A laboratory dispensing and glue filling equipment and a dispensing and glue filling method

Abstract

The application discloses a laboratory partial filling and glue filling equipment and method, and relates to the technical field of fluid partial filling, which has the technical scheme as follows: the equipment comprises a rack, a sliding seat slidingly connected to the rack, and a first driving assembly for driving the sliding seat to slide longitudinally; the equipment further comprises a glue storage barrel arranged on the rack, a pressing disc arranged on the sliding seat, and a clamping jig detachably connected to the sliding seat and used for clamping a needle cylinder; the pressing disc is slidingly matched with the glue storage barrel, and a sealed cavity is formed between the pressing disc and the glue storage barrel; a liquid taking opening is arranged on the pressing disc; the liquid taking opening and the needle cylinder on the clamping jig are connected in communication through a glue conveying pipe; and when the pressing disc is pressed downward, glue liquid in the sealed cavity is partially filled into the needle cylinder from bottom to top. The application has the advantages of small and compact structure, convenient and fast operation, and high partial filling precision.

Description

Technical Field

[0001] This invention relates to the field of fluid dispensing and dispensing technology, and more specifically, to a laboratory dispensing and dispensing equipment and method. Background Technology

[0002] In laboratory research, product development, and small-batch production, the demand for precise dispensing of viscous fluids such as adhesives is increasing. Traditional manual methods are no longer sufficient to meet the requirements of modern laboratories for precision, efficiency, and cleanliness. Manual dispensing is not only time-consuming and labor-intensive, but it is also difficult to ensure that the amount dispensed each time is precisely consistent, which is unacceptable for scientific research that requires strict control of experimental conditions. In addition, manual operation is prone to introducing contamination, affecting the accuracy of experimental results.

[0003] To address the aforementioned issues, although some automated dispensing equipment already exists on the market, these devices are often designed for large-scale industrial production, are bulky, and complex to operate, making them difficult to adapt to the changing, small-batch dispensing needs of laboratories. Moreover, most of these devices place the glue storage tank above the dispensing platform, with the glue being dispensed into the syringe from top to bottom. When the dispensing is interrupted, the glue may continue to drip into the syringe due to gravity, resulting in low dispensing accuracy of the glue volume in the syringe.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a laboratory dispensing and filling device and method, which has the advantages of compact structure, convenient and quick operation, and high dispensing accuracy.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a laboratory dispensing and filling device, comprising a frame, a slide connected slidably to the frame, and a first driving component for driving the slide to slide longitudinally, and further comprising a glue storage tank disposed on the frame, a pressure plate disposed on the slide, and a clamping fixture detachably connected to the slide for clamping syringes, wherein the pressure plate is slidably adapted to the glue storage tank, and a sealed chamber is formed between the pressure plate and the glue storage tank, wherein the pressure plate is provided with a liquid dispensing port, and the liquid dispensing port and the syringes on the clamping fixture are connected by a glue delivery tube, wherein the pressure plate is configured such that when the pressure plate is pressed down, the glue liquid in the sealed chamber is dispensed into the syringes from bottom to top.

[0007] In one embodiment, the laboratory dispensing and filling equipment further includes a vacuum device and an electric ball valve. The pressure plate is provided with a vacuum port, and the vacuum port, the electric ball valve, and the vacuum device are connected sequentially through a vacuum tube.

[0008] In one embodiment, a dispensing nozzle is detachably connected to the slide below the clamping fixture via a threaded structure. A connector is inserted into the liquid dispensing port. The dispensing tube is connected between the dispensing nozzle and the connector. A slide plate is slidably connected to the slide along the longitudinal direction. Two locking blocks are fixedly connected to the slide plate, forming a groove between the two locking blocks and the slide plate. A positioning pin is fixed on the slide plate located in the groove. The clamping fixture is provided with a positioning groove that matches the positioning pin. The clamping fixture is inserted into the groove. The clamping fixture is provided with a locking groove. A locking pin that can extend into the locking groove is provided on any one of the locking blocks. The slide is provided with a second driving component for driving the slide plate to slide so that the syringe is inserted into the dispensing nozzle. The clamping fixture includes a U-shaped groove and an ear-end groove for the syringe ear end to be inserted. An elastic U-shaped rubber pad is provided in the U-shaped groove.

