A double-layer three-dimensional paper bag making machine with separable inner and outer bags

Abstract

A double-layer three-dimensional paper bag making machine with separable inner and outer bags comprises a frame, one end of the frame is provided with an outer paper roll and an inner paper roll, the outer paper and the inner paper are respectively conveyed to the outer paper point cutting roller and the inner paper point cutting roller under the guidance of a plurality of guide rollers, the lower station of the outer paper point cutting roller and the inner paper point cutting roller is provided with an inner and outer paper composite roller, the inner and outer paper composite roller composites the outer paper and the inner paper with the side edges offset and conveys them forward, the lower station of the inner and outer paper composite roller is provided with a glue roller, the lower station of the glue roller is provided with a three-dimensional forming mechanism, after the paper passes through the three-dimensional forming mechanism, the first pressing roller presses the paper bag until the upper and lower surfaces overlap, the lower station of the first pressing roller is provided with a breaking mechanism for breaking the continuous paper bags into single paper bags, and a finished paper bag collection station is provided at the other end of the frame, the bag making machine of the present invention can produce double-layer paper bags with separable inner and outer bags, and is suitable for use in automatic bagging machines.

Description

Technical Field

[0001] The invention relates to the technical field of paper bag equipment, in particular to a double-layer fruit bag making machine. Background Art

[0002] Bagging young fruits is mainly to prevent them from being attacked by birds, harmed by pests and diseases, and damaged by wind, rain and sunlight during their growth. Bagging can also effectively isolate the fruits from environmental pollution and prevent them from being scratched by branches during their growth. Bagging can produce a local greenhouse effect, which can keep the fruits at the proper humidity and temperature, increase the sweetness of the fruits, improve the gloss of the fruits, increase the yield of the fruits, and shorten their growth period. At the same time, since no pesticides are required during the growth process, the fruits are of high quality and pollution-free, meeting international standards.

[0003] With the continuous improvement of technology, three-dimensional paper bags are better than plastic bags. When the three-dimensional paper bag is opened, the inner cavity is basically a cubic structure. When the two sides are folded inward so that the front and back of the paper bag overlap, the paper bag is flat. This three-dimensional paper bag is easy to store and has a small area, which is suitable for bagging machines. However, the inner and outer bags of the three-dimensional paper bags produced by the existing technology are glued together, and the bags can only be removed once. During the planting process of fruits such as apples and peaches, the bags are removed twice, which is better for the quality of the fruits. The existing three-dimensional fruit bag technology cannot meet actual needs. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies existing in the existing three-dimensional paper bag reproduction process, and further provide a double-layer three-dimensional paper bag making machine with separable inner bag and outer bag.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A double-layer three-dimensional paper bag making machine with separable inner and outer bags comprises a frame, one end of the frame is provided with an outer paper roller and an inner paper roller, the outer paper roller is sleeved with an outer paper roll, the inner paper roller is sleeved with an inner paper roll, the outer layer of paper on the outer paper roll is conveyed to the outer paper point cutting roller under the guidance of a plurality of guide rollers, the inner layer of paper on the inner paper roll is conveyed to the inner paper point cutting roller under the guidance of a plurality of guide rollers, the outer paper point cutting roller cuts an outer point break line on the outer layer of paper, the inner paper point cutting roller cuts an inner point break line on the inner layer of paper, an inner and outer paper composite roller is provided at the lower station of the outer paper point cutting roller and the inner paper point cutting roller, the inner and outer paper composite roller composites the side edge of the outer layer of paper and the side edge of the inner layer of paper together and conveys them forward, the lower station of the inner and outer paper composite roller is provided with a glue roller, the glue The rollers respectively provide glue lines on the misaligned sides of the outer layer of paper and the inner layer of paper, so that the inner bag and the outer bag of the finished paper bag are completely separated. A three-dimensional forming mechanism is arranged at the lower station of the upper glue roller, and the three-dimensional forming mechanism squeezes the paper into a three-dimensional cavity. After the paper passes through the three-dimensional forming mechanism, the first pressing roller presses the paper bag until the upper and lower surfaces overlap. A breaking mechanism for breaking the continuous paper bags into single paper bags is arranged at the lower station of the first pressing roller, and a finished paper bag collection platform is arranged at the lower station of the breaking mechanism, and the finished paper bag collection platform is arranged at the other end of the frame. The guide roller, the outer paper point cutting roller, the inner paper point cutting roller, the inner and outer paper composite roller, the upper glue roller, the three-dimensional forming mechanism, the first pressing roller, and the breaking mechanism are all arranged on the frame, and the paper is conveyed forward by a motor.

