Automatic film cutting device for sectional material laminating film

Abstract

The utility model relates to the technical field of film covering and cutting equipment, in particular to an automatic film cutting device for sectional material film covering, which comprises a conveying mechanism, the conveying mechanism is provided with a plurality of groups of rotating rollers for realizing sectional material displacement, and the conveying mechanism is sequentially provided with an uncovered area and a covered area along the advancing direction of sectional materials. The wrapping area is provided with a plurality of sets of cutting devices used for cutting film materials, the non-wrapping area is provided with a photoelectric detection switch used for detecting the ends of the sectional materials, and the device can achieve automatic completion of cutting work, is accurate in cutting position, neat in notch, high in efficiency and free of film material waste.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating and film cutting equipment, in particular to an automatic film cutting device for profile coating. Background Art

[0002] The coating machine is suitable for the production of PVC, decorative paint paper, and solid wood veneer on the surface of various profiles such as wood, aluminum-plastic profiles, etc., and can replace the traditional painting process. The coating machine uses various forming rollers to simulate the manual veneer action, attaches the surface decorative materials to the surface of the profile, and fixes the position of the roller point by point and in sequence along the profile surface contour to form the envelope of the profile contour. When the profile is coated, the film material is cut manually with a wallpaper knife, but manual cutting often results in uneven cuts. When the next profile is coated, the uneven cuts need to be reserved, resulting in waste of film material and low production efficiency.

[0003] The Chinese utility model patent with the authorization announcement number CN 219726347U discloses an automatic film cutting device for laminating, including a cutting blade, which is used to cut the laminating film; a lateral moving mechanism, on which the cutting blade is arranged, and through which the cutting blade is driven to move back and forth in the direction perpendicular to the movement of the plate; a synchronous following mechanism, on which the lateral moving mechanism is arranged, and when the cutting blade is cutting, the lateral moving mechanism is driven to move synchronously with the plate on the production line through the synchronous following mechanism; a photoelectric switch, which is arranged in front of the plate on the production line to detect the plate that has completed film cutting; an encoder, which is used to detect the rotation speed of the film feeding roller on the production line. The above disclosed scheme can realize the automatic cutting of the film material after the profile is coated, improve the product production speed, effectively improve the product cutting accuracy and product qualification rate, and reduce the labor intensity of the post personnel. However, in the above-mentioned public scheme, the cutting blade arranged on the horizontal moving mechanism needs to pass through the synchronous following mechanism to achieve reciprocating cutting. The cutting structure is relatively complicated, and the profile is always in motion during the cutting process of the cutting blade. Since the movement direction of the cutting blade is perpendicular to the movement direction of the film material, the film material incision is prone to bevel angles, resulting in unevenness, which will also cause a certain degree of waste of film material. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides an automatic film cutting device for profile coating.

[0005] Technical solution: To achieve the above-mentioned purpose, the utility model discloses an automatic film cutting device for profile coating, including a conveying mechanism, wherein the conveying mechanism is provided with a plurality of groups of rotating rollers for realizing profile displacement, the conveying mechanism is provided with an uncoated area and a coated area in sequence along the forward direction of the profile, the coated area is provided with a plurality of groups of cutting devices for cutting film materials, and the uncoated area is provided with a photoelectric detection switch for detecting the end of the profile.

[0006] Preferably, the number of the cutting devices is four groups, and the four groups of cutting devices are defined as cutting device a, cutting device b, cutting device c and cutting device d, wherein the cutting device a and cutting device b are respectively located on the left and right sides of the coated profile, and are used to cut off the film materials on the left and right sides thereof, and the cutting device c and cutting device d are respectively located on the upper and lower sides of the coated profile, and are used to cut off the film materials on the upper and lower sides thereof.

[0007] Preferably, the coating area is also provided with an encoder for calculating the length of the profile, and the distance between the encoder and the cutting device a is L d .

[0008] Preferably, the distance between the cutting device a and the cutting device b along the advancing direction of the profile is L ab The cutting device c and the cutting device d are installed symmetrically, and the distance between them and the cutting device b is L bc , define the material length of the profile as L, then L ab +L bc +L d ≤L.