[0009] In one embodiment, the elastic U-shaped rubber pad includes a bottom end and two elastic ends. The bottom end is fixedly connected to a clamping fixture. The clamping fixture is provided with movable cavities for the two elastic ends to move. A sliding cavity is provided on one side of each movable cavity. A wedge is slidably connected in the sliding cavity. One end of the wedge extends out of the sliding cavity and abuts against the slide plate. A spring is fixedly connected between the other end of the wedge and the clamping fixture. The elastic end is provided with a wedge-shaped fitting part that matches the wedge. When the clamping fixture is installed in place on the slide plate, the two elastic ends close together and adhere tightly to the outer wall of the syringe.

[0010] In one embodiment, a displacement sensor is disposed on the slide above the clamping fixture, and a third driving assembly is disposed on the slide for driving the displacement sensor to slide longitudinally. The sensor is disposed on a pin that can abut against the piston rod of the syringe.

[0011] In one embodiment, the third drive assembly includes a lead screw rotatably connected to a slide, a first synchronous pulley fixed to the lead screw, a motor fixed to the slide, a second synchronous pulley fixed to the output end of the motor, and a synchronous belt drivingly connected between the first and second synchronous pulleys. A bracket is slidably connected to the slide via a slide rail pair, and the displacement sensor is fixed to the bracket. The bracket is provided with a threaded groove that is threadedly connected to the lead screw.

[0012] In one embodiment, the glue delivery tube is a flexible tube, a pad is fixed on the slide, and a first cylinder is provided on the slide to press the glue delivery tube against the pad to block the glue.

[0013] In one embodiment, the laboratory dispensing and filling equipment further includes a PLC controller, an electronic scale, a machine platform, and a machine cover fixed on the machine platform. The machine platform is fixed inside the machine cover, and the electronic scale is placed on the machine platform located on one side of the machine platform. The electronic scale is electrically connected to the PLC controller. The electronic scale is used to weigh the syringes filled with glue and send the weighing data to the PLC controller in real time.

[0014] In one embodiment, the bottom of the frame is provided with two half-barrel covering blocks and a pressure block that fixes the half-barrel covering blocks to the frame. The pressure block is detachably connected to the frame by bolts, and the glue storage barrel is covered and fixed between the two half-barrel covering blocks.

[0015] A dispensing and filling method, comprising any of the laboratory dispensing and filling devices described above, further comprising the following steps:

[0016] S1. Install the syringe on the clamping fixture. The third drive assembly first drives the ejector pin to press the piston rod of the syringe down into place, and then drives the ejector pin to move up to a waiting position.

[0017] S2. The first drive component drives the pressure plate to press down a certain distance. After the vacuum device evacuates the sealed chamber and maintains the pressure for a period of time, the pressure plate continues to press down. When the pressure plate comes into contact with the liquid surface in the glue storage tank, the glue is dispensed into the syringe from bottom to top.

[0018] S3. After the adhesive pushes the piston rod upward to the waiting position, continue to push the ejector pin upward to the target set value of the displacement sensor. The first cylinder is ejected, the adhesive is blocked, and the dispensing of the adhesive in the syringe is completed.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. By forming a sealed chamber between the pressure plate and the glue storage tank, and realizing the glue liquid dispensing method from bottom to top when the pressure plate is pressed down, the glue liquid dripping problem caused by gravity during the traditional top-down dispensing is effectively avoided, thereby significantly improving the dispensing accuracy of the glue liquid in the syringe and meeting the high requirements of the laboratory for accurate dispensing.

[0021] 2. By placing the glue storage tank on the frame and the pressure plate and clamping fixture on the slide, the overall layout is arranged longitudinally, which effectively reduces the occupancy rate of the transverse space. It has the advantages of compact structure and simple operation. Compared with large industrial glue dispensing equipment, it is easier to adapt to the changing and small-batch dispensing needs of the laboratory. Its detachable clamping fixture allows for easy replacement of syringes of different specifications and types, increasing the flexibility and versatility of the equipment.

