阅读说明：本技术 管接头夹具 (Pipe joint clamp ) 是由 张菊绒 郭慧英 唐玉波 张中全 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种管接头夹具,用于对异形管接头进行装夹定位,管接头夹具包括安装座、用于适应第一接头相对管本体的偏转角度并对第一接头进行定位的定角向机构、用于支撑异形管接头并对第二接头进行定位的定位机构以及用于将定位后的异形管接头压紧在定位机构上的压紧机构,定角向机构包括可拆卸地连接的基座、角向支撑杆以及滑块,基座固定设于安装座上,滑块沿基座的高度方向可滑动地设于基座上,角向支撑杆的第一端可转动地设于滑块上；角向支撑杆的第二端朝向基座的外侧悬设。本发明的管接头夹具,便于根据不同尺寸的异型管接头更换尺寸匹配的角向支撑杆以进行装夹定位,提高了夹具的通用性,降低了异形管接头加工成本、缩减了加工周期。(The invention discloses a pipe joint clamp which is used for clamping and positioning a special-shaped pipe joint and comprises a mounting seat, a fixed angle direction mechanism, a positioning mechanism and a pressing mechanism, wherein the fixed angle direction mechanism is used for adapting to the deflection angle of a first joint relative to a pipe body and positioning the first joint; the second end of the angular support rod is suspended towards the outer side of the base. The pipe joint clamp is convenient for replacing the angular support rods with matched sizes according to the special-shaped pipe joints with different sizes so as to clamp and position, improves the universality of the clamp, reduces the processing cost of the special-shaped pipe joints and shortens the processing period.)

1. A pipe joint clamp is used for clamping and positioning a special-shaped pipe joint, the special-shaped pipe joint comprises a first joint (201), a second joint (202), a third joint (203) and a pipe body (204) connected with the first joint (201), the second joint (202) and the third joint (203), the deflection angle of the first joint (201) relative to the central axis of the pipe body (204) is alpha degrees, and the special-shaped pipe joint clamp is characterized in that,

the pipe joint clamp comprises a mounting seat (101), a fixed angle mechanism (102) for adapting the deflection angle of the first joint (201) relative to the pipe body (204) and positioning the first joint (201), a positioning mechanism (103) for supporting the special-shaped pipe joint and positioning the second joint (202), and a pressing mechanism (104) for pressing the positioned special-shaped pipe joint on the positioning mechanism (103),

the fixed-angle-direction mechanism (102) comprises a base (1021), an angle-direction supporting rod (1022) and a sliding block (1023), wherein the base (1021) is fixedly arranged on the mounting seat (101), the sliding block (1023) is slidably arranged on the base (1021) along the height direction of the base (1021), and a first end of the angle-direction supporting rod (1022) is rotatably arranged on the sliding block (1023); the second end of the angular support rod (1022) is suspended towards the outer side of the base (1021), so that the angular support rod (1022) is adapted to the deflection angle of the first joint (201), and the first joint (201) is positioned through the second end of the angular support rod (1022).

2. The pipe joint clamp according to claim 1,

a first sliding rail is arranged on the surface of the base (1021), the first sliding rail is arranged along the height direction of the base (1021), a first sliding groove corresponding to the first sliding rail is arranged on the sliding block (1023), the first sliding groove is matched with the first sliding rail so that the sliding block (1023) can be slidably arranged relative to the first sliding rail, and a first end of the angular supporting rod (1022) is hinged to the sliding block (1023);

or, the second slide rail of laying is erect to the side direction that is equipped with on the surface of base (1021), be equipped with on the second slide rail and follow the thickness direction of second slide rail runs through the first kidney slot of second slide rail, slider (1023) slidable is located first kidney slot is interior, the first end of angular bracing piece (1022) is passed through slider (1023) slidable is located on the second slide rail, the first end of angular bracing piece (1022) with slider (1023) pin joint.

