Sheeting device for bag making machine

Abstract

The present invention discloses a bag-making machine sheeting device, comprising a frame, a sheeting roller, a support roller, and a drive motor. The sheeting roller is rotatably mounted at both ends on the frame. A pre-tear line cutter and a cutter are mounted on the sheeting roller. The support roller is rotatably mounted at both ends on the frame, and the support roller is positioned below the sheeting roller. The drive motor is mounted on the frame. When the pre-tear line cutter rotates with the sheeting roller until it is positioned below the sheeting roller, the pre-tear line cuts a pre-tear line on the tongue of a bag. When the cutter rotates with the sheeting roller until it is positioned below the roller, the cutter cuts away the waste material from the bottom of the bag to create the remaining tongue of another bag. The present invention can cut a tear line on the pre-punctured tongue of paper used to make paper bags and remove the excess paper remaining between two bags due to the removal of the tongue. The present invention is suitable for manufacturing paper bags having tongues and tear line structures.

Description

Technical Field

[0001] The invention relates to a sheet separating device for a bag making machine, belonging to the technical field of packaging bag making equipment. Background Art

[0002] At present, paper bags are widely used in many fields such as food packaging and daily necessities due to their advantages of convenience, safety and hygiene. The production of paper bags is completed on a bag making machine. The preparation is made by forming, pasting, cutting and other processes of paper into complete paper bags. In order to avoid being manually opened during delivery, paper bags currently used for food packaging such as takeout are provided with tongues on one side of the bag opening. Usually, three tongues are processed on one side of the paper bag opening to avoid the handle. The tongues are coated with glue and pasted with release paper. The roots of the tongues are cut with easy-tear lines during the paper bag processing process. After placing the food in the paper bag, the release paper is torn off and the tongues are folded toward the other side of the paper bag and adhered to the other side of the paper bag. The easy-tear line is used to tear off the tongues after receiving the food to open the paper bag and take out the contents of the paper bag. For food, the existing bag making machine is disclosed in the Chinese utility model patent with authorization announcement number CN206254564U. It is provided with a bag cutting roller for cutting continuous paper bags into individual paper bags. It can only cut straight incisions. During the preparation process of paper bags with tongues and easy-tear lines, on the one hand, because it is necessary to cut an easy-tear line on the tongue, the patent disclosed in the above-mentioned prior art cannot be processed. On the other hand, since the tongue is in a protruding state, it cannot be directly cut with a straight tool. The above-mentioned prior art patent cannot cut off the bag tongue. The bottom of each bag has a corresponding concave notch due to the processing of the tongue of the other bag mouth, which needs to be cut off before the bag is made, which will generate some waste. The collection of the waste is also one of the difficulties that need to be solved at present. Summary of the Invention

[0003] The purpose of the present invention is to provide a sheet separating device for a bag making machine, so as to solve the technical defects in the prior art that the bag making machine is not suitable for processing the tear line on the tongue at the bag opening and the excess paper is reserved at the bottom of the bag due to processing the tongue.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: a sheeting device for a bag making machine includes a frame, a sheeting roller, a support roller and a drive motor, the two ends of the sheeting roller are rotatably arranged on the frame, a pre-tear line cutter corresponding to the shape of the pre-tear line on the tongue of the bag to be made is provided on the sheeting roller, the length direction of the pre-tear line cutter is the same as the length direction of the sheeting roller, a cutter is provided on the sheeting roller, the length direction of the cutter is the same as the length direction of the sheeting roller, the two ends of the support roller are rotatably arranged on the frame, and the support roller is located below the sheeting roller, the drive motor is installed on the frame, and is used to drive the sheeting roller and the support roller to rotate, and the rotation direction of the sheeting roller and the support roller is opposite, the paper processed in the previous bag making process is conveyed between the sheeting roller and the support roller, when the pre-tear line cutter rotates with the sheeting roller to be located below the sheeting roller, the pre-tear line cutter cuts a pre-tear line on the tongue of the bag, and when the cutter rotates with the sheeting roller to be located below the sheeting roller, the cutter cuts off the waste formed by the remaining part of the tongue of another bag at the bottom of the bag. A pre-tear line cutter is provided on the separating roller in the present invention. When the paper that has been pre-punctured into a tongue shape in the previous process of making a bag passes between the separating roller and the supporting roller, the pre-tear line cutter rolls the paper and cuts a pre-tear line on the tongue. When the paper rotates with the separating roller and the supporting roller and is transported to the cutter to roll the paper, the paper reserved at the bottom of the bag due to the tongue of another bag is cut off, and the waste between the two bags is removed. Therefore, the separating roller in the present invention can cut a pre-tear line on the same paper bag and remove waste when it rotates one circle. The present invention is suitable for the manufacture of paper bags with tongues and easy-tear line structures.

