A welding tray for avoiding cold welding

Abstract

The present invention relates to the field of production and processing technology, specifically to a welding tray for avoiding cold welding, including a heating table, a tray body slidably connected in the sliding cavity, a high temperature resistant powder laid on the tray body, and also including: a lifting component to change the distance between the tray body and the heating table; a driving component to enable the lifting component to push the tray body to move; a heat conducting component to conduct the temperature of the heating table to the tray body. The present invention changes the heating distance between the tray body and the heating table by setting a lifting component, a guide component and a driving component, and at the same time cooperates with the heat conducting component to increase the heating rate, so that the solder paste at each position under the same temperature condition is heated evenly, shortens the time for the solder paste to melt, and avoids the occurrence of cold welding.

Description

Technical Field

[0001] The invention relates to the technical field of production and processing, in particular to a welding tray for avoiding cold welding. Background Art

[0002] In the production welding process, welding molds are usually required to fix the position of the product. However, in the welding process, cold welding is prone to occur, resulting in the solder paste not being completely melted after welding, the tensile strength values ​​of each terminal not meeting the standards, and the welding is not firm, and finally rework is required.

[0003] The existing authorization announcement number CN203827615U discloses a welding pallet, including a pallet frame and a supporting device; the supporting device includes a supporting component and an adjustable connecting component: the supporting component includes a supporting surface; the adjustable connecting component connects the supporting component to the side of the pallet frame, and the height difference between the supporting surface and the bearing surface of the pallet frame is adjustable.

[0004] The above technology effectively improves the quality of the welding workpiece by adjusting the height difference between the support surface of the support device and the bearing surface of the tray frame. However, when the tray frame is placed on the heating table and used for welding, the distance between it and the heating table is fixed. However, during welding, the distance between the heating table and the tray is too thick, so that the heating table cannot quickly transfer the temperature to the tray, resulting in insufficient peak temperature of the tray welding, and finally leading to too long welding preheating time, so that the solder paste on the tray cannot be heated evenly, and finally completely melts, resulting in cold welding. In view of this, we propose a welding tray that avoids cold welding. Summary of the invention

[0005] In order to make up for the above deficiencies, the present invention provides a welding tray for avoiding cold welding.

[0006] The technical solution of the present invention is:

[0007] A welding tray for avoiding cold welding comprises a heating platform, a fixed seat is fixedly installed above the heating platform, a sliding cavity is arranged in the fixed seat, the sliding cavity is communicated with the heating platform, a sliding groove is opened on one side of the fixed seat, a tray body is slidably connected in the sliding cavity, and high temperature resistant powder is laid on the tray body, and further comprises:

[0008] A lifting component, which moves vertically along the inside of the sliding cavity and is respectively connected to the heating platform and the tray body through four guide components, so that the distance between the tray body and the heating platform changes;

[0009] A driving component, the driving component moves horizontally along the inside of the slide slot and is connected to the lifting component so that the lifting component can push the tray body to move;

[0010] A heat-conducting component shrinks as the tray body rises and falls, and is disposed inside the sliding cavity to transfer the temperature of the heating platform to the tray body.

[0011] Furthermore, the lifting component comprises:

[0012] Two left-right symmetrical sliding blocks 1 and two left-right symmetrical sliding blocks 2, each of the sliding blocks 1 and 2 maintains front-to-back symmetry, each of the sliding blocks 1 and 2 is fixedly connected with a connecting shaft 1, and each of the sliding blocks 1 and 2 is slidably connected to the heating platform.

[0013] Furthermore, a fixed block 1 is disposed above each of the sliding blocks 1, and a fixed block 2 is disposed above each of the sliding blocks 2, and a connecting shaft 2 is fixedly connected between each of the fixed blocks 1 and 2.

[0014] Furthermore, the upper end of each of the fixing blocks 1 and 2 is fixedly connected to the bottom of the tray body.

