A packaging machine suitable for separating the inside and outside of packaging bags

Abstract

The present invention discloses a packaging machine adapted to the inner and outer separation of packaging bags, including a bag storage unit and a main unit. The bag storage unit includes a distribution box, a bag storage frame and a bag taking mechanism. The main unit includes a main upper frame, a secondary upper frame and a chassis. A transport trolley is also provided on the chassis. A hopper mechanism, a bag smoothing mechanism, a bag tying mechanism and a bag pushing mechanism are arranged from front to back above the transport trolley and on the main upper frame. A bag loading mechanism and a folding and sewing mechanism are also provided. The beneficial effects of the present invention are as follows: by arranging the bag loading mechanism, the bag smoothing mechanism, the bag tying mechanism and the bag pushing mechanism, the automatic bag loading, tying and folding and sewing of the inner and outer separation packaging bags can be realized, and the automation of the process for the inner and outer separation packaging bags can be realized; the whole process can be automated and the faults can be automatically handled, the working conditions can be improved, personal accidents can be avoided, the production efficiency can be improved, and the production cost can be reduced; the whole process is safe, reliable, fast and efficient, and can be widely promoted and used.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic packaging of packaging bags, and in particular relates to a packaging machine that is adapted to the separation of the inside and outside of packaging bags. Background Art

[0002] In recent years, industries like feed and food have experienced unprecedented rapid growth. However, with rising costs for raw materials, logistics, marketing, and labor, increasing demands for energy conservation and environmental protection both domestically and internationally, and the accelerating pace of industry groupization, scale, and internationalization, companies in these industries are facing challenges in cost control and product upgrades. Furthermore, with consumers demanding higher and higher product quality and diversity, innovation in production processes and equipment is imperative.

[0003] In modern industry, automation in the production process has become a prominent theme, with increasing levels of automation across all industries. Modern processing workshops are often equipped with automated equipment to improve production efficiency and complete tasks that are difficult or dangerous for workers. This is particularly true in the packaging process for bagged raw materials. Most production lines are unable to solve the problem of separate inner and outer packaging. Manual bagging, tying the inner bag, and feeding the bag into the folding and sewing equipment are still required. This labor-intensive process leads to high rates of work-related accidents and low efficiency, increasing production and management costs in industries such as feed and food. Summary of the Invention

[0004] The technical problem addressed by this invention is the difficulty in automating the production of packaging bags with separate inner and outer bags. This invention can be directly applied to bagged materials on a production line, achieving fully automated functions such as automatic bagging and bag tying, making the entire process safe, reliable, fast, and efficient. This invention is suitable for widespread use in industries such as feed and food, where working environments are harsh, labor-intensive, and workloads are high.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a packaging machine adapted to the separation of the inner and outer parts of the packaging bag, including a bag storage unit and a main unit, characterized in that: the bag storage unit includes a distribution box, a bag storage rack and a bag taking mechanism, and the main unit includes a main upper rack, an auxiliary upper rack and a chassis,

[0006] The bag taking mechanism is arranged on one side of the main upper frame and is perpendicular to the main upper frame. The distribution box is arranged on the right side of the bag taking mechanism, and the bag storage rack is arranged on the left side of the bag taking mechanism. The auxiliary upper frame is arranged on the left side of the main upper frame and is parallel to the main upper frame. The chassis is arranged below the main upper frame and the auxiliary upper frame, and passes through the main upper frame and the auxiliary upper frame in sequence from front to back.

[0007] A transport trolley is also provided on the chassis. A hopper mechanism, a bag-smoothing mechanism, a bag-binding mechanism, and a bag-pushing mechanism are sequentially provided from front to back above the transport trolley and on the main upper frame. A bag-loading mechanism is also provided on one side of the hopper mechanism and above the bag-taking mechanism. A folding and sewing mechanism is also provided above the transport trolley and on the auxiliary upper frame.

[0008] The bag-taking mechanism transports the packaging bags in the bag storage rack to the bag-loading mechanism, and the loading mechanism sends the packaging bags to the hopper mechanism for loading. The loaded packaging bags are transported downward by the transport trolley in sequence through the bag-smoothing mechanism, the bag-tying mechanism, and the bag-pushing mechanism, and then transported by the chassis to the folding and sewing mechanism to complete the loading and packaging.

[0009] Preferably, the bag loading mechanism includes a connecting bracket, one side of the connecting bracket is connected to the bag storage rack through a connecting plate, and the other side is connected to a swing assembly, and the swing assembly is connected to a bag-supporting swing arm through a swing arm cylinder; the hopper mechanism is arranged above the bag-supporting swing arm, a support is provided on the upper part of the hopper mechanism, and a clamping bag-supporting mechanism is provided on the lower part, a bag-supporting cylinder is provided on the support, and the piston rod of the bag-supporting cylinder is connected to the clamping bag-supporting mechanism through a connecting arm.

[0010] Preferably, the bag-smoothing mechanism comprises a bag-smoothing bracket, a lifting assembly is provided above the bracket, an elastic bag-smoothing mechanism is connected to the bracket below via a tension adjustment assembly, a telescopic connection mechanism is further provided inside the bracket, an exhaust pipe is provided above the telescopic connection mechanism and at the top of the bracket, and a bag-supporting assembly plate is provided below;

[0011] The elastic bag-stretching mechanism includes a frame, and spring pressure plates are provided on both side frames of the frame. The spring pressure plates pass through the tension adjustment assembly and the frame frame and extend toward the center of the frame.

