Spiral glue jet valve

Abstract

The present application provides a kind of spiral glue valve, it is related to glue valve technical field, spiral glue valve includes mounting seat, pivot, eccentric structure, motor, transmission pair, glue pipe and nozzle;Pivot is vertically arranged and rotatably installed in mounting seat, and the cavity that passes through along its axial direction is equipped in pivot;Eccentric structure is installed in the lower end of pivot and has the eccentric hole that is communicated with cavity, and there is eccentric moment between the axis of eccentric hole and the axis of pivot;Motor is vertically installed in mounting seat and is spaced apart from pivot in horizontal direction, and the spindle of motor is drivingly connected with pivot by transmission pair;Glue pipe is arranged in cavity, and the upper end of glue pipe is extended from pivot and is connected to mounting seat, and the lower end passes through eccentric hole and is connected to the hole wall of eccentric hole;Nozzle is arranged in the lower end of glue pipe.The present application can improve the working reliability and glue compatibility of glue valve, and reduce the machining difficulty of motor spindle.

Description

Technical Field

[0001] This invention relates to the field of adhesive spraying valve technology, and more specifically, to a spiral adhesive spraying valve. Background Technology

[0002] In the traditional automotive body weld sealing and adhesive application process, spiral adhesive spray valves are commonly used. These valves can actively swirl adhesive to create a continuous spiral adhesive line, thereby improving weld coverage. In related technologies, the adhesive typically flows directly through the internal cavity of the motor spindle during dispensing. However, this approach has several drawbacks: First, because the adhesive must flow through the inside of the motor spindle, it can easily seep into the motor, causing contamination and burnout, thus affecting the reliability of the spiral adhesive spray valve. Second, to avoid high temperatures affecting motor operation, heat-requiring adhesives cannot be used, which affects the spray valve's compatibility with different adhesive types. Third, the motor spindle needs to be machined into a hollow structure for adhesive application, increasing the machining difficulty of the motor spindle. Summary of the Invention

[0003] The problem solved by this invention is: how to improve the working reliability and adhesive compatibility of the spiral spray valve, and reduce the machining difficulty of the motor spindle.

[0004] To address the aforementioned problems, this invention provides a spiral glue spraying valve, comprising a mounting base, a rotating shaft, an eccentric structure, a motor, a transmission pair, a glue dispensing tube, and a nozzle. The rotating shaft is vertically oriented and rotatably mounted on the mounting base, and has a cavity extending through it along its axial direction. The eccentric structure is mounted on the lower end of the rotating shaft and has an eccentric hole communicating with the cavity, with an eccentric moment between the axis of the eccentric hole and the axis of the rotating shaft. The motor is vertically mounted on the mounting base and horizontally spaced from the rotating shaft, and the main shaft of the motor is connected to the rotating shaft via the transmission pair. The glue dispensing tube passes through the cavity, with its upper end extending out of the rotating shaft and connected to the mounting base, and its lower end passing through the eccentric hole and connected to the hole wall. The nozzle is located at the lower end of the glue dispensing tube.

[0005] Optionally, the eccentric structure includes an eccentric seat and a connecting bearing. The eccentric seat is located at the lower end of the rotating shaft, and the connecting bearing is embedded in the eccentric seat. The inner hole of the connecting bearing forms the eccentric hole.

[0006] Optionally, the upper part of the eccentric seat is sleeved on the rotating shaft, and the lower part is formed with an eccentric mounting hole communicating with the cavity. The eccentric mounting hole and the eccentric hole are coaxially arranged, and the connecting bearing is embedded in the eccentric mounting hole.

[0007] Optionally, the mounting base includes a mounting body and a side mounting platform. A vertically extending mounting cavity is formed within the mounting body, and the side mounting platform is located on one side of the mounting body. The rotating shaft is mounted within the mounting cavity, and the motor is mounted on the side mounting platform.

[0008] Optionally, the mounting body includes an upper fixing seat, a connecting cover, a protective sleeve, and a lower fixing seat that are detachably connected from top to bottom, and the mounting cavity extends sequentially through the upper fixing seat, the connecting cover, the protective sleeve, and the lower fixing seat.

[0009] Optionally, the mounting base further includes a first support bearing embedded in the upper fixed base, a second support bearing embedded in the connecting cover, and a third support bearing embedded in the protective sleeve, with the rotating shaft passing through the first support bearing, the second support bearing, and the third support bearing in sequence.

