Metal tubular electric heating element welding positioning tool

Abstract

The utility model provides a kind of metal tubular electric heating element welding positioning tool, comprising: bottom plate, bottom plate is equipped with locating hole;Positioning block, positioning connection with bottom plate by locating hole, positioning block is used to position installation mounting bolt;Pile, for supporting metal tubular electric heating element, so that metal tubular electric heating element and mounting bolt are at same level height and are welded. Positioning block and locating hole are positioned and connected, and mounting bolt and positioning block are positioned and installed, so that it is not necessary to manually measure and mark the welding position of mounting bolt with ruler, so that the welding position of mounting bolt is determined, offset of mounting bolt during welding process is avoided, welding precision deviation is caused, and the flatness after mounting bolt and metal tubular electric heating element are welded is ensured. According to the model of metal tubular electric heating element, the welding position of mounting bolt can be quickly positioned by the cooperation of positioning block and locating hole, so that welding efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling equipment technology, and in particular to a welding positioning tooling for metal tubular electric heating elements. Background Technology

[0002] To facilitate installation on equipment, metal tubular electric heating elements require mounting bolts to be welded to both ends of the element after it is formed.

[0003] Currently, the welding of mounting bolts for existing metal tubular electric heating elements is usually done by using a ruler and a manual marker to mark the positions, which results in low welding efficiency. Furthermore, because the welding positions of the mounting bolts are determined manually by measuring and marking with a ruler, the welding positioning accuracy of the mounting bolts at both ends of the metal tubular electric heating element is significantly off, and the flatness is poor. This can easily lead to quality problems such as poor sealing and deformation after installation on the equipment. Summary of the Invention

[0004] This utility model provides a welding positioning fixture for metal tubular electric heating elements, which solves the problems of low welding efficiency, large positioning accuracy deviation and poor flatness in the welding of mounting bolts of existing metal tubular electric heating elements, which are usually positioned by drawing lines with a ruler and a manual marker.

[0005] This utility model provides a welding and positioning fixture for a metal tubular electric heating element, comprising: The base plate has positioning holes. The positioning block is positioned and connected to the base plate through the positioning hole, and the positioning block is used to position and install the mounting bolts. A pad is used to support the metal tubular electric heating element so that the metal tubular electric heating element and the mounting bolt are welded at the same horizontal level.

[0006] In one embodiment of the present invention, the positioning hole includes a base hole and multiple sets of model holes distributed along the length direction of the base plate, and the spacing between the base hole and the model holes corresponds to the model specifications of the metal tubular electric heating element.

[0007] In one embodiment of the present invention, the base plate is provided with a scale mark along the length direction corresponding to the model hole, and the scale mark is located in the middle of the base plate along the width direction.

[0008] In one embodiment of the present invention, the scale markings divide the base plate into a first positioning area and a second positioning area. Both the first positioning area and the second positioning area are provided with basic holes and model holes. The model combination of the basic holes and model holes in the first positioning area is different from the model combination of the basic holes and model holes in the second positioning area.

[0009] In one embodiment of the present invention, the base plate is provided with grooves symmetrically along the width direction, the grooves extend along the length direction of the base plate, and the grooves are used to cooperate with the radial sidewall of the sealing part of the mounting bolt to limit the mounting bolt along its axial direction.

[0010] In one embodiment of the present invention, the groove includes a first limiting groove and a second limiting groove arranged sequentially from the inside to the outside along the width direction of the base plate, wherein the width of the first limiting groove is smaller than the width of the second limiting groove.

[0011] In one embodiment of the present invention, the width of the first limiting groove is 2mm, and the width of the second limiting groove is 3mm.

[0012] In one embodiment of the present invention, the positioning block is provided with a positioning post, and the positioning post cooperates with the positioning hole.

[0013] In one embodiment of the present invention, the positioning block is provided with a positioning groove that matches the shape of the mounting bolt.

[0014] In one embodiment of the present invention, the pad includes multiple base pads, which can be stacked in combination according to the model of the metal tubular electric heating element.

