A multi-station packaging machine

Abstract

This invention discloses a multi-station packaging machine, relating to the field of packaging machinery and equipment technology, comprising: a main box body; a rotary conveyor assembly disposed within the main box body, wherein the packaging machine has a first station, a second station, a third station, and a fourth station arranged around the rotary conveyor assembly; the rotary conveyor assembly is provided with a rotatable clamping turntable, and the side of the clamping turntable is provided with clamping units for clamping bags; a bag-making assembly disposed at the first station, used for making bags, then labeling and / or heat-transfer coding to form a first bag and conveying it to the rotary conveyor assembly; a feeding assembly disposed at the second station, used for opening the first bag on the rotary conveyor assembly and feeding it to form a second bag; a sealing assembly disposed at the third station, used for sealing the second bag on the rotary conveyor assembly to form a target bag; and a discharge assembly, used for transporting the target bag to the next process; greatly improving space utilization and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery and equipment technology, and in particular to a multi-station packaging machine. Background Technology

[0002] In the packaging production of food, pharmaceuticals, and chemicals, automated bag making, filling, and sealing of materials are often required. Traditional packaging production lines typically consist of multiple independent pieces of equipment, such as bag making machines, labeling machines, feeding machines, and sealing machines connected in series via conveyor systems. This layout has significant drawbacks: First, the production line occupies a large area, and the equipment configuration and maintenance costs are high; second, when materials are transferred between the independent pieces of equipment, there are repetitive positioning issues, accumulated errors, and waiting intervals, which severely restrict overall production efficiency; third, the control systems of each piece of equipment are independent and lack coordination. When it is necessary to change to packaging bags of different sizes or specifications, each piece of equipment needs to be adjusted individually in a cumbersome manner, which is time-consuming, inflexible, and difficult to meet the needs of modern small-batch, multi-variety production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multi-station packaging machine with a compact layout, which realizes true single-machine continuous automated production and greatly improves space utilization and production efficiency.

[0004] To address the aforementioned technical problems, this invention provides a multi-station packaging machine, comprising: a main body; a rotary conveyor assembly disposed within the main body, wherein the packaging machine has a first station, a second station, a third station, and a fourth station arranged around the rotary conveyor assembly; the rotary conveyor assembly has a rotatable clamping turntable, and the side of the clamping turntable has clamping units for clamping bags; a bag-making assembly disposed at the first station, used for making bags, then labeling and / or heat-transfer coding to form a first bag and conveying it to the rotary conveyor assembly; a feeding assembly disposed at the second station, used for opening the first bag on the rotary conveyor assembly and feeding it to form a second bag; a sealing assembly disposed at the third station, used for sealing the second bag on the rotary conveyor assembly to form a target bag; and a discharge assembly disposed at the fourth station, used for transporting the target bag to the next process.

[0005] As an improvement to the above solution, the bag-making assembly includes: a take-up shaft for fixing the roll material; a mounting frame with multiple rollers for guiding the roll material transmission; a labeler located at the beginning of the roll material transmission path; a heat press located on the upper end of the mounting frame for heat-sealing the roll material; a punch fixed to the mounting frame for punching positioning holes in the roll material; a film cutting unit fixed to the mounting frame for cutting the roll material; a bag feeding robot located below the film cutting unit for conveying the cut bags to the rotary conveyor assembly; and a heat transfer coding machine located below the bag feeding robot for printing labels on the bags.

[0006] As an improvement to the above solution, the film cutting unit includes a film cutting opening disposed on the mounting frame and a rodless cylinder fixed to the side of the film cutting opening, wherein the power output end of the rodless cylinder is connected to a cutting blade that extends into the film cutting opening.

[0007] As an improvement to the above solution, the feeding assembly includes: a support frame with a feeding plate at its upper end and an opening on the feeding plate; a feeding hopper, which is vertically and flexibly disposed at the opening via a first drive cylinder, and a feeding nozzle at the lower end of the feeding hopper that is controlled to open and close by a second drive cylinder; a bag opening unit, disposed at the lower end of the feeding plate and below the feeding hopper, for opening the bag; a material support plate, fixed below the feeding plate, and having a vertical first slide rail and a material support frame slidably connected to the first slide rail; and a lifting drive screw, fixed to the material support plate, with its power output end connected to the material support frame.

[0008] As an improvement to the above solution, the bag-opening unit includes: two second slide rails arranged parallel to the opening side of the feeding plate; two sliding side plates, one end of which is slidably connected to the second slide rails, and the other end of the sliding side plates extends to below the opening, with multiple vacuum suction cups facing each other on the two sliding side plates; and a bag-opening drive unit, which is connected to the two sliding side plates respectively, for driving the two sliding side plates to slide.

