Cavity welding device

Abstract

The utility model relates to the technical field of welding auxiliary tools, and discloses a cavity welding device which comprises a base, a first limiting plate, a plurality of second limiting plates, a plurality of heating rods, a plurality of springs and a plurality of cover plates. The first limiting plate is arranged on the base and is in threaded connection with the base; the second limiting plate is arranged on the base and is in threaded connection with the base, and the second limiting plate and the first limiting plate are oppositely or adjacently arranged to jointly form plane clamping and fixing of a welding workpiece; at least one heating rod penetrates through a through hole formed in one second limiting plate, one end of the heating rod is connected with a welding workpiece placed on the base, and the other end of the heating rod is connected with the cover plate through a spring. At least one cover plate extending out of the base is in threaded connection with the second limiting plate and used for supporting the spring to extrude the heating rod. The utility model aims to efficiently increase the limiting accuracy and convenience; the integrated welding not only improves the welding efficiency, but also reduces the welding difficulty and cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding auxiliary frock technical field, especially a cavity welding device. BACKGROUND

[0002] When the radio frequency coaxial connector multi-way board is used in the plug-in pair, due to the tolerance of the connector itself and the tolerance of the installation hole size, the product is inconsistent in height after being placed on the installation board, which brings great difficulty to the welding positioning, and a positioning frock needs to be made for each connector for independent positioning. If a positioning frock is made for each connector, it is time-consuming and laborious to install, and each frock needs to be fixed and requires a large space. Due to the tolerance difference of the welding workpiece, the design requirements cannot be fully met during the welding process, the exposed size is uneven, and the product consistency cannot be guaranteed.

[0003] In addition, during the welding process, the tin soldering ring is heated at high temperature in sequence, and the previously completed tin soldering component may fall off again during the subsequent welding process. It is difficult to control the welding time, and if the welding time is too short, the tin soldering is insufficient, which affects the performance of the assembly, such as unstable welding, poor airtightness, etc. If the welding time is too long, the tin soldering will overflow, resulting in insufficient fullness and flatness, unstable performance. If rework is performed, the production efficiency will be reduced, and resources will be wasted. Rework often reduces the welding quality and consistency, and greatly limits the yield. CONTENT OF THE UTILITY MODEL

[0004] To solve the existing problems, the utility model provides a cavity welding device with reasonable design, practical and convenient, which aims to more flexibly and efficiently increase the precision of limiting; the utility model adopts a plurality of flexible limiting plates, so that the staff can adjust the size of limiting in multiple directions according to the needs, to adapt to the processing needs of components with different shapes and sizes. The integrated welding design not only improves the work efficiency, but also reduces the construction difficulty and cost, and brings a wider application scene for the welding process.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A cavity welding device, comprising a base, a first limiting plate, a plurality of second limiting plates, a plurality of heating rods, a plurality of springs and a plurality of cover plates; the first limiting plate is arranged on the base and is threadedly connected with the base; the second limiting plate is arranged on the base and is threadedly connected with the base, the second limiting plate is arranged opposite or adjacent to the first limiting plate, and the first limiting plate and the second limiting plate jointly form a plane clamping and fixing of a welding workpiece; at least one heating rod penetrates through a through hole arranged in the second limiting plate, and one end of the heating rod is connected with the welding workpiece placed on the base, and the other end of the heating rod is connected with the cover plate through the spring; at least one cover plate extending out of the base is threadedly connected with the second limiting plate, and is used for supporting the spring to extrude the heating rod.

[0007] As a further improvement of the utility model, a plurality of ejector rods and ejector rod barrels are further included; at least one ejector rod penetrates through a through hole arranged in the second limiting plate, and one end of the ejector rod is arranged in an ejector rod barrel extending out of the second limiting plate, and the other end of the ejector rod is connected with the second limiting plate through the spring, and is used for assisting the ejector rod in adjusting the clamping allowance.

