Anti-pollution dispensing tool for chip crystal grains

Abstract

The utility model relates to the technical field of chip manufacturing, and discloses an anti-pollution dispensing tool for chip crystal grains, which comprises a workbench, the left end and the right end of the top of the workbench are fixedly connected with a fixing frame, the top of the fixing frame is provided with an adjustable dispensing mechanism, the surface of the workbench is provided with a chip processing mechanism, and the chip processing mechanism is provided with a chip. The chip processing mechanism comprises a cover plate clamping, turning and moving assembly and a heating and curing assembly, the cover plate clamping, turning and moving assembly is arranged at the top of the workbench, the heating and curing assembly is arranged on the surface and the bottom of the workbench, and the cover plate clamping, turning and moving assembly comprises a sliding frame; the sliding frames are fixedly connected to the front and rear ends of the left and right sides of the top of the workbench, and the cover plate clamping turnover moving assembly can solve the problem that dust and sundries remain when glass sheets are directly pasted, the problem of crystal grain pollution and the problem that crystal grains are prone to being crushed when the glass sheets are loaded through sealing and testing of the yield rate, and meanwhile can solve the problem that the crystal grains are prone to being crushed when the glass sheets are loaded.

Description

Technical Field

[0001] The utility model relates to the technical field of chip production, in particular to a chip crystal grain anti-pollution dispensing tool. Background Art

[0002] During the chip manufacturing process, the chip needs to be packaged. Packaging is the process of assembling integrated circuits into the final chip product. Simply put, it is to place the integrated circuit die produced by the foundry on a supporting substrate, lead out the pins, and then fix the package into a whole.

[0003] During the packaging process, a glass sheet is usually placed directly onto the die, but this can easily cause die contamination, test failure, and die crushing, resulting in low packaging yield and increased costs, which will affect the overall efficiency of chip processing. Utility Model Content

[0004] The purpose of the utility model is to provide a chip grain anti-pollution dispensing tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a chip grain anti-contamination dispensing tool, comprising a workbench, a fixing frame fixedly connected to the left and right ends of the top of the workbench, an adjustable dispensing mechanism provided on the top of the fixing frame, a chip processing mechanism provided on the surface of the workbench, the chip processing mechanism comprising a cover plate clamping, flipping and moving assembly and a heating and curing assembly, the cover plate clamping, flipping and moving assembly being provided on the top of the workbench, and the heating and curing assembly being provided on the surface and bottom of the workbench;

[0006] The cover plate clamping and flipping moving assembly includes a sliding frame, the sliding frame is fixedly connected to the left and right sides of the top of the workbench, and the front and rear ends of the left and right sides of the workbench are installed. A control motor is installed on the top of the back of the sliding frame. The inner surface of the sliding frame is slidably connected to a slider, the surface of the slider is fixedly connected to the fixed frame, the sliding block is slidably connected to the inside of the fixed frame, and the back of the inner side of the fixed frame is fixedly connected to the telescopic push rod. The right end of the sliding block is fixedly connected to the motor frame, and a motor is arranged inside the motor frame. The inner side of the sliding block is rotatably connected to the rotating shaft, the surface of the rotating shaft is fixedly connected to the connecting plate, the surface of the connecting plate is fixedly connected to the telescopic column, and the surface of the telescopic column is fixedly connected to the clamping clamp. The inner front end of the fixed frame is fixedly connected to the top plate, and a hydraulic cylinder is installed at the top center of the top plate. The bottom of the hydraulic cylinder is fixedly connected to the hydraulic telescopic push rod, and the bottom of the hydraulic telescopic push rod is fixedly connected There is a push plate. After the lid of the cover plate placement box plate is glued by the adjustable glue dispensing mechanism, the staff places the glass plate inside the cover plate placement box plate. After curing, the cover plate placement box plate can be transported by the first connecting frame, the height is changed by the sliding frame, and the position of the clamping clamp is changed by the telescopic push rod. The clamping clamp is moved to the cover plate placement box plate for clamping through the control of these components, and then transported to the chip placement box plate after clamping. The cover plate placement box plate is turned over and docked with the chip placement box plate by the motor and the rotating shaft. Finally, the push plate is pushed by the hydraulic cylinder and the hydraulic telescopic push rod to press the cover plate placement box plate so that the internal lid and glass plate fall on the chip component for packaging. The setting of this component can solve the problem of residual dust and debris when directly pasting glass sheets, solve the problem of grain contamination, and pass the sealing and testing yield. At the same time, it can solve the problem of grain crushing when putting on glass.

