Rotary glue gun

Abstract

The utility model provides a kind of rotary glue gun, including glue supply mechanism and rotary glue spraying mechanism, glue supply mechanism includes glue gun seat and needle valve module, glue gun seat is equipped with glue inlet channel, accommodating cavity and glue supply channel, glue inlet channel is communicated with accommodating cavity, and glue supply channel is communicated with accommodating cavity;Needle valve module is worn in accommodating cavity, and the inside of needle valve module is equipped with switch channel;Rotary glue spraying mechanism includes rotary seat, rotary glue shaft and rotary drive module, rotary seat is connected with glue gun seat, and rotary seat is equipped with rotary installation cavity, and glue supply channel is communicated with rotary installation cavity;Rotary glue shaft is worn in rotary installation cavity and is rotatably connected with rotary seat, and glue shaft channel is formed glue shaft outlet in the end of rotary glue shaft and rotary seat, and glue shaft channel is equipped with in rotary glue shaft;Rotary drive module is connected with rotary glue shaft;Rotary drive module drives rotary glue shaft to rotate, so that glue shaft channel is communicated with glue supply channel, and glue in glue supply channel can flow out from glue shaft outlet by glue shaft channel.

Description

Technical Field

[0001] This utility model relates to the field of glue spraying technology, and in particular to a rotary glue spray gun. Background Technology

[0002] Throughout the development of the manufacturing industry, adhesives, as crucial bonding materials, have had their application methods and technological levels inextricably linked to industry production efficiency and product quality. In the early days of manufacturing, adhesive applications were relatively basic, with application largely relying on manual labor. This manual method was not only extremely inefficient and unable to meet the demands of large-scale production, but also depended entirely on the operator's experience to control the thickness and coverage of the adhesive. This easily led to uneven application and missed areas, resulting in unstable bonding strength and severely impacting the overall quality and lifespan of the product. With the continuous advancement of industrial technology, the manufacturing industry has placed increasingly stringent demands on the application of adhesives. On the one hand, product structures are becoming increasingly complex, leading to ever-higher standards for bond strength, stability, and durability. On the other hand, to adapt to the efficient operation of automated production lines, the adhesive application process needs to achieve precise and uniform coverage to ensure consistent product quality and further improve production efficiency. Against this backdrop, traditional manual adhesive application methods are no longer sufficient to meet the needs of industrial development, and automated adhesive spraying equipment has emerged. To achieve uniform glue application, existing automated glue spraying equipment typically employs a rotating nozzle design. The traditional rotary spray gun is designed as follows: the glue dispensing end of the glue dispensing module is directly connected to the rotary joint of the rotary module, and the driven gear of the rotary module is fitted onto the rotary nozzle. The motor of the rotary module drives the drive wheel to rotate, which in turn drives the driven wheel meshing with it to rotate, ultimately achieving the rotation of the nozzle by the rotary joint to spray glue. However, this structural design, which directly integrates the rotating module with the glue supply module (glue dispensing module), has obvious drawbacks. Specifically, it suffers from extremely poor sealing reliability. During long-term, high-frequency rotary glue spraying operations, the connection between the rotating joint and the glue dispensing end is prone to sealing failure, leading to frequent glue leakage. This not only wastes a large amount of adhesive material but also contaminates the product and the production environment. In severe cases, it can even cause equipment failure and affect the normal operation of the production line. Secondly, it is difficult to repair and replace components. Due to the high degree of integration between the rotating module and the glue supply module, if a component fails, the entire integrated unit often needs to be disassembled for repair or replacement. This not only increases maintenance costs but also significantly prolongs equipment downtime and reduces production efficiency. Furthermore, in actual production scenarios, it is often necessary to perform adhesive spraying on workpieces with special structures, such as the inner perimeter of square boxes or round packaging boxes. The inner perimeter space of such workpieces is usually quite narrow, requiring a high degree of spatial adaptability from the adhesive spraying equipment. However, traditional rotary spray guns, due to the additional rotating module connected to the dispensing end of the dispensing module, result in a significant increase in the overall volume of the dispensing end. When facing small radius spaces (such as the narrow inner perimeter of workpieces), the rotary nozzle cannot flexibly extend and achieve effective adhesive spraying, easily leading to problems such as blind spots and uneven adhesive application. The spraying effect falls far short of product quality requirements, severely restricting its application in adhesive spraying scenarios for workpieces with special structures and failing to meet the diverse production needs of the market.

[0003] Therefore, given the significant shortcomings of existing traditional rotary spray guns in terms of sealing reliability, maintenance convenience, and space adaptability, it is necessary to provide a rotary glue spray gun that can reduce the risk of glue leakage, is easy to maintain, and can effectively spray glue in a small radius space. Utility Model Content

[0004] The purpose of this invention is to provide a rotary glue gun that can reduce the risk of glue leakage, is easy to maintain, and can effectively spray glue in a small radius space.

