Soft pack dispensing machine

Abstract

This invention relates to the field of mechanical automation equipment, specifically a flexible packaging glue supply machine, comprising a glue pressing device, two pressurized glue pressing cylinder devices, and a glue path control device. The glue pressing device is equipped with a glue-expelling mechanism. Glue packaging bags are placed inside the pressing device, and high-pressure gas presses the glue into the pressurized glue pressing cylinder devices. The glue-expelling mechanism squeezes and extrudes the glue from the packaging bag. The two pressurized glue pressing cylinder devices consist of cylinders with larger cross-sectional areas pushing smaller cylinders. Glue from the pressing device is alternately supplied into the two pressurized glue pressing cylinders. After passing through the cylinders, the larger cylinders pressurize and alternately supply glue outwards. Due to the glue-expelling mechanism, very little glue remains on the inner wall of the packaging bag. Because of the two sets of pressurized glue pressing cylinders supplying glue alternately, the equipment can continue to operate when changing glue. The use of flexible packaging bags significantly reduces the packaging cost of the glue, and the minimal residual glue effectively reduces glue waste, thus saving costs and being environmentally friendly.

Description

Technical Field

[0001] This invention relates to the field of mechanical automation equipment, specifically to a flexible packaging adhesive dispensing machine. Background Technology

[0002] A glue applicator is an automated device specifically designed for controlling and applying adhesives and other coatings to product surfaces. It uses compressed air to feed the coating into a glue supply tube, and then, through program control, dispenses or coats the coating along a pre-set path. This equipment is primarily used to transport high-viscosity fluid media. It is mainly used for precisely applying glue, paint, and other liquids to specific locations on each product during manufacturing processes, and can be used to apply dots, lines, circles, or arcs. Existing glue packaging typically uses flexible adhesive packaging materials such as aluminum-plastic film or plastic film, which can lead to problems such as difficulty in glue supply and excessive residual glue.

[0003] Chinese Patent Publication No. CN208066669, published on December 29, 2017, discloses an invention entitled "Glue Supply Mechanism." However, this mechanism has several drawbacks. It requires frequent glue replacement, during which the equipment cannot be used. After replacement, air bubbles are generated when the glue comes into contact with air, requiring the device to stand for a period before the residual glue in the dispensing valve can be drained, significantly impacting efficiency. Furthermore, when supplying thicker glues, the existing equipment's pressurization capacity is insufficient due to the high viscosity of the glue, preventing effective glue extrusion. Additionally, a significant amount of glue remains on the glue packaging cylinder or bag, resulting in substantial glue waste. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a flexible packaging adhesive supply machine.

[0005] To solve the above-mentioned technical problems, the flexible packaging glue supply machine of the present invention includes a glue pressing device, wherein the glue pressing device is provided with a glue pushing mechanism.

[0006] Preferably, the adhesive pressing device includes a box body, the box body is provided with a receiving cavity for holding adhesive packaging bags, the upper end of the box body is provided with an opening, the opening is provided with a box cover that can open or seal the receiving cavity, and the box body or the box cover is provided with a sealing device and an air inlet.

[0007] Preferably, the lid is provided with an opening mechanism, which includes an opening cylinder that is driven and connected to the lid.

[0008] Preferably, the glue-expelling mechanism includes a glue bag carrier plate fixedly connected to the box body. The glue bag carrier plate is provided with a first fixing component, a translational glue-expelling component and a second fixing component from one end to the other. The first fixing component and the second fixing component fix the bottom end and the outlet end of the glue packaging bag, respectively. The translational glue-expelling component can clamp the upper and lower sides of the glue packaging bag and move to squeeze the glue from the bottom end of the glue packaging bag to the outlet end.

[0009] Preferably, the translational adhesive applicator includes a driving device connected to a clamping member, the clamping member including a lower fixed clamping seat, and an upper clamping plate connected to the upper fixed clamping seat via fasteners.

