Adjusting and limiting device of bag making machine

Abstract

The invention discloses an adjusting and limiting device of a bag making machine, which comprises a rack and is characterized in that a sliding baffle plate mechanism is also arranged on the rack, the sliding baffle plate mechanism comprises a left baffle plate, a right baffle plate, a plurality of guide rods and an adjusting and positioning mechanism, the plurality of guide rods are transversely arranged on the rack, and the adjusting and positioning mechanism is arranged on the left baffle plate and the right baffle plate. Guide rod holes are formed in the left baffle and the right baffle, the left baffle and the right baffle are arranged on the guide rods in a sliding mode through the guide rod holes, and the adjusting and positioning mechanism is connected to the left baffle and the right baffle. The plastic film centering device is simple in structure, the tedious procedure that multiple check rings need to be adjusted one by one when a plastic film is adjusted and corrected in the bag making process is solved, the plastic film can be adjusted in the middle only by twisting a hand wheel, operation is convenient, and the adjusting precision is high.

Description

Technical Field

[0001] The present invention relates to an adjusting and limiting device for a bag making machine. Background Art

[0002] The adjusting and limiting device for a bag making machine of the present invention is arranged on the feeding mechanism of a plastic bag making machine. When the width of the plastic film released by the feeding mechanism changes or when replacing the plastic film roll, the width of the baffle is adjusted to limit the left and right positions of the plastic film, and the center distance of the plastic film is made to correspond to the center distance of the sealing knife of the bag making machine, which has the functions of adjustment and limitation.

[0003] Existing bag making machines include a heat sealing knife device and a feeding device (a device for conveying the plastic film). In order to adapt to the intermittent feeding characteristics of the bag making machine, a plurality of guide rods are provided in the feeding device. The plastic film can store a certain length of plastic film when passing through the plurality of guide rods to alleviate the problem that the feeding mechanism suddenly pulls the plastic film and affects the bag making quality. In order to solve the problems of adjustment and positioning, plastic retaining rings are respectively arranged at both ends of each guide rod of the existing bag making machine. During the bag making process, the width of the plastic film often becomes wider and narrower from time to time. In this situation, generally, it is necessary to manually move the positions of the plastic retaining rings at both ends of each guide rod one by one, so that the widths of the left and right retaining rings are adapted to the plastic film, and the center distance of the plastic film is also made to correspond to the center distance of the sealing knife of the bag making machine. This manual adjustment method one by one takes a long time, and the bag making quality will be affected due to untimely adjustment during the adjustment process. Designing an adjusting and limiting device with simple and timely adjustment is a problem that people have always wanted to solve but have not solved yet. Summary of the Invention

[0004] To solve the deficiencies of the existing technology, the technical problem to be solved by the present invention is: to design an adjusting and limiting device to solve the problems of lagging adjustment and cumbersome positioning of the plastic film by the existing bag making machine, and to provide an adjusting and limiting device for a bag making machine.

[0005] To achieve the above technical purpose, the technical solution of the present invention is: an adjusting and limiting device for a bag making machine, including a frame, characterized in that: a sliding baffle mechanism is further provided on the frame. The sliding baffle mechanism includes a left baffle, a right baffle, and guide rods, and further includes a positioning mechanism. The plurality of guide rods are horizontally arranged on the frame. Guide rod holes are provided on the left baffle and the right baffle, and the left baffle and the right baffle are slidably arranged on the guide rods through the guide rod holes. The positioning mechanism is connected to the left baffle and the right baffle.

[0006] The sliding baffle includes a left baffle and a right baffle. Guide rod holes are respectively provided at positions corresponding to the plurality of guide rods on the left baffle and the right baffle for sliding the left baffle and the right baffle on the guide rods.

[0007] As a preferred technical solution, sliding sleeves are further provided on the left baffle and the right baffle.

[0008] As a further improvement, the sliding sleeve is a linear bearing. With this design, the sliding friction between the guide rod and the guide rod hole is changed to the rolling friction of the linear bearing, reducing the moving resistance of the left baffle and the right baffle on the guide rod and making the movement of the left baffle and the right baffle on the guide rod smooth.

