Automatic positioning device for bag sealing machine

Abstract

The utility model discloses an automatic positioning device for a bag sealing machine. Comprising a vertical roller frame, an upper rotary swing type rolling structure, a lower rotary swing type rolling structure and a bag conveying main roller, wherein the upper rotary swing type rolling structure and the lower rotary swing type rolling structure are arranged at the upper position and the lower position in the vertical roller frame respectively; the bag conveying main roller is rotationally installed in the vertical roller frame on one side of the upper rotary swing type rolling structure and one side of the lower rotary swing type rolling structure; a servo drive assembly used for driving the two bag conveying main rollers to rotate synchronously in the same direction is installed on the outer wall of one side of the vertical roller frame. After the upper rotary swing type rolling structure and the lower rotary swing type rolling structure are close to the bag feeding main roller under the action of the electric pushing assembly and the first-stage belt wheel transmission structure, the upper edge opening and the bottom edge of a packaging bag are limited by the upper rotary swing type rolling structure and the lower rotary swing type rolling structure respectively; therefore, the packaging bag and a product in the packaging bag are supported by the lower rotary swing type rolling structure, and the packaging bag is prevented from drooping.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag sealing machine technical field, concretely is a kind of automatic positioning device for bag sealing machine. BACKGROUND

[0002] When bag sealing machine is heat-sealed, bag mouth positioning device plays a vital role, which ensures the accurate alignment of the bag mouth in the heat-sealing area, thereby achieving efficient and reliable sealing effect. Such devices usually include positioning clamps, guide devices, sensors and control systems. The positioning clamps are used to clamp and fix the bag mouth, the guide devices help the bag maintain the correct direction, the sensors monitor the position of the bag mouth in real time and feed back information to the control system, and the control system makes judgments based on the data of the sensors to ensure the accurate alignment of the bag mouth in the heat-sealing area and starts the heat-sealing process after successful positioning. The entire working principle is based on the combination of mechanical clamping and electronic feedback, so that the bag mouth positioning device can flexibly adapt to packaging bags of different specifications, ensuring smooth operation of the production line. Through this precise control mechanism, the bag sealing machine not only improves the sealing quality and efficiency, but also adapts to the packaging needs of various products, ultimately achieving efficient and stable production goals. However, the positioning device at the present stage moves towards the bag mouth direction under the control of linear driving elements such as air cylinders when working, until the bag mouth area to be heat-sealed is clamped by the left and right positioning clamps. At this time, the packaging bag containing the product is in a suspended state and waits for subsequent heat-sealing and cutting operations. Under the condition of heavy product specifications, the weight of the product can easily cause the packaging bag to fall out of the positioning clamps and sag. This sagging phenomenon can no longer make the bag mouth tightly contact the clamp, resulting in inaccurate alignment of the bag mouth and affecting the quality of heat-sealing. SUMMARY

[0003] The utility model aims at providing a kind of automatic positioning device for bag sealing machine, upper rotary swing type roller structure, lower rotary swing type roller structure are respectively set at the position of vertical roller stand, when upper rotary swing type roller structure, lower rotary swing type roller structure are close to bag conveying main roller under the action of electric push assembly, first pulley transmission structure, the upper edge of packaging bag, bottom edge is respectively limited by upper rotary swing type roller structure, lower rotary swing type roller structure, so as to use lower rotary swing type roller structure to support packaging bag and its internal product, avoid packaging bag sag, so that packaging bag bag mouth is stably heat-sealed and cut, to solve the problems raised in the above background.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: A kind of automatic positioning device for bag sealing machine, including vertical roller stand, the upper position swing type roller structure and the lower position swing type roller structure respectively arranged at upper and lower positions inside vertical roller stand, and the upper position swing type roller structure and the lower position swing type roller structure one side inside vertical roller stand rotationally installed bag feeding main roller, servo drive assembly for driving two bag feeding main rollers synchronous same direction rotation is installed on the side outer wall of vertical roller stand, bag guide roller is rotationally installed in the vertical roller stand above the upper position swing type roller structure, electric push assembly for driving the operation of upper position swing type roller structure is arranged on the side outer wall of vertical roller stand, servo drive assembly one side vertical roller stand outer wall is installed for making the upper position swing type roller structure and the lower position swing type roller structure synchronous action first pulley transmission structure.