[0009] As an improvement to the above solution, the edge sealing assembly includes: an edge sealing bracket, fixed to the upper end of the main box; a heat sealing clamp, fixed to the edge sealing bracket; and a drive cylinder, fixed to the edge sealing bracket, with its power output end connected to the heat sealing clamp, for driving the heat sealing clamp to seal the bag body.

[0010] As an improvement to the above solution, the rotary conveying assembly includes: a first support; a rotary drive motor fixed to the first support, the power output end of the rotary drive motor being connected to the clamping turntable via an indexer; and a drive unit disposed above the clamping turntable for driving the clamping unit to release the bag.

[0011] As an improvement to the above solution, the clamping unit includes: a mounting base, on which an adjusting rail is provided parallel to the outer edge of the clamping turntable; two spring clamps slidably connected to the adjusting rail via a first slider; wherein, the spring clamps are in a clamped state under normal conditions; when the driving unit presses the driving part of the spring clamps, the clamping part of the spring clamps opens; a driving gear is rotatably disposed in the middle of the mounting base, and the two spring clamps respectively mesh with the driving gear via a transmission rack, so as to drive the clamping unit to open the clamping part of the spring clamps. The distance between the two spring collets is adjusted by rotating the drive gear; the drive shaft has one end connected to the drive gear, and the other end passes through the mounting base and the bearing seat fixed to the lower end of the mounting base, and extends to the lower part of the bearing seat to connect with the bearing sleeve, the lower end of the bearing sleeve is provided with a brake block; an elastic locking member is sleeved on the bearing seat, and the clamping part of the elastic locking member clamps the drive shaft to prevent the drive shaft from rotating; a rotary drive member is set on the side below the clamping turntable near the second station to open the elastic locking member and drive the drive shaft to rotate.

[0012] As an improvement to the above solution, the drive unit includes: a mounting plate connected to the upper end of the main box and located above the clamping turntable; at least two spring drive cylinders fixed to the mounting plate, the power output ends of the two spring drive cylinders facing the first station and the fourth station respectively, and the power output ends are connected to drive rods for pressing the clamping unit at the corresponding station to release the bag.

[0013] As an improvement to the above solution, the rotary drive component includes: a second bracket with a vertical lifting rail; a sliding seat slidably connected to the lifting rail; an adjusting motor mounted on the sliding seat, with its power output end connected to a rotary seat for docking with the brake block; a lifting cylinder fixed to the second bracket, with its power output end connected to the sliding seat; and two slide cylinders fixed to both sides of the top of the sliding seat, with their power output ends connected to an unlocking top plate for opening the elastic locking component.

[0014] The beneficial effects of implementing this invention are as follows: This invention discloses a multi-station packaging machine that integrates four core stations—bag making, labeling, feeding, sealing, and discharging—in a circular fashion within the main box via a rotating conveyor assembly. These four stations operate synchronously and cyclically around a central rotation point, significantly improving space utilization and production efficiency. This eliminates the waiting time, accumulated positioning errors, and secondary handling issues associated with material transfer between independent devices in traditional assembly lines, greatly enhancing production efficiency and system continuity. All process actions are coordinated and scheduled by a single main control system around the rotation cycle, significantly reducing system complexity and improving operational stability and reliability compared to the complex control of multiple interconnected devices. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-station packaging machine according to an embodiment of this application; Figure 2 This is a top view of a multi-station packaging machine in this application embodiment, omitting the upper part of the main box; Figure 3 This is a schematic diagram of the structure of a rotary conveyor assembly of a multi-station packaging machine according to an embodiment of this application; Figure 4 This is a top view of the structure of a rotary conveyor assembly of a multi-station packaging machine according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the clamping unit of a multi-station packaging machine according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a rotary drive component of a multi-station packaging machine according to an embodiment of this application; Figure 7 This is a partial structural diagram of the cooperation between the rotary drive component and the elastic locking component of a multi-station packaging machine in an embodiment of this application; Figure 8 This is a schematic diagram of the bag-making component of a multi-station packaging machine according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the film cutting unit of a multi-station packaging machine according to an embodiment of this application; Figure 10 This is a schematic diagram of the feeding component of a multi-station packaging machine according to an embodiment of this application; Figure 11 This is a partial structural schematic diagram of the feeding component of a multi-station packaging machine according to an embodiment of this application; Figure 12 This is a schematic diagram of the sealing component of a multi-station packaging machine according to an embodiment of this application.