[0005] To achieve the above objectives, this utility model provides a rotary glue gun, including a glue supply mechanism and a rotary glue spraying mechanism. The glue supply mechanism includes a glue gun base and a needle valve module. The glue gun base has a glue inlet channel, a receiving cavity, and a glue supply channel. One end of the glue inlet channel forms a liquid inlet on the outside of the glue gun base, and the other end of the glue inlet channel communicates with the receiving cavity to form a first communication point. One end of the glue supply channel communicates with the receiving cavity to form a second communication point. The needle valve module passes through the receiving cavity and blocks the position between the first and second communication points. The needle valve module has a switch channel inside, which opens or closes to achieve communication between the first and second communication points. Or disconnect; the rotary glue spraying mechanism includes a rotary seat, a rotary glue shaft, and a rotary drive module. The rotary seat is connected to the glue supply gun seat, and the rotary seat has a rotary mounting cavity. The other end of the glue supply channel is connected to the rotary mounting cavity. The rotary glue shaft passes through the rotary mounting cavity and is rotatably connected to the rotary seat. The rotary glue shaft has a glue shaft channel for dispensing glue, and the glue shaft channel forms a glue shaft outlet at the end of the rotary glue shaft that exits the rotary seat. The rotary drive module is connected to the rotary glue shaft. The rotary drive module drives the rotary glue shaft to rotate, so that the glue shaft channel is connected to the glue supply channel, thereby allowing the glue in the glue supply channel to flow out from the glue shaft outlet through the glue shaft channel.

[0006] Preferably, the needle valve module includes a glue supply nozzle and a switching valve assembly. The glue supply nozzle passes through the accommodating cavity and blocks the position between the first connection and the second connection. The switching channel is disposed within the glue supply nozzle, with one end of the switching channel forming a switching channel inlet communicating with the first connection on the outside of the glue supply nozzle, and the other end of the switching channel forming a switching channel outlet communicating with the second connection on the outside of the glue supply nozzle. The switching valve assembly is disposed on the glue supply nozzle, and the switching valve assembly passes through the switching channel and extends to the outside of the switching channel outlet. The switching channel outlet is opened or closed by moving the switching valve assembly. Preferably, the switching valve assembly includes a needle valve mounting seat, a piston, a needle valve body, and a switching drive module. The needle valve mounting seat is mounted on the dispensing nozzle, and a needle valve cavity is provided inside the needle valve mounting seat. The piston is movably disposed within the needle valve cavity. One end of the needle valve body is connected to the piston, and the other end of the needle valve body first penetrates the needle valve mounting seat, then extends into and through the switching channel, and finally extends to the outside of the switching channel outlet. The switching drive module is disposed on the needle valve mounting seat and is used to drive the piston and the needle valve body to move together, so that the needle valve body opens or blocks the switching channel outlet. Preferably, the switch drive module includes a switch drive mounting base and a solenoid valve. The needle valve cavity forms an opening on the outside of the needle valve mounting base. The switch drive mounting base is connected to the needle valve mounting base and covers the opening. The solenoid valve is disposed on the switch drive mounting base. The switch drive mounting base is provided with an air inlet channel, a first air outlet channel, and a second air outlet channel. One end of the air inlet channel forms an air inlet for gas to enter on the outside of the switch drive mounting base. The other end of the air inlet channel is connected to the solenoid valve. One end of the first air outlet channel and one end of the second air outlet channel are respectively connected to the solenoid valve. The other end of the first air outlet channel communicates with the opening and is located on one side of the piston movement direction. The other end of the second air outlet channel communicates with the needle valve cavity and is located on the other side of the piston movement direction. The solenoid valve is used to control one of the first air outlet channel and the second air outlet channel to communicate with the air inlet channel. Preferably, the switch drive mounting base is further provided with a third air outlet channel, one end of the third air outlet channel is connected to the air inlet channel, the other end of the third air outlet channel is connected to the accommodating cavity, and the direction of movement of the piston driven by the air inlet of the third air outlet channel is the same as the direction of movement of the piston driven by the air inlet of the second air outlet channel. Preferably, the switching valve assembly further includes an elastic element connected between the piston and the inner wall of the needle valve mounting seat along the movement direction of the piston. The elastic