Sliding block mechanism capable of delaying mold closing and injection mold

Abstract

The utility model provides a sliding block mechanism capable of delaying mold closing and an injection mold, the sliding block mechanism capable of delaying mold closing comprises a sliding seat and a sliding block, and the sliding seat and the sliding block are both limited to slide back and forth along a single direction; the mold opening mechanism further comprises an elastic limiting buckle, and the sliding block is limited by the elastic limiting buckle when located at the mold opening in-place position so that the sliding block can be kept fixed without external force. The sliding seat and the sliding block are in delayed limiting fit, so that the sliding seat and the sliding block are limited after the sliding seat moves for a certain distance relative to the sliding block; the sliding seat continuously moves after being limited with the sliding block to drive the elastic limiting buckle to break away from the limitation on the sliding block, so that the sliding seat drives the sliding block to synchronously move; and the problem of shoveling a steel sheet due to the fact that the sliding block is closed in advance can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a delayed mold closing slider mechanism and an injection mold. Background Art

[0002] Injection molding is a processing method used in the mass production of certain components. Specifically, the molten material is injected into the mold cavity under high pressure. After cooling and solidification, the molded product is obtained. The injection mold is the tool used in injection molding. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the shape of the object by changing the physical state of the molded material. In modern manufacturing, the molding of product components almost all requires the use of molds.

[0003] When manufacturing products with holes or grooves on the sides, it is necessary to set a molding slider laterally to form the holes or grooves on the product's sides. This requires a laterally movable slider mechanism to achieve this. In addition, in the injection molding of some products (such as mobile phone front shells), it is necessary to place a steel sheet in the mold beforehand for molding. During the manufacturing process, it was found that if the laterally sliding slider is moved forward to close the mold without the steel sheet being fixed by the front and rear molds, it is easy to scrape the steel sheet and cause it to shift. Therefore, it is necessary to design a mechanism that can delay the slider closing the mold. Utility Model Content

[0004] Therefore, in order to solve the above problems, the present invention provides a slider mechanism with delayed mold closing and an injection mold.

[0005] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0006] A slider mechanism for delayed mold closing comprises a slide and a slider, both of which are restricted to sliding back and forth in a single direction; further comprising an elastic limit buckle, by which the slider is restricted when in the mold opening position, so that the slider remains fixed in the absence of external force; the slide and the slider form a delayed limit fit, so that the slide forms a limit with the slider only after moving a certain distance relative to the slider; the continued movement of the slide after forming a limit with the slider drives the elastic limit buckle to break away from the restriction on the slider, thereby the slide drives the slider to move synchronously.

[0007] Furthermore, the elastic limiting buckle includes a first glass bead insert and a first elastic member, and a slider abutment groove is provided at the bottom of the slider. The first glass bead insert is pressed against the slider abutment groove of the slider under the action of the first elastic member to keep the slider stationary; the continued sliding of the sliding seat and the slider after limiting forces the first glass bead insert to overcome the elastic force of the first elastic member and disengage from the slider abutment groove.

[0008] Furthermore, there are two slider abutment grooves at the bottom of the slider, and the two slider abutment grooves are spaced apart along the sliding direction of the slider. When the slider is in the mold opening position, the first glass bead insert is abutted against one of the slider abutment grooves, and when the slider is in the mold closing position, the first glass bead insert is abutted against the other slider abutment groove.

[0009] Furthermore, the slider abutment groove has an inverted "V"-shaped structure, the top of the first glass bead insert is a triangular tip, and the triangular tip of the first glass bead insert is pressed against the slider abutment groove having an inverted "V"-shaped structure.

[0010] Furthermore, a mounting blind hole is provided at the bottom of the first glass bead insert, and the first elastic member is a spring, which is assembled in the mounting blind hole of the first glass bead insert.

[0011] Furthermore, two slide abutment grooves are provided at the bottom of the slide, and the slide also includes a second glass bead insert and a second elastic member. The second glass bead insert is pressed against the slide abutment groove under the action of the second elastic member to keep the slide fixed when there is no external force; and when the slide is in the mold opening position, the second glass bead insert is pressed against one of the slide abutment grooves, and when the slide is in the mold closing position, the second glass bead insert is pressed against the other slide abutment groove.

[0012] Furthermore, the slide abutment groove is an inverted "V"-shaped structure, and the top of the second glass bead insert is a triangular tip, and the triangular tip of the second glass bead insert is pressed against the slide abutment groove of the inverted "V"-shaped structure.

[0013] Furthermore, a mounting blind hole is provided at the bottom of the second glass bead insert, and the second elastic member is a spring, which is assembled in the mounting blind hole of the second glass bead insert.

