CN112828150B

CN112828150B - High-necking die

Info

Publication number: CN112828150B
Application number: CN202011571648.6A
Authority: CN
Inventors: 王聪
Original assignee: Dongguan Xinmeiyang Technology Co ltd
Current assignee: Dongguan Xinmeiyang Technology Co ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2022-12-16
Anticipated expiration: 2040-12-27
Also published as: CN112828150A

Abstract

The invention provides a high necking die which comprises an upper die assembly and a lower die assembly, wherein the lower die assembly comprises a lower die base, a lower die forming block, a lower die sliding block assembly and a lower die sliding block resetting assembly corresponding to the lower die sliding block assembly. The upper die assembly comprises an upper die base, an upper base plate, a stripper plate movably connected with the upper base plate and capable of moving up and down along the vertical direction, a slider base, an upper die slider assembly, a first slotting tool assembly and a second slotting tool assembly. The first slotting tool component is used for driving the upper die sliding block component to move; the second slotting tool component is used for driving the lower die sliding block component to move. And when the die is closed, the upper die sliding block assembly, the lower die forming block and the lower die sliding block assembly form a die cavity together. The high necking die can complete all necking forming only by one process, and can not form joint marks on the surface of a product, thereby improving the appearance quality of the product, simplifying the necking forming process, greatly improving the production efficiency and effectively reducing the production cost.

Description

High-necking die

Technical Field

The invention relates to the technical field of dies, in particular to a high-shrinkage die.

Background

In recent years, with the continuous development of electronic technology, the use of electronic devices is becoming more and more popular, and the electronic devices are being developed toward convenient, multifunctional and beautiful designs. The appearance design of the electronic equipment is mainly the design of the cover plate of the electronic equipment. Taking a mobile phone as an example, the mobile phone cover plate not only plays a role in protecting parts inside the mobile phone, but also plays a role in beautifying and decorating the mobile phone, and the design of the mobile phone cover plate with excellent decoration effect can not only increase the value of the mobile phone, but also improve the use experience of users, and increase the selection range of the users on the appearance of the mobile phone, so that the mobile phone is popular with more users.

The mobile phone appearance piece is an indispensable structure of a mobile phone and mainly comprises a front cover, a middle frame and a rear cover. As users pay more and more attention to the appearance of the product, the appearance quality of the appearance piece is particularly important. For example, the three side surfaces of the appearance cover plate are required to be subjected to necking treatment so as to cover the product, and the internal structure of the product is better protected. Usually, when the cover plate is subjected to necking treatment, three sets of dies are required to be prepared, and necking treatment is performed on four corners, two opposite sides and the other single side respectively, so that the investment cost of the dies is high, three processes are required to be completed, the processes are complex, the production efficiency is low, and the appearance piece can generate multiple joint marks at the intersection of the three necking processes by three-time forming, the appearance quality of the appearance piece is greatly influenced, the good sensitivity of a user is reduced, and the competitiveness of a product is reduced.

Disclosure of Invention

Therefore, the high-necking die provided by the invention is very easy to open and close, all necking forming can be completed only by one process, joint marks cannot be formed on the surface of a product, the appearance quality of the product is improved, the necking forming process is simplified, the production efficiency is greatly improved, and the production cost is effectively reduced.

In order to realize the purpose, the invention adopts the technical scheme that:

a high-shrinkage die comprises an upper die assembly and a lower die assembly, wherein the lower die assembly comprises a lower die base, a lower die forming block fixedly connected with the lower die base, a lower die sliding block assembly arranged around the lower die forming block and slidably connected with the lower die base, and a lower die sliding block resetting assembly fixedly arranged on the lower die base and corresponding to the lower die sliding block assembly;

the upper die assembly comprises an upper die base, an upper base plate fixedly connected with the upper die base, a stripper plate movably connected with the upper base plate and capable of moving up and down along the vertical direction, a slider seat fixed on the stripper plate, an upper die slider assembly arranged around the slider seat and slidably connected with the slider seat, and a first slotting tool assembly and a second slotting tool assembly fixedly connected with the upper die assembly; the first slotting tool component corresponds to the upper die slide block component in position and is used for driving the upper die slide block component to move; the second slotting tool component corresponds to the lower die slide block component in position and is used for driving the lower die slide block component to move;

and when the die is closed, the upper die sliding block assembly, the lower die forming block and the lower die sliding block assembly form a die cavity together.