[0005] As a further improvement of the present invention, a waste suction device is provided on the support roller. The waste suction device is used to absorb the waste material cut by the cutter and release the waste material when the waste suction device rotates with the support roller and is located below the support roller. The waste suction device is provided in the present invention. After the waste material is cut by the cutter, the waste suction device sucks the waste material, causing the waste material to be adsorbed on the waste suction device, and then the waste material is released from the lower portion of the support roller, and the waste material falls downward from the bottom of the support roller, thereby facilitating the removal of the waste material.

[0006] As a further improvement of the present invention, the present invention further includes a waste collection box, which is located below the support roller and has an open top for collecting waste dropped from the waste suction device. The present invention provides a waste collection box, and waste dropped from the waste suction device is collected in the waste collection box. This not only facilitates waste collection, but also maintains a clean environment for the use of the present invention.

[0007] As a further improvement of the present invention, a waste guide barrel is further included. The waste guide barrel is mounted on the frame. Waste falling from the waste suction device falls into the waste guide barrel from the top of the waste guide barrel and is discharged into the waste collection box through the waste guide barrel for collection. The present invention is provided with a waste guide barrel. Waste falling from the waste suction device first falls into the waste guide barrel. The waste guide barrel guides the waste downward, ensuring that the waste falls accurately into the waste collection box and preventing the waste from falling outside the waste collection box, thereby further improving the waste collection effect.

[0008] As a further improvement of the present invention, a cavity is formed on the support roller, and a waste suction plate is installed at the cavity. The waste suction plate is provided with a plurality of waste suction holes running through both sides thereof. An air extraction hole is provided axially at one end of the support roller, and the air extraction hole is communicated with the cavity. One end of the support roller is connected to an air extraction device using a rotary joint and an air suction pipe. The air extraction device extracts air from the cavity to adsorb the waste onto the waste suction plate. The present invention provides a cavity on the support roller, extracts air from the cavity using the air extraction device, and the waste suction holes on the waste suction plate draw external air from the cavity, thereby adsorbing the waste onto the waste suction plate. The present invention facilitates the extraction of air from the cavity by providing an air extraction hole communicated with the cavity. A rotary joint is provided on the support roller, and the air suction pipe will not be entangled when the support roller rotates.

[0009] As a further improvement to the present invention, a mounting block is rotatably provided at each end of the separating roller. The mounting block is mounted on the frame and forms a movable pair with the frame. The mounting block is provided with an adjustment device for driving the mounting block to slide up and down. The mounting block slides up and down relative to the frame to adjust the distance between the separating roller and the support roller. In the present invention, mounting blocks are provided at both ends of the separating roller. The relative sliding of the mounting blocks and the frame allows the separating roller to move relative to the frame. The distance between the separating roller and the support roller can be appropriately adjusted according to the thickness of the paper used to make the bags, thereby improving the versatility of the present invention. The adjustment device in the present invention is used to adjust the relative movement of the mounting block and the frame.

[0010] As a further improvement of the present invention, the adjustment device includes a screw, the bottom end of which is rotatably connected to the mounting block, the top end of which passes through the frame and is provided with a nut, and a spring is sleeved on the screw, the top and bottom ends of which respectively abut against the frame and the mounting block. When the nut is rotated, the screw drives the mounting block to slide up and down, and the spring expands and contracts as the mounting block moves up and down. In the present invention, the screw and the nut cooperate, and by turning the nut, the rotation of the nut is converted into linear motion of the screw, thereby driving the mounting block to move up and down. The present invention is provided with a spring, and when the mounting block moves up and down, the spring contracts or expands to store and release energy, respectively.

[0011] As a further improvement to the present invention, a driving gear is provided at one end of the support roller, a driven gear is provided at one end of the separating roller, the driving gear and the driven gear meshing with each other, and a drive motor is connected to one end of the support roller. Through the meshing of the driving gear and the driven gear, the drive motor of the present invention simultaneously drives the support roller to rotate while the support roller drives the separating roller to rotate. Furthermore, due to the characteristics of the gear meshing, the present invention uses a single drive motor to drive the separating roller and the support roller to rotate synchronously in opposite directions, thereby achieving paper conveyance while reducing the number of drive motors required in the present invention.

[0012] As a further improvement of the present invention, a driven pulley is provided at one end of the support roller, a driving pulley is provided on the output shaft of the drive motor, the driving pulley and the driven pulley are connected by a synchronous belt, and a tensioning pulley is provided on the frame for adjusting the tension of the synchronous belt. The present invention facilitates the connection between the drive motor and the support roller by installing the driving pulley and the driven pulley on the motor output shaft and the support roller, respectively. The present invention provides a tensioning pulley to maintain the tension of the synchronous belt and prevent slipping during the synchronous belt transmission in use.