3. The pipe joint clamp according to claim 1,

a third sliding groove is concavely arranged on the base (1021), a third sliding rail corresponding to the third sliding groove is arranged on the sliding block (1023), the third sliding rail is matched with the third sliding groove so that the sliding block (1023) can be slidably arranged relative to the base (1021), and a first end of the angular support rod (1022) is hinged with the sliding block (1023);

or, base (1021) are gone up to concavely be equipped with fourth spout (10211), be equipped with on the cell wall of fourth spout (10211) and follow the width direction of fourth spout (10211) runs through second kidney slot (10212) of fourth spout (10211), slider (1023) slidable is located in second kidney slot (10212), the first end of angular bracing piece (1022) is passed through slider (1023) slidable is located in fourth spout (10211), the first end of angular bracing piece (1022) with slider (1023) is articulated.

4. The pipe joint clamp according to claim 3,

the positioning mechanism (103) comprises a supporting bottom plate (1031) fixedly arranged on the mounting seat (101) and a positioning pin (1032) detachably arranged on the supporting bottom plate (1031), the supporting bottom plate (1031) is arranged opposite to the base (1021), and the positioning pin (1032) protrudes out of the surface of the supporting bottom plate (1031) to be matched with the second joint (202) to position the second joint (202).

5. The pipe joint clamp according to claim 4,

the positioning mechanism (103) further comprises a first side plate (1033) and a second side plate (1034) which are oppositely arranged at two sides of the supporting bottom plate (1031),

the pressing mechanism (104) is detachably arranged on the first side plate (1033) and the second side plate (1034) to press the special-shaped pipe joint positioned on the support bottom plate (1031) through the angular support rod (1022) and the positioning pin (1032).

6. The pipe joint clamp according to claim 5,

the pressing mechanism (104) comprises a pressing plate (1041), a pressing pin (1042) and a fastener (1043), wherein the pressing pin (1042) and the fastener (1043) are detachably arranged on the pressing plate (1041), the first side of the pressing plate (1041) is hinged to the first side plate (1033), the second side of the pressing plate (1041) is fixedly connected with the second side plate (1034) through the fastener (1043), and the pressing pin (1042) protrudes out of the surface of the pressing plate (1041) to abut against and press the pipe body (204) positioned in the positioning mechanism (103).

7. The pipe joint clamp according to claim 6,

the pressing plate (1041) is provided with a mounting hole for accommodating the pressing pin (1042) and a first positioning hole arranged perpendicular to the mounting hole, the mounting end of the pressing pin (1042) is provided with a second positioning hole, the pressing end of the pressing pin (1042) is provided with an elastic wear-resistant layer,

the pressing mechanism (104) further comprises a plug pin (1044), and the plug pin (1044) penetrates through the first positioning hole and the second positioning hole so that the pressing pin (1042) can be detachably connected to the pressing plate (1041).

8. The pipe joint clamp according to claim 7,

the pipe joint clamp further comprises a fastening reinforcement mechanism (105),

the fastening and reinforcing mechanism (105) comprises a first clamping screw rod (1051) and a second clamping screw rod (1052) which are oppositely arranged, the first clamping screw rod (1051) is in threaded fit with the first side plate (1033), and the second clamping screw rod (1052) is in threaded fit with the second side plate (1034) so as to clamp the pipe body (204) from two sides of the special-shaped pipe joint.

9. The pipe joint clamp according to claim 8,

the pipe joint clamp further comprises a backing plate (106) detachably arranged on the supporting base, and the positioning pin (1032) penetrates through the backing plate (106).

10. The pipe joint clamp according to claim 9,

a central hole is arranged on the mounting seat (101),

the pipe joint clamp further includes a bushing (107) axially disposed within the central bore.

Technical Field

The invention relates to the technical field of machining equipment, in particular to a pipe joint clamp.

Background

The existing accessory pipe joint of the aero-engine has a complex structural form and various size changes, and is difficult to find a proper clamp for clamping and positioning, so that the machining difficulty is high.