[0016] The reference numerals in the attached drawings are explained as follows: 100, main housing; 200, rotary conveyor assembly; 210, clamping turntable; 220, clamping unit; 221, mounting base; 222, adjusting rail; 223, spring chuck; 2231, drive unit; 2232, clamping unit; 224, drive gear; 225, transmission shaft; 226, bearing housing; 227, elastic locking element; 228, bearing sleeve; 230, first bracket; 24 0. Rotary drive motor; 250. Drive unit; 251. Mounting plate; 252. Spring drive cylinder; 253. Drive rod; 260. Rotary drive component; 261. Second bracket; 262. Sliding seat; 263. Adjusting motor; 264. Rotating seat; 265. Lifting cylinder; 266. Slide table cylinder; 267. Unlocking top plate; 300. Bag making assembly; 310. Take-up shaft; 320. Mounting frame; 330. Adhesive... 340. Labeler; 350. Hot press; 360. Punching machine; 361. Film cutting unit; 362. Rodless cylinder; 363. Cutting blade; 364. Guide column; 370. Bag feeding robot; 380. Heat transfer coding machine; 390. Film pressing unit; 400. Feeding assembly; 410. Support frame; 411. Feeding plate; 420. Feeding hopper; 421. First drive cylinder; 422. Second drive cylinder; 430. Bag opening form Yuan; 431, Second slide rail; 432, Sliding side plate; 433, Bag opening drive component; 434, Vacuum suction cup; 440, Material support plate; 441, First slide rail; 442, Material support frame; 450, Lifting drive screw; 500, Edge sealing assembly; 510, Edge sealing bracket; 520, Heat sealing clamp; 530, Drive cylinder; 600, Discharge assembly; 610, Discharge frame; 620, Discharge conveyor belt; 700, Electrical control box. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] See Figures 1-2 , Figure 1 This is a schematic diagram of the structure of a multi-station packaging machine according to an embodiment of this application; Figure 2This is a top view of a multi-station packaging machine in an embodiment of this application, omitting the upper part of the main body; as shown in the figure, the packaging machine includes: a main body 100; a rotary conveyor assembly 200 disposed within the main body 100, wherein the packaging machine has a first station, a second station, a third station, and a fourth station arranged around the rotary conveyor assembly 200; the rotary conveyor assembly 200 is provided with a rotatable clamping turntable 210, and the side of the clamping turntable 210 is provided with clamping units 220 for clamping bags; and a bag-making assembly 300 disposed within the main body 100. The first station is used to fabricate the bag body, apply labels and / or perform heat transfer coding to form the first bag body, and then convey it to the rotary conveyor assembly 200; the unloading assembly 400 is located at the second station and is used to unload the first bag body from the rotary conveyor assembly 200 to form the second bag body; the sealing assembly 500 is located at the third station and is used to seal the second bag body from the rotary conveyor assembly 200 to form the target bag body; the unloading assembly 600 is located at the fourth station and is used to transport the target bag body to the next process. The four core workstations of bag making (labeling), bag opening and filling, sealing, and material discharge are integrated in a ring within the main body 100 by the rotary conveyor assembly 200. The four workstations operate synchronously and cyclically around a rotating center, which greatly improves space utilization and production efficiency. It eliminates the waiting time, cumulative positioning errors, and secondary handling problems caused by material transfer between independent equipment in traditional assembly lines, and greatly improves production efficiency and system continuity. All process actions are coordinated and scheduled by a single main control system around the rotation rhythm. Compared with the complex control of multiple equipment linkage, this greatly reduces system complexity and improves operational stability and reliability.

[0019] Specifically, the bag-making assembly 300 produces a first bag with a label and heat transfer printing, and conveys and clamps it onto the clamping unit 220 of the rotary conveyor assembly 200. The rotary conveyor assembly 200 drives the clamping turntable 210 to precisely rotate the clamped first bag 90 degrees to the second station. The unloading assembly 400 opens the first bag and fills it with materials to form a second bag. The rotary conveyor assembly 200 rotates again by 90 degrees to send the second bag to the third station. The sealing assembly 500 seals the opening of the second bag to form the target bag. The rotary conveyor assembly 200 continues to rotate by 90 degrees to send the target bag to the fourth station. The unloading assembly 600 receives and transports the target bag to the next process.

[0020] Preferably, the multi-station packaging machine further includes an electrical control box 700, which is fixed to the outside of the main body 100. This frees up space inside the main body 100, which is beneficial for centralized heat dissipation and prevents heat from accumulating inside the sealed main body 100.

[0021] See Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of a rotary conveyor assembly 200 of a multi-station packaging machine according to an embodiment of this application; Figure 4 This is a top view of the structure of a rotary conveyor assembly 200 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the rotary conveying assembly 200 includes: a first support 230; a rotary drive motor 240 fixed to the first support 230, the power output end of the rotary drive motor 240 being connected to the clamping turntable 210 via an indexer; and a drive unit 250 disposed above the clamping turntable 210 for driving the clamping unit 220 to release the bag. The rotary drive motor 240 drives the clamping turntable 210 to perform precise intermittent indexing rotation via the indexer, ensuring the accuracy of each rotation angle and enabling the bag to be precisely aligned at each workstation.