[0007] Preferably, one end of the telescopic push rod away from the fixed frame is fixedly connected to the back of the sliding block, and the rotating shaft is fixedly connected to the left output end of the motor.

[0008] Preferably, the heating and curing component includes a first heating chamber, the first heating chamber is fixedly connected to the rear end of the bottom of the workbench, the front end of the bottom of the workbench is fixedly connected to the second heating chamber, the first heating chamber and the second heating chamber are both fixedly connected to a fan mounting plate, a fan is installed on the surface of the fan mounting plate, and electric heating pipes are installed on the top of the first heating chamber and the second heating chamber, a heat inlet is provided on the surface of the workbench, a first placement rack is installed at the rear end of the top of the workbench, and the front end of the top of the workbench is fixedly connected to the second placement rack, and heat passage grooves are provided on the surfaces of the first placement rack and the second placement rack. During the dispensing and packaging processes, the staff can respectively start the components inside the first heating chamber and the second heating chamber through the control device to heat the device, so as to accelerate the rapid curing of the glue inside the top cover plate placement box plate and the chip placement box plate of the first placement rack and the second placement rack, thereby further improving the processing efficiency of the device.

[0009] The cam is fixedly mounted on the support frame, and the cam is connected to the first support frame by a screw thread on the front of the cam, and the cam is fixedly mounted on the support frame by a screw thread on the front of the cam.

[0010] Preferably, the first screw is fixedly connected to the front output end of the first drive motor, the second screw is fixedly connected to the right output end of the second drive motor, and the third screw is fixedly connected to the bottom output end of the third drive motor.

[0011] Preferably, a base is fixedly connected to the left and right ends of the bottom of the workbench, a first placement rack is installed at the rear end of the top of the workbench, and a second placement rack is fixedly connected to the front end of the top of the workbench. A cover placement box plate is provided on the top of the first placement rack, and a chip placement box plate is provided on the top of the second placement rack.

[0012] Compared with the existing technology, the present invention provides a chip grain anti-pollution dispensing tool, which has the following beneficial effects:

[0013] The chip crystal grain anti-pollution dispensing tooling is provided with a cover plate clamping and flipping moving component. After the cover inside the cover plate placement box plate is glued by the adjustable dispensing mechanism, the staff places the glass plate inside the cover plate placement box plate. After curing, the cover plate placement box plate can be transported by the first connecting frame, the height is changed by the sliding frame, and the position of the clamping clamp is changed by the telescopic push rod. The clamping clamp is moved to the cover plate placement box plate for clamping through the control of these components, and after clamping, it is transported to the chip placement box plate, and the cover plate placement box plate is turned over and docked with the chip placement box plate by the motor and the rotating shaft. Finally, the push plate is pushed by the hydraulic cylinder and the hydraulic telescopic push rod to press the cover plate placement box plate so that the internal cover and glass plate fall on the chip component for packaging. The setting of this component can solve the problem of residual dust and debris when directly pasting glass sheets, solve the problem of grain contamination, improve the sealing and testing yield, and solve the problem of grain crushing when putting on glass.

[0014] The chip grain anti-pollution dispensing tooling is equipped with a heating and curing component. During the dispensing and packaging process, the staff can use the control device to respectively start the components inside the first heating chamber and the second heating chamber to heat the device, thereby accelerating the rapid curing of the glue inside the first placement rack and the second placement rack top cover placement box plate and the chip placement box plate, further improving the processing efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the adjustable dispensing mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the second drive motor of the utility model structure;

[0019] Figure 4 This is a schematic diagram of the cover plate clamping, flipping and moving assembly of the utility model structure;

[0020] Figure 5 This is a schematic diagram of the heating and curing components of the structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the interior of the heating and curing component of the utility model structure.

