Rolling shutter tube correction method and correction mechanism

Abstract

The present invention discloses a method and a mechanism for correcting a roller blind tube. The correction method comprises the following steps: a. straightening the tube (1) to obtain product A; b. fixing one end of product A and rotating the other end of product A so that a slot (100) on product A is kept parallel to the axis of product A, or driving both ends of product A to rotate in opposite directions at the same time; the correction mechanism comprises a feeding mechanism (2), and the discharge end of the feeding mechanism (2) is provided with two symmetrically distributed torsion mechanisms (3); the torsion mechanism (3) comprises a bottom plate (300), a movable frame (301) is provided on the bottom plate (300), a telescopic driving mechanism is provided on the movable frame (301), a torsion head is provided on the movable frame (301), and a torsion driving mechanism is provided on the torsion head. The present invention has the advantages of being able to correct the torsion of the tube, reducing the loss of the roller blind manufacturer, and avoiding delays in the delivery cycle, and also has the advantages of high correction efficiency.

Description

Technical Field

[0001] The invention belongs to the field of rolling curtain tube processing equipment, and in particular relates to a rolling curtain tube correction method and correction mechanism. Background Art

[0002] The roller shutter includes a roller tube formed by aluminum extrusion. A driving mechanism is provided at the end of the roller tube, and fabric is provided on the roller tube. The driving mechanism drives the roller tube to rotate, causing the fabric to roll up or detach on the roller tube, thereby realizing the opening and closing of the roller shutter.

[0003] The most common winding tube structure on the market has a slot on the winding tube, and a U-shaped rib is formed corresponding to the slot. The insertion end of the driving mechanism drives the winding tube to rotate through the rib. A hard plastic belt is glued to the upper end of the fabric. After folding the plastic belt and the fabric, the plastic belt is passed through the slot. The upper end of the fabric is connected to the winding tube, and the rotation of the winding tube drives the fabric to roll up or detach.

[0004] However, during the production of roller blinds, it was discovered that batches of roller blinds delivered from the roller blind manufacturers often had problems with the groove having a spiral angle. This is usually due to wear or deformation on the guide roller of the extruder, which causes the front end (free end) of the roller blind to twist as it moves forward, while the rear end of the roller blind is still constrained by the extrusion die and does not twist with it. This results in an angular twist between the two ends of the formed roller blind, forming a spiral angle on the groove that cannot remain parallel to the axis of the roller blind. When such a roller blind is used to make roller blinds, the groove that serves as the reference has twisted, and the vertical direction of the fabric cannot remain perpendicular to the axis of the roller blind. The fabric is particularly prone to deviation during the winding process, and the deviated fabric will get stuck between the roller blind and the drive mechanism, causing roller blind malfunction. Therefore, roller blinds with a spiral angle in the groove cannot be used and can only be discarded. This not only causes losses, but also requires new orders to the roller blind manufacturer for production replenishment when the inventory is insufficient, which may delay the delivery cycle. Summary of the Invention

[0005] The object of the present invention is to provide a method and mechanism for correcting a roller blind tube. The present invention has the advantage of being able to correct the torsion of the tube, thereby reducing losses for roller blind manufacturers and avoiding delays in delivery cycles, and also has the advantage of high correction efficiency.

[0006] The technical solution of the present invention is a method for calibrating a roller blind tube, comprising the following steps:

[0007] a. Straighten the coiled tube and get A grade.

[0008] b. Fix one end of product A and rotate the other end so that the slot on product A remains parallel to the axis of product A, or drive both ends of product A to rotate in opposite directions at the same time so that the slot on product A remains parallel to the axis of product A.

[0009] In the above-mentioned rolling shutter tube calibration method, step b is to first use a projection device to form a projection line on product A that is parallel to the axis of product A, and then rotate the other end of product A to keep the card slot parallel to the projection line.

[0010] The correction mechanism for implementing the above-mentioned roller shutter tube correction method includes a feeding mechanism, and the discharge end of the feeding mechanism is provided with two symmetrically distributed torsion mechanisms; the torsion mechanism includes a base plate, a slidingly connected movable frame is provided on the base plate, a telescopic drive mechanism is provided on the movable frame, a torsion head is provided on the torsion head, and a torsion drive mechanism is provided on the torsion head.