[0022] 3. By communicating with the PLC controller through the electronic scale, the weighing data can be sent to the PLC controller in real time. This allows the PLC controller to monitor the changes in the amount of adhesive during the dispensing process in real time and make timely feedback and adjustments as needed. This helps to detect and correct deviations in the dispensing process in a timely manner, ensuring the stability and consistency of the dispensing process and improving the accuracy and reliability of dispensing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a laboratory dispensing and filling device according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the internal structure of a laboratory dispensing and filling device according to an embodiment of this application. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the internal structure of a laboratory dispensing and filling device according to an embodiment of this application. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the structure of the card block, positioning pin, and locking pin in the laboratory dispensing and filling equipment according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the clamping fixture in a laboratory dispensing and filling device according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the wedge and elastic U-shaped rubber pad in the laboratory dispensing and filling equipment of an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the structure of the third drive component in the laboratory dispensing and filling equipment according to an embodiment of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the pad and the first gas in the laboratory dispensing and filling equipment according to an embodiment of this application;

[0031] Figure 9 This is a schematic diagram of the structure of the glue storage tank, half-bucket coating block, and pressing block in the laboratory dispensing equipment of an embodiment of this application.

[0032] In the diagram: 1. Frame; 2. Machine cover; 3. Machine platform; 4. Electronic scale; 5. Slide; 6. Slide plate; 7. First drive assembly; 8. Clamping fixture; 81. Positioning slot; 82. Locking slot; 83. Ear end slot; 84. U-shaped slot; 85. Elastic U-shaped rubber pad; 851. Bottom end; 852. Elastic end; 9. Glue storage tank; 10. Pressure plate; 11. Ejector pin; 12. Displacement sensor; 13. Connector; 14. Glue delivery tube; 15. 16. Dispensing nozzle; 17. Vacuum tube; 18. Electric ball valve; 19. Second drive assembly; 20. Locking block; 21. Positioning pin; 22. Locking pin; 23. Spring; 24. Wedge; 24. Third drive assembly; 241. Lead screw; 242. Slide rail pair; 243. Bracket; 244. First synchronous pulley; 245. Second synchronous pulley; 246. Motor; 25. Pad block; 26. First cylinder; 27. Half-barrel covering block; 28. Pressing block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figure 2 As shown, an embodiment of this application provides a laboratory dispensing and filling device, including a frame 1, a slide 5 slidably connected to the frame 1, and a first driving assembly 7 for driving the slide 5 to slide longitudinally. The first driving assembly 7 is specifically an electric cylinder with a torque sensor. The electric cylinder is fixed to the top of the frame 1, and the output end of the electric cylinder is fixedly connected to the slide 5. It also includes a glue storage tank 9 disposed on the frame 1, a pressure plate 10 disposed on the slide 5, and a clamping fixture 8 detachably connected to the slide 5 for clamping syringes. A piston rubber ring is disposed on the outer peripheral wall of the pressure plate 10. The pressure plate 10 is slidably adapted to the glue storage tank 9, and a sealed chamber is formed between the pressure plate 10 and the glue storage tank 9. The torque sensor can sense the downward pressure of the pressure plate 10 in real time, ensuring that the downward pressure process is neither too violent, causing glue to splash out, nor too gentle, failing to effectively push the glue. The pressure plate 10 is provided with a liquid inlet, and the liquid inlet and the syringe on the clamping fixture 8 are connected by a glue delivery tube 14. The pressure plate 10 is configured such that when the pressure plate 10 is pressed down, the glue in the sealed chamber is dispensed into the syringe from bottom to top.

[0035] It should be noted that the above-mentioned laboratory dispensing and filling equipment is not limited to dispensing adhesives, but can also be used for dispensing other fluids such as silver paste.

[0036] When the above-mentioned laboratory dispensing and dispensing equipment is in operation, the clamping fixture 8 is installed on the slide 5, the first drive component 7 is activated, and the slide 5 and the pressure plate 10 on it are driven to slide longitudinally towards the glue storage tank 9. During the sliding process, the pressure plate 10 gradually comes into contact with the opening of the glue storage tank 9 to form a sealed chamber. As the pressure plate 10 is pressed down further, the air in the sealed chamber is discharged, and the glue begins to flow from bottom to top under pressure. The glue enters the glue delivery tube 14 through the liquid outlet and is finally dispensed into the syringe, at which point the dispensing operation is completed.

