Inclined top inner pulling structure of sliding block

Abstract

The invention belongs to the field of automobile injection molds, and particularly relates to a sliding block pitched roof inner pulling structure which comprises a large sliding block, a T-shaped pitched roof, a T-shaped sliding block, a wear-resisting plate, a pressing plate, a sliding fixing block, two nitrogen springs and two limiting rods. The T-shaped pitched roof, the T-shaped sliding block, the wear-resisting plate, the pressing plate, the sliding fixing block, the two nitrogen springs and the two limiting rods are all installed in the large sliding block; the front portion of the top of the T-shaped sliding block inclines downwards, the rear portion of the top of the T-shaped sliding block is a horizontal plane, the bottom of the T-shaped pitched roof is installed on the front portion of the top of the T-shaped sliding block in a sliding mode, the rear end of the T-shaped pitched roof is fixed to the wear-resisting plate, and the rear end of the T-shaped sliding block is fixed to the middle of the front end of the sliding fixing block. The pressing plate is fixed to the large sliding block, the bottom face of the pressing plate makes contact with the horizontal plane of the T-shaped sliding block, and the front face of the pressing plate makes contact with the back face of the wear-resisting plate. The problems of high cost and complex mold in the prior art are solved.

Description

Technical Field

[0001] The invention belongs to the field of automobile injection molds, and in particular relates to a slider inclined top inner drawing structure. Background Art

[0002] For plastic mold products, there are other undercuts in the direction of the slider movement. At present, the slider is generally designed with a sloping top structure. Figure 1 As shown in the figure, due to the limitation of product features and the high positioning size requirements, the outer large slider is generally pumped by a cylinder, and the internal inclined top structure is designed. At present, this structure is complex, the mold has the risk of getting stuck, and the maintenance of the mold after disassembly and assembly is troublesome and the cost is relatively high. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a slider inclined top inward-pull-out structure, through the cooperation of the T-shaped inclined top, the T-shaped sliding block, the sliding fixed block and the nitrogen spring, the T-shaped inclined top moves downward to disengage from the undercut on the product, and then the large slider is moved backward to disengage from the entire product, so as to solve the original problem of high cost and complex mold.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slider inclined top inner withdrawal structure, comprising a large slider, a T-shaped inclined top, a T-shaped sliding block, a wear-resistant plate, a pressure plate, a sliding fixed block, two nitrogen springs and two limit rods, the T-shaped inclined top, the T-shaped sliding block, the wear-resistant plate, the pressure plate, the sliding fixed block, the two nitrogen springs and the two limit rods are all installed in the large slider, the front part of the top of the T-shaped sliding block is tilted downward, and the rear part is a horizontal plane, the bottom of the T-shaped inclined top is slidably installed at the front of the top of the T-shaped sliding block, the rear end of the T-shaped inclined top is fixed to the wear-resistant plate, and the T-shaped sliding The rear end of the block is fixed in the middle of the front end of the sliding fixed block, two nitrogen springs are installed on both sides of the front end of the sliding fixed block, the pressure plate is fixed on the large slider and its bottom surface contacts the horizontal surface of the T-shaped sliding block, and its front surface contacts the back of the wear-resistant plate, two limit rods are inserted into both sides of the large slider and their top ends are inserted into both sides of the sliding fixed block. When the mold is opened, the two nitrogen springs pop out on the large slider, thereby pushing the sliding fixed block and the T-shaped sliding block backward in the large slider in the opposite direction, thereby causing the T-shaped inclined top to move downward until the sliding fixed block is limited by the two limit rods and stops moving.

[0005] Furthermore, a hollow groove matching with the T-shaped inclined top, T-shaped sliding block, wear-resistant plate, pressure plate and sliding fixed block is opened in the middle of the large sliding block, and holes matching with the limit rods are opened on both sides of the large sliding block.

[0006] Furthermore, the T-shaped inclined top is inclined toward the front and bottom, the bottom of the T-shaped inclined top is set as a T-shaped block, the front of the top of the T-shaped sliding block is provided with a T-shaped slot adapted to the T-shaped block, and the length of the T-shaped block is longer than the T-shaped slot.

