Edge cutting device for degradable plastic packaging bag
By using a hydraulically driven lifting plate and rotating arm design, combined with the use of a buffer plate, the precision and appearance issues during the cutting of biodegradable plastic packaging bags are solved, achieving a high-precision cutting effect.
Patent Information
- Application Number
- CN202520478662.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-19
AI Technical Summary
When cutting biodegradable plastic packaging bags, the blade contacts the surface of the plastic bag, causing displacement, which affects the cutting accuracy and leaves irregular edges or burrs, affecting the product's appearance quality.
The hydraulic cylinder drives the lifting plate to move the cutting blade. The pressure plate presses the edge of the plastic bag tightly. Combined with the design of the rotating arm and the buffer plate, it ensures that the plastic bag remains taut during cutting. The cooperation of the rotating arm and the buffer plate prevents the plastic bag from tearing and improves the cutting accuracy.
It improves the cutting precision of biodegradable plastic packaging bags, prevents irregular edges and burrs from forming during the cutting process, and enhances the product's appearance quality.
Smart Images
Figure CN223877645U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to degradable plastic packaging bag processing technical field, concretely is a kind of edge cutting device of degradable plastic packaging bag. BACKGROUND
[0002] Degradable plastic packaging bag refers to the packaging bag made of degradable plastic, which can be gradually decomposed into small molecular compounds under natural environment or specific conditions through the action of microorganisms, light, heat, oxidation, etc., and ultimately return to nature.
[0003] When the degradable plastic bag is cut, the blade contacts the surface of the plastic bag, which is easy to cause the plastic bag to displace towards the blade, resulting in the cutting position deviating from the preset trajectory, thereby affecting the cutting precision, and irregular edges or burrs are left on the surface of the plastic bag, affecting the appearance quality of the product. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing an edge cutting device for degradable plastic packaging bags to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: an edge cutting device for degradable plastic packaging bags, comprising a processing seat, two groups of supporting rods are fixedly connected to the upper sides of the processing seat, a top plate is fixedly connected to the upper parts of the supporting rods, a hydraulic cylinder is fixedly connected to the upper part of the top plate, a lifting plate is fixedly connected to the power end of the hydraulic cylinder penetrating the top plate, a cutting blade is fixedly connected to the lower side of the lifting plate, two groups of connecting plates are fixedly connected to the front part of the lower side of the lifting plate, a rotating shaft is rotatably connected between the lower parts of the connecting plates, two groups of rotating arms are fixedly connected to the outer side of the rotating shaft, rotating pieces are rotatably connected to the outer side of the rotating arms, a pushing plate is fixedly connected to the lower part of the rotating piece, two groups of outer mounting rods are fixedly connected to the lower rear side of the lifting plate, an inner mounting rod is slidably connected in the inner part of the outer mounting rod, a pressing plate is fixedly connected to the bottom of the inner mounting rod, a lifting piece is fixedly connected to the upper part of the inner mounting rod, a first spring is fixedly connected between the lifting piece and the outer mounting rod, and the first spring is sleeved on the outer side of the inner mounting rod.
[0006] Preferably, fixed pieces are fixedly connected to the two sides of the rotating shaft penetrating the connecting plates, torsional springs are fixedly connected between the fixed pieces and the connecting plates, and the torsional springs are sleeved on the outer side of the rotating shaft.
[0007] Preferably, four groups of outer mounting blocks are fixedly connected to the lower outer side of the pushing plate, sliding rods are fixedly connected between the outer mounting blocks on the same side, inner mounting blocks are slidably connected to the outer side of the sliding rods, a buffer plate is fixedly connected to the lower part of the inner mounting block, second springs are fixedly connected between the inner mounting blocks and the outer mounting blocks on the two sides, and the second springs are sleeved on the outer side of the sliding rods.
[0008] Preferably, the lower part of the pressing plate is provided with a plurality of horizontal tooth grooves.
[0009] Preferably, the upper part of the processing seat is provided with a cutting groove opposite the cutting blade.
[0010] Preferably, the two sides of the lifting plate are fixedly connected with two groups of lugs, and the lugs are slidingly connected to the outer side of the supporting rod.