[0037] In the above method, by forming a sealed chamber between the pressure plate 10 and the glue storage tank 9, and by dispensing the glue from bottom to top when the pressure plate 10 is pressed down, the problem of glue dripping due to gravity during traditional top-down dispensing is effectively avoided. This significantly improves the dispensing accuracy of the glue in the syringe and meets the high requirements of the laboratory for precise dispensing. By setting the glue storage tank 9 on the frame 1 and setting the pressure plate 10 and the clamping fixture 8 on the slide 5, the overall layout is arranged longitudinally, which effectively reduces the occupancy rate of the lateral space. It has the advantages of compact structure and simple operation. Compared with large industrial glue dispensing equipment, it is easier to adapt to the changing and small-batch dispensing needs of the laboratory. The detachable clamping fixture 8 allows for easy replacement of syringes of different specifications and types, increasing the flexibility and versatility of the equipment.

[0038] In this embodiment, as Figure 3 As shown, the laboratory dispensing and filling equipment also includes a vacuum device and an electric ball valve 17. The pressure plate 10 is provided with a vacuum port, and the vacuum port, the electric ball valve 17 and the vacuum device are connected sequentially through a vacuum tube 16.

[0039] In the above method, the vacuuming device can adjust the vacuuming time, intensity and other parameters in real time according to the detection value of the torque sensor, so as to maintain a suitable pressure in the sealed chamber, so that the adhesive can be smoothly dispensed into the syringe. During this process, the air bubbles inside the adhesive can float to the surface and finally be discharged as gas along the vacuuming device, minimizing the air bubbles in the adhesive.

[0040] In this embodiment, as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, a dispensing nozzle 15 is detachably connected to the slide 5 below the clamping fixture 8 via a threaded structure. This allows for the replacement of different specifications or types of dispensing nozzles 15 according to different dispensing needs, increasing the flexibility and versatility of the equipment. A connector 13 is inserted into the liquid inlet, and the glue delivery tube 14 connects the dispensing nozzle 15 and the connector 13, forming a complete glue delivery channel. A slide plate 6 is slidably connected longitudinally to the slide block 5. Two locking blocks 19 are fixedly connected to the slide plate 6, forming a groove between the two locking blocks 19 and the slide plate 6. A positioning pin 20 is fixed on the slide plate 6 within the groove. The clamping fixture 8 is provided with a positioning groove 81 that matches the positioning pin 20. The clamping fixture 8 is inserted into the groove. The clamping fixture 8 is provided with a locking groove 82. Each locking block 19 is provided with a locking pin 21 that can extend into the locking groove 82. The locking pin 21 is specifically connected to the locking block 19 through a threaded structure. The locking pin 21 can be inserted into the locking groove 82 by rotating it. The slide block 5 is provided with a second driving component 18 for driving the slide plate 6 to slide so that the syringe is inserted into the dispensing nozzle 15. The driving component is specifically a second cylinder hinged between the slide block 5 and the slide plate 6. The clamping fixture 8 includes a U-shaped groove 84 and an ear-end groove 83 into which the ear end of the syringe can be inserted. An elastic U-shaped rubber pad 85 is provided in the U-shaped groove 84. It should be noted that the ear end of the syringe specifically refers to the edge part of the syringe near the piston rod extension position.

[0041] Specifically, the elastic U-shaped rubber pad 85 includes a bottom end 851 and two elastic ends 852. The bottom end 851 is fixedly connected to the clamping fixture 8. The clamping fixture 8 is provided with movable cavities for the two elastic ends 852 to move. A sliding cavity is provided on one side of each movable cavity on the clamping fixture 8. A wedge block 23 is slidably connected in the sliding cavity. One end of the wedge block 23 extends out of the sliding cavity and abuts against the slide plate 6. A spring 22 is fixedly connected between the other end of the wedge block 23 and the clamping fixture 8. The elastic end 852 is provided with a wedge-shaped fitting part that matches the wedge block 23. When the clamping fixture 8 is installed in place on the slide plate 6, the two elastic ends 852 close together and stick tightly to the outer wall of the syringe.

