An integrated injection molding mold for automotive rear door sill trim panels

Abstract

This application discloses an integrated injection molding mold for an automotive rear sill trim panel, belonging to the field of injection molding technology. It includes a lower mold with a molding cavity at its top corresponding to the rear sill panel body, and device cavities A and B corresponding to a fixing plate inside the lower mold; an upper mold disposed on top of the lower mold, with a molding block A fixedly disposed at its bottom corresponding to the molding cavity; a core-pulling assembly A disposed inside the molding cavity; and a core-pulling assembly B disposed inside device cavity A, the core-pulling assembly B being used to cooperate with the core-pulling assembly A to perform a core-pulling operation on the fixing plate. This application effectively solves the problem in the prior art that the core-pulling structure of automotive rear sill trim panels with an inner fixing plate is relatively complex and has low integration.

Description

Technical Field

[0001] This application relates to the field of automotive injection mold technology, and more specifically, to an integrated injection mold for automotive rear door trim panels. Background Technology

[0002] The rear door sill trim is a decorative accessory installed below the door sill of a car's rear seats. It is usually made of plastic or composite materials and is mostly produced using injection molding, where molten material is injected into a mold to cool and solidify before subsequent processes such as painting are carried out.

[0003] In related technologies, for example, the patent with prior art publication number CN220741993U provides an integrated injection molding core-pulling structure for automotive rear door trim panels. This device uses a slider and a connecting rod. The first driving component drives the slider to move. Through the cooperation of the slider and the inclined rod, the slider and the side pull blocks move synchronously in different directions. When the mold opens, while the slider completes the core-pulling of the mounting surface, multiple side pull blocks complete the core-pulling of the undercut in a sliding direction different from that of the slider. The distance between the slider and the side pull blocks becomes relatively larger, so they do not interfere with each other.

[0004] While the existing technical solutions described above can achieve the core-pulling operation for the inverted part, for automotive rear door sill trim panels with inner retaining plates (for example, the automotive rear door sill assembly provided by the prior art patent with publication number CN211252786U), after the retaining plate is injection molded, the retaining plate needs to be pulled out of the mold first. The existing core-pulling structure is relatively complex and has low integration.

[0005] In view of this, we propose an integrated injection molding mold for automotive rear door sill trim panels. Utility Model Content

[0006] The purpose of this application is to provide an integrated injection molding mold for automotive rear door sill trim panels, which can effectively solve the problem in the prior art that the core-pulling structure of automotive rear door trim panels with inner fixed plates is relatively complex and has low integration.

[0007] This application provides an integrated injection molding mold for an automotive rear door sill trim panel, comprising:

[0008] The lower mold has a forming cavity at its top corresponding to the rear door sill plate body, and a device cavity A and a device cavity B are formed inside the lower mold corresponding to the fixing plate.

[0009] An upper mold is set on top of the lower mold, and a forming block A is fixedly set at the bottom of the upper mold corresponding to the forming cavity;

[0010] Core-pulling component A is located inside the molding cavity;

[0011] Core-pulling assembly B is located inside device cavity A. Core-pulling assembly B is used in conjunction with core-pulling assembly A to perform core-pulling operation on the fixing plate.

[0012] As an optional solution to the technical solution of this application, the core-pulling assembly A includes a molding block B. The outer side of the molding block B is provided with a card slot A and a card slot B corresponding to the card plate A and the card post B. A pull-back plate is slidably arranged on the inner side of the card slot A, and two pull-back pins are slidably arranged on the inner side of the card slot B.

[0013] As an optional solution of the technical solution in this application, the inner side of the molding block B is provided with a relief cavity, and the outer sides of the retraction plate and the retraction pin are both fixedly provided with sliders. The outer side of the slider is provided with a sliding groove, and the sliding groove is slidably disposed with the inner wall of the relief cavity. The sliding groove is driven by external force to slide inside the relief cavity.

[0014] As an optional solution to the technical solution of this application, a connecting block is fixedly provided on the outer side of the slide groove, and inclined grooves are provided on both sides of the connecting block. A sliding pin is slidably provided on the inner side of the inclined groove, and a connecting rod is fixedly provided on the outer side of the sliding pin. A connecting plate is fixedly provided on the outer side of the connecting rod, and the connecting plate is fixedly provided at the output end of the electric push rod A. The electric push rod A is fixedly provided inside the lower mold.