As shown in fig. 1, the special pipe joint includes a first joint, a second joint, a third joint to be processed, and a pipe body connecting the first joint, the second joint, and the third joint, and the first joint is deflected at an angle α degrees with respect to a central axis of the pipe body. Because the first joint, the second joint, the third joint and the pipe body of each special-shaped pipe joint are different in size and structure, and the first joint has different deflection angles relative to the pipe body, different clamps are needed for clamping and positioning, and an independent clamp is designed for clamping and positioning each special-shaped pipe joint during machining in the prior art, so that the clamp is low in universality, the machining period for machining the special-shaped pipe joint is long, and the machining cost is high.

Disclosure of Invention

The invention provides a pipe joint clamp, which aims to solve the technical problems that the existing pipe joint clamp is difficult to clamp and position a special-shaped pipe joint, so that the special-shaped pipe joint has high processing cost and long processing period.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a pipe joint clamp is used for clamping and positioning a special-shaped pipe joint, the special-shaped pipe joint comprises a first joint, a second joint, a third joint and a pipe body for connecting the first joint, the second joint and the third joint, the deflection angle of the first joint relative to the central axis of the pipe body is alpha degrees, the pipe joint clamp comprises a mounting seat, the special-shaped pipe joint positioning device comprises a fixed angle direction mechanism, a positioning mechanism and a pressing mechanism, wherein the fixed angle direction mechanism is used for adapting to the deflection angle of a first joint relative to a pipe body and positioning the first joint, the positioning mechanism is used for supporting the special-shaped pipe joint and positioning a second joint, the pressing mechanism is used for pressing the positioned special-shaped pipe joint onto the positioning mechanism, the fixed angle direction mechanism comprises a detachably connected base, an angle-shaped supporting rod and a sliding block, the base is fixedly arranged on a mounting seat, the sliding block is slidably arranged on the base along the height direction of the base, and the first end of the angle-shaped supporting; the second end of the angular support rod is suspended towards the outer side of the base, so that the angular support rod is adaptive to the deflection angle of the first joint, and the first joint is positioned through the second end of the angular support rod.

Furthermore, a first slide rail is arranged on the surface of the base and is arranged along the height direction of the base, a first slide groove corresponding to the first slide rail is arranged on the slide block, the first slide groove is matched with the first slide rail so that the slide block can be arranged in a sliding manner relative to the first slide rail, and the first end of the angular support rod is hinged with the slide block; or a second slide rail which is vertically arranged in the lateral direction is arranged on the surface of the base, a first kidney-shaped groove which penetrates through the second slide rail along the thickness direction of the second slide rail is arranged on the second slide rail, the sliding block is slidably arranged in the first kidney-shaped groove, the first end of the angular support rod is slidably arranged on the second slide rail through the sliding block, and the first end of the angular support rod is pivoted with the sliding block.

Furthermore, a third sliding groove is concavely arranged on the base, a third sliding rail corresponding to the third sliding groove is arranged on the sliding block, the third sliding rail is matched with the third sliding groove so that the sliding block can be arranged in a sliding manner relative to the base, and the first end of the angular support rod is hinged with the sliding block; or, a fourth sliding groove is concavely arranged on the base, a second kidney-shaped groove which penetrates through the fourth sliding groove along the width direction of the fourth sliding groove is arranged on the groove wall of the fourth sliding groove, the sliding block is slidably arranged in the second kidney-shaped groove, the first end of the angular support rod is slidably arranged in the fourth sliding groove through the sliding block, and the first end of the angular support rod is hinged to the sliding block.

Furthermore, the positioning mechanism comprises a supporting bottom plate fixedly arranged on the mounting seat and a positioning pin detachably arranged on the supporting bottom plate, the supporting bottom plate and the base are oppositely arranged, and the positioning pin protrudes out of the surface of the supporting bottom plate to be matched with the second joint to position the second joint.

Furthermore, the positioning mechanism further comprises a first side plate and a second side plate which are oppositely arranged on two sides of the supporting bottom plate, and the pressing mechanism is detachably arranged on the first side plate and the second side plate so as to press the special-shaped pipe joint which is positioned on the supporting bottom plate through the angular supporting rod and the positioning pin.

