Double-sided die cutting mechanism for closed cavity

Abstract

The application discloses a double-sided punching mechanism for closed cavity, which solves the problem of poor punching quality of the prior art. The punching mechanism comprises a product mounting assembly, a lower die assembly, an upper die assembly and a side punching assembly. The product mounting assembly is provided with a first inclined sliding block, a second inclined sliding block and a third inclined sliding block. A first elastic member is arranged on the lower die, and a second elastic member is arranged on the upper die. Before the die is closed and after the die is opened, only the first elastic member acts on the third inclined sliding block to make the third inclined sliding block move upward and reduce the width of the product mounting assembly, thereby facilitating the mounting and removal of the product. After the die is closed, the second elastic member moves downward with the upper die and transmits the elastic force to the top of the third inclined sliding block through a block. At this time, the elastic force of the second elastic member is greater than that of the first elastic member, so that the third inclined sliding block moves downward to increase the width of the product mounting assembly, support the product and reduce the collapse of the product in the punching process, thereby improving the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of punching mechanism, in particular to a closed cavity double-sided punching mechanism. BACKGROUND

[0002] With the rapid development of the automobile industry, the style of the automobile is changing rapidly, the lightweight development of the automobile product is rapid, and the structure of the automobile parts is more and more complex. Aluminum profiles are more and more used in automobiles, and the cross-section parts of closed circular or square profiles such as bumper beams, wheel covers, energy absorption boxes, door anti-collision rods, fireproof beams and other products have some holes which are two-way through holes and have requirements of concentricity, surface contour and the like. For the machining of such high-precision holes, CNC drilling or double punching is usually used. However, CNC drilling has low efficiency and capacity, and some special drill bits need to be customized, and burrs are easily generated during drilling, and a deburring process needs to be added subsequently, and some customers do not allow burrs to remain. Double punching increases the requirements of the perpendicularity of the sawing cross-section of the product profile, the surface contour and the like, and increases the difficulty of the previous process, but the punching core collapses due to the cantilever force, resulting in that the surface contour of the product after punching is out of tolerance and the product quality is reduced. SUMMARY

[0003] The present application is made in consideration of the foregoing problems, and the purpose of the present application is to provide a closed cavity double-sided punching mechanism which can improve the capacity and quality of the product.

[0004] To achieve the above-mentioned purpose, the present application provides a closed cavity double-sided punching mechanism, comprising:

[0005] A product mounting assembly, the product mounting assembly comprising a first inclined sliding block and a second inclined sliding block, a gap being provided between the first inclined sliding block and the second inclined sliding block, the width of the gap decreasing from top to bottom, and a third inclined sliding block being provided in the gap;

[0006] A lower die assembly, the lower die assembly comprising a lower die and a first elastic member provided above the lower die, one end of the first elastic member being connected to the bottom of the third inclined sliding block;

[0007] An upper die assembly, the upper die assembly being provided above the product mounting assembly in a lifting manner, and the upper die assembly comprising an upper die, a second elastic member provided below the upper die, and a striking block connected to the bottom of the second elastic member, and when the upper die assembly and the lower die assembly are closed, the striking block abuts against the top of the third inclined sliding block, and the elastic force of the second elastic member is greater than that of the first elastic member;

[0008] Side punching assemblies, two side punching assemblies being provided on the two sides of the product mounting assembly respectively.

[0009] The first inclined sliding block and the second inclined sliding block are oppositely provided with a first inclined surface and a second inclined surface, respectively, and the first inclined surface and the second inclined surface are oppositely inclined.

[0010] The lower die assembly further comprises a supporting plate and a fixing base, the supporting plate is arranged on the lower die, the fixing base is arranged on the supporting plate, one end of the product mounting assembly is arranged in the fixing base, a guide column is arranged in the fixing base, the guide column passes through the third inclined sliding block, and the third inclined sliding block can move up and down along the guide column.

[0011] The fixing base is provided with a rectangular through slot, and one end of the product mounting assembly is arranged in the rectangular through slot.

[0012] The first elastic member is a return spring, and the second elastic member is a nitrogen spring.

[0013] Each side punching assembly comprises a fixing plate, a push plate, a pressing plate and a punch, the fixing plate is arranged on one side of the supporting plate, the pressing plate is arranged on one side of the product mounting assembly, the push plate is arranged between the fixing plate and the pressing plate and used for driving the pressing plate.

[0014] The side punching assembly further comprises a plurality of linkage plates, the plurality of linkage plates are arranged between the push plate and the pressing plate and connected with the push plate and the pressing plate, one end of the punch is movably arranged in the linkage plate, and the other end of the punch can be inserted into the product mounting assembly.

