A hot pressing device suitable for bags

Abstract

The present invention provides a heat pressing device suitable for bags, belonging to the technical field of bag packaging equipment. It solves the problem that existing bags are prone to wrinkles during the packaging process and affect the appearance. The present invention provides a heat pressing device suitable for bags, including a lifting mechanism, a lifting plate, a tensioning mechanism, a retainer, a heat pressing mechanism, and a clamping mechanism. In the present invention, when the two clamping mechanisms clamp the ends of each bag respectively, the tensioning mechanism opens the retainer, and the two clamping mechanisms flatten the openings of each bag, the heat pressing mechanism heat-seals the openings of each bag. In this way, the two bags can be automatically heat-sealed, and wrinkles at the sealed ends of the bags during the heat-sealing process are avoided, air leakage of the bags is avoided, and the aesthetics of the bags after heat sealing are effectively increased.

Description

Technical Field

[0001] The invention belongs to the technical field of bag packaging equipment and relates to a hot pressing device suitable for bags. Background Art

[0002] The bag packaging device is a device that performs a heat-sealing process on the opening of the bag, which can achieve the sealing of the bag. For example, the publication number CN 112550857 A is an automatic packaging bag sealing device, which includes an automatic conveying module and a hot-pressing sealing module; the hot-pressing sealing module is located on one side of the automatic conveying module; the automatic conveying module includes a support platform and multiple belt conveying mechanisms, the support platform is provided with multiple parallel and spaced-apart give-way grooves, the multiple belt conveying mechanisms are respectively arranged corresponding to the multiple give-way grooves, and the belts of each of the belt conveying mechanisms are provided with evenly spaced pusher blocks; the support platform is located on one side of the hot-pressing sealing module and is connected to a bag baffle plate, the bag baffle plate includes a horizontal section and an arc section, and the arc section is arranged obliquely upward from the horizontal section toward the feeding position of the automatic conveying module; The present invention adopts an automatic conveying module to convey the packaging bags, and uses a bag baffle to block the bags and pass through a hot-pressing sealing module to seal the bags. Although the above scheme can achieve the sealing of the bags, when the above scheme is used, if the bag opening is wrinkled during the conveying process or the bag is heat-sealed, the sealed part of the bag after heat sealing will be wrinkled, and the bag is prone to air leakage at this time. Secondly, it is also very easy to affect the aesthetics of the bag. In addition, in the traditional bag heat sealing process, most of the time the bag opening is manually placed on the packaging equipment, which is very likely to cause burns to people's skin. Summary of the Invention

[0003] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a hot pressing device that can improve the airtightness and aesthetics of the bag after heat sealing and can improve the operational safety.

[0004] The object of the present invention can be achieved by the following technical solution: A hot pressing device suitable for bags, comprising:

[0005] A lifting mechanism, wherein a lifting plate is movably provided on the lifting mechanism, and the lifting plate can be raised and lowered relative to the lifting mechanism;

[0006] The pulling mechanism is provided on the lifting mechanism;

[0007] A retainer is provided on one side of the pulling mechanism and below the lifting plate, and the retainer can clamp at least two bags at the same time;

[0008] A hot pressing mechanism is movably provided on the bottom surface of the lifting plate. A pair of clamping mechanisms for clamping the ends of each bag are also provided on the bottom surface of the lifting plate, and one of the clamping mechanisms is movable relative to the lifting plate.

[0009] When the two clamping mechanisms clamp the ends of the bags respectively, the tension mechanism opens the holder, and the two clamping mechanisms flatten the openings of the bags, the heat pressing mechanism heat-seals the openings of the bags.

[0010] In the above-mentioned hot pressing device suitable for bags, the hot pressing mechanism includes a guide plate movably mounted on a lifting plate and the same number of hot pressing components as the bags. The guide plate can move relative to the lifting plate, and the hot pressing component can move relative to the lifting plate. The moving direction of the guide plate is perpendicular to the moving direction of the hot pressing component, and the guide plate can drive the hot pressing component to move.

[0011] In the above-mentioned hot pressing device suitable for bags, each of the hot pressing components includes a left pressure piece and a right pressure piece that are slidably connected to the bottom surface of the lifting plate, and the guide plate is provided with a traction hole that is slidably connected to the left pressure piece and a right inclined hole that is slidably connected to the right pressure piece.

[0012] In the above-mentioned hot pressing device suitable for bags, a rack is provided on the top surface of the lifting plate, and a driving member meshing with the rack is provided on the guide plate.

[0013] In the above-mentioned hot pressing device suitable for bags, the driving member includes a third motor, and the third motor is provided with an upper bevel gear and a coaxially arranged lower bevel gear and a third gear. The lower bevel gear and the third gear are respectively located on both sides of the guide plate, the third gear is engaged with the rack, and the lower bevel gear is engaged with the upper bevel gear.