element is used to provide an elastic force that drives the piston to move the needle valve body to block the outlet of the switching channel. Preferably, the glue supply mechanism further includes a filter module, and the glue supply gun holder is provided with a filter mounting cavity intersecting the glue inlet channel. The filter module is disposed in the filter mounting cavity and inserted into the glue inlet channel, and the filter module is used to filter the glue in the glue inlet channel. Preferably, the glue supply mechanism further includes a hot glue connector module, a heating element, and a heating temperature sensing component. The hot glue connector module is disposed on the glue supply gun holder, and the heating element is disposed inside the glue supply gun holder. The hot glue connector module is electrically connected to the heating element. The heating element is used to heat the glue supply gun holder to hot glue the glue inside the glue supply gun holder. The heating temperature sensing component is disposed inside the glue supply gun holder and is electrically connected to the hot glue connector module. The heating temperature sensing component is used to detect the temperature of the glue supply gun holder. Preferably, the adhesive shaft channel includes a first adhesive shaft sub-channel and a second adhesive shaft channel. One end of each of the first adhesive shaft sub-channels forms an adhesive shaft inlet on the side wall of the rotating adhesive shaft. Each adhesive shaft inlet is arranged at intervals along the same circumferential direction of the rotating adhesive shaft. The other end of each first adhesive shaft sub-channel and one end of each second adhesive shaft channel are connected together inside the rotating adhesive shaft. The other end of the second adhesive shaft channel forms an adhesive shaft outlet at the end of the rotating adhesive shaft that exits the rotating seat. The rotating adhesive shaft is driven to rotate by the rotation drive module, so that each adhesive shaft inlet is connected to the adhesive supply channel. Preferably, the rotary glue spraying mechanism further includes a nozzle module, which is sleeved on the end of the rotary glue shaft that extends out of the rotary seat. The nozzle module has a right-angle glue spraying channel, the glue inlet end of the right-angle glue spraying channel is connected to the glue shaft outlet, and the glue outlet end of the right-angle glue spraying channel forms a glue spraying nozzle on the side wall of the nozzle module. Compared with existing technologies, this utility model adopts a design concept of "separation of glue supply mechanism and rotary glue spraying mechanism": the glue supply mechanism completes glue delivery through the glue inlet channel, receiving cavity and glue supply channel in the glue supply gun holder, and the needle valve module is only responsible for controlling the flow of glue in the glue supply channel and does not participate in the rotation action; the rotary glue spraying mechanism receives the glue delivered by the glue supply channel through the rotary mounting cavity in the rotary seat, and realizes the rotary glue spraying by the rotary glue shaft driven by the rotary drive module. This separate structure makes the execution components of the two core actions of "glue delivery" and "gun head rotation" completely independent, avoiding the sealing loss caused by direct contact friction between the rotating component and the glue supply component in the traditional structure, reducing the risk of glue leakage, effectively solving the problems of material waste, product contamination and equipment failure caused by glue leakage in traditional spray guns, and ensuring the stable operation of the production line. Secondly, the glue supply mechanism (glue gun holder, needle valve module) and the rotary glue spraying mechanism (rotary seat, rotary glue shaft, rotary drive module) of this utility model are independent modular structures. When the equipment malfunctions, the faulty module can be quickly located: if it is a glue supply problem (such as glue not being able to flow through or uneven glue supply), only the glue supply mechanism components such as the needle valve module and glue gun holder need to be repaired or replaced; if it is a rotation problem (such as the gun head not rotating or abnormal rotation noise), only the rotary glue spraying mechanism needs to be disassembled for repair, without affecting the entire equipment. This modular design greatly simplifies the maintenance process, reduces the disassembly steps and time required for maintenance, lowers the technical requirements for maintenance personnel, and avoids unnecessary cost expenditures caused by the replacement of integrated modules, significantly shortens equipment downtime, and improves production efficiency. Furthermore, this utility model separates the large glue supply components (such as glue gun holder and needle valve module) from the rotating glue spraying components (rotating seat and rotating glue shaft) through the design of "separation of glue supply and rotation". The rotating glue spraying mechanism only needs to undertake the functions of "rotation" and "glue dispensing" without integrating the complex structure related to glue supply. Therefore, the overall size can be greatly reduced and glue can be effectively sprayed in a small radius space. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural diagram of the rotary glue gun of this utility model.

