Point breaking type plastic bag high-speed double-station breaking mechanism

Abstract

The utility model relates to the technical field of plastic bag production, in particular to a spot-breaking type plastic bag high-speed double-station breaking mechanism which comprises a machine body, a material conveying device is arranged in the middle of the machine body, and a double-station material breaking device is rotationally arranged outside the material conveying device. A feeding device and a receiving device which are matched with the conveying device are respectively arranged at the front part and the rear part of the machine body, and a feeding driving device and a receiving driving device which are used for driving the feeding device and the receiving device are respectively arranged at the front part and the rear part of the machine body. The spot-breaking type plastic bags on the front side and the rear side of the spot-breaking line of the spot-breaking type plastic bag are clamped by the feeding device and the conveying device respectively, the rotating breaking shaft is high in speed and even in force application, and the front breaking shaft cannot tear the plastic bag when the spot-breaking line of the spot-breaking type plastic bag is broken. Meanwhile, due to the fact that the speed of the feeding device is larger than that of the material conveying device, parts of the two plastic bags can be overlapped together, and follow-up packaging is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, in particular to a point-breaking type high-speed double-station breaking mechanism for plastic bags. Background Art

[0002] People often use disposable plastic bags, disposable fresh-keeping bags and other disposable plastic bags in their daily lives. Common disposable plastic bags include vest bags, drawstring bags and the like. Disposable plastic bags are usually stacked or rolled. Stacked plastic bags are multiple disposable plastic bags placed in a stack; rolled plastic bags are multiple interconnected point-break plastic bags rolled into a roll. A point-break line is set between two adjacent plastic bags of the point-break plastic bag. The point-break line refers to the puncture point connecting the two plastic bags and looks like a dotted line. When using a rolled plastic bag, consumers need to tear off the next plastic bag along the point-break line. If the force is uneven when tearing, the plastic bag is easily torn. Therefore, the disconnected rolled plastic bag came into being.

[0003] Disconnected roll plastic bags refer to multiple independent plastic bags partially overlapped and then rolled into a roll. Since each plastic bag is independent of each other, consumers do not need to tear it by hand when using it. However, during production, manufacturers need to tear apart multiple interconnected plastic bags with broken lines before rolling them. Therefore, there is an urgent need for a high-speed plastic bag disconnection device to tear apart multiple interconnected disposable plastic bags and overlap two adjacent plastic bags. Utility Model Content

[0004] The utility model aims to provide a point-breaking type high-speed double-station breaking mechanism for plastic bags.

[0005] A point-breaking type high-speed double-station breaking mechanism for plastic bags comprises a machine body, a material transfer device is arranged in the middle of the machine body, a double-station breaking device is arranged on the outside of the material transfer device, a feeding device and a material receiving device cooperating with the material transfer device are arranged at the front and rear of the machine body respectively, and a feeding drive device and a material receiving drive device driving the feeding device and the material receiving device are arranged at the front and rear of the machine body respectively.

[0006] Furthermore, the material transfer device includes two horizontally arranged upper material transfer rollers and two horizontally arranged lower material transfer rollers, the upper material transfer rollers and the lower material transfer rollers are both rotatably connected to the machine body, the upper material transfer rollers are located above the lower material transfer rollers and cooperate with the lower material transfer rollers, the upper material transfer rollers and the lower material transfer rollers are both provided with material transfer roller grooves, and the two upper material transfer rollers and the two lower material transfer rollers are connected by a transmission belt arranged in the material transfer roller grooves.

[0007] Furthermore, the double-station material cutting device includes an active wheel ring and a passive wheel ring which are sleeved on the outside of two upper material transfer rollers and two lower material transfer rollers, the active wheel ring and the passive wheel ring are rotatably connected to the side walls of the machine body respectively, a material cutting motor is fixedly arranged on the machine body, a disconnecting active synchronous wheel is fixedly arranged at the output end of the material cutting motor, a disconnecting passive synchronous wheel is fixedly arranged on the outer side of the active wheel ring, a disconnecting synchronous belt is arranged between the disconnecting active synchronous wheel and the disconnecting passive synchronous wheel, and four disconnecting shafts are evenly arranged between the active wheel ring and the passive wheel ring.

[0008] Furthermore, the feeding device includes an active feeding roller, a passive feeding roller and a driven feeding roller which are rotatably matched with the machine body. The passive feeding roller is rotatably arranged on the upper part of the active feeding roller and matched with it, and the driven feeding roller is rotatably arranged behind the passive feeding roller. Both the passive feeding roller and the driven feeding roller are provided with feeding roller grooves, and the passive feeding roller and the driven feeding roller are connected by a feeding belt transmission arranged in the feeding roller groove.

