Positioning jig

Abstract

A positioning jig comprises a bottom plate, one end of the bottom plate is provided with an end plate, the other end of the bottom plate is provided with a pair of rotating protruding plates, the upper ends of the rotating protruding plates are rotationally provided with concave frames, the upper ends of the concave frames are in threaded connection with lead screws, the upper ends of the lead screws are provided with rotating handles, and the lower ends of the lead screws are provided with pressing discs. The rotating protruding plates play a role in limiting the two sides of the rectangular pipe, the pressing disc rotates to act on the rectangular pipe, and therefore the purpose of positioning the rectangular pipe is achieved. A pair of convex plates are installed on the bottom plate, inner jackscrew rods are connected to the convex plates in a threaded mode, end caps are arranged at the outer side ends of the inner jackscrew rods, concave clamping pieces are rotationally arranged at the inner side ends of the inner jackscrew rods, clamping screw rods are connected to one sides of the concave clamping pieces in a threaded mode, and rotating heads are arranged at the outer side ends of the clamping screw rods. And therefore, the welding precision of the convex shell is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a positioning jig. Background Art

[0002] As Figure 1 shown is a structure of a temperature detection probe housing, which includes a rectangular housing 12 with one end open. A plurality of probes are arranged inside the rectangular housing 12. One side of the lower end of the rectangular housing 12 is provided with a rectangular tube 1. Mounting plates 11 are welded to both sides of the rectangular tube 1. U-shaped grooves are opened at both ends of the mounting plates 11. In addition, convex shells 10 are respectively provided on both sides of the rectangular tube 1. Connecting tubes 14 communicate with the convex shells 10. An extension tube communicates with the outer side end of the rectangular tube 1. The rectangular tube 1, the connecting tubes 14 and the extension tube are all used for the penetration and protection of connecting wires. The mounting plates 11 are used for the installation of the temperature detection probe housing. Among them, the extension tube, the rectangular tube 1, the connecting tubes 14, the mounting plates 11, etc. are all fixed by welding. And how to ensure the welding accuracy becomes the key to improving the product quality during welding. At present, during welding, the welding position is calibrated at the welding part first, and then the welding operation is carried out. However, this welding method has a low welding accuracy and affects the welding efficiency at the same time. Summary of the Utility Model

[0003] The utility model provides a positioning jig to solve the above-mentioned deficiencies of the prior art, solve the problem of welding accuracy, solve the problem of low welding efficiency, and has strong practicability.

[0004] In order to achieve the purpose of the utility model, the following technology is proposed:

[0005] A positioning jig includes a bottom plate. An end plate is installed at one end of the bottom plate. A pair of rotating convex plates are installed at the other end of the bottom plate. A concave frame is rotatably provided at the upper end of the rotating convex plate. A lead screw is screwed at the upper end of the concave frame. A rotating handle is provided at the upper end of the lead screw. A pressing plate is provided at the lower end of the lead screw. The provided rotating convex plates play a role in limiting both sides of the rectangular tube. The pressing plate acts on the rectangular tube by rotation, so as to achieve the purpose of positioning the rectangular tube. A pair of convex plates are installed on the bottom plate. An inner top lead screw is screwed on the convex plates. An end cap is provided at the outer side end of the inner top lead screw. A concave clamping member is rotatably provided at the inner side end of the inner top lead screw. A clamping lead screw is screwed on one side of the concave clamping member. A rotating head is provided at the outer side end of the clamping lead screw. The provided concave clamping member can position the convex shell, thereby ensuring the accuracy during the welding of the convex shell.

[0006] Furthermore, two pairs of positioning rods are provided on the bottom plate. The positioning rods are inserted into the U-shaped grooves to position the mounting plates.

[0007] Further, a U-shaped groove is formed on the other side of the concave fastener. When limiting the convex shell, the connecting pipe is passed through the U-shaped groove to further improve the positioning effect on the convex shell.

