Clamp chuck and clamp

Abstract

The clamp chuck comprises a clamping block assembly and a limiting piece, the clamping block assembly comprises two clamping blocks which are oppositely arranged, and a protruding part extending in the vertical direction is arranged on the side, facing the other clamping block, of each clamping block in a protruding mode; the edge, extending in the vertical direction, of the side, facing the pipeline, of the protruding part is in cambered surface transition. The two clamping blocks can move to be close to or away from each other, so that the protruding parts are close to or separated from the pipeline so as to flatten or loosen the pipeline. At least one of the two clamping blocks is provided with a limiting piece, the limiting piece comprises two limiting ends extending in the horizontal direction, the two limiting ends are arranged at intervals in the vertical direction, and the distance between the two limiting ends is matched with the diameter of the pipeline so that movement of the pipeline in the vertical direction can be limited in the flattening process. The edges of the protruding parts are in cambered surface transition, shearing force is not generated on the pipeline, meanwhile, the limiting pieces limit the pipeline in the vertical direction, and the risk of shearing the pipeline is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of machining, and more specifically to a clamping chuck for flattening and sealing a degassing tube. Background Technology

[0002] After the powder in the packaging is degassed, a hydraulic clamp is used to flatten the degassed tube. After flattening, the flattened portion of the tube is cut off, thus detaching the packaging from the vacuum equipment and facilitating subsequent hot isostatic pressing. In related technologies, during operation, one operator holds the degassed tube still while another person lifts the clamps with both hands, moving them until the degassed tube is positioned in the middle of the clamp heads for flattening. Manually holding the pipe provides poor stability; the pipe can move under stress, especially vertically during flattening. The shearing force exerted by the clamps on the pipe can easily cause it to break, further reducing or even eliminating the sealing effect. Utility Model Content

[0003] In view of this, this application proposes a clamp chuck to solve the above-mentioned technical problems.

[0004] According to this application, a clamp chuck is provided, the clamp chuck comprising:

[0005] The clamping block assembly includes two clamping blocks arranged opposite each other. Each clamping block has a protrusion extending vertically on the side facing the other clamping block. The edge of the protrusion extending vertically on the side facing the pipe has an arc transition. The two clamping blocks can be moved closer to or further away from each other, so that the protrusion approaches or disengages from the pipe for clamping or releasing the pipe.

[0006] A limiting element is provided on at least one of the two clamping blocks, wherein the limiting element includes two limiting ends extending in a horizontal direction, the two limiting ends being arranged at a distance in a vertical direction, and the distance between the two limiting ends matching the diameter of the pipe to be flattened, so as to restrict the vertical movement of the pipe during the flattening process.

[0007] Furthermore, the limiting member includes a first limiting member and a second limiting member, which are respectively installed on the two clamping blocks. The limiting end of the first limiting member and the limiting end of the second limiting member are offset from each other in the axial direction of the pipe.

[0008] Furthermore, the first limiting member has a protrusion on the side facing the clamping block, so that the limiting end of the first limiting member is spaced apart from the clamping block.

[0009] The thickness of the boss is greater than the thickness of the second limiting member, so that the limiting end of the first limiting member and the limiting end of the second limiting member are misaligned.

[0010] Furthermore, the first limiting member is a plate-shaped member, and the two limiting ends of the first limiting member define a first arc-shaped opening; when the clamping block flattens the pipe, the pipe can be accommodated in the first arc-shaped opening;

[0011] And / or, the second limiting member is a plate-shaped member, and the two limiting ends of the second limiting member define a second arc-shaped opening; when the clamping block flattens the pipe, the pipe can be accommodated in the second arc-shaped opening.

[0012] Furthermore, there are two first limiting members, and the two first limiting members are respectively connected to both sides of one of the clamping blocks along the axial direction of the pipe;

[0013] The number of the second limiting members is two, and the two second limiting members are respectively connected to both sides of the other clamping block along the axial direction of the pipe;

[0014] Each of the first limiting members is provided with a corresponding second limiting member.

[0015] Furthermore, the clamping block includes grooves located on both sides of the protrusion; the grooves open toward the other clamping block to avoid undeformed pipes when clamping the pipe.