[0010] Optionally, a countersunk hole is formed at the upper end of the mounting cavity; the spiral adhesive spray valve further includes a connecting block connected to the upper end of the mounting body, the connecting block having a vertically penetrating through hole, the through hole and the countersunk hole together forming a limiting cavity; the adhesive dispensing tube includes a tube body and a limiting flange disposed at the upper end of the tube body, the limiting flange being accommodated within the limiting cavity, so that the upper end of the adhesive dispensing tube is engaged with the mounting base.

[0011] Optionally, the spiral glue spray valve further includes a glue inlet module, which is connected to the upper end of the connecting block, and the glue inlet of the glue inlet module is connected to the through hole. The glue inlet module is used to supply glue to the glue outlet pipe in sequence through the glue inlet and the through hole, and a sealing ring is provided between the hole wall of the through hole and the outer wall of the limiting flange.

[0012] Optionally, the transmission pair includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is drivenly connected to the main shaft of the motor, the driven pulley is drivenly connected to the rotating shaft, and the transmission belt is wound around the driving pulley and the driven pulley respectively.

[0013] Optionally, the spiral adhesive spray valve further includes a rotary encoder, which is disposed on the mounting base and is used to detect the rotation angle of the motor's main shaft.

[0014] The beneficial effects of the spiral glue spray valve of the present invention include: the inside of the glue outlet tube is used for glue passage, which serves as the glue circuit system. The motor drives the rotating shaft to rotate through the transmission pair to achieve spiral glue spraying, which serves as the rotary drive system. Since the rotating shaft is vertically mounted on the mounting base, and the motor is also vertically mounted on the mounting base and spaced horizontally upward from the rotating shaft, this indirectly ensures that the glue circuit system and the rotary drive system are completely physically isolated. In this way, on the one hand, it can prevent glue from entering the motor from the glue circuit, preventing motor contamination and burnout, and improving the working reliability of the glue spray valve; on the other hand, it can reduce the heat conduction between the glue circuit and the motor, so that the high temperature of the glue will not excessively affect the operation of the motor, making the glue compatible with heat-requiring glues such as high-temperature hot melt glue, thereby improving the glue type compatibility of the glue spray valve; and on the other hand, it can ensure that the motor spindle does not need to be machined into a high-precision hollow structure, thereby reducing the machining difficulty of the motor spindle. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the spiral adhesive spray valve according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the spiral adhesive spray valve according to an embodiment of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of part A of the spiral adhesive spray valve; Figure 4 for Figure 2 A schematic diagram of the exploded structure of part A of the spiral adhesive spray valve; Figure 5 for Figure 2 Enlarged schematic diagram of part B of the spiral adhesive spray valve.

[0016] Explanation of reference numerals in the attached figures: 1-Mounting base; 11-Mounting body; 111-Upper fixed base; 1111-Counterhead; 112-Connecting cover; 113-Protective sleeve; 114-Lower fixed base; 12-Side mounting platform; 13-First support bearing; 14-Second support bearing; 15-Third support bearing; 16-Rotary encoder; 2-Rotating shaft; 21-Cavity; 3-Eccentric structure; 31-Eccentric hole; 32-Eccentric seat; 321-Eccentric mounting hole; 33-Connecting bearing; 4-Motor; 41-Main shaft; 5-Transmission pair; 51-Driving pulley; 52-Driven pulley; 53-Transmission belt; 6-Dispensing tube; 61-Tube body; 62-Limiting flange; 7-Nozzle; 8-Connecting block; 81-Through hole; 811-Sealing ring; 9-Limiting cavity; 10-Dispensing module; 101-Dispensing port. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0018] In the attached figures, the X-axis represents the front-to-back position, with the positive direction of the X-axis representing the front and the negative direction representing the rear. The Y-axis represents the left-to-right position, with the positive direction representing the left and the negative direction representing the right. The Z-axis represents the up-down position, with the positive direction representing the top and the negative direction representing the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are for ease of description and simplification of the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0019] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] This invention provides a spiral adhesive spraying valve, which will be described in detail below with reference to specific embodiments.

