Bag mouth rubbing mechanism of film packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and discloses a bag mouth twisting mechanism of a film packaging machine, which comprises an upper bag twisting device and a lower bag twisting device, the upper bag twisting device is arranged above the lower bag twisting device, and one or both of the upper bag twisting device and the lower bag twisting device are configured to move along a first direction; the upper bag rubbing device comprises an upper driving mechanism and an upper friction belt, the upper driving mechanism drives the upper friction belt to rotate, the lower bag rubbing device comprises a lower driving mechanism and a lower friction belt, the lower driving mechanism drives the lower friction belt to rotate, and the lower driving mechanism drives the lower friction belt to rotate. The rotation direction of the upper friction belt is opposite to that of the lower friction belt, and the contact face of the upper friction belt and the contact face of the lower friction belt extend in the second direction. The conveying mechanism conveys a film packaging bag between the upper bag twisting device and the lower bag twisting device, firstly, the upper bag twisting device and the lower bag twisting device clamp a bag opening, then through reciprocating friction of the upper friction belt and the lower friction belt, two layers of films at the bag opening are staggered and prevented from being adhered together, and the bag opening efficiency of the next packaging procedure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a bag opening rubbing mechanism of a film packaging machine. Background Art

[0002] The packaging process of a film packaging machine usually includes four steps: bag making, bag opening, pushing the film into the bag, and sealing. Bag making refers to making the film into a packaging bag with an opening, and bag opening refers to opening the opening of the packaging bag. Traditionally, the bag opening is opened by a suction cup. However, since the film packaging bag is very thin, two layers of film are stacked together at the opening. The suction cup often sucks up both layers of film together, resulting in bag opening failure and low bag opening efficiency. Utility Model Content

[0003] Based on the above, the purpose of the present invention is to provide a bag opening rubbing mechanism for a film packaging machine to improve the bag opening efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a bag-rubbing mechanism for a film packaging machine, comprising an upper bag-rubbing device and a lower bag-rubbing device, wherein the upper bag-rubbing device is arranged above the lower bag-rubbing device, and one or both of the upper bag-rubbing device and the lower bag-rubbing device are configured to be able to move along a first direction;

[0006] The upper bag rubbing device includes an upper driving mechanism and an upper friction belt, and the upper driving mechanism drives the upper friction belt to rotate. The lower bag rubbing device includes a lower driving mechanism and a lower friction belt, and the lower driving mechanism drives the lower friction belt to rotate. The rotation directions of the upper friction belt and the lower friction belt are opposite, and the contact surface of the upper friction belt and the lower friction belt extends along the second direction.

[0007] Preferably, the upper bag rubbing device further comprises an upper mounting plate, the upper mounting plate extending along the second direction, an upper driving shaft and an upper follower shaft being rotatably provided on both sides of the upper mounting plate, and the upper friction belt being rotatably sleeved between the upper driving shaft and the upper follower shaft;

[0008] The upper driving mechanism includes an upper driving cylinder and an upper connecting rod. The output end of the upper driving cylinder is hinged to one end of the upper connecting rod, and the other end of the upper connecting rod is hinged to the upper follower shaft.

[0009] Preferably, the lower bag rubbing device further comprises a lower mounting plate, the lower mounting plate extending along the second direction, a lower driving shaft and a lower follower shaft being rotatably provided on both sides of the lower mounting plate, and the lower friction belt being rotatably sleeved between the lower driving shaft and the lower follower shaft;

[0010] The lower driving mechanism includes a lower driving cylinder and a lower connecting rod. The output end of the lower driving cylinder is hinged to one end of the lower connecting rod, and the other end of the lower connecting rod is hinged to the lower follower shaft.

[0011] Preferably, the rear side of the upper driving shaft is coaxially connected to an upper connecting shaft, and the upper connecting shaft is hinged to the upper connecting rod. The rear side of the lower driving shaft is coaxially connected to a lower connecting shaft, and the lower connecting shaft is hinged to the lower connecting rod.

