Slider device for multi-directional undercut demoulding
By designing a multi-directional inverted slide device, the combination of the inclined chute and square pin guide slider on the slide insert is achieved smoothly demolding of plastic products with multi-directional and small distance inverted, solving the existing mold The complex structure and high cost problems simplify mold design and save space.
Patent Information
- Application Number
- CN202110299176.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-03-20
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2041-03-20
AI Technical Summary
When existing plastic molds deal with plastic products with multiple inverted plastics, the mold structure is complex, the size is large, and the cost is high. Due to space limitations, the smooth demolding of small distance inverted mold cannot be achieved, resulting in high production costs.
Design a multi-directional inverted slide device, including fixed template, moving template, slider, oblique push rod and square pin, through the angle between the inclined groove on the slider insert and the square pin The guide chute on the guide slider realizes multi-directional movement of the slider and the oblique push rod, and cooperates with the external force of the oil cylinder to achieve smooth mold release of multi-directional inverted pressing.
The smooth demolding of multi-directional inverted molds is achieved, which saves space, simplifies the mold structure and reduces production costs.
Smart Images
Figure CN115107241B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of movable model parts used for injection molding, in particular to a slider device for multi-directional undercut demoulding and a use method thereof. Background Art
[0002] Plastic products are widely used in the automotive industry, home appliance industry, chemical industry and people's daily necessities. Plastic products are mainly mass-produced through molds. For some complex plastic products with multiple undercuts, the mold is generally designed with a separate undercut structure for each undercut, which makes the mold structure complex and the mold size large, so the mold cost is high. Some plastic products have many undercuts and the undercuts are very close. Due to space limitations, the current mold structure cannot realize undercut removal. It is necessary to change the product design, add a plastic product or add subsequent processes to realize the product function, resulting in high production costs. Summary of the invention
[0003] In order to overcome the defects of the prior art and provide a model component with a simple structure and smooth demoulding, the present invention discloses a slider device for multi-directional undercut demoulding and a use method thereof.
[0004] The present invention achieves the purpose of the invention through the following technical solutions:
[0005] A slider device for multi-directional undercut demoulding comprises a fixed mold plate, a fixed mold insert and a slider locking block. The fixed mold plate is provided with two positioning grooves. The fixed mold insert and the slider locking block are respectively arranged in one of the positioning grooves and fixed with bolts.
[0006] The invention is characterized in that it also includes a movable mold plate, a movable mold insert, a slider, a slider insert, an inclined push rod, a square pin, an inclined push rod protection block, a square pin guide slider and a slider pressure plate.
[0007] The movable template is provided with two positioning grooves, the movable mold insert and the slider pressure plate are respectively arranged in one of the positioning grooves and are fixed with bolts, the slider pressure plate and the movable template form a guide groove, the slider and the slider insert both slide in the guide groove, the slider is provided with a positioning groove, and the slider insert is fixed to the slider by bolts; the slider insert is provided with two inclined grooves, two inclined push rods slide in one of the inclined grooves respectively, and the inclined push rods and the slider inserts are slidably matched; the inclined push rods are provided with square holes, two square pins are respectively inserted in one of the square holes, and the inclined push rods and the square pins are interference matched; the movable template is provided with a positioning groove, the square pin guide slider is interference matched with the movable template and is fixed by screws The square pin guide slider has three guide slots, two of which are parallel to each other, and the other guide slot is perpendicular to the two parallel guide slots. Two square pins slide in one of the two parallel guide slots respectively, and the square pins and the square pin guide slider slide in cooperation. The slider is provided with an avoidance slot, in which the oblique push rod and the square pin slide. The slider is provided with two positioning slots, and two oblique push rods are respectively arranged in one positioning slot and fixed by bolts. The oblique push rod protection block is fixed to the slider by bolts. The slider insert is provided with an oblique slot, and an angle is formed between the oblique slot and the slider insert, and the oblique push rod slides in the oblique slot of the slider insert.
