CN112665981B - Polyester screen tension detection device - Google Patents
Polyester screen tension detection device Download PDFInfo
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- CN112665981B CN112665981B CN202011485954.8A CN202011485954A CN112665981B CN 112665981 B CN112665981 B CN 112665981B CN 202011485954 A CN202011485954 A CN 202011485954A CN 112665981 B CN112665981 B CN 112665981B
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Abstract
One or more embodiments of the present disclosure provide a tension detection device for a polyester screen, including a detection platform, two sides of the detection platform are provided with tension rollers, a clamping mechanism is disposed in a clamping groove of each tension roller, so as to clamp an end portion of the screen, the detection platform is relatively provided with a light emitter and a light receiving sensor, so as to emit and receive planar light beams, a plurality of telescopic units arranged in a rectangular manner are disposed in a groove at the top end of the detection platform, a motor drives a rotating shaft to rotate, so as to drive a left worm and a right worm which are sleeved on the rotating shaft to rotate synchronously, so as to drive a worm wheel and the tension rollers on two sides to rotate relatively, so as to wind around the tension screen, so as to detect lateral pressure of a collision rotating hole of the roller shaft through a pressure detector, the lateral pressure is completely expanded and tensioned along with the screen, all the telescopic units are pressed down, so as to trigger a metering mechanism to meter a rotating distance of the worm wheel, the broken screen is penetrated through a part of the telescopic units, so as to trigger the metering mechanism to stop metering and trigger the motor to stop the metering, so as to detect tension and elongation of the screen.
Description
Technical Field
One or more embodiments of the present description relate to screen processing technology field, especially relate to a polyester screen tension detection device.
Background
In the process of processing a screen product, a tension detection procedure is often necessary to ensure that the screen product meets quality parameter indexes required by a customer, an existing tension testing device generally clamps two ends of the screen and then directly transversely moves and draws the screen until the screen is completely broken to obtain a maximum tension bearing value of the screen, but in order to ensure stable and accurate detection of the tension, strict, tight and firm clamping of the two ends of the screen and the clamping force of the two ends are obviously required to be maintained as much as possible, so that in the actual operation, the stability and accurate detection difficulty is high, and the screen is prone to break at the clamping end first in the tension detection process, so that stable and accurate tension detection is affected.
Disclosure of Invention
In view of this, an object of one or more embodiments of the present disclosure is to provide a polyester screen tension detection apparatus, so as to achieve synchronous detection of screen tension and elongation with high efficiency, stability and accuracy, and facilitate convenient and efficient use detection and further increase of detection automation degree.
In view of the above, one or more embodiments of the present disclosure provide a polyester screen tension detecting apparatus, including:
the detection table is fixed with a frame;
the tensioning rollers are arranged on two sides of the detection table, roller shafts are coaxially fixed at the side ends of the tensioning rollers, roller frames are fixed on two sides of the rack, rotating holes are formed in the roller frames, the roller shafts penetrate through the rotating holes, the roller shaft on one side penetrates through the rotating holes and is coaxially fixed with a worm wheel, clamping grooves are formed in symmetrical sides of the two tensioning rollers, and clamping mechanisms are arranged in the clamping grooves and used for clamping and fixing the end portions of the screen;
the motor is fixed on one side of the detection table;
the rotating shaft is coaxially fixed on an output shaft of the motor, the axial section of the rotating shaft is designed into a polygonal shape, one end of the rotating shaft is fitted and sleeved with a left worm in a hollow design, the other end of the rotating shaft is fitted and sleeved with a right worm in a hollow design, and the thread turning direction of the left worm is opposite to that of the right worm so as to be respectively meshed with worm wheels on two sides;
the pressure detector is fixed on the inner side wall of the rotary hole and used for detecting the lateral pressure of the roll shaft against the rotary hole;
the metering mechanism is arranged on one side of the worm wheel and is used for metering the rotating distance of the worm wheel;
the light emitter is arranged on the detection platform and used for emitting a horizontal plane light beam;
the light receiving sensor is arranged on the other side, opposite to the light emitter, of the detection table and used for receiving the plane light beam, and the light receiving sensor is electrically connected with the motor and the metering mechanism;
the groove is arranged at the top end of the detection table and is positioned in the middle of the tensioning rollers at the two sides, a plurality of telescopic units which are arranged close to the rectangle are arranged in the groove, and the outer diameter of the cross section of each telescopic unit is larger than the aperture of the screen mesh;
the motor drives the rotating shaft to rotate, the worm gears on two sides of the transmission rotate relatively to drive the tensioning roller to wind the tensioning screen, the telescopic unit is pressed downwards to enable the light receiving sensor to receive all plane light beams to trigger the metering mechanism to start metering, and the broken screen is pulled out by moving upwards through part of the telescopic unit to shield part of the plane light beams to trigger the metering mechanism to stop metering and trigger the motor to stop rotating.
