Injection molding structure of plastic switch slip sheet

Abstract

The utility model relates to a plastic switch slip sheet injection molding structure which comprises a front mold, a rear mold and a core pulling mechanism, the front mold and the rear mold are each provided with a plurality of molding grooves, every two opposite molding grooves jointly form a molding cavity of a switch slip sheet, the front mold is provided with a plurality of pouring channels, and the pouring channels correspond to and communicate with the molding grooves in the front mold correspondingly. The front mold is provided with a pouring opening and a plurality of communicating channels, the pouring opening communicates with one communicating channel, and the multiple pouring channels communicate with one another through the multiple communicating channels. After glue is fed into the pouring opening, molten plastic enters the multiple pouring channels through the multiple communicating channels and finally enters the multiple forming cavities, after the mold is opened, injection molding raw materials in the pouring channels are automatically separated from the switch sliding sheets along with the front mold, meanwhile, waste does not exist between the multiple switch sliding sheets, and after the switch sliding sheets are demolded, the switch sliding sheets are directly independent switch sliding sheets. Operation steps can be saved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to an injection molding structure of a plastic switch slide. Background Art

[0002] The plastic switch slide is one of the accessories on the water cup and is made by injection molding.

[0003] Related art injection molding mold Figure 1 As shown, a plurality of molding grooves 13 and a plurality of connecting channels 113 are provided on the rear mold 12 , and the plurality of molding grooves 13 are interconnected through the plurality of connecting channels 113 .

[0004] After the mold is opened, the operator needs to manually demould and remove the switch slide. There are waste materials connecting the switch slides between the removed switch slides, and the waste materials need to be cut off manually later. The operation is troublesome and the work efficiency is low. Utility Model Content

[0005] The present application provides a plastic switch slide injection molding structure, which solves the problem in the prior art that the waste material is generally cut off manually after the waste material and the plastic part are demoulded at the same time, which is troublesome to operate and has low work efficiency.

[0006] The plastic switch slide injection molding structure provided in this application adopts the following technical solution:

[0007] A plastic switch slide injection molding structure includes a front mold, a rear mold and a core pulling mechanism. The front mold and the rear mold are both provided with a plurality of molding grooves, and the two molding grooves together form a molding cavity of the switch slide. The front mold is provided with a plurality of pouring paths, and the plurality of pouring paths respectively correspond to and connect the plurality of molding grooves on the front mold. The front mold is provided with a pouring port and a plurality of connecting channels, and the pouring port is connected to one of the connecting channels, and the plurality of pouring paths are connected to each other through the plurality of connecting channels.

[0008] By adopting the above technical scheme, after the glue is injected into the pouring port, the molten plastic enters multiple pouring channels through multiple connecting channels and finally enters multiple molding cavities. After the mold is opened, the injection molding material in the pouring channel automatically separates from the switch slide following the front mold. At the same time, there is no waste between the multiple switch slides. After the switch slide is demolded, it is directly an independent switch slide, which can save operating steps and improve work efficiency.

[0009] Preferably, the core pulling mechanism includes a core pulling column, a core pulling seat and a plurality of core pulling blocks. The core pulling seat slides on the rear mold along a core pulling direction perpendicular to the opening and closing of the mold. One end of the core pulling block is fixedly set on the rear mold, and the other end of the core pulling block slides on the core pulling seat along an inclined direction. A plurality of core pulling blocks are set on the core pulling seat and are used to form a plurality of switch slides arranged in the same row and in the same direction. When the mold is closed, the core pulling block is reset; when the mold is opened, the core pulling block performs core pulling.

[0010] By adopting the above technical solution, the movement of the front mold can drive the core pulling column to move, and the core pulling column drives the core pulling seat and the core pulling block to move along the core pulling direction, thereby switching back and forth between the reset state and the core pulling state.

[0011] Preferably, it further comprises a plurality of demoulding mechanisms, the plurality of demoulding mechanisms respectively corresponding to the plurality of switch slides, and the demoulding mechanisms are used to demould the corresponding switch slides;

[0012] The demolding mechanism includes a push rod and a driving assembly. A plurality of first grooves are provided on the upper edge of the rear mold perpendicular to the mold opening and closing direction. The plurality of first grooves correspond to a plurality of molding grooves respectively. One end of the first groove is connected with the corresponding molding groove. The push rod slides in the corresponding first groove along the length direction of the first groove. The side surface of the push rod close to the molding groove is used for forming an inclined arc surface of a molding switch slide. The driving assembly is used for driving the push rod to move. When the end of the push rod moves into the molding groove, the switch slide is separated from the molding groove.

