Anti-upwarp flat tongs

Abstract

The utility model relates to the technical field of flat tongs, in particular to anti-upwarp flat tongs which comprise a tong body, a fixed jaw is fixedly connected to one side of the tong body, a guide rail face located on one side of the fixed jaw is arranged on the upper end face of the tong body, and a movable tong body is connected to the guide rail face in a sliding mode. The side, close to the fixed jaw, of the movable vise body is fixedly connected with a movable vise base, the side, close to the fixed jaw, of the movable vise base is provided with an inclined face, the distance between the upper end of the inclined face and the movable vise body is larger than that between the lower end of the inclined face and the movable vise body, and the inclined face is in contact with a movable jaw located on the guide rail face. An ejector block is arranged below the movable jaw, and the movable vice body is connected with a lifting piece which is connected with the ejector block so as to enable the ejector block to ascend and descend. According to the utility model, the movable jaw is forced to press the top block downwards, so that the movable clamp seat does not tilt, a workpiece to be machined does not tilt upwards, and higher clamping precision can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of parallel clamps, in particular to an anti-upward-tilting parallel clamp. Background Art

[0002] In daily machining, the parallel clamp, as a commonly used fixture, is widely used in workpiece machining. However, when clamping the workpiece, it is very easy for the workpiece to tilt upward, resulting in the verticality and parallelism of the workpiece not meeting the requirements, seriously affecting the product quality and production efficiency of the workpiece.

[0003] On August 24, 2016, a patent with the publication number CN105881252A and the name of "anti-upward-tilting" parallel clamp was published, including: a lead screw, a movable clamp body, a movable clamp jaw, a compression spring and a limit screw; the movable clamp jaw is in inclined contact with the movable clamp body, and the compression spring and the limit screw are automatically restored and limit-connected to generate a downward pressure on the movable clamp jaw. Through the frictional force between the movable clamp jaw and the workpiece, the workpiece moves downward without "tilting upward"; however, the applicant found that in the case of long-term use, the guide rail is worn, resulting in a gap between the movable clamp jaw and the guide rail. When the workpiece is clamped tightly, the movable clamp jaw will be lifted upward and tilt upward, and products with slightly higher precision cannot be machined. Summary of the Invention

[0004] In view of this, the purpose of the present utility model is to provide an anti-upward-tilting parallel clamp to solve the problem that it is impossible to ensure a high clamping accuracy.

[0005] Based on the above purpose, the present utility model provides an anti-upward-tilting parallel clamp, including a clamp body. One side of the clamp body is fixedly connected with a fixed clamp jaw. The upper end surface of the clamp body is provided with a guide rail surface on one side of the fixed clamp jaw. A movable clamp body is slidably connected to the guide rail surface. One side of the movable clamp body close to the fixed clamp jaw is fixedly connected with a movable clamp seat. One side of the movable clamp seat close to the fixed clamp jaw is provided with an inclined surface. The distance between the upper end of the inclined surface and the movable clamp body is greater than the distance between the lower end of the inclined surface and the movable clamp body. The inclined surface is in contact with a movable clamp jaw located on the guide rail surface. A top block is arranged below the movable clamp jaw. The movable clamp body is connected with a lifting member connected to the top block to lift and lower the top block.

[0006] Optionally, the lifting member includes an adjusting screw and a locking nut arranged in cooperation with the adjusting screw. The upper end of the adjusting screw is connected to the top block.

[0007] Optionally, the lifting member is a driving telescopic rod connected to the movable clamp body, and the telescopic end of the driving telescopic rod is connected to the top block.

[0008] Optionally, a pressing plate located at the lower part of the movable jaw body is arranged between the movable jaw body and the lifting member, and the lifting member is arranged on the pressing plate.

[0009] Optionally, the guide rail surface is provided with a track groove slidably connected to the movable jaw body, and a track block fixedly connected to the movable jaw body is slidably engaged in the track groove.

[0010] Optionally, a clamping chute parallel to the end face of the inclined surface is provided on the inclined surface, and a clamping slider slidably connected to the clamping chute is arranged on the movable jaw.

[0011] Advantages of the present invention: For the anti-upward warping flat-jaw vice provided by the present invention, when the guide rail surface is worn, first control the top block to rise through the lifting member so that the upper end of the top block abuts against the bottom of the movable jaw. Then, when clamping the workpiece to be machined, the movable jaw body and the connected movable jaw base push the movable jaw towards the fixed jaw. The movable jaw is forced to press down on the top block, that is, the movable jaw presses down on the side of the movable jaw body close to the fixed jaw, so that the movable jaw base does not warp, thereby eliminating the gap between the movable jaw and the movable jaw base, preventing the workpiece to be machined from warping upward, and ensuring a high clamping accuracy. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the first flat-jaw vice in the prior art;

[0014] Figure 2 It is a schematic structural diagram of the second flat-jaw vice in the prior art;

[0015] Figure 3 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0016] Figure 4 It is a schematic top view structural diagram of Embodiment 1 of the present invention;

[0017] Figure 5 It is a schematic partial cross-sectional structural diagram of Embodiment 1 of the present invention;

[0018] Figure 6 It is a schematic partial cross-sectional structural diagram of Embodiment 2 of the present invention.

