Mold opening and closing device

Abstract

The utility model discloses a mould switch, including first mould and second mould, be provided with between the inner wall of first mould and second mould upper locating sleeve, the bottom of upper locating sleeve is provided with lower locating sleeve, the inner wall of upper locating sleeve and lower locating sleeve is provided with inner locating sleeve, the inner wall of inner locating sleeve is provided with spring, the top of spring is provided with big ball, the both sides of the top of big ball are provided with small ball. When clamping, spring is pressed against big ball, big ball is pressed against small ball, and small ball is pressed against the reverse buckle of upper locating sleeve, and when opening, the pulling force of small ball is pressed against reverse buckle, and delayed opening is implemented.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and specifically relates to a mold opening and closing device. Background Technology

[0002] Currently, mold opening and closing devices, also known as parting hooks, are used in the mold industry to control the opening sequence of each parting surface in multi-parting molds. For example, they can increase the mold opening resistance between the moving mold plates to ensure that the runner plate and the panel open before the fixed mold plate and the moving mold plate.

[0003] Mold openers and closers mainly include nylon openers and closers and spring openers and closers. Nylon openers and closers mainly rely on the friction force of the interference fit between the nylon and the hole to achieve the mold opening and closing function. Their load capacity is relatively small, and they are unstable in high-temperature environments. Spring openers and closers can increase the mold opening resistance of a certain parting surface, allowing other parting surfaces to open first. They usually need to be used in conjunction with a fixed-distance parting mechanism to achieve orderly mold parting at a fixed distance. This structure can adjust the mold opening resistance by adjusting the spring compression. This structure has a large space requirement, and the force is directly applied axially to the spring, which is easily compressed, resulting in a small locking force of the opener and closer and poor stability in use. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a mold opening and closing device with the advantage of delayed mold opening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold opening and closing device, comprising a first mold and a second mold, an upper positioning sleeve is provided between the inner walls of the first mold and the second mold, a lower positioning sleeve is provided at the bottom of the upper positioning sleeve, an inner positioning sleeve is provided on the inner walls of the upper and lower positioning sleeves, a spring is provided on the inner wall of the inner positioning sleeve, a large ball is provided on the top of the spring, and small balls are provided on both sides of the top of the large ball.

[0006] With the above technical solution, when the mold is closed, the spring holds the large ball, the large ball holds the small ball, and the small ball holds the undercut of the upper positioning sleeve. When the mold is opened, the small ball holds the undercut with tension, thus delaying the mold opening.

[0007] Preferably, both the inner walls of the upper positioning sleeve and the lower positioning sleeve are provided with screw holes, and each screw hole is provided with fixing threads on its inner wall.

[0008] The above technical solution can achieve a fixing function. By using the fixing threads opened in the screw hole, the bolt can be fixed, thereby fixing the upper positioning sleeve and the lower positioning sleeve.

[0009] Preferably, the inner wall of each screw through hole is provided with a bolt, and the bolts are respectively connected to the first mold and the second mold.

[0010] The above technical solution, through the series of bolts, can fix the upper positioning sleeve and the lower positioning sleeve to the first mold and the second mold respectively.

[0011] Preferably, the inner wall of the lower positioning sleeve is provided with threads.

[0012] The above technical solution allows the inner positioning sleeve to be fixed onto the lower positioning sleeve by creating threaded teeth.

[0013] Preferably, a pad is provided at the bottom of the lower positioning sleeve, and a positioning pin is connected in series between the inner wall of the lower positioning sleeve and the pad.

[0014] The above technical solution can achieve a stable effect. By setting a pad at the bottom of the lower positioning sleeve, the lower positioning sleeve can be stabilized.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. When the mold is closed, the spring holds the large ball, the large ball holds the small ball, and the small ball holds the undercut of the upper positioning sleeve. When the mold is opened, the small ball holds the undercut with tension, thus delaying the mold opening.

[0017] 2. The fixing threads made in the screw holes can serve to fix the bolts, thereby fixing the upper and lower positioning sleeves. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Schematic diagram of a partial structure.

[0021] In the diagram: 1. Upper positioning sleeve; 2. Inner positioning sleeve; 3. Lower positioning sleeve; 4. Positioning pin; 5. Large ball bearing; 6. Spring; 7. Washer plate; 8. Small ball bearing; 9. Screw through hole; 10. Fixing thread; 11. Bolt; 12. Thread; 13. First mold; 14. Second mold. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1-3 This utility model provides a technical solution: a mold opening and closing device, including a first mold 13 and a second mold 14. An upper positioning sleeve 1 is provided between the inner walls of the first mold 13 and the second mold 14. A lower positioning sleeve 3 is provided at the bottom of the upper positioning sleeve 1. An inner positioning sleeve 2 is provided on the inner walls of the upper positioning sleeve 1 and the lower positioning sleeve 3. A spring 6 is provided on the inner wall of the inner positioning sleeve 2. A large ball bearing 5 is provided on the top of the spring 6. Small balls bearing 8 are provided on both sides of the top of the large ball bearing 5.