[0015] The beneficial effects of this utility model are as follows: This utility model proposes a welding positioning fixture for metal tubular electric heating elements. The positioning block is connected to the positioning hole on the base plate, and the mounting bolt is positioned and installed on the positioning block. This eliminates the need for manual measurement and marking of the welding position of the mounting bolt with a ruler, ensuring a precise welding position between the mounting bolt and the metal tubular electric heating element. This prevents misalignment of the mounting bolt during welding, avoiding welding accuracy deviations and ensuring the flatness of the welded mounting bolt and metal tubular electric heating element. The pad supports the metal tubular electric heating element, ensuring that the part of the metal tubular electric heating element to be welded is at the same horizontal level as the mounting bolt on the positioning block, avoiding any height difference after welding. This application can quickly position the welding position of the mounting bolt according to the model of the metal tubular electric heating element through the cooperation of the positioning block and the positioning hole, thereby effectively improving welding efficiency. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] In the attached diagram: Figure 1 This is a top view of a welding positioning fixture for a metal tubular electric heating element provided in an embodiment of the present invention; Figure 2 This is a front view of a metal tubular electric heating element welding positioning fixture provided in one embodiment of the present invention; Figure 3 This is a top view of the base plate of the welding positioning fixture for the metal tubular electric heating element provided in one embodiment of the present invention; Figure 4 The image shown is a top view of the welding positioning fixture for the metal tubular electric heating element and the welding state of the bare metal tubular electric heating element provided in one embodiment of the utility model. Figure 5 This is a front view showing the welding positioning fixture for the metal tubular electric heating element and the welding state of the finned metal tubular electric heating element provided in one embodiment of the utility model.

[0018] The attached figures are labeled as follows: Base plate 1, positioning hole 101, foundation hole 101a, model hole 101b, scale mark 102, first positioning area 103, second positioning area 104, groove 105, first limiting groove 105a, second limiting groove 105b, positioning block 2, positioning groove 201, mounting bolt 3, sealing part 301, pad 4, base pad 401, metal tubular electric heating element 5. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0022] Please combine Figures 1 to 5 As shown, this utility model provides a welding positioning fixture for metal tubular electric heating elements.

[0023] In an exemplary embodiment of this application, the welding positioning fixture for the metal tubular electric heating element 5 includes: Base plate 1, with positioning holes 101 provided on base plate 1; Positioning block 2 is positioned and connected to base plate 1 through positioning hole 101. Positioning block 2 is used to position and install mounting bolt 3. The pad 4 is used to support the metal tubular electric heating element 5 so that the metal tubular electric heating element 5 and the mounting bolt 3 are welded at the same horizontal level.

[0024] In this embodiment, the positioning block 2 is positioned and connected to the positioning hole 101 of the base plate 1, and the mounting bolt 3 is positioned and installed on the positioning block 2. This eliminates the need for manual measurement and marking of the welding position of the mounting bolt 3 with a ruler, ensuring the welding position of the mounting bolt 3 and the metal tubular electric heating element 5 is determined. This prevents the mounting bolt 3 from shifting during welding, thus avoiding welding accuracy deviations and ensuring the flatness of the welded parts. The pad block 4 supports the metal tubular electric heating element 5, ensuring that the part to be welded on the metal tubular electric heating element 5 is at the same horizontal level as the mounting bolt 3 on the positioning block 2, avoiding any height difference after welding. This application can quickly position the welding position of the mounting bolt 3 according to the model of the metal tubular electric heating element 5 through the cooperation of the positioning block 2 and the positioning hole 101, thereby effectively improving welding efficiency.

[0025] In an exemplary embodiment of this application, the positioning hole 101 includes a basic hole 101a and multiple sets of model holes 101b distributed along the length direction of the base plate 1. The spacing between the basic hole 101a and the model holes 101b corresponds to the model specifications of the metal tubular electric heating element 5.