[0008] As a further improvement of the utility model, the through hole in the second limiting plate is provided with a first thread, and the first thread is threadedly connected with the ejector rod barrel arranged outside.

[0009] As a further improvement of the utility model, the through hole in the second limiting plate is provided with a second thread, and the second thread is threadedly connected with the ejector rod.

[0010] As a further improvement of the utility model, at least one of the ejector rod barrels is provided with a hole, and a third thread is arranged in the hole and is used for threadedly connecting with the ejector rod; the nominal diameter of the third thread is equal to or smaller than the nominal diameter of the first thread.

[0011] As a further improvement of the utility model, one end of the ejector rod connected with the welding workpiece is provided with an antiskid pad.

[0012] As a further improvement of the utility model, at least one of the second limiting plates is provided with a slot hole at both sides, and is used for adjusting the relative position between the second limiting plate and the base.

[0013] As a further improvement of the utility model, the material of the base is aluminum metal.

[0014] As a further improvement of the utility model, the material of the heating rod is heat-conducting material.

[0015] As a further improvement of the utility model, the material of the first limiting plate, the second limiting plate, the ejector rod and the spring is heat-conducting material.

[0016] The utility model has the following beneficial effects:

[0017] The cavity welding device has the ability and flexibility of adjusting the clamping space, can realize flexible and stable clamping of cavities with different shapes and sizes, and is convenient for welding operation. By adjusting the position of the heating rod by the elastic force of the spring, different sizes of cavities can be adapted, and the ejection rod can be inserted into the welding workpiece to perform base integrated welding, synchronous heat transfer, melt the solder ring on the parts in different spaces, and complete the cavity sealing by tightly fitting between the base and the welding part, thereby increasing the air tightness qualification rate, and improving the reliability, efficiency and quality of welding.

[0018] Preferably, the design of the ejector rod cylinder is used to accommodate and protect the ejector rod, ensuring that the external heat convection, air and dust are isolated from the internal ejector rod; the second limiting plate and the externally extending ejector rod cylinder are detachably connected by threads, which facilitates the replacement or repair of the ejector rod cylinder, and also provides a firm connection between the ejector rod cylinder and the second limiting plate.

[0019] Preferably, the ejector rod cylinder extending outward from the second limiting plate is provided with an internally threaded hole, and the nominal diameter of the internal thread is equal to or smaller than the nominal diameter of the internal thread of the second limiting plate, which is used to match the threaded connection of the ejector rod with different diameters at one end, thereby providing additional fastening force or adjustment space to meet specific welding requirements.

[0020] Preferably, the end face of the end of the ejector rod connected to the welding workpiece is provided with a non-slip pad, which can further improve the stability of clamping, so that the base can be erected, inclined or turned over for special needs of welding.

[0021] Preferably, the design of the slot holes on both sides of the second limiting plate makes the cavity welding device more flexible in adjusting the connection point between the second limiting plate and the base, and can adjust the position of the ejector rod in a single direction and a single point, thereby better adapting to cavities of different sizes and improving the versatility and flexibility of the device.

[0022] Preferably, the base is made of aluminum metal, which has good thermal conductivity and corrosion resistance, can simultaneously heat and weld multiple welding components through the base, and can be cooled and radiated synchronously after completion, ensuring the consistency and stability of welding; the aluminum material is also relatively light in weight, which is convenient for carrying and installation. The first and second limiting plates and the ejector rod are made of heat-conducting materials, which can provide clamping while maintaining good thermal conductivity. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings described herein are for illustrative purposes only and do not limit the scope of the present utility model disclosure in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the utility model, and are not specific limitations on the shapes and proportions of the components. In the drawings:

[0024] Figure 1 Figure 2 is a top view of the cavity welding device described in Example 1;

[0025] Figure 2 Figure 3 is a top view of the upper portion of the cavity welding device described in Example 1;

[0026] Figure 3 Figure 4 is a top view of the lower portion of the cavity welding device described in Example 1;