[0008] Figure 2 This is an exploded view of the rotary glue gun of this utility model.

[0009] Figure 3 This is a top view of the rotary glue gun of this utility model.

[0010] Figure 4 It is along Figure 3 A cross-sectional view along the AA direction.

[0011] Figure 5 yes Figure 4 Enlarged view of point E in the middle.

[0012] Figure 6yes Figure 4 Enlarged view of point F in the middle.

[0013] Figure 7 It is along Figure 3 A cross-sectional view along the BB direction.

[0014] Figure 8 It is along Figure 3 A cross-sectional view along the CC direction.

[0015] Figure 9 It is along Figure 3 A cross-sectional view along the DD direction. Detailed Implementation

[0016] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0017] Please see Figures 1 to 7 The rotary glue gun 100 of this utility model includes a glue supply mechanism 101 and a rotary glue spraying mechanism 102. The glue supply mechanism 101 includes a glue supply gun base 1 and a needle valve module 2. The glue supply gun base 1 is provided with a glue inlet channel 11, a receiving cavity 12 and a glue supply channel 13. One end of the glue inlet channel 11 forms a liquid inlet 111 on the outside of the glue supply gun base 1. The other end of the glue inlet channel 11 communicates with the receiving cavity 12 and forms a first communication point 112. One end of the glue supply channel 13 communicates with the receiving cavity 12 and forms a second communication point 131. The needle valve module 2 passes through the receiving cavity 12 and blocks the position between the first communication point 112 and the second communication point 131. The needle valve module 2 is provided with a switch channel 21. By opening or closing the switch channel 21, the switch channel 21 communicates between the first communication point 112 and the second communication point 131. Alternatively, the switch channel 21 is located at the first communication point 112. The connection between the first connection 112 and the second connection 131 is disconnected, realizing the connection or disconnection between the first connection 112 and the second connection 131; the rotary glue spraying mechanism 102 includes a rotary seat 5, a rotary glue shaft 6 and a rotary drive module (not shown in the figure). The rotary seat 5 is connected to the glue supply gun seat 1. The rotary seat 5 is provided with a rotary mounting cavity 51. The other end of the glue supply channel 13 is connected to the rotary mounting cavity 51; the rotary glue shaft 6 passes through the rotary mounting cavity 51 and is rotatably connected to the rotary seat 5. The rotary glue shaft 6 is provided with a glue shaft channel 61 for dispensing glue. The glue shaft channel 61 forms a glue shaft outlet 612a at the end of the rotary glue shaft 6 that passes through the rotary seat 5; the rotary drive module is connected to the rotary glue shaft 6; the rotary drive module drives the rotary glue shaft 6 to rotate, so that the glue shaft channel 61 is connected to the glue supply channel 13, so that the glue in the glue supply channel 13 can flow out from the glue shaft outlet 612a through the glue shaft channel 61. During the rotation of the rotary drive module, the rotary adhesive shaft 6 can be continuously connected to the adhesive supply channel 13. The rotary drive module can be an existing rotary motor, but is not limited to it.

[0018] By separating the glue supply mechanism 101 from the rotary glue spraying mechanism 102, the two actions of glue supply and rotary glue spraying are performed independently, avoiding the sealing problems caused by mutual interference of components in traditional integrated structures. At the same time, the volume of the rotary glue spraying mechanism 102 can be greatly reduced, which can meet the glue spraying needs of small radius spaces.

[0019] Please see Figures 1 to 7 In one embodiment, the needle valve module 2 includes a glue supply nozzle 22 and a switching valve assembly 23. The glue supply nozzle 22 is disposed within the accommodating cavity 12 and blocks the position between the first connection 112 and the second connection 131. A switching channel 21 is disposed within the glue supply nozzle 22, with one end of the switching channel 21 forming a switching channel inlet 211 communicating with the first connection 112 on the outside of the glue supply nozzle 22, and the other end of the switching channel 21 forming a switching channel outlet 212 communicating with the second connection 131 on the outside of the glue supply nozzle 22. The switching valve assembly 23 is disposed on the glue supply nozzle 22, and the switching valve assembly 23 passes through the switching channel 21 and extends to the outside of the switching channel outlet 212. By moving the switching valve assembly 23 to open or block the switching channel outlet 212, the switching channel 21 is opened or closed, thereby connecting the switching channel 21 between the first connection 112 and the second connection 131, or disconnecting the switching channel 21 between the first connection 112 and the second connection 131. The setting of the glue supply nozzle 22 provides a stable mounting carrier for the switch channel 21. At the same time, its cooperation with the accommodating cavity 12 can enhance the sealing of the glue supply channel 13. The switch valve assembly 23 directly acts on the outlet 212 of the switch channel to control the glue supply and disconnection. It has a faster response speed, higher control accuracy, and can effectively prevent glue leakage.

[0020] Please see Figures 2 to 6In one embodiment, the switching valve assembly 23 includes a needle valve mounting base 231, a piston 232, a needle valve body 233, and a switch drive module 234. The needle valve mounting base 231 is mounted on the glue supply nozzle 22. The needle valve mounting base 231 has a needle valve cavity 231a. The piston 232 is movably disposed in the needle valve cavity 231a. One end of the needle valve body 233 is connected to the piston 232. The other end of the needle valve body 233 first passes through the needle valve mounting base 231, then extends into and passes through the switching channel 21, and finally extends to the outside of the switching channel outlet 212. The switch drive module 234 is disposed on the needle valve mounting base 231 and is used to drive the piston 232 to move together with the needle valve body 233, so that the needle valve body 233 opens or blocks the switching channel outlet 212. The movement of piston 232 within needle valve cavity 231a drives needle valve body 233 to move, which can smoothly transmit the driving force of switch drive module 234 to needle valve body 233, ensuring the stability and accuracy of needle valve body 233's movement, thereby ensuring the reliability of adhesive on / off control and reducing adhesive waste or spraying defects caused by unstable control.

[0021] Specifically, the needle valve mounting base 231 includes a cylinder body 231b and a cylinder seat 231c. The needle valve cavity 231a is disposed within the cylinder body 231b, and the cylinder body 231b is connected to the cylinder seat 231c. The cylinder seat 231c is mounted on the glue supply nozzle 22. The separate design of the cylinder body 231b and the cylinder seat 231c facilitates the machining of the needle valve cavity 231a and the installation and maintenance of its internal components. The connection between the cylinder seat 231c and the glue supply nozzle 22 ensures the overall firmness of the needle valve mounting base 231, preventing loosening due to vibration or other factors during long-term use, which could affect the operating accuracy of the needle valve body 233.

