A toilet seat edge encapsulation injection mold

Abstract

The utility model relates to mould technical field especially is a kind of toilet ring cover edge rubber coating injection mould, including front mould seat, glue nozzle, shunt plate, front mould plate, front mould core, front cooling mechanism, rear mould seat, backing plate, rear mould plate, rear mould core, rear cooling mechanism, top plate, elastic guide assembly and multiple ejector pins, rear mould core is equipped with rear mould cavity and center block, and front mould core is equipped with annular profiling press block, and the connecting place of annular profiling press block and front mould core is equipped with edge forming groove, shunt plate is equipped with shunt channel, and multiple glue nozzles are evenly embedded on front mould plate and front mould core, and shunt channel is communicated with edge forming groove by multiple glue nozzles, and rear mould cavity is equipped with multiple embedded holes, and push block is slidably arranged in embedded hole, and push block is installed on top rod. The application realizes the edge of toilet ring cover to be rubber coated, before edge glue injection molding, toilet ring cover is pressed tightly by annular profiling press block, improve the position precision and stability of toilet ring cover, and the quality of rubber coating is good.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection mold for wrapping the edge of a toilet seat. Background Technology

[0002] Toilet seat covers, also known as toilet inner covers, are the covers used by users to sit on. In the production of toilet seat covers, they are generally manufactured using a one-piece injection molding process. Depending on the type of toilet, the structure of the toilet seat cover varies. Some toilet seat covers can be directly injection molded in one piece and then assembled after passing inspection. Existing patents, such as Chinese patent application number 201820101105.X, disclose a lower mold assembly for a one-piece injection molding of a toilet seat cover. However, some toilet seat covers require additional rubber coating on the outer edge. Therefore, there is an urgent need for an injection mold capable of secondary injection molding of toilet seat covers. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a toilet seat edge coating injection mold.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A toilet seat edge overmolding injection mold includes a front mold base, a nozzle embedded in the center of the front mold base, a manifold plate installed in the front mold base and communicating with the nozzle, a front template plate installed in the manifold plate, a front mold core embedded in the center of the rear side of the front template plate, a front cooling mechanism disposed on the front mold core, a rear mold base correspondingly disposed on the rear side of the front mold base, a pad plate installed in the rear mold base, a rear template plate installed in the pad plate, a rear mold core embedded in the rear template plate, a rear cooling mechanism disposed on the rear mold core, a top plate located within the pad plate and movably disposed between the rear mold base and the rear template plate, and an elastic guide component disposed between the rear template plate and the rear mold base. Multiple ejector pins are installed on the top plate and slide through the rear mold plate. The rear mold core has a rear mold cavity and a center block located in the middle of the bottom wall of the rear mold cavity. The front mold core has a protruding annular contouring block in the middle. The connection between the annular contouring block and the front mold core is provided with an edge forming groove surrounding the annular contouring block. The flow divider plate is provided with a flow channel. Multiple glue outlets are evenly embedded on the front mold plate and the front mold core. The glue inlet end of the multiple glue outlets is connected to the flow channel, and the glue outlet end of the multiple glue outlets is connected to the edge forming groove. The bottom wall of the rear mold cavity has multiple embedding holes. Push blocks are slidably installed in the embedding holes and are mounted on the ejector pin.

[0006] Furthermore, the front mold core is fitted with multiple central pressure blocks, which are located within the annular contour pressure blocks.

[0007] Furthermore, the front mold plate is equipped with a front mold closing positioning block on its side wall, and the rear mold plate is equipped with a rear mold closing positioning block on its side wall, with the front mold closing positioning block and the rear mold closing positioning block being concave and convex respectively.

[0008] Furthermore, both the front cooling mechanism and the rear cooling mechanism include cooling channels, with the cooling channels of the front cooling mechanism located inside the front mold core and the cooling channels of the rear cooling mechanism located inside the rear mold core.

[0009] Furthermore, the front template is fitted with a guide sleeve, and the pad is equipped with a guide rod that slides through the rear template and engages with the guide sleeve.

[0010] Furthermore, the elastic guide assembly includes a guide post installed between the top plate and the rear template, and a spring sleeved on the guide post, with the two ends of the spring elastically contacting the rear template and the top plate, respectively.

[0011] Furthermore, the rear mold base has a drive hole, and the top plate is exposed through the drive hole.

[0012] Furthermore, the top plate is equipped with limiting posts, which are used to abut against the rear formwork.