[0009] The positioning mechanism can be a lead screw pair, a positioning screw, or a ferrule, and is used to position the left baffle and the right baffle at a certain position on the guide rod.

[0010] As a preferred technical solution, the positioning mechanism is a lead screw pair.

[0011] As a further improvement, the lead screw pair includes a double-threaded lead screw, a right-handed nut, and a left-handed nut, and a handwheel is further provided on the double-threaded lead screw. With this design, by rotating the handwheel, the left baffle and the right baffle can be moved relatively at the same time, which is not only convenient for adjustment, but also can make the center distance of the plastic film correspond to the center distance of the sealing knife of the bag-making machine, and the adjustment accuracy is high.

[0012] The technical problem actually solved by the present invention is mainly to limit the left and right positions of the plastic film through the relative movement of the left baffle and the right baffle, and to adapt to the width change of the plastic film by moving the relative position between the left baffle and the right baffle. For other structures of the feeding device of the bag-making machine, this belongs to the well-known technology for those skilled in the art and will not be elaborated here.

[0013] The beneficial effect of the present invention is that: through the sliding baffle mechanism and the positioning mechanism, the relative distance between the left baffle and the right baffle can be moved and positioned, so that the plastic film can be centered and adjusted simultaneously on multiple guide rods, which is simpler and more convenient compared with the prior art that requires adjusting the retaining rings one by one, and the centering accuracy is high. Brief Description of the Drawings

[0014] Figure 1 is the front and side schematic structural principle diagram of Embodiment 1;

[0015] Figure 2 is the left schematic structural principle diagram of Embodiment 1;

[0016] Figure 3 is the top schematic structural principle diagram of Embodiment 1;

[0017] Figure 4 and Figure 5 is the schematic working principle diagram of Embodiment 1;

[0018] Figure 6 is the schematic structural principle diagram of Embodiment 2.

[0019] In the figure: 1 - frame; 2 - sliding baffle mechanism; 21 - left baffle; 22 - right baffle; 23 - guide rod hole; 24 - guide rod; 25 - linear bearing; 3 - positioning mechanism; 31 - right - hand and left - hand screw rod; 32 - right - hand thread nut; 33 - left - hand thread nut; 34 - hand wheel; 35 - positioning screw; 4 - plastic film. Specific embodiments

[0020] To fully disclose the present invention, the technical solution of the present invention will be specifically described below with reference to two embodiments in conjunction with the accompanying drawings. In the description of the present invention, Figure 1 the left side herein is the left side of the present invention, Figure 1 and the left - right direction herein is the left - right direction of the present invention.

[0021] Embodiment 1, as shown in Figure 1 , Figure 2 , Figure 3 : The positioning mechanism 3 of Embodiment 1 is a lead screw pair, including a right - hand and left - hand screw rod 31, a right - hand thread nut 32, a left - hand thread nut 33, and a hand wheel 34; sliding sleeves are further provided on the left baffle 21 and the right baffle 22, and the sliding sleeves are linear bearings 25.

[0022] As shown in Figure 1 , Figure 2 , Figure 3 : Two plate - like bodies are provided as the left baffle 21 and the right baffle 22. Corresponding guide rod holes 23 are respectively provided on the left baffle 21 and the right baffle 22 at positions corresponding to a plurality of guide rods 24. Two linear bearings 25 are respectively installed in the guide rod holes 23 of the left baffle 21 and the right baffle 22. Guide rods 24 are respectively inserted into the guide rod holes 23 or the linear bearings 25 of the left baffle 21 and the right baffle 22; a right - hand thread nut 32 is installed at the middle position of the left baffle 21, a left - hand thread nut 33 is installed at the middle position of the right baffle 22, a right - hand and left - hand screw rod 31 is installed on the right - hand thread nut 32 and the left - hand thread nut 33, and then both ends of the plurality of guide rods 24 are fixedly installed on the frame 1, both ends of the right - hand and left - hand screw rod 31 are rotatably installed on the frame 1, a hand wheel 34 is installed at one end of the right - hand and left - hand screw rod 31, and by adjusting the right - hand thread nut 32 and the left - hand thread nut 33, the center point between the left baffle 21 and the right baffle 22 is made to correspond to the left - right center point of the sealing knife of the bag - making machine.