[0042] When the clamping fixture 8 is in operation, the syringe is installed on the clamping fixture 8, so that the ear end of the syringe is inserted into the ear end slot 83 and the cylindrical end of the syringe is inserted into the elastic U-shaped rubber pad 85. The clamping fixture 8 is then inserted into the slot and the locking pin 21 is locked. During this process, the wedge 23 is subjected to the pressure of the slide plate 6, moves inward along the sliding cavity and compresses the spring 22. As the wedge 23 moves, its inclined surface interacts with the wedge-shaped adapter on the elastic end 852, pushing the elastic end 852 to expand outward from the movable cavity, forming a close embrace and tight fit against the outer wall of the syringe, ensuring that the syringe can be firmly clamped. The second drive assembly 18 drives the slide plate 6 to move downward, so that the syringe is inserted into the glue outlet 15, thereby realizing the glue path connection between the glue storage tank 9 and the syringe.

[0043] The above method achieves precise clamping, positioning, and insertion of the syringe, and can adapt to syringes of different specifications, thus having good applicability.

[0044] In this embodiment, as Figure 7 As shown, a displacement sensor 12 is provided on the slide block 5 above the clamping fixture 8. A third driving assembly 24 for driving the displacement sensor 12 to slide longitudinally is provided on the slide block 5. A push pin 11 that can abut against the piston rod of the syringe is provided on the sensor.

[0045] Specifically, the third drive assembly 24 includes a lead screw 241 rotatably connected to the slide block 5, a first synchronous pulley 244 fixed to the lead screw 241, a motor 246 fixed to the slide block 5, a second synchronous pulley 245 fixed to the output end of the motor 246, and a synchronous belt drivingly connecting the first synchronous pulley 244 and the second synchronous pulley 245. The lead screw 241 is a μ-level high-precision lead screw 241. A bracket 243 is slidably connected to the slide block 5 through a slide rail pair 242. The displacement sensor 12 is fixed to the bracket 243. The bracket 243 is provided with a threaded groove that is threadedly connected to the lead screw 241.

[0046] In the above method, by setting the μ-level high-precision lead screw 241, the displacement accuracy of the ejector pin 11 can be effectively improved. During the operation, the ejector pin 11 first presses the piston rod of the syringe down into place, and then moves up to the approximate position of the piston rod after the glue is filled. Under the pressure of the glue, the piston rod will rise and lift the ejector pin 11 a small distance to trigger the displacement sensor 12 to work, so as to send a corresponding signal for subsequent blocking of the glue.

[0047] In this embodiment, as Figure 8As shown, the glue delivery tube 14 is a flexible tube, and a pad 25 is fixed on the slide block 5. The slide block 5 is equipped with a first cylinder 26 for pressing the glue delivery tube 14 against the pad 25 to block the glue flow. By actuating the first cylinder 26, the glue delivery tube 14 can be quickly and accurately pressed against the pad 25, thereby effectively blocking the flow of glue. When it is necessary to continue dispensing glue, the first cylinder 26 moves in the opposite direction, releasing the pressure on the glue delivery tube 14, and the glue flow can be quickly restored. This instant blocking and restoring function improves the controllability and flexibility of the glue dispensing process.

[0048] In this embodiment, as Figure 1 As shown, the laboratory dispensing and filling equipment also includes a PLC controller, an electronic scale 4, a machine base 3, and a machine cover 2 fixed on the machine base 3. The machine frame 1 is fixed on the machine base 3 located inside the machine cover 2. The electronic scale 4 is placed on the machine base 3 located on one side of the machine frame 1. The electronic scale 4, the first drive assembly 7, the second drive assembly 18, the third drive assembly 24, the displacement sensor 12, the vacuum device, and the first cylinder 26 are electrically connected to the PLC controller. The electronic scale 4 is used to weigh the syringe filled with glue and send the weighing data to the PLC controller in real time.

[0049] In the above method, the electronic scale 4 communicates with the PLC controller, which can send the weighing data to the PLC controller in real time. This allows the PLC controller to monitor the change in the amount of glue during the dispensing process in real time and make timely feedback and adjustments as needed. This helps to detect and correct deviations in the dispensing process in a timely manner, ensuring the stability and consistency of the dispensing process and improving the accuracy and reliability of dispensing. After multiple corrections, the dispensing error of the glue in the syringe of the laboratory dispensing equipment of this application can be controlled within 0.02 grams. In the early stage, each syringe needs to be weighed on the electronic scale 4 after it is filled. After multiple weighings, when the weight of each syringe is within the error range, the weighing step can be eliminated. The algorithm of the correction process adopts the existing technology, which will not be described in detail in this embodiment.