[0005] Preferably, the servo drive assembly is composed of a servo motor and a second pulley transmission structure, the servo motor is installed on the side outer wall of the vertical roller stand through a right-angle motor base, the drive shaft of the servo motor is fixedly connected with one end of one of the bag feeding main rollers through a shaft coupling, and the second pulley transmission structure is used to connect the drive shaft of the servo motor and one end of the other bag feeding main roller.

[0006] Preferably, the upper position swing type roller structure and the lower position swing type roller structure have the same structure, the upper position swing type roller structure comprises a rotating shaft rotationally installed on the left and right inner walls of the vertical roller stand, swing arms fixed on the opposite ends of the two rotating shafts, and a rubber sub-roller rotationally installed between the two swing arms in the X-axis direction.

[0007] Preferably, the left and right outer walls of the vertical roller stand are both provided with arc-shaped hollow grooves through which the ends of the rubber sub-rollers pass, and the centers of the arc-shaped hollow grooves are concentric with the centers of the rotating shafts.

[0008] Preferably, the electric push assembly comprises an inverted U-shaped seat fixed on the side outer wall of the vertical roller stand, a cylinder seat hingedly installed at the bottom end of the inverted U-shaped seat, and an electric push rod fixed in the cylinder seat, the piston rod top end of the electric push rod is hingedly connected with one end of the rubber sub-roller.

[0009] Preferably, the rotating shaft drives the lower position swing type roller structure to move synchronously through the first pulley transmission structure.

[0010] Compared with the prior art, the automatic positioning device for the bag sealing machine has the advantages that: the upper rotary swing roller pressing structure and the lower rotary swing roller pressing structure are driven by the electric top pushing assembly and the primary pulley transmission structure to move close to the bag feeding main roller, the upper edge and the bottom edge of the packaging bag are respectively limited by the upper rotary swing roller pressing structure and the lower rotary swing roller pressing structure, the lower rotary swing roller pressing structure supports the packaging bag and the product in the packaging bag to prevent the packaging bag from sagging, the lower rotary swing roller pressing structure and the bag feeding main roller can effectively support the weight of the packaging bag and the product in the packaging bag when the lower rotary swing roller pressing structure moves close to one of the bag feeding main rollers and tightly presses the lower half of the packaging bag, the upper rotary swing roller pressing structure limits the upper edge of the packaging bag with the other bag feeding main roller to ensure that the bag opening is correctly aligned during the heat sealing process, thereby realizing high-quality sealing operation and preventing heat sealing failure caused by inaccurate alignment, and the upper rotary swing roller pressing structure and the lower rotary swing roller pressing structure can uniformly apply pressure during the heat sealing process and complete the positioning and pressing of the bag, thereby significantly reducing heat sealing defects caused by improper alignment or sagging of the bag opening and reducing the generation of defective products. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a front view structural schematic diagram of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the utility model Figure 1 ;

[0014] Figure 4 It is a three-dimensional sectional structural schematic diagram of the utility model;

[0015] Figure 5 It is a three-dimensional structural schematic Figure 2 .

[0016] In the drawing: 1, vertical roller frame; 2, bag guide roller; 3, upper rotary swing roller pressing structure; 301, rotating shaft; 302, swing arm; 303, rubber auxiliary roller; 4, lower rotary swing roller pressing structure; 5, electric top pushing assembly; 501, inverted U-shaped seat; 502, cylinder seat; 503, electric push rod; 6, primary pulley transmission structure; 7, bag feeding main roller; 8, servo drive assembly; 801, servo motor; 802, secondary pulley transmission structure. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of automatic positioning device for bag sealing machine, including vertical roller stand 1, the upper position swing type roller structure 3 of being respectively arranged in upper and lower positions in vertical roller stand 1 inside, lower swing type roller structure 4 and the upper position swing type roller structure 3, lower swing type roller structure 4 side vertical roller stand 1 inside rotation installation of bag feeding main roller 7, servo drive assembly 8 for driving two bag feeding main roller 7 synchronous same direction rotation is installed on the outer wall of one side of vertical roller stand 1, bag guide roller 2 is rotationally installed in the inside of vertical roller stand 1 above upper position swing type roller structure 3, electric push assembly 5 for driving upper position swing type roller structure 3 work is provided on the outer wall of one side of vertical roller stand 1, servo drive assembly 8 side vertical roller stand 1 outer wall is installed with the first pulley transmission structure 6 for making upper position swing type roller structure 3, lower swing type roller structure 4 synchronous action;

