Positioning core for injection molding of inner hole of rod sleeve
By designing the mold core insertion cavity and split positioning core structure of the rod sleeve inner hole injection molding positioning core in automotive parts processing equipment, the problem of low accuracy of traditional secondary injection molding is solved, and rapid positioning and efficient injection molding are achieved, improving the Productivity and product consistency.
Patent Information
- Application Number
- CN202323314291.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-06
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-06
AI Technical Summary
In the secondary injection molding process in the automotive industry, traditional methods lead to low injection molding accuracy and cumbersome operation, which affects production efficiency, especially molds that cannot be designed into conventional slider or core pulling structures, affecting product consistency.
A rod sleeve inner hole injection molding positioning core is designed, adopting a split structure of the mold core insertion cavity and the positioning core. It can achieve rapid positioning and precise injection molding through movable inserts and positioning rods, combining the injection molding ring cavity and air intake groove. Ensure high injection molding accuracy.
It realizes the positioning and easy operation of the secondary injection molding of the shifter rod sleeve, significantly improves production efficiency and product consistency, and supports the replacement operation method of changing parts while producing.
Smart Images
Figure CN222156430U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile parts processing equipment, and specifically relates to a rod sleeve inner hole injection molding positioning core which has the advantages of quick positioning, simple operation, high injection molding accuracy, and can greatly improve production efficiency and effectively ensure product consistency. Background Art
[0002] At present, there is a type of plastic parts for the automotive industry (for example, automobile shifter rod sleeves) that need to be secondary injection molded. However, in the process of secondary injection molding of plastic parts, since there are multiple locations for secondary injection molding, it is impossible to design a mold in the form of a conventional slider or core-pulling structure. In addition, the traditional operation method has low injection molding accuracy and cumbersome operation, which affects production efficiency. Therefore, it is necessary to improve the secondary injection molding method and device of the shifter rod sleeve in the prior art. Utility Model Content
[0003] The utility model aims at solving the above problems and provides a rod sleeve inner hole injection molding positioning core which has the advantages of quick positioning, simple operation, high injection molding accuracy, and can greatly improve production efficiency and effectively ensure product consistency.
[0004] The technical solution adopted by the utility model is: the rod sleeve inner hole injection molding positioning core comprises a rod sleeve body, which is characterized in that: a core plug-in cavity is arranged inside the rod sleeve body, a core access port is arranged at one end of the core plug-in cavity, and a positioning core is arranged in the core plug-in cavity, and the positioning core is movably plugged into the core plug-in cavity via the core access port; an injection molding annular cavity is formed between the outer wall of the middle part of the positioning core and the inner wall of the core plug-in cavity, and an injection molding hole is arranged on the side wall of the sleeve body at the position of the injection molding annular cavity; a support column is arranged on the side of the upper end of the rod sleeve body, and an assembly wire hanging bottom plate is arranged at the lower end of the rod sleeve body.
[0005] The positioning mold core includes a movable insert, on which a positioning rod is inserted, and the positioning rod is connected to the positioning connection hole on the movable insert through a connecting pin. The split structure of the positioning mold core facilitates the processing and alignment of the mold core positioning structure, and facilitates later maintenance and replacement.
[0006] The movable insert comprises an insert body, the insert body is provided with an insert rod installation hole, and the lower end of the insert body is provided with positioning surfaces on both sides; the positioning surfaces are provided with positioning connection holes, so that the positioning insert rod can be inserted into the insert rod installation hole of the insert body, and the positioning surfaces on both sides of the lower end of the insert body are used to facilitate the insertion and positioning of the positioning mold core.
[0007] The outer wall of the insert body is also provided with a plurality of air inlet grooves, so as to facilitate the smooth injection molding into the injection annular cavity through the injection hole, prevent air entrapment, and facilitate the installation and removal of the positioning mold core through the ventilation effect of the injection molding air inlet grooves provided on the outer wall of the movable insert.
