An automatic turnover mold opening and closing apparatus

Abstract

The present application relates to the field of mold control mechanism, specifically relates to a kind of automatic overturning open-close mold equipment, including rack, a pair of die frame is liftably installed on the rack, driving die frame lifting die cylinder is symmetrically installed on the two sides of the rack, lower mould is transversely installed on the top of the rack, overturning mechanism is arranged just above the lower mould, the overturning mechanism is installed between two die frames, first upper mould is installed on the top surface of the overturning mechanism, second upper mould is installed on the bottom surface of the overturning mechanism, limiting mechanism for limiting the overturning mechanism is installed on the die frame.This automatic overturning open-close mold mechanism can be used for monochrome and bicolor production according to actual needs, degree of automation is high, can be automatically opened mold, without manual mold.

Description

Technical Field

[0001] This invention relates to the field of mold control mechanisms, and more specifically to an automatic flipping mold opening and closing device. Background Technology

[0002] Currently, the molds used in compression molding generally consist of an upper mold and a lower mold. After compression molding, the mold needs to be opened to separate the upper and lower molds and remove the molded material. The upper mold needs to be opened, but the existing mold materials are generally steel molds, which are heavy. Therefore, the mold opening and flipping work brings great difficulties and operational risks. At present, the mold opening and flipping process is usually carried out manually with the help of gantry cranes or cranes, or the upper mold is raised and lowered by hydraulic cylinders, and manual operation is carried out with auxiliary devices such as pry bars. The operation is difficult and inconvenient and poses significant safety hazards. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an automatic flipping mold opening and closing device.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic flipping mold opening and closing device, including a frame, on which a pair of mold closing frames are movably mounted; on both sides of the frame, mold closing cylinders for driving the mold closing frames to lift and lower are symmetrically mounted; a lower mold is movably mounted on the top of the frame; a flipping mechanism is provided directly above the lower mold; the flipping mechanism is installed between the two mold closing frames; a first upper mold is mounted on the top surface of the flipping mechanism; a second upper mold is mounted on the bottom surface of the flipping mechanism; and a limiting mechanism for limiting the flipping mechanism is mounted on the mold closing frame.

[0005] Preferably, the flipping mechanism includes a rotating frame, a rotating shaft passing through the middle of the rotating frame, and the two ends of the rotating shaft being rotatably mounted on corresponding mold clamping frames on both sides. The mold clamping frame has rotating holes corresponding to the rotating shaft, and a drive mechanism for driving the rotating shaft to rotate is installed on one side of the mold clamping frame.

[0006] Preferably, the driving mechanism includes a flipping bracket, a first flipping cylinder, a second flipping cylinder, and a flipping plate. The flipping bracket is installed on the outside of the mold clamping frame. The tail ends of the cylinder bodies of the first and second flipping cylinders are rotatably mounted on the flipping bracket. The piston ends of the first and second flipping cylinders are rotatably mounted on the flipping plate. The flipping plate is fixedly connected to one end of the rotating shaft.

[0007] Preferably, the first tilting cylinder is located above the second tilting cylinder.

[0008] Preferably, a lower mold base is mounted on the frame, the lower mold is slidably mounted on the top of the lower mold base, and a lateral movement cylinder for driving the lower mold to move laterally is mounted on the rear end face of the lower mold base.

[0009] Preferably, the limiting mechanism includes a movable positioning rod, which is movably mounted on the mold clamping frame, and a fixed positioning rod corresponding to the movable positioning rod is mounted on the rotating frame.

[0010] Preferably, a limiting base is installed on the mold clamping frame, a limiting rod is installed on the limiting base, one end of the limiting rod is in movable contact with the movable positioning rod, a roller is installed on the end of the limiting rod facing the rotating frame, and an arc-shaped platform extending to the roller is installed on the rotating frame.

[0011] Preferably, one end of the limiting rod is movably inserted into the limiting base, and a first return spring is provided between the top of the limiting rod and the inner top surface of the limiting base.

[0012] Preferably, the other end of the limiting rod is provided with a first tilting platform, and the end of the movable positioning rod away from the fixed positioning rod is provided with a second tilting platform corresponding to the first tilting platform.

[0013] Preferably, a baffle is provided next to the movable positioning rod of the mold clamping frame, and a second return spring is provided between the movable positioning rod and the baffle.

