An accurate positioning clamp for bending processing of an electric heating tube

Abstract

The utility model discloses an electric heating tube elbow pipe machining precision positioning fixture relates to electric heating tube machining technical field, solved the majority fixture for fixed structure, when facing different diameter, different bending angle product, need frequently change fixture, lead to the problem of low production efficiency, equipment cost increase. A kind of electric heating tube elbow pipe machining precision positioning fixture, comprising: base;The base adopts rectangular plate structure;The round recess in the top of base is provided with six groups of cylindrical structure's connecting block;The top of connecting block is fixedly provided with the bottom plate of round plate shape structure;The top of two groups of bottom plate is fixedly provided with the top rod of cylindrical structure in middle;The bottom outside of top rod is annular array rotationally connected and is provided with the first connecting rod of five groups of U-shaped rod structure;The outside end of first connecting rod is rotationally connected and is provided with the support plate of arc plate structure;Significantly improve machining precision, reduce the scrap rate caused by positioning deviation.

Description

Technical Field

[0001] This utility model belongs to the field of electric heating tube processing technology, and more specifically, it relates to a precision positioning fixture for electric heating tube bending processing. Background Technology

[0002] In modern industrial production, electric heating tubes, as core heating elements, are widely used in various industries such as home appliance manufacturing, automotive, aerospace, and medical devices. With industrial upgrading and the increasing sophistication of market demands, higher requirements are being placed on the structural design, processing precision, and quality stability of electric heating tubes. Among these, tube bending is a crucial process in electric heating tube manufacturing, and its processing precision directly affects the installation compatibility, heating uniformity, and overall service life of the heating tube.

[0003] Current machining fixtures still have the following shortcomings: Most fixtures are fixed structures and can only accommodate heating tubes of a single specification or with a specific bending radius. When dealing with products of different diameters and bending angles, fixtures need to be changed frequently, resulting in low production efficiency and increased equipment costs, which has certain limitations. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a precision positioning fixture for electric heating tube bending processing. This solves the problem that most fixtures mentioned in the background art are fixed structures, which can only adapt to electric heating tubes of a single specification or a specific bending radius. When dealing with products of different diameters and bending angles, frequent fixture changes are required, resulting in low production efficiency, increased equipment costs, and certain limitations.

[0005] The purpose and effect of this utility model, a precision positioning fixture for electric heating tube bending processing, are achieved by the following specific technical means: A precision positioning fixture for bending electric heating tubes includes: a base; the base adopts a rectangular plate structure, and the top of the base has a circular groove structure in a rectangular array, and the bottom of the circular groove on the top of the base has a through-hole structure; six sets of cylindrical connecting blocks are arranged in the circular groove on the top of the base, and the bottom of the connecting blocks is fixedly connected to a screw; a circular plate structure is fixedly arranged on the top of the connecting blocks; a cylindrical top rod is fixedly arranged in the middle of the top of two sets of bottom plates, and the middle outer side of the top rod has a threaded groove structure; five sets of U-shaped rod structures are rotatably connected to the bottom outer side of the top rod in a ring array; an arc-shaped plate structure support plate is rotatably connected to the outer end of the first connecting rod.

[0006] Furthermore, an L-shaped rod is fixedly installed on the top of each of the two sets of base plates; a cylinder is fixedly installed on the bottom side of one side of the fixed rod; and a circular plate-shaped pressure plate is connected to the bottom of the cylinder for transmission.

[0007] Furthermore, a bolt is rotatably provided on the outer side of the top rod through a threaded engagement, and an annular groove structure is provided on the outer side of the bolt; an annular collar structure is fitted inside the annular groove on the outer side of the bolt; five sets of second connecting rods are rotatably arranged in an annular array on the outer side of the collar, and the outer ends of the second connecting rods are rotatably connected to the inner side of the support plate.

[0008] Furthermore, a cylindrical sliding rod is fixedly installed on one side of the top of each of the two sets of base plates; a circular ring fixing ring is slidably installed on the outside of the sliding rod, and four sets of through rectangular slot structures are opened in a circular array on the outside of the fixing ring, a circular groove structure is opened on one side of the fixing ring, and a through screw hole structure is opened on one side of the fixing ring.

