Upper inverted buckle demolding mechanism of vehicle glass guide rail
Through the combined structure of the inclined top block, inverted mandrel and limiting parts, the problem of difficult to quickly separate the inverted grip on the vehicle glass guide rail is solved, and the effect of rapid mold release is achieved.
Patent Information
- Application Number
- CN202422107421.6
- 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
The upside down of the vehicle glass guide rails leads to a complex mold structure and difficult to quickly separate during the demolding process.
The combination structure of the inclined top block, the inverted mandrel and the limiting member is adopted. Through the cooperation of the guide bevel and the limiting member, the inverted mandrel slides on the guide bevel, and the elastic parts and the driver achieve rapid separation of the inverted mandrel is used.
It realizes rapid separation of vehicle glass guide rails inverted, simplifies the mold structure and improves mold release efficiency.
Smart Images
Figure CN223147671U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of demoulding of injection moulds, in particular to an upper 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 upper 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 an upper 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: an upper reverse buckle demoulding mechanism for a vehicle glass guide rail, comprising an upper die, a lower die and a lifter; the lifter comprises a slider, a reverse buckle core shaft and a limiting member, the slider has a guiding head capable of penetrating into the cavity of the lower die, the guiding head faces the end face of the upper die with a guiding inclined surface, and the guiding inclined surface gradually moves away from the upper die along the direction of penetrating into the cavity of the lower die, and the slider can abut against the upper die or the lower die;
[0005] The reverse buckle core shaft can penetrate into the cavity of the upper die, and the reverse buckle core shaft can only slide along the guiding inclined surface;
[0006] The limiting member is connected to the reverse buckle core shaft, and the limiting member can abut against the upper die or the lower die.
[0007] Further, the lifter further comprises an elastic member, the reverse buckle core shaft is embedded in the slider, the elastic member is arranged inside the slider, and the elastic member can apply a force in the sliding direction of the reverse buckle core shaft.
[0008] Further, the above upper reverse buckle demoulding mechanism for a vehicle glass guide rail further comprises a driver, and the slider is connected to the movable end of the driver.
[0009] Further, a first limiting step is arranged at the cavity inlet of the upper die, a second limiting step is arranged at the cavity inlet of the lower die, the limiting member can abut against the first limiting step or the second limiting step, and the slider can abut against the first limiting step or the second limiting step.
[0010] Further, a limiting arm is arranged on the reverse buckle core shaft, and the limiting arm can abut against the first limiting step.
[0011] The beneficial effects of the present utility model are as follows: During the injection molding process, a cavity for injecting a vehicle glass guide rail is formed by enclosing the upper mold, the lower mold, the guiding ejector pin, and the undercut core shaft. By using the upper mold or the lower mold to restrict the slider, it can be avoided that the guiding ejector pin penetrates too deeply into the cavity of the lower mold, and the undercut core shaft abuts against the upper mold or the lower mold through the limiting member to prevent the undercut core shaft from penetrating too deeply into the cavity of the upper mold, thereby ensuring the shape of the cavity formed by enclosing the vehicle glass guide rail. During the demolding process, first, the guiding ejector pin is withdrawn, and at the same time, a force towards the vehicle glass guide rail is applied to the undercut core shaft. Since the guiding ejector pin has a guiding inclined surface that gradually moves away from the upper mold along the direction of penetrating into the cavity of the lower mold, and the undercut core shaft can only slide along the guiding inclined surface, when the guiding ejector pin is withdrawn, the undercut core shaft will gradually move downward and approach the lower mold under the drive of the force and the limitation of the limiting member, so that the undercut core shaft is separated from the undercut on the vehicle glass guide rail. Then, the undercut core shaft can be withdrawn, and finally, the upper mold and the lower mold are separated to complete the demolding of the vehicle glass guide rail. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of a vehicle glass guide rail;
[0013] Figure 2 is a schematic cross-sectional structural diagram of an upper undercut demolding mechanism for a vehicle glass guide rail proposed by the present utility model;
[0014] Figure 3 is Figure 2 an enlarged view of part A of an upper undercut demolding mechanism for a vehicle glass guide rail;
[0015] Label Description:
[0016] 1. Upper mold; 11. First limiting step;
[0017] 2. Lower mold; 21. Second limiting step;
[0018] 3. Oblique ejector block; 31. Slider; 311. Guiding ejector pin; 3111. Guiding inclined surface; 32. Undercut core shaft; 321. Limiting arm; 33. Limiting member; 34. Elastic member;
[0019] 4. Driver;
[0020] 5. Vehicle glass guide rail; 51. Undercut. Detailed Embodiment
[0021] To describe in detail the technical content, achieved objectives, and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the drawings.
