A linkage demoulding structure for an injection mold of a vehicle lamp

Abstract

The present invention belongs to the field of mold technology, and specifically relates to a linkage demolding structure of a headlight injection mold. It solves the problem of high linkage cost between draw blocks in existing molds. The linkage demolding structure of the headlight injection mold comprises a mold base, and the linkage demolding structure of the headlight injection mold comprises a draw block 1 and a draw block 2 which are slidably arranged on the mold base, the draw block 1 has a molding surface 1, and the draw block 2 has a molding surface 2, the mold base is provided with a slide groove 2 for guiding the sliding direction of the draw block 2, the draw block 2 is provided with a slider 2 which cooperates with the slide groove 2, and is characterized in that the mold base is also provided with a driving source 1 for driving the draw block 1 to move and demold, and a force transmission mechanism is provided between the draw block 1 and the draw block 2 which can generate a pulling force on the draw block 2 when the draw block 1 moves, and the draw block 1 and the draw block 2 are successively moved and demolded under the action of the force transmission mechanism. The present invention realizes a more compact overall structure of the mold and reduces the cost of mold manufacturing.

Description

Technical Field

[0001] The invention belongs to the technical field of molds, and in particular relates to a linkage demoulding structure of an injection mold for a vehicle lamp. Background Art

[0002] With the development of the automobile industry, the shape of the headlight shade has rich curved surface features, which requires different inner draw blocks on the mold base to cooperate to form a molding cavity. Due to the rich curved surfaces on the headlight shade, if multiple inner draw blocks are demolded in one direction at the same time, the molded headlight shade will be damaged. Therefore, in order to enable the injection molded headlight shade to be demolded smoothly, the withdrawal of each inner draw block needs to have a sequence, and each inner draw block has a different demolding direction, so that each inner draw block will not be interfered by the shape of the headlight shade. In the existing headlight mold, two inner draw blocks are usually used to demold the workpiece. Usually, there is an angle between the demolding movement directions of the two inner draw blocks. For the different demolding directions of the two inner draw blocks, a cylinder is usually used, and one inner draw block needs to move first to make way for the demolding of the other inner draw block. In the prior art, a cylinder is usually used to achieve the sequence of demoulding and different demoulding angles. However, since one cylinder can only drive one inner drawer block to move in a fixed direction, and the different demoulding directions of each inner drawer block are achieved by different cylinder placement angles, the existing solution for sequentially withdrawing the inner drawer blocks is to connect a cylinder to each inner drawer block, and use a PLC or a single-chip microcomputer to realize the sequential operation of each cylinder to achieve the technical effect of sequentially withdrawing the inner drawer blocks. However, connecting each inner drawer block to a cylinder will lead to an increase in cost. In the prior art, there is also a solution to make different inner drawer blocks have different demoulding angles, in which one of the inner drawer blocks is driven by a cylinder, and another inner drawer block has a sliding-matching inclined surface with the inner drawer block moved by the cylinder, and the other inner drawer block uses a spring as its driving mechanism to press on the inclined surface. When the cylinder drives one of the inner drawer blocks to demould, the other inner drawer block can produce a different demoulding angle from the cylinder through the action of the inclined surface and the spring. Summary of the invention

[0003] The purpose of the present invention is to address the above problems in the prior art and to propose a linkage demoulding structure for a headlight injection mold. The technical problem to be solved by the present invention is: how to achieve linkage between the ejection blocks and reduce the mold manufacturing cost.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A linkage demolding structure of a headlight injection mold, the mold includes a mold base, and the linkage demolding structure of the headlight injection mold includes a draw block 1 and a draw block 2 slidably arranged on the mold base, the draw block 1 has a molding surface 1, and the draw block 2 has a molding surface 2, the mold base is provided with a slide groove 2 for guiding the sliding direction of the draw block 2, and the draw block 2 is provided with a slider 2 cooperating with the slide groove 2, and the characteristic is that the mold base is also provided with a driving source 1 for driving the draw block 1 to move and demold, and a force transmission mechanism is provided between the draw block 1 and the draw block 2, which can generate a pulling force on the draw block 2 when the draw block 1 moves, and under the action of the force transmission mechanism, the draw block 1 and the draw block 2 are moved and demolded in succession.