[0009] Furthermore, the feeding drive device includes a feeding drive motor fixedly mounted on the machine body, a feeding drive active synchronous wheel is fixedly mounted on the output end of the feeding drive motor, a feeding drive passive synchronous wheel is fixedly mounted on the outer side of the feeding passive roller, and a feeding drive synchronous belt is arranged between the feeding drive active synchronous wheel and the feeding drive passive synchronous wheel.

[0010] Furthermore, the material receiving device includes an active material receiving roller, a passive material receiving roller, an upper material receiving pressure wheel 1 and an upper material receiving pressure wheel 2 which are rotatably matched with the machine body; a material receiving conveyor belt is arranged between the active material receiving roller and the passive material receiving roller; the upper material receiving pressure wheel 1 and the upper material receiving pressure wheel 2 are rotatably arranged above the material receiving conveyor belt and contact and cooperate with it; the upper material receiving pressure wheel 1 and the upper material receiving pressure wheel 2 are both provided with a material receiving pressure wheel groove; the upper material receiving pressure wheel 1 and the upper material receiving pressure wheel 2 are connected through a material receiving pressure wheel belt transmission arranged in the material receiving pressure wheel groove.

[0011] Furthermore, the material receiving drive device includes a material receiving drive motor fixedly mounted on the machine body, an output end of the material receiving drive motor is fixedly provided with a material receiving drive active synchronous wheel, an outer side of the material receiving active roller is fixedly provided with a material receiving drive passive synchronous wheel, and a material receiving drive synchronous belt is provided between the material receiving drive active synchronous wheel and the material receiving drive passive synchronous wheel.

[0012] Furthermore, a plurality of groups of auxiliary feeding roller devices are rotatably arranged between the passive feeding roller and the driven feeding roller, and the auxiliary feeding roller device includes two auxiliary feeding rollers which are vertically arranged and cooperate with each other, the auxiliary feeding rollers are rotatably connected to the machine body, and the auxiliary feeding rollers are provided with feeding roller grooves which cooperate with the feeding belt.

[0013] Furthermore, a plurality of material receiving auxiliary pressing wheels are rotatably arranged between the upper material receiving pressing wheel one and the upper material receiving pressing wheel two, the material receiving auxiliary pressing wheels are rotatably connected to the machine body, the material receiving auxiliary pressing wheels are rotatably arranged above the material receiving conveyor belt and contact and cooperate with it, and the material receiving auxiliary pressing wheels are provided with material receiving pressing wheel grooves that cooperate with the material receiving pressing wheel belts.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The utility model transmits and limits the point-break plastic bags by setting a feeding device, a material transfer device and a material receiving device. The two breaking shafts with a longer distance among the four breaking shafts are one station, and there are two stations in total. The point-break plastic bags on both sides of the point-break line of the point-break plastic bag of the utility model are clamped by the feeding device and the material transfer device respectively, and the rotating breaking shaft has a fast speed and uniform force, and the front breaking shaft will not tear the plastic bag when picking up the point-break line position of the point-break plastic bag. At the same time, because the speed of the feeding device is greater than the speed of the material transfer device, the parts of the two plastic bags will overlap, which is convenient for subsequent winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 The utility model is a three-dimensional high-speed double-station breaking mechanism for a point-breaking plastic bag. Figure 1 ;

[0018] Figure 2 The utility model is a three-dimensional high-speed double-station breaking mechanism for a point-breaking plastic bag. Figure 2 ;

[0019] Figure 3 This is a three-dimensional diagram of the utility model without the body;

[0020] Figure 4 This is a front view of the utility model without the body.

