Double-station chip mounter

Abstract

The utility model relates to the technical field of chip mounters, in particular to a double-station chip mounter. A double-station chip mounter comprises a bottom plate arranged on a double-station chip mounter body, two symmetrically-arranged moving tables, an electric guide rail and a chip mounting head, two sliding blocks are connected to the electric guide rail in a sliding mode, the side wall of each sliding block is fixedly connected with an air cylinder, each air cylinder comprises a telescopic end, and the telescopic ends are connected with the moving tables in a sliding mode. The lower end of the telescopic end is fixedly connected with a moving block, the chip mounting head is fixedly connected to the bottom of the moving block, and the bottom of the moving block is connected with a hollow annular cover through a telescopic mechanism. Compared with the prior art, the double-station chip mounter has the beneficial effects that the positioning tool can be automatically pressed and limited during chip mounting, the positioning tool is prevented from moving, meanwhile, the surfaces of a module COB aluminum substrate and a chip are automatically blown and cleaned, the chip mounting quality is ensured, and the efficiency is improved through double-station switching.

Description

Technical Field

[0001] The utility model relates to the technical field of chip mounters, in particular to a double-station chip mounter. Background Art

[0002] After the optical module COB aluminum substrate is initially positioned by the positioning tool, it is stacked on the loading device of the double-station placement machine. When the optical module COB aluminum substrate needs to be mounted, the positioning tool is pushed to the mobile table of the placement machine in sequence through the loading device for placement operation.

[0003] However, when using the existing dual-station placement machine, it is not convenient to press and limit the positioning tooling, so that the positioning tooling may shift during the placement process, thereby affecting the quality of the placement. In addition, dust and other impurities are easily adhered to the surface of the chip and the optical module COB aluminum substrate, which will also affect the quality of the placement. Utility Model Content

[0004] The utility model aims at the technical problems existing in the prior art and provides a double-station chip mounter to solve the problem that the existing double-station chip mounter is not convenient for pressing and limiting the positioning tooling when in use, so that the positioning tooling may be displaced during the chip mounting process, thereby affecting the quality of the chip mounting, and dust and other impurities are easily adhered to the surface of the chip and the optical module COB aluminum substrate, which also affects the quality of the chip mounting.

[0005] The utility model solves the above-mentioned technical problem through the following technical scheme: a double-station placement machine, comprising a bottom plate arranged on the main body of the double-station placement machine, two symmetrically arranged moving tables, an electric guide rail and a placement head, wherein two sliders are slidably connected to the electric guide rail, and the side walls of each slider are fixedly connected with a cylinder, and the cylinder comprises a telescopic end, the lower end of the telescopic end is fixedly connected with a moving block, and the placement head is fixedly connected to the bottom of the moving block, the bottom of the moving block is connected with a hollow annular cover through a telescopic mechanism, and the inner side wall of the annular cover is provided with a plurality of blowing holes arranged in an array, and the bottom of the moving block is provided with a driving mechanism for driving the blowing holes for blowing.

[0006] The beneficial effects of the utility model are:

[0007] 1. This double-station chip mounter is provided with a telescopic mechanism, etc. When chip mounting is required, the positioning fixture storing the optical module COB aluminum substrate is pushed to the moving table, then the chip is adsorbed by the chip mounting head, and the chip is mounted on the optical module COB aluminum substrate by moving the moving table and the slider and lifting and lowering the telescopic end. In addition, when mounting is performed, the chip is aligned with the chip position by moving the moving table and the slider. Then, the cylinder is started to move the telescopic end downward, thereby driving the moving block and the chip mounting head downward, and then driving the chip downward. When the annular cover is against the top of the positioning fixture, it is pressed and limited, and the first spring is gradually compressed. When the moving block and the chip mounting head continue to move downward, the chip can be mounted on the optical module COB aluminum substrate, so that the positioning fixture can be automatically pressed and limited during mounting to prevent it from moving, thereby ensuring the quality of the patch, and improving efficiency through double-station switching.

