A lower shell trimming die

Abstract

The utility model discloses a lower casing trimming die, including upper die subassembly and lower die subassembly, upper die subassembly includes the upper die seat, upper backing plate, pressing material core and upper die cutter that set gradually from top to bottom, and the upper die seat is assembled with the outer guide sleeve, the pressing material core is connected the upper die seat through the spring, the lower die subassembly sets gradually from bottom to top the lower die seat, lower backing plate and positioning convex die, and the lower backing plate is assembled with the outer guide column of adapting to the outer guide sleeve, and the positioning convex die sets on the lower backing plate, and the lower die cutter of adapting to the upper die cutter is equipped with on the outside of positioning convex die, the shape of pressing material core and positioning convex die is adapted, and the product is restricted between pressing material core and positioning convex die. The lower casing trimming die of the utility model can effectively solve the traditional die problem, can adapt to the pressing material core and positioning convex die of product shape, increase the contact area, strengthen the constraint, avoid the product displacement when trimming, improve the trimming precision, and avoid the product to be stuck on the upper die cutter, do not need to peel off manually after trimming.

Description

Technical Field

[0001] This utility model relates to the field of trimming molds. More specifically, this utility model relates to a trimming mold for a lower shell. Background Technology

[0002] The molds used in the current shell trimming process have several problems. Traditional molds have simple positioning structures for the product, mostly using a single contact surface, resulting in poor fit with the product. During trimming, external forces can easily cause product displacement, leading to dimensional deviations and affecting product accuracy. This is because the positioning components are not fully adapted to the internal and external shapes of the product, resulting in a small contact area and insufficient constraint. After trimming, the product is prone to getting stuck on the upper mold cutter, requiring manual cleaning and extending the production cycle. This is because there is a lack of a reliable product release structure, which cannot provide stable thrust for the product when the mold opens. Utility Model Content

[0003] In order to achieve these objectives and other advantages according to the present invention, a preferred embodiment of the present invention provides a lower shell trimming mold, including an upper mold assembly and a lower mold assembly; The upper mold assembly includes an upper mold base, an upper pad, a pressure core, and an upper mold cutter arranged sequentially from top to bottom. An outer guide sleeve is mounted on the upper mold base. The upper pad is connected to the upper mold base, and an equal-height sleeve is connected to the upper pad. The pressure core is slidably disposed in the equal-height sleeve. A spring is installed on the side of the upper pad facing the pressure core. The lower mold assembly consists of a lower mold base, a lower pad, and a positioning punch arranged sequentially from bottom to top. The lower pad is equipped with an outer guide post adapted to the outer guide sleeve. The positioning punch is disposed on the lower pad, and a lower mold cutter adapted to the upper mold cutter is provided on the outside of the positioning punch. The shape of the pressure core and the positioning punch are adapted to each other, and the product is constrained between the pressure core and the positioning punch.

[0004] Preferably, the lower mold assembly further includes an inner guide post, one end of which is fixed to the lower mold base, and the other end is disposed toward the upper mold cutter.

[0005] Preferably, the number of the outer guide post and the outer guide sleeve are both 2-4, and they are symmetrically distributed along the central axis of the mold.

[0006] Preferably, the lower end face of the pressure core is provided with an arc-shaped positioning groove that matches the outer surface of the product, and the outer surface of the positioning punch is an arc-shaped structure that matches the inner surface of the product, so that the product is completely fitted and restricted, and displacement is avoided during edge cutting.

[0007] Preferably, the cutting edges of both the upper die cutter and the lower die cutter are annular structures, and the contact surfaces of the cutting edges are inclined shearing surfaces of 30°-60°.

[0008] Preferably, the number of springs is 2-4, and they are evenly distributed along the circumference of the pressure core.

[0009] Preferably, the lower die cutter and the lower pad are detachably connected.

[0010] The present invention has at least the following beneficial effects: The lower shell trimming mold of the present invention can effectively solve the problems of traditional molds. It can adapt the pressing core and positioning punch to the shape of the product, increase the contact area, strengthen the constraint, avoid product displacement during trimming, improve trimming accuracy, and prevent the product from getting stuck on the upper mold cutter, eliminating the need for manual peeling after trimming.