[0016] Furthermore, the groove is an arc-shaped groove, and the diameter of the arc-shaped groove is larger than the diameter of the pipe.

[0017] Furthermore, the clamping block is made of cemented carbide steel.

[0018] According to this application, a clamp is also proposed, characterized in that the clamp includes a clamp head as described above.

[0019] According to the technical solution of this application, the limiting component can limit the pipe when it is flattened, prevent the pipe from shifting in the vertical direction, and improve the sealing success rate.

[0020] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0022] Figure 1 An exploded view of a clamp chuck according to one embodiment of this application;

[0023] Figure 2 This is a front view of a clamp chuck according to one embodiment of this application;

[0024] Figure 3 for Figure 2 The top view of the clamp chuck shown. Detailed Implementation

[0025] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] Terms such as "first," "second," "horizontal direction," and "vertical direction" used in this application are for distinguishing different features or for facilitating understanding of their structure, and are not intended to limit this application. These terms can be used interchangeably under different working conditions.

[0027] This application provides a clamping head, applied to clamps, and particularly suitable for a hydraulic clamping head used for flattening and sealing a degassing tube in a packaging system. The main function of this clamping head is to provide a convenient and quick flattening tool for the degassing tube after powder filling and degassing. Since the degassing tube is directly connected to the vacuum equipment, after powder filling and degassing, the degassing tube needs to be flattened using a hydraulic clamping head. After flattening, the flattened portion of the degassing tube is cut off, thereby detaching the packaging from the vacuum equipment and facilitating subsequent hot isostatic pressing of the packaging. In the prior art, when the hydraulic clamping head flattens the degassing tube, it easily shears the thicker sides of the degassing tube, causing the degassing tube to crack; resulting in packaging seal failure.

[0028] The technical solution of this application aims to solve the above problems, ensuring that the degassing tube is smoothly clamped without damage. It also guarantees a sealed casing, reduces operational difficulty, and improves production efficiency.

[0029] According to one aspect of this application, a clamping head is provided, the clamping head including a clamping block assembly and a limiting member. The clamping block assembly includes two clamping blocks 110 arranged opposite to each other. Each clamping block 110 has a protrusion 111 extending vertically on the side facing the other clamping block 110. The edge of the protrusion 111 extending vertically on the side facing the pipe 500 has an arc transition. The two clamping blocks 110 are movable to move closer to or further away from each other, so that the protrusion 111 approaches or disengages from the pipe 500 for clamping or releasing the pipe 500. At least one of the two clamping blocks 110 is equipped with a limiting member, wherein the limiting member includes two limiting ends 140 extending horizontally, the two limiting ends 140 being arranged vertically at intervals, and the distance between the two limiting ends 140 matching the diameter of the pipe 500 to limit the vertical movement of the pipe 500 during the clamping process.

[0030] refer to Figure 1 and Figure 2 As shown, both the horizontal and vertical directions are perpendicular to the axis of the pipe. The horizontal direction is the relative movement direction of the two clamps, and the vertical direction is perpendicular to the horizontal direction.

[0031] It is understandable that the protrusion 111 is used to flatten the pipe 500. The edge of the protrusion 111 extending vertically towards the pipe 500 is a curved transition, so that when the protrusion 111 is squeezed to flatten the pipe 500, its edge does not generate shear force on the pipe 500, which greatly reduces the risk of the pipe 500 being damaged due to the right-angle edge cutting the pipe 500 during the squeezing.

[0032] Meanwhile, when the pipe 500 is flattened and sealed, the two limiting ends 140 of the limiting member can respectively clamp the top and bottom ends of the vertical cross-section of the pipe 500, thereby preventing the pipe 500 from moving in the vertical direction and avoiding the edge of the clamping block during the flattening process. Figure 1 The image shows the upper edge 1121 of the clamping block facing the pipe (the edge of the clamping block also includes the lower edge of the clamping block facing the pipe). The clamping block compresses the pipe 500 and generates a shearing force, which reduces the possibility of damage to the pipe 500 and subsequent sealing, and greatly improves the sealing success rate.

