Machining assembly for injection molding product

Abstract

The utility model discloses an injection molding product processing assembly, which comprises an injection mold and an ultrasonic vibration device, the injection mold comprises an upper mold base and a lower mold base, the bottom of the upper mold base is provided with an upper mold core, the top of the lower mold base is provided with a lower mold core, a sub-runner is arranged between the upper mold core and the lower mold core, and the upper mold base is provided with a sprue gate communicated with the sub-runner. Two mold cavities communicated with the sub-runner are further formed between the upper mold core and the lower mold core, the mold cavities and the sub-runner are used for forming a connecting piece for connecting a product with waste, the two mold cavities are located on the two sides of the sub-runner and staggered with the sub-runner up and down, and rubber reducing bosses are arranged at the positions, communicated with the sub-runner, of the two mold cavities; according to the utility model, the sub-runner and the die cavities are staggered up and down, so that the local thickness of the connecting part of waste and a product can be reduced to the greatest extent, and the two die cavities are provided with the glue reducing bosses at the communicating parts of the sub-runner and the two die cavities, so that the wall thickness of the product is thinner, subsequent ultrasonic cutting is facilitated, the flatness of the surface of the product is ensured, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding processing technology, specifically a processing component for injection molding. Background Technology

[0002] Injection molds are tools used for the mass production of plastic products. They involve injecting molten plastic into a mold cavity, which then cools and solidifies to form a finished product with a specific shape and size. They mainly consist of a moving mold (movable) and a fixed mold (fixed), including molding parts (which determine the product shape), a gating system (which guides the flow of plastic), and a demolding mechanism (which ejects the product). A cooling system controls the molding speed and quality. Widely used in electronics, automobiles, and daily necessities, injection molds are core equipment for the efficient and precise manufacturing of plastic products.

[0003] In injection molding, some products require specific flat surfaces for use, demanding high flatness and smoothness to facilitate sliding contact or functional requirements with other components. However, in traditional injection mold designs, the mold cavity and runner are typically directly connected. Molten plastic is transported to the mold cavity via the runner for product molding, and the waste material formed after the runner cools solidifies with the product. This results in a significant local thickness of material at the junction of the product and the waste material, necessitating cutting with a cutting tool. However, precise cutting with a cutting tool is difficult, easily creating burrs and scratches on the product surface, damaging the surface finish and reducing the yield rate. Utility Model Content

[0004] The purpose of this invention is to provide a processing component for injection molded products to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A processing component for injection molded products includes an injection mold and an ultrasonic vibration device. The injection mold includes an upper mold base and a lower mold base. The upper mold base has an upper mold core at its bottom and a lower mold core at its top. A runner is provided between the upper and lower mold cores. The upper mold base has a sprue communicating with the runner. Two mold cavities communicating with the runner are also provided between the upper and lower mold cores. The mold cavities and the runner are used to form a connecting part that connects the product and the waste material. The mold cavities are located on both sides of the runner and are vertically offset from the runner. Both mold cavities have a reducing boss at the point where they communicate with the runner. An ejection mechanism is provided in the lower mold base. A robot arm is provided between the ultrasonic vibration device and the injection mold. The robot arm is used to clamp the injection molded product onto the ultrasonic vibration device for cutting.

[0007] Furthermore, the center of the flow channel is provided with an ejector groove, and the ejector mechanism includes a top plate, on which are provided a plurality of ejector pins and main push rods, one of the ejector pins extending into the ejector groove, and the plurality of main push rods passing through the lower mold base and abutting against the lower end face of the upper mold base, and the main push rods are fitted with a return spring.

[0008] Furthermore, the ultrasonic vibration device includes a base, a fixed platform on the base, a contour groove on the fixed platform for placing injection molded products, a bracket on one side of the fixed platform, a lifting cylinder on the bracket, an ultrasonic vibration head installed at the bottom of the lifting cylinder, and material discharge holes on both sides of the fixed platform, with a collection box placed below each of the two material discharge holes.

[0009] Furthermore, the lower mold base includes a lower template, on which support blocks are symmetrically arranged, and a lower module is installed on the support blocks. The lower mold core is located on the top of the lower module, and the top plate is located between the two support blocks. A plurality of guide pillars and support pillars are provided on the top plate. One end of the plurality of guide pillars is fixedly connected to the lower template, and the other end is inserted into the lower module. One end of the plurality of support pillars is fixedly connected to the lower template, and the other end abuts against the lower end face of the lower module.

[0010] Furthermore, the lower mold base has positioning holes at the four corners of its top, and the upper mold base has several positioning pins at its bottom for inserting into the positioning holes.

[0011] The beneficial effects of this utility model are:

[0012] This invention minimizes the local thickness at the junction of the waste material and the product by staggering the flow channel and the mold cavity vertically. By providing a material-reducing boss at the connection between the two mold cavities and the flow channel, the wall thickness of the product is ensured to be thinner, further weakening the connection force between the waste material and the product. This facilitates subsequent ultrasonic cutting, ensures the flatness of the product surface, and improves product quality.

[0013] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0014] Figure 1 : Overall structural diagram of this utility model.