The technical scheme of the invention is further improved as follows:

the upper die assembly further comprises an upper clamping plate and a stripper plate which are sequentially arranged between the upper base plate and the stripper plate; the upper clamping plate is fixedly connected with the upper base plate, the stripper plate is fixedly connected with the stripper plate, and the stripper plate is movably connected with the upper clamping plate and can move up and down together with the upper clamping plate along the vertical direction; the sliding block seat is fixed below the stripper plate.

The lower die assembly further comprises a lower die plate arranged between the lower die base and the lower die forming block, and the lower die plate is fixedly connected with the lower die base and the lower die forming block respectively.

The upper die sliding block assembly comprises four first sliding blocks arranged at the corners of the sliding block seat, second sliding blocks respectively arranged on two opposite side walls of the sliding block seat and third sliding blocks respectively arranged on the outer sides of the other two opposite side walls of the sliding block seat; the side wall of the sliding block seat connected with the two second sliding blocks is an inclined surface, a first sliding rail is arranged on the side wall, and when the second sliding blocks move obliquely upwards along the first sliding rail, the two second sliding blocks are away from each other; the first sliding blocks are connected to the second sliding blocks in a sliding mode, the side wall, connected with the first sliding blocks, of the second sliding blocks is an inclined surface, a second sliding rail is arranged on the side wall, and when the first sliding blocks move upwards obliquely along the second sliding rail, the four first sliding blocks are far away from each other; and a third sliding rail is fixedly arranged on the stripper plate, and the third sliding block can slide along the third sliding rail so as to approach or separate from each other in the horizontal direction.

The first slotting tool component comprises two first slotting tools and a first connecting piece for fixing the first slotting tools; the first slotting tool is arranged between the third sliding block and the sliding block seat and used for driving the third sliding block to slide along the third sliding rail.

The high-necking die further comprises an upper die sliding block component resetting device used for enabling the upper die sliding block component to reset.

The upper die assembly is provided with a guide post, the lower die assembly is correspondingly provided with a guide hole, and the guide post is positioned in the guide hole during die assembly.

The stripper plate is provided with equal-height sleeve mounting holes, equal-height sleeves are fixedly connected in the mounting holes, limiting holes are formed in positions, corresponding to the equal-height sleeves, of the upper padding plate, the equal-height sleeves are used for movably connecting the stripper plate with the upper padding plate and limiting and guiding the stripper plate when the stripper plate moves up and down along the limiting holes.

The lower die sliding block assembly comprises fourth sliding blocks arranged at the peripheries of four corners of the lower die forming block, fifth sliding blocks respectively arranged at the peripheries of two opposite side walls of the lower die forming block and sixth sliding blocks respectively arranged at the peripheries of the other two opposite side walls of the lower die forming block; slide block tracks are respectively arranged at the positions of the lower die base corresponding to the lower die slide block component; the fourth slider, the fifth slider and the sixth slider can respectively slide along corresponding slider tracks.

The lower die sliding block resetting component is arranged on one side, away from the lower die forming block, of the lower die sliding block component and is arranged at an interval with the lower die sliding block component; the lower die sliding block resetting component comprises a resetting block component and a resetting rod component arranged on the resetting block component; the reset block assembly comprises a fourth slide block reset block corresponding to the fourth slide block, a fifth slide block reset block corresponding to the fifth slide block and a sixth slide block reset block corresponding to the sixth slide block; the reset rod assembly comprises a reset rod and a reset spring sleeved on the reset rod; the positions, corresponding to the reset rods, on the reset blocks are respectively provided with reset rod positioning holes; the reset spring is abutted against the outer wall of one side, away from the lower die forming block, of the reset block assembly; the reset rod penetrates through the reset spring, one end of the reset rod is abutted to the reset spring, and the other end of the reset rod is fixedly connected with the corresponding lower die sliding block assembly.