[0006] The curved surface on the inner wall of the headlight product is formed by the molding surface 1 on the drawer block 1 and the molding surface 2 on the drawer block 2. The molding surface 1 on the drawer block 1 corresponds to the large curved surface of the headlight shade, and the molding surface on the drawer block 2 is the curved surface with a larger curved angle on the headlight shade. Due to the particularity of the curved surface structure, the drawer block 1 and the drawer block 2 need to be demolded one after another. In this mold, after the injection molding is completed, the driving source 1 can drive the drawer block 1 to slide on the mold base and demold first. At the same time, a force transmission mechanism is arranged between the drawer block 1 and the drawer block 2. In the process of the drawer block 1 sliding outward to demold, the drawer block 2 is driven by the force transmission mechanism to move after the drawer block 1 moves. The slider 2 on the drawer block 2 and the slide groove 2 on the mold base cooperate with each other to guide the movement of the drawer block 2, so that the drawer block 2 can move in a direction different from the drawer block 1 for demolding. That is to say, the present application designs a guide reversing structure on the slider and the slide groove 2, and at the same time cooperates with the setting of a force transmission mechanism between the draw block 1 and the draw block 2, so that the draw block 1 first moves in one direction for demolding, and then drives the draw block 2 to achieve linked movement in another direction for demolding, thereby achieving demolding by driving the draw block 1 and the draw block 2 to move in two different directions respectively by only one driving source. Compared with the existing technology, the linked demolding structure of the car light injection mold only uses one driving source, and the overall structure is more compact, and the energy consumption is lower, while also reducing the mold manufacturing cost.

[0007] In the above-mentioned linkage demolding structure of the car light injection mold, the driving source 1 can drive the pull block 1 to move forward and backward in the horizontal direction, the force transmission mechanism includes a slide groove 1 arranged on the pull block 1 in the horizontal direction, and a slider 1 is provided on the pull block 2 to cooperate with the slide groove 1. The slide groove 1 is inclined relative to the moving direction of the pull block 1 and forms an angle with the opening facing backward, and the pull block 2 is cross-arranged between the sliding direction and the slide groove 1 on the mold base. The driving source 1 drives the drawing block 1 to move backward in the horizontal direction. The slide groove 1 on the drawing block 1 is inclined relative to the moving direction of the drawing block 1 and forms an angle with the opening facing backward. The slider 1 on the drawing block 2 cooperates with the slide groove 1. When the drawing block 1 moves backward, the slide groove 1 acts on the slider 1 to provide power for the movement of the drawing block 2 and drive the drawing block 2 to move. The drawing block 2 moves backward in the opening direction of the slide groove 2. Since the drawing block 1 is not fixedly connected with the drawing block 2 to drive it to move, but moves relative to the slider 1 through the slide groove 1, the groove wall of the slide groove 1 acts on the slider 1, so the drawing block 2 and the drawing block 1 form a sequential moving demolding, and under the action of the slide groove 1, the slide groove 1, the slide groove 2 and the slider 2, the moving demolding speed of the drawing block 2 is less than the moving demolding speed of the drawing block 1, the drawing block 1 and the drawing block 2 are linked and the mold manufacturing cost is reduced.

[0008] In the above-mentioned linkage demoulding structure of the car lamp injection mold, the second slide groove is opened in the horizontal direction, and the angle formed between the second slide groove and the first slide groove is an acute angle. The second slide groove on the mold base cooperates with the second slider on the second drawer block, so that when the drawer block is driven by the first drawer block, the drawer block moves obliquely backward, and the moving direction of the drawer block has an angle relative to the moving direction of the drawer block. Through the cooperation of the first slide groove, the first slider, the second slide groove and the second slider, the drawer block drives the drawer block to be linked, and the drawer block and the first drawer block form a sequential demoulding, the drawer block and the drawer block are linked and the mold manufacturing cost is reduced.

