A hot rivet preheating apparatus

Abstract

The utility model discloses a hot riveting preheating equipment for the hot riveting of current sensor and PCB board, and the current sensor is equipped with hot melt column, and the PCB board is equipped with riveting hole corresponding with the hot melt column, and it comprises: positioning jig for installing the current sensor, hot melt device for providing high temperature gas, preheating plate with intercommunication first runner and second runner, the first end of first runner communicates with the high temperature gas outlet of hot melt device, and the second end of first runner communicates with second runner, the first end of second runner is used for butt joint with the hot melt column, and the inner diameter of second runner first end gradually increases along the direction away from the hot melt column, and the second end of second runner communicates with the outside. The utility model solves the problem of inconvenient operation of the existing hot riveting preheating equipment and easy damage to the product.

Description

Technical Field

[0001] This utility model relates to the field of hot riveting equipment technology, and in particular to a hot riveting preheating device. Background Technology

[0002] During the manufacturing process, current sensors need to be bonded and assembled with a PCB board. In existing technology, a thermosetting post is typically placed on the current sensor, and then the current sensor is thermo-riveted to the pre-drilled holes on the PCB board using this post. While direct thermo-riveting equipment is readily available, for certain materials, direct thermo-riveting can lead to cracking or unevenness in the rivet head, resulting in substandard appearance and holding power. Therefore, an additional step is needed before thermo-riveting: heating and softening the thermosetting post to make it easier to rivet, resulting in a more regular shape after riveting.

[0003] Existing hot riveting preheating equipment has a complex structure and is inconvenient to operate. Furthermore, the process of heating the hot melt column can easily damage the PCB board, leading to product defects. Utility Model Content

[0004] The main purpose of this utility model is to provide a hot riveting preheating device, which aims to solve the problems of inconvenient operation and easy damage to products caused by existing hot riveting preheating devices.

[0005] To achieve the above objectives, this utility model proposes a hot riveting preheating device for hot riveting a current sensor and a PCB board. The current sensor is provided with a hot melt post, and the PCB board is provided with riveting holes corresponding to the hot melt post. The device includes:

[0006] A positioning fixture for mounting the current sensor;

[0007] A hot-melting device is used to supply high-temperature gas;

[0008] The preheating plate has a first flow channel and a second flow channel that are interconnected. The first end of the first flow channel is connected to the high-temperature gas outlet of the hot melt device, and the second end of the first flow channel is connected to the second flow channel. The first end of the second flow channel is used to dock with the hot melt column, and the inner diameter of the first end of the second flow channel gradually increases in the direction away from the hot melt column. The second end of the second flow channel is connected to the outside.

[0009] Optionally, the extension direction of the second flow channel is parallel to the extension direction of the hot melt column.

[0010] Optionally, it further includes a positioning platform, on which the positioning fixture is mounted, and the positioning platform is used to drive the positioning fixture to perform reciprocating linear motion.

[0011] Optionally, a positioning pin is installed on the positioning platform, and the positioning fixture is provided with a positioning hole for insertion into the positioning pin.

[0012] Optionally, a positioning block is installed on the positioning platform, and the positioning block abuts against the side of the positioning fixture.

[0013] Optionally, the positioning block abuts against at least two sides of the positioning fixture.

[0014] Optionally, it further includes a first linear reciprocating drive mechanism, wherein the positioning platform is connected to the drive end of the first linear reciprocating drive mechanism, and the first linear reciprocating drive mechanism is used to drive the positioning platform to perform linear reciprocating motion along a first direction.

[0015] Optionally, it also includes a first guiding mechanism, wherein the positioning platform is slidably connected to the first guiding mechanism.

[0016] Optionally, it also includes a second linear reciprocating drive mechanism, wherein the hot melt device and the preheating plate are both connected to the drive end of the second linear reciprocating drive mechanism, and the second linear reciprocating drive mechanism is used to drive the hot melt device and the preheating plate to perform linear reciprocating motion along a second direction.

[0017] Optionally, it also includes a second guiding mechanism, wherein the hot-melt device and the preheating plate are slidably connected to the second guiding mechanism.