[0012] The spring pressure plates are symmetrically arranged on the front and rear frames of the frame. The spring pressure plates extend inwards and act on the front and rear outer walls of the bag opening. The bag support assembly plate extends into the bag opening and expands outwards, acting on the front and rear inner walls of the bag opening. The spring pressure plates and the bag support assembly plate jointly open the bag opening.

[0013] The tension adjustment assembly includes a connecting plate and a telescopic mechanism, wherein the upper end of the connecting plate is connected to the bracket, and the lower end is connected to the side frame of the elastic bag-smoothing mechanism frame; the telescopic mechanism includes a telescopic cylinder and a connecting block connected to its piston rod, the telescopic cylinder is arranged on the bracket, and the connecting block is connected to the upper part of the elastic bag-smoothing mechanism frame;

[0014] The lifting assembly includes a pulley lifting mechanism and a cylinder lifting mechanism. The pulley lifting mechanism includes a connecting plate, a pulley is provided on the connecting plate, a pulley rope is carried on the pulley, one end of the pulley rope is connected to the weight, and the other end passes through the pulley and is connected to the bracket;

[0015] The cylinder lifting mechanism includes a lifting cylinder and a connecting plate connected to its piston rod. The lifting cylinder is arranged on the connecting plate, and the connecting plate is connected to the top of the bracket. The pulley lifting mechanism and the cylinder lifting mechanism work together to realize the up and down movement of the bracket.

[0016] Preferably, the bag tying mechanism includes a bag tying support frame, a connecting plate is provided on the bag tying support frame, a tying mechanism, a rotating mechanism, and a lifting mechanism are provided on the connecting plate, the tying mechanism includes a bag tying cylinder and a servo drive provided at the end of its piston rod, and the servo drive is connected to a tying machine;

[0017] The rotating mechanism includes a rotating motor and a bag twisting mechanism provided on the output shaft of the motor, the bag twisting mechanism includes a base plate and two sets of bag twisting arms, and the bag twisting arms can slide back and forth on the base plate;

[0018] The lifting mechanism includes a cylinder lifting mechanism and a pulley lifting mechanism, the cylinder lifting mechanism includes a lifting cylinder and a bag-supporting mechanism connected to the end of the lifting cylinder piston rod, the bag-supporting mechanism includes a bag-supporting bracket and a bag-supporting arm, and the bag-supporting arm is equipped with a bag-supporting cylinder;

[0019] The pulley lifting mechanism includes a lifting bracket connected to the bag tying support frame, a pulley is provided at the upper end of the lifting bracket, and a closing mechanism is provided at the lower end. A pulley rope is carried on the pulley, one end of the pulley rope is connected to a weight, and the other end passes around the pulley and is connected to the bag supporting mechanism.

[0020] The closing mechanism includes a sliding frame and a closing arm. The sliding frame is arranged on the lifting bracket. The closing arm is arranged on the outside of the bag-supporting mechanism, and one end is connected to the sliding frame and the other end extends toward the bag opening of the packaging bag. The closing arm is also equipped with a closing cylinder.

[0021] Preferably, the bag-pushing mechanism includes a support frame, on which a group of connecting brackets are provided, and on which a bag-supporting cylinder, a bag-pushing cylinder, and a rotating motor are provided.

[0022] The lower end of the piston rod of the bag-supporting cylinder is connected to a bag-supporting bracket, the bag-supporting bracket is provided with a telescopic arm, the telescopic arm is connected to a bag-supporting arm, and a telescopic cylinder is provided between the telescopic arm and the bag-supporting bracket;

[0023] The lower end of the piston rod of the bag-pushing cylinder is connected to a bag-pushing device, which includes a base, a bag-pushing arm and a bag-pushing frame. One end of the bag-pushing arm is connected to the base, and the other end is connected to the bag-pushing frame. One end of the bag-pushing frame is connected to the end of the bag-pushing arm, and the other end extends toward the bag opening.

[0024] The end of the output shaft of the rotary motor is connected to a bag twisting mechanism, which includes a base plate and two sets of bag twisting arms, and the bag twisting arms can slide back and forth on the base plate;

[0025] The telescopic arms, telescopic cylinders, and bag-supporting arms are provided in two sets, symmetrically arranged on both sides of the bag-supporting bracket; and the width of the bag-supporting frame is smaller than the distance between the two sets of bag-supporting arms;

[0026] Preferably, the transport trolley includes a main frame, on which three sets of swing arm devices are arranged in sequence from front to back, and the swing arm devices include a limit bracket, a bag holding gripper, a swing arm bracket, and a bag holding swing arm.

[0027] On the main frame, opposite to the swing arm device, a clamping cylinder, a lifting cylinder, and a closing device are sequentially provided through a connecting bracket. A swing arm cylinder is further provided above the lifting cylinder. The closing device includes a closing cylinder and a closing member.

[0028] A clamping device is further provided on the main frame and on the rear side of the three sets of swing arm devices, and the clamping device includes a bag opening clamping piece and a clamping cylinder;

[0029] A connecting seat is provided at the bottom of the main frame, a guide shaft is provided on the connecting seat, and a guide wheel group is provided between the guide shaft and the main frame.

[0030] Preferably, the bag-taking mechanism includes a conveying platform, a lifting assembly is arranged above the conveying platform, the lifting assembly includes a lifting platform, a lifting cylinder and a moving roller assembly are arranged on the lifting platform, the lower end of the lifting cylinder is connected to the bag suction mechanism, the moving roller assembly is further connected to a rotating arm through a connecting rod, and the rotating arm is connected to a driving cylinder;

[0031] A guide shaft is also provided on the lifting platform, and the guide shaft is connected to the lifting platform through a guide shaft support. The roller of the moving roller assembly can move along the guide shaft under the drive of the driving cylinder.