[0009] Furthermore, a side rod is rotatably mounted on one side of the top of the base plate, and the side rod is rotatably connected to the screw hole on one side of the fixing ring through a threaded engagement; a circular ring control ring is rotatably mounted in the circular groove on one side of the fixing ring, and a threaded groove structure is opened on one side of the control ring; four sets of rectangular block sliders are slidably mounted in a circular array on the outer side of the fixing ring, and a threaded groove structure is opened on one side of the slider, and the slider is connected to the control ring through a threaded engagement; an arc-shaped plate clamp is fixedly mounted on the inner end of the slider.

[0010] Compared with the prior art, the present invention has the following beneficial effects: Precise positioning is achieved through a multi-dimensional clamping structure: the arc-shaped support plate at the bottom of the top rod fits the curved surface of the heating tube to provide lateral support, the clamping plate on the fixing ring surrounds both ends of the heating tube from all sides, and the top pressure plate is fixed by the cylinder. The multi-directional synergistic effect can effectively limit the axial and radial displacement of the heating tube during the bending process, significantly improve the processing accuracy, and reduce the scrap rate caused by positioning deviation.

[0011] The connecting block and the base are detachably connected, allowing users to freely adjust the installation position of the connecting block on the base according to parameters such as the length and bending position of the heating tube. This allows for flexible arrangement of key components such as the top rod and fixing ring. The fixture's structural design fully considers the processing requirements of heating tubes of different specifications, exhibiting strong adaptability. The support plate, through the linkage structure of bolts, collars, and connecting rods, can achieve precise adjustment of the opening and closing range, accommodating heating tubes of different diameters. The clamping plate, driven by the control ring, slides within the rectangular through slot, enabling adaptive clamping of heating tubes with different diameters. This highly flexible adaptability design allows the same fixture to meet the bending processing needs of heating tubes of various specifications and shapes, adapting to different size processing requirements. This greatly expands the application range of the fixture and reduces the equipment investment and time costs incurred by enterprises due to fixture replacement. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall axial view structure of this utility model.

[0013] Figure 2 This is a top view schematic diagram of the overall structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the connection relationship between the base plate and the fixing ring of this utility model.

[0015] Figure 4 This is a schematic diagram of the disassembled structure of the support plate and top rod of this utility model.

[0016] Figure 5 This is the utility model Figure 4 A magnified schematic diagram of part A in the diagram.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Base; 101. Connecting block; 102. Base plate; 103. Fixing rod; 104. Cylinder; 105. Pressure plate; 2. Top rod; 201. First connecting rod; 202. Support plate; 203. Bolt; 204. Collar; 205. Second connecting rod; 3. Sliding rod; 301. Fixing ring; 302. Side rod; 303. Control ring; 304. Sliding block; 305. Clamping plate. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0019] Example 1: As shown in the attached document Figure 1 To be continued Figure 5 As shown: This utility model provides a precision positioning fixture for bending electric heating tubes, comprising: a base 1; the base 1 adopts a rectangular plate structure, and the top of the base 1 has a rectangular array of circular grooves, which not only serve a positioning function but also facilitate the subsequent installation of connecting blocks 101; the bottom of the circular grooves on the top of the base 1 has a through-hole screw hole structure; six sets of cylindrical connecting blocks 101 are arranged in the circular grooves on the top of the base 1, and the bottom of the connecting blocks 101 is fixedly connected with a screw, which cooperates with the screw hole at the bottom of the circular groove on the top of the base 1 to realize the detachable connection between the connecting blocks 101 and the base 1, facilitating the installation of connecting blocks 101. The position of the connecting block 101 is adjusted according to the actual processing requirements; a circular plate-shaped base plate 102 is fixedly installed on the top of the connecting block 101, and the base plate 102 provides a stable plane for the subsequent installation of various components; a cylindrical top rod 2 is fixedly installed in the middle of the top of the two sets of base plates 102, and a threaded groove structure is opened on the outer side of the middle of the top rod 2; five sets of U-shaped rod structures of the first connecting rod 201 are rotatably connected to the bottom outer side of the top rod 2 in a ring array; an arc-shaped plate structure of the support plate 202 is rotatably connected to the outer end of the first connecting rod 201, and the support plate 202 can fit the arc surface of the heating tube to provide stable support.

