Pressing plate adjusting device for press machine

Abstract

The utility model discloses a pressing plate adjusting device for a press machine, the press machine comprises a workbench, a pressing plate arranged above the workbench and guide pillars distributed at four corners of the pressing plate, the upper ends of the guide pillars are threaded rods, the threaded rods penetrate through the pressing plate and extend to the upper part of the pressing plate, and the lower ends of the guide pillars are slidably arranged on the workbench; the pressing plate adjusting device comprises first gears rotationally installed at the four corners of the top of the pressing plate and second gears rotationally installed at the top of the pressing plate and meshed with the first gears, and shaft holes of the first gears are in threaded connection with the corresponding threaded rods. The first gears distributed at the four corners of the pressing plate are synchronously driven by the second gears to rotate, so that synchronous lifting of the four corners of the pressing plate is achieved, it is guaranteed that the pressing plate is always in a horizontal state, operation is easy, the die filling height of the press machine is effectively adjusted, the application range of the press machine is widened, and production efficiency is improved. Therefore, different mold opening and closing strokes of different molds are met.

Description

Technical Field

[0001] The utility model relates to the technical field of presses, in particular to a pressure plate adjusting device for a press. Background Art

[0002] The press machine includes a workbench for mounting the lower die and a pressing plate arranged above the workbench for mounting the upper die. The four corners of the pressing plate are fixedly connected with guide pillars, which are slidably connected to the workbench to guide the lifting and lowering of the pressing plate. The press machine drives the guide pillars to lift and lower through the driving mechanism, thereby lifting and lowering the pressing plate to realize the opening and closing of the upper and lower dies.

[0003] Different molds have different opening and closing strokes. In the prior art, in order to expand the use range of the press, the press clamps the pressing plate on the guide column through two nuts. Figure 1 As shown, the upper end of the guide column 3 is a threaded rod 31, and the threaded rod 31 is provided with upper and lower nuts that match it, and the pressing plate 2 is placed between the upper and lower nuts, thereby fixing and limiting the pressing plate 2. When the die loading height of the press needs to be adjusted to match different molds, the relative position of the pressing plate 2 on the guide column 3 is adjusted by adjusting the positions of the two nuts on the threaded rod 31.

[0004] Specifically, the upper nut is removed from the threaded rod 31, and then the pressure plate 2 is moved upward to space the pressure plate 2 from the lower nut, so as to adjust the position of the lower nut; after the position of the lower nut is adjusted, the pressure plate 2 is placed on top of the lower nut, and then the upper nut is installed on the screw rod 11 to achieve fixed positioning of the pressure plate 2. The above operation efficiency is too low, and it is difficult to move the pressure plate 2. Among them, when the staff adjusts the position of the nut, it is difficult to ensure that the lower nuts on the four guide pillars 3 are placed at the same horizontal height, that is, it is impossible to ensure that the pressure plate 2 is set horizontally after adjustment. Utility Model Content

[0005] The utility model aims to provide a pressing plate adjusting device for a press machine, which reduces the center of gravity of the press machine and the overall height of the press machine, improves the stability of the press machine and saves space.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A pressing plate adjusting device for a press machine, the press machine comprising a workbench, a pressing plate arranged above the workbench, and guide pillars distributed at the four corners of the pressing plate, the upper ends of the guide pillars being threaded rods, the threaded rods passing through the pressing plate and extending to the top of the pressing plate, the lower ends of the guide pillars being slidably mounted on the workbench;

[0008] The pressure plate adjustment device includes a first gear rotatably mounted on the four corners of the top of the pressure plate and a second gear rotatably mounted on the top of the pressure plate and meshing with the first gear. The shaft hole of the first gear is threadedly connected to the corresponding threaded rod.