According to the technical scheme, the upper die assembly of the high-shrinkage die disclosed by the invention is provided with the upper die sliding block assembly and the first slotting tool assembly, so that the die opening and die closing of the upper die assembly are realized; the lower die assembly realizes die opening and die closing of the lower die assembly by arranging the lower die forming block, the lower die sliding block assembly and the second slotting tool assembly. The upper die sliding block assembly, the lower die forming block and the lower die sliding block assembly form a die cavity together. The design of the sliding block combination not only realizes the simplification of the necking process, reduces the three original processes to the current process, but also integrally forms the necking, does not cause the surface of the appearance piece to generate joint traces, greatly improves the aesthetic degree of the appearance piece, and ensures the product quality of the appearance piece. And the combination of the plurality of sliding blocks also makes the demoulding of the product very simple, so that the maintenance and repair of the mould are easier, if a certain sliding block is damaged, only the individual damaged sliding block needs to be replaced, and the whole set of mould does not need to be replaced, thereby saving time, saving cost, prolonging the service life of the mould and greatly improving the production efficiency of the product.

Drawings

Fig. 1 is a schematic view of the general structure of a high necking die according to an embodiment of the present invention.

Fig. 2 is a schematic front sectional view of a high shrinkage mold according to an embodiment of the present invention.

FIG. 3 is a schematic side sectional view of a high necking die according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an appearance member according to an embodiment of the present invention.

FIG. 5 is a schematic view of a slider seat according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a second slider according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a third slider track block according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a third slider according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of a first slotting cutter according to an embodiment of the invention.

Fig. 10 is a schematic structural diagram of a first slider according to an embodiment of the present invention.

FIG. 11 is a top view of a lower die slide assembly and a lower die slide reset assembly in accordance with an embodiment of the present invention.

The meaning of the reference symbols in the drawings is:

11-an upper die holder; 12-upper backing plate; 13-upper splint; 14-backing off; 15-stripping plate; 17-a guide post; 18-upper die slide block assembly; 19-contour sleeves; 110-a first spring; 111-a first slotting cutter; 112-a second slotting cutter; 113-a fixed block; 114-a third spring; 115-slider seat; 116-a third slider; 117-first slider; 118-a second slider; 1181-a second sliding track; 119-a third slide rail; 21-a lower template; 22-a lower die holder; 23-lower die slide block assembly; 231-a slider body; 232-a slider backplane; 241-a reset block assembly; 242-a reset rod assembly; 25-lower die forming block; 30-a face piece; 1151-first slide rail limit; 1152-a first sled; 2311-fifth slider; 2312-a fourth slider; 2313-sixth slider; 2411-a fifth slider reset block; 2412-a fourth slider reset block; 2413-sixth slide block reset block.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 to 3 are schematic structural views of a high-shrinkage die according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of an appearance member 30 to be necked down according to an embodiment of the present invention, wherein the length of the product is 243.2mm, the width is 155mm, the height of the frame to be necked down is 6.5mm, the forming thickness of the product material is 1.2mm, and the four upturned edges thereof are folded to be the portions to be necked down.

Example 1: as shown in fig. 1, the high necking die of the present embodiment includes an upper die assembly and a lower die assembly. The lower die assembly comprises a lower die base 22, a lower die plate 21 fixedly connected with the lower die base 22, a lower die forming block 25 fixedly connected with the lower die plate 21, a lower die sliding block assembly 23 arranged around the lower die forming block 25 and slidably connected with the lower die plate 21, and a lower die sliding block resetting assembly fixedly arranged on the lower die plate 21 and corresponding to the lower die sliding block assembly 23.