Preferably, fixture is including electric telescopic handle, clamping jaw, and in electric telescopic handle was fixed in the draw-in groove, the clamping jaw was fixed in electric telescopic handle's expansion end, stretches out through electric telescopic handle to can drive the clamping jaw and remove the inside wall of contradicting the draw-in groove, with the centre gripping screen cloth.
Preferably, the metering mechanism comprises a gear, a connecting frame and a photoelectric counter, the gear is coaxially fixed on the outer side of the worm wheel, the connecting frame is fixed at the bottom end of the rack, the photoelectric counter is fixed at the bottom end of the connecting frame, the photoelectric counter senses and counts towards the tooth position of the gear and is used for counting the number of the rotated gear teeth of the gear, and the photoelectric counter is electrically connected with the light receiving sensor.
Preferably, the flexible unit is including fore-set, spring, and the fore-set is closely adjacent in proper order in vertically locating the recess, and the fore-set is the rectangle and arranges, and the spring is fixed in between the diapire in fore-set bottom and the recess to can promote the fore-set and wear out outside the recess top, the cross section external diameter of fore-set is greater than the aperture of screen cloth.
Preferably, the outer diameter of the cross section of the top column is 1.2 to 2 times of the pore size of the screen mesh.
Preferably, the rotating shaft is provided with limiting flanges at intervals on two sides of the left worm and two sides of the right worm.
From the above, it can be seen that the tension detecting device for the polyester screen mesh provided by one or more embodiments of the present disclosure is a tension detecting device for the polyester screen mesh, which comprises a detecting table, a frame fixed on the detecting table, two tensioning rollers arranged on two sides of the detecting table, roller shafts coaxially fixed on the side ends of the tensioning rollers, roller frames fixed on two sides of the frame, rotating holes arranged on the roller frames, the roller shafts penetrating through the rotating holes to freely rotate axially, worm gears coaxially fixed on the roller shafts, clamping grooves arranged on symmetrical sides of the two tensioning rollers, clamping mechanisms arranged in the clamping grooves to symmetrically clamp and fix two end portions of the screen mesh to be detected, a motor fixed on one side of the detecting table, a rotating shaft coaxially fixed on an output shaft of the motor, a left worm with hollow design sleeved on one end of the rotating shaft, and a right worm with hollow design sleeved on the other end of the rotating shaft to mesh with the worm gears on two sides respectively, a pressure detector is fixed on the inner side wall of the rotary hole, a metering mechanism is arranged on one side of the worm wheel and used for metering the rotating distance of the worm wheel, a light emitter is arranged on the detection platform and used for emitting horizontal plane light beams, a light receiving sensor is arranged on the other side of the detection platform opposite to the light emitter and used for receiving the plane light beams, the light receiving sensor is electrically connected with the motor and the metering mechanism, wherein the light emitter and the light receiving sensor can be selected from laser light emitters and laser light receiving sensors which are available on the market and can emit plane light beams consisting of a plurality of parallel light beams and receive corresponding light beams and sense the energy of the received light beams to be converted into corresponding electric signals, a groove is arranged at the top end of the detection platform, the groove is positioned in the middle position of the tension rollers at two sides, a plurality of telescopic units which are arranged in a close proximity rectangular shape are arranged in the groove, and the top ends of the telescopic units penetrate through the groove top end, the rotating shaft is driven to rotate by the motor, the axial section of the rotating shaft is designed into a polygonal shape, so that the left worm and the right worm which are arranged in a fit sleeve can be driven to synchronously rotate, the thread turning direction of the left worm is opposite to the thread turning direction of the right worm, so that worm wheels on two sides are driven to relatively rotate, the tensioning roller winding clamping mechanism is driven to clamp and tension the end parts of two ends of a fixed screen, the screen is gradually wound and tensioned, the method is different from the