Disassembling and assembling die for CSK part

Abstract

A disassembling and assembling die for a CSK part comprises an upper die and a lower die, the lower surface of the upper die is detachably connected with a punching needle, and an insert core structure is arranged on the upper surface of the lower die in an embedded mode; the punching needles are in one-to-one correspondence with the insert structures; the lower end edges of the punching needles are chamfered; the upper end face of the insert structure serves as a supporting face of a vertical hole of the CSK part, the upper end of the insert structure protrudes to the position above the lower die, and when the upper die and the lower die are closed, the lower end face of the punching needle penetrates through the vertical hole and is in interference fit with the top end face of the insert structure, so that the vertical hole is formed into a chamfering hole. A part is supported through the insert core structure, the upper end face of the insert core structure protrudes to the position above the lower die, when the upper die and the lower die are closed, the upper end face of the insert core structure is in interference fit with the punching needle, a gap caused by rebounding of the steel part can be overcome, and the machining precision of a chamfering hole is guaranteed; when the insert core structure needs to be replaced, only the set screw needs to be unscrewed, the lower template does not need to be replaced or disassembled, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of part hole processing, specifically relates to a CSK part's dismounting mould. BACKGROUND

[0002] CSK part is the part with CSK chamfered hole, and the part is often needed to be punched chamfered hole in the production process, and the pull pin is given room for when the rivet is installed. CSK chamfered hole processing is divided into two steps, the first step is punched vertical hole, and the second step is punched chamfered hole. But for some thin parts, the general composite mould cannot meet the requirements, and the reasons are as follows:

[0003] 1, CSK part is generally steel, if the punch needle punches the hole, and the lower end surface is attached to the upper surface of the lower mould, then when the punch needle punches the hole, the steel has springback, and the gap generated by springback will have steel extrusion, so that the chamfered hole lower hole has inward excess material extrusion, greatly affecting the chamfered hole precision.

[0004] 2, the punch needle and the lower mould collide and punch the hole for a long time, which will make the upper surface of the lower mould collapse and be hairy, and regrinding is needed in the later period.

[0005] Therefore, how to solve the above-mentioned problems of the prior art has become the subject to be studied and solved by the utility model. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a CSK part's dismounting mould.

[0007] In order to achieve the above-mentioned purposes, the utility model adopts the technical scheme that:

[0008] A CSK part's dismounting mould, comprising an upper mould and a lower mould, the lower surface of the upper mould is detachably connected with a punch needle, and the upper surface of the lower mould is embedded with an insert structure;

[0009] The punch needle is one-to-one corresponding to the insert structure, and the lower end edge of the punch needle is provided as a chamfer;

[0010] The upper end face of the insert structure serves as the supporting surface of the CSK part vertical hole, the upper end of the insert structure protrudes above the lower mould, and when the upper mould and the lower mould are closed, the lower end face of the punch needle penetrates the vertical hole and is in interference fit with the top end face of the insert structure, so that the vertical hole is formed into a chamfered hole.

[0011] Preferably, the insert structure is embedded in the embedding groove formed in the upper surface of the upper mould, the insert structure is provided as a columnar shape, and the top end edge is fixed to the upper mould through a stop screw.

[0012] Further preferably, the insert structure is provided with an exhaust hole.

[0013] Further preferably, the insert structure comprises an upper layer insert and a lower layer insert arranged separately, and the upper layer insert and the lower layer insert are arranged in a stack.

[0014] Further preferably, the diameter of the exhaust hole in the lower layer insert is larger than the diameter of the exhaust hole in the upper layer insert.

[0015] Preferably, the upper end surface edge of the insert structure is arranged as a chamfer.

[0016] Preferably, the upper die comprises an upper die seat, an upper pad plate, an upper clamping plate, a stop plate and an upper stripper plate arranged in sequence from top to bottom;

[0017] The upper pad plate, the upper die seat and the upper clamping plate are detachably connected, and a T-shaped hole for limiting the T-shaped head of the punch pin is arranged through the upper clamping plate.

[0018] The stop plate and the upper stripper plate are detachably connected, and both are slidably connected with the upper die seat through a sliding rod, and both are arranged with a through hole for the punch pin through the upper clamping plate.

