Paper bag punching structure

Abstract

The utility model aims at providing a paper bag punch structure, it includes punch assembly and suction subassembly, punch assembly includes upper pole and lower pole, is provided with cutting knife on lower pole, is set up cutting groove in upper pole, the upper pole is used for with lower pole axis parallelly opposite direction rotation, so that cutting knife cycles cut into cutting groove, suction subassembly includes suction pipe and exhaust fan, the suction cavity is set up in the suction cavity along the axial direction in the upper pole, the suction cavity is linked together with cutting groove, the suction pipe is coaxial heart rotation setting in the suction cavity, the exhaust fan is connected with the suction pipe. Thus, when the upper pole, lower pole opposite direction rotation, make cutting knife cycles cut into cutting groove, thereby to the paper material hole cutting to form the broken material, the broken material is collected through the suction cavity, the suction pipe and draws, avoids the broken material to accumulate in the production machine table below.

Description

Technical Field

[0001] This utility model relates to the technical field of bag making machines, and in particular to a paper bag punching structure. Background Technology

[0002] Paper bag making machines can continuously complete the process from raw material input to finished product formation in the same flow, exhibiting a high level of automation. Based on raw materials, they can be divided into roll-fed paper bag making machines and sheet-fed paper bag making machines. Roll-fed paper bag making machines use rolls of paper as raw material and can produce handle-less or handle-equipped square-bottomed and pointed-bottomed paper bags in one pass; sheet-fed paper bag making machines use single sheets of paper as raw material and are commonly used for processing mid- to high-end paper bags.

[0003] During the production process of paper bag machines, holes need to be drilled in the paper material to ensure that the holes can be formed at the designated positions on the paper bag. For example, Chinese patent document CN212266843U discloses an online automatic hole-opening device for a paper bag machine, which includes a lower rod and an upper rod. The upper rod is located above the lower rod, and a lockable upper knife base is sleeved on the upper rod. An upper knife is fixedly connected to one side of the circumference of the lockable upper knife base by bolts. A cutter head is installed on the side of the upper knife opposite to the lockable upper knife base. A connecting hole is opened on the side of the lockable upper knife base near the upper knife. A lower knife base is sleeved on the lower rod. The lower rod drives the lower knife base to rotate, thereby moving the paper bag. The upper rod drives the lockable upper knife base to rotate, and the lockable upper knife base drives the upper knife and cutter head to rotate, and the cutter head opens the paper bag.

[0004] However, existing punching devices have been found to have the following shortcomings in practical use: after the cutter head cuts the paper, the resulting scraps fall directly below the conveyor belt. Due to the large daily output of paper bags, this leads to excessive accumulation of scraps, requiring regular cleaning. Therefore, to address these shortcomings, the paper bag punching structure of this application is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a paper bag punching structure that can simultaneously cut holes in paper and remove scraps in a timely manner.

[0006] The objective of this utility model is achieved through the following technical solution: A paper bag punching structure, comprising: A punching assembly, comprising an upper rod and a lower rod, wherein a cutter is provided on the lower rod, and a cutting groove is formed on the upper rod; the upper rod is configured to rotate in opposite directions parallel to the axis of the lower rod, so that the cutter cyclically cuts into the cutting groove; and A suction assembly, comprising a suction pipe and a suction fan, wherein a suction chamber is provided axially inside the upper rod, the suction chamber is connected to the groove, the suction pipe is rotatably disposed coaxially within the suction chamber, and the suction fan is connected to the suction pipe.

[0007] Optionally, the paper bag punching structure further includes a support base, on which the upper rod and the lower rod are rotatably mounted, and on which the exhaust pipe is mounted.

[0008] Optionally, a slide block is slidably disposed on the support base, and a stud is screwed onto the support base. The stud is rotatably connected to the slide block, and the upper rod is rotatably disposed on the slide block. The slide block is used to drive the upper rod closer to or away from the lower rod.

