Large-angle automobile radar support oil cylinder core-pulling tripping structure

Abstract

The utility model discloses a large-angle automobile radar support oil cylinder core-pulling tripping structure, which is characterized in that a large straight ejector is arranged in a mold, an oil cylinder is arranged at the bottom of the large straight ejector, a core-pulling structure is accommodated in a channel formed in the large straight ejector, and the core-pulling structure comprises a pulling core, a pulling core external sleeve piece and a pulling core connecting rod, a driving rod of the oil cylinder is connected with a core-pulling connecting rod in the large straight ejector, the periphery of the core-pulling connecting rod is sleeved with a core-pulling outer sleeve part, a cavity for containing a pulling core is formed in the top of the core-pulling outer sleeve part, the top of the core-pulling connecting rod is connected with the pulling core, a core-pulling limiting block is arranged at the bottom of the core-pulling outer sleeve part, and an ejection spring is arranged in an inner hole of the core-pulling limiting block. The loose core comprises a loose core body and a loose core inner insert, the loose core body and the loose core inner insert are matched to form a loose core inclined hole, a through slit is formed in the loose core body in the radial direction, the angle pin driving guide rail is arranged in the slit, and the angle pin penetrates into the loose core inclined hole upwards. The demolding device solves the problem that a large-angle radar support structure cannot be normally demolded.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a core-pulling and release structure of a cylinder of a large-angle automobile radar bracket. Background Art

[0002] With the development of the automobile industry, automobile bumpers, as an important safety device, not only have the function of protection, but also pursue lightweight. In order to achieve the purpose of lightweight, the front and rear bumpers of the car are made of plastic materials through mold injection molding. The automobile bumpers made of plastic have good strength, rigidity and decorativeness, and can play a buffering role in the event of a collision, protecting the front and rear bodies of the car.

[0003] The automotive radar bracket is an auxiliary device for the front / rear bumper, which increases the complexity of the automotive bumper. Its inner surface has structures such as curved surfaces and undercuts, which brings great complexity to the ejection device of the injection mold. In the prior art, the mold used for molding the automotive bumper is usually provided with a large straight ejector block and a large inclined ejector block structure on the molded injection molded product. The large straight ejector block is pushed and moves vertically upward by a vertically arranged straight ejector rod, and the large inclined ejector block is pushed upward by an obliquely arranged inclined ejector rod. In addition, the inclined ejector block has an inclined surface that can cooperate with the core. During the upward movement of the inclined ejector block as a whole, the top of the inclined ejector block moves to the right or left at the same time. The inner side of the bumper has an undercut, which causes the problem of difficulty in disengagement in the prior art. Especially for large-angle automotive radar brackets, the disengagement operation is a key step and a difficult technology. Utility Model Content

[0004] In view of the defects that the above-mentioned existing radar bracket release structure assembled on the bumper body cannot be released by a mechanical core-pulling type oblique pin structure when the demoulding direction has a large angle, the applicant provides a rationally structured large-angle automobile radar bracket cylinder core-pulling release structure, which adopts the cylinder core-pulling release structure to solve the demoulding problem of the large-angle radar bracket that cannot be released by a mechanical core-pulling type oblique pin structure.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A large-angle automobile radar bracket oil cylinder core-pulling release structure, a large straight top is provided in the mold, an oil cylinder is provided at the bottom of the large straight top, a core-pulling structure is accommodated in a channel opened inside the large straight top, including a core-pulling, a core-pulling outer sleeve and a core-pulling connecting rod, a driving rod of the oil cylinder is connected to the core-pulling connecting rod in the large straight top, a core-pulling outer sleeve is provided on the outer peripheral sleeve of the core-pulling connecting rod, a cavity for accommodating the core-pulling is provided on the top of the core-pulling outer sleeve, the top of the core-pulling connecting rod is connected to the core-pulling, a core-pulling limit block is provided at the bottom of the core-pulling outer sleeve, and the inner opening of the core-pulling limit block is An ejection spring is provided, and the ejection spring pushes the core pulling outer set upward when released. The core pulling comprises a core pulling body and a core pulling inner insert, and the two cooperate to form a core pulling inclined hole on the left and right for the corresponding inclined pin to penetrate. A through slit is opened radially along the left and right directions inside the core pulling body, and an inclined pin driving guide rail is arranged therein and fixed on the core pulling outer set at both ends. The inclined pin penetrates upward into the core pulling inclined hole, and the bottom end of the inclined pin cooperates with the inclined pin driving guide rail to slide left and right. During the mold opening process, the inclined pin driving guide rail drives the left and right inclined pins to move closer to each other to achieve disengagement.

