Welding assembly

Abstract

The utility model discloses a welding assembly, and relates to the technical field of welding, and the welding assembly comprises a first plastic part; a first welding area is formed on the first plastic part, the second plastic part is provided with an assembling wall, the assembling wall and the first plastic part are overlapped and spaced, a second welding area corresponding to the first welding area is formed on the assembling wall, an observation hole is further formed in the assembling wall, and the first welding area and / or the second welding area can be observed through the observation hole. The observation hole is formed in the assembly wall, and the first welding area and the second welding area are observed through the observation hole, so that the welding strength and quality between the second plastic part and the first plastic part can be confirmed, and damage verification and tensile force confirmation of the welding strength between the second plastic part and the first plastic part after welding are not needed; and therefore, the product strength can be ensured, and the product force value requirement can be ensured.

Description

Technical Field

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

[0002] In the related technology, the structural movement of two plastic products is fixed by constraints, among which the most common way to fix two plastic products is welding. However, during the welding process, it is necessary to check and confirm the height of the piercing welding needle and the operating technique to ensure the welding strength. If the height of the welding needle is not checked and confirmed, the welding strength of the product may be affected after welding, causing batch detachment problems, which cannot be accurately detected. Whether the requirements are met after welding requires destructive verification and tensile confirmation, which will cause product waste and greatly reduce the product strength value. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a welding assembly that can quickly observe and confirm the welding strength of the product without the need for destructive verification and tensile force confirmation of the welding strength of the product after welding, thereby ensuring both the strength of the product and the force value requirements of the product.

[0004] According to the welding assembly of the embodiment of the utility model, it includes: a first plastic part; a second plastic part, the second plastic part and the first plastic part are welded together, the first plastic part forms a first welding area, the second plastic part has an assembly wall, the assembly wall and the first plastic part are overlapped and spaced apart, the assembly wall forms a second welding area corresponding to the first welding area, and the assembly wall is also formed with an observation hole, through which the first welding area and / or the second welding area can be observed.

[0005] According to the welding assembly of the embodiment of the utility model, the first plastic part forms a first welding area, the second plastic part has an assembly wall, the assembly wall and the first plastic part are overlapped, the assembly wall forms a second welding area corresponding to the first welding area, and an observation hole is formed in the assembly wall. The first welding area and the second welding area can be observed through the observation hole, so that the welding strength between the second plastic part and the first plastic part can be confirmed, and there is no need to perform destructive verification and tensile force to confirm the welding strength between the second plastic part and the first plastic part after welding, thereby ensuring both product strength and product force value requirements.

[0006] According to some embodiments of the present invention, the second welding area and the observation hole are arranged opposite to each other.

[0007] According to some embodiments of the present invention, the second welding area and the observation hole are spaced apart.

[0008] According to some embodiments of the present invention, the observation hole and the second welding area are parallel to each other.

[0009] According to some embodiments of the present invention, along the first direction, the maximum size of the observation hole is D1, and the maximum size of the second welding area is D2, satisfying the relationship: D2<D1, and the first direction is perpendicular to the stacking direction of the assembly wall and the first plastic part.

[0010] According to some embodiments of the present invention, the relationship is satisfied: 15 mm ≤ D1 ≤ 20 mm.

[0011] According to some embodiments of the present invention, along the second direction, the maximum size of the observation hole is D3, and the maximum size of the second welding area is D4, satisfying the relationship: D4<D3, and the first direction, the second direction, and the stacking direction of the assembly wall and the first plastic part are perpendicular to each other.

[0012] According to some embodiments of the present invention, the relationship is satisfied: 8mm≤D3≤10mm.

[0013] According to some embodiments of the present invention, the maximum distance between the second welding area and the observation hole is D5, which satisfies the relationship: 2mm≤D5≤2.5mm.

[0014] According to some embodiments of the present invention, there are multiple observation holes, and the multiple observation holes are arranged around the second welding area.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of a welding assembly according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of the welding assembly and welding head after being assembled in the embodiment of the utility model;

[0019] Figure 3 It is a top view of the welding assembly of the embodiment of the utility model.