[0011] In the aforementioned correction mechanism, the feeding mechanism includes a feeding frame, an inclined slide is provided on the top of the feeding frame, a rotating shaft connected to the feeding frame is provided on one side of the lower end of the slide, a first motor connected to the rotating shaft is provided on the feeding frame, at least two feeding wheels are provided on the rotating shaft, and a plurality of feeding grooves are provided on the outer peripheral surface of the feeding wheel, all of which cooperate with the winding tube.

[0012] In the aforementioned correction mechanism, the torsion head includes a driving shaft with one end passing through the movable frame, and a driving small shaft is provided at the other end of the driving shaft. The driving shaft and the driving small shaft are connected with each other at a conical surface, and a cylindrical sleeve is provided on the outside of the driving small shaft. One end of the sleeve extends to the outside of the driving shaft and radially outward to form a flange edge. A spring is provided between the flange edge and the movable frame, and a baffle fixed to the driving small shaft is provided at the other end of the sleeve. The driving shaft and the driving small shaft are respectively maintained in sliding connection with the two ends of the sleeve. A through hole is provided on the outer circumferential surface of the sleeve, a top block is provided in the through hole, and a rebound mechanism is provided between the top block and the sleeve.

[0013] In the aforementioned correction mechanism, the rebound mechanism includes a through groove located on the outer end surface of the top block and two grooves located on the outer peripheral surface of the sleeve. One end of the groove is connected to the through hole, and the two grooves are respectively located at the two ends of the through groove. An elastic rope is provided in the through groove, and the two ends of the elastic rope are respectively fixed on the bottom surfaces of the two grooves.

[0014] In the aforementioned correction mechanism, the torsion drive mechanism includes a second motor fixed to the movable frame, a worm is provided at the output end of the second motor, and a worm wheel connected to the driving shaft is provided on one side of the worm.

[0015] In the aforementioned correction mechanism, the telescopic drive mechanism includes a cylinder fixed to the base plate, and the output end of the cylinder is connected to the movable frame.

[0016] Compared with the prior art, the present invention utilizes a loading mechanism to realize the feeding of the coil tube, utilizes two twisting mechanisms to fix the two ends of the coil tube respectively, applies opposite torques to the two ends of the coil tube, and straightens the coil tube. On the twisted coil tube, the slot is parallel to the axis of the coil tube, and the coil tube can be reused, which reduces the loss of the roller blind manufacturer and avoids delays in the delivery cycle. By optimizing the structure of the correction mechanism, it can be avoided that the twisting head will not be on the rib end face of the coil tube during the insertion process without the need for manual assistance, and it can be ensured that the coil tube can be smoothly inserted by the twisting head, automatically extending the top block, and smoothly driving the coil tube to twist, which is convenient for realizing automatic control and improving correction efficiency. Therefore, the present invention has the advantage of being able to correct the torsion of the coil tube, which can reduce the loss of the roller blind manufacturer and avoid delays in the delivery cycle, and also has the advantage of high correction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top view of the correction mechanism in Example 2.

[0018] Figure 2 It is the left view of the loading mechanism.

[0019] Figure 3 It is the front view of the feeding mechanism.

[0020] Figure 4 It is a top view of the torsion mechanism.

[0021] Figure 5 yes Figure 4 Schematic cross-section at AA.

[0022] Figure 6 yes Figure 4 Schematic cross section at BB.

[0023] Figure 7 This is a schematic diagram of the top block extending out of the sleeve.

[0024] Figure 8 It is a front view of the sleeve.

[0025] Figure 9 It is a three-dimensional diagram of the sleeve.

[0026] Figure 10 It is a cross-sectional view of the coiled tube.

[0027] Figure 11 This is a workflow diagram of Example 2.

