A center positioning mechanism for a clamp press

Abstract

The utility model relates to a top tight die closing technical field, concretely relates to a kind of center positioning mechanism for top tight die closing, including base, the top end one end of base is fixed with fixed frame, the inner end of fixed frame is rotatably installed with fixed die holder, the inside four corners of fixed die holder are opened with positioning hole, the top end other end of base is movably installed with movable frame, the inner end of movable frame is rotatably installed with movable die holder, the side four corners of movable die holder are installed with guiding positioning mechanism, mobile mechanism is arranged between fixed die holder with movable die holder. The utility model is driven movable die holder along guide rail and moves to the direction of fixed die holder by first hydraulic oil cylinder contraction, until top tight die closing connection, keep the both sides of movable die holder and fixed die holder to be subjected to the same top tight intensity, center alignment positioning die closing is carried out between movable die holder and fixed die holder, avoid the position deviation of die closing between movable die holder and fixed die holder.

Description

Technical Field

[0001] This utility model relates to the field of clamping and mold closing technology, specifically a center positioning mechanism for clamping and mold closing. Background Technology

[0002] In the field of machinery manufacturing, especially mold manufacturing, the center positioning mechanism for clamping and closing molds is crucial. A mold closing machine is a professional mold processing equipment, mainly used in the later stages of mold making to fit the left and right molds together and apply the required pressure to close the molds. It adopts a variety of reliable devices, including a fixed mold base and a movable mold base, and is equipped with a flipping device, hydraulic push rods, etc. to flip the left and right mold bases. The left and right mold bases are then pulled and clamped by hydraulic cylinders on both sides to close the molds.

[0003] Existing center positioning mechanisms for clamping and mold closing use hydraulic cylinders to extend and retract, moving a movable mold base closer to a fixed mold base, thus ensuring a tight fit between the two mold bases. However, the movable mold base is prone to eccentricity during its movement towards the fixed mold base, leading to positional deviations during mold closing. This fails to achieve accurate center positioning between the two mold bases, hindering precise clamping and mold closing, and causing collision damage. Furthermore, prolonged center positioning between the two mold bases results in friction wear and impact damage, making disassembly, replacement, and maintenance difficult and reducing the accuracy of center positioning during mold closing. Therefore, a new center positioning mechanism for clamping and mold closing is proposed to address the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a center positioning mechanism for clamping and closing molds. This mechanism can solve the problem that when a movable mold base moves toward a fixed mold base, it is easy for it to become eccentric, resulting in a positional deviation between the two mold bases during mold closing. The lack of a center positioning setting between the two mold bases is not conducive to accurate clamping and closing between the two mold bases, and may cause collision damage between the two mold bases.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a center positioning mechanism for clamping and closing molds, comprising a base, a fixed frame fixed at one end of the top of the base, a fixed mold base rotatably mounted at the inner end of the fixed frame, positioning holes at the four inner corners of the fixed mold base, a movable frame movably mounted at the other end of the top of the base, a movable mold base rotatably mounted at the inner end of the movable frame, guide positioning mechanisms mounted at the four side corners of the movable mold base, and a moving mechanism provided between the fixed mold base and the movable mold base;

[0006] The guiding and positioning mechanism includes positioning posts and guide heads. The positioning posts are fixed at the four inner corners of the movable mold base. The positioning posts have telescopic grooves inside, and guide posts are elastically slidably inserted into the telescopic grooves. The guide heads are fixed at the outer ends of the guide posts.

[0007] Preferably, the moving mechanism includes a first hydraulic cylinder and a guide rail. The guide rail is fixed to both sides of the top of the base. Side plates are fixed to both sides of the fixed frame and the movable frame. The bottom of the side plate has a sliding groove. The sliding groove is slidably engaged with the outside of the guide rail. The first hydraulic cylinder is horizontally installed between the two side plates.

[0008] Preferably, the base is horizontally set, with support columns fixed to the two sides of its top edge, and a top plate fixed to the top of the support columns. The top plate is horizontally set, and infrared components are installed at the four corners of its top edge.

[0009] Preferably, the top plate is located at the top of the fixed frame and the movable frame, and a first protective cover is fixed at the bottom middle of the top plate. The first protective cover has a U-shaped structure and is spaced on the outside between the movable mold base and the fixed mold base.

[0010] Preferably, a second protective cover is evenly fixed on both sides of the movable mold base and the fixed mold base. The gap between the second protective cover and the first protective cover is set on both sides and is vertically arranged. A second hydraulic cylinder is hinged between the inner side of the movable mold base and the inner bottom end of the movable frame. A third hydraulic cylinder is hinged between the inner side of the fixed mold base and the inner bottom end of the fixed frame.

