A quick mold changing structure for a hydraulic press

Abstract

This utility model relates to the field of hydraulic press technology, and more particularly to a quick mold change structure for a hydraulic press. It includes a heating plate, a movable worktable, a lower crossbeam, and a slider. The movable worktable is slidably disposed on the top surface of the lower crossbeam. It also includes a fixing component and quick-connect couplings. The heating plate comprises an upper heating plate and a lower heating plate. The fixing component is symmetrically fixed to both sides of the upper and lower heating plates, and the quick-connect couplings are fixed to one side of each heating plate. This utility model uses a detachable heating plate module. The fixing component of the heating plate has a simple structure and is easy to disassemble. Furthermore, the heating plate oil pipe is connected to the oil supply pipe using quick-connect couplings, facilitating disassembly, saving time, and reducing labor intensity.

Description

Technical Field

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

[0002] In the field of composite material molding, hydraulic presses are core processing equipment. They apply heat and pressure to raw materials through integrated heating molds, causing the materials to fuse and initially form a predetermined shape, which is then processed to meet the final product requirements. Currently, most mainstream hydraulic presses adopt an integrated heating mold structure, where the heating plate and the forming mold are rigidly connected as a single component mounted on the hydraulic press. This structure is suitable for mass production of a single product, but it reveals significant drawbacks in production scenarios requiring frequent mold changes to adapt to multi-variety, small-batch orders. When switching product specifications, operators must completely disassemble the entire bulky heating mold assembly with integrated heating functions from the equipment, and then hoist, position, and fix the new heating mold assembly. This process involves complex mechanical disassembly and assembly, alignment calibration, and electrical connections, typically taking 15-30 minutes and relying on skilled workers. This not only results in low mold-changing efficiency and high labor intensity but also leads to prolonged equipment downtime, severely restricting production flexibility.

[0003] This utility model adopts a detachable heating plate module. After the raw material is heated on the heating plate, it is only necessary to remove the heating plate and then install the mold to press the raw material into shape. The fixing component of the heating plate has a simple structure and is easy to disassemble. The oil pipe of the heating plate is connected by a quick-connect fitting, which is convenient to disassemble, saves time and reduces labor intensity. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a quick mold changing structure for a hydraulic press.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick mold-changing structure for a hydraulic press includes a heating plate, a movable worktable, a lower crossbeam, and a slider. The movable worktable is slidably disposed on the top surface of the lower crossbeam. The structure also includes a fixing component and a quick-connect connector. The heating plate includes an upper heating plate and a lower heating plate. The fixing component is symmetrically fixed on both sides of the upper and lower heating plates. The quick-connect connector is fixed on one side of the heating plate and the lower heating plate.

[0006] Furthermore, the fixing component includes a fixing post, a fixing nut, a T-block, and a fixing pin. The fixing post is a coaxial cylinder with different diameters, smaller at the top and larger at the bottom. The lower half of the fixing post is a large cylinder, and the upper half is a small cylinder. The surface is threaded, and the fixing nut is threaded onto the small cylinder.

[0007] Furthermore, the T-shaped horizontal edge of the T-shaped block is fixed to the side of the heating plate, and the T-shaped vertical edge of the T-shaped block is placed inside the bottom of the large cylinder of the fixing column. A fixing pin passes through and connects the large cylinder of the fixing column and the T-shaped vertical edge of the T-shaped block.

[0008] Furthermore, the upper heating plate is fixed to the bottom surface of the slider, and the lower heating plate is fixed to the top surface of the movable worktable. The slider and the movable worktable are respectively provided with multiple fixing blocks. The fixing blocks are cuboids, with one end fixed to the bottom side of the slider and the top side of the movable worktable, and the other end provided with a U-shaped opening. The fixing components work together with the fixing blocks.

[0009] Furthermore, heat insulation plates are fixedly connected to all four sides of the heating plate. The heat insulation plates have openings one and two, and the fixing component passes through opening one to be fixedly connected to the heating plate.

[0010] Furthermore, a flange is provided on one side of the heating plate. The flange passes through the second opening of the heat insulation plate. One side of the flange is fixedly connected to the heat-conducting oil channel provided inside the heating plate, and the other side is fixedly connected to one end of the oil pipe. The other end of the oil pipe is fixedly connected to a quick-connect fitting.