[0027] Figure 4 Figure 5 is a top view of the cavity welding device described in Example 1 in use;

[0028] Wherein, 1. base, 2. slot hole, 3. cover plate, 4. lower heating rod, 5. upper limit plate, 6. upper top rod, 7. upper top rod cylinder, 8. left limit plate, 9. left top rod, 10. right limit plate, 11. first connecting hole, 12. second connecting hole, 13. first spring, 14. second spring, 15. first welding workpiece, 16. second welding workpiece, 17. third welding workpiece, 18. left top rod cylinder, 19. lower limit plate, 20. third connecting hole. DETAILED DESCRIPTION

[0029] In order to make the technical personnel in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. As used herein the terms "vertical", "horizontal", "left", "right", and the like are merely for purposes of illustration and are not intended to be limiting.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] EMBODIMENT

[0033] As shown in Figure 1 A cavity welding device, comprising a base 1, an upper limit plate 5, a lower limit plate 19, a left limit plate 8, a right limit plate 10, two top rods, three springs, a cover plate 3 and two top rod cylinders. The materials of the limit plate, top rod and spring are all heat-conducting materials, which can be selected from alumina, boron nitride or carbon fiber.

[0034] As shown in Figure 1 The right limit plate 10 is not provided with corresponding top rod, top rod cylinder, spring and cover plate, which is used for the reference fixation positioning of the right side. The right limit plate 10 is fixed on the base 1 through the first connecting hole 11 on the base 1 by M2x5 cross slot pan head screw.

[0035] As shown in Figure 2 The upper limit plate 5 is provided with corresponding upper top rod 6, first spring 13 and upper top rod cylinder 7, and the upper top rod 6 extends into the inner groove of the upper top rod cylinder 7 through the upper limit plate 5. The design of the top rod cylinder is used to accommodate and protect the top rod, so as to ensure that the external heat convection, air and dust are isolated from the internal top rod. The upper top rod cylinder is threadedly connected with the upper limit plate 5; the upper top rod 6 is divided into two sections, the thicker section is threadedly connected with the upper limit plate 5, and the thinner section is threadedly connected with the upper top rod cylinder. Multiple threaded connections are mainly used to increase the surface area to overcome thermal expansion and contraction and ensure the heat transfer efficiency.

[0036] The upper part of the base 1 is provided with a second connecting hole 12; the upper limit plate 5 is connected with the base 1 by two M2x16 cross slot pan head screws. The upper limit plate 5 has an outwardly extending upper top rod cylinder 7, the outwardly extending end of the upper top rod cylinder 7 is radially thickened, and the thickened section can be sleeved with a heat insulation pad outside, which is convenient for gripping and operating. The upper top rod cylinder 7 is internally provided with an upper top rod 6, one end of the upper top rod 6 extends into the groove provided in the upper top rod cylinder 7 for coaxial positioning, and the other end of the upper top rod 6 is connected with the upper limit plate 5 through the first spring 13, so as to adjust the clamping space by means of the extension and contraction of the first spring 13.

[0037] The design of the left limit plate 8 is similar to that of the upper limit plate 5, and is provided with a left top rod 9, a left top rod cylinder 18 and a spring. The left limit plate 8 is connected with the base 1 by two M2x16 cross slot pan head screws. The left limit plate 8 has an outwardly extending top rod cylinder, the outwardly extending end of the left top rod cylinder 18 is radially thickened, and the thickened section can be sleeved with a heat insulation pad outside, which is convenient for gripping and operating. The left top rod cylinder 18 is internally provided with a left top rod 9, one end of the left top rod 9 extends into the groove provided in the left limit plate 8 and the left top rod cylinder 18 for coaxial positioning, and the other end of the left top rod 9 is connected with the left limit plate 8 through the spring, so as to adjust the clamping space. The end of the left top rod connecting spring is in contact with the first welding workpiece 15 and the third welding workpiece 17 to heat them.

