Automatic locking device and method for glue spraying gun of cigarette packaging machine

Abstract

The present application relates to cigarette packaging technical field, especially a kind of cigarette packaging machine glue gun automatic locking device and method.Locking device includes support seat, sliding assembly and locking assembly;The sliding assembly one end is connected with the swing arm support, and the other end is inserted in the support seat;The locking assembly includes driving mechanism, limiting unit and reset piece, the reset piece is installed on limiting unit, and can be in the stop state, drive the limiting unit insertion in support seat and be on the sliding assembly;The driving mechanism is connected with the limiting unit, and can be in the working state, drive the limiting unit away from the sliding assembly on.The present application realizes that glue gun can be automatically locked in cleaning position after equipment cut-off compressed air, without manual intervention, reduce glue head block frequency, reduce cleaning difficulty, reduce spare parts consumption.

Description

Technical Field

[0001] This invention relates to the field of cigarette packaging technology, and in particular to an automatic locking device and method for a cigarette packaging machine's glue gun. Background Technology

[0002] In the label application stage of cigarette packaging machines, cold glue spraying technology is commonly used. Taking the ZB48 cigarette packaging machine as an example, its glue spraying system is usually equipped with a V400 type 8-head spray gun. This spray gun is driven by a swing arm cylinder and can rotate in an arc. When the equipment starts normally, the swing arm cylinder retracts, driving the spray gun to rotate to the working position, and the glue is sprayed onto the label paper under pressure. When the equipment stops, the swing arm cylinder rebounds, and the spray gun rotates to the cleaning position. The matching rotating glue cleaning roller wipes the spray nozzle to keep the spray nozzle moist and prevent the glue from drying at the nozzle.

[0003] When the production line is nearing completion or the equipment requires comprehensive maintenance, it is usually necessary to simultaneously shut off the power and cut off the compressed air supply. At this time, the swing arm cylinder controlling the glue gun malfunctions due to the loss of compressed air pressure, failing to maintain the gun's posture. The glue gun, under its own weight, will droop downwards, deviating from its intended cleaning position, preventing the glue cleaning roller from effectively contacting and wetting the nozzle. Prolonged exposure to air causes residual glue to quickly solidify, clogging the nozzle. Before the next production run, operators must manually clean and unclog the clogging nozzles; if the glue has solidified severely, the entire nozzle assembly must be replaced, increasing additional equipment maintenance workload, raising the frequency of spare parts replacements, and reducing the effective operating rate of the packaging machine. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a locking device for a glue gun in a cigarette packaging machine. By cooperating with an unlocking cylinder and a locking spring, the glue gun can be automatically locked in the cleaning position after the compressed air is cut off, without manual intervention. This reduces the frequency of glue head clogging, lowers cleaning difficulty, and reduces spare parts consumption.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions: In a first aspect, embodiments of the present invention provide a locking device for a glue spray gun in a cigarette packaging machine. The glue spray gun is mounted on a swing arm bracket. The locking device includes a support base, a sliding component, and a locking component. One end of the sliding component is connected to the swing arm bracket, and the other end is inserted into the support base. The locking component includes a driving mechanism, a limiting unit, and a resetting component. The resetting component is mounted on the limiting unit and can drive the limiting unit to insert into the support base and abut against the sliding component when the machine is stopped. The driving mechanism is connected to the limiting unit and can drive the limiting unit away from the sliding component when the machine is in operation.

[0006] As a further technical solution, the sliding assembly includes a spherical bearing and a sliding rod. The bearing end of the spherical bearing is mounted on the swing arm bracket by a screw. One end of the sliding rod is threadedly connected to the spherical bearing. One end of the support seat has a hole, and the other end of the sliding rod is inserted into the hole of the support seat.

[0007] As a further technical solution, the limiting unit includes a limiting rod and a limiting block, the driving mechanism is an unlocking cylinder, the unlocking cylinder and the limiting block are respectively located on both sides of the support base, one end of the limiting rod is connected to the limiting block, and the unlocking cylinder is pushed against the other end of the limiting rod.