[0007] Furthermore, spring holes adapted to the nitrogen spring are provided on both sides of the front end of the sliding fixed block, and limiting grooves adapted to the limiting rods are provided on both sides of the sliding fixed block, and the limiting grooves are provided along the forward and backward moving directions.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention cooperates with the T-shaped inclined top, the T-shaped sliding block, the sliding fixed block and the nitrogen spring, and under the action of the nitrogen spring, the T-shaped inclined top moves downward through the T-shaped sliding block to disengage from the undercut on the product, and then the large sliding block is moved backward to disengage from the entire product, so as to solve the problem of the mold not needing to design a complex structure of the inclined top in the sliding block, and the mechanical form has a small structure, convenient disassembly and assembly, and low cost, thereby solving the problem of production stability and more convenient maintenance; the present invention occupies a small space, has a low mold cost, is easy to disassemble, has a stable structure, and the product will not produce flash and step difference after demoulding, thereby greatly reducing the risk in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the prior art structure;

[0010] Figure 2 It is a schematic diagram of the structure of the present invention;

[0011] Figure 3 It is an exploded view of the present invention;

[0012] Figure 4 It is a schematic diagram of the structure after the T-shaped inclined top, T-shaped sliding block, wear-resistant plate, pressing plate, sliding fixed block, two nitrogen springs and two limit rods are assembled in the present invention;

[0013] Figure 5 It is an internal cross-sectional view after the present invention is assembled;

[0014] Figure 6 It is a cross-sectional view of the T-shaped inclined top of the present invention when it is out of the product and buckled;

[0015] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0016] Figure 8 It is a cross-sectional view of the present invention when it is completely demoulded. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 2-8The present invention provides the following technical solutions: a slider inclined top inner withdrawal structure, comprising a large slider 2, a T-shaped inclined top 3, a T-shaped sliding block 4, a wear-resistant plate 5, a pressure plate 6, a sliding fixed block 7, two nitrogen springs 8 and two limit rods 9, the T-shaped inclined top 3, the T-shaped sliding block 4, the wear-resistant plate 5, the pressure plate 6, the sliding fixed block 7, the two nitrogen springs 8 and the two limit rods 9 are all installed in the large slider 2, the front end of the large slider 2, the T-shaped inclined top 3 and the T-shaped sliding block 4 are in contact with the surface of the product 1, the upper side of the front end of the T-shaped inclined top 3 is inverted in the groove 11 of the product 1, the T-shaped inclined top 3 is located above the T-shaped sliding block 4, and the T-shaped sliding The front part of the top of the moving block 4 is tilted downward, and the rear part is a horizontal plane. The bottom of the T-shaped inclined top 3 is slidably installed on the front part of the top of the T-shaped sliding block 4. The T-shaped inclined top 3 can slide obliquely downward on the T-shaped sliding block 4. The rear end of the T-shaped inclined top 3 is fixed to the wear-resistant plate 5. The rear end of the T-shaped sliding block 4 is fixed in the middle of the front end of the sliding fixed block 7. Two nitrogen springs 8 are installed on both sides of the front end of the sliding fixed block 7. The pressure plate 6 is fixed on the large sliding block 2 and its bottom surface contacts the horizontal surface of the T-shaped sliding block 4 and its front surface contacts the rear of the wear-resistant plate 5. Two limit rods 9 are inserted on both sides of the large sliding block 2 and their top ends are inserted on both sides of the sliding fixed block 7. When After the mold is opened, the two nitrogen springs 8 pop out on the large slider 2, thereby pushing the sliding fixed block 7 and the T-shaped slider 4 backward in the large slider 2 in the opposite direction. When the T-shaped slider 4 retreats, the large slider 2 will not move, so the pressure plate 6 will not move, but the top horizontal plane of the T-shaped slider 4 retreats, and the pressure plate 6 is always in contact with the horizontal plane of the T-shaped slider 4. Since the bottom of the T-shaped inclined top 3 is slidably installed on the front of the top of the T-shaped slider 4, the T-shaped slider 4 retreats, so that the T-shaped inclined top 3 moves downward, and the wear-resistant plate 5 at the rear end of the T-shaped inclined top 3 protects the T-shaped inclined top 3 to avoid damage after multiple movements. The T-shaped inclined top 3, the wear-resistant plate 5 also moves downward during the movement, but is always in contact with the pressure plate 6. The setting of the pressure plate 6 makes the movement of the T-shaped inclined top 3 more stable, which can improve the quality of demoulding at the groove 11 on the product 1, and will not produce flash and step difference. The T-shaped sliding block 4 moves backward until the sliding fixed block 7 is limited by the two limit rods 9 and stops moving. At this time, the upper side of the front end of the T-shaped inclined top 3 has been separated from the groove 11 on the product 1, and the T-shaped inclined top 3 moves downward by a distance a, a is 14mm. The mechanical form of the present invention has a small structure, occupies a small space, has a low mold cost, is easy to disassemble, and has a stable structure.

