Crystal key injection mold
By designing crystal button injection molds with multiple outer exhaust tanks and inner exhaust tanks, the problem of exhaust difficulties during the injection molding process is solved, the smoothness and efficiency of production is improved, the cost and residual rate are reduced, and the product quality is improved.
Patent Information
- Application Number
- CN202421512988.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During the injection molding process, existing crystal button products have difficulty in exhausting due to product thickness, resulting in gas patterns on the product, poor production, reduced yield and increased costs.
A crystal key injection mold is designed, including an upper mold and a lower mold. The lower mold is equipped with a frame groove, a rubber inlet groove, an outer exhaust groove, an inner exhaust groove and a key groove. The timely discharge of gas is achieved through multiple outer exhaust grooves and an inner exhaust groove, which increases the glue injection speed and prevents the appearance of air marks.
Through improved exhaust design, production is smoother and more efficient, reducing production costs and product residual rate, and improving product quality.
Smart Images
Figure CN222858649U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of preparation of silicone rubber products, in particular to a crystal key injection mold. Background Art
[0002] Existing crystal key products are generally produced by injection molding. During injection molding, the gas in the mold needs to be discharged smoothly to prepare qualified products. In the prior art, for ultra-thick crystal key products, during injection molding, because the product is too thick, exhaust is extremely difficult, resulting in air marks on the product and slow production time, which makes production extremely unsmooth, reduces product yield, increases costs, and reduces production efficiency; in addition, due to the thickening of crystal key products, greater demolding force is required, resulting in demolding is also more difficult. Therefore, the above problems need to be improved. Utility Model Content
[0003] The technical problem to be solved by the embodiment of the utility model is to provide a crystal button injection mold to improve product yield and production efficiency.
[0004] In order to solve the above technical problems, an embodiment of the utility model proposes a crystal button injection mold, including an upper mold and a lower mold. The lower mold is provided with a frame groove, a glue feed groove, an external exhaust groove, an internal exhaust groove and a key groove. A glue feed step for communicating with the glue feed groove is provided in the middle of the front end of the key groove, and a glue outlet step for communicating with the frame groove is provided at the rear end of the key groove. A plurality of ejector holes are provided in the frame groove and the glue feed groove; one end of the external exhaust groove is connected to the frame groove, and the other end is connected to the outside; an exhaust hole is provided in the internal exhaust groove, and the left and right sides of the key groove are connected to the internal exhaust groove; a glue feed port is provided on the upper mold, and the position of the glue feed groove corresponds to the glue feed groove.
[0005] Furthermore, the frame groove includes four outer frame grooves and one or more inner frame grooves, the four outer frame grooves form a rectangle, and the left and right ends of the inner frame groove are connected to the outer frame grooves on the left and right sides.
[0006] Furthermore, there are a plurality of key slots, and two glue outlet steps symmetrically arranged along the middle are arranged at the rear end of the key slots.
[0007] Furthermore, the ejector pin hole in the frame groove is correspondingly located next to the glue outlet step, and the ejector pin hole in the glue inlet groove is correspondingly located next to the glue inlet step.
[0008] Furthermore, support grooves are provided at the four corners of the rectangle.
[0009] Furthermore, a convex column is convexly provided on the upper mold at a position corresponding to the supporting groove, and a concave hole matching the convex column is provided at the bottom of the supporting groove.
[0010] Furthermore, two ends of the glue inlet groove are connected to the outer frame grooves on the left and right sides.
[0011] Furthermore, a plurality of positioning blocks are provided on the lower die, and a plurality of positioning grooves are correspondingly provided on the upper die.
[0012] The beneficial effects of the utility model are as follows: the utility model makes production smoother and more efficient, reduces production costs, reduces waste of human resources, reduces the defective rate of products, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural diagram of the crystal key injection mold of the embodiment of the utility model.
[0014] Figure 2 It is a three-dimensional structural diagram of the lower mold of an embodiment of the utility model.
[0015] Figure 3 It is a three-dimensional structural diagram of the upper mold of an embodiment of the utility model.
[0016] Figure 4 It is a three-dimensional structural diagram of the product after injection molding according to an embodiment of the utility model.
[0017] Description of Figure Numbers
[0018] The product 10 after injection molding, the button 11, the frame 12, the support column 13, the clamping column 14, the upper mold 20, the glue inlet 21, the boss 22, the positioning groove 23, the lower mold 30, the frame groove 31, the glue inlet groove 32, the outer exhaust groove 33, the inner exhaust groove 34, the button groove 35, the glue inlet step 36, the glue outlet step 37, the ejector hole 38, the exhaust hole 39, the support groove 40, and the positioning block 41. DETAILED DESCRIPTION
[0019] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model is further described in detail below in conjunction with the drawings and specific embodiments.
[0020] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0022] Please refer to Figure 1 to Figure 4The crystal key injection mold of the embodiment of the utility model comprises an upper mold and a lower mold. The products after injection molding include keys, frames, support columns, etc.
[0023] The lower mold is provided with a frame groove, a glue inlet groove, an outer exhaust groove, an inner exhaust groove and a key groove. A glue inlet step for communicating with the glue inlet groove is provided in the middle of the front end of the key groove, and the key groove is connected to the glue inlet groove through the glue inlet step. A glue inlet port corresponding to the glue inlet groove is provided on the upper mold, and there are preferably multiple glue inlets. During injection molding, liquid glue enters the glue inlet groove from the glue inlet port, and the glue in the glue inlet groove enters the key groove through the glue inlet step. A glue outlet step for communicating with the frame groove is provided at the rear end of the key groove, and the key groove is connected to the frame groove through the glue outlet step. During injection molding, glue overflowing from the key groove enters the frame groove from the glue outlet step.
