Inner bag tying method for packaging machine with separated inner and outer packaging bags

Abstract

The present invention discloses an inner bag tying method suitable for a packaging machine with separated inner and outer packaging bags. The device used in the method includes: a bag tying support frame, a connecting plate is provided on the bag tying support frame, a tying mechanism, a rotating mechanism, a lifting mechanism, and a closing mechanism are provided on the connecting plate. Compared with the prior art, the beneficial effects of the present invention are: the bag-stretching mechanism can realize the opening of the outer bag and the upward and downward pushing, the closing mechanism and the bag-twisting mechanism can realize the automatic closing and tightening of the inner bag, and the tying mechanism can realize the automatic tying of the inner bag opening step by step. The automatic packaging of the inner bag of the separated inner and outer packaging bag is realized, the working conditions are improved, the production efficiency is increased, the production cost is reduced, and the work-related accidents are 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 an inner bag tying method 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 in 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 packaged with inner and outer bags at the same time, most production lines cannot solve the problem of separate inner and outer packaging. They need to manually tie the inner bag and manually feed the outer bag into the 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 to propose an inner bag tying method and components that are convenient for automatic tying of the inner bag of a packaging bag with separated inner and outer bags, and that are conveniently and quickly adapted to a packaging machine with separated inner and outer bags.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an inner bag tying method suitable for a packaging machine with separated inner and outer packaging bags, characterized in that the device used in the method 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.

[0006] The strapping mechanism comprises a bag-tying cylinder and a servo drive arranged at the end of its piston rod, and the servo drive is connected to a strapping machine;

[0007] 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;

[0008] 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;

[0009] The pulley lifting mechanism includes 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.

[0010] Preferably, the closing mechanism comprises a sliding frame and a closing arm, wherein the sliding frame is arranged on the lifting bracket, the closing arm is arranged outside the bag-supporting mechanism, and one end of the closing arm is connected to the sliding frame, and the other end of the closing arm extends toward the bag opening of the packaging bag, and the closing arm is also equipped with a closing cylinder;

[0011] Preferably, the cable tie machine is provided with a servo drive, and comprises a housing, a wire wheel, and a workbench, wherein the workbench is arranged above the housing, and one end of the workbench extends out of the housing, the wire wheel is arranged on the housing and at the other end of the workbench, and a groove is provided at the extended end of the workbench, and the cable tie wire on the wire wheel bypasses the servo drive and passes downward from the groove;

[0012] Preferably, the workflow of the method is:

[0013] Step 1: The packaging bag is moved from the previous process to the bottom of the bag twisting mechanism. The bag twisting cylinder drives two sets of bag twisting arms, which slide forward and backward along the base plate to open and move the packaging bag into the open space. The closing cylinder controls the closing arms to buckle and the inner bag mouth shrinks.

[0014] Step 2: Driven by the bag-supporting cylinder, the bag-supporting arm extends between the outer bag and the inner bag of the packaging bag to open the outer bag. The lifting cylinder extends downward, and the heavy object moves upward. The bag-supporting arm is controlled to smoothly push the outer bag downward to separate the inner bag from the outer bag.

[0015] Step 3: The bag twisting arm is closed, the inner bag of the packaging bag is clamped, and the rotating motor rotates, driving the bag twisting arm to control the rotation of the inner bag. During the rotation process, the bag twisting arm is reset, and the inner bag is gradually tightened and thinned. The bag tying cylinder pushes the cable tie machine downward to the bag tying station. The servo drive controls the cable tie machine, and the cable tie machine spits out the bag tying line to tighten the inner bag mouth and shorten the bag tying line; the cable tie mechanism moves upward step by step and resets after completing multiple bag tying;

[0016] Step 4: The lifting mechanism is reset, and the lifting cylinder and the weight work together to drive the bag-supporting mechanism 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;

[0017] Step 5: The servo drive controls the cable tie wire to spit out the wire, tighten the inner bag opening, and cut the bag-binding wire; multiple cable tie machines can be set according to the length of the inner bag opening.

