Die changing structure for rapidly switching dies

Abstract

The utility model discloses a die changing structure for quickly switching dies, which comprises a bottom plate, the top of the bottom plate is rotatably connected with a connecting shaft, the bottom of the bottom plate is fixedly connected with a speed reducing motor, and an output shaft of the speed reducing motor penetrates through the bottom plate to be fixed with the connecting shaft. A plurality of lower dies are fixedly connected to the outer side of the circumference, located at the top of the bottom plate, of the connecting shaft, a plurality of upper dies are evenly and slidably connected to the outer side of the circumference of the connecting shaft, the upper dies correspond to the lower dies one to one, a top plate is fixedly connected to the top end of the connecting shaft, and a plurality of tension springs are arranged between the upper dies and the top plate; according to the mold, rapid replacement of the mold is achieved, the problems that in the prior art, time and efficiency are low due to the fact that an existing mold needs to be disassembled firstly and then a new mold needs to be installed are solved, accurate positioning of the upper mold and the lower mold can be achieved by inserting the inserting rods to be matched with the limiting holes, and it is ensured that no deviation exists in the opening and closing process.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold changing structure for rapid mold switching. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping.

[0003] A search revealed Chinese patent CN215786212U, which discloses a quick-change mold structure, including an upper mold base and a lower mold base. The lower end face of the upper mold base is fixedly connected to an inner guide post. This quick-change mold structure solves the problem of inconvenience in installing the upper mold in existing stamping dies. However, it still has the following drawbacks: it requires disassembling the existing mold, removing the old mold, and then installing the new mold. This replacement method not only wastes manpower but is also time-consuming and inefficient. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mold-changing structure for rapid mold switching.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mold-changing structure for quick mold switching includes a base plate. A connecting shaft is rotatably connected to the top of the base plate, and a reduction motor is fixedly connected to the bottom of the base plate. The output shaft of the reduction motor passes through the base plate and is fixed to the connecting shaft. Multiple lower molds are fixedly connected to the outer circumference of the top of the connecting shaft. Multiple upper molds are slidably connected to the outer circumference of the connecting shaft, and the multiple upper molds correspond one-to-one with the lower molds. A top plate is fixedly connected to the top of the connecting shaft. Multiple tension springs are provided between the upper molds and the top plate. One end of every two adjacent tension springs is fixed to the upper mold, and the other end is fixed to the top plate. A pushing mechanism is provided on the top of the base plate to push one of the upper molds downward.

[0007] As a further embodiment of this utility model, the pushing mechanism includes a support frame fixedly connected to the top of the base plate, a cylinder fixedly connected to the top of the support frame, and the piston rod of the cylinder passing through the support frame and fixedly connected to a pressure plate.

[0008] As a further embodiment of this utility model, a first protrusion is fixedly connected to both sides of the plurality of upper molds, and a limiting hole is opened at the bottom of the plurality of first protrusions. A second protrusion is fixedly connected to both sides of the plurality of lower molds, and a plug rod that is inserted into the limiting hole is fixedly connected to the top of the plurality of second protrusions.

[0009] As a further improvement of this utility model, the top ends of the plurality of the insertion rods are provided with bevels.

[0010] As a further embodiment of this utility model, a fixing plate is fixedly connected to one side of each of the multiple lower molds, a threaded rod is threadedly connected to the bottom of each of the multiple fixing plates, and an insert block is rotatably connected to the lower end of each of the multiple threaded rods via a bearing. A fixing block is fixedly connected to the top of each of the multiple base plates, and a slot for engaging with the insert block is provided on the top of the fixing block.

[0011] As a further embodiment of this utility model, one end of each of the multiple threaded rods passes through a fixing plate and is fixedly connected to a knob that facilitates the rotation of the threaded rod.

[0012] As a further embodiment of this utility model, each of the multiple tension springs is provided with a damping telescopic rod, and one end of the damping telescopic rod is fixed to the top plate, while the other end is fixed to the upper mold.

[0013] As a further improvement of this utility model, the top of the base plate is fixedly connected with a slide rail that makes the rotation of multiple lower molds smoother.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves rapid mold replacement through the cooperation of the connecting shaft and the top plate, solving the problem of low time and efficiency caused by the need to disassemble the existing mold and install the new mold in the prior art, thereby greatly shortening the mold replacement time.

[0016] 2. This utility model, through the cooperation of the insertion rod and the limiting hole, can achieve precise positioning of the upper and lower molds, ensuring no deviation during the opening and closing process, thereby improving the efficiency and stability of the mold.

