Reel material thickness detection device of composite material plastic packaging bag cutting machine

Abstract

The utility model discloses a reel material thickness detection device of a composite material plastic packaging bag cutting machine, which belongs to the technical field of plastic packaging bag processing equipment and comprises a cutting machine, a control panel is arranged in front of a case on one side of the cutting machine, an upper driving motor and a lower driving motor are arranged in the case, and output shafts of the driving motors are outwards connected with reels. A plurality of spaced film rolls are wound on the reel, a knife rest is arranged between the cutting machine cases, a plurality of cutting blades are installed below the knife rest at intervals through a rotating knife holder, and the cutting blades cut an integrated composite material plastic film into a plurality of film belts with different widths. The reel material thickness detection device can be used for detecting the thickness of materials on a plurality of reels, the number of detection subareas is large, a specific area with uneven material thickness can be found, the reel speed, the position of a material pressing roller and the installation angle of a cutting blade are adjusted in a targeted mode, and the composite film machining quality of a composite material plastic packaging bag is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging bag processing equipment, and more specifically, to a thickness detection device for the scroll material of a cutting machine for composite material plastic packaging bags. Background Technique

[0002] In order to package different types of products, it is necessary to design special composite material plastic packaging bags for different products. For example, PET / AL / CPP, PA / AL / CPP, etc. have the advantages of high temperature resistance, good rigidity, good printability, and high strength. Among them, PET material has high temperature resistance, high strength, flexibility, good barrier property, and puncture resistance; PA material has the best barrier property and high temperature resistance; AL material is a high temperature cooking grade, has good heat sealability, and is non-toxic and odorless; CPP material is a high temperature barrier material. By using processing equipment to make composite material plastic packaging bags to form a multi-layer structure, better performance and reliability can be obtained.

[0003] The existing composite material plastic packaging bags generally obtain a relatively wide composite material plastic film after extruding and blowing film around multiple blown film machines and forming with a reel. Subsequently, the relatively wide composite material plastic film needs to be cut by a cutting machine to obtain a composite material plastic film that meets the customer's required size. Since this plastic film is a multi-layer composite structure, the thickness of the scroll material in each area after cutting is an important processing index. When the thickness does not meet the standard, it is necessary to adjust the scroll speed, the position of the pressure roller, and the installation angle of the cutting blade to ensure the cutting consistency of the thickness. In the actual production process, there is no special thickness detection device for the scroll material, and it often depends on the naked eye observation of the staff. Therefore, the detection accuracy is not high, and it is impossible to timely detect the plastic film area with uneven thickness and adjust the equipment, resulting in poor processing quality of the composite film. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a thickness detection device for the scroll material of a cutting machine for composite material plastic packaging bags. This thickness detection device for the scroll material can detect the thickness of the materials on multiple scrolls, has more detection partitions, can find the specific areas with uneven material thickness, and perform targeted adjustments on the scroll speed, the position of the pressure roller, and the installation angle of the cutting blade to improve the processing quality of the composite film of the composite material plastic packaging bag.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A thickness detection device for the roll material of a composite material plastic packaging bag cutting machine, including a cutting machine. In front of the chassis on one side of the cutting machine, there is a control panel, and inside the chassis, there are two driving motors, one above the other. The output shaft of the driving motor is externally connected to a roll. A number of spaced film rolls are wound around the roll. Between the chassis of the cutting machine, there is a tool rest, and below the tool rest, a number of cutting blades are installed at intervals through a rotating tool holder. Among them, the number of cutting blades divides the integrated composite material plastic film into several film strips with different widths. The film strips are tensioned and guided by a pressure roller and wound around the roll to form a film roll. A detection device is installed on the film strip between the pressure roller and the roll. The detection device includes a mounting seat, which is fixed to the inner side surface of the chassis of the cutting machine by bolts. An expansion bracket is fixed to the outside of the mounting seat. A rotating sleeve is sleeved on the outer end of the telescopic section of the expansion bracket. A turntable is fixed to the outer side surface of the rotating sleeve. Two signal detection boxes that are symmetrically arranged up and down are connected inward through several support rods up and down on the inner side surface of the turntable.

[0007] As a further optimization of this solution, limit nuts are provided on the outer side surface of the non-telescopic section of the expansion bracket and the outer side surface of the rotating sleeve.

[0008] As a further optimization of this solution, several top plates arranged horizontally are fixed to the inner side surfaces of the two signal detection boxes. Among them, at the center position of each top plate, a connecting column is connected downward to a bottom plate. Through holes are provided at the front and rear ends of the surface of the bottom plate, and telescopic connecting rods pass through the through holes. The telescopic connecting rods are connected downward to a detection block. A pressure sensor is installed at the center position of the outer side surface of the bottom plate. The power supply signal wire of the pressure sensor passes through the bottom plate and is connected to the corresponding interface of the signal detection box on the outside. An annular baffle is provided on the non-telescopic section of the telescopic connecting rod, and a pre-tightening spring is sleeved around the telescopic connecting rod between the annular baffle and the detection block.