[0014] Furthermore, a limiting groove is provided on the slider, and a protrusion with a size smaller than the limiting groove is provided on the slide. The protrusion fits in the limiting groove to achieve delayed limiting fit between the slide and the slider. The movable range of the protrusion in the limiting groove is the moving range of the slide relative to the slider.

[0015] An injection mold comprises at least the above-mentioned delayed mold closing slider mechanism.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] When the slider is in the mold opening position, it is restricted by the elastic limit buckle, so that the slider remains fixed in the absence of external force, and the slide and the slider form a delayed limit fit, so that the slide forms a limit with the slider only after moving a certain distance relative to the slider; in the initial stage of mold closing, the movement of the slide toward the mold closing position will not drive the slider to move, and the slider remains fixed under the restriction of the elastic limit buckle, which can effectively avoid the problem of scraping steel sheets caused by the slider closing the mold first.

[0018] After the slide moves a certain distance toward the mold closing position, the slide and the slider form a limit, and then the continued movement of the slide drives the elastic limit buckle to break away from the restriction on the slider, and then drives the slider to move synchronously, and finally achieve mold closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a three-dimensional schematic diagram of the slider mechanism for delayed mold closing in the embodiment;

[0020] Figure 2 FIG2 is a partial structural exploded schematic diagram of the slider mechanism for delayed mold closing in an embodiment;

[0021] Figure 3 Shown is a cross-sectional view of the slider mechanism for delayed mold closing in an embodiment Figure 1 ;

[0022] Figure 4 Shown is a cross-sectional view of the slider mechanism for delayed mold closing in an embodiment Figure 2 ;

[0023] Figure 5 Shown is a cross-sectional view of the slider mechanism for delayed mold closing in an embodiment Figure 3 . DETAILED DESCRIPTION

[0024] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0025] In the description of the present invention, terms such as "up", "down", "left", "right", "front", and "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0026] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1 to 5 As shown, the present embodiment provides a delayed mold closing slider mechanism, comprising a slide 20 and a slider 10, wherein the slide 20 and the slider 10 are both restricted to slide back and forth in a single direction; as in the present embodiment, the slide 20 and the slider 10 are both restricted to slide back and forth in a single direction. Figures 3 to 5 The left-right reciprocating sliding movement is defined as the mold closing direction and the right-right movement as the mold opening direction. The slide 20 is located on the right side of the slider 10. The slide 20 forms a delayed limit fit with the slider 10, so that the slide 20 moves a certain distance relative to the slider 10 before it forms a limit fit with the slider 10.

[0028] It also includes an elastic limit buckle 30. When the slider 10 is in the mold opening position, it is restricted by the elastic limit buckle 30 so that the slider 10 remains fixed without external force. With this arrangement, in the initial stage of mold closing, the movement of the slide 20 toward the mold closing position will not drive the slider 10 to move. The slider 10 remains fixed under the restriction of the elastic limit buckle 30, which can effectively avoid the problem of the slider 10 closing the mold first and causing the steel sheet to be scraped. After the slide 20 moves a certain distance toward the mold closing position, the slide 20 and the slider 10 form a limit, and then the continued movement of the slide 20 drives the elastic limit buckle 30 to break away from the restriction on the slider 10, and then drives the slider 10 to move synchronously, and finally achieves mold closing. Specifically, Figure 3 As shown, the slider 10 is in the mold opening position and is limited by the elastic limit buckle 30, and the slide 20 is Figure 3 Slide left to Figure 4 During the process of position, the slider 10 remains stationary and the slide 20 reaches Figure 4 After the position shown is reached, the slider 10 forms a limit position. After that, the slider 20 continues to slide to the left, driving the slider 10 to move synchronously, and finally reaches the position shown in FIG. Figure 5 The mold is shown in the closed position.

[0029] Specifically, the elastic limit buckle 30 includes a first glass bead insert 31 and a first elastic member 32. A slider abutting groove 11 is provided at the bottom of the slider 10. The first glass bead insert 31, under the action of the first elastic member 32, abuts against the slider abutting groove 11 of the slider 10, thereby holding the slider 10 stationary. After the slider 20 and the slider 10 are limited, continued sliding forces the first glass bead insert 31 to overcome the elastic force of the first elastic member 32 and disengage from the slider abutting groove 11. This releases the constraint imposed by the elastic limit buckle 30 on the slider 10, allowing the slider 10 to move synchronously with the slider 20. More specifically, the slider abutting groove 11 is in an inverted V-shaped structure. The top of the first glass bead insert 31 is a triangular tip. The triangular tip 311 of the first glass bead insert 31 abuts against the inverted V-shaped slider abutting groove 11. This creates an oblique guide structure between the slider abutting groove 11 and the top of the first glass bead insert 31. After the slide 20 and the slider 10 are positioned, continued mold closing sliding of the slide 20 applies a leftward thrust to the slider 10. This forces the first glass bead insert 31, in cooperation with the slider abutment groove 11, to overcome the elastic force of the first elastic member 32 and move downward, thereby disengaging from the slider abutment groove 11. This design is simple in structure and easy to operate, and does not require additional release operations.