[0019] When the upper die and the lower die are opened, the stop plate and the upper stripper plate are moved downward under the action of their own gravity and are separated from the upper clamping plate, and the lower end of the punch pin is hidden in the through hole.

[0020] Preferably, the lower die comprises a lower die seat, a lower pad plate and a lower die plate arranged in sequence from bottom to top, and the embedding groove is arranged through the lower die plate.

[0021] Further preferably, the lower pad plate is arranged with a through hole communicated with the exhaust hole, and the diameter of the through hole is larger than the diameter of the exhaust hole in the lower layer insert.

[0022] The working principle and advantages of the utility model are as follows:

[0023] The utility model discloses a support part through the insert structure, and the upper end surface of the insert structure protrudes above the lower die, when the upper die and the lower die are closed, the upper end surface of the insert structure is in interference fit with the punch pin, can overcome the gap caused by the springback of steel parts, guarantee the machining precision of chamfered hole.

[0024] The utility model discloses an insert structure is embedded in the upper surface of the lower die, and then is fixed by the stop screw, when needing to replace the insert structure, only needs to unscrew the stop screw, can realize quick replacement, need not to replace or disassemble the lower die plate, reduces the maintenance cost.

[0025] The utility model discloses an insert structure is arranged as the separation of upper and lower two layers, and the upper layer insert is used for supporting parts, and the lower layer insert can be arranged with different specifications standard parts, so that the late quick maintenance replacement is supplied, and the gasket is not needed.

[0026] The utility model discloses a quick detach structure is arranged to the structure of entering son, makes whole mould maintenance efficiency high, maintenance efficiency promotion 300%, and quality is stable, mould cost is low, cost reduction 30%. BRIEF DESCRIPTION OF DRAWINGS

[0027] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the closing mould state structure schematic diagram of the utility model embodiment;

[0028] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the opening mould state structure schematic diagram of the utility model embodiment;

[0029] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the closing mould state partial section view of the utility model embodiment;

[0030] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the structure section view of entering son of the utility model embodiment;

[0031] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is the structure of the utility model Figure 4 Part A enlarged view;

[0032] BRIEF DESCRIPTION OF DRAWINGS Figure 6 It is the structure of the utility model Figure 4 Part B enlarged view.

[0033] In the above drawing: 1. upper die;11. upper die holder;111. T type sliding hole;12. upper backing plate;13. upper clamping plate;131. T type hole;14. stop plate;15. upper stripping plate;16. sliding rod;2. lower die;21. lower die holder;22. lower backing plate;221. through hole;23. lower die plate;231. embedded groove;3 punch;4. structure of entering son;41. upper layer entering son;42. lower layer entering son;43. exhaust hole;5. stop screw;

[0034] 100. vertical hole;200. chamfered hole. DETAILED DESCRIPTION

[0035] The utility model will be further described below in conjunction with the drawings and examples:

[0036] The present application will be further described below in conjunction with the drawings and examples:

[0037] The language in this paper is only for describing specific embodiments, and is not intended to limit the present application. Singular forms such as "a", "this", "this", "this" and "the" are also included in the plural form as used herein.

[0038] As used herein, "connected" or "coupled" can mean directly connected or coupled, or indirectly connected or coupled via one or more other components or devices.

[0039] As used herein, "comprising", "including", "containing", "having" and other similar words, are intended to be open-ended language that means "including, but not limited to".

[0040] As used herein, "front", "back", "up", "down", "left", "right", and other similarly used words are words of convenience and are not intended to limit the scope of the application or the application to any particular position or spatial arrangement.

