Pressing device for BOPP film production

Abstract

The utility model provides a pressing device for BOPP film production. The pressing device comprises supporting legs, a mounting table, a pressing roller assembly, a first rolling shaft, a rotating frame, a second rolling shaft, a supporting frame, supporting legs, a rotating frame, a rotating piece, a sliding rod, a supporting cylinder and a pressure sensor. The film tensioning device is provided with the pressure sensor and the rotating piece, and when the film is loosened and detection data of the pressure sensor reach the set minimum pressure, the controller starts the rotating piece, so that the rotating frame rotates, the first rolling shaft pulls the film, and finally the film is tensioned; therefore, real-time tensioning of the thin film can still be guaranteed under the condition that whether the thin film is loosened again or not does not need to be observed manually at regular time, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to BOPP film compression technical field, concretely relates to a kind of compression device for BOPP film production. BACKGROUND

[0002] BOPP film is widely used in various packaging fields due to its excellent printing performance and physical properties;Among them, common BOPP films include ordinary type, heat-seal type, cigarette packaging film, pearl film, metallized film and matt film, etc., mainly used for printing, bag making and compounding with other substrates.

[0003] And the above-mentioned film needs to be compressed during production, and two groups of rollers are usually used to achieve the film compression process, one group is a pressing roller assembly for continuously elastic compression of the film, and the other group is a tensioning roller assembly for tensioning the film to prevent the film from twisting, overlapping or affecting the compression effect of the pressing roller assembly. But in the existing common compression device, such as the patent document with the authorization announcement number "CN221093088U", the tensioning roller assembly therein can tension the film, but manual observation is required to observe whether the film is loose again, and then manually adjust the tensioning roller assembly to re-tension the film. When observing manually, the film needs to be significantly loose to be observed by the person, which reduces the precision and increases the labor cost. UTILITY MODEL CONTENT

[0004] The utility model aims at designing a kind of compression device for BOPP film production to solve the problems in the background art. To achieve the above-mentioned purpose, the utility model provides the following technical scheme: including the installation platform with support leg, the pressing roller assembly installed on the installation platform, the rotating frame provided with first roller shaft and the support frame provided with second roller shaft, further including the rotating member installed on the support leg and used to drive the rotating frame to rotate, the support cylinder slidably connected with the sliding rod in the support frame and installed on the support leg, and the pressure sensor installed on the support cylinder and connected with the controller. The rotating member is connected with the controller, the end of the sliding rod abuts against the detection end of the pressure sensor, and the film is wound on the first roller shaft and the second roller shaft after being pressed by the pressing roller assembly.

[0005] Further, the support cylinder is provided with a first straight slot in the axial direction, the sliding rod is provided with a positioning rod penetrating through the first straight slot, and the active distance of the positioning rod on the first straight slot does not exceed the maximum deformation amount of the detection end of the pressure sensor.

[0006] Further, the support cylinder is fixedly connected with an adjusting plate, the support leg is fixedly connected with a support plate, the support plate is provided with a second straight slot, the adjusting plate is provided with a through hole aligned with the second straight slot, and a bolt penetrates through the through hole and the second straight slot and is threadedly connected with a nut on the side of the support plate away from the adjusting plate.

[0007] Further, the support leg is provided with a fixed frame, the fixed frame is internally provided with a fixed lug, a rotating shaft is rotatably connected between the fixed lug and the support leg, the rotating handle of the rotating frame is fixedly connected to the rotating shaft, one end of the rotating shaft penetrates through the fixed lug and is rotatably connected with the output shaft of the rotating piece through a transmission mechanism, and the main body of the rotating piece is fixedly connected to the top of the fixed frame.

[0008] Further, the transmission mechanism comprises a worm connected with the output shaft of the rotating piece, and a worm wheel meshing with the worm, wherein the worm wheel is fixedly connected to the rotating shaft, and the axis of the worm wheel coincides with the axis of the rotating shaft.

[0009] Further, the fixed frame is provided with a notch, the lower part of the worm wheel penetrates through the notch, and two limit rods are symmetrically fixedly connected to the end face of the worm wheel, and when the rotating handle is rotated to the upper and lower limit angles, the limit rods will abut against the inner bottom of the fixed frame.

[0010] Further, the inner bottom of the fixed frame is fixedly connected with a limit switch connected with an alarm circuit, when the rotating handle is rotated to the upper and lower limit angles, the limit rods will trigger the limit switch, and the alarm circuit is connected with an alarm or a buzzer.

[0011] Further, the rotating frame is provided with two rotating handles, and the other rotating handle not connected with the rotating piece is fixedly connected to the other support leg.

[0012] Further, the support plate and the support leg are provided with a reinforcing rib.

[0013] Compared with the prior art, the utility model has the advantages that: the utility model is provided with a pressure sensor and a rotating piece, when the film is loose, the detection data of the pressure sensor reaches the set minimum pressure, the controller will start the rotating piece, so that the rotating frame rotates, the first roller pulls the film, and finally the film is tensioned, so that the utility model can ensure the tension of the film without manual observation, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] Fig. 1 It is a whole structure schematic view of the present application.