[0010] Preferably, the driving device includes a drive motor and a lead screw connected to the output shaft of the drive motor. Guide rails fixedly connected to the housing are provided on both sides of the lead screw. The bottom of the clamping member is connected to a slider that cooperates with the guide rails and is driven by the lead screw to move horizontally.

[0011] Preferably, it also includes at least two pressurized glue-pressing cylinder devices, each comprising a pressurizing cylinder and a glue-pressing cylinder. The piston rod of the pressurizing cylinder is connected to a piston inside the glue-pressing cylinder. The glue-pressing cylinder is connected to the outlet end of the glue packaging bag via a glue inlet pipe. A one-way valve is provided at the glue inlet of the glue-pressing cylinder. One end of the glue-pressing cylinder is also connected to a glue outlet pipe, which is connected to a glue gun via a glue outlet valve.

[0012] Preferably, the first fixing component includes a hanging rod and a hanging block that cooperate with each other. The hanging block is fixedly connected to one side of the box body, and a hanging groove is provided on the hanging block for fixing the two ends of the hanging rod.

[0013] Preferably, the second fixing component includes an upper pressure block and a lower pressure block that cooperate with each other. The lower pressure block is fixedly connected to the other side of the housing, and the upper pressure block is detachably connected to the lower pressure block by fasteners.

[0014] Preferably, it also includes a locking mechanism, which includes a locking cylinder fixedly mounted on the lid, the piston rod of the locking cylinder being fixedly connected to a pin, and a pin seat cooperating with the pin being fixedly connected to the box body.

[0015] The beneficial effects of this invention are: This invention solves the bottleneck of difficult glue supply and high residual glue amount in flexible packaging materials such as aluminum-plastic film and plastic film.

[0016] 1. The residual amount of adhesive in this invention is extremely small. This is because the invention uses a pressure box for air pressure adhesive pressing and a glue extrusion mechanism, resulting in good glue extrusion effect and extremely small residual amount of adhesive (the residual amount of adhesive in other equipment is about 5% to 8%, while the residual amount of adhesive in this invention is 0.5%).

[0017] 2. The glue supply is continuous and stable with high viscosity. At the same time, the present invention uses two pressure-boosting cylinders, which are used alternately during operation to ensure continuous and stable glue supply pressure, high glue viscosity, and no machine stop when changing glue.

[0018] 3. When used in conjunction with glue packaging bags, it greatly reduces the packaging cost of glue and ensures the effective use of glue, thus saving costs and being environmentally friendly.

[0019] This equipment is suitable for relatively thick adhesives. Through the triple action of air pressurization in the pressure chamber of the glue pressing device, further extrusion by the glue extrusion mechanism, and pushing by the pressurizing cylinder, the relatively thick adhesive can be squeezed out into the glue gun without residue. When changing adhesives, this equipment can maintain continuous glue supply without interruption. Due to the action of the glue extrusion mechanism, all the adhesive in the glue packaging bag can be squeezed out with minimal residue. When changing adhesives, the glue packaging bag inside the chamber is directly replaced. The outlet end of the glue packaging bag is connected to the outside of the material pipe connector, minimizing contact with air and reducing the likelihood of air bubbles. At the same time, the glue packaging bags suitable for this equipment have a large capacity, greatly reducing the packaging cost of the adhesive. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the adhesive bonding device of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the adhesive bonding device of the present invention;

[0023] Figure 4 This is a partially enlarged structural diagram of the first fixing component of the present invention;

[0024] Figure 5 This is a schematic diagram of the translational adhesive applicator structure of the present invention;

[0025] Figure 6 This is a partially enlarged structural diagram of the second fixing component of the present invention;

[0026] Figure 7 This is a schematic diagram of the pressurized glue cylinder device of the present invention;

[0027] Figure 8 This is a right view of the pressurized glue cylinder device of the present invention;

[0028] Figure 9 This is a schematic diagram illustrating the structural principle of the adhesive tape cylinder of the present invention;

[0029] Figure 10 This is a schematic diagram of the box cover structure of the present invention;

[0030] Figure 11 This is a cross-sectional view of the driving device of the present invention;