[0022] See Figure 3 and Figure 5 , Figure 5 This is a schematic diagram of the structure of the clamping unit 220 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the clamping unit 220 includes: a mounting base 221, on which an adjusting rail 222 is provided parallel to the outer edge of the clamping turntable 210; two spring collets 223, which are slidably connected to the adjusting rail 222 via a first slider; wherein, the spring collets 223 are in a clamped state under normal conditions; when the driving unit 250 presses the driving part 2231 of the spring collets 223, the clamping part 2232 of the spring collets 223 opens; a driving gear 224 is rotatably disposed in the middle of the mounting base 221, and the two spring collets 223 respectively mesh with the driving gear 224 via a transmission rack, so as to pass through the driving gear 224 rotates to adjust the distance between the two spring collets 223; a drive shaft 225, one end of which is connected to the drive gear 224, and the other end passes through the mounting base 221 and the bearing seat 226 fixed to the lower end of the mounting base 221 in sequence, and extends to the lower part of the bearing seat 226 to connect with the bearing sleeve 228, the lower end of the bearing sleeve 228 is provided with a brake block; an elastic locking member 227 is sleeved on the bearing seat 226, the clamping part 2232 of the elastic locking member 227 clamps the drive shaft 225 to prevent the drive shaft 225 from rotating; a rotation drive member 260 is set below the clamping turntable 210 on the side near the second station, and is used to open the elastic locking member 227 and drive the drive shaft 225 to rotate. The adjustable function of the drive gear 224 allows the equipment to quickly adapt to bags of different widths, enhancing the versatility of the clamping unit 220; the elastic locking element 227 provides a firm mechanical lock after adjustment, ensuring that the clamping distance remains absolutely constant during the conveying process, solving the key problem that the adjustable mechanism is prone to loosening under vibration, causing the bag to fall off.

[0023] See Figure 4 Furthermore, in this embodiment, the drive unit 250 includes: a mounting plate 251 connected to the upper end of the main housing 100; specifically, the mounting plate 251 is fixedly connected to the upper crossbeam of the main housing 100 and located above the clamping turntable 210; at least two spring drive cylinders 252 fixed to the mounting plate 251, with the power output ends of the two spring drive cylinders 252 facing the first and fourth workstations respectively, and the power output ends are connected to drive rods 253 for pressing the clamping unit 220 at the corresponding workstations to release the bag. Normally, the spring clamps 223 clamp the bag using their own elasticity. Integrating the clamping unit 220 above the rotating axis results in a compact structure. When the drive rod 253 presses down on the drive part 2231, the clamps open, receiving the bag at the first workstation and releasing the bag at the fourth workstation. The control logic is simple and reliable, ensuring accurate and error-free operation at the two key nodes of bag receiving and finished product release.

[0024] See Figure 6 and Figure 7, Figure 6 This is a schematic diagram of the structure of the rotary drive component 260 of a multi-station packaging machine according to an embodiment of this application; Figure 7 This is a partial structural diagram of the cooperation between the rotary drive component 260 and the elastic locking component 227 of a multi-station packaging machine in an embodiment of this application; Furthermore, in this embodiment, the rotary drive component 260 includes: a second bracket 261, on which a vertical lifting rail is provided; a sliding seat 262, slidably connected to the lifting rail; an adjusting motor 263, disposed in the mounting groove of the sliding seat 262, the power output end of which is connected to a rotary seat 264 for docking with the brake block; a lifting cylinder 265, fixed to the second bracket 261, the power output end of which is connected to the sliding seat 262; and two sliding cylinders 266, respectively fixed to both sides of the top of the sliding seat 262, the power output ends of which are connected to an unlocking top plate 267 for opening the elastic locking component 227. The lifting cylinder 265 drives the sliding seat 262 to rise along the lifting track, causing the rotating seat 264 to align with the lower end of the drive shaft 225 of the clamping unit 220. Simultaneously, the unlocking top plate 267 rises accordingly. The upper end of the unlocking top plate 267 has an arrowhead that extends between the two drive blocks of the clamping part 2232. The slide cylinder 266 actuates, driving the unlocking top plates 267 on both sides to open the clamping part 2232 of the elastic locking member 227, releasing the lock on the drive shaft 225. The adjusting motor 263 drives the drive shaft 225 to rotate via the rotating seat 264, adjusting the spacing. After adjustment, all cylinders reset, the sliding seat 262 descends, and the elastic locking member 227 automatically returns to its locked state. The entire adjustment process is automatically completed by the rotating drive component 260 without manual intervention, achieving automation of clamping specification changes.