[0028] The symbols in the accompanying drawings are: 1-coil tube, 100-slot, 101-rib;

[0029] 2-feeding mechanism, 200-feeding frame, 201-slide plate, 202-rotating shaft, 203-first motor, 204-feeding wheel, 205-feeding trough, 206-side plate;

[0030] 3-torsion mechanism, 300-base plate, 301-movable frame, 302-driving shaft, 303-driving shaft, 304-conical surface, 305-sleeve, 306-flange, 307-spring, 308-baffle, 309-top block, 310-through slot, 311-second motor, 312-worm, 313-worm gear, 314-cylinder, 315-slide rail, 316-slider, 317-groove, 318-elastic cable, 319-slide groove, 320-slide bar. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0032] Example 1. A method for calibrating a roller blind tube, comprising the following steps:

[0033] a. Straighten the coiled tube 1 and get grade A.

[0034] b. Fix one end of product A and rotate the other end of product A so that the slot 100 on product A remains parallel to the axis of product A, or drive both ends of product A to rotate in opposite directions at the same time so that the slot 100 on product A remains parallel to the axis of product A.

[0035] The step b is to first use a projection device to form a projection line on product A that is parallel to the axis of product A, and then rotate the other end of product A to keep the card slot 100 parallel to the projection line.

[0036] The correction mechanism for implementing the correction method includes a frame and two plugs, one of which is fixed to the frame and the other is provided with a rotating wheel. The frame is provided with a straight line laser marking instrument.

[0037] When in use, put one end of the reel onto the plug of the rack, insert the other plug into the other end of the reel, and project the line emitted by the laser marking instrument onto the reel. Manually twist the wheel to make the slot parallel to the projection line.

[0038] The characteristic of embodiment 1 is that the correction mechanism has a simple structure but low efficiency. It can be used for correction of small batches of coiled pipes to avoid exceeding the delivery cycle, but it is not suitable for correction of large batches.

[0039] Example 2. A method for calibrating a roller blind tube, comprising the following steps:

[0040] a. Straighten the coiled tube 1 and get grade A.

[0041] b. Fix one end of product A and rotate the other end of product A so that the slot 100 on product A remains parallel to the axis of product A, or drive both ends of product A to rotate in opposite directions at the same time so that the slot 100 on product A remains parallel to the axis of product A.

[0042] The correction mechanism for realizing the above correction method is as follows: Figure 1 As shown, it includes a feeding mechanism 2, and the discharge end of the feeding mechanism 2 is provided with two symmetrically distributed torsion mechanisms 3; the torsion mechanism 3 includes a base plate 300, a slidingly connected movable frame 301 is provided on the base plate 300, a telescopic driving mechanism is provided on the movable frame 301, a torsion head is provided on the movable frame 301, and a torsion driving mechanism is provided on the torsion head.

[0043] like Figure 2 and Figure 3 As shown, the feeding mechanism 2 includes a feeding frame 200, and the top of the feeding frame 200 is provided with an inclined slide 201. Optimally, the slide 201 is provided with two side panels, and the distance between the two side panels 206 matches the length of the coil 1. The side panels 206 are used to guide the coil 1 when it slides down. The side panels 206 are screwed to the slide 201 so that the distance between the two side panels 206 is adjustable to accommodate coils 1 of different lengths. One side of the lower end of the slide 201 is provided with a rotating shaft 202 connected to the feeding frame 200, and the feeding frame 200 is provided with a first motor 203 connected to the rotating shaft 202, and the rotating shaft 202 is provided with two feeding wheels 204. The outer peripheral surface of the feeding wheel 204 is provided with a plurality of feeding troughs 205 that all match the coil 1.

[0044] like Figures 4 to 9 As shown, the torsion head includes a driving shaft 302 with one end passing through the movable frame 301, and the driving shaft 302 is connected to the movable frame 301 with a bearing. The other end of the driving shaft 302 is provided with a driving shaft 303, and the conical surface 304 between the driving shaft 302 and the driving shaft 303 is connected. A cylindrical sleeve 305 is provided on the outside of the driving shaft 303, and one end of the sleeve 305 extends to the outside of the driving shaft 302 and radially outward to form a flange edge 306, a spring 307 is provided between the flange edge 306 and the movable frame 301, and the other end of the sleeve 305 is provided with a baffle 308 fixed to the driving shaft 303. The driving shaft 302 and the driving shaft 303 are respectively maintained in sliding connection with the two ends of the sleeve 305, and a through hole is provided on the outer circumferential surface of the sleeve 305, a top block 309 is provided in the through hole, and a rebound mechanism is provided between the top block 309 and the sleeve 305.