[0020] Reference numerals:

[0021] Welding assembly 100;

[0022] A first plastic part 10; a first welding area 11;

[0023] Second plastic part 20; assembly wall 21; second welding area 22; observation hole 23;

[0024] Welding head 30. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Reference below Figure 1-Figure 3 A welding assembly 100 according to an embodiment of the utility model is described, comprising: a first plastic part 10; a second plastic part 20, the second plastic part 20 and the first plastic part 10 are welded together, the first plastic part 10 is formed with a first welding area 11, the second plastic part 20 has an assembly wall 21, the assembly wall 21 and the first plastic part 10 are overlapped and spaced apart, the assembly wall 21 is formed with a second welding area 22 corresponding to the first welding area 11, and the assembly wall 21 is also formed with an observation hole 23, through which the first welding area 11 and / or the second welding area 22 can be observed.

[0027] The first plastic part 10 and the second plastic part 20 may be made of the same material, and the first plastic part 10 and the second plastic part 20 may be made of the same type of material. When the first plastic part 10 and the second plastic part 20 are welded, the first plastic part 10 and the second plastic part 20 can be melted and fixed at the same time. For example, the first plastic part 10 and the second plastic part 20 may both be made of PP, ABS, etc., and may be reasonably selected according to actual conditions.

[0028] As an example of the present application, the second plastic part 20 and the first plastic part 10 can be welded by ultrasound. When the ultrasound acts on the plastic contact surface, high-frequency vibrations of tens of thousands of times per second are generated. This high-frequency vibration with a certain amplitude transmits ultrasonic energy to the welding area through the welding head 30. Since the acoustic resistance of the welding area, i.e., the interface where the second plastic part 20 and the first plastic part 10 are welded, is large, local high temperature will be generated. Since the thermal conductivity of plastic is poor, it cannot be dissipated in time and accumulates in the welding area, causing the contact surface of the second plastic part 20 and the first plastic part 10 to melt rapidly. After pressure is applied, they are fused into one. When the ultrasound stops acting, the pressure is allowed to continue for a few seconds to solidify and form, thus forming a strong molecular chain to achieve the purpose of welding. The welding strength can be close to the strength of the raw materials, thereby achieving the effect of quickly and firmly welding the second plastic part 20 and the first plastic part 10. In addition, the ultrasonic welding process does not generate smoke and harmful gases, which is beneficial to environmental protection.

[0029] The first plastic part 10 is formed with a first welding area 11, and the second plastic part 20 has an assembly wall 21. The assembly wall 21 and the first plastic part 10 are overlapped and spaced apart to form a welding gap between the first plastic part 10 and the second plastic part 20. The welding gap of the plastic product can be between 0.05-0.2mm, but the welding gap of different plastic products is different. It can be reasonably set and adjusted according to the actual product material. A reasonable welding gap can ensure welding strength and sealing, thereby reducing the risk of loose welding and air leakage and liquid leakage.

[0030] The assembly wall 21 is formed with a second welding area 22 corresponding to the first welding area 11. During welding, the first welding area 11 and the second welding area 22 are rapidly melted. After pressure is applied, the first welding area 11 and the second welding area 22 are integrated and solidified to achieve a welding effect. The assembly wall 21 is also formed with an observation hole 23. The observation hole 23 penetrates the assembly wall 21 along the thickness direction of the assembly wall 21, and the shape of the observation hole 23 can be reasonably set according to actual conditions. The first welding area 11 and / or the second welding area 22 can be observed through the observation hole 23, that is, the first welding area 11 can be observed through the observation hole 23, or the second welding area 22 can be observed through the observation hole 23, or the first welding area 11 and the second welding area 22 can be observed through the observation hole 23. This application is described by taking the observation of the first welding area 11 and the second welding area 22 through the observation hole 23 as an example.

[0031] Furthermore, in the process of debugging the position of the welding head 30 before welding, the staff observes the first welding area 11 and the second welding area 22 through the observation hole 23, and can observe that the welding head 30 passes through the second welding area 22 and is inserted into the first welding area 11. The depth of the welding head 30 inserted into the first welding area 11 can be determined according to the material and wall thickness of the first plastic part 10. No specific limitation is made here, as long as the welding strength and welding quality can be met.

[0032] During the welding process, the staff observes the first welding area 11 and the second welding area 22 through the observation hole 23, and can observe that the first welding area 11 and the second welding area 22 are rapidly melted, and can observe the melting state of the first welding area 11 and the second welding area 22, the uniformity of the welding process, and whether there are defects such as unfusion and bubbles. Then, the staff can confirm the welding strength and welding quality between the second plastic part 20 and the first plastic part 10 according to the hot melting conditions of the first welding area 11 and the second welding area 22.