[0008] 2. This double-station placement machine is provided with a driving mechanism, etc., so that when the placement is performed, when the annular cover is against the top of the positioning tooling, the first spring is gradually compressed. At this time, the distance between the moving block and the annular cover gradually decreases, so that the piston is pushed upward along the fixed tube through the connecting rod, and the air in the fixed tube can be squeezed, so that the internal air pressure gradually increases. At the same time, the first sealing ball is kept against the inner wall of the first conical tube, the air inlet pipe is kept in a closed state, and the second sealing ball moves away from the second conical tube and separates from it. At this time, the air outlet pipe is in an open state, so that the air in the fixed tube is squeezed and enters the annular groove in the annular cover through the air outlet pipe and the hose, and is blown onto the surface of the optical module COB aluminum substrate and the chip through the blowing hole, so as to facilitate the automatic blowing and cleaning of the surface of the module COB aluminum substrate and the chip to ensure the quality of the placement. When the chip contacts the module COB aluminum substrate, the moving block no longer moves. At this time, no blowing operation is performed. After the patch is completed, the moving block is moved upward by the cylinder. At this time, the first spring is gradually reset, and the distance between the moving block and the annular cover gradually increases. The piston is driven to move downward along the fixed tube through the connecting rod, so that negative pressure is generated in the fixed tube. At this time, the first sealing ball is gradually separated from the first conical tube, and the air inlet pipe is in an open state, while the second sealing ball is kept against the inner wall of the second conical tube. At this time, the air outlet pipe is in a closed state, so that external air can enter the fixed tube through the air inlet pipe for temporary storage. When the moving block continues to move upward, the annular cover can be separated from the top of the positioning tooling, and so on. Before the patch, the surface of the module COB aluminum substrate and the chip can be automatically blown and cleaned to ensure the quality of the patch.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the telescopic mechanism includes two symmetrically arranged connecting blocks fixedly connected to the side wall of the annular cover, and the top of each connecting block is fixedly connected to a T-shaped guide rod, the moving block is sleeved on the side wall of the T-shaped guide rod, and the side wall of each T-shaped guide rod is sleeved with a first spring.

[0011] The beneficial effect of adopting the above further solution is that when the patch is being mounted, when the annular cover abuts against the top of the positioning tool, it is pressed and limited, and the first spring is gradually compressed.

[0012] Furthermore, the driving mechanism includes an annular groove opened in the annular cover, and the blowing hole is connected to the annular groove, the bottom of the movable block is fixedly connected to a fixed tube, and a piston is connected to the fixed tube through a movable mechanism, the side wall of the fixed tube is fixedly connected to an air inlet pipe and an air outlet pipe, and the other end of the air outlet pipe is fixedly connected to a hose, the other end of the hose is fixedly inserted in the side wall of the annular cover and connected to the annular groove, a first opening and closing mechanism is arranged in the air inlet pipe, and a second opening and closing mechanism is arranged in the air outlet pipe.

[0013] The beneficial effect of adopting the above further scheme is that when the patch is performed, when the annular cover is against the top of the positioning tooling, the first spring is gradually compressed. At this time, the distance between the moving block and the annular cover gradually becomes smaller, so that the piston is pushed upward along the fixed tube by the moving mechanism, and the air in the fixed tube can be squeezed, so that the internal air pressure gradually increases. At the same time, the first opening and closing mechanism is closed, and the second opening and closing mechanism is opened. At this time, the air in the fixed tube is squeezed and enters the annular groove in the annular cover through the air outlet pipe and the hose, and is blown onto the optical module COB aluminum substrate and the chip through the blowing hole. The surface of the module COB aluminum substrate and the chip is automatically cleaned by blowing air to ensure the quality of the patch. After the patch is completed, the moving block is moved upward by the cylinder. At this time, the first spring is gradually reset, and the distance between the moving block and the annular cover is gradually increased. The piston is driven downward along the fixed tube by the moving mechanism, so that negative pressure is generated in the fixed tube. At this time, the first opening and closing mechanism is opened, and the second opening and closing mechanism is closed, so that the external air enters the fixed tube through the air inlet pipe for temporary storage. When the moving block continues to move upward, the annular cover can be separated from the top of the positioning tooling.

[0014] Furthermore, the moving mechanism includes a connecting rod fixedly connected to the bottom of the piston, the lower end of the connecting rod is fixedly connected to a connecting plate, and the connecting plate is fixed to the side wall of one of the connecting blocks.

[0015] The beneficial effect of adopting the above further solution is that when relative displacement occurs between the moving block and the annular cover, the piston can be driven to move along the fixed tube through the connecting plate and the connecting rod.