[0011] Compared with the prior art, the utility model has the advantages that:
[0012] 1、The utility model discloses a plastic bag cutting device, which comprises a processing seat, a supporting rod is fixedly connected to the upper part of the processing seat, a top plate is fixedly connected to the outer side of the supporting rod, a hydraulic cylinder is fixedly connected to the top plate, a lifting plate is fixedly connected to the lower part of the hydraulic cylinder, a cutting blade is fixedly connected to the lower part of the lifting plate, a connecting plate is fixedly connected to the outer side of the cutting blade, a rotating shaft is fixedly connected to the lower part of the connecting plate, a rotating arm is fixedly connected to the lower part of the rotating shaft, a rotating piece is fixedly connected to the lower part of the rotating arm, a push plate is fixedly connected to the lower part of the rotating arm, an outer mounting rod is fixedly connected to the lower part of the push plate, an inner mounting rod is fixedly connected to the lower part of the outer mounting rod, a lifting piece is fixedly connected to the lower part of the inner mounting rod, a first spring is fixedly connected to the lower part of the lifting piece, a pressing plate is fixedly connected to the lower part of the lifting plate, a plurality of tooth grooves are formed in the lower part of the pressing plate, a fixing piece is fixedly connected to the lower part of the pressing plate, a torsional spring is fixedly connected to the lower part of the fixing piece, an outer mounting block is fixedly connected to the lower part of the pressing plate, an inner mounting block is fixedly connected to the lower part of the outer mounting block, a sliding rod is fixedly connected to the lower part of the inner mounting block, a second spring is fixedly connected to the lower part of the sliding rod, and a buffer plate is fixedly connected to the lower part of the second spring.
[0013] 2、The utility model discloses a plastic bag cutting device, which comprises a processing seat, a supporting rod is fixedly connected to the upper part of the processing seat, a top plate is fixedly connected to the outer side of the supporting rod, a hydraulic cylinder is fixedly connected to the top plate, a lifting plate is fixedly connected to the lower part of the hydraulic cylinder, a cutting blade is fixedly connected to the lower part of the lifting plate, a connecting plate is fixedly connected to the outer side of the cutting blade, a rotating shaft is fixedly connected to the lower part of the connecting plate, a rotating arm is fixedly connected to the lower part of the rotating shaft, a rotating piece is fixedly connected to the lower part of the rotating arm, a push plate is fixedly connected to the lower part of the rotating arm, an outer mounting rod is fixedly connected to the lower part of the push plate, an inner mounting rod is fixedly connected to the lower part of the outer mounting rod, a lifting piece is fixedly connected to the lower part of the inner mounting rod, a first spring is fixedly connected to the lower part of the lifting piece, a pressing plate is fixedly connected to the lower part of the lifting plate, a plurality of tooth grooves are formed in the lower part of the pressing plate, a fixing piece is fixedly connected to the lower part of the pressing plate, a torsional spring is fixedly connected to the lower part of the fixing piece, an outer mounting block is fixedly connected to the lower part of the pressing plate, an inner mounting block is fixedly connected to the lower part of the outer mounting block, a sliding rod is fixedly connected to the lower part of the inner mounting block, a second spring is fixedly connected to the lower part of the sliding rod, and a buffer plate is fixedly connected to the lower part of the second spring. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is the first perspective three-dimensional structure schematic diagram of the utility model;
[0015] Fig. 2 It is the second perspective partial structure enlarged view of the utility model;
[0016] Fig. 3 It is the third perspective outer mounting rod structure section view of the utility model.