[0013] By adopting the above technical solution, since the surface of the switch slide located on the rear mold is set in an arc surface, the push rod does not need to move in the direction of opening and closing the mold to push the switch slide out. When the push rod acts on the inclined arc surface of the switch slide, the switch slide is pushed out of the molding groove through the component force toward the side of the front mold.

[0014] Preferably, the driving assembly comprises a spring and an L-shaped rod, the sliding direction of the push rod is parallel to the moving direction of the core pulling block, a plurality of second grooves are provided on the rear mold along the opening and closing direction of the mold, the plurality of second grooves respectively correspond to the plurality of first grooves, the end of the second groove close to the front mold passes through the rear mold, the end of the first groove away from the forming groove is connected with the corresponding second groove, the L-shaped rod slides in the second groove along the length direction of the second groove, the end of the L-shaped rod facing the front mold is provided with a first inclined surface, the end of the L-shaped rod facing the push rod is provided with a second inclined surface, the end of the push rod facing the L-shaped rod is slidably connected to the second inclined surface along the inclined direction of the second inclined surface, the spring is located on the side of the L-shaped rod away from the front mold, the two ends of the spring respectively abut on the bottom wall of the second groove and the L-shaped rod, and the spring is used to drive the L-shaped rod to move toward one side of the front mold;

[0015] When the core pulling block is reset, the L-shaped rod abuts against the core pulling block, and the push rod is reset to form the switch slide; when the core pulling block is pulled to completely separate from the switch slide, the first inclined surface of the L-shaped rod abuts against the core pulling block, and the push rod pushes out the switch slide.

[0016] By adopting the above technical scheme, when the mold is closed, when the core pulling block is reset from the core pulling state toward the side of the molding groove, the core pulling block will abut against the first inclined surface, driving the L-shaped rod to overcome the elastic force of the spring and move toward the side away from the front mold. At this time, the L-shaped rod will drive the push rod to move toward the side away from the molding groove, so that the L-shaped rod is reset; when the mold is opened, in the process of pulling the core from the core pulling state toward the side away from the molding groove, when the core pulling block is pulled to completely separate from the switch slide, it will continue to move an end distance. At this time, the L-shaped rod moves toward the side of the front mold under the action of the spring, and the first inclined surface abuts against the core pulling block. Under the action of the L-shaped rod, the push rod will be pushed toward the side of the molding groove, thereby pushing the switch slide out of the molding groove.

[0017] Preferably, four positioning blocks are provided on the side surface of the rear mold facing the front mold, and the four positioning blocks respectively surround multiple molding grooves. Four positioning grooves matching the four positioning blocks are opened on the side surface of the front mold facing the rear mold. When the mold is closed, the positioning blocks are embedded in the corresponding positioning grooves.

[0018] By adopting the above technical solution, the stability of the cooperation between the front mold and the rear mold during mold closing can be improved, thereby improving the accuracy of the switch slide after injection molding.

[0019] Preferably, a T-shaped slider is formed at the tail of the core-pulling seat, a T-shaped slideway is provided on the rear mold, and the T-shaped slider is slidably matched with the T-shaped slideway.

[0020] By adopting the above technical solution, the sliding stability of the core pulling seat can be improved.

[0021] The technical effects of this utility model are mainly reflected in the following aspects:

[0022] 1. In the utility model, the molten plastic enters multiple pouring channels through multiple connecting channels and finally enters multiple molding cavities. After the mold is opened, the injection molding material in the pouring channel automatically separates from the switch slide with the front mold. At the same time, there is no waste between the multiple switch slides. After the switch slide is demolded, it is directly an independent switch slide, which can save operation steps and improve work efficiency.

[0023] 2. The utility model provides a core pulling mechanism, and the movement of the front mold can drive the core pulling column to move, and the core pulling column drives the core pulling seat and the core pulling block to move along the core pulling direction, thereby switching back and forth between the reset state and the core pulling state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of the injection mold in the related art.

[0025] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram of the injection rear mold and the core pulling mechanism in the mold closing state in the embodiment of the present application.

[0027] Figure 4 It is a structural schematic diagram of the injection rear mold and the core pulling mechanism in the mold opening state of the embodiment of the present application.

[0028] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0029] Figure 6 yes Figure 2 Cross-sectional view along line BB.

[0030] Figure 7 yes Figure 4 Sectional view along the CC line.