[0031] Figure 12 This is a structural diagram of a glue packaging bag;

[0032] Figure 13 This is a structural diagram of another type of glue packaging bag. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] according to Figures 1-11 An embodiment of a flexible packaging adhesive dispensing machine includes a frame 1, an adhesive pressing device 2, and a pressurizing adhesive pressing cylinder device 3. The adhesive pressing device 2 is fixedly connected to the upper end of the frame 1. The adhesive pressing device 2 includes a housing and a cover 201 that can be opened or sealed. The cover 201 has a groove 203 around its perimeter, and a sealing ring 202 is provided in the groove 203. Three locking cylinders 204 are also provided at the upper end of the cover 201. Opposite pin seats 205 are provided on one side of the locking cylinders 204. The pin seats 205 are fixedly connected to the upper end of the housing. One side of the cover 204 is hinged to the housing. When the cover is closed downwards, the housing is opened by the opening cylinders. Driven by cylinder 101, three locking cylinders 204 extend their piston rods to the pin seat 205. A connecting rod 207 is fixedly connected to the upper end of the cover 201 by screws. Both ends of the connecting rod 207 are connected to the piston rod of the opening cylinder 101. One end of the opening cylinder 101 is connected to the frame 1. When the opening cylinder 101 is working, the piston rod extends, which will drive the connecting rod and the cover to lift upward, thereby opening the box of the glue pressing device 2, making it easy to take out and put in the glue packaging bag 4. When it is necessary to close, the piston rod retracts, which will drive the connecting rod and the cover to close downward, thereby making the box closed, so that high-pressure gas can be introduced to increase the pressure.

[0035] A first fixing component 220 is fixedly installed at one end of the box. The first fixing component 220 includes a hanging rod 222 and a hanging block 224 that cooperate with each other. The hanging block 224 is provided with a hanging groove 221. Both ends of the hanging rod 222 are placed in the hanging groove 221. The hanging block 224 is fixedly connected to one end of the plastic bag support plate 260. Specifically, the hanging groove 221 is provided with a barb 223. The barb 223 is provided to prevent the hanging rod 222 from falling off when subjected to lateral tension.

[0036] A second fixing component 240 is provided at the other end of the box. The second fixing component 240 includes a lower pressing block 243 fixedly connected to one end of the glue bag support plate 260. An openable upper pressing block 242 is provided on the lower pressing block 243. A material pipe connector 251 is provided at the junction of the lower pressing block 243 and the upper pressing block 242. The other end of the material pipe connector 251 is connected to the glue inlet pipe 311. The lower pressing block 243 is connected to the upper pressing block 242 by a knob screw 241. Specifically, one end of the upper pressing block 242 is connected to the lower pressing block 243 by a knob screw 241, and the other end is hinged to the lower pressing block 243. A through hole is opened in the middle of the upper pressing block 242 and the lower pressing block 243. The material pipe connector 251 is connected to the glue packaging bag outlet end 402. The upper pressing block 242 and the lower pressing block 243 are pressed tightly on the upper and lower sides of the glue packaging bag outlet end by the knob screw 241.

[0037] In other embodiments, such as Figure 13 As shown, the tube connector 251 can also be set on the lower pressure block 243 or the upper pressure block 242. An inner tube opening 4022 (wrapped inside the aluminum-plastic film) is provided at the outlet end 402 of the glue packaging bag 4. The side wall of the tube opening 4022 is provided with a discharge port 4021. When the lower pressure block 243 and the upper pressure block 242 work together to press the tube opening 4022 tightly, the tube connector 251 is connected to the discharge port 4021 (the aluminum-plastic film at the discharge port 4021 needs to be punctured before use), thereby connecting the glue packaging bag 4 with the glue inlet tube 312.

[0038] The other end of the material pipe connector 251 is connected to the glue inlet pipe 312, and a sealing structure is provided at the connection with the box body.

