Guiding and positioning mechanism of plastic mold

Abstract

The utility model discloses a guiding and positioning mechanism of a plastic mould, and relates to the technical field of moulds. The mold comprises a fixed mold frame, a movable mold frame is arranged above the fixed mold frame, an electric cylinder is arranged on one side of the fixed mold frame, the output shaft end of the electric cylinder is fixedly connected with a lengthened shaft, the output shaft end of the lengthened shaft is fixedly connected with a first transverse plate, and the bottom face of the first transverse plate is fixedly connected with the top face of the movable mold frame. Notches are formed in the four corners of the top face of the fixed mold frame, guide grooves are formed in the inner bottom walls of the notches, guide rods are arranged at the four corners of the bottom face of the movable mold frame in a penetrating mode, the guide rods correspond to the guide grooves and are matched with the guide grooves, end covers are detachably arranged at the top ends of the guide rods, and limiting plates are detachably arranged in the middles of the side walls of the guide rods. The bottom surface of the limiting plate is fixedly connected with a rubber pad, and the rubber pad corresponds to and is matched with the notch; according to the utility model, the guide rod is convenient to disassemble and assemble, so that the guide rod is maintained, overhauled or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a guiding and positioning mechanism for a plastic mold. Background Art

[0002] Plastic molds are also called injection molds. Molten plastic is injected into the cavity formed by the mold assembly. After cooling and molding, the desired product can be obtained. It is suitable for mass production of plastic parts. Injection molds generally include a movable mold frame and a fixed mold frame. When closing the mold, the movable mold frame and the fixed mold frame are generally guided and positioned by the cooperation of guide rods and guide holes.

[0003] Friction will occur between the existing mold guide rod and the guide hole, and after long-term use, the guide rod needs to be disassembled for maintenance, repair or replacement. However, most of the current guide rods are fixed, which is troublesome and inefficient to disassemble. In view of the above problems, the inventor proposes a guide positioning mechanism for a plastic mold to solve the above problems. Utility Model Content

[0004] In order to solve the problem that most of the current guide rods are fixed, which is troublesome to disassemble and has low efficiency; the purpose of the utility model is to provide a guiding and positioning mechanism for a plastic mold.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a guiding and positioning mechanism for a plastic mold, comprising a fixed mold frame, a movable mold frame is arranged above the fixed mold frame, an electric cylinder is arranged on one side of the fixed mold frame, an output shaft end of the electric cylinder is fixedly connected with an extension shaft, an output shaft end of the extension shaft is fixedly connected with a first cross plate, the bottom surface of the first cross plate is fixedly connected with the top surface of the movable mold frame, four corners of the top surface of the fixed mold frame are provided with recesses, the inner bottom wall of the recess is provided with a guide groove, four corners of the bottom surface of the movable mold frame are interspersed with guide rods, the guide rods correspond to and match the guide grooves, the top end of the guide rod is detachably provided with an end cover, the middle part of the side wall of the guide rod is detachably provided with a limit plate, the bottom surface of the limit plate is fixedly connected with a rubber pad, and the rubber pad corresponds to and matches the recess.

[0006] Preferably, the side wall of the electric cylinder is provided with a first fixing frame, the side wall of the first fixing frame is fixedly connected to the outer side wall of the fixed mold frame, the electric cylinder is installed through the first fixing frame, the electric cylinder is started, the extension shaft drives the first cross plate to be lifted and lowered under the action of the electric cylinder output shaft, and then the movable mold frame can be lifted and lowered, so that the movable mold frame and the fixed mold frame can be molded or demolded, and a vertical cylinder is provided on the side of the fixed mold frame facing away from the electric cylinder, the top surface of the vertical cylinder is inserted and slidably connected with a movable rod, the top end of the movable rod is fixedly connected with a second cross plate, the bottom surface of the second cross plate is fixedly connected to the top surface of the movable mold frame, the side wall of the vertical cylinder is provided with a second fixing frame, the side wall of the second fixing frame is fixedly connected to the outer side wall of the fixed mold frame, through the mutual cooperation of the movable rod and the vertical cylinder, the movable mold frame can move up and down more smoothly, thereby reducing the collision and wear between the guide rod and the guide groove, and the vertical cylinder is installed through the second fixing frame.