[0022] In the figure: 1. workbench; 2. base; 3. first placement rack; 4. cover plate placement box plate; 5. second placement rack; 6. chip placement box plate; 7. fixed rack; 8. adjustable dispensing mechanism; 81. first connecting rack; 82. first screw; 83. first fixing rod; 84. first drive motor; 85. support slide block; 86. second connecting rack; 87. second drive motor; 88. second screw; 89. second fixing rod; 801. first sliding rack; 802. motor support rack; 803. third drive motor; 804. third screw; 805. third fixing rod; 806. second sliding rack; 807. glue barrel; 808. connecting pipe; 809. dispensing head; 9. core Sheet processing mechanism; 91, cover plate clamping and flipping moving assembly; 911, sliding frame; 912, control motor; 913, slider; 914, fixed frame; 915, sliding block; 916, telescopic push rod; 917, motor frame; 918, motor; 919, rotating shaft; 9101, connecting plate; 9102, telescopic column; 9103, clamping clamp; 9104, top plate; 9105, hydraulic cylinder; 9106, hydraulic telescopic push rod; 9107, push plate; 92, heating and curing assembly; 921, first heating chamber; 922, second heating chamber; 923, fan mounting plate; 924, fan; 925, electric heating pipe; 926, heat inlet; 927, heat passage groove. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] The utility model provides the following technical solutions:

[0026] For example 1, please refer to Figure 1-6A chip grain anti-pollution glue dispensing tool includes a workbench 1, with fixed frames 7 fixedly connected to the left and right ends of the top of the workbench 1, an adjustable glue dispensing mechanism 8 is provided on the top of the fixed frame 7, a chip processing mechanism 9 is provided on the surface of the workbench 1, and the chip processing mechanism 9 includes a cover plate clamping and flipping moving component 91 and a heating and curing component 92. The cover plate clamping and flipping moving component 91 is provided on the top of the workbench 1, and the heating and curing component 92 is provided on the surface and bottom of the workbench 1;

[0027] The cover plate clamping and flipping moving assembly 91 includes a sliding frame 911, which is fixedly connected to the left and right sides of the top of the workbench 1, the front and rear ends, and the top of the back of the sliding frame 911 is equipped with a control motor 912. The inner surface of the sliding frame 911 is slidably connected to a slider 913, and the surface of the slider 913 is fixedly connected to a fixed frame 914. The interior of the fixed frame 914 is slidably connected to a sliding block 915. The inner back of the fixed frame 914 is fixedly connected to a telescopic push rod 916. The right end of the sliding block 915 is fixedly connected to the motor frame 91. 7. A motor 918 is provided inside the motor frame 917. A rotating shaft 919 is rotatably connected to the inner side of the sliding block 915. A connecting plate 9101 is fixedly connected to the surface of the rotating shaft 919. A telescopic column 9102 is fixedly connected to the surface of the connecting plate 9101. A clamping clamp 9103 is fixedly connected to the surface of the telescopic column 9102. After the lid of the cover plate is placed inside the box plate 4 by the adjustable dispensing mechanism 8, the staff places the glass plate inside the cover plate placement box plate 4. After curing, the cover plate can be placed by the first connecting frame 81. The box plate 4 is transported, and the front end of the inner side of the fixed frame 7 is fixedly connected to the top plate 9104. The top center of the top plate 9104 is installed with a hydraulic cylinder 9105. The bottom of the hydraulic cylinder 9105 is fixedly connected to a hydraulic telescopic push rod 9106. The bottom of the hydraulic telescopic push rod 9106 is fixedly connected to a push plate 9107. The height is changed by sliding the frame 911, and the position of the clamping clamp 9103 is changed by the telescopic push rod 916. The clamping clamp 9103 is moved to the cover plate to clamp the box plate 4 through the control of these components. After clamping, it is transported to the core The chip is placed on the box plate 6, and the motor 918 and the rotating shaft 919 drive the cover plate placement box plate 4 to turn over and dock with the chip placement box plate 6. Finally, the hydraulic cylinder 9105 and the hydraulic telescopic push rod 9106 push the push plate 9107 to press the cover plate placement box plate 4 so that the internal cover and glass plate fall on the chip components for packaging. The setting of this component can solve the problem of residual dust and debris when directly pasting the glass sheet, solve the problem of grain contamination, improve the yield rate through sealing and testing, and solve the problem of grain crushing when placing the glass;