[0014] In the above-mentioned hot pressing device suitable for bags, the lifting plate is provided with a bag pulling assembly for driving one of the clamping mechanisms to move. The bag pulling assembly is connected to the clamping mechanism, and the other clamping mechanism is connected to the bottom surface of the lifting plate.

[0015] In the above-mentioned hot pressing device suitable for bags, each of the clamping mechanisms includes a back plate, which can be connected to a lifting plate or to a bag pulling assembly. A pair of movable plates are slidingly provided on one side of the back plate, and each movable plate is provided with two clamping rods, each clamping rod is located on the same plane, and the clamping rods on the two movable plates are staggered. A second motor is provided on the other side of the back plate, and the second motor is provided with a second gear that meshes with each movable plate. A third guide rail is provided on the back plate that is slidably connected to the movable plate.

[0016] In the above-mentioned hot pressing device suitable for bags, the bag pulling assembly includes a bag pulling motor arranged on a lifting plate and a clamping seat connected to one of the back plates. A screw rod is provided on the bag pulling motor, and a vertical plate is provided on the clamping seat. The screw rod thread passes through the vertical plate, and the clamping seat can slide relative to the lifting plate.

[0017] In the above-mentioned hot pressing device suitable for bags, the tension mechanism includes:

[0018] A fixed plate connected to the lifting mechanism;

[0019] A tension component is provided on the fixed plate;

[0020] An opening assembly is provided on the tension assembly, the opening assembly can make the retainer release the bag, and a power member for driving the tension assembly and the opening assembly to move is provided on the fixing plate;

[0021] When the power member is running, the opening assembly moves relative to the fixed plate and the tension assembly remains stationary relative to the fixed plate, or the tension assembly moves relative to the fixed plate and the opening assembly remains stationary relative to the fixed plate.

[0022] In the above-mentioned hot pressing device suitable for bags, the lifting mechanism includes a side plate and a lifting motor for driving the lifting plate to lift and lower. The lifting motor is provided with a screw, and the screw thread passes through the lifting plate. The side plate is provided with at least two lifting guide rails, and the lifting guide rod movably passes through the lifting plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, when the two clamping mechanisms clamp the ends of each bag respectively, the tension mechanism opens the retainer, and the two clamping mechanisms flatten the openings of each bag, the heat pressing mechanism heat-seals the openings of each bag. In this way, the two bags can be automatically heat-sealed, and wrinkles at the sealed ends of the bags during the heat-sealing process are avoided, which prevents air leakage from the bags and effectively improves the aesthetics of the bags after heat-sealing.

[0025] 2. After the two clamping mechanisms clamp the bags and simultaneously flatten the openings of the two bags, it is necessary to drive the guide plate to move relative to the lifting plate so that the guide plate can simultaneously drive the two hot pressing components to close toward their respective centers until the hot pressing components contact the bags. The hot pressing components can then perform hot pressing and sealing on the openings of the bags to complete the simultaneous sealing of the two bags, thereby improving the efficiency of heat sealing.

[0026] 3. After the hot pressing block and the left pressing plate clamp the bag between them, the hot pressing block moves relative to the hot pressing plate, and the hot pressing rod shuttles inside the hot pressing plate, so that the hot pressing spring is compressed and generates elastic force, thereby completing the hot pressing process of the bag. Secondly, it can also have a buffering effect on the bag, thereby better protecting the bag, that is, avoiding the bag from being damaged during the hot pressing process between the left and right pressing pieces.

[0027] 4. During the operation of the power part, one of the opening component and the tension component moves relative to the fixed plate. That is, when the opening component moves relative to the fixed plate and the tension component remains stationary relative to the fixed plate, the opening component can be pressed against the clamping part of the retainer for clamping the bag. When the tension component moves relative to the fixed plate and the opening component remains stationary relative to the fixed plate, the retainer can be pulled to open, and the clamping part can release the clamping of the bag, that is, the retainer can release the bag.

[0028] 5. When placing the bag, people only need to place the bag in the holder, without having to manually align the bag's opening with the heat pressing mechanism. This can effectively improve the safety of the operation. Secondly, after people place the bag in the holder, the lifting mechanism, the tension mechanism and the holder cooperate to smoothly align the bag with the clamping mechanism, so that the heat pressing mechanism can smoothly heat-seal the bag's opening. This reflects the automation function of the heat pressing device, which is convenient for people to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of a preferred embodiment of the present invention.

[0030] Figure 2 This is an assembly diagram of the retainer and the tension mechanism.

[0031] Figure 3 It is a structural diagram of the open component.

