Die fixing structure of four-column rapid stretching oil press

Abstract

The utility model discloses a die fixing structure of a four-column rapid stretching oil press, and relates to the technical field of oil presses. Comprising a U-shaped support, a nut is welded to the right side of the U-shaped support, the right side of the U-shaped support is in threaded connection with a threaded rod through the nut, an operating hand wheel is installed at the head end of the threaded rod in a threaded mode, and a supporting block is embedded in the U-shaped support. According to the die fixing structure of the four-column rapid stretching oil press, due to the fact that threaded transmission is achieved between the threaded rod and the nut, the threaded rod can be converted into linear motion by rotating the threaded rod, due to the fact that the L-shaped pressing plate is hinged to the supporting block, the threaded rod moving transversely can drive the upper portion of the L-shaped pressing plate to press downwards, and therefore pressing and fixing of a die are achieved; and meanwhile, the L-shaped pressing plate is simple and convenient to disassemble and assemble, the die can be disassembled and assembled only by reversely rotating the threaded rod and driving the upper portion of the L-shaped pressing plate to tilt upwards, the time and labor cost for replacing the die are reduced through the design, and the clamping flexibility and applicability are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press technology, specifically to a mold fixing structure for a four-column rapid stretching hydraulic press. Background Technology

[0002] A four-column hydraulic press is a mechanical device that uses the static pressure of hydraulic oil delivered by an oil pump to process products made of metal, plastic, rubber, wood, powder, etc. It is often used in pressing and forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, deep drawing of thin plates, powder metallurgy, press fitting, etc. Before stretching the workpiece, the mold needs to be fixed.

[0003] In the existing technology, the upper and lower dies of traditional four-column rapid stretching hydraulic presses are mostly installed and fixed with screws. The disassembly and assembly process is cumbersome, and the screws are prone to deformation and damage, which brings inconvenience to the disassembly and assembly process. Moreover, the screw hole size used for fixing is fixed, which makes it difficult to meet the installation and use of upper and lower dies of different specifications. Utility Model Content

[0004] This utility model provides a four-column rapid stretching hydraulic press mold fixing structure to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a four-column rapid stretching hydraulic press mold fixing structure, including a U-shaped support, a nut welded to the right side of the U-shaped support, and a threaded rod threadedly connected to the nut, an operating handwheel threadedly installed at the head end of the threaded rod, a support block embedded in the U-shaped support, and an L-shaped pressure plate hinged to the top of the support block by a pin, a bearing embedded in the lower part of the L-shaped pressure plate, and a bushing slidably sleeved at the tail end of the threaded rod, with the bushing tightly fitted to the bearing.

[0006] Furthermore, the U-shaped support is provided with fixing holes, and the fixing holes are located around the perimeter of the U-shaped support.

[0007] Furthermore, the support block is provided with a through hole, through which one end of the threaded rod passes.

[0008] Furthermore, the top of the support block is provided with a hinge groove, and the hinge groove is hinged to the L-shaped pressure plate by a pin.

[0009] Furthermore, the inner ring wall of the bushing is provided with a flat key, and the flat key is located on the upper and lower sides of the bushing.

[0010] Furthermore, the tail of the threaded rod is provided with a keyway, and the keyway is located on its upper and lower sides, and the flat key is inserted into the keyway.

[0011] Compared with the prior art, this utility model provides a four-column rapid stretching hydraulic press mold fixing structure, which has the following beneficial effects:

[0012] The mold fixing structure of this four-column rapid stretching hydraulic press features a threaded drive between the threaded rod and the nut. By rotating the threaded rod, it can be converted into linear motion. Furthermore, since the L-shaped pressure plate and the support block are hinged, the laterally moving threaded rod can drive the upper part of the L-shaped pressure plate to press downwards, thereby achieving the clamping and fixing of the mold. At the same time, the disassembly and assembly of the L-shaped pressure plate is simple and convenient. Simply rotate the threaded rod in the opposite direction to drive the upper part of the L-shaped pressure plate to tilt upwards, and the mold can be disassembled or assembled. This design reduces the time and labor costs for changing molds and improves the flexibility and applicability of clamping. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a top view of the present invention.

[0016] In the diagram: 1. U-shaped support; 2. Nut; 3. Threaded rod; 4. Operating handwheel; 5. Support block; 6. L-shaped pressure plate; 7. Bearing; 8. Bushing; 9. Fixing hole; 10. Through hole; 11. Hinge groove; 12. Flat key; 13. Keyway. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3This utility model discloses a four-column rapid stretching hydraulic press mold fixing structure, including a U-shaped support 1. A nut 2 is welded to the right side of the U-shaped support 1, and a threaded rod 3 is threadedly connected to the nut 2. An operating handwheel 4 is threadedly installed at the head end of the threaded rod 3. A support block 5 is embedded on the U-shaped support 1, and an L-shaped pressure plate 6 is hinged to the top of the support block 5 by a pin. A bearing 7 is embedded in the lower part of the L-shaped pressure plate 6. A bushing 8 is slidably sleeved at the tail end of the threaded rod 3, and the bushing 8 is tightly fitted with the bearing 7. The threaded rod 3 and nut 2 are connected by a threaded drive. By rotating the threaded rod 3, it can be converted into linear motion. Since the L-shaped pressure plate 6 and the support block 5 are hinged, the laterally moving threaded rod 3 can drive the upper part of the L-shaped pressure plate 6 to press down, thereby achieving the clamping and fixing of the mold. At the same time, the disassembly and assembly of the L-shaped pressure plate 6 is simple and convenient. Just rotate the threaded rod 3 in the opposite direction to drive the upper part of the L-shaped pressure plate 6 to tilt upward, and the disassembly and assembly of the mold can be completed. This design reduces the time and labor cost of changing molds and improves the flexibility and applicability of clamping.

