PE film stretching device

Abstract

The utility model discloses a PE (Poly Ethylene) film stretching device, which comprises a heating insulation box and an unloading and loading mechanism, and the unloading and loading mechanism comprises a bracket, a rolling shaft, a rolling shaft rotation driving device, a material pushing plate, a material pushing plate translation driving device, a bearing groove block, a bearing groove block lifting driving device, a material clamping manipulator and a manipulator lifting driving device. After a material roll is wound, the material pushing plate translation driving device can drive the material pushing plate to translate, so that the material pushing plate pushes the material roll out of the winding shaft, in the process, the bearing groove block can descend to avoid the position, after the material roll is pushed out, the two material clamping manipulators can move to the position above a discharging part and clamp an empty material barrel, and then the material pushing plate retreats and resets. And the manipulator follows and sleeves the empty charging barrel on the winding shaft, so that automatic discharging of the PE film material roll and automatic feeding of the charging barrel are realized, manual operation is not needed, the labor intensity of workers is greatly reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE film stretching equipment, and more specifically, to a PE film stretching device. Background Art

[0002] PE film, also known as PE protective film, is the simplest macromolecular organic compound and the most widely used macromolecular material in the world today. PE protective film uses special polyethylene (PE) plastic film as the base material and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to different densities. High-transparency PE film refers to a PE protective film with high transparency.

[0003] During the production of PE film, it is necessary to use stretching equipment to stretch the PE film to make the PE film thinner and more transparent. Most of the existing PE film stretching equipment requires workers to manually remove the material roll from the winding shaft after winding is completed. Manual operation is troublesome, time-consuming and labor-intensive, and the labor intensity of workers is high, which greatly reduces production efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide a PE film stretching device.

[0005] To achieve the above-mentioned purpose, the utility model provides a PE film stretching device, comprising a heating and heat preservation box and a unloading and loading mechanism, the inlet end of the heating and heat preservation box is provided with a feeding port, the outlet end of the heating and heat preservation box is provided with a discharging port, and a plurality of upper rotating shafts and a lower rotating shaft are rotatably connected between the two inner side walls of the heating and heat preservation box, and the upper rotating shaft and the lower rotating shaft are staggered up and down along the feeding direction of the heating and heat preservation box. The unloading and loading mechanism is located at the discharging end of the heating and heat preservation box, and the unloading and loading mechanism comprises a bracket, a winding shaft, a winding shaft rotation driving device, a pushing plate, a pushing plate translation driving device, a supporting groove block, a supporting groove block lifting driving device, a clamping manipulator and a manipulator lifting driving device. The winding shaft is located at the discharging port of the heating and heat preservation box, one end of the winding shaft is rotatably connected to the bracket, the winding shaft rotation driving device is installed on the bracket and is transmission connected to one end of the winding shaft, and the other end of the winding shaft is installed with a bearing. The support groove block is U-shaped and is located below the bearing, and the support groove block lifting drive device is installed on the bracket and is transmission connected with the support groove block to drive it to move up and down. The push plate is longitudinally arranged and located at one end of the winding shaft, and the lower end of the push plate is provided with a through hole for the winding shaft to pass through. The through hole of the push plate is away from the bearing. A plurality of rollers are distributed in a ring shape with the central axis of the through hole as the center. The push plate translation drive device is installed on the bracket and is transmission connected with the push plate. The upper end of the push plate is connected with a translation plate located above the winding shaft and parallel to the winding shaft. The manipulator lifting drive device is provided with two and is installed at both ends of the lower surface of the translation plate, and the clamping manipulator is provided with two and is respectively installed at the lower ends of their corresponding manipulator lifting drive devices. When the push plate translation drive device drives the push plate to translate, the push plate translates along the winding shaft, and the rollers on the push plate can roll in contact with the surface of the winding shaft.

[0006] Preferably, the winding shaft rotation driving device is configured as a rotary motor, and the rotary motor is mounted on a bracket and is drivingly connected to one end of the winding shaft.

[0007] Preferably, the push plate translation drive device includes a screw, a nut and a screw motor, the screw is rotatably mounted on the bracket, the screw motor is mounted on the bracket and is transmission-connected to the screw, and the nut is threadedly connected to the screw and connected to the push plate.

[0008] Preferably, the supporting slot block lifting drive device is configured as a supporting slot block lifting cylinder.