traditional direct clamping and transverse moving tensioning form, the tight and firm clamping and tensioning of the screen are obviously more favorably realized, the operation is simple, convenient and efficient, the clamping ends are protected by winding, the direct fracture of the clamping ends in the tensioning detection is more favorably avoided, the stable and accurate detection is influenced, the clamping grooves and the clamping mechanism are symmetrically arranged on the tensioning rollers on two sides, and the tensioning rollers on two sides are driven by the same motor to synchronously and relatively rotate and wind, therefore, the same tensioning clamping force at two ends is favorably maintained, in addition, just because the left worm and the right worm are fit and sleeved on the rotating shaft, the roll shaft, the worm gear and the left worm or the right worm meshed and connected with the roll shaft are connected in a non-fixed position in the transverse direction, no pressure is formed on the side end of the inner wall of the rotary hole under the initial state of the tensioning roller, when the tensioning roller tensions the screen, the pressure is formed on the inner side wall of the rotary hole through the roll shaft, the lateral pressure of the roll shaft against the rotary hole is detected through a pressure detector, so that the tension detection is realized, meanwhile, the tension is completely expanded along with the screen, and because the outer diameter of the cross section of the telescopic unit is larger than the aperture of the screen, all the telescopic units which are pushed out can be naturally pressed down, so that the light receiving sensor receives all plane light beams, the metering mechanism can be triggered to start metering, and the local breakage at a fine part appears along with the continuous winding and tensioning screen, the method comprises the steps of enabling a part of telescopic units to move upwards to penetrate through a broken screen, naturally shielding part of plane light beams, stopping metering by a trigger metering mechanism and stopping rotation of a trigger motor, so that the maximum pressure value sensed by a pressure detector is obtained, the rotation distance from complete expansion and tensioning to breakage of the trigger metering mechanism is completely metered, the maximum tension bearing value and the elongation value of the screen which are more accurate and more fit with reality can be obtained, and efficient and stable detection and convenient and fast automatic control in the detection are facilitated.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a worm wheel, a left worm and a right worm which are meshed with each other according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a telescopic unit according to an embodiment of the present invention;
FIG. 4 is a top view of a groove of an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a clamping mechanism according to an embodiment of the invention.
In the figure: 1. a detection table; 2. a frame; 21. a roller frame; 22. hole turning; 3. a tension roller; 31. a roll shaft; 32. a card slot; 4. a worm gear; 5. a clamping mechanism; 51. an electric telescopic rod; 52. a clamping jaw; 6. a motor; 61. a rotating shaft; 62. a left worm; 63. a right worm; 64. a limiting flange; 7. a pressure detector; 8. a metering mechanism; 81. a gear; 82. a connecting frame; 83. a photoelectric counter; 9. a light emitter; 10. a light receiving sensor; 11. a groove; 12. a telescopic unit; 121. a top pillar; 122. a spring.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A tension detection device for a polyester screen is disclosed, as shown in figures 1 to 5, and comprises a detection table 1, a frame 2 is fixed on the detection table 1, tension rollers 3 are arranged on two sides of the detection table 1, roller shafts 31 are coaxially fixed on the side ends of the tension rollers 3, roller frames 21 are fixed on two sides of the frame 2, rotating holes 22 are formed in the roller frames 21, the roller shafts 31 penetrate through the rotating holes 22, the roller shafts 31 on one side penetrate through the rotating holes 22 and are coaxially fixed with worm gears 4, clamping grooves 32 are formed in symmetrical sides of the two tension rollers 3, clamping mechanisms 5 are arranged in the clamping grooves 32 and are used for clamping and fixing the end portions of the screen, a motor 6 is fixed on one side of the detection table 1, a rotating shaft 61 is coaxially fixed on an output shaft of the motor 6, the axial cross section of the rotating shaft 61 is designed to be polygonal, a left worm 62 in a hollow design is fitted on one end of the rotating shaft 61, a right