[0026] In this embodiment, both the basic hole 101a and the model hole 101b include two holes symmetrically distributed along the width direction of the base plate 1. The positioning block 2 includes a basic block and a model block, and each of the basic block and the model block is provided with two positioning posts. By cooperating with the two holes, two-point positioning is achieved, avoiding positional offset after the positioning block 2 is positioned and installed with the base plate 1. By distributing multiple sets of model holes 101b along the length direction of the base plate 1, the base plate 1 can be compatible with welding of various models and specifications of metal tubular electric heating elements 5. By positioning and installing the model block with the model hole 101b of the metal tubular electric heating element 5 corresponding to the welding model on the base plate 1, the welding position of the corresponding model mounting bolt 3 can be quickly positioned, eliminating the need for manual measurement and marking of the welding position of the mounting bolt 3 with a ruler, effectively improving welding efficiency.

[0027] In an exemplary embodiment of this application, the base plate 1 is provided with a scale mark 102 corresponding to the model hole 101b along the length direction, and the scale mark 102 is located in the middle of the base plate 1 along the width direction.

[0028] In this embodiment, by setting a scale mark 102 at the position of the corresponding model hole 101b on the base plate 1, the operator can quickly determine the installation position of the model block and the corresponding model hole 101b according to the metal tubular electric heating element 5, thereby further improving the welding efficiency.

[0029] In an exemplary embodiment of this application, the scale marking 102 divides the base plate 1 into a first positioning area 103 and a second positioning area 104. Both the first positioning area 103 and the second positioning area 104 are provided with a basic hole 101a and a model hole 101b. The model combination of the basic hole 101a and the model hole 101b located in the first positioning area 103 is different from the model combination of the basic hole 101a and the model hole 101b located in the second positioning area 104.

[0030] In this embodiment, by dividing the base plate 1 into a first positioning area 103 and a second positioning area 104, and providing positioning holes 101 in both the first positioning area 103 and the second positioning area 104, respectively corresponding to the positioning dimensions of mounting bolts 3 of metal tubular electric heating elements 5 of different models and specifications, the welding fixture is compatible with welding operations of more models and specifications of metal tubular electric heating elements 5 and mounting bolts 3, effectively improving the adaptability of the welding fixture.

[0031] In an exemplary embodiment of this application, the base plate 1 is provided with grooves 105 symmetrically along the width direction. The grooves 105 extend along the length direction of the base plate 1 and are used to cooperate with the radial sidewall of the sealing part 301 of the mounting bolt 3 to limit the mounting bolt 3 along its axial direction.

[0032] In this embodiment, by providing a groove 105 extending along the length of the base plate 1 on the base plate 1, and placing the radial sidewall of the sealing part 301 of the mounting bolt 3 within the groove 105, the flatness of the mounting bolts 3 welded to both ends of the metal tubular electric heating element 5 is ensured to be consistent, thus avoiding quality problems such as poor sealing and deformation after the mounting bolts 3 are connected to the equipment.

[0033] In an exemplary embodiment of this application, the groove 105 includes a first limiting groove 105a and a second limiting groove 105b arranged sequentially from the inside to the outside along the width direction of the base plate 1, wherein the width of the first limiting groove 105a is smaller than the width of the second limiting groove 105b.

[0034] In this embodiment, by distributing a first limiting groove 105a and a second limiting groove 105b along the width direction of the base plate 1, and by making the width of the first limiting groove 105a smaller than that of the second limiting groove 105b, the base plate 1 can be adapted to the welding operation of mounting bolts 3 of different models and specifications and metal tubular electric heating elements 5, thereby further improving the compatibility of the welding fixture.

[0035] In an exemplary embodiment of this application, the width of the first limiting groove 105a is 2mm, and the width of the second limiting groove 105b is 3mm.

[0036] In this embodiment, the existing 2mm and 3mm grooves 105 can basically accommodate all existing mounting bolt sizes 3.

[0037] In an exemplary embodiment of this application, the positioning block 2 is provided with a positioning post, which cooperates with the positioning hole 101.

[0038] In this embodiment, the positioning pin and the positioning hole 101 are clearance-fitted.

[0039] In an exemplary embodiment of this application, the positioning block 2 is provided with a positioning groove 201 that matches the shape of the mounting bolt 3.

