A semi-automatic mold opening and closing mechanism for automotive rubber strips
By introducing left and right guide components and front and rear guide components into the automotive rubber strip molding die, the problem of template alignment caused by hydraulic cylinder wear was solved, achieving higher molding accuracy and quality, and extending the service life of the die.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YUELIAN RUBBER & PLASTIC PROD CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing automotive rubber strip molding mold, the upper and lower mold plates are difficult to align completely during the mold closing process due to wear of the hydraulic cylinder, which affects the molding accuracy and quality, and the increased friction reduces the accuracy of mold closing.
A semi-automatic mold opening and closing mechanism for automotive rubber strips was designed, including left and right guide components and front and rear guide components. Through structures such as limit plates and ball bearings, the upper and lower mold plates are ensured to be precisely aligned in multiple directions, reducing friction and wear.
It improves the molding precision and quality of automotive rubber strips, extends the service life of molds, and enhances the reliability and durability of mold opening and closing mechanisms.
Smart Images
Figure CN224275889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive rubber strip molding technology, and in particular to a semi-automatic mold opening and closing mechanism for automotive rubber strips. Background Technology
[0002] Automotive sealing strips are one of the important components of automobiles, widely used in doors, windows, body, seats, and sunroofs, playing an important role in waterproofing, sealing, sound insulation, dustproofing, antifreeze, shock absorption, heat preservation, and energy saving.
[0003] The automotive sealing strip is manufactured using a mold forming process. The raw material is placed into the mold cavity, and then the upper and lower mold plates are closed under the push of a hydraulic cylinder, providing the required pressure so that the raw material is quickly formed in the mold cavity. Then, the upper mold plate is moved upward by the hydraulic cylinder to open the mold cavity, and then the workers can take out the formed automotive sealing strip.
[0004] During the mold closing process, if the upper mold plate is moved downward and closed with the lower mold plate by hydraulic cylinders in conjunction with guide pillars and guide holes to complete the mold closing operation, the hydraulic cylinders will wear down during long-term use. This will cause slight wobbling when the hydraulic cylinders push the upper mold plate downward, making it difficult for the upper and lower mold plates to be completely aligned when the mold is closed. As a result, the dimensional accuracy and quality of the automotive sealing strip after it is formed in the mold cavity will decrease. Moreover, the friction between the guide pillars and guide holes will increase, further reducing the accuracy of subsequent mold closing.
[0005] To solve the above problems, there is an urgent need for a semi-automatic mold opening and closing mechanism for automotive rubber strips. Utility Model Content
[0006] The purpose of this utility model is to provide a semi-automatic mold opening and closing mechanism for automotive rubber strips, in order to solve the problem mentioned in the background art that, during the mold closing process of existing automotive rubber strip molding molds, the hydraulic cylinder will wear out during long-term use, resulting in slight oscillation when the hydraulic cylinder pushes the upper mold plate downward, which makes it difficult for the upper and lower mold plates to be completely aligned when closing the mold.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a semi-automatic opening and closing mold mechanism for automotive rubber strips, comprising a fixed plate and a lower template, wherein an upper template is fixedly connected to the bottom of the fixed plate, and the lower template is provided with left and right guide components and front and rear guide components;
[0008] The left and right guide components include two pairs of rectangular cavities symmetrically opened on the front and rear sides of the lower template. Two pairs of mounting blocks are symmetrically fixedly connected in the two pairs of rectangular cavities by bolts. The top surfaces of the two pairs of mounting blocks are symmetrically opened with two pairs of mounting cavities. Two first limiting plates are symmetrically connected in the mounting cavities. The upper half of the two first limiting plates is a symmetrical first inclined surface. The two first inclined surfaces are inverted V-shape. The left and right guide components also include two pairs of square rods symmetrically fixedly connected to the bottom of the upper template. The square rods can be inserted between the corresponding pair of first limiting plates. The left and right sides of the square rods are respectively in contact with the lower half of the side of the pair of first limiting plates that are close to each other.
[0009] The front and rear guide components are used to guide and limit the square rod in the front and rear directions.