[0033] Therefore, after welding, there is no need to perform destructive verification and tensile force to confirm the welding strength between the second plastic part 20 and the first plastic part 10, thereby ensuring both product strength and product force requirements. In addition, the observation hole 23 has a simple structure and can be set in a limited space, which can reduce the manufacturing cost of the welding assembly 100 and the space occupancy rate of the welding assembly 100.

[0034] According to the welding assembly 100 of the embodiment of the utility model, the first plastic part 10 is formed with a first welding area 11, the second plastic part 20 has an assembly wall 21, the assembly wall 21 and the first plastic part 10 are overlapped, the assembly wall 21 is formed with a second welding area 22 corresponding to the first welding area 11, and an observation hole 23 is formed in the assembly wall 21. The first welding area 11 and the second welding area 22 can be observed through the observation hole 23, so that the welding strength between the second plastic part 20 and the first plastic part 10 can be confirmed, and there is no need to perform destructive verification and tensile force to confirm the welding strength between the second plastic part 20 and the first plastic part 10 after welding, thereby ensuring both product strength and product force value requirements.

[0035] According to some embodiments of the present invention, Figure 1 As shown, the second welding area 22 and the observation hole 23 are arranged opposite to each other.

[0036] Among them, the second welding area 22 and the observation hole 23 can be arranged relative to each other, so that the staff can intuitively see the specific condition of the second welding area 22 through the observation hole 23, making real-time observation during the welding process easy and direct. Real-time observation of the status of the second welding area 22 and the first welding area 11 helps the staff to promptly discover problems in the welding process, such as insufficient welding, bubble generation, etc. By timely adjusting the welding parameters or taking other measures, the welding quality can be ensured, which is beneficial to improving the observability of the welding process and the welding quality.

[0037] According to some embodiments of the present invention, Figure 1 As shown, the second weld zone and the viewing hole are spaced apart.

[0038] The second welding area 22 and the observation hole 23 are spaced apart from each other, which can ensure that the molten plastic during the welding process does not flow to the observation hole 23, and also reduce the heat transferred to the observation hole 23 during the welding process, thereby avoiding the observation hole 23 from being blocked or damaged, which is beneficial to improving the safety and reliability of the welding process.

[0039] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the observation hole 23 and the second welding area 22 can be parallel to each other, so that the design position of the observation hole 23 will not interfere with the welding process, and can further enable the staff to conveniently observe the specific conditions of the second welding area 22 and the first welding area 11, so that the staff can observe the melting state of the welding interface, the uniformity of the welding process, and whether there are defects such as unfusion and bubbles in real time during the welding process. Then, the staff can confirm the welding strength and welding quality between the second plastic part 20 and the first plastic part 10 according to the hot melting conditions of the first welding area 11 and the second welding area 22.

[0040] It can be explained that the size and position of the observation hole 23 need to be determined according to specific welding requirements and the characteristics of the first plastic part 10 to ensure that sufficient observation field is provided for the staff without negatively affecting the welding quality.

[0041] According to some embodiments of the present invention, Figure 3 As shown, along the first direction, the maximum size of the observation hole 23 is D1, and the maximum size of the second welding area 22 is D2, satisfying the relationship: D2<D1, and the first direction is perpendicular to the stacking direction of the assembly wall 21 and the first plastic part 10.

[0042] The first direction can be Figure 3 The first direction is perpendicular to the stacking direction of the assembly wall 21 and the first plastic member 10, such as Figure 3 As shown, the maximum size of the observation hole 23 is D1, and the maximum size of the second welding area 22 is D2, satisfying the relationship: D2<D1. This arrangement can make the projection of the second welding area 22 in the second direction located within the projection of the observation hole 23, and can provide a larger field of view for the staff, so that the staff can observe the specific situation of the second welding area 22 more clearly through the observation hole 23, thereby avoiding the existence of an observation blind spot. The larger observation hole 23 can ensure that multiple corners of the second welding area 22 can be observed as much as possible, thereby improving the monitoring effect of the welding quality. It helps the staff to check the melting state of the welding interface, the uniformity of the welding process, and whether there are defects such as unfusion and bubbles in real time, which is beneficial for the staff to confirm the welding strength and welding quality between the second plastic part 20 and the first plastic part 10 according to the hot melting conditions of the first welding area 11 and the second welding area 22. It should be noted that the second direction is perpendicular to the first direction, and the second direction is perpendicular to the stacking direction of the assembly wall 21 and the first plastic part 10. The second direction can be Figure 3 in the Y direction.