[0017] 3. This utility model achieves rapid fixing of the lower mold by using the combination of the insert block and the threaded rod, avoiding the problem of the lower mold and upper mold moving during use and affecting the production of the workpiece, thus ensuring the production quality and stability of the workpiece. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the mold-changing structure for rapid mold switching proposed in this utility model;

[0019] Figure 2 This is an enlarged schematic diagram of part A of the mold-changing structure for rapid mold switching proposed in this utility model;

[0020] Figure 3 This is an enlarged schematic diagram of part B of the mold-changing structure for rapid mold switching proposed in this utility model.

[0021] In the diagram: 1. Support frame; 2. Pressure plate; 3. Cylinder; 4. First protrusion; 5. Limiting hole; 6. Top plate; 7. Upper mold; 8. Lower mold; 9. Connecting shaft; 10. Slide rail; 11. Base plate; 12. Second protrusion; 13. Insert rod; 14. Damping telescopic rod; 15. Tension spring; 16. Fixing plate; 17. Insert block; 18. Slot; 19. Threaded rod; 20. Inclined surface. Detailed Implementation

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0023] Reference Figures 1-3 A mold-changing structure for quick mold switching includes a base plate 11. A connecting shaft 9 is rotatably connected to the top of the base plate 11. A reduction motor is fixed to the bottom of the base plate 11 by bolts, and the output shaft of the reduction motor passes through the base plate 11 and is fixed to the connecting shaft 9. Multiple lower molds 8 are fixed to the outer circumference of the top of the connecting shaft 9 by bolts. A slide rail 10 is fixed to the top of the base plate 11 by bolts to make the multiple lower molds 8 rotate more smoothly. The slide rail 10 guides the lower molds 8, making the lower molds 8 more stable during sliding.

[0024] Multiple upper molds 7 are evenly slidably connected to the outer circumference of the connecting shaft 9, and the multiple upper molds 7 correspond one-to-one with the lower molds 8. The top of the connecting shaft 9 is fixed with a top plate 6 by bolts. Multiple tension springs 15 are provided between the upper molds 7 and the top plate 6. Each of the multiple tension springs 15 has a damping telescopic rod 14 passing through it. One end of the damping telescopic rod 14 is fixed to the top plate 6, and the other end is fixed to the upper mold 7. The damping telescopic rod 14 prevents the upper mold 7 from shifting during movement, making the upper mold 7 more stable during use.

[0025] One end of each pair of adjacent tension springs 15 is fixed to the upper mold 7, and the other end is fixed to the top plate 6. The top of the bottom plate 11 is provided with a pushing mechanism to push one of the upper molds 7 downward. The pushing mechanism includes a support frame 1 fixed to the top of the bottom plate 11 by bolts. The top of the support frame 1 is fixed with a cylinder 3 by bolts, and the piston rod of the cylinder 3 passes through the support frame 1 and is fixed with a pressure plate 2 by bolts. When the cylinder 3 is activated, the piston rod of the cylinder 3 extends and drives the pressure plate 2 to move downward. The pressure plate 2 pushes the upper mold 7 downward, so that the upper mold 7 and the lower mold 8 fit together, thereby processing the workpiece. By starting the motor, the output shaft of the motor drives multiple upper molds 7 and multiple lower molds 8 to rotate simultaneously, rotating the upper mold 7 and the lower mold 8 to be used to the bottom of the pushing mechanism, thereby realizing the rapid switching of molds. This solves the problem that the existing molds need to be disassembled, the old molds removed, and the new molds installed, which leads to a lot of wasted time. It greatly reduces the switching time and improves the overall processing efficiency.

[0026] In this invention, multiple upper molds 7 are each bolted with a first protrusion 4 on both sides, and each first protrusion 4 has a limiting hole 5 at its bottom. Multiple lower molds 8 are each bolted with a second protrusion 12 on both sides, and each second protrusion 12 has a bolted with a rod 13 that is inserted into the limiting hole 5 at its top. Each rod 13 has a bevel 20 at its top. The bevel 20 enables self-adaptive positioning between the limiting hole 5 and the rod 13, eliminating the need for repeated adjustments between the limiting hole 5 and the rod 13. This greatly improves positioning efficiency and accuracy. The use of the rod 13 and the limiting hole 5 ensures precise positioning of the upper mold 7 and the lower mold 8, preventing deviations during opening and closing and improving the stability of the mold during use.

[0027] One side of each of the multiple lower molds 8 is fixed with a fixing plate 16 by bolts. The bottom of each of the multiple fixing plates 16 is threaded with a threaded rod 19. One end of each of the multiple threaded rods 19 passes through the fixing plate 16 and is fixed with a knob for easy rotation of the threaded rod 19 by bolts. By using the knob, the threaded rod 19 can be rotated more conveniently, making it easier to rotate the threaded rod 19.