[0032] Figure 4 It is a structural diagram of the tension component.

[0033] Figure 5 This is the motion state diagram of the upper drive plate and the upper roller.

[0034] Figure 6 It is the motion state diagram of the lower driving plate and the lower roller.

[0035] Figure 7 It is a structural diagram of the front shell.

[0036] Figure 8 It is a structural diagram of the gripper.

[0037] Figure 9 This is an assembly diagram of the clamping mechanism, lifting plate, and bag pulling assembly.

[0038] Figure 10 This is the assembly diagram of the clamping mechanism and the bag pulling component.

[0039] Figure 11 This is the assembly drawing of the lifting plate and the hot pressing mechanism.

[0040] Figure 12 yes Figure 11 Schematic diagram of the structure from another perspective.

[0041] Figure 13 It is a structural diagram of the guide plate.

[0042] Figure 14 It is a structural diagram of the right pressure piece.

[0043] Figure 15 It is a structural diagram of the left pressure piece. DETAILED DESCRIPTION

[0044] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0045] like Figure 1 — Figure 15 As shown, a hot pressing device suitable for bags of the present invention includes a lifting mechanism 100 , a lifting plate 110 , a tensioning mechanism 200 , a retainer 500 , a hot pressing mechanism 400 , and a clamping mechanism 300 .

[0046] A lifting plate 110 is movably provided on the lifting mechanism 100. The lifting plate 110 can be raised and lowered relative to the lifting mechanism 100. A tension mechanism 200 is provided on the lifting mechanism 100. A retainer 500 is provided on one side of the tension mechanism 200 and below the lifting plate 110. The retainer 500 can clamp at least two bags at the same time. A hot pressing mechanism 400 is movably provided on the bottom surface of the lifting plate 110. A pair of clamping mechanisms 300 for clamping the ends of each bag are also provided on the bottom surface of the lifting plate 110. One of the clamping mechanisms 300 can move relative to the lifting plate 110. When in use, people can first open the holder 500 through the tension mechanism 200 to place two bags in the holder 500, and expose the openings of the bags outside the holder 500. Thereafter, the tension mechanism 200 removes the force acting on the holder 500, so that the holder 500 can clamp the bags. Afterwards, when the lifting mechanism 100 drives the lifting plate 110 to descend to a preset position, that is, the clamping mechanism 300 opens to When the bag is close to the opening of the bag, the lifting plate 110 stops descending, and then the two clamping mechanisms 300 clamp the two ends of the two bags respectively. After that, the pulling mechanism 200 opens the retainer 500, and the retainer 500 will no longer clamp the bag. Then, one of the clamping mechanisms 300 moves relative to the lifting plate 110 in a direction away from the other clamping mechanism 300, so that the openings of the two bags can be flattened. After that, the heat pressing mechanism 400 heat presses the opening of the bag to seal the opening of the bag, and when the heat pressing is completed, the heat pressing mechanism 400 returns to its initial position, and the two clamping mechanisms 300 are released and returned to their initial state. The clamping mechanism 300 that was previously moved relative to the lifting plate 110 also returns to its initial position. In this process, the two bags automatically fall from the retainer, so that the two bags can be automatically heat-sealed, and wrinkles at the sealed opening of the bag can be avoided during the heat sealing process, and air leakage of the bag can be avoided, which effectively increases the aesthetics of the bag after heat sealing.

[0047] like Figure 11 — Figure 15As shown, the hot pressing mechanism 400 includes a guide plate 410 movably mounted on the lifting plate 110 and the same number of hot pressing components 420 as the bags. The guide plate 410 can move relative to the lifting plate 110, and the hot pressing components 420 can move relative to the lifting plate 110. The moving direction of the guide plate 410 is perpendicular to the moving direction of the hot pressing components 420. The guide plate 410 can drive the hot pressing components 420 to move. When the two clamping mechanisms 300 clamp the bags and flatten the openings of the bags, it is necessary to drive the guide plate 410 to move relative to the lifting plate 110 so that the guide plate 410 can simultaneously drive the two hot pressing components 420 to close toward their respective centers until the hot pressing components 420 contact the bags. The hot pressing components 420 can then perform hot pressing and sealing on the openings of the bags to complete the simultaneous sealing of the two bags, thereby improving the efficiency of heat sealing.

[0048] When the guide plate 410 moves relative to the lifting plate 110, the left pressure piece 421 will be affected by the path of the traction hole 411, so that the left pressure piece 421 moves accordingly relative to the lifting plate 110. At the same time, the right pressure piece 422 will also be affected by the path of the right inclined hole 412, so that the right pressure piece 422 moves accordingly relative to the lifting plate 110, that is, the right pressure piece 422 and the left pressure piece 421 are closed together, so that the bag between them can be hot-pressed; when the hot-pressing process is completed, the guide plate 410 moves in the opposite direction relative to the lifting plate 110, and the left pressure piece 421 and the right pressure piece 422 will also move in the opposite direction, thereby realizing that the hot-pressing assembly 420 releases the bag.