[0011] Compared with existing technologies, the quick mold changing structure for a hydraulic press provided by this utility model has the following advantages: 1. The heating plate is detachable and uses a quick-connect connector to connect the oil supply pipe, allowing for disassembly by a single person; 2. The heating plate fixing assembly has a simple structure and is easy to disassemble, reducing manual labor intensity; 3. After the heating plate is removed, a cold mold can be installed immediately for pressing. At the same time, the removed heating plate can be used to preheat the next batch of raw materials offline. This design simplifies the mold change process, reduces time costs, and improves work efficiency. Attached Figure Description

[0012] Figure 1 This is a front view of the present utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention from another perspective; Figure 4 This is a three-dimensional structural diagram of the fixing component of this utility model; In the diagram: 1. Fixed component, 11. Fixed column, 12. Fixed nut, 13. T-block, 14. Fixed pin, 21. Upper heating plate, 22. Lower heating plate, 3. Moving worktable, 4. Lower crossbeam, 5. Slider, 6. Quick connector, 7. Oil pipe, 8. Flange, 9. Heat insulation plate, 10. Fixed block. Detailed Implementation

[0013] 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.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] Example 1, as shown in the accompanying drawings. Figures 1-4 As shown, a quick mold changing structure for a hydraulic press includes a heating plate, a movable worktable 3, a lower crossbeam 4, and a slider 5. The movable worktable 3 is slidably disposed on the top surface of the lower crossbeam 4. The press also includes a fixing component 1 and a quick-connect connector 6. The heating plate includes an upper heating plate 21 and a lower heating plate 22. The fixing component 1 is symmetrically fixed on both sides of the upper heating plate 21 and the lower heating plate 22, and the quick-connect connector 6 is fixed on one side of the upper heating plate 21 and the lower heating plate 22, respectively.

[0016] The fixing component 1 includes a fixing post 11, a fixing nut 12, a T-block 13, and a fixing pin 14. The fixing post 11 is a coaxial cylinder with different diameters, smaller at the top and larger at the bottom. The lower half of the fixing post 11 is a large cylinder, and the upper half of the fixing post 11 is a small cylinder. The surface is provided with threads, and the fixing nut 12 is threaded onto the small cylinder.

[0017] The T-shaped horizontal edge of the T-shaped block 13 is fixed to the side of the heating plate, and the T-shaped vertical edge of the T-shaped block 13 is placed inside the bottom of the large cylinder of the fixing column 11. A fixing pin 14 passes through and connects the large cylinder of the fixing column 11 and the T-shaped vertical edge of the T-shaped block 13.

[0018] The upper heating plate 21 is fixed to the bottom surface of the slider 5, and the lower heating plate 22 is fixed to the top surface of the movable worktable 3. Multiple fixing blocks 10 are provided on the slider 5 and the movable worktable 3 respectively. The fixing block 10 is a cuboid, with one end fixed to the bottom side of the slider 5 and the top side of the movable worktable 3 respectively, and the other end has a U-shaped opening. The fixing component 1 works in conjunction with the fixing block 10.

[0019] In this embodiment, the fixing component 1 cooperates with the fixing block 10 to fix the upper heating plate 21 to the bottom surface of the slider 5 and the lower heating plate 22 to the top surface of the movable worktable 3.

[0020] The heating plate is fixed as follows: The fixing post 11 can rotate around the fixing pin 14. When the fixing post 11 rotates to the vertical position in the direction of the slider 5 or the moving worktable 3, the small cylindrical part of the fixing post 11 just falls at the center of the U-shaped opening of the fixing block 10. At this time, the small cylindrical part of the fixing post 11 is threadedly connected with the fixing nut 12, and the fixing assembly 1 and the heating plate are fixed on the fixing block 10.

[0021] The heating plate can be removed from its fixed position as follows: Method 1: Simply remove the fixing nut 12. Method 2: The lengths of the large and small cylinders of the fixing post 11 can be adjusted according to the actual situation. When the small cylinder is long enough, simply loosen the fixing nut 12 until the fixing post 11 rotates to a horizontal position where it is no longer obstructed by the fixing nut 12. Comparison of the two methods: Method 1 does not require the small cylinder to be as long as Method 2, but the removed fixing nut 12 needs to be stored properly to avoid loss. Method 2 only requires loosening the fixing nut 12, avoiding its loss, but it has requirements on the length of the fixing post 11 and the small cylinder, and the material cost is higher than Method 1.

