Breaking device of bag making machine

Abstract

The utility model aims to provide a breaking device of a bag making machine, which comprises a support, a first driving motor, a breaking rotating wheel and a breaking rod, the breaking rotating wheel is rotatably mounted on the support, the breaking rod is mounted on the inner side surface of the breaking rotating wheel, and an output shaft of the first driving motor is in transmission connection with the breaking rotating wheel. According to the utility model, the breaking rotating wheel and the breaking rod are arranged, so that in the reciprocating rotation process, point-breaking rolling bags passing through the conveying compression roller can be automatically broken into independent bags one by one; the acting force of the breaking rod on the point-breaking rolling bag is very uniform, so that deviation caused by non-uniform stress of the point-breaking rolling bag during breaking is avoided; the production efficiency is improved; and the breaking effect is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of bag making equipment, and in particular relates to a breaking device of a bag making machine. Background Art

[0002] The production of garbage bags, fresh-keeping bags and shopping bags on the market now is mostly realized by unwinding, folding, heat sealing, point breaking and winding of a whole roll of film material. Bag making machine is a machine for making various plastic packaging bags or other material packaging bags. Its processing range is various sizes, thicknesses and specifications of plastic or other material packaging bags. Generally, plastic bags are mostly made by using bag making machines to heat seal and point break a continuous hollow cylindrical plastic film at equal intervals to form a single or continuous plastic bag. However, in order to facilitate subsequent use, operation, inventory, packaging, etc., some plastic bags are mostly rolled into rolls. Generally, we call rolled plastic bags continuous roll bags. It is troublesome to tear off the plastic bags one by one from the point break when using them. In order to cut the connected plastic bags into independent plastic bags during the production process, the cylinder used to drive the cutter to cut the continuous roll bag. This cutting speed is slow, inconvenient to carry and store, and occupies a large space. It even produces cutting wire drawing phenomenon, which affects the cutting quality and reduces the subsequent winding quality of the product. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a breaking device for a bag making machine which can break quickly and with stable effect.

[0004] The breaking device of the bag making machine provided by the utility model includes a bracket, a first drive motor, a breaking wheel and a breaking rod, wherein the breaking wheel is rotatably mounted on the bracket, the breaking rod is mounted on the inner side surface of the breaking wheel, and the output shaft of the first drive motor is transmission-connected to the breaking wheel.

[0005] As a further solution of the utility model, the interrupting device also includes a conveying pressure roller and a second drive motor. The interrupting wheel is ring-shaped. The conveying pressure roller passes through the interrupting wheel and is rotatably installed on the bracket. The output shaft of the second drive motor is drivingly connected to the conveying pressure roller.

[0006] As a further solution of the utility model, the interrupting wheel includes a first interrupting wheel and a second interrupting wheel, the output shaft of the first drive motor is respectively connected to the first interrupting wheel and the second interrupting wheel through the first transmission wheel and the second transmission wheel, and the two ends of the interrupting rod are respectively connected to the inner side of the first interrupting wheel and the second interrupting wheel. The first transmission wheel and the second transmission wheel are both installed on the transmission shaft, and the first transmission wheel and the second transmission wheel are respectively connected to the first interrupting wheel and the second interrupting wheel by a synchronous belt or chain, and the transmission shaft is connected to the output shaft of the first drive motor. In some embodiments, a driven wheel is provided on the transmission shaft, and a driving wheel is provided on the output shaft of the first drive motor, and the driving wheel and the driven wheel are connected by a synchronous belt or chain.

[0007] During production, the point-broken roll bag is transported to the conveying roller through the conveying mechanism in front of the breaking device. When the point-broken roll bag is clamped by the unwinding conveying mechanism and the conveying roller, the point-broken roll bag has tension at the point-broken part. The breaking rod breaks the point-broken roll bag in the conveying roller at the point-broken part when the first breaking wheel and the second breaking wheel are rotating. Since the conveying roller is arranged between the first breaking wheel and the second breaking wheel, the breaking rod exerts a very uniform force on the point-broken roll bag, thereby avoiding uneven force on the point-broken roll bag and causing deviation during breaking. The broken plastic bag can directly enter the decelerating winding mechanism for winding.

[0008] As a further solution of the utility model, a plurality of spaced-apart breaking rods are provided between the first breaking wheel and the second breaking wheel, and the plurality of breaking rods take turns to break the point-breaking continuous roll bags, thereby improving the production effect.

[0009] As a further solution of the utility model, the bracket is provided with an induction switch for detecting the positioning of the breaking shaft and sending a signal to a controller on the control system of the bag making machine, and the controller controls the breaking action of the breaking rod. The induction switch can be an infrared induction switch, a microwave induction switch, an ultrasonic induction switch, a piezoelectric induction switch, an electromagnetic induction switch, a capacitive induction switch, a photoelectric induction switch, etc.

[0010] The utility model has the following advantages and effects: through the breaking wheel and the breaking rod, the point-breaking continuous roll bag passing through the conveying roller can be automatically broken into independent bags during the reciprocating rotation; the breaking rod has a very uniform force on the point-breaking continuous roll bag, avoiding uneven force on the point-breaking continuous roll bag and causing deviation during breaking; the production efficiency is improved and the breaking effect is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of a preferred embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the preferred embodiment of the utility model after removing the conveying roller;

[0013] Figure 3 It is a structural schematic diagram of the preferred embodiment of the utility model when in use.