[0015] As an optional solution to the technical solution of this application, a spring is provided on the outer side of the molding block B, and one end of the spring is fixedly disposed inside the device cavity A.

[0016] As an optional solution to the technical solution of this application, the core-pulling assembly B includes a molding block C, which is fixedly disposed at the output end of the electric push rod B, and the electric push rod B is fixedly disposed inside the lower mold.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] (1) This application uses core-pulling component A and core-pulling component B. After the upper mold and lower mold cooperate to injection mold the car rear door trim panel, the core-pulling action is completed by core-pulling component A and core-pulling component B to demold the fixed plate part. Then, the car rear door trim panel is ejected as a whole by the ejection structure inside the lower mold. Therefore, it effectively solves the problem that the core-pulling structure of the car rear door trim panel with a fixed plate on the inside is relatively complicated and the integration is not high in the prior art.

[0019] (2) This application provides a slider on the outside of the retraction plate and the retraction pin. The slider slides through the inner wall of the slide groove and the clearance groove, which ensures the direction of movement of the retraction plate and the retraction pin. By setting a spring, the electric push rod A can first drive the retraction plate and the retraction pin to move to the inside of the clearance groove, and then drive the molding block B to separate from the fixed plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an integrated injection molding mold for a car rear door trim panel, as disclosed in a preferred embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the overall exploded structure of the integrated injection molding mold for the rear door sill trim panel of an automobile, as disclosed in a preferred embodiment of this application.

[0022] Figure 3 This is a schematic cross-sectional view of the lower mold in an integrated injection molding mold for a car rear door trim panel, as disclosed in a preferred embodiment of this application.

[0023] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;

[0024] Figure 5 This is a schematic diagram of the core-pulling component A in the integrated injection molding mold for the rear door sill trim panel of an automobile, as disclosed in a preferred embodiment of this application.

[0025] Figure 6 This is a schematic diagram of the slider structure in an integrated injection mold for a car rear door trim panel, as disclosed in a preferred embodiment of this application.

[0026] Figure 7 This is a schematic diagram of the core-pulling structure B in the integrated injection molding mold for the rear door trim panel of an automobile, as disclosed in a preferred embodiment of this application.

[0027] Explanation of the numbers in the diagram: 100, rear door sill plate body; 200, fixing plate; 201, clamping plate A; 202, clamping post B;

[0028] 1. Lower mold; 11. Molding cavity; 12. Device cavity A; 13. Device cavity B;

[0029] 2. Upper mold; 21. Molding block A;

[0030] 3. Core-pulling assembly A; 31. Molding block B; 311. Card slot A; 312. Card slot B; 313. Clearance cavity; 32. Retraction plate; 33. Retraction pin; 34. Slider; 341. Slide groove; 35. Connecting block; 351. Inclined groove; 36. Sliding pin; 37. Connecting rod; 38. Connecting plate; 39. Electric push rod A; 310. Spring;

[0031] 4. Core-pulling assembly B; 41. Molding block C; 42. Electric push rod B. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 This application discloses an integrated injection molding mold for a car rear door sill trim panel, including a lower mold 1. The top of the lower mold 1 has a molding cavity 11 corresponding to the rear door sill panel body 100. The interior of the lower mold 1 has a device cavity A12 and a device cavity B13 corresponding to the fixing plate 200. The top of the lower mold 1 is provided with an upper mold 2. The bottom of the upper mold 2 is fixedly provided with a molding block A21 corresponding to the molding cavity 11. The inner side of the molding cavity 11 is provided with a core-pulling assembly A3. The inner side of the device cavity A12 is provided with a core-pulling assembly B4. The core-pulling assembly B4 is used to cooperate with the core-pulling assembly A3 to perform a core-pulling operation on the fixing plate 200.