worm 63 in a hollow design is fitted on the other end of the rotating shaft, the thread turning direction of the left worm 62 is opposite to that of the right worm 63 to be respectively meshed with the worm gears 4 on two sides, a pressure detector 7 is fixed on the inner side wall of the rotary hole 22 and used for detecting the lateral pressure of the roller shaft 31 abutting against the rotary hole 22, a metering mechanism 8 is arranged on one side of the worm gear 4 and used for metering the rotating distance of the worm gear 4, a light emitter 9 is arranged on the detection table 1 and used for emitting horizontal plane light beams, a light receiving sensor 10 is arranged on the detection table 1 and opposite to the light emitter 9 and used for receiving the plane light beams, the light receiving sensor 10 is electrically connected with the motor 6 and the metering mechanism 8, a groove 11 is arranged at the top end of the detection table 1, the groove 11 is positioned in the middle position of the tensioning rollers 3 on two sides, a plurality of telescopic units 12 which are arranged close to the rectangle are arranged in the groove 11, the outer diameter of the cross section of the telescopic units 12 is larger than the aperture of the screen, and the rotating shaft 61 is driven by the motor 6 to rotate, the worm gears 4 on two sides of the transmission rotate relatively to drive the tension roller 3 to wind and tension the screen, the telescopic unit 12 is pressed downwards, so that the light receiving sensor 10 receives all the plane light beams to trigger the metering mechanism 8 to start metering, and part of the telescopic unit 12 moves upwards to penetrate out of the broken screen to shield part of the plane light beams to trigger the metering mechanism 8 to stop metering and trigger the motor 6 to stop rotating.
The invention arranges a detection platform 1, a frame 2 is fixed on the detection platform 1, two sides of the detection platform 1 are provided with tension rollers 3, the side ends of the tension rollers 3 are coaxially fixed with roller shafts 31, two sides of the frame 2 are fixed with roller frames 21, the roller frames 21 are provided with rotating holes 22, the roller shafts 31 are arranged through the rotating holes 22 so as to freely rotate along the rotating holes 22 in the axial direction, the roller shaft 31 at one side penetrates out of the rotating hole 22 and is coaxially fixed with worm gears 4, one symmetrical side of the two tension rollers 3 is provided with clamping grooves 32, clamping mechanisms 5 are arranged in the clamping grooves 32 so as to symmetrically clamp and fix the end parts of two ends of a screen to be detected, one side of the detection platform 1 is fixed with a motor 6, a rotating shaft 61 is coaxially fixed on an output shaft of the motor 6, one end of the rotating shaft 61 is sheathed with a left worm 62 in a hollow design in a jointing manner, the other end of the rotating shaft 61 is sheathed with a right worm 63 in a hollow design in a jointing manner so as to be respectively meshed with the worm gears 4 at two sides, a pressure detector 7 is fixed on the inner side wall of the rotary hole 22, a metering mechanism 8 is arranged on one side of the worm wheel 4 and is used for metering the rotating distance of the worm wheel 4, a light emitter 9 is arranged on the detection table 1 and is used for emitting horizontal plane light beams, a light receiving sensor 10 is arranged on the other side, opposite to the light emitter 9, of the detection table 1 and is used for receiving the plane light beams, the light receiving sensor 10 is electrically connected with the motor 6 and the metering mechanism 8, wherein the light emitter 9 and the light receiving sensor 10 can select the laser light emitter and the laser receiving sensor which are available on the market, plane light beams formed by a plurality of parallel light beams can be emitted, the corresponding light beams are received, the energy of the received light beams is sensed and converted into corresponding electric signals, a groove 11 is arranged at the top end of the detection table 1, the groove 11 is arranged in the middle position of the tensioning rollers 3 on two sides, and a plurality of telescopic units 12 which are arranged in a close to a rectangle are arranged in the groove 11, the top end of the telescopic unit 12 penetrates through the top end of the groove 11, so that the motor 6 drives the rotating shaft 61 to rotate, the axial section of the rotating shaft 61 is designed to be polygonal, so that the left worm 62 and the right worm 63 which are fitted and sleeved on the rotating shaft can be driven to synchronously rotate, and the thread turning