[0014] Compared with the prior art, the present invention has the following advantages: the automatic flipping mold opening and closing mechanism can be applied to the production of single color and two color according to actual needs, with a high degree of automation and automatic mold opening without the need for manual mold lifting;

[0015] Furthermore, in this invention, a limiting mechanism is composed of several components such as a movable positioning rod and a fixed positioning rod. The limiting mechanism can prevent the rotating frame from rotating excessively during operation, improve the rotation accuracy of the rotating frame, and thus ensure that the two upper dies can maintain a reliable position of being aligned with the lower die after rotation switching. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the limiting mechanism according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the first reset spring according to an embodiment of the present invention.

[0019] Figure 4 This is a partial structural diagram of the limiting mechanism according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the alignment mechanism according to an embodiment of the present invention.

[0021] Figure 6 Embodiments of the present invention Figure 4 A bottom view.

[0022] The markings in the diagram are: 1. Frame; 2. Mold closing frame; 3. Mold closing cylinder; 4. Lower mold; 5. First upper mold; 6. Second upper mold; 7. Rotating frame; 8. Rotating shaft; 9. Tilting bracket; 10. First tilting cylinder; 11. Second tilting cylinder; 12. Tilting plate; 13. Lower mold base; 14. Connecting rod; 15. Central rotating rod; 16. Lower connecting rod; 17. Transverse block; 18. Alignment plate; 19. Movable positioning rod; 20. Fixed positioning rod; 21. Limiting base; 22. Limiting rod; 23. First return spring; 24. First tilting platform; 25. Second tilting platform; 26. Baffle; 27. Second return spring; 28. Roller; 29. ​​Arc-shaped platform; 30. Limiting mechanism. Detailed Implementation

[0023] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0024] like Figures 1-6 As shown, an automatic flipping mold opening and closing device includes a frame 1. A pair of mold closing frames 2 are flexibly mounted on the frame 1. The mold closing frames 2 are symmetrically located on the upper two sides of the frame 1. Mold closing cylinders 3 are symmetrically mounted on both sides of the frame 1 to drive the mold closing frames 2 to lift and lower. A lower mold 4 is flexibly mounted on the top of the frame 1. A flipping mechanism is provided directly above the lower mold 4. The flipping mechanism is installed between the two mold closing frames 2. A first upper mold 5 is mounted on the top surface of the flipping mechanism. A second upper mold 6 is mounted on the bottom surface of the flipping mechanism. A limiting mechanism 30 for limiting the flipping mechanism is installed on the mold closing frames 2.

[0025] In this embodiment, the flipping mechanism includes a rotating frame 7, with a rotating shaft 8 passing through the middle of the rotating frame 7. The two ends of the rotating shaft 8 are respectively rotatably mounted on the corresponding mold clamping frames 2 on both sides. The mold clamping frame 2 has rotating holes corresponding to the rotating shaft 8. A drive mechanism for driving the rotating shaft 8 to rotate is installed on one side of the mold clamping frame 2.

[0026] In this embodiment, the driving mechanism includes a flipping bracket 9, a first flipping cylinder 10, a second flipping cylinder 11, and a flipping plate 12. The flipping bracket 9 is installed on the outside of the mold clamping frame 2. The cylinder tails of the first flipping cylinder 10 and the second flipping cylinder 11 are rotatably mounted on the flipping bracket 9. The piston ends of the first flipping cylinder 10 and the second flipping cylinder 11 are rotatably mounted on the flipping plate 12. The flipping plate 12 is fixedly connected to one end of the rotating shaft 8.

[0027] In this embodiment, the first tilting cylinder 10 is located above the second tilting cylinder 11.

[0028] In this embodiment, a lower mold base 13 is installed on the frame 1, and the lower mold 4 is slidably installed on the top of the lower mold base 13. A lateral movement cylinder (not shown in the figure) is installed on the rear end face of the lower mold base 13 to drive the lower mold 4 to move laterally.