[0008] Further, two pairs of kidney-shaped holes are formed on the bottom plate. Movable through rods are movably arranged in the kidney-shaped holes. The lower ends of the movable through rods on the same side are provided with movable lower plates. Inner top convex plates are arranged on the movable lower plates. An inner top rotating plate is rotatably arranged on the bottom plate. A acting rod is arranged at the outer end of the inner top rotating plate. The upper ends of the movable through rods extend out of the bottom plate. A pair of mounting end plates are arranged on the bottom plate. A pair of guide rods are arranged between the mounting end plates. A movable plate is movably arranged on the guide rods. A pair of springs are arranged between the movable plate and the inner mounting end plate. The springs are sleeved on the guide rods. A movable cross plate is arranged at the lower end of the movable plate. A kidney-shaped cross hole is formed in the movable cross plate. The acting rod passes through the kidney-shaped cross hole. The movable plate is provided with a push rod extending outwards. The push rod passes through the outer mounting end plate. A top push rotating plate is rotatably arranged at the other end of the bottom plate. The inner end of the top push rotating plate acts on the outer end of the push rod. Through the arranged movable through rods, they can move inwards under the action of the top push rotating plate, so that the movable through rods act on the outer wall of the rectangular shell, thereby improving the positioning effect on the rectangular shell.

[0009] Further, a top push cylinder is arranged at the inner end of the top push rotating plate, and the top push cylinder facilitates the positioning of the rectangular shell by the movable through rods.

[0010] The advantages of the above technical solutions are as follows:

[0011] The utility model can position components such as the rectangular shell and the rectangular pipe in the temperature detection probe housing, thereby improving the welding precision and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings.

[0013] Figure 1 The three-dimensional structure of one of the embodiments is shown Figure 1 .

[0014] Figure 2 The three-dimensional structure of one of the embodiments is shown Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] As Figures 1 to 2 shown, a positioning fixture includes a bottom plate 1, and an end plate 6 is installed on one end of the bottom plate 1.

[0016] At the other end of the bottom plate 1, a pair of rotating convex plates 4 are installed. At the upper end of the rotating convex plate 4, a concave-shaped frame 40 is rotatably provided. At the upper end of the concave-shaped frame 40, a lead screw 41 is screwed. At the upper end of the lead screw 41, a rotating handle 42 is provided, and at the lower end of the lead screw 41, a pressure plate is provided.

[0017] On the bottom plate 1, a pair of convex plates 3 are installed. On the convex plate 3, an inner top lead screw 30 is screwed. At the outer end of the inner top lead screw 30, an end cap is provided. At the inner end of the inner top lead screw 30, a concave-shaped clamping member 31 is rotatably provided. On one side of the concave-shaped clamping member 31, a clamping lead screw 32 is screwed. At the outer end of the clamping lead screw 32, a rotating head is provided. On the other side of the concave-shaped clamping member 31, a U-shaped groove is provided.

[0018] On the bottom plate 1, two pairs of positioning rods 21 are provided.

[0019] On the bottom plate 1, two pairs of waist-shaped holes 20 are provided. In the waist-shaped holes 20, movable through rods 5 are movably provided. At the lower end of the movable through rods 5 on the same side, movable lower plates 50 are provided. On the movable lower plates 50, inner top convex plates 51 are provided. On the bottom plate 1, an inner top rotating plate 52 is rotatably provided. At the outer end of the inner top rotating plate 52, a acting rod 53 is provided. The upper end of the movable through rod 5 extends out of the bottom plate 1. On the bottom plate 1, a pair of mounting end plates 54 are provided. Between the mounting end plates 54, a pair of guide rods 55 are provided. On the guide rods 55, a movable plate 57 is movably provided. Between the movable plate 57 and the inner mounting end plate 54, a pair of springs 56 are provided. The springs 56 are sleeved on the guide rods 55. At the lower end of the movable plate 57, a movable cross plate 58 is provided. On the movable cross plate 58, a waist-shaped cross hole 59 is provided. The acting rod 53 passes through the waist-shaped cross hole 59. The movable plate 57 extends outwardly with a push rod 60. The push rod 60 passes through the outer mounting end plate 54. At the other end of the bottom plate 1, a top push rotating plate 61 is rotatably provided. The inner end of the top push rotating plate 61 acts on the outer end of the push rod 60. At the inner end of the top push rotating plate 61, a top push cylinder is provided.