[0009] Optionally, the slide is provided with a guide post, which passes through the support base.

[0010] Optionally, the inner wall of the exhaust cavity is provided with a stepped groove, and a stepped block is provided at one end of the exhaust pipe located in the exhaust cavity. A thrust ball bearing is provided between the stepped block and the stepped groove.

[0011] Optionally, a sleeve is slidably disposed on the exhaust pipe, the sleeve is adjustablely disposed on the support base, and an elastic element is disposed between the sleeve and the exhaust pipe. The elastic element is used to push the exhaust pipe so that the stepped groove and the stepped block together clamp the thrust ball bearing.

[0012] Optionally, the elastic element is a spring.

[0013] Optionally, a limiting groove is provided on the outer wall of the exhaust pipe, and a limiting protrusion is provided on the sleeve, the limiting protrusion being adapted to slide within the limiting groove.

[0014] Optionally, a gear is provided on the upper rod and the lower rod respectively, and the two gears mesh with each other.

[0015] Compared with the prior art, the present invention has at least the following advantages: This utility model discloses a paper bag punching structure, including a punching assembly and a suction assembly. The punching assembly includes an upper rod and a lower rod. A cutter is provided on the lower rod, and a cutting groove is formed on the upper rod. When the upper rod rotates in opposite directions parallel to the axis of the lower rod, the cutter cyclically cuts into the cutting groove. The suction assembly includes an exhaust pipe and an exhaust fan. An exhaust chamber is formed along the axial direction inside the upper rod, and the exhaust chamber is connected to the cutting groove. The exhaust pipe is rotatably disposed coaxially within the exhaust chamber, and the exhaust fan is connected to the exhaust pipe. Thus, when the upper and lower rods rotate in opposite directions, causing the cutter to cyclically cut into the cutting groove, thereby punching holes in the paper to form scraps, the scraps are extracted and collected through the exhaust chamber and exhaust pipe, preventing the scraps from accumulating below the production machine. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the perforation structure of a paper bag according to one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the paper bag punching structure from another angle; Figure 3 for Figure 1 A cross-sectional schematic diagram of the perforated structure of the paper bag shown; Figure 4 for Figure 1 A cross-sectional view of the perforated paper bag structure from another angle; Figure 5 for Figure 1 A cross-sectional schematic diagram of another state of the perforated paper bag structure shown; Figure 6 for Figure 1 A cross-sectional schematic diagram of another state of the perforated paper bag structure shown.

[0018] Explanation of reference numerals in the attached figures: 10. Paper bag punching structure; 100. Punching assembly; 200. Suction assembly; 110. Upper rod; 120. Lower rod; 130. Cutter; 111. Groove; 210. Exhaust pipe; 112. Exhaust chamber; 300. Support base; 410. Slide; 420. Stud; 430. Guide post; 113. Step groove; 220. Step block; 230. Thrust ball bearing; 240. Sleeve; 250. Elastic element; 211. Limiting groove; 241. Limiting protrusion; 140. Gear. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0020] like Figures 1 to 6 As shown, a paper bag punching structure 10 includes a punching assembly 100 and a suction assembly 200. The punching assembly 100 includes an upper rod 110 and a lower rod 120. A cutter 130 is provided on the lower rod 120. A cutting groove 111 is provided on the upper rod 110. When the upper rod 110 rotates in opposite directions parallel to the axis of the lower rod 120, the cutter 130 is cyclically cut into the cutting groove 111. The suction assembly 200 includes a suction pipe 210 and a fan. A suction chamber 112 is provided axially inside the upper rod 110. The suction chamber 112 is connected to the cutting groove 111. The suction pipe 210 is rotatably disposed coaxially in the suction chamber 112. The fan is connected to the suction pipe 210.