[0045] The rebound mechanism includes a through groove 310 located on the outer end surface of the top block 309 and two grooves 317 located on the outer peripheral surface of the sleeve 305. The bottom surface of the through groove 310 is an arc surface. One end of the groove 317 is connected to the through hole. The two grooves 317 are respectively located at the two ends of the through groove 310. An elastic rope 318 is provided in the through groove 310. The two ends of the elastic rope 318 are respectively fixed on the bottom surfaces of the two grooves 317. The material of the elastic rope 318 is rubber.

[0046] The torsion drive mechanism includes a second motor 311 fixed to the mobile frame 301. A worm 312 is provided at the output end of the second motor 311. A worm gear 313 is provided on one side of the worm 312, which is connected to the main drive shaft 302. When the second motor 311 is activated, the worm 312 rotates. The worm 312, through the worm gear 313, rotates the main drive shaft 302. The main drive shaft 302 rotates the small drive shaft 303, which in turn rotates the top block 309.

[0047] The telescopic drive mechanism includes a cylinder 314 fixed to the base plate 300, with the output end of the cylinder 314 connected to the mobile frame 301. The base plate 300 is screwed to the loading frame 200, making the position of the base plate 300 on the frame 200 adjustable, that is, the distance between the two twisting heads can be adjusted, suitable for calibrating coiled pipes of different lengths.

[0048] A slide rail 315 is provided on the bottom plate 300 , and a slider 316 fixed to the movable frame 301 is provided on the slide rail 315 .

[0049] The outer circumferences of the main drive shaft 302 and the small drive shaft 303 are each provided with a slide groove 319. Slide bars 320 are provided at both ends of the inner hole of the sleeve 305 to engage with the corresponding slide grooves 319. The engagement of the slide bars 320 and the slide grooves 319 allows the sleeve 305 to move axially along the main drive shaft 302 and the small drive shaft 303, but prevents relative rotation.

[0050] The ejection blocks 309 on the two twisting heads are respectively located on both sides of the axis of the driving shaft 302, that is, the ejection directions of the two ejection blocks 309 are opposite. For example, when one ejection block 309 is ejected, it is toward the feeding mechanism 2, and when the other ejection block 309 is ejected, it is away from the feeding mechanism 2.

[0051] It also includes a control system, which includes a controller. The first motor 203 and the second motor 311 are both connected to the controller. The first motor 203 and the second motor 311 are both stepper motors. The cylinder 314 is connected to the controller through a solenoid valve. The cylinder 314 is connected to the air compressor through a solenoid valve.

[0052] Instructions for use: Place multiple reels 1 on the slide 201. It is necessary to ensure that the twisting directions of the multiple reels 1 are in the same direction. You can first place the reel 1 on the projection line and align the slot 100 with the head shadow line to know the twisting direction of the reel 1. If the twist of the reel 1 is large, it can be seen with the naked eye without the help of the projection line. After the placement of multiple reels 1, the controller rotates the first motor 203 to a certain angle. The first motor 203 drives the feed wheel 204 to rotate a certain angle through the rotating shaft 202. With each rotation, a reel 1 enters the feed wheel 204 and enters the corresponding feed slot 205. The corresponding reel 1 originally on the feed wheel 204 will fall off.

[0053] The controller extends the cylinder 314 through the solenoid valve, and the cylinder 314 pushes the movable frame 301 to move toward the coiled tube 1, so that the twisting head is inserted into the end of the coiled tube 1 located on the feeding wheel 204. When the flange 306 contacts the coiled tube 1, the sleeve 305 is blocked by the coiled tube 1 and cannot continue to move, and the driving shaft 302 continues to move. When the driving shaft 302 passes through the top block 309, the top block 309 overcomes the elastic force of the elastic rope 318 and extends out of the sleeve. After the top block 309, it is either fixed on the inner wall of the rib 101 (the angle of the rib 101 compared to the axis of the coiled tube 1 is generally 20-30°), or close to the inner wall of the coiled tube 1, but not stuck. However, due to the different ejection directions of the two top blocks 309, at most only one top block 309 is pressed against the inner wall of the rib 101.