[0016] Furthermore, the first opening and closing mechanism includes a first tapered tube fixedly connected to the air intake pipe, a first sealing ball is connected to the air intake pipe via a first reset mechanism, and the first sealing ball abuts against an inner wall of the first tapered tube.

[0017] The beneficial effect of adopting the above further scheme is that when the piston moves upward along the fixed tube, it can squeeze the air in the fixed tube, so that the internal air pressure gradually increases, and the first sealing ball keeps against the inner wall of the first conical tube. At this time, the first opening and closing mechanism is closed. When the piston moves downward along the fixed tube, negative pressure is generated in the fixed tube. At this time, the first sealing ball gradually separates from the first conical tube, and the first opening and closing mechanism opens.

[0018] Furthermore, the first reset mechanism includes a first hollow disk fixedly inserted in the air intake pipe, an end of the first hollow disk is fixedly connected to a second spring, and the other end of the second spring is fixed to the side wall of the first sealing ball.

[0019] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the first sealing ball.

[0020] Furthermore, the second opening and closing mechanism includes a second conical tube fixedly connected to the air outlet pipe, a second sealing ball is connected to the air outlet pipe via a second reset mechanism, and the second sealing ball abuts against the inner wall of the second conical tube.

[0021] The beneficial effect of adopting the above further scheme is that when the piston moves upward along the fixed tube, it can squeeze the air in the fixed tube, so that the internal air pressure gradually increases, the second sealing ball moves away from the second conical tube and disengages from it, and the second opening and closing mechanism opens. When the piston moves downward along the fixed tube, negative pressure is generated in the fixed tube. At this time, the second sealing ball keeps against the inner wall of the second conical tube, and the second opening and closing mechanism is closed.

[0022] Furthermore, the second reset mechanism includes a second hollow disk fixedly inserted in the air outlet pipe, an end of the second hollow disk is fixedly connected to a third spring, and the other end of the third spring is fixed to the side wall of the second sealing ball.

[0023] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the second sealing ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the position of the driving mechanism in the utility model;

[0026] Figure 3It is a partial cross-sectional structural schematic diagram of the fixed pipe and the annular cover in the utility model;

[0027] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0030] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Double-station SMT machine body; 101. Bottom plate; 102. Moving table; 103. Electric guide rail; 104. Slider; 105. SMT head; 201. Connecting block; 202. T-shaped guide rod; 203. First spring; 301. Annular groove; 302. Fixed tube; 303. Piston; 304. Inlet pipe; 305. Outlet pipe; 306. Hose; 401. Connecting rod; 402. Connecting plate; 501. First conical tube; 502. First sealing ball; 601. First hollow disk; 602. Second spring; 701. Second conical tube; 702. Second sealing ball; 8. Cylinder; 801. Telescopic end; 9. Moving block; 10. Annular cover; 11. Blowing hole; 1201. Second hollow disk; 1202. Third spring. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] After the optical module COB aluminum substrate is initially positioned by the positioning tool, it is stacked on the loading device of the double-station placement machine. When the optical module COB aluminum substrate needs to be mounted, the positioning tool is pushed to the mobile table of the placement machine in sequence through the loading device for placement operation.

[0035] After an in-depth investigation and study of the use of a dual-station placement machine, the inventors found that when using an existing dual-station placement machine, it is not convenient to press and limit the positioning tooling, which may cause the positioning tooling to shift during the placement process, thereby affecting the quality of the placement. In addition, dust and other impurities are easily adhered to the surface of the chip and the optical module COB aluminum substrate, which will also affect the quality of the placement.

[0036] The above-mentioned problem has not been publicly reported in the art. The inventor discovered the above-mentioned problem and designed the present technical solution.

[0037] The utility model provides the following preferred embodiments

[0038] like Figure 1-Figure 7 As shown, a double-station chip mounter includes a bottom plate 101 arranged on a double-station chip mounter body 1, two symmetrically arranged moving tables 102, an electric guide rail 103 and a chip mount head 105, two sliders 104 are slidably connected to the electric guide rail 103, the side walls of each slider 104 are fixedly connected with a cylinder 8, and the cylinder 8 includes a telescopic end 801, the lower end of the telescopic end 801 is fixedly connected with a moving block 9, and the chip mount head 105 is fixedly connected to the bottom of the moving block 9, the bottom of the moving block 9 is connected with a hollow annular cover 10 through a telescopic mechanism, and the inner side wall of the annular cover 10 is provided with a plurality of array-arranged blowing holes 11, and the bottom of the moving block 9 is provided with a driving mechanism for driving the blowing holes 11 to blow air, which can automatically press and limit the positioning tooling during chip mounting to prevent it from moving, and at the same time, the surface of the module COB aluminum substrate and the chip is automatically blown and cleaned to ensure the quality of the chip, and the efficiency is improved by switching between the two stations.