[0022] Please see Figures 4 to 9In one embodiment, the switch drive module 234 includes a switch drive mounting base 234a and a solenoid valve 234b. A needle valve cavity 231a forms an opening 231a1 on the outside of the needle valve mounting base 231. The switch drive mounting base 234a is connected to the needle valve mounting base 231 and covers the opening 231a1. The solenoid valve 234b is disposed on the switch drive mounting base 234a. The switch drive mounting base 234a is provided with an air inlet channel 234a1, a first air outlet channel 234a2, and a second air outlet channel 234a3. One end of the air inlet channel 234a1 forms a gas inlet channel on the outside of the switch drive mounting base 234a. The air inlet 234a11 and the other end of the air inlet channel 234a1 are connected to the solenoid valve 234b. One end of the first air outlet channel 234a2 and one end of the second air outlet channel 234a3 are respectively connected to the solenoid valve 234b. The other end of the first air outlet channel 234a2 is connected to the opening 231a1 and is located on one side of the piston 232's movement direction. The other end of the second air outlet channel 234a3 is connected to the needle valve cavity 231a and is located on the other side of the piston 232's movement direction. The solenoid valve 234b is used to control the connection between one of the first air outlet channel 234a2 and the second air outlet channel 234a3 and the air inlet channel 234a1. Using a pneumatic drive method, the gas flow direction is controlled by the solenoid valve 234b, enabling rapid response and precise control of the needle valve body 233. Compared with traditional mechanical drive methods, it has advantages such as simple structure, convenient control, and stable driving force, effectively adapting to the needs of high-frequency glue spraying operations.

[0023] When the first outlet channel 234a2 is connected to the inlet channel 234a1, the gas entering the inlet channel 234a1 from the inlet 234a11 enters the first outlet channel 234a2 and the needle valve cavity 231a in sequence, thereby pushing the piston 232 together with the needle valve body 233 to move, so that the needle valve body 233 opens the switch channel outlet 212; when the second outlet channel 234a3 is connected to the inlet channel 234a1, the gas entering the inlet channel 234a1 from the inlet 234a11 enters the second outlet channel 234a3 and the needle valve cavity 231a in sequence, thereby pushing the piston 232 together with the needle valve body 233 to move, so that the needle valve body 233 blocks the switch channel outlet 212. By driving the piston 232 to move by gas pressure, the needle valve body 233 can quickly open and block the switch channel outlet 212. This bidirectional driving method can ensure the flexibility and reliability of the needle valve body 233's operation. At the same time, the compressibility of gas can also buffer the impact force when the piston 232 moves to a certain extent, extending the service life of the components.

[0024] Please see Figures 4 to 9In one embodiment, the switch drive mounting base 234a is further provided with a third air outlet channel 234a4. One end of the third air outlet channel 234a4 is connected to the air inlet channel 234a1, and the other end of the third air outlet channel 234a4 is connected to the accommodating cavity 12. The direction of movement of the piston 232 driven by the air inlet channel 234a4 is the same as the direction of movement of the piston 232 driven by the air inlet channel 234a3. The third air outlet channel 234a4 can provide auxiliary driving force while the second air outlet channel 234a3 is inlet, thereby enhancing the force with which the piston 232 drives the needle valve body 233 to seal the switch channel outlet 212, ensuring the sealing effect of the switch channel outlet 212, and effectively preventing leakage of the adhesive in the closed state. This is especially suitable for high-pressure adhesive supply scenarios.

[0025] Please see Figure 4 and Figure 6 In one embodiment, the switching valve assembly 23 further includes an elastic element 235. The elastic element 235 is connected between the piston 232 and the inner wall of the needle valve mounting seat 231 along the moving direction of the piston 232. The elastic element 235 provides an elastic force to drive the piston 232 to move the needle valve body 233 to block the switch channel outlet 212. The elastic force of the elastic element 235 can work in conjunction with the gas pressure of the second gas outlet channel 234a3 and the third gas outlet channel 234a4. The three work together to push the piston 232 to move the needle valve body 233 to block the switch channel outlet 212, further ensuring the blocking effect of the needle valve body 233 on the switch channel outlet 212. At the same time, when the pneumatic system fails, the elastic element 235 can rely on its own elastic force to drive the needle valve body 233 to close the switch channel outlet 212, playing an emergency protection role and avoiding losses caused by continuous leakage of colloid.

[0026] Please see Figure 4 and Figure 7 In one embodiment, the glue supply mechanism 101 further includes a filter module 3. The glue gun holder 1 also has a filter mounting cavity 14 intersecting with the glue inlet channel 11. The filter module 3 is disposed within the filter mounting cavity 14 and inserted into the glue inlet channel 11. The filter module 3 is used to filter the glue within the glue inlet channel 11. The filter module 3 can effectively remove impurities, particles, and other foreign matter contained in the glue, preventing these impurities from clogging the glue supply channel 13, the switch channel 21, or the glue shaft channel 61, ensuring smooth glue delivery. It also prevents impurities from affecting the glue spraying quality, ensuring the sprayed glue is uniform and smooth, and improving the product's bonding effect.