As shown in fig. 11, the lower mold slide assembly 23 includes four fourth slides 2312 disposed at the peripheries of four corners of the lower mold block 25, two fifth slides 2311 disposed at the peripheries of two opposite sidewalls of the lower mold block 25, respectively, and two sixth slides 2313 disposed at the peripheries of the two remaining opposite sidewalls of the lower mold block 25, respectively; slide block tracks are respectively arranged at the positions of the lower template 21 corresponding to the fourth slide block 2312, the fifth slide block 2311 and the sixth slide block 2313; and the slide block track is far away from one end of the corresponding slide block and is respectively provided with a slide block limit. The fourth slider 2312, the fifth slider 2311 and the sixth slider 2313 can slide along the corresponding slider tracks in the horizontal direction within the range limited by the slider limit respectively. The fourth slider 2312, the fifth slider 2311 and the sixth slider 2313 are all in split type design and respectively comprise a slider body 231 and a slider back plate 232, the slider body 231 is fixedly connected with the slider back plate 232 through bolts, and the slider body 231 and the slider back plate 232 integrally slide along the slider tracks.

The lower die sliding block resetting component is fixed on the lower die plate 21 through bolts, is positioned on one side, away from the lower die forming block 25, of the lower die sliding block component 23, and is arranged at an interval with the lower die sliding block component 23. The lower die slide reset assembly includes a reset block assembly 241 and a reset rod assembly 242 disposed on the reset block assembly 241. The reset block assembly 241 includes a fourth slider reset block 2412 corresponding to the fourth slider 2312, a fifth slider reset block 2411 corresponding to the fifth slider 2311, and a sixth slider reset block 2413 corresponding to the sixth slider 2313. The fourth slider reset 2412, which corresponds to the fourth slider reset 2412, is of a one-piece design, i.e., one fourth slider reset 2412 for each fourth slider 2312. The fifth slider reset block 2411 and the sixth slider reset block 2413 are designed as double blocks, that is, each fifth slider 2311 corresponds to two fifth slider reset blocks 2411, and the two fifth slider reset blocks 2411 respectively correspond to positions of the fifth slider 2311 close to both ends in the length direction. Each of the sixth sliders 2313 corresponds to two sixth slider reset blocks 2413, and the two sixth slider reset blocks 2413 respectively correspond to positions of the sixth slider 2313 near both ends in the longitudinal direction. The reset rod assembly 242 includes a reset rod and a reset spring sleeved on the reset rod. The positions, corresponding to the reset rods, on the reset blocks are respectively provided with reset rod positioning holes; the reset rod comprises a rod cap and a rod part connected with the rod cap, the diameter of the rod cap is larger than that of the rod part, a thread is arranged on one section of the rod part, which is far away from the rod cap, and the rod part between the thread and the rod cap is a polished rod. One end of the reset spring is abutted against the rod cap, and the other end of the reset spring is abutted against the outer wall of one side of the reset block component 241 far away from the lower die forming block 25. The rod part of the reset rod sequentially penetrates through the reset spring and the reset rod positioning hole and is fixedly connected with the corresponding lower die sliding block assembly 23 through threads at the end part. The direction of the reset rod positioning hole is the same as the movement direction of the corresponding lower die slide block assembly 23. The return spring is always in a compressed state. When the mold is closed, the lower mold slide assembly 23 slides along the slide rail in the direction of closing each other under the driving of the second slotting tool 112, and the reset rod moves along the reset rod positioning hole in the direction of the lower mold forming module 25 under the driving of the corresponding slide assembly. During die sinking, because reset spring's restoring force effect, the release link drives corresponding lower mould sliding block set 23 along the slider track slides to the direction of keeping away from each other, and when lower mould sliding block set 23 and slider spacing contact, lower mould sliding block set 23 stopped moving, and lower mould sliding block set 23 returns initial condition.

The upper die assembly comprises an upper die base 11, an upper base plate 12 fixedly connected with the upper die base 11, an upper clamping plate 13 fixedly connected with the upper base plate 12, a stripper plate 14 movably connected with the upper clamping plate 13 and capable of moving up and down along the vertical direction, a stripper plate 15 with a mouth part formed in the middle of the stripper plate 14 and fixedly connected with the stripper plate 14, a slider seat 115 fixed below the stripper plate 14 and located at the mouth part of the stripper plate, an upper die assembly 18 arranged around the slider seat 115 and slidably connected with the slider seat 115, and a first slotting tool assembly and a second slotting tool assembly fixedly connected with the upper base plate 12.