[0009] In the above-mentioned linkage demoulding structure of the headlight injection mold, the driving source 1 has a vertically arranged piston rod 1, the end of the piston rod 1 is connected to a pull block 1, the pull block 1 is located in front of the pull block 1, the pull block 1 is provided with an inclined slide groove 3 on the surface facing the pull block 1, the pull block 1 has a slider 3 matched with the slide groove 3, the pull block 1 is horizontally arranged with a limit block 1, and the mold base is horizontally provided with a limit surface that abuts against the limit block 1 to prevent the limit block from moving down. The driving source 1 drives the piston rod 1 to extend and retract, and the piston rod 1 drives the pull block 1 to move downward. Under the action of the limit block 1 and the limit surface, the pull block 1 cannot move downward, and the pull block 1 can only move backward to demould along with the downward movement of the pull block 1.

[0010] In the above-mentioned linkage demoulding structure of the headlight injection mold, a locking block is provided below the pull block 1, which can abut against the pull block 1 to prevent the pull block from moving downward, and the locking block is connected to a driving source 2 that can drive the locking block to move and release the pull block from moving downward. Since there is pressure in the mold cavity during the injection molding process, in order to stabilize the position of the pull block 1 and the pull block 2 during the injection molding process, the locking block abuts against the pull block 1 to prevent the pull block 1 from moving, so that the position of the pull block 1 remains stable during the injection molding process, thereby keeping the position of the pull block 1 and the pull block 2 stable during the injection molding process, and not being affected by the pressure in the mold cavity, thereby improving the injection molding quality. When the injection molding is completed and the mold needs to be demoulded, the driving source 2 moves to drive the locking block to move, and releases the limit of the downward movement of the pull block 1.

[0011] In the above-mentioned linkage demoulding structure of the headlight injection mold, a travel groove is provided on the pull block 1 in the vertical direction, and a limit strip that can be inserted into the travel groove is provided on the locking block. The top of the limit strip can abut against the bottom surface of the pull block 1, and the driving source 2 can drive the locking block to move backward to align the limit strip with the travel groove. During the injection molding process, the limit strip on the locking block abuts against the bottom surface of the pull block 1 to prevent the pull block 1 from moving downward. When it is necessary to release the limit of the downward movement of the pull block 1, the driving source 2 drives the locking block to move backward to align with the travel groove. At this time, if the pull block moves down, the limit strip is inserted into the travel groove.

[0012] In the above-mentioned linkage demoulding structure of the headlight injection mold, the driving source 2 has a piston rod 2 placed horizontally, the end of the piston rod 2 is connected to a pull block 2 and can exert a force to move the pull block 2 in the left and right directions, the pull block 2 is provided with a slide groove 5 inclined relative to the moving direction of the piston rod 2, the locking block has a slider 5 matched with the slide groove 5, and the mold base is provided with two limit blocks 2 in the horizontal direction, and the two limit blocks 2 are respectively located on the left and right sides of the locking block. The working piston rod 2 of the driving source 2 drives the pull block 2 to move left and right. Since the slide groove 5 on the pull block 2 is inclined, the locking block has a slider 5 matched with the slide groove 5, combined with the restriction of the limit block 2 on the left and right movement of the locking block, when the driving source 2 drives the pull block 2 to move, the locking block can only move backward, so that the limit bar is aligned with the travel groove, and the limit on the downward movement of the pull block 1 is released.

[0013] In the above-mentioned linkage demoulding structure of the car lamp injection mold, the driving source 1 drives the drawer block 1 to move backward in the horizontal direction, and the force transmission mechanism includes a rubber band, the two ends of which are respectively connected to the drawer block 1 and the drawer block 2, and the drawer block 2 is arranged crosswise between the sliding direction of the drawer block 1 on the mold base and the moving direction of the drawer block 1. When the driving source 1 drives the drawer block 1 to move backward, the drawer block 1 drives the drawer block 2 to move through the rubber band. Since the rubber band is elastic, when the drawer block 1 just starts to move, the rubber band is stretched, and the position of the drawer block 2 remains stationary or slightly loosens. When the rubber band is completely stretched, the movement of the drawer block 1 can drive the drawer block 2 to move, and the drawer block 2 moves along its sliding direction on the slider, and the rubber band will also rotate with the change of the position between the drawer block 1 and the drawer block 2.