[0031] Figure 8 yes Figure 7 Enlarged view of point D in the middle.

[0032] Explanation of the reference numerals: 11, front mold; 111, pouring channel; 112, pouring port; 113, connecting channel; 12, rear mold; 121, positioning block; 122, first groove; 123, second groove; 124, T-shaped slide; 13, molding groove; 2, core pulling mechanism; 21, core pulling column; 22, core pulling seat; 221, T-shaped slider; 23, core pulling block; 3, demoulding mechanism; 31, ejector rod; 311, third inclined surface; 4, driving assembly; 41, spring; 42, L-shaped rod; 421, first inclined surface; 422, second inclined surface; 5, switch slide. DETAILED DESCRIPTION

[0033] The following is combined with Figure 2-8 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0034] The embodiment of the present application discloses a plastic switch slide injection molding structure.

[0035] Reference Figure 2-Figure 6In this embodiment, a plastic switch slide injection molding structure includes a front mold 11, a rear mold 12 and two core pulling mechanisms 2. A plurality of molding grooves 13 are provided on the front mold 11 and the rear mold 12. The plurality of molding grooves 13 are distributed in two rows and four columns. The two core pulling mechanisms 2 are respectively used to pull the cores of the two rows of molded switch slides 5. The two molding grooves 13 together form a molding cavity of the switch slide 5. A plurality of pouring channels 111 are provided on the front mold 11. The plurality of pouring channels 111 correspond to and connect the plurality of molding grooves 13 on the front mold 11. The front mold 11 has a pouring port 112 and a plurality of connecting channels 113. The pouring port 112 is connected to one of the connecting channels 113. The plurality of pouring channels 111 are connected to each other through the plurality of connecting channels 113.

[0036] Reference Figure 2-Figure 6 After the glue is injected into the pouring port 112, the molten plastic enters the multiple pouring channels 111 through the multiple connecting channels 113, and finally enters the multiple molding cavities. After the mold is opened, the injection molding material in the pouring channel 111 automatically separates from the switch slide 5 along with the front mold 11, and there is no waste between the multiple switch slides 5. Therefore, after the switch slide 5 is demolded, it is directly an independent switch slide 5, which can save the operation steps of separating the waste from the switch slide 5 and improve the work efficiency.

[0037] Reference Figure 2 and Figure 3 , the front mold 11 can be driven by a cylinder. Four positioning blocks 121 are provided on the side of the rear mold 12 facing the front mold 11, and the four positioning blocks 121 respectively surround the multiple molding grooves 13. Four positioning grooves matching the four positioning blocks 121 are opened on the side of the front mold 11 facing the rear mold 12. When the mold is closed, the positioning blocks 121 are embedded in the corresponding positioning grooves. It can improve the stability of the cooperation between the front mold 11 and the rear mold 12 when the mold is closed, thereby improving the accuracy of the switch slide 5 after injection molding.

[0038] Reference Figure 2-Figure 4 The two core pulling mechanisms 2 are respectively located on both sides of the two rows of switch slides 5. The core pulling mechanism 2 includes a core pulling column 21, a core pulling seat 22 and four core pulling blocks 23. The core pulling seat 22 slides on the rear mold 12 along the core pulling direction perpendicular to the opening and closing of the mold. One end of the core pulling block 23 is fixedly set on the rear mold 12, and the other end of the core pulling block 23 slides on the core pulling seat 22 along the inclined direction. The four core pulling blocks 23 are set on the core pulling seat 22 for molding four switch slides 5 in the same row. When the mold is closed, the core pulling block 23 is reset; when the mold is opened, the core pulling block 23 performs core pulling.

[0039] Reference Figure 2-Figure 4 The movement of the front mold 11 can drive the core pulling column 21 to move, and the core pulling column 21 drives the core pulling seat 22 and the core pulling block 23 to move along the core pulling direction, thereby switching back and forth between the reset state and the core pulling state.

[0040] Reference Figure 2-Figure 4 The tail of the core-pulling seat 22 is formed with a T-shaped slider 221, and the rear mold 12 is provided with a T-shaped slideway 124, and the T-shaped slider 221 slides and cooperates with the T-shaped slideway 124. The sliding stability of the core-pulling seat 22 can be improved.