[0022] like Figure 1 and Figure 2As shown in the figure, an embodiment of the present invention provides a spiral glue spraying valve, including a mounting base 1, a rotating shaft 2, an eccentric structure 3, a motor 4, a transmission pair 5, a glue dispensing tube 6, and a nozzle 7; the rotating shaft 2 is vertically arranged and rotatably mounted on the mounting base 1, and a cavity 21 is provided inside the rotating shaft 2 that extends along its axial direction; the eccentric structure 3 is mounted on the lower end of the rotating shaft 2 and has an eccentric hole 31 communicating with the cavity 21, and there is an eccentric moment between the axis of the eccentric hole 31 and the axis of the rotating shaft 2; the motor 4 is vertically mounted on the mounting base 1 and is horizontally spaced from the rotating shaft 2, and the main shaft 41 of the motor 4 is connected to the rotating shaft 2 through the transmission pair 5; the glue dispensing tube 6 passes through the cavity 21, the upper end of the glue dispensing tube 6 extends out of the rotating shaft 2 and is connected to the mounting base 1, and the lower end passes through the eccentric hole 31 and is connected to the hole wall of the eccentric hole 31; the nozzle 7 is located at the lower end of the glue dispensing tube 6.

[0023] It should be noted that the eccentricity between the axis of the eccentric hole 31 and the axis of the rotating shaft 2 means that the axis of the eccentric hole 31 is parallel to the axis of the rotating shaft 2 and there is a certain distance between them, which makes the axis of the eccentric hole 31 deviate from the axis of the rotating shaft 2.

[0024] Specifically, the working process of this spiral glue spraying valve is as follows: The main shaft 41 of the motor 4 rotates, which drives the rotating shaft 2 to rotate through the transmission pair 5. Since the eccentric structure 3 at the lower end of the rotating shaft 2 has an eccentric hole 31, the lower end of the glue dispensing tube 6 passes through the eccentric hole 31. Therefore, after the rotating shaft 2 rotates, it will carry the lower end of the glue dispensing tube 6 to make an eccentric rotational motion. At the same time, since the upper end of the glue dispensing tube 6 is connected to the mounting base 1, the upper end of the glue dispensing tube 6 will remain basically still (with slight deflection) when the lower end of the glue dispensing tube 6 makes a conical surface movement with the upper end as the apex. This allows the glue flowing out of the glue dispensing tube 6 to generate centrifugal force and be thrown out by the nozzle 7. With the help of the robot driving the glue spraying valve to move along the weld seam direction, a continuous spiral glue line can be formed on the surface of the workpiece, ultimately realizing spiral glue spraying.

[0025] In this embodiment, the dispensing tube 6 is used for gluing, serving as the glue path system. The motor 4 drives the rotating shaft 2 to rotate via the transmission pair 5 to achieve spiral glue spraying, serving as the rotary drive system. Since the rotating shaft 2 is vertically mounted on the mounting base 1, and the motor 4 is also vertically mounted on the mounting base 1 and horizontally spaced apart from the rotating shaft 2, this indirectly ensures complete physical isolation between the glue path system and the rotary drive system. This prevents glue from entering the motor 4, thus preventing contamination and burnout, and improving the reliability of the glue spraying valve. On the other hand, it reduces heat conduction between the glue path and the motor 4, ensuring that the high temperature of the glue does not excessively affect the operation of the motor 4, allowing the glue to be used with heat-requiring adhesives such as high-temperature hot melt adhesives, thereby improving the adhesive compatibility of the glue spraying valve. Furthermore, it eliminates the need to process the motor spindle into a high-precision hollow structure, thus reducing the machining difficulty of the motor spindle. In addition, since the rotating shaft 2 has a cavity 21 that runs through it along its axis, and the glue dispensing tube 6 passes through the cavity 21, the glue dispensing tube 6 and the rotating shaft 2 can avoid each other. The eccentric movement of the glue dispensing tube 6 and the rotational movement of the rotating shaft 2 will not interfere with each other, thus ensuring normal glue spraying.

[0026] Optionally, the dispensing tube 6 and the eccentric hole 31 can be fitted with an interference fit. This arrangement allows the lower end of the dispensing tube 6 to be connected to the wall of the eccentric hole 31, ensuring that the dispensing tube 6 can reliably rotate eccentrically with the rotating shaft 2 and improving the trajectory accuracy of the eccentric rotation.

[0027] Optionally, such as Figure 2 and Figure 3 As shown, the eccentric structure 3 includes an eccentric seat 32 and a connecting bearing 33. The eccentric seat 32 is located at the lower end of the rotating shaft 2, and the connecting bearing 33 is embedded in the eccentric seat 32. The inner hole of the connecting bearing 33 forms the eccentric hole 31.