[0009] Preferably, the cutting device is provided with a rotating blade shaft, a servo motor for driving the rotating blade shaft to rotate is provided at the end of the rotating blade shaft, and a detachable cutting blade is provided outside the rotating blade shaft along the axial direction.

[0010] Preferably, a fixed ring that rotates synchronously with the rotating blade shaft is provided between the rotating blade shaft and the servo motor, a sensing boss is provided on the side of the fixed ring away from the cutting blade, and a sensor for determining its position is provided on the opposite side of the sensing boss.

[0011] Preferably, the coating zone is provided with an acceleration zone after the cutting device for increasing the distance between two adjacent coated profiles.

[0012] The beneficial effects of the utility model are:

[0013] 1. When the photoelectric detection switch located in the unwrapped area recognizes the end of the profile, the encoder is reset and starts counting synchronously. When the encoder count length is equal to the length of the profile, the cutting device automatically completes the film cutting on the left and right sides and the upper and lower sides of the profile after receiving the signal. During the cutting process, there is only a relative displacement between the cutting blade and the film material in the forward direction, so the incision is neat, and the cutting accuracy and efficiency are high.

[0014] 2. The rotating knife shaft of the cutting device is driven by a servo motor, and the cutting blade rotates synchronously with the rotating knife shaft. When the cutting device receives the cutting signal, the servo motor drives the rotating knife shaft to rotate one circle. During the rotation process, when the rotating knife shaft rotates to 180°, the cutting blade cuts into the film material to complete the cutting. The cutting efficiency is high and there is no waste of film material. In addition, since the cutting device has a simple structure and occupies a small area, the later maintenance cost is low and the installation arrangement is more flexible.

[0015] 3. In order to ensure the accuracy and automation of the film cutting by the cutting blade, the cutting device is provided with a fixed ring that rotates synchronously with the rotating knife shaft. The fixed ring is provided with a sensing boss. Every time the cutting blade cuts, the sensor will detect the sensing boss and transmit the signal to the control unit to achieve precise control of the cutting process.

[0016] 4. After the coated profiles are cut by four sets of cutting devices, they are accelerated by the acceleration zone in the rear section, which can separate the two connected profiles for subsequent handling and packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A area;

[0019] Figure 3 This is the front view of the cutting device in the utility model.

[0020] In the figure, 1. conveying mechanism; 101. uncoated area; 102. coated area; 103. acceleration area; 104. rotating roller; 2. photoelectric detection switch; 3. profile; 4. film material; 5. coated profile; 6. encoder; 7. cutting device; 701. cutting device a; 702. cutting device b; 703. cutting device c; 704. cutting device d; 8. rotating knife shaft; 9. cutting blade; 10. sensor; 11. induction boss; 12. servo motor; 13. fixing ring. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 To Attachment Figure 3The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0022] In the following description, the “direction of advancement” can refer to the attached Figure 1 The X direction in .

[0023] A profile coating automatic film cutting device, such as Figure 1 — Figure 3 As shown, it includes a conveying mechanism 1, and the conveying mechanism 1 is provided with a plurality of rotating rollers 104 for realizing the displacement of the profile 3. The conveying mechanism 1 is usually an essential structural component in the coating machine, and the specific structure is not repeated in this embodiment. The conveying mechanism 1 is provided with an uncoated area 101 and a coated area 102 in sequence along the advancing direction of the profile 3. The profile 3 to be coated passes through the uncoated area 101 and the coated area 102 in sequence during the advancing process. The coating machine uses various forming pressing wheels in the coating area 102 to simulate the manual veneer action to attach the film material 4 to the surface of the profile 3. In this embodiment, the profile 3 is a long wooden strip with a length L of 1500 mm. The specific working principle of the coating machine belongs to the technical knowledge well known to those skilled in the art, and is not repeated here.