[0009] Preferably, the material clamping robot comprises a clamping finger cylinder and two clamping blocks, and the clamping blocks are respectively mounted on two translational positions of the clamping finger cylinder.

[0010] Preferably, the manipulator lifting drive device is configured as a manipulator lifting cylinder.

[0011] Preferably, a first slider is provided at one end of the upper surface of the translation plate away from the push plate, and a second slider is provided at the upper end of the push plate. Both the first slider and the second slider are slidably connected to a slide rail provided on the lower surface of the top plate of the bracket.

[0012] Preferably, two cooling fans are further included, which are installed on the heating and insulation box and located at the upper and lower ends of the discharge port of the heating and insulation box, and the cooling fans are located between the heating and insulation box and the unloading and loading mechanism.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model has a simple and novel structure and a reasonable design, and can realize the stretching and cooling operations of PE film. It is equipped with an unloading and loading mechanism. After the material roll is wound up, the pushing plate translation driving device can drive the pushing plate to translate, so that the pushing plate pushes the material roll out from the winding shaft. During this process, the supporting slot block can descend to avoid the position. After the material roll is pushed out, two clamping manipulators can move to the top of the unloading position and clamp the empty material barrel. Then the pushing plate retreats and resets, and the manipulator follows and puts the empty material barrel on the winding shaft to realize automatic unloading of the PE film material roll and automatic loading of the material barrel. No manual operation is required, which greatly reduces the labor intensity of workers and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a heating and heat preservation box provided in an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the unloading and loading mechanism provided by the embodiment of the utility model. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the structure of the unloading and loading mechanism provided by the embodiment of the utility model. Figure 2 ;

[0020] Figure 5 This is a schematic diagram of the structure of the unloading and loading mechanism provided by the embodiment of the utility model. Figure 3;

[0021] Figure 6 It is a cross-sectional view of a push plate provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0023] Please refer to Figures 1 to 6 The embodiment of the utility model provides a PE film stretching device, including a heating and insulation box 1 and a discharging and loading mechanism 2. The structure and working principle of each component will be described below.

[0024] The inlet end of the heating and heat preservation box 1 is provided with a material inlet 11, the outlet end of the heating and heat preservation box 1 is provided with a material outlet 12, and a plurality of upper rotating shafts 13 and lower rotating shafts 14 are rotatably connected between the two inner side walls of the heating and heat preservation box 1, and the upper rotating shafts 13 and the lower rotating shafts 14 are arranged staggered up and down along the feeding direction of the heating and heat preservation box 1. In this embodiment, a heating device is provided in the heating and heat preservation box, and the heating device 4 is composed of a heating wire and a fan. The heating wire generates heat and then blows hot air toward the PE film through the fan. Of course, in other embodiments, the heating device can also be set to other heating devices, which is not limited to this embodiment.

[0025] Preferably, in order to achieve cooling of the film material after heating and stretching, two cooling fans 3 can also be provided. The cooling fans 3 are installed on the heating and insulation box 1 and are located at the upper and lower ends of the discharge port of the heating and insulation box 1. The cooling fans 3 are located between the heating and insulation box 1 and the unloading and loading mechanism 2.

[0026] The unloading and loading mechanism 2 is located at the discharge end of the heating and insulation box 1. The unloading and loading mechanism 2 includes a bracket 21, a winding shaft 22, a winding shaft rotation drive device 23, a pushing plate 24, a pushing plate translation drive device 25, a supporting groove block 26, a supporting groove block lifting drive device 27, a material clamping manipulator 28 and a manipulator lifting drive device 29. The winding shaft 22 is located at the discharge port of the heating and insulation box 1, one end of the winding shaft 22 is rotatably connected to the bracket 21, and the winding shaft rotation drive device 23 is installed on the bracket 21 and is transmission-connected to one end of the winding shaft 22.

[0027] Preferably, the winding shaft rotation driving device 23 can be configured as a rotary motor, which is mounted on the bracket 21 and is drivingly connected to one end of the winding shaft 22 .

[0028] A bearing 221 is installed at the other end of the winding shaft 22. The supporting groove block 26 is U-shaped and located below the bearing 221. The supporting groove block lifting drive device 27 is installed on the bracket 21 and is transmission-connected to the supporting groove block 26 to drive it to move up and down.

[0029] In this embodiment, the supporting slot block lifting drive device 27 can be configured as a supporting slot block lifting cylinder.