[0013] The beneficial effects of this utility model are as follows: In practical applications, this injection mold is installed on an injection molding machine. The injection molding machine drives the mold to open and close and injects molten rubber into the nozzle. During production, the injection molding machine first drives the mold to open, opening the front mold base and the lower mold base, and the front mold core and the rear mold core. At this time, the toilet seat is placed in the rear mold cavity of the rear mold core, so that the toilet seat is fitted outside the center block. Then, the injection molding machine drives the mold to close, closing the front mold base and the rear mold base, and the front mold core and the rear mold core. The annular contouring block presses the toilet seat tightly into the rear mold cavity, and an edge forming cavity is formed between the edge end face of the toilet seat, the inner wall of the rear mold cavity, the annular contouring block, and the edge forming groove. The injection molding machine supplies molten rubber into the manifold channel of the manifold through the nozzle. The material is distributed to each nozzle via a manifold. The nozzles inject the material into the edge molding cavity to form an edge-sealing compound on the edge of the toilet seat. During this process, the front and rear cooling mechanisms are activated to cool the front and rear mold cores respectively, which facilitates the solidification of the material in the edge molding cavity. Finally, the injection molding machine drives the mold to open, causing the front and rear mold bases to open, and the front and rear mold cores to open. The toilet seat with edge-sealing compound will remain in the rear mold cavity of the rear mold core. At this time, the injection molding machine drives the top plate to move closer to the front mold plate and compress the elastic guide component, causing the top plate to move the ejector pin and push block. The push block pushes the toilet seat with edge-sealing compound out of the rear mold cavity of the rear mold core, thus achieving demolding of the toilet seat with edge-sealing compound. This invention enables the application of adhesive to the edges of toilet seat covers. Before the adhesive is injection molded, a ring-shaped molding block is used to press the toilet seat cover firmly, which improves the positional accuracy and stability of the toilet seat cover, thereby improving the quality of the adhesive applied during the injection molding of the toilet seat cover's edges. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention after concealing the front and rear templates.

[0016] Figure 3 This is a three-dimensional structural diagram of the toilet seat cover, rear mold base, pad, top plate, ejector pin, elastic guide component, limiting post and push block of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the front mold core of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the rear mold core of this utility model.

[0019] Figure 6This is a three-dimensional structural diagram of the front mold base, the flow divider plate, and the dispensing nozzle of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Front mold base; 2. Inlet nozzle; 3. Manifold; 4. Front mold plate; 5. Front mold core; 6. Front cooling mechanism; 7. Rear mold base; 8. Rear cooling mechanism; 9. Top plate; 10. Elastic guide assembly; 11. Ejector pin; 12. Rear mold cavity; 13. Center block; 14. Annular contouring block; 15. Edge forming groove; 16. Outlet nozzle; 17. Embedded hole; 18. Push block; 19. Central pressure block; 20. Front mold closing positioning block; 21. Rear mold closing positioning block; 22. Guide sleeve; 23. Guide rod; 24. Guide pillar; 25. Spring; 27. Limiting pillar; 28. Toilet seat cover; 29. ​​Pad plate; 30. Rear mold plate; 31. Rear mold core. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] like Figures 1 to 6 As shown, this utility model provides a toilet seat edge overmolding injection mold, which includes a front mold base 1, a glue inlet 2 embedded in the middle of the front mold base 1, a flow divider plate 3 installed in the front mold base 1 and communicating with the glue inlet 2, a front template 4 installed in the flow divider plate 3, a front mold core 5 embedded in the middle of the rear side of the front template 4, a front cooling mechanism 6 disposed in the front mold core 5, a rear mold base 7 correspondingly disposed in the rear side of the front mold base 1, a pad 29 installed in the rear mold base 7, a rear template 30 installed in the pad 29, a rear mold core 31 embedded in the rear template 30, a rear cooling mechanism 8 disposed in the rear mold core 31, a top plate 9 located in the pad 29 and movably disposed between the rear mold base 7 and the rear template 30, and an elastic guide assembly disposed between the rear template 30 and the rear mold base 7. 10 and multiple ejector pins 11 installed on the top plate 9 and sliding through the rear mold plate 30. The rear mold core 31 is provided with a rear mold cavity 12 and a center block 13 located in the middle of the bottom wall of the rear mold cavity 12. The front mold core 5 is provided with a ring-shaped contouring block 14 protruding from the middle. The connection between the ring-shaped contouring block 14 and the front mold core 5 is provided with an edge forming groove 15 surrounding the ring-shaped contouring block 14. The flow divider 3 is provided with a flow divider channel. Multiple glue outlets 16 are evenly embedded on the front mold plate 4 and the front mold core 5. The glue inlet end of the multiple glue outlets 16 is connected to the flow divider channel, and the glue outlet end of the multiple glue outlets 16 is connected to the edge forming groove 15. Multiple embedding holes 17 are opened on the bottom wall of the rear mold cavity 12. Push blocks 18 are slidably arranged in the embedding holes 17 and are installed on the ejector pin.