[0015] Furthermore, connecting rod 1 and connecting rod 2 are arranged between the two sliding blocks 1 and the two fixed blocks 1, and between the two sliding blocks 2 and the two fixed blocks 2, and the two ends of the connecting rod 1 are respectively movably connected to the connecting shaft 1 on the left and the connecting shaft 2 on the right.

[0016] Furthermore, the two ends of the connecting rod 2 are respectively movably connected to the connecting shaft 2 on the left and the connecting shaft 1 on the right, and a movable shaft is provided in the middle of the connecting rod 2 and the connecting rod 1. The connecting rod 2 and the connecting rod 1 are movably connected on the movable shaft, and the connection between the connecting rod 2 and the connecting rod 1 is a cross structure.

[0017] Furthermore, each of the guide components comprises:

[0018] A U-shaped connecting seat is fixedly installed on the heating table, and the positioning rod and the connecting frame are fixedly connected to the U-shaped connecting seat. The positioning rod passes through the U-shaped connecting seat and the connecting frame, and the protruding end of the positioning rod is slidably sleeved with a sliding rod.

[0019] Furthermore, the connecting frame and the sliding rod are arranged inside the fixing seat, and a spring is fixedly connected to the connecting frame, and the upper end of the spring is fixedly connected to the bottom of the sliding rod.

[0020] Furthermore, the upper end of the sliding rod passes through the connecting frame and the fixing seat in sequence and extends above the fixing seat, and the sliding rod is slidably connected to the connecting frame and the fixing seat.

[0021] Furthermore, connecting blocks are fixedly installed around the tray body, and each of the connecting blocks is fixedly connected to the protruding end of the sliding rod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In order to make the solder paste heated evenly, the present invention lays high temperature resistant powder on the tray body, which can play a role in heat transfer, so that the temperature at each position of the welding tray can be basically consistent, so that the solder paste can be completely melted.

[0024] 2. In order to avoid the occurrence of cold welding, the present invention changes the heating distance between the tray body and the heating platform by setting a lifting component, a guiding component and a driving component, which is equivalent to thinning the thickness of the tray body to different degrees, so that the solder paste at each position is heated evenly under the same temperature conditions, shortening the melting time of the solder paste, making it completely melted, avoiding cold welding, and is suitable for welding a variety of workpieces.

[0025] 3. In order to improve the temperature rise rate between the welding tray and the heating table, the present invention sets a heat-conducting component to quickly transfer the temperature of the heating table to the welding tray, so that the welding tray can quickly receive the temperature of the heating table, thereby shortening the temperature rise time and extending the heating time during welding. At the same time, the thickness of the tray body can also be shrunk as the tray body is raised and lowered, thereby reducing the contact thickness between the tray body and the heating table and avoiding cold welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is an exploded view of the overall structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the heating platform structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the lifting component of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the guide component of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the driving component of the present invention;

[0032] Figure 7 This is a schematic diagram of the fixing seat structure of the present invention (vertical placement perspective);

[0033] Figure 8 It is a schematic diagram of the structure of the tray body of the present invention;

[0034] Fig. 9It is an exploded view of the heat conducting component of the present invention.

[0035] In the figure:

[0036] 1. Heating table; 11. Lifting component; 111. Sliding block 1; 112. Connecting shaft 1; 113. Sliding block 2; 114. Fixed block 1; 115. Connecting shaft 2; 116. Fixed block 2; 117. Connecting rod 1; 118. Connecting rod 2; 12. Guide component; 121. U-shaped connecting seat; 122. Positioning rod; 123. Spring; 124. Connecting frame; 125. Sliding rod; 13. Driving component; 131. Bidirectional screw; 132. Moving block; 133. Servo motor;

[0037] 2. Fixed seat; 21. Sliding cavity; 22. Sliding groove;

[0038] 3. Tray body; 31. Connecting block;

