Mold device based on movable interchangeable inserts
By using an interchangeable insert mold device, the problems of high mold cost and difficult mold disassembly for products with low production volume are solved, thus achieving mold versatility and efficient production.
Patent Information
- Application Number
- CN202423119442.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In existing technologies, products with low production volumes require specially designed molds, which increases costs, and the demolding of small and complex products is difficult, affecting production efficiency.
The mold device uses interchangeable inserts to achieve injection molding production of products with different shapes by changing the inserts, and simplifies the demolding process through core pulling and moving mechanisms.
It achieves versatility and high-efficiency production of mold devices, reduces mold costs, and improves production efficiency and injection precision.
Smart Images
Figure CN223618147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molds, and in particular to a mold device based on movable interchangeable inserts. Background Technology
[0002] During the injection molding process, molds of corresponding shapes are required for products of different shapes. However, since some products have low production volumes, setting up new molds specifically for these low-volume products can significantly increase injection molding costs. Moreover, for some small, complex products, the molded product will be tightly bonded to the mold, making demolding difficult and time-consuming, which will affect the next injection molding process and lead to a decrease in production efficiency.
[0003] In view of this, the present invention proposes a mold device based on movable interchangeable inserts to solve the above problems. Utility Model Content
[0004] This invention overcomes the shortcomings of the above-mentioned technologies and provides a mold device based on movable interchangeable inserts. By changing the inserts, the mold device can be used to injection mold products of different shapes. Moreover, the operation of changing the inserts is simple and helps to improve the production efficiency of injection molding.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A mold device based on movable interchangeable inserts includes an upper mold and a lower mold. The top of the lower mold has a first receiving cavity, in which a first insert and a guide bar are placed. The outer side of the first insert has a first guide groove for cooperating with the guide bar. The top of the first insert has a first injection groove. The upper mold has an injection channel communicating with the first injection groove. The bottom of the lower mold has a core pull extending in a vertical direction. The top of the core pull penetrates into the first receiving cavity from the bottom of the lower mold. The core pull is used to lift the first insert after injection molding is completed.
[0007] Preferably, the mold device further includes a second insert, which includes a textured portion, a connecting portion, and a transmission portion in a transverse direction. The first insert has an opening on its side that communicates with the first injection groove, and the textured portion is smaller than the opening. During the injection molding process, the connecting portion is embedded in the opening, and the textured portion is placed in the first injection groove. The transmission portion is connected to a moving mechanism for moving the second insert laterally away from the first insert after the injection molding is completed.
[0008] Preferably, the lower mold is provided with a second receiving cavity for placing the second insert, the bottom of the second receiving cavity is provided with a second guide groove extending laterally, and the bottom of the second insert is provided with a guide bar that can slide within the second guide groove.
[0009] Preferably, the first insert is formed by connecting a first half-shell and a second half-shell, and both the first half-shell and the second half-shell have a first guide groove on their outer sides.
[0010] Preferably, the outer side of the first insert is provided with a fixing groove located between the first half-shell and the second half-shell, and the fixing groove is provided with a fixing member.
[0011] Preferably, the injection channel extends vertically and penetrates the upper mold.
[0012] Preferably, a third insert is installed in the injection channel, the bottom of the third insert is provided with a second injection groove, and the top edge of the third insert is provided with an injection hole communicating with the injection channel.
[0013] Preferably, the third insert has a connecting protrusion at its top, and the injection channel has a step inside, with the connecting protrusion resting on the step, and the step being located near the upper end of the injection channel.
[0014] Preferably, the mold device further includes a positioning rod, the top of which is provided with a snap-fit connector, the diameter of which is greater than the diameter of the positioning rod, the top of the upper mold is provided with a positioning groove for accommodating the snap-fit connector, the upper mold is provided with a first positioning channel communicating with the positioning groove, the second insert is provided with a second positioning channel, and the positioning rod passes through the first positioning channel and the second positioning channel in sequence.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model allows the mold device to be used for injection molding production of products of different shapes by replacing the first insert with different shapes. The upper mold, lower mold, and core pulling can be reused, reducing the injection mold cost required for producing different models of products.