[0018] Compared with the prior art, the invention has the following beneficial effects: the bag-opening mechanism can open the outer bag and push it upward and downward; the closing mechanism and the bag-twisting mechanism can automatically close and tighten the inner bag; the tie-tie mechanism can automatically tie the inner bag opening step by step. The invention can realize the automatic packaging of the inner bag of the inner and outer separated packaging bag, improve the working conditions, increase the production efficiency, reduce the production cost, and reduce the work-related accidents; the whole process is safe, reliable, fast and efficient, and can be widely promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the present invention;

[0020] Figure 2 It is another angle schematic diagram of the present invention;

[0021] Figure 3 Schematic diagram of the bag twisting mechanism.

[0022] The markings in the figure are: 1. bag tying support frame; 2. connecting plate; 3. tie mechanism; 4. rotating mechanism; 5. lifting mechanism; 31. bag tying cylinder; 32. servo drive; 33. tie machine; 331. housing; 332. wire wheel; 333. workbench; 334. groove; 41. rotating motor; 42. bag twisting mechanism; 421. base plate; 422. bag twisting arm; 51. cylinder lifting mechanism; 52. pulley lifting mechanism; 511. lifting cylinder; 512. bag supporting mechanism; 513. bag supporting bracket; 514. bag supporting arm; 521. lifting bracket; 522. pulley; 523. closing mechanism; 524. pulley rope; 525. weight; 5231. sliding frame; 5232. closing arm. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] Embodiment 1

[0025] like Figure 1-3As shown, a method for tying inner bags of a packaging machine adapted to inner and outer separation of packaging bags comprises a bag tying support frame 1, on which a connecting plate 2 is provided, on which a tying mechanism 3, a rotating mechanism 4 and a lifting mechanism 5 are provided, wherein the tying mechanism 3 comprises a bag tying cylinder 31 and a servo drive 32 arranged at the end of its piston rod, wherein the servo drive 32 is connected to a tying machine 33; the rotating mechanism 4 comprises a rotating motor 41 and a bag twisting mechanism 42 arranged on the motor output shaft, wherein the bag twisting mechanism 42 comprises a base plate 421 and two groups of bag twisting arms 422, wherein the bag twisting arms 422 can slide back and forth on the base plate 421; the lifting mechanism 5 comprises a cylinder lifting mechanism 31 and a servo drive 32 arranged at the end of its piston rod, wherein the servo drive 32 is connected to a bag twist ... The lowering mechanism 51 and the pulley lifting mechanism 52, the cylinder lifting mechanism 51 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, and the bag-supporting arm 514 is equipped with a bag-supporting cylinder; the pulley lifting mechanism 52 includes a lifting bracket 521 connected to the bag-tying support frame 1, a pulley 522 is arranged at the upper end of the lifting bracket 521, and a closing mechanism 523 is arranged 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.

[0026] 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. The closing arm 5232 is arranged outside the bag supporting mechanism 512, and one end is connected to the sliding frame 5231, and the other end extends to the bag opening of the packaging bag. The closing arm 5232 is also equipped with a closing cylinder.

[0027] 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. The closing arm 5232 is arranged outside the bag supporting mechanism 512, and one end is connected to the sliding frame 5231, and the other end extends to the bag opening of the packaging bag. The closing arm 5232 is also equipped with a closing cylinder.

[0028] The cable tie machine 33 is provided with a servo drive 32, and includes a housing 331, a wire wheel 332, and a workbench 333. The workbench 333 is arranged above the housing 331, and one end thereof extends out of the housing 331. The wire wheel 332 is arranged on the housing 331 and at the other end of the workbench 333. A groove 334 is provided at the extended end of the workbench 333. The cable tie wire on the wire wheel 332 bypasses the servo drive 32 and passes downward from the groove 334.

[0029] The workflow of this method is:

[0030] Step 1: The packaging bag is moved from the previous process to the bottom of the bag twisting mechanism 42, and the bag twisting cylinder drives two sets of bag twisting arms 422, which slide forward and backward along the base plate 421 to open, and move the packaging bag into the opened space. The closing cylinder controls the closing arms 5232 to buckle, and the inner bag mouth shrinks;

[0031] Step 2: The bag-supporting arm 514 is driven by the bag-supporting cylinder to extend between the outer bag and the inner bag of the packaging bag to open the outer bag. The lifting cylinder 511 extends downward, and the weight 525 moves upward. The bag-supporting arm 514 is controlled to smoothly push the outer bag downward to separate the inner bag from the outer bag.