[0008] The multi-directional undercut demoulding slider device is characterized in that the angle between the inclined groove on the slider insert and the slider insert is 5° to 30°.
[0009] The method for using the multi-directional undercut demoulding slider device is characterized by being implemented in sequence according to the following steps:
[0010] i. Mold closing: The slider locking block squeezes the slider tightly and the slider cannot move;
[0011] ii. Mold opening: the slider locking block leaves the slider, and then the external force of the cylinder drives the slider and the slider insert to move to the right, so that the slider insert is disengaged; the square pin guide slider is fixedly located on the fixed template, and the square pin guide slider blocks the square pin and the oblique push rod from moving to the right. The oblique push rod slides in the oblique groove of the slider insert, thereby pushing the square pin to slide in the vertical guide groove of the square pin guide slider, so that the oblique push rod is disengaged; when the square pin completely enters the parallel horizontal guide groove position of the square pin guide slider, the square pin begins to slide to the right in the horizontal guide groove of the square pin guide slider, and the square pin, oblique push rod, slider, and slider insert are together When the mold is closed, the slider, the slider insert, the square pin and the oblique push rod move to the left together under the drive of the external force of the cylinder, and the square pin slides to the left in the horizontal guide groove of the square pin guide slider; when the square pin completely enters the vertical guide groove position of the square pin guide slider, the square pin and the oblique push rod stop sliding left and right together, and start to slide in the vertical guide groove of the square pin guide slider. At this time, the slider and the slider insert are still moving to the left under the action of the external force of the cylinder, and the slider and the slider insert move together to the position of the movable mold insert and stop moving; then the slider locking block locks the slider to return to the closed mold state.
[0012] The present invention realizes the change of the left and right movement of the slider and the slider insert into the up and down movement of the oblique push rod by the inclined groove on the slider insert and the movement direction of the slider and the slider insert, and realizes the multi-directional undercut removal. The present invention can realize the smooth demoulding of the multi-directional undercut mold, and can also realize the demoulding of multiple undercuts with a small distance. The structure is simple and space-saving.
[0013] The present invention has the following beneficial effects:
[0014] 1. Achieve smooth demoulding of multi-directional undercut molds.
[0015] 2. Achieve smooth demoulding of molds with small undercuts.
[0016] 3. Simple structure and small space occupation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a front view of the present invention,
[0018] Figure 2 It is an assembly diagram of the slider, the slider insert, the oblique push rod, the square pin, the oblique push rod protection block, the square pin guide slider and the slider pressure plate in the present invention.
[0019] Figure 3 It is a schematic diagram of the assembly of the oblique push rod, the square pin and the square pin guide sliding block in the present invention. DETAILED DESCRIPTION
[0020] The present invention is further described below by means of specific examples. Example
[0021] A slider device for multi-directional undercut demoulding, comprising a fixed mold plate 1, a fixed mold insert 2, a slider locking block 3, a movable mold plate 4, a movable mold insert 5, a slider 6, a slider insert 7, an oblique push rod 8, a square pin 9, an oblique push rod protection block 10, a square pin guide slider 11 and a slider pressure plate 12, as shown in FIG. Figure 1 to Figure 3 As shown, the specific structure is:
[0022] The fixed template 1 is provided with two positioning grooves, the fixed mold insert 2 and the slider locking block 3 are respectively arranged in one of the positioning grooves and fixed with bolts, the movable template 4 is provided with two positioning grooves, the movable mold insert 5 and the slider pressure plate 12 are respectively arranged in one of the positioning grooves and fixed with bolts, the slider pressure plate 12 and the movable template 4 form a guide groove, the slider 6 and the slider insert 7 both slide in the guide groove, the slider 6 is provided with a positioning groove, the slider insert 7 is fixed to the slider 6 by bolts; the slider insert 7 is provided with two oblique grooves, two oblique push rods 8 slide in one of the oblique grooves respectively, and the oblique push rod 8 and the slider insert 7 are slidably matched; the oblique push rod 8 is provided with a square hole, and two square pins 9 are respectively inserted in one of the square holes, and the oblique push rod 8 and the square pin 9 are interference matched; the movable template 4 is provided with There is a positioning groove, the square pin guide slider 11 is interference fit with the movable template 4 and fixed by bolts; the square pin guide slider 11 has three guide grooves, two of which are parallel to each other, and the other guide groove is perpendicular to the two parallel guide grooves, and the two square pins 9 slide in one of the two parallel guide grooves respectively, and the square pins 9 slide with the square pin guide slider 11; the slider 6 is provided with an air avoidance groove, and the oblique push rod 8 and the square pin 9 both slide in the air avoidance groove; the slider 6 is provided with two positioning grooves, and the two oblique push rods 8 are respectively arranged in one positioning groove and fixed by bolts, the oblique push rod protection block 10 is fixed to the slider 6 by bolts, and the slider insert 7 is provided with an oblique groove, and an angle is formed between the oblique groove and the slider insert 7, and the oblique push rod 8 slides in the oblique groove of the slider insert 7.