[0013] As a further improvement of the present invention, a breaking plate is provided on the separating roller, and a rubber pad is provided on the breaking plate. The rotation speed of the separating roller is greater than the rotation speed of the traction roller in the previous process. When the breaking plate rotates with the separating roller until the paper is pressed between the breaking plate and the support roller, it is used to tear the paper apart at the location where the paper was pre-punctured at the bag opening in the previous process to form a tongue. The breaking plate and rubber pad in the present invention are used to press the paper between the separating roller and the pressure roller, wherein the rubber pad is used to increase the friction between the rubber pad and the paper. Due to the speed difference between the separating roller and the traction roller in the previous process, the paper is conveyed at a slow speed at the location in the previous process, while the paper is conveyed at a fast speed at the separating roller, thereby tearing the paper apart and separating the bag from the entire paper.

[0014] In summary, the beneficial effects of the present invention are as follows: the present invention can cut an easy-tear line on the tongue that has been pre-punctured on the paper used to make paper bags and cut off the extra paper reserved between the two bags due to the cutting of the tongue. The present invention is suitable for the manufacture of paper bags with tongues and easy-tear line structures. The present invention adopts the speed difference between the spreading roller and the traction roller to make the conveying speed of the paper at the traction roller and the spreading roller different, and then the paper is torn off at the incision of the tongue formed by the pre-punctured incision at the spreading roller, thereby realizing the separation of the tongue and the waste material at the mouth of the paper bag, and there is no need to separately set a cutter with the same shape as the edge of the tongue for cutting and separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention from another angle.

[0018] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0019] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle.

[0020] Figure 6 The present invention is not a schematic diagram showing the three-dimensional structure of the right wall panel state.

[0021] Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention, not showing the state of the right wall panel from another angle.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the support roller in the present invention (excluding the support shaft and the waste suction plate).

[0023] Figure 9 yes Figure 8 A three-dimensional cross-sectional view of .

[0024] Figure 10 Schematic diagram of the three-dimensional structure of the waste suction plate in the present invention.

[0025] Figure 11 It is a schematic diagram of the three-dimensional structure of the fixing plate in the present invention.

[0026] Figure 12 It is a three-dimensional cross-sectional view of the fixing plate in the present invention.

[0027] Figure 13 It is a schematic diagram of the three-dimensional structure of the pre-tear wire cutter fixing frame of the present invention.

[0028] Figure 14 It is a schematic diagram of the three-dimensional structure of the clamping sleeve in the present invention.

[0029] Figure 15 It is a three-dimensional cross-sectional view of the support shaft along the axial direction in the present invention.

[0030] Figure 16 It is a schematic diagram reflecting the installation of the roller shaft in the present invention.

[0031] Wherein: 1. Frame; 101. Left wall panel; 102. Right wall panel; 103. Rectangular support hole; 104. Guide block; 105. Guide groove; 106. Fixed block; 107. Threaded sleeve; 108. Vertical support rod; 109. Horizontal fixed rod; 2. Spreading roller; 201. Roller shaft; 202. Pre-tear wire cutter fixing frame; 203. Cutter fixing frame; 204. Fixing frame unit A; 205. Fixing frame unit B; 206. Groove; 207. Mounting part; 208. Connecting circular plate; 209. Connecting through hole; 210. Support plate; 3. Support roller; 301. Support shaft; 302. Support cylinder; 303. Support circular plate; 304. Clamping sleeve; 305. Notch; 306. Flat plate; 307. Sealing sheet; 308. Fixing plate; 309. Vent A; 310 , vent B; 311, vent C; 312, vent D; 313, annular groove; 4, drive motor; 5, pre-tear wire tool; 501, knife holder; 502, knife die; 6, cutter; 601, clamping plate; 602, blade; 7, waste suction device; 8, waste collection box; 9, waste guide cylinder; 901, upper cylinder unit; 902, lower cylinder unit; 903, horizontal support rod; 904, connecting plate; 10, cavity; 11, waste suction plate; 12, waste suction hole; 13, exhaust hole; 14, mounting block; 15, screw; 16, spring; 17, driving gear; 18, driven gear; 19, driven pulley; 20, driving pulley; 21, synchronous belt; 22, tensioner; 23, breaking pressure plate; 24, rubber pad; 25, motor seat; 26, fixing seat; 27, long hole. Implementation Method

[0032] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Example 1

[0033] like Figures 1 to 3 The sheeting device for the bag making machine shown includes a frame 1. The frame 1 in this embodiment includes a left wall panel 101 and a right wall panel 102. The left wall panel 101 is parallel to the right wall panel 102, and the bottoms of the left wall panel 101 and the right wall panel 102 are supported by the ground when in use.