[0019] Specifically, a hollow groove 21 is provided in the middle of the large slider 2, which is compatible with the T-shaped inclined top 3, T-shaped sliding block 4, wear-resistant plate 5, pressure plate 6 and sliding fixed block 7. After the T-shaped inclined top 3, T-shaped sliding block 4, wear-resistant plate 5, pressure plate 6 and sliding fixed block 7 are assembled, they are just installed in the hollow groove 21. The T-shaped sliding block 4 and the sliding fixed block 7 can slide along the bottom surface of the hollow groove 21. Holes 22 compatible with the limit rods 9 are provided on both sides of the large slider 2. The two limit rods 9 are all inserted into the holes 22 on both sides, and the holes 22 on both sides pass through the large slider 2 so that the top ends of the two limit rods 9 are also inserted on both sides of the sliding fixed block 7. When the sliding fixed block 7 retreats a certain distance, the limit rods 9 limit the sliding fixed block 7.

[0020] Specifically, the T-shaped inclined top 3 is inclined downwardly toward the front, the bottom of the T-shaped inclined top 3 is set as a T-block 31, and the front of the top of the T-shaped sliding block 4 is provided with a T-slot 41 adapted to the T-block 31. The T-block 31 is slidably inserted into the T-slot 41. The length of the T-block 31 is longer than the T-slot 41. When installed in the initial position on the mold, the rear end of the T-shaped inclined top 3 protrudes obliquely above the T-slot 41. As the T-shaped sliding block 4 retreats, the T-shaped inclined top 3 gradually moves downward. When it finally stops, the wear-resistant plate 5 at the rear end of the T-shaped inclined top 3 just moves to the horizontal plane of the rear of the T-shaped sliding block 4.

[0021] Specifically, spring holes 71 compatible with the nitrogen springs 8 are provided on both sides of the front end of the sliding fixed block 7. The two nitrogen springs 8 are installed in the spring holes 71 on both sides. After being installed in the large sliding block 2, the nitrogen springs 8 contact the large sliding block 2. Limiting grooves 72 compatible with the limiting rods 9 are provided on both sides of the sliding fixed block 7. The limiting grooves 72 are opened along the forward and backward moving directions. In the initial position, the limiting rod 9 is located at the rear end of the limiting grooves 72. When the sliding fixed block 7 retreats, the limiting rod 9 is fixed, and the limiting grooves 72 follow the retreat until the limiting rod 9 and the limiting grooves 72 are limited to prevent the sliding fixed block 7 from continuing to retreat, and the movement stops.

[0022] The installation and movement process of the present invention is as follows: first, the T-block 31 at the lower part of the T-shaped inclined top 3 is installed in the T-slot 41, and then the wear-resistant plate 5 is fixed with screws and the rear end of the T-shaped inclined top 3, and then the rear end of the T-shaped sliding block 4 is fixed in the middle of the sliding fixing block 7 with screws. At this time, the bottom of the T-shaped sliding block 4 is lower than the bottom of the sliding fixing block 7, and then the nitrogen spring 8 is installed in the spring holes 71 on both sides of the front end of the sliding fixing block 7, and then the above assembled parts are installed in the hollow groove 21 in the middle of the large sliding block 2, and then the limiting rod 9 is inserted into the holes 22 on both sides of the large sliding block 2 and the limiting rod 9 passes through the large sliding block 2. After the top end of the limiting rod 9 is inserted into the rear end of the limiting groove 72, finally the pressing plate 6 is installed in the large sliding block 2 and fixed. In this way, the assembly is completed. At this time, the front side surface of the large sliding block 2 and the front side surfaces of the T-shaped inclined top 3 and the T-shaped sliding block 4 are in contact with the product 1 together, and the upper end of the front side of the T-shaped inclined top 3 is located in the groove 11 of the product 1. When the mold is opened, the two nitrogen springs 8 pop out on the large slider 2, thereby pushing the sliding fixed block 7 and the T-shaped sliding block 4 backward in the large slider 2 in the opposite direction. Since the T-block 31 at the bottom of the T-shaped inclined top 3 is slidably installed in the T-slot 41 at the top front of the T-shaped sliding block 4, the T-shaped sliding block 4 retreats, causing the T-shaped inclined top 3 to move downward. The T-shaped sliding block 4 continues to retreat until the sliding fixed block 7 is limited by the two limit rods 9 and stops moving. At this time, the upper side of the front end of the T-shaped inclined top 3 has been separated from the groove 11 on the product 1, and the T-shaped inclined top 3 moves downward by a distance a, a is 14mm, and finally the large slider 2 is driven by the cylinder to retreat 100mm. At this time, the large slider 2 drives the internal components to retreat together, completing the demoulding of all undercuts of the product 1, thereby withdrawing all undercuts in the product 1.