[0024] In practical applications, this injection mold is installed on an injection molding machine. The injection molding machine drives the mold to open and close and injects molten rubber into the nozzle 2. During production, the injection molding machine first drives the mold to open, causing the front mold base 1 and the lower mold base to open, and the front mold core 5 and the rear mold core 31 to open. At this time, the toilet seat 28 is placed in the rear mold cavity 12 of the rear mold core 31, so that the toilet seat 28 is fitted over the center block 13. Then the injection molding machine drives the mold to open. When the injection mold closes, the front mold base 1 and the rear mold base 7 close, and the front mold core 5 and the rear mold core 31 close. The annular contouring block 14 presses the toilet seat 28 tightly into the rear mold cavity 12, and an edge forming cavity is formed between the outer edge of the toilet seat 28, the inner wall of the rear mold cavity 12, the annular contouring block 14, and the edge forming groove 15. The injection molding machine supplies molten rubber to the flow channel of the flow divider plate 3 through the injection nozzle 2. The molten rubber is then diverted through the flow channel to... In each of the dispensing nozzles 16, the dispensing nozzle 16 injects the rubber material into the edge molding cavity to injection mold the edge of the toilet seat cover 28. During this process, the front cooling mechanism 6 and the rear cooling mechanism 8 are activated to cool the front mold core 5 and the rear mold core 31 respectively, which is conducive to the solidification and molding of the rubber material in the edge molding cavity. Finally, the injection molding machine drives the injection mold to open, so that the front mold base 1 and the rear mold base 7 open, and the front mold core 5 and the rear mold core 31 open. The toilet seat cover 28 with edge molding will be retained in the rear mold cavity 12 of the rear mold core 31. At this time, the injection molding machine drives the top plate 9 to move closer to the front mold plate 4 and compress the elastic guide component 10, so that the top plate 9 drives the ejector pin 11 and the push block 18 to move, so that the push block 18 pushes the toilet seat cover 28 with edge molding in the rear mold cavity 12 of the rear mold core 31 away from the rear mold cavity 12, so as to realize the demolding of the toilet seat cover 28 with edge molding. This invention enables the edge of the toilet seat 28 to be coated with adhesive. Before the edge coating is injection molded, the toilet seat 28 is pressed tightly by the annular contouring block 14, which improves the positional accuracy and stability of the toilet seat 28, thereby improving the quality of the edge coating produced by injection molding of the toilet seat 28.

[0025] In this embodiment, a plurality of central pressing blocks 19 are embedded in the center of the front mold core 5, and the plurality of central pressing blocks 19 are located within the annular contour pressing block 14. After the front mold core 5 and the rear mold core 31 are molded together, not only does the annular contour pressing block 14 press the toilet seat 28 tightly within the rear mold cavity 12, but the plurality of central pressing blocks 19 also press the inner edge of the toilet seat 28, so that the toilet seat 28 is subjected to uniform force, further improving the positional accuracy and stability of the toilet seat 28.

[0026] In this embodiment, the front mold template 4 is equipped with a front mold closing positioning block 20 on its side wall, and the rear mold template 30 is equipped with a rear mold closing positioning block 21 on its side wall. The front mold closing positioning block 20 and the rear mold closing positioning block 21 are fitted together. During mold closing, the front mold closing positioning block 20 and the rear mold closing positioning block 21 fit together to improve the accuracy and stability of mold closing.

[0027] In this embodiment, both the front cooling mechanism 6 and the rear cooling mechanism 8 include cooling channels. The cooling channel of the front cooling mechanism 6 is located inside the front mold core 5, and the cooling channel of the rear cooling mechanism 8 is located inside the rear mold core 31. Coolant or cold air is introduced into the cooling channels to achieve the function of cooling and reducing temperature.

[0028] In this embodiment, the front template 4 is fitted with a guide sleeve 22, and the pad 29 is equipped with a guide rod 23 that penetrates the rear template 30 and slides in cooperation with the guide sleeve 22. During mold opening and closing, the guide sleeve 22 and the guide rod 23 slide in cooperation to improve the stability and positional accuracy of mold opening and closing.

