Dispensing pump

Abstract

The utility model provides a dispensing pump. The technical problems that an existing dispensing pump is uneven in stress and inaccurate in control are solved. Comprising a lifting supporting mechanism which comprises a lifting driving mechanism, a fixed platform and a lifting platform, and the fixed platform and the lifting platform are distributed up and down. The injectors are annularly arranged by taking the center of the lifting platform as a circle center; comprising a main body and a piston, first ends of the tee joints penetrate through the fixed platform and are connected with the main body outlet of the injector, second ends of the tee joints are used for being connected with a liquid supply barrel, and third ends of the tee joints are used for being connected with dispensing heads. The dispensing device is widely applied to the technical field of dispensing.

Description

Technical Field

[0001] The present application relates to a dispensing pump, and more specifically, to a dispensing pump for explosion-proof workshops. Background Art

[0002] A dispensing pump is a device used to control the flow and pressure of glue and is widely used in industrial dispensing operations. It can precisely control the dispensing of glue, ensuring uniform distribution of glue, improving product quality and production efficiency.

[0003] A dispensing pump typically uses piston motion to generate pressure, drawing glue from a container. This pressure is then squeezed through a hose to push the glue toward a dispensing head or applicator. This structure allows the pump to precisely control the flow and pressure of the glue, enabling accurate dot or line coating.

[0004] When glue is required to be dispensed at multiple locations on a product simultaneously, multiple dispensing heads distributed in a straight line are usually used. Existing dispensing pumps also use a straight line distribution, and multiple pistons are prone to uneven force, resulting in inaccurate dispensing control and difficulty in ensuring dispensing quality. Summary of the Invention

[0005] In order to solve the problems of uneven force and inaccurate control of existing dispensing pumps, the technical solution adopted in this application is to provide a dispensing pump, comprising:

[0006] The lifting support mechanism includes a lifting drive mechanism, a fixed platform and a lifting platform distributed above and below, and the lifting drive mechanism is connected to the lifting platform;

[0007] A plurality of syringes are arranged in a ring with the center of the lifting platform as the center of the circle; the syringes include a main body and a piston, and the piston is connected to the lifting platform; and

[0008] A plurality of tees, the first end of which passes through the fixed platform and is connected to the main body outlet of the syringe, the second end is used to be connected to the liquid supply barrel, and the third end is used to be connected to the dispensing head.

[0009] Preferably, the lifting drive mechanism includes a driving motor, a ball screw and a screw fixing seat. The driving motor is arranged on a fixed platform, and the output end is connected to one end of the ball screw. The other end of the ball screw is rotatably connected to the screw fixing seat, and the nut of the ball screw is connected to the lifting platform.

[0010] Preferably, the second ends of the plurality of tees are each connected to a liquid suction valve, and the third ends of the plurality of tees are each connected to a liquid pumping valve.

[0011] Preferably, the liquid suction valve and the liquid pumping valve are both pneumatic valves.

[0012] Preferably, a plurality of liquid suction valves are located in a liquid suction valve box, and a plurality of liquid pumping valves are located in a liquid pumping valve box; both the liquid suction valve box and the liquid pumping valve box are filled with liquid so that the liquid suction valves and the liquid pumping valves are immersed in the liquid.

[0013] Preferably, a plurality of guide mechanisms are distributed between the fixed platform and the screw fixing seat, and the guide mechanisms include a guide shaft and a linear bearing sleeved on the guide shaft, and the linear bearing is connected to the lifting platform.

[0014] Preferably, the ball screw is located at the center of the lifting platform.

[0015] Preferably, a lower limit switch is provided at the bottom of the screw fixing seat, and an upper limit switch is provided at the top of the fixing platform.

[0016] Preferably, the upper limit switch, the lower limit switch and the drive motor are all explosion-proof components.

[0017] The beneficial effects of this utility model are provided by a lifting support mechanism, a syringe, and a tee. During use, the lifting platform drives the pistons up and down, causing the pistons to push inward or pull outward, thereby achieving fluid replenishment and injection through the tee. The syringes are arranged in a ring, and the lifting drive mechanism drives the syringe pistons to push inward or pull outward, resulting in short torque and uniform force. Compared with the linear distribution method of the prior art, it is more stable, more accurate in controlling the dispensing amount, and better guarantees the dispensing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0021] Figure 3 for Figure 2 AA cross-sectional view of .