[0025] See Figure 8 , Figure 8 This is a schematic diagram of the structure of a bag-making component 300 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the bag-making assembly 300 includes: a take-up shaft 310 for fixing the roll material; a mounting frame 320 with multiple rollers for guiding the roll material transmission; a labeler 330 located at the beginning of the roll material transmission path; a heat press 340 located on the upper end of the mounting frame 320 for heat-sealing the roll material; a punch 350 fixed to the mounting frame 320 for punching positioning holes in the roll material; a film cutting unit 360 fixed to the mounting frame 320 for cutting the roll material; a bag feeding robot 370 located below the film cutting unit 360 for conveying the cut bags to the rotary conveyor assembly 200; and a heat transfer coding machine 380 located below the bag feeding robot 370 for printing labels on the bags. After being labeled, hot-pressed into a tube, and punched, the roll material is cut into individual bags by the film cutting unit 360 and conveyed to the bag feeding robot 370. After being labeled by the heat transfer coding machine 380, the bag feeding robot 370 picks up the bag and transfers it to the rotary conveyor assembly 200. The labeling and printing processes are seamlessly integrated into the bag making process, and the labeling is completed at the same time as the bag is formed. This eliminates the need for subsequent separate labeling processes and equipment, simplifies the process, and ensures the consistency of the label position.

[0026] Preferably, a film-pressing unit 390 is also provided above the film-cutting unit 360 for pressing the film before cutting. The film in the pressed state will not undergo localized deformation or stretching when cut. This results in smooth, neat cut edges without burrs or stringing.

[0027] See Figure 9 , Figure 9 This is a schematic diagram of the structure of the film cutting unit 360 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the film cutting unit 360 includes a film cutting opening disposed on the mounting bracket 320, and a rodless cylinder 361 fixed to the side of the film cutting opening. The power output end of the rodless cylinder 361 is connected to a cutting blade 362 that extends into the film cutting opening.

[0028] Preferably, the rodless cylinder 361 has a guide post 363 on the side away from the cutting opening, and the rodless cylinder 361 is connected to the guide post 363. This ensures that the cutting blade 362 connected to the rodless cylinder 361 moves in an absolutely straight and chatter-free trajectory throughout the entire cutting stroke, thereby obtaining an extremely straight and precise cut.

[0029] See Figure 10 , Figure 10 This is a schematic diagram of the structure of the feeding component 400 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the feeding assembly 400 includes: a support frame 410, with a feeding plate 411 at its upper end, the feeding plate 411 having an opening; a feeding hopper 420, which is vertically and flexibly disposed at the opening via a first drive cylinder 421, the lower end of the feeding hopper 420 having a feeding nozzle controlled to open and close by a second drive cylinder 422; a bag opening unit 430, disposed at the lower end of the feeding plate 411 and located below the feeding hopper 420, for opening the bag body; a material support plate 440, fixed below the feeding plate 411, the material support plate 440 having a vertical first slide rail 441 and a material support frame 442 slidably connected to the first slide rail 441; and a lifting drive screw 450, fixed to the material support plate 440, its power output end being connected to the material support frame 442. During operation, the first bag is conveyed by the rotating conveyor assembly 200 to the corresponding position above the feeding plate 411. The bag opening unit 430 opens the bag, and the lifting drive screw 450 drives the material support frame 442 to rise, supporting the bottom of the bag. The first drive cylinder 421 drives the feeding hopper 420 to descend, allowing the feeding nozzle to enter the open bag opening. The second drive cylinder 422 opens the feeding nozzle to fill the bag. This ensures that the bag remains fully open at the opening and that the bottom has a shaking material support plate 440, effectively preventing the material from exceeding the sealing safety line during filling, which could lead to the material being pressed during sealing and causing a non-compliant seal. This greatly improves the cleanliness of filling and the success rate of sealing. The liftable feeding hopper 420 achieves flexible and precise docking with the bag opening, avoiding rigid collisions. The entire process is coordinated and orderly, improving feeding efficiency and reliability.

[0030] Preferably, the drive motor of the lifting drive screw 450 is connected to the rod of the lifting screw via a synchronous belt. Synchronous belt drive has buffering and vibration damping characteristics, effectively absorbing instantaneous impacts and fluctuations during the start-up, stopping, and operation of the drive motor. This ensures smooth and seamless rising and falling movements of the material support frame 442.

