Plastic bag conveying and tensioning mechanism

Abstract

The utility model discloses a plastic bag conveying and tensioning mechanism, and relates to the technical field of plastic bags, the plastic bag conveying and tensioning mechanism comprises a protection plate, the bottom of the protection plate is fixedly connected with supporting legs, the top of the protection plate is provided with a roller, and the top of the protection plate is provided with a compression roller; a tensioning device is arranged at the top of the protection plate and comprises a motor, the bottom of the motor is fixedly connected with the top of the protection plate, and an output shaft of the motor is fixedly connected with a rotating rod; according to the plastic bag tensioning device, the force for driving the rotating rod to rotate through the motor is matched with a positioning block, a telescopic rod, a fixed rod and other assemblies in the tensioning device, the effect that a supporting rod rotates to drive the positioning rod to rotate and drive a sliding block to move is achieved, and the effect that the tensioning degree of a plastic bag is adjusted by adjusting the height of the fixed rod is achieved; and it is ensured that each plastic bag can be properly tensioned in the conveying process, and therefore the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic bags, in particular to a plastic bag conveying and tensioning mechanism. Background Art

[0002] Plastic bags are bag-shaped containers made of plastic materials, used for packaging, transporting and storing various items. They are widely used in daily life and commercial fields. They are a lightweight, economical and well-sealed packaging method.

[0003] According to a disclosed plastic bag tensioning mechanism (publication number: CN208470229U), it includes a discharging active wheel and a discharging driven wheel, a front sliding plate is arranged below the discharging active wheel and the discharging driven wheel, and a blowing device is arranged above the top, and the single bag passes through the discharging active wheel and the discharging driven wheel and falls to the front of the front sliding plate, and is characterized in that two symmetrically arranged fork mechanisms are arranged in front of the discharging active wheel and the discharging driven wheel, and the fork mechanism includes a fork mounting seat, a fork driving cylinder and a fork are installed on the fork mounting seat, and the fork is connected to the fork mounting seat through a first pin shaft, a waist-shaped hole is opened at the end of the fork, and a pin is installed at the end of the piston rod of the fork driving cylinder for inserting into the waist-shaped hole. However, in the above-mentioned device, it is difficult to achieve the effect of adjusting the tension of the plastic bag by adjusting the height of the fixed rod through the mutual cooperation of components such as the discharging active wheel and the discharging driven wheel, and it is difficult to ensure that each plastic bag can be properly tensioned during the transmission process, which reduces the quality of the product and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a plastic bag conveying and tensioning mechanism, which realizes the function of driving the positioning rod to rotate and the sliding block to move by driving the supporting rod to rotate, thereby solving the existing problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a plastic bag conveying tensioning mechanism, comprising a protective plate, the bottom of the protective plate is fixedly connected with a supporting leg, the top of the protective plate is provided with a roller, and the top of the protective plate is provided with a pressing roller;

[0007] A tensioning device is provided on the top of the protective plate, and the tensioning device includes a motor, the bottom of the motor is fixedly connected to the top of the protective plate, the output shaft of the motor is fixedly connected to a rotating rod, the end of the rotating rod away from the motor is fixedly connected to the rotating rod, the top of the protective plate is fixedly connected to a positioning block, the circumferential surface of the rotating rod is fixedly connected to a telescopic rod, the end of the telescopic rod away from the rotating rod is fixedly connected to a fixed rod, the top of the protective plate is slidably connected to a slider, the circumferential surface of the telescopic rod is fixedly connected to a support rod, the circumferential surface of the support rod is rotatably connected to the positioning rod, and the end of the positioning rod away from the fixed rod is rotatably connected to the side of the slider.

[0008] Furthermore, the side surfaces of the positioning block are rotatably connected to the two ends of the rotating rod, the number of the telescopic rods is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate, and the number of the positioning blocks is set to several, two by two in a group, and they are symmetrical to each other along the vertical center axis of the protective plate. The tension of the plastic bag during the conveying process can be automatically adjusted without manual adjustment, thereby improving production efficiency.

[0009] Furthermore, a gear is fixedly connected to the circumferential surface of the rotating rod, a rack is slidably connected to the top of the protective plate, one end of the rack is fixedly connected to a fixed block, the top of the protective plate is fixedly connected to a hydraulic cylinder, one end of the hydraulic cylinder is slidably connected to a force rod via a piston, the other end of the hydraulic cylinder is slidably connected to a hydraulic rod via a piston, and one end of the hydraulic rod is fixedly connected to a clamp, ensuring that each plastic bag can be properly tensioned during the transmission process, thereby improving the quality of the product.

[0010] Furthermore, the side surface of the rack meshes with the side surface of the gear, the force-bearing rod is located on the motion trajectory of the fixed block, and the number of the hydraulic cylinders is set to two, which are symmetrical with each other along the vertical center axis of the protective plate, ensuring that the tension of the plastic bag can be precisely controlled, thereby improving product quality.

[0011] Furthermore, the number of the force-bearing rods is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate. The shape of the hydraulic cylinder is set to be L-shaped, which can adjust the tensioning force to adapt to plastic bags of different types or sizes.