[0010] Preferably, the front and rear guide assembly includes two pairs of limiting holes symmetrically opened on the bottom ends of two pairs of square rods. The front and rear guide assembly also includes two pairs of fixing rods symmetrically connected to the bottom walls of two pairs of mounting cavities. Two second limiting plates are symmetrically connected to the front and rear sides of the fixing rods. The upper half of the two second limiting plates is a symmetrical second inclined surface, and the two second inclined surfaces are inverted V-shapes. The four pairs of second limiting plates are respectively inserted into the two pairs of limiting holes. The front and rear inner sidewalls of the limiting holes can respectively fit against the lower half of the front and rear sides of a pair of second limiting plates. The advantage of this arrangement is that, through the cooperation of the two second limiting plates and the two second inclined surfaces, the square rods can pass through... When the limiting hole is fitted onto the two second limiting plates, it is guided and limited by the two second limiting plates, thereby ensuring that the upper and lower mold plates can be accurately aligned in the left and right directions when the mold is closed, thus ensuring the quality of the molded automotive rubber strip. At the same time, through the limiting effect of the two second inclined surfaces, a small amount of back-and-forth swaying is allowed during the downward movement of the square rod. This ensures that the second limiting plates guide and limit the square rod in the front and back directions, while avoiding large friction between the second limiting plates and the inner wall of the limiting hole, reducing the wear rate of the inner wall of the limiting hole and the outer side of the square rod, and improving the durability and reliability of the mold opening and closing structure.
[0011] Preferably, the left and right guide components further include two vertical plates symmetrically fixedly connected to the opposite sides of each pair of two first limiting plates. Two sets of circular holes are symmetrically opened on the opposite sides of each pair of two vertical plates. Two sets of first elastic members are symmetrically fixedly connected to the inner sidewalls of the two sets of circular holes that are close to each other. Two sets of circular rods are symmetrically fixedly connected to the opposite ends of the two sets of first elastic members. The two sets of circular rods are symmetrically movably inserted into the two sets of circular holes. The opposite ends of the two sets of circular rods are respectively fixedly connected to the left and right inner sidewalls of the mounting cavity. The left and right guide components further include two first... The three limiting plates are located directly below the two first limiting plates. Each pair of two second limiting plates is symmetrically connected to the front and rear sides of the fixed rod via a first rotating rod and a first torsion spring. The advantage of this arrangement is that the first limiting plates can move left and right, and the second limiting plates can swing back and forth, through the first elastic element and the first torsion spring. This further reduces the wear on the first limiting plates, the second limiting plates, the left and right sides of the square rod, and the inner wall of the limiting hole when the square rod moves downward with the upper template and comes into contact with the sides of the first and second limiting plates.
[0012] Preferably, the left and right guide components further include two sets of balls symmetrically rotatably connected to the left and right sides of the square rod. The two sets of balls can respectively abut against the sides of the two first limiting plates that are close to each other. The advantage of this arrangement is that the rolling friction between the balls and the sides of the first limiting plates greatly reduces the wear on the sides of the first limiting plates and the left and right sides of the square rod, effectively improving the durability and reliability of the opening and closing mechanism.
[0013] Preferably, the left and right guide components further include two pairs of vertical grooves symmetrically formed on the adjacent sides of each pair of two first limiting plates. Two pairs of movable plates are symmetrically slidably connected between the front and rear inner sidewalls of the two pairs of vertical grooves. Two pairs of vertical holes are symmetrically formed at the bottom of the two pairs of movable plates. Two pairs of vertical rods are movably inserted into the two pairs of vertical holes. The bottom ends of the two pairs of vertical rods pass through the vertical holes and are fixedly connected to the inner bottom wall of the vertical groove. Two pairs of second elastic elements are symmetrically fixedly connected between the inner top wall of the two pairs of vertical holes and the top ends of the two pairs of vertical rods. Two contact plates are symmetrically fixedly connected between the adjacent sides of the two pairs of movable plates. The upper half of the two contact plates are two symmetrical third inclined surfaces, which are distributed in an inverted V-shape. The advantage of this arrangement is that when the ball and the side of the contact plate are rubbed and squeezed, the contact plate will overcome the elastic force of the second elastic elements and move downward. This can further reduce the friction between the ball and the side of the contact plate, and further reduce the wear of the side of the contact plate and the outer surface of the ball.
[0014] Preferably, the two pairs of fixed rods are symmetrically and movably inserted into the inner bottom walls of the two mounting cavities. A lifting assembly is connected to the lower template. The lifting assembly is used to lift the two pairs of fixed rods upward and insert them into the two pairs of limiting holes respectively. The advantage of this arrangement is that the fixed rods and the second limiting plate can be pulled out of the limiting holes downward before the mold is opened by the lifting assembly. This avoids the shaking that occurs when the hydraulic cylinder drives the upper template and square rod to move upward, which would increase the wear on the inner side wall of the limiting hole and the side of the second limiting plate. This greatly improves the durability and reliability of the opening and closing mechanism.