[0032] Preferably, the folding and sewing mechanism includes a transition folding device, a sewing machine, and a labeling machine to complete the sealing and labeling of the packaging bag.

[0033] Compared with the existing technology, the beneficial effects of the present invention are: the present invention realizes automatic bagging, tying, folding and sewing of inner and outer separate packaging bags by setting a bag loading mechanism, a bag smoothing mechanism, a bag tying mechanism and a bag pushing mechanism, thereby realizing the automation of the process of inner and outer separate packaging bags; it can realize full automation and automatic fault handling, improve working conditions, avoid personal accidents, improve production efficiency and reduce production costs; the whole process is safe, reliable, fast and efficient, and can be widely promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an overall schematic diagram of the present invention;

[0035] Figure 2 This is an assembly diagram of the various parts of the present invention;

[0036] Figure 3 Schematic diagram of the bag loading mechanism and hopper of the present invention;

[0037] Figure 4 Schematic diagram of the bag-rolling mechanism of the present invention;

[0038] Figure 5 Schematic diagram of the cable tie mechanism;

[0039] Figure 6 Schematic diagram of the cable tie mechanism from another angle;

[0040] Figure 7 Schematic diagram of the bag twisting mechanism;

[0041] Figure 8 Schematic diagram of the bag-stirring mechanism;

[0042] Figure 9 A partial enlarged view of the bag-stifling device;

[0043] Figure 10 Schematic diagram of the telescopic arm and bag-supporting arm structure;

[0044] Figure 11 Schematic diagram of the transport trolley;

[0045] Figure 12 Schematic diagram of the bag-taking mechanism.

[0046] The following are marked in the figure: 1. Bag storage unit; 11. Distribution box; 12. Bag storage rack; 2. Main unit; 21. Main upper rack; 22. Auxiliary upper rack; 23. Chassis; 3. Bag loading mechanism; 30. Hopper mechanism; 4. Bag straightening mechanism; 5. Bag tying mechanism.

[0047] 6. Bag-stuck mechanism; 7. Carrying trolley; 8. Bag-taking mechanism; 9. Edge-folding and bag-sewing mechanism; 31. Connecting bracket;

[0048] 32. Connecting plate; 33. Swing assembly; 34. Swing arm cylinder; 35. Bag-supporting swing arm; 301. Support; 302. Clamping bag-supporting mechanism; 303. Bag-supporting cylinder; 304. Connecting arm; 41. Bracket; 42. Lifting assembly; 43. Tension adjustment assembly;

[0049] 44. Elastic bag-straightening mechanism; 45. Telescopic connection mechanism; 46. Exhaust pipe; 47. Bag-supporting assembly plate;

[0050] 421, pulley lifting mechanism; 422, cylinder lifting mechanism; 211, connecting plate; 212, pulley; 213, pulley rope;

[0051] 214, heavy object; 221, lifting cylinder; 222, connecting plate; 431, connecting plate; 432, telescopic mechanism; 321, telescopic cylinder; 322, connecting block; 441, frame; 442, spring pressure plate; 51, bag tying support frame; 52, connecting plate; 53, tying mechanism; 54, rotating mechanism; 55, lifting mechanism; 531, bag tying cylinder; 532, servo drive; 533, tying machine;

[0052] 5331, housing; 5332, reel; 5333, workbench; 5334, groove; 541, rotating motor; 542, bag twisting mechanism; 5421, base plate; 5422, bag twisting arm; 551, cylinder lifting mechanism; 552, pulley lifting mechanism; 511, lifting cylinder; 512, bag supporting mechanism; 513, bag supporting bracket; 514, bag supporting arm; 521, lifting bracket; 522, pulley;

[0053] 523, closing mechanism; 524, pulley rope; 525, weight; 5231, sliding frame; 5232, closing arm;

[0054] 61. Bag-supporting frame; 62. Connecting bracket; 63. Bag-supporting cylinder; 64. Bag-supporting cylinder; 65. Rotating motor;

[0055] 66. Bag-supporting bracket; 67. Telescopic arm; 68. Bag-supporting arm; 69. Telescopic cylinder; 610. Bag-supporting device; 611. Base; 612. Bag-supporting arm; 613. Bag-supporting frame; 614. Bag-twisting mechanism; 615. Base plate; 616. Bag-twisting arm; 703. Bag-holding gripper; 704. Swing arm bracket; 705. Bag-supporting swing arm; 706. Clamping cylinder; 707. Lifting cylinder; 708. Closing device;

[0056] 709, swing arm cylinder; 710, closing cylinder; 711, closing piece; 712, clamping device; 713, bag opening clamping piece;

[0057] 714, clamping cylinder; 715, connecting seat; 716, guide shaft; 717, guide pulley assembly;

[0058] 81. Conveying platform; 801. Lifting assembly; 802. Lifting platform; 803. Lifting cylinder; 804. Moving roller assembly;

[0059] 805, bag suction mechanism; 806, connecting rod; 807, rotating arm; 808, driving cylinder; 809, guide shaft;

[0060] 810. Guide shaft support; 91. Folding device; 92. Sewing machine; 93. Labeling machine. DETAILED DESCRIPTION

[0061] The present invention will be further described below with reference to the accompanying drawings:

[0062] Example 1

[0063] like Figures 1 to 12 As shown,

[0064] 01. A packaging machine adapted for packaging bags with separated inner and outer packaging, comprising a bag storage unit 1 and a host unit 2. The bag storage unit 1 comprises a distribution box 11, a bag storage rack 12, and a bag taking mechanism 8. The host unit 2 comprises a main upper rack 21, an auxiliary upper rack 22, and a chassis 23.

