Back film drawing mechanism of packaging machine

Abstract

The utility model discloses a back surface film drawing mechanism of a packaging machine, which comprises a film cutting fixing plate, and a vertical plate is arranged at one end of the film cutting fixing plate; the servo motor is fixedly connected to the interior of the vertical plate, a coupler is arranged at the output end of the servo motor, a first gear is arranged at the other end of the coupler, and a first rotating shaft is arranged in the center of the first gear; the linear bearing seat is arranged at one end of the film cutting fixing plate, a linear bearing is arranged in the linear bearing seat, a second rotating shaft is arranged in the linear bearing, a second gear is arranged at one end of the second rotating shaft, and rubber rollers are arranged at one end of the first rotating shaft and one end of the second rotating shaft. The plastic film is located between the two rubber rollers. Compared with the prior art, the film drawing device has the advantages that the speed can be fed back through the encoder of the servo motor, the speed of the film drawing shaft is adjusted to correct slipping, the probability of skewing and empty package is reduced, and therefore the packaging precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a packaging machine film drawing technical field, specifically a packaging machine back film drawing mechanism. BACKGROUND

[0002] Traditional packaging machine film drawing mechanism and film drawing mode precision is lower, automation degree is not high, flexibility is poor, cannot satisfy high precision film drawing demand and production demand. Because the action of feeding mechanism and film drawing mechanism is not coordinated, it can lead to the condition of less material or empty bag of packaging bag, influences production efficiency. Meanwhile because of the influence of different temperature and material factors, the friction of the belt driven by the film drawing shaft can change, leads to the phenomenon of slipping between the film drawing belt and the film, influences the precision of equipment, thereby the situation such as packaging skew occurs.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms prior art that is publicly known. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects, and the packaging machine back film drawing mechanism can adjust the film drawing shaft speed correction slip through the encoder feedback speed of the servo motor, reduce the probability of skew and empty bag, thereby improving the precision and efficiency of packaging.

[0005] In order to solve the above problems, the technical scheme of the utility model is as follows: a packaging machine back film drawing mechanism, comprising a film cutting fixed plate, one end of the film cutting fixed plate is provided with a vertical plate;

[0006] A servo motor is fixedly connected in the vertical plate, an output end of the servo motor is provided with a shaft coupling, the other end of the shaft coupling is provided with a gear one, and the center of the gear one is provided with a rotating shaft one;

[0007] A linear bearing seat is arranged at one end of the film cutting fixed plate, the linear bearing seat is provided with a linear bearing in the inside, the linear bearing is provided with a rotating shaft two in the inside, one end of the rotating shaft two is provided with a gear two, and one end of the rotating shaft one and the rotating shaft two is provided with a rubber roller;

[0008] A plastic film is located between the two rubber rollers.

[0009] Further, one end of the film cutting fixed plate is provided with an air cylinder, the air cylinder is fixedly connected with the linear bearing seat at the telescopic end, one end of the film cutting fixed plate is provided with a guide rail, the linear bearing seat is slidably connected with the guide rail, and the linear bearing seat is provided with an oil pressure buffer at both ends.

[0010] Further, a through groove is arranged at the center of the film cutting fixing plate, and the rotating shaft one and the rotating shaft two penetrate the through groove.

[0011] Further, the gear one is engaged with the gear two.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] (1) the utility model discloses can improve the packing precision, promote the packing speed, pass through the encoder feedback speed of servo motor, adjust the film pulling shaft speed correction slip, reduce the probability of appearing skew and empty package. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of packaging machine back film pulling mechanism of the utility model Figure One .

[0015] Figure 2 It is a kind of packaging machine back film pulling mechanism of the utility model Figure Two .

[0016] As shown in the figure: 1, servo motor;2, gear one;3, gear two;4, cylinder;5, oil buffer;6, linear bearing seat;7, film cutting fixing plate;8, shaft coupling;9, rubber roller;10, plastic film. DETAILED DESCRIPTION

[0017] The specific embodiment of the utility model will be further described below in conjunction with the drawings.

[0018] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0019] In order to make the content of the utility model more easily understood clearly, the technical solutions in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments.