[0050] In this embodiment, as Figure 9 As shown, the bottom of the frame 1 is provided with two half-bucket covering blocks 27 and a pressure block 28 that fixes the half-bucket covering blocks 27 to the frame 1. The pressure block 28 is detachably connected to the frame 1 by bolts. The glue storage tank 9 is covered and fixed between the two half-bucket covering blocks 27. The glue storage tank 9 is fixed at the bottom of the frame 1 by combining the two half-bucket covering blocks 27 and the pressure block 28, which realizes the stable covering and convenient disassembly and assembly of the glue storage tank 9.

[0051] In this embodiment, the clamping fixture 8 can be set to one, two or more, which can realize multi-station glue dispensing operation.

[0052] This application also discloses a dispensing and dispensing method, including any of the laboratory dispensing and dispensing equipment described above, and further comprising the following steps:

[0053] S1. Install the syringe on the clamping fixture 8. The third drive assembly 24 first drives the ejector pin 11 to press the piston rod of the syringe down into place, and then drives the ejector pin 11 to move up to a waiting position. This position should ensure that the ejector pin 11 will not interfere with the subsequent dispensing process of the adhesive.

[0054] S2. The first drive component 7 drives the pressure plate 10 to press down a certain distance. The vacuum device evacuates the sealed chamber and maintains the pressure for a period of time, so that the air bubbles in the adhesive float to the surface of the liquid and are discharged through the vacuum device as much as possible. The pressure plate 10 continues to press down. When the pressure plate 10 comes into contact with the liquid surface in the adhesive storage tank 9, the adhesive is dispensed into the syringe from bottom to top under the pressure generated by the pressure plate 10 pressing down.

[0055] S3. After the adhesive pushes the piston rod upward to the waiting position, the ejector pin 11 continues to be pushed upward to the target set value of the displacement sensor 12. The first cylinder 26 is ejected, the adhesive is blocked, and the dispensing of the adhesive in the syringe is completed.

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A laboratory dispensing and filling apparatus, comprising a frame (1), a slide (5) slidably connected to the frame (1), and a first driving assembly (7) for driving the slide (5) to slide longitudinally, characterized in that: It also includes a glue storage tank (9) set on the frame (1), a pressure plate (10) set on the slide (5), and a clamping fixture (8) detachably connected to the slide (5) for clamping the syringe. The pressure plate (10) is slidably adapted to the glue storage tank (9), and a sealed chamber is formed between the pressure plate (10) and the glue storage tank (9). The pressure plate (10) is provided with a liquid outlet, and the liquid outlet and the syringe on the clamping fixture (8) are connected by a glue delivery tube (14). The pressure plate (10) is configured such that when the pressure plate (10) is pressed down, the glue liquid in the sealed chamber is dispensed into the syringe from bottom to top. The laboratory dispensing and dispensing equipment also includes a vacuum device and an electric ball valve (17). The pressure plate (10) is provided with a vacuum port. The vacuum port, the electric ball valve (17) and the vacuum device are connected in sequence through a vacuum tube (16). A displacement sensor (12) is provided on the slide (5) above the clamping fixture (8). A third driving assembly (24) for driving the displacement sensor (12) to slide longitudinally is provided on the slide (5). A push pin (11) is provided on the displacement sensor (12) to abut against the piston rod of the syringe. The glue delivery tube (14) is a flexible tube, and a pad (25) is fixed on the slide (5). A first cylinder (26) is provided on the slide (5) to press the glue delivery tube (14) against the pad (25) to block the glue liquid. The third drive assembly (24) first drives the ejector pin (11) to press the piston rod of the syringe down to the position, and then drives the ejector pin (11) to move up to a waiting position. This position should ensure that the ejector pin (11) will not interfere with the subsequent dispensing process of the adhesive. The piston rod will rise under the pressure of the adhesive and push the ejector pin (11) a small distance to trigger the displacement sensor (12) to work, thereby sending a corresponding signal to block the adhesive in the future. A glue dispensing nozzle (15) is detachably connected to the slide (5) below the clamping fixture (8) via a threaded structure. A connector (13) is inserted into the liquid inlet. The glue delivery tube (14) is connected between the glue dispensing nozzle (15) and the connector (13). A slide plate (6) is slidably connected to the slide (5) longitudinally. Two locking blocks (19) are fixedly connected to the slide plate (6). A groove is formed between the two locking blocks (19) and the slide plate (6). A positioning pin (20) is fixed on the slide plate (6) located in the groove. The clamping fixture (8) is provided with a positioning pin (20). The positioning groove (81) is adapted, the clamping fixture (8) is inserted into the groove, the clamping fixture (8) is provided with a locking groove (82), any one of the clamping blocks (19) is provided with a locking pin (21) extending into the locking groove (82), the slide (5) is provided with a second driving component (18) for driving the slide plate (6) to slide so that the syringe is inserted into the dispensing nozzle (15), the clamping fixture (8) includes a U-shaped groove (84) and an ear end groove (83) for the ear end of the syringe to be inserted, and an elastic U-shaped rubber pad (85) is provided in the U-shaped groove (84); The elastic U-shaped rubber pad (85) includes a bottom end (851) and two elastic ends (852). The bottom end (851) is fixedly connected to the clamping fixture (8). The clamping fixture (8) is provided with movable cavities for the two elastic ends (852) to move. The clamping fixture (8) is provided with a sliding cavity on one side of each movable cavity. A wedge (23) is slidably connected in the sliding cavity. One end of the wedge (23) extends out of the sliding cavity and abuts against the slide plate (6). The other end of the wedge (23) is fixedly connected to the clamping fixture (8) with a spring (22). The elastic end (852) is provided with a wedge-shaped fitting part that matches the wedge (23). When the clamping fixture (8) is installed in place on the slide plate (6), the two elastic ends (852) hug and stick to the outer wall of the syringe.

