Spiral hot runner pouring mechanism of injection mold for automotive trim panel

Abstract

The utility model provides a spiral hot runner pouring mechanism of an injection mold for an automotive trim panel, and belongs to the technical field of molds. The injection mold comprises an upper mold plate and a lower mold plate, a forming cavity is formed between the upper mold plate and the lower mold plate, an injection molding plate is arranged on the upper side of the upper mold plate, a spiral feeding assembly is arranged at a feeding port of the injection molding plate, and a multi-point pouring assembly is further arranged on the injection molding plate. And a side core-pulling mechanism connected with the forming cavity is also arranged at the side part of the lower template. The injection molding plate can feed glue into the forming cavity through the multi-point pouring assembly, the glue feeding efficiency can be improved, the spiral feeding assembly at the feeding port can prevent uneven temperature caused by inconsistent flow velocity of the side wall of the runner and the middle of the runner, and after a product is subjected to injection molding, during mold opening, the side core-pulling mechanism can automatically perform core pulling.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a spiral hot runner pouring mechanism of an injection mold for an automobile interior trim panel. Background Art

[0002] Hot runner systems inject molten plastic into the mold cavity and heat the mold to perform injection molding. This system shortens the molding cycle, improves efficiency, saves plastic raw materials, reduces waste, improves product quality, and eliminates post-processing. This facilitates production automation and expands the application of the injection molding process. However, the injection molding gating structure in existing hot runner molds often results in inconsistent flow rates between the runner sidewalls and the center of the runner during injection molding, leading to uneven temperatures.

[0003] For example, a Chinese patent discloses a mold runner pouring mechanism [application number: 201310747247.5], which includes a fixed mold and a movable mold, a cavity is provided in the fixed mold, a core is provided in the movable mold, a nozzle is provided at the center of the fixed mold, a main flow channel is provided between the nozzle and the cavity, and an ejector pin is provided at a position corresponding to the core and the main flow channel outlet, and the lower end of the ejector pin is fixedly connected to the movable mold. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a spiral hot runner pouring mechanism for an injection mold of an automobile interior trim panel.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A spiral hot runner pouring mechanism for an injection mold for an automobile interior trim panel comprises an upper mold plate and a lower mold plate, a molding cavity is provided between the upper and lower mold plates, an injection molding plate is provided on the upper side of the upper mold plate, a spiral feeding assembly is provided at the feed port of the injection molding plate, a multi-point pouring assembly is also provided on the injection molding plate, and a side core pulling mechanism connected to the molding cavity is also provided on the side of the lower mold plate.

[0007] In the above-mentioned spiral hot runner feeding mechanism of the automobile interior panel injection mold, the spiral feeding assembly includes a feeding pipe body arranged on the top of the injection molding plate, and a spiral feeding connector is provided at the bottom of the feeding pipe body, and the spiral feeding connector is connected to the glue diversion channel in the injection molding plate.

[0008] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior panel injection mold, the spiral pouring connection includes a blocking head and a spiral feeding head arranged on the periphery of the blocking head. The blocking head is sealed at the bottom of the pouring pipe body. The spiral feeding head is provided with a plurality of spiral feeding grooves connected to the pouring pipe body, and the spiral feeding grooves are connected to the glue diversion channel.

[0009] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior trim panel injection mold, the bottom of the plugging head is inserted into the glue diversion flow channel and the bottom of the plugging head is conical.

[0010] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior panel injection mold, a plurality of injection holes corresponding to the spiral feed troughs are circumferentially arranged at the bottom of the pouring pipe body, and the two ends of the injection holes are respectively connected to the pouring pipe body and the spiral feed trough.

[0011] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior trim panel injection mold, a plurality of spiral feed grooves provided on the spiral feed head are evenly spaced along the circumferential direction of the center line of the pouring pipe body.

[0012] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior panel injection mold, the multi-point pouring assembly includes a plurality of injection tubes vertically fixed at the bottom of the injection molding plate, the bottom of the injection molding tube vertically passes through the upper mold plate and is connected to the molding cavity, and the top of the injection molding tube is connected to the branch flow channel of the glue diversion flow channel in the injection molding plate.

