Synchronous cylinder die cushion device

Abstract

The utility model discloses a synchronous air cylinder die cushion device which comprises a base and a die cushion assembly, the die cushion assembly comprises a top plate, an air cylinder connecting frame and a plurality of air cylinders, a supporting frame is welded on the inner wall of the base, the air cylinder connecting frame is fixed with the supporting frame, the air cylinders are vertically fixed on the air cylinder connecting frame, and the end portions of piston rods of the air cylinders are fixed with the top plate. The supporting frame is provided with a synchronous assembly used for guaranteeing synchronous driving of the air cylinders. The device has the advantages that the synchronism among a plurality of cylinders is improved, the maintenance cost of equipment is reduced, and the long-term economy of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of punch press die pads, in particular to a synchronous cylinder die pad device. Background Art

[0002] With the development of stamping technology, in order to prevent parts from being pressed and attached to the lower die and to achieve safe demolding, stamping equipment is usually equipped with a cylinder die pad device. When the upper and lower dies are opened, the piston rod of the cylinder drives the top plate to move upward. A ejector rod is installed on the top plate. The ejector rod passes through the platen into the lower die to eject the parts and achieve rapid demolding. At the same time, for products that are prone to cracking, cylinder die pads are used to achieve a buffering effect to ensure stamping quality and surface requirements. At present, there are many cylinder die pad devices on the market that have achieved basic support and buffering functions. When the ejection or buffering force requirements are relatively large, the volume of a single cylinder tends to increase, especially when the height of the equipment is limited by space, and it cannot effectively meet the requirements.

[0003] Chinese utility model patent number CN208734638U discloses a one-plate, two-cylinder die pad mechanism, comprising: a cylinder mounting seat, a connecting base plate, a die pad plate mounted on the connecting base plate, and a first cylinder and a second cylinder respectively mounted on the bottom of the cylinder mounting seat. The die pad plate is used to connect to an external mold. The cylinder mounting seat is mounted with multiple guide posts, and the connecting base plate is provided with a guide sleeve that slides with the guide posts. The first cylinder and the second cylinder have the same structure. The connecting base plate includes an upper base plate and a lower base plate. The die pad plate is mounted on the upper base plate, and multiple cushions are provided on both sides of the upper base plate. The first piston in the first cylinder is connected to the lower base plate via a connecting sleeve. Although the overall structure of this one-plate, two-cylinder die pad mechanism is compact in height and has a large load-bearing capacity, this design fails to effectively solve the cylinder synchronization problem and has high maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a synchronous cylinder die pad device, which can realize the synchronous operation of multiple cylinder die pads under the conditions of compact structure and large bearing capacity, thereby ensuring the quality of finished products.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a synchronous cylinder die pad device, including a base and a die pad assembly, the die pad assembly including a top plate, a cylinder connecting frame and multiple cylinders, the inner wall of the base is welded with a support frame, the cylinder connecting frame is fixed to the support frame, the cylinder is vertically fixed on the cylinder connecting frame, the end of the piston rod of the cylinder is fixed to the top plate, and a synchronization assembly for ensuring synchronous driving of the cylinder is provided on the support frame.

[0006] Furthermore, at least two guide rods are fixed to the lower end surface of the top plate, and the support frame is fixed with guide seats whose positions and numbers correspond to the guide rods. The guide rods pass through the guide seats one by one and slide up and down with the guide seats.

[0007] Furthermore, there are two guide rods, which are located at both ends of the top plate.

[0008] Furthermore, the synchronization assembly includes a synchronization rod and synchronization gears coaxially fixed at both ends of the synchronization rod, a bearing seat is fixedly provided on the support frame, the synchronization rod is rotatably connected to the bearing seat, a rack is integrally provided on the guide rod, and the synchronization gears are meshed with the rack in a one-to-one correspondence.

[0009] Furthermore, oil-containing copper is provided in the guide seat, and the guide rod passes through the oil-containing copper.

[0010] Furthermore, a cylinder gasket is fixedly provided on the upper end of the cylinder body, and a top plate gasket is fixedly provided on the lower end surface of the top plate. The position and quantity of the top plate gaskets correspond to those of the cylinder gasket, and the piston rod of the cylinder passes through the cylinder gasket and is fixed to the top plate gasket.

[0011] Furthermore, the opposing surfaces of the top plate gasket and the cylinder gasket are heat-treated to increase surface strength.

[0012] Compared with the existing technology, the advantage of the present invention is that by setting a synchronization component, the synchronization between multiple cylinders is significantly improved, the horizontality of the top plate in the die pad assembly during the up and down movement is ensured, and the quality problems of the finished product are reduced; and a cylinder pad and a top plate pad that are easy to replace or adjust are set between the cylinder body and the top plate. In the process of the top plate moving up and down, the contact between the cylinder pad and the top plate pad replaces the traditional contact wear between the top plate and the cylinder body, so there is no need to replace the entire cylinder or top plate, which greatly reduces the maintenance cost of the equipment and improves the long-term economy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cooperation between the synchronization component and the die pad component of the utility model;