Furthermore, the pressing mechanism comprises a pressing plate, a pressing pin and a fastener, wherein the pressing pin and the fastener are detachably arranged on the pressing plate, the first side of the pressing plate is hinged to the first side plate, the second side of the pressing plate is fixedly connected with the second side plate through the fastener, and the pressing pin protrudes out of the surface of the pressing plate and is arranged to abut against and press the pipe body positioned in the positioning mechanism.

Furthermore, the pressing plate is provided with a mounting hole for accommodating the pressing pin and a first positioning hole which is perpendicular to the mounting hole and is arranged, the mounting end of the pressing pin is provided with a second positioning hole, the pressing end of the pressing pin is provided with an elastic wear-resistant layer, and the pressing mechanism further comprises a bolt which penetrates through the first positioning hole and the second positioning hole so that the pressing pin can be detachably connected to the pressing plate.

Further, the pipe joint clamp further comprises a fastening reinforcing mechanism, the fastening reinforcing mechanism comprises a first clamping screw and a second clamping screw which are oppositely arranged, the first clamping screw is in threaded fit with the first side plate, and the second clamping screw is in threaded fit with the second side plate so as to clamp the pipe body from two sides of the special-shaped pipe joint.

Further, the pipe joint clamp further comprises a base plate detachably arranged on the supporting base, and the positioning pin penetrates through the base plate.

Furthermore, a central hole is arranged on the mounting seat,

the pipe joint clamp further includes a bushing axially disposed within the central bore.

The invention has the following beneficial effects:

the pipe joint clamp comprises an installation seat, an angular direction fixing mechanism, a positioning mechanism and a pressing mechanism, wherein the angular direction fixing mechanism comprises a base, an angular support rod and a sliding block, the base is fixedly arranged on the installation seat, the sliding block is slidably arranged on the base along the height direction of the base, and the first end of the angular support rod is rotatably arranged on the sliding block; the second end of the angular support rod is suspended towards the outer side of the base, so that the angular support rod is adaptive to the deflection angle of the first joint and positions the first joint through the second end of the angular support rod; through the relative base detachably setting of angular bracing piece and slider, be convenient for change the angular bracing piece that the size matches in order to carry out the clamping location according to the abnormal shape coupling of equidimension not, improved anchor clamps's commonality, reduced the abnormal shape coupling processing cost, reduced processing cycle.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a contour joint;

fig. 2 is a schematic structural view of a pipe joint clamp according to a preferred embodiment of the present invention;

fig. 3 is a left side view of a pipe joint clamp of a preferred embodiment of the present invention;

FIG. 4 is a first view of the base of the preferred embodiment of the present invention;

FIG. 5 is a second view of the base of the preferred embodiment of the present invention;

FIG. 6 is a third view of the base of the preferred embodiment of the present invention;

fig. 7 is a front view of the positioning mechanism of the preferred embodiment of the present invention.

Illustration of the drawings:

100. a pipe joint clamp; 101. a mounting seat; 102. a fixed angular direction mechanism; 1021. a base; 10211. a fourth chute; 10212. a second kidney-shaped slot; 1022. an angular support bar; 1023. a slider; 103. a positioning mechanism; 1031. a support base plate; 1032. positioning pins; 1033. a first side plate; 1034. a second side plate; 104. a hold-down mechanism; 1041. pressing a plate; 1042. a hold down pin; 1043. a fastener; 1044. a bolt; 105. a fastening reinforcement mechanism; 1051. a first clamping screw; 1052. a second clamping screw; 106. a base plate; 107. a bushing; 200. a special-shaped pipe joint; 201. a first joint; 202. a second joint; 203. a third joint; 204. a tube body.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

FIG. 1 is a schematic structural view of a contour joint; fig. 2 is a schematic structural view of a pipe joint clamp according to a preferred embodiment of the present invention; fig. 3 is a left side view of a pipe joint clamp of a preferred embodiment of the present invention; FIG. 4 is a first view of the base of the preferred embodiment of the present invention; FIG. 5 is a second view of the base of the preferred embodiment of the present invention; FIG. 6 is a third view of the base of the preferred embodiment of the present invention; fig. 7 is a front view of the positioning mechanism of the preferred embodiment of the present invention.