[0065] The bag taking mechanism 13 is arranged on one side of the main upper frame 21 and is perpendicular to the main upper frame 21. The distribution box 11 is arranged on the right side of the bag taking mechanism 8, and the bag storage rack 12 is arranged on the left side of the bag taking mechanism 8. The auxiliary upper frame 22 is arranged on the left side of the main upper frame 21 and is parallel to the main upper frame 21. The chassis 23 is arranged below the main upper frame 21 and the auxiliary upper frame 22, and passes through the main upper frame 21 and the auxiliary upper frame 22 from front to back.

[0066] A transport trolley 7 is also provided on the chassis 23. Above the transport trolley 7 and on the main upper frame 21, a hopper mechanism 30, a bag-smoothing mechanism 4, a bag-tying mechanism 5, and a bag-stuck mechanism 6 are sequentially provided from front to back. A bag-loading mechanism 3 is also provided on one side of the hopper mechanism 30 and above the bag-retrieving mechanism 8. A folding and sewing mechanism 9 is also provided above the transport trolley 7 and on the auxiliary upper frame 22.

[0067] The bag-taking mechanism 8 transports the packaging bags in the bag storage rack 12 to the bag-loading mechanism 3, and the bag-loading mechanism 3 sends the packaging bags to the hopper mechanism 30 for loading. The loaded packaging bags are transported downward by the transport trolley 7 through the bag-smoothing mechanism 4, the bag-tying mechanism 5, and the bag-pushing mechanism 6 in sequence, and then transported by the chassis 23 to the folding and sewing mechanism 9 to complete the loading and packaging.

[0068] 02. The bag loading mechanism 3 includes a connecting bracket 31, one side of the connecting bracket 31 is connected to the bag storage rack 12 through a connecting plate 32, and the other side is connected to a swing assembly 33, and the swing assembly 33 is connected to a bag-supporting swing arm 35 through a swing arm cylinder 34; the hopper mechanism 30 is arranged above the bag-supporting swing arm 35, and a support 301 is provided on the upper part of the hopper mechanism 30, and a clamping bag-supporting mechanism 302 is provided on the lower part, and a bag-supporting cylinder 303 is provided on the support 301, and the piston rod of the bag-supporting cylinder 303 is connected to the clamping bag-supporting mechanism 302 through a connecting arm 304.

[0069] 03. The bag-adjusting mechanism 4 includes a bracket 41, a lifting assembly 42 is provided above the bracket 41, and an elastic bag-adjusting mechanism 44 is connected to the bracket 41 via a tension adjustment assembly 43. A telescopic connection mechanism 45 is also provided inside the bracket 41. An exhaust pipe 46 is provided above the telescopic connection mechanism 45 and at the top of the bracket 41, and a bag-supporting assembly plate 47 is provided below.

[0070] The elastic bag-stretching mechanism 44 includes a frame 441 , and spring pressure plates 442 are provided on both side frames of the frame 441 . The spring pressure plates 442 pass through the tension adjustment component 43 and the frame 441 and extend toward the center of the frame 441 .

[0071] The spring pressure plate 442 is symmetrically arranged on the front and rear frames of the frame 441. The spring pressure plate 442 extends inward and acts on the front and rear outer walls of the bag opening; the bag-supporting combination plate 47 extends into the bag opening, expands outward, and acts on the front and rear inner walls of the bag opening; the spring pressure plate 442 and the bag-supporting combination plate 47 jointly open the bag opening.

[0072] The tension adjustment assembly 43 includes a connecting plate 431 and a telescopic mechanism 432. The upper end of the connecting plate 431 is connected to the bracket 41, and the lower end is connected to the side frame of the elastic bag-smoothing mechanism 44 frame 441; the telescopic mechanism 432 includes a telescopic cylinder 321 and a connecting block 322 connected to its piston rod. The telescopic cylinder 321 is arranged on the bracket 41, and the connecting block 322 is connected to the upper part of the elastic bag-smoothing mechanism 44 frame 441.

[0073] The lifting assembly 42 includes a pulley lifting mechanism 421 and a cylinder lifting mechanism 422. The pulley lifting mechanism 421 includes a connecting plate 211. A pulley 212 is provided on the connecting plate 211. The pulley 212 is equipped with a pulley rope 213. One end of the pulley rope 213 is connected to a weight 214, and the other end passes around the pulley 212 and is connected to the bracket 41; the cylinder lifting mechanism 422 includes a lifting cylinder 221 and a connecting plate 222 connected to its piston rod. The lifting cylinder 221 is set on the connecting plate 211, and the connecting plate 222 is connected to the top of the bracket 41. The pulley lifting mechanism 421 and the cylinder lifting mechanism 422 work together to realize the smooth up and down movement of the bracket 41, avoiding excessive force when the cylinder lifting mechanism 422 is started and stopped instantly, thereby damaging the packaging bag.

[0074] 04. The bag tying mechanism 5 includes a bag tying support frame 51, a connecting plate 52 is provided on the bag tying support frame 51, and a tying mechanism 53, a rotating mechanism 54, and a lifting mechanism 55 are provided on the connecting plate 52.

