Film blowing and edge breaking device with width measuring function

Abstract

The utility model relates to plastic processing equipment, in particular to a film blowing and edge breaking device with a width measuring function, which comprises a film blowing mechanism and a traction mechanism, the film blowing mechanism and the traction mechanism are matched to form a traction path, edge breaking knives are arranged on two sides of the traction path, and cutting edges of the edge breaking knives are obliquely arranged. The edge breaking cutter is arranged on a cutter holder, the cutter holder is arranged on a moving seat in a left-right moving mode, the moving seat is arranged in a left-right moving mode, the cutter holder is provided with an elastic piece and a displacement sensor, the displacement sensor and the elastic piece are arranged on the moving seat, and the displacement sensor is in signal connection with a controller. The displacement sensor monitors left-right movement of the tool apron and sends a displacement signal to the controller, the controller increases or decreases the preset film width according to the displacement signal to obtain the real film width, width measurement is achieved, and the movable base is moved left and right to correspond to the set film width.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plastic processing equipment especially a film blowing edge breaking device with width measuring function. BACKGROUND

[0002] The existing film blowing machine monitors the film width through multiple photoelectric eyes at the film blowing mechanism, which is high in cost, and the edge breaking knife is balanced through the gravity of the weight during the edge breaking process, so that there is a risk of knife falling when the film width exceeds the adjustment range of the weight, and the edge breaking device is designed to integrate the width measuring function, the amount of left and right movement of the edge breaking knife is increased or decreased on the preset film width to obtain the real film width, the width measuring photoelectric eye is saved, and the film width is adjusted in time to avoid knife falling. SUMMARY

[0003] In view of the technical problems in the background art, the utility model aims to provide a film blowing edge breaking device with width measuring function, a displacement sensor is arranged to monitor the left and right movement of the knife seat, the amount of left and right movement of the edge breaking knife is increased or decreased on the preset film width to obtain the real film width, and the width measuring function is realized.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the film blowing edge breaking device with width measuring function comprises a film blowing mechanism and a traction mechanism, the film blowing mechanism and the traction mechanism cooperate to form a traction path, the traction path is provided with edge breaking knives on both sides, and the edge breaking knives are arranged on knife seats and move left and right on a moving seat.

[0005] In this scheme, the displacement sensor monitors the left and right movement of the knife seat and sends a displacement signal to the controller, the controller increases or decreases the real film width on the basis of the displacement signal, realizes width measurement, and the moving seat moves left and right to correspond to the set film width.

[0006] Preferably, the inside of the knife seat is defined between the left and right, the edge breaking knife blade is inclined outward, and the elastic member is used to apply an outward moving force to the knife seat.

[0007] In this scheme, the edge breaking knife blade is inclined outward, the cylindrical film generates an inward moving force on the edge breaking knife, and the force generated by the elastic member on the knife seat is balanced to stabilize the edge breaking.

[0008] Preferably, the film blowing mechanism comprises a pipeline in communication with an air source, the pipeline is provided with an electromagnetic valve, and the electromagnetic valve is in signal connection with the controller.

[0009] In the scheme, the electromagnetic valve controls the pipeline to be opened or closed, air is supplied to the membrane bubble and air is discharged, and the floating of the membrane width is avoided from exceeding the adjustment range of the elastic member.

[0010] Preferably, the inside is defined between the left and right knife holders, the moving seat is provided with a guide column, the knife holder and the elastic member are sleeved on the guide column, and the elastic member and the displacement sensor are located outside the knife holder.

[0011] In the scheme, the elastic member and the displacement sensor are located outside the knife holder, and interference with the double-layer film after edge breaking is avoided.

[0012] Preferably, the moving seat is connected with a synchronous belt, the synchronous belt is arranged on a synchronous wheel, the synchronous wheel is in driving connection with an adjusting motor, and the adjusting motor is in control connection with the controller.

[0013] In the scheme, the controller controls the adjusting motor to drive the synchronous wheel to rotate, the moving seat is driven to move leftward and rightward by the synchronous belt, and the set membrane width is corresponded.

[0014] Preferably, the moving seat is connected with a sliding block, and the sliding block is slidingly matched with left and right slide rails.

[0015] In the scheme, the sliding block and the left and right slide rails are matched to guide the leftward and rightward movement of the moving seat.

[0016] Preferably, the edge breaking knife is detachably connected with the knife holder.

[0017] In the scheme, the edge breaking knife can be replaced after being worn.

[0018] Preferably, the knife holder is provided with a guide plate, the guide plate is provided with a guide head, and the guide head has a taper.

[0019] In the scheme, the guide head with the taper supports the double-layer film, surface tension is increased, and edge breaking is facilitated.

[0020] Preferably, the traction mechanism comprises a traction motor, and the traction motor is in control connection with the controller.

[0021] In the scheme, the controller controls the rotating speed of the traction motor, and the membrane width is finely adjusted.

[0022] The displacement sensor monitors the leftward and rightward movement of the knife holder and sends a displacement signal to the controller, the controller increases or decreases the preset membrane width according to the displacement signal to obtain a real membrane width, width measurement is realized, and the moving seat is moved leftward and rightward to correspond to the set membrane width. BRIEF DESCRIPTION OF DRAWINGS

[0023] The implementation manners and examples of the utility model will be described below in combination with the drawings.

[0024] Fig. 1 It is a three-dimensional structure schematic view of the utility model.

[0025] Fig. 2 It is a three-dimensional structure schematic view of the utility model.

[0026] Fig. 3 It is a three-dimensional structure schematic view of the utility model.

