A punch press machine cylinder simulation device

Abstract

The application discloses a punch press machine cylinder simulation device, which comprises a frame, a spring plate and a spring for pressing the spring plate, the spring plate is slidingly connected to the frame, and the spring is arranged between the spring plate and the bottom of the frame. The spring plate can be lifted and lowered under the joint action of external pressure and the spring, has the functions of buffering and resetting, can simulate the cylinder to a certain extent, can replace the cylinder when used on the punch press machine, can contract and store energy when the punch press die closing part is pressed during die closing, and can rebound and reset when the die is opened, thereby assisting the product demolding function. The application adopts a pure mechanical structure to replace the cylinder, can save the industrial gas usage and related electric and gas circuit facility configuration, thereby more economically implements the reform on the punch press machine without the cylinder. In addition, the elastic force output of the application is continuous, and the equipment and die will not be damaged due to the pressure fluctuation, so that the work is more reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to a punch press equipment accessory device, more particularly, it relates to a punch press cylinder simulation device. BACKGROUND

[0002] In the process of developing a punch forming product, it is often necessary to test repeatedly on the punch press machine. Since the punch die is time-consuming to disassemble and assemble, the punch die is usually not easily disassembled during the test process, which results in that the punch press machine is occupied for a long time and cannot be arranged for production. On the other hand, a production enterprise usually configures many single-station punch presses. Since these punch presses are usually used for punching and cutting small pieces, the generated products or waste directly fall without the need for a cylinder to assist in product demolding. Many punch forming products have a certain shape and volume and are not suitable for demolding by blanking. Therefore, the existing single-station punch press cannot be used for punch forming products that need to be assisted by a cylinder for demolding. In this way, a large number of low-end equipment is idle, and limited high-performance equipment is occupied, which causes great disturbance to the coordination of production and development of the enterprise. Therefore, the existing single-station punch press without a cylinder must be modified by adding a cylinder to have the same or similar functions as the punch press with a cylinder. However, adding a cylinder will result in a high modification cost. The utility model patent with the publication number CN206898255U discloses a punch die cylinder unloading structure for automobile stamping parts, which comprises a die body. The die body is a hollow structure. A forming groove is formed on the die body. A first through hole is formed at the bottom of the inner wall of the forming groove. An activity plate is movably arranged in the first through hole. Two load blocks are arranged on the two sides of the activity plate. Fixed grooves are arranged on the two sides of the forming groove, and the load blocks are movably arranged in the fixed grooves. A cylinder is arranged at the bottom of the inner wall of the die body. The cylinder is connected with the activity plate through a piston rod. A first bracket is arranged on one side of the cylinder and on the inner wall of the die body. The first bracket is a hollow structure. A second bracket is movably arranged in the first bracket. The utility model has the advantages of simple structure, low production cost, and can quickly take out the formed stamping parts from the forming groove, improve the work efficiency, and meet the use requirement of the people. However, the utility model occupies the internal space of the die, and the die is complicated to disassemble and assemble. Moreover, the utility model itself has a cylinder, and therefore cannot provide meaningful reference for how to modify the single-station punch press without a cylinder. SUMMARY

[0003] The ordinary single-station punch press cylinder does not have a cylinder and does not have the function of assisting product demolding. The modification cost is high. In order to overcome these defects, the present application provides a punch press cylinder simulation device which can be installed on a machine tool without a cylinder to simulate a cylinder and give the machine tool the function of assisting product demolding.

[0004] The technical scheme of the present application is: a punch press machine cylinder simulation device, comprising a frame, a spring plate and a spring for pressing the spring plate, the spring plate is slidingly connected to the frame, and the spring is arranged between the spring plate and the bottom of the frame. The spring plate can be lifted and lowered under the combined action of external pressure and the spring, has a buffering and resetting function, can simulate a cylinder to a certain extent, and can replace the cylinder when used on a punch press machine. When the punch press die is closed, the punch press die can contract and store energy with the lower pressing part of the punch press die, and when the die is opened, the spring plate rebounds and resets to perform an auxiliary product demolding function. The present application uses a pure mechanical structure to replace the cylinder, which can save industrial gas usage and related electric and gas path facility configuration, thereby more economically implementing the transformation of punch press machines without cylinders. In addition, the spring force output is continuous and will not cause damage to the equipment and die due to pressure fluctuations, so the work is more reliable.