[0019] Specifically, the U-shaped support 1 is provided with fixing holes 9, and the fixing holes 9 are located around the U-shaped support 1.

[0020] In this embodiment, the U-shaped support 1 is pre-fixed on the hydraulic press by using the fixing hole 9 and the internal hex bolt.

[0021] Specifically, the support block 5 is provided with a through hole 10, and one end of the threaded rod 3 passes through the through hole 10.

[0022] In this embodiment, the through hole 10 is used to provide positioning and guidance, making the threaded rod 3 more stable when it moves.

[0023] Specifically, the top of the support block 5 is provided with a hinge groove 11, and the hinge groove 11 is hinged to the L-shaped pressure plate 6 by a pin.

[0024] In this embodiment, the L-shaped pressure plate 6 is hinged to the support block 5 by means of the hinge groove 11 and the pin.

[0025] Specifically, the inner ring wall of the bushing 8 is provided with a flat key 12, and the flat key 12 is located on the upper and lower sides of the bushing 8.

[0026] In this embodiment, the flat key 12 is a limiting structure used to position the bushing 8.

[0027] Specifically, the tail of the threaded rod 3 is provided with a keyway 13, and the keyway 13 is located on its upper and lower sides, and the flat key 12 is inserted into the keyway 13.

[0028] In this embodiment, the connection between the keyway 13 and the flat key 12 makes the L-shaped pressure plate 6 with the bushing 8 installed and the threaded rod 3 more reliable.

[0029] In use, the U-shaped support 1 is pre-fixed to the hydraulic press. Since the threaded rod 3 and nut 2 are connected by a threaded drive, rotating the threaded rod 3 (setting the rotation direction to the positive direction causes the tail end of the threaded rod 3 to move to the right) converts it into linear motion. Because the L-shaped pressure plate 6 and support block 5 are hinged, the laterally moving threaded rod 3 can cause the upper part of the L-shaped pressure plate 6 to press downwards (the threaded rod 3 moving to the right causes the lower part of the L-shaped pressure plate 6 to move to the right as well, causing the upper part of the L-shaped pressure plate 6 to press downwards). The L-shaped pressure plate 6 is easy to assemble and disassemble, and can be clamped and fixed. It can be easily assembled and disassembled by simply rotating the threaded rod 3 in the opposite direction (the threaded rod 3 is rotated in the opposite direction and the tail end of the threaded rod 3 moves to the left), which will cause the upper part of the L-shaped pressure plate 6 to tilt upward (the threaded rod 3 moving to the left will cause the lower part of the L-shaped pressure plate 6 to move to the left, so that the upper part of the L-shaped pressure plate 6 tilts upward). This design reduces the time and labor cost of changing molds and improves the flexibility and applicability of clamping.

[0030] In summary, the mold fixing structure of this four-column rapid stretching hydraulic press utilizes a threaded transmission between the threaded rod 3 and the nut 2. By rotating the threaded rod 3, it can be converted into linear motion. Furthermore, since the L-shaped pressure plate 6 and the support block 5 are hinged, the laterally moving threaded rod 3 can drive the upper part of the L-shaped pressure plate 6 to press downwards, thereby achieving the clamping and fixing of the mold. At the same time, the disassembly and assembly of the L-shaped pressure plate 6 is simple and convenient. Simply rotate the threaded rod 3 in the opposite direction to drive the upper part of the L-shaped pressure plate 6 to tilt upwards to complete the disassembly and assembly of the mold. This design reduces the time and labor costs for changing molds and improves the flexibility and applicability of clamping.

[0031] 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 mold fixing structure for a four-column rapid stretching hydraulic press, comprising a U-shaped support (1), characterized in that: A nut (2) is welded to the right side of the U-shaped support (1), and a threaded rod (3) is threadedly connected to the nut (2). An operating handwheel (4) is threadedly installed at the head end of the threaded rod (3). A support block (5) is embedded on the U-shaped support (1), and an L-shaped pressure plate (6) is hinged to the top of the support block (5) by a pin. A bearing (7) is embedded in the lower part of the L-shaped pressure plate (6). A bushing (8) is slidably sleeved at the tail end of the threaded rod (3), and the bushing (8) is tightly fitted with the bearing (7).

2. The four-column rapid stretching hydraulic press mold fixing structure according to claim 1, characterized in that: The U-shaped support (1) is provided with fixing holes (9), and the fixing holes (9) are located around the U-shaped support (1).

3. The four-column rapid stretching hydraulic press mold fixing structure according to claim 1, characterized in that: The support block (5) is provided with a through hole (10), and one end of the threaded rod (3) passes through the through hole (10).

4. The four-column rapid stretching hydraulic press mold fixing structure according to claim 1, characterized in that: The top of the support block (5) is provided with a hinge groove (11), and the hinge groove (11) is hinged to the L-shaped pressure plate (6) by a pin.

5. The four-column rapid stretching hydraulic press mold fixing structure according to claim 1, characterized in that: The inner ring wall of the bushing (8) is provided with a flat key (12), and the flat key (12) is located on the upper and lower sides of the bushing (8).

6. The four-column rapid stretching hydraulic press mold fixing structure according to claim 5, characterized in that: The threaded rod (3) has a keyway (13) at its tail end, and the keyway (13) is located on its upper and lower sides. The flat key (12) is inserted into the keyway (13).

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