[0028] It should be noted that the connecting bearing 33 itself is a non-eccentric bearing, but since the connecting bearing 33 is not concentric with the rotating shaft 2 when it is installed in the eccentric seat 32, this ensures that the inner hole of the connecting bearing 33 is eccentric relative to the rotating shaft 2, and thus serves as the eccentric hole 31.

[0029] In this optional embodiment, the eccentric seat 32 and the connecting bearing 33 allow the rotating shaft 2 to drive the lower end of the dispensing tube 6 to rotate eccentrically. Furthermore, since the eccentric structure 3 includes the eccentric seat 32 and the connecting bearing 33, it achieves a split design. When a single part wears out, only the corresponding part needs to be replaced, rather than the entire eccentric structure 3, thus reducing maintenance costs.

[0030] Optionally, such as Figure 3 and Figure 4As shown, the upper part of the eccentric seat 32 is sleeved on the rotating shaft 2, and the lower part forms an eccentric mounting hole 321 that communicates with the cavity 21. The eccentric mounting hole 321 is coaxially arranged with the eccentric hole 31, and the connecting bearing 33 is embedded in the eccentric mounting hole 321.

[0031] Specifically, the eccentricity between the axis of the eccentric mounting hole 321 and the axis of the rotating shaft 2 is equal to the eccentricity between the axis of the eccentric hole 31 and the axis of the rotating shaft 2, so as to ensure that the eccentric mounting hole 321 is coaxial with the eccentric hole 31.

[0032] In this optional embodiment, since the eccentric mounting hole 321 and the eccentric hole 31 are coaxially arranged, when the connecting bearing 33 is embedded in the eccentric mounting hole 321, the inner hole of the connecting bearing 33 is eccentric relative to the rotating shaft 2 and can be used as the eccentric hole 31.

[0033] Optionally, the nozzle 7 and the dispensing tube 6 can be detachably connected, and the eccentric structure 3 and the rotating shaft 2 can be detachably connected. This configuration allows both the eccentric structure 3 and the nozzle 7 to be removed and replaced. By replacing the eccentric structure 3 with different eccentric holes 31 and the nozzle 7 with different diameters, the glue line width and spiral width can be flexibly adjusted to adapt to different weld specifications and improve the adaptability of the glue spraying valve. Specifically, the nozzle 7 can be threaded to the dispensing tube 6, and the eccentric structure 3 can be threaded to the rotating shaft 2 to achieve a detachable connection.

[0034] Optionally, such as Figure 2 As shown, the mounting base 1 includes a mounting body 11 and a side mounting platform 12. A vertically extending mounting cavity is formed in the mounting body 11, and the side mounting platform 12 is located on one side of the mounting body 11. The rotating shaft 2 is installed in the mounting cavity, and the motor 4 is installed on the side mounting platform 12.

[0035] In this optional embodiment, the rotating shaft 2 is built into the mounting cavity of the mounting body 11. This surrounding design of the rotating shaft 2 effectively isolates it from the glue application area below, thereby preventing glue splashing from contaminating the rotating shaft 2. In addition, since the side mounting platform 12 is located on one side of the mounting body 11, when the rotating shaft 2 and the motor 4 are respectively mounted on the mounting body 11 and the side mounting platform 12, it can be ensured that the rotating shaft 2 and the motor 4 are horizontally spaced apart, ensuring that the glue circuit system and the rotary drive system are isolated from each other.

[0036] Optionally, such as Figure 2As shown, the mounting body 11 includes an upper fixing seat 111, a connecting cover 112, a protective sleeve 113, and a lower fixing seat 114 that are detachably connected from top to bottom. The mounting cavity extends sequentially through the upper fixing seat 111, the connecting cover 112, the protective sleeve 113, and the lower fixing seat 114.

[0037] Specifically, the upper fixing seat 111, the connecting cover 112, the protective sleeve 113 and the lower fixing seat 114 can be detachably connected to each other by means of, for example, bolts.