[0007] Furthermore, the inner and outer paper composite rollers and the first pressing roller are both pairs of synchronously driven rollers.

[0008] Furthermore, a film applying mechanism is provided before the inner and outer paper composite rollers, and the film applying mechanism sets a heat-sealing film for sealing at the opening end of each paper bag. The heat-sealing film is a material that is non-sticky at room temperature and becomes sticky after heating.

[0009] Furthermore, the film applying mechanism is provided with heat-sealing films at the opening end and the bottom end of each unit outer bag.

[0010] Furthermore, the film applying mechanism includes a glue applying head, a glue scraper and a glue applying head driving mechanism. The glue applying head is used to evenly apply glue to the sealing part of each bag, and the glue scraper scrapes the glue into a uniform required thickness.

[0011] Furthermore, the gluing head driving mechanism includes a gluing plate whose middle part is rotatably connected to the frame and a cam that drives the rear part of the gluing plate. The cam is driven by a motor. A gluing head is provided at the front end of the gluing plate. When the cam squeezes the rear part of the gluing plate, the gluing head is just close to the paper. A spring is also provided to make the rear part of the gluing plate close to the cam.

[0012] Furthermore, a cooling mechanism is provided between the film applying mechanism and the cutting roller for cooling the heat-sealing adhesive film to facilitate the subsequent bag making action.

[0013] Furthermore, the cooling mechanism is a plurality of cooling rollers and cooling fans.

[0014] Furthermore, two inner point break lines are arranged on the inner bag of each unit, including an upper point break line arranged at the opening end of the inner bag and a lower point break line arranged at the bottom end of the inner bag, and one outer point break line is arranged on the outer bag of each unit, and the upper point break line and the lower point break line of the inner bag of each unit are both located between the two adjacent outer point break lines, so that the opening end and the bottom end of the inner bag of the double-layer paper bag are retracted into the outer bag.

[0015] Furthermore, a cutting roller is arranged between the inner and outer paper composite roller and the gluing roller, and the cutting roller is used to cut a smooth opening on the paper for the fruit stem to pass through.

[0016] Furthermore, the three-dimensional forming mechanism includes a three-dimensional cavity bracket, folding plates arranged on both sides of the three-dimensional cavity bracket to bend the paper bag inward, and two smooth pressure rods arranged on the upper side of the three-dimensional cavity bracket to squeeze the paper. The three-dimensional cavity bracket includes an "I"-shaped bracket and four smooth guide rods arranged in parallel at the four ends of the "I"-shaped bracket. The two lower side rods of the "I"-shaped bracket are inclined to prevent the glue on the paper bag from sticking. The top of the three-dimensional cavity bracket is installed on the frame through a mounting frame.

[0017] Furthermore, the breaking mechanism comprises a first breaking roller pair, a second pressure roller and a second breaking roller pair which are sequentially arranged on the frame, and the first breaking roller pair, the second pressure roller and the second breaking roller pair are all synchronously driven roller pairs.

[0018] Furthermore, the breaking forces of the upper point breaking wire and the lower point breaking wire are different, the first breaking roller pair breaks the lower point breaking wire first, and the second breaking roller pair breaks the upper point breaking wire.

[0019] Furthermore, the rotation speed of the first breaking roller pair and the second breaking roller pair is greater than the rotation speed of the first pressing roller and the second pressing roller.

[0020] Furthermore, a guide plate forming a paper bag transmission channel is provided between the first breaking roller pair and the second pressing roller.

[0021] Furthermore, the second pressing roller is provided with a waste paper collecting opening on one side of the paper bag conveying direction, and an inclined plate is provided on the other side of the waste paper collecting opening, and the inclined plate prevents the paper bag conveyed from the second pressing roller from falling into the waste paper collecting opening.

[0022] Further, the distance between the first breaking roller pair and the second pressing roller is slightly smaller than the length of each unit bag, and the distance between the second pressing roller and the second breaking roller pair is slightly smaller than the length of each unit bag.

[0023] Furthermore, a heat cam is provided between the first pressing roller and the first breaking roller pair, and the heat cam heats and seals the bottom end of the double-layer paper bag. The heat cam just squeezes the bottom end of each unit paper bag, and the bottom end is lifted up and no longer contacts the paper bag after passing through.

[0024] Furthermore, a printing roller for printing color marks is also provided on the frame.