[0005] As a preferred, the frame comprises a top ring, a bottom plate and a plurality of fixing rods, the fixing rods are fixed between the top ring and the bottom plate, and the spring plate is embedded in the center hole of the top ring. The frame composed of the top ring, the bottom plate and the fixing rods can support the stable movement of the spring plate.

[0006] As a preferred, a plurality of sliding guide rods are fixed to the bottom of the spring plate, the sliding guide rods are adapted to be connected through the bottom plate, and the spring is sleeved on the sliding guide rods. This structure can realize the sliding connection of the spring plate and the frame, and the position of the spring between the spring plate and the frame is maintained.

[0007] As a preferred, a spring force adjusting mechanism is further arranged between the spring plate and the bottom of the frame, the spring force adjusting mechanism comprises an adjusting screw, a connecting rod, a connecting rod support ring, a rack, a fixed gear, a threaded sleeve, a lifting gear and a pad, the adjusting screw is rotationally connected to the center of the bottom plate, the connecting rod support ring is threadedly connected to the adjusting screw, the two ends of the connecting rod are respectively hinged to the connecting rod support ring and the rack, the rack is slidingly connected to the bottom plate, the fixed gear is rotationally connected to the bottom plate and engaged with the rack, the threaded sleeve is fixed to the bottom plate and sleeved on the outside of the sliding guide rod, the lifting gear is threadedly connected with the threaded sleeve, the lifting gear is engaged with the fixed gear, the pad is connected to the end face of the lifting gear, and the bottom end of the spring abuts against the pad. Rotating the adjusting screw can change the position of the connecting rod support ring on the adjusting screw, the connecting rod changes the inclination angle to adapt to the position change of the connecting rod support ring, the angle change of the connecting rod drives the rack to slide, and then drives the fixed gear to rotate, the fixed gear drives the lifting gear to rotate, and the relative rotation between the lifting gear and the threaded sleeve is converted into relative axial movement, so the lifting gear can change the position along the threaded sleeve, and the bottom end position of the pad and the spring also changes. When the spring plate supports the punch press die, after the punch press die is closed and the whole body is displaced by a fixed length, the overall compression amount of the spring with the adjusted bottom end position also changes accordingly, so that different spring forces are obtained. Through the spring force adjusting mechanism, the demolding force requirements of different specifications of stamping products can be better adapted.

[0008] As preferred, the rack rail is fixed on the base plate, and the rack is slidably connected to the rack rail one by one. The rack rail can provide support and constraint for the rack, realizing the sliding connection of the rack and the base plate.

[0009] As preferred, the cushion block is rotatably connected to the lifting gear. The cushion block can rotate, so that it can not rotate synchronously with the lifting gear, and when supporting the bottom end of the spring, it can avoid driving the spring to twist, ensuring that the spring maintains a substantially stable form and spring force output.

[0010] As preferred, the fixed rods are uniformly distributed on the base plate, and the sliding guide rods are uniformly distributed on the spring plate. Such a setting has a more stable mechanical structure.

[0011] As preferred, the fixed rods and the sliding guide rods are one-to-one corresponding and spaced apart. This is conducive to the compact layout and balanced stress of the punch press machine cylinder simulation device.

[0012] As preferred, the fixed rods are connected with the top ring and the base plate through screws. The connection of the fixed rods with the top ring and the base plate through screws is simple in structure and convenient to implement.

[0013] The beneficial effects of the present application are:

[0014] Convenient for enterprise production and development coordination. The present application can be installed on a punch press machine without a cylinder to simulate a cylinder, giving the machine auxiliary product demolding function, so that the punch press that is not suitable for producing non-falling type demolding products can be used to produce non-falling type demolding punch products, fully utilizing idle low-end equipment and reducing the occupation of high-performance equipment.

[0015] Simple structure, reduces the cost of transformation. The present application uses a pure mechanical structure to replace the cylinder, which can save the use amount of industrial gas and related electric and gas path facility configuration, thereby more economically implementing the transformation of the punch press machine without a cylinder.

[0016] Good reliability. The present application has continuous spring force output, and will not cause damage to the equipment and die due to pressure fluctuation, so the work is more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present application;

[0018] Figure 2 is a structural schematic diagram of the present application;

[0019] Figure 3 is a working state schematic diagram of the present application;

[0020] Figure 4 is a layout schematic diagram of the spring force adjusting mechanism in the present application;

[0021] Figure 5This is a schematic diagram of the elasticity adjustment mechanism in this invention.