[0028] The end of the telescopic push rod 916 away from the fixed frame 914 is fixedly connected to the back of the sliding block 915, and the rotating shaft 919 is fixedly connected to the left output end of the motor 918;

[0029] The heating and curing component 92 includes a first heating chamber 921, which is fixedly connected to the rear end of the bottom of the workbench 1, and a second heating chamber 922 is fixedly connected to the front end of the bottom of the workbench 1. A fan mounting plate 923 is fixedly connected inside the first heating chamber 921 and the second heating chamber 922, and a fan 924 is installed on the surface of the fan mounting plate 923. Electric heating pipes 925 are installed on the top of the first heating chamber 921 and the second heating chamber 922. A heat inlet 926 is provided on the surface of the workbench 1. A first placement rack 3 is installed at the rear end of the top of the workbench 1, and a second placement rack 5 is fixedly connected to the front end of the top of the workbench 1. Heat passage grooves 927 are provided on the surfaces of the first placement rack 3 and the second placement rack 5. During the dispensing and packaging process, the staff can use the control device to start the components inside the first heating chamber 921 and the second heating chamber 922 respectively to heat the device, thereby accelerating the rapid curing of the glue inside the top cover plate placement box plate 4 and the chip placement box plate 6 of the first placement rack 3 and the second placement rack 5, thereby further improving the processing efficiency of the device.

[0030] For example 2, please refer to Figure 1-6 , and on the basis of Example 1, the adjustable dispensing mechanism 8 is further obtained, which includes a first connecting frame 81, the first connecting frame 81 is fixedly connected to the top of the fixing frame 7, the inner side of the outer end of the first connecting frame 81 is rotatably connected to the first screw 82, the inner side of the outer end of the first connecting frame 81 is fixedly connected to the first fixing rod 83, the back side of the first connecting frame 81 is installed with a first driving motor 84, the surface of the first screw 82 is threadedly connected to a supporting sliding block 85, the top of the supporting sliding block 85 is fixedly connected to a second connecting frame 86, the left end of the second connecting frame 86 is installed with a second driving motor 87, the front side of the second connecting frame 86 is rotatably connected to the second screw 88, and the front side of the second connecting frame 86 is fixedly connected to the second fixing rod 83. The fixed rod 89 and the second screw rod 88 are threadedly connected to the first sliding frame 801 on the surface. The first sliding frame 801 is slidably connected to the surface of the second fixed rod 89. The top of the first sliding frame 801 is fixedly connected to the motor support frame 802. The third drive motor 803 is installed on the top of the motor support frame 802. The front of the first sliding frame 801 is rotatably connected to the third screw rod 804. The front of the first sliding frame 801 is fixedly connected to the third fixed rod 805. The surface of the third screw rod 804 is threadedly connected to the second sliding frame 806. The surface of the second sliding frame 806 is installed with a glue barrel 807. The bottom of the glue barrel 807 is fixedly connected to a connecting pipe 808. The bottom of the connecting pipe 808 is fixedly connected to a glue head 809.