[0030] The push plate 24 is arranged longitudinally and located at one end of the winding shaft 22. A through hole 241 is provided at the lower end of the push plate 24 for the winding shaft 22 to pass through. A plurality of rollers 242 are provided at one end of the through hole 241 of the push plate 24 away from the bearing 221 and are distributed in a ring shape with the central axis of the through hole 241 as the center. The push plate translation driving device 25 is installed on the bracket 21 and is in transmission connection with the push plate 24. When the push plate translation driving device 25 drives the push plate 24 to translate, the push plate 24 translates along the winding shaft 22, and the rollers 242 on the push plate 24 can roll in contact with the surface of the winding shaft 22.

[0031] Preferably, the push plate translation drive device 25 may include a screw 251, a nut 252 and a screw motor 253, the screw 251 can be rotatably mounted on the bracket 21, the screw motor 253 is mounted on the bracket 21 and is transmission-connected to the screw 251, and the nut 252 is threadedly connected to the screw 251 and connected to the push plate 24.

[0032] The upper end of the pushing plate 24 is connected to a translation plate 3 located above the winding shaft 22 and parallel to the translation plate 3. Two manipulator lifting drive devices 29 are provided and installed at both ends of the lower surface of the translation plate 3. Two clamping manipulators 28 are provided and installed respectively at the lower ends of their corresponding manipulator lifting drive devices 29.

[0033] Among them, the material clamping robot 28 may include a finger clamping cylinder 281 and two clamping blocks 282, and the clamping blocks 282 are respectively installed on two translational positions of the finger clamping cylinder 281. The robot lifting drive device 29 can be set as a robot lifting cylinder, and the finger clamping cylinder is a common finger clamping cylinder on the market.

[0034] In order to make the translation of the push plate and the translation plate more stable and smooth, a first slider 31 can be set at the end of the upper surface of the translation plate 3 away from the push plate 24, and a second slider 243 is set at the upper end of the push plate 24. The first slider 31 and the second slider 243 are both slidably connected to the slide rail 219 provided on the lower surface of the top plate of the bracket 21.

[0035] During operation, the PE film material enters from the feed port of the heating and insulation box and passes through the upper and lower rotating shafts in sequence. The PE film material is heated and stretched under the rotation of the rotating shaft and the heating device. Then the film material is output from the discharge port of the heating and insulation box and fixed on the winding shaft. The winding shaft rotates to roll the film material onto the barrel. When the barrel is full, the supporting groove block drops to avoid the position, and the push plate moves horizontally to push the material roll horizontally, so that the material roll moves out from one end of the winding shaft. During this process, the roller on the push plate starts Finally, it rolls in contact with the surface of the take-up shaft to support the take-up shaft and prevent the take-up shaft from being deflected due to force. After the push plate pushes out the material roll, the empty barrel can be moved to the bottom of the robot by machine or hand, and the clamping robot clamps the empty barrel. The push plate moves back, so that the clamping robot drives the empty barrel to translate and put it on the take-up shaft. After the empty barrel is put on, the supporting slot block rises and falls and supports the bearing of the take-up shaft, thus completing the automatic unloading of the material roll and the automatic loading of the empty barrel.

[0036] To sum up, the utility model has a simple and novel structure and a reasonable design, and can realize the stretching and cooling operations of the PE film. It is provided with an unloading and loading mechanism. After the material roll is wound up, the pushing plate translation drive device can drive the pushing plate to translate, so that the pushing plate pushes the material roll out from the winding shaft. During this process, the supporting slot block can be lowered to avoid the position. After the material roll is pushed out, the two clamping manipulators can move to the top of the unloading position and clamp the empty material barrel, and then the pushing plate retreats and resets, and the manipulator follows and puts the empty material barrel on the winding shaft to realize the automatic unloading of the PE film material roll and the automatic loading of the material barrel, without manual operation, which greatly reduces the labor intensity of workers and saves time and effort.