[0033] In the technical solution of this application, the limiting member can take an appropriate form to be respectively clamped at the upper and lower ends of the cross-section of the pipe 500. For example, the limiting member may include two horizontally extending protruding structures (e.g., columnar, strip-shaped, or plate-shaped), which serve as limiting ends. The distance between these two protruding structures matches the diameter of the pipe 500, thereby clamping the pipe 500. The two protruding structures can be an integral structure or a separate structure. Alternatively, to be applicable to pipes 500 of different diameters, the limiting member can be detachably installed on the clamping block by means of bolts, slots, etc. The distance between the two limiting ends of different limiting members can match different pipe 500 diameters. Or, the limiting member can be adjusted, for example, the two limiting ends are connected by a screw, so that the distance between the two limiting ends can be adjusted by adjusting the screw nut. In addition, the limiting member may include one or more. For example, a limiting member can be installed at the end of either of the two clamping blocks, as long as the limiting end can protrude from the clamping block. The two limiting members can be installed at the front and rear of the two clamping blocks respectively, etc., and there are no restrictions here.

[0034] refer to Figure 2In this application, the limiting end 140 of the limiting member extends toward the pipe 500 and protrudes from the side of the protrusion 111 facing the pipe 500. Thus, during the process of flattening the pipe 500, before the protrusions 111 of the two clamping blocks 110 simultaneously contact the pipe 500, the limiting end 140 of the limiting member clamps the pipe 500 at both the upper and lower ends of the pipe 500 cross-section to limit the pipe 500 in the vertical direction. Furthermore, during the process of the clamping blocks 110 squeezing the pipe 500, the two clamping blocks 110 limit the pipe 500 in the horizontal direction. Therefore, the pipe 500 is restricted by the limiting member and the clamping blocks during the flattening process, which greatly improves the success rate of flattening and sealing.

[0035] refer to Figure 2 In this application, the length of the protrusion 1111 in the vertical direction is greater than the diameter of the pipe 500. When the pipe 500 is flattened, the pipe 500 is positioned at approximately the middle of the protrusion 111 so that the upper and lower ends of the protrusion 111 in the vertical direction protrude beyond the upper and lower ends of the pipe 500 in the vertical direction. In this way, when the pipe is flattened, the upper and lower ends of the protrusion 111 in the vertical direction will not exert pressure or shear on the pipe 500.

[0036] According to a preferred embodiment, such as Figure 1 or Figure 3 As shown, the limiting component includes a first limiting component 120 and a second limiting component 130. The first limiting component 120 and the second limiting component 130 are respectively installed on two clamping blocks 110. The limiting end 140 of the first limiting component 120 and the limiting end 140 of the second limiting component 130 are offset in the axial direction of the pipeline 500.

[0037] In this embodiment, the first limiting member 120 has a protrusion 122 on the side facing the clamping block 110, so that the limiting end 140 of the first limiting member 120 is spaced apart from the clamping block 110; wherein, the thickness of the protrusion 122 is greater than the thickness of the second limiting member 130, so that the limiting end of the first limiting member 120 and the limiting end of the second limiting member 130 are misaligned.

[0038] In the technical solution of this application, the first limiting member 120 can have different thicknesses, that is, the limiting end can have a first thickness, the boss 122 can have a second thickness, and the second limiting member 130 can have a uniform thickness. The boss 122 can separate the limiting end of the first limiting member from the clamping block 110 by a certain distance, which is greater than the thickness of the second limiting member 130. Therefore, when the clamping block 110 completely flattens the pipe 500, the limiting end of the second limiting member 130 can intersect with the limiting end of the first limiting member 120 to avoid collision.

[0039] According to a preferred embodiment, such as Figures 1 to 3As shown, the first limiting member 120 is a plate-shaped member, and the two limiting ends 140 of the first limiting member 120 define a first arc-shaped opening 121; and when the clamping block flattens the pipe 500, the pipe 500 can be accommodated in the first arc-shaped opening 121.

[0040] The second limiting member 130 is a plate-shaped member, and the two limiting ends 140 of the second limiting member 130 define a second arc-shaped opening 131; and when the clamping block flattens the pipe 500, the pipe 500 can be accommodated in the second arc-shaped opening 131.