[0013] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior panel injection mold, the side core pulling mechanism includes a core pulling slider slidingly arranged on the lower template, the inner end of the core pulling slider is fixedly connected to the side insert inserted into the molding cavity, and the bottom of the upper template is obliquely fixed with a driving rod, and the driving rod is inserted into the core pulling slider and slidably cooperates with the core pulling slider.

[0014] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior trim panel injection mold, an ejection mechanism is also provided on the lower side of the lower mold plate.

[0015] In the above-mentioned spiral hot runner pouring mechanism of the automobile interior panel injection mold, the ejection mechanism includes a bottom plate arranged on the lower side of the lower template, a top plate is arranged between the bottom plate and the lower template, and also includes four lifting cylinders. The lifting cylinders are fixed to the top of the top plate and the output shaft ends of the lifting cylinders pass through the top plate and are fixedly connected to the bottom plate. Several straight ejector rods are fixed to the top plate, and the tops of the straight ejector rods are detachably connected to straight ejector blocks by bolts. The tops of the straight ejector blocks are connected to the molding cavity.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. The injection molding plate can feed glue into the molding cavity through the multi-point feeding assembly, which can improve the glue feeding efficiency. The spiral feeding assembly at the feed port can prevent the inconsistent flow rate between the side wall and the middle of the flow channel, which leads to uneven temperature. After the product is injection molded, the side core pulling mechanism can automatically pull the core when the mold is opened.

[0018] 2. After the injection liquid enters the main body of the injection pipe through the inlet gate, it can enter the glue diversion channel in the injection molding plate through the spiral inlet connector. The spiral inlet connector can prevent the uneven flow rate between the side wall and the middle of the channel, which leads to uneven temperature.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a partial structural diagram of the utility model;

[0022] Figure 3 It is a structural diagram of the lower template;

[0023] Figure 4 It is a structural diagram of the ejection mechanism;

[0024] Figure 5 It is a structural diagram of the spiral feed component.

[0025] In the figure, there are upper template 1, lower template 2, injection plate 3, spiral feed assembly 4, multi-point pouring assembly 5, side core pulling mechanism 6, pouring pipe body 7, spiral pouring connector 8, plugging head 9, spiral feed head 10, spiral feed trough 11, injection hole 12, injection tube 13, core pulling slider 14, side insert 15, drive rod 16, ejection mechanism 17, bottom plate 18, top plate 19, lifting cylinder 20, straight ejector rod 21, straight ejector block 22, and feed port 23. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a spiral hot runner pouring mechanism of an injection mold for an automobile interior trim panel includes an upper template 1 and a lower template 2. A molding cavity is provided between the upper template 1 and the lower template 2. An injection plate 3 is provided on the upper side of the upper template 1. A spiral feeding component 4 is provided at the feed port 23 of the injection plate 3. A multi-point pouring component 5 is also provided on the injection plate 3. The side of the lower template 2 is also provided with a side core pulling mechanism 6 connected to the molding cavity.

[0027] In the utility model, the injection plate 3 can feed glue into the molding cavity through the multi-point feeding component 5, which can improve the glue feeding efficiency. The spiral feeding component 4 at the feed port 23 can prevent the flow rate on the side wall and the middle of the flow channel from being inconsistent, resulting in uneven temperature. After the product is injection molded, when the mold is opened, the side core pulling mechanism 6 can automatically pull the core.

[0028] Specifically, the screw feed assembly 4 includes a main inlet pipe 7 mounted on top of the injection molding plate 3. A screw feed connector 8 is provided at the bottom of the main inlet pipe 7. The screw feed connector 8 is connected to the glue diversion flow channel within the injection molding plate 3. After the injection molding liquid enters the main inlet pipe 7 through the inlet gate, it can enter the glue diversion flow channel within the injection molding plate 3 through the screw feed connector 8. The screw feed connector 8 can prevent uneven flow rates on the side walls and in the middle of the flow channel, which can lead to uneven temperature.

[0029] Specifically, combined Figure 5 As shown. The spiral pouring connector 8 includes a plugging head 9 and a spiral feed head 10 arranged on the periphery of the plugging head 9. The plugging head 9 is sealed at the bottom of the pouring pipe body 7. The spiral feed head 10 is provided with a plurality of spiral feed grooves 11 connected to the pouring pipe body 7. The spiral feed grooves 11 are connected to the glue diversion flow channel. The bottom of the plugging head 9 is inserted into the glue diversion flow channel and the bottom of the plugging head 9 is conical. The bottom of the pouring pipe body 7 is provided with a plurality of injection holes 12 corresponding to the spiral feed grooves 11 along the circumferential direction. The two ends of the injection holes 12 are respectively connected to the pouring pipe body 7 and the spiral feed grooves 11. The injection liquid in the pouring pipe body 7 can enter the spiral feed grooves 11 on the side wall of the spiral feed head 10 through the injection holes and enter the glue diversion flow channel through the spiral feed grooves.