[0014] In the above-mentioned linkage demoulding structure of the headlight injection mold, the locking block can abut against the bottom end of the pull block 1, and the driving source 2 has a piston rod 2 placed horizontally and longitudinally, and the piston rod 2 is connected to the locking block and can drive the locking block to move forward and backward so that the locking block loses abutment with the bottom end of the pull block 1. The piston rod 2 directly drives the locking block to move backward, and the locking block completely staggers with the pull block 1, so that the locking block loses abutment with the bottom end of the pull block 1, and the limit of the pull block moving down is released.

[0015] In the above-mentioned linkage demoulding structure of the car lamp injection mold, a slide groove 4 is vertically opened on the mold base, and a slider 4 is provided on the pull block 1 to cooperate with the slide groove 4. The slide groove 4 on the mold base and the slider 1 on the pull block 1 cooperate to guide the up and down movement of the pull block 1.

[0016] Compared with the prior art, the linkage demoulding structure of the headlight injection mold has the following advantages:

[0017] 1. The demoulding of the first and second blocks is linked by a force transmission mechanism, so that the demoulding of the first and second blocks is completed by one driving source, thereby reducing the production cost.

[0018] 2. Through the cooperation of slide groove 1, slider 1, slide groove 2 and slider 2, the drawer block 1 drives the drawer block 2 to move in conjunction with each other, and the drawer block 2 and the drawer block 1 form a sequential moving demoulding, the drawer block 1 and the drawer block 2 are linked to each other and the mold manufacturing cost is reduced.

[0019] 3. The locking block is used to keep the position of the pull block 1 stable, so that the positions of the pull block 1 and the pull block 2 are also kept stable during the injection molding process, which is not affected by the pressure in the mold cavity, thereby improving the injection molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of one viewing angle of the linkage demoulding structure of the headlight injection mold.

[0021] Figure 2This is an exploded view of the linkage demoulding structure of the car lamp injection mold.

[0022] Figure 3 It is a schematic diagram of the structure of block one and block two.

[0023] Figure 4 It is a front view of the drawing block.

[0024] Figure 5 It is a three-dimensional schematic diagram of the linkage demoulding structure of the car lamp injection mold from another perspective.

[0025] Figure 6 It is a schematic diagram of the structural relationship between the locking block and the second pulling block.

[0026] Figure 7 This is a state diagram of the linkage demoulding structure of the headlight injection mold, in which the locking block moves and the pulling block releases the downward limit when demoulding.

[0027] Figure 8 This is a state diagram of the linkage demoulding structure of the headlight injection mold when the first and second demoulding blocks are completed.

[0028] Fig. 9 This is a cross-sectional view of the linkage demoulding structure of the headlight injection mold in the initial position state during demoulding.

[0029] Fig.10 It is a cross-sectional view of the linkage demoulding structure of the headlight injection mold when the first and second demoulding blocks are completed.

[0030] In the figure, 1, mold base; 1a, slide groove 2; 1b, limit surface; 1c, limit block 2; 1d, slide groove 4;

[0031] 2. Pulling block 1; 2a. Slide 1; 2b. Slide 3; 2c. Limiting block 1; 2d. Forming surface 1;

[0032] 3. Block 2; 3a. Slider 1; 3b. Slider 2; 3c. Forming surface 2;

[0033] 4. Driving source one; 4a. Piston rod one;

[0034] 5. Driving source 2; 5a. Piston rod 2;

[0035] 6. Force transmission mechanism;

[0036] 7, pull block one; 7a, slider three; 7b, travel groove; 7c, slider four;

[0037] 8. Locking block; 8a. Limiting strip; 8b. Slider 5;

[0038] 9. Pull block two; 9a. Slide slot five. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] Embodiment 1

[0041] like Figure 1 and Figure 2 As shown, the mold includes a mold base 1. The linkage demoulding structure of the headlight injection mold includes a draw block 2 and a draw block 3 slidingly arranged on the mold base 1. The draw block 2 has a molding surface 2d, and the draw block 3 has a molding surface 3c. During the injection molding process, the molding surface 2d and the molding surface 3c are smoothly connected and transitioned for molding the inner wall of the headlight.