[0041] Reference Figure 7 and Figure 8 In the present embodiment, a plastic switch slide injection molding structure further includes a plurality of demoulding mechanisms 3, wherein the plurality of demoulding mechanisms 3 correspond to the plurality of switch slides 5, respectively, and the demoulding mechanisms 3 are used to demould the corresponding switch slides 5. The demoulding mechanism 3 includes a push rod 31 and a driving assembly 4. A plurality of first grooves 122 are provided on the upper edge of the rear mold 12 perpendicular to the mold opening and closing direction, wherein the plurality of first grooves 122 correspond to the plurality of molding grooves 13, respectively, and one end of the first groove 122 is connected to the corresponding molding groove 13. The push rod 31 slides in the corresponding first groove 122 along the length direction of the first groove 122. The side surface of the push rod 31 close to the molding groove 13 is used to mold the inclined arc surface of the switch slide 5. The driving assembly 4 is used to drive the push rod 31 to move. When the end of the push rod 31 moves into the molding groove 13, the switch slide 5 is separated from the molding groove 13.

[0042] Reference Figure 7 and Figure 8 Since the surface of the switch slide 5 located on the rear mold 12 is arranged in an arc surface, the push rod 31 does not need to move along the mold opening and closing direction to push out the switch slide 5. When the push rod 31 acts on the inclined arc surface of the switch slide 5, the switch slide 5 is pushed out of the molding groove 13 through the component force toward the side of the front mold 11.

[0043] Reference Figure 7 and Figure 8 The driving assembly 4 includes a spring 41 and an L-shaped rod 42. The sliding direction of the ejector rod 31 is parallel to the moving direction of the core pulling block 23. A plurality of second grooves 123 are provided on the rear mold 12 along the mold opening and closing direction. The plurality of second grooves 123 correspond to the plurality of first grooves 122 respectively. The end of the second groove 123 close to the front mold 11 penetrates the rear mold 12. The end of the first groove 122 away from the molding groove 13 is connected to the corresponding second groove 123. The L-shaped rod 42 slides in the second groove 123 along the length direction of the second groove 123. The L-shaped rod A first inclined surface 421 is provided at one end of the L-shaped rod 42 facing the front mold 11, a second inclined surface 422 is provided at one end of the L-shaped rod 42 facing the push rod 31, and one end of the push rod 31 facing the L-shaped rod 42 is slidably connected to the second inclined surface 422 along the inclination direction of the second inclined surface 422. The spring 41 is located on the side of the L-shaped rod 42 away from the front mold 11, and both ends of the spring 41 are respectively abutted against the bottom wall of the second groove 123 and the L-shaped rod 42. The spring 41 is used to drive the L-shaped rod 42 to move toward the side of the front mold 11.

[0044] Reference Figure 7 and Figure 8 When the core pulling block 23 is reset, the L-shaped rod 42 abuts against the core pulling block 23, and the push rod 31 is reset to form the switch slide 5; when the core pulling block 23 is pulled out to completely separate from the switch slide 5, the first inclined surface 421 of the L-shaped rod 42 abuts against the core pulling block 23, and the push rod 31 pushes out the switch slide 5.

[0045] Reference Figure 7 and Figure 8 When the mold is closed, when the core pulling block 23 is reset from the core pulling state toward the side of the molding groove 13, the core pulling block 23 will abut against the first inclined surface 421, driving the L-shaped rod 42 to overcome the elastic force of the spring 41 and move toward the side away from the front mold 11. At this time, the L-shaped rod 42 will drive the ejector rod 31 to move toward the side away from the molding groove 13, so that the L-shaped rod 42 is reset. In order to prevent the ejector rod 31 from continuing to retreat under the action of the injection pressure, the ejector rod 31 is in the extreme position after being reset. The ejector rod 31 cannot continue to retreat by abutting against the L-shaped rod 42. When the mold is opened, the core pulling block 23 is pulled from the core pulling state toward the side away from the molding groove 13. After the core pulling block 23 is pulled to completely separate from the switch slide 5, it will continue to move an end distance. At this time, the L-shaped rod 42 moves toward the side of the front mold 11 under the action of the spring 41, and the first inclined surface 421 abuts against the core pulling block 23. Under the action of the L-shaped rod 42, the push rod 31 will be pushed toward the side of the molding groove 13, thereby pushing the switch slide 5 out of the molding groove 13.

[0046] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A plastic switch slide injection molding structure, comprising a front mold (11), a rear mold (12) and a core pulling mechanism (2), wherein the front mold (11) and the rear mold (12) are both provided with a plurality of molding grooves (13), and two opposite molding grooves (13) together form a molding cavity of the switch slide (5), characterized in that: The front mold (11) is provided with a plurality of pouring channels (111), the plurality of pouring channels (111) respectively correspond to and are connected to a plurality of molding grooves (13) on the front mold (11), the front mold (11) is provided with a pouring port (112) and a plurality of connecting channels (113), the pouring port (112) is connected to one of the connecting channels (113), and the plurality of pouring channels (111) are connected to each other via the plurality of connecting channels (113).