[0029] When the work is completed, the worker pushes out the lower mold 4 using a transverse cylinder for easy material removal. To prevent the lower mold 4 from not resetting accurately after being pushed by the transverse cylinder, in this embodiment, an alignment mechanism is installed between the frame 1 and the mold clamping frame 2. The alignment mechanism includes two upper connecting rods 14, two intermediate rotating rods 15, and two lower connecting rods 16. The tops of the two upper connecting rods 14 are rotatably mounted on the mold clamping frame 2. The bottom of one upper connecting rod 14 is rotatably connected to the top of one intermediate rotating rod 15. The middle part of the intermediate rotating rod 15 is rotatably mounted on the lower mold base 13. The bottom of one intermediate rotating rod 15 is rotatably connected to the top of one lower connecting rod 16. The bottom of the lower connecting rod 16 is mounted on a transverse block 17. The side of the transverse block 17 is slidably embedded in the side of the lower mold base 13. An alignment plate 18 is rotatably mounted on the side of the transverse block 17. The top of the lower mold base 13 has an alignment groove for the alignment plate 18 to extend out (not shown in the figure).

[0030] In this embodiment, the alignment plate 18 and the transverse block 17 are connected by a torsion spring. The end face of the alignment plate 18 facing the lower mold is a vertical surface, and the other end face of the alignment plate 18 away from the lower mold 4 is an inclined surface.

[0031] When the mold is closed, the mold closing frame 2 descends, and the mold closing frame 2 drives the upper connecting rod 14 to swing. The upper connecting rod 14 drives the middle rotating rod 15 to swing, and the middle rotating rod 15 drives the lower connecting rod 16 to swing. The lower connecting rod 16 drives the transverse moving block 17 to move, so that the two transverse moving blocks 17 move towards each other. The alignment plate 18 on the transverse moving block 17 extends out from the opening of the alignment groove. The two alignment plates 18 press against the lower mold 4 from the front and rear ends respectively, so that the lower mold 4 can be aligned with the upper mold.

[0032] The limiting mechanism 30 is used to prevent excessive rotation of the rotating frame 7, thereby ensuring that the two upper dies can maintain a reliable position of alignment with the lower die after rotation switching. In this embodiment, the limiting mechanism 30 includes a movable positioning rod 19, which is movably mounted on the mold closing frame 2. The rotating frame 7 is equipped with a fixed positioning rod 20 corresponding to the movable positioning rod 19.

[0033] The fixed positioning rod 20 and the movable positioning rod 19 are arranged vertically between each other. Limiting mechanisms are installed on the front and rear end faces of the mold closing frame 2 respectively. The limiting mechanisms are used to restrict the transition rotation of the rotating frame 7, thereby improving the accuracy of mold closing.

[0034] In this embodiment, when the rotating frame 7 flips, the movable positioning rod 19 gradually extends towards the rotating frame 7. When the fixed positioning rod 20 is held in place by the movable positioning rod 19, the rotating frame 7 stops rotating, indicating that the mold has rotated into place and the mold closing operation can begin.

[0035] A limiting base 21 is installed on the mold clamping frame 2, and a limiting rod 22 is installed on the limiting base 21. One end of the limiting rod 22 passes through the limiting base 21. A first return spring 23 is provided between the top of the limiting rod 22 and the inner top surface of the limiting base 21. A first tilting platform 24 is provided at the other end of the limiting rod 22. A second tilting platform 25 corresponding to the first tilting platform 24 is provided at the end of the movable positioning rod 19 away from the fixed positioning rod 20. The facing sides of the two tilting platforms are inclined surfaces.

[0036] The mold clamping frame 2 is provided with a baffle 26 next to the movable positioning rod 19. A second return spring 27 is provided between the movable positioning rod 19 and the baffle 26. A roller 28 is installed on one end of the limiting rod 22 facing the rotating frame. An arc-shaped platform 29 extending to the roller 28 is installed on the rotating frame 7.

[0037] As the rotating frame 7 rotates, the arc-shaped platform 29 reaches the roller 28. The roller 28 is squeezed outward by the arc-shaped platform 29, and the limiting rod 22 moves with the roller 28. At this time, the first return spring 23 is compressed, and the limiting rod 22 drives the first tilting platform 24 to move, so that the first tilting platform 24 squeezes the second tilting platform 25. The second tilting platform 25 drives the movable positioning rod 19 to gradually move towards the rotating frame 7. At this time, the second return spring 27 is compressed.

[0038] After the mold closing structure is completed, the rotating frame 7 reverses, the roller 28 gradually leaves the arc-shaped platform, and the limit rod is reset by the first reset spring 23. The first tilting platform 24 is reset at the same time, and the first tilting platform 24 no longer presses against the second tilting platform 25. The movable positioning rod 19 is reset by the second reset spring 27.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the technical solution of the present invention, based on the technical essence of the present invention, should be within the scope of the present invention.

