High-precision tray for dispensing tin

Abstract

The utility model discloses a high-precision tray for dispensing tin, which is characterized in that the tray comprises a shell (1), a lifting cylinder (2) is arranged in the shell (1), the top end of an output shaft of the lifting cylinder (2) is connected with a magnet lifting plate (4) through a bracket (3), guide rods (5) are arranged at four corners of the bottom end face of the magnet lifting plate (4), and the guide rods (5) are movably connected with guide sleeves (6) arranged in the shell (1). A plurality of connecting blocks (7) distributed in an array mode are arranged on the bottom end face of the magnet lifting plate (4), a pair of magnets (8) is arranged at the top end of each connecting block (7), and the upper half portions of the magnets (8) penetrate through openings formed in the magnet lifting plate (4) and are located on the top end face of the magnet lifting plate (4).

Description

Technical Field

[0001] The utility model relates to a positioning jig, in particular to a high-precision tray for tinning. Background Art

[0002] With the rapid development of electronic products, their size is shrinking, and as a result, the requirements for precise soldering position during soldering processes are becoming increasingly stringent. Conventional soldering trays, which directly position the workpiece, typically have thicker positioning plates. The thicker the material, the more difficult it is to ensure machining accuracy. Therefore, conventional positioning plates are no longer able to meet the positional accuracy requirements of high-precision soldering processes. To improve soldering accuracy, a vision system has traditionally been added, but this significantly increases the cost of the process.

[0003] Furthermore, when a large number of products need to be soldered at once, vacuum suction is difficult to implement under the working conditions that require suction due to the relatively dense arrangement of these products. This is because the products are placed one by one, and if a separate vacuum suction circuit is set up for each product, the entire air circuit cannot be arranged in a small space. As a result, the overall size of the soldering tray with vacuum suction function is relatively large.

[0004] Therefore, a method or device that can solve the above problems is needed. Summary of the Invention

[0005] The utility model aims to solve the above-mentioned deficiencies in the prior art and proposes a tinning tray with a simple structure, ingenious design, low cost, and the ability to realize adsorption function under the premise of effectively controlling the volume and realize high-precision tinning operation.

[0006] The technical solution of the present utility model is: a high-precision tray for tinning, characterized in that: the tray includes a shell 1, a lifting cylinder 2 is provided in the shell 1, the top end of the output shaft of the lifting cylinder 2 is connected to the magnet lifting plate 4 through a bracket 3, and guide rods 5 are provided at the four corners of the bottom end surface of the magnet lifting plate 4. The guide rods 5 are movably connected to the guide sleeve 6 provided in the shell 1, and a plurality of array-distributed connecting blocks 7 are provided on the bottom end surface of the magnet lifting plate 4. A pair of magnets 8 are provided on the top of each connecting block 7, and the upper half of the magnet 8 passes through the opening provided on the magnet lifting plate 4 and is located at the top surface of the magnet lifting plate 4.

[0007] A top plate 9 is provided at the top opening of the housing 1. Two pairs of rotating pressing blocks 10 are provided on the top plate 9. The rotating pressing blocks 10 are in the shape of cubes with rectangular cross sections. The rotating pressing blocks 10 are rotatably connected to the top plate 9 via a rotating shaft. A plurality of magnet receiving holes 11 are provided on the top plate 9. The magnet receiving holes 11 correspond one-to-one to the top ends of the magnets 8.

[0008] The tray also includes a high-precision carrier plate 12, which is provided with a plurality of pressing block through holes 13 corresponding to the rotating pressing blocks 10. At the same time, positioning sleeves 14 are provided at both ends of the high-precision carrier plate 12, and the housing 1 is provided with positioning pins 15 that match the positioning sleeves 14.

[0009] The high-precision carrier plate 12 is composed of a bottom plate 16, a middle plate 17 and a top plate 18 connected to each other. The bottom plate 16 is provided with a plurality of through holes 19, and the plurality of through holes 19 correspond one-to-one with the plurality of magnet receiving holes 11. The middle plate 17 and the top plate 18 are provided with a plurality of limiting holes 23, and the plurality of limiting holes 23 correspond one-to-one with the plurality of through holes 19.

[0010] A material box 20 is provided on the side wall of the housing 1 , and the tray also includes a reversing valve 21 , which can control the working state of the lifting cylinder 2 .