[0028] The lower ends of multiple threaded rods 19 are rotatably connected to insert blocks 17 via bearings. The tops of multiple base plates 11 are fixed with fixing blocks by bolts. The top of the fixing blocks has slots 18 that engage with the insert blocks 17. By rotating the threaded rods 19, the threaded rods 19 drive the insert blocks 17 to move downwards, so that the insert blocks 17 are inserted into the slots 18. This achieves rapid fixing of the lower mold 8, avoids the problem of the lower mold 8 and the upper mold 7 moving during use, which would affect the production of the workpiece, and greatly improves the stability of the mold during use.

[0029] Working principle: When work is required, the motor is started, and the output shaft of the motor drives multiple upper dies 7 and multiple lower dies 8 to rotate simultaneously. The upper dies 7 and lower dies 8 to be used are rotated to the lower part of the pushing mechanism, thereby realizing the rapid switching of dies. Then, the threaded rod 19 is rotated, and the threaded rod 19 drives the insert block 17 to move downward, so that the insert block 17 is inserted into the slot 18, thereby quickly fixing the lower die 8. Finally, the cylinder 3 is started, and the piston rod of the cylinder 3 extends to drive the pressure plate 2 to move downward. The pressure plate 2 pushes the upper die 7 to move downward, so that the upper die 7 and the lower die 8 fit together. At the same time, the insert rod 13 is inserted into the limiting hole 5, thereby processing the workpiece.

[0030] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold-changing structure for rapid mold switching, comprising a base plate (11), characterized in that, The top of the base plate (11) is rotatably connected to a connecting shaft (9), and the bottom of the base plate (11) is fixedly connected to a reduction motor. The output shaft of the reduction motor passes through the base plate (11) and is fixed to the connecting shaft (9). The connecting shaft (9) is fixedly connected to multiple lower molds (8) on the outer circumference of the top of the base plate (11). Multiple upper molds (7) are evenly slidably connected to the outer circumference of the connecting shaft (9), and the multiple upper molds (7) correspond one-to-one with the lower molds (8). The top of the connecting shaft (9) is fixedly connected to a top plate (6). Multiple tension springs (15) are provided between the upper molds (7) and the top plate (6). One end of each pair of adjacent tension springs (15) is fixed to the upper mold (7), and the other end is fixed to the top plate (6). The top of the base plate (11) is provided with a pushing mechanism to push one of the upper molds (7) downward.

2. The mold changing structure for rapid mold switching according to claim 1, characterized in that, The pushing mechanism includes a support frame (1) fixedly connected to the top of the base plate (11), a cylinder (3) fixedly connected to the top of the support frame (1), and the piston rod of the cylinder (3) passes through the support frame (1) and is fixedly connected to a pressure plate (2).

3. The mold changing structure for rapid mold switching according to claim 1, characterized in that, Each of the upper molds (7) has a first protrusion (4) fixedly connected to both sides, and each of the first protrusions (4) has a limit hole (5) at the bottom. Each of the lower molds (8) has a second protrusion (12) fixedly connected to both sides, and each of the second protrusions (12) has a plug rod (13) fixedly connected to the top of the limit hole (5).

4. The mold changing structure for rapid mold switching according to claim 3, characterized in that, The top of each of the plurality of the inserts (13) is provided with a bevel (20).

5. The mold changing structure for rapid mold switching according to claim 3, characterized in that, A fixing plate (16) is fixedly connected to one side of each of the multiple lower molds (8), and a threaded rod (19) is threadedly connected to the bottom of each of the multiple fixing plates (16). A plug (17) is rotatably connected to the lower end of each of the multiple threaded rods (19) through a bearing. A fixing block is fixedly connected to the top of each of the multiple base plates (11), and a slot (18) is provided on the top of the fixing block to engage with the plug (17).

6. The mold changing structure for rapid mold switching according to claim 5, characterized in that, One end of each of the multiple threaded rods (19) passes through the fixing plate (16) and is fixedly connected to a knob that facilitates the rotation of the threaded rod (19).

7. The mold changing structure for rapid mold switching according to claim 1, characterized in that, Each of the tension springs (15) is fitted with a damping telescopic rod (14), and one end of the damping telescopic rod (14) is fixed to the top plate (6), while the other end is fixed to the upper mold (7).

8. The mold changing structure for rapid mold switching according to claim 7, characterized in that, The top of the base plate (11) is fixedly connected to a slide rail (10) that makes the rotation of multiple lower molds (8) smoother.

Images