[0022] In the diagram, 1-frame, 101-top ring, 102-base plate, 103-fixed rod, 2-spring plate, 201-sliding guide rod, 3-spring, 4-adjusting screw, 5-connecting rod, 6-connecting rod support ring, 7-rack, 701-rack rail, 8-fixed gear, 9-threaded sleeve, 10-lifting gear, 11-pad block, 12-lower platform, 13-mounting hole, 14-lower push rod, 15-material support plate, 16-product. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1:

[0025] like Figures 1 to 3 As shown, a cylinder simulation device for a stamping machine includes a frame 1, spring plates 2, and four springs 3 pressing against the spring plates 2. The spring plates 2 are slidably connected to the frame 1, and the springs 3 are located between the spring plates 2 and the bottom of the frame 1. The frame 1 is cage-shaped and includes a top ring 101, a bottom plate 102, and four fixing rods 103. The top ring 101 and the bottom plate 102 are coaxial. The two ends of the fixing rods 103 are fixed to the top ring 101 and the bottom plate 102 respectively by screws, and the fixing rods 103 are evenly distributed around the axis of the top ring 101 and the bottom plate 102. Sliding guide rods 201 are evenly distributed on the spring plates 2. The spring plates 2 are embedded in the central hole of the top ring 101. Four sliding guide rods 201 are fixed to the bottom of the spring plates 2 by screws. The bottom plate 102 has four through holes corresponding to the sliding guide rods 201. The sliding guide rods 201 are fitted and connected to the through holes one by one, and the springs 3 are sleeved on the sliding guide rods 201. The fixed rod 103 and the sliding guide rod 201 are in one-to-one correspondence and are interspersed and distributed at intervals.

[0026] The punch press cylinder simulation device can be added to a single station punch press, and the single station punch press only suitable for punching and cutting small piece processing is transformed into a punch forming product suitable for processing a cavity. The bottom surface of the top ring 101 of the punch press cylinder simulation device is attached to the top of the lower table 12, and the bottom plate 102 and the fixed rod 103 are placed in the existing or specially processed mounting hole 13 on the lower table 12 below the punch head. The lower die holder of the punch die is placed on the top ring 101 and fixed with the lower table 12 of the single station punch press through the fixing part. After the punch starts, the upper die of the punch die is lowered to the lower dead point as a whole with the punch mechanism of the punch press, and the product is punched. The lower ejector rod 14 with a certain lifting range on the punch die is pushed by the spring plate 2 under the pressure of the upper die, so that the spring plate 2 is lowered, and the four springs 3 are compressed. After the punching is completed, the upper die of the punch die returns to the upper dead point, and the lower ejector rod 14 is exposed at the bottom of the lower die of the punch die. At the same time, due to the release of the energy storage of the compressed spring 3, the spring plate 2 is pushed up and pushes the lower ejector rod 14 upward until the step structure on the lower ejector rod 14 is stopped on the material supporting plate 15 of the punch die, and the material supporting plate 15 pushes the product 16, so as to eject the product 16 and smoothly take out.

[0027] Example 2:

[0028] As Figure 4 , Figure 5As shown, the spring plate 2 and the bottom of the bottom plate 102 are also provided with a spring force adjusting mechanism, which includes an adjusting screw 4, four connecting rods 5, a connecting rod support ring 6, four racks 7, four indexing gears 8, four threaded sleeves 9, four lifting gears 10 and four pads 11. The adjusting screw 4 is rotatably connected in the center hole of the bottom plate 102 through a bearing and is axially positioned by a shaft with a retaining ring. The bottom end of the adjusting screw 4 is provided with a T-shaped handle, which is located below the bottom plate 102. The adjusting screw 4 is also provided with a locking nut which can abut against the bottom surface of the bottom plate 102. The connecting rod support ring 6 is threadedly connected on the adjusting screw 4. The four connecting rods 5 are evenly distributed on the connecting rod support ring 6 in a radial manner. The two ends of the connecting rod 5 are respectively hinged to the connecting rod support ring 6 and the corresponding rack 7. Four rack rails 701 are fixed on the bottom plate 102. The rack rails 701 are provided with dovetail grooves. The racks 7 are fitted in the dovetail grooves, so that the racks 7 are one-to-one connected to the rack rails 701 and are slidingly connected to the bottom plate 102 in a side-standing state. The four indexing gears 8 are rotatably connected to the bottom plate 102 and are one-to-one engaged with the four racks 7. The four threaded sleeves 9 are fixed on the bottom plate 102 by screws and are one-to-one sleeved on the outer surfaces of the sliding guide rods 201. The threaded sleeves 9 are provided with external threads. The center holes of the lifting gears 10 are provided with internal threads. The centers of the lifting gears 10 are threadedly connected to the corresponding threaded sleeves 9. The lifting gears 10 are one-to-one engaged with the indexing gears 8. The thickness of the indexing gears 8 is greater than that of the lifting gears 10. The bottom end of the spring 3 abuts against the corresponding pad 11. The upper end surface of the lifting gear 10 is embedded with a ring-shaped arrangement of balls. The pad 11 is one-to-one rotatably connected to the upper end surface of the lifting gear 10 and is in contact with the balls. The rest is the same as in Embodiment 1.