[0034] like Figure 1 As shown, this embodiment is provided with a spreading roller 2, a support roller 3 and a drive motor 4. Figure 6 and Figure 7 As shown, the separating roller 2 includes a roller shaft 201 and a plurality of fixing frames arranged on the roller shaft 201. The fixing frames are arranged at intervals along the length direction of the roller shaft 201. The fixing frames in this embodiment include a plurality of pre-tear line tool fixing frames 202 and a plurality of cutter fixing frames 203. The structure of the pre-tear line tool fixing frame 202 is the same as that of the cutter fixing frame 203. Figure 13As shown, both include a fixing frame unit A204 and a fixing frame unit B205. A semicircular groove 206 is provided on the side facing each other of the fixing frame unit A204 and the fixing frame unit B205. The radius of the groove 206 is equal to the radius of the roller shaft 201. The fixing frame unit A204 and the fixing frame unit B205 are respectively located on both sides of the roller shaft 201, and the fixing frame unit A204 and the fixing frame unit B205 are detachably mounted on the roller shaft 201 by two bolts located on both sides of the roller shaft. Tighten the bolts to clamp the fixing frame unit A204 and the fixing frame unit B205 on the roller shaft 201. At this time, the groove 206 fits in with the roller shaft 201. A mounting portion 207 is formed by protruding from one end of the fixing frame unit A204 away from the side of the fixing frame unit B205. After the pre-tear line tool fixing frame 202 and the cutter fixing frame 203 in this embodiment are installed on the roller shaft 201, the projections of the mounting portions 207 of the two on the plane perpendicular to the center line of the roller shaft 201 are staggered from each other. In this embodiment, the roller shaft 201 of the spreading roller 2 uses bearings at both ends to be rotatably set on the left wall panel 101 and the right wall panel 102 of the frame 1 respectively. When the roller shaft 201 rotates relative to the left wall panel 101 and the right wall panel 102, the pre-tear line tool fixing frame 202 and the multiple cutter fixing frames 203 installed on the roller shaft 201 rotate synchronously therewith.

[0035] A pre-tear line tool 5 corresponding to the shape of the pre-tear line on the tongue of the bag to be made is provided on the pre-tear line tool fixing frame 202 of the separating roller 2. The length direction of the pre-tear line tool 5 is the same as the length direction of the separating roller 2, and the pre-tear line tool 5 is detachably installed with bolts and the mounting portion 207 of the pre-tear line tool fixing frame 202. A cutter 6 is provided on the cutter fixing frame 203 of the separating roller 2. The length direction of the cutter 6 is the same as the length direction of the separating roller 2, and the cutter 6 is detachably installed with bolts and the mounting portion 207 of the cutter fixing frame 203. The pre-tear line tool 5 and the cutter 6 in this embodiment rotate synchronously with the rotation of the roller shaft 201. The two ends of the support roller 3 in this embodiment are rotatably arranged on the left wall panel 101 and the right wall panel 102 of the frame 1 respectively using bearings, and the support roller 3 is located below the separating roller 2. The pre-tear line tool 5 in this embodiment includes a rectangular tool holder 501 and several cutting dies 502 arranged on the tool holder 501. The shape of the cutting die 502 is the same as the shape of each incision in the pre-tear line. The tool holder 501 is installed on the mounting portion 207 of the pre-tear line tool fixing frame 202. In this embodiment, the cutting dies 502 are divided into three groups, corresponding to the positions of the three tongues on each bag, so as to cut incisions on the three tongues respectively to form the pre-tear line of the bag; the cutter 6 in this embodiment includes two plywood 601 and a blade 602, wherein the blade 602 is arranged between the two plywood 601, and the cutter 6 is detachably mounted on the mounting portion 207 of the cutter fixing frame 203 using bolts passing through the two plywood 601 and the blade 602. Since the pre-tear line tool 5 and the cutter 6 in this embodiment are respectively mounted on the mounting portion 207 of the pre-tear line tool fixing frame 202 and the mounting portion 207 of the cutter fixing frame 203, the angle between the pre-tear line tool fixing frame 202 and the cutter fixing frame 203 can be adjusted according to the length of the bag to be produced to adjust the distance between the pre-tear line tool 5 and the cutter 6 cutting the bag, which is suitable for processing bags of different lengths without the need to replace the separating roller 2 as a whole.

[0036] The drive motor 4 in this embodiment is detachably mounted on the left wall panel 101 of the frame 1 on the side away from the right wall panel 102 using a motor base 25. The drive motor 4 is used to drive the spreading roller 2 and the support roller 3 to rotate, and the spreading roller 2 in this embodiment rotates in opposite directions to the support roller 3. The paper processed in the previous procedure of making bags is transported between the spreading roller 2 and the support roller 3. When the pre-tear line tool 5 rotates with the spreading roller 2 to a state below the spreading roller 2, the pre-tear line tool 5 cuts a pre-tear line on the tongue of the bag. When the cutter 6 rotates with the spreading roller 2 to a state below the spreading roller 2, the cutter 6 cuts off the waste formed by the remaining part of the tongue of another bag at the bottom of the bag. Example 2

[0037] This embodiment is a further improvement made on the basis of Example 1. Compared with Example 1, in order to facilitate the collection of waste, this embodiment is provided with a waste suction device 7 on the support roller 3. The waste suction device 7 is used to absorb the waste cut by the cutter 6, and when the waste suction device 7 rotates with the support roller 3 to be located below the support roller 3, the waste is released and the waste falls downward.