[0027] In the figure: 1, broken edge knife; 2, knife holder; 3, elastic member; 4, displacement sensor; 5, moving seat; 6, guide column; 7, synchronous belt; 8, synchronous wheel; 9, adjusting motor; 10, guide head; 11, left and right slide rail; 12, guide plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments in the utility model without creative labor belong to the protection scope of the utility model.

[0029] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0030] In the description of the present application, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0031] Referring to the drawings Figs. 1-3 , the embodiment of the present embodiment is a film blowing broken edge device with width measuring function, which comprises a film blowing mechanism and a traction mechanism, the film blowing mechanism and the traction mechanism cooperate to form a traction path, the film blowing mechanism comprises a pipeline communicated with the air source, the pipeline is provided with a solenoid valve, the solenoid valve is connected with the controller, the traction mechanism comprises a traction motor, the traction motor is connected with the controller, and the traction path is provided with a broken edge knife 1 on both sides.

[0032] The broken edge cutter 1 is detachably connected with the cutter seat 2, the cutter seat 2 is movably arranged on the moving seat 5, the moving seat 5 is movably arranged, the cutter seat 2 is provided with the elastic element 3 and the displacement sensor 4, the displacement sensor 4 and the elastic element 3 are arranged on the moving seat 5, and the displacement sensor 4 is signal-connected with the controller.

[0033] The inside is defined between the left and right cutter seats 2, the broken edge cutter 1 is inclined outward, and the elastic element 3 is used for applying an outward moving force to the cutter seat 2.

[0034] The cutter seat 2 is provided with a guide plate 12, the guide plate 12 is provided with a guide head 10, and the guide head 10 has a taper.

[0035] The moving seat 5 is provided with a guide column 6, the cutter seat 2 and the elastic element are sleeved on the guide column 6, and the elastic element and the displacement sensor 4 are located outside the cutter seat 2.

[0036] The moving seat 5 is connected with a synchronous belt 7, the synchronous belt 7 is arranged on a synchronous wheel 8, the synchronous wheel 8 is drivingly connected with an adjusting motor 9, the adjusting motor 9 is control-connected with the controller, the moving seat 5 is connected with a sliding block, and the sliding block is slidingly matched with left and right sliding rails 11.

[0037] In the embodiment, the traction mechanism pulls the cylindrical film (not shown in the figure) blown by the film blowing mechanism, the cylindrical film is flattened to form a double-layer sheet film, the broken edge cutter 1 divides the double-layer sheet film into two single-layer sheet films for subsequent winding by the winding mechanism, which is a mature technology. When the film width is floating, the thrust applied by the double-layer sheet film to the broken edge cutter 1 changes, and the stretching degree of the elastic element changes accordingly, so that the blade of the broken edge cutter 1 keeps pressing the surface of the double-layer sheet film. When the relative displacement signal sent by the displacement sensor 4 exceeds or is lower than a certain value, the electromagnetic valve controls the pipeline to be opened or closed to supply air or exhaust air to the film bubble, or the controller adjusts the rotating speed of the traction motor to timely fine-tune the film width. When the film width is adjusted, the controller controls the motor to rotate according to the input film width value, and drives the moving seat 5 to move left and right to the position through the synchronous wheel 8 and the synchronous belt 7.

[0038] The displacement sensor 4 is contact type, the cutter seat 2 is provided with a connecting block, the connecting block abuts against the sensing head of the displacement sensor 4, the displacement sensor 4 has various forms, and is not limited thereto; and the guide column 6 guides the left and right of the cutter seat 2.

[0039] In other alternative embodiments, the moving seat 5 can also be driven by a screw rod, and the transmission form is various, and is not limited thereto.

[0040] The above description represents the preferred embodiment of this utility model. It should be noted that the protection scope of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these modifications and substitutions are also considered to be within the protection scope of this utility model.

Claims

1. A blown film edge-breaking device with width measurement function, comprising a blown film mechanism and a traction mechanism, wherein the blown film mechanism and the traction mechanism cooperate to form a traction path, and edge-breaking knives (1) are provided on both sides of the traction path, wherein the edge-breaking knives (1) are inclined, characterized in that: The edge-breaking knife (1) is mounted on the knife holder (2), the knife holder (2) is mounted on the moving seat (5) and the moving seat (5) is mounted on the moving seat (5) and the knife holder (2) is equipped with an elastic element (3) and a displacement sensor (4), the displacement sensor (4) and the elastic element (3) are mounted on the moving seat (5), and the displacement sensor (4) is connected to the controller signal.

2. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The inner side is defined between the left and right upper blade holders (2), the edge-breaking blade (1) is inclined outward, and the elastic element (3) is used to apply an outward moving force to the blade holder (2).

3. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The blown film mechanism includes a pipe connected to an air source, the pipe being equipped with a solenoid valve, and the solenoid valve being controlled by the controller.

4. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The inner side is defined between the left and right upper tool holders (2). The movable seat (5) is provided with a guide post (6). The tool holder (2) and the elastic element (3) are sleeved on the guide post (6). The elastic element (3) and the displacement sensor (4) are located on the outer side of the tool holder (2).

5. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The movable seat (5) is connected to the synchronous belt (7), the synchronous belt (7) is wound around the synchronous pulley (8), the synchronous pulley (8) is connected to the regulating motor (9) for transmission, and the regulating motor (9) is connected to the controller for control.

6. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The movable seat (5) is connected to a slider, and the slider is slidably fitted with left and right slide rails (11).

7. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The edge-breaking knife (1) is detachably connected to the knife holder (2).

8. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The tool holder (2) is provided with a guide plate (12), the guide plate (12) is provided with a guide head (10), and the guide head (10) has a taper.

9. The blown film edge-breaking device with width measurement function as described in claim 1, characterized in that: The traction mechanism includes a traction motor, which is connected to the controller.

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