[0041] In the technical solution of this application, the limiting member is made of plate material. The first limiting member 120 may have a first arc-shaped opening 121, and the second limiting member 130 may have a second arc-shaped opening 131. The first arc-shaped opening 121 and the second arc-shaped opening 131 are arranged opposite to each other, so that the limiting end 140 can act as a limiting member to limit the pipe 500. In this embodiment, both the first arc-shaped opening 121 and the second arc-shaped opening 131 may include a circumferential portion and an extension portion, wherein the circumferential portion is a semicircle, and its diameter can match the diameter of the pipe 500, such as... Figure 2 As shown, both the first arc-shaped opening 121 and the second arc-shaped opening 131 can extend a certain distance horizontally from the upper and lower ends of the semicircle, so that a part of the limiting end protrudes from the protrusion 111, thereby achieving the effect of vertically limiting the pipe 500 before the protrusion 111 clamps the pipe 500. Furthermore, as the part of the pipe 500 in contact with the clamping block is flattened, the other part of the pipe 500 can gradually enter the circumference of the first arc-shaped opening 121 and the second arc-shaped opening 131, thereby allowing the limiting member to avoid the pipe 500.

[0042] To enhance the limiting effect and further prevent the pipe 500 from shifting during the clamping process, according to a preferred embodiment, the first limiting member 120 and the second limiting member 130 include two pairs, with each pair of first limiting members 120 and second limiting members 130 respectively disposed at both ends of the two clamping blocks 110. Specifically, there are two first limiting members 120, which are respectively connected to both sides of one clamping block 110 along the axial direction of the pipe 500; there are also two second limiting members 130, which are respectively connected to both sides of the other clamping block 110 along the axial direction of the pipe 500; each first limiting member 120 is correspondingly provided with one second limiting member 130.

[0043] With this application, limiting elements are provided at both the front and rear ends of the clamping block, so that the pipe 500 is limited at three positions, further preventing displacement when the clamping block squeezes the pipe 500.

[0044] To further improve the limiting effect, according to a preferred embodiment, the clamping block 110 includes grooves located on both sides of the protrusion 111, the grooves opening toward the other clamping block 110 and extending in a horizontal direction to avoid the undeformed pipe 500 when clamping the pipe 500.

[0045] In the technical solution of this application, the grooves located on both sides of the protrusion 111 form a support structure for the limiting member, so that there is a certain distance between the limiting member and the protrusion, thereby dispersing the limiting points of the pipe 500. Since the more dispersed the limiting points are, the more the movement of the pipe 500 can be restricted, preventing the pipe 500 from swaying, thus improving the limiting effect. In addition, since only the protrusion 111 squeezes the pipe 500 during the flattening operation, other parts of the pipe 500 are not squeezed and will maintain their original shape. In order not to affect other parts of the pipe 500, the groove has a space that can accommodate the pipe 500. The groove can have different shapes, such as U-shaped groove, semi-circular groove, etc., as long as it can accommodate the pipe 500, there is no limitation here.

[0046] In order to be applicable to pipes 500 of different diameters, according to a preferred embodiment, the groove is an arc-shaped groove 112, the diameter of which is larger than the diameter of the pipe 500.

[0047] In the technical solution of this application, the groove can be in the form of an arc groove 112, and the diameter of the arc groove 112 can match the maximum diameter of the pipe 500 that can be processed, so as to meet the flattening operation of pipes 500 of different sizes, and to avoid the upper and lower edges of the arc groove 112 from squeezing the pipe 500 and causing shearing.

[0048] Correspondingly, different limiting members can have arc-shaped openings of different diameters to correspond to pipes 500 of different diameters. In order to facilitate the replacement of the limiting members, according to a preferred embodiment, the limiting members are detachably installed on the clamping block 110.

[0049] In the technical solution of this application, the limiting component can be installed on the clamping block 110 in various forms such as bolts or snap-fit, so that the limiting component can be quickly and easily disassembled and replaced.