[0008] As a further technical solution, the limiting block is an L-shaped component, including a connecting rod and a tightening rod. The limiting rod is connected to the connecting rod, and the support base has a locking hole that communicates with the hole. The tightening rod can be inserted into the locking hole.

[0009] As a further technical solution, the connecting rod is provided with a mounting hole and an opening groove, the opening groove is in communication with the mounting hole, one end of the limiting rod is inserted into the mounting hole, and a screw is installed on the opening groove to clamp the limiting rod in the mounting hole.

[0010] As a further technical solution, a support block is installed on the support base, the support block is located between the support base and the limiting block, and a through hole is opened on the support block. The limiting rod passes through the through hole of the support block and is connected to the limiting block.

[0011] As a further technical solution, the reset component is a locking spring, which is sleeved on the limiting rod. The side of the limiting rod that abuts against the driving mechanism has a retaining ring. One end of the locking spring abuts against the retaining ring, and the other end abuts against the support block.

[0012] As a further technical solution, the swing arm bracket is driven by a swing arm cylinder, the other end of the swing arm cylinder is mounted on a fixed seat, and the rear end of the support seat has a connecting rod, which is mounted on the fixed seat by a threaded rod.

[0013] As a further technical solution, embodiments of the present invention also provide a method for installing the locking device of the glue gun of the cigarette packaging machine, comprising: connecting the joint bearing of the locking device to the swing arm bracket by means of a screw, installing the connecting rod at the rear end of the support seat of the locking device on the fixed seat, and delivering compressed air to the unlocking cylinder through an air pipe.

[0014] Secondly, embodiments of the present invention also provide a locking method for the locking device of the glue gun in a cigarette packaging machine, comprising: When the equipment is connected to compressed air, air is supplied to the unlocking cylinder. The piston rod of the unlocking cylinder extends and pushes the limit rod. The limit rod drives the limit block to move against the elastic force of the locking spring, so that the limit block disengages from the locking hole on the support base, and the slide rod slides freely in the hole of the support base. With the compressed air supply cut off, the air supply to the unlocking cylinder stops, the locking spring resets and pushes the limit rod to move in the opposite direction. The limit rod drives the limit block to insert into the locking hole on the support base and abut against the slide rod, so that the slide rod is locked in the hole of the support base.

[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: The locking device of this invention, in the air-supported state, allows the drive mechanism to overcome the elasticity of the reset member to release the lock, thereby releasing the constraint on the sliding component and ensuring that the glue gun can freely switch positions without affecting the normal operation of the equipment. In the air-off state, the reset member automatically drives the limit unit to insert and abut against the sliding component, thereby limiting the extension and retraction of the sliding component and fixing the glue gun in the clean position, achieving passive locking in the stopped state. This locking device solves the problem of glue solidification and blockage of the nozzle caused by the glue gun leaving the clean position under its own gravity. Moreover, the two opposing actions are naturally switched by the on / off state of compressed air, without the need for additional control signals, and the structure is simple and highly reliable.

[0016] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, the dimensions or spacing between the components are exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0018] Figure 1This is a first-view schematic diagram of the locking device provided in an embodiment of the present invention; Figure 2 This is a second-view schematic diagram of the locking device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation state of the locking device provided in an embodiment of the present invention; Figure 4 This is an exploded schematic diagram of the locking device provided in an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the locking device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the support base provided in an embodiment of the present invention; Figure 7 This is a partial sectional view of the support base provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the unlocking cylinder provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the support block provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the limiting block provided in an embodiment of the present invention; In the diagram: 1. Joint bearing; 2. Slide rod; 3. Support seat; 4. Unlocking cylinder; 5. Connector; 6. Air pipe; 7. Limiting rod; 8. Locking spring; 9. Support block; 10. Limiting block; 11. First nut; 12. Screw rod; 13. Swing arm bracket; 14. Glue gun; 15. Square hole; 16. Square groove; 17. Second nut; 18. Threaded rod; Detailed Implementation To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0019] Generally speaking, the terms "comprising" and "including" only indicate that the steps and elements are explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