[0015] The inside of the fixing plate is provided with a first connecting shaft, and the push plate is movably arranged on the first connecting shaft.

[0016] The push plate is provided with a first inclined pushing surface on the outside, a pressing plate is arranged between the push plate and the fixing plate, the pressing plate is provided with a second inclined pushing surface, and the second inclined pushing surface is connected with the first inclined pushing surface.

[0017] The present application has the following advantages:

[0018] 1、When the mold is closed, the elastic force of the second elastic member is greater than the elastic force of the first elastic member, then the block will press the third inclined sliding block downward, and the first inclined sliding block and the second inclined sliding block will move outward, and then support the product sleeved on the outside of the inclined sliding block, and then the side punching assembly starts to punch, because it is in the supporting state, it can reduce the surface collapse caused by punching, and improve the surface quality.

[0019] 2、Before the mold is closed or after the mold is opened, the block is not connected with the third inclined sliding block, and cannot provide a downward force for it, so the third inclined sliding block receives the upward elastic force of the first elastic member, and the third inclined sliding block moves upward, and then the first inclined sliding block and the second inclined sliding block move inward, which is convenient for sleeving the product on the inclined sliding block, and also convenient for taking down the product.

[0020] 3、The product mounting assembly is provided with side punching assemblies on both sides, so that the two sides of the product can be processed at the same time, and the processing efficiency is improved.

[0021] 4、The product is processed by punching, which can improve the performance of the product.

[0022] 5、Simple structure, and the mold is more convenient to debug. DETAILED DESCRIPTION

[0023] Figure 1 is the overall structure schematic diagram of the present application;

[0024] Figure 2 is the product mounting assembly structure schematic diagram of the present application;

[0025] Figure 3 is the side punching assembly sectional view of the present application;

[0026] Figure 4 is the side view of the lower mold assembly and the upper mold assembly of the present application;

[0027] Figure 5 is the assembly schematic diagram of the lower mold assembly, the upper mold assembly and the product mounting assembly of the present application;

[0028] In the drawing: 100, product mounting assembly; 110, first inclined sliding block; 120, second inclined sliding block; 130, third inclined sliding block; 200, lower mold assembly; 210, lower mold; 220, reset spring; 230, support plate; 240, fixed seat; 241, guide column; 300, upper mold assembly; 310, upper mold; 320, nitrogen gas spring; 330, block; 400, side punching assembly; 410, fixed plate; 411, first connecting shaft; 420, push plate; 430, pressing plate; 440, punch; 450, linkage plate; 460, extrusion plate. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present application and in conjunction with the drawings, the technical solutions of the present application are further described, but the invention is not limited to these embodiments.

[0030] As Figures 1-5 shown, a closed cavity double-sided die-cutting mechanism comprises:

[0031] The product mounting assembly 100 comprises a first inclined slide block 110 and a second inclined slide block 120, and a gap is provided between the first inclined slide block 110 and the second inclined slide block 120. The width of the gap decreases from top to bottom, and a third inclined slide block 130 is arranged in the gap. The product is wrapped on the product mounting assembly 100, and the gap gradually decreases from top to bottom. When the third inclined slide block 130 moves upward, the first inclined slide block 110 and the second inclined slide block 120 will move to the middle due to the larger gap on the upper side, thereby reducing the width of the entire product mounting assembly 100. When the third inclined slide block 130 moves downward, the third inclined slide block 130 will press the first inclined slide block 110 and the second inclined slide block 120, thereby increasing the width of the entire product mounting assembly 100. When the width of the product mounting assembly 100 is reduced, it is convenient to install or remove the product. When the width of the product mounting assembly 100 is increased, the product can be supported, and the surface collapse caused by die-cutting can be reduced.

[0032] The lower die assembly 200 comprises a lower die 210 and a first elastic member arranged above the lower die 210. One end of the first elastic member is connected to the bottom of the third inclined slide block 130. The lower die 210 is a fixed die and remains stationary. The first elastic member provides support for the third inclined slide block 130. Due to the elastic force of the first elastic member, the third inclined slide block 130 will move upward. At this time, the first inclined slide block 110 and the second inclined slide block 120 will move to the middle, the width of the product mounting assembly 100 will decrease, and it will be convenient to remove or install the product.

