Manually adjustable roller type pre-pressing device and clamp

Abstract

The invention relates to the technical field of shell machining clamps, in particular to a manual adjustable roller type pre-pressing device and a clamp, the pre-pressing device comprises a pre-pressing main body, a sliding hole is formed in the pre-pressing main body, a cylinder is arranged in the sliding hole in a sliding mode, one end of the cylinder is connected with the pre-pressing main body through an elastic piece, and the other end of the cylinder is connected with the pre-pressing main body through the elastic piece; and the other end of the column body extends out of the sliding hole and is movably provided with a roller which is in rolling contact with the workpiece and is used for pressing the workpiece. The pre-pressing device is in rolling contact and linear contact with the workpiece, so that scratches generated on the surface of the workpiece when the workpiece is pre-pressed are avoided, and the influence on workpiece positioning is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of shell machining fixtures, and specifically relates to a manually adjustable roller type pre-pressing device and fixture. Background Art

[0002] A shell machining fixture refers to a shell machining positioning and clamping device. Pre-pressing means that for a vertical plate fixture, a device for pre-pressing the workpiece is added to prevent the workpiece from falling when loading the workpiece. The current pre-pressing devices usually adopt elastic pre-tightening claws, and the elastic pre-tightening claws mainly have the following disadvantages: 1. The elastic pre-tightening claws are in hard contact with the workpiece. When installing the workpiece, relative sliding occurs between the workpiece and the elastic pre-tightening claws, which easily scratches the surface of the workpiece; 2. The elastic pre-tightening claws are in surface contact with the workpiece, which has a certain impact on the positioning of the workpiece. Summary of the Invention

[0003] The purpose of the present invention is to aim at the defects of the prior art and provide a manually adjustable roller type pre-pressing device and fixture. The pre-pressing device and the workpiece adopt a rolling contact and line contact method, avoiding scratches on the workpiece surface and the influence on workpiece positioning when pre-pressing the workpiece.

[0004] To solve the above technical problems, on the one hand, the present invention provides a manually adjustable roller type pre-pressing device, including a pre-pressing main body. A sliding hole is opened in the pre-pressing main body. A column body is slidably arranged in the sliding hole. One end of the column body is connected to the pre-pressing main body through an elastic member. The other end of the column body extends out of the sliding hole and a roller is movably arranged. The roller is used for rolling contact with the workpiece and pressing the workpiece.

[0005] In some embodiments, a limiting hole is opened on the pre-pressing main body. The limiting hole is communicated with the sliding hole. A limiting member is arranged on the limiting hole. A limiting groove is opened on the column body. One end of the limiting member extends into the sliding hole and cooperates with the limiting groove to limit the axial movement range of the column body.

[0006] In some embodiments, an oil filling hole is opened on the pre-pressing main body. The oil filling hole is communicated with the sliding hole. A sealing member is arranged on the oil filling hole.

[0007] In some embodiments, a guide ring is fixedly arranged on the inner wall of the sliding hole near the roller. A sealing ring is arranged between the guide ring and the column body.

[0008] In some embodiments, an adjusting member is arranged on the inner wall of the sliding hole far from the roller in a threaded manner. One end of the adjusting member extends into the sliding hole. One end of the elastic member abuts against the adjusting member.

[0009] In some embodiments, mounting blocks are provided on the pre-compression main body, and a first mounting hole and a second mounting hole are provided on the mounting blocks. Both the first mounting hole and the second mounting hole are waist-shaped holes. The first mounting hole is used for the mounting of the mounting block, and the second mounting hole is used for the mounting of the pre-compression main body.

[0010] On the other hand, the present invention provides a fixture, including a vertical plate, on which a plurality of positioning plates, a plurality of clamping jaws, and a plurality of the pre-compression devices are provided. Elastic positioning pins are provided on the positioning plates. The positioning plates are used to provide a positioning surface for the workpiece, the elastic positioning pins are used for the positioning of the workpiece, the pre-compression devices are used to pre-compress the workpiece on the positioning surface, and the clamping jaws are used to clamp and fix the workpiece on the vertical plate.

[0011] In some embodiments, the pre-compression device is arranged close to the elastic positioning pin.

[0012] In some embodiments, the elastic positioning pin includes a spring round pin and a spring diamond pin.