[0039] In this embodiment, Figure 3 and Figure 5 As shown, the telescopic mechanism includes two symmetrically arranged connecting blocks 201 fixedly connected to the side wall of the annular cover 10, and the top of each connecting block 201 is fixedly connected with a T-shaped guide rod 202, the moving block 9 is sleeved on the side wall of the T-shaped guide rod 202, and the side wall of each T-shaped guide rod 202 is sleeved with a first spring 203. When the annular cover 10 is against the top of the positioning tooling, it is pressed and limited, and the first spring 203 is gradually compressed.

[0040] In this embodiment, Figure 2-Figure 7As shown, the driving mechanism includes an annular groove 301 opened in the annular cover 10, and the blowing hole 11 is connected to the annular groove 301, the bottom of the moving block 9 is fixedly connected with a fixed pipe 302, and the fixed pipe 302 is connected with a piston 303 through a moving mechanism, the side wall of the fixed pipe 302 is fixedly connected with an air inlet pipe 304 and an air outlet pipe 305, and the other end of the air outlet pipe 305 is fixedly connected with a hose 306, the other end of the hose 306 is fixedly inserted in the side wall of the annular cover 10 and connected to the annular groove 301, a first opening and closing mechanism is arranged in the air inlet pipe 304, and a second opening and closing mechanism is arranged in the air outlet pipe 305. When performing patching, when the annular cover 10 is against the top of the positioning tooling, the first spring 203 is gradually compressed. At this time, the distance between the moving block 9 and the annular cover 10 gradually decreases, so that the piston 303 is pushed upward along the fixed pipe 302 by the moving mechanism, and the air in the fixed pipe 302 can be squeezed to make the internal air The pressure gradually increases. At the same time, the first opening and closing mechanism is closed and the second opening and closing mechanism is opened. At this time, the air in the fixed tube 302 is squeezed and enters the annular groove 301 in the annular cover 10 through the air outlet pipe 305 and the hose 306, and is blown on the surface of the optical module COB aluminum substrate and the chip through the blowing hole 11, which is convenient for automatic blowing and cleaning of the surface of the module COB aluminum substrate and the chip to ensure the quality of the patch. After the patch is completed, the moving block 9 is moved upward by the cylinder 8. At this time, the first spring 203 is gradually reset, and the distance between the moving block 9 and the annular cover 10 is gradually increased, and the piston 303 is driven by the moving mechanism to move downward along the fixed tube 302, so that negative pressure is generated in the fixed tube 302. At this time, the first opening and closing mechanism is opened and the second opening and closing mechanism is closed, so that the external air enters the fixed tube 302 through the air inlet pipe 304 for temporary storage. When the moving block 9 continues to move upward, the annular cover 10 can be separated from the top of the positioning tooling.

[0041] In this embodiment, Figure 5 and Figure 6 As shown, the moving mechanism includes a connecting rod 401 fixedly connected to the bottom of the piston 303, the lower end of the connecting rod 401 is fixedly connected to a connecting plate 402, and the connecting plate 402 is fixed to the side wall of one of the connecting blocks 201. When relative displacement occurs between the moving block 9 and the annular cover 10, the piston 303 can be driven to move along the fixed tube 302 through the connecting plate 402 and the connecting rod 401.

[0042] In this embodiment, Figure 7As shown, the first opening and closing mechanism includes a first conical tube 501 fixedly connected to the air inlet pipe 304, and a first sealing ball 502 is connected to the air inlet pipe 304 through a first reset mechanism, and the first sealing ball 502 abuts against the inner wall of the first conical tube 501. When the piston 303 moves upward along the fixed tube 302, the air in the fixed tube 302 can be squeezed to gradually increase the internal air pressure. The first sealing ball 502 keeps abutting against the inner wall of the first conical tube 501. At this time, the first opening and closing mechanism is closed. When the piston 303 moves downward along the fixed tube 302, negative pressure is generated in the fixed tube 302. At this time, the first sealing ball 502 gradually separates from the first conical tube 501, and the first opening and closing mechanism is opened.