[0039] 4. Heat-conducting component; 41. Thermal grease layer; 42. Through hole; 43. Graphite hemispherical particles; 44. Foam layer; 45. Graphite sheet; 46. Adhesive layer. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] See also Figure 1-9 The present invention describes the above technical solution in detail through the following embodiments:

[0043] A welding tray for avoiding cold welding, comprising:

[0044] A heating table 1 is provided with a fixed seat 2 fixedly installed above the heating table 1, a sliding cavity 21 is provided in the fixed seat 2, the sliding cavity 21 is communicated with the heating table 1, and a slide groove 22 is provided on one side of the interior of the fixed seat 2, a tray body 3 is slidably connected in the sliding cavity 21, and high temperature resistant powder is spread on the tray body 3, and connecting blocks 31 are fixedly installed around the tray body 3, and each connecting block 31 is fixedly connected to the protruding end of the sliding rod 125.

[0045] It is worth mentioning that the high temperature resistant powder can play a role in heat transfer, so that the temperature at various positions of the welding tray can be basically consistent. At the same time, a thermometer is provided on the tray body 3, and its temperature rise can be observed at any time.

[0046] In this embodiment, in order to make the tray body 3 heated evenly, a fixed seat 2 is provided on the heating table 1, and a sliding cavity 21 is provided in the fixed seat 2, and the sliding cavity 21 is communicated with the heating table 1, so that the temperature of the heating table 1 can be concentrated from the sliding cavity 21 to heat the tray body 3, and combined with the high temperature resistant powder on the tray body 3, the temperature at each position of the welding tray can be made basically consistent, thereby improving the heating rate.

[0047] The lifting component 11 moves vertically along the inside of the sliding cavity 21, and is connected to the heating platform 1 and the tray body 3 respectively through four guide components 12, so that the distance between the tray body 3 and the heating platform 1 changes. The lifting component 11 includes: two left-right symmetrical sliding blocks 111 and two left-right symmetrical sliding blocks 2 113, each sliding block 111 and the sliding block 2 113 maintain front-to-back symmetry, each sliding block 111 and the sliding block 2 113 are fixedly connected with a connecting shaft 112, and each sliding block 111 and the sliding block 2 113 are slidably connected to the heating platform 1, and a fixed block 114 is arranged above each sliding block 111, and each A fixed block 2 116 is arranged above each sliding block 113, a connecting shaft 2 115 is fixedly connected between each fixing block 1 114 and the fixing block 2 116, and the upper ends of each fixing block 1 114 and the fixing block 2 116 are fixedly connected to the bottom of the tray body 3, a connecting rod 1 117 and a connecting rod 2 118 are arranged between the two sliding blocks 111 and the two fixing blocks 1 114, and between the two sliding blocks 2 113 and the two fixing blocks 2 116, and the two ends of the connecting rod 1 117 are movably connected to the left connecting shaft 1 12 and the right connecting shaft 2 115 respectively, and a connecting rod 1 117 and a connecting rod 2 118 are arranged between the two sliding blocks 111 and the two fixing blocks 1 114, and between the two sliding blocks 2 113 and the two fixing blocks 2 116. A connecting rod 117 and a connecting rod 2 118 are arranged, and the two ends of the connecting rod 117 are movably connected to the left connecting shaft 112 and the right connecting shaft 2 115 respectively, and the two ends of the connecting rod 2 118 are movably connected to the left connecting shaft 2 115 and the right connecting shaft 1 12 respectively. A movable shaft is arranged in the middle of the connecting rod 2 118 and the connecting rod 1 117, and the connecting rod 2 118 and the connecting rod 1 117 are movably connected to the movable shaft, and the connection between the connecting rod 2 118 and the connecting rod 1 117 is a cross structure; each guide component 12 includes: a U-shaped connecting seat 121, the U-shaped connecting seat 121 is fixedly installed on the heating table 1, and the U-shaped connecting seat 121 is fixedly connected to a positioning rod 122 and a connecting frame 124, The positioning rod 122 passes through the U-shaped connecting seat 121 and the connecting frame 124, and the sliding rod 125 is slidably sleeved on the protruding end of the positioning rod 122. The connecting frame 124 and the sliding rod 125 are arranged inside the fixed seat 2, and a spring 123 is fixedly connected to the connecting frame 124. The upper end of the spring 123 is fixedly connected to the bottom of the sliding rod 125. The upper end of the sliding rod 125 passes through the connecting frame 124 and the fixed seat 2 in turn, and extends to the top of the fixed seat 2, and the sliding rod 125 is slidably connected to the connecting frame 124 and the fixed seat 2; the driving component 13 moves horizontally along the inside of the slide groove 22 and is connected to the lifting component 11, so that the lifting component 11 can push the tray body 3 to move.