[0007] As a further improvement of the above technical solution:

[0008] The driving rod of the oil cylinder is connected to the core-pulling connecting rod in the large straight top through a connecting rod fixing seat and a cylinder T-block. The driving rod of the oil cylinder is connected to the cylinder T-block upwards, and the cylinder T-block is connected to the connecting rod fixing seat upwards through fixing screws, and the core-pulling connecting rod is installed upwards on the connecting rod fixing seat.

[0009] The bottom of the core-pulling outer set is provided with a base outer edge, and a core-pulling limit block is provided at the base outer edge. The core-pulling limit block is installed on the large straight top through fixing screws, and the core-pulling limit block limits the core-pulling outer set.

[0010] The core-pulling limit block is a long block structure, which runs through the interior of the core-pulling outer set in the horizontal direction.

[0011] An ejection spring and a spring guide rod which cooperate with each other are arranged in the inner opening of the core pulling limit block, the ejection spring is sleeved on the spring guide rod, and one end of the spring guide rod is fixed inside the core pulling limit block.

[0012] The upper section of the core pulling body is vertically fixedly connected to the core pulling inner insert by fixing screws, and the core pulling inner insert is horizontally fixedly connected to the core pulling body by inner insert positioning pins.

[0013] The outer diameter of the upper section of the core pulling body is smaller than the outer diameter of the lower section of the core pulling body.

[0014] The oblique pin driving guide rail is a long strip guide rail, and a guide rail groove is opened along the length direction of the guide rail. The bottom end of the oblique pin is inserted into the guide rail groove and is limited by the guide rail groove, and slides left and right along the guide rail groove.

[0015] The oblique pin is provided with a protrusion protruding outward, which together with the core pulling body forms a barb structure of the injection molded product. During the mold opening process, the left and right oblique pins move closer to each other, so that the protrusion on the oblique pin leaves the barb structure formed by the injection molded product.

[0016] A cylinder base is provided on the cylinder. The cylinder base is an L-shaped structure with a vertical plate on the side. The vertical plate is provided with a cylinder stroke limit block, a limit switch bracket and a limit switch. The cylinder stroke limit block extends to one side of the core pulling and limits the bottom of the core pulling outer kit. The limit switch is arranged on the limit switch bracket and limits the stroke of the cylinder drive rod.

[0017] The beneficial effects of the utility model are as follows:

[0018] Before the mold is opened, the oil cylinder drives the core puller to retract. At this time, the core puller outer set and the inclined pin driving guide rail remain stationary. The inclined pin slides relatively inward on the inclined pin driving guide rail under the drive of the core puller retraction. The inclined pin disengages from the buckle position, and the core puller retracts to fit with the core puller outer set. At this time, the inclined pin stops sliding. After the oil cylinder continues to drive, the core puller and the core puller outer set retract at the same time, thereby causing the overall structure to continue to retreat, so that the structure and the injection molded product are completely disengaged. After the injection molded product is disengaged from the buckle position here, the injection molded product is ejected out of the large straight top structure through other ejector blocks, which is convenient for taking out the product.

[0019] The utility model solves the problem that a large-angle radar bracket structure cannot be demoulded normally. When a mechanical release structure cannot be used, this structure can effectively solve this problem and avoids the need to disassemble the injection molded product into two or more pieces due to structural problems, thereby reducing mold development costs and parts production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model.