[0049] The left pressure piece 421 includes a left pressure plate 4211, and a left guide rod 4212 is provided on the left pressure plate 4211. The left guide rod 4212 passes through the lifting plate 110, and a left roller 4213 is provided at the end of the left guide rod 4212. The left roller 4213 is slidably inserted into the traction hole 411, and the traction hole 411 includes a left oblique hole 4111 and a vertical hole 4112. The extension line of the left oblique hole 4111 intersects with the extension line of the right oblique hole 412, and the left oblique hole 4111 and the right oblique hole 412 are in an eight-shaped shape, and the left oblique hole 4111 and the vertical hole 4112 are connected end to end. The right pressure piece 422 includes a right pressure seat 4221, and a hot pressing plate 4222 is provided on the side of the right pressure seat 4221 facing the left pressure piece 421. At least two hot pressing plates 4222 are movably provided on the hot pressing plate 4222. Pressure rod 4223, the ends of the two hot pressure rods 4223 are connected by a hot pressure block 4224, each of the hot pressure rods 4223 is provided with a hot pressure spring 4225, and the hot pressure spring 4225 is located between the hot pressure block 4224 and the hot pressure plate 4222, and the right pressure seat 4221 is provided with a right guide rod 4226, and the right guide rod 4226 passes through the lifting plate 110, and the end of the right guide rod 4226 is provided with a right roller 4227, and the right roller 4227 is slidably inserted into the right inclined hole 412; the bottom surface of the lifting plate 110 is provided with a fourth guide rail 111 that is slidably connected to the left pressure piece 421 and the right pressure piece 422, and the top surface of the lifting plate 110 is provided with a fifth guide rail 112 that is slidably connected to the guide plate 410, and the fourth guide rail 111 is perpendicular to the fifth guide rail 112.

[0050] When the guide plate 410 moves on the fifth guide rail 112 relative to the lifting plate 110, the left roller 4213 slides and is stuck in the traction hole 411, the right roller 4227 slides and is stuck in the right oblique hole 412, and the left pressure plate 4211 and the right pressure seat 4221 are both slidably connected to the fourth guide rail 111, so that the left roller 4213 slides from the left oblique hole 4111 to the vertical hole 4112 relative to the lifting plate 110, and the right roller 4227 slides from one end of the right oblique hole 412 away from the vertical hole 4112 to the other end relative to the lifting plate 110. At the same time, the left roller 4213 is connected to the left pressure plate 4211 through the left guide rod 4212, and the right roller 4227 is connected to the right pressure seat 4221 through the right guide rod 4226. When the left roller 4213 moves in the left oblique hole 4111, the left pressure plate 4211 will move relative to the lifting plate 110 along the fourth guide rail 111 toward the right pressure seat 4221; when the left roller 4213 moves in the vertical hole 4112, the left pressure plate 4211 will remain stationary relative to the lifting plate 110; when the right roller 4227 moves in the right oblique hole 412, the right pressure seat 4221 will move relative to the lifting plate 110 along the fourth guide rail 111 toward the left pressure plate 4211 until the hot pressing block 4224 on the right pressure seat 4221 contacts the left pressure plate 4211. Since the hot pressing block 4224 is always in an electrically heated state, the bag between the left pressure plate 4211 and the hot pressing block 4224 can be heat-sealed smoothly.

[0051] Furthermore, when the right pressure seat 4221 moves relative to the fourth guide rail 111, since the hot pressing block 4224 is installed on the hot pressing plate 4222 through the hot pressing rod 4223, the hot pressing plate 4222 and the right pressure seat 4221 are formed as one piece, so that the right pressure seat 4221 drives the hot pressing block 4224 to move synchronously, and when the hot pressing block 4224 and the left pressure plate 4211 clamp the bag located therebetween, the hot pressing block 4224 moves relative to the hot pressing plate 4222, and the hot pressing rod 4223 shuttles inside the hot pressing plate 4222, so that the hot pressing spring 4225 is compressed and generates elastic force, thereby completing the hot pressing process of the bag. Secondly, it can also have a buffering effect on the bag, thereby better protecting the bag, that is, avoiding the bag from being damaged during the hot pressing process of the left pressure piece 421 and the right pressure piece 422.