[0019] In the figure: 1. Clamp body; 2. Movable clamp body; 3. Lead screw; 4. Fixed jaw; 5. Guide rail surface; 6. Pressure plate; 7. Movable clamp base; 8. Movable jaw; 9. Top block; 10. Adjusting screw; 11. Locking nut; 12. Track groove; 13. Track block; 14. Card chute; 101. First workpiece; 102. First movable clamp; 201. Second workpiece; 202. Second movable clamp; 203. Second jaw. Detailed implementation mode

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present utility model should have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0022] As Figure 1 shown, for the first flat-jaw vice in the prior art, when the guide rail is worn, there is a gap between the first movable clamp 102 and the first guide rail body. When the first movable clamp 102 and the first workpiece 101 are stressed, they will warp upwards, as Figure 1 shown by the warping of the first workpiece 101 in

[0023] As Figure 2 shown, for the second flat-jaw vice in the prior art, when the guide rail is worn, there is a gap between the second movable clamp 202 and the second guide rail body. When the second movable clamp 202 pushes the second jaw 203 to clamp the second workpiece 201, the second movable clamp 202 will warp upwards, resulting in the lower part of the second jaw 203 being clamped and there being a gap between the upper part of the second jaw 203 and the second movable clamp 202. In this way, the second movable clamp 202 cannot clamp tightly, as Figure 2 shown by the lower part of the second jaw 203 being clamped and there being a gap on the side of the upper part close to the second movable clamp 202 in Embodiment

[0024] As Figure 3 、Figure 4 and Figure 5 As shown in Figure 5 , an anti - warping flat - mouth vise includes a vise body 1. A fixed jaw 4 is fixedly connected to one side of the vise body 1. A guide rail surface 5 is provided on the upper end surface of the vise body 1 on one side of the fixed jaw 4. A movable jaw body 2 is slidably connected to the guide rail surface 5. A movable jaw base 7 is fixedly connected to one side of the movable jaw body 2 close to the fixed jaw 4. An inclined surface is provided on one side of the movable jaw base 7 close to the fixed jaw 4. The distance between the upper end of the inclined surface and the movable jaw body 2 is greater than the distance between the lower end of the inclined surface and the movable jaw body 2. A movable jaw 8 located on the guide rail surface 5 is in contact with the inclined surface. A top block 9 is provided below the movable jaw 8. The movable jaw body 2 is connected with a lifting member connected to the top block 9 to lift and lower the top block 9.

[0025] When the guide rail surface 5 is worn, before clamping the workpiece to be machined, the lifting member controls the top block 9 to rise, so that the upper end of the top block 9 abuts against the bottom of the movable jaw 8. In this way, when clamping the workpiece to be machined, the workpiece to be machined is placed between the fixed jaw 4 and the movable jaw 8. The movable jaw body 2 and the connected movable jaw base 7 push the movable jaw 8 towards the fixed jaw 4. The movable jaw 8 is forced to press down the top block 9, that is, the movable jaw 8 presses down one side of the movable jaw body 2 close to the fixed jaw 4, so that the movable jaw base 7 does not warp, thereby eliminating the gap between the movable jaw 8 and the movable jaw base 7, causing the workpiece to be machined not to warp and ensuring a high clamping accuracy.

[0026] A pressing plate 6 is provided between the movable jaw body 2 and the lifting member at the lower part of the movable jaw body 2. The lifting member is arranged on the pressing plate 6. The pressing plate 6 can be on the outside or inside of the movable jaw body 2. Further, the lifting member can be arranged on the outside or inside of the vise body 1. After the guide rail surface 5 is worn, the lifting member controls the top block 9 to rise so that the upper end of the top block 9 abuts against the bottom of the movable jaw 8. When clamping the workpiece to be machined, the movable jaw body 2 and the connected movable jaw base 7 push the movable jaw 8 towards the fixed jaw 4. The movable jaw 8 is forced to press down the top block 9, and then the movable jaw 8 presses down the pressing plate 6, thereby eliminating the gap between the movable jaw 8 and the movable jaw base 7, causing the workpiece to be machined not to warp and ensuring a high clamping accuracy.

[0027] The lifting member is convenient for controlling the lifting of the top block 9. The lifting member includes an adjusting screw 10 connected to the pressing plate 6 and a locking nut 11 arranged in cooperation with the adjusting screw 10. The upper end of the adjusting screw 10 is connected to the top block 9. Controlling the up - and - down movement of the adjusting screw 10 controls the lifting of the top block 9. Rotating the locking nut 11 locks the adjusting screw 10 on the pressing plate 6 and thus locks it on the movable jaw body 2.