The first slotting tool component corresponds to the third slide block component in position and is used for driving the upper die slide block component 18 to move; the second slotting tool assembly corresponds to the lower die slide assembly 23 in position and is used for driving the lower die slide assembly 23 to move.

The upper die slide block assembly 18 includes four first slides 117 disposed at corners of the slide block seat 115, two second slides 118 disposed on two opposite side walls of the slide block seat 115, and two third slides 116 disposed outside the other two opposite side walls of the slide block seat 115. As shown in fig. 5, the side wall of the slider seat 115 connected to the two second sliders 118 is an inclined surface, and the side wall is provided with a first slide rail 1152 and a first slide rail limit 1151, the second sliders 118 can slide along the first slide rail 1152, and when the second sliders 118 move obliquely upward along the first slide rail 1152, the two second sliders 118 are away from each other. The first slide limit 1151 is used to limit the sliding travel of the second slide 118. The first slider 117 is slidably connected to the second slider 118, as shown in fig. 6 and 10, a side wall of the second slider 118 connected to the first slider 117 is an inclined surface, and a second slide rail 1181 and a second slide rail limit are arranged on the side wall, the first slider 117 can slide along the second slide rail 1181, and when the first slider 117 moves obliquely upward along the second slide rail 1181, the four first sliders 117 are away from each other. The second slide limit is used to limit the sliding travel of the first slider 117. A third slide block track block is fixedly arranged at a position of the stripper plate 15 corresponding to the third slide block 116, as shown in fig. 7 and 8, a third slide rail 119 and a third slide rail limit are correspondingly arranged on the third slide block track block, and the third slide block 116 can slide along the third slide rail 119 to realize mutual approaching or mutual departing in the horizontal direction. The third slide rail 119 is limited to limit the sliding stroke of the third slide block 116.

The first slotting tool assembly comprises two first slotting tools 111 and a first connecting piece for fixing the first slotting tools 111; the first connecting piece is a bolt. The upper portion of the first slotting tool 111 is fixedly connected with the upper backing plate 12, the first slotting tool 111 is arranged between the third slider 116 and the slider seat 115, through holes are respectively formed in the positions of the upper clamping plate 13 and the stripper plate 14 corresponding to the first slotting tool 111, and when the mold is opened and closed, the first slotting tool 111 can penetrate through the through holes and is used for driving the third slider 116 to slide along the third slide rail 119. As shown in fig. 9, the side wall of the first slotting tool 111 close to the third sliding block 116 is step-shaped, the upper portion of the side wall protrudes from the lower portion of the side wall, and the transition position between the side wall and the side wall adopts an inclined surface transition, the side wall of the third sliding block 116 close to the first slotting tool 111 is provided with an inclined surface corresponding to the inclined surface, and the inclined surface is in a downwardly inclined lead angle shape, so that the first slotting tool 111 drives the third sliding block 116 to move during mold closing and mold opening.

The second slotting tool assembly comprises a second slotting tool 112 and a second connecting piece used for fixing the second slotting tool 112, and the second connecting piece is a bolt. The number and the positions of the second blades 112 correspond to those of the reset block components 241. The upper part of the second slotting tool 112 is fixedly connected with the upper backing plate 12, the second slotting tool 112 is positioned on the upper die assembly between the lower die slide assembly 23 and the reset block assembly 241, through holes are respectively formed in the positions of the upper clamping plate 13 and the stripper plate 14 corresponding to the second slotting tool 112, and when the die is opened and closed, the second slotting tool 112 can penetrate through the through holes and is used for driving the lower die slide assembly 23 to slide along the slide rail. The side wall of the second slotting tool 112 close to the lower die sliding block assembly 23 is step-shaped, the upper part of the side wall protrudes out of the lower part of the side wall, and the transition position of the side wall and the side wall adopts slope transition, the side wall of the lower die sliding block assembly 23 close to the second slotting tool 112 is provided with a corresponding inclined plane, and the inclined plane is in a downwardly inclined lead angle shape, so that the second slotting tool 112 drives the lower die sliding block assembly 23 to move during die closing and die opening.