[0029] In this embodiment, the elastic guide component 10 includes a guide post 24 installed between the top plate 9 and the rear template 30 and a spring 25 sleeved on the guide post 24. The two ends of the spring 25 elastically abut against the rear template 30 and the top plate 9 respectively. The rear mold base 7 has a drive hole, and the top plate 9 is exposed in the drive hole. When the mold is opened, the elastic force of the spring 25 drives the top plate 9 to abut against the inner side of the rear mold base 7, and the push block 18 is located in the recess 17. When it is necessary to push the toilet seat 28 out of the rear mold cavity 12, the push rod of the injection molding machine pushes the top plate 9 through the drive hole, so that the top plate 9 moves closer to the rear mold plate 30 and compresses the spring 25, so that the ejector pin 11 drives the push block 18 to push the toilet seat 28 out of the rear mold cavity 12 along the recess 17. When the pushing force of the push rod of the injection molding machine is released, the rebound force of the spring 25 causes the top plate 9 to move away from the rear mold plate 30 until the top plate 9 abuts against the inner side of the rear mold base 7, so as to realize the automatic reset of the top plate 9.

[0030] In this embodiment, the top plate 9 is equipped with a limiting post 27, which is used to abut against the rear template 30. During the process of the ejector pin 11 driving the push block 18 to push the toilet seat 28 out of the rear mold cavity 12, when the limiting post 27 abuts against the rear template 30, the limiting post 27 restricts the top plate 9 from continuing to move closer to the rear template 30, so as to limit the movement of the top plate 9, ejector pin 11 and push block 18, and avoid excessive compression of the spring 25, which would cause the spring 25 to be easily damaged or fail.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A toilet seat edge overmolding injection mold, characterized in that: The system includes a front mold base (1), a glue inlet (2) embedded in the middle of the front mold base (1), a flow divider plate (3) installed on the front mold base (1) and connected to the glue inlet (2), a front template plate (4) installed on the flow divider plate (3), a front mold core (5) embedded in the middle of the rear side of the front template plate (4), a front cooling mechanism (6) provided on the front mold core (5), a rear mold base (7) correspondingly provided on the rear side of the front mold base (1), a pad plate (29) installed on the rear mold base (7), a rear template plate (30) installed on the pad plate (29), a rear mold core (31) embedded in the rear template plate (30), a rear cooling mechanism (8) provided on the rear mold core (31), a top plate (9) located in the pad plate (29) and movable between the rear mold base (7) and the rear template plate (30), an elastic guide component (10) provided between the rear template plate (30) and the rear mold base (7), and a top plate (9) installed on the top plate (29). 9) Multiple ejector pins (11) slide through the rear mold plate (30). The rear mold core (31) is provided with a rear mold cavity (12) and a center block (13) located in the middle of the bottom wall of the rear mold cavity (12). The front mold core (5) is provided with a ring-shaped shaping block (14) protruding from the middle. The ring-shaped shaping block (14) and the front mold core (5) are provided with an edge forming groove (15) surrounding the ring-shaped shaping block (14). The flow divider plate (3) A flow channel is provided. Multiple dispensing nozzles (16) are evenly embedded on the front mold plate (4) and the front mold core (5). The dispensing ends of the multiple dispensing nozzles (16) are connected to the flow channel respectively, and the dispensing ends of the multiple dispensing nozzles (16) are connected to the edge forming groove (15) respectively. Multiple embedding holes (17) are opened on the bottom wall of the rear mold cavity (12). Push blocks (18) are slidably arranged in the embedding holes (17) and the push blocks (18) are mounted on the ejector pin.

2. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The front mold core (5) has multiple central pressure blocks (19) embedded in its center, and the multiple central pressure blocks (19) are located inside the annular contour pressure block (14).

3. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The front template (4) is equipped with a front mold closing positioning block (20) on its side wall, and the rear template (30) is equipped with a rear mold closing positioning block (21) on its side wall. The front mold closing positioning block (20) and the rear mold closing positioning block (21) are matched in a concave-convex manner.

4. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: Both the front cooling mechanism (6) and the rear cooling mechanism (8) include cooling channels. The cooling channels of the front cooling mechanism (6) are located in the front mold core (5), and the cooling channels of the rear cooling mechanism (8) are located in the rear mold core (31).

5. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The front template (4) is fitted with a guide sleeve (22), and the pad (29) is fitted with a guide rod (23) that passes through the rear template (30) and slides with the guide sleeve (22).

6. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The elastic guide assembly (10) includes a guide post (24) installed between the top plate (9) and the rear template (30) and a spring (25) sleeved on the guide post (24). The two ends of the spring (25) elastically abut against the rear template (30) and the top plate (9) respectively.

7. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The rear mold base (7) has a drive hole, and the top plate (9) is exposed through the drive hole.

8. The toilet seat edge overmolding injection mold according to claim 1, characterized in that: The top plate (9) is equipped with a limiting post (27), which is used to abut against the rear template (30).

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