2. The laboratory dispensing and filling equipment according to claim 1, characterized in that: The third drive assembly (24) includes a lead screw (241) rotatably connected to the slide (5), a first synchronous pulley (244) fixed to the lead screw (241), a motor (246) fixed to the slide (5), a second synchronous pulley (245) fixed to the output end of the motor (246), and a synchronous belt that drives between the first synchronous pulley (244) and the second synchronous pulley (245). A bracket (243) is slidably connected to the slide (5) via a slide rail pair (242). The displacement sensor (12) is fixed to the bracket (243). The bracket (243) is provided with a threaded groove that is threadedly connected to the lead screw (241).

3. The laboratory dispensing and filling equipment according to claim 1, characterized in that: The laboratory dispensing and dispensing equipment also includes a PLC controller, an electronic scale (4), a machine base (3), and a machine cover (2) fixed on the machine base (3). The machine frame (1) is fixed on the machine base (3) located inside the machine cover (2). The electronic scale (4) is placed on the machine base (3) located on one side of the machine frame (1). The electronic scale (4) is electrically connected to the PLC controller. The electronic scale (4) is used to weigh the syringe filled with glue and send the weighing data to the PLC controller in real time.

4. The laboratory dispensing and filling equipment according to claim 1, characterized in that: The bottom of the frame (1) is provided with two half-barrel covering blocks (27) and a pressure block (28) that fixes the half-barrel covering blocks (27) to the frame (1). The pressure block (28) is detachably connected to the frame (1) by bolts. The glue storage barrel (9) is covered and fixed between the two half-barrel covering blocks (27).

5. A dispensing and filling method, comprising the laboratory dispensing and filling equipment as described in any one of claims 1 to 4, characterized in that: It also includes the following steps: S1. Install the syringe on the clamping fixture (8). The third drive assembly (24) first drives the ejector pin (11) to press the piston rod of the syringe down into place, and then drives the ejector pin (11) to move up to a waiting position. S2. The first drive component (7) drives the pressure plate (10) to press down a certain distance. After the vacuum device evacuates the sealed chamber and maintains the pressure for a period of time, the pressure plate (10) continues to press down. When the pressure plate (10) comes into contact with the liquid surface in the glue storage tank (9), the glue is dispensed into the syringe from bottom to top. S3. When the adhesive pushes the piston rod to the waiting position, the ejector pin (11) is pushed to move upward to the target setting value of the displacement sensor (12), the first cylinder (26) is ejected, the adhesive is blocked, and the dispensing of the adhesive in the syringe is completed.

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