[0029] The structure of the product 16 is different, the engagement point and the engagement area of the stamping die are also different, and the required demolding force will also change. Therefore, it is often necessary to adjust the spring force of the spring 3, so as to change the demolding force of the spring plate 2. When adjusting the spring force of the spring 3, the adjusting screw 4 is rotated. Since the racks 7 are constrained on the bottom plate 102 by the rack rails 701, the connecting rod support ring 6 will not rotate with the adjusting screw 4. The relative rotation between the connecting rod support ring 6 and the adjusting screw 4 is converted into the position change of the connecting rod support ring 6 in the axial direction of the adjusting screw 4. The connecting rod 5 changes the inclination angle by itself to adapt to the position change of the connecting rod support ring 6. The angle change of the connecting rod 5 drives the rack 7 to slide on the rack rail 701. The rack 7 drives the engaged indexing gear 8 to rotate. The indexing gear 8 drives the corresponding lifting gear 10 to rotate. The relative rotation between the lifting gear 10 and the threaded sleeve 9 is converted into relative axial movement. Therefore, the lifting gear 10 can change position along the threaded sleeve 9. The position of the pad 11, i.e. the bottom end of the spring 3, also changes. When the spring plate 2 rises and abuts against the fixed lower top rod 14, the overall compression amount of the spring 3 with the adjusted bottom end position also changes accordingly, so as to obtain different spring forces. Through the spring force adjusting mechanism, the demolding force required for different stamping products can be better adapted.

Claims

1. A press machine cylinder simulation device, characterized by The spring comprises a frame, a spring plate and a spring, the spring plate is slidingly connected to the frame, the spring is arranged between the spring plate and the bottom of the frame, a spring force adjusting mechanism is further arranged between the spring plate and the bottom of the frame, the frame comprises a bottom plate, a plurality of sliding guide rods are fixed to the bottom of the spring plate, the spring force adjusting mechanism comprises a lifting gear, a pad block connected to the end surface of the lifting gear and abutting against the bottom end of the spring, a rack slidingly connected to the bottom plate, a fixed gear rotatingly connected to the bottom plate and meshing with the rack, an adjusting screw and a connecting rod support ring connected through threads, a connecting rod hingedly connected to the rack and the connecting rod support ring at two ends, a threaded sleeve fixed to the bottom plate and sleeved outside the sliding guide rods, the lifting gear is connected to the threaded sleeve through threads and meshes with the fixed gear, when the adjusting screw is rotated, the total compression amount of the spring also changes accordingly.

2. The press machine cylinder simulation apparatus according to claim 1, characterized by The frame comprises a top ring and a plurality of fixed rods, the fixed rods are fixed between the top ring and the bottom plate, and the spring plate is embedded in the center hole of the top ring.

3. The press machine cylinder simulation apparatus according to claim 1, characterized by The sliding guide rods are adapted to be connected to the bottom plate, and the spring is sleeved on the sliding guide rods.

4. The press machine cylinder simulation apparatus according to claim 1, characterized by The adjusting screw is rotatingly connected to the center of the bottom plate.

5. The press machine cylinder simulation apparatus according to claim 1, characterized by The rack is fixed to the bottom plate, and the rack is slidingly connected to the rack rail in one-to-one correspondence.

6. The press machine cylinder simulation apparatus according to claim 1, characterized by The pad block is rotatingly connected to the lifting gear.

7. The press machine cylinder simulation apparatus according to claim 1, characterized by The fixed rods are uniformly distributed on the bottom plate, and the sliding guide rods are uniformly distributed on the spring plate.

8. The press machine cylinder simulation apparatus according to claim 1, characterized by The fixed rods and the sliding guide rods are one-to-one corresponding and spaced apart.

9. The press tool cylinder simulation device according to any one of claims 1 to 8, characterized in that The fixed rods are connected to the top ring and the bottom plate through screws.

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