[0027] Please see Figure 8In one embodiment, the glue supply mechanism 101 further includes a hot glue connector module 4, a heating element 41, and a heating temperature sensing component 42. The hot glue connector module 4 is disposed on the glue supply gun holder 1, and the heating element 41 is disposed inside the glue supply gun holder 1. The hot glue connector module 4 is electrically connected to the heating element 41. The heating element 41 is used to heat the glue supply gun holder 1 to hot glue the glue inside the glue supply gun holder 1. The heating temperature sensing component 42 is disposed inside the glue supply gun holder 1 and is electrically connected to the hot glue connector module 4. The heating temperature sensing component 42 is used to detect the temperature of the glue supply gun holder 1. For hot melt adhesives and other colloids that require heating, the heating element 41 can heat and keep the colloid in the glue gun holder 1 to ensure that the colloid always maintains good fluidity and meets the fluidity requirements of subsequent glue spraying operations; the heating and temperature sensing component 42 can monitor the temperature of the glue gun holder 1 in real time and feed it back to the control system through the hot glue connector module 4 to achieve precise control of the heating temperature and avoid affecting the performance of the colloid due to excessively high or low temperatures.

[0028] Please see Figure 2 and Figure 4 In one embodiment, the adhesive shaft channel 61 includes a first adhesive shaft sub-channel 611 and a second adhesive shaft channel 612. One end of each of the first adhesive shaft sub-channels 611 forms an adhesive shaft inlet 611a on the side wall of the rotating adhesive shaft 6. Each adhesive shaft inlet 611a is arranged at intervals along the same circumferential direction of the rotating adhesive shaft 6. The other end of each first adhesive shaft sub-channel 611 and one end of each second adhesive shaft channel 612 are connected together inside the rotating adhesive shaft 6. The other end of the second adhesive shaft channel 612 forms an adhesive shaft outlet 612a at the end of the rotating adhesive shaft 6 that passes through the rotating seat 5. The rotating adhesive shaft 6 is driven to rotate by the rotation drive module, so that each adhesive shaft inlet 611a is connected to the adhesive supply channel 13. Multiple glue shaft inlets 611a are arranged at intervals around the circumference of the rotating glue shaft 6. During the rotation of the rotating glue shaft 6, they can alternately connect with the glue supply channel 13 to ensure that the glue can continuously and stably enter the glue shaft channel 61, avoid the phenomenon of temporary glue interruption due to a single inlet during rotation, and ensure the continuity and uniformity of glue spraying.

[0029] Please see Figure 4 and Figure 8In one embodiment, the rotary glue spraying mechanism 102 further includes a nozzle module 7. The nozzle module 7 is sleeved on the end of the rotary glue shaft 6 that extends out of the rotary seat 5. The nozzle module 7 has a right-angle glue spraying channel 71 inside. The glue inlet end of the right-angle glue spraying channel 71 is connected to the glue shaft outlet 612a, and the glue outlet end of the right-angle glue spraying channel 71 forms a glue spraying nozzle on the side wall of the nozzle module 7. The nozzle module 7 can change the spraying direction of the glue. The right-angle glue spraying channel 71 can change the glue from axial conveying to radial spraying, which is more suitable for glue spraying needs on the sides, inner peripheries, and other parts of the workpiece. At the same time, the nozzle module 7 can be replaced with different specifications of glue spraying nozzles according to different glue spraying requirements, realizing flexible adjustment of the glue spraying width and shape, and improving the versatility of the equipment.

[0030] Combination Figures 1 to 9 The working principle of the rotary glue spray gun 100 of this utility model is as follows: When the rotary glue gun 100 of this utility model is working, the external glue enters the glue inlet channel 11 from the liquid inlet 111 of the glue supply gun base 1, and after being filtered by the filter module 3, it enters the first connection 112 of the receiving cavity 12. When glue needs to be sprayed, the solenoid valve 234b of the switch drive module 234 controls the first air outlet channel 234a2 to connect with the air inlet channel 234a1. The gas enters from the air inlet 234a11 and passes through the air inlet channel 234a1 and the first air outlet channel 234a2 in sequence into the needle valve cavity 231a. The push piston 232 drives the needle valve body 233 to move, opening the switch channel outlet 212, so that the switch channel 21 connects the first connection 112 and the second connection 131. The glue enters the glue supply channel 13 in sequence through the switch channel 21 and the second connection 131. The adhesive in the adhesive supply channel 13 flows into the rotating mounting cavity 51 of the rotating seat 5. At this time, the rotating drive module drives the rotating adhesive shaft 6 to rotate. The adhesive shaft inlet 611a on the rotating adhesive shaft 6 is connected to the adhesive supply channel 13 during the rotation. The adhesive enters the first adhesive shaft sub-channel 611 through the adhesive shaft inlet 611a, then flows out from the adhesive shaft outlet 612a through the second adhesive shaft channel 612, and finally is sprayed out from the spray nozzle through the spray right-angle channel 71 of the nozzle module 7, completing the rotating adhesive spraying action. When adhesive spraying is not needed, the solenoid valve 234b controls the second air outlet channel 234a3 to connect with the air inlet channel 234a1. At the same time, the third air outlet channel 234a4 also introduces gas, which together pushes the piston 232 to drive the needle valve body 233 to move in the opposite direction. With the elastic force of the elastic element 235, the needle valve body 233 blocks the switch channel outlet 212. The switch channel 21 is disconnected, and the adhesive cannot flow from the first connection point 112 to the second connection point 131, so the adhesive spraying action stops. Throughout the process, the heating element 41 can heat the glue in the glue gun holder 1 as needed, and the heating and temperature sensing component 42 monitors the temperature in real time and provides feedback to ensure that the glue is in a suitable temperature state.