[0015] In summary, the technical effects and advantages of this utility model are as follows:
[0016] 1. In this utility model, the left and right guide components and the front and rear guide components can guide and limit the upper template in the front, rear and left and right directions when the mold is closed, so that the upper template and the lower template can be accurately closed. This can effectively improve the dimensional accuracy and quality of the automotive rubber strip after molding, and thus effectively improve the reliability and practicality of the opening and closing mechanism.
[0017] 2. In this utility model, by setting a vertical groove, a movable plate, a vertical rod, a second elastic element and a contact plate, when the ball and the side of the contact plate are rubbed and squeezed, the contact plate will overcome the elastic force of the second elastic element and move downward. This can further reduce the friction between the ball and the side of the contact plate, and further reduce the wear of the side of the contact plate and the outer surface of the ball. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a first structural schematic diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the second structure of the present invention;
[0021] Figure 3 This is a partial structural schematic diagram of the front and rear guide components in this utility model;
[0022] Figure 4 In this utility model Figure 1 Enlarged view of point A in the middle;
[0023] Figure 5 In this utility model Figure 2 Enlarged view of point B in the middle;
[0024] Figure 6 In this utility model Figure 4 Enlarged diagram of point C in the middle.
[0025] In the diagram: 1. Fixed plate; 2. Upper template; 3. Lower template; 4. Left and right guide components; 41. Mounting block; 42. Mounting cavity; 43. First limiting plate; 44. Square rod; 45. Vertical plate; 46. Round rod; 47. Third limiting plate; 48. Ball bearing; 49. Vertical groove; 410. Contact plate; 5. Front and rear guide components; 51. Limiting hole; 52. Fixed rod; 53. Second limiting plate; 6. Lifting component; 61. First guide hole; 62. Through cavity; 63. Lifting plate; 64. Third elastic element; 65. Long rod; 66. Rotating handle; 67. Magnetic block; 68. Cam. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please refer to Figures 1-6 The semi-automatic mold opening and closing mechanism for automotive rubber strips shown includes a fixed plate 1 and a lower template 3. The bottom of the fixed plate 1 is fixedly connected to the upper template 2. The lower template 3 is provided with left and right guide components 4 and front and rear guide components 5. The top of the fixed plate 1 is fixedly connected to the output end of the hydraulic cylinder.
[0028] The left and right guide components 4 include two pairs of rectangular cavities symmetrically opened on the front and rear sides of the lower template 3. Two pairs of mounting blocks 41 are symmetrically fixedly connected in the two pairs of rectangular cavities by bolts. Two pairs of mounting cavities 42 are symmetrically opened on the top surface of the two pairs of mounting blocks 41. Two first limiting plates 43 are symmetrically connected in the mounting cavities 42. The upper half of the two first limiting plates 43 is a symmetrical first inclined surface. The two first inclined surfaces are inverted V-shape. The left and right guide components 4 also include two pairs of square rods 44 symmetrically fixedly connected to the bottom of the upper template 2. The square rods 44 can be inserted between the corresponding pair of first limiting plates 43. The left and right sides of the square rods 44 are respectively in contact with the lower half of the side of the pair of first limiting plates 43 that are close to each other.
[0029] The front and rear guide components 5 are used to guide and limit the opposite rod 44 in the front and rear directions.
[0030] refer to Figure 3The front and rear guide assembly 5 includes two pairs of limiting holes 51 symmetrically opened on the bottom ends of two pairs of opposite rods 44. The front and rear guide assembly 5 also includes two pairs of fixing rods 52 symmetrically connected to the bottom walls of two pairs of mounting cavities 42. Two second limiting plates 53 are symmetrically connected to the front and rear sides of the fixing rods 52. The upper half of the two second limiting plates 53 is a symmetrical second inclined surface. The two second inclined surfaces are inverted V-shape. The four pairs of second limiting plates 53 are respectively inserted into the two pairs of limiting holes 51. The front and rear inner sidewalls of the limiting holes 51 can respectively fit with the lower half of the front and rear sidewalls of a pair of second limiting plates 53.