[0021] Figure 2 The utility model is a cross-sectional view Figure 1 .

[0022] Figure 3 The utility model is a cross-sectional view Figure 2 .

[0023] Figure 4 This is a schematic diagram of the utility model when it is working Figure 1 .

[0024] Figure 5 This is a schematic diagram of the utility model when it is working Figure 2 .

[0025] Figure 6 This is a schematic diagram of the utility model when it is working Figure 3 .

[0026] Figure 7 It is a schematic diagram of the oblique pin driving guide rail of the utility model.

[0027] Figure 8 It is a schematic diagram of the injection molding product of the utility model.

[0028] Fig. 9 It is a three-dimensional diagram of the core pulling of the utility model.

[0029] Fig.10 This is a cross-sectional view of the core pulling of the utility model Figure 1 .

[0030] Fig.11 This is a cross-sectional view of the core pulling of the utility model Figure 2 .

[0031] In the figure: 1. core pulling; 2. core pulling outer kit; 3. core pulling limit block; 4. cylinder base positioning pin; 5. cylinder stroke limit block; 6. limit switch bracket; 7. limit switch; 8. cylinder base; 9. cylinder; 10. core pulling inner insert; 11. inner insert positioning pin; 12. ejector rod positioning pin; 13. core pulling connecting rod; 14. connecting rod fixing seat; 15. cylinder T-block; 16. oblique pin; 17. oblique pin drive guide rail; 18. ejector spring; 19. spring guide rod; 20. injection molded product. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0033] like Figures 1 to 11 As shown, the large-angle automobile radar bracket oil cylinder core-pulling release structure described in the utility model is provided with a large straight top in the mold, the top of the large straight top is the mold cavity, and the large straight top is in contact with the injection molded product 20. The bottom of the large straight top is provided with an oil cylinder 9, and a channel is opened inside the large straight top. A core-pulling structure is accommodated in the channel, including a core-pulling 1, a core-pulling outer set 2 and a core-pulling connecting rod 13. The driving rod of the oil cylinder 9 is connected to the oil cylinder T-block 15 upward, and the oil cylinder T-block 15 is connected to the connecting rod fixing seat 14 upward through fixing screws. The connecting rod fixing seat 14 is upwardly installed with the core-pulling connecting rod 13, and the core-pulling connecting rod 13 is fixedly connected to the connecting fixing seat through fixing screws. The driving rod of the oil cylinder 9 is connected to the core-pulling connecting rod 13 in the large straight top through the connecting rod fixing seat 14 and the oil cylinder T-block 15, which has a supporting effect on the core-pulling connecting rod 13 and drives the core-pulling connecting rod 13 to move.

[0034] The outer circumference of the core-pulling connecting rod 13 is provided with a core-pulling outer sleeve 2, the core-pulling outer sleeve 2 is hollow inside, and has a cavity for accommodating the core-pulling 1 at the top, and the top of the core-pulling connecting rod 13 is connected to the core-pulling 1 through a top rod positioning pin 12. The bottom of the core-pulling outer sleeve 2 is provided with a base outer edge, and a core-pulling limit block 3 is provided at the base outer edge. The core-pulling limit block 3 is installed on the large straight top by fixing screws, and the core-pulling limit block 3 limits the core-pulling outer sleeve 2. Preferably, the core-pulling limit block 3 is a long block structure, which runs through the interior of the core-pulling outer sleeve 2 horizontally.

[0035] The inner opening of the core-pulling limit block 3 is provided with an ejection spring 18 and a spring guide rod 19 that cooperate with each other. The ejection spring 18 is sleeved on the spring guide rod 19. One end of the spring guide rod 19 is fixed inside the core-pulling limit block 3. The ejection spring 18 has an elastic space for compression and reset. When reset, the ejection spring 18 can push the core-pulling outer sleeve 2 upward to separate the core-pulling outer sleeve 2 from the core-pulling limit block 3.