[0011] Preferably, the guide rail is located on both sides of the fixed frame and the movable frame and is arranged horizontally in a straight line, and the first hydraulic cylinder is arranged horizontally above the guide rail.

[0012] Preferably, the telescopic groove has limit grooves on both sides, the inner end of the guide post is connected to a spring, the inner end of the guide post is slidably inserted into the telescopic groove, the spring is slidably inserted into the inside of the telescopic groove and is under compression, the inner end of the guide post has a connecting hole, the inside of the connecting hole rotates through a limit rod, and the two ends of the limit rod are inserted into the limit groove.

[0013] Preferably, the positioning post is horizontally positioned and horizontally aligned with the positioning hole, the guide head is a conical structure and horizontally positioned, its side diameter is not greater than the diameter of the positioning post, the limiting rod is a threaded rod structure and horizontally positioned, its two ends are embedded in the inside of the limiting groove, and the connecting hole is a threaded hole structure.

[0014] Compared with the prior art, this utility model provides a center positioning mechanism for clamping and closing molds, which has the following beneficial effects:

[0015] 1. A fixed frame and a movable frame are respectively set at both ends of the top of the base. The fixed mold base can be rotatably installed at the inner end of the fixed frame, and the movable mold base can be rotatably installed at the inner end of the movable frame. Therefore, by horizontally setting the first hydraulic cylinder between the two side plates, the first hydraulic cylinder is evenly installed on both sides of the fixed mold base and the movable mold base. By contracting the first hydraulic cylinder, the movable mold base is driven to move along the guide rail towards the fixed mold base until it is tightly closed, so that both sides of the movable mold base and the fixed mold base are subjected to the same clamping force.

[0016] 2. A positioning post is fixed inside the movable mold base, and an expansion groove is set inside the positioning post. Therefore, the guide post is elastically inserted into the expansion groove by a spring, and a guide head is fixed at the outer end of the guide post. As the movable mold base and the fixed mold base come into contact and close, the tapered guide head is inserted into the positioning hole, and the positioning post is accurately guided by the guide post, so that the positioning post is accurately inserted into the positioning hole. This achieves center alignment and positioning of the movable mold base and the fixed mold base, avoiding positional deviation between the movable mold base and the fixed mold base during mold closing.

[0017] 3. A limiting rod is rotatably connected to the inner side of the guide post through a connecting hole, and the two ends of the limiting rod slide into the limiting groove, so that the guide post can be snapped and connected to the positioning post through the limiting rod. Therefore, the guide head and guide post can be disassembled, replaced and maintained to maintain the accuracy of the size and shape of the guide head and guide post, which facilitates accurate guidance of the positioning post and ensures accurate clamping and mold closing between the movable mold base and the fixed mold base. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the positioning post and positioning hole of this utility model.

[0020] Figure 3 This is a schematic diagram of the positioning column and movable mold base of this utility model;

[0021] Figure 4 This is a schematic diagram of the guide post and limiting rod of this utility model.

[0022] Figure 5 This is a schematic diagram of the guide head and guide column of this utility model.

[0023] In the diagram: 1. Base; 2. First hydraulic cylinder; 3. Support column; 4. Guide rail; 5. Side plate; 6. First protective cover; 7. Second protective cover; 8. Fixed frame; 9. Third hydraulic cylinder; 10. Movable frame; 11. Movable mold base; 12. Fixed mold base; 13. Infrared component; 14. Positioning column; 15. Guide head; 16. Guide column; 17. Top plate; 18. Second hydraulic cylinder; 19. Telescopic groove; 20. Limiting groove; 21. Slide groove; 22. Limiting rod; 23. Spring; 24. Connecting hole; 25. Positioning hole. Detailed Implementation

[0024] 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.

[0025] Example:

[0026] Please see Figure 1 - Figure 5 A center positioning mechanism for clamping and closing molds in this embodiment includes a base 1. A fixed frame 8 is fixed to one end of the top of the base 1. A fixed mold base 12 is rotatably installed on the inner end of the fixed frame 8. Positioning holes 25 are opened at the four corners of the inner side of the fixed mold base 12. A movable frame 10 is movably installed on the other end of the top of the base 1. A movable mold base 11 is rotatably installed on the inner end of the movable frame 10. A guide positioning mechanism is installed at the four corners of the side of the movable mold base 11. A moving mechanism is provided between the fixed mold base 12 and the movable mold base 11.

[0027] The guiding and positioning mechanism includes a positioning post 14 and a guide head 15. The positioning post 14 is fixed at the four inner corners of the movable mold base 11. The positioning post 14 has a telescopic groove 19 inside. The guide post 16 is elastically slidably inserted into the telescopic groove 19. The guide head 15 is fixed at the outer end of the guide post 16.