[0017] 2. There is no connecting structure between the core puller and the first insert. When the first insert needs to be replaced, simply pull the core puller to lift the first insert, so that the guide bar is disengaged from the first injection groove of the first insert. Then, remove the original first insert, and then pull the core puller down to put the new first insert into the first receiving cavity. The operation is simple and can avoid damage to the first insert.
[0018] 3. After injection molding is completed, the mold device of this utility model lifts the first insert by moving the upper mold upward and pulling the core. Then, the first insert and the product injection molded on the first insert are removed from the mold device together. Then, the product is removed from the first insert, and a new first insert is placed into the first receiving cavity. The mold device continues to injection mold the product. Demolding and injection are carried out simultaneously, avoiding demolding on the mold device, thereby improving production efficiency. Attached Figure Description
[0019] Figure 1 This is an exploded view of the movable interchangeable insert mold device of this utility model;
[0020] Figure 2 This is a top view of the movable interchangeable insert mold device of this utility model;
[0021] Figure 3 yes Figure 2 A sectional view at point AA;
[0022] Figure 4 This is a schematic diagram of the lower mold of this utility model;
[0023] The implementation, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:
[0025] Reference Figures 1-4 An embodiment of the mold device based on movable interchangeable inserts according to this utility model is proposed:
[0026] A mold device based on interchangeable inserts includes an upper mold 1 and a lower mold 2. The lower mold 2 has a first receiving cavity 21 at its top, within which a first insert 3 and a guide bar 22 are placed. The outer side of the first insert 3 has a first guide groove 31 for engaging with the guide bar 22, and the top of the first insert 3 has a first injection groove 32. The upper mold 1 has an injection channel 11 communicating with the first injection groove 32, and the bottom of the lower mold 2 has a core puller 4 extending vertically, the top of which penetrates from the bottom of the lower mold 2 into the first receiving cavity 21.
[0027] In the production of some small, complex products 5, the product 5 is tightly bonded to the mold after injection molding, making demolding difficult and time-consuming. Demolding on the mold device itself can affect subsequent injection molding, leading to decreased production efficiency. However, the mold device of this invention, after injection molding, lifts the first insert 3 by moving the upper mold 1 upwards and pulling the core 4. Then, the first insert 3 and the product 5 injection-molded on the first insert 3 are removed from the mold device together. The product 5 is then removed from the first insert 3, and a new first insert 3 is placed into the first receiving cavity 21. The mold device continues injection molding of the product 5. Demolding and injection are performed simultaneously, avoiding demolding on the mold device itself, thereby improving production efficiency.
[0028] like Figure 4As shown, the mold assembly also includes a second insert 6, which, in a transverse direction, includes a raised portion 61, a connecting portion 62, and a transmission portion 63. The first insert 6 has an opening 33 on its side that communicates with the first injection groove 32, and the raised portion 61 is smaller than the opening 33. During injection molding, the connecting portion 62 is embedded in the opening 33, and the raised portion 61 is placed in the first injection groove 32, so that the side of the injection-molded product 5 forms a concave pattern corresponding to the raised portion 61. The transmission portion 63 is connected to a moving mechanism for laterally moving the second insert 6 away from the first insert 3 after injection molding is completed. Figure 1 As shown, the second insert 6 is connected to the moving mechanism via a transmission connector 64.
[0029] The lower mold 2 is provided with a second receiving cavity for placing the second insert 6. The bottom of the second receiving cavity is provided with a second guide groove 24 extending laterally, and the bottom of the second insert 6 is provided with a guide bar 65. The guide bar 65 is placed in the second guide groove 24, so that when the moving mechanism drives the second insert 6, the second insert 6 can move laterally stably.