[0020] The specific usage and function of this embodiment are as follows: Place the rectangular plate base 1 stably on the worktable of the tube bending processing equipment. According to the specifications of the heating tube to be processed and the tube bending process requirements, select a suitable position in the circular grooves arranged in a rectangular array on the top of the base 1 to install one or more sets of connecting blocks 101. Align the screw at the bottom of the connecting block 101 with the screw hole at the bottom of the circular groove of the base 1, and tighten it with the matching nut to ensure that the connecting block 101 is firmly connected to the base 1 without shaking, so as to achieve a detachable connection. This allows for flexible adjustment of the position of the connecting block 101 to adapt to different processing requirements. Then, the top rod 2 and the fixing ring 301 can be installed in the required working area as needed.

[0021] Example 2: Based on Example 1, as shown in the appendix Figure 1 To be continued Figure 5 As shown: Among them, two sets of base plates 102 are fixedly provided with L-shaped rod structure fixing rods 103 at the top; a cylinder 104 is fixedly provided on one side bottom of the fixing rod 103; a circular plate structure pressure plate 105 is provided at the bottom end of the cylinder 104 for transmission connection. By controlling the extension and retraction of the cylinder 104, the pressure plate 105 can be moved up and down to press and fix the top of the electric heating tube, further enhancing the clamping stability of the electric heating tube.

[0022] The top rod 2 has a bolt 203 rotatably mounted on its outer side via a threaded connection, and the outer side of the bolt 203 has an annular groove structure. A ring 204 with an annular structure is fitted inside the annular groove on the outer side of the bolt 203. Five sets of second connecting rods 205 are rotatably mounted in an annular array on the outer side of the ring 204, and the outer ends of the second connecting rods 205 are rotatably connected to the inner side of the support plate 202. By rotating the bolt 203, the ring 204 is driven to move up and down. Then, through the linkage of the second connecting rods 205 and the first connecting rods 201, the support plate 202 is opened and closed to adapt to the positioning requirements of heating tubes with different bending radii.

[0023] Among them, a cylindrical sliding rod 3 is fixedly installed on one side of the top of two sets of base plates 102; a ring-shaped fixing ring 301 is slidably installed on the outside of the sliding rod 3, and four sets of through rectangular slot structures are opened on the outside of the fixing ring 301 in a ring array, a ring groove structure is opened on one side of the fixing ring 301, and a through screw hole structure is opened on one side of the fixing ring 301.

[0024] The base plate 102 has a side rod 302 rotatably mounted on one side of its top, and the side rod 302 is rotatably connected to the screw hole on one side of the fixing ring 301 via a threaded engagement. A control ring 303 with a circular structure is rotatably mounted in the circular groove on one side of the fixing ring 301, and a threaded groove structure is opened on one side of the control ring 303. Four sets of rectangular block sliders 304 are slidably mounted in a circular array on the outer side of the fixing ring 301, and a threaded groove structure is opened on one side of the sliders 304. The sliders 304 are connected to the control ring 303 via a threaded engagement. An arc-shaped plate clamping plate 305 is fixedly mounted on the inner end of the slider 304. By rotating the control ring 303, the slider 304 can slide in the rectangular through groove, thereby driving the clamping plate 305 to open and close, so as to clamp the heating tube from all sides.