[0032] Step 3: The bag twisting arm 422 is closed to clamp the inner bag of the packaging bag, and the rotary motor 41 rotates to drive the bag twisting arm 422 to control the rotation of the inner bag. During the rotation process, the bag twisting arm 422 is reset, and the inner bag is gradually tightened and thinned. The bag tying cylinder 31 pushes the tie-tying machine 33 downward to the bag tying station, and the servo drive 32 controls the tie-tying machine 33. The tie-tying machine 33 spits out the bag tying line to tighten the inner bag mouth and shorten the bag tying line; the tie-tying mechanism 3 moves upward step by step and resets after completing multiple bag tying;

[0033] Step 4: The lifting mechanism 5 is reset, and the lifting cylinder 511 and the weight 525 work together to drive the bag-supporting mechanism 512 to reset, and the outer bag is lifted up to the original position, and the inner bag is tied tightly and the outer bag is opened, and then the bag moves to the next process;

[0034] Step 5: The servo drive 32 controls the cable tie wire to spit out the cable tie wire, tighten the inner bag opening, and cut the cable tie wire; multiple cable tie machines 33 can be set according to the length of the inner bag opening.

[0035] The working principle and working process of the present invention are as follows: the packaging bag is moved from the previous process to the bottom of the bag twisting mechanism 42, and the bag twisting cylinder drives two groups of bag twisting arms, so that the bag twisting arms 422 slide forward and backward along the base plate 421 and open, and the packaging bag moves into the open space, and the closing cylinder controls the closing arm 5232 to buckle and shrink the inner bag mouth; then, the bag support arm 514 is driven by the bag support cylinder to extend between the outer bag and the inner bag of the packaging bag to open the outer bag; because the end of the piston rod of the lifting cylinder 511 is connected to the bag support mechanism 512, one end of the pulley rope 524 is connected to the weight 525, and the other end bypasses the pulley 522 and is connected to the bag support mechanism 512, so the lifting cylinder 511 extends downward, and the weight 525 moves upward, and jointly controls the bag support arm 514 to steadily push the outer bag downward, so that the inner bag is separated from the outer bag. The lifting cylinder 511 and the weight 525 work together to avoid excessive force when the lifting cylinder 511 is started and stopped instantly, thereby damaging the packaging bag.

[0036] Subsequently, the bag twisting arm 422 closes and clamps the inner bag of the packaging bag. The rotating motor 41 rotates, driving the bag twisting arm 422 to control the rotation of the inner bag. During the rotation process, the bag twisting arm 422 resets, and the inner bag is gradually tightened and thinned. The bag tying cylinder 31 pushes the tie machine 33 downward to the bag tying station. The servo drive 32 controls the tie machine 33. The tie machine spits out the bag tying line, tightens the inner bag mouth, and shortens the bag tying line. The tie mechanism 3 moves upward step by step and resets after completing multiple bag tying.

[0037] Subsequently, the lifting mechanism 5 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 and the outer bag opening opened.

[0038] like Figure 2 As shown, a servo drive 32 is provided on the cable tie machine 33. The cable tie machine 33 includes a shell 331, a wire wheel 332, and a workbench 333. The workbench 333 is arranged above the shell 331, and one end thereof extends out of the shell 331. The wire wheel 332 is arranged on the shell 331 and at the other end of the workbench 333. A groove 334 is provided at the extended end of the workbench 333. The cable tie wire on the wire wheel 332 bypasses the servo drive 32 and passes downward from the groove 334. The servo drive 32 controls the cable tie wire to spit out the wire, tighten the inner bag mouth, and cut the bag-tying wire.

[0039] A plurality of cable tie machines 33 can be provided according to the length of the inner bag opening to achieve efficient cable tie.