[0030] Specifically, a plurality of spiral feeding grooves 11 provided on the spiral feeding head 10 are evenly spaced in the circumferential direction along the center line of the pouring pipe body 7 .

[0031] Specifically, the multi-point pouring assembly 5 includes several injection tubes 13 vertically fixed to the bottom of the injection molding plate 3. The bottom of the injection tubes 13 vertically penetrates the upper mold plate 1 and is connected to the molding cavity. The top of the injection tubes 13 is connected to the branch flow channels of the glue diversion flow channel in the injection molding plate 3. The injection molding liquid entering the glue diversion flow channel in the injection molding plate can be diverted into the branch flow channels through the glue diversion flow channels, then enter the injection tubes through the branch flow channels, and finally injected into the molding cavity through the injection tubes.

[0032] Specifically, the side core-pulling mechanism 6 includes a core-pulling slider 14 slidably mounted on the lower mold plate 2. The inner end of the core-pulling slider 14 is fixedly connected to a side insert 15 inserted into the molding cavity. A driving rod 16 is fixed obliquely to the bottom of the upper mold plate 1. The driving rod 16 is inserted into and slidably engages with the core-pulling slider 14. When the mold is opened, the upward movement of the upper mold plate can drive the driving rod upward, and the upward movement of the driving rod can drive the core-pulling slider 14 to translate away from the molding cavity, thereby realizing automatic core pulling of the side insert.

[0033] Specifically, an ejection mechanism 17 is also provided on the lower side of the lower mold plate 2. The ejection mechanism 17 includes a bottom plate 18 provided on the lower side of the lower mold plate 2, a top plate 19 provided between the bottom plate 18 and the lower mold plate 2, and four lifting cylinders 20. The lifting cylinders 20 are fixed to the top of the top plate 19, and the output shaft ends of the lifting cylinders 20 pass through the top plate 19 and are fixedly connected to the bottom plate 18. A plurality of straight ejector rods 21 are fixedly connected to the top of the top plate 19. The tops of the straight ejector rods 21 are detachably connected to straight ejector blocks 22 via bolts. The tops of the straight ejector blocks 22 are connected to the molding cavity. After the product is injection molded, the synchronous action of the four lifting cylinders can drive the ejector plate to move vertically upward. The vertical upward movement of the ejector plate can apply a vertical upward thrust to the product through the straight ejector rods and straight ejector blocks, thereby ejecting the product from the lower mold plate.

[0034] The working principle of the utility model is as follows: the injection plate 3 can feed glue into the molding cavity through the multi-point pouring assembly 5, which can improve the glue feeding efficiency. The spiral feeding assembly 4 at the feed port 23 can prevent the flow velocity in the side wall and the middle of the flow channel from being inconsistent, which leads to uneven temperature. After the product is injection molded, when the mold is opened, the side core pulling mechanism 6 can automatically pull the core;

[0035] After the injection molding liquid enters the injection pipe body 7 through the inlet gate, it can enter the glue liquid diversion flow channel in the injection molding plate 3 through the spiral injection molding connector 8. The spiral injection molding connector 8 can prevent the flow rate on the side wall and the middle of the flow channel from being inconsistent, which leads to uneven temperature. The injection molding liquid in the injection pipe body 7 can enter the spiral feeding groove 11 on the side wall of the spiral feeding head 10 through the injection hole and enter the glue liquid diversion flow channel through the spiral feeding groove. The injection molding liquid in the glue liquid diversion flow channel in the injection molding plate can be diverted to the branch flow channel through the glue liquid diversion flow channel, and then enter the injection molding pipe through the branch flow channel and finally injected into the molding cavity through the injection molding pipe.