[0015] Figure 2 : Structural diagram of the injection mold of this utility model.

[0016] Figure 3 : Figure 2 Enlarged view of the structure of part A.

[0017] Figure 4 : A cross-sectional view of the injection mold of this utility model.

[0018] Figure 5 : Figure 4 Enlarged view of the structure of part B.

[0019] Figure 6 Diagram showing the mold opening state of the upper and lower mold bases of this utility model.

[0020] Figure 7 : Structural diagram of the ultrasonic vibration device of this utility model.

[0021] Figure 8 : Structural diagram of the connector of this utility model.

[0022] Reference numerals: 1. Injection mold; 2. Ultrasonic vibration device; 3. Robot arm; 4. Ejection mechanism; 5. Connecting part; 11. Upper mold base; 12. Lower mold base; 13. Upper mold core; 14. Lower mold core; 15. Runner; 16. Sprue; 17. Mold cavity; 18. Reducing boss; 19. Ejector groove; 21. Base; 22. Fixing platform; 23. Contouring groove; 24. Bracket; 25. Lifting cylinder; 26. Ultrasonic vibrator head; 27. Drop hole; 28. Collection box; 41. Top plate; 42. Ejector pin; 43. Main push rod; 44. Return spring; 51. Product; 52. Scrap; 111. Positioning pin; 121. Lower mold plate; 122. Support block; 123. Lower module; 124. Guide pin; 125. Support pin; 126. Positioning hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please refer to Figure 1-8 ;

[0025] A processing component for injection molded products includes an injection mold 1 and an ultrasonic vibration device 2. The injection mold 1 is mounted on a horizontal injection molding machine. The injection mold 1 includes an upper mold base 11 and a lower mold base 12. An upper mold core 13 is provided at the bottom of the upper mold base 11, and a lower mold core 14 is provided at the top of the lower mold base 12. A runner 15 is provided between the upper mold core 13 and the lower mold core 14. The upper mold base 11 is provided with a sprue 16 communicating with the runner 15 for injecting molten material. Two additional runners communicating with the runner 15 are also provided between the upper mold core 13 and the lower mold core 14. The mold cavity 17 is connected to the runner 15. The mold cavity 17 and the runner 15 are used to connect the product 51 and the waste material 52 after the molten material is cooled. The two mold cavities 17 are located on both sides of the runner 15 and are vertically offset from the runner 15. When molten material is injected into the mold through the sprue 16, the material will first fill the entire runner 15 before entering the mold cavity 17 to complete the molding. This results in waste material 52 remaining in the runner 15, forming the connector 5 connected to the product 51. By connecting the runner 15 with the product 51, the product 51 can be formed. The vertically staggered mold cavities 17 minimize the local thickness at the connection between the waste material 52 and the product 51. To further reduce the wall thickness at the connection between the waste material 52 and the product 51, both mold cavities 17 are equipped with a reducing boss 18 at the connection point with the runner 15 to ensure that the wall thickness of the product 51 is thinner, further weakening the connection force between the waste material 52 and the product 51, facilitating subsequent cutting by the ultrasonic vibration device 2. The lower mold base 12 is equipped with an ejection mechanism 4 to push the upper mold base 11, separating the upper mold base 11 and the lower mold base 12, and ejecting the connecting piece 5 from the mold together. A robotic arm 3 is provided between the ultrasonic vibration device 2 and the injection mold 1. The robotic arm 3 is a commonly used robotic arm on the market, which will not be described in detail here. The robotic arm 3 clamps the ejected connecting piece 5 onto the ultrasonic vibration device 2. The heat energy generated by the high-frequency vibration of the ultrasonic vibration device 2 cuts the weak area at the connection, realizing the separation of the waste material 52 and the product 51, ensuring the flatness of the surface of the product 51, and improving the quality of the product 51.

[0026] In this embodiment, the center of the flow channel 15 is provided with an ejector groove 19. The ejector mechanism 4 includes a top plate 41, on which a plurality of ejector pins 42 and a main push rod 43 are provided. By pushing the top plate 41, the top plate 41 drives the ejector pins 42 and the main push rod 43 to move, which is used for the separation of the upper mold base 11 and the lower mold base 12 and the ejection of the product 51. One of the ejector pins 42 extends into the ejector groove 19. The injected molten material will form in the ejector groove 19 and wrap around the ejector pin 42 extending into the ejector groove 19, ensuring that... The connector 5 is stable and does not fall off when it is pushed out, which facilitates the gripping operation of the robot arm 3. Several main push rods 43 pass through the lower mold base 12 and abut against the lower end face of the upper mold base 11. When the top plate 41 is pushed, the main push rods 43 will also move accordingly, thereby generating enough force to push the upper mold base 11 open and realize the separation of the upper mold base 11 and the lower mold base 12. The main push rods 43 are covered with return springs 44. The return effect of the return springs 44 allows the top plate 41 to automatically return to the initial position after the ejection action is completed.