[0022] Please refer to Figure 2 and Figure 3As shown, the utility model is an upper undercut demoulding mechanism for a vehicle glass guide rail, comprising an upper mold 1, a lower mold 2 and an inclined ejector block 3; the inclined ejector block 3 comprises a slider 31, an undercut mandrel 32 and a stopper 33, the slider 31 has a guide plug 311 that can penetrate into the cavity of the lower mold 2, the end surface of the guide plug 311 facing the upper mold 1 is a guide slope 3111, and the guide slope 3111 gradually moves away from the upper mold 1 along the direction of penetrating into the cavity of the lower mold 2, and the slider 31 can abut against the upper mold 1 or the lower mold 2;
[0023] The undercut mandrel 32 can penetrate into the cavity of the upper mold 1, and the undercut mandrel 32 can only slide along the guiding inclined surface 3111;
[0024] The limiting member 33 is connected to the undercut mandrel 32 , and the limiting member 33 can abut against the upper die 1 or the lower die 2 .
[0025] Working principle: During the injection molding process, the upper mold 1, the lower mold 2, the guide pin 311 and the undercut mandrel 32 enclose a cavity for the injection-molded vehicle glass guide rail 5, and the upper mold 1 or the lower mold 2 restricts the slider 31 to prevent the guide pin 311 from going too deep into the cavity of the lower mold 2, and the undercut mandrel 32 abuts against the upper mold 1 or the lower mold 2 through the limiter 33 to prevent the undercut mandrel 32 from going too deep into the cavity of the upper mold 1, thereby ensuring that the cavity shape of the injection-molded vehicle glass guide rail 5 is enclosed.
[0026] During the demolding process, the guide pin 311 is first pulled out, and at the same time, a force is applied to the undercut mandrel 32 toward the vehicle glass guide rail 5. Since the guide pin 311 has a guide bevel 3111 that gradually moves away from the upper mold 1 along the direction of the cavity of the lower mold 2, and the undercut mandrel 32 can only slide along the guide bevel 3111, when the guide pin 311 is pulled out, the undercut mandrel 32 will gradually move downward toward the lower mold 2 under the drive of the force and the limit of the limit member 33, thereby separating the undercut mandrel 32 from the undercut on the vehicle glass guide rail, and then the undercut mandrel 32 can be pulled out, and finally the upper mold 1 is separated from the lower mold 2 to complete the demolding of the vehicle glass guide rail 5.
[0027] Please refer to Figure 3 As shown, further, the inclined ejector block 3 further includes an elastic member 34, the undercut mandrel 32 is embedded in the slider 31, the elastic member 34 is arranged in the slider 31, and the elastic member 34 can apply force toward the sliding direction of the undercut mandrel 32. Preferably, the elastic member 34 is a spring.
[0028] From the above description, it can be seen that the undercut mandrel 32 is embedded in the slider 31, and the elastic member 34 drives the undercut mandrel 32 away from the slider 31, which can not only ensure the separation of the undercut mandrel 32 and the undercut 51 during the demolding process, but also reduce the external power source used to drive the undercut mandrel 32.
[0029] Please refer to Figure 2 As shown, further, the above-mentioned upper undercut demoulding mechanism of the vehicle glass guide rail further includes a driver 4, and the slider 31 is connected to the movable end of the driver 4. The driver 4 is preferably a cylinder.
[0030] It can be known from the above description that the driver 4 is used to control the sliding of the slider 31 .
[0031] Please refer to Figure 3 As shown, further, the cavity entrance of the upper mold 1 is provided with a first limiting step 11, and the cavity entrance of the lower mold 2 is provided with a second limiting step 21, the limiting member 33 can abut against the first limiting step 11 or the second limiting step 21, and the slider 31 can abut against the first limiting step 11 or the second limiting step 21.
[0032] From the above description, it can be seen that the restriction of the slider 31 by the first limiting step 11 or the second limiting step 21 can prevent the guide head 311 from going too deep into the cavity of the lower mold 2, and the undercut core shaft 32 abuts against the first limiting step 11 or the second limiting step 21 through the limiting member 33 to prevent the undercut core shaft 32 from going too deep into the cavity of the upper mold 1, thereby ensuring the enclosure to form the cavity shape of the injection-molded vehicle glass guide rail 5.
[0033] Please refer to Figure 3 As shown, further, a limiting arm 321 is provided on the undercut mandrel 32 , and the limiting arm 321 can abut against the first limiting step 11 .
[0034] From the above description, it can be seen that when the inverted core shaft 32 enters the cavity of the upper mold 1, the limiting arm 321 cooperates with the first limiting step 11 to limit the position, thereby further preventing the inverted core shaft 32 from moving beyond the stroke, resulting in the inability to effectively enclose the cavity for the injection-molded vehicle glass guide rail 5.
