Lower inverted buckle demolding mechanism of vehicle glass guide rail
Through the combined structure of the inclined top block and the inverted mandrel, the automatic separation of inverted reversal is achieved by using the guide inclined surface and elastic parts, which solves the complex structure problem in the downward reversal molding process of vehicle glass guide rails, and achieves a fast and simplified mold release effect.
Patent Information
- Application Number
- CN202422107635.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-29
AI Technical Summary
During the demolding process of vehicle glass guide rails, the existing technology structure is complex and difficult to separate quickly.
The combined structure of the inclined top block and the inverted mandrel is adopted, and the inclined surface and elastic parts are used to achieve automatic separation of the inverted mandrel, and the drive controls the slider movement to ensure the smooth separation of the inclined mandrel and the inverted mandrel.
The rapid demolding of vehicle glass guide rails is achieved, the mold structure is simplified, the dependence on peripheral power sources is reduced, and the mold release efficiency is improved.
Smart Images
Figure CN223147672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of demoulding of injection moulds, in particular to a lower reverse buckle demoulding mechanism for a vehicle glass guide rail. Background Art
[0002] Vehicle glass guide rails are commonly used for window glass, sunroof glass, etc. to move in a specified direction on a vehicle. According to assembly requirements, some vehicle glass guide rails, as Figure 1 shown, have reverse buckles provided inside the guide rail, and the reverse buckles are formed at the lower die position of the injection mould. However, the existence of the reverse buckles makes it necessary to consider how to avoid the reverse buckles during the demoulding process, which in turn leads to a relatively complex demoulding structure of the mould. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a lower reverse buckle demoulding mechanism for a vehicle glass guide rail, which can quickly separate from the reverse buckle.
[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a lower reverse buckle demoulding mechanism for a vehicle glass guide rail, including an upper die, a lower die and a lifter; the lifter includes a slider and a reverse buckle core shaft, the slider has a guiding head that can penetrate into the cavity of the upper die, one end surface of the guiding head facing the lower die is a guiding inclined surface, and the guiding inclined surface gradually moves away from the lower die along the direction of penetrating into the cavity of the upper die;
[0005] The reverse buckle core shaft can penetrate into the cavity of the lower die, and the reverse buckle core shaft can only slide along the guiding inclined surface.
[0006] Further, the lifter further includes an elastic member, the reverse buckle core shaft is embedded on the slider, the elastic member is arranged inside the slider, and the elastic member can apply a force towards the sliding direction of the reverse buckle core shaft.
[0007] Further, the above-mentioned lower reverse buckle demoulding mechanism for a vehicle glass guide rail further includes a driver, and the slider is connected to the movable end of the driver.
[0008] Further, a limiting arm is arranged on the reverse buckle core shaft, and a first limiting step for abutting against the limiting arm is arranged at the cavity entrance of the lower die.
[0009] Further, a second limiting step for abutting against the slider is arranged at the cavity entrance of the upper die.
[0010] The beneficial effects of the present utility model are as follows: The cavity for injecting the vehicle glass guide rail is formed by enclosing the upper mold, the lower mold, and the inclined ejector block. During the demolding process, first, the guiding ejector head is withdrawn, and at the same time, a force towards the vehicle glass guide rail is applied to the undercut mandrel. Since the guiding ejector head has a guiding inclined surface that gradually moves away from the lower mold along the direction of penetrating into the cavity of the upper mold, and the undercut mandrel can only slide along the guiding inclined surface, when the guiding ejector head is withdrawn, the undercut mandrel will gradually move upward and approach the upper mold under the drive of the force, so that the undercut on the undercut mandrel is separated from the undercut on the vehicle glass guide rail. Then, the undercut mandrel can be withdrawn, and finally, the upper mold and the lower mold are separated to complete the demolding of the vehicle glass guide rail. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic structural diagram of a vehicle glass guide rail;
[0012] Figure 2 is a schematic cross-sectional structural diagram of a lower undercut demolding mechanism for a vehicle glass guide rail proposed by the present utility model;
[0013] Figure 3 is Figure 2 an enlarged view of part A of a lower undercut demolding mechanism for a vehicle glass guide rail;
[0014] Reference numeral description:
[0015] 1. Upper mold; 11. Second limiting step;
[0016] 2. Lower mold; 21. First limiting step;
[0017] 3. Inclined ejector block; 31. Slide block; 311. Guiding ejector head; 3111. Guiding inclined surface; 32. Undercut mandrel; 321. Limiting arm; 33. Elastic member;
[0018] 4. Driver;
[0019] 5. Vehicle glass guide rail; 51. Undercut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] To describe in detail the technical content, the achieved purpose, and the effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.