[0050] To accommodate the flattening operations of pipes 500 with varying hardness, according to a preferred embodiment, the clamping block 110 is made of cemented carbide steel. In the technical solution of this application, the clamping block 110 can be made of cemented carbide steel with high hardness, such as carbon steel or tungsten steel, thereby accommodating the flattening operations of pipes 500 with higher hardness.

[0051] According to another aspect of this application, a clamp is also provided, the clamp including the clamp chuck as described above.

[0052] In the technical solution of this application, the clamp can take an appropriate form. For example, the clamp can be a hydraulic clamp, a pneumatic clamp, or a manual clamp without assistance, etc., and no limitation is made here.

[0053] The preferred embodiments of this utility model have been described in detail above with reference to the accompanying drawings; however, this utility model is not limited thereto. Within the scope of the technical concept of this utility model, various simple modifications can be made to the technical solution of this utility model. For example, the plate-shaped limiting member can be changed to a block-shaped limiting member, etc., including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed by this utility model and all fall within the protection scope of this utility model.

Claims

1. A clamp chuck, characterized in that, For clamping flattening pipe (500), the clamp head includes: The clamping block assembly includes two clamping blocks (110) arranged opposite to each other. Each clamping block (110) has a protrusion (111) extending vertically on the side facing the other clamping block (110). The edge of the protrusion (111) extending vertically on the side facing the pipe (500) is arc-shaped. The two clamping blocks (110) can be moved to be closer to or further away from each other, so that the protrusion (111) is close to or away from the pipe (500) for clamping or releasing the pipe (500). A limiting member is installed on at least one of the two clamping blocks (110), wherein the limiting member includes two limiting ends (140) extending in a horizontal direction, the two limiting ends (140) being arranged at intervals in a vertical direction, and the distance between the two limiting ends (140) matching the diameter of the pipe (500) to be flattened, so as to restrict the movement of the pipe (500) in the vertical direction during the flattening process.

2. The clamp chuck according to claim 1, characterized in that, The limiting components include a first limiting component (120) and a second limiting component (130). The first limiting component (120) and the second limiting component (130) are respectively installed on the two clamping blocks (110). The limiting end (140) of the first limiting component (120) and the limiting end (140) of the second limiting component (130) are offset in the axial direction of the pipe (500).

3. The clamp chuck according to claim 2, characterized in that, The first limiting member (120) has a protrusion (122) on the side facing the clamping block (110) so that the limiting end (140) of the first limiting member (120) is spaced apart from the clamping block (110); The thickness of the boss (122) is greater than the thickness of the second limiting member (130) so that the limiting end (140) of the first limiting member (120) and the limiting end (140) of the second limiting member (130) are misaligned.

4. The clamp chuck according to claim 2, characterized in that, The first limiting member (120) is a plate-shaped member, and the two limiting ends (140) of the first limiting member (120) define a first arc-shaped opening (121); when the clamping block flattens the pipe (500), the pipe (500) can be accommodated in the first arc-shaped opening (121); And / or, the second limiting member (130) is a plate-shaped member, and the two limiting ends (140) of the second limiting member (130) define a second arc-shaped opening (131); when the clamping block (110) clamps the pipe (500), the pipe (500) can be accommodated in the second arc-shaped opening (131).

5. The clamp chuck according to claim 2, characterized in that, There are two first limiting members (120), and the two first limiting members (120) are respectively connected to both sides of one clamping block (110) along the axial direction of the pipe (500); There are two second limiting members (130), and the two second limiting members (130) are respectively connected to both sides of another clamping block (110) along the axial direction of the pipe (500); Each of the first limiting members (120) is provided with a corresponding second limiting member (130).

6. The clamp chuck according to claim 1, characterized in that, The clamp (110) includes grooves located on both sides of the protrusion (111); the grooves open toward the other clamp (110) to avoid undeformed pipes (500) when clamping the pipe (500).

7. The clamp chuck according to claim 6, characterized in that, The groove is an arc-shaped groove (112), and the diameter of the arc-shaped groove (112) is larger than the diameter of the pipe (500).

8. The clamp chuck according to claim 1, characterized in that, The clamping block (110) is made of cemented carbide steel.

9. A clamp, characterized in that, The clamp includes a clamp chuck as described in any one of claims 1 to 8.

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