The high necking die of the present embodiment further includes an upper die slide assembly resetting device for resetting the upper die slide assembly 18. The upper die slide assembly returning device includes a first spring 110 for returning the stripper plate 14, a second spring and a jack for returning the first slide 117 and the second slide 118, and a third spring 114 for returning the third slide 116.

The upper surface of the upper backing plate 12 of this embodiment is evenly provided with ten first springs 110, the positions of the upper die base 11 corresponding to the first springs 110 are respectively provided with first spring mounting holes, the first spring mounting holes are blind holes, and the first springs 110 are always in a compressed state.

The upper surfaces of the first slider 117 and the second slider 118 of this embodiment are respectively provided with a lift pin, the lift pin includes a lift pin cap portion and a lift pin rod portion, the upper surface of the lift pin cap portion abuts against the second spring, and the lower surface of the lift pin cap portion abuts against the upper surface of the backing plate 14 in a state where the lower portion is not under stress. And second spring mounting holes are formed in the positions, corresponding to the second springs, of the upper die base 11, the upper backing plate 12 and the upper clamping plate 13, and the second springs are arranged in the second spring mounting holes. The second spring is always in a compressed state.

The outside that third slider 116 kept away from slider seat 115 is equipped with fixed block 113, fixed block 113 top with take off backplate 14 fixed connection, fixed block 113 is close to third slider 116 goes up to seted up third spring mounting hole along the sliding direction of third slider 116 on the lateral wall, the third spring mounting hole is the blind hole, third spring 114 is located in the third spring mounting hole. The third spring 114 abuts against the third slider 116. The third spring 114 is always in a compressed state.

Six guide posts 17 are fixedly arranged on the upper die assembly, guide holes are correspondingly formed in the lower die assembly, and the guide posts 17 are located in the guide holes during die assembly. The guide posts 17 and the guide holes are arranged, so that the positioning between the upper die and the lower die is more accurate.

The stripper plate 15 is provided with equal-height sleeve 19 mounting holes, threads are arranged in the mounting holes, the bolt is fixedly connected with the stripper plate 15 through the threads, and the equal-height sleeve 19 is sleeved on the bolt. The equal-height sleeve 19 comprises a sleeve cap and a sleeve rod, and one end of the sleeve cap is arranged upwards during installation. The upper padding plate 12 is provided with a limiting hole at a position corresponding to the equal-height sleeve 19, when the backing plate 14 moves upwards, the equal-height sleeve 19 rises along with the backing plate 14 along the limiting hole, when the backing plate 14 moves downwards, the equal-height sleeve 19 descends along with the backing plate 14 along the limiting hole until the sleeve cap abuts against the bottom of the limiting hole, and the backing plate 14 stops moving. The equal-height sleeve 19 is used for movably connecting the stripper plate 15 with the upper clamping plate 13 and is used for limiting and guiding the stripper plate 15 when moving up and down along the limiting hole direction.

In the closed state, the upper mold slide assembly 18, the lower mold forming block 25 and the lower mold slide assembly 23 together form a mold cavity.