[0038] The present embodiment is preferably provided with a waste collection box 8, which is located below the support roller 3. The top of the waste collection box 8 is open and is used to collect waste dropped from the waste suction device 7. The present embodiment provides a rectangular support hole 103 at the lower part of the left wall panel 101 and the right wall panel 102, wherein the waste collection box 8 is a rectangular parallelepiped with an open top as a whole. The two ends of the waste collection box 8 are respectively placed in the rectangular support holes 103 at the lower part of the left wall panel 101 and the right wall panel 102, and are supported by the left wall panel 101 and the right wall panel 102. In order to avoid the waste collection box 8 from moving in the front-to-back direction in the rectangular support hole 103 when in use, the length of the rectangular support hole 103 in the front-to-back direction in the present embodiment is slightly larger than the width of the waste collection box 8 in the front-to-back direction. When the waste collection box 8 is placed in the rectangular support hole 103, there is only a small gap between the two.

[0039] In this embodiment, a waste guide tube 9 is provided to facilitate the introduction of waste materials dropped from the waste suction device 7 into the waste collection box 8. The waste guide tube 9 in this embodiment is installed on the frame 1. The waste materials dropped from the waste suction device 7 fall into the waste guide tube 9 from the top of the waste guide tube 9 and are discharged into the waste collection box 8 for collection through the waste guide tube 9. The cross-section of the waste guide barrel 9 in this embodiment is rectangular, and the waste guide barrel 9 includes an upper barrel unit 901 and a lower barrel unit 902. The bottom end of the upper barrel unit 901 is fixedly connected to the top end of the lower barrel unit 902. The upper barrel unit 901 is a structure with a larger upper end and a smaller lower end. The upper end of the upper barrel unit 901 has a large opening, which is convenient for the waste falling from the waste suction device 7 to fall downward into the waste guide barrel 9. The lower barrel unit 902 is a rectangular shell structure, and the length and width of the lower barrel unit 902 are respectively equal to the length and width of the bottom of the upper barrel unit 901. The bottom end of the lower barrel unit 902 extends into the waste collection box 8 or hangs above the waste collection box 8, and the distance between the lower barrel unit 902 and the top of the waste collection box 8 is such that the waste will not fall outside the waste collection box 8. In order to facilitate the installation of the waste guide barrel 9, this embodiment is provided with a waste guide barrel mounting frame, which includes two horizontal support rods 903 and two connecting plates 904. The two horizontal support rods 903 are arranged in parallel and are respectively located on both sides of the lower barrel unit 902. The two horizontal support rods 903 are detachably connected to the two sides of the lower barrel unit 902 by bolts. The two connecting plates 904 are respectively located at the two ends of the horizontal connecting rods 903, and the two ends of the connecting plates 904 are detachably connected to the ends of the two horizontal connecting rods 903 by bolts. The two connecting plates 904 in this embodiment are detachably mounted on the left wall panel 101 and the right wall panel 102 by bolts to achieve fixed installation of the waste guide barrel 9.