[0075] The strapping mechanism 53 includes a bag-binding cylinder 531 and a servo drive 532 provided at the end of its piston rod, and the servo drive 532 is connected to a strapping machine 533;

[0076] The rotating mechanism 54 includes a rotating motor 541 and a bag twisting mechanism 542 disposed on the motor output shaft. The bag twisting mechanism 542 includes a base plate 5421 and two sets of bag twisting arms 5422. The bag twisting arms 5422 can slide back and forth on the base plate 5421.

[0077] The lifting mechanism 55 includes a cylinder lifting mechanism 551 and a pulley lifting mechanism 552. The cylinder lifting mechanism 551 includes a lifting cylinder 511 and a bag-supporting mechanism 512 connected to the end of the piston rod of the lifting cylinder 511. The bag-supporting mechanism 512 includes a bag-supporting bracket 513 and a bag-supporting arm 514. The bag-supporting arm 514 is equipped with a bag-supporting cylinder.

[0078] The pulley lifting mechanism 552 includes a lifting bracket 521 connected to the bag tying support frame 51, a pulley 522 is set at the upper end of the lifting bracket 521, and a closing mechanism 523 is set at the lower end. The pulley 522 is equipped with a pulley rope 524, one end of the pulley rope 524 is connected to a weight 525, and the other end passes around the pulley 522 and is connected to the bag supporting mechanism 512.

[0079] The closing mechanism 523 includes a sliding frame 5231 and a closing arm 5232. The sliding frame 5231 is arranged on the lifting bracket 521, and the closing arm 5232 is arranged on the outside of the bag supporting mechanism 512, with one end connected to the sliding frame 5231 and the other end extending toward the bag opening of the packaging bag. The closing arm 5232 is also equipped with a closing cylinder.

[0080] 05. The bag-pushing mechanism 6 includes a bag-pushing support frame 61, on which a set of connecting brackets 62 are provided. The connecting brackets 62 are provided with a bag-pushing cylinder 63, a bag-pushing cylinder 64, and a rotating motor 65.

[0081] The lower end of the piston rod of the bag-supporting cylinder 63 is connected to a bag-supporting bracket 66, and a telescopic arm 67 is provided on the bag-supporting bracket 66. The telescopic arm 67 is connected to a bag-supporting arm 68, and a telescopic cylinder 69 is provided between the telescopic arm 67 and the bag-supporting bracket 66.

[0082] The lower end of the piston rod of the bag-pushing cylinder 64 is connected to a bag-pushing device 610, and the bag-pushing device 610 includes a base 611, a bag-pushing arm 612 and a bag-pushing frame 613. One end of the bag-pushing arm 612 is connected to the base 611, and the other end is connected to the bag-pushing frame 613; one end of the bag-pushing frame 613 is connected to the end of the bag-pushing arm 612, and the other end extends toward the bag opening.

[0083] The end of the output shaft of the rotary motor 65 is connected to a bag twisting mechanism 614, which includes a base plate 615 and two sets of bag twisting arms 616. The bag twisting arms 616 can slide back and forth on the base plate 615.

[0084] The telescopic arms 67 , telescopic cylinders 69 , and bag-supporting arms 68 are provided in two sets and are symmetrically arranged on both sides of the bag-supporting bracket 66 .

[0085] The width of the bag-supporting frame 613 is smaller than the distance between the two sets of bag-supporting arms 68 .

[0086] 06. The transport trolley 7 includes a main frame 701. On the main frame 701, three sets of swing arm devices are arranged in sequence from front to back. The swing arm devices include a limit bracket 702, a bag holding gripper 703, a swing arm bracket 704, and a bag holding swing arm 705.

[0087] On the main frame 701, opposite the swing arm device, a clamping cylinder 706, a lifting cylinder 707, and a closing device 708 are sequentially provided through a connecting bracket. A swing arm cylinder 709 is further provided above the lifting cylinder 707. The closing device 708 includes a closing cylinder 710 and a closing member 711.

[0088] On the main frame 701, behind the three sets of swing arm devices, there is also a clamping device 712, which includes a bag clamping member 713 and a clamping cylinder 714;

[0089] A connecting seat 715 is provided at the bottom of the main frame 701 , a guide shaft 716 is provided on the connecting seat 715 , and a guide wheel set 717 is provided between the guide shaft 716 and the main frame 701 .

[0090] 07. The bag-taking mechanism 8 includes a conveying platform 81. A lifting assembly 801 is provided above the conveying platform 81. The lifting assembly 801 includes a lifting platform 802. A lifting cylinder 803 and a moving roller assembly 804 are provided on the lifting platform 802. The lower end of the lifting cylinder 803 is connected to a bag suction mechanism 805. The moving roller assembly 804 is further connected to a rotating arm 807 via a connecting rod 806. The rotating arm 807 is connected to a driving cylinder 808.

[0091] A guide shaft 809 is also provided on the lifting platform 802 , and the guide shaft 809 is connected to the lifting platform 802 via a guide shaft support 810 . The roller of the movable roller assembly 804 can move along the guide shaft 809 when driven by the driving cylinder 808 .

[0092] 08. The folding and sewing mechanism 9 includes a transition folding device 91, a sewing machine 92, and a labeling machine 93 to complete the sealing and labeling of the packaging bag.

[0093] The working principle and working process of the present invention are as follows:

[0094] like Figure 12 The bag taking mechanism 8 shown in the figure, after the bag is sucked by the bag sucking mechanism 805, another cylinder at the same position of the driving cylinder 808 drives the bag sucking mechanism 805 to be lifted to the specified position, and then the rotating arm 807, under the action of the driving cylinder 808, moves the bag sucking mechanism 805 and the moving roller assembly 804 and other parts to the left along the guide shaft 809 through the connecting rod 806, thereby completing the functions of sucking and delivering the bag.