[0043] It can be explained that if the observation hole 23 is too large, the strength of the second plastic part 20 may be reduced, while if the observation hole 23 is too small, the observation effect may be affected. Therefore, the size and specific position of the observation hole 23 need to be reasonably set according to the specific welding requirements and the characteristics of the second plastic part 20 to meet the use requirements.

[0044] According to some embodiments of the present invention, the relationship is satisfied: 15mm≤D1≤20mm, that is, D1 can be 15mm, 20mm, and any value between 15mm and 20mm, for example: D1 can be 15mm, 16mm, 17mm, 18mm, 19mm, 20mm and other values, but the present invention is not limited thereto, D1 can also be other values ​​between 15mm and 20mm, as long as D1 is 15mm, 20mm, and any value between 15mm and 20mm. Setting D1 within the range of 15mm≤D1≤20mm can ensure that the welding process can be effectively observed and monitored, thereby improving the monitoring effect of the welding quality, and further improving the welding safety and reliability of the welding assembly 100.

[0045] It can be explained that the specific value of D1 can be reasonably set according to the material of the second plastic part 20 and the size of the second welding area 22 to ensure that it can provide workers with a sufficient observation field without having a negative impact on the welding quality.

[0046] According to some embodiments of the present invention, Figure 3 As shown, along the second direction, the maximum size of the observation hole 23 is D3, and the maximum size of the second welding area 22 is D4, satisfying the relationship: D4<D3, and the first direction, the second direction and the stacking direction of the assembly wall 21 and the first plastic part 10 are perpendicular to each other.

[0047] The second direction can be Figure 3In the Y direction, the first direction, the second direction, and the stacking direction of the assembly wall 21 and the first plastic part 10 are perpendicular to each other. Along the second direction, the maximum size of the observation hole 23 is D3, and the maximum size of the second welding area 22 is D4, satisfying the relationship: D4<D3. Such a setting can provide a larger field of view for the staff, so that the staff can observe the specific situation of the second welding area 22 more clearly through the observation hole 23, thereby avoiding the existence of an observation blind spot. The larger observation hole 23 can ensure that multiple corners of the second welding area 22 can be observed as much as possible, thereby further improving the monitoring effect of the welding quality. It is also helpful for the staff to check the melting state of the welding interface, the uniformity of the welding process, and whether there are defects such as unfusion and bubbles in real time, which is conducive to the staff to confirm the welding strength and welding quality between the second plastic part 20 and the first plastic part 10 according to the hot melting conditions of the first welding area 11 and the second welding area 22, so that there is no need to perform destructive verification after welding and confirm the welding strength between the second plastic part 20 and the first plastic part 10 by tensile force, thereby ensuring both product strength and product force value requirements.

[0048] According to some embodiments of the present invention, the relationship is satisfied: 8mm≤D3≤10mm, that is, D3 can be 8mm, 10mm, and any value between 8mm and 10mm, for example: D3 can be 8mm, 9mm, 9.1mm, 9.4mm, 9.9mm, 10mm, etc., but the present invention is not limited thereto, and D3 can also be other values ​​between 8mm and 10mm, as long as D3 is 8mm, 10mm, and any value between 8mm and 10mm. Setting D3 within the range of 8mm to 10mm can ensure that the welding process can be effectively observed and monitored, thereby improving the monitoring effect of the welding quality, and further improving the welding safety and reliability of the welding assembly 100.

[0049] It can be explained that the specific value of D3 can be reasonably set according to the material of the second plastic part 20 and the size of the second welding area 22 to ensure that it can provide sufficient observation field for the staff without having a negative impact on the welding quality.