[0007] Preferably, a through opening is provided on the top surface of the movable mold frame, and the cross-section of the through opening is I-shaped. The guide rod is located in the through opening and can move in the through opening. The guide rod is used to cooperate with the guide groove to play a guiding and positioning role. A first external thread is provided on the upper part of the outer wall of the guide rod, and a first threaded barrel is fixedly connected to the bottom surface of the end cover, and the first threaded barrel cooperates with the first external thread. A handle is fixedly connected to the top surface of the end cover. When the guide rod needs to be installed, the guide rod is placed in the through opening, the first threaded barrel is aligned with the first external thread, and the handle is turned. Through the mutual cooperation of the first threaded barrel and the first external thread, the end cover can be installed in the through opening.

[0008] Preferably, the side of the limit plate facing away from the rubber pad is fixedly connected with a second threaded barrel, and the outer side wall of the guide rod is provided with a second external thread below the first external thread, and the second threaded barrel cooperates with the second external thread. The limit plate is a hollow plate, and the limit plate is put on the guide rod. The limit plate is screwed, and the limit plate can be installed in the through opening through the mutual cooperation of the second threaded barrel and the second external thread. The guide rod can be installed and fixed through the cooperation of the end cover and the limit plate to prevent the guide rod from detaching. When the guide rod needs to be replaced or repaired, only the operation needs to be performed in reverse.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model is convenient for disassembling and assembling the guide rod so as to maintain, overhaul or replace the guide rod. The guide rod is provided with a first external thread and a second external thread. Through the cooperation between the first threaded barrel and the first external thread, and through the cooperation between the second threaded barrel and the second external thread, the end cover and the limit plate can be installed and fixed to the guide rod;

[0011] 2. The utility model can play a guiding and positioning role by cooperating with the guide rod and the guide groove when the movable mold frame cooperates with the fixed mold frame to perform the mold closing operation, and when the electric cylinder is started to move the movable mold frame, the movable rod and the vertical cylinder cooperate with each other, so that the movable mold frame can move up and down more smoothly, thereby reducing the collision wear between the guide rod and the guide groove and extending the service life of the guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is another schematic diagram of the overall structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the movable mold frame of the utility model.

[0016] Figure 4 It is an enlarged view of point A of the present utility model.

[0017] In the figure: 1. fixed mold frame; 2. movable mold frame; 3. first fixed frame; 4. electric cylinder; 5. extension shaft; 6. first horizontal plate; 7. second fixed frame; 8. vertical cylinder; 9. movable rod; 10. second horizontal plate; 11. notch; 12. guide groove; 13. through hole; 14. guide rod; 15. first external thread; 16. second external thread; 17. end cover; 18. handle; 19. first threaded cylinder; 20. limit plate; 21. rubber pad; 22. second threaded cylinder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: Figure 1-4As shown, the utility model provides a guiding and positioning mechanism for a plastic mold, comprising a fixed mold frame 1, a movable mold frame 2 is arranged above the fixed mold frame 1, an electric cylinder 4 is arranged on one side of the fixed mold frame 1, an output shaft end of the electric cylinder 4 is fixedly connected with an extension shaft 5, an output shaft end of the extension shaft 5 is fixedly connected with a first transverse plate 6, a bottom surface of the first transverse plate 6 is fixedly connected with a top surface of the movable mold frame 2, four corners of the top surface of the fixed mold frame 1 are provided with recesses 11, an inner bottom wall of the recess 11 is provided with a guide groove 12, four corners of the bottom surface of the movable mold frame 2 are interspersed with guide rods 14, the guide rods 14 correspond to and match the guide grooves 12, an end cover 17 is detachably arranged at the top end of the guide rod 14, a limit plate 20 is detachably arranged in the middle of the side wall of the guide rod 14, a rubber pad 21 is fixedly connected to the bottom surface of the limit plate 20, and the rubber pad 21 corresponds to and matches the recess 11.