As shown in fig. 2 and 3, the pipe joint fixture 100 of the present embodiment is used for clamping and positioning a special pipe joint 200, the special pipe joint includes a first joint 201, a second joint 202, a third joint 203, and a pipe body 204 connecting the first joint 201, the second joint 202, and the third joint 203, a deflection angle of the first joint 201 with respect to a central axis of the pipe body 204 is α degrees, the pipe joint fixture includes a mounting seat 101, a fixed angle mechanism 102 for accommodating the deflection angle of the first joint 201 with respect to the pipe body 204 and positioning the first joint 201, a positioning mechanism 103 for supporting the special pipe joint and positioning the second joint 202, and a pressing mechanism 104 for pressing the positioned special pipe joint onto the positioning mechanism 103, the fixed angle mechanism 102 includes a detachably connected base 1021, an angular support rod 1022, and a slider 1023, the base 1021 is fixedly disposed on the mounting seat 101, the sliding block 1023 is slidably arranged on the base 1021 along the height direction of the base 1021, and the first end of the angular support rod 1022 is rotatably arranged on the sliding block 1023; a second end of the angular support bar 1022 is suspended toward the outer side of the base 1021 to adapt the angular support bar 1022 to the deflection angle of the first joint 201, and the first joint 201 is positioned by the second end of the angular support bar 1022.

The pipe joint clamp 100 comprises an installation seat 101, a fixed angle direction mechanism 102, a positioning mechanism 103 and a pressing mechanism 104, wherein the fixed angle direction mechanism 102 comprises a base 1021, an angle supporting rod 1022 and a sliding block 1023, the base 1021 is fixedly arranged on the installation seat 101, the sliding block 1023 is slidably arranged on the base 1021 along the height direction of the base 1021, and the first end of the angle supporting rod 1022 is rotatably arranged on the sliding block 1023; the second end of the angular support bar 1022 is suspended towards the outer side of the base 1021, so that the angular support bar 1022 adapts to the deflection angle of the first joint 201 and positions the first joint 201 through the second end of the angular support bar 1022, and as the first end of the angular support bar 1022 is rotatably and slidably arranged, the relative position and the rotation angle of the angular support bar 1022 can be adjusted according to the shape structure of the special-shaped pipe joint 200, so as to adapt to the deflection angle of the first joint 201 relative to the pipe body 204 and position the first joint 201, thereby facilitating clamping of the special-shaped pipe joint 200; through angular bracing piece 1022 and the relative base 1021 detachably setting of slider 1023, be convenient for change the angular bracing piece 1022 that the size matches with the clamping location according to the heterotypic coupling of not unidimensional, improved the commonality of anchor clamps, reduced the heterotypic coupling 200 processing cost, reduced processing cycle.

It can be understood that the contact fit relationship between each joint of the profile pipe joint 200 and the pipe body 204 may be a plug fit, a snap fit, a socket fit, a threaded fit, or may be formed by integrally forming each joint of the profile pipe joint 200 and the pipe body 204. Specifically, the second joint 202 is provided on the lower side of the tube body 204, and the third joint 203 is provided on the tube body 204 in the axial direction of the tube body 204 in the direction perpendicular to the central axis of the tube body 204.

It can be understood that, in different profile pipe joints 200, the deflection angle α of the first joint 201 relative to the central axis of the pipe body 204 may be the same or different, and the second end of the angular support rod 1022 may be an optical axis end, which is inserted into the first joint 201 along the opening of the first joint 201, and then the position and rotation angle of the first end of the angular support rod 1022 relative to the base 1021 are adaptively adjusted according to the deflection angle of the first joint 201, so as to position the first joint 201; the second end of the angular support bar 1022 may be a sleeve end, the sleeve end is sleeved on the first joint 201 along the outer wall surface of the first joint 201, and then the position and the rotation angle of the first end of the angular support bar 1022 relative to the base 1021 are adaptively adjusted according to the rotation angle of the first joint 201, so as to position the first joint 201; when the aperture of the first pipe joint is changed, the sliding block 1023 can be removed to replace the angular support rods 1022 with different sizes, so that the universality of the pipe joint clamp 100 is improved.