[0021] It should be noted that the central axes of the upper rod 110 and the lower rod 120 are parallel to each other, and the upper rod 110 and the lower rod 120 are close to each other. The upper rod 110 and the lower rod 120 can be directly connected or have a certain gap between them. The upper rod 110 has an exhaust chamber 112 along its axial direction, and a groove 111 is also formed on the outer wall of the upper rod 110. A cutter 130 is fixedly installed on the outer wall of the lower rod 120 by screws, so that the position of the cutter 130 relative to the lower rod 120 can be adjusted according to actual needs. Thus, the upper rod 110 and the lower rod 120 are driven to rotate simultaneously by an external drive source such as a belt, and the rotation directions of the upper rod 110 and the lower rod 120 are opposite. Specifically, when the upper rod 110 rotates clockwise, the lower rod 120 rotates counterclockwise; when the upper rod 110 rotates counterclockwise, the lower rod 120 rotates clockwise. In this way, the upper rod 110 and the lower rod 120 rotate in opposite directions, allowing the cutter 130 to repeatedly cut into the slit 111. When the paper passes over the upper rod 110, the cutter 130 can perform hole-cutting operations on the paper. It should be noted that in actual paper bag processing, multiple paper bag punching structures 10 of this application are often configured. Each paper bag punching structure 10 can cut non-closed shapes on the paper, including but not limited to straight cuts, semi-circular cuts, elliptical cuts, square cuts, etc. Therefore, by setting multiple paper bag punching structures 10, and aligning the cutter 130 in each paper bag punching structure 10 with the paper, holes of a specific shape can be formed at designated positions on the paper by the cutter 130. As the paper holes are formed, the paper at the hole location is cut off by the cutter 130 to form scraps, and the paper bag punching structure 10 of this application can reliably collect the scraps. Specifically, the exhaust chamber 112 is connected to the cutting groove 111, and the exhaust pipe 210 is rotatably installed inside the exhaust chamber 112, extending from one end of the upper rod 110. Thus, when the drive source drives the upper rod 110 and the lower rod 120 to rotate in opposite directions, the exhaust pipe 210 can be fixed relative to the machine base. The exhaust pipe 210 is connected to an exhaust fan (not shown), and the exhaust fan draws through the exhaust pipe 210 to create a negative pressure in the exhaust chamber 112. In this way, when the cutter 130 cuts the paper to form scraps, the scraps can be collected from the cutting groove 111 through the exhaust chamber 112 and the exhaust pipe 210.

[0022] like Figure 1 As shown, in one embodiment, the paper bag punching structure 10 further includes a support base 300, with the upper rod 110 and the lower rod 120 rotatably mounted on the support base 300, and the exhaust pipe 210 mounted on the support base 300.

[0023] It should be noted that both the upper rod 110 and the lower rod 120 are rotatably mounted on the support base 300. For example, by fitting a ball bearing onto each end of the upper rod 110 and the lower rod 120 and fixing the ball bearings to the support base 300, the upper rod 110 and the lower rod 120 can rotate stably relative to the support base 300. Furthermore, it should be noted that the support base 300, as a structure supporting the upper rod 110 and the lower rod 120, can be arbitrarily deformed. For example, the support base 300 can be configured as two independent structures, with two support bases 300 fixing the ends of the upper rod 110 and the lower rod 120 respectively via bearings. This ensures that the upper rod 110 and the lower rod 120 can rotate stably in opposite directions. Furthermore, the support base 300 is used to be fixedly mounted on the machine base of the paper bag machine, allowing the paper material to pass around the side of the upper rod 110 closest to the lower rod 120.

[0024] like Figure 3 As shown, in one embodiment, a slide block 410 is slidably disposed on the support base 300, and a stud 420 is screwed onto the support base 300. The stud 420 is rotatably connected to the slide block 410. The upper rod 110 is rotatably disposed on the slide block 410, and the slide block 410 is used to drive the upper rod 110 to move closer to or away from the lower rod 120.

