Blank machining centering device of press machine

Abstract

The utility model relates to a blank processing centering device of a press machine, which comprises a flange base fixed on a working table of the press machine, an annular disc is rotatably connected in the flange base, an arc-shaped through groove is arranged on the outer peripheral surface of the flange base, a fixed vertical rod is arranged in the through groove, and the annular disc is arranged on the flange base. A protruding rod is integrally arranged on the peripheral face of the annular disc, a vertical shaft is integrally arranged at the free end of the protruding rod, an extension spring is arranged between the vertical rod and the vertical shaft, a rotating rod is further integrally arranged on the peripheral face of the annular disc, a clamping jaw is hinged to the upper end face of the flange base, and the upper surface of the annular disc is also hinged to the clamping jaw. The relative positions of the flange base and the annular disc are changed through pulling of the rotating rod, so that the clamping jaws are driven to conduct automatic centering, the automatic centering is consistent with the pressure center of a press sliding block, the problems that the service life of the sliding block and a mold is shortened, and blank forming is uneven are solved, and the device is suitable for industrial production and has very high practicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary tooling for presses, and particularly relates to a blank centering device for presses. Background Technology

[0002] A patent titled "Blank Feeding Device for an Electric Screw Press" (application number CN202221797841.6, application date 2022-07-13) is disclosed in the existing Chinese patent database. This device solves the problem of low feeding efficiency caused by manually placing billets into the forging cavity. It includes a frame, an adjusting rod mounted on the top inner side of the frame, a slider fixedly mounted at the bottom of the adjusting rod, a pressure block fixedly mounted at the bottom of the slider, a base fixedly mounted on the bottom inner side of the frame, and a forging cavity at the top of the base. A feeding mechanism and a fixing mechanism are mounted on the right side of the frame, connected together. This invention, through the cooperation of a cylinder, a push block, a push rod, and a baffle, allows the baffle to move downwards and separate from the bottom of the cylinder, increasing the distance between the cylinder and the baffle. This allows the billet inside the cylinder to fall from between the cylinder and the baffle into the forging cavity, thus replacing manual feeding and facilitating feeding.

[0003] In the prior art, when the slide of a press is forging a blank, the pressure center needs to be kept as consistent as possible with the axis of the blank. Otherwise, the life of the slide and the mold will be shortened and the blank will be unevenly formed. Therefore, this paper aims to propose a blank processing centering device for a press, which can adjust the position of the workpiece or blank before forging so that the axis of the workpiece is consistent with the pressure center of the press. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to center the position of the workpiece before forging so that the axis of the workpiece is consistent with the pressure center of the press. In order to improve its shortcomings, this utility model provides a blank processing centering device for a press.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A blank processing centering device for a press includes a flange base fixed to the press worktable. An annular disc is rotatably connected inside the flange base. An arc-shaped through groove is formed on the outer circumferential surface of the flange base. A fixed vertical rod is arranged in the through groove. A protruding rod is integrally formed on the outer circumferential surface of the annular disc. A vertical shaft is integrally formed on the free end of the protruding rod. A tension spring is arranged between the vertical rod and the vertical shaft. A rotating rod is also integrally formed on the outer circumferential surface of the annular disc. The free end of the rotating rod protrudes out of the through groove. A chuck is hinged to the upper end face of the flange base. The upper surface of the annular disc is also hinged to the chuck.

[0007] Compared with the prior art, the beneficial effects of this utility model are: due to the cooperative arrangement of the flange base, the annular disc and the chuck, the relative position of the flange base and the annular disc changes by the movement of the rotating rod, thereby driving the chuck to automatically center itself so that it is aligned with the pressure center of the press slide, thus avoiding the problems of shortened life of the slide and mold and uneven blank forming. This device is suitable for industrial production and has strong practicality.

[0008] As a preferred embodiment, the claw is triangular in shape, with one apex hinged to the upper surface of the flange base and the other adjacent apex hinged to the upper surface of the annular disk. A centering component is rotatably connected above the free end of the claw.

[0009] As a preferred embodiment, the centering component includes a column rotatably connected to the free end of the chuck, and the middle part of the column is integrally provided with a gyroscope-shaped protrusion, and the edges of the protrusion are all rounded.

[0010] As a preferred embodiment, a vertical partition is provided inside the through groove, which divides the through groove into independent parts. The rotating rod and the vertical rod are respectively located in the parts with different positions, and the vertical rod and the protruding rod are located on the same side of the partition.

[0011] As a preferred embodiment, the flange base has several mounting holes on its disc portion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0014] Figure 3 This is a schematic diagram of the structure of the free end of the chuck in this utility model.