[0020] Example one

[0021] As Figures 1-2As shown, a packaging machine back film pulling mechanism, including a film cutting fixed plate 7, a vertical plate is installed at one end of the film cutting fixed plate 7, a servo motor 1 is fixedly installed inside the vertical plate, a shaft coupling 8 is installed at the output end of the servo motor 1, a gear one 2 is installed at the other end of the shaft coupling 8, a rotating shaft one is installed at the center of the gear one 2, a linear bearing seat 6 is arranged at one end of the film cutting fixed plate 7, a linear bearing is installed inside the linear bearing seat 6, a rotating shaft two is installed inside the linear bearing, a gear two 3 is installed at one end of the rotating shaft two, rubber rollers 9 are installed at one end of the rotating shaft one and the rotating shaft two, the gear one 2 is connected with the gear two 3 in meshing, when the servo motor 1 is started, the gear one 2 can be driven to rotate through the shaft coupling 8, and then the meshed gear two 3 is synchronously rotated, the two rubber rollers 9 are driven to rotate through the rotating shaft one and the rotating shaft two, and the plastic film 10 between the two rubber rollers 9 can drive the plastic film 10 to move downward.

[0022] A cylinder 4 is installed at one end of the film cutting fixed plate 7, the telescopic end of the cylinder 4 is fixedly connected with the linear bearing seat 6, a guide rail is installed at one end of the film cutting fixed plate 7, the linear bearing seat 6 is slidably connected with the guide rail, oil pressure buffers 5 are installed at two ends of the linear bearing seat 6, the cylinder 4 drives the linear bearing seat 6 to move, and then drives the rubber rollers 9 to move, the distance between the rubber rollers 9 is adjusted through the oil pressure buffers 5, and the force borne by the plastic film when being pressed can be adjusted.

[0023] A through slot is formed at the center of the film cutting fixed plate 7, and the rotating shaft one and the rotating shaft two penetrate through the through slot.

[0024] In specific use, the servo motor 1 is started to run, the gear one 2 is driven to rotate through the shaft coupling 8, the gear one 2 and the gear two 3 are meshed and driven, the operation of the rubber rollers 9 is controlled through the gear two 3, the linear bearing seat 6 is controlled to move by the cylinder 4, the distance between the rubber rollers 9 is adjusted through the oil pressure buffers 5, the force borne by the plastic film when being pressed can be adjusted, finally the plastic film 10 is driven to move downward by the rotation of the rubber rollers 9, and the film pulling action is completed.

[0025] The electrical components appearing in the text are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer, and the detailed description of the known functions and known components is omitted in the specific embodiment of the disclosure. In order to ensure the compatibility of the device, the operation means adopted is consistent with the parameters of the market appliances.

[0026] The above describes the utility model and its implementation mode, which is not restrictive, and the embodiment shown in the drawings is only one of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the utility model, similar structure modes and embodiments can be designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A back-side film-pulling mechanism for a packaging machine, characterized in that, include: A film cutting fixing plate (7) is provided with a vertical plate at one end; Servo motor (1), the servo motor (1) is fixedly connected inside the vertical plate, the output end of the servo motor (1) is provided with a coupling (8), the other end of the coupling (8) is provided with a gear (2), and the center of the gear (2) is provided with a rotating shaft. Linear bearing seat (6), the linear bearing seat (6) is disposed at one end of the film cutting fixing plate (7), the linear bearing seat (6) is provided with a linear bearing, the linear bearing is provided with a rotating shaft II, one end of the rotating shaft II is provided with a gear II (3), and one end of the rotating shaft I and rotating shaft II are both provided with rubber rollers (9); A plastic film (10) is located between the two rubber rollers (9).

2. The back-side film pulling mechanism of a packaging machine according to claim 1, characterized in that: The film cutting fixing plate (7) is provided with a cylinder (4) at one end. The cylinder (4) is fixedly connected to a linear bearing seat (6) at the telescopic end. The film cutting fixing plate (7) is provided with a guide rail at one end. The linear bearing seat (6) is slidably connected to the guide rail. The linear bearing seat (6) is provided with hydraulic buffers (5) at both ends.

3. The back-side film pulling mechanism of a packaging machine according to claim 1, characterized in that: The cutting plate (7) has a through groove at its center, and the first and second rotating shafts pass through the through groove.

4. The back-side film pulling mechanism of a packaging machine according to claim 1, characterized in that: The gear one (2) meshes with the gear two (3).

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