[0009] The second gear synchronously drives the first gear located at the four corners of the pressing plate to rotate, so as to realize the synchronous lifting and lowering of the four corners of the pressing plate to ensure that the pressing plate is always in a horizontal state. The operation is simple and the die loading height of the press can be effectively adjusted, thereby expanding the application range of the press to meet the different opening and closing strokes of different molds.

[0010] As a further solution of the utility model, the pressure plate adjustment device further comprises a driving device for driving the second gear to rotate. With the above solution, compared with manually rotating the second gear, using the driving device to drive the second gear to rotate is more labor-saving.

[0011] As a further solution of the utility model, the driving device is a motor, and the output end of the motor is fixedly connected to a transmission gear meshing with the second gear. With the above solution, the transmission between the driving device and the second gear is realized through the transmission gear.

[0012] As a further solution of the utility model, the first gear is a small gear; the second gear is a large gear, which is placed at the center of the top of the pressing plate. The above solution is adopted to prevent the edge of the first gear from protruding from the surrounding edges of the pressing plate.

[0013] As a further solution of the utility model, a plurality of positioning shafts evenly distributed along the circumferential direction are provided in the shaft hole of the second gear, and the positioning shafts are vertically installed on the top of the pressure plate, and the outer side wall thereof is rotatably connected to the inner wall of the shaft hole of the second gear. With the above solution, compared with a rotating shaft adapted to the shaft hole of the second gear, the mass and volume of the plurality of positioning shafts are smaller, thereby effectively reducing the force on the pressure plate, protecting the pressure plate, and saving space.

[0014] As a further solution of the utility model, the positioning shaft is rotatably mounted on the top of the pressure plate. The above solution is adopted to avoid excessive wear of the inner wall of the shaft hole of the second gear.

[0015] As a further solution of the utility model, the outer wall of the positioning shaft is provided with a limiting convex edge for contacting with the top of the second gear. The above solution is adopted to achieve the limiting of the top of the second gear.

[0016] As a further solution of the utility model, a wear-resistant pad for contacting the bottom of the second gear is fixed on the top of the pressure plate. The above solution is adopted to avoid excessive wear of the bottom of the second gear.

[0017] As a further solution of the present invention, the first gear is rotatably mounted on the pressure plate through a gear mounting frame; the gear mounting frame includes a top plate horizontally arranged above the pressure plate, the top plate and the pressure plate are connected through a plurality of support rods, the first gear is rotatably mounted on the top plate, and a through hole is provided on the top plate for the threaded rod to pass through.

[0018] Beneficial effects of the utility model:

[0019] The second gear synchronously drives the first gears at the four corners of the pressing plate to rotate, so as to achieve synchronous lifting and lowering of the four corners of the pressing plate, so as to ensure that the pressing plate is always in a horizontal state, effectively adjust the die height of the press, and expand the application range of the press to meet the different opening and closing strokes of different molds;

[0020] The position of the pressure plate can be adjusted by simply rotating the second gear, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the connection between the pressure plate and the guide column in the prior art;

[0023] Figure 2 It is a schematic diagram of the utility model applied to a mechanical press;

[0024] Figure 3 It is a cross-sectional view of the utility model applied to a mechanical press;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 5 It is a partial structural schematic diagram of the utility model;

[0027] Figure 6 It is a schematic diagram of the first gear in the utility model being installed on the gear mounting frame;

[0028] Figure 7 It is a schematic diagram of the drive device of the utility model being installed on the support frame.

[0029] The accompanying drawings are denoted as follows:

[0030] 1. Platen adjustment device; 11. First gear; 12. Second gear; 13. Support frame; 14. Gear mounting frame; 141. Top plate; 142. Support rod; 15. Positioning shaft; 151. Limiting convex edge; 16. Wear-resistant pad; 17. Driving device; 18. Transmission gear; 2. Platen; 3. Guide column; 31. Threaded rod; 32. Round rod; 4. Hollow base; 5. Bottom plate; 6. Driving motor; 7. Crank-connecting rod mechanism; 8. Workbench. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] A pressing plate adjusting device for a press machine is used for adjusting the relative position of a pressing plate 2 on a guide column 3.