[0008] The positioning plug rod comprises a plug rod body, the lower end of the plug rod body is provided with an insert connection hole, the upper end of the plug rod body is provided with a support rod, the middle part of the plug rod body is provided with an injection molding block at the position of the injection molding annular cavity, and a positioning flange is also provided between the upper end of the injection molding block and the lower end of the support rod. The positioning plug rod is connected with the positioning connection hole of the movable insert by using the insert connection hole, and then the positioning plug rod and the movable insert are connected into a whole, and the position of the positioning core in the mold core plug-in cavity of the rod sleeve body is fixed by the support rod and the positioning flange, so that the injection molding block in the middle part of the plug rod body and the inner wall of the mold core plug-in cavity form an injection molding annular cavity of a desired position and shape.
[0009] The outer side wall of the injection molding block in the middle of the rod body is also provided with a draft angle, so as to facilitate the removal of the positioning mold core from the mold core insertion cavity of the rod sleeve body after the injection molding is completed.
[0010] The other end of the rod sleeve body is provided with a core disassembly auxiliary hole, which is connected to the upper end of the core plug-in cavity. When the positioning core needs to be disassembled, the core disassembly auxiliary hole at the end of the rod sleeve body is used to facilitate the removal of the positioning core from the core removal opening at the other end of the core plug-in cavity.
[0011] The beneficial effects of the utility model are as follows: since the utility model adopts a rod sleeve body with a core plug-in cavity provided inside, a core access opening is provided at one end of the core plug-in cavity, a positioning core is provided in the core plug-in cavity, and the positioning core is movably plugged into the core plug-in cavity via the core access opening; an injection molding annular cavity is formed between the outer wall of the middle part of the positioning core and the inner wall of the core plug-in cavity, an injection molding hole is provided on the side wall of the sleeve body at the position of the injection molding annular cavity, a support column is provided on the side of the upper end of the rod sleeve body, and an assembly hanging line bottom plate is provided at the lower end of the rod sleeve body, so the design is reasonable, the structure is compact, the positioning of the secondary injection molding of the shifter rod sleeve is fast, the operation is simple, the injection molding accuracy rate is high, and the production efficiency can be greatly improved, the utilization rate of the equipment is improved, the product consistency is guaranteed, and the processing quality of the product is improved. Moreover, when the equipment is injection molding, each mold has one cavity, and multiple injection molding positioning cores can be made. The replacement production operation mode is adopted to achieve the effect of changing parts while producing. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 yes Figure 1A structural schematic diagram of the positioning mold core.
[0014] Figure 3 yes Figure 2 A structural schematic diagram of the movable insert in.
[0015] Figure 4 yes Figure 3 Top view of the .
[0016] Figure 5 yes Figure 3 Left view of .
[0017] Figure 6 yes Figure 2 A structural schematic diagram of a positioning rod in FIG.
[0018] Explanation of the serial numbers in the figure: 1 rod sleeve body, 2 core plug-in cavity, 3 core take-out port, 4 positioning core, 5 injection molding annular cavity, 6 injection molding hole, 7 core disassembly auxiliary hole, 8 support column, 9 assembly hanging wire base plate, 10 movable insert, 11 positioning plug rod, 12 positioning connecting hole, 13 insert body, 14 plug rod installation hole, 15 air inlet groove, 16 positioning surface, 17 plug rod body, 18 injection molding body block, 19 positioning flange, 20 support rod, 21 insert connecting hole. DETAILED DESCRIPTION
[0019] according to Figures 1 to 6 The specific structure of the utility model is described in detail. The rod sleeve inner hole injection molding positioning core comprises a rod sleeve body 1, the rod sleeve body 1 is provided with a core plug-in cavity 2 for accommodating a positioning core 4, one end of the core plug-in cavity 2 is provided with a core access opening 3, and the other end of the core plug-in cavity 2 is provided with a core disassembly auxiliary hole 7, and the core disassembly auxiliary hole 7 is connected with the upper end of the core plug-in cavity 2; and then, when it is necessary to disassemble the positioning core 4, the core disassembly auxiliary hole 7 at the end of the rod sleeve body 1 is used to facilitate the removal of the positioning core 4 from the core access opening 3 at the other end of the core plug-in cavity 2. It can be understood that, according to specific usage needs, the core disassembly auxiliary hole 7 can also be used as an assembly positioning hole.