[0038] Specifically, the side wall of the connecting cover 112 is provided with a through opening communicating with the mounting cavity. The side mounting platform 12 and the upper fixed seat 111 are an integrated structure. The side mounting platform 12 is provided with a vertical through mounting hole. The lower end of the motor 4 is located on the upper side of the side mounting platform 12. Its main shaft 41 passes through the mounting hole and extends to the lower part of the side mounting platform 12. One end of the transmission pair 5 is connected to the part of the main shaft 41 of the motor 4 that extends to the lower part of the side mounting platform 12, and the other end extends into the mounting cavity through the through opening to connect with the rotating shaft 2.

[0039] In this optional embodiment, the upper fixing seat 111, connecting cover 112, protective sleeve 113 and lower fixing seat 114 are detachably connected from top to bottom, so that the inner cavities of each part can jointly form the required mounting cavity for the installation of the rotating shaft 2. Since the upper fixing seat 111, connecting cover 112, protective sleeve 113 and lower fixing seat 114 are detachably connected to each other, it is convenient to disassemble and maintain each component, reducing the maintenance difficulty of the mounting seat 1.

[0040] Optionally, such as Figure 2 As shown, the mounting base 1 also includes a first support bearing 13 embedded in the upper fixed base 111, a second support bearing 14 embedded in the connecting cover 112, and a third support bearing 15 embedded in the protective sleeve 113. The rotating shaft 2 passes through the first support bearing 13, the second support bearing 14, and the third support bearing 15 in sequence.

[0041] In this optional embodiment, since the rotating shaft 2 adopts a multi-point support structure composed of a first support bearing 13, a second support bearing 14 and a third support bearing 15, it has high radial and axial positioning accuracy, which is conducive to bearing high-speed rotation such as 30,000 rpm, thus making it easier to adapt to high-speed automated glue application conditions; at the same time, the rotating shaft 2 has small runout and runs smoothly, which can ensure the trajectory accuracy of the eccentric rotation of the lower end of the glue tube 6, thereby ensuring the uniformity and consistency of the spiral glue line and ensuring the glue application quality.

[0042] Optionally, such as Figure 2 and Figure 5As shown, the upper end of the mounting cavity forms a countersunk hole 1111; the spiral spray valve also includes a connecting block 8 connected to the upper end of the mounting body 11, the connecting block 8 having a vertically penetrating through hole 81, the through hole 81 and the countersunk hole 1111 together forming a limiting cavity 9; the glue dispensing tube 6 includes a tube body 61 and a limiting flange 62 located at the upper end of the tube body 61, the limiting flange 62 being accommodated in the limiting cavity 9 so that the upper end of the glue dispensing tube 6 is engaged with the mounting base 1.

[0043] Specifically, the connecting block 8 and the mounting body 11 can be detachably connected. For example, the connecting block 8 can be detachably connected to the mounting body 11 by bolts. Specifically, the pipe body 61 and the limiting flange 62 can be welded together to form an integrated structure. Furthermore, it is understood that the dispensing hose 6 is not a flexible hose. When the lower end of the dispensing hose 6 rotates eccentrically, the upper end of the dispensing hose 6 will remain essentially stationary but will have a slight deflection. Therefore, the size of the limiting cavity 9 can be slightly larger than the size of the limiting flange 62 (including diameter and height) to prevent the limiting flange 62 from being completely compressed and affecting the movement of the dispensing hose 6.

[0044] In this optional embodiment, by housing the limiting flange 62 of the dispensing tube 6 within the limiting cavity 9, the limiting flange 62 is limited by the limiting cavity 9, so that the upper end of the dispensing tube 6 can be engaged with the mounting base 1. Because the upper end of the dispensing tube 6 is engaged with the mounting base 1, the upper end of the dispensing tube 6 will remain basically still (with slight deflection) when the lower end moves eccentrically, so that the entire dispensing tube 6 roughly makes a conical surface movement with the upper end as the apex, so that the nozzle 7 can cooperate with the dispensing valve to form a spiral glue line.

[0045] Optionally, such as Figure 2 and Figure 5 As shown, the spiral glue spray valve also includes a glue inlet module 10, which is connected to the upper end of the connecting block 8. The glue inlet 101 of the glue inlet module 10 is connected to the through hole 81. The glue inlet module 10 is used to supply glue to the glue outlet pipe 6 in sequence through the glue inlet 101 and the through hole 81. A sealing ring 811 is provided between the hole wall of the through hole 81 and the outer wall of the limiting flange 62.

[0046] Specifically, the glue dispensing module 10 and the connecting block 8 can be detachably connected. For example, the glue dispensing module 10 can be detachably connected to the connecting block 8 by bolts.