[0017] In the drawing: 1, processing seat; 2, supporting rod; 3, top plate; 4, hydraulic cylinder; 5, lifting plate; 6, cutting blade; 7, connecting plate; 8, rotating shaft; 9, rotating arm; 10, rotating piece; 11, push plate; 12, outer mounting rod; 13, inner mounting rod; 14, lifting piece; 15, first spring; 16, pressing plate; 17, tooth groove; 18, fixing piece; 19, torsional spring; 20, outer mounting block; 21, inner mounting block; 22, sliding rod; 23, second spring; 24, buffer plate; 25, lug; 26, cutting groove. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0019] Please refer to Figs. 1-3 The utility model provides a kind of technical solutions: a kind of edge cutting device of degradable plastic packaging bag, including processing seat 1, two groups of support rod 2 are fixedly welded on the upper portion both sides of processing seat 1, support rod 2 upper portion is fixedly welded with top plate 3, flange is installed with hydraulic cylinder 4 on the upper portion of top plate 3, the power end of hydraulic cylinder 4 is penetrated top plate 3 and is installed with lifting plate 5 by screw thread, cutting blade 6 is installed with screw thread in the middle of the lower side of lifting plate 5, packaging bag is placed on processing seat 1, hydraulic cylinder 4 drives lifting plate 5 to move downward, and edge cutting treatment is carried out to packaging bag by cutting blade 6, two groups of connecting plate 7 are fixedly welded on the lower side front of lifting plate 5, rotating shaft 8 is rotatably installed between the lower portion of connecting plate 7, two groups of rotating arm 9 are fixedly welded on the outside of rotating shaft 8, rotating piece 10 is rotatably installed on the outside of rotating arm 9, push plate 11 is fixedly welded on the lower portion of rotating piece 10, two groups of outer installation rod 12 are fixedly welded on the lower portion rear of lifting plate 5, inner installation rod 13 is slidably installed in outer installation rod 12, pressure plate 16 is fixedly welded on the bottom of inner installation rod 13, lifting piece 14 is fixedly welded on the upper portion of inner installation rod 13, first spring 15 is fixedly welded between lifting piece 14 and outer installation rod 12, when lifting plate 5 moves downward, pressure plate 16 first contacts plastic bag edge, and plastic bag edge is pressed tightly, lifting plate 5 continues to move downward, and inner installation rod 13 moves upward along outer installation rod 12, first spring 15 is stretched by lifting piece 14, to ensure that pressure plate 16 gives plastic bag enough pressure, push plate 11 contacts plastic bag internal area, lifting plate 5 continues to move downward, to drive rotating shaft 8 to rotate, so that rotating arm 9 rotates to horizontal direction, rotating arm 9 lower portion rotates around rotating piece 10, to ensure that push plate 11 keeps horizontal direction, to drive plastic bag internal to move away from cutting blade 6, to ensure that plastic bag keeps tight when cutting blade 6 contacts plastic bag;
[0020] The rotating shaft 8 is fixedly welded with a fixed sheet 18 penetrating through the connecting plate 7 on both sides, a torsion spring 19 is fixedly welded between the fixed sheet 18 and the connecting plate 7, the torsion spring 19 is sleeved outside the rotating shaft 8, the rotating shaft 8 is driven to rotate by the torsion spring 19, so that the rotating arm 9 keeps a certain inclination angle, and the rotating arm 9 is conveniently rotated away from the cutting blade 6 when the lifting plate 5 moves downward; four groups of outer mounting blocks 20 are fixedly welded on the outer side of the lower part of the pushing plate 11, sliding rods 22 are fixedly welded between the same side outer mounting blocks 20, the sliding rods 22 slide outside the inner mounting blocks 21, the inner mounting blocks 21 are fixedly welded with buffer plates 24 at the lower part, the inner mounting blocks 21 are fixedly welded with second springs 23 between the two sides and the outer mounting blocks 20, the second springs 23 are sleeved outside the sliding rods 22, the buffer plates 24 are in direct contact with the plastic bag and push the plastic bag to move away from the cutting blade 6, when the rotating angle of the rotating arm 9 is too large, the inner mounting blocks 21 can move along the sliding rods 22, so that the buffer plates 24 are dislocated with the pushing plate 11, the buffer plates 24 are prevented from moving too far to damage the plastic bag, and the second springs 23 can ensure that the buffer plates 24 have enough pulling force on the plastic bag; a plurality of tooth grooves 17 in the horizontal direction are formed in the lower part of the pressing plate 16, so that the plastic bag edge can be conveniently pressed, and the plastic bag edge is prevented from being separated from the pressing plate 16; a cutting groove 26 opposite to the cutting blade 6 is formed in the upper part of the processing seat 1, the cutting blade 6 can be inserted into the cutting groove 26, and the cutting effect is improved; two groups of lugs 25 are fixedly welded on the two sides of the lifting plate 5, the lugs 25 are slidably connected to the outer side of the supporting rod 2, and the two sides of the lifting plate 5 are balanced.