[0020] Example 1 As described in the background technology, the ZB48 cigarette packaging machine uses cold glue spraying technology for applying adhesive to the label paper. The spraying system employs a V400 type 8-head spray gun, which is driven by a swing arm cylinder to rotate in an arc. When the equipment starts, the swing arm cylinder retracts, and the spray gun rotates to the working position. When a label paper passes by, the spray nozzle opens, and the glue is sprayed onto the label paper under pressure, achieving a bond between the cold glue and the designed adhesive portion of the label paper. When no label paper passes by, the solenoid valve does not activate, and the ejector pin moves downward under the force of the locking spring, blocking the spray nozzle and preventing glue leakage.

[0021] When the equipment stops, the swing arm cylinder rebounds, and the glue gun rotates to the cleaning position. The rotating glue cleaning roller cleans the eight nozzles on the spray gun and keeps the nozzles moist to prevent the glue from solidifying and clogging the nozzles due to prolonged shutdown, which would cause abnormal glue quality defects on the label paper.

[0022] When shutting down production, the power and compressed air of the equipment must be turned off. This will cause the swing arm cylinder that controls the spray gun to malfunction without the support of compressed air. The glue gun will move away from the cleaning position under its own weight and be in a semi-hanging state. The glue cleaning roller will not be able to clean the glue nozzle and keep it moist, which will cause the glue at the nozzle to solidify and block the nozzle.

[0023] When operators start production, they need to clean and unclog the clogging nozzles. If the adhesive has hardened significantly, the entire nozzle set needs to be replaced. This not only increases workload but also raises spare parts consumption and reduces the unit's effective operating rate. Therefore, inventing a device that automatically keeps the glue gun in the correct clean position when the compressed air is cut off has become an urgent problem to solve.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a typical embodiment of this disclosure, a locking device for a cigarette packaging machine's glue gun is provided. This locking device is used in cigarette packaging machines, such as the V400 type 8-head glue gun 14 applied to a ZB48 type cigarette packaging machine. The glue gun 14 is mounted on a swing arm bracket 13 and is driven by a swing arm cylinder to move between a working position and a cleaning position (e.g., ...). Figure 3 It rotates in an arc between the states shown.

[0025] The locking device includes a support base 3, a sliding assembly, and a locking assembly. One end of the sliding assembly is connected to the swing arm bracket 13, and the other end is inserted into the support base 3. When the swing arm bracket 13 moves, the sliding assembly can extend and retract within the support base 3 to adapt to changes in the position of the glue gun 14.

[0026] The locking assembly includes a drive mechanism, a limiting unit, and a reset component. The reset component is installed on the limiting unit. In the stopped state, it uses its own elasticity to drive the limiting unit to be inserted into the support base 3 and to abut against the sliding assembly, thereby limiting the extension and retraction of the sliding assembly and fixing the glue gun 14 in the cleaning position.

[0027] The drive mechanism is connected to the limiting unit. In the working state, the drive mechanism drives the limiting unit away from the sliding component, releases the constraint on the sliding component, and ensures that the glue gun 14 can freely switch positions.

[0028] This locking device automatically drives the limit unit to engage when the air supply is interrupted, achieving passive locking in the stopped state. In the air-supported state, the drive mechanism actively overcomes the spring force of the reset component to release the lock, without affecting normal equipment operation. These two opposing actions are naturally switched by the on / off state of compressed air, requiring no additional control signals, resulting in a simple structure and high reliability.

[0029] In a further specific example of this disclosure, the sliding assembly specifically includes a spherical bearing 1 and a slide rod 2. The bearing end of the spherical bearing 1 is mounted on the rocker arm bracket 13 via a screw 12. One end of the slide rod 2 is threadedly connected to the spherical bearing 1, and one end of the support base 3 has a hole, such as... Figure 6 , Figure 7 As shown, the other end of the slide rod 2 is inserted into the hole of the support base 3.