[0095] like Figure 3 In the bag loading mechanism 3 shown, after the bag holding arm 35 puts the packaging bag 307 delivered by the bag taking mechanism 8 on the clamping bag holding mechanism 302, the bag holding cylinder 303 drives the connecting arm 304 to hold the packaging bag 307 tightly; the bag holding arm 35 continues to swing upward to leave the packaging bag 307, completing the bag loading process, and the hopper mechanism 30 drops the material into the packaging bag 307. After the dropping is completed, the carrying trolley 7 moves the packaging bag to the bag straightening station.

[0096] like Figure 4The working principle of the bag-smoothing mechanism 4 shown is: first manually adjust the spring pressure plate 442 to extend into the frame 441, and then adjust the size of the bag opening restricted by the elastic bag-smoothing mechanism 44 by adjusting the size of the gap between the end of the spring pressure plate 442 and the frame 441; or according to different bag opening sizes, adjust the width of the frame 441 through the tension adjustment component 43, and then adjust the size of the gap between the end of the spring pressure plate 442 and the frame 441 to adapt to the bag opening specifications; after adjustment, it is convenient for the end of the spring pressure plate 442 to clamp the outer wall of the inner bag.

[0097] After the space adjustment of the frame 441 is completed, the lifting cylinder 221 is extended downward, the weight 214 is moved upward, and the frame 441 is pushed downward, pushing the outer bag of the packaging bag downward by a certain distance;

[0098] The telescopic connection mechanism 45 extends downward, pushing the bag-supporting assembly plate 47 into the inner bag opening. The telescopic connection mechanism 45 expands outward, driving the bag-supporting assembly plate 47 to act on the front and rear inner walls of the inner bag opening. The spring pressure plate 442 and the bag-supporting assembly plate 47 jointly open the inner bag opening.

[0099] The lifting cylinder 221 retracts upward, driving the bracket 41 upward via the connecting plate 222. This in turn drives the tension adjustment assembly 43, the telescopic connection mechanism 45, the bag-stretching assembly plate 47, and the frame 441 to move upward simultaneously. The spring pressure plate 442 and the bag-stretching assembly plate 47 jointly open the inner bag opening. During this upward movement, the spring pressure plate 442 and the bag-stretching assembly plate 47 work together to straighten the inner bag opening upward. In other words, the bag-smoothing assembly moves upward as a whole, smoothing the wrinkled inner bag opening and arranging it for tying in the next step. After the frame 441 moves upward, the outer bag of the packaging bag naturally stretches upward, facilitating its opening in the next step.

[0100] When the spring pressure plate 442 and the bag-opening assembly plate 47 jointly open the inner bag opening, the inner bag opening is completely closed, and the air remaining in the inner bag material is discharged through the exhaust pipe 46, preventing the air from squeezing the inner bag and causing the inner bag to bulge and crack during the bag-rolling process.

[0101] like Figure 5 、 Figure 6 、 Figure 7 The working principle of the tie-tying mechanism 5 shown is as follows: the packaging bag is moved from the previous process to the bottom of the bag-twisting mechanism 542, that is, the carrying trolley 7 moves the packaging bag from the bag-rolling station to the tie-tying station, and the bag-twisting cylinder drives the two sets of bag-twisting arms 542, so that the bag-twisting arms 5422 slide forward and backward along the base plate 5421 and open, and the packaging bag moves into the opened space, and the closing cylinder controls the closing arms 5232 to buckle, thereby shrinking the inner bag opening;

[0102] Subsequently, driven by the bag-stretching cylinder, the bag-stretching arm 514 extends between the outer and inner bags of the packaging bag, stretching the outer bag open. Because the piston rod end of the lifting cylinder 511 is connected to the bag-stretching mechanism 512, and one end of the pulley rope 524 is connected to the weight 525, and the other end passes through the pulley 522 and connects to the bag-stretching mechanism 512, the lifting cylinder 511 extends downward, and the weight 525 moves upward, jointly controlling the bag-stretching arm 514 to smoothly push the outer bag downward, separating the inner and outer bags. The lifting cylinder 511 and the weight 525 work together to prevent excessive force from damaging the packaging bag when the lifting cylinder 511 starts and stops instantly.

[0103] Subsequently, the bag twisting arm 5422 closes and clamps the inner bag of the packaging bag. The rotating motor 541 rotates, driving the bag twisting arm 5422 to control the rotation of the inner bag. During the rotation, the bag twisting arm 5422 resets, and the inner bag is gradually tightened and thinner. The bag tying cylinder 531 pushes the tie machine 533 downward to the bag tying station. The servo drive 532 controls the tie machine 533. The tie machine spits out the bag tying line, tightens the inner bag opening, and shortens the bag tying line. The tie mechanism 53 moves upward step by step and resets after completing multiple bag tying operations.

[0104] Subsequently, the lifting mechanism 55 is reset, and the lifting cylinder 511 and the weight 525 work together to drive the bag-supporting mechanism 512 to reset, lift the outer bag upward to its original position, and move to the next process with the inner bag opening tied tightly and the outer bag opening opened.

