Hot melting fixing die for automobile circuit board assembly

Abstract

The utility model discloses an automobile circuit board assembly hot melting fixing die which comprises a base, and a heating part and a temperature sensor are arranged in the base. Each hot melting column comprises a connecting part and a hot melting part, a screw rod is arranged at the near end of each connecting part, the far end of each connecting part is connected with the corresponding hot melting part through a rotating shaft, and the axis of each rotating shaft is parallel to the axis of the corresponding connecting part and the axis of the corresponding hot melting part and is arranged at intervals; and a plurality of first screw holes matched with the screw rods are densely formed in the surface of one side of the base. The hot melting device is simple in structure and practical in function, after the corresponding hot melting columns are installed on the base according to the number and the positions of the positioning columns on the plastic shell, hot melting operation on the positioning columns can be completed at a time, a circuit board is fixed to the plastic shell, time and labor are saved, work efficiency can be improved, and hot melting specification consistency of the positioning columns is good.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a hot-melt fixing mold for an automobile circuit board assembly. Background Art

[0002] Automobile circuit board assemblies usually include circuit boards and plastic shells. The plastic shells can protect the circuit boards and serve as a connecting and assembling structure with other automobile parts. In the production process of automobile circuit board assemblies with plastic shells, the process of fixing the circuit boards on the plastic shells is relatively important.

[0003] The earlier fixing method in the industry is to fix the circuit board to the plastic housing with screws. This fixing method has the disadvantages of short service life and easy loosening of the screws, and has been gradually eliminated.

[0004] The increasingly popular fixing method is to use the positioning pins on the plastic shell to fix the circuit board by hot-melting. When performing the hot-melting fixing operation of the positioning pins, the worker will use a soldering iron to melt and flatten the positioning pins that pass through the positioning holes on the circuit board. After the positioning pins cool and set, the circuit board can be fixed on the plastic shell. The disadvantage is that the workers need to perform hot-melting operations on the positioning pins one by one, which is time-consuming and labor-intensive, with low work efficiency, and the hot-melting specifications of the positioning pins are less consistent. Utility Model Content

[0005] The utility model aims to provide a hot-melt fixing mold for an automobile circuit board assembly.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A hot-melt fixing mold for an automobile circuit board assembly comprises a base, wherein a heating component and a temperature sensor are arranged in the base;

[0008] It also includes a plurality of hot melt columns, each of which includes a connecting portion and a hot melt portion, wherein a screw is provided at a proximal end of the connecting portion, and a distal end of the connecting portion is connected to the hot melt portion via a rotating shaft, wherein an axis of the rotating shaft is parallel to the axes of the connecting portion and the hot melt portion and is spaced apart;

[0009] A plurality of first screw holes matching with the screw rods are densely distributed on one side surface of the base.

[0010] As a further improved technical solution of the utility model, the heating component is an electric heating rod.

[0011] As a further improved technical solution of the utility model, the base is made of brass, and the connecting part and the hot-melt part of the hot-melt column are made of beryllium copper.

[0012] As a further improved technical solution of the utility model, the base is further provided with a second screw hole for connecting and installing with an external lifting mechanism.

[0013] As a further improved technical solution of the present invention, the distance between the axis of the rotating shaft and the axis of the connecting portion does not exceed one fifth of the radius of the distal end surface of the connecting portion.

[0014] As a further improved technical solution of the utility model, a handle is protruded on the outer side surface of the hot melt portion.

[0015] Compared with the prior art, the technical effects of the utility model are:

[0016] The utility model has a simple structure and practical functions. After the corresponding hot-melt columns are installed on the base according to the number and position of the positioning columns on the plastic shell, the hot-melt operation of the positioning columns can be completed at one time, and the circuit board can be fixed on the plastic shell, which saves time and effort and helps to improve work efficiency. The hot-melt specifications of the positioning columns are more consistent.

[0017] The hot melt column and the base are connected by a detachable threaded connection, and the base is densely covered with first screw holes for installing the hot melt column. During use, the number and position of the positioning columns on the plastic shell of automobile circuit board assemblies of different specifications can be adaptively adjusted. The base can be used for hot melt fixation of automobile circuit board assemblies of various specifications, and has strong versatility.

[0018] The hot melt portion of the hot melt column is connected to the connecting portion by an eccentrically arranged rotating shaft. When the hot melt column cannot be positioned directly opposite the positioning column by simply adjusting the fixed position of the hot melt column on the base, the position of the hot melt portion can be fine-tuned by rotating the hot melt portion, so that the positioning column can contact the distal end surface of the hot melt portion during hot melt pressing, further improving the versatility of the utility model when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a hot-melt fixing mold for an automobile circuit board assembly in a specific implementation mode of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the hot melt column;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the hot melt column after the hot melt portion is rotated. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0023] See also Figures 1 to 3 , a hot-melt fixing mold for an automobile circuit board assembly, comprising a base 1, wherein a heating component 2 and a temperature sensor 3 are arranged in the base 1;

[0024] The device further comprises a plurality of hot melt columns 6, wherein the hot melt columns 6 comprise a connecting portion 61 and a hot melt portion 62, wherein a screw 63 is provided at a proximal end (an end close to the base 1) of the connecting portion 61, and a distal end (an end away from the base 1) of the connecting portion 61 is connected to the hot melt portion 62 via a rotating shaft 64, wherein the axis of the rotating shaft 64 is parallel to the axes of the connecting portion 61 and the hot melt portion 62 and is arranged at intervals;

[0025] A plurality of first screw holes 11 cooperating with the screw rods 63 are densely distributed on one side surface of the base 1 .