[0047] It should be noted that the glue injection module 10 may have a glue path opening and closing function to control the glue supply from the glue inlet 101 to the glue outlet tube 6. For example, a flow channel is formed inside the glue injection module 10, and the lower end of the flow channel constitutes the glue inlet 101. The glue injection module 10 is also provided with a piston rod that can move up and down. The piston rod moves up and down relative to the glue injection module 10 to open or block the glue inlet 101, thereby realizing the glue path opening and closing function.

[0048] In this optional embodiment, the sealing ring 811 is disposed between the wall of the through hole 81 and the outer wall of the limiting flange 62, which can realize the sealing connection between the dispensing tube 6 and the through hole 81, thereby indirectly realizing the sealing connection between the dispensing tube 6 and the inlet 101, and thus preventing leakage of adhesive during the process of the adhesive flowing from the inlet 101 to the dispensing tube 6.

[0049] Optionally, the glue dispensing module 10 and the connecting block 8 have two contacting mating surfaces, and a sealing ring is provided between the two mating surfaces. This arrangement ensures the sealing between the glue dispensing module 10 and the connecting block 8, further preventing leakage of glue as it flows from the glue inlet 101 to the glue outlet pipe 6. In addition, since the sealing ring 811 and the sealing ring are concentrated near the upper end of the glue outlet pipe 6, routine maintenance only requires disassembling the upper glue dispensing module 10, without disassembling the rotating shaft 2 and the motor 4. This makes maintenance convenient, reduces downtime, and is suitable for the high-speed production requirements of automotive production lines. Furthermore, the simple structure of the two seals and the small number of sealing points reduce the difficulty of disassembling and assembling the seals while ensuring the sealing effect.

[0050] Optionally, the transmission pair 5 is a belt drive structure or a gear drive structure.

[0051] Preferably, the transmission pair 5 is a belt drive structure, specifically, as shown in the example below. Figure 2 As shown, the transmission pair 5 includes a driving pulley 51, a driven pulley 52, and a transmission belt 53. The driving pulley 51 is connected to the main shaft 41 of the motor 4, the driven pulley 52 is connected to the rotating shaft 2, and the transmission belt 53 is wound around the driving pulley 51 and the driven pulley 52 respectively.

[0052] It is understandable that, since the driving pulley 51 is connected to the main shaft 41 of the motor 4 and the driven pulley 52 is connected to the rotating shaft 2, and the transmission belt 53 is wound around the driving pulley 51 and the driven pulley 52 respectively, when the main shaft 41 of the motor 4 rotates, it can drive the driving pulley 51 to rotate, and the driven pulley 52 is driven by the transmission belt 53. After the driven pulley 52 rotates, it drives the rotating shaft 2 to rotate, thus realizing the transmission from the main shaft 41 to the rotating shaft 2.

[0053] In this optional embodiment, the driving pulley 51, the driven pulley 52 and the transmission belt 53 form a belt drive structure. The belt drive can be adapted to transmission situations where the center distance between the two shafts is large, so as to ensure that there is sufficient distance between the main shaft 41 and the rotating shaft 2, thereby effectively ensuring the isolation relationship between the rubber circuit system and the rotary drive system.

[0054] Optionally, such as Figure 2 As shown, the spiral glue spraying valve also includes a rotary encoder 16, which is mounted on the mounting base 1 and is used to detect the rotation angle of the main shaft 41 of the motor 4.

[0055] Specifically, the rotary encoder 16 can be located on the mounting base 1 near the main shaft 41.

[0056] In this optional embodiment, by configuring a rotary encoder 16 to detect the rotation angle of the main shaft 41 of the motor 4, the rotation angle of the main shaft 41 of the motor 4 can be accurately grasped, thereby indirectly and accurately grasping the circumferential position of the nozzle 7, and thus accurately controlling the circumferential position of the start and end of the adhesive application, ensuring the accuracy of the adhesive application position, and adapting to the intermittent adhesive application requirements of complex welds.