[0036] The core pulling device 1 includes a core pulling body and a core pulling inner insert 10. The upper section of the core pulling body is vertically fixedly connected to the core pulling inner insert 10 by fixing screws, and the core pulling inner insert 10 is horizontally connected to the core pulling body by inner insert positioning pins 11. The outer diameter of the upper section of the core pulling body is smaller than the outer diameter of the lower section of the core pulling body. The core pulling inner insert 10 and the core pulling body cooperate to form a core pulling inclined hole on the left and right for the corresponding inclined pin 16 to penetrate. The lower section of the core pulling body is hollow inside, and a through slit is opened radially in the left and right directions.

[0037] The oblique pin driving guide rail 17 passes through the through slit in the left-right direction, and the two ends are fixed on the side wall of the core-pulling outer sleeve 2. Preferably, the two ends of the oblique pin driving guide rail 17 are embedded in the side wall openings of the core-pulling outer sleeve 2. The oblique pin driving guide rail 17 is used to install two upwardly inclined oblique pins 16. The oblique pin driving guide rail 17 is a long strip of guide rail, and the guide rail is provided with a guide rail groove along the length direction. The oblique pin 16 is installed in the guide rail groove. The bottom end of the oblique pin 16 cooperates with the guide rail groove. The bottom end of the oblique pin 16 is stuck in the guide rail groove and is limited by the guide rail groove, and slides left and right along the guide rail groove.

[0038] The oblique pin 16 penetrates upward into the core-pulling oblique hole between the core-pulling inner insert 10 and the core-pulling body, and contacts the injection molded product 20 at the upper part of the channel. A protrusion is provided on the oblique pin 16, and the protrusion and the core-pulling body together form a barb structure of the injection molded product 20. During the mold opening process, the left and right oblique pins 16 move closer to each other, so that the protrusion on the oblique pin 16 leaves the barb structure formed by the injection molded product 20, and the release operation is realized.

[0039] A cylinder base 8 is provided on the oil cylinder 9. The oil cylinder base 8 is an L-shaped structure and has a vertical plate at the side. The vertical plate is provided with an oil cylinder stroke limit block 5, a limit switch bracket 6 and a limit switch 7. The oil cylinder stroke limit block 5 extends to one side of the core pulling 1 and performs a limit interception on the bottom of the core pulling outer set 2. The limit switch 7 is provided on the limit switch bracket 6 and performs a limit control on the stroke of the drive rod of the oil cylinder 9. The oil cylinder base 8 is installed on the mold equipment through the oil cylinder base positioning pin 4.

[0040] When the utility model is implemented, the oil cylinder core pulling structure is used to solve the demoulding problem of the large-angle radar mounting hole. Before the mold is opened, the oil cylinder 9 drives the core pulling 1 to retract. At this time, the core pulling outer set 2 and the inclined pin driving guide rail 17 remain stationary. The inclined pin 16 slides relatively inward on the inclined pin driving guide rail 17 under the drive of the core pulling 1 to retract. The inclined pin 16 disengages from the buckle position, and the core pulling 1 retracts to fit with the core pulling outer set 2. At this time, the inclined pin 16 stops sliding. After the oil cylinder 9 continues to drive, the core pulling 1 and the core pulling outer set 2 retract at the same time, thereby causing the overall structure to continue to retreat, so that the structure and the injection molded product 20 are completely disengaged. After the injection molded product 20 is disengaged from the buckle position here, the injection molded product 20 is ejected from the large straight top structure through other ejector blocks, which is convenient for taking out the parts.

[0041] The above description is an explanation of the utility model, not a limitation of the utility model. The utility model can be modified in any form without violating the spirit of the utility model.