[0039] One end of the glue packaging bag 4 is the outlet end 402, and the other end is provided with a rod hole 401. In this embodiment, the glue packaging bags are all made of aluminum-plastic film. The outlet end 402 is provided with an exposed or enclosed glue tube opening 4022. During installation, first move the translational glue-pushing component 230 to the side adjacent to the first fixing component 220. Then, place the glue packaging bag 4 on the glue bag support plate 260, insert the hanging rod 222 through the rod hole 401 of the glue packaging bag, and place it in the hanging groove 221 on the hanging block 224. In this way, one end of the glue packaging bag 4 is fixed, and the outlet end 402 of the other end is fixed by the second fixing component 240. Both ends of the glue packaging bag 4 are firmly fixed. When the translational glue-pushing component 230 moves laterally, the glue packaging bag 4 will not move horizontally synchronously, which facilitates glue extrusion.

[0040] Translational adhesive applicator 230 (e.g.) Figure 5(As shown) It mainly consists of a slider plate 232, a main plate 231, a lead screw nut 233, a slider 234, a lower clamping plate 235, an upper clamping plate 236, and pins 237. The main plate 231 is fixed at both ends of the slider plate 232, and the lower clamping plate 235 is fixed in the middle. Each end of the upper clamping plate 236 is equipped with a pin 237. A screw 238 is radially mounted on the pin 237. The screw 238 extends out of the upper clamping plate 236, and the pin 237 can be extended or retracted by manually pushing the screw 238. The upper clamping plate 236 can be inserted into the groove of the main plate 231. A slider 234 is fixed on the slider plate 232. 4. The lead screw nut 233 and slider 234 can slide on the guide rail. The lead screw 216 moves the lead screw nut together with the entire translational glue-pushing assembly 230. During operation, the pin 237 is retracted, the upper clamping plate 236 is taken out, and then the glue packaging bag 4 (the glue-free part at the rear end) is placed on the lower clamping plate 235. The upper clamping plate 236 is then put in, and the pins 237 at both ends are pushed out so that the pins 237 are locked in the holes of the main plate 231, thereby clamping the upper and lower sides of the glue packaging bag 4. When the translational glue-pushing assembly 230 moves, it pushes the residual glue in the glue packaging bag 4 to the outlet end 402.

[0041] like Figure 3 and Figure 1 As shown, a guide rail and a lead screw 216 are installed under the plastic bag support plate 260. The guide rail cooperates with the slider 234, and the lead screw 216 cooperates with the lead screw nut 233. One end of the lead screw 216 extends out of the box and is sealed by a sealing ring 211. Outside the box, there are components such as a slave synchronous pulley 212, a main synchronous pulley 214, a synchronous belt 213, and a motor 215. The motor 215 drives the lead screw 216 to rotate, thereby driving the translational adhesive pushing assembly 230 to move and realize the extrusion adhesive pushing action.

[0042] The structure of the pressurizing rubber cylinder device 3 is as follows: Figure 7 As shown, the device includes two pressurized glue-pressing cylinders fixed on a frame and a glue circuit control device. It mainly comprises a solenoid valve 301, a pressurized cylinder 302, a cylinder piston 303, a glue-pressing cylinder 304, a glue-pressing piston 305, a glue-pressing sealing ring 306, an end cap 307, a glue outlet valve 308, a one-way valve 309, a glue distribution block 310, and a glue inlet valve 311. The pressurized cylinder 302 and the glue-pressing cylinder 304 are fixedly connected. The pressurized cylinder 302 contains a cylinder piston 303. One end of the cylinder piston 303 is connected to the glue-pressing piston 305, and the glue-pressing piston 305 is equipped with a sealing ring 306. One end of the glue-pressing cylinder 304 is equipped with an end cap 307. The two pressurized glue-pressing cylinders are connected by two one-way valves 309 and a glue-distributing block 310, and then connected to the glue packaging bag outlet end 402 inside the box through the glue inlet valve 311 and the glue inlet pipe 312. The upper part of the end cap 307 is connected to the glue outlet valve 308, and the glue is supplied to the glue gun 315 through the glue outlet pipe 313.