[0013] In some embodiments, the clamping jaw includes a pressing block and a hydraulic rod. The hydraulic rod slidably passes through the positioning plate. One end of the hydraulic rod is connected to a hydraulic cylinder, and the other end of the hydraulic rod is rotatably connected to one end of the pressing block. The other end of the pressing block is used to press the workpiece. A rotating block is provided between the pressing block and the positioning plate, and both ends of the rotating block are rotatably connected to the pressing block and the positioning plate respectively.

[0014] The beneficial effects of the present invention are as follows: 1. The column body of the present invention contacts the workpiece through rollers. When the workpiece moves, the contact between the workpiece and the column body is rolling contact, which avoids scratches on the surface of the workpiece when the pre-compression device and the workpiece move relatively. In addition, the contact between the roller and the workpiece is line contact, and the contact area with the workpiece is small, which has little impact on the positioning of the workpiece and is convenient for the positioning of the workpiece.

[0015] 2. The seal of the present invention adopts a grease filling screw. By screwing out the grease filling screw, lubricating oil can be added into the sliding hole to ensure the lubrication between the column body and the sliding hole.

[0016] 3. The present invention avoids the leakage of lubricating oil and the entry of impurities into the sliding hole by providing a guide ring and arranging a sealing ring in the guide ring.

[0017] 4. The present invention is convenient for adjusting the pre-compression force by providing an adjusting member.

[0018] 5. The present invention provides a mounting block with waist-shaped holes, which is convenient for manual adjustment and has strong compatibility. Description of the Drawings

[0019] Figure 1 It is a three-dimensional view of the pre-compression device of the present invention; Figure 2 Top view of the pre - pressing device of the present invention; Figure 3 For the present invention Figure 2 C - C sectional view; Figure 4 3D view of the fixture of the present invention; Figure 5 Front view of the fixture of the present invention; Figure 6 is Figure 4 Enlarged view at position A in Reference numerals: bottom plate 1; vertical plate 2; positioning plate 3; clamping jaw 4; pressing block 401; hydraulic rod 402; rotating block 403; pre - pressing device 5; pre - pressing main body 501; cylinder 502; roller 503; spring 504; limit screw 505; first locking nut 506; adjusting screw 507; second locking nut 508; grease filling screw 509; guide ring 510; sealing ring 511; pin column 512; mounting block 513; first mounting hole 514; second mounting hole 515. Detailed implementation manners

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] As Figures 1 to 3 shown, the present invention provides a manually adjustable roller - type pre - pressing device, including a pre - pressing main body 501. A sliding hole is opened in the pre - pressing main body 501. The sliding hole is a through - hole penetrating the pre - pressing main body 501. A cylinder 502 is slidably arranged in the sliding hole. One end of the cylinder 502 is connected to the pre - pressing main body 501 through an elastic member (wherein, the elastic member uses a spring 504. One end of the spring 504 abuts against the pre - pressing main body 501, and the other end of the spring 504 abuts against a blind hole opened at the end of the cylinder 502). The other end of the cylinder 502 extends out of the sliding hole and a roller 503 is movably arranged. The roller 503 is rotatably connected to the cylinder 502 through a pin column 512. The roller 503 is used for rolling contact with the workpiece and pressing the workpiece.

[0022] It can be understood that when pre - pressing the workpiece, the workpiece will squeeze the cylinder 502. The cylinder 502 contacts the workpiece through the roller 503. When the workpiece moves, the contact between the workpiece and the cylinder 502 is rolling contact, which avoids scratches on the workpiece surface when the pre - pressing device 5 and the workpiece move relatively. In addition, the contact between the roller 503 and the workpiece is line contact, and the friction force between the workpiece and the roller 503 is small, which is convenient for positioning the workpiece.

[0023] In some embodiments, asFigure 3 As shown in the figure, a limiting hole is formed on the pre-pressing main body 501. The limiting hole communicates with the sliding hole. A limiting member is arranged on the limiting hole. A limiting groove is formed on the column body 502. One end of the limiting member extends into the sliding hole and cooperates with the limiting groove to limit the axial movement range of the column body 502. Among them, the limiting member adopts a limiting screw 505. The limiting screw 505 is threadedly connected with the limiting hole, and a first locking nut 506 is threadedly arranged on the limiting screw 505.

