Quantitative dispensing cylinder
By using switch valves and servo motor drives in the quantitative dispensing cylinder, the sealing performance and glue quantity accuracy problems are solved, and a smaller structure and higher glue output accuracy are achieved.
Patent Information
- Application Number
- CN202421985329.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The existing quantitative dispensing cylinders have problems with poor sealing performance and low glue accuracy, which is mainly due to the blockage of the valve core due to the fiber structure in the glue, which affects the sealing properties of the rubber outlet and the rubber inlet.
A switch valve is used to control the dispensing port and the inlet port at the same time. The servo motor drives the drive rod to achieve quantitative glue output, combining the sealing ring and guide rail structure to ensure sealing performance, and improving the accuracy of glue output through the precise movement of the servo motor.
A smaller structural design is achieved, while improving sealing performance and dispensing accuracy, reducing the possibility of glue stuck in the drive shaft, and ensuring the accuracy and reliability of glue production.
Smart Images
Figure CN223184839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of dispensing, and particularly to a quantitative dispensing cylinder. Background Art
[0002] A quantitative dispensing cylinder is a device that can achieve quantitative dispensing. The current quantitative dispensing cylinder has the following structure: it includes a glue feeding device and a dispensing valve located below the glue feeding device. The dispensing valve includes a glue inlet and a glue outlet. Spool valves are provided at both the glue inlet and the glue outlet to achieve the closing of the glue inlet and the glue outlet. When closing the glue inlet and the pouring outlet, the spool valve extends to the feeding port or the discharging port to achieve the closing of the feeding port or the discharging port. However, since the glue fluid contains fibrous structures, the glue will be blocked between the spool valve, the inner wall of the glue inlet or the inner wall of the glue outlet, thereby affecting the sealing performance of the glue outlet or the glue inlet. Summary of the Utility Model
[0003] The technical problem solved by the utility model is to provide a quantitative dispensing cylinder that improves the sealing performance of the dispensing valve and the accuracy of the glue volume.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a quantitative dispensing cylinder, including a glue storage cylinder, a dispensing valve is provided at the bottom of the glue storage cylinder, and a quantitative glue pressing mechanism for pressing the glue in the glue storage cylinder out is provided above the glue storage cylinder;
[0005] The dispensing valve includes a valve body, a valve cavity is provided inside the valve body, a dispensing port for discharging glue is provided at the bottom of the valve body, a glue inlet for injecting glue is provided on one side of the valve body, and the dispensing port and the glue inlet are both communicated with the valve cavity;
[0006] The valve cavity includes a first cavity, a second cavity and a third cavity that are sequentially communicated. The first cavity is communicated with the dispensing port, the third cavity is communicated with the glue inlet, the radial area of the second cavity is larger than the radial areas of the first cavity and the third cavity, so that one side surface of the second cavity close to the third cavity constitutes a first abutting surface, and one side surface of the second cavity close to the first cavity constitutes a second abutting surface. A switching valve is provided inside the second cavity, and a driving cylinder is provided on one side of the valve body. The driving shaft of the driving cylinder extends into the second cavity and is fixedly connected to the switching valve. When the driving cylinder drives the switching valve to move towards the third cavity, the switching valve abuts against the first abutting surface. When the driving cylinder drives the switching valve to move towards the first cavity, the switching valve abuts against the second abutting surface.
[0007] Furthermore, the quantitative glue pressing mechanism includes a screw rod and a servo motor for driving the rotation of the screw rod. A driving nut is arranged on the screw rod. A driving rod is also included. One end of the driving rod is fixedly connected to the driving nut, and the other end of the driving rod extends into the glue storage cylinder. A piston is arranged at the end of the driving rod extending into the glue storage cylinder, and the outer periphery of the piston contacts the inner surface of the glue storage cylinder.
[0008] Furthermore, a sealing ring groove is arranged on the side surface of the piston, and a sealing ring is arranged in the sealing ring groove.
[0009] Furthermore, an installation plate is also included. The servo motor, the glue storage cylinder and one side of the dispensing valve are respectively fixedly connected to the installation plate. A guide rail is arranged on the installation plate, and a slider is slidably connected to the guide rail. The slider is fixedly connected to the driving rod.
[0010] Furthermore, a detection piece connected to the driving rod is also included. A detection sensor cooperating with the detection piece is arranged on the installation plate, and the detection sensor is used to detect whether the driving rod moves to the topmost position.
[0011] The beneficial effect of the present utility model is that the setting of this structure can realize the control of the dispensing port and the glue inlet by one switching valve, making this structure more compact. When closing the dispensing port and the glue inlet, the switching valve abuts against the first abutting surface and the second abutting surface respectively, thus ensuring the sealing performance and reducing the possibility of the glue jamming the driving shaft. At the same time, in this structure, the servo motor is used to drive the driving rod to lift to realize quantitative glue dispensing, which can make the glue dispensing more accurate, thereby improving the dispensing accuracy of this dispensing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic structural diagram of the quantitative dispensing cylinder of the embodiment of the present application.