[0035] Embodiment 1
[0036] Please refer to Figure 2 and Figure 3As shown, an upper undercut demoulding mechanism for a vehicle glass guide rail comprises an upper die 1, a lower die 2, an inclined ejector block 3 and a driver 4; a first limiting step 11 is provided at the inlet of the cavity of the upper die 1, and a second limiting step 21 is provided at the inlet of the cavity of the lower die 2; the inclined ejector block 3 comprises a slider 31, an undercut mandrel 32, a limiting member 33 and an elastic member 34, the slider 31 has a guide plug 311 which can penetrate into the cavity of the lower die 2, an end face of the guide plug 311 facing the upper die 1 is a guide slope 3111, and the guide slope 3111 gradually moves away from the upper die 1 along the direction of penetrating into the cavity of the lower die 2, The slider 31 can abut against the second limiting step 21; the undercut mandrel 32 can penetrate into the cavity of the upper mold 1, the undercut mandrel 32 is embedded in the slider 31, and the undercut mandrel 32 can only slide along the guide inclined surface 3111, and a limiting arm 321 is provided on the undercut mandrel 32, and the limiting arm 321 can abut against the first limiting step 11; the elastic member 34 is provided in the slider 31, and the elastic member 34 can apply force toward the sliding direction of the undercut mandrel 32; the limiting member 33 is connected to the undercut mandrel 32, and the limiting member 33 can abut against the second limiting step 21. The movable end of the driver 4 is connected to the slider 31.
[0037] Working principle: During the injection molding process, the upper mold 1 and the lower mold 2 are first molded together, and then the driver 4 drives the slider 31 to send the guide head 311 into the cavity of the lower mold 2, and the undercut mandrel 32 is sent into the cavity of the upper mold 1. In this process, the limit arm 321 on the inverted core shaft 32 will first abut against the first limit step 11, and the limit member 33 will abut against the second limit step 21, so that the inverted core shaft 32 cannot continue to penetrate into the cavity of the upper mold 1. Since the driver 4 is still continuously driving the slider 31 to send the guide pin 311 into the cavity of the lower mold 2, the shaft body of the inverted core shaft 32 will continuously enter the slider 31 to compress the elastic member 34 until the slider 31 abuts against the second limit step 21. At this time, the upper mold 1, the lower mold 2, the guide pin 311 and the inverted core shaft 32 form a cavity for the injection molding of the vehicle glass guide rail 5, and finally the material is injected to obtain the vehicle glass guide rail 5 with an inverted shape.
[0038] During the demoulding process, the driver 4 drives the slider 31 away. Since the elastic member 34 is compressed and exerts elastic force on the undercut mandrel 32, the guide pin 311 gradually disengages from the cavity of the lower mold 2. Under the elastic force of the elastic member 34 and the restricted advancement of the first limiting step 11 and the second limiting step 21, the undercut mandrel 32 gradually moves downward toward the lower mold 2, thereby separating the undercut mandrel 32 from the undercut 51 on the vehicle glass guide rail 5. As the driver 4 continuously drives the slider 31 away, the undercut mandrel 32 disengages from the cavity of the upper mold 1, and finally the upper mold 1 separates from the lower mold 2 to complete the demoulding of the vehicle glass guide rail 5.
[0039] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall similarly be included within the patent protection scope of the present utility model.
Claims
1. An upper undercut demoulding mechanism for a vehicle glass guide rail, characterized in that: It includes an upper mold, a lower mold and a lifter block; the lifter block includes a slider, an undercut core shaft and a limiting member. The slider has a guiding head that can penetrate into the cavity of the lower mold. One end surface of the guiding head facing the upper mold is a guiding inclined surface, and the guiding inclined surface gradually moves away from the upper mold along the direction of penetrating into the cavity of the lower mold. The slider can abut against the upper mold or the lower mold; The undercut core shaft can penetrate into the cavity of the upper mold, and the undercut core shaft can only slide along the guiding inclined surface; The limiting member is connected to the undercut core shaft, and the limiting member can abut against the upper mold or the lower mold.
2. The upper 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 slider, and the elastic member is arranged in the slider. The elastic member can apply a force in the sliding direction of the undercut core shaft.
3. The upper undercut demoulding mechanism of the vehicle glass guide rail according to claim 2, characterized in that: It further includes a driver, and the slider is connected to the movable end of the driver.
4. The upper undercut demoulding mechanism of the vehicle glass guide rail according to claim 1 or 2, characterized in that: A first limiting step is arranged at the cavity inlet of the upper mold, and a second limiting step is arranged at the cavity inlet of the lower mold. The limiting member can abut against the first limiting step or the second limiting step, and the slider can abut against the first limiting step or the second limiting step.
5. The upper undercut demoulding mechanism of the vehicle glass guide rail according to claim 4, characterized in that: A limiting arm is arranged on the undercut core shaft, and the limiting arm can abut against the first limiting step.