Tooth profile full-inspection method for multi-cutter punching teeth of metal card clothing

Abstract

The invention relates to the field of textile equipment, and discloses a metal card clothing multi-cutter punching tooth profile full-inspection method, which comprises the following steps: a steel belt passes through the lower part of a cutter head from a lower die holder, a punching cutter on the cutter head performs rotary cutting processing on the steel belt, and when the total length of a tooth profile formed by rotary cutting of the cutter head by a circle exceeds the width of a camera, the camera is started; according to a formula: # imgabs0 #, the number of sampling times required for obtaining all tooth profiles is calculated: the rack passes through the optical fiber sensor and then passes through the camera, when the rack passes through the optical fiber sensor, due to the fact that teeth can discontinuously shield optical fibers in the moving process of the rack, counting signals are generated and transmitted to the controller, meanwhile, the camera photographs and samples the rack, and the number of sampling times required for obtaining all tooth profiles is calculated; a tooth-shaped picture obtained through photographing and sampling is transmitted to the controller; sequentially splicing the tooth profile pictures obtained by sampling to present all tooth profiles generated by multi-cutter punching; and a motor on the outer side of the camera is used for winding the rack subjected to tooth punching on a charging tray. All tooth shapes generated by multi-cutter punching are effectively presented, the tooth shapes are not missed, and the card clothing can be completely detected.

Description

Technical Field

[0001] The invention relates to the field of textile equipment, in particular to a method for fully inspecting the tooth profile of a metal card clothing with multiple punches. Background Art

[0002] When punching teeth with multiple knives (≥6 knives), if one knife has a problem, or the rotation speed and traction speed do not match or the defects caused by inconsistent installation of multiple knives will occur. Figure 6 , Figure 7 and Figure 8 The defective teeth such as high and low teeth or fat and thin teeth shown in the figure have random tooth shapes obtained by timed sampling due to the limitation of the camera's field of view (for example, the length of 6 teeth exceeds the width of the camera's field of view).

[0003] The probability of sampling defective teeth of ≤16.7% (6 teeth produced by 6 punching knives, 1 of which is defective) is low, and the occurrence of defective teeth once may be ignored, and sampling defective teeth for multiple consecutive times is a low probability event. Therefore, missed inspection will produce a large number of defective products.

[0004] In the document CN201520149787, a direct tooth profile center angle deviation inspection device is disclosed, including a base, a bracket fixedly mounted on the side of the base, a linear rolling guide pair fixed on the bracket, and a positioning top mounted on the linear rolling guide pair. It also includes a handwheel lifting and rotating device fixed to the upper end of the bracket, a positioning turntable mounted on the upper part of the base, the positioning turntable has a table rod positioning hole, and the measuring table is installed in the table rod positioning hole. The lower part of the base has a positioning screw mounting hole, and the positioning screw is installed in the positioning screw mounting hole. This detection method will cause omissions in the inspection of the tooth profile during the inspection.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0006] In order to solve the above problems, the present invention discloses a method for fully inspecting the tooth profile of metal card clothing by multi-knife punching, which can timely and effectively present all tooth profiles produced by multi-knife punching without missing any tooth profile, and can fully inspect the card clothing.

[0007] The technical solution of the present invention is: a method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives, comprising the following steps:

[0008] Step 1: The rolled steel strip is released in a straight line. The steel strip passes under the cutter disc from the lower die seat. The punch on the cutter disc performs rotary cutting on the steel strip. The rack is wound at a constant speed by the motor outside the camera.