[0025] In this implementation scheme, when the mold is closed, the spring 6 presses against the large ball 5, the large ball 5 presses against the small ball 8, and the small ball 8 presses against the undercut of the upper positioning sleeve 1. When the mold is opened, the small ball 8 presses against the undercut with a pulling force to delay the mold opening.

[0026] Example 2:

[0027] Please see Figure 3 Based on Embodiment 1, this utility model provides a technical solution: the inner wall of the upper positioning sleeve 1 and the inner wall of the lower positioning sleeve 3 are both provided with screw through holes 9, the inner wall of each screw through hole 9 is provided with fixing threads 10, the inner wall of each screw through hole 9 is provided with bolts 11, and the bolts 11 are respectively connected to the first mold 13 and the second mold 14.

[0028] In this embodiment, the fixing thread 10 opened in the screw through hole 9 can serve as a fixing bolt 11, thereby fixing the upper positioning sleeve 1 and the lower positioning sleeve 3. Through the series connection of the bolts 11, the upper positioning sleeve 1 and the lower positioning sleeve 3 can be fixed to the first mold 13 and the second mold 14 respectively.

[0029] Example 3:

[0030] Please see Figure 3 Based on Embodiment 1 and Embodiment 2, this utility model provides a technical solution: the inner wall of the lower positioning sleeve 3 is provided with threaded teeth 12, the bottom of the lower positioning sleeve 3 is provided with a pad 7, and the inner wall of the lower positioning sleeve 3 and the pad 7 are connected in series with positioning pins 4.

[0031] In this embodiment, the inner positioning sleeve 2 can be fixed on the lower positioning sleeve 3 by opening the thread 12, and the lower positioning sleeve 3 can be stabilized by setting the pad 7 at the bottom of the lower positioning sleeve 3.

[0032] The working principle and usage process of this utility model are as follows: When the mold is closed, the spring 6 presses against the large ball 5, the large ball 5 presses against the small ball 8, and the small ball 8 presses against the undercut of the upper positioning sleeve 1. When the mold is opened, the small ball 8 presses against the undercut to delay the mold opening. The fixing thread 10 opened in the screw hole 9 can serve as a fixing bolt 11, thereby fixing the upper positioning sleeve 1 and the lower positioning sleeve 3. Through the series of bolts 11, the upper positioning sleeve 1 and the lower positioning sleeve 3 can be fixed to the first mold 13 and the second mold 14 respectively. Through the opening of the thread 12, the inner positioning sleeve 2 can be fixed on the lower positioning sleeve 3. The pad 7 set at the bottom of the lower positioning sleeve 3 can stabilize the lower positioning sleeve 3.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold opening and closing device, comprising a first mold (13) and a second mold (14), characterized in that: An upper positioning sleeve (1) is provided between the inner walls of the first mold (13) and the second mold (14). A lower positioning sleeve (3) is provided at the bottom of the upper positioning sleeve (1). An inner positioning sleeve (2) is provided on the inner walls of the upper positioning sleeve (1) and the lower positioning sleeve (3). A spring (6) is provided on the inner wall of the inner positioning sleeve (2). A large ball (5) is provided on the top of the spring (6). Small balls (8) are provided on both sides of the top of the large ball (5).

2. The mold opening and closing device according to claim 1, characterized in that: The inner wall of the upper positioning sleeve (1) and the inner wall of the lower positioning sleeve (3) are provided with screw through holes (9), and the inner wall of each screw through hole (9) is provided with fixing threads (10).

3. A mold opening and closing device according to claim 2, characterized in that: The inner wall of each screw through hole (9) is provided with a bolt (11), and the bolt (11) is connected to the first mold (13) and the second mold (14) respectively.

4. A mold opening and closing device according to claim 1, characterized in that: The inner wall of the lower positioning sleeve (3) is provided with threaded teeth (12).

5. A mold opening and closing device according to claim 1, characterized in that: The bottom of the lower positioning sleeve (3) is provided with a pad (7), and the inner wall of the lower positioning sleeve (3) and the pad (7) are connected in series with a positioning pin (4).

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