[0041] Referring to the accompanying drawings Figures 1-6 As shown in the drawings, a CSK part dismounting mold includes an upper mold 1 and a lower mold 2, the lower surface of the upper mold 1 is detachably connected with a punch pin 3, and the upper surface of the lower mold 2 is embedded with a female structure 4;

[0042] The punch pin 3 corresponds to the female structure 4 one by one, the lower end edge of the punch pin 3 is chamfered, the lower edge diameter of the chamfered surface of the lower end of the punch pin 3 is smaller than the diameter of the vertical hole 100 of the CSK part, and the upper edge diameter of the chamfer is larger than the diameter of the vertical hole 100 of the CSK part, see Figure 6 ;

[0043] The upper end surface of the female structure 4 serves as the support surface of the vertical hole 100 of the CSK part, the upper end of the female structure 4 protrudes above the lower mold 2, and when the upper mold 1 and the lower mold 2 are closed, the lower end surface of the punch pin 3 penetrates through the vertical hole 100 and the top end surface of the female structure 4 to form an interference fit, so that the vertical hole 100 is formed into a chamfered hole 200.

[0044] In this embodiment, the upper end surface edge of the female structure 4 is chamfered, the upper end surface of the female structure 4 protrudes 10.05mm above the upper mold 1, and the lower edge of the chamfer is 0.1mm lower than the upper surface of the upper mold 1, so as to realize the interference fit between the punch pin 3 and the top end surface of the female structure 4.

[0045] Since the material of the part is generally steel, if the upper end surface of the female structure 4 is horizontally coplanar with the upper surface of the upper mold 1, when the punch pin 3 punches a hole, the steel will have a springback, and the gap caused by the springback will cause the steel to be squeezed in, so that the lower hole of the chamfered hole 200 has inward excess material, which greatly affects the precision of the chamfered hole 200. In this embodiment, the upper end of the female structure 4 is protrudingly arranged and interferingly fitted with the punch pin 3, so that when the punch pin 3 punches a hole, the gap caused by the springback of the steel can be overcome, and the machining precision of the chamfered hole 200 is ensured.

[0046] In the embodiment, the substructure 4 is embedded in the embedding groove 231 on the upper surface of the upper die 1, and the substructure 4 is in a columnar shape, and the top edge thereof is fixed to the upper die 1 by the stop screw 5. Because the lower die 2 is prone to collapse due to the long-time impact of the punch pin 3, the substructure 4 is used to support the part, thereby avoiding the replacement of the lower die 2. When the substructure 4 is damaged, the stop screw 5 is only needed to be unscrewed, and the quick replacement can be realized, thereby facilitating the operation.

[0047] In the embodiment, the substructure 4 includes the upper-layer substructure 41 and the lower-layer substructure 42 which are arranged in a split mode, and the upper-layer substructure 41 and the lower-layer substructure 42 are stacked in a top-to-bottom mode. The lower-layer substructure 42 can be a plurality of standard parts for later quick maintenance and replacement, and does not need to use a gasket structure, thereby being suitable for the case where the gasket is not used in a large environment.

[0048] After the improvement, the maintenance efficiency of the mold is high, the maintenance efficiency is improved by 300%, the quality is stable, the mold cost is low, and the cost is reduced by 30%.

[0049] In the embodiment, the substructure 4 is embedded in the embedding groove 231 on the upper surface of the upper die 1, and the substructure 4 is in a columnar shape, and the top edge thereof is fixed to the upper die 1 by the stop screw 5. Because the lower die 2 is prone to collapse due to the long-time impact of the punch pin 3, the substructure 4 is used to support the part, thereby avoiding the replacement of the lower die 2. When the substructure 4 is damaged, the stop screw 5 is only needed to be unscrewed, and the quick replacement can be realized, thereby facilitating the operation.

[0050] In the embodiment, the upper die 1 includes the upper die seat 11, the upper gasket plate 12, the upper clamping plate 13, the stop plate 14 and the upper stripping plate 15 which are arranged in a top-to-bottom mode.

[0051] The upper gasket plate 12, the upper die seat 11 and the upper clamping plate 13 are detachably connected by screws, the upper end of the punch pin 3 is provided in a T shape, and the T-shaped hole 131 for limiting the T-shaped head of the punch pin 3 is provided in the upper clamping plate 13. The upper clamping plate 13 is detached, and the punch pin 3 can be replaced, thereby solving the problem that the chamfered edge of the punch pin 3 is blunt due to the long-time punching and the impact with the lower die 2.