Alternatively, the first end of the base 1021 is fixed on the surface of the mount 101 by a screw, a pin, or the like; the pressing mechanism 104 may be a pressing plate 1041, a clip, or the like provided on the positioning mechanism 103, as long as the pressing mechanism 104 is used to press the positioned special-shaped pipe joint 200 against the positioning mechanism 103, and the slider 1023 is slidably disposed at the second end of the base 1021 in the height direction of the base 1021.

Further, base 1021 is equipped with first slide rail on the surface, and first slide rail is laid along base 1021's direction of height, is equipped with the first spout that corresponds with first slide rail on the slider 1023, and first spout and the cooperation of first slide rail make slider 1023 set up relatively first slide rail slidable, and the first end of angular bracing piece 1022 is articulated with slider 1023. Optionally, the second end of base 1021 outwards extends and has first slide rail, and first slide rail is forked tail slide rail or T type slide rail, and first spout is forked tail spout or the T type spout that corresponds, is favorable to preventing that slider 1023 from swinging on base 1021, improves the machining precision that the special pipe joint 200. The sliding block 1023 is arranged in a sliding manner by matching the first sliding groove with the first sliding rail, so that the angular support rod 1022 is driven by the sliding block 1023 to slide to adjust different heights of the angular support rod 1022; meanwhile, the first end of the angular support rod 1022 is hinged to the sliding block 1023, so that the first end of the angular support rod 1022 can be rotatably arranged, and the angular support rod 1022 can be adjusted to different angles, so that the angular support rod 1022 is enabled to adapt to the deflection angle of the first joint 201 and position the first joint 201 through the second end of the angular support rod 1022.

Further, the base 1021 is provided with a second slide rail arranged vertically in the lateral direction on the surface, the second slide rail is provided with a first kidney-shaped groove penetrating through the second slide rail along the thickness direction of the second slide rail, the slide block 1023 is slidably arranged in the first kidney-shaped groove, the first end of the angular support rod 1022 is slidably arranged on the second slide rail through the slide block 1023, and the first end of the angular support rod 1022 is pivotally connected with the slide block 1023. Optionally, a second slide rail extends outwardly from a second end of the base 1021.

Further, a third sliding groove is concavely arranged on the base 1021, a third sliding rail corresponding to the third sliding groove is arranged on the sliding block 1023, the third sliding rail is matched with the third sliding groove to enable the sliding block 1023 to be arranged in a sliding mode relative to the base 1021, and the first end of the angular support rod 1022 is hinged to the sliding block 1023.

Further, referring to fig. 4, 5 and 6, a fourth sliding slot 10211 is concavely disposed on the base 1021, a second kidney-shaped slot 10212 penetrating the fourth sliding slot 10211 along the width direction of the fourth sliding slot 10211 is disposed on a groove wall of the fourth sliding slot 10211, the sliding block 1023 is slidably disposed in the second kidney-shaped slot 10212, a first end of the angular support rod 1022 is slidably disposed in the fourth sliding slot 10211 through the sliding block 1023, and the first end of the angular support rod 1022 is hinged to the sliding block 1023. Optionally, a fourth sliding groove 10211 is concavely provided at the second end of the base 1021, in this embodiment, the sliding block 1023 is a connecting shaft with an external thread, the first end of the angular support rod 1022 is provided in the fourth sliding groove 10211 with a gap, and a threaded section of the connecting shaft passes through the second kidney-shaped groove 10212 and the angular support block in the first sliding groove, and is pulled by a nut to prevent the connecting shaft and the angular support block from falling off. The connecting shaft is slidably arranged in the second kidney-shaped groove 10212, so that the first end of the angular support rod 1022 is driven to be slidably arranged in the fourth chute 10211, meanwhile, the first end of the angular support rod 1022 is rotatably arranged relative to the connecting shaft, so that the angular support rod 1022 is enabled to adapt to the deflection angle of the first joint 201, the first joint 201 is positioned through the second end of the angular support rod 1022, and the special-shaped pipe joint 200 is convenient to clamp; the angular support bar 1022 is detachably arranged relative to the base 1021, so that the angular support bar 1022 which is matched with the aperture of the first joint 201 can be replaced after the limitation of the connecting shaft is removed, and the universality of the pipe joint clamp 100 is improved.