[0009] Step 2: When the total length of the tooth shape formed by the knife disc rotating one circle exceeds the camera width, the controller uses the formula: Calculate and obtain all tooth profiles, that is, the number of times the cutter head rotates one circle and needs to be sampled;

[0010] Step 3: The rack passes through the optical fiber sensor first, and then passes through the camera. When the rack passes through the optical fiber sensor, the teeth of the rack will intermittently block the optical fiber during the movement, generating a counting signal and transmitting it to the controller. The counting trigger rule is as follows: The counting trigger rule of 2 samplings:

[0011] The second sampling count trigger value; (3)

[0012] When the count reaches the common multiple of the displayed number of teeth and number of cutters, the count is reset to zero. (4)

[0013] The counting triggering rule of 3 samplings is:

[0014] Second sampling count trigger value: (5)

[0015] The third sampling count trigger value; (6)

[0016] When the count reaches the common multiple of the displayed number of teeth and number of cutters, the count is reset to zero. (7)

[0017] Count triggering rules for 4 samplings:

[0018] The second sampling count trigger value; (8)

[0019] The third sampling count trigger value; (9)

[0020] The 4th sampling count trigger value; (10)

[0021] When the count reaches a multiple of the displayed number of teeth and blades, the count is reset to zero. (11)

[0022] Control the camera to take photos and samples of the rack;

[0023] Step 4: At the same time, the camera takes pictures of the rack running through it, and the tooth shape pictures obtained by taking pictures and sampling are transmitted to the controller;

[0024] Step 5: The sampled tooth profile images are spliced ​​in sequence to present all the tooth profiles produced by multi-knife punching, without missing any tooth profile, thus achieving a complete inspection of the card clothing.

[0025] By adopting the above technical solution, the card clothing rack passes through the camera and the optical fiber sensor. Through the cooperation between the camera and the optical fiber sensor, the tooth height and tooth pitch of the card clothing rack completed by the punching tooth can be measured to determine whether there is a problem with the rack. If there is a problem with the rack, an alarm will be issued.

[0026] Preferably, the cutter disc in step 1 rotates one circle to form the same number of card clothing teeth as the number of punching knives on the steel belt.

[0027] Preferably, the CEIL() function in step 2 is a remainder-increment function; C1 is the number of samples required to splice the complete number of teeth; W is the field of view length of the camera; C is the tooth pitch; N is the number of knives; and n is the tooth count value.

[0028] Preferably, the gear punching machine includes a lower die seat and a punch box. The lower die seat is provided with a rack. A cutter disc is provided at the bottom of the punch box. The cutter disc is driven to rotate by a motor in the punch box. The cutter disc and the lower die seat are adapted to each other.

[0029] By adopting the above technical solution, the cutter disc on the punch box is adapted to the lower die seat, and the cutter disc is rotated by the motor in the punch box, so that the passing rack can be punched to form a toothed card clothing rack.

[0030] Preferably, multiple punching knives are installed on the cutter disc. Every time the punching knives rotate one circle, the pulling machine pulls the rack to move multiple tooth pitches. The rotation speed of the cutter disc and the running speed of the rack maintain a corresponding ratio. The rack located below the cutter disc always maintains uniform linear motion, and the cutter disc keeps rotating at a uniform speed.

[0031] By adopting the above technical solution, the punching knife on the cutter disc rotates around the center of the circle driven by the motor, so that the rack moving forward at a uniform speed punches the teeth, which can ensure that the tooth profile spacing on the rack is uniform.

[0032] Preferably, a plurality of punches are evenly distributed on the cutter disc with the center of the cutter disc as the center of the circle, and punches are arranged inside the punches, and the punches are used to punch teeth on the rack.

[0033] By adopting the above technical solution, a plurality of punches are grouped together to punch teeth on the rack to produce a card clothing rack.

[0034] Preferably, the rack is located below the cutter disc and in front of the camera and is in a straight line.

[0035] By adopting the above technical solution, the card clothing rack moves in a straight line between the camera and the optical fiber sensor, and is captured by the camera and the optical fiber sensor, so as to make a judgment on it.

[0036] Preferably, the camera is located on one side of the optical fiber sensor, that is, on the side of the advancing direction of the rack, and the camera and the optical fiber sensor are perpendicular to the rack in space.

[0037] By adopting the above technical solution, the optical fiber sensor and the camera cooperate with each other to grasp the rack.