[0025] Beneficial effects of the present invention:

[0026] The three-dimensional paper bag making machine of the present invention can produce double-layer paper bags with separable inner and outer bags, realizes automatic control, and has high folding accuracy. The produced paper bags are suitable for use on automatic bagging machines, realizing automatic fruit bagging operations, greatly facilitating fruit farmers, and having good market promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 It is a schematic diagram of the main structure of the double-layer three-dimensional paper bag making machine with separable inner and outer bags of the present invention;

[0029] Figure 2 This is a schematic diagram of the working of the inner and outer paper composite roller and the glue roller of the present invention;

[0030] Figure 3 is a schematic cross-sectional view of the three-dimensional forming mechanism of the present invention;

[0031] Figure 4 is a schematic diagram of the breaking mechanism and the thermal cam of the present invention;

[0032] Figure 5 It is a structural schematic diagram of a paper bag made by the bag making machine of the present invention when the bag is opened;

[0033] Figure 6 This is a schematic diagram of a paper bag made by the bag making machine of the present invention after being unfolded;

[0034] The reference numerals in the figure are as follows:

[0035] 1-frame; 2-outer paper roller; 3-outer paper roll; 31-outer paper; 4-guide roller; 5-film application mechanism; 51 glue head; 52 glue scraper; 6-cooling mechanism; 61-cooling roller; 62-cooling fan; 7-inner paper roller; 8-inner paper roll; 81-inner paper; 9-inner paper point cutting roller; 91-inner point breaking line; 911-upper point breaking line; 912-lower point breaking line; 10-outer paper point cutting roller; 101-outer point breaking line; 11-inner and outer paper composite roller; 12-cutting roller; 14-glue roller; 141-glue line; 13-stereoscopic molding mechanism; 131-stereoscopic cavity bracket; 1311-"working "-shaped bracket; 1312-smooth guide rod; 1313-lower side rod; 132-folding plate; 133-smooth pressure rod; 15-first pressure roller; 16-breaking mechanism; 161-first breaking roller pair; 162-second pressure roller; 1621-waste paper collection opening; 1622-inclined plate; 163-second breaking roller pair; 17-hot cam; 18-counting roller; 19-printing roller; 20-paper bag; 201-heat sealing film; 202-fruit handle; 203-color mark; 204-inner bag; 205-outer bag; 21-finished paper bag collection table; 22-waste paper. DETAILED DESCRIPTION

[0036] Example 1

[0037] A double-layer three-dimensional paper bag making machine with separable inner and outer bags comprises a frame 1, one end of which is provided with an outer paper roller 2 and an inner paper roller 7, the outer paper roller 2 is sleeved with an outer paper roll 3, the inner paper roller 7 is sleeved with an inner paper roll 8, the outer layer of paper 31 on the outer paper roll 3 is conveyed to a film applying mechanism 5 under the guidance of a plurality of guide rollers 4, the film applying mechanism 5 is provided with a heat-sealing film 201 for sealing at the opening end and the bottom end of each unit paper bag of the outer layer of paper, the lower station of the film applying mechanism 5 is provided with a plurality of cooling rollers 61 and a cooling fan 62, which are used to cool the heat-sealing film to make it lose its stickiness and facilitate the subsequent bag making action; the lower station of the cooling roller 61 is provided with an outer paper point cutting roller 10, the outer paper point cutting roller 10 cuts an outer point break line 101 on the heat-sealing film 201 of the outer layer of paper 31.

[0038] The inner paper 81 on the inner paper roll 8 is conveyed to the inner paper point cutting roller 9 under the guidance of several guide rollers, and the inner paper point cutting roller 9 cuts an inner point break line 91 on the inner paper. The outer paper point cutting roller and the lower station of the inner paper point cutting roller are provided with an inner and outer paper compounding roller 11, and the inner and outer paper compounding roller compound the side edge of the outer paper 31 and the side edge of the inner paper 81 together and convey them forward in an offset manner. Two inner point break lines 91 are provided on each unit inner bag, including an upper point break line 911 set at a distance of 10-20mm from the outer point break line and a lower point break line 912 set at the bottom of the inner bag at a distance of 5-20mm from the next outer point break line. The upper point break line 911 and the lower point break line 912 of each unit inner bag are both located between the two adjacent outer point break lines 101, so that the opening end and the bottom end of the inner bag of the double-layer paper bag are retracted into the outer bag. The inner layer of paper between the lower break line 912 of each paper bag and the upper break line 911 of the next paper bag is waste paper 22.