[0031] Specifically, by using two second limiting plates 53 in conjunction with two second inclined surfaces, when the square rod 44 is fitted onto the two second limiting plates 53 through the limiting hole 51, it will be guided and limited by the two second limiting plates 53. This ensures that the upper mold plate 2 and the lower mold plate 3 can be accurately aligned in the left and right directions when the mold is closed, thereby ensuring the quality and grade of the molded automotive rubber strip. At the same time, the limiting effect of the two second inclined surfaces allows the square rod 44 to make a small back-and-forth sway during its downward movement. This ensures that while the second limiting plates 53 guide and limit the square rod 44 in the front-and-back direction, it also avoids large friction between the second limiting plates 53 and the inner wall of the limiting hole 51, reduces the wear rate of the inner wall of the limiting hole 51 and the outer side of the square rod 44, and improves the durability and reliability of the mold opening and closing structure.
[0032] refer to Figure 3 and Figure 4 The left and right guide components 4 also include two vertical plates 45 symmetrically fixedly connected to the opposite sides of each pair of two first limiting plates 43. Two sets of circular holes are symmetrically opened on the opposite sides of each pair of two vertical plates 45. Two sets of first elastic members are symmetrically fixedly connected to the inner sidewalls of the two sets of circular holes. Two sets of circular rods 46 are symmetrically fixedly connected to the opposite ends of the two sets of first elastic members. The two sets of circular rods 46 are symmetrically movably inserted into the two sets of circular holes. The opposite ends of the two sets of circular rods 46 are respectively fixedly connected to the left and right inner sidewalls of the mounting cavity 42. The left and right guide components 4 also include two third limiting plates 47 symmetrically fixedly connected to the bottom wall of the mounting cavity 42. The two third limiting plates 47 are located directly below the two first limiting plates 43. Each pair of two second limiting plates 53 is symmetrically rotatably connected to the front and rear sides of the fixed rod 52 through a first rotating rod and a first torsion spring.
[0033] Specifically, the first elastic element and the first torsion spring enable the first limiting plate 43 to move left and right, and the second limiting plate 53 to swing back and forth. This allows the square rod 44 to further reduce the wear on the left and right sides of the first limiting plate 43, the second limiting plate 53, the square rod 44, and the inner wall of the limiting hole 51 when the square rod 44 moves downward with the upper template 2 and comes into contact with the side of the first limiting plate 43 and the side of the second limiting plate 53.
[0034] refer to Figure 4 and Figure 6 The left and right guide components 4 also include two sets of balls 48 symmetrically rotatably connected to the left and right sides of the square rod 44. The two sets of balls 48 can respectively abut against the sides of the two first limiting plates 43 that are close to each other.
[0035] Specifically, the rolling friction between the ball bearing 48 and the side of the first limiting plate 43 greatly reduces the wear on the side of the first limiting plate 43 and the left and right sides of the square rod 44, effectively improving the durability and reliability of the opening and closing mechanism.
[0036] refer to Figure 6 The left and right guide components 4 also include two pairs of vertical grooves 49 symmetrically opened on the adjacent sides of each pair of two first limiting plates 43. Two pairs of movable plates are symmetrically slidably connected between the front and rear inner sidewalls of the two pairs of vertical grooves 49. Two pairs of vertical holes are symmetrically opened at the bottom of the two pairs of movable plates. Two pairs of vertical rods are movably inserted into the two pairs of vertical holes. The bottom ends of the two pairs of vertical rods pass through the vertical holes and are fixedly connected to the inner bottom wall of the vertical grooves 49. Two pairs of second elastic elements are symmetrically fixedly connected between the inner top wall of the two pairs of vertical holes and the top ends of the two pairs of vertical rods. Two contact plates 410 are symmetrically fixedly connected between the adjacent sides of the two pairs of movable plates. The upper half of the two contact plates 410 is two symmetrical third inclined surfaces, which are distributed in an inverted V-shape.
[0037] Specifically, when the ball 48 rubs and presses against the side of the contact plate 410, the contact plate 410 will overcome the elastic force of the second elastic element and move downward. This can further reduce the friction between the ball 48 and the side of the contact plate 410, and further reduce the wear on the side of the contact plate 410 and the outer surface of the ball 48.