[0011] The positioning sleeve 14 is connected to the high-precision carrier plate 12 via four bolts evenly distributed in the circumferential direction.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] This high-precision tinning tray has a simple structure, ingenious design, and reasonable layout. It addresses the problems of trays used in traditional tinning processes by designing a special structure. It uses a lifting cylinder to drive a magnet lifting plate to move longitudinally within a housing, allowing the array of magnets distributed on the magnet lifting plate to move toward or away from the workpiece. When the magnets approach the workpiece, the magnetic force they generate will attract and fix the workpiece to the high-precision carrier plate. In other words, the device's attraction to the workpiece can be changed by adjusting the height of the magnets.

[0014] The high-precision pallet used in this pallet is composed of three layers of interconnected plates. The limiting holes opened on the two upper plates and the bottom plate together form a positioning groove for accommodating the workpiece. Compared with the traditional method of directly processing the positioning groove on a relatively thick plate, this method and structure of forming the positioning groove can better control the processing accuracy, thereby ensuring the dimensional accuracy of the positioning groove and achieving high-precision positioning of the workpiece.

[0015] At the same time, since the positioning sleeve and the high-precision carrier are connected by bolts, this connection structure can be adjusted slightly in the horizontal direction, thereby compensating for the overall deviation of the high-precision carrier and further improving the positioning accuracy during the tinning operation.

[0016] Moreover, the manufacturing process of this pallet is simple and the manufacturing cost is low. Therefore, it can be said that it has multiple advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present utility model.

[0018] Figure 2 It is an exploded view of parts of an embodiment of the present utility model.

[0019] Figure 3 It is an exploded view of the parts of the high-precision carrier plate in the embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figure 1 、 Figure 2 、 Figure 3 As shown: A high-precision tray for tinning, which includes a shell 1, a lifting cylinder 2 is provided in the shell 1, the top end of the output shaft of the lifting cylinder 2 is connected to the magnet lifting plate 4 through a bracket 3, and guide rods 5 are provided at the four corners of the bottom end surface of the magnet lifting plate 4. The guide rods 5 are movably connected to the guide sleeve 6 provided in the shell 1, and a plurality of array-distributed connecting blocks 7 are provided on the bottom end surface of the magnet lifting plate 4. A pair of magnets 8 are provided on the top of each connecting block 7, and the upper half of the magnet 8 passes through the opening opened on the magnet lifting plate 4 and is located at the top surface of the magnet lifting plate 4.

[0021] A top plate 9 is provided at the top opening of the housing 1. Two pairs of rotating pressing blocks 10 are provided on the top plate 9. The rotating pressing blocks 10 are in the shape of cubes with rectangular cross sections. The rotating pressing blocks 10 are rotatably connected to the top plate 9 via a rotating shaft. A plurality of magnet receiving holes 11 are provided on the top plate 9. The magnet receiving holes 11 correspond one-to-one to the top ends of the magnets 8.

[0022] The tray also includes a high-precision carrier plate 12, which is provided with a plurality of pressing block through holes 13 corresponding to the rotating pressing blocks 10. At the same time, positioning sleeves 14 are provided at both ends of the high-precision carrier plate 12, and the housing 1 is provided with positioning pins 15 that match the positioning sleeves 14.

[0023] The high-precision carrier plate 12 is composed of a bottom plate 16, a middle plate 17 and a top plate 18 connected to each other. The bottom plate 16 is provided with a plurality of through holes 19, and the plurality of through holes 19 correspond one-to-one with the plurality of magnet receiving holes 11. The middle plate 17 and the top plate 18 are provided with a plurality of limiting holes 23, and the plurality of limiting holes 23 correspond one-to-one with the plurality of through holes 19.

[0024] A material box 20 is provided on the side wall of the housing 1 , and the tray also includes a reversing valve 21 , which can control the working state of the lifting cylinder 2 .

[0025] The positioning sleeve 14 is connected to the high-precision carrier plate 12 via four bolts evenly distributed in the circumferential direction.

[0026] The working process of the high-precision tinning tray of the embodiment of the utility model is as follows: a plurality of workpieces 22 that need to be tinned are placed in the positioning grooves on the high-precision carrier plate 12, and the workpieces 22 are positioned using these positioning grooves.