[0033] In this embodiment, the pressure plate adjustment device 1 is applied to a mechanical press. Figure 1 to Figure 4 As shown, the mechanical press comprises a hollow base 4, a bottom plate 5 arranged inside the hollow base 4, a workbench 8 fixed on the top of the hollow base 4, a pressing plate 2 arranged above the workbench 8, and four guide pillars 3 distributed at the four corners of the pressing plate 2. The pressing plate adjustment device 1 is installed on the top of the pressing plate 2. The upper end of the guide pillar 3 is a threaded rod 31, which passes through the pressing plate 2 and is threadedly connected to the pressing plate adjustment device 1. The lower end of the guide pillar 3 is a round rod 32, which passes through the workbench 8 and slides with the workbench 8, and extends into the interior of the hollow base 4 and is fixedly connected to the four corners of the bottom plate 5. A driving motor 6 is installed inside the hollow base 4, and the output shaft of the driving motor 6 is connected to the upper end of the crank connecting rod mechanism 7, and the lower end of the crank connecting rod mechanism 7 is hinged to drive the bottom plate 5. The driving motor 6 indirectly drives the bottom plate 5 to rise and fall through the crank connecting rod mechanism 7, thereby causing the pressing plate 2 to rise and fall.

[0034] like Figure 4-5 As shown, the pressure plate adjustment device 1 includes a first gear 11 rotatably mounted on the four corners of the top of the pressure plate 2 and a second gear 12 rotatably mounted on the top of the pressure plate 2 and meshing with the first gear 11. The shaft hole of the first gear 11 is threadedly connected with the corresponding threaded rod 31. When the relative position of the pressure plate 2 on the guide column 3 needs to be adjusted, the second gear 12 is rotated, and the second gear 12 synchronously drives the first gears 11 distributed at the four corners of the pressure plate 2 to rotate on the corresponding threaded rod 31, thereby synchronously driving the four corners of the pressure plate 2 to rise and fall, that is, realizing the lifting and falling of the entire pressure plate 2.

[0035] In this embodiment, the first gear 11 is a small gear to prevent the edge of the first gear 11 from protruding from the edges of the pressing plate 2. Figure 6 As shown, the first gear 11 is rotatably mounted on the pressing plate 2 through a gear mounting frame 14. Specifically, the gear mounting frame 14 includes a top plate 141 horizontally arranged above the pressing plate 2. The top plate 141 is connected to the pressing plate 2 through a plurality of support rods 142. The first gear 11 is rotatably mounted on the bottom of the top plate 141, and a through hole is provided on the top plate 141 for the threaded rod 31 to pass through.

[0036] Furthermore, in order to ensure the stability of the structure of the gear mounting frame 14 , there are at least three support rods 142 , which are evenly arranged along the same circumference and are arranged around the outside of the first gear 11 .

[0037] In this embodiment, the second gear 12 is a large gear, which is placed at the center of the top of the pressure plate 2, and the first gears 11 are distributed around the periphery of the second gear 12. Figure 4 As shown, a plurality of positioning shafts 15 evenly distributed along the circumferential direction are provided in the shaft hole of the second gear 12. The positioning shaft 15 is vertically mounted on the top of the pressure plate 2, and its outer side wall is rotatably connected to the inner wall of the shaft hole of the second gear 12. A limiting convex edge 151 for abutting against the top of the second gear 12 is provided on the outer side wall of the positioning shaft 15, so as to limit the top of the second gear 12. In order to avoid excessive wear of the bottom of the second gear 12, a wear-resistant pad 16 for abutting against the bottom of the second gear 12 is fixed on the top of the pressure plate 2. Furthermore, in order to avoid excessive wear of the inner wall of the shaft hole of the second gear 12, the positioning shaft 15 is rotatably mounted on the top of the pressure plate 2.