direction of the left worm 62 is opposite to the thread turning direction of the right worm 63, so that the worm wheels 4 on two sides are driven to relatively rotate, so that the tensioning roller 3 is driven to wind the two end parts of the screen clamped and fixed by the clamping mechanism 5 to gradually wind and tension the screen, which is different from the traditional direct clamping and transverse moving tensioning form, the tight and firm clamping and tensioning of the screen are obviously more favorably realized, the operation is simple, convenient and efficient, and the clamping ends are protected by winding, so that the direct fracture of the clamping ends in the tensioning detection is more favorably avoided, the stable and accurate detection is influenced by the clamping grooves 32 and the clamping mechanisms 5 which are symmetrically arranged on the tensioning rollers 3 on two sides, and the same motor 6 drives the two sides of the tension roller 3 to rotate and wind synchronously and relatively, thereby being more beneficial to maintaining the same tension clamping force at the two ends, in addition, the left worm 62 and the right worm 63 are jointed and sleeved on the rotating shaft 61, so that the roller shaft 31 and the worm wheel 4 and the left worm 62 or the right worm 63 meshed and connected with the same are not connected with a fixed position in the transverse direction, therefore, no pressure is formed at the side end of the inner wall of the rotating hole 22 in the initial state of the tension roller 3, when the tension roller 3 tensions the screen, the roller shaft 31 can form pressure on the inner side wall of the rotating hole 22, thereby the pressure detector 7 detects the lateral pressure of the roller shaft 31 against the rotating hole 22, so as to realize the tension detection, and simultaneously, the outer diameter of the cross section of the telescopic unit 12 is larger than the aperture of the screen, thereby all the telescopic units 12 which can be pushed out naturally, so that the light receiving sensor 10 receives all the plane light beams, the metering mechanism 8 can be triggered to start metering, and local breakage at a fine position occurs along with the continuous winding and tensioning of the screen, part of the telescopic unit 12 is moved upwards to penetrate out of the broken screen, part of the plane light beams are naturally shielded, the metering mechanism 8 is triggered to stop metering and the trigger motor 6 stops rotating, the maximum pressure value sensed by the pressure detector 7 is used, the metering mechanism 8 is triggered to completely meter the rotating distance from complete expansion and tensioning to breakage, the actual maximum tension bearing value and elongation value of the screen can be obtained accurately and more accurately, and the efficient and stable detection and convenient automatic control in the detection are facilitated.
In the embodiment of the present invention, the clamping mechanism 5 includes an electric telescopic rod 51 and a clamping jaw 52, the electric telescopic rod 51 is fixed in the clamping groove 32, and the clamping jaw 52 is fixed at the movable end of the electric telescopic rod 51, so that the clamping jaw 52 can be driven to move to abut against the inner side wall of the clamping groove 32 by extending out of the electric telescopic rod 51, so as to clamp the screen.
In the embodiment of the present invention, the metering mechanism 8 includes a gear 81, a connecting frame 82, and a photoelectric counter 83, the gear 81 is coaxially fixed at the outer side of the worm wheel 4, the connecting frame 82 is fixed at the bottom end of the frame 2, the photoelectric counter 83 is fixed at the bottom end of the connecting frame 82, the photoelectric counter 83 senses and counts towards the tooth space position of the gear 81, wherein the photoelectric counter 83 can generate a beam of parallel light based on itself, and each time the beam of light is shielded, the working state of the photoelectric element changes once, the number of shielded times can be recorded by the counter through an amplifier, so as to complete sensing and counting, so as to realize the number of teeth rotated by the metering gear 81, the rotating distance of the worm wheel 4 and the tension roller 3, i.e. the elongation of the screen, can be obtained through simple calculation of the transmission ratio, the photoelectric counter 83 is electrically connected with the light receiving sensor 10, so as to trigger the photoelectric counter 83 to start and stop counting through the difference of the light amount sensed by the light receiving sensor 10, thereby realizing the elongation detection of the complete process.