[0012] Preferably, an upper connecting plate is further provided on the upper mounting plate, the top of the upper connecting plate is connected to the upper driving cylinder, and a lower connecting plate is further provided on the lower mounting plate, the bottom of the lower connecting plate is connected to the lower driving cylinder.

[0013] Preferably, when the upper bag rubbing device is configured to be movable along the first direction;

[0014] The bag-mouth rubbing mechanism of the film packaging machine also includes a fixed plate, the lower bag-rubbing device is fixedly connected to the fixed plate, a driving cylinder is also provided near the top of the fixed plate, and a fixed connecting plate is provided at the output end of the driving cylinder, and the upper bag-rubbing device is connected to the bottom of the fixed connecting plate.

[0015] Preferably, a plurality of upper bearings are rotatably provided on the upper mounting plate, and the plurality of upper bearings are arranged at equal intervals between the upper driving shaft and the upper follower shaft;

[0016] The lower mounting plate is further provided with a plurality of lower bearings, which are arranged at equal intervals between the lower driving shaft and the lower follower shaft.

[0017] Preferably, the upper connecting rod is provided with a plurality of upper connecting holes, and the lower connecting rod is provided with a plurality of lower connecting holes.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a bag opening rubbing mechanism for a film packaging machine. The conveying mechanism conveys the film packaging bag between an upper bag rubbing device and a lower bag rubbing device. First, the upper bag rubbing device and the lower bag rubbing device clamp the bag opening. Then, the reciprocating friction of the upper friction belt and the lower friction belt staggers the two layers of film at the bag opening to prevent them from sticking together, thereby improving the bag opening efficiency of the next packaging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of the cooperation between the conveying mechanism and the bag opening rubbing mechanism of the film packaging machine provided in an embodiment of the utility model;

[0022] Figure 2 A schematic structural diagram of a bag opening rubbing mechanism of a film packaging machine provided in an embodiment of the present invention;

[0023] Figure 3 This is another visual structural diagram of the bag opening rubbing mechanism of the film packaging machine provided by an embodiment of the present utility model.

[0024] In the picture:

[0025] X, first direction; Y, second direction;

[0026] 1. Conveying mechanism;

[0027] 2. Bag-rubbing mechanism for film packaging machine; 21. Upper bag-rubbing device; 211. Upper mounting plate; 212. Upper driving cylinder; 213. Upper connecting rod; 2131. Upper connecting hole; 214. Upper friction belt; 215. Upper driving shaft; 2151. Upper connecting shaft; 216. Upper follower shaft; 217. Upper connecting plate; 218. Upper bearing; 22. Lower bag-rubbing device; 221. Lower mounting plate; 222. Lower driving cylinder; 223. Lower connecting rod; 2231. Lower connecting hole; 224. Lower friction belt; 225. Lower driving shaft; 2251. Lower connecting shaft; 226. Lower follower shaft; 227. Lower connecting plate; 228. Lower bearing; 23. Fixed plate; 24. Driving cylinder; 25. Fixed connecting plate. DETAILED DESCRIPTION

[0028] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] like Figures 1 to 3 As shown, the present invention provides a bag-mouth rubbing mechanism 2 for a film packaging machine, comprising an upper bag-rubbing device 21 and a lower bag-rubbing device 22. The upper bag-rubbing device 21 and the lower bag-rubbing device 22 are arranged on the side of a conveying mechanism 1, respectively located above and below the side of the conveying mechanism 1. The conveying mechanism 1 refers to the conveying mechanism 1 of the packaging machine. The purpose of the conveying mechanism 1 is to convey the completed bag-making packaging bag to the bag opening. Therefore, the bag-mouth rubbing mechanism 2 for a film packaging machine provided by the present invention is arranged before the bag opening. As for the conveying mechanism 1, it is mainly the existing technology and does not belong to the innovation of the present invention, which will not be repeated here. The upper bag-rubbing device 21 is arranged above the lower bag-rubbing device 22. One or both of the upper bag-rubbing device 21 and the lower bag-rubbing device 22 are configured to be able to move along a first direction. The first direction refers to the X direction, which is the direction in which the conveying mechanism 1 conveys the packaging bag.