[0023] In this embodiment, the angle between the inclined groove on the slider insert 7 and the slider insert 7 is 5° to 30°.
[0024] When this embodiment is used, the following steps are implemented in sequence:
[0025] i. Mold closing: The slider locking block 3 squeezes the slider 6, and the slider 6 cannot move;
[0026] ii. Mold opening: the slider locking block 3 leaves the slider 6, and then the external force of the cylinder drives the slider 6 and the slider insert 7 to move to the right, so that the slider insert 7 is disengaged; the square pin guide slider 11 is fixedly located on the fixed mold plate 1, and the square pin guide slider 11 blocks the square pin 9 and the oblique push rod 8 from moving to the right, and the oblique push rod 8 slides in the oblique groove of the slider insert 7, thereby pushing the square pin 9 to slide in the vertical guide groove of the square pin guide slider 11, so that the oblique push rod 8 is disengaged; when the square pin 9 completely enters the parallel horizontal guide groove position of the square pin guide slider 11, the square pin 9 starts to slide to the right in the horizontal guide groove of the square pin guide slider 11, and the square pin 9, the oblique push rod 8, the slider 6, and the slider insert When the mold is closed, the slider 6, the slider insert 7, the square pin 9 and the oblique push rod 8 move to the left together under the drive of the external force of the cylinder, and the square pin 9 slides to the left in the horizontal guide groove of the square pin guide slider 11; when the square pin 9 completely enters the vertical guide groove position of the square pin guide slider 11, the square pin 9 and the oblique push rod 8 stop sliding left and right together, and start to slide in the vertical guide groove of the square pin guide slider 11. At this time, the slider 6 and the slider insert 7 are still moving to the left under the action of the external force of the cylinder, and the slider 6 and the slider insert 7 move together to the position of the movable mold insert 5 and stop moving; then the slider locking block 3 locks the slider 6 to return to the closed mold state.
[0027] In this embodiment, the inclined groove on the slider insert 7 has an angle with the movement direction of the slider 6 and the slider insert 7, and the guide groove on the square pin guide slider 11 controls the movement direction of the inclined push rod 8, so that the left and right movement of the slider 6 and the slider insert 7 is changed to the up and down movement of the inclined push rod 8, thereby realizing multi-directional undercut removal. This embodiment can realize the smooth demoulding of multi-directional undercut molds, and can also realize the demoulding of multiple undercuts with a small distance. The structure is simple and space-saving.