[0030] like Figure 1 As shown, the first insert 3 is formed by the relative connection of a first half-shell 34 and a second half-shell 35. Both the first half-shell 34 and the second half-shell 35 have a first guide groove 31 on their outer sides. Both the first half-shell 34 and the second half-shell 35 are connected to the guide bar 22 through the first guide groove 31, ensuring that the first half-shell 34 and the second half-shell 35 are accurately installed within the first receiving cavity 21. Furthermore, during the process of the core pull 4 lifting the first insert 3, the first guide groove 31 cooperates with the guide bar 22 to ensure that the first insert 3 moves stably in the vertical direction.
[0031] The outer side of the first insert 3 is provided with a fixing groove 36 located between the first half-shell 34 and the second half-shell 35, and the fixing groove 36 is provided with a fixing member. The fixing member is detachably connected to the fixing groove 36. After injection molding is completed and the first insert 3 is removed, the first half-shell 34 and the second half-shell 35 can be disconnected by removing the fixing member in the fixing groove 36, which facilitates the demolding of the product 5.
[0032] like Figure 3 As shown, the injection channel 11 extends vertically and penetrates the upper mold 1. A third insert 7 is installed inside the injection channel 11. The bottom of the third insert 7 is provided with a second injection groove 71, and the top of the third insert 7 is provided with an injection hole 72 communicating with the injection channel 11. The second injection groove 71 has raised textures for injection molding to form the concave texture on the top of the product 5.
[0033] The third insert 7 has a connecting protrusion 73 on its top edge, and a step 12 is provided in the injection channel 11. The step 12 is located near the upper end of the injection channel 11. The third insert 7 rests on the step 12 through the connecting protrusion, so that the third insert 7 is installed in the injection channel 11. The installation and removal of the third insert 7 is simple.
[0034] This invention allows the mold device to be used for injection molding production of products 5 of different shapes by replacing the first insert 3, the second insert 6, and the third insert 7 with different shapes. Moreover, the upper mold 1, the lower mold 2, and the core puller 4 can be reused, reducing the injection mold cost required to produce different models of products 5.
[0035] The mold assembly also includes a positioning rod 8, with a retaining connector 81 at its top. The diameter of the retaining connector 81 is larger than that of the positioning rod 8, and the top of the upper mold 1 has a positioning groove 13 for accommodating the retaining connector 81. The upper mold 1 has a first positioning channel 14 communicating with the positioning groove 13. The second insert 6 has a second positioning channel 66. The mold assembly is placed in the positioning groove 13 via the retaining connector 81, and the positioning rod 8 passes through the first positioning channel 14 and the second positioning channel 66 in sequence, so that the upper mold 1 and the second insert 6 are accurately positioned, thereby improving the precision of the injection molded product 5.
[0036] like Figure 1 As shown, the top of the lower mold 2 is provided with a positioning protrusion 25, and the bottom of the upper mold 1 is provided with a recess 15 opposite to the positioning protrusion 25. The mold device uses the positioning protrusion 25 and the recess 15 to cooperate, so that the upper mold 1 and the lower mold 2 are accurately positioned and connected.
[0037] The injection molding process of the product 5 of this utility model is as follows: First, the guide bar 22 is inserted into the first guide groove 31 of the first insert 3, so that the first insert 3 is installed in the first receiving cavity 21. Then, the connecting part 62 is embedded in the opening 33. Then, the upper mold 1 is moved down to close with the lower mold 2. After the mold is closed, injection is performed into the injection hole 72, and the molten plastic fills the injection channel 11, the first injection groove 32, and the second injection groove 71 to form the product 5. After injection molding is completed, the upper mold 1 moves up to open the mold, the third insert 7 is removed from the injection molded product 5, and at the same time, the positioning rod 8 leaves the second positioning channel 66. Then, the moving mechanism drives the second insert 6 to move laterally to detach from the first insert 3 and the injection molded product 5. Then, the pull rod lifts the first insert 3, so that the first insert 3 is removed from the lower mold 2. Then, the first insert 3 and the product 5 injection molded on the first insert 3 are removed, and another first insert 3 is installed into the first receiving cavity 21. The above injection molding operation is repeated. Demolding is required to remove the first insert 3 and the product 5. The demolding process is as follows: disassemble the fixing parts in the fixing groove 36 so that the first half shell 34 and the second half shell 35 are disconnected and the product 5 is taken out. Moreover, the first insert 3 has an opening 33 to facilitate the removal of the product 5.