[0040] The specific structure of the waste suction device 7 in this embodiment is as follows: a cavity 10 is formed on the support roller 3, and a waste suction plate 11 is installed in the cavity 10. Figure 10 As shown, the waste suction plate 11 is provided with a plurality of waste suction holes 12 running through both sides thereof, and an air extraction hole 13 is provided along the axial direction at one end of the support roller 3. The air extraction hole 13 is communicated with the cavity 10. One end of the support roller 3 is connected to the air extraction device through a rotary joint and an air suction pipe. The air extraction device extracts the air in the cavity 10 to adsorb the waste on the waste suction plate 11. Figure 8 and Figure 9 As shown, the support roller 3 in this embodiment includes a support shaft 301, a support cylinder 302 and two support circular plates 303. The two support circular plates 303 are sleeved on the support shaft 301, and a clamping sleeve 304 is provided on the end of the support shaft 301 away from the rotary joint. Figure 14As shown, the clamping sleeve 304 is provided with a notch 305, and a circular hole and a threaded hole are respectively provided on both sides of the notch 305 on the clamping sleeve 304, and a bolt passing through the circular hole and threadedly engaged with the threaded hole is used to clamp the clamping sleeve 304 on the support shaft 301, and a through hole is provided in the axial direction of the clamping sleeve 304, and a bolt passing through the through hole and threadedly engaged with the support circular plate 303 is used to detachably install the support circular plate 303 on the clamping sleeve 304, and the support circular plate 303 is fixed to the support shaft 301 by clamping the clamping sleeve 304 on the support shaft 301. The two ends of the support cylinder 302 in this embodiment are respectively sleeved on the two support circular plates 303, and a long groove is provided on the support cylinder 302 in this embodiment along the direction parallel to its axis. The slot corresponding to the long slot on 303 is provided with a flat plate 306 in the slot, and a sealing sheet 307 is provided on each side of the flat plate 306. The sealing sheet 307 fits in the long slot, and the aforementioned cavity 10 is formed between the two sealing sheets 307 and the flat plate 306. The outer surface of the waste suction plate 11 in this embodiment is an arc surface, and the side of the waste suction plate 11 close to the flat plate 306 is concave in the direction away from the flat plate 306. The two ends of the waste suction plate 11 are detachably mounted on the support cylinder 302 by bolts that pass through the waste suction plate 11 and the flat plate 306 and are threadedly matched with the support circular plate 303. The exhaust hole 13 in this embodiment is opened on one end of the support shaft 301. In this embodiment, a fixing plate 308 is provided on one side of the exhaust hole 13. Figure 11 and Figure 12 As shown, the fixing plate 308 is a circular plate sleeved on the support shaft 301, and the outer diameter of the fixing plate 308 is equal to the outer diameter of the support cylinder 302. A vent hole A309 is radially opened on the fixing plate 308. The vent hole A309 can be a blind hole and does not pass through the outer cylindrical surface of the fixing plate 308. Figure 15 As shown, a vent B310 is opened in the radial direction on the support shaft 301, and the vent B310 is communicated with the vent A309. A vent C311 is opened in the axial direction on the fixed plate 308, which is communicated with the vent A309. A vent D312 is opened on the end of the waste suction plate 11 connected to the fixed plate 308 and communicated with the cavity 10. Since the cavity 10 passes through the vent D312, the vent C311, the vent A309 and the vent B310 in sequence, It is connected to the exhaust hole 13, so the air in the cavity 10 can be extracted through the exhaust hole 13, so that the waste can be adsorbed by the waste suction hole 12. In order to facilitate the communication between the vent B310 and the vent A309, this embodiment provides an annular groove 313 on the inner cylindrical surface of the fixed plate 308, wherein the vent A309 is connected to the annular groove 313. In this way, even if the fixed plate 308 and the support shaft 301 rotate relative to each other, it will not affect the communication between the vent A308 and the vent B310.

[0041] When this embodiment is in use, the air extraction device extracts air from the cavity 10, which can absorb waste and adsorb the waste onto the surface of the waste suction plate 11, which rotates with the rotation of the support roller 3. When the support roller 3 rotates to the point where the waste suction plate 11 is located below the support roller 3, the air extraction device no longer extracts air from the cavity 10, which loosens the waste. The waste falls downward into the waste guide tube 9 under the action of gravity and is ultimately collected in the waste collection box 8. This embodiment can blow the waste downward by inflating air into the cavity 10 when the waste suction plate 11 rotates with the support roller 3 to the point where it is located below the support roller 3, which is more conducive to the waste falling into the waste guide tube 9. The structure of the remaining parts of this embodiment is the same as that of Example 1. For details, please refer to Example 1 and this embodiment will not be repeated. Example 3

[0042] This embodiment is a further improvement made on the basis of the embodiment 2. Compared with the embodiment 2, the embodiment adopts a bearing to rotate and set a mounting block 14 at both ends of the roller shaft 201 of the spreading roller 2. Figure 4 The mounting block 14 is a rectangular block. The mounting block 14 is arranged on the frame 1 and forms a moving pair with the frame 1. In order to realize the relative movement of the mounting block 14 and the frame 1, a guide block 104 is installed on each side of the upper part of the left wall panel 101 and the right wall panel 102 facing each other. A guide groove 105 is opened on the guide block 104 along the up and down direction. The guide groove 105 runs through the upper and lower sides of the guide block 104. The mounting block 14 is arranged in the guide groove 105 and can move in the guide groove 105. In this embodiment, an adjustment device for driving it to slide up and down is provided on the mounting block 14. The mounting block 14 slides up and down relative to the frame 1 to adjust the distance between the sheeting roller 2 and the support roller 3.

[0043] In this embodiment, a fixing block 106 is detachably mounted on the top of the guide block 104 by a bolt. A threaded hole is provided on the fixing block 106, which passes through the upper and lower sides thereof. A threaded sleeve 107 is provided in the threaded hole and is threadedly matched with the threaded sleeve 107. A spring mounting hole is provided at the lower portion of the threaded sleeve 107. The adjusting device in this embodiment includes a screw 15, the bottom end of which is rotatably connected to the mounting block 14. In this embodiment, the rotatable connection between the screw 15 and the mounting block 14 is a prior art. The top end of the screw 15 passes through the threaded sleeve 107 and is threadedly matched with the threaded sleeve. A nut is provided on the screw 15, and a spring 16 is sleeved on the screw 15. Figure 16As shown, the spring 16 is located in the spring mounting hole, with the top and bottom ends of the spring 16 respectively abutting the threaded sleeve 107 and the mounting block 14. The spring 16 is in a compressed state. By turning the nut, the screw 15 drives the mounting block 14 to slide up and down, and the spring 16 expands and contracts with the up and down movement of the mounting block 14. In this embodiment, a vertical support rod 108 is detachably mounted on one side of the guide block 104 using bolts, and a horizontal fixing rod 109 is detachably mounted on the top of the vertical support rod 108 using bolts. The top end of the screw 15 passes upward through the horizontal fixing rod 109, and the nut on the screw 15 is located above the horizontal fixing rod 19, with the bottom of the nut supported by the horizontal fixing rod 19. In this embodiment, by turning the nut, the bolt 15 moves upward or downward, driving the mounting block 14 to move up and down within the guide slot 105, thereby moving the roller shaft 201 up and down to adjust the distance between the sheeting roller 2 and the support roller 3 as a whole. The structure of the rest of the embodiment is the same as that of embodiment 2. For details, please refer to embodiment 2 and this embodiment will not elaborate on it. Example 4