[0021] In the figure: 1 body, 2 feeding device, 21 feeding active roller, 22 feeding passive roller, 23 feeding driven roller, 24 feeding roller groove, 25 feeding belt, 26 feeding auxiliary roller, 3 feeding device, 31 feeding roller, 32 lower feeding roller, 33 feeding roller groove, 34 conveyor belt, 4 double-station cutting device, 41 cutting motor, 42 driving wheel ring, 43 driven wheel ring, 44 disconnecting shaft, 45 disconnecting active synchronous wheel, 46 disconnecting passive synchronous wheel, 47 disconnecting synchronous belt, 5 feeding drive device, 51 Feeding drive motor, 52 feeding drive active synchronous wheel, 53 feeding drive passive synchronous wheel, 54 feeding drive synchronous belt, 6 material receiving device, 61 material receiving active roller, 62 material receiving passive roller, 63 material receiving conveyor belt, 64 material receiving upper pressure wheel one, 65 material receiving upper pressure wheel two, 66 material receiving pressure wheel groove, 67 material receiving pressure wheel belt, 68 material receiving auxiliary pressure wheel, 7 material receiving drive device, 71 material receiving drive motor, 72 material receiving drive active synchronous wheel, 73 material receiving drive passive synchronous wheel, 74 material receiving drive synchronous belt, 8 point-break plastic bag. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The following is combined with Figure 1-4 The utility model is further described as follows:

[0024] A point-breaking plastic bag high-speed double-station breaking mechanism comprises a machine body 1, characterized in that a material transfer device 3 is provided in the middle of the machine body 1, a double-station breaking device 4 is rotatably provided on the outside of the material transfer device 3, a feeding device 2 and a material receiving device 6 matched with the material transfer device 3 are respectively provided at the front and rear of the machine body 1, and a feeding drive device 5 and a material receiving drive device 7 for driving the feeding device 2 and the material receiving device 6 are respectively provided at the front and rear of the machine body 1.

[0025] In this embodiment, the feeding drive device 5 drives the feeding device 2 to rotate, the receiving drive device 7 drives the receiving device 6 to rotate, and the receiving device 6 pulls the conveying device 3 to rotate by conveying the broken plastic bag 8. Preferably, the speed of the feeding device 2 is greater than the speed of the receiving device 6, and the speed of the receiving device 6 is the same as the speed of the conveying device 3.

[0026] While the feeding device 3 is conveying the point-break plastic bag 8, the double-station cutting device 4 rotates 90°, and the front part of the double-station cutting device 4 cuts the conveyed point-break plastic bag 8 at the point-break line position between the feeding device 2 and the feeding device 3. Since the speed of the feeding device 2 is greater than the speed of the feeding device 3, the conveyed point-break plastic bag 8 preceding the broken point-break line position moves faster, and the point-break plastic bag 8 subsequent to the broken point-break line position will be partially pressed on the conveyed point-break plastic bag 8 preceding the broken point-break line position when entering the feeding device 3, so that they are partially overlapped, which is convenient for subsequent winding.

[0027] While the front part of the double-station cutting device 4 cuts off the point-break line position of the conveying point-break plastic bag 8, the overlapping part of the point-break plastic bag 8 that was broken last time just comes out of the material conveying device 3, and the rear part of the double-station cutting device 4 presses the overlapping part onto the material receiving device 6, and the material receiving device 6 presses the overlapping plastic bags and transports them away.

[0028] The feeding device 2 includes a feeding active roller 21, a feeding passive roller 22 and a feeding driven roller 23 which are rotatably matched with the body 1. The feeding passive roller 22 is rotatably arranged on the upper part of the feeding active roller 21 and matched therewith. The feeding driven roller 23 is rotatably arranged behind the feeding passive roller 22. Feeding roller grooves 24 are provided on the feeding passive roller 22 and the feeding driven roller 23. The feeding passive roller 22 and the feeding driven roller 23 are connected by a feeding belt 25 arranged in the feeding roller groove 24. A plurality of feeding auxiliary roller devices are rotatably arranged between the feeding passive roller 22 and the feeding driven roller 23. The feeding auxiliary roller device includes two feeding auxiliary rollers 26 which are vertically arranged and matched with each other. The feeding auxiliary roller 26 is rotatably connected with the body 1. The feeding auxiliary roller 26 is provided with a feeding roller groove 24 which matches with the feeding belt 25.

[0029] The feeding drive device 5 includes a feeding drive motor 51 fixedly arranged on the machine body 1, a feeding drive active synchronous wheel 52 is fixedly arranged at the output end of the feeding drive motor 51, a feeding drive passive synchronous wheel 53 is fixedly arranged on the outer side of the feeding passive roller 22, and a feeding drive synchronous belt 54 is arranged between the feeding drive active synchronous wheel 52 and the feeding drive passive synchronous wheel 53.