[0048] It should be noted that the driving component 13 includes: a bidirectional screw 131, both ends of which are rotatably connected to the side walls of the slide groove 22, one end of the bidirectional screw 131 is fixedly connected to a servo motor 133, the servo motor 133 is fixedly installed on the fixed seat 2, and the bidirectional screw 131 is provided with two opposite threads, and the two opposite threads of the bidirectional screw 131 are both threadedly connected with moving blocks 132, each moving block 132 is fixedly connected to each sliding block 111, and each moving block 132 is slidably connected to the inside of the slide groove 22.

[0049] In this embodiment, in order to avoid the occurrence of cold welding, the bidirectional screw 131 is driven to rotate by starting the servo motor 133. Since the bidirectional screw 131 is provided with two opposite threads, and the two opposite threads are threadedly connected with the moving blocks 132, when the bidirectional screw 131 rotates, the two moving blocks 132 can be driven to move in opposite directions. At this time, the two moving blocks 132 can drive the two sliding blocks 111 and the two sliding blocks 113 to move in opposite directions on the heating table 1. Since the two sliding blocks 111 and the two sliding blocks 113 are movably connected to the connecting rod 1 117 and the connecting rod 2 118 connected in a cross structure through the connecting shaft 1 112, and the other ends of the connecting rod 1 117 and the connecting rod 2 118 are movably connected to the connecting shaft 2 115, and the connecting shaft 2 115 is connected to the bottom of the tray body 3 through the fixed block 114 and the fixed block 2 116, the relative movement of the sliding blocks 111 and the sliding blocks 113 is improved. The movement of the tray body 3 can push the connecting rod 1 117 and the connecting rod 2 118 connected in a cross structure to rise and fall, thereby driving the tray body 3 to rise and fall in the sliding cavity 21. Since the tray body 3 is connected on all sides by the connecting block 31 and the sliding rod 125, and the sliding rod 125 is limited by the positioning rod 122 and the spring 123, the tray body 3 can be stably lifted and lowered to ensure that the moving spacing is consistent, thereby changing the heating spacing between the tray body 3 and the heating table 1, which is equivalent to thinning the thickness of the tray body 3 to varying degrees. From the test data in the table, it can be seen that the 6.2mm spacing is much lower than the 10mm spacing in the heating time. Therefore, the thinning of the welding tray can be reflected by changing the spacing, which is equivalent to increasing the set temperature and extending the heating time, so that the solder paste at each position is heated evenly under the same temperature conditions, shortening the melting time of the solder paste, making it completely melted, avoiding cold welding, and is suitable for welding a variety of workpieces.

[0050] The following table is the simulation experiment test data of the present invention:

[0051]

[0052] The heat-conducting component 4 contracts as the tray body 3 rises and falls, and is disposed inside the sliding cavity 21 , so that the temperature of the heating platform 1 is transferred to the tray body 3 .