The working principle of the high-necking die of the embodiment is as follows: when the mold is closed, the upper mold assembly moves downward, the first slide block 117 first contacts the appearance piece 30 to be necked and stops moving, and the rest upper mold assemblies continue to move downward. The second slide block 118 moves obliquely downward along the first slide rail 1152, and when the bottom of the first slide block 117 is flush with the bottom of the second slide block 118, the second slide block 118 also stops moving, and the rest of the upper die assemblies continue to move downward. The slider holder 115 continues to slide obliquely downward along the second slide rail 1181, and when the bottoms of the first slider 117, the second slider 118, and the third slider 116 are flush, the slider holder 115 stops moving. The upper die base 11 drives the first slotting tool 111 fixedly connected with the upper die base to continue moving downwards, the two third sliding blocks 116 slide along the directions away from each other along the third sliding rails 119 under the outward acting force of the side wall inclined surfaces of the first slotting tool 111 until the sliding in place is limited by the third sliding rails, and the whole upper die assembly stops moving. Meanwhile, the lower mold slide assembly 23 is driven by the driving force of the second slotting tool 112 to slide along the corresponding slide rails in the direction of approaching each other until the upper mold assembly is closed to form a whole, and the whole upper mold assembly stops moving. The first slide block 117, the second slide block 118, the third slide block 116, the lower mold slide assembly 23, and the lower mold molding block 25 together form a cavity for necking the exterior member 30.

When the mold is opened, the upper mold assembly moves upward, and initially, the stripper plate 14 remains stationary due to the downward thrust of the first spring 110, while the first slide 117 and the second slide 118 also remain stationary. The third sliding blocks 116 gradually lose the action of the lateral force of the first slotting tool 111, and are simultaneously under the pressure action of the third spring 114, so that the two third sliding blocks 116 move towards the direction of approaching each other along the third sliding rail 119 until the third sliding blocks slide in place. When the upper surface of the upper clamping plate 13 abuts against the sleeve cap of the equal-height sleeve 19, the backing plate 14 drives the slider seat 115 fixedly connected with the backing plate to start to move upwards, the second slider 118 is pushed downwards by the second spring and continues to keep a static state together with the first slider 117, and when the second slider 118 is in limit contact with the second sliding rail, the second slider 118 moves upwards along with the slider seat 115. The first slider 117 continues to remain stationary under the downward force of the second spring until the first slider 117 contacts the first rail limit 1151. Meanwhile, the second slotting tool 112 moves upwards, and the lower die slide assembly 23 moves along the corresponding slide rail in the direction away from each other under the action of the tension of the return spring until the lower die slide assembly 23 is in limit contact with the slide, and the lower die slide assembly 23 stops moving. The whole demolding process is finished, and the upper die assembly and the lower die assembly are both restored to the initial state.

The high throat mould of this embodiment can make a plurality of positions that need the throat of outward appearance piece only can accomplish the throat process through one set of mould, the throat process has been simplified greatly, the production efficiency of throat technology has been improved, and can not produce the seam in the throat junction, make outward appearance piece more pleasing to the eye, the quality obtains guaranteeing, mould overall structure is simple and easy, easy maintenance, production and cost of maintenance are low, a plurality of parts are split type design, be favorable to changing alone when single part damages, and drawing of patterns process is simple, and is effective. The appearance piece prepared by the high-necking die has the advantages that the necking process is formed in one step, no joint mark exists, and the product quality is effectively guaranteed.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a high necking die, includes mould assembly and lower mould assembly, its characterized in that: the lower die assembly comprises a lower die seat, a lower die forming block fixedly connected with the lower die seat, a lower die sliding block assembly arranged around the lower die forming block and connected with the lower die seat in a sliding manner, and a lower die sliding block resetting assembly fixedly arranged on the lower die seat and corresponding to the lower die sliding block assembly;

the upper die assembly comprises an upper die base, an upper base plate fixedly connected with the upper die base, a stripper plate movably connected with the upper base plate and capable of moving up and down in the vertical direction, a slider seat fixed on the stripper plate, an upper die slider assembly arranged around the slider seat and slidably connected with the slider seat, and a first slotting tool assembly and a second slotting tool assembly fixedly connected with the upper die assembly; the first slotting tool component corresponds to the upper die sliding block component in position and is used for driving the upper die sliding block component to move; the second slotting tool component corresponds to the lower die sliding block component in position and is used for driving the lower die sliding block component to move;

