Automatic width gauge for thin film

Abstract

The utility model relates to the technical field of film blowing machines, and discloses an automatic film width gauge. Two groups of guide hook grooves are symmetrically formed in the plate surface of a shell of a transmission shell in a staggered manner, and two groups of transmission mechanisms opposite to the guide hook grooves are symmetrically arranged at the bottom of the shell of the transmission shell in a staggered manner; a support of the transmission mechanism penetrates through the guiding hook groove and is fixedly connected with the distance measuring sensor. According to the film width measuring device, the distance measuring sensors are driven to slide in a butt-clamping mode and clamped on the two sides of a film through symmetrical track displacement of the two sets of transmission mechanisms, mechanical and real-time width measuring work is carried out on the width of the film, manual width measuring is not needed, the width of the film can be automatically measured, and when the film is larger than or smaller than a set value, the film width can be automatically measured. And the film blowing machine can be controlled to synchronously inflate and exhaust in real time and automatically adjust the width of the film until a set value is reached, so that the production precision of the width of the film is improved, and labor, time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to an automatic film width measuring instrument. Background Art

[0002] The film blowing machine heats and melts plastic particles and then blows them into film. The process flow is to add dry polyethylene particles into the lower hopper, and the particles enter the screw from the hopper by their own weight. When the particles come into contact with the bevel of the thread, the rotating bevel surface generates a thrust perpendicular to the bevel surface on the plastic, pushing the plastic particles forward. During the pushing process, the plastic gradually melts due to the friction between the plastic and the screw, the plastic and the barrel, the collision and friction between the particles, and the external heating of the barrel; the molten plastic is filtered through the machine head to remove impurities and comes out from the die head, cooled by the air ring, blown, and rolled into a tube through the herringbone plate, traction roller, and winding.

[0003] During the film blowing production process, the film width needs to be detected to ensure that it is maintained within a reasonable width range. However, the existing film width detection is mostly manual detection, which is cumbersome and time-consuming. After the detection is completed, the inflation and exhaust equipment can be controlled to adjust the film width. To this end, those skilled in the art provide an automatic film width measuring instrument to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic film width measuring instrument, which can effectively solve the problem of complicated width detection operation in the existing film production process in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an automatic film width measuring instrument, comprising a transmission housing;

[0006] The housing plate surface of the transmission housing is symmetrically staggered with two sets of guide hook grooves, and the housing bottom of the transmission housing is symmetrically staggered with two sets of transmission mechanisms opposite to the guide hook grooves, and the bracket of the transmission mechanism passes through the guide hook grooves and is fixedly connected to the distance measuring sensor;

[0007] The transmission mechanism includes support seats which are symmetrically arranged in pairs at the bottom of the transmission housing bracket and close to the guide hook groove, a transmission screw is rotatably connected between the two groups of support seats, and guide optical axes are symmetrically arranged on both sides of the shaft of the transmission screw between the two groups of support seats, a guide slide guided by the guide optical axis is sleeved on the outer side of the shaft of the transmission screw, and a connecting bracket that penetrates the guide hook groove and is connected to the ranging sensor is arranged on one side of the guide slide frame.

[0008] As a further solution of the utility model: a transmission motor fixed on a support seat is installed at one end of the shaft of the transmission screw.

[0009] As a further solution of the utility model: the shaft length of the transmission screw is the same as the sliding groove length of the guide hook groove.

[0010] As a further solution of the utility model: the distance measuring sensor is a U-shaped structure, and the distance measuring sensor is an ultrasonic sensor or a photoelectric sensor.

[0011] As a further solution of the utility model: the sliding grooves of the two groups of guide hook grooves are staggered and overlapped with each other in the horizontal direction.

[0012] As a further solution of the present invention: a control box is installed in the middle of the chassis of the transmission housing.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model utilizes the symmetrical track displacement of two sets of transmission mechanisms to drive the distance measuring sensors to slide and clamp on both sides of the film to perform mechanical and real-time width measurement of the film. It does not need manual width measurement and can automatically measure the width of the film. When the film is larger or smaller than the set value, the film blowing machine can be controlled to synchronously inflate and exhaust in real time to automatically adjust the film width until the set value is reached, thereby improving the production accuracy of the film width, saving labor, time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an automatic film width measuring instrument of the utility model;

[0016] Figure 2 This is a bottom view of an automatic film width measuring instrument of the utility model;

[0017] Figure 3 This utility model is a film automatic width measuring instrument Figure 2 A magnified schematic diagram of center A.

[0018] In the figure: 1. Transmission housing; 2. Guide hook groove; 3. Distance measuring sensor; 4. Control box; 5. Transmission motor; 6. Transmission screw; 7. Guide optical axis; 8. Support seat; 9. Guide slide; 10. Connecting bracket. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Please refer to Figure 1-3 As shown, a film automatic width measuring instrument comprises a transmission shell 1, a shell plate surface of the transmission shell 1 is symmetrically staggered with two groups of guide hook grooves 2, and the shell bottom of the transmission shell 1 is symmetrically staggered with two groups of transmission mechanisms opposite to the guide hook grooves 2, the transmission mechanism comprises support seats 8 symmetrically arranged at the bottom of the support of the transmission shell 1 and close to the guide hook grooves 2, a transmission screw 6 is rotatably connected between the two groups of support seats 8, and guide optical axes 7 are symmetrically arranged on both sides of the shaft of the transmission screw 6 between the two groups of support seats 8, and a guide slideway guided by the guide optical axis 7 is sleeved on the outer side of the shaft of the transmission screw 6 9, and a connecting bracket 10 that passes through the guide hook groove 2 and is connected to the distance measuring sensor 3 is arranged on one side of the frame of the guide slide 9, and a transmission motor 5 fixed on the support seat 8 is installed at one end of the shaft of the transmission screw 6, and the shaft length of the transmission screw 6 is the same as the length of the slide groove of the guide hook groove 2. By controlling the operation of the transmission motor 5, the transmission screw 6 is driven to rotate, and the guide slide 9 is pushed to slide along the shaft direction of the guide optical axis 7, and then the connecting bracket 10 is pushed to slide along the slide groove direction of the guide hook groove 2, so that the two groups of distance measuring sensors 3 maintain the clamping displacement and fit on both sides of the film, and the film width is mechanically measured.

