Slide block mechanism for demoulding small-aperture slender hole workpiece
By designing a slider release mechanism for small-bore elongated hole workpieces, the double slider mechanism and spring mechanism are used to solve the problem of demolding difficulties during injection molding, smooth mold release is achieved, and product quality is improved and pass rate.
Patent Information
- Application Number
- CN202420998789.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the injection molding process, it is difficult to release the workpiece with small hole diameter and elongated holes, causing friction between the workpiece and the mold, affecting quality or causing damage.
A slider mechanism is designed, including a first slider, a second slider, a spring, a sleeve, a delay hand and a locking block. The separate action of the sleeve and a delay hand is realized through the double slider mechanism to provide reverse Rely on force to prevent the workpiece from squirting and ensuring smooth mold release.
It effectively solves the problem of difficult molding of workpieces with small-bore size elongated holes, improves product qualification rate and quality, and has a simple process and low manufacturing cost.
Smart Images
Figure CN222521944U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection molding, in particular to a slider mechanism for demoulding a workpiece with a small-diameter slender hole. Background Art
[0002] When using injection molds to produce plastic products, sometimes there are long holes with small diameters but deep holes on the products, so a needle-shaped insert is needed to occupy the position in the cavity, that is, to form the long hole. When this structure is demolded, the bonding force between the slender needle-shaped insert and the workpiece is relatively large, so there is a problem of difficulty in demolding, causing the workpiece to move with the movement of the needle-shaped insert. Once the above situation occurs, friction between the workpiece and the mold will occur at the least, affecting the appearance quality of the workpiece, or even causing damage to the workpiece.
[0003] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention
[0004] The utility model aims to solve the above-mentioned deficiencies in the prior art and proposes a slide block mechanism for demoulding a workpiece with a small-diameter slender hole, which has a simple structure, ingenious design, and reasonable layout and can ensure smooth demoulding action and protect the workpiece from damage.
[0005] The technical solution of the utility model is: a slider mechanism for demoulding a workpiece with a small aperture and an elongated hole, characterized in that: the slider mechanism comprises a first slider 1, a pair of first springs 2 are arranged on the side of the first slider 1 facing the cavity, a slide groove 3 is provided on the slider 1, a second slider 4 is slidably connected in the slide groove 3, a pair of second springs 5 are arranged on the side of the second slider 4 facing the cavity, the free end of the second spring 5 contacts the inner wall of the slide groove 3, a sleeve 6 is arranged on the side of the second slider 4 facing the cavity, the sleeve 6 is movably connected in a sleeve slideway provided in an insert 7, and the insert 7 is arranged on the first slider 1,
[0006] The first slider 1 is fixedly provided with a driving block 8, and the driving block 8 is provided with a delay needle 9, and the delay needle 9 is movably connected in the sleeve 6. At the same time, a passive driving inclined surface 10 is provided on the side of the driving block 8 away from the cavity.
[0007] A locking block 11 is provided to match the first slider 1, and an active driving inclined surface 12 matching the passive driving inclined surface 10 is also provided on the locking block 11. A countersunk hole 13 is provided on the active driving inclined surface 12, and the inner wall of the countersunk hole 13 is a vertical positioning surface 14. A positioning column 15 is provided on the side of the second slider 4 away from the cavity. In the mold closing state, the end of the positioning column 15 contacts the positioning surface 14.
[0008] Compared with the prior art, the utility model has the following advantages:
[0009] This type of structural form of the demoulding slider mechanism for workpieces with small-diameter slender holes has a simple structure, ingenious design, and reasonable layout. It is designed to solve the problem that some workpieces with small-diameter slender holes are difficult to demould, and a special structure is designed. It uses a double slider mechanism to realize the separate actions of the sleeve and the delay needle. When the delay needle is pulled out of the slender hole formed on the workpiece, the sleeve will resist the workpiece and provide it with a counter-force to prevent the workpiece from moving with the action of the delay needle, thereby ensuring that the delay needle can be demoulded smoothly. This slider mechanism can improve the qualified rate of such products and improve product quality. At the same time, its manufacturing process is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of a workpiece to be processed in an embodiment of the utility model.
[0011] Figure 2 It is an exploded view of the components of the embodiment of the utility model.
[0012] Figure 3 It is a structural schematic diagram of an embodiment of the utility model (mold closing state).