[0022] In this embodiment, the fixed component 1 has a simple structure, is easy to install and disassemble, and can be completed by a single person, thus reducing the workload of personnel.

[0023] In Example 2, heat insulation plates 9 are fixedly connected to each of the four sides of the heating plate. The heat insulation plates 9 have openings one and two. The fixing component 1 passes through opening one and is fixedly connected to the heating plate.

[0024] A flange 8 is also provided on one side of the heating plate. The flange 8 passes through the second opening of the heat insulation plate 9. One side of the flange 8 is fixedly connected to the heat conduction oil channel provided inside the heating plate, and the other side is fixedly connected to one end of the oil pipe 7. The other end of the oil pipe 7 is fixedly connected to a quick connector 6.

[0025] In this embodiment, the heat insulation plate 9 mainly serves to insulate heat, reducing heat loss from the heating plate and preventing workers from being burned by the heating plate when fixing or removing it. One end of the oil pipe 7 is fixedly connected to the heat-conducting oil channel inside the heating plate via a flange 8, and the other end is connected to the oil delivery pipe via a quick-connect fitting. The oil pipe 7 can be a flexible hose, a rigid pipe, or a combination of both, depending on the installation conditions and the actual equipment situation. In this embodiment, the oil pipe 7 connecting to the lower heating plate 22 is a rigid pipe (precision cold-drawn tube), while the oil pipe 7 connecting to the upper heating plate 21 is a combination of a flexible hose (high-temperature metal flexible hose) and a rigid pipe (precision cold-drawn tube). The advantage of using a quick-connect fitting 6 to connect the oil pipe 7 to the oil delivery pipe is that the quick-connect fitting 6 is easy to connect and disconnect, simple to operate, and reduces assembly and disassembly time; a single person can complete the assembly and disassembly of the oil pipe 7, reducing labor costs and workload.

[0026] In Example 3, multiple sets of connecting plate bolt holes are symmetrically arranged on both sides of the upper heating plate 21 and the lower heating plate 22. The two connecting plate bolt holes of the upper heating plate 21 and the two connecting plate bolt holes of the lower heating plate 22 are a set of connecting plate bolt holes. Each set of connecting plate bolt holes is connected by a connecting plate bolt to fix the upper heating plate 21 and the lower heating plate 22 together.

[0027] The working steps of this utility model are as follows: S1. Install the upper heating plate 21: Use multiple connecting plates to bolt the bolt holes of each group of connecting plates to fix the upper heating plate 21 and the lower heating plate 22 together. After the moving worktable 3 is moved to the outside of the hydraulic press, the lower heating plate 22 is fixedly connected to the moving worktable 3 through the fixing component 1. S2. Install the lower heating plate 22: Move the worktable 3 to move the upper heating plate 21 and the lower heating plate 22 into the hydraulic press. The hydraulic press power mechanism drives the slider 5 to move down until the bottom surface of the slider 5 just contacts the top surface of the upper heating plate 21. At this time, fix the upper heating plate 21 to the slider 5 through the fixing component 1. Then connect the quick-connect joints 6 of the upper heating plate 21 and the lower heating plate 22 to the oil supply pipe respectively. Then remove the connecting plate and cancel the fixed connection between the upper heating plate 21 and the lower heating plate 22. S3. Heating raw materials: Slider 5 drives the upper heating plate 21 to move upward back to the initial position. After placing the raw materials on the top surface of the lower heating plate 22, slider 5 drives the upper heating plate 21 to move downward to the heating position. The upper heating plate 21 and the lower heating plate 22 heat the raw materials to the set temperature. S4. Transfer raw materials: After the raw materials are heated, the slider 5 drives the upper heating plate 21 to move upward back to the initial position, and then transfers the raw materials to the lower mold. S5. Disassemble the upper heating plate 21: The slider 5 drives the upper heating plate 21 down to the bottom surface of the upper heating plate 21 just in contact with the top surface of the lower heating plate 22. The connecting plate is fixedly connected to the bolt holes of the connecting plate, and the upper heating plate 21 and the lower heating plate 22 are fixedly connected together. The fixed connection between the slider 5 and the upper heating plate 21 fixing assembly 1 is removed. Then the quick connector 6 of the upper heating plate 21 and the lower heating plate 22 is disconnected from the oil supply pipe. S6. Remove the lower heating plate 22: The slider 5 moves upward back to the initial position. After the moving worktable 3 moves the upper heating plate 21 and the lower heating plate 22 to the outside of the hydraulic press, the fixed connection between the lower heating plate 22 fixing component 1 and the moving worktable 3 is canceled. At this time, the entire heating plate can be transferred away from the moving worktable 3. S7. Raw material forming: The lower mold and upper mold containing the raw material are installed in the T-slots of the moving worktable 3 and the slider 5, respectively. After the moving worktable 3 moves the lower mold into the hydraulic press, the slider 5 moves the upper mold down to press the raw material until the raw material is formed.