[0031] See Figure 11 , Figure 11 This is a partial structural schematic diagram of the feeding component 400 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the bag-opening unit 430 includes: two second slide rails 431, arranged parallel to the opening side of the feeding plate 411; two sliding side plates 432, one end of which is slidably connected to the second slide rails 431, and the other end of the sliding side plates 432 extends below the opening; the two sliding side plates 432 are provided with multiple vacuum suction cups 434 facing each other; and a bag-opening driving member 433, connected to the two sliding side plates 432 respectively, for driving the two sliding side plates 432 to slide. The bag-opening driving member 433 drives the two sliding side plates 432 to move towards each other along the second slide rails 431, so that the vacuum suction cups 434 on them contact and adsorb the sides of the bag body. Subsequently, the sliding side plates 432 move away from each other, smoothly opening the bag opening. Vacuum adsorption causes less damage to the bag body and is suitable for more fragile packaging materials.

[0032] Preferably, the bag-opening drive component 433 is a transmission belt arranged in a ring around the opening and the second slide rail 431; the two sliding side plates 432 are respectively connected to the transmission belt on the same side; and are driven uniformly by a motor of the transmission belt. By using a closed-loop annular transmission belt and driving it with a single motor, the mechanical structure forces the two sliding side plates 432 connected to both sides of the transmission belt to maintain a completely mirror-synchronous movement speed, displacement, and direction at all times, avoiding the asynchronous problem caused by multiple drive components.

[0033] See Figure 12 , Figure 12 This is a schematic diagram of the sealing assembly 500 of a multi-station packaging machine according to an embodiment of this application; Furthermore, in this embodiment, the sealing assembly 500 includes: a sealing bracket 510 fixed to the upper end of the main housing 100; a heat-sealing clamp 520 fixed to the sealing bracket 510; and a drive cylinder 530 fixed to the sealing bracket 510, with its power output end connected to the heat-sealing clamp 520 for driving the heat-sealing clamp 520 to seal the bag. When the bag rotates to the third position and is positioned, the drive cylinder 530 actuates, pushing the heat-sealing clamp 520 to close, performing heat-sealing on the upper opening of the bag. After completion, the heat-sealing clamp 520 opens. The sealing assembly 500 is directly installed on the main housing 100, requiring no independent workstation, offering fast response and high integration with the rotary conveyor system.

[0034] See Figure 1Furthermore, in this embodiment, the discharge assembly 600 includes a discharge rack 610 and a discharge conveyor belt 620. One end of the discharge rack 610 is located at the fourth station, and the other end of the conveyor belt extends through the discharge port of the main housing 100 to the next process. The discharge conveyor belt 620 is located above the discharge rack 610. After the target bag is released at the fourth station, it directly enters the discharge conveyor belt 620 and is conveyed to the next process. This ensures the continuity of the production cycle and avoids downtime caused by finished product retention.

[0035] Furthermore, this embodiment provides a packaging method for a multi-station packaging machine, including the following steps: S1: The bag-making assembly 300 makes the first bag body and passes it to the rotary conveyor assembly 200; Specifically, the roll material is unwound from the take-up reel 310, conveyed by rollers, and labeled by the labeler 330 at a preset position; then, the roll material is longitudinally heat-sealed by the hot press 340 to form a tubular film material, and positioning holes are punched by the puncher 350; it is cut by the film cutting unit 360 to form an independent bag body and conveyed to the bag feeding robot 370, and after the thermal transfer coding machine 380 prints information at the designated position, the first bag body is formed. At this time, the spring drive cylinder 252 in the drive unit 250 located above the first work station is activated, and its drive rod 253 extends forward, forcing the spring clamp 223 of the corresponding clamping unit 220 to temporarily open; the bag feeding robot 370 places the upper edge of the bag opening of the first bag body into the open clamping part 2232; then the drive rod 253 retracts, and the spring clamp 223 automatically clamps the first bag body under its own elastic force; S2: The rotary conveyor 200 conveys the first bag to the second station, and the unloading component 400 opens the first bag and fills it with materials to form the second bag. Specifically, after clamping the first bag, the rotary drive motor 240 of the rotary conveying assembly 200 drives the clamping turntable 210 to rotate precisely 90 degrees through the indexer, and conveys the first bag to the second station. At the second station, if different bag widths need to be accommodated, an adjustment procedure is executed: the lifting cylinder 265 of the rotary drive 260 pushes the sliding seat 262 upward, causing the unlocking top plate 267 to insert and push open the clamping part 2232 of the elastic locking member 227 to unlock. At the same time, the rotary seat 264 connects with the lower end of the drive shaft 225. The adjusting motor 263 drives the drive shaft 225 and the drive gear 224 to rotate, which drives the two spring clamps 223 to move synchronously along the adjusting track 222 through the meshing rack, reducing the distance between the two spring clamps 223, making the bag opening of the first bag body loose and easy to open. After the adjustment is completed, all components of the rotary drive 260 reset, and the elastic locking member 227 automatically locks the drive shaft 225 to fix the distance.