[0023] The working process of Embodiment 1 is as follows: As shown in Figure 4 , first, the plastic film 4 is wound around a plurality of guide rods 24, and then as shown in Figure 5As shown, when the handwheel 34 is rotated by hand, the left baffle 21 and the right baffle 22 will move relative to each other in the left - right horizontal direction, so that the distance between the left baffle 21 and the right baffle 22 is adapted to the width of the plastic film 4. At this time, the left - right center points of the plastic film 4 correspond to the left - right center points of the sealing knife of the bag - making machine. When it is necessary to replace the plastic film roll, or when the width of the plastic film 4 becomes wider or narrower, the handwheel 34 is rotated by hand to make the distance between the left baffle 21 and the right baffle 22 adapt to the width of the plastic film 4. During adjustment, only the relative position between the left baffle 21 and the right baffle 22 changes, while the center points of the left - right width of the plastic film 4 do not change and always remain corresponding to the left - right center points of the sealing knife of the bag - making machine.

[0024] Embodiment 2, as Figure 6 shown: The main difference between Embodiment 2 and Embodiment 1 is that: the lead screw pair is omitted, and the linear bearing 25 is omitted.

[0025] As Figure 6 shown: Guide rod holes 23 are respectively arranged at the positions where the left baffle 21 and the right baffle 22 correspond to a plurality of guide rods 24. At least two positioning screws 35 are arranged at the positions of the guide rod holes 23 of the left baffle 21 and the right baffle 22. Then, a plurality of guide rods 24 are inserted into the corresponding guide rod holes 23, and then both ends of the plurality of guide rods 24 are fixedly installed on the frame 1.

[0026] The specific working process of Embodiment 2 is as follows: As Figure 6 shown, the left baffle 21 and the right baffle 22 are moved by hand to make the relative distance between the left baffle 21 and the right baffle 22 equal to or close to the width of the plastic film 4, and make the center distance between the left baffle 21 and the right baffle 22 correspond to the center distance of the sealing knife of the bag - making machine. During the bag - making process, when it is found that the plastic film 4 becomes narrower or wider, first loosen the positioning screws 35 on the left baffle 21 and the right baffle 22, then manually move the left baffle 21 and the right baffle 22 left and right. After moving the left baffle 21 and the right baffle 22 to the appropriate positions, tighten the positioning screws 35 respectively.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The above-described embodiments of the present invention do not constitute a limitation to the protection scope of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An adjusting and limiting device for a bag making machine, comprising a frame (1), characterized in that: The frame (1) is also provided with a sliding baffle mechanism (2), the sliding baffle mechanism (2) comprising a left baffle (21), a right baffle (22), and a plurality of guide rods (24); and also comprises a positioning mechanism (3), the plurality of guide rods (24) being transversely arranged on the frame (1), the left baffle (21) and the right baffle (22) being provided with guide rod holes (23), the left baffle (21) and the right baffle (22) being slidably arranged on the guide rods (24) through the guide rod holes (23), and the positioning mechanism (3) being connected to the left baffle (21) and the right baffle (22).

2. The adjustment and limiting device of a bag making machine according to claim 1, characterized in that: The positioning mechanism (3) is a screw pair.

3. The adjustment and limiting device of a bag making machine according to claim 2, characterized in that: The screw pair comprises a positive and negative thread screw (31), a positive thread nut (32), and a negative thread nut (33); a hand wheel (34) is also provided on the positive and negative thread screw (31).

4. The adjusting and limiting device of a bag making machine according to claim 1, characterized in that: Sliding sleeves are also provided on the left baffle plate (21) and the right baffle plate (22).

5. The adjustment and limiting device of a bag making machine according to claim 4, characterized in that: The sliding sleeve is a linear bearing (25).

Images