Preferably, the base 1021 is T-shaped, the large end of the T-shaped base 1021 is fixed on the mounting base 101, and the small end of the T-shaped base 1021 is provided with the fourth chute 10211, so that the bearing capacity of the base 1021 is improved, and the base 1021 is prevented from swinging to interfere with the sliding of the angular support bar 1022.

Further, the positioning mechanism 103 includes a supporting base plate 1031 fixedly disposed on the mounting seat 101 and a positioning pin 1032 detachably disposed on the supporting base plate 1031, the supporting base plate 1031 is disposed opposite to the base 1021, and the positioning pin 1032 protrudes from a surface of the supporting base plate 1031 to cooperate with the second connector 202 to position the second connector 202. It is understood that the support base plate 1031 may be fixed to the mounting seat 101 by screws, pins, etc., and the positioning pins 1032 are inserted into the holes of the second joints 202 to position the second joints 202, and the positioning pins 1032 may be detachably connected to the mounting base plate by bolt fastening. Specifically, the support base plate 1031 is provided with a mounting hole, a positioning end of the positioning pin 1032 passes through the mounting hole and is in clearance fit with the mounting hole, so that the positioning end of the positioning pin 1032 protrudes out of the upper surface of the support base plate 1031 to position the second joint 202, and a threaded end of the positioning pin 1032 is in threaded connection with the support base plate 1031 and is fixed by a fastening nut. The positioning pins 1032 are detachably provided on the support base plate 1031, so that the corresponding positioning pins 1032 can be replaced when the sizes of the holes of the second joint 202 are different, and the universality of the pipe joint clamp 100 is improved.

Further, the positioning mechanism 103 further includes a first side plate 1033 and a second side plate 1034 oppositely disposed on both sides of the supporting bottom plate 1031, and the pressing mechanism 104 is detachably disposed on the first side plate 1033 and the second side plate 1034 to press the special pipe joints positioned on the supporting bottom plate 1031 by the angular support bars 1022 and the positioning pins 1032. By arranging the first side plate 1033 and the second side plate 1034, the special-shaped pipe joint is arranged in a containing cavity formed by enclosing the first side plate 1033, the second side plate 1034 and the supporting bottom plate 1031, so that the pressing mechanism is detachably arranged opposite to the supporting bottom plate 1031 to press and fix the special-shaped pipe joint 200, and the quick assembly of the special-shaped pipe joint 200 is facilitated.

Preferably, referring to fig. 7, in order to improve the stability of the positioning mechanism 103 and prevent the positioning mechanism 103 from swinging on the mounting seat 101, the supporting bottom plate 1031, the first side plate 1033 and the second side plate 1034 are integrally formed to form a U-shaped supporting plate, and the supporting bottom plate 1031, the first side plate 1033 and the second side plate 1034 are all fixedly connected with the mounting seat 101.

Further, the pressing mechanism 104 includes a pressing plate 1041, a pressing pin 1042 detachably disposed on the pressing plate 1041, and a fastener 1043, a first side of the pressing plate 1041 is hinged to the first side plate 1033, a second side of the pressing plate 1041 is fixedly connected to the second side plate 1034 by the fastener 1043, and the pressing pin 1042 protrudes from a surface of the pressing plate 1041 and is disposed to abut against and press the pipe body 204 located in the positioning mechanism 103. By arranging that the first side of the pressing plate 1041 is hinged to the first side plate 1033, and the second side of the pressing plate 1041 is fixedly connected to the second side plate 1034 through the fastener 1043, before the special-shaped pipe joint 200 is clamped, the pressing plate 1041 can be rotated with the first side as a fulcrum, so that interference when the special-shaped pipe joint 200 is positioned is avoided, and after the special-shaped pipe joint 200 is positioned, the pressing plate 1041 is rotated and the second side of the pressing plate 1041 is fixedly connected to the second side plate 1034, which is beneficial to preventing the pressing plate 1041 from being lost; the pressing pin 1042 is detachably arranged on the pressing plate 1041, so that the pressing pin 1042 can be assembled according to the size of the pipe body 204 of the special pipe joint 200, and the universality of the pipe joint clamp 100 is improved.