[0038] Furthermore, there are at least two positioning shafts 15 to ensure that the second gear 12 can rotate normally. In this embodiment, there are four positioning shafts 15.

[0039] Further, such as Figures 4 to 7 As shown, the pressure plate adjustment device 1 also includes a driving device 17 for driving the second gear 12 to rotate. The driving device 17 is a motor, which is installed on the top of the pressure plate 2 through the support frame 13. The output end of the motor is fixedly connected to a transmission gear 18 meshing with the second gear 12.

[0040] The working principle of the utility model is as follows:

[0041] When the die height of the press needs to be adjusted, the output end of the driving device 17 drives the transmission gear 18 to rotate, and the transmission gear 18 drives the second gear 12 to rotate, and the second gear 12 synchronously drives the first gears 11 distributed at the four corners of the pressing plate 2 to rotate on the corresponding threaded rod 31, thereby synchronously driving the four corners of the pressing plate 2 to rise and fall, that is, realizing the lifting and falling of the entire pressing plate 2. When the pressing plate 2 moves to a suitable position, the output end of the driving device 17 stops rotating, that is, the pressing plate 2 is effectively fixed on the threaded rod 31.

[0042] The utility model realizes synchronous lifting and lowering of the four corners of the pressing plate by synchronously driving the first gears distributed at the four corners of the pressing plate through the second gear to ensure that the pressing plate is always in a horizontal state. The operation is simple, the die loading height of the press can be effectively adjusted, and the application range of the press is expanded to meet the different opening and closing die strokes of different molds.

[0043] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of patent protection of the utility model.

Claims

1. A press plate adjusting device for a press machine, the press machine comprising a workbench, a press plate arranged above the workbench, and guide posts distributed at the four corners of the press plate, the upper ends of the guide posts are threaded rods, the threaded rods pass through the press plate and extend to the top of the press plate, the lower ends of the guide posts are slidably mounted on the workbench, and are characterized in that: The pressure plate adjustment device includes a first gear rotatably mounted on the four corners of the top of the pressure plate and a second gear rotatably mounted on the top of the pressure plate and meshing with the first gear. The shaft hole of the first gear is threadedly connected to the corresponding threaded rod.

2. The pressure plate adjustment device according to claim 1, characterized in that: The pressure plate adjusting device also includes a driving device for driving the second gear to rotate.

3. The pressure plate adjustment device according to claim 2, characterized in that: The driving device is a motor, and the output end of the motor is fixedly connected to a transmission gear meshing with the second gear.

4. The pressure plate adjustment device according to claim 1, characterized in that: The first gear is a small gear; the second gear is a large gear, which is placed at the center of the top of the pressure plate.

5. The pressure plate adjustment device according to claim 4, characterized in that: A plurality of positioning shafts evenly distributed along the circumferential direction are arranged in the shaft hole of the second gear. The positioning shafts are vertically installed on the top of the pressure plate, and the outer side walls thereof are rotatably connected to the inner wall of the shaft hole of the second gear.

6. The pressure plate adjustment device according to claim 5, characterized in that: The positioning shaft is rotatably mounted on the top of the pressing plate.

7. The pressure plate adjustment device according to claim 5, characterized in that: A limiting convex edge for abutting against the top of the second gear is provided on the outer side wall of the positioning shaft.

8. The pressure plate adjustment device according to claim 7, characterized in that: A wear-resistant pad for abutting against the bottom of the second gear is fixed on the top of the pressure plate.

9. The pressure plate adjustment device according to claim 1, characterized in that: The first gear is rotatably mounted on the pressure plate via a gear mounting frame; the gear mounting frame includes a top plate horizontally arranged above the pressure plate, the top plate is connected to the pressure plate via a plurality of support rods, the first gear is rotatably mounted on the top plate, and a through hole is provided on the top plate for the threaded rod to pass through.

Images