[0016] Fig. 2 It is a structure schematic view of the connecting place of the support cylinder and the support leg.

[0017] Fig. 3 It is a whole structure schematic view of the fixed frame.

[0018] Among them: 1, press the roller assembly; 2, film; 3, installation platform; 4, support leg; 5, rotating piece; 6, fixed frame; 7, transmission mechanism; 8, rotating frame; 9, support frame; 10, second roller shaft; 11, first roller shaft; 12, sliding rod; 13, positioning rod; 14, adjusting plate; 15, support cylinder; 16, pressure sensor; 17, second straight slot; 18, rotating handle; 19, rotating shaft; 20, notch; 21, limit switch; 22, limit rod; 23, worm wheel. Specific implementation

[0019] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purposes, the specific implementation, structure, features and effects according to the present application will be described in detail as follows by combining with the drawings and preferred embodiments.

[0020] Embodiment: please refer to Figs. 1-3The utility model provides a kind of BOPP film production with compact device, including installation platform 3 with support foot 4, press roller assembly 1 installed on installation platform 3, rotating frame 8 with first roller 11 and support frame 9 with second roller 10, it further includes rotating member 5 for driving rotating frame 8 rotation installed on support foot 4, support cylinder 15 with sliding rod 12 in support frame 9 sliding connection and installed on support foot 4 and pressure sensor 16 installed on support cylinder 15 and connected with controller, rotating member 5 is connected with controller, the end of sliding rod 12 is abutted with the detection end of pressure sensor 16, film 2 is coiled on first roller 11 and second roller 10 after being pressed by press roller assembly 1, wherein the sliding connection mode can adopt the form of clearance fit, rotating member 5 can adopt motor, and pressure sensor 16 adopts common piezoresistive pressure sensor 16, and the circuit in controller adopts the control circuit of conventional sensor control motor speed and rotation direction, which will not be described in detail here;When film 2 is relaxed, when the detection data of pressure sensor 16 reaches the lowest pressure set, pressure sensor 16 will send signal to controller, and controller controls motor to start, so that rotating frame 8 rotates, and then realizes the pulling of first roller 11 to film 2, realizes the tensioning of film 2, so that the utility model can guarantee the real-time tensioning of film 2 without the need for artificial regular checking to observe whether film 2 is relaxed again, and reduces the labor cost.

[0021] In addition, support cylinder 15 is provided with two, two sliding rods 12 in support frame 9 are connected with two symmetrical distribution support cylinders 15 respectively, to ensure the stability of support cylinder 15 connection, and among two pressure sensors 16, one is used to detect the maximum pressure (film 2 is too tight) received by first roller 11, and one is used to detect the minimum pressure (film 2 is too loose) received by first roller 11, to realize real-time feedback to controller, so that when film 2 is too tight, film 2 is relaxed, when film 2 is too loose, film 2 is tensioned, to continuously maintain film 2 in appropriate tight state.

[0022] In the embodiment, first straight slot is provided on support cylinder 15 along the axial direction, positioning rod 13 is provided on sliding rod 12 and penetrates first straight slot, and the active distance of positioning rod 13 on first straight slot does not exceed the maximum deformation of the detection end of pressure sensor 16, so as to protect pressure sensor 16, prevent sliding rod 12 from hitting pressure sensor 16.

[0023] The adjusting plate 14 is fixed on the supporting cylinder 15, the supporting plate is fixed on the supporting leg 4, the second straight slot 17 is arranged on the supporting plate, the through hole is arranged on the adjusting plate 14 and aligned with the second straight slot 17, the bolt is simultaneously penetrated through the through hole and the second straight slot 17 and is in threaded connection with the nut located on the side of the supporting plate away from the adjusting plate 14, so that the position adjustment of the supporting cylinder 15 along the axial direction is realized, the debugging of the device is facilitated, and different types of films 2 can be adapted.

[0024] The fixed frame 6 is arranged on the supporting leg 4, the fixed ear is arranged in the inside of the fixed frame 6, the rotating shaft 19 is rotatably connected between the fixed ear and the supporting leg 4, the rotating handle 18 of the rotating frame 8 is fixed on the rotating shaft 19, one end of the rotating shaft 19 is penetrated through the fixed ear and is rotatably connected with the output shaft of the rotating part 5 through the transmission mechanism 7, and the main body of the rotating part 5 is fixed on the top of the fixed frame 6, so that the connection between the rotating part 5 and the rotating handle 18 is realized.

[0025] The transmission mechanism 7 includes the worm connected with the output shaft of the rotating part 5, the worm wheel 23 meshed with the worm, the worm wheel 23 is fixed on the rotating shaft 19, and the axis line of the worm wheel 23 is coincident with the axis line of the rotating shaft 19, the self-locking of the worm wheel 23 and the worm is used for protection, and the large transmission ratio improves the rotation accuracy of the rotating handle 18, and is beneficial to the tension and relaxation of the film 2.