[0038] refer to Figure 3 and Figure 5 Two pairs of fixing rods 52 are symmetrically and movably inserted into the inner bottom wall of the two mounting cavities 42. A lifting assembly 6 is connected to the lower template 3. The lifting assembly 6 is used to lift the two pairs of fixing rods 52 upward and insert them into the two pairs of limiting holes 51 respectively.
[0039] The lifting assembly 6 includes two pairs of first guide holes 61 symmetrically opened on the bottom walls of two pairs of rectangular cavities. The lifting assembly 6 also includes two pairs of second guide holes symmetrically opened on the bottom walls of two pairs of mounting cavities 42. The two pairs of first guide holes 61 are aligned with the two pairs of second guide holes. The lifting assembly 6 also includes two through cavities 62 symmetrically opened at the bottom of the lower template 3. The bottom ends of the two pairs of first guide holes 61 are connected to the top walls of the two through cavities 62. The fixing rods 52 and each pair of two second limiting plates 53 pass through the second guide holes and the first guide holes 61 and extend into the through cavities 62. The lifting assembly 6 also includes two pairs of lifting plates 63 symmetrically fixedly connected to the bottom ends of the two pairs of fixing rods 52. Two pairs of third elastic elements 64 are symmetrically fixedly connected between the tops of the two pairs of lifting plates 63 and the top walls of the two through cavities 62. The lower template 3 is symmetrical on the front. Two long rods 65 are rotatably connected. Two iron handles 66 are symmetrically fixed to the front ends of the two long rods 65. Two magnetic blocks 67 are symmetrically fixed to the front of the lower template 3. The two handles 66 can be attached to the sides of the two magnetic blocks 67 respectively. The rear ends of the two long rods 65 penetrate the front side wall of the lower template 3 and are symmetrically rotatably connected to the rear inner wall of the two through cavities 62. Two pairs of cams 68 are symmetrically fixed to the outer circumference of the two long rods 65. The outer edges of the two pairs of cams 68 are respectively pressed against the bottom surfaces of the two pairs of lifting plates 63. Thus, by rotating the handles 66, the cams 68 can be rotated forward or backward. The cams 68 can cooperate with the third elastic element 64 to move the fixed rod 52 and the second limiting plate 53 up and down to insert into or pull out of the limiting hole 51.
[0040] Specifically, by using the lifting assembly 6, the fixing rod 52 and the second limiting plate 53 can be pulled downward from the limiting hole 51 before the mold is opened. This avoids the swaying that occurs when the hydraulic cylinder drives the upper template 2 and the square rod 44 to move upward, which would increase the wear on the inner wall of the limiting hole 51 and the side of the second limiting plate 53. This greatly improves the durability and reliability of the opening and closing mechanism.
[0041] Working principle: The hydraulic cylinder pushes the fixed plate 1 and the upper template 2 downward to close with the lower template 3. At this time, the two opposing rods 44 will move downward with the upper template 2 and be inserted into the gap between the two corresponding first limit plates 43 below.
[0042] By rotating the two handles 66, the two pairs of cams 68 are driven to rotate. The cams 68, in conjunction with the third elastic element 64, drive the fixed rod 52 and the second limiting plate 53 to move upward to the uppermost side.
[0043] During the downward movement of the square rod 44, under the limiting guidance of the two contact plates 410, the two first limiting plates 43, and the two third limiting plates 47, the upper template 2 and the lower template 3 are more accurately aligned and closed in the left and right directions. At the same time, under the limiting guidance of the limiting hole 51, the first rotating rod, the first torsion spring, and the second limiting plate 53, the upper template 2 and the lower template 3 are more accurately aligned and closed in the front and back directions. This allows the upper template 2 and the lower template 3 to close precisely, which can effectively improve the dimensional accuracy and quality of the automotive rubber strip after molding, thereby effectively improving the reliability and practicality of the opening and closing mechanism.
[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A semi-automatic opening and closing mold mechanism for automobile rubber strip, comprising a fixed plate (1) and a lower mold plate (3), characterized in that: The bottom of the fixed plate (1) is fixedly connected to the upper template (2), and the lower template (3) is provided with left and right guide components (4) and front and rear guide components (5); The left and right guide components (4) include two pairs of rectangular cavities symmetrically opened on the front and rear sides of the lower template (3). Two pairs of mounting blocks (41) are symmetrically fixedly connected in the two pairs of rectangular cavities by bolts. Two pairs of mounting cavities (42) are symmetrically opened on the top surface of the two pairs of mounting blocks (41). Two first limiting plates (43) are symmetrically connected in the mounting cavities (42). The upper half of the two first limiting plates (43) is a symmetrical first inclined surface. The two first inclined surfaces are inverted V-shape. The left and right guide components (4) also include two pairs of square rods (44) symmetrically fixedly connected to the bottom of the upper template (2). The square rods (44) can be inserted between the corresponding pair of first limiting plates (43). The left and right sides of the square rods (44) are respectively attached to the lower half of the side of the pair of first limiting plates (43) that are close to each other. The front and rear guide components (5) are used to guide and limit the parallel bar (44) in the front and rear directions.