[0031] In summary, this utility model adopts a design concept of "separation of glue supply mechanism 101 and rotary glue spraying mechanism 102": the glue supply mechanism 101 completes glue delivery through the glue inlet channel 11, the receiving cavity 12, and the glue supply channel 13 in the glue gun holder 1, and the needle valve module 2 is only responsible for controlling the flow of glue in the glue supply channel 13 and does not participate in the rotation action; the rotary glue spraying mechanism 102 receives the glue delivered by the glue supply channel 13 through the rotary mounting cavity 51 in the rotary seat 5, and realizes the rotary glue spraying by the rotary glue shaft 6 driven by the rotary drive module. This separate structure makes the execution components of the two core actions of "glue delivery" and "gun head rotation" completely independent, avoiding the sealing loss caused by direct contact friction between the rotating component and the glue supply component in the traditional structure, reducing the risk of glue leakage, effectively solving the problems of material waste, product contamination and equipment failure caused by glue leakage in traditional spray guns, and ensuring the stable operation of the production line. Secondly, the glue supply mechanism 101 (glue gun holder 1, needle valve module 2) and the rotary glue spraying mechanism 102 (rotary seat 5, rotary glue shaft 6, rotary drive module) of this utility model are independent modular structures. When the equipment malfunctions, the faulty module can be quickly located: if it is a glue supply problem (such as glue not being able to flow through or uneven glue supply), only the needle valve module 2, glue gun holder 1 and other glue supply mechanism 101 components need to be repaired or replaced; if it is a rotation problem (such as the gun head not rotating or abnormal rotation noise), only the rotary glue spraying mechanism 102 needs to be disassembled for repair, without affecting the entire equipment. This modular design greatly simplifies the maintenance process, reduces the disassembly steps and time required for maintenance, lowers the technical requirements for maintenance personnel, and avoids unnecessary cost expenditures caused by the replacement of integrated modules, significantly shortens equipment downtime, and improves production efficiency. Furthermore, this invention separates the bulky glue supply components (such as the glue gun holder 1 and needle valve module 2) from the rotating glue spraying components (rotating seat 5 and rotating glue shaft 6) through a "glue supply and rotation separation" design. The rotating glue spraying mechanism 102 only needs to perform the "rotation" and "glue dispensing" functions, eliminating the need to integrate complex glue supply-related structures. Therefore, the overall size can be significantly reduced, enabling effective glue spraying within a small radius space. Additionally, in this invention, the glue supply mechanism 101 precisely controls the glue flow and supply volume through the switching channel of the needle valve module 2, ensuring the glue supply process is unaffected by vibrations in the rotating glue spraying mechanism 102. The rotating glue spraying mechanism 102 independently drives the rotating glue shaft 6 through a rotation drive module; its rotation speed and stability are controlled solely by its own drive components and are independent of the glue supply pressure. This "independent glue supply and independent rotation" design ensures that the two core actions do not interfere with each other. The glue can enter the glue shaft channel of the rotating glue shaft 6 with stable pressure and uniform flow. Combined with the stable rotation of the rotating glue shaft 6, it ultimately achieves a precise and uniform glue spraying effect, ensuring the consistency and stability of the product's bonding strength.

[0032] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A rotary glue spray gun, characterized in that, include: The glue supply mechanism includes a glue supply gun holder and a needle valve module. The glue supply gun holder has a glue inlet channel, a receiving cavity, and a glue supply channel. One end of the glue inlet channel forms a liquid inlet on the outside of the glue supply gun holder, and the other end of the glue inlet channel communicates with the receiving cavity to form a first communication point. One end of the glue supply channel communicates with the receiving cavity to form a second communication point. The needle valve module passes through the receiving cavity and blocks the position between the first communication point and the second communication point. The needle valve module has a switch channel inside, which opens or closes to realize the connection or disconnection between the first communication point and the second communication point. A rotary glue spraying mechanism includes a rotating base, a rotary glue shaft, and a rotary drive module. The rotating base is connected to a glue gun base and has a rotary mounting cavity. The other end of the glue supply channel communicates with the rotary mounting cavity. The rotary glue shaft passes through the rotary mounting cavity and is rotatably connected to the rotating base. The rotary glue shaft has a glue shaft channel for dispensing glue, and the glue shaft channel forms a glue shaft outlet at the end of the rotary glue shaft that exits the rotating base. The rotary drive module is connected to the rotary glue shaft. The rotary drive module drives the rotary glue shaft to rotate, so that the glue shaft channel communicates with the glue supply channel, allowing the glue in the glue supply channel to flow out from the glue shaft outlet through the glue shaft channel.