[0021] Please refer to Figure 2 and Figure 3 As shown, a lower undercut demolding mechanism for a vehicle glass guide rail of the present utility model includes an upper mold 1, a lower mold 2, and an inclined ejector block 3; the inclined ejector block 3 includes a slide block 31 and an undercut mandrel 32, the slide block 31 has a guiding ejector head 311 that can penetrate into the cavity of the upper mold 1, one end surface of the guiding ejector head 311 facing the lower mold 2 is a guiding inclined surface 3111, and the guiding inclined surface 3111 gradually moves away from the lower mold 2 along the direction of penetrating into the cavity of the upper mold 1;
[0022] The reverse core shaft 32 can penetrate into the cavity of the lower die 2, and the reverse core shaft 32 can only slide along the guiding inclined surface 3111.
[0023] Working principle: During the injection molding process, first, the upper die 1 and the lower die 2 are closed. Then, the angled ejector block 3 sends the guiding ejector head 311 into the cavity of the upper die 1, and sends the reverse core shaft 32 into the cavity of the lower die 2, thereby enclosing to form the cavity for injecting the vehicle glass guide rail 5.
[0024] During the demolding process, first, the guiding ejector head 311 is withdrawn, and at the same time, a force towards the vehicle glass guide rail 5 is applied to the reverse core shaft 32. Since the guiding ejector head 311 has a guiding inclined surface 3111 that gradually moves away from the lower die 2 along the direction of penetrating into the cavity of the upper die 1, and the reverse core shaft 32 can only slide along the guiding inclined surface 3111, when the guiding ejector head 311 is withdrawn, the reverse core shaft 32 will gradually move upward close to the upper die 1 under the drive of the force, so that the reverse core shaft 32 is separated from the reverse buckle 51 on the vehicle glass guide rail 5. Then, the reverse core shaft 32 can be withdrawn, and finally, the upper die 1 and the lower die 2 are separated to complete the demolding of the vehicle glass guide rail 5.
[0025] Please refer to Figure 3 As shown, further, the angled ejector block 3 further includes an elastic member 33. The reverse core shaft 32 is embedded in the slider 31. The elastic member 33 is arranged inside the slider 31, and the elastic member 33 can apply a force towards the sliding direction of the reverse core shaft 32. Preferably, the elastic member 33 is a spring.
[0026] As can be seen from the above description, embedding the reverse core shaft 32 in the slider 31 and driving the reverse core shaft 32 to move away from the slider 31 by the elastic member 33 can not only ensure the separation of the reverse core shaft 32 and the reverse buckle 51 during the demolding process, but also reduce the external power source for driving the reverse core shaft 32.
[0027] Please refer to Figure 2 As shown, further, the lower reverse buckle demolding mechanism of a vehicle glass guide rail further includes a driver 4. The slider 31 is connected to the movable end of the driver 4. Among them, the driver 4 preferably uses a cylinder.
[0028] As can be seen from the above description, the driver 4 is used to control the sliding of the slider 31.
[0029] Please refer to Figure 3 As shown, further, a limiting arm 321 is arranged on the reverse core shaft 32, and a first limiting step 21 that abuts against the limiting arm 321 is arranged at the cavity entrance of the lower die 2.
[0030] As can be seen from the above description, during the process of the reverse core shaft 32 entering the cavity of the lower die 2, the limiting arm 321 is used to cooperate with the first limiting step 21 for limiting, preventing the reverse core shaft 32 from moving beyond the stroke, resulting in the inability to effectively enclose and form the cavity of the injection-molded vehicle glass guide rail 5.
[0031] Please refer to Figure 3 As shown, further, a second limiting step 11 that abuts against the slide block 31 is provided at the cavity inlet of the upper die 1.
[0032] As can be seen from the above description, during the process of the slide block 31 feeding the guiding head into the cavity of the upper die 1, the second limiting step 11 abuts against the slide block 31 to prevent the slide block 31 from moving beyond the stroke, resulting in the inability to effectively enclose and form the cavity of the injection-molded vehicle glass guide rail 5.
[0033] Preferably, during the process of the slide block 31 feeding the guiding head into the cavity of the upper die 1, the first limiting step 21 can also be used to abut against the slide block 31 to prevent the slide block 31 from moving beyond the stroke.