[0027] In this embodiment, the ultrasonic vibration device 2 includes a base 21, a fixed platform 22 on the base 21, and a contour groove 23 on the fixed platform 22 for placing and stabilizing the connector 5 to prevent it from shifting during vibration. A bracket 24 is provided on one side of the fixed platform 22, and a lifting cylinder 25 is provided on the bracket 24. An ultrasonic vibration head 26 is installed at the bottom of the lifting cylinder 25. When separating waste material 52, the lifting cylinder 25 is controlled to move downward to press down on the waste material 52 on the connector 5. Then, the high-frequency vibration generated by the ultrasonic vibration head 26 is used to cut the weak area of ​​the connector 5, thereby realizing the separation of waste material 52 from product 51. The fixed platform 22 has dropping holes 27 on both sides, and a collection box 28 is placed below each of the two dropping holes 27. The separated product 51 will pass through the corresponding dropping hole 27 and fall directly into the corresponding collection box 28, eliminating the manual sorting process and improving production efficiency.

[0028] In this embodiment, the lower mold base 12 includes a lower template 121, with symmetrical support blocks 122 on the lower template 121. A lower module 123 is mounted on the support blocks 122, and a lower mold core 14 is disposed on the top of the lower module 123. A top plate 41 is disposed between the two support blocks 122. A plurality of guide pillars 124 and support pillars 125 are provided on the top plate 41. One end of the plurality of guide pillars 124 is fixedly connected to the lower template 121, and the other end is inserted into the lower module 123 to guide the up and down movement of the top plate 41 and ensure its smooth movement. One end of the plurality of support pillars 125 is fixedly connected to the lower template 121, and the other end abuts against the lower end face of the lower module 123 to support the lower module 123.

[0029] In this embodiment, positioning holes 126 are provided at the four corners of the top of the lower mold base 12, and a number of positioning pins 111 for inserting into the positioning holes 126 are provided at the bottom of the upper mold base 11. When the upper mold base 11 and the lower mold base 12 are closed, the positioning pins 111 of the upper mold base 11 will be aligned and inserted into the positioning holes 126 on the lower mold base 12 to ensure the accuracy of the position during mold closing.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A processing component for injection molded products, comprising an injection mold (1) and an ultrasonic vibration device (2), wherein the injection mold (1) comprises an upper mold base (11) and a lower mold base (12), the upper mold base (11) having an upper mold core (13) at its bottom, the lower mold base (12) having a lower mold core (14) at its top, a runner (15) being provided between the upper mold core (13) and the lower mold core (14), and the upper mold base (11) having a sprue (16) communicating with the runner (15), characterized in that, Two mold cavities (17) are arranged between the upper die core (13) and the lower die core (14) and communicate with the distribution channel (15), the mold cavities (17) and the distribution channel (15) are used for forming the connecting piece (5) connected with the product (51) and the waste (52), the two mold cavities (17) are located on both sides of the distribution channel (15) and are vertically staggered with the distribution channel (15), the two mold cavities (17) are each provided with a glue reduction boss (18) at the communication position with the distribution channel (15), the lower die holder (12) is provided with an ejection mechanism (4), a mechanical hand (3) is arranged between the ultrasonic vibration device (2) and the injection mold (1), and the mechanical hand (3) is used for clamping the injection product (51) to the ultrasonic vibration device (2) for cutting.

2. A processing assembly for injection molded articles according to claim 1, characterized in that, The distribution channel (15) is provided with an ejection groove (19) in the center, the ejection mechanism (4) comprises a top plate (41), a plurality of ejector pins (42) and main push rods (43) are arranged on the top plate (41), one of the ejector pins (42) extends into the ejection groove (19), and a plurality of main push rods (43) penetrate through the lower die holder (12) and abut against the lower end surface of the upper die holder (11), and the main push rod (43) is provided with a return spring (44).

3. A processing assembly for injection molded articles as defined in claim 1, wherein The ultrasonic vibration device (2) comprises a base (21), the base (21) is provided with a fixing table (22), the fixing table (22) is provided with a profiling groove (23) for placing the injection product (51), one side of the fixing table (22) is provided with a support (24), the support (24) is provided with a lifting cylinder (25), the bottom of the lifting cylinder (25) is provided with an ultrasonic vibration head (26), and both sides of the fixing table (22) are provided with blanking holes (27), and a collecting box (28) is arranged below each blanking hole (27).

4. A molded article processing assembly according to claim 2, wherein The lower die holder (12) comprises a lower die plate (121), the lower die plate (121) is symmetrically provided with a support block (122), the support block (122) is provided with a lower die block (123), the lower die core (14) is arranged on the top of the lower die block (123), the top plate (41) is arranged between the two support blocks (122), a plurality of guide columns (124) and support columns (125) are arranged on the top plate (41), one end of each guide column (124) is fixedly connected with the lower die plate (121), the other end penetrates into the lower die block (123), one end of each support column (125) is fixedly connected with the lower die plate (121), and the other end abuts against the lower end surface of the lower die block (123).

5. A processing assembly for injection molded articles as defined in claim 4, wherein The lower die holder (12) is provided with a positioning hole (126) at each of the four corners of the top, and the upper die holder (11) is provided with a plurality of positioning columns (111) for inserting into the positioning hole (126).

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