[0030] The spherical bearing 1 compensates for angular deviations during the movement of the swing arm bracket 13, preventing jamming. The slide rod 2 and the spherical bearing 1 are connected by threads, making the overall length of the sliding assembly adjustable to accommodate different machine installation dimensions. The smooth end of the slide rod 2 slides within the hole of the support base 3, with the clearance controlled within a small range, ensuring smooth extension and retraction while preventing wobbling. When the glue gun 14 swings under the drive of the swing arm cylinder, the slide rod 2 adaptively extends and retracts within the hole, and the spherical bearing 1 automatically adjusts its angle to ensure stable device movement.

[0031] In other specific examples of this disclosure, the limiting unit includes a limiting rod 7 and a limiting block 10, and the driving mechanism is an unlocking cylinder 4 (e.g., Figure 8 (As shown). The unlocking cylinder 4 and the limiting block 10 are located on both sides of the support base 3, respectively. One end of the limiting rod 7 is connected to the limiting block 10, and the piston rod of the unlocking cylinder 4 rests on the other end of the limiting rod 7. This arrangement allows the unlocking cylinder 4 to directly push the limiting rod 7 when it is activated, thereby causing the limiting block 10 to move.

[0032] When compressed air is supplied to the equipment, the piston rod of the unlocking cylinder 4 extends, pushing the limit rod 7 to move against the elastic force of the reset component. The limit rod 7 then drives the limit block 10 away from the sliding assembly. When the air supply is cut off, the reset component pushes the limit rod 7 to move in the opposite direction, and the limit block 10 re-inserts. The thrust of the unlocking cylinder 4 and the elastic force of the reset component form a pair of balanced forces. By controlling the on / off of compressed air, the two states can be switched, with a rapid response and no need for electrical control.

[0033] In a further specific example of this disclosure, the limiting block 10 is an L-shaped component, such as... Figure 10 As shown, it includes a connecting rod and a clamping rod. (As shown...) Figure 5 As shown, the limiting rod 7 is connected to the connecting rod, and the support base 3 has a locking hole that communicates with the hole, and the tightening rod can be inserted into the locking hole.

[0034] The L-shaped component design allows the clamping rod to be inserted from the side into the locking hole of the support base 3, directly abutting against the slide rod 2 located inside the hole. The locking hole and the hole are interconnected, ensuring that the clamping rod can contact the slide rod 2 after insertion. This structure is compact and makes full use of the internal space of the support base 3. The front end of the clamping rod can be chamfered for easy insertion.

[0035] The L-shaped limiting block 10 converts the horizontal movement of the limiting rod 7 into a vertical locking of the sliding rod 2 by the tightening rod. The direction of the locking force is perpendicular to the direction of movement of the sliding rod 2, ensuring reliable locking. When the tightening rod is inserted into the locking hole, the sliding rod 2 cannot extend or retract, thus locking the glue gun 14 in the cleaning position.

[0036] In other specific examples of this disclosure, the connecting rod is provided with a mounting hole and an opening groove, the opening groove communicating with the mounting hole. One end of the limiting rod 7 is inserted into the mounting hole, and a screw is installed on the opening groove to clamp the limiting rod 7 in the mounting hole. This design allows the relative position between the limiting rod 7 and the limiting block 10 to be adjusted.

[0037] After loosening the screws, the limiting rod 7 can be moved within the mounting hole to change the initial position of the limiting block 10, thereby adjusting the depth of the tightening rod inserted into the locking hole. After adjustment, tighten the screws to clamp the limiting rod 7 through the deformation of the opening groove. During installation, the locking position of the limiting block 10 can be finely adjusted according to the actual working conditions to ensure that the tightening rod can just abut against the slide rod 2 without generating excessive preload or insufficient locking.

[0038] In a further specific example of this disclosure, a support block 9 is mounted on the support base 3, the support block 9 is located between the support base 3 and the limiting block 10, and the support block 9 has a through hole, such as... Figure 9 As shown, the limiting rod 7 passes through the through hole of the support block 9 and is connected to the limiting block 10.