[0018] The beneficial effects of this utility model are as follows: by combining the positioning fixture, the hot-melting device and the preheating plate, the preheating function of the hot-melting column of the current sensor is realized, making the operation more convenient and reducing the difficulty of using the equipment and the operating cost; through the flow channel structure on the preheating plate, the high-temperature gas is accurately guided to the hot-melting column for preheating, and the airflow will flow out towards the end away from the PCB board, avoiding damage to the PCB board, effectively reducing the product defect rate, and improving production efficiency and product quality stability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the installation structure of the current sensor, PCB board and positioning fixture of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the hot riveting preheating equipment of this utility model;

[0022] Figure 3 This is a schematic diagram of the preheating plate structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the preheating plate structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation structure of the hot-melt device and the preheating plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of the positioning fixture and positioning platform of this utility model;

[0026] Label Explanation:

[0027] 1. Current sensor; 11. Hot melt column;

[0028] 2. PCB board; 21. Riveting holes;

[0029] 3. Positioning fixture;

[0030] 4. Hot melt device;

[0031] 5. Preheating plate; 54. First flow channel; 52. Second flow channel;

[0032] 6. Positioning platform; 61. Positioning pin; 62. Positioning block;

[0033] 71. First linear reciprocating drive mechanism; 72. First guide mechanism;

[0034] 81. Second linear reciprocating drive mechanism; 82. Second guide mechanism.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] One embodiment of this utility model provides a hot riveting preheating device for hot riveting a current sensor 1 and a PCB board 2. (Refer to...) Figure 1 The current sensor 1 is provided with a hot-melt post 11, and the PCB board 2 is provided with a riveting hole 21 corresponding to the hot-melt post 11. (Refer to...) Figures 2 to 4 The hot riveting preheating equipment includes:

[0040] Positioning fixture 3 is used to install the current sensor 1;

[0041] Hot melt device 4 is used to provide high-temperature gas;

[0042] The preheating plate 5 is provided with a first flow channel 54 and a second flow channel 52 that are interconnected. The first end of the first flow channel 54 is connected to the high-temperature gas outlet of the hot melt device 4, and the second end of the first flow channel 54 is connected to the second flow channel 52. The first end of the second flow channel 52 is used to dock with the hot melt column 11, and the inner diameter of the first end of the second flow channel 52 gradually increases in the direction away from the hot melt column 11. The second end of the second flow channel 52 is connected to the outside.

[0043] In this embodiment, the structure of the traditional hot riveting preheating equipment is simplified. The current sensor 1 is positioned and installed by the positioning fixture 3, and then the high-temperature gas from the hot melting device 4 is led to the hot melting column 11 for preheating through the preheating plate 5. The overall structure is simple and easy to operate. At the same time, this embodiment optimizes the flow channel structure of the preheating plate 5, which can ensure efficient preheating of the hot melting column 11 while guiding the high-temperature gas to flow out to the side away from the PCB board 2, avoiding damage to the PCB board 2 by the high-temperature gas and improving the product yield.

[0044] Specifically, refer to Figure 4 and Figure 5The high-temperature gas generated by the hot melt device 4 flows in from the first end of the first flow channel 54, and then enters the second flow channel 52 through the first flow channel 54. At this time, the hot melt column 11 is inserted into the first end of the second flow channel 52 (the bottom of the second flow channel 52 in the figure). The high-temperature gas entering the second flow channel 52 from the first flow channel 54 comes into contact with the hot melt column 11 and preheats the hot melt column 11. During this process, since the inner diameter of the first end of the second flow channel 52 gradually increases in the direction away from the hot melt column 11, the high-temperature gas can be guided to flow in the direction away from the hot melt column 11 (flowing out along the top of the second flow channel 52 in the figure). Thus, while preheating the hot melt column 11, the high-temperature gas is led out in the direction away from the hot melt column 11 (PCB board 2), avoiding damage to the PCB board 2 and improving the product yield.

[0045] Furthermore, the extension direction of the second flow channel 52 is parallel to the extension direction of the hot melt column 11.

[0046] In this embodiment, the extension direction of the second flow channel 52 is set parallel to the extension direction of the hot melt column 11, so that the high-temperature gas from the hot melt device 4 can flow precisely towards the hot melt column 11 in the same direction as the hot melt column 11 when passing through the flow channel of the preheating plate 5. This precise guidance avoids energy loss and dispersion of the high-temperature gas due to directional deviation in the flow channel, ensuring that more high-temperature gas can directly act on the hot melt column 11, thereby improving the heat transfer efficiency, enabling the hot melt column 11 to reach the required softening temperature more quickly, shortening the preheating time, and improving the working efficiency of the entire hot riveting preheating process.

[0047] Furthermore, it also includes a positioning platform 6, on which the positioning fixture 3 is mounted, and the positioning platform 6 is used to drive the positioning fixture 3 to perform reciprocating linear motion.