2. The rotary glue gun according to claim 1, characterized in that, The needle valve module includes a glue supply nozzle and a switching valve assembly. The glue supply nozzle passes through the accommodating cavity and blocks the position between the first connection and the second connection. The switching channel is disposed within the glue supply nozzle, with one end of the switching channel forming a switching channel inlet communicating with the first connection on the outside of the glue supply nozzle, and the other end of the switching channel forming a switching channel outlet communicating with the second connection on the outside of the glue supply nozzle. The switching valve assembly is disposed on the glue supply nozzle, and the switching valve assembly passes through the switching channel and extends to the outside of the switching channel outlet. The switching channel outlet is opened or closed by moving the switching valve assembly.

3. The rotary glue gun according to claim 2, characterized in that, The switching valve assembly includes a needle valve mounting base, a piston, a needle valve body, and a switching drive module. The needle valve mounting base is mounted on the glue supply nozzle, and a needle valve cavity is provided inside the needle valve mounting base. The piston is movably disposed within the needle valve cavity. One end of the needle valve body is connected to the piston, and the other end of the needle valve body first passes through the needle valve mounting base, then extends into and through the switching channel, and finally extends to the outside of the switching channel outlet. The switching drive module is disposed on the needle valve mounting base and is used to drive the piston and the needle valve body to move together, so that the needle valve body opens or blocks the switching channel outlet.

4. The rotary glue gun according to claim 3, characterized in that, The switch drive module includes a switch drive mounting base and a solenoid valve. The needle valve cavity forms an opening on the outside of the needle valve mounting base. The switch drive mounting base is connected to the needle valve mounting base and covers the opening. The solenoid valve is disposed on the switch drive mounting base. The switch drive mounting base is provided with an air inlet channel, a first air outlet channel, and a second air outlet channel. One end of the air inlet channel forms an air inlet for gas to enter on the outside of the switch drive mounting base. The other end of the air inlet channel is connected to the solenoid valve. One end of the first air outlet channel and one end of the second air outlet channel are respectively connected to the solenoid valve. The other end of the first air outlet channel communicates with the opening and is located on one side of the piston movement direction. The other end of the second air outlet channel communicates with the needle valve cavity and is located on the other side of the piston movement direction. The solenoid valve is used to control one of the first air outlet channel and the second air outlet channel to communicate with the air inlet channel.

5. The rotary glue gun according to claim 4, characterized in that, The switch drive mounting base is also provided with a third air outlet channel. One end of the third air outlet channel is connected to the air inlet channel, and the other end of the third air outlet channel is connected to the accommodating cavity. The direction of movement of the piston driven by the air inlet of the third air outlet channel is the same as the direction of movement of the piston driven by the air inlet of the second air outlet channel.

6. The rotary glue gun according to claim 3, characterized in that, The switching valve assembly also includes an elastic element, which is connected between the piston and the inner wall of the needle valve mounting seat along the movement direction of the piston. The elastic element is used to provide an elastic force to drive the piston to move the needle valve body to block the outlet of the switching channel.

7. The rotary glue gun according to claim 1, characterized in that, The glue supply mechanism also includes a filter module. The glue supply gun holder is provided with a filter mounting cavity that intersects with the glue inlet channel. The filter module is disposed in the filter mounting cavity and inserted into the glue inlet channel. The filter module is used to filter the glue in the glue inlet channel.

8. The rotary glue gun according to claim 1, characterized in that, The glue supply mechanism further includes a hot glue connector module, a heating element, and a heating temperature sensing component. The hot glue connector module is disposed on the glue supply gun holder, and the heating element is disposed inside the glue supply gun holder. The hot glue connector module is electrically connected to the heating element. The heating element is used to heat the glue supply gun holder to hot glue the glue inside the glue supply gun holder. The heating temperature sensing component is disposed inside the glue supply gun holder and is electrically connected to the hot glue connector module. The heating temperature sensing component is used to detect the temperature of the glue supply gun holder.

9. The rotary glue gun according to claim 1, characterized in that, The adhesive shaft channel includes a first adhesive shaft sub-channel and a second adhesive shaft channel. One end of each of the first adhesive shaft sub-channels forms an adhesive shaft inlet on the side wall of the rotating adhesive shaft. Each adhesive shaft inlet is arranged at intervals along the same circumferential direction of the rotating adhesive shaft. The other end of each first adhesive shaft sub-channel and one end of each second adhesive shaft channel are connected together inside the rotating adhesive shaft. The other end of the second adhesive shaft channel forms an adhesive shaft outlet at the end of the rotating adhesive shaft that exits the rotating seat. The rotating adhesive shaft is driven to rotate by the rotation drive module, so that each adhesive shaft inlet is connected to the adhesive supply channel.

10. The rotary glue gun according to claim 1, characterized in that, The rotary glue spraying mechanism further includes a nozzle module, which is sleeved on the end of the rotary glue shaft that extends out of the rotary seat. The nozzle module has a glue spraying right-angle channel, the glue inlet end of which is connected to the glue shaft outlet, and the glue outlet end of which forms a glue spraying nozzle on the side wall of the nozzle module.

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