In the embodiment of the present invention, the telescopic unit 12 includes a top column 121 and a spring 122, the top column 121 is vertically disposed in the groove 11 in a close proximity to each other in sequence, the top column 121 is arranged in a rectangular shape and arranged in a sieve hole corresponding to the sieve mesh, the spring 122 is fixed between the bottom end of the top column 121 and the bottom wall of the groove 11 to push the top column 121 to pass through the top end of the groove 11, the outer diameter of the cross section of the top column 121 is larger than the diameter of the sieve mesh, and thus the top column 121 can be pushed out by the spring 122 only when the sieve mesh is broken.
In the embodiment of the present invention, the outer diameter of the cross section of the top pillar 121 is 1.2 to 2 times of the size of the mesh aperture, so as to facilitate the detection of breakage at a finer part.
In the embodiment of the present invention, the rotating shaft 61 is provided with a spacing flange 64 at both sides of the left worm 62 and both sides of the right worm 63, so as to perform a certain spacing function.
In the tension detection device for the polyester screen, when in use, the tension rollers 3 are arranged on two sides of a detection table 1, the roller frames 21 are fixed on two sides of a frame 2, the roller shafts 31 are arranged in rotary holes 22 in a penetrating way and are coaxially fixed with worm gears 4, a clamping groove 32 is arranged on one symmetrical side of the two tension rollers 3, a clamping mechanism 5 is arranged in the clamping groove 32 to symmetrically clamp and fix the end parts of two ends of the screen, a light emitter 9 is arranged on the detection table 1 to emit horizontal plane light beams, a light receiving sensor 10 is arranged on the other side, opposite to the light emitter 9, of the detection table 1 and is used for receiving the plane light beams, the light receiving sensor 10 is electrically connected with a motor 6 and a metering mechanism 8, a groove 11 is arranged at the top end of the detection table 1, a plurality of telescopic units 12 which are arranged close to a rectangle are arranged in the groove 11, the motor 6 drives a rotary shaft 61 to rotate during detection so as to drive a left worm 62 and a right worm 63 which are sleeved with the rotary shaft to rotate synchronously, the worm wheel 4 and the tension roller 3 on two sides are driven to rotate relatively to wind and tension the screen gradually, the lateral pressure of the roller shaft 31 against the rotating hole 22 is detected through the pressure detector 7, the screen is completely unfolded and tensioned, all the telescopic units 12 are naturally pressed down to enable the light receiving sensor 10 to receive all the plane light beams, the metering mechanism 8 is triggered to start metering the rotating distance of the worm wheel 4, the screen is continuously wound and tensioned to generate local breakage of a fine part, part of the telescopic units 12 penetrate out of the broken screen to shield part of the plane light beams, the metering mechanism 8 is triggered to stop metering and the trigger motor 6 is triggered to stop rotating, so that high-efficiency, stable and accurate synchronous detection of screen tension and elongation is realized, wherein the clamping mechanism 5 comprises an electric telescopic rod 51 and a clamping jaw 52, and the electric telescopic rod 51 extends out, in order to drive clamping jaw 52 and remove the inside wall of contradicting on draw-in groove 32, with the centre gripping screen cloth, metering mechanism 8 is including gear 81, link 82, photoelectric counter 83, tooth's socket position sensing count towards gear 81 through photoelectric counter 83, the rotation distance of worm wheel 4 and tensioning roller 3 can be reachd through simple drive ratio calculation, the percentage elongation of screen cloth promptly, telescoping unit 12 is including fore-set 121, spring 122, fore-set 121 is closely adjacent vertically in proper order locates in recess 11, and fore-set 121 is the rectangle and arranges, outside can promote fore-set 121 to wear out recess 11 top through spring 122, the cross section external diameter size of fore-set 121 is between 1.2 to 2 times of screen cloth aperture size, the both sides that lie in left worm 62 on the pivot 61 and the both sides of right worm 63 all interval are equipped with spacing flange 64, in order to play certain limiting displacement.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (5)
1. A polyester screen tension detection device is characterized by comprising:
the detection platform is fixedly provided with a rack;