[0054] The controller records the status of the two second motors 311, records their initial angles, and sets them as zero angles. The controller causes one of the second motors 311 to rotate 180° forward and then 180° counterclockwise. When the top block 309 is pressed against the inner wall of the coiling tube 1, this will not have any effect. However, when one of the top blocks 309 is pressed against the inner wall of the rib 101, this will cause the top block 309 pressed against the rib 101 to slide out from the rib 101 and continue to extend outward and approach the inner wall of the coiling tube 1 under the action of the corresponding cylinder 314. The purpose of this step is to ensure that neither of the two top blocks 309 is fixed on the rib 101.

[0055] Because the torsion of the coiled tube 1 is a batch problem, the torsion angles on multiple coiled tubes 1 are the same. According to the torsion direction of the coiled tube 1, the controller causes the two second motors 311 to rotate in opposite directions, that is, the driving rotation directions of the two second motors 311 are opposite. When the two top blocks 309 are respectively located on both sides of the rib 101, the resistance to the continued rotation of the second motor 311 increases, and the current increases significantly. After the controller detects the increase in current, it defaults to this time as the starting angle of the torsion. Then, according to the torsion of the coiled tube 1, the torsion is set in the controller, and the two second motors 311 continue to rotate a certain angle, so that the coiled tube 1 is twisted back to the normal state, and the slot 100 is parallel to the axis of the coiled tube 1.

[0056] The controller contracts the cylinder 314, returns the two second motors 311 to their initial angles, and rotates the first motor 203 to a certain angle, so that the calibrated roll tube 1 can be discharged from the feeding wheel 204 and a new roll tube 1 can be fed into the feeder to continue calibrating the next roll tube 1.

[0057] The implementation of the above electronic control part should be easy for those skilled in the art to implement according to the above action process, and is a conventional technical means, so it will not be described in detail in the present invention.

[0058] The technical difficulties overcome in the development of Example 2 include the following:

[0059] 1) How to achieve continuous feeding and deliver the coiled tube 1 that needs to be corrected to the correct position so that it can be accurately inserted by the twisting head and the correction operation can be carried out reliably? The above problem is solved by optimizing the structure of the feeding mechanism 2. The feeding wheel 204 is used for feeding and the feeding groove 205 on the feeding wheel 204 is used for positioning.

[0060] 2) How to ensure that the twisting head can be inserted into the reel to twist the reel while preventing it from being blocked by the ribs 101 on the reel 1 and thus unable to be inserted into the reel 1? The above solution is achieved by optimizing the structure of the twisting head. The top block 309 that drives the reel 1 to twist is hidden in the shaft sleeve 305 to avoid interference. Only when the twisting head is inserted into the reel does the top block 309 extend. Once extended, the top block 309 can drive the reel 1 to twist.

[0061] 3) While solving the problem in the second step, a new problem arises: the ejection block 309 may hit the rib 101, preventing it from being positioned to one side of the rib 101 and causing the coiled tube 1 to twist. The ejection directions of the two ejection blocks 309 are set in opposite directions, so that at most only one ejection block 309 will hit the rib 101. By driving one of the second motors 311 to rotate 180°, causing the ejection block 309 fixed on the rib 101 to slide off the rib 101, and then returning the second motor 311 to its zero angle, both ejection blocks 309 can be prevented from hitting the rib 101.