2. The plastic switch slide injection molding structure according to claim 1, characterized in that: The core pulling mechanism (2) comprises a core pulling column (21), a core pulling seat (22) and a plurality of core pulling blocks (23); the core pulling seat (22) slides on the rear mold (12) along a core pulling direction perpendicular to the mold opening and closing; one end of the core pulling block (23) is fixedly arranged on the rear mold (12); the other end of the core pulling block (23) slides on the core pulling seat (22) along an inclined direction; a plurality of core pulling blocks (23) are arranged on the core pulling seat (22) and are used to form a plurality of switch slides (5) arranged in the same row and in the same direction; when the mold is closed, the core pulling block (23) is reset; when the mold is opened, the core pulling block (23) performs core pulling.

3. The plastic switch slide injection molding structure according to claim 2, characterized in that: It also comprises a plurality of demoulding mechanisms (3), wherein the plurality of demoulding mechanisms (3) respectively correspond to the plurality of switch slides (5), and the demoulding mechanisms (3) are used to demould the corresponding switch slides (5); The demoulding mechanism (3) comprises a push rod (31) and a driving assembly (4); a plurality of first grooves (122) are provided on the rear mold (12) perpendicular to the mold opening and closing direction; the plurality of first grooves (122) respectively correspond to a plurality of molding grooves (13); one end of the first groove (122) is connected to the corresponding molding groove (13); the push rod (31) slides in the corresponding first groove (122) along the length direction of the first groove (122); a side surface of the push rod (31) close to the molding groove (13) is used to form an inclined arc surface of a molding switch slide (5); the driving assembly (4) is used to drive the push rod (31) to move; when the end of the push rod (31) moves into the molding groove (13), the switch slide (5) is separated from the molding groove (13).

4. The plastic switch slide injection molding structure according to claim 3, characterized in that: The driving assembly (4) comprises a spring (41) and an L-shaped rod (42); the sliding direction of the push rod (31) is parallel to the moving direction of the core pulling block (23); a plurality of second grooves (123) are provided on the rear mold (12) along the mold opening and closing direction; the plurality of second grooves (123) respectively correspond to the plurality of first grooves (122); an end of the second groove (123) close to the front mold (11) passes through the rear mold (12); an end of the first groove (122) away from the molding groove (13) is connected to the corresponding second groove (123); the L-shaped rod (42) slides in the second groove (123) along the length direction of the second groove (123); the L-shaped A first inclined surface (421) is provided at one end of the rod (42) facing the front mold (11), a second inclined surface (422) is provided at one end of the L-shaped rod (42) facing the push rod (31), and one end of the push rod (31) facing the L-shaped rod (42) is slidably connected to the second inclined surface (422) along the inclined direction of the second inclined surface (422), the spring (41) is located on the side of the L-shaped rod (42) away from the front mold (11), and the two ends of the spring (41) are respectively abutted against the bottom wall of the second groove (123) and the L-shaped rod (42), and the spring (41) is used to drive the L-shaped rod (42) to move toward one side of the front mold (11); When the core pulling block (23) is reset, the L-shaped rod (42) abuts against the core pulling block (23), and the push rod (31) is reset to form the switch slide (5); when the core pulling block (23) is pulled to completely detach from the switch slide (5), the first inclined surface (421) of the L-shaped rod (42) abuts against the core pulling block (23), and the push rod (31) pushes out the switch slide (5).

5. The plastic switch slide injection molding structure according to claim 1, characterized in that: Four positioning blocks (121) are provided on a side surface of the rear mold (12) facing the front mold (11), and the four positioning blocks (121) respectively surround a plurality of molding grooves (13). Four positioning grooves matching the four positioning blocks (121) are opened on a side surface of the front mold (11) facing the rear mold (12), and when the molds are closed, the positioning blocks (121) are embedded in the corresponding positioning grooves.

6. The plastic switch slide injection molding structure according to claim 2, characterized in that: A T-shaped slider (221) is formed at the tail of the core-pulling seat (22), a T-shaped slideway (124) is provided on the rear mold (12), and the T-shaped slider (221) is slidably matched with the T-shaped slideway (124).

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