the tensioning rollers are arranged on two sides of the detection table, the roller shafts are coaxially fixed at the side ends of the tensioning rollers, the roller frames are fixed on two sides of the rack, rotating holes are formed in the roller frames, the roller shafts penetrate through the rotating holes, the roller shafts on one side penetrate through the rotating holes and are coaxially fixed with worm gears, clamping grooves are formed in symmetrical sides of the two tensioning rollers, and clamping mechanisms are arranged in the clamping grooves and used for clamping and fixing the end portions of the screen cloth;
the motor is fixed on one side of the detection table;
the rotating shaft is coaxially fixed on an output shaft of the motor, the axial section of the rotating shaft is designed to be in a polygonal shape, one end of the rotating shaft is fitted and sleeved with a left hollow worm, the other end of the rotating shaft is fitted and sleeved with a right hollow worm, and the thread turning directions of the left worm and the right worm are opposite to each other so as to be respectively meshed with the worm gears on two sides;
the pressure detector is fixed on the inner side wall of the rotary hole and used for detecting the lateral pressure of the roll shaft abutting against the rotary hole;
the metering mechanism is arranged on one side of the worm wheel and is used for metering the rotating distance of the worm wheel;
the light emitter is arranged on the detection table and used for emitting a horizontal plane light beam;
the light receiving sensor is arranged on the other side, opposite to the light emitter, of the detection table and used for receiving the plane light beam, and the light receiving sensor is electrically connected with the motor and the metering mechanism;
the groove is formed in the top end of the detection table and is located in the middle of the tensioning rollers on the two sides, a plurality of telescopic units which are arranged close to the rectangle are arranged in the groove, and the outer diameter of the cross section of each telescopic unit is larger than the aperture of the screen;
the motor drives the rotating shaft to rotate so as to drive the worm gears on two sides to rotate relatively, so as to drive the tensioning roller to tension the screen around the coil, the telescopic unit is pressed downwards, so that the light receiving sensor receives all the plane light beams to trigger the metering mechanism to start metering, and part of the telescopic unit moves upwards to penetrate out of the broken screen so as to shield part of the plane light beams to trigger the metering mechanism to stop metering and trigger the motor to stop rotating;
the telescopic unit comprises a top column and a spring, the top column is vertically arranged in the groove in a close-proximity mode, the top column is arranged in a rectangular mode, the spring is fixed to the bottom end of the top column and between the bottom walls in the groove and can push the top column to penetrate out of the top end of the groove, and the outer diameter of the cross section of the top column is larger than the aperture of the screen.
2. The tension detecting device for the polyester screen cloth according to claim 1, wherein the clamping mechanism comprises an electric telescopic rod and a clamping jaw, the electric telescopic rod is fixed in the clamping groove, the clamping jaw is fixed at the movable end of the electric telescopic rod, and the clamping jaw is driven to move to abut against the inner side wall of the clamping groove by extending out of the electric telescopic rod so as to clamp the screen cloth.
3. The device for detecting tension of polyester screen cloth according to claim 1, wherein the metering mechanism comprises a gear, a connecting frame and a photoelectric counter, the gear is coaxially fixed outside the worm wheel, the connecting frame is fixed at the bottom end of the frame, the photoelectric counter is fixed at the bottom end of the connecting frame, the photoelectric counter senses and counts the number of teeth of the gear towards the teeth position of the gear so as to count the number of the teeth of the gear, and the photoelectric counter is electrically connected with the light receiving sensor.
4. The tension detecting device for polyester screen cloth as claimed in claim 1, wherein the outer diameter of the cross section of the top pillar is between 1.2 and 2 times of the size of the aperture of the screen cloth.
5. The device for detecting the tension of the polyester screen cloth as claimed in claim 1, wherein the rotating shaft is provided with a limiting flange at intervals on both sides of the left worm and both sides of the right worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485954.8A CN112665981B (en) | 2020-12-16 | 2020-12-16 | Polyester screen tension detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485954.8A CN112665981B (en) | 2020-12-16 | 2020-12-16 | Polyester screen tension detection device |
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| CN112665981A CN112665981A (en) | 2021-04-16 |
| CN112665981B true CN112665981B (en) | 2022-12-02 |
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