[0031] The first screw 82 is fixedly connected to the front output end of the first drive motor 84, the second screw 88 is fixedly connected to the right output end of the second drive motor 87, and the third screw 804 is fixedly connected to the bottom output end of the third drive motor 803;

[0032] A base 2 is fixedly connected to the left and right ends of the bottom of the workbench 1, a first placement rack 3 is installed on the rear end of the top of the workbench 1, a second placement rack 5 is fixedly connected to the front end of the top of the workbench 1, a cover placement box plate 4 is provided on the top of the first placement rack 3, and a chip placement box plate 6 is provided on the top of the second placement rack 5.

[0033] During actual operation, when this device is used, the cover plate placement box plate 4 and the second placement rack 5 are placed on top of the first placement rack 3 and the chip placement box plate 6, and then the device is started to dispense glue, and the longitudinal position of the support sliding block 85 and the top component is changed by the first drive motor 84, the first screw 82 and the first fixed rod 83, and the lateral position of the first sliding rack 801 is changed by the second drive motor 87, the second screw 88, and the second fixed rod 89, and the height of the second sliding rack 806 is changed by the third drive motor 803, the third screw 804 and the third fixed rod 805, and the cover plate placement box plate 4 is dispensed with glue by the dispensing head 809, and the height is changed by the sliding frame 911, and the position of the clamping clamp 9103 is changed by the telescopic push rod 916. The clamping clamp 9103 is moved to the cover plate placement box plate 4 for clamping through the control of these components, and then transported to the chip placement box plate after clamping. The cover plate placement box plate 4 is turned over and docked with the chip placement box plate 6 by the motor 918 and the rotating shaft 919, and finally the push plate 9107 is pushed by the hydraulic cylinder 9105 and the hydraulic telescopic push rod 9106 to press the cover plate placement box plate 4 so that the internal cover and glass plate fall on the chip component for packaging. The setting of this component can solve the problem of residual dust and debris when directly pasting glass sheets, solve the problem of grain contamination, and solve the problem of grain crushing when putting on glass by sealing and testing the yield rate. At the same time, it can solve the problem of grain crushing when putting on glass. In the process of dispensing and packaging, the staff can use the control device to start the components inside the first heating chamber 921 and the second heating chamber 922 respectively to heat the device, so as to accelerate the rapid solidification of the glue inside the cover plate placement box plate 4 and the chip placement box plate 6 on the top of the first placement rack 3 and the second placement rack 5, and further improve the processing efficiency of the device.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A chip grain anti-pollution dispensing tool, comprising a workbench (1), characterized in that: The left and right ends of the top of the workbench (1) are fixedly connected to a fixing frame (7), the top of the fixing frame (7) is provided with an adjustable dispensing mechanism (8), the surface of the workbench (1) is provided with a chip processing mechanism (9), the chip processing mechanism (9) comprises a cover plate clamping and flipping moving component (91) and a heating and curing component (92), the cover plate clamping and flipping moving component (91) is provided on the top of the workbench (1), and the heating and curing component (92) is provided on the surface and bottom of the workbench (1); The cover plate clamping and flipping moving assembly (91) comprises a sliding frame (911), the sliding frame (911) is fixedly connected to the left and right sides and the front and rear ends of the top of the workbench (1), a control motor (912) is installed on the top of the back of the sliding frame (911), a slider (913) is slidably connected to the inner surface of the sliding frame (911), the surface of the slider (913) is fixedly connected to the fixed frame (914), a sliding block (915) is slidably connected inside the fixed frame (914), a telescopic push rod (916) is fixedly connected to the inner back of the fixed frame (914), the right end of the sliding block (915) is fixedly connected to the motor frame (917), and the inner surface of the motor frame (917) is fixedly connected to the motor frame (917). A motor (918) is provided on the inside of the sliding block (915), a rotating shaft (919) is rotatably connected to the inside of the sliding block (915), a connecting plate (9101) is fixedly connected to the surface of the rotating shaft (919), a telescopic column (9102) is fixedly connected to the surface of the connecting plate (9101), a clamping clamp (9103) is fixedly connected to the surface of the telescopic column (9102), a top plate (9104) is fixedly connected to the front end inside the fixed frame (7), a hydraulic cylinder (9105) is installed at the top center of the top plate (9104), a hydraulic telescopic push rod (9106) is fixedly connected to the bottom of the hydraulic cylinder (9105), and a push plate (9107) is fixedly connected to the bottom of the hydraulic telescopic push rod (9106).