[0040] 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. An inner bag tying method for a packaging machine with separated inner and outer packaging bags, characterized in that: The device used in the method comprises: a bag tying support frame (1), the bag tying support frame (1) is provided with a connecting plate (2), the connecting plate (2) is provided with a tying mechanism (3), a rotating mechanism (4), and a lifting mechanism (5), the tying mechanism (3) comprises a bag tying cylinder (31) and a servo drive (32) arranged at the end of its piston rod, the servo drive (32) is connected to a tying machine (33); the rotating mechanism (4) comprises a rotating motor (41) and a bag twisting mechanism (42) arranged on the output shaft of the motor, the bag twisting mechanism (42) comprises a base plate (421) and two groups of bag twisting arms (422), the bag twisting arms (422) can slide back and forth on the base plate (421); the lifting mechanism (5) comprises a cylinder lifting mechanism (51) and a pulley lifting mechanism (52). The cylinder lifting mechanism (51) comprises 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) comprising a bag-supporting bracket (513) and a bag-supporting arm (514), and the bag-supporting arm (514) is provided with a bag-supporting cylinder; the pulley lifting mechanism (52) comprises a lifting bracket (521) connected to the bag-tying support bracket (1), a pulley (522) is arranged at the upper end of the lifting bracket (521), and a closing mechanism (523) is arranged at the lower end, a pulley (522) rope is carried on the pulley (522), one end of the pulley (522) rope is connected to a weight (525), and the other end passes around the pulley (522) and is connected to the bag-supporting mechanism (512); The closing mechanism (523) comprises a sliding frame (5231) and a closing arm (5232), wherein the sliding frame (5231) is arranged on the lifting bracket (521), and the closing arm (5232) is arranged outside the bag-supporting mechanism (512), and one end of the closing arm is connected to the sliding frame (5231), and the other end extends toward the bag opening of the packaging bag, and the closing arm (5232) is also equipped with a closing cylinder; The cable tie machine (33) is provided with a servo drive (32). The cable tie machine (33) comprises a housing (331), a wire wheel (332), and a workbench (333). The workbench (333) is arranged above the housing (331), and one end of the workbench (333) extends out of the housing (331). The wire wheel (332) is arranged on the housing (331) and at the other end of the workbench (333). A groove (334) is provided at the extended end of the workbench (333). The cable tie wire on the wire wheel (332) bypasses the servo drive (32) and passes downward from the groove (334). The workflow of this method is: Step 1: The packaging bag is moved from the previous process to the bottom of the bag twisting mechanism (42), and the bag twisting cylinder drives two sets of bag twisting arms (422), which slide forward and backward along the base plate (421) to open, and the packaging bag is moved into the opened space. The closing cylinder controls the closing arms (5232) to buckle, and the inner bag mouth shrinks; Step 2: The bag-supporting arm (514) is driven by the bag-supporting cylinder to extend between the outer bag and the inner bag of the packaging bag to open the outer bag, the lifting cylinder (511) extends downward, and the weight (525) moves upward, and the bag-supporting arm (514) is controlled to smoothly push the outer bag downward to separate the inner bag from the outer bag; Step 3: the bag twisting arm (422) is closed to clamp the inner bag of the packaging bag, the rotating motor (41) rotates, driving the bag twisting arm (422) to control the rotation of the inner bag, during the rotation process, the bag twisting arm (422) is reset, the inner bag is gradually tightened and thinned, the bag tying cylinder (31) pushes the tie-tying machine (33) downward to the bag tying station, the servo drive (32) controls the tie-tying machine (33), the tie-tying machine (33) spits out the bag tying line, tightens the inner bag mouth, and shortens the bag tying line; the tie-tying mechanism (3) moves upward step by step, and resets after completing multiple bag tying; Step 4: The lifting mechanism (5) is reset, and the lifting cylinder (511) and the weight (525) work together to drive the bag-supporting mechanism (512) to reset, and the outer bag is lifted upward to the original position, and the inner bag is tied tightly and the outer bag is opened, and then the bag moves to the next process; Step 5: The servo drive (32) controls the cable tie wire to spit out the cable tie wire, tighten the inner bag opening, and cut the cable tie wire; multiple cable tie machines (33) can be set according to the length of the inner bag opening.

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