[0020] A first fixing frame 3 is provided on the side wall of the electric cylinder 4 , and the side wall of the first fixing frame 3 is fixedly connected to the outer side wall of the fixed mold frame 1 .

[0021] By adopting the above technical solution, the electric cylinder 4 is installed through the first fixed frame 3, and the electric cylinder 4 is started. The extension shaft 5 drives the first cross plate 6 to rise and fall under the action of the output shaft of the electric cylinder 4, and then the movable mold frame 2 can be raised and lowered, so that the movable mold frame 2 and the fixed mold frame 1 can be molded or demolded.

[0022] A vertical cylinder 8 is provided on the side of the fixed mold frame 1 facing away from the electric cylinder 4, and a movable rod 9 is inserted and slidably connected to the top surface of the vertical cylinder 8. The top of the movable rod 9 is fixedly connected to a second cross plate 10, and the bottom surface of the second cross plate 10 is fixedly connected to the top surface of the movable mold frame 2. A second fixed frame 7 is provided on the side wall of the vertical cylinder 8, and the side wall of the second fixed frame 7 is fixedly connected to the outer wall of the fixed mold frame 1.

[0023] By adopting the above technical solution, through the mutual cooperation between the movable rod 9 and the vertical cylinder 8, the movable mold frame 2 can move up and down more smoothly, thereby reducing the collision and wear between the guide rod 14 and the guide groove 12. The vertical cylinder 8 is installed through the second fixed frame 7.

[0024] A through opening 13 is provided through the top surface of the movable mold frame 2 . The cross section of the through opening 13 is in an I-shape. A guide rod 14 is located in the through opening 13 .

[0025] By adopting the above technical solution, the guide rod 14 can move in the through opening 13, and the guide rod 14 is used to cooperate with the guide groove 12 to play a role of guiding and positioning.

[0026] A first external thread 15 is provided on the upper portion of the outer wall of the guide rod 14 , a first threaded barrel 19 is fixedly connected to the bottom surface of the end cover 17 , the first threaded barrel 19 matches the first external thread 15 , and a handle 18 is fixedly connected to the top surface of the end cover 17 .

[0027] By adopting the above technical solution, when the guide rod 14 needs to be installed, the guide rod 14 is placed in the through opening 13, the first threaded tube 19 is aligned with the first external thread 15, and the handle 18 is turned. Through the mutual cooperation between the first threaded tube 19 and the first external thread 15, the end cover 17 can be installed in the through opening 13.

[0028] A second threaded barrel 22 is fixedly connected to a side of the limiting plate 20 facing away from the rubber pad 21 . A second external thread 16 is provided on the outer wall of the guide rod 14 below the first external thread 15 . The second threaded barrel 22 matches the second external thread 16 .

[0029] By adopting the above technical solution, the limit plate 20 is a hollow plate, and the limit plate 20 is mounted on the guide rod 14. The limit plate 20 is screwed, and the second threaded tube 22 cooperates with the second external thread 16, so that the limit plate 20 can be installed in the through opening 13. Through the cooperation of the end cover 17 and the limit plate 20, the guide rod 14 can be installed and fixed to prevent the guide rod 14 from detaching. When the guide rod 14 needs to be replaced or repaired, only the operation needs to be performed in reverse.