[0028] The S6 process also includes utilizing the residual heat from the disassembled heating plate to heat the next batch of raw materials offline. The advantages of this are: reduced heating time and energy consumption, improved work efficiency, and reduced energy costs.

[0029] Different molds can also be installed in the S7 to achieve the purpose of molding different products, making full use of one hydraulic press to complete the pressing work of multiple products.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick mold-changing structure for a hydraulic press, comprising a heating plate, a movable worktable (3), a lower crossbeam (4), and a slider (5), wherein the movable worktable (3) is slidably disposed on the top surface of the lower crossbeam (4), characterized in that: It also includes a fixing component (1) and a quick connector (6). The heating plate includes an upper heating plate (21) and a lower heating plate (22). The fixing component (1) is symmetrically fixed on both sides of the upper heating plate (21) and the lower heating plate (22), and the quick connector (6) is fixed on one side of the upper heating plate (21) and the lower heating plate (22).

2. The quick die change structure of a hydraulic machine according to claim 1, wherein: The fixing component (1) includes a fixing post (11), a fixing nut (12), a T-block (13), and a fixing pin (14). The fixing post (11) is a coaxial cylinder with different diameters, smaller at the top and larger at the bottom. The lower half of the fixing post (11) is a large cylinder, and the upper half of the fixing post (11) is a small cylinder. The surface is provided with threads, and the fixing nut (12) is threaded onto the small cylinder.

3. The quick die change structure of a hydraulic machine according to claim 2, wherein: The T-shaped horizontal edge of the T-shaped block (13) is fixed to the side of the heating plate, and the T-shaped vertical edge of the T-shaped block (13) is placed inside the bottom of the large cylinder of the fixing column (11). A fixing pin (14) passes through and connects the large cylinder of the fixing column (11) and the T-shaped vertical edge of the T-shaped block (13).

4. The quick die change structure of a hydraulic machine according to claim 1, wherein: The upper heating plate (21) is fixed on the bottom surface of the slider (5), and the lower heating plate (22) is fixed on the top surface of the movable worktable (3). Multiple fixing blocks (10) are provided on the slider (5) and the movable worktable (3). The fixing block (10) is a cuboid, with one end fixed to the bottom side of the slider (5) and the top side of the movable worktable (3), and the other end having a U-shaped opening. The fixing component (1) works in conjunction with the fixing block (10).

5. The quick die change structure of a hydraulic machine according to claim 1, wherein: The upper heating plate (21) and the lower heating plate (22) are each fixedly connected to a heat insulation plate (9) on their four sides. The heat insulation plate (9) has an opening one and an opening two. The fixing component (1) passes through the opening one and is fixedly connected to the heating plate.

6. The quick die change structure of a hydraulic machine according to claim 5, wherein: A flange (8) is also provided on one side of the heating plate. The flange (8) passes through the second opening of the heat insulation plate (9). One side of the flange (8) is fixedly connected to the heat-conducting oil channel provided inside the heating plate, and the other side is fixedly connected to one end of the oil pipe (7). The other end of the oil pipe (7) is fixedly connected to a quick-connect fitting (6).

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