[0052] The stop plate 14 and the upper stripping plate 15 are detachably connected by screws, and are slidably connected with the upper die seat 11 through the sliding rod 16. The lower end of the sliding rod 16 is fixed to the stop plate 14 and the upper stripping plate 15, and the T-shaped head of the upper end is slidably arranged in the T-shaped sliding hole 111 on the upper die seat 11. The stop plate 14 and the upper stripping plate 15 are both provided with the perforation for passing the punch pin 3.

[0053] When the upper die 1 and the lower die 2 are opened, the stop plate 14 and the upper stripping plate 15 are lowered under the action of their own gravity and are separated from the upper clamping plate 13, and the lower end of the punch pin 3 is hidden in the perforation.

[0054] When the upper die 1 is combined with the lower die 2, the stop plate 14 is attached to the upper clamping plate 13, the upper stripping plate 15 is attached to the part, the lower end of the punch pin 3 protrudes to the outside of the through hole and penetrates the vertical hole 100 of the part, and the chamfered hole 200 is punched.

[0055] In the embodiment, the lower die 2 comprises a lower die seat 21, a lower base plate 22 and a lower die plate 23 arranged in sequence from bottom to top, and the three are detachably connected through screws. The embedding groove 231 is provided through on the lower die plate 23.

[0056] In the embodiment, the lower base plate 22 is provided with a through hole 221 through on the lower base plate 22, which is communicated with the exhaust hole 43. The diameter of the through hole 221 is greater than that of the exhaust hole 43 in the lower layer 42, so that the exhaust and pressure relief can be quickly achieved.

[0057] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and it cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A CSK part disassembly jig, characterized by: Including upper die and lower die, the lower surface of the upper die is detachably connected with the punch pin, and the upper surface of the lower die is embedded with the female structure; The punch pin corresponds to the female structure one by one, and the lower end edge of the punch pin is chamfered; The upper end surface of the female structure serves as the support surface of the vertical hole of the CSK part, the upper end of the female structure protrudes above the lower die, and when the upper die and the lower die are closed, the lower end surface of the punch pin penetrates through the vertical hole and is in interference fit with the top end surface of the female structure, so that the vertical hole is formed into a chamfered hole.

2. A CSK part disassembly jig according to claim 1, characterized in that: The female structure is embedded in the embedding groove opened on the upper surface of the upper die, and the female structure is in the form of a column, and the top end edge is fixed to the upper die by a stop screw.

3. A CSK part knock-out die according to claim 2, wherein: An exhaust hole is arranged in the female structure.

4. A CSK part knock-out die according to claim 3, wherein: The female structure includes an upper female and a lower female arranged in a split manner, and the upper female and the lower female are stacked one above the other.

5. A CSK part knock-out die according to claim 4, wherein: The diameter of the exhaust hole in the lower female is greater than that of the exhaust hole in the upper female.

6. A CSK part knock-out die according to claim 1, wherein: The upper end surface edge of the female structure is chamfered.

7. The CSK part demolding mold according to claim 1, characterized by: The upper die includes an upper die seat, an upper pad plate, an upper clamping plate, a stop plate and an upper stripper plate arranged in sequence from top to bottom. The upper pad plate, the upper die seat and the upper clamping plate are detachably connected, and a T-shaped hole for limiting the T-shaped head of the punch pin is opened through the upper clamping plate. The stop plate and the upper stripper plate are detachably connected, and are in sliding fit with the upper die seat through a sliding rod, and a perforation for passing the punch pin is opened through the upper end surfaces of the stop plate and the upper stripper plate. When the upper die and the lower die are opened, the stop plate and the upper stripper plate are lowered under the action of their own gravity and are separated from the upper clamping plate, and the lower end of the punch pin is hidden in the perforation.

8. The CSK part demolding mold according to claim 4, characterized by: The lower die includes a lower die seat, a lower pad plate and a lower die plate arranged in sequence from bottom to top, and the embedding groove is opened through the lower die plate.

9. A CSK part knock-out die according to claim 8, wherein: A through hole in communication with the exhaust hole is opened through the lower pad plate, and the diameter of the through hole is greater than that of the exhaust hole in the lower female.

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