Bag cutting machine
By using technical means such as cutting platforms, press rollers and hydraulic rods in the bag cutting machine, the problems of offset and uneven cuts during the cutting process of woven bags are solved, and a higher quality cutting effect is achieved.
Patent Information
- Application Number
- CN202421052258.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
During the cutting process, woven bags are prone to offset or uneven cuts, which affects the cutting quality.
A bag cutting machine is designed, including a cutting assembly above the cutting platform, the first and second pressing rollers and a device for driving the pressing rollers to be displaced in the vertical direction to ensure that the woven bag is squeezed before cutting. Press flat and tightly pressed on the cutting platform, and cut with a hydraulic rod and a cutting knife.
It effectively avoids the deviation and uneven cut of the woven bag during the cutting process, and improves the cutting quality and flatness.
Smart Images
Figure CN222271475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of woven bag processing, in particular to a bag cutting machine. Background Art
[0002] Woven bags, also known as snakeskin bags, are a type of plastic bag used for packaging. Their raw materials are generally various chemical plastic raw materials such as polyethylene and polypropylene. They are extruded and stretched into flat wires, and then woven, knitted and made into bags.
[0003] When processing woven bags, it is necessary to cut the large roll of woven bags on the roller into bags of specified size. During the cutting process, if the cut part of the woven bag cannot be close to the cutting platform, the woven bag is prone to deviation or uneven cut, which seriously affects the cutting quality. Utility Model Content
[0004] The utility model aims to provide a bag cutting machine, which can make the cut part of the woven bag close to the cutting platform, so as to avoid the phenomenon that the woven bag is offset or the cutting mouth is uneven.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A bag cutting machine comprises a cutting platform with a notch on the top surface, and a cutting assembly arranged above the cutting platform; in addition, the bag cutting machine also comprises a first pressing roller and a second pressing roller arranged on the cutting platform and located below the cutting assembly, and a first driving device and a second driving device respectively driving the first pressing roller and the second pressing roller to move in a vertical direction; the notch is located between the first pressing roller and the second pressing roller.
[0007] Preferably, the cutting assembly includes a support frame arranged on the cutting platform, a hydraulic rod arranged on the support frame, and a cutting knife arranged at the bottom end of the hydraulic rod.
[0008] Preferably, the first driving device includes first sliders arranged at both ends of the first pressure roller, and first vertical slide rails arranged on the cutting platform and slidingly matched with the two first sliders respectively; the two ends of the first pressure roller are rotatably connected to the two first sliders respectively.
[0009] Preferably, the second pressure roller includes second sliders arranged at both ends of the second pressure roller, and second vertical slide rails arranged on the cutting platform and slidingly matched with the two second sliders respectively; the two ends of the second pressure roller are rotatably connected to the two second sliders respectively.
[0010] Preferably, the bag cutting machine further comprises two limit plates arranged in parallel on the top surface of the cutting platform.
[0011] Preferably, a third sliding block is provided at the bottom end of the limiting plate, and a horizontal sliding groove slidably matched with the third sliding block is provided on the top surface of the cutting platform.
[0012] Preferably, the bag cutting machine further comprises a limit block magnetically connected to the top surface of the cutting platform and the limit plate respectively.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] By arranging the first pressing roller and the second pressing roller on both sides of the notch, the first pressing roller and the second pressing roller can press the woven bag flat during the transmission of the woven bag, thereby improving the flatness of the woven bag; by arranging the first driving device and the second driving device for driving the first pressing roller and the second pressing roller to move in the vertical direction respectively, the first pressing roller and the second pressing roller can be moved downward during cutting until the woven bag is tightly pressed against the cutting platform, because before cutting, the second pressing roller has already squeezed the woven bag at the cutting position flat, and on this basis, when the two pressing rollers press the woven bag tightly against the cutting platform, it can ensure that the woven bag between the two pressing rollers (i.e., the cutting position) is in close contact with the cutting platform, thereby ensuring that the cutting position will not be offset or the blade will not be uneven during the cutting process, thereby improving the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic cross-sectional structure diagram of the utility model in the front view direction;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure in the front view direction when the cutting assembly of the utility model is working;
[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in the top view direction;
[0018] Figure 4 This is a schematic diagram of the structure of the first pressing roller in the utility model when viewed from the right;
[0019] In the figure: 100-cutting platform, 110-first pressure roller, 120-second pressure roller, 130-support frame, 140-hydraulic rod, 150-cutting knife, 160-first slider, 170-first vertical slide rail, 180-second slider, 190-second vertical slide rail, 260-limiting plate, 280-horizontal slide groove, 290-limiting block. DETAILED DESCRIPTION
[0020] Example 1
[0021] A bag cutting machine, such as Figure 1 and Figure 2As shown, it includes a cutting platform 100 with a notch on the top surface (not shown in the prior art), and a cutting assembly arranged above the cutting platform 100; further, as Figure 1 and Figure 2 As shown, the cutting assembly includes a U-shaped support frame 130 disposed on the cutting platform 100, a hydraulic rod 140 disposed on the support frame 130, and a cutting knife 150 disposed at the bottom end of the hydraulic rod 140, and the cutting knife 150 is disposed just above the notch. In addition, the bag cutting machine also includes a first pressing roller 110 and a second pressing roller 120 disposed on the cutting platform 100 and located below the cutting assembly, and a first driving device and a second driving device that respectively drive the first pressing roller 110 and the second pressing roller 120 to move in the vertical direction; the notch is located between the first pressing roller 110 and the second pressing roller 120.