[0015] In the diagram: 1 Flange base, 2 Annular disc, 3 Through groove, 4 Vertical rod, 5 Protruding rod, 6 Vertical shaft, 7 Tension spring, 8 Rotating rod, 9 Claw, 10 Centering component, 1001 Column, 1002 Outer protrusion, 11 Partition, 12 Mounting hole. Detailed Implementation

[0016] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1-3 As shown, a blank processing centering device for a press includes a flange base 1 fixed to the press worktable. An annular disk 2 is rotatably connected inside the flange base 1. The rotatable connection between the annular disk 2 and the flange base 1 is achieved by setting a stepped surface on the top of the flange base 1. The annular disk 2 is flange-shaped, with the protruding edge of the disk engaging with the stepped surface. An arc-shaped through groove 3 is formed on the outer circumference of the flange base 1, and a fixed vertical rod 4 is installed inside the through groove 3. A protruding rod 5 is integrally formed on the outer circumference of the annular disk 2, and a vertical shaft 6 is integrally formed on the free end of the protruding rod 5. A tension spring 7 is installed between the vertical rod 4 and the vertical shaft 6. A rotating rod 8 is also integrally formed on the outer circumference of the annular disk 2, with the free end of the rotating rod 8 protruding out of the through groove 3. A pawl 9 is hinged to the upper end face of the flange base 1, and the upper surface of the annular disk 2 is also hinged to the pawl 9. The chuck 9 is triangular in shape. One apex of the chuck 9 is hinged to the upper surface of the flange base 1, and the other adjacent apex is hinged to the upper surface of the annular disk 2. A centering component 10 is rotatably connected above the free end of the chuck 9. The centering component 10 includes a column 1001 rotatably connected to the free end of the chuck 9. A gyroscope-shaped protrusion 1002 is integrally provided in the middle of the column 1001, and the edges of the protrusion 1002 are all rounded. A vertical partition 11 is provided in the through groove 3, dividing the through groove 3 into independent parts. The rotating rod 8 and the vertical rod 4 are respectively located in the parts, and the vertical rod 4 and the protrusion 5 are located on the same side of the partition 11. Several mounting holes 12 are opened in the disk portion of the flange base 1.

[0018] When the press is working, the operator turns the rotating rod 8 counterclockwise, causing the annular disk 2 to rotate counterclockwise synchronously with the rotating rod 8. At this time, the jaws 9 rotate clockwise with the hinge point at the upper end of the flange base 1 as the rotation point. The hinge point between the jaws 9 and the upper end of the annular disk 2 changes position as the annular disk 2 rotates. At this time, the three jaws 9 are in an open state, and the workpiece is placed in the worktable inside the annular disk 2. The rotating rod 8 is released, and due to the reset action of the tension spring 7, the annular disk 2 is driven to rotate clockwise, thereby causing each jaw 9 to rotate inward to the annular disk 2. This allows the outer protrusion 1002 of the free end of the jaw 9 to fit against the outer surface of the workpiece, thereby achieving the centering adjustment of the workpiece on the worktable, making it consistent with the pressure center of the press slide, avoiding problems such as shortened life of the slide and mold and uneven blank forming.

[0019] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A blank centering device for a press, characterized in that: The device includes a flange base (1) fixed to the worktable of a press. An annular disk (2) is rotatably connected inside the flange base (1). An arc-shaped through groove (3) is provided on the outer circumferential surface of the flange base (1). A fixed vertical rod (4) is provided in the through groove (3). A protruding rod (5) is integrally provided on the outer circumferential surface of the annular disk (2). A vertical shaft (6) is integrally provided on the free end of the protruding rod (5). A tension spring (7) is provided between the vertical rod (4) and the vertical shaft (6). A rotating rod (8) is also integrally provided on the outer circumferential surface of the annular disk (2). The free end of the rotating rod (8) protrudes out of the through groove (3). A pawl (9) is hinged to the upper end face of the flange base (1). The upper surface of the annular disk (2) is also hinged to the pawl (9).

2. The blank centering device for a press according to claim 1, characterized in that: The claw (9) is triangular in shape. One apex of the claw (9) is hinged to the upper end face of the flange base (1), and the other adjacent apex is hinged to the upper end face of the annular disk (2). A centering component (10) is rotatably connected above the free end of the claw (9).

3. The blank centering device for a press according to claim 2, characterized in that: The centering component (10) includes a column (1001) rotatably connected to the free end of the pawl (9). The column (1001) has an integrally formed gyroscope-shaped protrusion (1002) in the middle, and the edges of the protrusion (1002) are all rounded.

4. The blank centering device for a press according to claim 3, characterized in that: A vertical partition (11) is provided inside the through groove (3). The partition (11) divides the through groove (3) into independent parts. The rotating rod (8) and the vertical rod (4) are respectively located in different parts. The vertical rod (4) and the protruding rod (5) are located on the same side of the partition (11).

5. A blank centering device for a press according to any one of claims 1-4, characterized in that: The flange base (1) has several mounting holes (12) on its disc portion.

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