[0048] In this embodiment, the positioning platform 6 drives the positioning fixture 3 to perform reciprocating linear motion, enabling the current sensor 1 mounted on the positioning fixture 3 to be precisely adjusted in the horizontal direction according to actual production needs. When docking the hot melt column 11 of the current sensor 1 with the second flow channel 52 of the preheating plate 5, the operator can control the movement of the positioning platform 6 to quickly and accurately move the hot melt column 11 to the optimal docking position with the second flow channel 52, greatly improving the efficiency and accuracy of docking, reducing the errors and tedious operations that may be caused by manual adjustment, and enhancing the overall convenience of operation.

[0049] Furthermore, a positioning pin 61 is installed on the positioning platform 6, and the positioning fixture 3 is provided with a positioning hole for insertion into the positioning pin 61.

[0050] During the hot riveting preheating process, the current sensor 1 needs to be accurately installed using the positioning fixture 3 and precisely matched with related components such as the preheating plate 5. The insertion structure of the positioning pin 61 and the positioning hole provides a high-precision positioning reference for the installation of the positioning fixture 3 on the positioning platform 6. When the positioning fixture 3 is placed on the positioning platform 6, the positioning pin 61 is inserted into the positioning hole, ensuring that the positioning fixture 3 is accurately positioned in both the horizontal and vertical directions. This ensures that the hot melt column 11 of the current sensor 1 installed on the positioning fixture 3 can precisely align with the second flow channel 52 of the preheating plate 5, effectively avoiding problems such as uneven preheating or ineffective preheating of the hot melt column 11 due to positioning deviation, thus improving the quality and stability of the hot riveting preheating.

[0051] Furthermore, a positioning block 62 is installed on the positioning platform 6, and the positioning block 62 abuts against the side of the positioning fixture 3.

[0052] It should be noted that the engagement of the positioning pin 61 with the positioning hole primarily positions the positioning fixture 3 in a direction perpendicular to the plane of the positioning platform 6 and in one horizontal direction, while the contact between the positioning block 62 and the side of the positioning fixture 3 provides constraint from another horizontal direction. This embodiment, through a multi-dimensional positioning method, can more accurately determine the position of the positioning fixture 3 on the positioning platform 6, ensuring a highly precise connection between the hot melt column 11 of the current sensor 1 installed on the positioning fixture 3 and the second flow channel 52 of the preheating plate 5. This effectively avoids preheating deviation of the hot melt column 11 due to inaccurate positioning in a single direction, improving the quality and stability of hot riveting preheating.

[0053] Furthermore, the positioning block 62 abuts against at least two sides of the positioning fixture 3. In this embodiment, a plurality of positioning blocks 62 are provided, wherein the positioning fixture 3 has an overall rectangular structure, and the positioning blocks 62 are arranged in an L-shape, abutting against two adjacent sides of the positioning fixture 3, thereby completely limiting the positioning fixture 3 in the horizontal plane, preventing it from loosening, improving the alignment accuracy of the hot melt column 11 and the second flow channel 52 of the preheating plate 5, and avoiding relative displacement between the two, which would affect the preheating effect.

[0054] Furthermore, it also includes a first linear reciprocating drive mechanism 71, the positioning platform 6 is connected to the drive end of the first linear reciprocating drive mechanism 71, and the first linear reciprocating drive mechanism 71 is used to drive the positioning platform 6 to perform linear reciprocating motion along a first direction.

[0055] In this embodiment, the positioning platform 6 is driven to move by the first linear reciprocating drive mechanism 71, enabling the entire hot riveting preheating process to proceed automatically according to a preset program, greatly reducing manual intervention and improving the level of automation in production. Specifically, in this embodiment, the first linear reciprocating drive mechanism 71 is configured as a pen-shaped cylinder, the drive end of which is connected to the positioning platform 6 to drive the positioning platform 6 to perform reciprocating motion, thereby reducing costs while achieving automated operation.

[0056] Furthermore, it also includes a first guide mechanism 72, to which the positioning platform 6 is slidably connected. In this embodiment, by setting the first guide mechanism 72, the linear reciprocating motion of the positioning platform 6 is guided, causing it to move along a predetermined path and ensuring the stability of the operation. Specifically, the first guide mechanism 72 is set as a guide rail slider mechanism, wherein the bottom of the positioning platform 6 is connected to the slider of the guide rail slider mechanism, so that the positioning platform 6 moves along the direction of the guide rail.