[0033] The upper bag rubbing device 21 includes an upper driving mechanism and an upper friction belt 214, and the upper driving mechanism drives the upper friction belt 214 to rotate. The lower bag rubbing device 22 includes a lower driving mechanism and a lower friction belt 224, and the lower driving mechanism drives the lower friction belt 224 to rotate. The rotation directions of the upper friction belt 214 and the upper friction belt 214 are opposite, and the contact surface of the upper friction belt 214 and the lower friction belt 224 extends along the second direction, which is the Y direction. The first direction and the second direction are perpendicular to each other.

[0034] The working principle of the bag opening rubbing mechanism 2 of a film packaging machine provided in this embodiment is as follows: the packaging bag is conveyed between the upper bag rubbing device 21 and the lower bag rubbing device 22, wherein the bag opening of the packaging bag is located between the upper friction belt 214 and the lower friction belt 224, and the bag rubbing device 21 is first moved downward in a first direction, or the lower bag rubbing device 22 is moved up and down, or the upper bag rubbing device 21 is moved downward and the lower bag rubbing device 22 is moved upward at the same time. The purpose of moving in the first direction is to clamp the bag opening of the packaging bag, and then the upper driving mechanism drives the upper friction belt 214 to move, and the lower driving mechanism drives the lower friction belt 224 to move, and the bag opening of the packaging bag is clamped between the upper friction belt 214 and the lower friction belt 224. Since the rotation directions of the upper friction belt 214 and the lower friction belt 224 are opposite, a rubbing action is formed, which can effectively prevent the upper and lower layers of the bag opening of the packaging bag from sticking together, thereby improving the bag opening efficiency of the next packaging process. After the bag rubbing is completed, the upper driving mechanism and the lower driving mechanism stop driving, the upper bag rubbing device 21 and the lower bag rubbing device 22 are separated, and the conveying mechanism 1 conveys the packaging bag to the bag opening process.

[0035] In some embodiments, such as Figure 2 and 3As shown, the upper bag rubbing device 21 also includes an upper mounting plate 211, which extends along the second direction, and an upper driving shaft 215 and an upper follower shaft 216 are rotatably provided on both sides of the upper mounting plate 211, and the upper friction belt 214 is rotatably sleeved between the upper driving shaft 215 and the upper follower shaft 216; the upper driving mechanism includes an upper driving cylinder 212 and an upper connecting rod 213, and the output end of the upper driving cylinder 212 is hinged to one end of the upper connecting rod 213, and the other end of the upper connecting rod 213 is hinged to the upper follower shaft 216. The lower bag rubbing device 22 also includes a lower mounting plate 221, which extends along the second direction. A lower driving shaft 225 and a lower follower shaft 226 are rotatably provided on both sides of the lower mounting plate 221, and the lower friction belt 224 is rotatably sleeved between the lower driving shaft 225 and the lower follower shaft 226; the lower driving mechanism includes a lower driving cylinder 222 and a lower connecting rod 223, the output end of the lower driving cylinder 222 is hinged to one end of the lower connecting rod 223, and the other end of the lower connecting rod 223 is hinged to the lower follower shaft 226. Specifically, the upper driving cylinder 24212 drives the upper connecting rod 213 to swing, and the upper connecting rod 213 drives the upper active shaft 215 to rotate, thereby causing the upper friction belt 214 to rotate; the lower driving cylinder 222 drives the lower connecting rod 223 to swing, and the lower connecting rod 223 drives the lower active shaft 225 to rotate, thereby causing the lower friction belt 224 to rotate, wherein the upper connecting rod 213 and the lower connecting rod 223 move closer to each other and then move away from each other, and repeat this cycle to ensure that the rotation directions of the upper friction belt 214 and the lower friction belt 224 are opposite.

