, an ejecting ejector rod which is arranged to slide vertically is arranged below the tube tongue ejector, and the upper end of the ejecting ejector rod abuts against the lower end of the tube tongue ejector.

[0015] As an optimized scheme, the driving component includes a lower striking plate which is slidably installed vertically in the second lower backing plate, and the lower striking plate drives the ejecting ejector rod to slide vertically through a driving part.

[0016] As an optimized scheme, the driving machine includes a driving groove formed in the lower surface, the lower end of the ejecting ejector rod passes through the lower striking plate and extends into the driving groove, and a lower ejector rod is fixedly connected, and the upper surface of the lower ejector rod abuts against the upper end of the driving groove.

[0017] As an optimized scheme, a middle spring is arranged on the lower bottom plate, a gasket is abutted against the upper end of the middle spring, and the lower end of the lower ejector rod abuts against the upper surface of the gasket.

[0018] As an optimized scheme, reset springs are respectively arranged in parallel on both sides of the middle spring, and the upper ends of the reset springs abut against the lower surface of the lower striking plate.

[0019] As an optimized scheme, an ejector rod is abutted against the upper surface of the lower striking plate, and a corresponding pressure rod is arranged to slide vertically above the ejector rod.

[0020] As an optimized scheme, the upper ends of the pressure rod and the extrusion punch respectively abut against the lower surface of the upper backing plate.

[0021] As an optimized solution, a compression spring abuts against the upper surface of the stop plate, and the upper end of the compression spring abuts against the upper template.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The original mold needed to be repaired once every 5,000 molds. After improvement, the mold life can reach 50,000 molds before maintenance, reducing the mold maintenance cost;

[0024] The product forming consistency CPK has been improved from the original 0.64 to 1.85, the production is stable and the yield has been greatly improved;

[0025] The mold is easy to use, the operation difficulty is reduced. From the original one person one machine, it has achieved one person three machines, reducing the labor cost and the skill requirements of operators;

[0026] The manufacturing cost is low, and the maintenance is convenient; the design is reasonable, the cooperation between structures is precise; it is convenient and fast; the stability in the working process is improved; there are few components, the process is simple, and the failure rate is low; the structure is simple, the service life is long; the operation and control are simple, it is easy to be mass-produced and installed, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is a schematic structural diagram of the present invention in a top view state;

[0030] Figure 3 is Figure 2 a schematic cross-sectional structure diagram taken along the A-A direction in

[0031] In the figure: 1 - mold shank; 2 - upper template; 3 - upper backing plate; 4 - upper clamping plate; 5 - stop plate; 6 - upper stripper plate; 7 - concave template; 8 - first lower backing plate; 9 - second lower backing plate; 10 - lower bottom plate; 11 - extrusion punch; 12 - extrusion die; 13 - forming spring ejector; 14 - tube tongue spring ejector; 15 - ejector rod; 16 - lower ejector rod; 17 - gasket; 18 - middle spring; 19 - compression spring; 20 - return spring; 21 - lower stripper plate; 22 - ejector pin; 23 - pressure rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0033] As Figures 1 to 3 shown, a TO56 stamping die includes a die body. Along the feeding direction on the die body, there are successively arranged a punching and cutting-off module, an extrusion forming module, and a punching and blanking module; the extrusion forming module includes a fixed extrusion female die 12, an inner forming ejector 13 is arranged in the extrusion female die 12, a tube tongue ejector 14 assembly is arranged inside the forming ejector 13 and is slidably arranged vertically, and an extrusion punch 11 is also slidably arranged vertically above the forming ejector 13.

[0034] A driving component is connected to the tube tongue ejector 14 assembly to drive it to slide up and down.

[0035] The die body includes an upper template 2, an upper backing plate 3, an upper clamping plate 4, a stop plate 5, an upper stripping plate 6, a concave template 7, a first lower backing plate 8, a second lower backing plate 9, and a lower bottom plate 10 which are arranged in parallel from top to bottom. A die handle 1 is also connected above the upper template 2.

[0036] The tube tongue ejector 14 assembly includes a tube tongue ejector 14. The forming ejector 13 is provided with a tube tongue hole, and the tube tongue ejector 14 is slidably arranged in the tube tongue hole.

[0037] Below the tube tongue ejector 14, an ejecting ejector rod 15 is slidably arranged vertically. The upper end of the ejecting ejector rod 15 abuts against the lower end of the tube tongue ejector 14.

[0038] The driving component includes a lower punching plate 21 slidably installed vertically in the second lower backing plate 9. The lower punching plate 21 drives the ejecting ejector rod 15 to slide vertically through a driving part.

[0039] The driving machine includes a driving groove opened on the lower surface. The lower end of the ejecting ejector rod 15 passes through the lower punching plate 21 and extends into the driving groove, and is fixedly connected with a lower ejector rod 16. The upper surface of the lower ejector rod 16 abuts against the upper end of the driving groove.

[0040] A middle spring 18 is arranged on the lower bottom plate 10. A gasket 17 abuts against the upper end of the middle spring 18. The lower end of the lower ejector rod 16 abuts against the upper surface of the gasket 17.

[0041] On both sides of the middle spring 18, reset springs 20 are respectively arranged in parallel. The upper ends of the reset springs 20 abut against the lower surface of the lower punching plate 21.

[0042] An ejector rod 22 abuts against the upper surface of the lower punching plate 21. Above the ejector rod 22, a corresponding pressure rod 23 is slidably arranged vertically.