[0044] This embodiment is a further improvement on the basis of Example 3. Compared with Example 3, in order to realize that a driving motor 4 drives the spreading roller 2 and the support roller 3 to rotate at the same time and in opposite directions, a driving gear 17 is installed at one end of the support shaft 301 of the support roller 3, and a driven gear 18 is provided at one end of the roller shaft 201 of the spreading roller 2. In this embodiment, the driving gear 17 and the driven gear 18 are both located on the side close to the left wall panel 101. The driving gear 17 is meshed with the driven gear 18. The driving motor 4 is connected to one end of the support shaft 301 of the support roller 3. The driving motor 4 drives the support roller 3 to rotate, and through the meshing of the driving gear 17 and the driven gear 18, the spreading roller 2 and the support roller 3 are driven to rotate synchronously in opposite directions.

[0045] like Figure 5As shown, in this embodiment, a driven pulley 19 is provided at one end of the support shaft 301 of the support roller 3, and the driven pulley 19 is installed after the end of the driving gear 17 is installed on the support shaft 301 passes through the left wall panel 101, and a driving pulley 20 is provided on the output shaft of the drive motor 4, wherein the driving pulley 20 is located in the motor seat 25, and the driving pulley 20 and the driven pulley 19 are connected by a synchronous belt 21. In this embodiment, a tensioning pulley 22 is provided on the frame 1 for adjusting the tension of the synchronous belt 21. In this embodiment, a fixing base 26 is provided on the side of the left wall panel 101 away from the right wall panel 102. This fixing base 26 is a rectangular plate. Long holes 27 are provided along the length of the fixing base 26, extending through the left and right sides of the base. Two or more bolts are provided in the long holes 27, which are threadedly engaged with the left wall panel 101. The rotation axis of the tensioning wheel 22 is fixed to one end of the fixing base 26. When the bolts of the fixing base 26 are loosened, the fixing base 26 can be moved along the length of the long holes 27 to tighten the synchronous belt 21. The bolts of the fixing base 26 can then be tightened. The remaining structure of this embodiment is the same as that of Example 3. For details, please refer to Example 3 and will not be repeated in this embodiment. Example 5

[0046] This embodiment is a further improvement of embodiment 4. Compared with embodiment 4, this embodiment is provided with a breaking pressure plate 23 on the spreading roller 2, and a rubber pad 24 is provided on the breaking pressure plate 23. In this embodiment, a connecting circular plate 208 is fixed at both ends of the roller shaft 201 of the spreading roller 2, wherein connecting through holes 209 are opened at both ends of the breaking pressure plate 23 and the rubber pad 24, and the breaking pressure plate 23 and the rubber pad 24 are detachably mounted on the connecting circular plate 208 by bolts passing through the connecting through holes 209 and threadedly engaged with the connecting circular plate 208, wherein the bolts for mounting the breaking pressure plate 23 and the rubber pad 24 are arranged along the radial direction of the connecting circular plate 208. The rotation speed of the spreading roller 2 in this embodiment is The speed is greater than the rotation speed of the traction roller in the previous processing procedure. When the breaking plate 23 rotates with the separating roller 2 until the paper is pressed between the breaking plate 23 and the support roller 3, the paper is pressed between the rubber pad 24 and the support cylinder 302. The difference between the two rotation speeds is used to tear the paper to form a tongue at the part pre-punctured at the bag opening in the previous procedure. The breaking plate 23 is used to maintain strength, while the rubber pad 24 is used to increase friction with the paper. In order to further enhance the strength of the breaking plate 23, this embodiment can be provided with a support plate 210 in the middle of the roller 201, and the breaking plate 23 and the rubber pad 24 are detachably connected to the support plate 210 by bolts in the middle. The structure of the rest of the embodiment is the same as that of embodiment 4. For details, please refer to embodiment 4 and this embodiment will not be repeated.