[0052] A rack 113 is provided on the top surface of the lifting plate 110, and a driving member 413 meshing with the rack 113 is provided on the guide plate 410. Specifically, the driving member 413 includes a third motor 4131, and the third motor 4131 is provided with an upper bevel gear 4132 and a coaxially arranged lower bevel gear 4133 and a third gear 4134. The lower bevel gear 4133 and the third gear 4134 are respectively located on both sides of the guide plate 410, and the third gear 4134 is meshed with the rack 113, and the lower bevel gear 4133 is meshed with the upper bevel gear 4132. When working, the third motor 4131 drives the upper bevel gear 4132 Rotation, because the upper bevel gear 4132 is engaged with the lower bevel gear 4133, and the lower bevel gear 4133 is connected to the third gear 4134 through the same shaft, the third gear 4134 is engaged with the rack 113, and the rack 113 is installed on the top of the lifting plate 110, so that the upper bevel gear 4132 can drive the lower bevel gear 4133 and the third gear 4134 to rotate at the same time, and then because the guide plate 410 is slidably installed on the lifting plate 110 through the fifth guide rail 112, so that when the third gear 4134 rolls on the rack 113, the guide plate 410 will move directionally along the trajectory of the fifth guide rail 112 relative to the lifting plate 110.

[0053] like Figure 9 — Figure 10 As shown, the lifting plate 110 is provided with a bag pulling assembly 114 for driving one of the clamping mechanisms 300 to move. The bag pulling assembly 114 is connected to the clamping mechanism 300, and the other clamping mechanism 300 is connected to the bottom surface of the lifting plate 110. Through the above structure, the two clamping mechanisms 300 can flatten the opening of the bag.

[0054] Furthermore, each of the clamping mechanisms 300 includes a back plate 310, which can be connected to the lifting plate 110 or the bag pulling assembly 114. Specifically, the back plate 310 of the clamping mechanism 300 slidably connected to the lifting plate 110 is connected to the bag pulling assembly 114, and the other back plate 310 is detachably connected to the bottom surface of the lifting plate 110, so that the bag pulling assembly 114 can drive the clamping mechanism 300 connected thereto to move away from the other clamping mechanism 300, that is, the distance between the two clamping mechanisms 300 can be increased, thereby flattening the opening of the bag located between the two clamping mechanisms 300.

[0055] A pair of movable plates 320 are slidingly provided on one side of the back plate 310, and each movable plate 320 is provided with two clamping rods 321, and each clamping rod 321 is located on the same plane. The clamping rods 321 on the two movable plates 320 are staggered. A second motor 330 is provided on the other side of the back plate 310, and the second motor 330 is provided with a second gear 331 that meshes with each movable plate 320. A third guide rail 311 is provided on the back plate 310 that is slidably connected to the movable plate 320. When the second motor 330 drives the second gear 331 to rotate, the two movable plates 320 are rotated. 20 are engaged with the second gear 331, so that the second gear 331 can drive the movable plate 320 to move on the corresponding third guide rail 311, and the two movable plates 320 are respectively located on both sides of the second gear 331, and the clamping rods 321 on the two movable plates 320 are staggered so that when the movable plate 320 moves, the two adjacent clamping rods 321 on different movable plates 320 can clamp the ends of the bag; secondly, because each movable plate 320 has two clamping rods 321, it can be achieved that one clamping mechanism 300 can clamp the ends of two bags at the same time.

[0056] The bag pulling assembly 114 includes a bag pulling motor 1141 provided on the lifting plate 110 and a clamping seat 1142 connected to one of the back plates 310. The bag pulling motor 1141 is provided with a screw rod 1143. The clamping seat 1142 is provided with a vertical plate 1144. The screw rod 1143 is threaded through the vertical plate 1144. The clamping seat 1142 can slide relative to the lifting plate 110. The bottom surface of the lifting plate 110 is provided with a slide rail 115. The clamping seat 1142 is provided with a slide rail 115 that is slidably connected to the slide rail 115. Block 1145, when the bag pulling motor 1141 drives the screw rod 1143 to rotate, since the clamping seat 1142, the vertical plate 1144 and the back plate 310 are connected by threads, the screw rod 1143 threads through the vertical plate 1144, so that the screw rod 1143 can drive the vertical plate 1144 and the back plate 310 to move in a directional manner along the track of the slide rail 115, that is, the clamping mechanism 300 connected to the bag pulling assembly 114 can move relative to the lifting plate 110, that is, the distance between the two clamping mechanisms 300 can be changed.