[0042] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, the die base 1 is provided with a driving source 4, which includes a vertically arranged piston rod 4a, the top of which is connected with a pull block 7, which is located between the die base 1 and the draw block 2, and the pull block 7 is slidably arranged on the die base 1. Specifically, a slide groove 41d is provided on the die base 1 in the vertical direction, and a slider 47c is provided on the pull block 7 to cooperate with the slide groove 41d. The driving source drives the pull block 7 to move up and down along the direction in which the slide groove is opened. The driving source 4 can be a cylinder or a driving device capable of linear movement, such as a hydraulic cylinder.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, an inclined slide groove 3 2b is provided on the surface of the drawing block 2 facing the pulling block 7, a sliding block 3 7a cooperating with the slide groove 3 2b is provided on the pulling block 7, the slide groove 3 2b is a T-shaped groove, and the sliding block 3 7a is also T-shaped, a limiting block 2c is horizontally provided on the drawing block 2, and a limiting surface 1b is horizontally provided on the mold base 1 to abut against the limiting block 2c to prevent the limiting block 2c from moving downward, the driving source 4 drives the piston rod 4a to extend and retract, and the piston rod 4a drives the pulling block 7 to move downward, and the drawing block 2 cannot move downward under the action of the limiting block 2c and the limiting surface 1b, and the drawing block 2 can only move backward to demould as the pulling block 7 moves downward.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the drawer block 2 3 is located on one side of the drawer block 1 2, and a force transmission mechanism 6 is provided between the drawer block 2 and the drawer block 2 3, which can generate a pulling force on the drawer block 2 3 when the drawer block 2 moves. Under the action of the force transmission mechanism 6, the drawer block 2 and the drawer block 2 3 move to be demoulded in sequence. The force transmission mechanism 6 includes a slide groove 1 2a arranged in the horizontal direction on the drawer block 2, and a slider 1 3a matched with the slide groove 1 2a is provided on the drawer block 2 3. The slide groove 1 2a is slightly inclined relative to the moving direction of the drawer block 2, so that when the drawer block 2 moves backward to be demoulded, the inner wall of the slide groove 1 2a can act on the slider 1 3a, and the slide direction of the drawer block 2 3 on the mold base 1 is arranged crosswise between the slide groove 1 2a. The driving source 14 drives the drawing block 2 to move backward in the horizontal direction. The slide groove 12a on the drawing block 2 is tilted relative to the moving direction of the drawing block 2. The slider 13a on the drawing block 3 cooperates with the slide groove 12a. Since the sliding direction of the drawing block 3 on the mold base 1 is cross-set between the slide groove 12a, when the drawing block 2 moves backward, the slide groove 12a acts on the slider 13a to drive the drawing block 3 to move. The drawing block 23 moves obliquely backward in its sliding direction on the mold base 1, and a chronological demolding is formed between the drawing block 3 and the drawing block 2. The drawing block 2 and the drawing block 3 are linked to reduce the mold manufacturing cost. The driving source 14 drives the drawing block 2 to move backward in the horizontal direction, and the slider 13a on the drawing block 23 cooperates with the slide groove 12a. Since the sliding direction of the drawing block 23 on the mold base 1 is cross-set between the slide groove 12a, when the drawing block 2 moves backward, the slide groove 12a acts on the slider 13a to drive the drawing block 23 to move, and the drawing block 23 moves obliquely backward in its sliding direction on the mold base 1, and a tandem demolding is formed between the drawing block 23 and the drawing block 2, and the drawing block 2 and the drawing block 3 are linked to reduce the mold manufacturing cost.

[0045] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the force transmission mechanism 6 also includes a chute 2 1a opened in the horizontal direction on the mold base 1, and a slider 2 3b matched with the chute 2 1a is provided on the drawer 2 3. An angle is formed between the chute 2 1a and the chute 1 2a, the opening of the angle faces forward, and the angle is an acute angle, and the angle of the acute angle is 60° to 70°, and 60° is preferably used as the angle. The chute 2 1a on the mold base 1 and the slider 2 3b on the drawer 2 3 cooperate, so that when the drawer 2 3 is driven by the drawer 1 2, the drawer 2 3 moves obliquely backward, and the moving direction of the drawer 2 3 has an angle relative to the moving direction of the drawer 1 2. Through the cooperation of the chute 1 2a, the slider 1 3a, the chute 2 1a and the slider 2 3b, the drawer 1 2 drives the drawer 2 3 to be linked, and the drawer 2 3 and the drawer 1 2 form a sequential moving demoulding.