[0053] It should also be noted that the heat-conducting component 4 includes: a thermal grease layer 41, a plurality of through holes 42 are opened in the thermal grease layer 41, and foam layers 44 are bonded to the upper and lower ends of the thermal grease layer 41, and a plurality of graphite hemispherical particles 43 are fixedly connected in the two foam layers 44, and the graphite hemispherical particles 43 in the two foam layers 44 are kept facing each other and are respectively located on both sides of the through hole 42 without contacting the inner wall of the through hole 42, and a graphite sheet 45 is bonded to the outer side of each foam layer 44, and an adhesive layer 46 is provided on the surface of the two graphite sheets 45, and the two graphite sheets 45 are respectively connected to the bottom of the tray body 3 and the heating table 1 through the adhesive layer 46.

[0054] In this embodiment, in order to increase the temperature rise rate between the welding tray and the heating table 1, the upper and lower graphite sheets 45 are used to efficiently conduct heat, and the temperature of the heating table 1 is quickly transferred to the welding tray, so that the welding tray can always quickly receive the temperature of the heating table 1, thereby shortening the heating time and extending the heating time during welding. At the same time, two foam layers 44 and a thermal grease layer 41 are used. Since they have elasticity and plasticity, they can cooperate with the reserved gaps between the through holes 42 and a number of graphite hemispherical particles 43, so that the entire heat-conducting component 4 not only has the performance of efficient heat conduction, but also can shrink its thickness as the tray body 3 rises and falls, thereby reducing the contact thickness between the tray body 3 and the heating table 1, and avoiding cold welding.

[0055] When used specifically, firstly, a fixing seat 2 is arranged on the heating platform 1, and a sliding cavity 21 is arranged in the fixing seat 2, and the sliding cavity 21 is connected with the heating platform 1, so that the temperature of the heating platform 1 can be concentrated from the sliding cavity 21 to heat the tray body 3, and then cooperate with the high temperature resistant powder on the tray body 3, so that the temperature at each position of the welding tray can be basically consistent;

[0056] Next, by starting the servo motor 133 to drive the bidirectional screw 131 to rotate, the bidirectional screw 131 can drive the two moving blocks 132 to move in opposite directions. At this time, the two moving blocks 132 can drive the two sliding blocks 111 and the two sliding blocks 113 to move in opposite directions on the heating table 1, which can push the connecting rod 117 and the connecting rod 2 118 connected in a cross structure to rise and fall, thereby driving the tray body 3 to rise and fall in the sliding cavity 21. Since the tray body 3 is connected to the sliding rod 125 on all sides through the connecting block 31, and the sliding rod 125 is limited by the positioning rod 122 and the spring 123, the The tray body 3 is stably lifted and lowered to ensure that the moving spacing is consistent, so that the heating spacing between the tray body 3 and the heating table 1 can be changed, which is equivalent to thinning the thickness of the tray body 3 to different degrees. However, from the test data in the table, it can be seen that the 6.2mm spacing is much lower than the 10mm spacing in the heating time. Therefore, the welding tray can be thinned by changing the spacing, which is equivalent to increasing the set temperature and extending the heating time, so that the solder paste at each position is heated evenly under the same temperature condition, shortening the melting time of the solder paste, making it completely melted, and suitable for welding a variety of workpieces;