Alternatively, the fasteners 1043 may be bolts, screws, and clips, and correspondingly, screw holes or snaps are provided on the upper end surface of the second side plate 1034.

Further, the pressing plate 1041 is provided with a mounting hole for accommodating the pressing pin 1042 and a first positioning hole arranged perpendicular to the mounting hole, the mounting end of the pressing pin 1042 is provided with a second positioning hole, the pressing end of the pressing pin 1042 is provided with an elastic wear-resistant layer or a rubber pad, the pressing mechanism 104 further includes a plug 1044, and the plug 1044 passes through the first positioning hole and the second positioning hole to enable the pressing pin 1042 to be detachably connected to the pressing plate 1041.

Further, the pipe joint clamp 100 further includes a fastening reinforcement mechanism 105, and the fastening reinforcement mechanism 105 includes a first clamping screw 1051 and a second clamping screw 1052 which are oppositely disposed, the first clamping screw 1051 is screw-fitted with the first side plate 1033, and the second clamping screw 1052 is screw-fitted with the second side plate 1034, so as to clamp the pipe body 204 from both sides of the special pipe joint 200. The fastening reinforcing mechanism 105 is arranged to assist in clamping the special-shaped pipe joint 200 from two sides, so that swinging of the special-shaped pipe joint is prevented, and machining precision is improved.

Further, the pipe joint jig 100 further includes a backing plate 106 detachably provided on the support base, and a positioning pin 1032 is provided through the backing plate 106. By providing the shim plate 106 detachably on the support base, the pipe joint can be arranged coaxially with the mount 101, and different-sized shim plates 106 can be fitted according to different-sized shaped pipe joints 200 to improve the versatility of the pipe joint jig 100.

Further, in order to ensure that the machining center of the part is concentric with the rotation center of the machine tool, the mounting seat 101 is provided with a center hole, and the pipe joint clamp 100 further includes a bushing 107 axially disposed in the center hole.

In use, the pipe joint clamp 100 of the present invention, by observing and measuring, assembles the angular support rod 1022 matching the size of the hole of the first joint 201 of the shaped pipe joint 200, so that the angular support rod 1022 is movably provided on the base 1021 through the slider 1023 to match the deflection angle of the first joint 201 of the shaped pipe joint 200, thereby positioning the first joint 201; fitting a positioning pin 1032 matching the size of the hole of the second joint 202 of the contour joint 200 to position the second joint 202; and a proper gasket is selected to be arranged on the mounting base, so that the third joint 203 of the special-shaped pipe joint 200 and the mounting base 101 are coaxially arranged; a hold-down pin 1042 matching the shape and size of the tube body 204 of the shaped tube fitting is fitted to fix the positioned shaped tube fitting 200. Specifically, first, the second end of the angular support rod 1022 is inserted into the first joint 201, and since the first end of the angular support rod 1022 is slidably and rotatably disposed with respect to the base 1021, the second joint 202 of the shaped pipe joint 200 is aligned with the positioning pin 1032 and placed on the gasket, the first joint 201 and the second joint 202 of the complete shaped pipe joint 200 are simultaneously positioned, then, the pressing plate 1041 is rotated, the second side of the pressing plate 1041 is fixedly connected with the second side plate 1034 through the fastener 1043, the pressing pin 1042 on the pressing plate 1041 abuts against the pipe body 204 of the shaped pipe joint 200, and finally, the first clamping bolt and the second clamping bolt are respectively rotated to clamp the pipe body 204, thereby completing the clamping and positioning of the shaped pipe joint 200.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.