2. The chip die anti-pollution dispensing tool according to claim 1, characterized in that: One end of the telescopic push rod (916) away from the fixed frame (914) is fixedly connected to the back of the sliding block (915), and the rotating shaft (919) is fixedly connected to the left output end of the motor (918).

3. The chip die anti-pollution dispensing tool according to claim 1, characterized in that: The heating and curing assembly (92) includes a first heating chamber (921), the first heating chamber (921) is fixedly connected to the rear end of the bottom of the workbench (1), the front end of the bottom of the workbench (1) is fixedly connected to the second heating chamber (922), the first heating chamber (921) and the second heating chamber (922) are fixedly connected to the inside of the first heating chamber (921) and the second heating chamber (922), a fan (924) is installed on the surface of the fan mounting plate (923), an electric heating pipe (925) is installed on the top of the first heating chamber (921) and the second heating chamber (922), a heat inlet (926) is provided on the surface of the workbench (1), a first placement rack (3) is installed at the rear end of the top of the workbench (1), a second placement rack (5) is fixedly connected to the front end of the top of the workbench (1), and a heat passage groove (927) is provided on the surface of the first placement rack (3) and the second placement rack (5).

4. The chip die anti-pollution dispensing tool according to claim 1, characterized in that: The adjustable dispensing mechanism (8) includes a first connecting frame (81), the first connecting frame (81) is fixedly connected to the top of the fixing frame (7), the inner side of the outer end of the first connecting frame (81) is rotatably connected to the first screw rod (82), the inner side of the outer end of the first connecting frame (81) is fixedly connected to the first fixing rod (83), the back side of the first connecting frame (81) is installed with a first driving motor (84), the surface of the first screw rod (82) is threadedly connected to a supporting sliding block (85), the top of the supporting sliding block (85) is fixedly connected to a second connecting frame (86), the left end of the second connecting frame (86) is installed with a second driving motor (87), the front side of the second connecting frame (86) is rotatably connected to the second screw rod (88), the front side of the second connecting frame (86) is fixedly connected to the second fixing rod (89), the second screw rod (84) is threadedly connected to the second fixing rod (89), the second screw rod (84) is threadedly connected to the first ... The surface of the rod (88) is threadedly connected to a first sliding frame (801), the first sliding frame (801) is slidably connected to the surface of the second fixed rod (89), the top of the first sliding frame (801) is fixedly connected to a motor support frame (802), the top of the motor support frame (802) is installed with a third driving motor (803), the front of the first sliding frame (801) is internally rotatably connected to a third screw rod (804), the front of the first sliding frame (801) is internally fixedly connected to a third fixed rod (805), the surface of the third screw rod (804) is threadedly connected to a second sliding frame (806), the surface of the second sliding frame (806) is installed with a glue barrel (807), the bottom of the glue barrel (807) is fixedly connected to a connecting pipe (808), and the bottom of the connecting pipe (808) is fixedly connected to a glue head (809).

5. The chip die anti-pollution dispensing tool according to claim 4, characterized in that: The first screw (82) is fixedly connected to the front output end of the first drive motor (84), the second screw (88) is fixedly connected to the right output end of the second drive motor (87), and the third screw (804) is fixedly connected to the bottom output end of the third drive motor (803).

6. The chip die anti-pollution dispensing tool according to claim 1, characterized in that: The left and right ends of the bottom of the workbench (1) are fixedly connected to a base (2); the rear end of the top of the workbench (1) is provided with a first placement rack (3); the front end of the top of the workbench (1) is fixedly connected to a second placement rack (5); the top of the first placement rack (3) is provided with a cover placement box plate (4); the top of the second placement rack (5) is provided with a chip placement box plate (6).

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