Claims

1. An automatic flipping mold opening and closing device, characterized in that: The device includes a frame on which a pair of mold-closing frames are vertically mounted. Mold-closing cylinders for driving the mold-closing frames to rise and fall are symmetrically mounted on both sides of the frame. A lower mold is horizontally mounted on the top of the frame. A flipping mechanism is positioned directly above the lower mold and is installed between the two mold-closing frames. A first upper mold is mounted on the top surface of the flipping mechanism, and a second upper mold is mounted on the bottom surface. A limiting mechanism for limiting the flipping mechanism is mounted on the mold-closing frames. The flipping mechanism includes a rotating frame. The limiting mechanism includes a movable positioning rod, which is movably mounted on the mold-closing frames. A fixed positioning rod corresponding to the movable positioning rod is mounted on the rotating frame. A limiting base is mounted on the mold-closing frames, and a limiting rod is mounted on the limiting base. One end of the limiting rod is in movable contact with the movable positioning rod. A roller is mounted on the end of the limiting rod facing the rotating frame. An arc-shaped platform extending to the roller is mounted on the rotating frame. As the rotating frame rotates, the arc-shaped platform reaches the roller, and the roller is squeezed outward by the arc-shaped platform. The limiting rod moves with the roller. When the rotating frame flips, the movable positioning rod gradually extends towards the rotating frame. When the fixed positioning rod is pushed by the movable positioning rod, the rotating frame stops rotating. A lower mold base is mounted on the frame; An alignment mechanism is installed between the frame and the mold clamping frame. The alignment mechanism includes two upper connecting rods, two intermediate rotating rods, and two lower connecting rods. The tops of the two upper connecting rods are symmetrically mounted on the mold clamping frame. The bottom of one upper connecting rod is rotatably connected to the top of one intermediate rotating rod. The middle part of the intermediate rotating rod is rotatably mounted on the lower mold base. The bottom of one intermediate rotating rod is rotatably connected to the top of one lower connecting rod. The bottom of the lower connecting rod is mounted on a transverse block. The side of the transverse block is slidably embedded in the side of the lower mold base. An alignment plate is rotatably mounted on the side of the transverse block. The top of the lower mold base has an alignment groove for the alignment plate to extend out.

2. The automatic flipping and opening / closing mold device according to claim 1, characterized in that: A rotating shaft is inserted through the middle of the rotating frame. The two ends of the rotating shaft are respectively rotatably mounted on the corresponding mold clamping frames on both sides. The mold clamping frames are provided with rotating holes corresponding to the rotating shaft. A drive mechanism for driving the rotating shaft to rotate is installed on one side of the mold clamping frame.

3. The automatic flipping and opening / closing mold device according to claim 2, characterized in that: The driving mechanism includes a flipping bracket, a first flipping cylinder, a second flipping cylinder, and a flipping plate. The flipping bracket is installed on the outside of the mold clamping frame. The tail ends of the cylinder bodies of the first and second flipping cylinders are rotatably mounted on the flipping bracket. The piston ends of the first and second flipping cylinders are rotatably mounted on the flipping plate. The flipping plate is fixedly connected to one end of the rotating shaft.

4. The automatic flipping and opening / closing mold device according to claim 3, characterized in that: The first tilting cylinder is located above the second tilting cylinder.

5. The automatic flipping and opening / closing mold device according to claim 1, characterized in that: The lower mold is slidably mounted on top of the lower mold base, and a lateral movement cylinder for driving the lower mold to move laterally is mounted on the rear end face of the lower mold base.

6. The automatic flipping and opening / closing mold device according to claim 1, characterized in that: One end of the limiting rod is movably inserted into the limiting base, and a first return spring is provided between the top of the limiting rod and the inner top surface of the limiting base.

7. The automatic flipping and opening / closing mold device according to claim 6, characterized in that: The other end of the limiting rod is provided with a first tilting platform, and the end of the movable positioning rod away from the fixed positioning rod is provided with a second tilting platform corresponding to the first tilting platform.

8. The automatic flipping and opening / closing mold device according to claim 7, characterized in that: The mold clamping frame is provided with a baffle plate next to the movable positioning rod, and a second return spring is provided between the movable positioning rod and the baffle plate.

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