[0038] Preferably, the camera is a low frame rate area array camera, and the length of the camera shooting area is less than the length of the number of teeth generated by one revolution of the cutter disc.

[0039] Advantages of the present invention: 1. The present invention can detect the needle cloth through the cooperation between the optical fiber sensor and the camera. The optical fiber sensor is used to sense the number of teeth of the needle cloth to count them, and the camera takes pictures of them for detection.

[0040] 2. After the camera takes a picture of the rack, the present invention can use the optical fiber sensor to count the number of teeth on the rack. When the count reaches the common multiple of the number of teeth and the number of knives, the number of teeth on the rack is completely photographed, and then the next round of counting is performed. This can avoid the problem of defective teeth being ignored during sampling.

[0041] 3. The present invention can timely and effectively present all tooth shapes produced by multi-knife punching without missing any tooth shapes, and can perform complete detection of the card clothing. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the structure of the punching teeth of the present invention;

[0043] Figure 2 For the present invention Figure 1 The structural diagram of part A;

[0044] Figure 3 For the present invention Figure 1 The structural diagram of the middle A direction;

[0045] Figure 4-5 A schematic diagram of the detection of the present invention;

[0046] Figure 6 A schematic diagram of the high and low teeth of the defective tooth of the present invention;

[0047] Figure 7 A schematic diagram of a fat or thin tooth of a defective tooth according to the present invention;

[0048] Figure 8 It is a schematic diagram of the direct defect of the defective tooth of the present invention.

[0049] Among them: 1. lower die base, 2. punch box, 2-1. cutter disc, 2-2. punch, 2-3. punch, 3. rack, 4. camera, 5. fiber optic sensor, 6. needle clothing. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0051] like Figure 1-5 As shown, a method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives comprises the following steps:

[0052] Step 1: The rolled steel strip is released in a straight line, and the steel strip passes under the cutter disc 2-1 from the lower die seat 1. The punch 2-3 on the cutter disc 2-1 performs rotary cutting on the steel strip, and the rack 3 is wound at a constant speed by the motor outside the camera;

[0053] Step 2: When the total length of the tooth shape formed by the blade 2-1 during one rotation exceeds the width of the camera 4, the controller uses the formula: Calculate the number of samples required to obtain all tooth shapes, that is, the number of samples required for the cutter head 2-1 to rotate one circle;

[0054] Step 3: The rack 3 first passes through the optical fiber sensor 5, and then passes through the camera 4. When the rack 3 passes through the optical fiber sensor 5, the teeth of the rack 3 will intermittently block the optical fiber during the movement, generating a counting signal and transmitting it to the controller. The counting triggering rule is as follows: The counting triggering rule of 2 samplings:

[0055] The second sampling count trigger value; (3)

[0056] When the count reaches the common multiple of the displayed number of teeth and number of cutters, the count is reset to zero. (4)

[0057] The counting triggering rule of 3 samplings is:

[0058] The second sampling count trigger value; (5)

[0059] The third sampling count trigger value; (6)

[0060] When the count reaches the common multiple of the displayed number of teeth and number of cutters, the count is reset to zero (7)

[0061] Count triggering rules for 4 samplings:

[0062] The second sampling count trigger value; (8)

[0063] The third sampling count trigger value; (9)

[0064] The 4th sampling count trigger value; (10)

[0065] When the count reaches the common multiple of the displayed number of teeth and number of cutters, the count is reset to zero. (11)

[0066] Control the camera to take photos and samples of the rack;

[0067] Step 4: At the same time, the camera 4 takes pictures of the rack 3 passing through, and the tooth profile pictures obtained by taking pictures and sampling are transmitted to the controller;

[0068] Step 5: The sampled tooth profile images are spliced ​​in sequence to present all the tooth profiles produced by multi-knife punching, without missing any tooth profile, thus achieving a complete inspection of the card clothing.