[0030] In this embodiment, the feeding drive motor 51 rotates and drives the feeding active roller 21 to rotate through the feeding drive active synchronous wheel 52, the feeding drive synchronous belt 54 and the feeding drive passive synchronous wheel 53. The feeding active roller 21 drives the feeding passive roller 22 in contact with it to rotate in the opposite direction, and transmits the point-break plastic bag 8 between the feeding active roller 21 and the feeding passive roller 22 backward, the feeding belt 25 transmits the point-break plastic bag 8 backward by friction, and the feeding auxiliary roller 26 ensures the flatness of the point-break plastic bag 8.

[0031] The material receiving device 6 includes a material receiving active roller 61, a material receiving passive roller 62, a material receiving upper pressing wheel 1 64 and a material receiving upper pressing wheel 2 65 which are rotatably matched with the machine body 1, a material receiving conveyor belt 63 is arranged between the material receiving active roller 61 and the material receiving passive roller 62, the material receiving upper pressing wheel 1 64 and the material receiving upper pressing wheel 2 65 are rotatably arranged above the material receiving conveyor belt 63 and contact and match with it, and the material receiving upper pressing wheel 1 64 and the material receiving upper pressing wheel 2 65 are both provided with a material receiving pressing wheel groove 66, and the material receiving upper pressing wheel The material receiving upper pressing wheel 64 and the material receiving upper pressing wheel 2 65 are connected through the material receiving pressing wheel belt 67 arranged in the material receiving pressing wheel groove 66. A plurality of material receiving auxiliary pressing wheels 68 are rotatably arranged between the material receiving upper pressing wheel 64 and the material receiving upper pressing wheel 2 65. The material receiving auxiliary pressing wheels 68 are rotatably connected to the machine body 1. The material receiving auxiliary pressing wheels 68 are rotatably arranged above the material receiving conveyor belt 63 and contact and cooperate with it. The material receiving auxiliary pressing wheels 68 are provided with material receiving pressing wheel grooves 66 that cooperate with the material receiving pressing wheel belts 67.

[0032] The material receiving drive device 7 includes a material receiving drive motor 71 fixedly arranged on the machine body 1, a material receiving drive active synchronous wheel 72 is fixedly arranged on the output end of the material receiving drive motor 71, a material receiving drive passive synchronous wheel 73 is fixedly arranged on the outer side of the material receiving active roller 61, and a material receiving drive synchronous belt 74 is arranged between the material receiving drive active synchronous wheel 72 and the material receiving drive passive synchronous wheel 73.

[0033] In this embodiment, the material receiving drive motor 71 rotates and drives the material receiving active roller 61 to rotate through the material receiving drive active synchronous wheel 72, the material receiving drive synchronous belt 74 and the material receiving drive passive synchronous wheel 73. The material receiving active roller 61 and the material receiving passive roller 62 drive the material receiving conveyor belt 63 to rotate, and the material receiving conveyor belt 63 drives the material receiving upper pressing wheel 1 64 in contact with it to rotate, and transmits the point-break plastic bag 8 located between the material receiving upper pressing wheel 1 64 and the material receiving conveyor belt 63 backward, the material receiving pressing wheel belt 67 transmits the point-break plastic bag 8 backward through friction, the material receiving auxiliary pressing wheel 68 presses the overlapping plastic bags and ensures the flatness of the plastic bags, and the material receiving conveyor belt 63 transports the plastic bags backward.

[0034] The material transfer device 3 includes two horizontally arranged upper material transfer rollers 31 and two horizontally arranged lower material transfer rollers 32, the upper material transfer rollers 31 and the lower material transfer rollers 32 are both rotatably connected to the machine body 1, the upper material transfer rollers 31 are located above the lower material transfer rollers 32 and cooperate with the lower material transfer rollers 32, the upper material transfer rollers 31 and the lower material transfer rollers 32 are both provided with material transfer roller grooves 33, and the two upper material transfer rollers 31 and the two lower material transfer rollers 32 are connected through a transmission belt 34 arranged in the material transfer roller grooves 33.

[0035] The double-station cutting device 4 includes a driving wheel ring 42 and a passive wheel ring 43 which are sleeved on the outside of two upper feeding rollers 31 and two lower feeding rollers 32. The driving wheel ring 42 and the passive wheel ring 43 are rotatably connected to the side walls of the body 1 respectively. A cutting motor 41 is fixedly arranged on the body 1. A disconnecting driving synchronous wheel 45 is fixedly arranged at the output end of the cutting motor 41. A disconnecting passive synchronous wheel 46 is fixedly arranged on the outer side of the driving wheel ring 42. A disconnecting synchronous belt 47 is arranged between the disconnecting driving synchronous wheel 45 and the disconnecting passive synchronous wheel 46. Four disconnecting shafts 44 are evenly arranged between the driving wheel ring 42 and the passive wheel ring 43.