[0034] Embodiment 1
[0035] Please refer to Figure 2 and Figure 3 As shown, a lower reverse demolding mechanism for a vehicle glass guide rail includes an upper die 1, a lower die 2, a lifter block 3 and a driver 4; the lifter block 3 includes a slide block 31, a reverse core shaft 32 and an elastic member 33. The slide block 31 has a guiding head 311 that can penetrate into the cavity of the upper die 1. One end face of the guiding head 311 facing the lower die 2 is a guiding inclined surface 3111, and the guiding inclined surface 3111 gradually moves away from the lower die 2 along the direction of penetrating into the cavity of the upper die 1. The reverse core shaft 32 can penetrate into the cavity of the lower die 2. The reverse core shaft 32 is embedded in the slide block 31, and the reverse core shaft 32 can only slide along the guiding inclined surface 3111. The elastic member 33 is arranged inside the slide block 31, and the elastic member 33 can apply a force in the sliding direction of the reverse core shaft 32. The movable end of the driver 4 is connected to the slide block 31. A limiting arm 321 is arranged on the reverse core shaft 32, and a first limiting step 21 that abuts against the limiting arm 321 is provided at the cavity inlet of the lower die 2. A second limiting step 11 that abuts against the slide block 31 is provided at the cavity inlet of the upper die 1.
[0036] Working principle: During the injection molding process, first, the upper mold 1 and the lower mold 2 are closed. Then, the driver 4 drives the slider 31 to send the guiding ejector pin 311 into the cavity of the upper mold 1, and the reverse core shaft 32 is sent into the cavity of the lower mold 2. And in this process, the limiting arm 321 on the reverse core shaft 32 will first abut against the first limiting step 21, making the reverse core shaft 32 unable to continue extending into the cavity of the lower mold 2. Since the driver 4 is still continuously driving the slider 31 to send the guiding ejector pin 311 into the cavity of the upper mold 1 at this time, the shaft body of the reverse core shaft 32 will continuously enter the slider 31 to compress the elastic member 33 until the slider 31 abuts against the second limiting step 11. At this time, the cavity for injecting the vehicle glass guide rail 5 is formed by enclosing the upper mold 1, the lower mold 2, the guiding ejector pin 311 and the reverse core shaft 32. Finally, the material is injected to obtain the vehicle glass guide rail 5 with a reverse buckle.
[0037] During the demolding process, the driver 4 drives the slider 31 to move away. Since the compressed elastic member 33 exerts an elastic force on the reverse core shaft 32, the guiding ejector pin 311 first gradually disengages from the cavity of the upper mold 1. And under the elastic force of the elastic member 33 and the restriction of the first limiting step 21 on the forward movement, the reverse core shaft 32 will gradually move upward and approach the upper mold 1, so that the reverse core shaft 32 is separated from the reverse buckle 51 on the vehicle glass guide rail 5. When the driver 4 continuously drives the slider 31 to move away, the reverse core shaft 32 will disengage from the cavity of the lower mold 2. Finally, the upper mold 1 and the lower mold 2 are separated to complete the demolding of the vehicle glass guide rail 5.
[0038] The above are only the embodiments of the present invention, and do not thus limit the patent scope of the present invention. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.
Claims
1. A lower undercut demoulding mechanism for a vehicle glass guide rail, characterized in that: It includes an upper die, a lower die and a lifter block; the lifter block includes a sliding block and an undercut core shaft. The sliding block has a guiding head that can penetrate into the cavity of the upper die. One end face of the guiding head facing the lower die is a guiding inclined surface, and the guiding inclined surface gradually moves away from the lower die along the direction of penetrating into the cavity of the upper die. The undercut core shaft can penetrate into the cavity of the lower die, and the undercut core shaft can only slide along the guiding inclined surface.
2. The lower undercut demoulding mechanism of the vehicle glass guide rail according to claim 1, characterized in that: The lifter block further includes an elastic member. The undercut core shaft is embedded in the sliding block, and the elastic member is arranged inside the sliding block. The elastic member can apply a force in the sliding direction of the undercut core shaft.
3. The lower undercut demoulding mechanism of the vehicle glass guide rail according to claim 2, characterized in that: It further includes a driver, and the sliding block is connected to the movable end of the driver.
4. The lower undercut demoulding mechanism of the vehicle glass guide rail according to claim 1 or 2, characterized in that: A limiting arm is arranged on the undercut core shaft, and a first limiting step for abutting against the limiting arm is arranged at the entrance of the cavity of the lower die.
5. The lower undercut demoulding mechanism of the vehicle glass guide rail according to claim 1, characterized in that: A second limiting step for abutting against the sliding block is arranged at the entrance of the cavity of the upper die.