[0057] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A spiral adhesive spray valve, characterized in that, The system includes a mounting base (1), a rotating shaft (2), an eccentric structure (3), a motor (4), a transmission pair (5), a dispensing tube (6), and a nozzle (7); the rotating shaft (2) is vertically arranged and rotatably mounted on the mounting base (1), and the rotating shaft (2) has a cavity (21) extending through it along its axial direction; the eccentric structure (3) is mounted on the lower end of the rotating shaft (2) and has an eccentric hole (31) communicating with the cavity (21), and there is an eccentric moment between the axis of the eccentric hole (31) and the axis of the rotating shaft (2); the motor... The machine (4) is vertically mounted on the mounting base (1) and is horizontally spaced from the rotating shaft (2). The main shaft (41) of the motor (4) is connected to the rotating shaft (2) through the transmission pair (5). The glue outlet tube (6) is inserted into the cavity (21). The upper end of the glue outlet tube (6) extends out of the rotating shaft (2) and is connected to the mounting base (1). The lower end passes through the eccentric hole (31) and is connected to the hole wall of the eccentric hole (31). The nozzle (7) is located at the lower end of the glue outlet tube (6).

2. The spiral adhesive spray valve according to claim 1, characterized in that, The eccentric structure (3) includes an eccentric seat (32) and a connecting bearing (33). The eccentric seat (32) is located at the lower end of the rotating shaft (2). The connecting bearing (33) is embedded in the eccentric seat (32). The inner hole of the connecting bearing (33) forms the eccentric hole (31).

3. The spiral adhesive spray valve according to claim 2, characterized in that, The upper part of the eccentric seat (32) is sleeved on the rotating shaft (2), and the lower part has an eccentric mounting hole (321) that communicates with the cavity (21). The eccentric mounting hole (321) and the eccentric hole (31) are coaxially arranged, and the connecting bearing (33) is embedded in the eccentric mounting hole (321).

4. The spiral adhesive spray valve according to claim 1, characterized in that, The mounting base (1) includes a mounting body (11) and a side mounting platform (12). A vertically extending mounting cavity is formed in the mounting body (11), and the side mounting platform (12) is located on one side of the mounting body (11). The rotating shaft (2) is installed in the mounting cavity, and the motor (4) is installed on the side mounting platform (12).

5. The spiral adhesive spray valve according to claim 4, characterized in that, The mounting body (11) includes an upper fixing seat (111), a connecting cover (112), a protective sleeve (113), and a lower fixing seat (114) that are detachably connected from top to bottom. The mounting cavity extends sequentially through the upper fixing seat (111), the connecting cover (112), the protective sleeve (113), and the lower fixing seat (114).

6. The spiral adhesive spray valve according to claim 5, characterized in that, The mounting base (1) further includes a first support bearing (13) embedded in the upper fixed base (111), a second support bearing (14) embedded in the connecting cover (112) and a third support bearing (15) embedded in the protective sleeve (113), and the rotating shaft (2) passes through the first support bearing (13), the second support bearing (14) and the third support bearing (15) in sequence.

7. The spiral adhesive spray valve according to claim 4, characterized in that, The upper end of the mounting cavity forms a countersunk hole (1111); the spiral spray valve also includes a connecting block (8) connected to the upper end of the mounting body (11), the connecting block (8) has a vertical through hole (81), the through hole (81) and the countersunk hole (1111) together form a limiting cavity (9); the glue outlet tube (6) includes a tube body (61) and a limiting flange (62) provided at the upper end of the tube body (61), the limiting flange (62) is accommodated in the limiting cavity (9) so that the upper end of the glue outlet tube (6) is engaged with the mounting base (1).

8. The spiral adhesive spray valve according to claim 7, characterized in that, It also includes a glue inlet module (10), which is connected to the upper end of the connecting block (8), and the glue inlet (101) of the glue inlet module (10) is connected to the through hole (81). The glue inlet module (10) is used to supply glue to the glue outlet pipe (6) in sequence through the glue inlet (101) and the through hole (81), and a sealing ring (811) is provided between the hole wall of the through hole (81) and the outer wall of the limiting flange (62).

9. The spiral adhesive spray valve according to any one of claims 1-8, characterized in that, The transmission pair (5) includes a driving pulley (51), a driven pulley (52) and a transmission belt (53). The driving pulley (51) is connected to the main shaft (41) of the motor (4), the driven pulley (52) is connected to the rotating shaft (2), and the transmission belt (53) is wound around the driving pulley (51) and the driven pulley (52) respectively.

10. The spiral adhesive spray valve according to any one of claims 1-8, characterized in that, It also includes a rotary encoder (16), which is mounted on the mounting base (1) and is used to detect the rotation angle of the main shaft (41) of the motor (4).

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