[0030] Working principle: When the utility model is in use, the electric cylinder 4 is started, and the extension shaft 5 drives the first horizontal plate 6 to move up and down under the action of the output shaft of the electric cylinder 4, so that the movable mold frame 2 can be lifted and lowered, so that the movable mold frame 2 and the fixed mold frame 1 can be molded or demolded, and through the mutual cooperation of the movable rod 9 and the vertical cylinder 8, the movable mold frame 2 can move up and down more smoothly, thereby reducing the collision and wear between the guide rod 14 and the guide groove 12;

[0031] When the guide rod 14 needs to be installed, the guide rod 14 is placed in the through opening 13, the first threaded tube 19 is aligned with the first external thread 15, and the handle 18 is turned. Through the cooperation between the first threaded tube 19 and the first external thread 15, the end cover 17 can be installed in the through opening 13. Then, the limit plate 20 is put on the guide rod 14, and the limit plate 20 is turned. Through the cooperation between the second threaded tube 22 and the second external thread 16, the limit plate 20 can be installed in the through opening 13. Through the cooperation between the end cover 17 and the limit plate 20, the guide rod 14 can be installed and fixed to prevent the guide rod 14 from detaching. When the guide rod 14 needs to be replaced or repaired, only the operation needs to be performed in reverse.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A guiding and positioning mechanism for a plastic mold, comprising a fixed mold frame (1), characterized in that: A movable mold frame (2) is arranged above the fixed mold frame (1), an electric cylinder (4) is arranged on one side of the fixed mold frame (1), an output shaft end of the electric cylinder (4) is fixedly connected to an extension shaft (5), an output shaft end of the extension shaft (5) is fixedly connected to a first transverse plate (6), a bottom surface of the first transverse plate (6) is fixedly connected to a top surface of the movable mold frame (2), four corners of the top surface of the fixed mold frame (1) are arranged with notches (11), and an inner bottom wall of the notch (11) is arranged with a guide The movable mold frame (2) is provided with a guide rod (14) at four corners of the bottom surface thereof, the guide rod (14) corresponds to and matches the guide groove (12), the top end of the guide rod (14) is detachably provided with an end cover (17), the middle part of the side wall of the guide rod (14) is detachably provided with a limit plate (20), the bottom surface of the limit plate (20) is fixedly connected with a rubber pad (21), and the rubber pad (21) corresponds to and matches the notch (11).

2. A guiding and positioning mechanism for a plastic mold according to claim 1, characterized in that: A first fixing frame (3) is provided on the side wall of the electric cylinder (4), and the side wall of the first fixing frame (3) is fixedly connected to the outer side wall of the fixed mold frame (1).

3. A guiding and positioning mechanism for a plastic mold as claimed in claim 1, characterized in that: A vertical cylinder (8) is arranged on the side of the fixed mold frame (1) facing away from the electric cylinder (4), and a movable rod (9) is inserted and slidably connected to the top surface of the vertical cylinder (8).

4. A guiding and positioning mechanism for a plastic mold as claimed in claim 3, characterized in that: The top end of the movable rod (9) is fixedly connected to a second transverse plate (10), and the bottom surface of the second transverse plate (10) is fixedly connected to the top surface of the movable mold frame (2).

5. A guiding and positioning mechanism for a plastic mold as claimed in claim 3, characterized in that: The side wall of the vertical cylinder (8) is provided with a second fixing frame (7), and the side wall of the second fixing frame (7) is fixedly connected to the outer side wall of the fixed mold frame (1).

6. A guiding and positioning mechanism for a plastic mold as claimed in claim 1, characterized in that: A through opening (13) is provided through the top surface of the movable mold frame (2), the cross section of the through opening (13) is in an I-shape, and the guide rod (14) is located in the through opening (13).

7. A guiding and positioning mechanism for a plastic mold as claimed in claim 1, characterized in that: The upper portion of the outer wall of the guide rod (14) is provided with a first external thread (15); the bottom surface of the end cover (17) is fixedly connected with a first threaded barrel (19), the first threaded barrel (19) matches the first external thread (15); the top surface of the end cover (17) is fixedly connected with a handle (18).

8. A guiding and positioning mechanism for a plastic mold as claimed in claim 7, characterized in that: A second threaded tube (22) is fixedly connected to a side of the limit plate (20) facing away from the rubber pad (21); a second external thread (16) is provided on the outer wall of the guide rod (14) below the first external thread (15); and the second threaded tube (22) cooperates with the second external thread (16).

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