[0043] In this embodiment, Figure 7 As shown, the first reset mechanism includes a first hollow disk 601 fixedly inserted in the air intake pipe 304, the end of the first hollow disk 601 is fixedly connected to the second spring 602, and the other end of the second spring 602 is fixed to the side wall of the first sealing ball 502, which guides and resets the movement of the first sealing ball 502.

[0044] In this embodiment, Figure 7 As shown, the second opening and closing mechanism includes a second tapered tube 701 fixedly connected to the air outlet pipe 305, and a second sealing ball 702 is connected to the air outlet pipe 305 through a second reset mechanism, and the second sealing ball 702 abuts against the inner wall of the second tapered tube 701. When the piston 303 moves upward along the fixed tube 302, the air in the fixed tube 302 can be squeezed to gradually increase the internal air pressure, and the second sealing ball 702 moves away from the second tapered tube 701 and disengages from it, and the second opening and closing mechanism is opened. When the piston 303 moves downward along the fixed tube 302, negative pressure is generated in the fixed tube 302. At this time, the second sealing ball 702 keeps abutting against the inner wall of the second tapered tube 701, and the second opening and closing mechanism is closed.

[0045] In this embodiment, Figure 7 As shown, the second reset mechanism includes a second hollow disk 1201 fixedly inserted in the air outlet pipe 305, the end of the second hollow disk 1201 is fixedly connected to the third spring 1202, and the other end of the third spring 1202 is fixed to the side wall of the second sealing ball 702, which guides and resets the movement of the second sealing ball 702.

[0046] The specific working process of the utility model is as follows:

[0047] First, when patching is required, the positioning fixture storing the optical module COB aluminum substrate is pushed onto the moving table 102, then, the chip is adsorbed by the patch head 105, and the chip is attached to the optical module COB aluminum substrate by the movement of the moving table 102 and the slider 104 and the lifting of the telescopic end 801. In addition, when patching is performed, the chip is aligned with the patch position by the movement of the moving table 102 and the slider 104. Then, the cylinder 8 is started to move the telescopic end 801 downward, thereby driving the moving block 9 and the patch head 105 to move downward, and then driving the chip to move downward. When the annular cover 10 abuts against the top of the positioning fixture, it is pressed and limited, and the first spring 203 is gradually compressed. When the moving block 9 and the patch head 105 continue to move downward, the chip can be attached to the optical module COB aluminum substrate, so that the positioning fixture can be automatically pressed and limited during patching to prevent it from moving, thereby ensuring the quality of the patch, and improving efficiency through double-station switching;

[0048] During patching, when the annular cover 10 is against the top of the positioning fixture, the first spring 203 is gradually compressed. At this time, the distance between the moving block 9 and the annular cover 10 gradually decreases, so that the piston 303 is pushed upward along the fixed tube 302 through the connecting rod 401, and the air in the fixed tube 302 can be squeezed, so that the internal air pressure gradually increases. At the same time, the first sealing ball 502 is kept against the inner wall of the first conical tube 501, the air inlet pipe 304 is kept closed, and the second sealing ball 702 moves away from the second conical tube 701 and disengages from it. At this time, the air outlet pipe 305 is in an open state, so that the air in the fixed tube 302 is squeezed and enters the annular groove 301 in the annular cover 10 through the air outlet pipe 305 and the hose 306, and is blown onto the surface of the optical module COB aluminum substrate and the chip through the blowing hole 11, so as to facilitate automatic blowing and cleaning of the surface of the module COB aluminum substrate and the chip to ensure the quality of the patch;

[0049] When the chip contacts the module COB aluminum substrate, the moving block 9 no longer moves. At this time, no blowing operation is performed. After the patch is completed, the moving block 9 is moved upward by the cylinder 8. At this time, the first spring 203 is gradually reset, and the distance between the moving block 9 and the annular cover 10 is gradually increased. The piston 303 is driven to move downward along the fixed tube 302 through the connecting rod 401, so that a negative pressure is generated in the fixed tube 302. At this time, the first sealing ball 502 is gradually separated from the first conical tube 501, and the air inlet pipe 304 is in an open state, while the second sealing ball 702 is kept against the inner wall of the second conical tube 701. At this time, the air outlet pipe 305 is in a closed state, so that the external air can enter the fixed tube 302 through the air inlet pipe 304 for temporary storage. When the moving block 9 continues to move upward, the annular cover 10 can be separated from the top of the positioning tooling. In this way, the surface of the module COB aluminum substrate and the chip can be automatically blown and cleaned before the patch to ensure the quality of the patch.