[0027] Since the high-precision carrier plate 12 does not directly dig out the positioning holes on a thicker plate, but uses the top surface of the bottom plate 16 as the bottom, and the inner sides of the limiting holes 23 opened on the middle plate 17 and the top plate 18 as the inner walls, a complete positioning groove is finally formed. Since the processing method of drilling holes in thin plates can achieve more precise processing compared to the processing method of digging holes in thick plates, this high-precision carrier plate 12 composed of three plates can obtain a positioning groove with high dimensional accuracy at a low cost;

[0028] When it is necessary to perform spot tinning operation on multiple workpieces 22, first place the high-precision carrier plate 12 on the top plate 9, insert the positioning pins 15 into the positioning sleeves 14 at both ends of the high-precision carrier plate 12 to achieve positioning. At the same time, all the rotating pressing blocks 10 will also enter the corresponding pressing block through holes 13 on the high-precision carrier plate 12. After the high-precision carrier plate 12 is in place, the operator drives the rotating pressing block 10 to rotate 90 degrees. Since the cross-section of the rotating pressing block 10 is rectangular, when it is rotated 90 degrees, it will press on the top of the high-precision carrier plate 12 and fix it on the housing 1.

[0029] The operator controls the lifting cylinder 2 by turning the reversing valve 21, and the lifting cylinder 2 drives the magnet lifting plate 4 to move upward. When the magnet lifting plate 4 moves to the upper limit position, the top ends of all the magnets 8 are located in the magnet receiving holes 11 opened on the top plate 9. At this time, the magnets 8 are close enough to the workpieces 22, and the magnetic field generated by the magnets 8 can act on the workpieces 22, that is, the workpieces 22 are attracted by the magnetic force. At this time, all the workpieces 22 are fixed in the positioning grooves and cannot move. In this case, when the tinning operation is carried out, the workpieces 22 will not be displaced due to the force, thereby ensuring the accuracy of the tinning operation.

[0030] After the tinning operation is completed, the reversing valve 21 is turned, the magnet lifting plate 4 is lowered, and the magnet 8 no longer attracts the workpiece 22. Each rotary pressing block 10 is rotated 90 degrees in the opposite direction, and the locking of the rotary pressing block 10 on the high-precision carrier 12 is released. The current high-precision carrier 12 is removed from the housing 1 and replaced with a new high-precision carrier 12 according to the above operation.

[0031] The relative position between the positioning sleeve 14 and the high-precision carrier plate 12 can be slightly adjusted by adjusting the bolts therebetween, thereby compensating for the overall offset of the high-precision carrier plate 12 and further improving the accuracy of the tinning operation.

Claims

1. A high-precision tray for tinning, characterized by: The tray comprises a shell (1), a lifting cylinder (2) is provided in the shell (1), the top end of the output shaft of the lifting cylinder (2) is connected to the magnet lifting plate (4) through a bracket (3), guide rods (5) are provided at the four corners of the bottom end surface of the magnet lifting plate (4), the guide rods (5) are movably connected to the guide sleeve (6) provided in the shell (1), a plurality of array-distributed connection blocks (7) are provided on the bottom end surface of the magnet lifting plate (4), a pair of magnets (8) are provided on the top end of each connection block (7), and the upper half of the magnet (8) passes through an opening provided on the magnet lifting plate (4) and is located at the top end surface of the magnet lifting plate (4). A top plate (9) is provided at the top opening of the shell (1), and two pairs of rotating pressing blocks (10) are provided on the top plate (9). The rotating pressing blocks (10) are in the shape of a cube with a rectangular cross section, and the rotating pressing blocks (10) are rotatably connected to the top plate (9) via a rotating shaft. A plurality of magnet receiving holes (11) are provided on the top plate (9), and the magnet receiving holes (11) correspond one to one with the top ends of the magnets (8). The tray further comprises a high-precision carrier plate (12), on which a plurality of pressure block through holes (13) corresponding one-to-one to the rotating pressure blocks (10) are provided, and positioning sleeves (14) are provided at both ends of the high-precision carrier plate (12), and the housing (1) is provided with positioning pins (15) matching the positioning sleeves (14). The high-precision carrier plate (12) is composed of a bottom plate (16), a middle plate (17) and a top plate (18) connected to each other. The bottom plate (16) is provided with a plurality of through holes (19), and the plurality of through holes (19) correspond one-to-one to the plurality of magnet receiving holes (11). The middle plate (17) and the top plate (18) are provided with a plurality of limiting holes (23), and the plurality of limiting holes (23) correspond one-to-one to the plurality of through holes (19). A material box (20) is provided on the side wall of the housing (1), and the tray also includes a reversing valve (21), and the reversing valve (21) can control the working state of the lifting cylinder (2).

2. The high-precision tray for tinning according to claim 1, characterized in that: The positioning sleeve (14) is connected to the high-precision carrier plate (12) via four bolts evenly distributed in the circumferential direction.

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