[0069] The cutter disc 2-1 in step 1 rotates one circle, and forms the same number of tooth shapes of card clothing as that of the punching cutters 2-3 on the steel belt.

[0070] The CEIL() function in step 2 is a remainder-increment function; C1 is the number of samples required to stitch the complete number of teeth; W is the camera's field of view; C is the tooth pitch; N is the number of knives; and n is the tooth count value.

[0071] The gear punching machine includes a lower die base 1 and a punch box 2. The lower die base 1 is passed through a rack 3. A cutter disc 2-1 is provided at the bottom of the punch box 2. The cutter disc 2-1 is rotated by a motor in the punch box 2. The cutter disc 2-1 and the lower die base 1 are adapted to each other. The cutter disc 2-1 on the punch box 2 is adapted to the lower die base 1. The cutter disc 2-1 is rotated by the motor in the punch box 2, and the rack 3 passing through can be punched, thereby forming a toothed card clothing rack 3.

[0072] A plurality of punching knives 2-3 are installed on the cutter disc 2-1. Every time the punching knives 2-3 rotate one circle, the pulling machine pulls the rack to move multiple (corresponding to the number of punching knives) tooth pitches. The rotation speed of the cutter disc 2-1 and the running speed of the rack 3 maintain a corresponding ratio. The position of the rack 3 below the cutter disc 2-1 always maintains uniform linear motion. The cutter disc 2-1 keeps rotating at a uniform speed. The punching knives 2-3 on the cutter disc 2-1 rotate around the center of the circle driven by the motor, so that the rack 3 moving forward at a uniform speed punches teeth, which can ensure that the tooth spacing on the rack 3 is uniform.

[0073] A plurality of punches 2-2 are evenly distributed on the cutter disc 2-1 with the center of the cutter disc 2-1 as the center of the circle. A punch 2-3 is arranged inside the punch 2-2. The punch 2-3 is used to punch teeth on the rack 3. A plurality of punches 2-2 form a group to punch teeth on the rack 3 to produce a card clothing rack.

[0074] The rack 3 is located below the cutter disc 2-1 and in front of the camera 4 and is in a straight line. The card clothing rack 3 moves in a straight line between the camera 4 and the optical fiber sensor 5 and is captured by the camera 4 and the optical fiber sensor 5 for judgment.

[0075] The camera 4 is located on one side of the optical fiber sensor 5, that is, on the side of the forward direction of the rack 3. The camera 4 and the optical fiber sensor 5 are perpendicular to the rack 3 in space, so that the optical fiber sensor 5 and the camera 4 cooperate with each other to grasp the rack 3.

[0076] Camera 4 is a low frame rate area array camera, and the length of the shooting area of ​​camera 4 is less than the length of the number of teeth generated by one circle of the cutter head 2 - 1 .

[0077] The field of view width of camera 4 is 6.4mm, the tooth pitch is 1.5mm, and the length of the 6-tooth needle clothing is 10.5mm, which exceeds the field of view width of camera 4 of 6.4mm. Therefore, 2 fixed-point photography samplings are required to obtain the complete 6-tooth punching tooth shape.

[0078] Example 1

[0079] The length of 6-tooth card clothing is 10.5;

[0080] According to formula (1), two photo samplings are required;

[0081] When the count value = 1, the camera is triggered and the images of the first four teeth are acquired during the first sampling.

[0082] According to formula (3), when the count value = 5, the camera is triggered again, and the images of the last two teeth are obtained during the second sampling. The complete tooth shape produced by all 6 cutting knives can be obtained by splicing the two images.

[0083] According to formula (4), when the count value is 12, the count is reset and restarted. When the camera detects that there is a problem with the tooth shape, the punch on the cutter disc is checked.

[0084] Example 2

[0085] The length of 16-tooth card clothing is 25.5;

[0086] According to formula (1), four times of photo sampling are required, and the counting rules are implemented according to formulas (8)-(11).