[0038] As shown in Figure 3 The lower limit plate 19 is designed differently from the upper limit plate 5. The lower limit plate 19 is connected to the base 1 through the slot hole 2. Two M2x16 cross slot pan head screws pass through the slot hole 2. The relative position between the lower limit plate 19 and the base 1 is adjusted by moving the lower limit plate 19. The cover plate 3 is connected to the lower limit plate 19 through the third connecting hole 20 provided on the lower limit plate 19, which is used to support the extrusion of the second spring 14 on the lower heating rod 4. One end of the lower heating rod 4 extends out of the lower limit plate 19, which is used to extend into the second welding workpiece 16 and the third welding workpiece 17 for heating. The other end of the lower heating rod 4 is connected to the cover plate 3 through the second spring 14. The material of the heating rod is a heat-conducting material, which can be selected from aluminum oxide, boron nitride, or carbon fiber.

[0039] In summary, the welding device adjusts the ejector rod and the spring in three directions other than one direction as a reference, which can adapt to cavities of different sizes, realize flexible and stable planar clamping of cavities of different shapes and sizes, and facilitate welding operation. The spring forces in the three directions are consistent, which makes the device use the spring to reduce the difference in clamping force in each direction and improve the consistency of product welding.

[0040] Meanwhile, the base 1 of the embodiment integrally heats the welding components, synchronously transfers heat, melts the solder rings on the parts in different spaces, and completes the sealing of the cavity by tightly fitting between the base and the welding components, which increases the air tightness qualification rate and improves the reliability, efficiency, and quality of welding. These designs not only improve work efficiency but also reduce construction difficulty and cost, thereby improving safety and bringing a broader development prospect to the welding process.

[0041] The materials of the base 1, the limit plate, the ejector rod, and the cover plate in the embodiment are all aluminum alloy materials. Because of its good thermal conductivity, it can synchronously heat and weld multiple welding components through the base 1, complete synchronous cooling and heat dissipation after welding, and help reduce the risk of deformation or damage of the base due to local overheating, thereby improving the service life and stability of the base. Aluminum has good corrosion resistance. In most environments, aluminum can form a strong oxide film, which can effectively prevent further corrosion of aluminum materials, so that it can maintain good performance in humid or corrosive environments. Aluminum materials also have relatively small density and relatively light weight, which is convenient for transportation and installation. In addition, aluminum has good processability. The use of aluminum alloy materials ensures the consistency and stability of welding.

[0042] As shown in Figure 4The new technical principle used in the present application is that the product is positioned by the welding base 1, so as to ensure that the first welding workpiece 15, the second welding workpiece 16 and the third welding workpiece 17 can be welded under the same heating condition, and the product welding consistency is ensured. The welding process is that the welding workpieces are placed in the relative positions of the welding assembly, then the soldering rings are placed at the relative positions of the welding workpieces, the welding base 1 is used to position the welding workpieces of the product, and finally the product is placed on the heating table. Through heat conduction, the soldering rings are melted, so that the welding workpieces are welded with the shell of the welding assembly. The welded welding workpieces are connected in series through gold wire bonding, so as to ensure normal transmission of signals.

[0043] When selecting the heating table welding, the temperature of the heating table is adjusted, and then the temperature and time are controlled by using the previous test parameters. The product device is only placed on the heating table, and the device is taken out after the heating time, and then the product is naturally cooled. Different materials have different sensitivities to temperature, and too high or too low temperature may affect the welding quality, such as causing component damage, unstable welding or thermal stress problems. The heating time is set to ensure that the ideal welding temperature is maintained for a sufficient time to complete the welding process, while avoiding long-time heating to cause material degradation. The device with the to-be-welded product is stably placed on the heating table, and all parts that need to be welded are uniformly heated. Appropriate clamps or supports are used to prevent the product from moving or deforming during heating. The heating table welding is suitable for small batch, rapid prototyping or simple structure welding, with low cost and high flexibility.