[0034] When the rear door sill trim panel of a car is integrally injection molded, the upper mold 2 descends under the drive of external force and cooperates with the molding block A21 through the molding cavity 11 to inject the rear door sill panel body 100. The fixing plate 200 is injected through the gap between the core-pulling assembly A3 and the core-pulling assembly B4. After the rear door sill trim panel is formed, the fixing plate 200 is pulled out by the core-pulling assembly A3 and the core-pulling assembly B4, so that the core-pulling assembly A3 and the core-pulling assembly B4 are retracted into the inner side of the device cavity A12 and the device cavity B13, and the fixing plate 200 is demolded. Then, the rear door sill panel body 100 and the fixing plate 200 are ejected by the ejection structure inside the lower mold 1. The ejection structure inside the lower mold 1 is existing technology and will not be described in detail here.

[0035] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The core-pulling assembly A3 includes a molding block B31. The outer side of the molding block B31 has a locking plate groove A311 and a locking plate groove B312 corresponding to the locking plate A201 and locking post B202. A retraction plate 32 is slidably disposed inside the locking plate groove A311, and two retraction pins 33 are slidably disposed inside the locking plate groove B312. A clearance cavity 313 is formed inside the molding block B31. A slider 34 is fixedly disposed on the outer side of both the retraction plate 32 and the retraction pins 33. A sliding groove 341 is formed on the outer side of the slider 34. The sliding groove 341 is slidably disposed with the inner wall of the clearance cavity 313. The sliding groove 341 is subject to external... Force drives the sliding inside the clearance cavity 313. A connecting block 35 is fixedly installed on the outer side of the slide groove 341. Inclined grooves 351 are opened on both sides of the connecting block 35. A sliding pin 36 is slidably installed inside the inclined groove 351. A connecting rod 37 is fixedly installed on the outer side of the sliding pin 36. A connecting plate 38 is fixedly installed on the outer side of the connecting rod 37. The connecting plate 38 is fixedly installed at the output end of the electric push rod A39. The electric push rod A39 is fixedly installed inside the lower mold 1. A spring 310 is installed on the outer side of the forming block B31. One end of the spring 310 is fixedly installed inside the device cavity A12.

[0036] When the fixed plate 200 is injection molded, the clamping plate A201 and the clamping post B202 are injection molded through the clamping plate groove A311 and the clamping plate groove B312. At this time, the retraction plate 32 and the retraction pin 33 are inside the clamping plate groove A311 and the clamping plate groove B312 respectively. After molding, the retraction plate 32 and the retraction pin 33 need to be retracted first in order to allow the clamping plate A201 and the clamping post B202 to be completely demolded.

[0037] The electric push rod A39 pulls the connecting plate 38 to move, which in turn pulls the connecting rod 37 to move, causing the sliding pin 36 to slide inside the inclined groove 351, thereby driving the connecting block 35 to move. The connecting block 35 then drives the slider 34 to move, which in turn drives the retraction pin 33 and the retraction plate 32 to move, causing the retraction pin 33 and the retraction plate 32 to retract to the inside of the clearance cavity 313. During this process, the forming block B31 is subjected to the elastic force of the spring 310 and will not move.

[0038] Subsequently, the output end of the electric push rod A39 continues to retract. With the cooperation of the sliding groove 341 and the inner wall of the clearance cavity 313, and the cooperation of the inclined groove 351 and the sliding pin 36, the pull-back pin 33 and the pull-back plate 32 can no longer move. This causes the electric push rod A39 to drive the molding block B31 to retract, so that the molding block B31 is separated from the clamping plate A201 and the clamping post B202, thus completing the demolding of the clamping plate A201 and the clamping post B202.

[0039] Reference Figure 3 , Figure 4 and Figure 7 The core-pulling assembly B4 includes a molding block C41, which is fixedly disposed at the output end of the electric push rod B42, which is fixedly disposed inside the lower mold 1.

[0040] The molding block C41 is moved by the electric push rod B42, so that the fixed plate 200 is demolded away from the side of the core-pulling assembly A3, which facilitates the subsequent ejection of the rear sill plate body 100 and the fixed plate 200.

[0041] In summary, when the integrated injection molding mold for the rear door sill trim panel disclosed in this application is used, the upper mold 2 descends under the drive of external force, and through the molding cavity 11 and the molding block A21, it performs injection molding on the rear door sill panel body 100. Through the gap between the core-pulling assembly A3 and the core-pulling assembly B4, it performs injection molding on the fixing plate 200. Through the card slot A311 and the card slot B312, it performs injection molding on the card plate A201 and the card post B202.