[0024] In some embodiments, as Figure 3 shown, an oil filling hole is formed on the pre-pressing main body 501. The oil filling hole communicates with the sliding hole. A sealing member is arranged on the oil filling hole. The sealing member adopts a grease filling screw 509. By screwing out the grease filling screw 509, lubricating oil can be added into the sliding hole to ensure the lubrication between the column body 502 and the sliding hole.

[0025] In some embodiments, in order to prevent the leakage of lubricating oil and the entry of impurities into the sliding hole, as Figure 3 shown, a guide ring 510 is fixedly arranged on the inner wall of one end of the sliding hole close to the roller 503. The guide ring 510 is in interference fit with the sliding hole. A sealing ring 511 is arranged between the guide ring 510 and the column body 502. Among them, the sealing ring 511 is arranged in a sealing groove formed on the inner wall of the guide ring 510.

[0026] In some embodiments, as Figure 3 shown, an adjusting member is threadedly arranged on the inner wall of the end of the sliding hole far from the roller 503. One end of the adjusting member extends into the sliding hole, and one end of an elastic member abuts against the adjusting member. The adjusting member adopts an adjusting screw 507. The adjusting screw 507 is threadedly connected with the sliding hole, and a second locking nut 508 is arranged on the adjusting screw 507. By rotating the adjusting screw 507, the magnitude of the acting force of the spring 504 on the column body 502 can be adjusted, so as to adjust the pre-pressing force.

[0027] In some embodiments, as Figure 1 、 3 shown, an installation block 513 is arranged on the pre-pressing main body 501. A first installation hole 514 and a second installation hole 515 are arranged on the installation block 513. Both the first installation hole 514 and the second installation hole 515 are waist-shaped holes. The first installation hole 514 is used for the installation of the installation block 513, and the second installation hole 515 is used for the installation of the pre-pressing main body 501. Both the first installation hole 514 and the second installation hole 515 adopt waist-shaped holes, which are convenient for manually adjusting the position of the pre-pressing device 5 and have strong compatibility.

[0028] As Figures 4 to 6 shown, the present invention provides a fixture, which includes a bottom plate 1. A vertical plate 2 is fixedly arranged on the bottom plate 1. A plurality of positioning plates 3, a plurality of clamping claws 4 and a plurality of pre-pressing devices 5 are arranged on the vertical plate 2. Figure 5Three positioning plates 3, three clamping jaws 4 and two pre-clamping devices 5 are shown schematically. Elastic positioning pins are arranged on the positioning plates 3. The positioning plates 3 are used to provide a positioning surface for the workpiece, the elastic positioning pins are used for positioning the workpiece, the pre-clamping devices 5 are used to pre-clamp the workpiece on the positioning surface, and the clamping jaws 4 are used to clamp and fix the workpiece on the vertical plate 2.

[0029] It can be understood that when pre-clamping the workpiece, the operator loads the workpiece onto the positioning plate 3 and the elastic positioning pins. During this process, the workpiece will first contact the roller 503 of the pre-clamping device 5. The roller 503 and the cylinder 502 are axially displaced under the action of the workpiece. When the workpiece contacts the positioning plate 3 and is positioned by the elastic positioning pin, the cylinder 502 makes the lower half of the roller 503 press on the workpiece away from the spring 504 side under the action of the spring 504, so as to pre-clamp the workpiece and prevent the workpiece from falling off the vertical plate 2. By arranging two pre-clamping devices 5 in the figure, it is convenient for manual loading while ensuring that the workpiece can be clamped.

[0030] In some embodiments, the pre-clamping device 5 is arranged close to the elastic positioning pin.

[0031] In the present invention, arranging the pre-clamping device 5 close to the elastic positioning pin is beneficial to the stability of the workpiece, that is, it can make the workpiece close to the positioning surface. If the pre-clamping device 5 is arranged at a position far from the elastic positioning pin, the workpiece may warp, resulting in the automatic clamping of the clamping jaw 4 being not in place.

[0032] In some embodiments, the elastic positioning pin includes a spring round pin and a spring diamond pin.