[0028] In this design, a positioning post 14 is fixed inside the movable mold base 11, and a telescopic groove 19 is provided inside the positioning post 14. Therefore, the guide post 16 is elastically inserted into the telescopic groove 19 by the spring 23, and the guide head 15 is fixed at the outer end of the guide post 16.

[0029] Therefore, as the movable mold base 11 and the fixed mold base 12 come into contact and close, the guide head 15 of the conical structure is inserted into the positioning hole 25, and the positioning post 14 is accurately guided by the guide post 16, so that the positioning post 14 is accurately inserted into the positioning hole 25.

[0030] Therefore, the movable mold base 11 and the fixed mold base 12 can be aligned and positioned for mold closing, thus avoiding positional deviations between the movable mold base 11 and the fixed mold base 12 during mold closing.

[0031] In detail, the telescopic groove 19 has limit grooves 20 on both sides, the inner end of the guide post 16 is connected to a spring 23, the inner end of the guide post 16 slides into the telescopic groove 19, the spring 23 slides into the inside of the telescopic groove 19 and is compressed, the inner end of the guide post 16 has a connecting hole 24, the inside of the connecting hole 24 rotates through the limit rod 22, and the two ends of the limit rod 22 are inserted into the limit groove 20.

[0032] The positioning post 14 is horizontally set and horizontally aligned with the positioning hole 25. The guide head 15 is a conical structure and is horizontally set. Its side diameter is not greater than the diameter of the positioning post 14. The limiting rod 22 is a threaded rod structure and is horizontally set. Its two ends are embedded in the inside of the limiting groove 20. The connecting hole 24 is a threaded hole structure.

[0033] The guide post 16 is rotatably connected to the limiting rod 22 through the connecting hole 24 on the inner side, and the two ends of the limiting rod 22 are slidably inserted into the limiting groove 20, so that the guide post 16 can be snapped and connected to the positioning post 14 through the limiting rod 22.

[0034] Therefore, the guide head 15 and guide post 16 can be disassembled, replaced and maintained to maintain the accuracy of the size and shape of the guide head 15 and guide post 16, so as to facilitate accurate guidance of the positioning post 14 and ensure accurate clamping between the movable mold base 11 and the fixed mold base 12.

[0035] Finally, the moving mechanism includes a first hydraulic cylinder 2 and a guide rail 4. The guide rail 4 is fixed on both sides of the top of the base 1. Side plates 5 are fixed on both sides of the fixed frame 8 and the movable frame 10. The bottom of the side plate 5 has a sliding groove 21. The sliding groove 21 is slidably engaged and installed on the outside of the guide rail 4. The first hydraulic cylinder 2 is horizontally installed between the two side plates 5.

[0036] The guide rail 4 is located on both sides of the fixed frame 8 and the movable frame 10, and is arranged horizontally in a straight line. The first hydraulic cylinder 2 is arranged horizontally above the guide rail 4.

[0037] The base 1 is horizontally positioned, with support columns 3 fixed to the two edges of its top. A top plate 17 is fixed to the top of the support columns 3. The top plate 17 is horizontally positioned, with infrared components 13 installed at the four corners of its top. The infrared components 13 are infrared sensors, and P+F / Pepperl+Fuchs infrared sensors of model OBE10M-18GM60-SE4 can be selected. The four infrared sensors are installed at the four corners of the top plate 17, arranged in pairs on both sides of the long side of the top plate 17. When a foreign object such as a head or arm passes between two infrared sensors and blocks the sensing between the two infrared sensors, the infrared sensors will detect the obstruction. Then, the control center in the mold clamping device will control the movable mold base 11 in the mold clamping device to stop moving. After the obstruction leaves between the two infrared sensors, the control center in the mold clamping device will control the movable mold base 11 in the mold clamping device to move again.

[0038] The top plate 17 is located at the top of the fixed frame 8 and the movable frame 10. The bottom of the top plate 17 is fixed with a first protective cover 6. The first protective cover 6 has a U-shaped structure and is spaced on the outside between the movable mold base 11 and the fixed mold base 12.

[0039] The movable mold base 11 and the fixed mold base 12 are evenly fixed with second protective covers 7 on both sides. The gaps between the second protective covers 7 and the first protective cover 6 are set on both sides and are vertically arranged. The inner side of the movable mold base 11 is hinged to the inner bottom end of the movable frame 10 and the inner side of the fixed mold base 12 is hinged to the inner bottom end of the fixed frame 8 and the third hydraulic cylinder 9 is hinged to the inner side of the fixed mold base 12 and the inner bottom end of the fixed frame 8.

[0040] The base 1 has a fixed frame 8 and a movable frame 10 at its two ends. A fixed mold base 12 is rotatably installed at the inner end of the fixed frame 8, and a movable mold base 11 is rotatably installed at the inner end of the movable frame 10.