[0030] Furthermore, in this embodiment, the number of the slider abutting grooves 11 at the bottom of the slider 10 is two, and the two slider abutting grooves 11 are spaced apart along the sliding direction of the slider 10, and when the slider 10 is in the mold opening position, the first glass bead insert 31 abuts against one of the slider abutting grooves 11 (specifically, the left slider abutting groove 11, as shown in FIG. Figure 3 and Figure 4 As shown in FIG, when the slider 10 is in the mold closing position, the first glass bead insert 31 abuts against another slider abutting groove 11 (specifically, the slider abutting groove 11 on the right side, as shown in FIG. Figure 5 That is, when the slider 10 switches from the mold opening position to the mold closing position, the elastic limit buckle 30 switches between the two slider abutment grooves 11. This embodiment is designed so that the slider 10 is also restricted by the elastic limit buckle 30 when it is in the mold closing position. With this arrangement, when the mold starts to be opened, the slide 20 moves to the right, and the slider 10 remains fixed under the restriction of the elastic limit buckle 30. The slide 20 moves a distance first, and then the slide 20 and the slider 10 form a limit. At this time, the slide 20 continues to move to the right to force the elastic limit buckle 30 to disengage from the slider 10, thereby pulling the slider 10 to open the mold synchronously. This mold opening action is very suitable for a structure in which the slide 20 pulls the core first, that is, a core shaft can be set on the slide 20, and the core shaft passes through the slider 10 into the molding cavity of the mold to participate in the molding of the product; when the mold is opened, since the slide 20 opens the mold first, the core shaft pulls the core first, and the product is demoulded more smoothly.

[0031] A mounting blind hole is provided at the bottom of the first glass bead insert 31. The first elastic member 32 is a spring and is assembled in the mounting blind hole of the first glass bead insert 31. The bottom of the spring extends out of the first glass bead insert 31 to abut against an external support to achieve stable assembly of the spring.

[0032] Of course, in other embodiments, only one slider abutment groove 11 may be provided, as long as the slider 10 is restrained by the elastic limit buckle 30 when in the mold opening position. The structure of the elastic limit buckle 30 is not limited thereto; a glass bead screw or the like in the prior art may also be used.

[0033] Furthermore, in this embodiment, the bottom of the slide 20 is provided with two slide abutment grooves 21, and further includes a second glass bead insert 41 and a second elastic member 42. The second glass bead insert 41 is pressed against the slide abutment groove 21 by the second elastic member 42, so that the slide 20 remains fixed when no external force is applied; and Figure 3 As shown, when the slide 20 is in the mold opening position, the second glass bead insert 41 abuts against the slide abutment groove 21 on the left side. Figure 5 As shown, when the slide 20 is in the mold closing position, the second glass bead insert 41 abuts against the right slide abutment groove 21. This arrangement can also pre-fix the slide 20 in the mold opening position and the mold closing position, preventing the slide 20 from shaking and causing abnormalities such as unclear stroke.

[0034] Specifically, the structure formed by the second glass bead insert 41 and the second elastic member 42 is the same as the structure of the above-mentioned elastic limit buckle 30, and the structure of the slide seat abutment groove 21 and the slider abutment groove 11 is also the same; that is, the matching mechanism of the second glass bead insert 41 and the second elastic member 42, and the matching structure of the second glass bead insert 41 and the slide seat abutment groove 21 can all refer to the part of the above-mentioned elastic limit buckle 30; the description will not be repeated here.

[0035] Specifically, the mold-open position mentioned above refers to the position of the component when the mold is fully open, and the mold-closed position refers to the position of the component when the mold is fully closed. For example, the mold-closed position of the slider is the position of the slider when the mold is fully closed, and the mold-open position of the slider is the position of the slider when the mold is fully opened, and so on.

[0036] More specifically, in this embodiment, the structure formed by the elastic limit buckle 30 and the second glass bead insert 41 and the second elastic member 42 is used to be fixed on the mold body and will not move left or right, and its position is fixed; of course, it is not limited to this in other embodiments.