[0039] A cutting roller 12 is provided at the lower station of the inner and outer paper composite roller 11. The cutting roller is used to cut a smooth opening 202 and a positioning opening for the fruit stem to pass through on the paper. A gluing roller 14 is provided at the lower station of the cutting roller. The gluing roller 14 sets a glue line 141 on the side edge of the inner paper 81 and the side edge of the dislocated outer paper 31 respectively, and sets a glue line 141 on the bottom end of each unit inner bag, so that the inner bag 203 and the outer bag 204 of the finished paper bag are completely separated.

[0040] A three-dimensional forming mechanism 13 is arranged at the lower station of the gluing roller 14, and the three-dimensional forming mechanism 13 squeezes the paper into a three-dimensional cavity. After the paper passes through the three-dimensional forming mechanism 13, the first pressing roller 15 presses the paper bag until the upper and lower surfaces overlap. A breaking mechanism 16 for breaking the continuous paper bags into single paper bags is arranged at the lower station of the first pressing roller 15, and a finished paper bag collection platform 21 is arranged at the lower station of the breaking mechanism 16. The finished paper bag collection platform 21 is arranged at the other end of the frame 1.

[0041] The guide roller 4, the outer paper point cutting roller 10, the inner paper point cutting roller 9, the inner and outer paper composite roller 11, the gluing roller 14, the three-dimensional forming mechanism 13, the first pressing roller 15, and the breaking mechanism 16 are all arranged on the frame 1, and the paper is transported forward by a motor drive.

[0042] The inner and outer paper composite rollers 11 and the first pressing roller 15 are both a pair of rollers that are synchronously driven by gears.

[0043] The heat-sealing film 201 is a material that is non-sticky at room temperature but becomes sticky after being heated.

[0044] The film applying mechanism 5 includes a glue head 51, a glue scraper 52 and a glue head driving mechanism. The glue head 51 is used to evenly apply glue to the sealing part of each bag, and the glue scraper 52 scrapes the glue liquid into a uniform required thickness. The glue head driving mechanism includes a glue plate whose middle part is rotatably connected to the frame and a cam that drives the rear part of the glue plate. The cam is driven by a motor. The front end of the glue plate is provided with a glue head. When the cam squeezes the rear part of the glue plate, the glue head is just close to the paper. A spring is also provided to make the rear part of the glue plate close to the cam.

[0045] The three-dimensional forming mechanism 13 includes a three-dimensional cavity bracket 131, folding plates 132 arranged on both sides of the three-dimensional cavity bracket to bend the paper bag inward, and two smooth pressure rods 133 arranged on the upper side of the three-dimensional cavity bracket to squeeze the paper. The three-dimensional cavity bracket 131 includes an "I"-shaped bracket 1311 and four smooth guide rods 1312 arranged in parallel at the four ends of the "I"-shaped bracket. The two lower side rods 1313 of the "I"-shaped bracket 1311 are inclined to avoid sticking to the glue on the paper bag. The top of the three-dimensional cavity bracket 131 is installed on the frame through a mounting frame.

[0046] The breaking mechanism 16 comprises a first breaking roller pair 161, a second pressing roller 162 and a second breaking roller pair 163 which are sequentially arranged on the frame, wherein the first breaking roller pair 161, the second pressing roller 162 and the second breaking roller pair 163 are roller pairs which are synchronously driven by gears. The paper bag transmission channel is also provided with a guide plate for controlling transmission.

[0047] The breaking forces of the upper breaking line 911 and the lower breaking line 912 are different. The rotation speeds of the first breaking roller pair 161 and the second breaking roller pair 163 are greater than the rotation speeds of the first pressing roller 15 and the second pressing roller 162. The first breaking roller pair 161 first breaks the lower breaking line 911, and the inner bag at the broken opening end of the paper bag grows out of the outer bag. When the paper bag is transmitted through the second pressing roller 162, the second pressing roller presses the protruding end of the inner bag, and the second breaking roller pair breaks the upper breaking line 912.

[0048] The second pressing roller 162 is provided with a waste paper collecting opening 1621 on one side of the paper bag conveying direction, and an inclined plate 1622 is provided on the other side of the waste paper collecting opening. The inclined plate prevents the paper bag conveyed from the second pressing roller from falling into the waste paper collecting opening.

[0049] The distance between the first breaking roller pair 161 and the second pressing roller 162 is slightly smaller than the length of each unit bag, and the distance between the second pressing roller and the second breaking roller pair is slightly smaller than the length of each unit bag.