[0043] The upper ends of the compression bar 23 and the extrusion punch 11 respectively abut against the lower surface of the upper backing plate 3.

[0044] A compression spring 19 abuts against the upper surface of the stop plate 5, and the upper end of the compression spring 19 abuts against the upper template 2.

[0045] Among them, the punching and notching module is the first group, which is the guiding pin punching and notching station, mainly providing precise positioning for the subsequent processes and making way for the flow of the extruded material to prevent the positioning deviation of the material tape caused by the extrusion deformation in the subsequent processes from affecting the product quality.

[0046] The extrusion forming module is the second group, which is the extrusion conforming forming station. This station is set near the working pressure center of the punching machine and is the station with the largest forming force in this set of molds.

[0047] During forming, the upper stripper plate 6 approaches the concave template 7, the compression bar 23 contacts the ejector rod 22, the ejector rod 22 presses the lower striker plate 21 to move downward, and presses down on the tube tongue ejector 14 assembly, so that the tube tongue ejector 14 assembly and the forming ejector 13 vacate the forming cavity. The upper stripper plate 6 and the concave template 7 are closed and the die extrusion forming action is carried out. After forming, the first-stage ejector first ejects the product from the cavity, and then the rear template falls off. When the compression bar 23 and the ejector rod 22 are separated after contact, the tube tongue ejector 14 assembly ejects and resets to realize the product demolding action.

[0048] The punching and blanking module is the third group, and the main processes are reverse punching, small hole chamfering and deburring, rough cutting, and fine cutting blanking processes.

[0049] When stamping and forming, the material tape is fed into the die, and stamping production can be carried out according to the operation of a conventional continuous die.

[0050] The structures of the punching and notching module and the punching and blanking module can adopt the commonly seen structures in daily life, so the specific structures are not elaborated here.

[0051] The modules are separated from each other, each having an independent inner guide post to control its forming accuracy, and the movement accuracies between them do not affect each other. An independent punching reverse assembly design has been carried out for the part structure of the reverse punching process, which not only ensures the die accuracy, but also improves the durability of the die parts, reduces the problems of punching punch skewing, punching needle breaking, and burr generation caused by the inclination of the forging die template, effectively improves the punching quality, and at the same time improves the service life of the die. For the extrusion forming station, the compound closed extrusion method is realized through the die structure, and the tube tongue and the sinking groove part are formed at one time, ensuring the flatness and thickness dimensions of the extrusion forming here. The strengthening treatment of the die punch also improves the service life of the die punch.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the specification of the present invention.

Claims

1. A TO56 stamping die, characterized in that: It includes a die body, on which a punching and cutting-off module, an extrusion forming module, and a punching and blanking module are sequentially arranged along the feeding direction; the extrusion forming module includes a fixedly arranged extrusion female die (12), a forming ejector (13) is arranged inside the extrusion female die (12), a tube tongue ejector (14) assembly is arranged inside the forming ejector (13) and is slidably arranged vertically, and an extrusion punch (11) is also slidably arranged vertically above the forming ejector (13). A driving component is connected to the tube tongue ejector (14) assembly to drive it to slide up and down. The die body includes an upper template (2), an upper backing plate (3), an upper clamping plate (4), a stop plate (5), an upper stripper plate (6), a concave template (7), a first-layer lower backing plate (8), a second-layer lower backing plate (9), and a lower bottom plate (10) which are arranged in parallel from top to bottom. The tube tongue ejector (14) assembly includes a tube tongue ejector (14), a tube tongue hole is formed in the forming ejector (13), and the tube tongue ejector (14) is slidably arranged in the tube tongue hole. Among them, the punching and cutting-off module is the first group, which is a guiding pin punching and cutting-off station, providing precise positioning for subsequent processes and making way for the flow of extruded materials, preventing the positioning deviation of the material strip caused by the extrusion deformation in subsequent processes from affecting the product quality. The extrusion forming module is the second group, which is an extrusion composite forming station. This station is arranged near the working pressure center of the punching press and is the station with the largest forming force in this stamping die. The punching and blanking module is the third group, and the processes are reverse punching, small hole chamfering and deburring, rough cutting, and fine cutting and blanking processes. A top-out ejector rod (15) is slidably arranged vertically below the tube tongue ejector (14), and the upper end of the top-out ejector rod (15) abuts against the lower end of the tube tongue ejector (14). The driving component includes a lower punching plate (21) slidably installed vertically in the second-layer lower backing plate (9), and the lower punching plate (21) drives the top-out ejector rod (15) to slide vertically through a driving part. A ejector rod (22) abuts against the upper surface of the lower punching plate (21), and a pressing rod (23) corresponding to it is slidably arranged vertically above the ejector rod (22). The driving component includes a driving groove formed on the lower surface of the lower punching plate (21), the lower end of the top-out ejector rod (15) passes through the lower punching plate (21) and extends into the driving groove, and a lower ejector rod (16) is fixedly connected, and the upper surface of the lower ejector rod (16) abuts against the upper end of the driving groove.

2. The TO56 stamping die according to claim 1, characterized in that: A middle spring (18) is arranged on the lower bottom plate (10), a gasket (17) abuts against the upper end of the middle spring (18), and the lower end of the lower ejector rod (16) abuts against the upper surface of the gasket (17).

3. The TO56 stamping die according to claim 2, characterized in that: Reset springs (20) are respectively arranged in parallel on both sides of the middle spring (18), and the upper ends of the reset springs (20) abut against the lower surface of the lower punching plate (21).

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