[0040] In this embodiment, by setting a positioning groove 201 on the positioning block 2 that matches the shape of the mounting bolt 3, the mounting bolt 3 can be in a stable state and welded to the metal tubular electric heating element 5 after being positioned and installed with the positioning block 2, thus avoiding the mounting bolt 3 from shifting position during the welding process and resulting in poor welding accuracy.

[0041] In an exemplary embodiment of this application, the pad 4 includes a plurality of base pads 401, which can be stacked in combination according to the model of the metal tubular electric heating element 5.

[0042] In this embodiment, when the metal tubular electric heating element 5 is a bare rod, two base pads 401 are stacked to form a pad block 4; when the metal tubular electric heating element 5 has fins, only one base pad 401 is needed.

[0043] The working principle is as follows: the positioning block 2 is positioned and connected to the positioning hole 101 of the base plate 1, and the mounting bolt 3 is positioned and installed on the positioning block 2. This eliminates the need for manual measurement and marking of the welding position of the mounting bolt 3 with a ruler, ensuring the welding position of the mounting bolt 3 and the metal tubular electric heating element 5 is determined. This prevents the mounting bolt 3 from shifting during welding, thus avoiding welding accuracy deviations and ensuring the flatness of the welded area between the mounting bolt 3 and the metal tubular electric heating element 5. The pad block 4 supports the metal tubular electric heating element 5, ensuring that the part of the metal tubular electric heating element 5 to be welded is at the same horizontal level as the mounting bolt 3 on the positioning block 2, avoiding any height difference after welding. This application can quickly position the welding position of the mounting bolt 3 according to the model of the metal tubular electric heating element 5 through the cooperation of the positioning block 2 and the positioning hole 101, thereby effectively improving welding efficiency.

[0044] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A welding and positioning fixture for a metal tubular electric heating element, characterized in that, include: The base plate has positioning holes. The positioning block is positioned and connected to the base plate through the positioning hole, and the positioning block is used to position and install the mounting bolts. A pad is used to support the metal tubular electric heating element so that the metal tubular electric heating element and the mounting bolt are welded at the same horizontal level.

2. The welding positioning fixture for the metal tubular electric heating element according to claim 1, characterized in that: The positioning holes include basic holes and multiple sets of model holes distributed along the length of the base plate. The spacing between the basic holes and the model holes corresponds to the model specifications of the metal tubular electric heating element.

3. The welding positioning fixture for the metal tubular electric heating element according to claim 2, characterized in that: The base plate has scale markings along its length corresponding to the model hole, and the scale markings are located in the middle of the base plate along its width.

4. The welding positioning fixture for the metal tubular electric heating element according to claim 3, characterized in that: The scale markings divide the base plate into a first positioning area and a second positioning area. Both the first positioning area and the second positioning area are provided with basic holes and model holes. The model combination of the basic holes and model holes in the first positioning area is different from the model combination of the basic holes and model holes in the second positioning area.

5. The welding positioning fixture for the metal tubular electric heating element according to claim 1, characterized in that: The base plate is symmetrically provided with grooves along its width direction, and the grooves extend along the length direction of the base plate. The grooves are used to cooperate with the radial sidewall of the sealing part of the mounting bolt to limit the mounting bolt along its axial direction.

6. The welding positioning fixture for the metal tubular electric heating element according to claim 5, characterized in that: The groove includes a first limiting groove and a second limiting groove arranged sequentially from the inside to the outside along the width direction of the base plate, wherein the width of the first limiting groove is smaller than the width of the second limiting groove.

7. The welding positioning fixture for the metal tubular electric heating element according to claim 6, characterized in that: The width of the first limiting groove is 2mm, and the width of the second limiting groove is 3mm.

8. The welding positioning fixture for the metal tubular electric heating element according to claim 1, characterized in that: The positioning block is provided with a positioning post, which cooperates with the positioning hole.

9. The welding positioning fixture for the metal tubular electric heating element according to claim 1, characterized in that: The positioning block is provided with a positioning groove that matches the shape of the mounting bolt.

10. The welding positioning fixture for the metal tubular electric heating element according to claim 1, characterized in that: The pad includes multiple base pads, which can be stacked in combination according to the model of the metal tubular electric heating element.

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