[0022] Working principle: Pull out the woven bag on the roller on the right side of the cutting platform 100, and then continue to pull the free end of the woven bag so that the woven bag passes through the second pressure roller 120 and the first pressure roller 110 in turn, that is, moves to the left. When it is pulled to the left of the first pressure roller 110, start the first drive device and the second drive device to move the two pressure rollers downward until the second pressure roller 120 and the first pressure roller 110 are in contact with the woven bag. The first pressure roller 110 and the second pressure roller 120 can rotate, and the woven bag can be conveyed during the rotation. At the same time, the height of the two pressure rollers can exert a downward squeezing force on the woven bag, and the woven bag can be flattened under the action of the squeezing force. When the cutting part of the woven bag moves between the two pressure rollers, stop pulling the woven bag. At this time, under the action of the first drive device and the second drive device, the two pressure rollers are moved downward until the woven bag is tightly pressed against the cutting platform 100, as shown in FIG. Figure 2 As shown, under the effect of tight compression, the woven bag is difficult to pull. At this moment, start the hydraulic rod 140 to move the cutting knife 150 downward to cut the woven bag.
[0023] In addition, by providing the first driving device and the second driving device, the heights of the two pressing rollers can be adjusted to match the flattening requirements of woven bags of different thicknesses.
[0024] Furthermore, after the woven bag is cut, the free end of the woven bag is located between the first pressing roller 110 and the second pressing roller 120. If a slight curling appears on the free end of the woven bag, when the height of the first pressing roller 110 is low, it is difficult for the woven bag to pass under the first pressing roller 110. At this time, the first driving device is started to move the first pressing roller 110 upward, and the staff pulls the free end of the woven bag between the two pressing rollers to the left until it is pulled to the left of the first pressing roller 110. Thereafter, under the action of the first driving device, the first pressing roller 110 is moved downward until its bottom end is flush with the second pressing roller 120.
[0025] Further, under the effect of Example 1, if Figure 1-4 As shown, the first driving device includes a first slider 160 disposed at both ends of the first pressure roller 110, and a first vertical slide rail 170 disposed on the cutting platform 100 and slidingly matched with the two first sliders 160; the two ends of the first pressure roller 110 are rotatably connected with the two first sliders 160. In this solution, the first vertical slide rail 170 is an electric slide rail with a self-locking function, which is a prior art, so as to achieve the purpose of starting and stopping at any time, thereby achieving the purpose of limiting the position of the first slider 160. Specifically, when it is necessary to adjust the height of the first slider 160, the two first vertical slide rails 170 are made to work synchronously, thereby making the two first sliders 160 synchronously displace vertically, thereby adjusting the height of the first pressure roller 110 between the two first sliders 160.
[0026] Further, under the effect of Example 1, if Figure 1-4 As shown, the second pressure roller 120 includes a second slider 180 disposed at both ends of the second pressure roller 120, and a second vertical slide rail 190 disposed on the cutting platform 100 and slidably matched with the two second sliders 180; the two ends of the second pressure roller 120 are rotatably connected with the two second sliders 180. In this solution, the second vertical slide rail 190 is an electric slide rail with a self-locking function, which is a prior art, so as to achieve the purpose of starting and stopping at any time, thereby achieving the purpose of limiting the second slider 180. Specifically, when it is necessary to adjust the height of the second slider 180, the two second vertical slide rails 190 are made to work synchronously, thereby making the two second sliders 180 synchronously displace vertically, thereby adjusting the height of the second pressure roller 120 between the two second sliders 180.