[0020] A positioning core 4 is provided in the core plug-in cavity 2 of the rod sleeve body 1, and the positioning core 4 is movably plugged into the core plug-in cavity 2 via the core access port 3. An injection molding annular cavity 5 is formed between the outer wall of the middle part of the positioning core 4 and the inner wall of the core plug-in cavity 2, and an injection molding hole 6 is provided on the side wall of the sleeve body at the position of the injection molding annular cavity 5. A support column 8 is provided on the side of the upper end of the rod sleeve body 1, and an assembly hanging line base plate 9 is provided at the lower end of the rod sleeve body 1. The positioning core 4 includes a movable insert 10, and a positioning rod 11 is plugged into the movable insert 10, and the positioning rod 11 is connected to the positioning connecting hole 12 on the movable insert 10 through a connecting pin; the split structure of the positioning core 4 facilitates the processing and alignment of the core positioning structure, and facilitates later maintenance and replacement.
[0021] The movable insert 10 of the positioning mold core 4 is composed of an insert body 13, and an insert rod installation hole 14 is arranged inside the insert body 13. Positioning surfaces 16 are arranged on both sides of the lower end of the insert body 13, and a positioning connection hole 12 is arranged on the positioning surface 16. Therefore, the positioning insert rod 11 is inserted into the insert rod installation hole 14 of the insert body 13, and the positioning surfaces 16 on both sides of the lower end of the insert body 13 are used to facilitate the insertion and positioning of the positioning mold core 4. In addition, four groups of air inlet grooves 15 are also arranged on the outer wall of the insert body 13, so as to facilitate the smooth injection molding into the injection annular cavity 5 through the injection hole 6 and prevent air entrapment through the ventilation effect of the injection molding air inlet grooves 15 arranged on the outer wall of the movable insert 10; and to facilitate the installation and removal of the positioning mold core 4.
[0022] The positioning rod 11 of the positioning mold core 4 is composed of a rod body 17, the lower end of the rod body 17 is provided with an insert connecting hole 21, and the upper end of the rod body 17 is provided with a support rod 20; and an injection molding block 18 is provided in the middle part of the rod body 17, located at the position of the injection annular cavity 5, and a draft angle is also provided on the outer side wall of the injection molding block 18, and a positioning flange 19 is also provided between the upper end of the injection molding block 18 and the lower end of the support rod 20. Furthermore, the positioning rod 11 is connected to the positioning connection hole 12 of the movable insert 10 by using the insert connection hole 21, so as to connect the positioning rod 11 and the movable insert 10 into a whole; and the position of the positioning core 4 in the core plug-in cavity 2 of the rod sleeve body 1 is fixed by using the support rod 20 and the positioning flange 19, so that the injection mold block 18 in the middle of the rod body 17 and the inner wall of the core plug-in cavity 2 form an injection molded annular cavity 5 of the required position and shape to ensure the injection molding accuracy; and after the injection molding is completed, the draft angle of 0.5 to 1 degree on the outer wall of the injection mold block 18 is used to facilitate the removal of the positioning core 4 from the core plug-in cavity 2 of the rod sleeve body 1.