[0062] 4) After the coiled tube enters the feeding wheel 204, due to the unclear angular position of the slot 100, after the coiled tube is inserted by the twisting head, the top block 309 cannot be exactly located on both sides of the rib 101. The top block 309 needs to idle for a certain angle before it can contact the rib 101 and twist the coiled tube. It is difficult to determine the rotation angle that the top block 309 needs to pass when driving the coiled tube 1 to twist at the appropriate angle, that is, it is difficult to determine the number of revolutions required for the second motor 311 to drive the coiling and twisting, which makes it difficult to control and accurately correct the coiled tube. The present invention first drives the two second motors 311 to drive the two top blocks 309 to rotate to both sides of the rib 101 respectively. At this time, the current required for the second motor 311 to continue rotating increases significantly. The controller knows that the coiled tube begins to twist when the second motor 311 continues to rotate. The coiled tube can be accurately corrected by rotating the second motor 311 at a certain angle according to the twist of the coiled tube. This has the advantage of high correction accuracy.

Claims

1. A method for calibrating a roller blind tube, characterized in that: The following steps are included: a. Straighten the coiled tube (1) to obtain Grade A. b. Fix one end of product A and rotate the other end of product A so that the slot (100) on product A remains parallel to the axis of product A, or drive both ends of product A to rotate in opposite directions at the same time so that the slot (100) on product A remains parallel to the axis of product A; A correction mechanism for implementing a rolling shutter tube correction method comprises a feeding mechanism (2), wherein the discharge end of the feeding mechanism (2) is provided with two symmetrically distributed twisting mechanisms (3); the twisting mechanism (3) comprises a bottom plate (300), a slidingly connected moving frame (301) is provided on the bottom plate (300), a telescopic driving mechanism is provided on the moving frame (301), a twisting head is provided on the twisting head, and a twisting driving mechanism is provided; The twisting head comprises a driving shaft (302) having one end passing through the moving frame (301), a driving shaft (303) being provided at the other end of the driving shaft (302), a conical surface (304) being connected between the driving shaft (302) and the driving shaft (303), a cylindrical sleeve (305) being provided on the outside of the driving shaft (303), one end of the sleeve (305) extending to the outside of the driving shaft (302) and radially outwardly forming a flange (306), A spring (307) is provided between the flange edge (306) and the movable frame (301); a baffle (308) fixed to the driving small shaft (303) is provided at the other end of the shaft sleeve (305); the driving large shaft (302) and the driving small shaft (303) are respectively maintained in sliding connection with the two ends of the shaft sleeve (305); a through hole is provided on the outer peripheral surface of the shaft sleeve (305); a top block (309) is provided in the through hole; and a rebound mechanism is provided between the top block (309) and the shaft sleeve (305); The ejection directions of the two ejector blocks (309) are opposite; The rebound mechanism comprises a through groove (310) located on the outer end surface of the top block (309) and two grooves (317) located on the outer peripheral surface of the shaft sleeve (305), one end of the groove (317) is connected to the through hole, and the two grooves (317) are respectively located at the two ends of the through groove (310), and an elastic rope (318) is provided in the through groove (310), and the two ends of the elastic rope (318) are respectively fixed to the bottom surfaces of the two grooves (317).

2. The roller blind tube calibration method according to claim 1, characterized in that: The step b is to first use a projection device to form a projection line on product A that is parallel to the axis of product A, and then rotate the other end of product A so that the card slot (100) remains parallel to the projection line.

3. The roller blind tube calibration method according to claim 1, characterized in that: The feeding mechanism (2) comprises a feeding frame (200), an inclined slide (201) is provided on the top of the feeding frame (200), a rotating shaft (202) connected to the feeding frame (200) is provided on one side of the lower end of the slide (201), a first motor (203) connected to the rotating shaft (202) is provided on the feeding frame (200), at least two feeding wheels (204) are provided on the rotating shaft (202), and a plurality of feeding grooves (205) are provided on the outer peripheral surface of the feeding wheel (204), each of which cooperates with the winding tube (1).

4. The roller blind tube calibration method according to claim 1, characterized in that: The torsion drive mechanism comprises a second motor (311) fixed to the mobile frame (301), a worm (312) being provided at the output end of the second motor (311), and a worm wheel (313) connected to the driving shaft (302) being provided on one side of the worm (312).

5. The rolling shutter tube calibration method according to claim 1, characterized in that: The telescopic driving mechanism comprises a cylinder (314) fixed to the base plate (300), and an output end of the cylinder (314) is connected to the movable frame (301).

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