[0009] As a further optimization of this solution, the outer side surface of the detection block is an arc surface and contacts the upper and lower sides of the film strip, and the inner side surface of the detection block is a flat surface and contacts the pressure head of the pressure sensor.

[0010] As a further optimization of this solution, the two signal detection boxes are both connected to the control panel through wires, and the two side surfaces of the two signal detection boxes are externally connected to the turntable through several support rods up and down.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, a detection device is installed on the film belt between each reel and the pressure roller, which can detect the thickness of each position of the film belt in real time. When the thickness of a certain position on the upper and lower surfaces of the film belt is relatively thick, the film belt at this position will extrude the detection block outwards. The detection block moves outwards and presses down the pressing head of the pressure sensor. The pressure sensor detects the pressure change value at this position of the film belt, and transmits the change value to the signal detection box on the corresponding side through the power supply signal line, and then transmits the signal of the signal detection box to the control panel through the line. When the value exceeds the qualified threshold set by the control panel, it is determined that the thickness of the film belt at this position is relatively large, and the staff is reminded to adjust the reel speed, the position of the pressure roller, and the installation angle of the cutting blade of the film roll accordingly until the pressure change value displayed on the control panel is within the reasonable threshold, improving the processing quality of the composite film of the composite material plastic packaging bag. Description of the Drawings

[0013] Figure 1 Schematic diagram of the installation structure of a thickness detection device of the present utility model;

[0014] Figure 2 Schematic diagram of the connection structure of the mounting seat of the present utility model;

[0015] Figure 3 Schematic diagram of the relative position between the detection block and the film belt of the present utility model;

[0016] Figure 4 Schematic diagram of the connection structure above the detection block of the present utility model;

[0017] In the figure: 1, cutting machine; 2, control panel; 3, cutting blade; 4, pressure roller; 5, reel; 6, ; 7, film roll; 8, line; 9, mounting seat; 10, telescopic bracket; 11, rotating sleeve; 12, turntable; 13, bracket; 14, signal detection box; 15, detection block; 16, bottom plate; 17, connecting column; 18, pre-tightening spring; 19, top plate; 20, pressure sensor; 21, telescopic connecting rod; 22, annular baffle; 23, power supply signal line. Detailed Embodiment

[0018] In order to make the technical means, creative features, achieved purposes and effects realized by the utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0019] In order to solve the problem that there is no special detection device for the thickness of the reel material in the existing production process, and it often depends on the naked eye observation of the staff. Therefore, the detection accuracy is not high, and it is impossible to timely detect the area of the plastic film with uneven thickness and adjust the equipment, resulting in poor processing quality of the composite film. For example Figure 1As shown in the figure, the present application includes a cutting machine 1. In front of the chassis on one side of the cutting machine 1, there is a control panel 2, and there are two driving motors, upper and lower, inside the chassis. The output shafts of the driving motors are connected outwardly to a reel 5, and a number of spaced film rolls 6 are wound around the reel 5. Between the chassis of the cutting machine 1, there is a tool rest, and a number of cutting blades 3 are installed at intervals below the tool rest through a rotating tool holder. Among them, the number of cutting blades 3 divide the integral composite plastic film into a number of film strips 7 with different widths. The film strips 7 are tensioned and guided by a pressure roller 4 and wound around the reel 5 to form film rolls 6. A detection device is installed on the film strip 7 between the pressure roller 4 and the reel 5;

[0020] As Figure 2 shown, the detection device includes a mounting base 9. The mounting base 9 is fixed to the inner side surface of the chassis of the cutting machine 1 by bolts. An expansion bracket 10 is fixed to the outside of the mounting base 9. A rotating sleeve 11 is sleeved on the outer end of the telescopic section of the expansion bracket 10. A turntable 12 is fixed to the outer side surface of the rotating sleeve 11. Two signal detection boxes 14, which are symmetrically arranged up and down, are connected inwardly to the inner side surface of the turntable 12 through a number of upper and lower brackets 13.

[0021] As Figure 3 and Figure 4 shown, a number of top plates 19 arranged horizontally are fixed to the inner side surfaces of the two signal detection boxes 14. Among them, at the center position of each top plate 19, a connecting column 17 is connected downward to a bottom plate 16. Through holes are provided at the front and rear ends of the surface of the bottom plate 16, and a telescopic connecting rod 21 passes through the through holes. The telescopic connecting rod 21 is connected downward to a detection block 15. A pressure sensor 20 is installed at the center position of the outer side surface of the bottom plate 16. The power supply signal line 23 of the pressure sensor 20 passes through the bottom plate 16 and is connected to the corresponding interface of the signal detection box 14 on the outside. An annular baffle 22 is provided on the non-telescopic section of the telescopic connecting rod 21, and a pre-tightening spring 21 is sleeved around the telescopic connecting rod 21 between the annular baffle 22 and the detection block 15. The outer side surface of the detection block 15 is an arc surface and contacts the upper and lower sides of the film strip 7, and the inner side surface of the detection block 15 is a plane and contacts the pressure head of the pressure sensor 20. The two signal detection boxes 14 are both connected to the control panel 2 through a line 8. The two side surfaces of the two signal detection boxes 14 are externally connected to the turntable 12 through a number of upper and lower brackets 13;