[0027] Furthermore, in order to ensure that the woven bag does not deviate during the entire transmission process, such as Figure 1 and Figure 3 As shown, the bag cutting machine further includes two limit plates 260 arranged in parallel on the top surface of the cutting platform 100. In specific implementation, the two limit plates 260 are respectively arranged on the two long sides of the woven bag. When the staff pulls the woven bag, it is ensured that the two long sides of the woven bag always move along the inner walls of the two limit plates 260, thereby ensuring that the woven bag will not deviate during the transmission process.
[0028] Furthermore, in order to allow the two limiting plates 260 to limit the woven bags of different widths, as Figure 1 and Figure 3As shown, a third slider (not shown in the prior art) is provided at the bottom of the limit plate 260, and a horizontal slide groove 280 that is slidably matched with the third slider is provided on the top surface of the cutting platform 100. In this solution, the two limit plates 260 are moved toward or away from each other according to the width of the woven bag. During the movement, the third slider slides in the horizontal slide groove 280 to improve the smoothness of the movement of the limit plate 260, and at the same time, the limit plate 260 can be limited to ensure that it always moves in a direction perpendicular to the conveying direction of the woven bag.
[0029] Furthermore, in order to limit the two limiting plates 260, as shown in FIG. Figure 1 and Figure 3 As shown, the bag cutting machine further includes a limit block 290 magnetically connected to the top surface of the cutting platform 100 and the limit plate 260. In this solution, when the two limit plates 260 are moved to the two long sides of the woven bag, the limit blocks 290 are respectively set on the side where the two limit plates 260 are away from each other. At this time, the limit blocks 290 are magnetically linked to the limit plates 260 and the cutting platform 100, respectively, and then the two limit plates 260 are limited to avoid relative displacement between the two limit plates 260, resulting in a limit failure.
[0030] In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "longitudinal", "horizontal" and the like indicate the orientation or position relationship based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent.
Claims
1. A bag cutting machine, comprising a cutting platform (100) with a notch on the top surface, and a cutting assembly arranged above the cutting platform (100); characterized in that: It also comprises a first pressing roller (110) and a second pressing roller (120) which are arranged on the cutting platform (100) and located below the cutting assembly, and a first driving device and a second driving device which respectively drive the first pressing roller (110) and the second pressing roller (120) to move in a vertical direction; the notch is located between the first pressing roller (110) and the second pressing roller (120).
2. A bag cutting machine according to claim 1, characterized in that: The cutting assembly comprises a support frame (130) arranged on the cutting platform (100), a hydraulic rod (140) arranged on the support frame (130), and a cutting knife (150) arranged at the bottom end of the hydraulic rod (140).
3. A bag cutting machine according to claim 1, characterized in that: The first driving device comprises first sliding blocks (160) arranged at both ends of the first pressing roller (110), and first vertical slide rails (170) arranged on the cutting platform (100) and respectively slidably matched with the two first sliding blocks (160); the two ends of the first pressing roller (110) are respectively rotatably connected to the two first sliding blocks (160).
4. A bag cutting machine according to claim 1, characterized in that: The second pressing roller (120) comprises second sliding blocks (180) arranged at both ends of the second pressing roller (120), and second vertical slide rails (190) arranged on the cutting platform (100) and respectively slidably matched with the two second sliding blocks (180); the two ends of the second pressing roller (120) are respectively rotatably connected to the two second sliding blocks (180).
5. The bag cutting machine according to claim 1, characterized in that: It also includes two limiting plates (260) arranged in parallel on the top surface of the cutting platform (100).
6. A bag cutting machine according to claim 5, characterized in that: A third sliding block is provided at the bottom end of the limiting plate (260), and a horizontal sliding groove (280) that is slidably matched with the third sliding block is provided on the top surface of the cutting platform (100).
7. A bag cutting machine according to claim 6, characterized in that: It also includes a limiting block (290) which is magnetically connected to the top surface of the cutting platform (100) and the limiting plate (260) respectively.