[0024] Several ejector holes are provided in the frame groove and the glue inlet groove. After the injection molding is completed, during demolding, the product can be ejected from the ejector holes through several ejector pins. One end of the outer exhaust groove is connected to the frame groove, and the other end is connected to the outside of the mold. Exhaust holes are provided in the inner exhaust groove, and the left and right sides of the key groove are connected to the inner exhaust groove. There are multiple outer exhaust grooves and multiple inner exhaust grooves. The utility model adopts multiple outer exhaust grooves and inner exhaust grooves, which can discharge the gas in the key groove and the frame groove in a timely and smooth manner, improve the injection speed, and prevent air marks on the product.
[0025] As an implementation method, the frame groove includes 4 outer frame grooves and one or more inner frame grooves, the 4 outer frame grooves form a rectangle, and the left and right ends of the inner frame grooves are connected to the outer frame grooves on the left and right sides. The rectangle is more convenient for one-time injection molding of multiple crystal buttons, and is also convenient for storage and transportation of the product.
[0026] As an implementation method, there are multiple key slots, and two symmetrical glue outlet steps are provided along the middle at the rear end of the key slot. The two symmetrical glue outlet steps enable the maximum exhaust speed to be greater than the glue feeding speed, making exhaust smoother, and effectively preventing bubbles in the key slot and air marks.
[0027] As an implementation method, the ejector pin hole in the frame groove is located next to the glue outlet step, and the ejector pin hole in the glue inlet groove is located next to the glue inlet step. After injection molding, the strength next to the glue outlet step and the glue inlet step is higher. Setting the ejector pin hole in this position can prevent the product from being damaged and increase the demoulding speed.
[0028] As an embodiment, support grooves are provided at the four corners of the rectangle. The support grooves are preferably inverted cones. After injection molding, support columns are formed at the support grooves, which facilitate stacking, storage and transportation of rectangular products, so that the keys in the middle of the rectangle are kept away from air, and the key surfaces are prevented from being scratched during transportation.
[0029] As an implementation method, a convex column is provided on the upper mold at a position corresponding to the support groove, and a concave hole matching the convex column is provided at the bottom of the support groove. After injection molding, a groove will be formed at the position corresponding to the convex column, and a clamping column will be formed at the position corresponding to the concave hole, so as to facilitate the stacking, placement and transportation of the injection molded products. When stacking, the clamping column of the upper layer of the product is embedded in the groove of the lower layer of the product.
[0030] As an implementation method, the two ends of the glue feeding groove are connected to the outer frame grooves on the left and right sides, which can increase the glue feeding speed and reduce the injection time.
[0031] As an embodiment, the lower mold is provided with a plurality of positioning blocks, and the upper mold is provided with a plurality of corresponding positioning grooves, so as to facilitate the alignment of the upper and lower molds. Preferably, there are four positioning blocks, which are provided at the four corners of the lower mold.
[0032] The utility model makes the glue move more evenly through a more suitable exhaust design, so that the production is smoother; this is more efficient, reduces production costs, reduces the waste of human resources, reduces the defective rate of products, and improves product quality.
[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A crystal key injection mold, comprising an upper mold and a lower mold, characterized in that: The lower mold is provided with a frame groove, a glue inlet groove, an outer exhaust groove, an inner exhaust groove and a key groove. A glue inlet step for communicating with the glue inlet groove is provided in the middle of the front end of the key groove, and a glue outlet step for communicating with the frame groove is provided at the rear end of the key groove. A number of ejector holes are provided in the frame groove and the glue inlet groove; one end of the outer exhaust groove is connected with the frame groove, and the other end is connected with the outside; an exhaust hole is provided in the inner exhaust groove, and the left and right sides of the key groove are connected with the inner exhaust groove; a glue inlet port corresponding to the glue inlet groove is provided on the upper mold.
2. The crystal key injection mold according to claim 1, characterized in that: The frame grooves include 4 outer frame grooves and one or more inner frame grooves. The 4 outer frame grooves form a rectangle. The left and right ends of the inner frame grooves are connected with the outer frame grooves on the left and right sides.
3. The crystal key injection mold according to claim 2, characterized in that: There are a plurality of key slots, and two glue outlet steps symmetrically arranged along the middle are arranged at the rear end of the key slots.
4. The crystal key injection mold according to claim 2, characterized in that: The ejector pin hole in the frame groove is located next to the glue outlet step, and the ejector pin hole in the glue inlet groove is located next to the glue inlet step.
5. The crystal key injection mold according to claim 2, characterized in that: Support grooves are provided at the four corners of the rectangle.
6. The crystal key injection mold according to claim 5, characterized in that: A convex column is convexly arranged on the upper die at a position corresponding to the supporting groove, and a concave hole matching with the convex column is arranged at the bottom of the supporting groove.
7. The crystal key injection mold according to claim 2, characterized in that: The two ends of the glue inlet groove are connected with the outer frame grooves on the left and right sides.
8. The crystal key injection mold according to claim 1, characterized in that: The lower die is provided with a plurality of positioning blocks, and the upper die is correspondingly provided with a plurality of positioning grooves.