[0025] It should be noted that the above structure is designed to make the distance between the upper rod 110 and the lower rod 120 adjustable. The slide 410 can slide up and down relative to the support 300. It should be noted that when the support 300 is configured as two independent structures, there are also two slides 410, each slidably mounted on one of the two support 300s. The upper rod 110 is rotatably mounted on the two slides 410 via ball bearings. Furthermore, each of the two slides 410 is rotatably mounted with a stud 420, which is screwed to the two support 300s. Thus, by rotating the studs 420, the slide 410 can be adjusted to slide up and down along the support 300, thereby adjusting the distance between the upper rod 110 and the lower rod 120, ensuring that the cutter 130 reliably cuts into the cutting groove 111 to make a cut in the paper.

[0026] like Figure 1 As shown, in one embodiment, a guide post 430 is provided on the slide 410, and the guide post 430 passes through the support base 300.

[0027] It should be noted that, in order to ensure that the slide 410 can stably slide up and down along the support 300 and to prevent the slide 410 from rotating relative to the support 300, vertically distributed guide posts 430 are installed on the slide 410, and guide holes are opened in the support 300 so that the guide posts 430 fit through the guide holes. In one embodiment, two guide posts 430 are provided, and the two guide posts 430 are respectively located on opposite sides of the stud 420.

[0028] like Figure 3 As shown, in one embodiment, the inner wall of the exhaust cavity 112 is provided with a stepped groove 113, and the exhaust pipe 210 is provided with a stepped block 220 at one end of the exhaust cavity 112. A thrust ball bearing 230 is provided between the stepped block 220 and the stepped groove 113.

[0029] It should be noted that, in order to ensure that the upper rod 110 can rotate stably relative to the exhaust pipe 210, and to ensure that the exhaust chamber 112 is reliably connected to the exhaust pipe 210, two ball bearings are fitted on the outer wall of the exhaust pipe 210. Both ball bearings are tightly installed against the inner wall of the exhaust chamber 112 of the upper rod 110. Furthermore, a stepped block 220 is provided at the end of the exhaust pipe 210 located in the exhaust chamber 112. A thrust ball bearing is installed between the stepped block 220 and the stepped groove 113. Thus, applying tension to the exhaust pipe 210 clamps the thrust ball bearing 230 between the stepped block 220 and the stepped groove 113. This ensures that the upper rod 110 rotates stably relative to the exhaust pipe 210, while ensuring that the exhaust pipe 210 is connected to the exhaust chamber 112. In this way, the scrap material formed by the cutter 130 can be extracted from the exhaust chamber 112 through the exhaust pipe 210.

[0030] like Figure 2 and Figure 3 As shown, in one embodiment, a sleeve 240 is slidably disposed on the exhaust pipe 210. The sleeve 240 is adjustablely disposed on the support base 300. An elastic element 250 is disposed between the sleeve 240 and the exhaust pipe 210. The elastic element 250 is used to push the exhaust pipe 210 so that the stepped groove 113 and the stepped block 220 together clamp the thrust ball bearing 230.

[0031] It should be noted that, in order to ensure that the stepped block 220 can stably maintain the state of pressing against the thrust ball bearing 230, so that the scrap formed by the cutter 130 can be smoothly drawn from the exhaust chamber 112 into the exhaust pipe 210, and to improve the installation stability of the exhaust pipe 210, a sleeve 240 is fitted onto the exhaust pipe 210, and the sleeve 240 can be fixed to the support base 300 by screws. The elastic element 250 is fitted onto the exhaust pipe 210, and the elastic element 250 pushes against both the sleeve 240 and the exhaust pipe 210. Thus, under the elastic thrust of the elastic element 250, the exhaust pipe 210 tends to be drawn out of the exhaust chamber 112, ultimately allowing the stepped block 220 to reliably press against the thrust ball bearing 230. In this way, the support base 300, sleeve 240, elastic element 250, and exhaust pipe 210 form a relatively fixed structure. In one embodiment, the elastic element 250 is a helical spring.