[0013] Figure 4 It is a structural schematic diagram of an embodiment of the utility model (mold opening state). DETAILED DESCRIPTION
[0014] The specific implementation of the present utility model will be described below in conjunction with the accompanying drawings. Figures 1 to 4 As shown: a slider mechanism for demoulding a workpiece with a small aperture and an elongated hole, comprising a first slider 1, a pair of first springs 2 are arranged on the side of the first slider 1 facing the cavity, a slide groove 3 is provided on the slider 1, a second slider 4 is slidably connected in the slide groove 3, a pair of second springs 5 are arranged on the side of the second slider 4 facing the cavity, the free end of the second spring 5 contacts the inner wall of the slide groove 3, a sleeve 6 is arranged on the side of the second slider 4 facing the cavity, the sleeve 6 is movably connected in a sleeve slideway provided in an insert 7, and the insert 7 is arranged on the first slider 1,
[0015] The first slider 1 is fixedly provided with a driving block 8, and the driving block 8 is provided with a delay needle 9, and the delay needle 9 is movably connected in the sleeve 6. At the same time, a passive driving inclined surface 10 is provided on the side of the driving block 8 away from the cavity.
[0016] A locking block 11 is provided to match the first slider 1, and an active driving inclined surface 12 matching the passive driving inclined surface 10 is also provided on the locking block 11. A countersunk hole 13 is provided on the active driving inclined surface 12, and the inner wall of the countersunk hole 13 is a vertical positioning surface 14. A positioning column 15 is provided on the side of the second slider 4 away from the cavity. In the mold closing state, the end of the positioning column 15 contacts the positioning surface 14.
[0017] The working process of the slider mechanism for demoulding a workpiece with a small aperture and an elongated hole according to the embodiment of the utility model is as follows: in the mold closing state, the delay needle 9 is inserted into the sleeve 6, the sleeve 6 is inserted into the insert 7, and the end of the delay needle 9 protrudes from the sleeve 6, occupying a position in the mold cavity to form an elongated hole on the workpiece.
[0018] When the mold is opened, the locking block 11 moves upward, and the active driving inclined surface 12 and the passive driving inclined surface 10 move relative to each other. At this time, there is a movement space in the horizontal direction for the first slider 1, so it will move in the direction away from the cavity under the action of the first spring 2, and the insert 7 drives the delay needle 9 to retreat; in this process, although the locking block 11 moves upward, the positioning surface 14 thereon has no displacement in the horizontal direction, so the positioning column 15 pressed on the positioning surface 14 will not retreat with the first slider 11, that is, when the first slider 11 retreats, the second slider 4 does not move relative to the cavity (the second spring 5 is compressed in this process), that is, the sleeve 6 does not move relative to the cavity, and the delay needle 9 retreats relative to the cavity. In the process of pulling the delay needle 9 out of the elongated hole on the workpiece, the sleeve 6 presses against the workpiece to prevent the workpiece from moving with the delay needle 9, thereby ensuring that the delay needle 9 can be smoothly demoulded from the workpiece;
[0019] The locking block 11 continues to move upward, and when the positioning surface 14 is out of contact with the positioning column 15, under the action of the second spring 5, the second slider 11 retreats relative to the first slider 1 and the cavity, and the end of the sleeve 6 is out of contact with the workpiece, thus completing a complete demoulding operation;
[0020] When the mold is closed, the above mechanism returns to the initial position under the action of the locking block 11, waiting for the next injection molding operation.
Claims
1. A slider mechanism for demoulding a workpiece with a small-diameter and elongated hole, characterized in that: The slider mechanism comprises a first slider (1), a pair of first springs (2) being arranged on the side of the first slider (1) facing the cavity, a slide groove (3) being provided on the slider (1), a second slider (4) being slidably connected in the slide groove (3), a pair of second springs (5) being arranged on the side of the second slider (4) facing the cavity, the free ends of the second springs (5) being in contact with the inner wall of the slide groove (3), a sleeve (6) being arranged on the side of the second slider (4) facing the cavity, the sleeve (6) being movably connected in a sleeve slideway provided in an insert (7), and the insert (7) being arranged on the first slider (1). A driving block (8) is fixedly arranged on the first sliding block (1), a delay needle (9) is arranged on the driving block (8), the delay needle (9) is movably connected in the sleeve (6), and a passive driving inclined surface (10) is arranged on the side of the driving block (8) away from the cavity. A locking block (11) is provided to match the first slider (1), and an active driving inclined surface (12) matching the passive driving inclined surface (10) is also provided on the locking block (11). A countersunk hole (13) is provided on the active driving inclined surface (12), and the inner wall of the countersunk hole (13) is a vertical positioning surface (14). A positioning column (15) is provided on the side of the second slider (4) away from the cavity. In the mold closing state, the end of the positioning column (15) contacts the positioning surface (14).