[0057] At the same time, during the heating process, the temperature of the heating table 1 can be quickly transferred to the welding tray by using the upper and lower graphite sheets 45 for efficient heat conduction, so that the welding tray can always quickly receive the temperature of the heating table 1, thereby shortening the heating time and extending the heating time during welding. At the same time, two foam layers 44 and a thermal grease layer 41 are used. Due to their elasticity and plasticity, they can cooperate with the gaps reserved between the through holes 42 and a number of graphite hemispherical particles 43, so that the entire heat-conducting component 4 not only has the performance of efficient heat conduction, but also can shrink its thickness as the tray body 3 rises and falls, thereby reducing the contact thickness between the tray body 3 and the heating table 1, and avoiding the occurrence of cold welding.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding tray for avoiding cold welding, comprising a heating platform (1), a fixed seat (2) fixedly installed above the heating platform (1), a sliding cavity (21) provided in the fixed seat (2), the sliding cavity (21) and the heating platform (1) are connected, and a sliding groove (22) is provided on one side of the fixed seat (2), a tray body (3) is slidably connected in the sliding cavity (21), and a high temperature resistant powder is laid on the tray body (3), It is characterized in that Also includes: A lifting component (11), wherein the lifting component (11) moves vertically along the inside of the sliding cavity (21), and is respectively connected to the heating platform (1) and the tray body (3) through four guide components (12), so that the distance between the tray body (3) and the heating platform (1) changes; the lifting component (11) comprises: two left-right symmetrical sliding blocks (111) and two left-right symmetrical sliding blocks (113), each of the sliding blocks (111) and the sliding blocks (113) maintains front-to-back symmetry, each of the sliding blocks (111) and the sliding blocks (113) is fixedly connected with a connecting shaft (112), and each of the sliding blocks (111) and the sliding blocks (113) is slidably connected to the heating platform (1); each of the guide components (12) comprises: a U-shaped connecting seat (121), The U-shaped connecting seat (121) is fixedly installed on the heating platform (1), and a positioning rod (122) and a connecting frame (124) are fixedly connected to the U-shaped connecting seat (121), the positioning rod (122) passes through the U-shaped connecting seat (121) and the connecting frame (124) above, and a sliding rod (125) is slidably sleeved on the protruding end of the positioning rod (122), the connecting frame (124) and the sliding rod (125) are arranged inside the fixed seat (2), and a spring (123) is fixedly connected to the connecting frame (124), the upper end of the spring (123) and the bottom of the sliding rod (125) are fixedly connected, the upper end of the sliding rod (125) passes through the connecting frame (124) and the fixed seat (2) in sequence, and extends to the top of the fixed seat (2), and the sliding rod (125) is slidably connected to the connecting frame (124) and the fixed seat (2); A driving component (13), wherein the driving component (13) moves horizontally along the interior of the slide groove (22) and is connected to the lifting component (11), so that the lifting component (11) can push the tray body (3) to move; A heat-conducting component (4) which shrinks as the tray body (3) rises and falls and is arranged inside the sliding cavity (21) so that the temperature of the heating platform (1) is transferred to the tray body (3).

2. The welding tray for avoiding cold welding as claimed in claim 1, Features: A fixed block 1 (114) is disposed above each sliding block 1 (111), and a fixed block 2 (116) is disposed above each sliding block 2 (113), and a connecting shaft 2 (115) is fixedly connected between each fixed block 1 (114) and fixed block 2 (116).

3. The welding tray for avoiding cold welding as claimed in claim 2, Features: The upper end of each of the fixing blocks 1 (114) and 2 (116) is fixedly connected to the bottom of the tray body (3).

4. The welding tray for avoiding cold welding as claimed in claim 3, Features: A connecting rod 1 (117) and a connecting rod 2 (118) are provided between the two sliding blocks 1 (111) and the two fixed blocks 1 (114) as well as between the two sliding blocks 2 (113) and the two fixed blocks 2 (116), and the two ends of the connecting rod 1 (117) are movably connected to the connecting shaft 1 (112) on the left side and the connecting shaft 2 (115) on the right side, respectively.

5. The welding tray for preventing cold welding according to claim 4, Features: The two ends of the second connecting rod (118) are movably connected to the second connecting shaft (115) on the left and the first connecting shaft (112) on the right, respectively; a movable shaft is provided in the middle of the second connecting rod (118) and the first connecting rod (117); the second connecting rod (118) and the first connecting rod (117) are movably connected on the movable shaft, and the connection between the second connecting rod (118) and the first connecting rod (117) is a cross structure.

6. The welding tray for preventing cold welding according to claim 1, Features: Connecting blocks (31) are fixedly installed around the tray body (3), and each of the connecting blocks (31) is fixedly connected to the protruding end of the sliding rod (125).

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