[0023] The bracket of the transmission mechanism passes through the guide hook groove 2 and is fixedly connected to the distance sensor 3. The distance sensor 3 is a U-shaped structure, and the distance sensor 3 is a kind of ultrasonic sensor or photoelectric sensor. Two groups of distance sensors 3 with U-shaped structures arranged in a symmetrical form can be displaced to both sides of the film in a carding manner. On the one hand, the distance sensors 3 in the form of ultrasonic or photoelectric sensors are used to perform real-time dynamic detection of the film width, and on the other hand, they play a traction and guiding role on the film.

[0024] The slide grooves of the two sets of guide hook grooves 2 are staggered and overlapped with each other in the horizontal direction. By arranging the two sets of guide hook grooves 2 to be staggered and overlapped with each other, the purpose is to make the sensing points of the two distance measuring sensors 3 be in a straight line, so that the film with the extreme width can be measured, and the width is infinitely close to 0.

[0025] A control box 4 is installed in the middle of the chassis of the transmission housing 1. By setting up the control box 4, it can be used as a control sensing system to control the braking operation of the automatic width gauge and measure the width of the sensing film, so as to transmit real-time signals to the human-machine interface, control the operation of the inflation and exhaust equipment, and adjust the film width in real time.

[0026] The working principle of the utility model is as follows: when the automatic width meter is used to automatically measure the width of the film, the automatic width meter is installed in advance on the path of the film blowing molding, and then when the film is blown, the machine is turned on and reset, and the transmission motor 5 is controlled to work, driving the transmission screw 6 to rotate, pushing the guide slide 9 to slide along the shaft direction of the guide optical axis 7, and then pushing the connecting bracket 10 to slide along the slide direction of the guide hook groove 2, so that the two sets of distance measuring sensors 3 maintain the clamping displacement, fit on both sides of the film, and move to both sides of the film in a clamping manner. On the one hand, the distance measuring sensor 3 in the form of ultrasonic or photoelectric sensing is used to perform real-time dynamic detection of the film width, and on the other hand, It plays an auxiliary traction and guiding role facing the film, and then the control box 4 monitors the sensing of the distance sensor 3 and transmits the distance signal to the control terminal. If the measured width is less than the set value, the inflation solenoid valve of the film blowing machine is opened to inflate the film bubble of the film blowing machine to increase the diameter of the film bubble, thereby increasing the film width; conversely, if the measured width is greater than the set value, the exhaust solenoid valve is opened to discharge part of the gas in the film bubble to reduce the diameter of the film bubble and thereby reduce the film width; this is repeated so that the width of the produced film is guaranteed to be within the set width range, and the film width is measured automatically in real time, thereby improving the production accuracy of the film width, saving labor, time and effort.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A film automatic width measuring instrument, characterized in that: comprising a transmission housing (1); The housing plate surface of the transmission housing (1) is provided with two sets of guide hook grooves (2) in a symmetrically staggered manner, and the housing bottom of the transmission housing (1) is provided with two sets of transmission mechanisms opposite to the guide hook grooves (2) in a symmetrically staggered manner, and the bracket of the transmission mechanism passes through the guide hook grooves (2) and is fixedly connected to the distance measuring sensor (3); The transmission mechanism comprises support seats (8) symmetrically arranged at the bottom of a support of a transmission housing (1) and close to a guide hook groove (2), a transmission screw (6) being rotatably connected between two groups of the support seats (8), and guide optical axes (7) being symmetrically arranged on both sides of the shaft of the transmission screw (6) between the two groups of support seats (8), a guide slide (9) guided by the guide optical axis (7) being sleeved on the outer side of the shaft of the transmission screw (6), and a connecting bracket (10) penetrating the guide hook groove (2) and connected to the distance measuring sensor (3) being arranged on one side of the frame of the guide slide (9).

2. The automatic film width measuring instrument according to claim 1, characterized in that: A transmission motor (5) fixed on a support seat (8) is mounted on one end of the shaft of the transmission screw rod (6).

3. The automatic film width measuring instrument according to claim 1, characterized in that: The shaft length of the transmission screw rod (6) is the same as the sliding groove length of the guide hook groove (2).

4. The automatic film width measuring instrument according to claim 1, characterized in that: The distance measuring sensor (3) is a U-shaped structure, and the distance measuring sensor (3) is a type of ultrasonic sensor or photoelectric sensor.

5. The automatic film width measuring instrument according to claim 1, characterized in that: The sliding grooves of the two groups of guide hook grooves (2) are mutually staggered and overlapped in the horizontal direction.

6. The automatic film width measuring instrument according to claim 1, characterized in that: A control box (4) is installed in the middle of the base frame of the transmission housing (1).

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