[0022] Explanation of symbols in the figure:

[0023] 1. Fixed platform; 2. Lifting platform; 3. Syringe; 4. Main body; 5. Piston; 6. Tee; 7. Drive motor; 8. Ball screw; 9. Screw fixing seat; 10. Nut; 11. Support upper seat; 12. Lower limit switch; 13. Upper limit switch; 14. Guide shaft; 15. Linear bearing; 16. Servo motor; 17. Reducer; 18. Suction valve; 19. Pumping valve; 20. Suction valve box; 21. Pumping valve box; 22. Through hole; 23. Back plate. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0026] The dispensing pump provided in the embodiment of the present application is now described.

[0027] See also Figure 1 、 Figure 2 , is a schematic diagram of the structure of a dispensing pump. The dispensing pump includes:

[0028] The lifting support mechanism includes a lifting drive mechanism, a fixed platform 1 and a lifting platform 2 distributed above and below, and the lifting drive mechanism is connected to the lifting platform 2;

[0029] Several syringes 3 are arranged in a ring with the center of the lifting platform 2 as the center of the circle; they include a main body 4 and a piston 5, and the piston 5 is connected to the lifting platform 2; and

[0030] A plurality of tees 6 have a first end passing through the fixed platform 1 and connected to the outlet of the main body 4 of the syringe 3 , a second end for connecting to the liquid supply barrel, and a third end for connecting to the dispensing head.

[0031] During use, the lifting platform 2 drives the pistons 5 up and down, pushing or pulling them inward, thereby enabling fluid replenishment and dispensing via the tee. During aspiration, the original liquid from the supply barrel enters the syringe 3 through the second and first ends of the tee 6, completing the fluid replenishment process. During dispensing, the original liquid in the syringe 3 enters the dispensing head through the first and third ends of the tee 6. This process is repeated until all air in the syringe 3 is expelled, and dispensing can begin.

[0032] Several syringes 3 are arranged in a circular shape on the lifting platform 2, with a shorter torque and uniform force. Compared with the straight-line distribution form of the existing technology, it is more stable, the control of the dispensing amount is more accurate, and the dispensing quality is well guaranteed.

[0033] Specifically, the lifting drive mechanism can adopt any form of a structure that can realize the lifting function, such as chain or belt drive, gear rack drive, hydraulic drive, screw drive, etc.

[0034] In one embodiment, the lifting drive mechanism adopts a screw drive. The lifting drive mechanism includes a drive motor 7, a ball screw 8, and a screw fixing base 9. The drive motor 7 is disposed on the fixed platform 1, and its output end is connected to one end of the ball screw 8. The other end of the ball screw 8 is rotatably connected to the screw fixing base 9. The nut 10 of the ball screw 8 is connected to the lifting platform 2. The upper portion of the ball screw 8 is rotatably connected to a support upper base 11, which is fixedly connected to the fixed platform 1. Preferably, the ball screw 8 is located at the center of the lifting platform 2, a lower limit switch 12 is provided at the bottom of the screw fixing base 9, and an upper limit switch 13 is provided at the top of the fixed platform 1. The drive motor 7 drives the ball screw 8 to rotate, driving the nut 10 to move linearly along the ball screw 8, thereby driving the fixed platform 1 to move synchronously. During the rotation of the ball screw 8, the support upper base 11 and the screw fixing base 9 provide support, ensuring stable and reliable rotation.

[0035] Furthermore, a plurality of guide mechanisms are arranged between the fixed platform 1 and the screw fixing seat 9. The guide mechanisms include a guide shaft 14 and a linear bearing 15 sleeved on the guide shaft 14. The linear bearing 15 is connected to the lifting platform 2. The lifting platform 2 can slide along the guide shaft 14 through the linear bearing 15.

[0036] Furthermore, the driving motor 7 includes a servo motor 16 and a reducer 17 to improve control accuracy and meet various dispensing control requirements.

[0037] See also Figure 2 and Figure 3 In one embodiment, the second ends of several of the tees 6 are each connected to a suction valve 18, and the third ends of several of the tees 6 are each connected to a dispensing valve 19. During suction, the suction valve 18 opens, the dispensing valve 19 closes, and the lifting drive mechanism drives the piston 5 outward. The original liquid in the liquid supply barrel is sucked into the syringe 3 through the suction valve 18 and the tees 6, completing the liquid replenishment. During dispensing, the suction valve 18 closes, the dispensing valve 19 opens, and the lifting drive mechanism drives the piston 5 inward. The original liquid in the syringe 3 enters the dispensing head through the tees 6 and the dispensing valve 19 for dispensing.