[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A mold device based on movable interchangeable inserts, characterized in that, The mold includes an upper mold (1) and a lower mold (2). The lower mold (2) has a first receiving cavity (21) at its top. A first insert (3) and a guide bar (22) are placed in the first receiving cavity (21). The outer side of the first insert (3) has a first guide groove (31) for cooperating with the guide bar (22). The top of the first insert (3) has a first injection groove (32). The upper mold (1) has an injection channel (11) communicating with the first injection groove (32). The bottom of the lower mold (2) has a core puller (4) extending in the vertical direction. The top of the core puller (4) penetrates into the first receiving cavity (21) from the bottom of the lower mold (2). The core puller (4) is used to lift the first insert (3) after injection molding is completed.
2. The mold device based on interchangeable inserts according to claim 1, characterized in that, It also includes a second insert (6), which includes a textured part (61), a connecting part (62), and a transmission part (63) in a transverse direction. The first insert (3) has an opening (33) on its side that communicates with the first injection groove (32). The textured part (61) is smaller than the opening (33). During the injection molding process, the connecting part (62) is embedded in the opening (33), and the textured part (61) is placed in the first injection groove (32). The transmission part (63) is connected to a moving mechanism for moving the second insert (6) laterally away from the first insert (3) after the injection molding is completed.
3. A mold device based on interchangeable inserts according to claim 2, characterized in that, The lower mold (2) is provided with a second receiving cavity for placing the second insert (6), the bottom of the second receiving cavity is provided with a second guide groove (24) extending laterally, and the bottom of the second insert (6) is provided with a guide bar (65) that can slide in the second guide groove (24).
4. The mold device based on movable interchangeable inserts according to claim 1, characterized in that, The first insert (3) is formed by connecting the first half shell (34) and the second half shell (35) respectively. The first half shell (34) and the second half shell (35) are provided with a first guide groove (31) on their outer sides.
5. A mold device based on interchangeable inserts according to claim 4, characterized in that, The first insert (3) has a fixing groove (36) located between the first half shell (34) and the second half shell (35) on its outer side, and the fixing groove (36) is provided with a fixing member.
6. A mold device based on interchangeable inserts according to claim 1, characterized in that, The injection channel (11) extends vertically and passes through the upper mold (1).
7. A mold device based on interchangeable inserts according to claim 6, characterized in that, A third insert (7) is installed in the injection channel (11). The bottom of the third insert (7) is provided with a second injection groove (71), and the top of the third insert (7) is provided with an injection hole (72) communicating with the injection channel (11).
8. A mold device based on interchangeable inserts according to claim 7, characterized in that, The third insert (7) has a connecting protrusion (73) at its top edge, and a step (12) is provided in the injection channel (11). The connecting protrusion (73) rests on the step (12), and the step (12) is located at the upper end near the injection channel (11).
9. A mold device based on interchangeable inserts according to claim 2, characterized in that, The device includes a positioning rod (8), the top of which is provided with a snap-fit connector (81), the diameter of which is greater than that of the positioning rod (8), the top of the upper mold (1) is provided with a positioning groove (13) for accommodating the snap-fit connector (81), the upper mold (1) is provided with a first positioning channel (14) communicating with the positioning groove (13), the second insert (6) is provided with a second positioning channel (66), and the positioning rod (8) passes through the first positioning channel (14) and the second positioning channel (66) in sequence.