[0013] Figure 2 It is a schematic cross-sectional structural diagram of the quantitative dispensing cylinder of the embodiment of the present application.
[0014] Figure 3 It is a cross-sectional view of the dispensing valve of the quantitative dispensing cylinder of the embodiment of the present application.
[0015] The labels in the figure are: glue storage cylinder 1, dispensing valve 2, dispensing port 3, glue inlet 4, first cavity 5, second cavity 6, third cavity 7, switching valve 8, driving cylinder 9, first abutting surface 10, second abutting surface 11, screw rod 12, servo motor 13, driving rod 14, driving nut 15, piston 16, sealing ring 17, installation plate 18, guide rail 19, detection piece 20, detection sensor 21. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings.
[0017] As Figure 1 shown, the embodiment of the present application discloses a quantitative dispensing cylinder, including a glue storage cylinder 1. A dispensing valve 2 is provided at the bottom of the glue storage cylinder 1, and a quantitative glue pressing mechanism for pressing the glue in the glue storage cylinder 1 out is provided above the glue storage cylinder 1.
[0018] The dispensing valve 2 includes a valve body. A valve cavity is provided inside the valve body. A dispensing port 3 for discharging glue is provided at the bottom of the valve body. An inlet port 4 for inletting glue is provided on one side of the valve body. Both the dispensing port 3 and the inlet port 4 are communicated with the valve cavity.
[0019] The valve cavity includes a first cavity 5, a second cavity 6, and a third cavity 7 that are sequentially communicated. The first cavity 5 is communicated with the dispensing port 3, the third cavity 7 is communicated with the inlet port 4. The radial area of the second cavity 6 is larger than the radial areas of the first cavity 5 and the third cavity 7, so that one side surface of the second cavity 6 close to the third cavity 7 constitutes a first abutting surface 10, and one side surface of the second cavity 6 close to the first cavity 5 constitutes a second abutting surface 11. A switching valve 8 is provided inside the second cavity 6. A driving cylinder 9 is provided on one side of the valve body. The driving shaft of the driving cylinder 9 extends into the second cavity 6 and is fixedly connected to the switching valve 8. When the driving cylinder 9 drives the switching valve 8 to move towards the third cavity 7, the switching valve 8 abuts against the first abutting surface 10. When the driving cylinder 9 drives the switching valve 8 to move towards the first cavity 5, the switching valve 8 abuts against the second abutting surface 11.
[0020] During specific use, when performing the glue filling operation, at this time, the glue pressing end of the quantitative glue pressing mechanism is located at the bottom of the valve cavity. The driving cylinder 9 drives the switching valve 8 to move towards the first cavity 5. At this time, the switching valve 8 abuts against the second abutting surface 11, and the dispensing port 3 is in a closed state. The inlet port 4 is communicated with the valve cavity. Connect the inlet port 4 to an external glue supply device. The glue pressing end of the quantitative glue pressing mechanism moves upward. Under the action of vacuum suction, the glue is sucked into the glue storage cylinder 1. When the glue filling is completed, when the driving cylinder 9 drives the switching valve 8 to move towards the third cavity 7, the switching valve 8 abuts against the first abutting surface 10. At this time, the dispensing port 3 is communicated with the valve cavity, and the inlet port 4 is in a closed state. When performing the dispensing operation, the quantitative glue pressing mechanism moves downward quantitatively, so that the glue can be quantitatively output from the dispensing port 3.
[0021] In this structure, the setting of this structure can enable a switching valve 8 to control the dispensing port 3 and the glue inlet 4 simultaneously, making this structure more compact. When the dispensing port 3 and the glue inlet 4 are closed, the switching valve 8 abuts against the first abutting surface 10 and the second abutting surface 11 respectively, thus ensuring the sealing performance and reducing the possibility of glue jamming the drive shaft at the same time.
[0022] In this embodiment, the quantitative glue pressing mechanism includes a screw rod 12 and a servo motor 13 for driving the screw rod 12 to rotate. A driving nut 15 is arranged on the screw rod 12. A driving rod 14 is also included. One end of the driving rod 14 is fixedly connected to the driving nut 15, and the other end of the driving rod 14 extends into the glue storage cylinder 1. A piston 16 is arranged at the end of the driving rod 14 extending into the glue storage cylinder 1, and the outer periphery of the piston 16 contacts the inner surface of the glue storage cylinder 1.
[0023] Specifically, when dispensing glue, the servo motor 13 drives the screw rod 12 to rotate. The rotation of the screw rod 12 can cause the nut on the screw rod 12 to move up and down, and then the nut drives the driving rod 14 to make an accurate downward pressing movement, so as to press out the glue quantitatively.
[0024] Since the servo motor 13 has the characteristic of accurate movement, in this structure, the method of driving the driving rod 14 to move up and down by the servo motor 13 to achieve quantitative glue dispensing can make the glue dispensing more accurate, thus improving the dispensing accuracy of this glue dispensing cylinder.