[0036] In this embodiment, the point-breaking plastic bag 8 is arranged between the upper feed roller 31 and the lower feed roller 32 which are in contact and cooperation with each other. When the material receiving driving device 7 drives the plastic bag to move backward, the plastic bag drives the upper feed roller 31 and the lower feed roller 32 to rotate through friction. The contact and cooperation between the upper feed roller 31 and the lower feed roller 32 play the role of transferring and clamping the point-breaking plastic bag 8 backward. Four disconnection shafts 44 are evenly arranged between the driving wheel ring 42 and the driven wheel ring 43, and the angle between two adjacent disconnection shafts 44 is 90°, two of which are located above the point-breaking plastic bag 8, and the other two disconnection shafts 44 are located below the point-breaking plastic bag 8. The two disconnection shafts 44 that are farther apart among the four disconnection shafts 44 are one station, and there are two stations in total. When the middle of one of the plastic bags of the point-break plastic bag 8 moves between the two upper feed rollers 31 and the two lower feed rollers 32, the breaking motor 41 rotates 90° clockwise, and the breaking shaft 44 below the point-break plastic bag 8 between the feeding device 2 and the feeding device 3 rotates upward to break the point-break line position of the point-break plastic bag 8, and the plastic bag in front of the broken point-break line moves upward. Since the moving speed of the point-break plastic bag 8 at the rear of the broken point-break line is greater than the moving speed of the plastic bag in front of the broken point-break line, when the plastic bag in front of the broken point-break line is pulled forward and downward by the feed roller 31 and the lower feed roller 32, a part of it just overlaps on the point-break plastic bag 8 at the rear of the broken point-break line, and then enters between the feed roller 31 and the lower feed roller 32 together. Since the point-break plastic bags 8 on both sides of the point-break line are clamped by the feeding device 2 and the transfer device 3 respectively, and the rotating breaking shaft 44 is fast and exerts force evenly, the plastic bags will not be torn. At the same time, since the speed of the feeding device 2 is greater than the speed of the transfer device 3, the two plastic bags will be partially overlapped, which is convenient for subsequent winding.

[0037] The breaking shaft 44 below the point-broken plastic bag 8 between the feeding device 2 and the material transfer device 3 rotates upward to cut the point-broken line position of the point-broken plastic bag 8. At the same time, the breaking shaft 44 below the broken plastic bag 8 between the material transfer device 3 and the material receiving device 6 rotates downward to press the plastic bag and the point-broken plastic bag 8 downward and drop them onto the material receiving conveyor belt 63, and then enter between the material receiving upper pressure wheel 64 and the material receiving conveyor belt 63 and continue to be transmitted backward.

[0038] The double-station cutting device 4 sequentially cuts the point-breaking lines of the point-breaking plastic bag 8 in a cyclic operation, so that the plastic bags are formed into independent and sequentially overlapped plastic bags, and are passed backward.

[0039] In summary, the present invention is not limited to the above specific embodiments. Those skilled in the art may make several changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the claims of the present invention.

[0040] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0041] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

Claims

1. A point-breaking plastic bag high-speed double-station breaking mechanism, comprising a body (1), characterized in that: A material transfer device (3) is arranged in the middle of the machine body (1), a double-station material cutting device (4) is rotatably arranged outside the material transfer device (3), a material feeding device (2) and a material receiving device (6) which cooperate with the material transfer device (3) are arranged at the front and rear of the machine body (1), respectively, and a material feeding drive device (5) and a material receiving drive device (7) which drive the material feeding device (2) and the material receiving device (6) are arranged at the front and rear of the machine body (1), respectively.

2. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 1, characterized in that: The material transfer device (3) comprises two horizontally arranged upper material transfer rollers (31) and two horizontally arranged lower material transfer rollers (32), the upper material transfer rollers (31) and the lower material transfer rollers (32) are both rotatably connected to the machine body (1), the upper material transfer rollers (31) are located above the lower material transfer rollers (32) and cooperate with the lower material transfer rollers (32), the upper material transfer rollers (31) and the lower material transfer rollers (32) are both provided with material transfer roller grooves (33), and the two upper material transfer rollers (31) and the two lower material transfer rollers (32) are both connected by transmission through a transmission belt (34) arranged in the material transfer roller grooves (33).

3. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 2, characterized in that: The double-station material cutting device (4) comprises a driving wheel ring (42) and a driven wheel ring (43) which are sleeved on the outside of two upper material feeding rollers (31) and two lower material feeding rollers (32); the driving wheel ring (42) and the driven wheel ring (43) are rotatably connected to the side walls of the machine body (1) respectively; a material cutting motor (41) is fixedly arranged on the machine body (1); a disconnecting driving synchronous wheel (45) is fixedly arranged at the output end of the material cutting motor (41); a disconnecting passive synchronous wheel (46) is fixedly arranged on the outside of the driving wheel ring (42); a disconnecting synchronous belt (47) is arranged between the disconnecting driving synchronous wheel (45) and the disconnecting passive synchronous wheel (46); and four disconnecting shafts (44) are evenly arranged between the driving wheel ring (42) and the driven wheel ring (43).

4. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 1, characterized in that: The feeding device (2) comprises a feeding active roller (21), a feeding passive roller (22) and a feeding driven roller (23) which are rotatably matched with the machine body (1); the feeding passive roller (22) is rotatably arranged on the upper part of the feeding active roller (21) and matched therewith; the feeding driven roller (23) is rotatably arranged behind the feeding passive roller (22); both the feeding passive roller (22) and the feeding driven roller (23) are provided with a feeding roller groove (24); the feeding passive roller (22) and the feeding driven roller (23) are connected to each other by a feeding belt (25) arranged in the feeding roller groove (24).

5. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 4, characterized in that: The feeding drive device (5) comprises a feeding drive motor (51) fixedly mounted on the machine body (1); a feeding drive active synchronous wheel (52) is fixedly mounted on the output end of the feeding drive motor (51); a feeding drive passive synchronous wheel (53) is fixedly mounted on the outer side of the feeding passive roller (22); and a feeding drive synchronous belt (54) is arranged between the feeding drive active synchronous wheel (52) and the feeding drive passive synchronous wheel (53).

6. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 1, characterized in that: The material receiving device (6) comprises a material receiving active roller (61), a material receiving passive roller (62), a material receiving upper pressing wheel 1 (64) and a material receiving upper pressing wheel 2 (65) which are rotatably matched with the machine body (1); a material receiving conveyor belt (63) is arranged between the material receiving active roller (61) and the material receiving passive roller (62); the material receiving upper pressing wheel 1 (64) and the material receiving upper pressing wheel 2 (65) are rotatably arranged above the material receiving conveyor belt (63) and are in contact with and matched with the material receiving conveyor belt (63); the material receiving upper pressing wheel 1 (64) and the material receiving upper pressing wheel 2 (65) are both provided with a material receiving pressing wheel groove (66); the material receiving upper pressing wheel 1 (64) and the material receiving upper pressing wheel 2 (65) are connected to each other through a material receiving pressing wheel belt (67) arranged in the material receiving pressing wheel groove (66).

7. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 6, characterized in that: The material receiving drive device (7) comprises a material receiving drive motor (71) fixedly mounted on the machine body (1); a material receiving drive active synchronous wheel (72) is fixedly mounted on the output end of the material receiving drive motor (71); a material receiving drive passive synchronous wheel (73) is fixedly mounted on the outer side of the material receiving active roller (61); and a material receiving drive synchronous belt (74) is arranged between the material receiving drive active synchronous wheel (72) and the material receiving drive passive synchronous wheel (73).

8. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 4, characterized in that: A plurality of groups of auxiliary feeding roller devices are rotatably arranged between the passive feeding roller (22) and the driven feeding roller (23), the auxiliary feeding roller device comprising two auxiliary feeding rollers (26) arranged vertically and cooperating with each other, the auxiliary feeding rollers (26) being rotatably connected to the machine body (1), and the auxiliary feeding rollers (26) being provided with feeding roller grooves (24) cooperating with the feeding belt (25).

9. A point-breaking plastic bag high-speed double-station breaking mechanism as claimed in claim 6, characterized in that: A plurality of material receiving auxiliary pressing wheels (68) are rotatably arranged between the material receiving upper pressing wheel 1 (64) and the material receiving upper pressing wheel 2 (65); the material receiving auxiliary pressing wheels (68) are rotatably connected to the machine body (1); the material receiving auxiliary pressing wheels (68) are rotatably arranged above the material receiving conveyor belt (63) and are in contact with the material receiving conveyor belt (63); and a material receiving pressing wheel groove (66) is provided on the material receiving auxiliary pressing wheel (68) and is matched with the material receiving pressing wheel belt (67).

Images