[0025] The specific usage and function of this embodiment are as follows: In this invention, by observing the diameter and bending portion of the heating element, the bolt 203 on the outer side of the rotating top rod 2 moves up and down on the top rod 2 through threaded engagement, causing the collar 204 to move synchronously. The collar 204 is linked to the first connecting rod 201 through the second connecting rod 205 on the outer side, thereby controlling the opening and closing of the arc-shaped support plate 202 on the base plate 102, adjusting it so that the support plate 202 is tightly attached to the arc-shaped surface of the heating element, providing stable lateral support for the heating element and adapting to the positioning requirements of heating elements with different bending diameters. The cylinder 104 installed at the bottom of one side of the fixing rod 103 is activated, and the extension and retraction of the cylinder 104 are controlled, causing the circular plate pressure plate 105 connected to the bottom end to move downward until the pressure plate 105 tightly presses the heating element. At the top of the tube, the heating element is pressed and fixed from above. Then, two sets of fixing rings 301 are respectively set at both ends of the opening of the heating element. Rotate the side rod 302 on one side of the top of the base plate 102 to adjust the position of the fixing ring 301 on the slide rod 3 to a suitable height. Then rotate the control ring 303 in the annular groove on one side of the fixing ring 301. The control ring 303 drives the slider 304 to slide in the rectangular through groove on the outside of the fixing ring 301 through the thread engagement. This causes the arc-shaped clamping plate 305 fixed on the inner side to move synchronously, clamping the heating element from all sides from the outside, further fixing the position of both ends of the heating element. Through multi-directional clamping, the heating element is completely fixed in the fixture, achieving a precise positioning effect and improving processing accuracy.

Claims

1. A precision positioning fixture for bending electric heating tubes, characterized in that, include: Base (1); The base (1) adopts a rectangular plate structure, and the top of the base (1) is provided with a circular groove structure in a rectangular array. The bottom of the circular groove at the top of the base (1) is provided with a through-hole screw structure; Six sets of cylindrical connecting blocks (101) are provided in the circular groove at the top of the base (1), and the bottom of the connecting blocks (101) is fixedly connected with a screw; The top of the connecting blocks (101) is fixedly provided with a circular plate structure base plate (102); Among them, the top of the two sets of base plates (102) is fixedly provided with a cylindrical top rod (2), and the middle outer side of the top rod (2) is provided with a threaded groove structure; The bottom outer side of the top rod (2) is rotatably connected with five sets of U-shaped rod structures first connecting rods (201) in a ring array; The outer end of the first connecting rod (201) is rotatably connected with an arc plate structure support plate (202).

2. The precision positioning fixture for bending electric heating tubes as described in claim 1, characterized in that: Two of the base plates (102) are fixedly provided with L-shaped rods (103) at their top; a cylinder (104) is fixedly provided at the bottom of one side of the fixed rod (103); and a circular plate-shaped pressure plate (105) is provided at the bottom of the cylinder (104) for transmission connection.

3. The precision positioning fixture for bending electric heating tubes as described in claim 1, characterized in that: The outer side of the top rod (2) is provided with a bolt (203) through threaded engagement, and the outer side of the bolt (203) is provided with an annular groove structure.

4. The precision positioning fixture for bending electric heating tubes as described in claim 3, characterized in that: The annular groove on the outside of the bolt (203) is fitted with a ring (204) with an annular structure; five sets of second connecting rods (205) are arranged in an annular array on the outside of the ring (204), and the outer end of the second connecting rod (205) is rotatably connected to the inner side of the support plate (202).

5. The precision positioning fixture for bending electric heating tubes as described in claim 1, characterized in that: One of the two sets of base plates (102) has a cylindrical sliding rod (3) fixedly installed on one side of its top; a ring-shaped fixing ring (301) is slidably installed on the outside of the sliding rod (3), and the outside of the fixing ring (301) has four sets of through rectangular slot structures in a ring array, a ring groove structure is opened on one side of the fixing ring (301), and a through screw hole structure is opened on one side of the fixing ring (301).

6. The precision positioning fixture for bending electric heating tubes as described in claim 5, characterized in that: A side rod (302) is rotatably provided on one side of the top of the base plate (102), and the side rod (302) is rotatably connected to the screw hole on one side of the fixing ring (301) by thread engagement; a control ring (303) with a circular structure is rotatably provided in the circular groove on one side of the fixing ring (301), and a threaded groove structure is provided on one side of the control ring (303).

7. The precision positioning fixture for bending electric heating tubes as described in claim 5, characterized in that: The rectangular groove on the outside of the fixed ring (301) is arranged in a ring array with four sets of rectangular block structure sliders (304), and a threaded groove structure is provided on one side of the slider (304). The slider (304) and the control ring (303) are connected by threaded engagement; an arc plate structure clamp (305) is fixedly provided on the inner end of the slider (304).

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