[0039] Support block 9 serves as an intermediate support, providing guidance and support for limit rod 7. Support block 9 is screwed into the square groove 16 on support base 3, and its through hole is coaxial with the piston rod of unlocking cylinder 4. This structure ensures the straightness of the movement of limit rod 7, preventing skewing and maintaining stability during reciprocating motion, thus reducing the risk of wear and jamming.

[0040] In some other specific examples of this disclosure, the reset element is a locking spring 8, such as... Figure 5 As shown, the locking spring 8 is sleeved on the limiting rod 7. The side of the limiting rod 7 that abuts against the drive mechanism has a retaining ring. One end of the locking spring 8 abuts against the retaining ring, and the other end abuts against the support block 9. The locking spring 8 is a cylindrical helical compression spring. The retaining ring can be a boss machined on the limiting rod 7.

[0041] When the unlocking cylinder 4 pushes the limit rod 7, the retaining ring compresses the locking spring 8; when the unlocking cylinder 4 releases its force, the elastic force of the locking spring 8 pushes the retaining ring to drive the limit rod 7 to move in the opposite direction.

[0042] The spring force of the locking spring 8 needs to be calculated to ensure that it can overcome the frictional resistance between the limiting block 10 and the support base 3, as well as the influence of gravity of the sliding component, after the air supply is cut off, and reliably push the limiting block 10 into the locking hole. At the same time, the spring force should not be too large, so as to prevent the unlocking cylinder 4 from being unable to open properly. In this embodiment, the spring selection is matched with the cylinder thrust.

[0043] In a further specific example of this disclosure, the swing arm bracket 13 is driven by a swing arm cylinder, the other end of which is mounted on a fixed seat. The rear end of the support seat 3 has a connecting rod, which is mounted on the fixed seat via a threaded rod 18.

[0044] The swing arm cylinder drives the swing arm bracket 13, which in turn drives the glue spray gun 14. The rear end of the locking device support 3 is fixed to the same fixed seat via a connecting rod and a threaded rod 18, ensuring the relative position between the device and the swing arm cylinder is fixed. The end of the connecting rod has a through hole, which is locked to the threaded rod 18 with a nut. This installation method does not require modification to the original structure of the equipment; it can be installed directly using the existing fixed seat and the threaded hole on the swing arm bracket 13.

[0045] Furthermore, the threaded hole of the spherical bearing 1 is locked onto the slide rod 2 by cooperating with the first nut 11, and its length is adjustable. The spherical bearing 1 is locked onto the screw hole of the original equipment swing arm bracket 13 by the screw 12. One end of the slide rod 2 is threaded, and the other end is smooth. The threaded end cooperates with the threaded hole of the spherical bearing 1, and the smooth end is installed in the round hole at the front end of the support base 3. The slide rod 2 can slide and extend in the elongated hole in the support base 3 to adapt to the needs of different working states of the glue gun 14. The support base 3 is machined into an elongated hole shape inside. The round hole at the front end cooperates with the slide rod 2. The glue gun 14 can drive the device to extend and retract in different working states. The support base 3 has a square hole 15 on its side, which cooperates with the square block at the bottom of the limiting block 10. The support base 3 has a square groove 16 for installing the support block 9. The tail is a long rod with a through hole at the end, which is locked onto the threaded rod 18 of the original equipment by cooperating with the second nut 17.

[0046] The unlocking cylinder 4 is screwed onto the support base 3. A connector 5 is installed at the cylinder inlet. Compressed air enters the unlocking cylinder 4 through the air pipe 6 and connector 5, causing the piston rod to extend outward. The support block 9 is screwed into the bracket square groove 16. A through hole is opened on the top of the support block 9. The through hole is coaxial with the piston rod of the unlocking cylinder 4. The through hole is machined into a stepped shape to limit the position of the locking spring 8. The limiting rod 7 is installed in the through hole above the support block 9 in cooperation with the locking spring 8. They are coaxially fitted, and the end is inserted into the hole of the limiting block 10. The limiting block 10 is "L" shaped. The square block at the bottom is installed in the square hole 15 to limit the sliding rod 2. The front end of the square block is chamfered to facilitate installation with the square hole 15. The square block can slide back and forth in the square hole 15. The top of the limiting block 10 is machined with two through holes at a 90° angle to achieve locking with the limiting rod 7.