[0043] The upper end of the frame 1 is connected to a cover 8 that can be opened or closed via a hydraulic rod 801. One end of the cover 8 is riveted to one side of the frame 1. The piston rod at one end of the hydraulic rod 801 is fixedly connected to the cover 8, and the other end of the hydraulic rod 807 is fixedly connected to the frame 1.

[0044] The frame is equipped with four casters 102 and four feet 103. The casters 102 facilitate movement, and the feet 103 can fix the equipment in place.

[0045] The working principle of the pressure-boosting glue-pressing cylinder device is as follows: When the pressure-boosting cylinder 302 releases air, the glue in the glue packaging bag 4 in the glue-pressing device 2 enters the cavity at the front end of the glue-pressing cylinder 304 under pressure through the glue inlet pipe 312, glue inlet valve 311 and one-way valve 309, and squeezes the glue-pressing piston 305 and cylinder piston 303 backward, filling the glue-pressing cylinder. When the filling is completed, air begins to enter the pressure-boosting cylinder 302, pushing the cylinder piston 303 and glue-pressing piston 305 forward, and the glue-pressing cylinder supplies glue to the outside. The cross-sectional area of ​​the cylinder piston 303 is much larger than that of the glue-pressing piston 305, which increases the pressure of the supplied glue. The one-way valve 308 can prevent the high-pressure glue in the glue-pressing cylinder from flowing back into the glue packaging bag. The glue outlet valve 308 is used to control the two pressure-boosting glue-pressing cylinders to alternately supply glue to the glue gun 315.

[0046] Overall equipment working principle description: First, open the machine cover 8, press the switch, the cover locking cylinder 204 retracts, the cover is released, the piston rod of the cover opening cylinder 101 extends, the box cover 201 is lifted, the upper clamping plate 236 on one side of the glue-applying mechanism is removed, the knob screw 241 on the second fixing component is loosened, the upper pressure block 242 is flipped open, and the glue packaging bag 4 along with the glue-applying completed and the hanging rod 222 on the first fixing component are taken out. The motor 215 is reset, and the glue-applying component 230 is moved back to one side of the first fixing component 220.

[0047] Insert the hanging rod 222 into the rod hole 401 at the bottom of the glue packaging bag 4 filled with glue. Place the glue packaging bag on the glue bag support plate 260 inside the box 2. Place the hanging rod 222 inserted at the bottom of the glue packaging bag 4 into the slot of the first fixing component 220. Fit the outlet end of the glue packaging bag onto the material pipe connector 251 of the second fixing component and place it on the lower pressure block 243. Cover the upper pressure block 242 and tighten the knob screw 241 to press the outlet end of the glue packaging bag and the material pipe connector 251 tightly onto the second fixing component 240. Put back the upper clamping plate 236 of the glue-pressing mechanism and push the pin 237 into the hole of the main board 231. Start the motor 215 and move the glue-pressing component to start pressing the glue.