[0020] During the operation of this embodiment, the operator places the rectangular shell 12 on the bottom plate 1 and limits one end of the rectangular shell 12 through the end plate 6.

[0021] Then the operator rotates the top push rotating plate 61. When the top push rotating plate 61 rotates, its inner end will act on the outer end of the push rod 60, so that the push rod 60 drives the movable cross plate 58 to move inward. At the same time, the spring 56 deforms. When the movable cross plate 58 moves inward, the waist-shaped cross hole 59 on it will act on the acting rod 53, so that the inner top rotating plate 52 rotates. When the inner top rotating plate 52 rotates, its inner end will act on the inner top convex plate 51, thereby causing the movable lower plate 50 to move inward, and causing the movable lower plate 50 to drive the movable through rod 5 to move inward, and finally completing the positioning of the rectangular shell 12.

[0022] Then the operator places the rectangular tube 1 at one end of the rectangular housing 12. After placement, the operator rotates the concave frame 40 upward, and by rotating the lead screw 41, the pressing plate acts on the rectangular tube 1, thereby completing the positioning of the rectangular tube 1.

[0023] Then the operator performs a welding operation between the rectangular tube 1 and the rectangular housing 12.

[0024] Next, the operator places the mounting plate 11 on the bottom plate 2, positions it through the positioning rod 21, and then performs spot welding on the mounting plate 11.

[0025] Finally, the operator inserts the convex shell 10 into the concave clamping member 31, and then positions the convex shell 10 through the clamping lead screw 32. After positioning, the convex shell 10 is adjusted by the inner top lead screw 30 so that the convex shell 10 is tightly pressed against the rectangular tube 1, and then spot welding of the convex shell 10 is performed.

[0026] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A positioning jig, characterized in that, It includes a bottom plate (1), and an end plate (6) is installed at one end of the bottom plate (1); At the other end of the bottom plate (1), a pair of rotating convex plates (4) are installed. At the upper end of the rotating convex plate (4), a concave frame (40) is rotatably provided. At the upper end of the concave frame (40), a lead screw (41) is screwed. At the upper end of the lead screw (41), a rotating handle (42) is provided, and at the lower end of the lead screw (41), a pressing disc is provided; On the bottom plate (1), a pair of convex plates (3) are installed. On the convex plate (3), an inner top lead screw (30) is screwed. At the outer end of the inner top lead screw (30), an end cap is provided. At the inner end of the inner top lead screw (30), a concave clamping member (31) is rotatably provided. On one side of the concave clamping member (31), a clamping lead screw (32) is screwed. At the outer end of the clamping lead screw (32), a rotating head is provided.

2. The positioning jig according to claim 1, wherein On the bottom plate (1), two pairs of positioning rods (21) are provided.

3. The positioning jig according to claim 1, characterized in that, On the other side of the concave clamping member (31), a U-shaped groove is opened.

4. The positioning jig according to claim 1, wherein On the bottom plate (1), two pairs of kidney-shaped holes (20) are opened. In the kidney-shaped holes (20), movable through rods (5) are movably provided. At the lower end of the movable through rods (5) on the same side, movable lower plates (50) are provided. On the movable lower plates (50), inner top convex plates (51) are provided. On the bottom plate (1), an inner top rotating plate (52) is rotatably provided. At the outer end of the inner top rotating plate (52), an acting rod (53) is provided. The upper end of the movable through rod (5) extends out of the bottom plate (1). On the bottom plate (1), a pair of mounting end plates (54) are provided. Between the mounting end plates (54), a pair of guide rods (55) are provided. On the guide rods (55), a movable plate ( 5. The positioning jig according to claim 1, wherein, ​

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