2. The semi-automatic opening and closing mold mechanism for automobile rubber strip as claimed in claim 1, wherein: The front and rear guide assembly (5) includes two pairs of limiting holes (51) symmetrically opened on the bottom ends of two pairs of opposite rods (44). The front and rear guide assembly (5) also includes two pairs of fixing rods (52) symmetrically connected to the bottom walls of two pairs of mounting cavities (42). Two second limiting plates (53) are symmetrically connected to the front and rear sides of the fixing rods (52). The upper half of the two second limiting plates (53) is a symmetrical second inclined surface. The two second inclined surfaces are inverted V-shape. The four pairs of second limiting plates (53) are respectively inserted into the two pairs of limiting holes (51). The front and rear inner sidewalls of the limiting holes (51) can respectively fit with the lower half of the front and rear sidewalls of a pair of second limiting plates (53).
3. The semi-automatic opening and closing mold mechanism for automotive rubber strips according to claim 2, characterized in that: The left and right guide assembly (4) also includes two vertical plates (45) symmetrically fixedly connected to the opposite sides of each pair of two first limiting plates (43). Two sets of circular holes are symmetrically opened on the opposite sides of each pair of two vertical plates (45). Two sets of first elastic elements are symmetrically fixedly connected to the inner sidewalls of the two sets of circular holes. Two sets of circular rods (46) are symmetrically fixedly connected to the opposite ends of the two sets of first elastic elements. The two sets of circular rods (46) are symmetrically movably inserted into the two sets of circular holes. The opposite ends of the two sets of circular rods (46) are respectively fixedly connected to the left and right inner sidewalls of the mounting cavity (42). The left and right guide assembly (4) also includes two third limiting plates (47) symmetrically fixedly connected to the bottom wall of the mounting cavity (42). The two third limiting plates (47) are located directly below the two first limiting plates (43). Each pair of two second limiting plates (53) are symmetrically rotated and connected to the front and rear sides of the fixed rod (52) through a first rotating rod and a first torsion spring.
4. The semi-automatic opening and closing mold mechanism for automotive rubber strips according to claim 3, characterized in that: The left and right guide components (4) also include two sets of ball bearings (48) symmetrically rotatably connected to the left and right sides of the square rod (44), and the two sets of ball bearings (48) can respectively abut against the sides of the two first limiting plates (43) that are close to each other.
5. The semi-automatic opening and closing mold mechanism for automotive rubber strips according to claim 4, characterized in that: The left and right guide components (4) also include two pairs of vertical grooves (49) symmetrically opened on the adjacent sides of each pair of two first limiting plates (43). Two pairs of movable plates are symmetrically slidably connected between the front and rear inner sidewalls of the two pairs of vertical grooves (49). Two pairs of vertical holes are symmetrically opened at the bottom of the two pairs of movable plates. Two pairs of vertical rods are movably inserted into the two pairs of vertical holes. The bottom ends of the two pairs of vertical rods pass through the vertical holes and are fixedly connected to the inner bottom wall of the vertical grooves (49). Two pairs of second elastic elements are symmetrically fixedly connected between the inner top wall of the two pairs of vertical holes and the top ends of the two pairs of vertical rods. Two contact plates (410) are symmetrically fixedly connected between the adjacent sides of the two pairs of movable plates. The upper half of the two contact plates (410) are two symmetrical third inclined surfaces, and the two third inclined surfaces are distributed in an inverted V-shape.
6. The semi-automatic opening and closing mold mechanism for automotive rubber strips according to claim 5, characterized in that: Two pairs of fixing rods (52) are symmetrically and movably inserted into the inner bottom wall of the two mounting cavities (42). The lower template (3) is connected to a lifting assembly (6), which is used to lift the two pairs of fixing rods (52) upward and insert them into the two pairs of limiting holes (51) respectively.