[0028] The above-mentioned lifting member can be replaced. The lifting member can also be a driving telescopic rod connected to the movable jaw body 2. The telescopic end of the driving telescopic rod is connected to the top block 9, and the driving telescopic rod expands and contracts to control the lifting of the top block 9.

[0029] The guide rail surface 5 is provided with a track groove 12 for sliding connection with the movable jaw body 2. A track block 13 fixedly connected to the movable jaw body 2 is slidably engaged in the track groove 12. A lead screw 3 that is in threaded cooperation with the movable jaw body 2 is provided in the jaw body 1 and located in the track groove 12. One end of the lead screw 3 extending out of the jaw body 1 is connected to a rotating seat. Rotating the rotating seat rotates the lead screw 3, driving the movable jaw body 2 to move left and right along the track groove 12.

[0030] A clamping chute 14 parallel to the end face of the inclined surface is provided on the inclined surface. A clamping slider slidably connected to the clamping chute 14 is provided on the movable jaw 8, and the clamping slider and the movable jaw 8 can be integrally formed. Embodiment

[0031] An anti-upward warping flat-jaw vice, comprising a jaw body 1. A fixed jaw 4 is fixedly connected to one side of the jaw body 1. A guide rail surface 5 is provided on the upper end face of the jaw body 1 and located on one side of the fixed jaw 4. A movable jaw body 2 is slidably connected to the guide rail surface 5. A movable jaw seat 7 is fixedly connected to one side of the movable jaw body 2 close to the fixed jaw 4. An inclined surface is provided on one side of the movable jaw seat 7 close to the fixed jaw 4. The distance between the upper end of the inclined surface and the movable jaw body 2 is greater than the distance between the lower end of the inclined surface and the movable jaw body 2. A movable jaw 8 located on the guide rail surface 5 is in contact with the inclined surface. A top block 9 is provided below the movable jaw 8. The movable jaw body 2 is connected to a lifting member connected to the top block 9 to lift the top block 9.

[0032] The guide rail surface 5 is provided with a track groove 12 for sliding connection with the movable jaw body 2. A track block 13 fixedly connected to the movable jaw body 2 is slidably engaged in the track groove 12. A lead screw 3 that is in threaded cooperation with the movable jaw body 2 is provided in the jaw body 1 and located in the track groove 12.

[0033] The lifting member can be arranged on the track block 13 connected to the movable jaw body 2, without being arranged on the pressing plate 6. As Figure 6 shown, the lifting member includes an adjusting screw 10 arranged on the track block 13 and a locking nut 11 arranged in cooperation with the adjusting screw 10. A threaded hole for cooperating with the adjusting screw 10 is provided on the track block 13. The upper end of the adjusting screw 10 is connected to the top block 9. Controlling the up and down movement of the adjusting screw 10 controls the lifting of the top block 9. Rotating the locking nut 11 locks the adjusting screw 10 on the track block 13.

[0034] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present utility model is limited to these examples; under the concept of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present utility model as described above, and they are not provided in detail for the sake of brevity.

[0035] The embodiments of the present utility model are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-upward flat-nose pliers, comprising a pliers body, a fixed jaw is fixedly connected to one side of the pliers body, a guide surface is provided on the upper end surface of the pliers body on one side of the fixed jaw, and a movable pliers body is slidably connected to the guide surface, characterized in that: A movable jaw seat is fixedly connected to one side of the movable jaw body close to the fixed jaw, an inclined surface is provided on one side of the movable jaw seat close to the fixed jaw, the distance between the upper end of the inclined surface and the movable jaw body is greater than the distance between the lower end of the inclined surface and the movable jaw body, the inclined surface contacts a movable jaw located on the guide rail surface, a top block is provided below the movable jaw, and the movable jaw body is connected to a lifting member connected to the top block for lifting and lowering the top block.

2. The anti-upward flat-nose pliers according to claim 1, characterized in that: The lifting member comprises an adjusting screw and a locking nut matched with the adjusting screw, and the upper end of the adjusting screw is connected to the top block.

3. The anti-upward flat-nose pliers according to claim 1, characterized in that: The lifting member is a driving telescopic rod connected to the movable clamp body, and the telescopic end of the driving telescopic rod is connected to the top block.

4. The anti-upward flat-nose pliers according to claim 1, 2 or 3, characterized in that: A pressing plate located at the lower part of the movable clamp body is arranged between the movable clamp body and the lifting member, and the lifting member is arranged on the pressing plate.

5. The anti-upward flat-nose pliers according to claim 1, characterized in that: The guide rail surface is provided with a rail groove which is slidably connected to the movable clamp body, and a rail block which is fixedly connected to the movable clamp body is slidably matched in the rail groove.

6. The anti-upward flat-nose pliers according to claim 1, characterized in that: The inclined surface is provided with a card sliding groove which is arranged parallel to the end surface of the inclined surface, and the movable jaw is provided with a card sliding block which is slidably connected with the card sliding groove.

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