[0011] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the lower shell cutting mold in this utility model. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0014] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0015] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0016] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0017] like Figure 1 As shown, a preferred embodiment of the present invention provides a lower shell trimming mold, including an upper mold assembly and a lower mold assembly; The upper mold assembly includes an upper mold base 1, an upper pad 2, a pressure core 3, and an upper mold cutter 4 arranged sequentially from top to bottom. An outer guide sleeve 5 is mounted on the upper mold base 1. The upper pad 2 is connected to the upper mold base 1, and an equalizing sleeve 13 is connected to the upper pad 2. The pressure core 3 is slidably disposed in the equalizing sleeve 13 and will not fall off. The equalizing sleeve is open at both ends, and a spring 6 is installed on the side of the upper pad 2 facing the pressure core. The lower mold assembly consists of a lower mold base 7, a lower pad 8, and a positioning punch 9 arranged sequentially from bottom to top. The lower pad 8 is equipped with an outer guide post 10 that is compatible with the outer guide sleeve 5. The positioning punch 9 is disposed on the lower pad 8. The outer side of the positioning punch 9 is provided with a lower mold cutter 11 that is compatible with the upper mold cutter 4. The pressure core 3 and the positioning punch 9 are shaped to fit together, and the product is constrained between the pressure core 3 and the positioning punch 9.

[0018] The working process of this mold is as follows: First, the lower shell product to be trimmed is placed on the positioning punch 9, and the inner wall of the product is in contact with the outer surface of the positioning punch 9 to achieve initial positioning of the product. Then, the upper mold assembly is driven to move downward. During the movement, the outer guide post 10 is gradually inserted into the outer guide sleeve 5. Through the cooperation between the outer guide post 10 and the outer guide sleeve 5, the upper mold assembly is ensured to move downward in the correct direction. As the upper mold assembly continues to move downward, the pressure core 3 first contacts the upper end face of the product. At this time, the upper mold assembly continues to move downward, and the spring 6 is compressed and generates elastic pressure. This elastic pressure presses the product tightly onto the positioning punch 9 to achieve reliable positioning of the product. The upper mold assembly continues to move downward. When the upper mold cutter 4 contacts the part of the product to be trimmed, the upper mold cutter 4 cooperates with the lower mold cutter 11 to cut off the excess edge material of the product, completing the trimming action.

[0019] In actual operation, after the product is trimmed, it will get stuck on the upper die cutter 4 and will not be easy to get off. This application overcomes this problem. After the trimming is completed, the upper die assembly is driven to move upward. The spring that was compressed in the early stage gradually stretches and rebounds, pushing the pressure core downward. The product will also move downward, and the product can be removed from the upper die cutter 4. Finally, the operator takes the trimmed product out of the mold, completing a complete trimming operation.

[0020] In another technical solution, the lower mold assembly further includes an inner guide post 12, one end of which is fixed to the lower mold base 7, and the other end is positioned toward the upper mold cutter 4.

[0021] In the above technical solution, the inner guide post 12 and the corresponding guide hole of the upper mold assembly further restrict the lateral displacement of the upper mold assembly during the movement. Combined with the guiding effect of the outer guide post 10 and the outer guide sleeve 5, a double guiding structure is formed, which can more effectively ensure the accuracy of the movement of the upper mold assembly and ensure that the upper mold cutter 4 and the lower mold cutter 11 can always maintain an accurate matching position during the cutting process.

[0022] In another technical solution, the number of the outer guide post 10 and the outer guide sleeve 5 are both 2-4, and they are symmetrically distributed along the central axis of the mold.

[0023] In the above technical solution, selecting 2-4 outer guide pillars 10 and outer guide sleeves 5 according to the actual situation of the mold and adopting a symmetrical distribution can make the guiding force evenly distributed on the upper mold assembly, effectively ensuring the stability of the upper mold assembly movement, avoiding tilting or offset of the upper mold assembly during movement, thereby improving the accuracy of the cooperation between the upper mold cutter 4 and the lower mold cutter 11, and ensuring the precision of the product cutting edge.