[0050] A hot cam 17 is provided between the first pressing roller 15 and the first breaking roller pair 161. The first breaking roller pair 161 has broken the lower point breaking line 912 of the inner bag, so that there is no inner bag at the bottom end of the outer bag. When the bottom end of the paper bag passes through, the hot cam 17 just heats and seals the bottom end of the outer bag.

[0051] The above specific implementation methods are only detailed explanations of the technical solutions of the present invention. The present invention is not limited to the above embodiments. Those skilled in the art should understand that any improvements and substitutions based on the above principles and spirits on the basis of the present invention should be within the protection scope of the present invention.

Claims

1. A double-layer three-dimensional paper bag making machine with separable inner and outer bags, characterized in that: The machine comprises a frame, one end of which is provided with an outer paper roller and an inner paper roller, the outer paper roller is sleeved with an outer paper roll, the inner paper roller is sleeved with an inner paper roll, the outer layer of paper on the outer paper roll is conveyed to the outer paper point cutting roller under the guidance of a plurality of guide rollers, the inner layer of paper on the inner paper roll is conveyed to the inner paper point cutting roller under the guidance of a plurality of guide rollers, the outer paper point cutting roller cuts an outer point break line on the outer layer of paper, the inner paper point cutting roller cuts an inner point break line on the inner layer of paper, and an inner and outer paper composite roller is arranged at the lower station of the outer paper point cutting roller and the inner paper point cutting roller The inner and outer paper composite roller composites the side edges of the outer paper and the inner paper together and conveys them forward. The lower station of the inner and outer paper composite roller is provided with a glue roller. The glue roller sets glue lines on the misaligned side edges of the outer paper and the inner paper respectively, so that the inner bag and the outer bag of the finished paper bag are completely separated. The lower station of the glue roller is provided with a three-dimensional forming mechanism. The three-dimensional forming mechanism squeezes the paper into a three-dimensional cavity. After the paper passes through the three-dimensional forming mechanism, the first pressing roller presses the paper bag until the upper and lower surfaces overlap. The lower station of the first pressing roller is provided with a continuous A breaking mechanism for breaking a paper bag into individual paper bags, the breaking mechanism comprising a first breaking roller pair, a second pressure roller and a second breaking roller pair sequentially arranged on a frame, the first breaking roller pair, the second pressure roller and the second breaking roller pair are all synchronously driven roller pairs, the lower station of the breaking mechanism is provided with a finished paper bag collection platform, the finished paper bag collection platform is arranged at the other end of the frame, two inner point breaking lines are arranged on the inner bag of each unit, including an upper point breaking line arranged at the opening end of the inner bag and a lower point breaking line arranged at the bottom end of the inner bag, each single An outer point break line is arranged on the outer bag of each unit, and the upper point break line and the lower point break line of each unit inner bag are located between the two adjacent outer point break lines, so that the opening end and the bottom end of the inner bag of the double-layer paper bag are retracted into the outer bag, and the pulling force of the upper point break line and the lower point break line are different. The guide roller, the outer paper point cutting roller, the inner paper point cutting roller, the inner and outer paper composite roller, the gluing roller, the three-dimensional forming mechanism, the first pressing roller, and the pulling mechanism are all arranged on the frame, and the paper is transported forward by a motor drive.

2. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: The inner and outer paper composite rollers and the first pressing roller are both synchronously driven pairs of rollers.

3. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: A film applying mechanism is arranged before the inner and outer paper composite rollers, and the film applying mechanism sets a heat-sealing film at the opening end and the bottom end of each unit outer bag. The heat-sealing film is a material that is non-sticky at room temperature and sticky after heating.

4. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: The second pressing roller is provided with a waste paper collecting opening on one side of the paper bag conveying direction, and an inclined plate is provided on the other side of the waste paper collecting opening, and the inclined plate prevents the paper bag conveyed from the second pressing roller from falling into the waste paper collecting opening.

5. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: The distance between the first breaking roller pair and the second pressing roller is slightly smaller than the length of each unit bag, and the distance between the second pressing roller and the second breaking roller pair is slightly smaller than the length of each unit bag.

6. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: A heat cam is arranged between the first pressing roller and the first breaking roller pair, and the heat cam heats and seals the bottom end of the double-layer paper bag.

7. The double-layer three-dimensional paper bag making machine with separable inner and outer bags according to claim 1 is characterized in that: The frame is also provided with a printing roller for printing color marks.

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