[0057] like Figure 1 — Figure 6As shown, the pulling mechanism 200 includes: a fixed plate 210 connected to the lifting mechanism, a pulling component 220 is provided on the fixed plate 210, and an opening component 230 is provided on the pulling component 220. The opening component 230 can make the holder 500 release the bag. The fixed plate 210 is provided with a power member 240 for driving the pulling component 220 and the opening component 230 to move. When the power member 240 is running, the opening component 230 and the pulling component 220 are selected to move relative to the fixed plate 210. That is, when the opening component 230 moves relative to the fixed plate 210 and the tension component 220 is stationary relative to the fixed plate 210, the opening component 230 can be pressed against the clamping part of the retainer 500 for clamping the bag. When the tension component 220 moves relative to the fixed plate 210 and the opening component 230 is stationary relative to the fixed plate 210, the retainer 500 can be pulled to open, and the clamping part releases the clamping of the bag, that is, the retainer 500 can release the bag.

[0058] The pulling assembly 220 includes a lower folding plate 221 provided on the fixed plate 210 and at least two pulling rods 222 that are movable through the lower folding plate 221. The two pulling rods 222 are connected by a pulling plate 223 at one end toward the retainer 500, and the other ends of the two pulling rods 222 are connected by a lower connecting plate 224. A lower driving plate 225 is slidingly provided on the lower folding plate 221 for driving the lower connecting plate 224 to move relative to the lower folding plate 221. When the power member 240 drives the lower driving plate 225 to move relative to the lower folding plate 221, the lower driving plate 225 will push the lower connecting plate 224 to move accordingly, so that the lower connecting plate 224 can drive the pulling rods 222 and the pulling plate 223 to move relative to the lower folding plate 221, and the pulling plate hooks the retainer 500, so that the pulling plate 223 can open the retainer 500.

[0059] The first spring 2221 is mounted on the pull rod 222, and the first spring 2221 is clamped between the pull plate 223 and the lower folding plate 221, wherein the movement direction of the lower driving plate 225 is perpendicular to the movement direction of the lower connecting plate 224. When the power part 240 drives the lower driving plate 225 to move relative to the lower folding plate 221, the lower roller 2241 will move back and forth on the second oblique edge 2251 and the second straight edge 2252. Specifically, when the lower roller 2241 is in close contact with the second oblique edge 2251, the second straight edge 2252 is engaged with the lower driving plate 225. When the second straight edge 2252 is closed, the lower connecting plate 224 is always stationary relative to the lower folding plate 221, so that the retainer 500 is in the closed state. At the same time, because the first spring 2221 is between the pulling plate 223 and the lower folding plate 221, a certain elastic force is also generated between the pulling plate 223 and the lower folding plate 221, that is, the lower roller 2241 on the lower connecting plate 224 can be attached to the second straight edge 2252.

[0060] An induction plate 226 is provided at one end of the lower connecting plate 224, and an induction foot 2261 is provided at the bottom edge of the induction plate 226. Two induction switches 227 corresponding to the induction feet 2261 are provided on the lower folding plate 221. The power member 240 and the clamping mechanism 300 are electrically connected to the induction switches 227. When the lower connecting plate 224 moves relative to the lower folding plate 221, the induction foot 2261 also moves synchronously with the lower connecting plate 224 to realize the induction foot 2261 moving back and forth between the two induction switches 227. Further, when the retainer 500 is in the closed state, the induction foot 2261 is located just above the induction switch 227 close to the retainer 500, and when the clamping mechanism After the second motor 330 of 300 controls the clamping rod 321 to clamp the bag, the second motor 330 transmits a signal to the first motor 241, the first motor 241 starts to operate, the lower connecting plate moves, and when the sensing foot 2261 is located directly above the sensing switch 227 away from the clamper, the first motor 241 stops running again. At this time, the retainer 500 has been fully opened. Afterwards, when the bags in the retainer 500 are heat-sealed and new bags are added, people need to control the first motor 241 to operate again until the sensing foot 2261 is located directly above the sensing switch 227 close to the retainer 500, the retainer 500 clamps the new bag, and the first motor 241 stops running.

[0061] The opening assembly 230 includes an upper folding plate 231 connected to the lower folding plate 221 and at least two opening rods 232 that move through the upper folding plate 231. The two opening rods 232 are connected by an upper connecting plate 233 at one end away from the retainer 500. The upper folding plate 231 is slidingly provided with an upper driving plate 234 for driving the upper connecting plate 233 to move relative to the upper folding plate 231. When the power part 240 drives the upper driving plate 234 to move relative to the upper folding plate 231, the upper driving plate 234 will push the upper connecting plate 233 to move accordingly, so that the upper connecting plate 233 can drive the opening rod 232 to move relative to the upper folding plate 231, thereby realizing that the opening rod 232 is against the clamping part on the retainer 500.