[0024] In another technical solution, the lower end face of the pressure core 3 is provided with an arc-shaped positioning groove that matches the outer surface of the product, and the outer surface of the positioning punch 9 is an arc-shaped structure that matches the inner surface of the product, so that the product is completely fitted and restricted, and displacement is avoided during edge cutting.

[0025] The above technical solution designs the lower end face of the pressure core 3 into an arc-shaped positioning groove that matches the outer surface of the product, and designs the outer surface of the positioning punch 9 into an arc-shaped structure that matches the inner surface of the product. This enables the product to achieve dual fitting positioning of the inner and outer surfaces during positioning, increases the contact area between the product and the mold positioning components, and improves the stability of positioning.

[0026] In another technical solution, both the upper die cutter 4 and the lower die cutter 11 have annular cutting edges, and the contact surface of the cutting edges is an inclined shearing surface of 30°-60°. The annular cutting edge can adapt to the circular or annular edge to be cut on the lower shell product, ensuring precise coverage of the cutting range; while the 30°-60° inclined shearing surface can transform traditional vertical shearing into inclined shearing, reducing the contact area during the shearing process, reducing shearing resistance, and at the same time, allowing the shearing force to be applied to the product gradually along the inclined direction, avoiding damage to the product due to excessive force concentration, and ensuring a smooth cutting process.

[0027] In another technical solution, the number of springs 6 is 2-4, and they are evenly distributed along the circumference of the pressing core 3.

[0028] In the above technical solution, 2-4 evenly distributed springs 6 ensure the synchronous reset of the pressure core 3, avoid uneven force on the product caused by the tilting of the pressure core 3, and further ensure the appearance integrity of the product after trimming.

[0029] In another technical solution, the lower die cutter 11 and the lower pad 8 are detachably connected, so that the lower die cutter 11 can be replaced separately when the cutting edge is worn, thereby reducing the mold maintenance cost.

[0030] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A lower shell trimming mold, characterized in that, Includes upper mold assembly and lower mold assembly; The upper mold assembly includes an upper mold base, an upper pad, a pressure core, and an upper mold cutter arranged sequentially from top to bottom. An outer guide sleeve is mounted on the upper mold base. The upper pad is connected to the upper mold base, and an equal-height sleeve is connected to the upper pad. The pressure core is slidably disposed in the equal-height sleeve. A spring is installed on the side of the upper pad facing the pressure core. The lower mold assembly consists of a lower mold base, a lower pad, and a positioning punch arranged sequentially from bottom to top. The lower pad is equipped with an outer guide post adapted to the outer guide sleeve. The positioning punch is disposed on the lower pad, and a lower mold cutter adapted to the upper mold cutter is provided on the outside of the positioning punch. The shape of the pressure core and the positioning punch are adapted to each other, and the product is constrained between the pressure core and the positioning punch.

2. The lower shell trimming mold according to claim 1, characterized in that, The lower mold assembly also includes an inner guide post, one end of which is fixed to the lower mold base, and the other end is positioned toward the upper mold cutter.

3. The lower shell trimming mold according to claim 1, characterized in that, The number of the outer guide pillars and the outer guide sleeves are both 2-4, and they are symmetrically distributed along the central axis of the mold.

4. The lower shell trimming mold according to claim 1, characterized in that, The lower end face of the pressure core is provided with an arc-shaped positioning groove that matches the outer surface of the product. The outer surface of the positioning punch is an arc-shaped structure that matches the inner surface of the product, so that the product is completely fitted and restricted, avoiding displacement during edge cutting.

5. The lower shell trimming mold according to claim 1, characterized in that, Both the upper die cutter and the lower die cutter have annular cutting edges, and the contact surfaces of the cutting edges are inclined shearing surfaces of 30°-60°.

6. The lower shell trimming mold according to claim 1, characterized in that, The number of springs is 2-4, and they are evenly distributed along the circumference of the pressure core.

7. The lower shell trimming mold according to claim 1, characterized in that, The lower die cutter and the lower pad are detachably connected.

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