the upper die sliding block assembly comprises four first sliding blocks arranged at the corners of the sliding block seat, second sliding blocks respectively arranged on two opposite side walls of the sliding block seat and third sliding blocks respectively arranged on the outer sides of the other two opposite side walls of the sliding block seat; the side wall of the sliding block seat connected with the two second sliding blocks is an inclined surface, a first sliding rail is arranged on the side wall, and when the second sliding blocks move obliquely upwards along the first sliding rail, the two second sliding blocks are away from each other; the first sliding block is connected with the second sliding block in a sliding mode, the side wall, connected with the first sliding block, of the second sliding block is an inclined surface, a second sliding rail is arranged on the side wall, and when the first sliding block moves obliquely upwards along the second sliding rail, the four first sliding blocks are far away from each other; a third slide rail is fixedly arranged on the stripper plate, and the third slide block can slide along the third slide rail so as to realize mutual approaching or mutual distancing in the horizontal direction;

2. The high necking die of claim 1, wherein: the upper die assembly further comprises an upper clamping plate and a stripper plate which are sequentially arranged between the upper base plate and the stripper plate; the upper clamping plate is fixedly connected with the upper base plate, the stripper plate is fixedly connected with the stripper plate, and the stripper plate is movably connected with the upper clamping plate and can move up and down together with the upper clamping plate along the vertical direction; the sliding block seat is fixed below the stripper plate.

3. The high necking die of claim 1, wherein: the lower die assembly further comprises a lower die plate arranged between the lower die base and the lower die forming block, and the lower die plate is fixedly connected with the lower die base and the lower die forming block respectively.

4. The high necking die of claim 1, wherein: the first slotting tool component comprises two first slotting tools and a first connecting piece for fixing the first slotting tools; the first slotting tool is arranged between the third sliding block and the sliding block seat and used for driving the third sliding block to slide along the third sliding rail.

5. The high necking die of claim 1, wherein: the high-necking die further comprises an upper die sliding block component resetting device used for enabling the upper die sliding block component to reset.

6. The high necking die of claim 1, wherein: the upper die assembly is provided with a guide post, the lower die assembly is correspondingly provided with a guide hole, and the guide post is positioned in the guide hole during die assembly.

7. The high necking die of claim 1, wherein: the stripper plate is provided with equal-height sleeve mounting holes, equal-height sleeves are fixedly connected in the mounting holes, limiting holes are formed in positions, corresponding to the equal-height sleeves, of the upper base plate, the equal-height sleeves are used for movably connecting the stripper plate with the upper base plate and limiting and guiding the stripper plate when the stripper plate moves up and down along the direction of the limiting holes.

8. The high necking die of claim 1, wherein: the lower die sliding block assembly comprises fourth sliding blocks arranged at the peripheries of four corners of the lower die forming block, fifth sliding blocks respectively arranged at the peripheries of two opposite side walls of the lower die forming block and sixth sliding blocks respectively arranged at the peripheries of the other two opposite side walls of the lower die forming block; slide block tracks are respectively arranged at the positions of the lower die seat corresponding to the lower die slide block component; the fourth slider, the fifth slider and the sixth slider can respectively slide along corresponding slider tracks.

9. A high-shrink mold according to claim 8, wherein: the lower die sliding block resetting component is arranged on one side, away from the lower die forming block, of the lower die sliding block component and is arranged at an interval with the lower die sliding block component; the lower die slide block resetting assembly comprises a resetting block assembly and a resetting rod assembly arranged on the resetting block assembly; the reset block assembly comprises a fourth slide block reset block corresponding to the fourth slide block, a fifth slide block reset block corresponding to the fifth slide block and a sixth slide block reset block corresponding to the sixth slide block; the reset rod assembly comprises a reset rod and a reset spring sleeved on the reset rod; the positions, corresponding to the reset rods, on the reset blocks are respectively provided with reset rod positioning holes; the reset spring is abutted against the outer wall of one side of the reset block assembly, which is far away from the lower die forming block; the reset rod penetrates through the reset spring, one end of the reset rod is abutted to the reset spring, and the other end of the reset rod is fixedly connected with the corresponding lower die sliding block component.