A bag-straightening assembly for a packaging machine with separated inner and outer packaging bags

Abstract

The present invention discloses a bag-smoothing assembly for a packaging machine with separated inner and outer packaging bags, comprising a bracket, a lifting assembly is arranged above the bracket, an elastic bag-smoothing mechanism is connected to the bracket below through a tension adjustment assembly, a telescopic connection mechanism is also arranged inside the bracket, an exhaust pipe is arranged above the telescopic connection mechanism and at the top of the bracket, a bag-supporting assembly plate is arranged below, and the bag-supporting assembly plate and the elastic bag-smoothing mechanism jointly open the bag opening. The beneficial effects of the present invention are: the elastic bag-smoothing mechanism can adjust the action range of the frame, which is convenient for applying packaging bags of different models; the spring pressure plate and the bag-supporting assembly plate can jointly open the inner bag opening, and can jointly straighten the inner bag opening upward; the lifting assembly includes a pulley lifting mechanism and a cylinder lifting mechanism, which realizes the stable up and down movement of the bracket, and avoids excessive force when the cylinder lifting mechanism is instantly started and stopped, thereby damaging the packaging bag.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic packaging of packaging bags, and in particular relates to a bag-smoothing component of a packaging machine adapted to separate inner and outer packaging bags. Background Art

[0002] In recent years, the feed, food and other industries have experienced unprecedented rapid growth. However, with the continuous increase in the costs of raw materials, logistics, marketing, labor, etc., the increasing requirements for energy conservation and environmental protection at home and abroad, and the accelerated process of industrial groupization, scale and internationalization, feed, food and other industry companies are facing the challenges of cost control and product upgrading.

[0003] In modern industry, automation in the production process has become a prominent theme, and the automation level of all walks of life is getting higher and higher. However, in the packaging process of bagged raw materials, especially some bulk feeds and foods that need to be packed with inner and outer bags at the same time, most production lines cannot solve the problem of separate inner and outer packaging. After the materials are put into the inner bag, the inner bag mouth needs to be manually smoothed, and then the inner bag is manually tied, and then the outer bag is sewn with the outer bag folding and sewing equipment. The labor intensity of workers is high, the rate of work-related accidents is high, and the efficiency is low, which increases the production management costs of feed, food and other industries. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical defects and propose a packaging bag that is convenient for separating the inner and outer bags. After the inner bag is filled with materials, the bag-smoothing component of the packaging machine that is suitable for separating the inner and outer bags of the packaging bag can automatically tidy up the inner bag opening.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a bag-straightening assembly for a packaging machine with separated inner and outer packaging bags, comprising a bracket, a lifting assembly is arranged above the bracket, and an elastic bag-straightening mechanism is connected to the lower part through a tension adjustment assembly; a telescopic connection mechanism is also arranged inside the bracket, an exhaust pipe is arranged above the telescopic connection mechanism and at the top of the bracket, and a bag-supporting composite plate is arranged below;

[0006] The elastic bag-smoothing mechanism includes a frame, and spring pressure plates are provided on the two side frames of the frame. The spring pressure plates are symmetrically arranged on the front and rear frames of the frame. The spring pressure plates pass through the tension adjustment component and the frame frames, extend toward the center of the frame, and act on the front and rear outer walls of the bag opening; the bag-supporting combination 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-supporting combination plate jointly open the bag opening.

[0007] Preferably, the tension adjustment assembly includes a connecting plate and a telescopic mechanism, 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.

[0008] Preferably, 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 around the pulley and is connected to the bracket;

[0009] 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.

[0010] Compared with the prior art, the invention has the following beneficial effects: the elastic bag-smoothing mechanism can adjust the action range of the frame, which is convenient for different types of packaging bags; the spring pressure plate and the bag-supporting combination plate can jointly open the inner bag opening, and can jointly straighten the inner bag opening upward; the lifting assembly includes a pulley lifting mechanism and a cylinder lifting mechanism, which can realize the stable up and down movement of the bracket, and avoid excessive force when the cylinder lifting mechanism is started and stopped instantly, thereby damaging the packaging bag. It can realize the automatic bag-smoothing and sorting of the inner bag of the packaging bag, 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

[0011] Figure 1 It is an overall schematic diagram of the present invention;

[0012] Figure 2 This is an enlarged view of the telescopic connection mechanism;

[0013] Figure 3 This is an enlarged view of the bag support assembly plate;

[0014] Figure 4 It is a schematic diagram of the elastic bag-rolling mechanism;

[0015] Figure 5 This is a schematic diagram of the spring pressure plate.

[0016] The following are marked in the figure: 1. bracket; 2. lifting assembly; 3. tension adjustment assembly; 4. elastic bag smoothing mechanism;

[0017] 5. Telescopic connection mechanism; 6. Exhaust pipe; 7. Bag support assembly plate; 21. Pulley lifting mechanism; 22. Cylinder lifting mechanism; 211. Connecting plate; 212. Pulley; 213. Pulley rope; 214. Weight; 221. Lifting cylinder; 222. Connecting plate;

[0018] 31. Connecting plate; 32. Telescopic mechanism; 321. Telescopic cylinder; 322. Connecting block; 41. Frame; 42. Spring pressure plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Embodiment 1