[0036] The feeding assembly 400 starts working, the vacuum suction cup 434 of the bag opening unit 430 adsorbs the two sides of the bag body, and the bag opening drive component 433 drives the two sliding side plates 432 to slide in opposite directions, opening the bag mouth; at the same time, the lifting drive screw 450 drives the material support frame 442 to rise until it supports the bottom of the bag body; the feeding hopper 420 descends under the action of the first drive cylinder 421, so that its feeding nozzle extends into the opened bag mouth; the second drive cylinder 422 opens the feeding nozzle, loading a predetermined amount of material into the bag to form a second bag body; after filling is completed, the feeding nozzle closes, the feeding hopper 420 rises, the vacuum suction cup 434 is released, the material support frame 442 descends, and all components reset.

[0037] The lifting cylinder 265 of the rotary drive 260 pushes the sliding seat 262 upward, causing the unlocking top plate 267 to insert and push open the clamping part 2232 of the elastic locking member 227 to unlock. At the same time, the rotating seat 264 docks with the lower end of the drive shaft 225. The adjusting motor 263 drives the drive shaft 225 and the drive gear 224 to rotate, which drives the two spring clamps 223 to move synchronously along the adjusting track 222 through the meshing rack, increasing the distance between the two spring clamps 223, so that the bag opening of the second bag is straightened, which is convenient for sealing, and ensures that the two spring clamps 223 maintain the initial position in the next cycle. Then the rotary drive 260 resets.

[0038] S3: The rotary conveyor assembly 200 conveys the second bag to the third station, and the sealing assembly 500 seals the opening of the second bag to form the target bag. Specifically, the rotary conveyor 200 drives the clamping turntable 210 to rotate precisely 90 degrees again, conveying the second bag that has been filled to the third station; The drive cylinder 530 of the sealing assembly 500 is activated, pushing the heat sealing clamp 520 to close, and heat-sealing the upper bag opening of the second bag body. After the sealing is completed, the heat sealing clamp 520 opens to form the target bag body.

[0039] S4: The rotary conveyor assembly 200 conveys the target bag to the fourth station and releases it to the discharge assembly 600, which outputs the target bag. Specifically, the rotary conveyor assembly 200 continues to drive the clamping turntable 210 to rotate 90 degrees, conveying the target bag to the fourth station. At this time, the drive unit 250 located above the fourth station activates, forcing the spring clamps 223 of the corresponding clamping unit 220 to open and release the target bag. The released target bag falls onto the discharge conveyor belt 620 of the discharge assembly 600. The discharge conveyor belt 620 starts, smoothly conveying the target bag through the discharge port of the main housing 100 to the next process.

[0040] Preferably, steps S1 to S4 can be run simultaneously, allowing the four processes of bag making (labeling), bag opening and filling, sealing, and unloading to be carried out in parallel. This eliminates waiting time between processes, maximizes equipment time utilization, and doubles production capacity. At the same time, all station actions are triggered by a unified rotational indexing cycle, greatly simplifying the control logic and improving system stability and reliability.

[0041] As can be seen from the above, the multi-station packaging machine of the present invention integrates four core stations—bag making, labeling, feeding, sealing, and discharging—in a ring within the main box body through a rotating conveyor assembly. The four stations operate synchronously and cyclically around a rotating center, greatly improving space utilization and production efficiency. It eliminates the waiting time, accumulated positioning errors, and secondary handling problems associated with material transfer between independent devices in traditional assembly lines, significantly enhancing production efficiency and system continuity. All process actions are coordinated and scheduled by a single main control system around the rotation rhythm, which greatly reduces system complexity and improves operational stability and reliability compared to the complex control of multiple devices working together.

[0042] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multi-station packaging machine, characterized in that, include: main box; A rotary conveyor assembly is disposed within the main box. The packaging machine has a first station, a second station, a third station, and a fourth station arranged around the rotary conveyor assembly. The rotary conveyor assembly is provided with a rotatable clamping turntable, and the side of the clamping turntable is provided with clamping units for clamping the bag body. A bag-making assembly, located at the first workstation, is used to make a bag body, then label and / or heat transfer coding to form a first bag body and convey it to the rotary conveyor assembly. A feeding assembly, located at the second work station, is used to feed the first bag body from the rotary conveyor assembly after it has been opened to form a second bag body. An edge-sealing assembly, located at the third work station, is used to seal the edges of the second bag on the rotary conveyor assembly to form a target bag. The discharge assembly, located at the fourth station, is used to transport the target bag to the next process.