[0019] Servo drive assembly 8 is composed of servo motor 801, two-stage pulley transmission structure 802, servo motor 801 is installed on the outer wall of one side of vertical roller stand 1 by right-angle motor base, the drive shaft of servo motor 801 is fixedly connected with the end of one of bag feeding main roller 7 by coupling, two-stage pulley transmission structure 802 is used for connecting the drive shaft of servo motor 801 and the end of another bag feeding main roller 7;After upper position swing type roller structure 3, lower swing type roller structure 4 and bag feeding main roller 7 are separated, servo motor 801 drives two bag feeding main roller 7 synchronous rotation by two-stage pulley transmission structure 802;

[0020] Bag guide roller 2 leads packaging bag from material roll and correctly guides to the heat sealing area above upper position swing type roller structure 3, the structure of upper position swing type roller structure 3, lower swing type roller structure 4 is same, and upper position swing type roller structure 3 includes rotationally installed pivot shaft 301 on the left and right inner wall of vertical roller stand 1, two pivot shafts 301 opposite end fixed swing arm 302 and rubber sub roller 303 rotationally installed between two swing arms 302 in X axis direction;

[0021] The left and right outer walls of the vertical roller frame 1 are provided with arc-shaped hollow grooves for the end of the rubber sub-roller 303 to pass through, and the center of the arc-shaped hollow grooves is concentric with the center of the rotating shaft 301. The electric push assembly 5 includes a reversed U-shaped seat 501 fixed on one side of the outer wall of the vertical roller frame 1, a cylinder seat 502 hingedly installed at the bottom end of the reversed U-shaped seat 501, and an electric push rod 503 fixed inside the cylinder seat 502. The piston rod of the electric push rod 503 is hingedly connected to one end of the rubber sub-roller 303. When the electric push assembly 5 drives the upper and lower swing roller pressing structures 3 and 4 to gradually approach the bag conveying main roller 7 and actively press the packaging bag, the piston rod of the electric push rod 503 is elongated and pushes the upper swing roller pressing structure 3 to move. During this process, the electric push rod 503 and the cylinder seat 502 will swing around the reversed U-shaped seat 501. Through the electric control of the electric push rod 503, accurate pressure and position adjustment can be achieved to ensure the stability and consistency of the bag pressing process.

[0022] A motor controller is installed on one side of the outer wall of the vertical roller frame 1 to control the operation of the electric push rod 503 and the servo motor 801.

[0023] The swing arm 302 of the upper swing roller pressing structure 3 is pushed by the piston rod of the electric push rod 503 and drives the rotating shaft 301 to rotate. At this time, the rubber sub-roller 303 will gradually approach the bag conveying main roller 7 under the push of the electric push rod 503 until the packaging bag is pressed tightly by the bag conveying main roller 7 and the rubber sub-roller 303. At this time, the upper bag opening of the packaging bag is tightly closed.

[0024] The rotating shaft 301 drives the lower swing roller pressing structure 4 to move synchronously through the primary pulley transmission structure 6. When one of the rotating shafts 301 is rotated, it drives the lower swing roller pressing structure 4 to move through the primary pulley transmission structure 6, so that the upper and lower swing roller pressing structures 3 and 4 move in unison, and then the lower swing roller pressing structure 4 and the bag conveying main roller 7 below actively press the bottom of the packaging bag and support the packaging bag.