[0105] A servo drive 532 is provided on the cable tie machine 533. The cable tie machine 533 includes a shell 5331, a wire pulley 5332, and a workbench 5333. The workbench 5333 is arranged above the shell 5331, and one end thereof extends out of the shell 5331. The wire pulley 5332 is arranged on the shell 5331 and the other end of the workbench 5333. A groove 5334 is provided at the protruding end of the workbench 5333. The cable tie line on the wire pulley 5332 bypasses the servo drive 532 and passes downward from the groove 5334. The servo drive 532 controls the cable tie line to spit out, tighten the inner bag opening, and cut the bag line.

[0106] like Figure 8 、 Figure 9 、 Figure 10 The working principle of the bag-stuck mechanism 6 is as follows: after the previous process, i.e., the tying process, the inner bag opening of the packaging bag is tightened with the tying wire, the carrying trolley 7 transports the packaging bag to the bag-stuck station. First, two sets of bag-holding arms 68 extend between the inner bag opening and the outer bag opening of the packaging bag to open the outer bag opening outward; the bag-holding cylinder 63 then extends downward and pushes the outer bag downward through the telescopic arms 67 and the bag-holding arms 68 to prevent the bag-twisting mechanism 614 from bending the inner bag opening;

[0107] The bag twisting arm 616 slides relatively along the base plate 615, clamps the inner bag opening of the tightened tie wire, and the rotary motor 65 rotates to drive the bag twisting arm 616 to bend the inner bag opening;

[0108] The bag-pushing cylinder 64 pushes the bag-pushing arm 612 and the bag-pushing frame 613 to push the bent inner bag opening downward into the outer bag opening;

[0109] The bag-supporting cylinder 63 contracts upwards, lifting the outer bag opening upwards, so that the inner bag opening is completely placed in the outer bag opening, making it convenient for the next step of sewing the outer bag opening.

[0110] The folding and sewing mechanism 9 includes a transition folding device 91, a sewing machine 92, and a labeling machine 93, which completes the sealing and labeling of the packaging bag after the bag is packed.

[0111] Figure 11 The transport trolley 7 shown in the figure, under the action of the swing arm cylinder 709, the bag-holding swing arm 705 holds the outer bag of the packaging bag 307 tightly, and the closing piece 711 tightens the inner bag. Then, the main frame 701 is driven by an external motor, and the guide wheel group 717 moves backward along the guide shaft 716 to enter the next work station.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other manner. Any person skilled in the art may utilize the above-disclosed technical content to modify or modify the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A packaging machine adapted to the separation of the inner and outer parts of the packaging bag, comprising a bag storage unit and a host unit, characterized in that: The bag storage unit includes a distribution box, a bag storage rack and a bag taking mechanism, and the host unit includes a main upper rack, an auxiliary upper rack and a chassis. The bag taking mechanism is arranged on one side of the main upper frame and is perpendicular to the main upper frame, the distribution box is arranged on the right side of the bag taking mechanism, and the bag storage rack is arranged on the left side of the bag taking mechanism; The auxiliary upper frame is arranged on the left side of the main upper frame and is parallel to the main upper frame; the chassis is arranged below the main upper frame and the auxiliary upper frame and passes through the main upper frame and the auxiliary upper frame in sequence from front to back; A transport trolley is also provided on the chassis. A hopper mechanism, a bag smoothing mechanism, a bag tying mechanism, and a bag pressing mechanism are arranged in sequence from front to back above the transport trolley and on the main upper frame. A bag loading mechanism is also provided on one side of the hopper mechanism and above the bag taking mechanism. A folding and sewing bag mechanism is also provided above the transport trolley and on the auxiliary upper frame. The bag taking mechanism transports the packaging bags in the bag storage rack to the bag loading mechanism, and the bag loading mechanism sends the packaging bags to the hopper mechanism for loading. The loaded packaging bags are transported downward by the transport trolley in sequence through the bag smoothing mechanism, the bag tying mechanism, and the bag pressing mechanism, and then transported by the chassis to the folding and sewing mechanism to complete the loading and packaging; The bag loading mechanism comprises a connecting bracket, one side of the connecting bracket is connected to the bag storage rack through a connecting plate, and the other side is connected to a swing assembly, and the swing assembly is connected to a bag-supporting swing arm through a swing arm cylinder; the hopper mechanism is arranged above the bag-supporting swing arm, a support is arranged on the upper part of the hopper mechanism, and a clamping bag-supporting mechanism is arranged on the lower part, a bag-supporting cylinder is arranged on the support, and a piston rod of the bag-supporting cylinder is connected to the clamping bag-supporting mechanism through a connecting arm; The bag-smoothing mechanism comprises a bag-smoothing bracket, a lifting assembly is provided above the bracket, an elastic bag-smoothing mechanism is connected below the bracket via a tension adjustment assembly, a telescopic connection mechanism is also provided inside the bracket, an exhaust pipe is provided above the telescopic connection mechanism and at the top of the bracket, and a bag-supporting assembly plate is provided below the bracket; The elastic bag-stretching mechanism comprises a frame, and spring pressure plates are arranged on the two side frames of the frame, and the spring pressure plates pass through the tension adjustment assembly and the frame frame and extend toward the center of the frame; The spring pressure plate is symmetrically arranged on the front and rear frames of the frame, and the spring pressure plate extends inwardly to act on the front and rear outer walls of the bag opening; The bag support assembly plate extends into the bag opening, expands outward, and acts on the front and rear inner walls of the bag opening; the spring pressure plate and the bag support assembly plate jointly support the bag opening; The tension adjustment assembly includes a connecting plate and a telescopic mechanism, wherein the upper end of the connecting plate is connected to the bracket, and the lower end is connected to the side frame of the elastic bag-smoothing mechanism frame; the telescopic mechanism includes a telescopic cylinder and a connecting block connected to its piston rod, the telescopic cylinder is arranged on the bracket, and the connecting block is connected to the upper part of the elastic bag-smoothing mechanism frame; The lifting assembly includes a pulley lifting mechanism and a cylinder lifting mechanism, wherein the pulley lifting mechanism includes a connecting plate, a pulley is provided on the connecting plate, a pulley rope is carried on the pulley, one end of the pulley rope is connected to a weight, and the other end passes over the pulley and is connected to the bracket; The cylinder lifting mechanism includes a lifting cylinder and a connecting plate connected to its piston rod, the lifting cylinder is arranged on the connecting plate, the connecting plate is connected to the top of the bracket, and the pulley lifting mechanism and the cylinder lifting mechanism work together to realize the up and down movement of the bracket.