[0046] Specifically, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a locking block 8 is provided below the pull block 7, which can abut against the pull block 7 to prevent the pull block 7 from moving downward. The locking block 8 is connected to a driving source 2 5 that can drive the locking block 8 to move and release the downward movement of the pull block 7. A travel groove 7b is provided on the pull block 7 in the vertical direction. The locking block 8 is provided with a limit bar 8a that can be inserted into the travel groove 7b, and the top of the limit bar 8a can abut against the bottom surface of the pull block 7. During the injection molding process, the limit bar 8a on the locking block 8 abuts against the bottom surface of the pull block 7 to prevent the pull block 7 from moving downward. When it is necessary to release the limit of the downward movement of the pull block 7, the driving source 2 5 drives the locking block 8 to move backward to align with the travel groove 7b. At this time, if the pull block 7 moves downward, the limit bar 8a is inserted into the travel groove 7b.

[0047] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 Fig. 9 and Fig.10 As shown, the driving source 25 has a piston rod 25a placed horizontally, the end of the piston rod 25a is connected to the pull block 29 and can exert a force to move the pull block 29 in the left and right directions, the pull block 29 is provided with a sliding groove 59a inclined relative to the moving direction of the piston rod 25a, the locking block 8 has a slider 58b matched with the sliding groove 59a, and the mold base 1 is provided with two limit blocks 21c in the horizontal direction, and the two limit blocks 21c are respectively located on the left and right sides of the locking block 8. The working piston rod 25a of the driving source 25 drives the pull block 29 to move left and right. Since the sliding groove 59a on the pull block 29 is inclined, the locking block 8 has a slider 58b matched with the sliding groove 59a, combined with the restriction of the locking block 8 to the left and right movement by the limit block 21c, when the driving source 25 drives the pull block 29 to move, the locking block 8 can only move backward, so that the limit bar 8a is aligned with the travel groove 7b, and the limit on the downward movement of the pull block 17 is released. The driving source 25 can be a cylinder or a hydraulic cylinder.

[0048] Embodiment 2

[0049] This embodiment is substantially the same as the first embodiment, and its force transmission mechanism 6 includes a rubber band, and the two ends of the rubber band are respectively connected to the first block 2 and the second block 3. When the driving source 1 4 drives the first block 2 to move backward, the first block 2 drives the second block 3 to move through the rubber band. Since the rubber band is elastic, when the first block 2 just starts to move, the rubber band is stretched, and the position of the second block 3 remains unchanged or slightly loosens. When the rubber band is completely stretched, the movement of the first block 2 can drive the second block 3 to move, and the second block 3 moves along the sliding direction on the slider, and the rubber band will also rotate with the change of the position between the first block 2 and the second block 3.

[0050] The locking block 8 can abut against the bottom end of the pull block 1 7. The driving source 2 5 has a horizontally longitudinally placed piston rod 2 5a, which is connected to the locking block 8 and can drive the locking block 8 to move forward and backward so that the locking block 8 loses abutment with the bottom end of the pull block 1 7. The piston rod 2 5a directly drives the locking block 8 to move backward, and the locking block 8 completely staggers with the pull block 1 7, so that the locking block 8 loses abutment with the bottom end of the pull block 1 7, and the limit of the downward movement of the pull block 1 7 is released.