[0050] According to some embodiments of the present invention, Figure 3As shown, the maximum distance between the second welding area 22 and the observation hole 23 can be D5, satisfying the relationship: 2mm≤D5≤2.5mm, that is, D5 can be 2mm, 2.5mm and any value between 2mm and 2.5mm. For example, D5 can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.5mm and other values, but the utility model is not limited to this. D5 can also be other values ​​between 2mm and 2.5mm, as long as D5 is 2mm, 2.5mm and any value between 2mm and 2.5mm.

[0051] The maximum distance between the second welding area 22 and the observation hole 23 is greater than D5, which will cause the observation hole 23 to be too far away from the second welding area 22, which is not enough for the staff to clearly see the welding process from the observation hole 23, and thus it is not conducive to the staff to confirm the welding quality. If the interval between the second welding area 22 and the observation hole 23 is too small, the heat during the welding process is transferred to the observation hole 23, and the molten plastic during the welding process may flow to the observation hole 23, thereby causing the observation hole 23 to be blocked or damaged, which is not conducive to improving the safety and reliability of the welding process.

[0052] Therefore, setting D5 within the range of 2mm to 2.5mm can ensure that the staff can clearly observe the welding process from the observation hole 23, so that the staff can accurately confirm the welding quality, thereby improving the welding reliability and welding quality of the welding assembly 100, and reducing the risk of the observation hole 23 being blocked or damaged.

[0053] According to some embodiments of the present invention, there may be multiple observation holes 23, for example, there may be two, three, four, etc. observation holes 23, but the present invention is not limited thereto, and there may be other numbers of observation holes 23, as long as there are multiple observation holes 23. Multiple observation holes 23 may be arranged around the second welding area 22, and the second welding area 22 and the first welding area 11 may be observed from multiple different angles and positions through the multiple observation holes 23, so that the details of the second welding area 22 and the first welding area 11 may be observed from multiple angles and positions, and multiple corners of the second welding area 22 and the first welding area 11 may be observed as much as possible, thereby improving the monitoring effect of welding quality, helping the staff to check the melting state of the welding interface, the uniformity of the welding process, and whether there are defects such as unfusion and bubbles in real time, and thus facilitating the staff to confirm the welding strength and welding quality between the second plastic part 20 and the first plastic part 10 according to the hot melting conditions of the first welding area 11 and the second welding area 22.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding assembly (100), characterized in that: include: A first plastic part (10); A second plastic part (20), wherein the first plastic part (10) is formed with a first welding area (11), the second plastic part (20) has a mounting wall (21), the mounting wall (21) and the first plastic part (10) are overlapped and spaced apart, the mounting wall (21) is formed with a second welding area (22) corresponding to the first welding area (11), and the mounting wall (21) is also formed with an observation hole (23), through which the first welding area (11) and / or the second welding area (22) can be observed.

2. The welding assembly (100) according to claim 1, characterized in that: The second welding area (22) and the observation hole (23) are arranged opposite to each other.

3. The welding assembly (100) according to claim 2, characterized in that: The second welding area (22) and the observation hole (23) are spaced apart.

4. The welding assembly (100) according to claim 2, characterized in that: The observation hole (23) and the second welding area (22) are parallel to each other.

5. The welding assembly (100) according to any one of claims 1 to 4, characterized in that: Along a first direction, the maximum dimension of the observation hole (23) is D1, and the maximum dimension of the second welding area (22) is D2, satisfying the relationship: D2<D1, and the first direction is perpendicular to the stacking direction of the assembly wall (21) and the first plastic part (10).

6. The welding assembly (100) according to claim 5, characterized in that: Satisfies the relationship: 15mm≤D1≤20mm.

7. The welding assembly (100) according to claim 5, characterized in that: Along the second direction, the maximum size of the observation hole (23) is D3, and the maximum size of the second welding area (22) is D4, satisfying the relationship: D4<D3, and the first direction, the second direction, and the stacking direction of the assembly wall (21) and the first plastic part (10) are perpendicular to each other.

8. The welding assembly (100) according to claim 7, characterized in that: The relationship is satisfied: 8mm≤D3≤10mm.

9. The welding assembly (100) according to claim 3, characterized in that: The maximum distance between the second welding area (22) and the observation hole (23) is D5, which satisfies the relationship: 2mm≤D5≤2.5mm.

10. The welding assembly (100) according to any one of claims 1 to 4, characterized in that: There are a plurality of observation holes (23), and the plurality of observation holes (23) are arranged around the second welding area (22).

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