[0047] The extension length of the locking device is equal to the extension length of the cylinder controlling the swing arm of the glue gun 14 when the glue gun 14 is in the cleaning position, and the retraction length of the locking device is equal to the retraction length of the cylinder assembly controlling the swing arm of the glue gun 14 when the glue gun 14 is in the working position.

[0048] In summary, the locking device provided by this invention ensures that the glue gun 14 remains in the correct clean position after the air supply to the equipment is cut off. This changes the situation where, when the compressed air supply is cut off, the glue gun 14 detaches from the clean position due to its own gravity, leading to nozzle blockage and time-consuming cleaning. It does not require altering the original structure of the equipment and does not affect its normal operation. There is sufficient space inside the equipment to install the locking device. The structure is simple, maintenance and disassembly are convenient, and it is easy to manufacture. It automatically locks the glue gun 14 in the clean position when the compressed air supply is cut off, without manual intervention. Repeated adjustments are not required when restarting the equipment. This ensures the nozzle remains moist, preventing glue solidification and nozzle blockage, effectively reducing the scrap rate of poorly glued labels and decreasing the frequency of nozzle replacement.

[0049] The installation method of the locking device is as follows: the joint bearing 1 of the locking device is connected to the swing arm bracket 13 by the screw 12, the connecting rod at the rear end of the support seat 3 of the locking device is installed on the fixed seat, and compressed air is delivered to the unlocking cylinder 4 through the air pipe 6.

[0050] The entire installation process requires no modifications to the equipment, such as drilling or welding, and can be completed by ordinary maintenance personnel, ensuring that the device can move with the swing arm bracket 13 without interference after installation.

[0051] Example 2 This embodiment provides a locking method for the locking device described in Embodiment 1: When the equipment is connected to compressed air, air is supplied to the unlocking cylinder 4. The piston rod of the unlocking cylinder 4 extends and pushes the limit rod 7. The limit rod 7 drives the limit block 10 to move against the elastic force of the locking spring 8, so that the limit block 10 disengages from the locking hole on the support base 3. At this time, the slide rod 2 can slide freely in the hole of the support base 3. The glue gun 14 can switch between the working position and the cleaning position according to the movement of the swing arm cylinder to adapt to the needs of different working states of the glue gun 14 without affecting the normal operation of the equipment.

[0052] With the compressed air supply cut off, the air supply to the unlocking cylinder 4 is stopped. The locking spring 8 resets and pushes the limit rod 7 to move in the opposite direction. The limit rod 7 drives the limit block 10 to insert into the locking hole on the support base 3 and press against the slide rod 2, locking the slide rod 2 in the hole of the support base 3. At this time, the slide rod 2 cannot extend or retract, and the glue gun 14 is fixed in the cleaning position. This ensures that the eight nozzles on the glue gun 14 are in contact with the sponge on the glue cleaning roller, keeping the nozzles in a moist environment and preventing the glue from solidifying and causing nozzle blockage.

[0053] This method utilizes the on / off state of the device's own compressed air as a control signal, eliminating the need for additional sensors or controllers. The transition between the two states is entirely determined by the air source status, achieving automated locking.

[0054] This method solves the problem of the glue gun 14 sagging due to gravity after a power outage or gas supply failure. When the equipment is in normal production, the lock automatically releases when the gas supply is connected, without affecting the production cycle. When the equipment stops and the gas supply is cut off, the lock automatically engages, keeping the glue gun 14 in a clean position and ensuring contact between the nozzle and the glue cleaning roller to prevent the glue from solidifying. Furthermore, this method requires no manual operation, reducing maintenance frequency and spare parts consumption.