[0021] Working principle: when the utility model is used, the packaging bag is placed on the processing seat 1, the hydraulic cylinder 4 drives the lifting plate 5 to move downward, the pressing plate 16 first contacts the plastic bag edge and presses the plastic bag edge, the lifting plate 5 continues to move downward, the inner mounting rod 13 moves upward along the outer mounting rod 12, the first spring 15 is stretched through the lifting piece 14, the pressing plate 16 is ensured to give the plastic bag enough pressure, the pushing plate 11 contacts the internal region of the plastic bag, the lifting plate 5 continues to move downward, thereby driving the rotating shaft 8 to rotate, the rotating arm 9 rotates in the horizontal direction, the rotating arm 9 rotates around the rotating sheet 10 at the lower part, the pushing plate 11 is ensured to keep in the horizontal direction, thereby pushing the internal region of the plastic bag to move away from the cutting blade 6, and the plastic bag is kept tight when the cutting blade 6 contacts the plastic bag.
[0022] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0023] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. A trimming device for degradable plastic packaging bags, comprising a processing seat (1), characterized in that: The upper two sides of the processing seat (1) are fixedly connected with two groups of supporting rods (2), the upper part of the supporting rod (2) is fixedly connected with a top plate (3), the upper part of the top plate (3) is fixedly connected with a hydraulic cylinder (4), the power end of the hydraulic cylinder (4) penetrates the top plate (3) and is fixedly connected with a lifting plate (5), the lower side of the lifting plate (5) is fixedly connected with a cutting blade (6), the lower side of the lifting plate (5) is fixedly connected with two groups of connecting plates (7), the rotating shaft (8) is rotatably connected between the lower parts of the connecting plates (7), the outer side of the rotating shaft (8) is fixedly connected with two groups of rotating arms (9), the rotating arms (9) are rotatably connected with rotating plates (10), the lower part of the rotating plate (10) is fixedly connected with a pushing plate (11), the rear lower part of the lifting plate (5) is fixedly connected with two groups of outer mounting rods (12), the inner mounting rod (13) is slidably connected in the outer mounting rod (12), the bottom of the inner mounting rod (13) is fixedly connected with a pressing plate (16), the upper part of the inner mounting rod (13) is fixedly connected with a lifting plate (14), the first spring (15) is fixedly connected between the lifting plate (14) and the outer mounting rod (12), and the first spring (15) is sleeved on the outer side of the inner mounting rod (13).
2. The trimming device of degradable plastic packaging bag according to claim 1, characterized in that: The rotating shaft (8) penetrates the connecting plate (7) and is fixedly connected with a fixed plate (18) on both sides, the torsional spring (19) is fixedly connected between the fixed plate (18) and the connecting plate (7), and the torsional spring (19) is sleeved on the outer side of the rotating shaft (8).
3. The device for trimming edges of degradable plastic packaging bags according to claim 1, characterized in that: The lower outer side of the pushing plate (11) is fixedly connected with four groups of outer mounting blocks (20), the same side of the outer mounting blocks (20) is fixedly connected with a sliding rod (22), the outer side of the sliding rod (22) is slidably connected with an inner mounting block (21), the lower part of the inner mounting block (21) is fixedly connected with a buffer plate (24), the second spring (23) is fixedly connected between the two sides of the inner mounting block (21) and the outer mounting block (20), and the second spring (23) is sleeved on the outer side of the sliding rod (22).
4. The device for trimming edges of degradable plastic packaging bags according to claim 1, characterized in that: The lower part of the pressing plate (16) is provided with a plurality of tooth grooves (17) in the horizontal direction.
5. The device for trimming edges of degradable plastic packaging bags according to claim 1, characterized in that: The upper part of the processing seat (1) is provided with a cutting groove (26) opposite to the cutting blade (6).
6. The device for trimming edges of degradable plastic packaging bags according to claim 1, characterized in that: The two sides of the lifting plate (5) are fixedly connected with two groups of ears (25), and the ears (25) are slidably connected to the outer side of the supporting rod (2).