[0033] The upper die assembly 300 is arranged above the product mounting assembly 100 in a liftable manner, and the upper die assembly 300 comprises an upper die 310, a second elastic member arranged below the upper die 310, and a block 330 connected to the bottom of the second elastic member. When the upper die assembly 300 is combined with the lower die assembly 200, the block 330 abuts against the top of the third inclined slide block 130. The elastic force of the second elastic member is greater than that of the first elastic member. The upper die 310 is a movable die, so that the upper die 310 moves downward during the combining process, and the block 330 and the second elastic member move downward at the same time until the block 330 abuts against the top of the third inclined slide block 130. At this time, the second elastic member continues to provide pressure to the block 330 due to the continuous movement of the upper die 310. When the combining process is completed, the elastic force provided by the second elastic member is greater than that provided by the first elastic member, so that the third inclined slide block 130 moves downward to extrude the first inclined slide block 110 and the second inclined slide block 120 outward, thereby supporting the product. The opening process is the opposite.

[0034] Preferably, the first elastic member is a return spring 220, and the second elastic member is a nitrogen spring 320.

[0035] The side punching assembly 400 is arranged on both sides of the product mounting assembly. After the combining process, the two side punching assemblies 400 punch the product on both sides at the same time. The punching process can improve the production capacity of the product, and at the same time, the product is always in a supporting state during the punching process, which can reduce the surface collapse caused by punching and improve the surface quality of the product.

[0036] The first inclined slide block 110 and the second inclined slide block 120 are respectively provided with a first inclined surface and a second inclined surface on the opposite sides, and the first inclined surface and the second inclined surface are opposite in inclination direction. The third inclined slide block 130 is respectively attached to the first inclined surface and the second inclined surface on the opposite sides. During the opening and combining process, the first inclined surface and the second inclined surface are always attached to the opposite sides of the third inclined slide block 130, only the size of the attachment area is different. When the third inclined slide block 130 moves to the bottom, the attachment area is the largest.

[0037] The lower die assembly 200 further comprises a support plate 230 and a fixed seat 240. The support plate 230 is arranged on the lower die, and the fixed seat 240 is arranged on the support plate 230. One end of the product mounting assembly 100 is arranged in the fixed seat 240, and a guide column 241 is arranged in the fixed seat 240. The guide column 241 penetrates through the third inclined slide block 130, and the third inclined slide block 130 can move up and down along the guide column 241. The guide column 241 is used for limiting the third inclined slide block 130 to move only in the up-down direction, so as to avoid the deviation of the third inclined slide block 130 caused by pressure.

[0038] The fixed seat 240 is provided with a rectangular through slot, and one end of the product mounting assembly 100 is arranged in the rectangular through slot. The fixed seat 240 is used for providing support for the product mounting assembly 100, and the rectangular through slot does not limit the inclined sliding block movement of the product mounting assembly 100.

[0039] Each side punching assembly 400 comprises a fixed plate 410, a push plate 420, a pressing plate 430 and a punch 440. The fixed plate 410 is arranged on one side of the support plate 230, the pressing plate 430 is arranged on one side of the product mounting assembly 100, and the push plate 420 is arranged between the fixed plate 410 and the pressing plate 430 and is used to drive the pressing plate 430. The push plate 420 moves towards the product side and drives the pressing plate 430 to move towards the product side together. The product is fixed by extrusion of the pressing plate 430, and then the product is punched by the punch 440. The side punching assemblies 400 on both sides of the product mounting assembly 100 are the same in structure and are used to punch the product on both sides simultaneously.

[0040] The side punching assembly 400 further comprises a plurality of linkage plates 450. The linkage plates 450 are arranged between the push plate 420 and the pressing plate 430 and are connected with the push plate 420 and the pressing plate 430. One end of the punch 440 is movably arranged in the linkage plate 450, and the other end of the punch 440 can be inserted into the product mounting assembly 100. The linkage plate 450 is used to transmit action, and the punch 440 can be driven to perform punching action by other power members arranged in the linkage plate 450.

[0041] The inside of the fixed plate 410 is provided with a first connecting shaft 411, and the push plate 420 is movably arranged on the first connecting shaft 411. That is, the push plate 420 can move along the axial direction of the connecting shaft. In this embodiment, the axial direction of the connecting shaft is horizontal, and the push plate 420 can move in the horizontal direction and drive the pressing plate 430 to move in the horizontal direction.

[0042] The push plate 420 is provided with a first inclined pushing surface on the outside, and the push plate 420 and the fixed plate 410 are provided with an extrusion plate 460. The extrusion plate 460 is provided with a second inclined pushing surface, and the second inclined pushing surface is in contact with the first inclined pushing surface. In this embodiment, when the extrusion plate 460 moves downward, the push plate 420 moves towards the product direction through the cooperation of the second inclined pushing surface and the first inclined pushing surface, and the movement of the push plate 420 is realized through the extrusion plate 460.