[0015] Figure 3 It is a cross-sectional view of the present utility model. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1-3As shown, a synchronized cylinder die pad device includes a base 1, a die pad assembly 2, and a synchronized assembly 4. The die pad assembly 2 includes a top plate 21, a cylinder connecting frame 22, and multiple cylinders 23. A support frame 3 is welded to the inner wall of the base 1, and the cylinder connecting frame 22 is fixed to the support frame 3. The cylinders 23 are vertically fixed to the cylinder connecting frame 22, and the ends of the piston rods 24 of the cylinders 23 are fixed to the top plate 21. After long-term use, the top plate 21 is easily worn or even damaged due to the collision between the up and down movement of the top plate 21 and the cylinder body of the cylinder 23. In order to reduce maintenance costs and improve the long-term economic efficiency of the equipment, a cylinder gasket 6 is fixedly provided on the upper end of the cylinder body of the cylinder 23, and a top plate gasket 5 is fixedly provided on the lower end surface of the top plate 21. The position and number of the top plate gaskets 5 correspond to the cylinder gasket 6. The piston rod 24 of the cylinder 23 passes through the cylinder gasket 6 and is fixed to the top plate gasket 5. The cylinder gasket 6 and the top plate gasket 5 are easier to replace or adjust than the entire cylinder 23 or the top plate 21. In order to extend the service life of the cylinder gasket 6 and the top plate gasket 5 In order to increase the service life, heat treatment is performed on the opposing surfaces of the cylinder gasket 6 and the top plate gasket 5 to increase the surface strength; two guide rods 25 are fixed to the lower end surfaces of both ends of the top plate 21, and two guide seats 26 are fixed on the support frame 3. The guide seats 26 and the guide rods 25 are in a one-to-one correspondence. The cooperation between the guide seats 26 and the guide rods 25 provides a guiding effect for the movement of the top plate 21; an oil-containing copper alloy 261 is provided in the guide seat 26, and the guide rod 25 passes through the oil-containing copper alloy 261 and slides up and down in the guide seat 26. The oil-containing copper alloy 261 makes the sliding of the guide rod 25 smoother and reduces friction.

[0018] The synchronization assembly 4 includes a synchronization rod 41 and synchronization gears 42 coaxially fixed to both ends of the synchronization rod 41. A bearing seat 43 is fixedly provided on the support frame 3. The synchronization rod 41 is rotatably connected to the bearing seat 43. A rack 44 is integrally provided on the guide rod 25. The synchronization gears 42 mesh with the rack 44 in a one-to-one correspondence. Due to the provision of multiple cylinders 23, inconsistent ejection strokes are prone to occur, further leading to quality problems in the product. When the cylinder 23 with more air intake first pushes the top plate 21 upward, at this time, the guide rod 25 closer to the cylinder 23 with more air intake moves upward first, and the synchronization gear 42 meshed with it is driven to rotate. The synchronization rod 41 also rotates, driving the synchronization gear 42 on the other side to rotate synchronously, so that the guide rod 25 on the other side also moves upward at the same speed, pushing the top plate 41, making the top plate 41 in a horizontal state, and achieving synchronous movement.

[0019] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field fall within the protection scope of the present invention.

Claims

1. A synchronous cylinder die pad device, comprising a base and a die pad assembly, wherein the die pad assembly comprises a top plate, a cylinder connecting frame, and a plurality of cylinders; a support frame is welded to the inner wall of the base, the cylinder connecting frame is fixed to the support frame, the cylinders are vertically fixed to the cylinder connecting frame, and the ends of the piston rods of the cylinders are fixed to the top plate, characterized in that: The support frame is provided with a synchronization component for ensuring synchronous driving of the cylinders.

2. A synchronous cylinder die pad device according to claim 1, characterized in that: At least two guide rods are fixed to the lower end surface of the top plate, and guide seats are fixedly provided on the support frame, and the positions and numbers of the guide seats correspond to those of the guide rods. The guide rods pass through the guide seats one by one and slide up and down with the guide seats.

3. A synchronous cylinder die pad device according to claim 2, characterized in that: There are two guide rods, which are located at both ends of the top plate.

4. A synchronous cylinder die pad device according to claim 3, characterized in that: The synchronization assembly includes a synchronization rod and synchronization gears coaxially fixed at both ends of the synchronization rod. A bearing seat is fixedly provided on the support frame. The synchronization rod is rotatably connected to the bearing seat. A rack is integrally provided on the guide rod. The synchronization gears are meshed with the rack in a one-to-one correspondence.

5. A synchronous cylinder die pad device according to claim 2, characterized in that: Oil-containing copper is arranged in the guide seat, and the guide rod passes through the oil-containing copper.

6. A synchronous cylinder die pad device according to claim 1, characterized in that: A cylinder gasket is fixedly provided on the upper end of the cylinder body of the cylinder, and a top plate gasket is fixedly provided on the lower end surface of the top plate. The position and number of the top plate gaskets correspond to those of the cylinder gasket. The piston rod of the cylinder passes through the cylinder gasket and is fixed to the top plate gasket.

7. A synchronous cylinder die pad device according to claim 6, characterized in that: The surfaces opposite to the top plate gasket and the cylinder gasket are heat-treated to increase surface strength.

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