[0038] Furthermore, the suction valves 18 and the pumping valves 19 are both pneumatic valves. Several of the suction valves 18 are located in a suction valve box 20, while several of the pumping valves 19 are located in a pumping valve box 21. The suction valve box 20 and the pumping valve box 21 are filled with liquid, allowing the suction valves 18 and the pumping valves 19 to be immersed in the liquid. This prevents the generation of gas in the pipeline when the valve bodies are switched, ensuring precise dispensing and further ensuring dispensing quality.

[0039] Furthermore, the top covers of the liquid suction valve box 20 and the liquid pumping valve box 21 are both provided with through holes 22 to facilitate pipeline connection.

[0040] In one embodiment, a cabinet is further provided. A lifting support mechanism, a syringe 3 and a tee 6 are provided on the left side of the back plate 23 of the cabinet, and a liquid injection valve box 21 and a liquid suction valve box 20 are placed on the right side.

[0041] Furthermore, the upper limit switch 13, lower limit switch 12, and servo motor 16 of this embodiment are all explosion-proof components, meeting the requirements for equipment in explosive environments. Therefore, this device is suitable for precise dispensing operations in workshops with explosion-proof requirements.

[0042] The utility model is cleverly designed. First, a number of syringes 3 arranged in a ring are provided, and the pistons 5 of the syringes 3 are driven inward or outward by a lifting drive mechanism. The torque is short and the force is evenly distributed. Compared with the one-line distribution form of the prior art, it is more stable, the control of the dispensing amount is more accurate, and the dispensing quality is well guaranteed. Secondly, the three-way valve 6 connects the liquid suction valve 18 and the liquid injection valve 19 to realize the glue replenishment and glue injection actions. In addition, the liquid suction valve 18 and the liquid injection valve 19 are both pneumatic valves and are always immersed in the liquid, so that gas can be avoided in the pipeline when the valve body is switched, which meets the requirements of precise dispensing and further ensures the quality of dispensing. Finally, the upper limit switch 13 and the servo motor 16 are explosion-proof components, which can meet the requirements of equipment in explosive environments, and are therefore suitable for precise dispensing operations in workshops with explosion-proof requirements.

[0043] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A dispensing pump, characterized in that: include: A lifting support mechanism, comprising a lifting drive mechanism, a fixed platform and a lifting platform distributed above and below, wherein the lifting drive mechanism is connected to the lifting platform; A plurality of syringes are arranged in a ring with the center of the lifting platform as the center of the circle; the syringes include a main body and a piston, and the piston is connected to the lifting platform; and A plurality of tees, a first end of which passes through the fixed platform and is connected to the main body outlet of the syringe, a second end of which is used to be connected to the liquid supply barrel, and a third end of which is used to be connected to the dispensing head.

2. The dispensing pump according to claim 1, characterized in that: The lifting drive mechanism includes a drive motor, a ball screw and a screw fixing seat. The drive motor is arranged on the fixed platform, and the output end is connected to one end of the ball screw. The other end of the ball screw is rotatably connected to the screw fixing seat, and the nut of the ball screw is connected to the lifting platform.

3. The dispensing pump according to claim 1 or 2, characterized in that: The second ends of the plurality of tees are connected to a liquid suction valve, and the third ends of the plurality of tees are connected to a liquid pumping valve.

4. The dispensing pump according to claim 3, characterized in that: The liquid suction valve and the liquid pumping valve are both pneumatic valves.

5. The dispensing pump according to claim 4, characterized in that: Several of the liquid suction valves are located in the liquid suction valve box, and several of the liquid pumping valves are located in the liquid pumping valve box; the liquid suction valve box and the liquid pumping valve box are both filled with liquid so that the liquid suction valves and the liquid pumping valves are immersed in the liquid.

6. The dispensing pump according to claim 2, characterized in that: A plurality of guide mechanisms are arranged between the fixed platform and the lead screw fixing seat. The guide mechanisms include a guide shaft and a linear bearing sleeved on the guide shaft. The linear bearing is connected to the lifting platform.

7. The dispensing pump according to claim 2, characterized in that: The ball screw is located at the center of the lifting platform.

8. The dispensing pump according to claim 2, wherein: A lower limit switch is provided at the bottom of the screw fixing seat, and an upper limit switch is provided at the top of the fixing platform.

9. The dispensing pump according to claim 8, characterized in that: The upper limit switch, lower limit switch and drive motor are all explosion-proof components.

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