2. The multi-station packaging machine according to claim 1, characterized in that, The bag-making assembly includes: A take-up shaft is used to hold the rolled material in place. The mounting frame has multiple rollers for guiding the transport of the roll material; Labeler, located at the beginning of the roll material transport path; A hot press, located at the upper end of the mounting frame, is used to hot press and seal the roll material. A punch, fixed to the mounting bracket, is used to punch positioning holes in the coil. A film cutting unit, fixed to the mounting frame, is used to cut the roll material; A bag-feeding robot is positioned below the film-cutting unit to transport the cut bags to the rotary conveyor assembly. A heat transfer coding machine is located below the bag-feeding robot and is used to print labels on the bag.

3. The multi-station packaging machine according to claim 2, characterized in that, The film cutting unit includes a film cutting opening disposed on the mounting frame, and a rodless cylinder fixed to the side of the film cutting opening. The power output end of the rodless cylinder is connected to a cutting blade that extends into the film cutting opening.

4. The multi-station packaging machine according to claim 1, characterized in that, The feeding assembly includes: A support frame, the upper end of which is provided with a feeding plate, and the feeding plate is provided with an opening; The feeding hopper is vertically and flexibly positioned at the opening via a first drive cylinder, and the lower end of the feeding hopper is provided with a feeding nozzle controlled to open and close by a second drive cylinder; The bag opening unit is located at the lower end of the feeding plate and below the feeding hopper, and is used to open the bag body; A material support plate is fixed below the material feeding plate. The material support plate is provided with a vertical first slide rail and a material support frame that is slidably connected to the first slide rail. The lifting drive screw is fixed to the material support plate, and its power output end is connected to the material support frame.

5. The multi-station packaging machine according to claim 4, characterized in that, The bag-opening unit includes: Two second slide rails are arranged parallel to the opening side of the feed plate; Two sliding side plates, one end of which is slidably connected to the second slide rail, and the other end of the sliding side plates extends to the bottom of the opening. Multiple vacuum suction cups are provided on the two sliding side plates facing each other. The bag-opening drive unit is connected to the two sliding side plates respectively, and is used to drive the two sliding side plates to slide.

6. The multi-station packaging machine according to claim 1, characterized in that, The edge banding assembly includes: Edge sealing bracket, fixed to the upper end of the main housing; A heat-sealing clip is fixed to the edge-sealing bracket; A drive cylinder is fixed to the sealing bracket, and its power output end is connected to the heat sealing clamp to drive the heat sealing clamp to seal the bag body.

7. The multi-station packaging machine according to claim 1, characterized in that, The rotary conveyor assembly includes: First support; A rotary drive motor is fixed to the first bracket, and the power output end of the rotary drive motor is connected to the clamping turntable through an indexer; A drive unit is located above the clamping turntable and is used to drive the clamping unit to release the bag.

8. The multi-station packaging machine according to claim 7, characterized in that, The clamping unit includes: Mounting base, wherein the mounting base is provided with an adjustment rail arranged parallel to the outer edge of the clamping turntable; Two spring clips are slidably connected to the adjustment rail via a first slider; The spring collet is normally in a clamped state; when the driving unit presses the driving part of the spring collet, the clamping part of the spring collet opens. A drive gear is rotatably disposed in the middle of the mounting base. The two spring collets are respectively meshed with the drive gear through a transmission rack, so as to adjust the distance between the two spring collets by rotating the drive gear. A drive shaft, one end of which is connected to the drive gear, and the other end passes through the mounting base and the bearing seat fixed to the lower end of the mounting base in sequence, and extends to the lower part of the bearing seat to connect with the bearing sleeve. The lower end of the bearing sleeve is provided with a brake block. An elastic locking element is sleeved on the bearing housing, and the clamping part of the elastic locking element clamps the drive shaft to prevent the drive shaft from rotating. A rotary drive component is located below the clamping turntable on the side near the second station, and is used to open the elastic locking component and drive the transmission shaft to rotate.

9. The multi-station packaging machine according to claim 7, characterized in that, The driving unit includes: The mounting plate is connected to the upper end of the main housing and is located above the clamping turntable; At least two spring-driven cylinders are fixed to the mounting plate. The power output ends of the two spring-driven cylinders are respectively oriented towards the first and fourth work positions, and the power output ends are connected to drive rods for pressing the clamping unit at the corresponding work positions to release the bag.

10. The multi-station packaging machine according to claim 8, characterized in that, The rotary drive component includes: The second support is equipped with a vertical lifting track; The sliding seat is slidably connected to the lifting track; An adjustment motor is mounted on the sliding seat, and its power output end is connected to a rotating seat for docking with the brake block; A lifting cylinder is fixed to the second bracket, and its power output end is connected to the sliding seat; Two slide cylinders are fixed on both sides of the top of the slide seat, and their power output ends are connected to an unlocking top plate for opening the elastic locking member.

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