[0022] Specifically, when in use, all the detection components are installed on all the slit film tapes 7 through the mounting base 9. Among them, the lateral positions of all the detection blocks 15 are adjusted through the telescopic bracket 10 so that the detection blocks 15 cover all areas on the upper and lower sides of the film tape 7. At the same time, the rotation angles of all the detection blocks 15 are adjusted by rotating the sleeve 11 to adapt to the running direction of the film tape 7. Connect all the power supply signal lines 23 and the circuit 8, and start the detection work. In the initial state, the pre-tightening spring 21 pre-tightens the telescopic connecting rod 21 so that each detection block 15 gives an initial pressure to the corresponding pressure sensor 20. At the same time, the pressure sensors 20 at each position are sequentially numbered through the control panel to facilitate quickly finding abnormal positions. When the thickness of the film tape 7 is thicker at a certain position on the upper and lower sides, the film tape 7 at this position will extrude the arc surface of the detection block 15 outwards. The detection block 15 moves outwards and presses down the indenter of the pressure sensor 20. The pressure sensor 20 detects the pressure change value at this position of the film tape 7 and transmits the change value to the signal detection box 14 on the corresponding side through the power supply signal line 23, and then transmits the signal of the signal detection box 14 to the control panel 2 through the circuit 8. When the value exceeds the qualified threshold set by the control panel 2, it is determined that the thickness of the film tape 7 at this position is larger, and the staff is reminded to make targeted adjustments to the speed of the reel 5 of the film roll 6, the position of the pressure roller 4, and the installation angle of the cutting blade 3 until the pressure change value displayed on the control panel 2 is within the reasonable threshold, achieving the purpose of detection and improving the processing quality of the composite film of the composite material plastic packaging bag.

[0023] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0024] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A composite material plastic packaging bag cutting machine reel material thickness detection device, comprising a cutting machine, a control panel is provided in front of a chassis on one side of the cutting machine, and two upper and lower driving motors are provided inside the chassis, the output shaft of the driving motor is externally connected to a reel, and a plurality of spaced film rolls are wound on the reel, a knife holder is provided between the cutting machine chassis, and a plurality of cutting blades are installed at intervals under the knife holder through a rotating knife seat, wherein the plurality of cutting blades cut a composite material plastic film into a plurality of film strips with different widths, and the film strips are guided to be wound on the reel by a pressing roller to form a film roll, characterized in that: A detection device is installed on the film tape between the pressing roller and the reel, and the detection device includes a mounting seat, which is fixed to the inner side of the chassis of the cutting machine by bolts, a telescopic bracket is fixed to the outer side of the mounting seat, a rotating sleeve is sleeved on the outer end of the telescopic section of the telescopic bracket, a turntable is fixed to the outer side of the rotating sleeve, and two signal detection boxes that are symmetrical in upper and lower directions are connected inwardly to the inner side of the turntable through a plurality of upper and lower brackets.

2. The composite material plastic packaging bag cutting machine reel material thickness detection device according to claim 1, characterized in that: The outer side surface of the non-telescopic section of the telescopic bracket and the outer side surface of the rotating sleeve are both provided with limiting nuts.

3. The composite material plastic packaging bag cutting machine reel material thickness detection device according to claim 1, characterized in that: Several top plates arranged laterally are fixed on the inner sides of the two signal detection boxes, wherein the center of each top plate is connected downward to the bottom plate through a connecting column, through holes are opened at the front and rear ends of the bottom plate surface and a telescopic connecting rod passes through the through hole, and the telescopic connecting rod is downwardly connected to the detection block, a pressure sensor is installed at the center of the outer side of the bottom plate, and the power supply signal line of the pressure sensor passes through the bottom plate and is connected to the corresponding interface of the signal detection box on the outside, an annular baffle is provided on the non-telescopic section of the telescopic connecting rod, and a pre-tightening spring is sleeved on the outer periphery of the telescopic connecting rod between the annular baffle and the detection block.

4. The composite material plastic packaging bag cutting machine reel material thickness detection device according to claim 3 is characterized by: The outer side surface of the detection block is a curved surface and contacts the upper and lower sides of the membrane strip, and the inner side surface of the detection block is a flat surface and contacts the pressure sensor pressure head.

5. The composite material plastic packaging bag cutting machine reel material thickness detection device according to claim 4, characterized in that: The two signal detection boxes are both connected to the control panel through lines, and both sides of the two signal detection boxes are externally connected to rotating disks through a plurality of upper and lower brackets.

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