[0032] like Figure 2 and Figure 3 As shown, in one embodiment, a limiting groove 211 is provided on the outer wall of the exhaust pipe 210, and a limiting protrusion 241 is provided on the sleeve 240. The limiting protrusion 241 is adapted to slide within the limiting groove 211.

[0033] It should be noted that, in order to prevent the exhaust pipe 210 from rotating relative to the sleeve 240, a limiting groove 211 distributed axially is provided on the outer wall of the exhaust pipe 210, and a limiting protrusion 241 is provided axially on the inner wall of the sleeve 240, so that the limiting protrusion 241 slides fitably within the limiting groove 211. In this way, the exhaust pipe 210 can only slide relative to the sleeve 240 axially, and will not rotate.

[0034] like Figure 1 and Figure 3 As shown, in one embodiment, a gear 140 is respectively provided on the upper rod 110 and the lower rod 120, and the two gears 140 mesh with each other.

[0035] It should be noted that the upper rod 110 and the lower rod 120 need to rotate synchronously in opposite directions to ensure that the cutter 130 accurately cuts into the cutting groove 111 with each revolution. Therefore, to ensure synchronous rotation of the upper rod 110 and the lower rod 120, a gear 140 is fitted onto each of the upper rod 110 and the lower rod 120. The two gears 140 mesh with each other. Thus, when the motor drives the gear 140 located on the lower rod 120, the upper rod 110 and the lower rod 120 can rotate synchronously in opposite directions. It should be noted that the outer diameter of the two gears 140 can be set according to actual needs, and the outer diameter of the upper rod 110 and the lower rod 120 can also be set according to actual needs, as long as it ensures that the cutter 130 can cyclically cut into the cutting groove 111.

[0036] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A perforated structure for a paper bag, characterized in that, include: A punching assembly, comprising an upper rod and a lower rod, wherein a cutter is provided on the lower rod and a cutting groove is provided on the upper rod, and the upper rod is configured to rotate in opposite directions parallel to the axis of the lower rod so that the cutter cyclically cuts into the cutting groove; and A suction assembly, comprising a suction pipe and a suction fan, wherein a suction chamber is provided axially inside the upper rod, the suction chamber is connected to the groove, the suction pipe is rotatably disposed coaxially within the suction chamber, and the suction fan is connected to the suction pipe.

2. The paper bag punching structure according to claim 1, characterized in that, The paper bag punching structure also includes a support base, on which the upper rod and the lower rod are rotatably mounted, and on which the exhaust pipe is mounted.

3. The paper bag punching structure according to claim 2, characterized in that, A slide block is slidably disposed on the support base, and a stud is screwed onto the support base. The stud is rotatably connected to the slide block, and the upper rod is rotatably disposed on the slide block. The slide block is used to drive the upper rod closer to or away from the lower rod.

4. The paper bag punching structure according to claim 3, characterized in that, The slide is provided with a guide post, which passes through the support base.

5. The paper bag punching structure according to claim 2, characterized in that, The inner wall of the exhaust cavity is provided with a stepped groove, and a stepped block is provided on one end of the exhaust pipe located in the exhaust cavity. A thrust ball bearing is provided between the stepped block and the stepped groove.

6. The paper bag punching structure according to claim 5, characterized in that, A sleeve is slidably disposed on the exhaust pipe, and the sleeve is adjustablely disposed on the support base. An elastic element is disposed between the sleeve and the exhaust pipe. The elastic element is used to push the exhaust pipe so that the stepped groove and the stepped block together clamp the thrust ball bearing.

7. The paper bag punching structure according to claim 6, characterized in that, The elastic element is a spring.

8. The paper bag punching structure according to claim 6, characterized in that, A limiting groove is provided on the outer wall of the exhaust pipe, and a limiting protrusion is provided on the sleeve. The limiting protrusion is adapted to slide within the limiting groove.

9. The paper bag punching structure according to claim 1, characterized in that, A gear is provided on the upper rod and the lower rod respectively, and the two gears mesh with each other.

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