[0036] In some embodiments, as Figure 2 and 3 As shown, the rear side of the upper driving shaft 215 is coaxially connected to an upper connecting shaft 2151, and the upper connecting shaft 2151 is hinged to the upper connecting rod 213. The rear side of the lower driving shaft 225 is coaxially connected to a lower connecting shaft 2251, and the lower connecting shaft 2251 is hinged to the lower connecting rod 223. Specifically, the upper driving shaft 215 is hinged to the upper connecting rod 213 through the upper connecting shaft 2151 on the rear side, and the lower driving shaft 225 is hinged to the lower connecting rod 223 through the lower connecting shaft 2251 on the rear side, which can effectively prevent the connecting rods from being blocked by the sides of the conveying mechanism 1.

[0037] In some embodiments, as Figure 2 and 3 As shown, in order to install the upper driving cylinder 212 and the lower driving cylinder 222, an upper connecting plate 217 is further provided on the upper mounting plate 211, and the top of the upper connecting plate 217 is connected to the upper driving cylinder 212. A lower connecting plate 227 is also provided on the lower mounting plate 221, and the bottom of the lower connecting plate 227 is connected to the lower driving cylinder 222.

[0038] In some embodiments, as Figure 2 and 3 As shown, when the upper bag-rubbing device 21 is configured to move in a first direction, the film packaging machine bag-opening bag-rubbing mechanism 2 further includes a fixed plate 23, to which the lower bag-rubbing device 22 is fixedly connected. A driving cylinder 24 is also provided near the top of the fixed plate 23. A fixed connecting plate 25 is provided at the output end of the driving cylinder 24, and the lower portion of the fixed connecting plate 25 is connected to the upper bag-rubbing device 21. Specifically, in this embodiment, the lower bag-rubbing device 22 is stationary, while the upper bag-rubbing device 21 is driven by the driving cylinder 24 to move in the first direction.

[0039] In some embodiments, as Figure 2 and 3 As shown, the upper mounting plate 211 is also rotatably provided with a plurality of upper bearings 218, which are evenly spaced and arranged between the upper driving shaft 215 and the upper follower shaft 216. The lower mounting plate 221 is also provided with a plurality of lower bearings 228, which are evenly spaced and arranged between the lower driving shaft 225 and the lower follower shaft 226. Specifically, by providing the plurality of upper bearings 218 and lower bearings 228, the upper friction belt 214 and the lower friction belt 224 are kept taut, and a supporting force is generated in the second direction when the upper friction belt 214 and the lower friction belt 224 rub against each other in the second direction, thereby improving the bag-rubbing efficiency.

[0040] In some embodiments, as Figure 2 and 3 As shown, the upper connecting rod 213 is provided with a plurality of upper connecting holes 2131, and the lower connecting rod 223 is provided with a plurality of lower connecting holes 2231. By providing the upper connecting holes 2131 and the lower connecting holes 2231, the hinge position of the upper connecting rod 213 and the lower connecting rod 223 can be adjusted to control the travel of the upper friction belt 214 and the lower friction belt 224, thereby controlling the bag rubbing efficiency.

[0041] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A bag rubbing mechanism for a film packaging machine, characterized in that: The invention comprises an upper bag rubbing device (21) and a lower bag rubbing device (22), wherein the upper bag rubbing device (21) is arranged above the lower bag rubbing device (22), and one or both of the upper bag rubbing device (21) and the lower bag rubbing device (22) are configured to be movable along a first direction; The upper bag rubbing device (21) includes an upper driving mechanism and an upper friction belt (214), wherein the upper driving mechanism drives the upper friction belt (214) to rotate; the lower bag rubbing device (22) includes a lower driving mechanism and a lower friction belt (224), wherein the lower driving mechanism drives the lower friction belt (224) to rotate; the upper friction belt (214) and the upper friction belt (214) rotate in opposite directions; and the contact surfaces of the upper friction belt (214) and the lower friction belt (224) extend along a second direction.