[0023] When the rod sleeve inner hole injection molding positioning core is used, first, the positioning plug rod 11 is inserted into the plug rod installation hole 14 of the insert body 13, and the position of the positioning mold core 4 in the mold core plug-in cavity 2 of the rod sleeve body 1 is fixed by the support rod 20 and the positioning flange 19; then, the positioning plug rod 11 is connected with the positioning connection hole 12 of the movable insert 10 by using the insert connection hole 21, and then the positioning plug rod 11 and the movable insert 10 are connected to form a positioning mold core 4 with a split structure. After that, the positioning mold core 4 is inserted into the mold core plug-in cavity 2 of the rod sleeve body 1 through the mold core access port 3, and gently pushed down to allow the mold core to be completely inserted into the plug-in cavity, so that the injection molding body block 18 in the middle of the positioning plug rod 11 of the positioning mold core 4 and the inner wall of the mold core plug-in cavity 2 form an injection molding annular cavity 5 of the desired position and shape, and an injection molding hole 6 is provided on the sleeve body side wall at the position of the injection molding annular cavity 5.
[0024] Then, the rod sleeve body 1 with the positioning mold core 4 inserted inside is placed in the designated position of the injection mold, and injection molding begins. During the injection molding of the first rod sleeve, the second rod sleeve can be plugged, assembled and placed. After the injection molding of the first rod sleeve is completed, the second rod sleeve can be placed for injection molding; and during the injection molding of the second rod sleeve, the mold core in the first rod sleeve can be taken out, and the next rod sleeve can be plugged, assembled and placed, and so on. The operation is convenient and fast, and the production rhythm is continuous. While ensuring product consistency, it also improves production efficiency.
Claims
1. A rod sleeve inner hole injection molding positioning core, comprising a rod sleeve body (1), characterized in that: The rod sleeve body (1) is provided with a core plug-in cavity (2) inside, a core access opening (3) is provided at one end of the core plug-in cavity (2), and a positioning core (4) is provided inside the core plug-in cavity (2), the positioning core (4) is movably plugged into the core plug-in cavity (2) via the core access opening (3); an injection molding annular cavity (5) is formed between the outer wall of the middle part of the positioning core (4) and the inner wall of the core plug-in cavity (2), and an injection molding hole (6) is provided on the side wall of the sleeve body at the position of the injection molding annular cavity (5); a support column (8) is provided on the side of the upper end of the rod sleeve body (1), and an assembly wire hanging bottom plate (9) is provided at the lower end of the rod sleeve body (1).
2. The rod sleeve inner hole injection molding positioning core according to claim 1, characterized in that: The positioning mold core (4) comprises a movable insert (10), a positioning rod (11) is inserted into the movable insert (10), and the positioning rod (11) is connected to a positioning connection hole (12) on the movable insert (10) via a connecting pin.
3. The rod sleeve inner hole injection molding positioning core according to claim 2, characterized in that: The movable insert (10) comprises an insert body (13), a rod mounting hole (14) is provided inside the insert body (13), positioning surfaces (16) are provided on both sides of the lower end of the insert body (13), and a positioning connection hole (12) is provided on the positioning surface (16).
4. The rod sleeve inner hole injection molding positioning core according to claim 3, characterized in that: A plurality of groups of air inlet grooves (15) are also provided on the outer wall of the insert body (13).
5. The rod sleeve inner hole injection molding positioning core according to claim 2, characterized in that: The positioning plug rod (11) comprises a plug rod body (17), the lower end of the plug rod body (17) is provided with an insert connection hole (21), the upper end of the plug rod body (17) is provided with a support rod (20), an injection molding block (18) is provided in the middle of the plug rod body (17) at the position of the injection molding annular cavity (5), and a positioning flange (19) is further provided between the upper end of the injection molding block (18) and the lower end of the support rod (20).
6. The rod sleeve inner hole injection molding positioning core according to claim 5, characterized in that: A draft angle is also provided on the outer side wall of the injection-molded body block (18) in the middle of the insert rod body (17).
7. The rod sleeve inner hole injection molding positioning core according to claim 1, characterized in that: The other end of the rod sleeve body (1) is provided with a core disassembly auxiliary hole (7), and the core disassembly auxiliary hole (7) is connected to the upper end of the core insertion cavity (2).