Claims
1. A slider device for multi-directional undercut demoulding, comprising a fixed mold plate (1), a fixed mold insert (2) and a slider locking block (3), wherein the fixed mold plate (1) is provided with two positioning grooves, the fixed mold insert (2) and the slider locking block (3) are respectively arranged in one of the positioning grooves and fixed by bolts, Its characteristics are: It also includes a movable die plate (4), a movable die insert (5), a slider (6), a slider insert (7), an inclined push rod (8), a square pin (9), an inclined push rod protection block (10), a square pin guide slider (11) and a slider pressure plate (12). The movable platen (4) is provided with two positioning grooves, the movable mold insert (5) and the slider pressure plate (12) are respectively arranged in one of the positioning grooves and are fixed by bolts, the slider pressure plate (12) and the movable platen (4) form a guide groove, the slider (6) and the slider insert (7) both slide in the guide groove, the slider (6) is provided with a positioning groove, the slider insert (7) and the slider (6) are fixed by bolts; the slider insert (7) is provided with two inclined grooves, two inclined push rods (8) slide in one of the inclined grooves, and the inclined push rod (8) and the slider insert (7) are slidably matched; the inclined push rod (8) is provided with a square hole, two square pins (9) are respectively inserted in one of the square holes, and the inclined push rod (8) and the square pin (9) are interference fit; the movable platen (4) is provided with a positioning groove, the square pin guide slider (11) and the movable platen (4) are fixed by bolts; ) interference fit and fixed by bolts; the square pin guide slider (11) has three guide slots, two of which are parallel to each other, and the other guide slot is perpendicular to the two parallel guide slots, and the two square pins (9) slide in one of the two parallel guide slots respectively, and the square pins (9) and the square pin guide slider (11) slide in cooperation; the slider (6) is provided with a clearance groove, and the inclined push rod (8) and the square pin (9) both slide in the clearance groove; the slider (6) is provided with two positioning grooves, and the two inclined push rods (8) are respectively arranged in one positioning groove and fixed by bolts, the inclined push rod protection block (10) and the slider (6) are fixed by bolts, and the slider insert (7) is provided with an inclined groove, and an angle is formed between the inclined groove and the slider insert (7), and the inclined push rod (8) slides in the inclined groove of the slider insert (7).
2. The slider device for multi-directional undercut demoulding according to claim 1, characterized in that: The angle between the inclined groove on the slider insert (7) and the slider insert (7) is between 5° and 30°.
3. The method for using the slider device for multi-directional undercut demoulding according to claim 1 or 2, characterized in that: Follow the steps below to implement: ① Mold closing: The slider locking block (3) squeezes the slider (6) tightly, and the slider (6) cannot move; ② Mold opening: the slider locking block (3) leaves the slider (6), and then the external force of the cylinder drives the slider (6) and the slider insert (7) to move to the right, so that the slider insert (7) is disengaged; the square pin guide slider (11) is fixedly located on the fixed mold plate (1), and the square pin guide slider (11) blocks the square pin (9) and the inclined push rod (8) from moving to the right, and the inclined push rod (8) slides in the inclined groove of the slider insert (7), thereby pushing the square pin (9) to slide in the vertical guide groove of the square pin guide slider (11), so that the inclined push rod (8) is disengaged; when the square pin (9) completely enters the parallel horizontal guide groove position of the square pin guide slider (11), the square pin (9) starts to slide to the right in the horizontal guide groove of the square pin guide slider (11), and the square pin (9), the inclined push rod (8), the slider (6), The slider insert (7) moves to the right together; when the mold is closed, it moves in the opposite direction. Driven by the external force of the cylinder, the slider (6), the slider insert (7), the square pin (9) and the inclined push rod (8) move to the left together, and at the same time, the square pin (9) slides to the left in the horizontal guide groove of the square pin guide slider (11); when the square pin (9) completely enters the vertical guide groove position of the square pin guide slider (11), the square pin (9) and the inclined push rod (8) stop sliding left and right together and start to slide in the vertical guide groove of the square pin guide slider (11). At this time, the slider (6) and the slider insert (7) are still moving to the left under the external force of the cylinder. The slider (6) and the slider insert (7) move together to the position of the movable mold insert (5) and stop moving; then the slider locking block (3) locks the slider (6) to restore to the closed mold state.
Citation Information
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