[0037] The slider 10 is provided with a limit groove 12, and the slide 20 is provided with a protrusion 22 smaller in size than the limit groove 12. The protrusion 22 engages in the limit groove 12 to achieve delayed limit cooperation between the slider 20 and the slider 10. The movable range of the protrusion 22 in the limit groove 12 is the movable range of the slider 20 relative to the slider 10, thereby achieving delayed limit cooperation between the slider 20 and the slider 10. When the slider 10 and the slide 20 are both in the mold opening position, the right side wall of the protrusion 22 abuts the right side wall of the limit groove 12. When the mold is closed, the slider 20 moves leftward first, and the protrusion 22 moves leftward in the limit groove 12 until the protrusion 22 abuts the left side wall of the limit groove 12, thereby achieving limit cooperation between the slider 20 and the slider 10. After that, the continued leftward movement of the slider 20 drives the slider 10 to move synchronously. Such a configuration is simple in structure and easy to implement.

[0038] This embodiment also provides an injection mold, which at least includes the slider mechanism for delayed mold closing described above.

[0039] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A slider mechanism for delayed mold closing, comprising a slide seat and a slider, wherein both the slide seat and the slider are restricted to slide back and forth in a single direction; characterized in that: The slider is also restricted by an elastic limiting buckle when it is in the mold opening position, so that the slider remains fixed in the absence of external force; the slide seat and the slider form a delayed limiting fit, so that the slide seat forms a limit with the slider only after moving a certain distance relative to the slider; the continued movement of the slide seat after forming a limit with the slider drives the elastic limiting buckle to break away from the restriction on the slider, so that the slide seat drives the slider to move synchronously.

2. The delayed mold closing slider mechanism according to claim 1, characterized in that: The elastic limiting buckle includes a first glass bead insert and a first elastic member. A slider abutment groove is provided at the bottom of the slider. The first glass bead insert is pressed against the slider abutment groove of the slider under the action of the first elastic member to keep the slider stationary; the continued sliding of the sliding seat and the slider after limiting the position forces the first glass bead insert to overcome the elastic force of the first elastic member and disengage from the slider abutment groove.

3. The delayed mold closing slider mechanism according to claim 2, characterized in that: There are two slider abutment grooves at the bottom of the slider, and the two slider abutment grooves are spaced apart along the sliding direction of the slider. When the slider is in the mold opening position, the first glass bead insert abuts against one of the slider abutment grooves, and when the slider is in the mold closing position, the first glass bead insert abuts against the other slider abutment groove.

4. The delayed mold closing slider mechanism according to claim 2 or 3, characterized in that: The slider abutment groove has an inverted "V"-shaped structure, and the top of the first glass bead insert is a triangular tip. The triangular tip of the first glass bead insert abuts against the slider abutment groove having an inverted "V"-shaped structure.

5. The delayed mold closing slider mechanism according to claim 2, characterized in that: A mounting blind hole is provided at the bottom of the first glass bead insert. The first elastic member is a spring and is assembled in the mounting blind hole of the first glass bead insert.

6. The delayed mold closing slider mechanism according to claim 1 or 2, characterized in that: The bottom of the slide is provided with two slide abutment grooves, and also includes a second glass bead insert and a second elastic member. The second glass bead insert is pressed against the slide abutment groove under the action of the second elastic member, so that the slide remains fixed when there is no external force; and when the slide is in the mold opening position, the second glass bead insert is pressed against one of the slide abutment grooves, and when the slide is in the mold closing position, the second glass bead insert is pressed against the other slide abutment groove.

7. The slider mechanism for delayed mold closing according to claim 6, characterized in that: The slide seat abutment groove has an inverted "V"-shaped structure, and the top of the second glass bead insert is a triangular tip, and the triangular tip of the second glass bead insert abuts against the slide seat abutment groove having an inverted "V"-shaped structure.

8. The slider mechanism for delayed mold closing according to claim 6, characterized in that: A mounting blind hole is provided at the bottom of the second glass bead insert. The second elastic member is a spring and is assembled in the mounting blind hole of the second glass bead insert.

9. The slider mechanism for delayed mold closing according to claim 1, characterized in that: A limiting groove is provided on the slider, and a protrusion with a size smaller than the limiting groove is provided on the slide. The protrusion fits in the limiting groove to realize delayed limiting fit between the slide and the slider. The movable range of the protrusion in the limiting groove is the moving range of the slide relative to the slider.

10. An injection mold, characterized in that: At least comprising the slider mechanism for delayed mold closing as described in any one of claims 1 to 9.

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