[0051] A slot is provided on the mold base 1, and a limit block 2c is inserted into the slot. The limit block 2c can move forward and backward in the slot, but the upper wall and the lower wall of the slot are against the limit block 2c.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A linkage demoulding structure of a vehicle lamp injection mold, the mold comprising a mold base (1), the linkage demoulding structure of the vehicle lamp injection mold comprising a first draw block (2) and a second draw block (3) slidably arranged on the mold base (1), the first draw block (2) having a molding surface (2d), the second draw block (3) having a molding surface (3c), the mold base (1) being provided with a second slide groove (1a) for guiding the sliding direction of the second draw block (3), the second draw block (3) being provided with a second slider (3b) cooperating with the second slide groove (1a), characterized in that: The mold base (1) is also provided with a driving source (4) for driving the first drawer block (2) to move and demould; a force transmission mechanism (6) is provided between the first drawer block (2) and the second drawer block (3) and is capable of generating a pulling force on the second drawer block (3) when the first drawer block (2) moves; under the action of the force transmission mechanism (6), the first drawer block (2) and the second drawer block (3) are successively moved and demould; the driving source (4) is capable of driving the first drawer block (2) to move forward and backward in a horizontal direction; the force transmission mechanism (6) comprises a slide groove (2a) provided in a horizontal direction on the first drawer block (2); a slider (3a) is provided on the second drawer block (3) and is matched with the slide groove (2a); the slide groove (2a) is inclined relative to the moving direction of the first drawer block (2) and is formed to open toward the rear. The draw block 1 (3) is arranged crosswise between the sliding direction and the slide groove 1 (2a) on the mold base (1); the driving source 1 (4) is provided with a vertically arranged piston rod 1 (4a), the end of the piston rod 1 (4a) is connected with a pull block 1 (7), the draw block 1 (2) is located at the front side of the pull block 1 (7), the draw block 1 (2) is provided with an inclined slide groove 3 (2b) on the surface facing the pull block 1 (7), the pull block 1 (7) is provided with a slider 3 (7a) matched with the slide groove 3 (2b), the draw block 1 (2) is horizontally provided with a limit block 1 (2c), and the mold base (1) is horizontally provided with a limit surface (1b) abutting against the limit block 1 (2c) to prevent the limit block 1 (2c) from moving downward.

2. The linkage demoulding structure of the vehicle lamp injection mold according to claim 1, characterized in that: The second slide groove (1a) is opened in the horizontal direction, and the angle formed between the second slide groove (1a) and the first slide groove (2a) is an acute angle.

3. The linkage demoulding structure of the vehicle lamp injection mold according to claim 1, characterized in that: A locking block (8) is provided below the pull block (7) and can abut against the pull block (7) to prevent the pull block (7) from moving downward. The locking block (8) is connected to a driving source (5) that can drive the locking block (8) to move and release the pull block (7) from moving downward.

4. The linkage demoulding structure of the vehicle lamp injection mold according to claim 3, characterized in that: The pulling block (7) is provided with a travel groove (7b) in the vertical direction, and the locking block (8) is provided with a limit strip (8a) that can be inserted into the travel groove (7b). The top end of the limit strip (8a) can abut against the bottom surface of the pulling block (7), and the driving source (5) can drive the locking block (8) to move backward so that the limit strip (8a) is aligned with the travel groove (7b).

5. The linkage demoulding structure of the vehicle lamp injection mold according to claim 4, characterized in that: The driving source 2 (5) has a piston rod 2 (5a) placed horizontally, the end of the piston rod 2 (5a) is connected to a pull block 2 (9) and can exert a force on the pull block 2 (9) to move in the left and right directions, the pull block 2 (9) is provided with a slide groove 5 (9a) inclined relative to the moving direction of the piston rod 2 (5a), the locking block (8) has a slider 5 (8b) matched with the slide groove 5 (9a), and the mold base (1) is provided with two limit blocks 2 (1c) in the horizontal direction, and the two limit blocks 2 (1c) are respectively located on the left and right sides of the locking block (8).

6. The linkage demoulding structure of the vehicle lamp injection mold according to claim 1, characterized in that: The driving source 1 (4) drives the drawer block 1 (2) to move backward in the horizontal direction. The force transmission mechanism (6) comprises a rubber band, the two ends of which are respectively connected to the drawer block 1 (2) and the drawer block 2 (3). The drawer block 2 (3) is arranged crosswise between the sliding direction on the mold base (1) and the moving direction of the drawer block 1 (2).

7. The linkage demoulding structure of the vehicle lamp injection mold according to claim 3, characterized in that: The locking block (8) can abut against the bottom end of the pulling block (7); the driving source (5) has a piston rod (5a) placed horizontally and longitudinally; the piston rod (5a) is connected to the locking block (8) and can drive the locking block (8) to move forward and backward so that the locking block (8) loses the abutment with the bottom end of the pulling block (7).

8. The linkage demoulding structure of the vehicle lamp injection mold according to claim 1, characterized in that: A sliding groove four (1d) is vertically provided on the mold base (1), and a sliding block four (7c) matching with the sliding groove four (1d) is provided on the pulling block one (7).

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