[0087] When the count value = 1, the camera sampling is triggered, which is the first sampling, and the images of the first four teeth are obtained;

[0088] According to formula (8), when the count value = 5, the camera is triggered again, which is the second sampling, which is equivalent to obtaining the images of the 5th to 8th teeth;

[0089] According to formula (9), when the count value = 9, the camera is triggered again, which is the third sampling, which is equivalent to obtaining the images of the 9th to 12th teeth;

[0090] According to formula (10), when the count value = 13, the camera is triggered again, which is the fourth sampling, equivalent to obtaining the images of the 13th to 16th teeth;

[0091] The above four acquired images are stitched together to obtain the complete tooth shape produced by all 16 punching cuts;

[0092] According to formula (11), when the count value is 16, the count is reset and starts from the beginning. When the camera detects that there is a problem with the tooth shape, the punch on the cutter disc is checked.

[0093] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention, and the purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A method for fully inspecting the tooth shape of metal card clothing with multiple punches, characterized in that: The following steps are involved: Step 1: The rolled steel strip is released in a straight line. The steel strip passes under the cutter disc from the lower die seat. The punch on the cutter disc performs rotary cutting on the steel strip. The rack is wound at a constant speed by the motor outside the camera. Step 2: When the total length of the tooth shape formed by the knife disc rotating one circle exceeds the camera width, the controller uses the formula: Calculate the number of samples required to obtain all tooth shapes, that is, the number of samples required for one rotation of the cutter disc; Step 3: The rack passes through the optical fiber sensor first, and then passes through the camera. When the rack passes through the optical fiber sensor, the teeth of the rack will intermittently block the optical fiber during the movement, generating a counting signal and transmitting it to the controller. The counting trigger rule is as follows: The counting trigger rule of 2 samplings: The counting triggering rule of 3 samplings is: Count triggering rules for 4 samplings: Control the camera to take photos and samples of the rack; Step 4: At the same time, the camera takes pictures of the rack running through it, and the tooth shape pictures obtained by taking pictures and sampling are transmitted to the controller; Step 5: The sampled tooth profile images are spliced ​​in sequence to present all the tooth profiles produced by multi-knife punching, without missing any tooth profile, thus achieving a complete inspection of the card clothing.

2. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: The cutter disc in step 1 rotates one circle to form the same number of tooth shapes of card clothing as the number of punching knives on the steel belt.

3. A method for full inspection of the tooth profile of metal card clothing by multi-knife punching according to claim 1, characterized in that: The CEIL() function in step 2 is a remainder-increment function; C1 is the number of samples required to splice the complete number of teeth; W is the field of view length of the camera; C is the tooth pitch; N is the number of blades; and n is the tooth count value.

4. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: The gear punching machine includes a lower die seat and a punch box. The lower die seat is provided with a rack. A cutter disc is provided at the bottom of the punch box. The cutter disc is driven to rotate by a motor in the punch box. The cutter disc and the lower die seat are matched.

5. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: A plurality of punching knives are installed on the cutter disc. Every time the punching knives rotate one circle, the pulling machine pulls the rack to move multiple tooth pitches. The rotation speed of the cutter disc and the running speed of the rack maintain a corresponding ratio. The rack is located below the cutter disc and always maintains uniform linear motion, and the cutter disc keeps rotating at a uniform speed.

6. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: A plurality of punches are evenly distributed on the cutter disc with the center of the cutter disc as the center of the circle, and a punching knife is arranged inside the punch, and the punching knife is used for punching teeth on the rack.

7. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: The rack is located below the cutter disc and in front of the camera and is in a straight line.

8. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: The camera is located on one side of the optical fiber sensor, that is, on the side of the forward direction of the rack, and the camera and the optical fiber sensor are perpendicular to the rack in space.

9. A method for fully inspecting the tooth profile of a metal card clothing by punching teeth with multiple knives according to claim 1, characterized in that: The camera is a low frame rate area array camera, and the length of the camera shooting area is less than the length of the number of teeth generated by one revolution of the cutter disc.

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