[0033] In some embodiments, as Figure 6 shown, the clamping jaw 4 includes a pressing block 401 and a hydraulic rod 402. The hydraulic rod 402 is slidably arranged on the positioning plate 3. One end of the hydraulic rod 402 is connected to a hydraulic cylinder, and the other end of the hydraulic rod 402 is connected to one end of the pressing block 401. The other end of the pressing block 401 is used to clamp the workpiece. A rotating block 403 is arranged between the pressing block 401 and the positioning plate 3. Both ends of the rotating block 403 are rotatably connected to the pressing block 401 and the positioning plate 3 respectively. By driving the hydraulic rod 402 to extend by the hydraulic cylinder, it can be controlled that the pressing block 401 presses down at the end away from the hydraulic rod 402 to clamp the workpiece. In addition, the positioning plate 3 and the pressing block 401 are arranged correspondingly, so that the pressing block 401 just presses the workpiece on the positioning plate 3.

[0034] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A manually adjustable roller-type pre-pressing device, characterized in that: It includes a pre - pressing main body (501). A sliding hole is formed in the pre - pressing main body (501). A column (502) is slidably arranged in the sliding hole. One end of the column (502) is connected to the pre - pressing main body (501) through an elastic member. The other end of the column (502) extends out of the sliding hole and a roller (503) is movably arranged. The roller (503) is used for rolling contact with the workpiece and pressing the workpiece.

2. The manually adjustable roller type pre-pressing device according to claim 1, wherein: A limiting hole is formed in the pre - pressing main body (501). The limiting hole communicates with the sliding hole. A limiting member is arranged on the limiting hole. A limiting groove is formed in the column (502). One end of the limiting member extends into the sliding hole and cooperates with the limiting groove to limit the axial movement range of the column (502).

3. The manually adjustable roller type pre-pressing device according to claim 1, wherein: An oil - filling hole is formed in the pre - pressing main body (501). The oil - filling hole communicates with the sliding hole. A sealing member is arranged on the oil - filling hole.

4. The manually adjustable roller-type pre-pressing device according to claim 3, characterized in that: A guide ring (510) is fixedly arranged on the inner wall of one end of the sliding hole close to the roller (503). A sealing ring (511) is arranged between the guide ring (510) and the column (502).

5. The manually adjustable roller type pre-pressing device according to any one of claims 1 to 4, characterized in that: An adjusting member is arranged on the inner wall of the other end of the sliding hole far from the roller (503) by threading. One end of the adjusting member extends into the sliding hole. One end of the elastic member abuts against the adjusting member.

6. The manually adjustable roller type pre-pressing device according to any one of claims 1 to 4, characterized in that: An installation block (513) is arranged on the pre - pressing main body (501). A first installation hole (514) and a second installation hole (515) are arranged on the installation block (513). Both the first installation hole (514) and the second installation hole (515) are waist - shaped holes. The first installation hole (514) is used for the installation of the installation block (513), and the second installation hole (515) is used for the installation of the pre - pressing main body (501).

7. A fixture, comprising the manually adjustable roller type pre-pressing device according to any one of claims 1 to 6, characterized in that: It further includes a vertical plate (2). A plurality of positioning plates (3), a plurality of pressing claws (4) and a plurality of the pre - pressing devices (5) are arranged on the vertical plate (2). Elastic positioning pins are arranged on the positioning plates (3). The positioning plates (3) are used to provide a positioning surface for the workpiece. The elastic positioning pins are used for the positioning of the workpiece. The pre - pressing devices (5) are used to pre - press the workpiece on the positioning surface. The pressing claws (4) are used to press and fix the workpiece on the vertical plate (2).

8. The fixture according to claim 7, characterized in that: The pre - pressing device (5) is arranged close to the elastic positioning pin.

9. The fixture according to claim 7, characterized in that: The elastic positioning pin includes a spring round pin and a spring diamond pin.

10. The fixture according to claim 7, characterized in that: The pressing claw (4) includes a pressing block (401) and a hydraulic rod (402). The hydraulic rod (402) slidably penetrates through the positioning plate (3). One end of the hydraulic rod (402) is connected to a hydraulic cylinder. The other end of the hydraulic rod (402) is rotatably connected to one end of the pressing block (401). The other end of the pressing block (401) is used to press the workpiece. A rotating block (403) is arranged between the pressing block (401) and the positioning plate (3). Both ends of the rotating block (403) are rotatably connected to the pressing block (401) and the positioning plate (3) respectively.

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