[0021] like Figures 1 to 5 As shown, a bag-straightening assembly for a packaging machine with separated inner and outer packaging bags comprises a bracket 1, a lifting assembly 2 is arranged above the bracket 1, an elastic bag-straightening mechanism 4 is connected to the bracket 1 through a tension adjusting assembly 3, a telescopic connecting mechanism 5 is arranged inside the bracket 1, an exhaust pipe 6 is arranged above the telescopic connecting mechanism 5 and at the top of the bracket 1, and a bag-stretching assembly plate 7 is arranged below the bracket 1;

[0022] The elastic bag-smoothing mechanism 4 includes a frame 41, and spring pressure plates 42 are provided on the two side frames of the frame 41. The spring pressure plates 42 are symmetrically arranged on the front and rear frames of the frame 41; the spring pressure plates 42 pass through the tension adjustment component 3 and the frames of the frame 41, and extend toward the center of the frame 41 to act on the front and rear outer walls of the bag opening; the bag-supporting combination plate 7 extends into the bag opening, expands outward, and acts on the front and rear inner walls of the bag opening; the spring pressure plate 42 and the bag-supporting combination plate 7 jointly open the bag opening.

[0023] The tension adjustment assembly 3 includes a connecting plate 31 and a telescopic mechanism 32, wherein the upper end of the connecting plate 31 is connected to the bracket 1, and the lower end is connected to the side frame of the frame 41 of the elastic bag-smoothing mechanism 4; the telescopic mechanism 32 includes a telescopic cylinder 321 and a connecting block 322 connected to its piston rod, the telescopic cylinder 321 is arranged on the bracket 1, and the connecting block 322 is connected to the upper part of the frame 41 of the elastic bag-smoothing mechanism 4.

[0024] The lifting assembly 2 includes a pulley lifting mechanism 21 and a cylinder lifting mechanism 22. The pulley lifting mechanism 21 includes a connecting plate 211. A pulley 212 is provided on the connecting plate 211. A pulley rope 213 is carried on the pulley 212. 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 1; the cylinder lifting mechanism 22 includes a lifting cylinder 221 and a connecting plate 222 connected to its piston rod. The lifting cylinder 221 is arranged on the connecting plate 211, and the connecting plate 222 is connected to the top of the bracket 1. The pulley lifting mechanism 21 and the cylinder lifting mechanism 22 work together to achieve a smooth up and down movement of the bracket 1, thereby avoiding excessive force when the cylinder lifting mechanism 22 is started and stopped instantly, thereby damaging the packaging bag.

[0025] The working principle and working process of the present invention are as follows:

[0026] First, manually adjust the spring pressure plate 42 to extend into the frame 41, and then adjust the size of the bag opening restricted by the elastic bag-smoothing mechanism 4 by adjusting the size of the gap between the end of the spring pressure plate 42 and the frame 41; or, according to different bag opening sizes, adjust the width of the frame 41 through the tension adjustment component 3, and then adjust the size of the gap between the end of the spring pressure plate 42 and the frame 41 to adapt to the bag opening specifications; after adjustment, it is convenient for the end of the spring pressure plate 42 to clamp the outer wall of the inner bag.

[0027] After the space adjustment of the frame 41 is completed, the lifting cylinder 221 is first extended downward, and the weight 214 is moved upward, pushing the frame 41 downward, and pushing the outer bag of the packaging bag downward by a certain distance;

[0028] The telescopic connection mechanism 5 extends downward, pushing the bag support assembly plate 7 into the inner bag opening, and the telescopic connection mechanism 5 expands outward, driving the bag support assembly plate 7 to act on the front and rear inner walls of the inner bag opening, and the spring pressure plate 42 and the bag support assembly plate 7 jointly open the inner bag opening;

[0029] The lifting cylinder 221 retracts upward, and drives the bracket 1 to move upward through the connecting plate 222, thereby driving the tension adjustment component 3, the telescopic connection mechanism 5, the bag support assembly plate 7, and the frame 41 to move upward at the same time. The spring pressure plate 42 and the bag support assembly plate 7 jointly open the inner bag opening. During the upward movement, the spring pressure plate 42 and the bag support assembly plate 7 jointly straighten the inner bag opening upward, that is, the bag smoothing component moves upward as a whole, smoothes the wrinkled inner bag opening upward, and tidies up the bag opening, so as to facilitate the next step of bundling the inner bag opening. After the frame 41 moves upward, the outer bag of the packaging bag naturally stretches upward, so as to facilitate the next step of opening the outer bag.

[0030] When the spring pressure plate 42 and the bag-supporting assembly plate 7 jointly open the inner bag opening, the inner bag opening is completely closed, and the air retained in the inner bag material is discharged through the exhaust pipe 6 to prevent the air from squeezing the inner bag and causing the inner bag to bulge and crack during the bag-straightening process.

[0031] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A bag-straightening assembly for a packaging machine adapted for separating the inner and outer parts of a packaging bag, comprising a bracket, characterized in that: A lifting assembly is provided above the bracket, and an elastic bag-straightening mechanism is connected to the lower part through 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 elastic bag-smoothing mechanism includes a frame, spring pressure plates are arranged on the two side frames of the frame, and the spring pressure plates are symmetrically arranged on the front and rear frames of the frame. The spring pressure plates pass through the tension adjustment assembly and the frame frames, extend toward the center of the frame, and act on the front and rear outer walls of the bag opening; the bag-supporting composite 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-supporting composite plate jointly open the bag opening; 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; The tension adjustment component includes a connecting plate and a telescopic mechanism, 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 frame width is adjusted by the tension adjustment component, and then the size of the gap between the end of the spring pressure plate and the frame is adjusted to adapt to the bag opening specifications.

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