[0012] Furthermore, the number of the hydraulic rods is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate. The mechanism can remain stable during operation and is not prone to vibration or swing, which helps to ensure the stability and reliability of the transmission process.

[0013] Furthermore, the shape of the hydraulic rod is set to be L-shaped, the number of the clamps is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate, thereby reducing the risk of accidents and improving production safety.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model uses the force of the motor to drive the rotating rod to rotate, and cooperates with the positioning block, telescopic rod and fixed rod in the tensioning device, so as to realize the role of driving the positioning rod to rotate and driving the slider to move by rotating the support rod, and achieves the effect of adjusting the tension of the plastic bag by adjusting the height of the fixed rod, ensuring that each plastic bag can be properly tensioned during the transmission process, thereby improving the quality of the product.

[0016] 2. The utility model realizes that the force of the gear driven by the rotation of the rotating rod cooperates with the components such as the hydraulic cylinder, hydraulic rod and force-bearing rod in the tensioning device, realizes the displacement of the clamp driven by the displacement of the hydraulic rod, and then clamps the plastic bag through the clamp, thereby achieving the effect of pulling the plastic bag laterally to increase the tension, ensuring that the tension of the plastic bag can be accurately controlled, thereby improving product quality.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0020] Figure 2 It is a three-dimensional side view structural schematic diagram of the pressing roller of the utility model;

[0021] Figure 3 It is a three-dimensional side view structural schematic diagram of the slider of the utility model;

[0022] Figure 4 It is a three-dimensional enlarged structural schematic diagram of the hydraulic rod of the utility model;

[0023] Figure 5 For the utility model Figure 1 Schematic diagram of the three-dimensional enlarged structure of A in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 101. Protective plate; 102. Support leg; 103. Roller; 104. Pressure roller; 2. Tensioning device; 201. Motor; 202. Rotating rod; 203. Positioning block; 204. Rotating rod; 205. Telescopic rod; 206. Fixed rod; 207. Support rod; 208. Slider; 209. Positioning rod; 210. Gear; 211. Rack; 212. Fixed block; 213. Hydraulic cylinder; 214. Force rod; 215. Hydraulic rod; 216. Clamp. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 The utility model is a plastic bag conveying tensioning mechanism, comprising a protective plate 101, a supporting leg 102 is fixedly connected to the bottom of the protective plate 101, a roller 103 is arranged on the top of the protective plate 101, and a pressing roller 104 is arranged on the top of the protective plate 101;

[0028] A tensioning device 2 is provided at the top of the protective plate 101, and the tensioning device 2 includes a motor 201, the bottom of the motor 201 is fixedly connected to the top of the protective plate 101, the output shaft of the motor 201 is fixedly connected to a rotating rod 202, the end of the rotating rod 202 away from the motor 201 is fixedly connected to a rotating rod 204, the top of the protective plate 101 is fixedly connected to a positioning block 203, the circumferential surface of the rotating rod 204 is fixedly connected to a telescopic rod 205, the end of the telescopic rod 205 away from the rotating rod 204 is fixedly connected to a fixed rod 206, the top of the protective plate 101 is slidably connected to a slider 208, the circumferential surface of the telescopic rod 205 is fixedly connected to a support rod 207, the circumferential surface of the support rod 207 is rotatably connected to a positioning rod 209, and the end of the positioning rod 209 away from the fixed rod 206 is rotatably connected to the side of the slider 208.

[0029] The side surfaces of the positioning block 203 are rotatably connected to the two ends of the rotating rod 204. The number of telescopic rods 205 is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate 101. The number of positioning blocks 203 is set to a plurality of groups of two, and they are symmetrical to each other along the vertical center axis of the protective plate 101. The tension of the plastic bag during the transmission process can be automatically adjusted without manual adjustment, thereby improving production efficiency.

[0030] A gear 210 is fixedly connected to the circumferential surface of the rotating rod 202, a rack 211 is slidably connected to the top of the protective plate 101, one end of the rack 211 is fixedly connected to a fixed block 212, a hydraulic cylinder 213 is fixedly connected to the top of the protective plate 101, one end of the hydraulic cylinder 213 is slidably connected to a force rod 214 through a piston, the other end of the hydraulic cylinder 213 is slidably connected to a hydraulic rod 215 through a piston, one end of the hydraulic rod 215 is fixedly connected to a clamp 216, ensuring that each plastic bag can be properly tensioned during the transmission process, thereby improving the quality of the product.

[0031] The side of the rack 211 meshes with the side of the gear 210, the force-bearing rod 214 is located on the motion trajectory of the fixed block 212, the number of hydraulic cylinders 213 is set to two, and they are symmetrical along the vertical center axis of the protective plate 101, ensuring that the tension of the plastic bag can be precisely controlled, thereby improving product quality.

[0032] The number of the force-bearing rods 214 is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate 101. The shape of the hydraulic cylinder 213 is set to be L-shaped, which can adjust the tensioning force to adapt to plastic bags of different types or sizes.

