Mechanical compensation pneumatic clamping workbench special for bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a mechanical compensation pneumatic clamping workbench special for a bending machine, which comprises a mechanical compensation workbench body, and a mechanical compensation workbench surface is fixed on the mechanical compensation workbench body through screws. A lower die fixing clamping block is fixed to the table top of the mechanical compensation workbench through a lower die fixing clamping block screw. According to the utility model, the pneumatic clamping function is designed and developed for the mechanical compensation workbench, so that the mechanical compensation and pneumatic clamping are integrated, the form of mounting a lower die is simplified, and the die mounting and replacing time is saved; meanwhile, the pneumatic clamping workbench in the utility model can be used for clamping the lower die with the width of 60mm and 13mm at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a special mechanical compensation pneumatic clamping workbench for bending machines. Background Art

[0002] During the bending process of a press brake, the middle part of the upper beam of the press brake will produce an upward arched elastic deformation, and the middle part of the workbench will produce a downward elastic deformation. Therefore, a workbench that can compensate for this has appeared on the market. By dislocating the upper and lower wedge blocks inside the workbench, the workbench can produce an upward compensatory deformation, thereby compensating for the bending error caused by the deformation of the upper beam. However, the mechanical compensation workbench on the market all uses manual screw locking to install the lower die. After placing the lower die on the workbench, each die clamp is screwed. When the bend is long, the required lower die length is also longer, and the number of clamps required for locking is also more. Therefore, more screws need to be tightened, and the time cost required for die installation and die changing is increased, and the actual processing cost also increases. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the traditional installation method of the mechanical compensation workbench is a manual screw locking method, which is time-consuming and labor-intensive and increases the processing cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a mechanical compensation pneumatic clamping workbench specially used for bending machines, comprising a mechanical compensation workbench body, a mechanical compensation workbench table top fixed to the mechanical compensation workbench body by screws, a lower die fixing clamping block fixed to the mechanical compensation workbench table top by a lower die fixing clamping block screw, a lower die movable clamping block fixing screw is fixed to the other side surface of the mechanical compensation workbench table top by locking, a joint bearing locating shaft of a joint bearing is sleeved on the lower die movable clamping block fixing screw, and two first quick-screw joints are installed on the threaded holes at both ends of the mechanical compensation workbench table top.

[0005] A second quick-screw joint is sleeved on the first quick-screw joint.

[0006] The second quick-tightening joints on both sides of the mechanical compensation workbench are connected through a blue reinforced polyvinyl chloride air pipe, and the blue reinforced polyvinyl chloride air pipe is clamped in the square groove at the upper end of the mechanical compensation workbench through a plurality of lower mold movable clamps.

[0007] An air pipe plug is installed on the internal thread of the threaded hole on one side of the mechanical compensation workbench table, and a 90-degree quick-insert pipe connector is installed on the internal thread of the threaded hole on the other side of the mechanical compensation workbench table.

[0008] A cylindrical clamping pin and a circular compression spring are installed in the countersunk hole of the table top of the mechanical compensation workbench through a lower die movable clamping block.

[0009] A rectangular compression spring is installed in the blind hole of the lower die movable clamping block.

[0010] The beneficial effects of the utility model are:

[0011] (1) The utility model of the mechanical compensation pneumatic clamping workbench for bending machines integrates the mechanical compensation workbench and the pneumatic clamping workbench into one, thereby simplifying the structure;

[0012] (2) The die loading and changing operations are simpler, saving the preparation time for bending production;

[0013] (3) Compatible with both 60mm and 13mm width lower molds, with greater adaptability;

[0014] (4) The production cost is relatively reduced, which increases the economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the front side of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the rear side of the utility model.

[0018] Figure 3 It is a partial schematic diagram of the present utility model.

[0019] Figure 4 yes Figure 3 Schematic diagram of the internal structure in the GG direction.

[0020] Figure 5 yes Figure 3 Cross-sectional view at position AA.

[0021] Figure 6 yes Figure 3 Cross-sectional view at the CC position.

[0022] Figure 7 yes Figure 3 Cross-sectional view at the EE position. DETAILED DESCRIPTION

[0023] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 In the shown special mechanical compensation pneumatic clamping workbench for the bending machine, the mechanical compensation workbench table 4 is fixed to the mechanical compensation workbench body 1 by screws, and the lower die fixed clamp 3 is fixed to the mechanical compensation workbench table 4 by the lower die fixed clamp fixing screw 5. The joint bearing 6 and the joint bearing positioning sleeve 8 are both sleeved on the lower die movable clamp fixing screw 5, and the lower die movable clamp fixing screw 7 is locked. On the other side of the mechanical compensation workbench table 4, the lower die movable clamp 2 is installed on two joint bearings 6 and can swing flexibly. The two first quick-screw joints 14 are respectively locked on the threaded holes at both ends of the mechanical compensation workbench table 4. At the same time, a second quick-screw joint 15 is respectively sleeved on the two first quick-screw joints 14 to form a right-angle bend in the air path. A blue reinforced PVC air tube 9 connects the two second quick-connect fittings 15. The blue reinforced PVC air tube 9 is clamped and flattened in the internal square groove by the 29 lower mold movable clamps 2. An air tube plug 13 is screwed into a threaded hole on one side of the mechanical compensation workbench surface 4, forming a closed air path for the air tube. A 90-degree quick-connect fitting 16 is screwed into a threaded hole on the other side of the mechanical compensation workbench surface 4, serving as the compressed air input port for the pneumatic clamping table. A circular compression spring 10 is fitted over a cylindrical clamping pin 11. The lower mold movable clamp 2 presses the cylindrical clamping pin 11 and the circular compression spring 10 into the countersunk hole of the mechanical compensation workbench surface 4. A rectangular compression spring 12 is placed in a blind hole in the lower mold movable clamp 2 and directly presses against the side of the mechanical compensation workbench surface 4.