[0048] Pressing the switch retracts the piston rod of the opening cylinder 101, closing the lid. Once the lid is in place, the locking cylinder 204 extends, and the locking pin engages with the pin seat 205, tightening the lid. A sealing ring 202 is installed on the lid, creating a sealed space within the box. High-pressure gas is introduced, and the glue packaging bag 4, through the combined action of the high-pressure gas and the translational glue-pushing assembly, forces the glue towards the inlet of the pressure-pressing cylinder device. Under the control of the glue circuit control device (usually a PLC), the pressure-pressing cylinders 302 of the two pressure-pressing cylinder devices are initially in the exhaust state. Glue from the box 2 enters the pressing cylinder 304 via the glue inlet pipe 312, glue inlet valve 311, glue distribution block 310, and one-way valve 309. The glue pushes the pressing piston 305 and cylinder piston 303 backward, replenishing the glue in the pressure-pressing cylinder device. After replenishment (when the cylinder piston 303 reaches its lowest point), the pressure-pressing cylinder opens... When inflation begins, the glue at the front end of the glue-pressing cylinder 304 is under pressure. At this time, the glue pressure inside the glue-pressing cylinder 304 is much greater than the glue pressure in the glue packaging bag inside the box. The one-way valve 309 closes to prevent the glue from flowing back into the glue packaging bag 4. At the same time, the PLC controls the glue dispensing valve 308 to open or close alternately. When the first glue dispensing valve opens, the pressurized glue-pressing cylinder device controlled by this valve supplies glue to the glue gun 315. When the glue supply in the glue-pressing cylinder 304 is exhausted (the cylinder piston 303 moves to the top), the PLC triggers the opening of another glue dispensing valve 308, and another glue-pressing cylinder supplies glue to the glue gun 315. At the same time, the PLC also triggers the closing of the original glue dispensing valve and controls the exhaust of the pressurized cylinder. The original pressurized glue cylinder replenishes glue, and vice versa. In this way, the two glue dispensing valves open and close alternately, realizing the alternating supply and replenishment of glue to the glue gun 315 by the two pressurized glue-pressing cylinders, achieving the requirement of continuous glue supply.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A soft pack glue applicator characterized by: The glue pressing device comprises a box body, a containing cavity for accommodating a glue bag is arranged in the box body, an opening is arranged at the upper end of the box body, a box cover capable of opening or sealing the containing cavity is arranged at the opening, a sealing device and an air inlet interface are arranged on the box body or the box cover, a glue pushing mechanism is arranged in the glue pressing device, the glue pushing mechanism comprises a glue bag bearing plate fixedly connected in the box body, a first fixing assembly, a translation glue pushing assembly and a second fixing assembly are sequentially arranged on the glue bag bearing plate from one end to the other end, the first fixing assembly and the second fixing assembly are respectively fixed to the bottom end and the outlet end of the glue bag, the translation glue pushing assembly can clamp the upper and lower sides of the glue bag and move to push the glue from the bottom end to the outlet end of the glue bag; at least two pressure glue cylinder devices are further arranged, the pressure glue cylinder device comprises a pressure cylinder and a glue cylinder, the piston rod of the pressure cylinder is connected with the piston in the glue cylinder, the glue cylinder is connected with the outlet end of the glue bag through a glue inlet pipe, a one-way valve is arranged at the glue inlet of the glue cylinder, an outlet pipe is further connected to one end of the glue cylinder, and the outlet pipe is connected with a glue gun through a glue outlet valve; the first fixing assembly comprises a hanging rod and a hanging block matched with each other, the hanging block is fixedly connected to one side in the box body, and a hanging groove is arranged in the hanging block and used for fixing the two ends of the hanging rod.

2. A soft pack glue applicator according to claim 1, characterized in that: An opening cover mechanism is arranged on the box cover, and the opening cover mechanism comprises an opening cover cylinder which is drivingly connected to the box cover.

3. A soft pack glue applicator according to claim 1, wherein: The translation glue pushing assembly comprises a driving device connected to a clamping piece, the clamping piece comprises a lower fixed clamping seat, and an upper clamping plate is connected to the upper side of the lower fixed clamping seat through fasteners and can be opened or closed.

4. A soft pack glue applicator according to claim 3, wherein: The driving device comprises a driving motor and a lead screw connected with the output shaft of the driving motor, guide rails fixedly connected with the box body are arranged on both sides of the lead screw, a sliding block matched with the guide rails is connected to the bottom of the clamping piece and is driven to translate by the lead screw.

5. A soft pack glue applicator as defined in claim 1, wherein: The second fixing assembly comprises an upper pressing block and a lower pressing block matched with each other, the lower pressing block is fixedly connected to the other side of the box body, and the upper pressing block is connected to the lower pressing block through fasteners and can be opened or closed.

6. The soft-pack glue dispenser according to any one of claims 1-3, characterized in that: A lock cover mechanism is further arranged, the lock cover mechanism comprises a lock cover cylinder fixedly arranged on the box cover, a pin shaft is fixedly connected to the piston rod of the lock cover cylinder, and a pin shaft seat matched with the pin shaft is fixedly connected to the box body.

Images