[0014] The diagram shows: 1. bracket; 2. first drive motor; 3. breaking wheel; 4. breaking rod; 5. conveying roller; 6. second drive motor; 31. first breaking wheel; 32. second breaking wheel; 71. first transmission wheel; 72. second transmission wheel; 73. driven wheel; 74. driving wheel; 8. transmission shaft; 9. induction switch; a. unwinding and conveying mechanism; b. winding mechanism. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] It should be noted that, in the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0017] At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1-Figure 3 The breaking device of a bag making machine shown in the figure comprises a bracket 1, a first drive motor 2, a breaking wheel 3 and a breaking rod 4, the breaking wheel 3 is rotatably mounted on the bracket 1, the breaking rod 4 is mounted on the inner side of the breaking wheel 3, and the output shaft of the first drive motor 2 is drivingly connected to the breaking wheel 3. Specifically, the output shaft of the first drive motor 2 and the breaking wheel 3 can be connected by a transmission wheel and a synchronous belt or chain.

[0019] In this preferred embodiment, the interrupting device also includes a conveying roller 5 and a second drive motor 6. The interrupting wheel 3 is ring-shaped. The conveying roller 5 passes through the interrupting wheel and can be rotatably installed on the bracket 1. The output shaft of the second drive motor 6 is transmission-connected to the conveying roller 5.

[0020] In this preferred embodiment, the interrupting wheel 3 includes a first interrupting wheel 31 and a second interrupting wheel 32. The output shaft of the first drive motor 2 is respectively connected to the first interrupting wheel 31 and the second interrupting wheel 32 through the first transmission wheel 71 and the second transmission wheel 72. The two ends of the interrupting rod 4 are respectively connected to the inner side surfaces of the first interrupting wheel 31 and the second interrupting wheel 32.

[0021] In this preferred embodiment, the first transmission wheel 71 and the second transmission wheel 72 are both installed on the transmission shaft 8, and the first transmission wheel 71 and the second transmission wheel 72 are respectively connected to the first interrupting wheel 31 and the second interrupting wheel 32 by a synchronous belt or a chain, and the transmission shaft 8 is connected to the output shaft of the first drive motor 2. Specifically, a driven wheel 73 is provided on the transmission shaft 8, and a driving wheel 74 is provided on the output shaft of the first drive motor 2. The driving wheel 74 and the driven wheel 73 are connected by a synchronous belt or a chain.

[0022] During production, the point-broken roll bag is conveyed to the conveying roller 5 through the conveying mechanism in front of the breaking device. When the point-broken roll bag is clamped by the unwinding conveying mechanism a and the conveying roller 5, the point-broken roll bag has tension at the point-broken part. The breaking rod 4 breaks the point-broken roll bag at the point-broken part in the conveying roller 5 when the first breaking wheel 31 and the second breaking wheel 32 are rotating. Since the conveying roller 5 is arranged between the first breaking wheel 31 and the second breaking wheel 32, the breaking rod 4 has a very uniform force on the point-broken roll bag, thereby avoiding uneven force on the point-broken roll bag and causing deviation during breaking. The broken plastic bag can directly enter the winding mechanism b for winding.

[0023] In the preferred embodiment, a plurality of spaced-apart breaking rods 4 are provided between the first breaking wheel 31 and the second breaking wheel 32, and the plurality of breaking rods 4 take turns to break the point-break continuous roll bags, thereby improving the production effect.

[0024] In this preferred embodiment, a sensor switch 9 is provided on the bracket 1. The sensor switch 9 is an infrared sensor switch for detecting the positioning of the breaking shaft and sending a signal to the controller on the control system of the bag making machine. The controller controls the breaking action of the breaking rod.

[0025] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A breaking device for a bag making machine, characterized in that: It includes a bracket, a first drive motor, a breaking wheel and a breaking rod, the breaking wheel is rotatably mounted on the bracket, the breaking rod is mounted on the inner side of the breaking wheel, and the output shaft of the first drive motor is connected to the breaking wheel in a transmission manner; the interrupting device also includes a conveying pressure roller and a second drive motor, the breaking wheel is annular, the conveying pressure roller passes through the breaking wheel and is rotatably mounted on the bracket, and the output shaft of the second drive motor is connected to the conveying pressure roller in a transmission manner; the breaking wheel includes a first breaking wheel and a second breaking wheel, the output shaft of the first drive motor is connected to the first breaking wheel and the second breaking wheel through the first transmission wheel and the second transmission wheel respectively, and the two ends of the breaking rod are connected to the inner sides of the first breaking wheel and the second breaking wheel respectively.

2. The breaking device of the bag making machine according to claim 1, characterized in that: A plurality of spaced-apart breaking rods are arranged between the first breaking wheel and the second breaking wheel.

3. The breaking device of the bag making machine according to claim 2, characterized in that: The bracket is provided with an induction switch.

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