[0057] Furthermore, it also includes a second linear reciprocating drive mechanism 81, wherein the hot melt device 4 and the preheating plate 5 are both connected to the drive end of the second linear reciprocating drive mechanism 81, and the second linear reciprocating drive mechanism 81 is used to drive the hot melt device 4 and the preheating plate 5 to perform linear reciprocating motion along the second direction.

[0058] In this embodiment, the second linear reciprocating drive mechanism 81 can precisely control the moving distance and position of the hot melt device 4 and the preheating plate 5, ensuring that the second flow channel 52 of the preheating plate 5 can accurately dock with the hot melt column 11. Precise docking ensures that the high-temperature gas is concentrated and effectively applied to the hot melt column 11, allowing it to be heated uniformly, improving preheating quality, and avoiding problems such as localized overheating or insufficient preheating of the hot melt column 11 due to inaccurate docking, thus providing a good foundation for subsequent hot riveting processes. Specifically, in this embodiment, the second linear reciprocating drive mechanism 81 is configured as a lifting cylinder, with the drive end of the lifting cylinder connected to a lifting plate. The hot melt device 4 and the preheating plate 5 are both mounted on the lifting plate, and under the drive of the lifting cylinder, they move up and down with the lifting plate.

[0059] Furthermore, a second guiding mechanism 82 is also included, with both the hot-melt device 4 and the preheating plate 5 slidably connected to the second guiding mechanism 82. In this embodiment, by setting the second guiding mechanism 82, the linear reciprocating motion of the hot-melt device 4 and the preheating plate 5 is guided, allowing them to move along a predetermined path and ensuring the stability of the operation process. Specifically, the second guiding mechanism 82 is configured as a guide rod mechanism, wherein the hot-melt device 4 and the preheating plate 5 are connected to the guide rod mechanism through a lifting plate, allowing them to move along the direction of the guide rod.

[0060] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hot riveting preheating device for hot riveting a current sensor and a PCB board, wherein the current sensor is provided with a hot melt post, and the PCB board is provided with riveting holes corresponding to the hot melt post, characterized in that, include: A positioning fixture for mounting the current sensor; A hot-melting device is used to supply high-temperature gas; The preheating plate has a first flow channel and a second flow channel that are interconnected. The first end of the first flow channel is connected to the high-temperature gas outlet of the hot melt device, and the second end of the first flow channel is connected to the second flow channel. The first end of the second flow channel is used to dock with the hot melt column, and the inner diameter of the first end of the second flow channel gradually increases in the direction away from the hot melt column. The second end of the second flow channel is connected to the outside.

2. The hot riveting preheating equipment according to claim 1, characterized in that, The extension direction of the second flow channel is parallel to the extension direction of the hot melt column.

3. The hot riveting preheating equipment according to claim 1, characterized in that, It also includes a positioning platform, on which the positioning fixture is mounted, and the positioning platform is used to drive the positioning fixture to perform reciprocating linear motion.

4. The hot riveting preheating equipment according to claim 3, characterized in that, The positioning platform is equipped with a positioning pin, and the positioning fixture is provided with a positioning hole for insertion into the positioning pin.

5. The hot riveting preheating equipment according to claim 3, characterized in that, A positioning block is installed on the positioning platform, and the positioning block abuts against the side of the positioning fixture.

6. The hot riveting preheating equipment according to claim 5, characterized in that, The positioning block abuts against at least two sides of the positioning fixture.

7. The hot riveting preheating equipment according to claim 3, characterized in that, It also includes a first linear reciprocating drive mechanism, the positioning platform being connected to the drive end of the first linear reciprocating drive mechanism, the first linear reciprocating drive mechanism being used to drive the positioning platform to perform linear reciprocating motion along a first direction.

8. The hot riveting preheating equipment according to claim 7, characterized in that, It also includes a first guide mechanism, and the positioning platform is slidably connected to the first guide mechanism.

9. The hot riveting preheating equipment according to claim 1, characterized in that, It also includes a second linear reciprocating drive mechanism, wherein the hot melt device and the preheating plate are both connected to the drive end of the second linear reciprocating drive mechanism, and the second linear reciprocating drive mechanism is used to drive the hot melt device and the preheating plate to perform linear reciprocating motion along a second direction.

10. The hot riveting preheating equipment according to claim 9, characterized in that, It also includes a second guiding mechanism, and the hot melt device and the preheating plate are both slidably connected to the second guiding mechanism.

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