[0044] The vacuum reflow soldering can also be selected. The product is fixed in the device, and then placed in the vacuum reflow soldering. The welding temperature and time are set, and the device is taken out after the waiting time, and then the product is naturally cooled. The product is carefully fixed in the specially designed device to ensure that all welding points are correctly aligned and not disturbed by external forces. This usually involves the use of precision clamps and positioning tools. According to the specific requirements of the product and the material characteristics, the appropriate welding temperature and time curve are set in the vacuum reflow soldering machine. The vacuum environment helps to reduce oxidation and improve welding quality. The vacuum reflow soldering is more suitable for high-quality electronic product production, complex structure or high-reliability welding, especially for oxidation-sensitive or air bubble-free welding occasions.

[0045] The advantages of the embodiment are summarized as follows:

[0046] By improving the welding process and equipment, the quality and reliability of welding are improved, the defective rate is reduced, the production cost is reduced, the market competitiveness of products is improved, the production efficiency is improved, the production cycle and cost are reduced, the safety of operators is improved, the risk of accidents is reduced, and the market competitiveness of special products is met. In short, the purpose of the innovation of the cavity electrical connector welding is to improve the welding quality, reduce the cost, improve the production efficiency, improve the safety, and meet the special requirements, so as to improve the market competitiveness of products and meet the requirements of special application occasions.

[0047] The above embodiment is only one of the implementation manners capable of realizing the technical scheme of the utility model, and the scope of the utility model claimed for protection is not limited by the embodiment, but also includes any changes, substitutions and other implementation manners easily thought of by any person skilled in the art within the technical scope disclosed by the utility model. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity welding device, characterized in that, It includes a base (1), a first limiting plate, several second limiting plates, several heating rods, several springs and several cover plates (3); The first limiting plate is provided on the base (1) and is threadedly connected to the base (1); The second limiting plate is provided on the base (1) and is threadedly connected to the base (1). The second limiting plate is arranged opposite to or adjacent to the first limiting plate, and together they form a planar clamping and fixing of the welded workpiece. At least one heating rod passes through a through hole provided in the second limiting plate, and one end is connected to the welding workpiece placed on the base (1), and the other end is connected to the cover plate (3) by a spring; At least one of the extended base cover plates (3) is threadedly connected to the second limiting plate to support the spring pressing on the heating rod.

2. The cavity welding device according to claim 1, characterized in that, It also includes several push rods and push rod cylinders; at least one push rod passes through a through hole provided in the second limiting plate, and one end of the push rod is set in the push rod cylinder extending out of the second limiting plate, and the other end is connected to the second limiting plate by a spring, which is used to assist the push rod in adjusting the clamping allowance.

3. The cavity welding device according to claim 2, characterized in that, The through hole in the second limiting plate is provided with a first thread, which is threaded to the push rod cylinder that extends outward.

4. The cavity welding device according to claim 2, characterized in that, The through hole in the second limiting plate is provided with a second thread, which is connected to the push rod thread.

5. The cavity welding device according to claim 2, characterized in that, At least one of the push rod cylinders is provided with a hole, and a third thread is provided in the hole for threaded connection with the push rod; the nominal diameter of the third thread is equal to or less than the nominal diameter of the first thread.

6. The cavity welding device according to claim 2, characterized in that, An anti-slip pad is provided at one end of the top rod that connects to the welding workpiece.

7. The cavity welding device according to claim 1, characterized in that, At least one of the second limiting plates has slots (2) on both sides for adjusting the relative position between the second limiting plate and the base (1).

8. The cavity welding device according to claim 1, characterized in that, The base (1) is made of aluminum.

9. The cavity welding device according to claim 1, characterized in that, The heating rods are all made of thermally conductive materials.

10. A cavity welding device according to claim 1, characterized in that, The first limiting plate, the second limiting plate, the top rod, and the spring are all made of thermally conductive materials.

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