[0055] While the specific embodiments of the present invention have been described above, they are not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A locking device for a glue spray gun in a cigarette packaging machine, wherein the glue spray gun is mounted on a swing arm bracket, characterized in that, The locking device includes a support base, a sliding assembly, and a locking assembly; One end of the sliding component is connected to the swing arm bracket, and the other end is inserted into the support base; The locking assembly includes a drive mechanism, a limiting unit, and a reset component. The reset component is mounted on the limiting unit and can drive the limiting unit to insert into the support base and abut against the sliding assembly when the machine is stopped. The drive mechanism is connected to the limiting unit and can drive the limiting unit away from the sliding assembly when the machine is in operation.

2. The cigarette packaging machine glue gun locking device as described in claim 1, characterized in that, The sliding assembly includes a spherical bearing and a sliding rod. The bearing end of the spherical bearing is mounted on the swing arm bracket by a screw. One end of the sliding rod is threaded to the spherical bearing. One end of the support seat has a hole, and the other end of the sliding rod is inserted into the hole of the support seat.

3. The cigarette packaging machine glue gun locking device as described in claim 2, characterized in that, The limiting unit includes a limiting rod and a limiting block. The driving mechanism is an unlocking cylinder. The unlocking cylinder and the limiting block are located on both sides of the support base. One end of the limiting rod is connected to the limiting block, and the unlocking cylinder is abutted against the other end of the limiting rod.

4. The cigarette packaging machine glue gun locking device as described in claim 3, characterized in that, The limiting block is an L-shaped component, including a connecting rod and a tightening rod. The limiting rod is connected to the connecting rod. The support base has a locking hole that communicates with the hole, and the tightening rod can be inserted into the locking hole.

5. The cigarette packaging machine glue gun locking device as described in claim 4, characterized in that, The connecting rod is provided with a mounting hole and an opening groove. The opening groove is in communication with the mounting hole. One end of the limiting rod is inserted into the mounting hole. A screw is installed on the opening groove to clamp the limiting rod in the mounting hole.

6. The cigarette packaging machine glue gun locking device as described in claim 3, characterized in that, A support block is installed on the support base, and the support block is located between the support base and the limiting block. A through hole is opened on the support block, and the limiting rod passes through the through hole of the support block and is connected to the limiting block.

7. The cigarette packaging machine glue gun locking device as described in claim 6, characterized in that, The reset component is a locking spring, which is sleeved on the limiting rod. The side of the limiting rod that abuts against the driving mechanism has a retaining ring. One end of the locking spring abuts against the retaining ring, and the other end abuts against the support block.

8. The cigarette packaging machine glue gun locking device as described in claim 2, characterized in that, The swing arm bracket is driven by a swing arm cylinder, the other end of which is mounted on a fixed base. The rear end of the support base has a connecting rod, which is mounted on the fixed base via a threaded rod.

9. The cigarette packaging machine glue gun locking device as described in claim 8, characterized in that, Connect the spherical bearing of the locking device to the swing arm bracket via a screw, install the connecting rod at the rear end of the support seat of the locking device on the fixed seat, and deliver compressed air to the unlocking cylinder through an air pipe.

10. A locking method for the locking device of the glue spray gun in a cigarette packaging machine as described in any one of claims 1-9, characterized in that, include: When the equipment is connected to compressed air, air is supplied to the unlocking cylinder. The piston rod of the unlocking cylinder extends and pushes the limit rod. The limit rod drives the limit block to move against the elastic force of the locking spring, so that the limit block disengages from the locking hole on the support base, and the slide rod slides freely in the hole of the support base. With the compressed air supply cut off, the air supply to the unlocking cylinder stops, the locking spring resets and pushes the limit rod to move in the opposite direction. The limit rod drives the limit block to insert into the locking hole on the support base and abut against the slide rod, so that the slide rod is locked in the hole of the support base.

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