[0041] Therefore, a first hydraulic cylinder 2 is horizontally arranged between the two side plates 5. Thus, the first hydraulic cylinder 2 is evenly installed on both sides of the fixed mold base 12 and the movable mold base 11. By contracting the first hydraulic cylinder 2, the movable mold base 11 is driven to move along the guide rail 4 towards the fixed mold base 12 until it is tightly closed.

[0042] Therefore, the movable mold base 11 and the fixed mold base 12 are subjected to the same clamping force on both sides, which is conducive to the horizontal center of the movable mold base 11 moving towards the fixed mold base 12 without deviation.

[0043] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0044] 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 center positioning mechanism for clamping and closing molds, characterized in that: The base includes a base (1), a fixed frame (8) is fixed at one end of the top of the base (1), a fixed mold base (12) is rotatably installed at the inner end of the fixed frame (8), positioning holes (25) are opened at the four corners of the inner side of the fixed mold base (12), a movable frame (10) is movably installed at the other end of the top of the base (1), a movable mold base (11) is rotatably installed at the inner end of the movable frame (10), a guide positioning mechanism is installed at the four corners of the side of the movable mold base (11), and a moving mechanism is provided between the fixed mold base (12) and the movable mold base (11). The guiding and positioning mechanism includes a positioning post (14) and a guide head (15). The positioning post (14) is fixed at the four inner corners of the movable mold base (11). The positioning post (14) has a telescopic groove (19) inside. The guide post (16) is elastically slidably inserted into the telescopic groove (19). The guide head (15) is fixed at the outer end of the guide post (16).

2. The center positioning mechanism for clamping and closing molds according to claim 1, characterized in that: The moving mechanism includes a first hydraulic cylinder (2) and a guide rail (4). The guide rail (4) is fixed on both sides of the top of the base (1). Side plates (5) are fixed on both sides of the fixed frame (8) and the movable frame (10). A sliding groove (21) is opened at the bottom of the side plate (5). The sliding groove (21) is slidably engaged on the outside of the guide rail (4). The first hydraulic cylinder (2) is horizontally installed between the two side plates (5).

3. The center positioning mechanism for clamping and closing molds according to claim 1, characterized in that: The base (1) is horizontally set, and support columns (3) are fixed on both sides of its top edge. A top plate (17) is fixed on the top of the support column (3). The top plate (17) is horizontally set, and infrared components (13) are installed at the four corners of its top.

4. The center positioning mechanism for clamping and closing molds according to claim 3, characterized in that: The top plate (17) is located at the top of the fixed frame (8) and the movable frame (10). A first protective cover (6) is fixed at the bottom middle of the top plate (17). The first protective cover (6) is a U-shaped structure and is spaced on the outside between the movable mold base (11) and the fixed mold base (12).

5. A center positioning mechanism for clamping and closing molds according to claim 4, characterized in that: The movable mold base (11) and the fixed mold base (12) are evenly fixed with second protective covers (7) on both sides. The gaps between the second protective covers (7) are set on both sides of the first protective cover (6) and are vertically arranged. The inner side of the movable mold base (11) is hinged to the inner bottom end of the movable frame (10) and the inner side of the fixed mold base (12) is hinged to the inner bottom end of the fixed frame (8) and the third hydraulic cylinder (9) is hinged to the inner side of the fixed mold base (12) and the inner bottom end of the fixed frame (8).

6. A center positioning mechanism for clamping and closing molds according to claim 2, characterized in that: The guide rail (4) is located on both sides of the fixed frame (8) and the movable frame (10) and is arranged in a straight horizontal line. The first hydraulic cylinder (2) is arranged horizontally above the guide rail (4).

7. A center positioning mechanism for clamping and closing molds according to claim 1, characterized in that: The telescopic groove (19) has limit grooves (20) on both sides. The inner end of the guide post (16) is connected to a spring (23). The inner end of the guide post (16) is slidably inserted into the telescopic groove (19). The spring (23) is slidably inserted into the inside of the telescopic groove (19) and is compressed. The inner side of the guide post (16) has a connecting hole (24). The inside of the connecting hole (24) rotates through a limit rod (22). The two ends of the limit rod (22) are inserted into the limit groove (20).

8. A center positioning mechanism for clamping and closing molds according to claim 7, characterized in that: The positioning post (14) is horizontally positioned and horizontally aligned with the positioning hole (25). The guide head (15) is a conical structure and is horizontally positioned, with its side diameter not greater than the diameter of the positioning post (14). The limiting rod (22) is a threaded rod structure and is horizontally positioned, with its two ends embedded inside the limiting groove (20). The connecting hole (24) is a threaded hole structure.

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