[0025] In use, the bag mouth heat sealing mechanism is arranged in the region between the upper swing roller structure 3 and the bag guide roller 2, and the packaging bag needs to pass through the bag guide roller 2 and then pass through the upper swing roller structure 3, the lower swing roller structure 4 and the side close to the bag conveying main roller 7 from top to bottom. At this time, the bag guide roller 2 is used to guide the packaging bag from the material roll. After the packaging bag is guided to the heat sealing area of the bag mouth heat sealing mechanism, the worker needs to carefully observe the alignment of the bag to ensure that the bag mouth is located between the upper swing roller structure 3 and one of the bag conveying main rollers 7. Then the worker starts the electric push assembly 5 to drive the upper swing roller structure 3 to move towards the bag conveying main roller 7 until the upper swing roller structure 3 presses the packaging bag on the bag conveying main roller 7 to close the bag mouth. During this process, the upper swing roller structure 3 drives the lower swing roller structure 4 to move synchronously through the first pulley transmission structure 6. At this time, the bottom edge of the packaging bag is limited by the lower swing roller structure 4 to ensure that the bottom of the bag does not sag due to the weight of the product and can remain stable during the heat sealing process. After the heat sealing is completed, the electric push assembly 5 is reset to separate the upper swing roller structure 3 and the lower swing roller structure 4 from the bag conveying main roller 7. Then the heat sealed packaging bag continues to move downward under the driving of the electric push assembly 5 and the bag conveying main roller 7 and performs the cutting action in the next station.

Claims

1. An automatic positioning device for a bag sealer, characterized by: The utility model relates to a vertical roller frame (1), the upper position of vertical roller frame (1) inside up and down respectively sets up the upper rotatory pendulum formula roll -press structure (3), the lower rotatory pendulum formula roll -press structure (4) and the upper rotatory pendulum formula roll -press structure (3), the lower rotatory pendulum formula roll -press structure (4) one side vertical roller frame (1) inside rotation mounting's send bag main roller (7), vertical roller frame (1) one side outer wall on installation is used for driving two send bag main roller (7) synchronous same direction rotation's servo drive assembly (8), the upper rotatory pendulum formula roll -press structure (3) upper vertical roller frame (1) inside rotation mounting has the bag guide roller (2), vertical roller frame (1) one side outer wall on set up is used for driving the upper rotatory pendulum formula roll -press structure (3) work's electric push assembly (5), servo drive assembly (8) one side vertical roller frame (1) outer wall on installation is used for making the upper rotatory pendulum formula roll -press structure (3), the lower rotatory pendulum formula roll -press structure (4) synchronous action's first belt wheel transmission structure (6).

2. An automatic positioning device for a bag sealer according to claim 1, characterized in that: The servo drive assembly (8) is composed of a servo motor (801) and a second belt wheel transmission structure (802). The servo motor (801) is installed on one side outer wall of the vertical roller frame (1) through a right-angle motor base. A driving shaft of the servo motor (801) is fixedly connected with one end of one of the bag main rollers (7) through a shaft coupling. The second belt wheel transmission structure (802) is used for connecting the driving shaft of the servo motor (801) and one end of the other bag main roller (7).

3. An automatic positioning device for a bag sealer as defined in claim 1, characterized in that: The upper rotatory pendulum formula roll -press structure (3) and the lower rotatory pendulum formula roll -press structure (4) have the same structure. The upper rotatory pendulum formula roll -press structure (3) comprises a rotating shaft (301) installed on left and right inner walls of the vertical roller frame (1), two swing arms (302) fixed on opposite ends of the rotating shaft (301), and a rubber sub-roller (303) rotatably installed between the two swing arms (302) in the X-axis direction.

4. An automatic positioning device for a bag sealer as claimed in claim 3, characterized in that: Arc-shaped hollow grooves are arranged on left and right outer walls of the vertical roller frame (1) for the end of the rubber sub-roller (303) to pass through. The center of the arc-shaped hollow groove is concentric with the center of the rotating shaft (301).

5. An automatic positioning device for a bag sealer as defined in claim 3, wherein: The electric push assembly (5) comprises an inverted U-shaped seat (501) fixed on one side outer wall of the vertical roller frame (1), a cylinder seat (502) hingedly installed at the bottom end of the inverted U-shaped seat (501), and an electric push rod (503) fixed in the cylinder seat (502). The piston rod top end of the electric push rod (503) is hingedly connected with one end of the rubber sub-roller (303).

6. An automatic positioning device for a bag sealer as defined in claim 3, wherein: The rotating shaft (301) drives the lower rotatory pendulum formula roll -press structure (4) to synchronously act through the first belt wheel transmission structure (6).

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