[0026] The notch 20 is arranged on the fixed frame 6, the lower part of the worm wheel 23 is penetrated through the notch 20, the end face of the worm wheel 23 is symmetrically fixed with the two limiting rods 22, when the rotating handle 18 is rotated to the upper and lower two limit angles, the limiting rods 22 will abut on the inner bottom of the fixed frame 6, when the film 2 is relaxed or tightened, the rotating handle 18 only needs to be adjusted within a certain angle range, when the adjustment cannot be realized when the angle exceeds the range, it is indicated that the film 2 wound on the second roller shaft 10 has a problem, for example, the film 2 is broken, the pressure detected by the pressure sensor 16 is zero, and the motor will continuously work, at this time, the angle limiting is performed on the motor and the related circuit is matched, for example, the temperature sensor senses that the motor heating speed is accelerated in a short time, so that the power supply can be cut off in time and the motor is protected.

[0027] In addition, when the worm is broken, the rotation angle of the rotating frame 8 can be reduced, the impact on the fixed frame 6 is reduced, and the first roller shaft 11 can also prevent the film 2 from being torn.

[0028] The inner bottom of the fixed frame 6 is fixedly connected with a limit switch 21 connected with an alarm circuit, when the rotating handle 18 is rotated to the upper and lower limit angles, the limit rod 22 will trigger the limit switch 21, and the alarm circuit is connected with a siren or a buzzer, as known from the above, when the rotating handle 18 is rotated to the upper and lower limit angles, it means that the film 2 is in an abnormal state, at this time, the siren or the buzzer is started, reminding the staff to check; the rotating frame 8 is provided with two rotating handles 18, the other rotating handle 18 not connected with the rotating part 5 is fixedly connected with the other supporting leg 4, so as to ensure the stable rotation of the rotating frame 8; and the reinforcing ribs are arranged between the supporting plate and the supporting leg 4, so as to improve the strength of the supporting plate.

[0029] Working principle: when the film 2 is relaxed, the detection data of the pressure sensor 16 reaches the set minimum pressure, the pressure sensor 16 sends a signal to the controller, and the controller controls the motor to start, so that the rotating frame 8 rotates, and then the first roller 11 pulls the film 2, so as to realize the tensioning of the film 2, therefore, without the need of manual checking to observe whether the film 2 is relaxed again, the real-time tensioning of the film 2 can still be ensured, and the labor cost is reduced.

[0030] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "upper", "lower", "left", "right", "front", "rear", and the like as used herein are used for description only and are not intended to be limiting.

[0031] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A pressing device for BOPP film production, comprising a mounting table with supporting feet, a pressing roller assembly mounted on the mounting table, a rotating frame provided with a first roller shaft, and a supporting frame provided with a second roller shaft, characterized in that: The support frame is provided with a rotating member for driving the rotating frame to rotate, a support cylinder in sliding connection with a sliding rod in the support frame and mounted on the support foot, and a pressure sensor mounted on the support cylinder and connected with a controller, the rotating member is connected with the controller, the end of the sliding rod is in abutment with the detection end of the pressure sensor, and the film is wound on the first and second rollers after being pressed by the pressing roller assembly.

2. The compacting device for BOPP film production as claimed in claim 1, wherein: The support cylinder is provided with a first straight slot in the axial direction, the sliding rod is provided with a positioning rod penetrating through the first straight slot, and the movable distance of the positioning rod on the first straight slot does not exceed the maximum deformation of the detection end of the pressure sensor.

3. The BOPP film production compacting device according to claim 1 or 2, characterized in that: The support cylinder is fixedly connected with an adjusting plate, the support foot is fixedly connected with a support plate, the support plate is provided with a second straight slot, the adjusting plate is provided with a through hole aligned with the second straight slot, and a bolt penetrates through the through hole and the second straight slot and is in threaded connection with a nut located on the side of the support plate away from the adjusting plate.

4. The compression device for BOPP film production according to claim 3, characterized in that: The support foot is provided with a fixed frame, the inside of the fixed frame is provided with a fixed lug, a rotating shaft is in rotational connection between the fixed lug and the support foot, the rotating handle of the rotating frame is fixedly connected with the rotating shaft, one end of the rotating shaft penetrates through the fixed lug and is in rotational connection with the output shaft of the rotating member through a transmission mechanism, and the main body of the rotating member is fixedly connected with the top of the fixed frame.

5. The compression device for BOPP film production as claimed in claim 4, wherein: The transmission mechanism comprises a worm connected with the output shaft of the rotating member, and a worm gear engaged with the worm, the worm gear is fixedly connected with the rotating shaft, and the axis of the worm gear coincides with the axis of the rotating shaft.

6. The compression device for BOPP film production as claimed in claim 5, wherein: The fixed frame is provided with a notch, the lower part of the worm gear penetrates through the notch, the end face of the worm gear is fixedly connected with two limit rods in symmetry, and when the rotating handle is rotated to the upper and lower limit angles, the limit rods will abut on the inner bottom of the fixed frame.

7. The compression device for BOPP film production as claimed in claim 6, wherein: The inner bottom of the fixed frame is fixedly connected with a limit switch connected with an alarm circuit, when the rotating handle is rotated to the upper and lower limit angles, the limit rods will trigger the limit switch, and the alarm circuit is connected with an alarm or a buzzer.

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