[0042] After the rear door sill trim panel is formed, the core-pulling assembly A3 and core-pulling assembly B4 are used to pull the core of the fixed plate 200. The electric push rod A39 pulls the connecting plate 38, which in turn pulls the connecting rod 37, causing the sliding pin 36 to slide inside the inclined groove 351. This moves the connecting block 35, which in turn moves the slider 34, causing the retraction pin 33 and retraction plate 32 to move back to the inside of the clearance cavity 313. During this process, the forming block B31 is held still by the spring force of the spring 310. Then, the output end of the electric push rod A39 continues to retract, and the retraction pin 33 and retraction plate 32 retract into the groove 341 and the inner wall of the clearance cavity 313. With the cooperation of the inclined groove 351 and the sliding pin 36, it can no longer move, so that the electric push rod A39 drives the molding block B31 to retract, so that the molding block B31 separates from the clamping plate A201 and the clamping post B202, completing the demolding of the clamping plate A201 and the clamping post B202, so that the core pulling assembly A3 and the core pulling assembly B4 are retracted into the inner side of the device cavity A12 and the device cavity B13. The molding block C41 is driven to move by the electric push rod B42, so that the fixed plate 200 is demolded away from the side of the core pulling assembly A3, completing the partial demolding of the fixed plate 200. Then, the rear door panel body 100 and the fixed plate 200 are ejected by the ejection structure inside the lower mold 1, completing the one-piece injection molding of the automobile rear door trim panel.

Claims

1. An automobile rear door sill trim panel integrated injection molding mold characterized by, Include: The lower mold (1) has a forming cavity (11) on its top corresponding to the rear door sill plate body (100), and the lower mold (1) has a device cavity A (12) and a device cavity B (13) on its interior corresponding to the fixing plate (200). The upper mold (2) is set on top of the lower mold (1), and the bottom of the upper mold (2) is fixedly provided with a molding block A (21) corresponding to the molding cavity (11); The core-pulling assembly A (3) is located inside the molding cavity (11); The core-pulling assembly B (4) is located inside the device cavity A (12). The core-pulling assembly B (4) is used to cooperate with the core-pulling assembly A (3) to perform core-pulling operation on the fixing plate (200).

2. The integrated injection molding mold for the rear door sill trim panel of an automobile according to claim 1, characterized in that: The core-pulling assembly A (3) includes a molding block B (31). The outer side of the molding block B (31) is provided with a card slot A (311) and a card slot B (312) corresponding to the card plate A (201) and the card post B (202). A pull-back plate (32) is slidably arranged on the inner side of the card slot A (311), and two pull-back pins (33) are slidably arranged on the inner side of the card slot B (312).

3. The automobile rear door sill trim panel integrated injection molding mold according to claim 2, characterized in that: The inner side of the molding block B (31) is provided with a relief cavity (313). The outer sides of the retraction plate (32) and the retraction pin (33) are both fixedly provided with sliders (34). The outer side of the slider (34) is provided with a sliding groove (341). The sliding groove (341) is slidably disposed with the inner wall of the relief cavity (313). The sliding groove (341) is driven by external force to slide inside the relief cavity (313).

4. The automobile rear door sill trim panel integrated injection molding mold according to claim 3, characterized in that: A connecting block (35) is fixedly provided on the outer side of the slide groove (341). An inclined groove (351) is provided on both sides of the connecting block (35). A sliding pin (36) is slidably provided on the inner side of the inclined groove (351). A connecting rod (37) is fixedly provided on the outer side of the sliding pin (36). A connecting plate (38) is fixedly provided on the outer side of the connecting rod (37). The connecting plate (38) is fixedly provided at the output end of the electric push rod A (39). The electric push rod A (39) is fixedly provided inside the lower mold (1).

5. The automobile rear door sill trim panel integrated injection molding mold according to claim 4, characterized in that: A spring (310) is provided on the outside of the molding block B (31), and one end of the spring (310) is fixedly disposed inside the device cavity A (12).

6. The automobile rear door sill trim panel integrated injection molding mold according to claim 1, characterized in that: The core-pulling assembly B (4) includes a molding block C (41), which is fixedly disposed at the output end of an electric push rod B (42), and the electric push rod B (42) is fixedly disposed inside the lower mold (1).

Images