[0050] To sum up: the beneficial effects of the utility model are specifically embodied in that the positioning tooling can be automatically pressed and limited during patching to prevent it from moving. At the same time, the surface of the module COB aluminum substrate and the chip are automatically blown and cleaned to ensure the quality of the patch, and the efficiency is improved by switching between double stations.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-station chip placement machine, comprising a bottom plate (101) arranged on a double-station chip placement machine body (1), two symmetrically arranged moving tables (102), an electric guide rail (103) and a chip placement head (105), wherein two sliders (104) are slidably connected to the electric guide rail (103), characterized in that: The side wall of each slider (104) is fixedly connected to a cylinder (8), and the cylinder (8) includes a telescopic end (801), the lower end of the telescopic end (801) is fixedly connected to a moving block (9), and the patch head (105) is fixedly connected to the bottom of the moving block (9), the bottom of the moving block (9) is connected to a hollow annular cover (10) through a telescopic mechanism, and the inner side wall of the annular cover (10) is provided with a plurality of blowing holes (11) arranged in an array, and the bottom of the moving block (9) is provided with a driving mechanism for driving the blowing holes (11) to blow air.

2. A dual-station placement machine according to claim 1, characterized in that: The telescopic mechanism comprises two symmetrically arranged connecting blocks (201) fixedly connected to the side wall of the annular cover (10), and the top of each connecting block (201) is fixedly connected to a T-shaped guide rod (202), the moving block (9) is sleeved on the side wall of the T-shaped guide rod (202), and the side wall of each T-shaped guide rod (202) is sleeved with a first spring (203).

3. A dual-station placement machine according to claim 1, characterized in that: The driving mechanism comprises an annular groove (301) provided in the annular cover (10), and the blowing hole (11) is communicated with the annular groove (301); the bottom of the movable block (9) is fixedly connected with a fixed pipe (302), and the fixed pipe (302) is connected with a piston (303) via a movable mechanism; the side wall of the fixed pipe (302) is fixedly connected with an air inlet pipe (304) and an air outlet pipe (305), and the other end of the air outlet pipe (305) is fixedly connected with a hose (306), and the other end of the hose (306) is fixedly inserted in the side wall of the annular cover (10) and communicated with the annular groove (301); a first opening and closing mechanism is provided in the air inlet pipe (304), and a second opening and closing mechanism is provided in the air outlet pipe (305).

4. A dual-station placement machine according to claim 3, characterized in that: The moving mechanism comprises a connecting rod (401) fixedly connected to the bottom of the piston (303), the lower end of the connecting rod (401) is fixedly connected to a connecting plate (402), and the connecting plate (402) is fixed to the side wall of one of the connecting blocks (201).

5. A dual-station placement machine according to claim 3, characterized in that: The first opening and closing mechanism comprises a first conical tube (501) fixedly connected to the air inlet pipe (304); a first sealing ball (502) is connected to the air inlet pipe (304) via a first reset mechanism, and the first sealing ball (502) abuts against the inner wall of the first conical tube (501).

6. A dual-station placement machine according to claim 5, characterized in that: The first reset mechanism comprises a first hollow disk (601) fixedly inserted in the air intake pipe (304), the end of the first hollow disk (601) is fixedly connected to a second spring (602), and the other end of the second spring (602) is fixed to the side wall of the first sealing ball (502).

7. A dual-station placement machine according to claim 3, characterized in that: The second opening and closing mechanism comprises a second conical tube (701) fixedly connected to the air outlet pipe (305); a second sealing ball (702) is connected to the air outlet pipe (305) via a second reset mechanism, and the second sealing ball (702) abuts against the inner wall of the second conical tube (701).

8. A dual-station placement machine according to claim 7, characterized in that: The second reset mechanism comprises a second hollow disk (1201) fixedly inserted in the air outlet pipe (305), the end of the second hollow disk (1201) is fixedly connected to a third spring (1202), and the other end of the third spring (1202) is fixed to the side wall of the second sealing ball (702).

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