[0025] In this embodiment, a sealing ring 17 groove is arranged on the side of the piston 16, and a sealing ring 17 is arranged in the sealing ring 17 groove.
[0026] In this structure, by arranging the sealing ring 17 on the side of the piston 16, the sealing performance at the top of the glue storage cylinder 1 is ensured, and further, pollutants are prevented from entering the glue storage cylinder 1 and contaminating the internal glue.
[0027] In this embodiment, a mounting plate 18 is further included. The servo motor 13, the glue storage cylinder 1 and one side of the dispensing valve 2 are respectively fixedly connected to the mounting plate 18. A guide rail 19 is arranged on the mounting plate 18, and a slider is slidably connected to the guide rail 19. The slider is fixedly connected to the driving rod 14.
[0028] Specifically, during the up and down movement of the driving rod 14, due to the arrangement of the guide rail 19 and the slider, the verticality of the driving rod 14 during its up and down movement is ensured, so that the driving rod 14 will not be skewed during movement.
[0029] In this embodiment, a detection piece 20 connected to the driving rod 14 is further included. A detection sensor 21 cooperating with the detection piece 20 is arranged on the mounting plate 18, and the detection sensor 21 is used to detect whether the driving rod 14 moves to the topmost position.
[0030] Specifically, when the detection sensor 21 detects the detection piece 20, it means that the driving rod 14 has moved to the topmost position at this time. At this time, the servo motor 13 stops driving, so that the driving rod 14 no longer moves upward, thereby preventing the bottom end of the driving rod 14 from moving out of the glue storage cylinder 1 when it continues to move upward, and thus preventing pollutants from falling into the glue storage cylinder 1 from the top, which may cause pollution of the glue.
[0031] In the above specific embodiments, the purpose, technical solution and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. Quantitative dispensing cylinder, characterized by: It comprises a glue storage cylinder (1), a glue dispensing valve (2) is provided at the bottom of the glue storage cylinder (1), and a quantitative glue pressing mechanism for driving the glue in the glue storage cylinder (1) to press out is provided above the glue storage cylinder (1); The dispensing valve (2) comprises a valve body, a valve cavity is provided in the valve body, a dispensing port (3) for discharging glue is provided at the bottom of the valve body, and a glue inlet (4) for injecting glue is provided on one side of the valve body, and the dispensing port (3) and the glue inlet (4) are both communicated with the valve cavity; The valve cavity comprises a first cavity (5), a second cavity (6) and a third cavity (7) which are connected in sequence, the first cavity (5) is connected to the dispensing port (3), the third cavity (7) is connected to the glue inlet (4), the radial area of the second cavity (6) is larger than the radial areas of the first cavity (5) and the third cavity (7), so that the second cavity (6) forms a first abutting surface (10) on a side close to the third cavity (7), and the second cavity (6) forms a second abutting surface (11) on a side close to the first cavity (5). ), a switch valve (8) is provided in the second cavity (6), and a driving cylinder (9) is provided on one side of the valve body. The driving shaft of the driving cylinder (9) extends into the second cavity (6) and is fixedly connected to the switch valve (8). When the driving cylinder (9) drives the switch valve (8) to move toward the third cavity (7), the switch valve (8) abuts against the first abutting surface (10); when the driving cylinder (9) drives the switch valve (8) to move toward the first cavity (5), the switch valve (8) abuts against the second abutting surface (11).
2. The quantitative dispensing cylinder according to claim 1, characterized in that: The quantitative glue pressing mechanism includes a screw (12) and a servo motor (13) for driving the screw (12) to rotate, the screw (12) is provided with a driving nut (15), and also includes a driving rod (14), one end of the driving rod (14) is fixedly connected to the driving nut (15), and the other end of the driving rod (14) extends into the glue storage cylinder (1), and the end of the driving rod (14) extending into the glue storage cylinder (1) is provided with a piston (16), and the outer periphery of the piston (16) contacts the inner surface of the glue storage cylinder (1).
3. The quantitative dispensing cylinder according to claim 2, characterized in that: A sealing ring (17) groove is provided on the side of the piston (16), and a sealing ring (17) is provided in the sealing ring (17) groove.
4. The quantitative dispensing cylinder according to claim 2, characterized in that: The invention also includes a mounting plate (18), wherein the servo motor (13), the glue storage cylinder (1) and one side of the dispensing valve (2) are fixedly connected to the mounting plate (18), and a guide rail (19) is provided on the mounting plate (18). A slider is slidably connected to the guide rail (19), and the slider is fixedly connected to the driving rod (14).
5. The quantitative dispensing cylinder according to claim 4, characterized in that: The invention also comprises a detection piece (20) connected to the driving rod (14); a detection sensor (21) matched with the detection piece (20) is provided on the mounting plate (18); the detection sensor (21) is used to detect whether the driving rod (14) moves to the top end.