[0062] The bottom surface of the upper connecting plate 233 is provided with an upper roller 2331, and the side surface of the upper roller 2331 presses against the side edge of the upper driving plate 234 close to the retainer 500. The side edge of the upper driving plate 234 close to the retainer 500 is provided with a first oblique edge 2341 corresponding to the second straight edge 2252 and a first straight edge 2342 corresponding to the second oblique edge 2251. The upper folding plate 231 is provided with a second guide rail 2311 slidably connected to the upper driving plate 234, and the opening rod 232 is sleeved with a second spring 2321, and the second spring 2321 is stuck between the upper connecting plate 233 and the upper folding plate 231. When the power member 240 drives the upper driving plate 234 to move relative to the upper folding plate 231, the upper roller 2331 will move back and forth on the first oblique edge 2341 and the first straight edge 2342. Specifically, when the upper roller 233 When the upper connecting plate 233 is pressed against the first oblique edge 2341 and rolls toward the first straight edge 2342, the upper connecting plate 233 moves toward the retainer 500 until the opening rod 232 abuts against the clamping portion of the retainer 500. At the same time, the second spring 2321 is compressed, generating an elastic force between the upper connecting plate 233 and the upper folding plate 231, that is, enabling the upper roller 2331 on the upper connecting plate 233 to press against the first oblique edge 2341. When the upper roller 2331 rolls against the first straight edge 2342, the upper connecting plate 233 remains stationary relative to the upper folding plate 231, so that the opening rod 232 remains stationary relative to the upper folding plate 231. At the same time, due to the elastic force between the upper connecting plate 233 and the upper folding plate 231, the upper roller 2331 on the upper connecting plate 233 remains stationary relative to the first straight edge 2342.

[0063] A groove 2343 for accommodating the upper connecting plate 233 is provided on the upper driving plate 234 . The groove 2343 prevents the upper connecting plate 233 from affecting the movement of the upper driving plate 234 relative to the upper folding plate 231 .

[0064] In the present invention, the clamping claws 522 of the retainer 500 are the clamping parts of the retainer 500 .

[0065] like Figure 2 and Figure 7 — Figure 8As shown, the power member 240 includes a first motor 241 provided on the bottom surface of the fixed plate 210, the first motor 241 is provided with a first gear 242, the upper drive plate 234 and the lower drive plate 225 are both engaged with the first gear 242, the retainer 500 includes a rear shell 510 and a front shell 520, the rear shell 510 is provided with at least two retaining rods 511, the retaining rods 511 pass through the front shell 520, and the retaining rods 511 are each sleeved with a third spring 512, the third spring 512 2 is stuck between the end of the holding rod 511 away from the rear shell 510 and the front shell 520. The front shell 520 is provided with a bending plate 521 that is buckled with the pull plate 223. The two sides of the front shell 520 are hinged with clamping claws 522 for clamping the bag. The number of the clamping claws 522 is the same as the number of the opening rod 232. When the first motor 241 drives the first gear 242 to rotate, the upper driving plate 234 and the lower driving plate 225 are respectively located on both sides of the first gear 242, so that the upper driving plate 234 and the lower driving plate 225 are The moving direction of the plate 225 is opposite. Further, when the upper roller 2331 rolls on the first oblique edge 2341, the lower roller 2241 rolls on the second straight edge 2252, so that the opening rod 232 of the opening component 230 is extended until the opening rod 232 abuts against the clamping claw 522 of the retainer 500; when the upper roller 2331 rolls on the first straight edge 2342, the lower roller 2241 rolls on the second oblique edge 2251, so that the pulling plate 223 of the pulling component 220 is brought into contact with the pull plate 223 of the pulling component 220. The bent plate 521 of the retainer 500 is moved to separate the front shell 520 and the rear shell 510 of the retainer 500, thereby opening the retainer 500 and rotating the clamping claw 522 on the retainer 500, so that the clamping claw 522 releases the bag in the retainer 500. At the same time, the third spring 512 is compressed, and there is an elastic force between the front shell 520 and the rear shell 510, so that when the pull plate 223 is reset, the front shell 520 is automatically reset by the elastic force of the third spring 512.

[0066] Each of the clamping jaws 522 is provided with a contact plate 5221 and a soft block 5222. The soft block 5222 can be embedded in the front shell 520. The front shell 520 is provided with a rotating rod 523, which passes through the clamping jaws 522. A torsion spring 5231 is sleeved on the rotating rod 523. One end of the torsion spring 5231 abuts against the clamping jaw 522, and the other end abuts against the front shell 520, so that the clamping jaw 522 is not pressed against the front shell 520 when there is no external force. The soft block 5222 is embedded in the front shell 520, thereby clamping the bag in the holder 500, and when the opening rod 232 abuts the contact plate 5221 and the front shell 520 is separated from the rear shell 510, the contact plate 5221 on the clamping jaw 522 is blocked by the opening rod 232, the clamping jaw 522 rotates, and the soft block 5222 on the clamping jaw 522 is moved out of the front shell 520, so that the clamping jaw 522 no longer clamps the bag in the holder 500.