[0033] The number of hydraulic rods 215 is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate 101. The mechanism can remain stable during operation and is not prone to vibration or swing, which helps to ensure the stability and reliability of the transmission process.

[0034] The shape of the hydraulic rod 215 is set to be L-shaped, and the number of the clamps 216 is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate 101, which reduces the risk of accidents and improves production safety.

[0035] A specific application of this embodiment is as follows: the application allows the plastic bag to pass between two pressure rollers 104, be wound around the first roller 103, and then be pulled to the circumferential surface of the second roller 103 through the fixed rod 206, and the rotating rod 202 is driven by the motor 201 to rotate, and then the rotating rod 202 is rotated to drive the rotating rod 204 to rotate, and the rotating rod 204 is rotated to drive the telescopic rod 205 to rotate, and then the telescopic rod 205 is rotated to drive the fixed rod 206 to rotate, and the telescopic rod 205 is rotated to drive the support rod 207 to rotate, and then the support rod 207 is rotated to drive the positioning rod 209 to rotate and drive the slider 208 to move, so as to achieve the height adjustment by adjusting the fixed rod 206. In order to adjust the tension of the plastic bag, the rotating rod 202 is rotated to drive the gear 210 to rotate, and the gear 210 is rotated to drive the rack 211 to move horizontally, and the displacement of the rack 211 drives the fixed block 212 to move, and the fixed block 212 is displaced to squeeze the force-bearing rod 214, so that the force-bearing rod 214 moves inward to squeeze the piston inside the hydraulic cylinder 213, and the piston inside the hydraulic cylinder 213 pushes the liquid inside it, and the liquid inside the hydraulic cylinder 213 pushes another piston to move, and the piston pushes the hydraulic rod 215 to move, and the displacement of the hydraulic rod 215 drives the clamp 216 to move, and then the plastic bag is clamped by the clamp 216, so that the plastic bag is pulled laterally to increase the tension.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A plastic bag conveying and tensioning mechanism, comprising a protective plate (101), characterized in that: The bottom of the protective plate (101) is fixedly connected to a supporting leg (102), the top of the protective plate (101) is provided with a roller (103), and the top of the protective plate (101) is provided with a pressing roller (104); A tensioning device (2) is provided on the top of the protective plate (101), and the tensioning device (2) comprises a motor (201), the bottom of the motor (201) is fixedly connected to the top of the protective plate (101), the output shaft of the motor (201) is fixedly connected to a rotating rod (202), the end of the rotating rod (202) away from the motor (201) is fixedly connected to a rotating rod (204), the top of the protective plate (101) is fixedly connected to a positioning block (203), and the circular portion of the rotating rod (204) is fixedly connected to the top of the protective plate (101). A telescopic rod (205) is fixedly connected to the circumferential surface, and one end of the telescopic rod (205) away from the rotating rod (204) is fixedly connected to the fixed rod (206). The top of the protective plate (101) is slidably connected to a slider (208). The circumferential surface of the telescopic rod (205) is fixedly connected to a support rod (207). The circumferential surface of the support rod (207) is rotatably connected to a positioning rod (209). One end of the positioning rod (209) away from the fixed rod (206) is rotatably connected to the side of the slider (208).

2. A plastic bag conveying and tensioning mechanism according to claim 1, characterized in that: The side surfaces of the positioning block (203) are rotatably connected to the two ends of the rotating rod (204); the number of the telescopic rods (205) is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate (101); the number of the positioning blocks (203) is set to a plurality, in groups of two, and they are symmetrical to each other along the vertical center axis of the protective plate (101).

3. A plastic bag conveying and tensioning mechanism according to claim 2, characterized in that: The circumferential surface of the rotating rod (202) is fixedly connected to a gear (210), the top of the protective plate (101) is slidably connected to a rack (211), one end of the rack (211) is fixedly connected to a fixed block (212), the top of the protective plate (101) is fixedly connected to a hydraulic cylinder (213), one end of the hydraulic cylinder (213) is slidably connected to a force-bearing rod (214) via a piston, the other end of the hydraulic cylinder (213) is slidably connected to a hydraulic rod (215) via a piston, and one end of the hydraulic rod (215) is fixedly connected to a clamp (216).

4. A plastic bag conveying and tensioning mechanism according to claim 3, characterized in that: The side surface of the rack (211) meshes with the side surface of the gear (210), the force-bearing rod (214) is located on the movement track of the fixed block (212), and the number of the hydraulic cylinders (213) is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate (101).

5. A plastic bag conveying and tensioning mechanism according to claim 4, characterized in that: The number of the force-bearing rods (214) is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate (101), and the shape of the hydraulic cylinder (213) is set to be L-shaped.

6. A plastic bag conveying and tensioning mechanism according to claim 5, characterized in that: The number of the hydraulic rods (215) is set to two, and they are symmetrical to each other along the vertical center axis of the protective plate (101).

7. A plastic bag conveying and tensioning mechanism according to claim 6, characterized in that: The shape of the hydraulic rod (215) is set to be L-shaped, and the number of the clamps (216) is set to be two, and they are symmetrical to each other along the vertical center axis of the protective plate (101).

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