[0026] effect:

[0027] The lower die fixing clamp 3 is locked on one side of the mechanical compensation workbench table 4, and the end surface of the lower die fixing clamp 3 serves as the reference positioning surface for installing the 60mm width lower die.

[0028] A square groove with a width of 13.5 mm is opened in the middle of the mechanical compensation workbench table 4, and a side surface thereof close to the lower mold fixing clamp 3 serves as a reference positioning surface for installing the 13 mm width lower mold.

[0029] The lower die movable clamp 2 is mounted on two spherical bearings 6 and is able to swing flexibly. Each lower die movable clamp 2 has four blind holes, each of which is pressed into a rectangular compression spring 12. The other end of the compression spring presses against the side of the mechanical compensation table 4. Therefore, in the free state, the tension of the rectangular compression spring 12 causes the lower die movable clamp 2 to open outward. At this point, the spacing between the lower die movable clamp 2 and the lower die fixed clamp 3 is greater than 60 mm, easily accommodating a lower die with a width of 60 mm.

[0030] A cylindrical clamping pin 11, sleeved with a circular compression spring 10, is pressed into the side countersunk hole of the mechanical compensation table surface 4. Due to the tension of the circular compression spring 10, the large end of the cylindrical clamping pin 11 is pressed tightly against the inner surface of the lower mold movable clamping block 2. Seven cylindrical clamping pins 11 are distributed on the inner surface of each lower mold movable clamping block 2. When the lower mold movable clamping block 2 is in the open position, the small end of the cylindrical clamping pin 11 does not extend beyond the side surface of the 13.5mm square groove in the center of the mechanical compensation table surface. This allows for easy insertion of a 13mm wide lower mold.

[0031] The 90-degree quick-connect pipe connector 16 is used to connect to the compressed air end of the production site. When it is connected to the compressed air and the valve is opened, the compressed air will be pressed into the blue reinforced polyvinyl chloride air pipe 9 through the air path. When the pressure of the compressed air is greater than the pressure generated by the rectangular compression spring 12, the blue reinforced polyvinyl chloride air pipe 9 will be stretched open and generate a thrust on the lower inner surface of the lower mold movable clamp 2, so that the lower mold movable clamp 2 is in a clamping state, and the 60mm wide lower mold can be easily clamped. When the 13mm wide lower mold is installed at this time, the cylindrical clamping pin 11 will be pushed by the lower mold movable clamp 2, and the small head of the cylindrical clamping pin 11 will extend out of the side of the 13.5mm wide square groove in the middle of the mechanical compensation workbench table 4, and support the 13mm wide lower mold, thereby clamping the 13mm wide lower mold.

[0032] When the compressed air in the air circuit is turned off, the pressure inside the blue reinforced polyvinyl chloride air tube 9 disappears. At this time, the lower mold movable clamp 2 is opened again under the pressure of the rectangular compression spring 12, and the blue reinforced polyvinyl chloride air tube 9 is flattened. At this time, the 60mm wide lower mold or the 13mm wide lower mold can be easily removed.

[0033] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A mechanical compensation pneumatic clamping workbench for a bending machine, comprising a mechanical compensation workbench body (1), characterized in that: The mechanical compensation workbench body (1) is fixed with a mechanical compensation workbench table (4) by screws, the mechanical compensation workbench table (4) is fixed with a lower die fixed clamp (3) by a lower die fixed clamp screw (5), the other side of the mechanical compensation workbench table (4) is fixed with a lower die movable clamp fixing screw (7) by locking, the lower die movable clamp fixing screw (7) is sleeved with a joint bearing positioning shaft (8) of a joint bearing (6), and two first quick-screw joints (14) are installed on the threaded holes at both ends of the mechanical compensation workbench table (4).

2. The mechanical compensation pneumatic clamping workbench for bending machines according to claim 1 is characterized by: A second quick-screw joint (15) is sleeved on the first quick-screw joint (14).

3. The mechanical compensation pneumatic clamping workbench for bending machines according to claim 1 is characterized by: The second quick-tightening joints (15) on both sides of the mechanical compensation workbench table (4) are connected via a blue reinforced polyvinyl chloride air pipe (9), and the blue reinforced polyvinyl chloride air pipe (9) is clamped in a square groove at the upper end of the mechanical compensation workbench table (4) via a plurality of lower mold movable clamping blocks (2).

4. The mechanical compensation pneumatic clamping workbench for bending machines according to claim 1 is characterized by: A tracheal plug (13) is installed on the threaded hole on one side of the mechanical compensation workbench table (4), and a 90-degree quick-insert pipe connector (16) is installed on the threaded hole on the other side of the mechanical compensation workbench table (4).

5. The mechanical compensation pneumatic clamping workbench for bending machines according to claim 1 is characterized by: A cylindrical clamping pin (11) and a circular compression spring (10) are installed in the countersunk hole of the mechanical compensation workbench table (4) through a lower die movable clamping block (2).

6. The mechanical compensation pneumatic clamping workbench for bending machines according to claim 1 is characterized by: A rectangular compression spring (12) is installed in the blind hole of the lower die movable clamping block (2).

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