[0026] It should be noted that the heating component 2 is used as a heat source to heat the hot melt column 6 through the base 1. The temperature sensor 3 is used to feed back the current temperature of the mold to the external controller so that the controller can control the working temperature of the mold by controlling the power of the heating component 2.

[0027] When the utility model is applied to the hot melt fixation of a certain specification of automobile circuit board assembly, firstly, the corresponding hot melt column 6 is installed on the base 1 according to the number and position of the positioning column on the plastic shell. When the ideal hot melt column 6 fixing position cannot be obtained by selecting the first screw hole 11, the hot melt portion 62 can be rotated so that the distal end surface of the hot melt portion 62 is aligned with the positioning column. After the hot melt column 6 is installed on the base 1 and heated to the right position, the positioning column on the plastic shell can be fixed by hot melt at one time. Before replacing the next specification of automobile circuit board assembly, the number and position of the hot melt column 6 on the base 1 do not need to be adjusted.

[0028] The outer wall of the rotating shaft 64 is in close contact with the connecting portion 61 and the hot-melt portion 62, and the hot-melt portion 62 needs to be rotated vigorously to rotate, so as to prevent the hot-melt portion 62 from rotating and losing its position during use.

[0029] Furthermore, the heating component 2 is an electric heating rod.

[0030] Furthermore, the base 1 is made of brass, and the connecting portion 61 and the hot-melt portion 62 of the hot-melt column 6 are made of beryllium copper.

[0031] Furthermore, the base 1 is provided with a second screw hole 12 for connecting and installing with an external lifting mechanism. The external lifting mechanism can be an existing lifting structure driven by a servo motor. After the base 1 is fixed to the moving end of the lifting mechanism, the mold can make vertical reciprocating motion driven by the lifting mechanism. When in use, the automobile circuit board assembly is fixed under the mold, and the lifting mechanism drives the mold to press down, and the hot melt operation is automatically completed.

[0032] Furthermore, the distance between the axis of the rotating shaft 64 and the axis of the connecting portion 61 does not exceed one fifth of the radius of the distal end surface of the connecting portion 61. If the contact area between the hot melt portion 62 and the connecting portion 61 is greatly reduced after the hot melt portion 62 rotates, the heat transfer efficiency from the connecting portion 61 to the hot melt portion 62 will be affected. Therefore, it is preferred that the eccentric distance of the axis of the rotating shaft 64 does not exceed one fifth of the radius of the distal end surface of the connecting portion 61.

[0033] Furthermore, a handle 65 is provided on the outer surface of the hot-melt portion 62. The purpose of providing the handle 65 is to facilitate the hot-melt portion 62 to be rotated by hand.

[0034] Compared with the prior art, the technical effects of the utility model are:

[0035] The utility model has a simple structure and practical functions. After installing corresponding hot melt columns 6 on the base 1 according to the number and position of the positioning columns on the plastic shell, the hot melt operation of the positioning columns can be completed at one time, and the circuit board can be fixed on the plastic shell, which saves time and effort and helps to improve work efficiency. The hot melt specifications of the positioning columns are more consistent.

[0036] The hot melt column 6 and the base 1 are connected by a detachable threaded connection, and the base 1 is densely covered with first screw holes 11 for installing the hot melt column 6. During use, the number and position of the positioning columns on the plastic shell of the automobile circuit board assembly of different specifications can be adaptively adjusted. The hot melt fixation of automobile circuit board assemblies of various specifications has strong versatility.

[0037] The hot melt portion 62 of the hot melt column 6 is connected to the connecting portion 61 by an eccentrically arranged rotating shaft 64. When the hot melt column 6 cannot be positioned opposite the positioning column simply by adjusting the fixed position of the hot melt column 6 on the base 1, the position of the hot melt portion 62 can be finely adjusted by rotating the hot melt portion 62, so that the positioning column can contact the distal end surface of the hot melt portion 62 during hot melt pressing, further improving the versatility of the utility model when used.

[0038] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the utility model.

Claims

1. A hot melt fixing mold for automobile circuit board components, characterized in that: It comprises a base, in which a heating component and a temperature sensor are arranged; It also includes a plurality of hot melt columns, each of which includes a connecting portion and a hot melt portion, wherein a screw is provided at a proximal end of the connecting portion, and a distal end of the connecting portion is connected to the hot melt portion via a rotating shaft, wherein an axis of the rotating shaft is parallel to the axes of the connecting portion and the hot melt portion and is spaced apart; A plurality of first screw holes matching with the screw rods are densely distributed on one side surface of the base.

2. The hot melt fixing mold for automobile circuit board assembly according to claim 1, characterized in that: The heating component is an electric heating rod.

3. The hot melt fixing mold for automobile circuit board assembly according to claim 1, characterized in that: The base is made of brass, and the connecting part and the hot-melt part of the hot-melt column are made of beryllium copper.

4. The hot melt fixing mold for automobile circuit board assembly according to claim 1, characterized in that: The base is also provided with a second screw hole for connecting and installing with an external lifting mechanism.

5. The hot melt fixing mold for automobile circuit board assembly according to claim 1, characterized in that: The distance between the axis of the rotating shaft and the axis of the connecting portion does not exceed one fifth of the radius of the distal end surface of the connecting portion.

6. The hot melt fixing mold for automobile circuit board assembly according to claim 1, characterized in that: A handle is protruded from the outer side of the hot-melt portion.

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