2. A bag rubbing mechanism for a film packaging machine according to claim 1, characterized in that: The upper bag rubbing device (21) further comprises an upper mounting plate (211), the upper mounting plate (211) extending along the second direction, an upper driving shaft (215) and an upper follower shaft (216) being rotatably provided on both sides of the upper mounting plate (211), and an upper friction belt (214) being rotatably sleeved between the upper driving shaft (215) and the upper follower shaft (216); The upper driving mechanism comprises an upper driving cylinder (212) and an upper connecting rod (213); the output end of the upper driving cylinder (212) is hinged to one end of the upper connecting rod (213); and the other end of the upper connecting rod (213) is hinged to the upper follower shaft (216).

3. A bag rubbing mechanism for a film packaging machine according to claim 2, characterized in that: The lower bag rubbing device (22) further comprises a lower mounting plate (221), the lower mounting plate (221) extending along the second direction, a lower driving shaft (225) and a lower follower shaft (226) being rotatably provided on both sides of the lower mounting plate (221), and the lower friction belt (224) being rotatably sleeved between the lower driving shaft (225) and the lower follower shaft (226); The lower driving mechanism comprises a lower driving cylinder (222) and a lower connecting rod (223); the output end of the lower driving cylinder (222) is hinged to one end of the lower connecting rod (223); and the other end of the lower connecting rod (223) is hinged to the lower follower shaft (226).

4. A bag rubbing mechanism for a film packaging machine according to claim 3, characterized in that: The rear side of the upper driving shaft (215) is coaxially connected to an upper connecting shaft (2151), and the upper connecting shaft (2151) is hinged to the upper connecting rod (213). The rear side of the lower driving shaft (225) is coaxially connected to a lower connecting shaft (2251), and the lower connecting shaft (2251) is hinged to the lower connecting rod (223).

5. The bag opening rubbing mechanism of a film packaging machine according to claim 3, characterized in that: An upper connecting plate (217) is further provided on the upper mounting plate (211), and the top of the upper connecting plate (217) is connected to the upper driving cylinder (212). A lower connecting plate (227) is further provided on the lower mounting plate (221), and the bottom of the lower connecting plate (227) is connected to the lower driving cylinder (222).

6. The bag opening rubbing mechanism of a film packaging machine according to claim 1, characterized in that: When the upper bag rubbing device (21) is configured to be movable along a first direction; The bag-mouth rubbing mechanism of the film packaging machine further comprises a fixed plate (23), the lower bag-rubbing device (22) is fixedly connected to the fixed plate (23), a driving cylinder (24) is further provided at a position near the top of the fixed plate (23), a fixed connecting plate (25) is provided at the output end of the driving cylinder (24), and the lower part of the fixed connecting plate (25) is connected to the upper bag-rubbing device (21).

7. The bag opening rubbing mechanism of a film packaging machine according to claim 3, characterized in that: A plurality of upper bearings (218) are rotatably mounted on the upper mounting plate (211), and the plurality of upper bearings (218) are arranged at equal intervals between the upper driving shaft (215) and the upper follower shaft (216); A plurality of lower bearings (228) are also provided on the lower mounting plate (221), and the plurality of lower bearings (228) are arranged at equal intervals between the lower driving shaft (225) and the lower follower shaft (226).

8. The bag opening rubbing mechanism of a film packaging machine according to claim 4, characterized in that: The upper connecting rod (213) is provided with a plurality of upper connecting holes (2131), and the lower connecting rod (223) is provided with a plurality of lower connecting holes (2231).

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