2. The packaging machine adapted to the inner and outer separation of packaging bags according to claim 1 is characterized in that: The bag tying mechanism comprises a bag tying support frame, a connecting plate is provided on the bag tying support frame, a tying mechanism, a rotating mechanism and a lifting mechanism are provided on the connecting plate, the tying mechanism comprises a bag tying cylinder and a servo drive provided at the end of its piston rod, and the servo drive is connected to a tying machine; The rotating mechanism includes a rotating motor and a bag twisting mechanism arranged on the output shaft of the motor, the bag twisting mechanism includes a base plate and two groups of bag twisting arms, and the bag twisting arms can slide back and forth on the base plate; The lifting mechanism includes a cylinder lifting mechanism and a pulley lifting mechanism, the cylinder lifting mechanism includes a lifting cylinder and a bag-supporting mechanism connected to the end of the piston rod of the lifting cylinder, the bag-supporting mechanism includes a bag-supporting bracket and a bag-supporting arm, and the bag-supporting arm is equipped with a bag-supporting cylinder; The pulley lifting mechanism comprises a lifting bracket connected to the bag tying support frame, a pulley is arranged at the upper end of the lifting bracket, and a closing mechanism is arranged at the lower end, a pulley rope is carried on the pulley, one end of the pulley rope is connected to a weight, and the other end passes around the pulley and is connected to the bag supporting mechanism; The closing mechanism includes a sliding frame and a closing arm. The sliding frame is arranged on the lifting bracket. The closing arm is arranged outside the bag supporting mechanism, and one end is connected to the sliding frame and the other end extends toward the bag opening of the packaging bag. The closing arm is also equipped with a closing cylinder.

3. The packaging machine adapted to the inner and outer separation of packaging bags according to claim 2 is characterized in that: The bag-pushing mechanism comprises a support frame, on which a group of connecting brackets are arranged, on which a bag-pushing cylinder, a bag-pushing cylinder, and a rotating motor are arranged, the lower end of the piston rod of the bag-pushing cylinder is connected to the bag-pushing bracket, on which a telescopic arm is arranged, which is connected to the bag-pushing arm, and between which a telescopic cylinder is arranged; The lower end of the piston rod of the bag-pushing cylinder is connected to a bag-pushing device, which includes a base, a bag-pushing arm and a bag-pushing frame. One end of the bag-pushing arm is connected to the base, and the other end is connected to the bag-pushing frame. One end of the bag-pushing frame is connected to the end of the bag-pushing arm, and the other end extends to the bag opening. The end of the output shaft of the rotary motor is connected to a bag twisting mechanism, which includes a base plate and two sets of bag twisting arms, and the bag twisting arms can slide back and forth on the base plate; The telescopic arms, telescopic cylinders and bag-supporting arms are in two sets, symmetrically arranged on both sides of the bag-supporting bracket; and the width of the bag-supporting frame is smaller than the distance between the two sets of bag-supporting arms.

4. The packaging machine adapted to the inner and outer separation of packaging bags according to claim 3 is characterized in that: The transport trolley comprises a main frame, on which three groups of swing arm devices are arranged in sequence from front to back, the swing arm devices comprising a limit bracket, a bag holding gripper, a swing arm bracket, and a bag supporting swing arm, on the main frame, opposite to the swing arm device, a clamping cylinder, a lifting cylinder, and a closing device are arranged in sequence through a connecting bracket, a swing arm cylinder is also arranged above the lifting cylinder, and the closing device comprises a closing cylinder and a closing member; A clamping device is also provided on the main frame and at the rear side of the three sets of swing arm devices, and the clamping device includes a bag opening clamping piece and a clamping cylinder; A connecting seat is provided at the bottom of the main frame, a guide shaft is provided on the connecting seat, and a guide wheel group is provided between the guide shaft and the main frame.

5. The packaging machine adapted to the inner and outer separation of packaging bags according to claim 4, characterized in that: The bag taking mechanism includes a conveying platform, a lifting assembly is arranged above the conveying platform, the lifting assembly includes a lifting platform, a lifting cylinder and a moving roller assembly are arranged on the lifting platform, a bag suction mechanism is connected to the lower end of the lifting cylinder, the moving roller assembly is also connected to a rotating arm through a connecting rod, and a driving cylinder is connected to the rotating arm; A guide shaft is also provided on the lifting platform, and the guide shaft is connected to the lifting platform through a guide shaft support. The roller of the moving roller assembly can move along the guide shaft under the drive of the driving cylinder.

6. The packaging machine adapted to the inner and outer separation of packaging bags according to claim 5, characterized in that: The folding and sewing bag mechanism comprises a transition folding device, a sewing machine and a labeling machine, and completes the sealing and labeling of the packaging bag.

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