[0023] When there are other undercuts in the movement direction of the slider in the product 1, the present invention can solve the problems of complex molds, large space occupied, difficult disassembly and maintenance, and high costs, avoid wasting the cost of mold production and manufacturing, and avoid expensive costs such as the cost of mold modification in the later stage.

[0024] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slider inclined top inner draw structure, characterized in that: The invention comprises a large slider (2), a T-shaped inclined top (3), a T-shaped sliding block (4), a wear-resistant plate (5), a pressure plate (6), a sliding fixed block (7), two nitrogen springs (8) and two limit rods (9), wherein the T-shaped inclined top (3), the T-shaped sliding block (4), the wear-resistant plate (5), the pressure plate (6), the sliding fixed block (7), the two nitrogen springs (8) and the two limit rods (9) are all installed in the large slider (2), the front part of the top of the T-shaped sliding block (4) is inclined downward and the rear part is a horizontal plane, the bottom of the T-shaped inclined top (3) is slidably installed on the front part of the top of the T-shaped sliding block (4), the rear end of the T-shaped inclined top (3) is fixed to the wear-resistant plate (5), and the rear end of the T-shaped sliding block (4) is fixed to the sliding fixed block (7). In the middle of the front end of the fixed block (7), the two nitrogen springs (8) are installed on both sides of the front end of the sliding fixed block (7), the pressure plate (6) is fixed on the large slider (2) and its bottom surface contacts the horizontal surface of the T-shaped sliding block (4), and its front surface contacts the rear surface of the wear-resistant plate (5), the two limit rods (9) are inserted into both sides of the large slider (2) and their top ends are inserted into both sides of the sliding fixed block (7), when the mold is opened, the two nitrogen springs (8) pop out on the large slider (2), thereby pushing the sliding fixed block (7) and the T-shaped sliding block (4) backward in the large slider (2), so that the T-shaped inclined top (3) moves downward until the sliding fixed block (7) is limited by the two limit rods (9) and stops moving.

2. The slider inclined top inner withdrawal structure according to claim 1 is characterized in that: The middle of the large sliding block (2) is provided with a hollow groove (21) adapted to the T-shaped inclined top (3), the T-shaped sliding block (4), the wear-resistant plate (5), the pressure plate (6) and the sliding fixed block (7), and the two sides of the large sliding block (2) are provided with holes (22) adapted to the limit rods (9).

3. The slider inclined top inner withdrawal structure according to claim 2 is characterized in that: The T-shaped inclined top (3) is inclined toward the front and below, the bottom of the T-shaped inclined top (3) is provided with a T-shaped block (31), the front of the top of the T-shaped sliding block (4) is provided with a T-shaped slot (41) adapted to the T-shaped block (31), and the length of the T-shaped block (31) is longer than that of the T-shaped slot (41).

4. The slider inclined top inner withdrawal structure according to claim 3 is characterized in that: The front ends of the sliding fixed block (7) are provided with spring holes (71) adapted to the nitrogen spring (8), and the two sides of the sliding fixed block (7) are provided with limiting grooves (72) adapted to the limiting rods (9), and the limiting grooves (72) are provided along the forward and backward movement directions.

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