Claims

1. A large-angle automotive radar bracket oil cylinder core-pulling and release structure, characterized in that: A large straight top is provided in the mold, and an oil cylinder (9) is provided at the bottom of the large straight top. A core pulling structure is accommodated in a channel opened inside the large straight top, comprising a core pulling (1), a core pulling outer sleeve (2) and a core pulling connecting rod (13). The driving rod of the oil cylinder (9) is connected to the core pulling connecting rod (13) in the large straight top. The outer sleeve of the core pulling connecting rod (13) is provided with a core pulling outer sleeve (2). The top of the core pulling outer sleeve (2) has a cavity for accommodating the core pulling (1). The top of the core pulling connecting rod (13) is connected to the core pulling (1). The bottom of the core pulling outer sleeve (2) is provided with a core pulling limit block (3), and an ejection spring (18) is provided in the internal opening of the core pulling limit block (3). When the ejection spring (18) is released, the core pulling outer set (2) is ejected upward. The core pulling (1) includes a core pulling body and a core pulling inner insert (10), which cooperate to form a core pulling inclined hole on the left and right for the corresponding inclined pin (16) to penetrate. A through slit is opened radially along the left and right directions inside the core pulling body. An inclined pin driving guide rail (17) is arranged therein and fixed on the core pulling outer set (2) at both ends. The inclined pin (16) penetrates upward into the core pulling inclined hole. The bottom end of the inclined pin (16) cooperates with the inclined pin driving guide rail (17) to slide left and right. During the mold opening process, the inclined pin driving guide rail (17) drives the left and right inclined pins (16) to move closer to each other to achieve release.

2. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The driving rod of the oil cylinder (9) is connected to the core-pulling connecting rod (13) in the large straight top through a connecting rod fixing seat (14) and an oil cylinder T-shaped block (15); the driving rod of the oil cylinder (9) is connected to the oil cylinder T-shaped block (15) upwards; the oil cylinder T-shaped block (15) is connected to the connecting rod fixing seat (14) upwards through a fixing screw; and the core-pulling connecting rod (13) is installed upwards on the connecting rod fixing seat (14).

3. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The bottom of the core-pulling outer set (2) is provided with a base outer edge, and a core-pulling limit block (3) is provided at the base outer edge. The core-pulling limit block (3) is installed on the large straight top by fixing screws, and the core-pulling limit block (3) limits the core-pulling outer set (2).

4. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The core-pulling limiting block (3) is a long block structure and runs transversely through the interior of the core-pulling outer sleeve (2).

5. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: An ejection spring (18) and a spring guide rod (19) that cooperate with each other are arranged in the internal opening of the core-pulling limit block (3); the ejection spring (18) is sleeved on the spring guide rod (19); one end of the spring guide rod (19) is fixed inside the core-pulling limit block (3).

6. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The upper section of the core pulling body is vertically fixedly connected to the core pulling inner insert (10) via fixing screws, and the core pulling inner insert (10) is laterally fixedly connected to the core pulling body via inner insert positioning pins (11).

7. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The outer diameter of the upper section of the core pulling body is smaller than the outer diameter of the lower section of the core pulling body.

8. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The oblique pin driving guide rail (17) is a long strip guide rail, and a guide rail groove is provided along the length direction of the guide rail. The bottom end of the oblique pin (16) is inserted into the guide rail groove and is limited by the guide rail groove, and slides left and right along the guide rail groove.

9. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: The oblique pin (16) is provided with a protrusion protruding outwardly, and the protrusion and the core pulling body together form a barb structure of the injection molded product (20). During the mold opening process, the left and right oblique pins (16) move closer to each other, so that the protrusion on the oblique pin (16) leaves the barb structure formed by the injection molded product (20).

10. The large-angle automotive radar bracket oil cylinder core-pulling and release structure according to claim 1 is characterized in that: A cylinder base (8) is provided on the cylinder (9). The cylinder base (8) is an L-shaped structure and has a vertical plate at the side. The vertical plate is provided with a cylinder stroke limit block (5), a limit switch bracket (6) and a limit switch (7). The cylinder stroke limit block (5) extends toward one side of the core pulling (1) and performs a limit interception on the bottom of the core pulling outer sleeve (2). The limit switch (7) is arranged on the limit switch bracket (6) and performs a limit control on the stroke of the drive rod of the cylinder (9).

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