[0037] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A PE film stretching device, characterized in that: The invention comprises a heating and heat preservation box (1) and a discharging and loading mechanism (2), wherein the inlet end of the heating and heat preservation box (1) is provided with an inlet port (11), and the outlet end of the heating and heat preservation box (1) is provided with an outlet port (12), and a plurality of upper rotating shafts (13) and lower rotating shafts (14) are rotatably connected between two inner side walls of the heating and heat preservation box (1), and the upper rotating shafts (13) and the lower rotating shafts (14) are arranged staggered up and down along the feeding direction of the heating and heat preservation box (1), and the discharging and loading mechanism (2) is located at the outlet end of the heating and heat preservation box (1), and the discharging and loading mechanism (2) comprises a bracket (21), a winding shaft (22), and a winding shaft rotation driving device ( 23), a push plate (24), a push plate translation drive device (25), a supporting groove block (26), a supporting groove block lifting drive device (27), a clamping manipulator (28) and a manipulator lifting drive device (29), the reel (22) is located at the discharge port of the heating and heat preservation box (1), one end of the reel (22) is rotatably connected to the bracket (21), the reel rotation drive device (23) is installed on the bracket (21) and is transmission-connected to one end of the reel (22), the other end of the reel (22) is installed with a bearing (221), the supporting groove block (26) is U-shaped and is located at the bearing (22 1), the supporting groove block lifting drive device (27) is installed on the bracket (21) and is connected to the supporting groove block (26) to drive it to move up and down, the push plate (24) is arranged longitudinally and is located at one end of the winding shaft (22), the lower end of the push plate (24) is provided with a through hole (241) for the winding shaft (22) to pass through, and the end of the through hole (241) of the push plate (24) away from the bearing (221) is provided with a plurality of rollers (242) distributed in an annular shape with the central axis of the through hole (241) as the center, the push plate translation drive device (25) is installed on the bracket (21) and is connected to the push plate (24) to drive it to move up and down, the push plate (24) is arranged longitudinally and is located at one end of the winding shaft (22), the lower end of the push plate (24) is provided with a through hole (241) for the winding shaft (22) to pass through, and the end of the through hole (241) of the push plate (24) away from the bearing (221) is provided with a plurality of rollers (242) distributed in an annular shape with the central axis of the through hole (241) as the center, and the push plate translation drive device (25) is installed on the bracket (21) and is connected to the push plate (24) to drive it to move up and down. The push plate (24) is dynamically connected, the upper end of the push plate (24) is connected to a translation plate (30) located above the winding shaft (22) and parallel to the winding shaft (22), the manipulator lifting drive device (29) is provided with two and is installed at the two ends of the lower surface of the translation plate (30), the clamping manipulator (28) is provided with two and is installed at the lower ends of the corresponding manipulator lifting drive devices (29), when the push plate translation drive device (25) drives the push plate (24) to translate, the push plate (24) translates along the winding shaft (22), and the roller (242) on the push plate (24) can roll and contact with the surface of the winding shaft (22).

2. A PE film stretching device according to claim 1, characterized in that: The winding shaft rotation driving device (23) is configured as a rotary motor, which is mounted on the bracket (21) and is drivingly connected to one end of the winding shaft (22).

3. A PE film stretching device according to claim 1, characterized in that: The push plate translation drive device (25) comprises a screw (251), a nut (252) and a screw motor (253); the screw (251) is rotatably mounted on the bracket (21); the screw motor (253) is mounted on the bracket (21) and is transmission-connected to the screw (251); the nut (252) is threadedly connected to the screw (251) and is connected to the push plate (24).

4. A PE film stretching device according to claim 1, characterized in that: The supporting slot block lifting drive device (27) is configured as a supporting slot block lifting cylinder.

5. A PE film stretching device according to claim 1, characterized in that: The material clamping manipulator (28) comprises a clamping finger cylinder (281) and two clamping blocks (282), wherein the clamping blocks (282) are respectively mounted on two translation positions of the clamping finger cylinder (281).

6. A PE film stretching device according to claim 1, characterized in that: The manipulator lifting drive device (29) is configured as a manipulator lifting cylinder.

7. A PE film stretching device according to claim 1, characterized in that: A first slider (301) is provided at one end of the upper surface of the translation plate (30) away from the push plate (24), and a second slider (243) is provided at the upper end of the push plate (24). Both the first slider (301) and the second slider (243) are slidably connected to a slide rail (219) provided on the lower surface of the top plate of the bracket (21).

8. A PE film stretching device according to claim 1, characterized in that: It also includes two cooling fans (3), which are installed on the heating and insulation box (1) and located at the upper and lower ends of the discharge port of the heating and insulation box (1), and the cooling fans (3) are located between the heating and insulation box (1) and the unloading and loading mechanism (2).

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