[0067] like Figure 1 As shown, the lifting mechanism 100 includes a side panel 120 and a lifting motor 130 for driving the lifting panel 110 to lift and lower. The lifting motor 130 is provided with a screw 131, and the screw 131 is threaded through the lifting panel 110. The side panel 120 is provided with at least two lifting guide rails 121, and the lifting guide rods movably pass through the lifting panel 110, wherein the fixed plate 210 is detachably connected to the side panel 120. When the lifting motor 130 drives the screw 131 to rotate, the lifting panel 110 will be lifted and lowered along the track of the lifting guide rails 121 to achieve lifting and lowering of the lifting panel 110 relative to the side panel 120.

Claims

1. A hot pressing device suitable for bags, characterized in that: include: A lifting mechanism, wherein a lifting plate is movably provided on the lifting mechanism, and the lifting plate can be raised and lowered relative to the lifting mechanism; The pulling mechanism is provided on the lifting mechanism; A retainer is provided on one side of the pulling mechanism and below the lifting plate, and the retainer can clamp at least two bags at the same time; A hot pressing mechanism is movably provided on the bottom surface of the lifting plate. A pair of clamping mechanisms for clamping the ends of each bag are also provided on the bottom surface of the lifting plate, and one of the clamping mechanisms is movable relative to the lifting plate. When the two clamping mechanisms clamp the ends of each bag respectively, the tension mechanism opens the holder, and the two clamping mechanisms flatten the openings of each bag, the heat pressing mechanism heat-seals the openings of each bag; The hot pressing mechanism includes a guide plate movably mounted on the lifting plate and the same number of hot pressing components as the bags. The guide plate can move relative to the lifting plate, and the hot pressing components can move relative to the lifting plate. The moving direction of the guide plate is perpendicular to the moving direction of the hot pressing components, and the guide plate can drive the hot pressing components to move. Each of the hot pressing components includes a left pressing member and a right pressing member that are slidably connected to the bottom surface of the lifting plate, and the guide plate is provided with a traction hole that is slidably connected to the left pressing member and a right oblique hole that is slidably connected to the right pressing member; The lifting plate is provided with a bag pulling assembly for driving one of the clamping mechanisms to move, the bag pulling assembly is connected to the clamping mechanism, and the other clamping mechanism is connected to the bottom surface of the lifting plate; The tension mechanism comprises: A fixed plate connected to the lifting mechanism; a tension component, arranged on the fixed plate; An opening assembly is provided on the tension assembly, the opening assembly can make the retainer release the bag, and a power member for driving the tension assembly and the opening assembly to move is provided on the fixing plate; When the power member is running, the opening assembly moves relative to the fixed plate and the tension assembly remains stationary relative to the fixed plate, or the tension assembly moves relative to the fixed plate and the opening assembly remains stationary relative to the fixed plate.

2. A hot pressing device suitable for bags according to claim 1, characterized in that: A rack is provided on the top surface of the lifting plate, and a driving member engaged with the rack is provided on the guide plate.

3. A hot pressing device suitable for bags according to claim 2, characterized in that: The driving member includes a third motor, which is provided with an upper bevel gear and a coaxially arranged lower bevel gear and a third gear. The lower bevel gear and the third gear are respectively located on both sides of the guide plate. The third gear is engaged with the rack, and the lower bevel gear is engaged with the upper bevel gear.

4. A hot pressing device suitable for bags according to claim 1, characterized in that: Each of the clamping mechanisms includes a back plate, which can be connected to a lifting plate or a bag pulling assembly. A pair of movable plates are slidingly provided on one side of the back plate, and each movable plate is provided with two clamping rods, each clamping rod is located on the same plane, and the clamping rods on the two movable plates are staggered. A second motor is provided on the other side of the back plate, and the second motor is provided with a second gear that meshes with each movable plate. A third guide rail is provided on the back plate that is slidably connected to the movable plate.

5. A hot pressing device suitable for bags according to claim 4, characterized in that: The bag pulling assembly includes a bag pulling motor arranged on the lifting plate and a clamping seat connected to one of the back plates. The bag pulling motor is provided with a screw rod, and the clamping seat is provided with a vertical plate. The screw rod thread passes through the vertical plate, and the clamping seat can slide relative to the lifting plate.

6. A hot pressing device suitable for bags according to claim 1, characterized in that: The lifting mechanism includes a side plate and a lifting motor for driving the lifting plate to lift. The lifting motor is provided with a screw, and the screw thread passes through the lifting plate. The side plate is provided with at least two lifting guide rails, and the lifting guide rails movably pass through the lifting plate.

Images