[0036] When the mold is opened, the upper template moves upward to drive the driving rod to move upward, and the upward movement of the driving rod can drive the core-pulling slider 14 to move horizontally away from the molding cavity, thereby realizing automatic core pulling of the side insert. After the product is injection molded, the four lifting cylinders act synchronously to drive the top plate to move vertically upward. The vertical upward movement of the top plate can apply a vertical upward thrust to the product through the straight ejector rod and the straight ejector block, thereby ejecting the product from the lower template.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0038] Although this article uses the upper template 1, lower template 2, injection plate 3, spiral feeding assembly 4, multi-point pouring assembly 5, side core pulling mechanism 6, pouring pipe body 7, spiral pouring connector 8, blocking head 9, spiral feeding head 10, spiral feeding trough 11, injection hole 12, injection tube 13, core pulling slider 14, side insert 15, drive rod 16, ejection mechanism 17, bottom plate 18, top plate 19, lifting cylinder 20, straight ejector rod 21, straight ejector block 22, feed port 23, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restriction is contrary to the spirit of the present invention.

Claims

1. A spiral hot runner pouring mechanism for an injection mold of an automobile interior trim panel, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A molding cavity is provided between the upper mold plate (1) and the lower mold plate (2), an injection molding plate (3) is provided on the upper side of the upper mold plate (1), a spiral feeding assembly (4) is provided at the feeding port (23) of the injection molding plate (3), a multi-point pouring assembly (5) is also provided on the injection molding plate (3), and a side core pulling mechanism (6) connected to the molding cavity is also provided on the side of the lower mold plate (2).

2. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: The spiral feeding assembly (4) includes a pouring pipe body (7) arranged on the top of the injection molding plate (3), and a spiral pouring connector (8) is provided at the bottom of the pouring pipe body (7). The spiral pouring connector (8) is connected to the glue diversion channel in the injection molding plate (3).

3. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 2, characterized in that: The spiral pouring connection part (8) includes a plugging head (9) and a spiral feeding head (10) arranged on the periphery of the plugging head (9), the plugging head (9) is sealed at the bottom of the pouring pipe body (7), and the spiral feeding head (10) is provided with a plurality of spiral feeding grooves (11) connected to the pouring pipe body (7), and the spiral feeding grooves (11) are connected to the glue liquid diversion channel.

4. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 3, characterized in that: The bottom of the plugging head (9) is inserted into the glue liquid diversion channel and the bottom of the plugging head (9) is conical.

5. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 3, characterized in that: The bottom of the feed pipe body (7) is provided with a plurality of injection holes (12) corresponding to the spiral feed troughs (11) along the circumferential direction, and the two ends of the injection holes (12) are respectively connected to the feed pipe body (7) and the spiral feed trough (11).

6. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 3, characterized in that: A plurality of spiral feed grooves (11) arranged on the spiral feed head (10) are evenly spaced along the circumferential direction of the center line of the feed pipe body (7).

7. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 3, characterized in that: The multi-point pouring assembly (5) includes a plurality of injection tubes (13) vertically fixed to the bottom of the injection molding plate (3), the bottom of the injection molding tube (13) vertically passes through the upper mold plate (1) and is connected to the molding cavity, and the top of the injection molding tube (13) is connected to the branch flow channel of the glue diversion flow channel in the injection molding plate (3).

8. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: The side core pulling mechanism (6) includes a core pulling slider (14) slidably arranged on the lower template (2), the inner end of the core pulling slider (14) is fixedly connected to a side insert (15) inserted into the molding cavity, and a driving rod (16) is obliquely fixed to the bottom of the upper template (1), and the driving rod (16) is inserted into the core pulling slider (14) and slidably cooperates with the core pulling slider (14).

9. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: The lower side of the lower template (2) is also provided with an ejection mechanism (17).

10. The spiral hot runner pouring mechanism of the automobile interior trim injection mold according to claim 9, characterized in that: The ejection mechanism (17) includes a bottom plate (18) arranged on the lower side of the lower template (2), a top plate (19) is arranged between the bottom plate (18) and the lower template (2), and also includes four lifting cylinders (20), the lifting cylinders (20) are fixed to the top of the top plate (19) and the output shaft ends of the lifting cylinders (20) pass through the top plate (19) and are fixedly connected to the bottom plate (18), a plurality of straight ejector rods (21) are fixedly connected to the top of the straight ejector rods (21), and the tops of the straight ejector rods (21) are detachably connected to straight ejector blocks (22) by bolts, and the tops of the straight ejector blocks (22) are connected to the molding cavity.

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