[0043] The application provides a double-sided punching mechanism for a closed cavity, which comprises a product mounting assembly, a first inclined slide block, a second inclined slide block and a third inclined slide block, wherein the third inclined slide block is arranged between the first inclined slide block and the second inclined slide block, the distance between the first inclined slide block and the second inclined slide block is determined by the up-down movement of the third inclined slide block, a first elastic member is arranged on a lower die, and a second elastic member is arranged on an upper die; only the first elastic member acts on the third inclined slide block to make the third inclined slide block move upward and reduce the distance between the first inclined slide block and the second inclined slide block before the upper die and the lower die are closed and after the upper die and the lower die are opened, so that the product is conveniently mounted or removed; after the upper die and the lower die are closed, the second elastic member moves downward with the upper die and transmits the elastic force to the top of the third inclined slide block through a punch, at this time, the elastic force of the second elastic member is greater than that of the first elastic member, so that the third inclined slide block moves downward and increases the distance between the first inclined slide block and the second inclined slide block, thereby supporting the product and reducing the collapse of the product in the punching process, and improving the product quality.

[0044] The technical solutions of the application are described in detail above with reference to the drawings, and the described embodiments are used to help understand the idea of the application. The specific embodiments described herein are only illustrative of the spirit of the application. Those skilled in the art of the application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the application or exceeding the scope defined by the appended claims.

Claims

1. A closed cavity double-sided die cutting mechanism, characterized by, The utility model relates to a product installation assembly, a lower mould assembly, an upper mould assembly and a side punch assembly, and relates to the technical field of moulds. The product installation assembly comprises a first inclined slide block and a second inclined slide block, a gap is arranged between the first inclined slide block and the second inclined slide block, the width of the gap decreases from top to bottom, and a third inclined slide block is arranged in the gap. The lower mould assembly comprises a lower mould and a first elastic member arranged above the lower mould, one end of the first elastic member is connected to the bottom of the third inclined slide block. The upper mould assembly is arranged above the product installation assembly in a liftable manner, and comprises an upper mould, a second elastic member arranged below the upper mould and a punch connected to the bottom of the second elastic member, and when the upper mould assembly and the lower mould assembly are closed, the punch abuts against the top of the third inclined slide block, and the elastic force of the second elastic member is greater than the elastic force of the first elastic member. Two side punch assemblies are arranged on the two sides of the product installation assembly respectively. The lower mould assembly further comprises a support plate and a fixing seat, the support plate is arranged on the lower mould, the fixing seat is arranged on the support plate, and one end of the product installation assembly is arranged in the fixing seat. Each side punch assembly comprises a fixing plate, a push plate, a pressing plate and a punch, the fixing plate is arranged on one side of the support plate, the pressing plate is arranged on one side of the product installation assembly, and the push plate is arranged between the fixing plate and the pressing plate and used for driving the pressing plate to move towards the product. The side punch assembly further comprises a plurality of linkage plates, the plurality of linkage plates are arranged between the push plate and the pressing plate and connected to the push plate and the pressing plate, one end of the punch is movably arranged in the linkage plate, and the other end of the punch is insertable into the product installation assembly. The opposite sides of the first inclined slide block and the second inclined slide block are respectively provided with a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are oppositely inclined.

2. The closed cavity double-sided die-cutting mechanism according to claim 1, wherein, A guide column is arranged in the fixing seat, the guide column passes through the third inclined slide block, and the third inclined slide block can move up and down along the guide column.

3. The closed cavity double-sided die cutting mechanism according to claim 1, wherein, A rectangular through groove is arranged in the fixing seat, and one end of the product installation assembly is arranged in the rectangular through groove.

4. The closed cavity double-sided die cutting mechanism according to claim 1, wherein, The first elastic member is a return spring, and the second elastic member is a nitrogen spring.

5. The closed cavity double-sided die cutting mechanism according to claim 1, wherein, A first connecting shaft is arranged in the inner side of the fixing plate, and the push plate is movably arranged on the first connecting shaft.

6. A closed cavity double-sided die-cutting mechanism according to claim 5, wherein, A first inclined push surface is arranged on the outer side of the push plate, an extrusion plate is arranged between the push plate and the fixing plate, a second inclined push surface is arranged on the extrusion plate, and the second inclined push surface is connected to the first inclined push surface.

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