[0047] Any portion of the above description not specifically described herein is prior art or can be implemented using prior art. Furthermore, the specific embodiments described herein are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. In other words, any equivalent variations and modifications made within the scope of the present invention should be considered within the technical scope of the present invention.

Claims

1. A sheeting device for a bag making machine, comprising a frame (1), characterized in that: The invention also includes a separating roller (2), a supporting roller (3), a driving motor (4), a waste collection box (8) and a waste guide tube (9), wherein both ends of the separating roller (2) are rotatably arranged on the frame (1), a pre-tear line cutter (5) corresponding to the shape of the pre-tear line on the tongue of the bag to be made is arranged on the separating roller (2), and the length direction of the pre-tear line cutter (5) is the same as the length direction of the separating roller (2), a cutter (6) is arranged on the separating roller (2), and the length direction of the cutter (6) is the same as the length direction of the separating roller (2), both ends of the supporting roller (3) are rotatably arranged on the frame (1), and the supporting roller (3) is located below the separating roller (2), and the driving motor (4) is installed on the frame (1) for driving the separating roller (2) and the supporting roller (3) to rotate, and the rotating directions of the separating roller (2) and the supporting roller (3) are opposite. The paper processed in the previous procedure of making the bag is transported between the separating roller (2) and the supporting roller (3). When the pre-tear line cutter (5) rotates with the separating roller (2) to be located below the separating roller (2), the pre-tear line cutter (5) cuts a pre-tear line on the tongue of the bag. When the cutter (6) rotates with the separating roller (2) to be located below the separating roller (2), the cutter (6) cuts off the waste material formed by the remaining part of the tongue of another bag at the bottom of the bag. A breaking plate (23) is provided on the separating roller (2). The rotation speed of the separating roller (2) is greater than the rotation speed of the traction roller in the previous procedure. When the breaking plate (23) rotates with the separating roller (2) to be pressed between the breaking plate (23) and the supporting roller (3), the paper is used to tear the paper to form a tongue at the part pre-punctured at the bag mouth in the previous procedure. A waste suction device (7) is provided on the support roller (3), and the waste suction device (7) is used to absorb the waste material cut by the cutter (6), and release the waste material when the waste suction device (7) rotates with the support roller (3) to be located below the support roller (3); The waste collection box (8) is located below the support roller (3), and the top of the waste collection box (8) is open and is used to collect waste dropped from the waste suction device (7); The waste guide barrel (9) is installed on the frame (1), and the waste dropped from the waste suction device (7) falls into the waste guide barrel (9) from the top of the waste guide barrel (9), and is discharged into the waste collection box (8) through the waste guide barrel (9) for collection; A cavity (10) is formed on the upper limit of the support roller (3), and a waste suction plate (11) is installed at the cavity (10). The waste suction plate (11) is provided with a plurality of waste suction holes (12) running through both sides thereof. An air extraction hole (13) is provided along the axial direction at one end of the support roller (3). The air extraction hole (13) is communicated with the cavity (10). One end of the support roller (3) is connected to an air extraction device through a rotary joint and an air suction pipe. The air extraction device extracts air in the cavity (10) to adsorb waste materials on the waste suction plate (11).

2. The sheet separating device for a bag making machine according to claim 1, characterized in that: A mounting block (14) is rotatably provided at each end of the separating roller (2). The mounting block (14) is provided on the frame (1) and forms a moving pair with the frame (1). An adjusting device for driving the mounting block (14) to slide up and down is provided on the mounting block (14). The mounting block (14) slides up and down relative to the frame (1) to adjust the distance between the separating roller (2) and the supporting roller (3).

3. The sheet separating device for a bag making machine according to claim 2, characterized in that: The adjusting device includes a screw rod (15), the bottom end of the screw rod (15) is rotatably connected to the mounting block (14), the top end of the screw rod (15) passes through the frame (1) and is provided with a nut, a spring (16) is sleeved on the screw rod (15), the top and bottom ends of the spring (16) are respectively in contact with the frame (1) and the mounting block (14), and when the nut is rotated, the screw rod (15) drives the mounting block (14) to slide up and down, and the spring (16) expands and contracts as the mounting block (14) moves up and down.

4. The sheet separating device for a bag making machine according to claim 1, characterized in that: A driving gear (17) is provided at one end of the support roller (3), a driven gear (18) is provided at one end of the spreading roller (2), the driving gear (17) and the driven gear (18) are meshed, and the driving motor (4) is connected to one end of the support roller (3).

5. The sheet separating device for a bag making machine according to claim 4, characterized in that: A driven pulley (19) is provided at one end of the support roller (3), a driving pulley (20) is provided on the output shaft of the drive motor (4), the driving pulley (20) and the driven pulley (19) are connected by a synchronous belt (21), and a tensioning pulley (22) is provided on the frame (1) for adjusting the tension of the synchronous belt (21).

6. The sheet separating device for a bag making machine according to claim 1, characterized in that: A rubber pad (24) is provided on the breaking pressure plate (23).

Images