[0024] After the profile 3 is coated, a coated profile 5 is formed. In order to neatly cut off the film material 4 at the end of the coated profile 5, the coating area 102 is provided with a plurality of cutting devices 7 for cutting the film material 4. In this embodiment, the number of the cutting devices 7 is four, namely, a cutting device a701, a cutting device b702, a cutting device c703 and a cutting device d704, wherein the cutting device a701 and the cutting device b702 are respectively located on the left and right sides of the coated profile 5, for cutting off the film material 4 on the left and right sides thereof, and the cutting device c703 and the cutting device d704 are respectively located on the upper and lower sides of the coated profile 5, for cutting off the film material 4 on the upper and lower sides thereof. In this embodiment, since the installation position of the cutting device 7 is limited, the cutting device a701 and the cutting device b702 are staggeredly installed along the advancing direction of the profile 3, and the installation center distance between the two is L. ab =300mm, the cutting device c703 and the cutting device d704 are installed symmetrically, and the center distance between them and the cutting device b702 is L bc =300mm.

[0025] The cutting device 7 is provided with a rotating blade shaft 8, and a detachable cutting blade 9 is provided outside the rotating blade shaft 8 along the axial direction. The cutting blade 9 is usually fastened to the rotating blade shaft 8 by bolts. A servo motor 12 driving the rotating blade shaft 8 is installed at one end of the rotating blade shaft 8. When the cutting blade 9 cuts into the film material 4 during the process of rotating with the rotating blade shaft 8, the cutting can be cut. In order to ensure the accuracy and automation of the film cutting by the cutting blade, a fixed ring 13 rotating synchronously with the rotating blade shaft 8 is provided between the rotating blade shaft 8 and the servo motor 12. A sensing boss 11 is provided on the side of the fixed ring 13 away from the cutting blade 9. A sensor 10 for judging its position is provided on the opposite side of the sensing boss 11. The sensor 10 is usually a proximity switch, and can also be a photoelectric detection switch well known to those skilled in the art. During the rotation of the rotating blade shaft 8, when the cutting blade 9 cuts into the film material 4, this position is at the position where the sensor 10 senses the sensing boss 11, that is, when the sensor 10 has a sensing signal, the cutting blade 9 is in a normal cutting state.

[0026] In order to determine the accurate cutting position of the cutting device 7 and prevent the profile 3 from being damaged due to premature cutting or the film material 4 from being wasted due to delayed cutting, the unwrapped area 101 is equipped with a photoelectric detection switch 2 for detecting the end of the profile 3, and the coated area 102 is equipped with an encoder 6. The encoder 6 follows the movement of the profile 3 to perform synchronous counting to calculate the length data. When the photoelectric detection switch 2 detects the tail of the profile 3, the encoder 6 data is cleared and the calculation is restarted. When the value L calculated by the encoder 6 is 计 =1500mm, the control unit transmits a signal to the cutting device a701, and the cutting blade 9 of the cutting device a701 rotates 360° through the drive of the servo motor 12. When it rotates to 180°, the sensor 10 senses that it is in place, and the cutting blade 9 cuts into the film material 4 to complete the cutting of the film material 4 on this side. The control unit is an independent control system independent of the coating machine, and there is no cross-control with the control of the coating machine. In order to avoid deviations in the installation process and counting errors of the encoder 6, L will be added to the touch screen of the control unit. ab and L bc The correction values ​​are L ab1 and L bc1 , when the assembly accuracy and encoder 6 counting accuracy are met, L ab1 and L bc1 The value can also be 0. Therefore, when the calculated value L of encoder 6 计 =(L ab +L ab1 )+L, in this embodiment, L ab1 =0,L 计 =1800mm, the cutting blade 9 of the cutting device b702 is driven by the servo motor 12 to rotate 360°, and the cutting of the side film material 4 is completed when it rotates to 180°.计 =(L ab +L ab1 )+(L bc +L bc1 )+L, in this embodiment, L ab1 =0,L bc1 =0,L 计 =2100mm, the cutting blades 9 of the cutting device c703 and the cutting device d704 are respectively rotated 360° by the synchronous drive of the servo motor 12, and when they rotate to 180°, the upper and lower sides of the film material 4 are cut at the same time. Usually, in order to prevent interference, the encoder 6 and the cutting device a701 need to maintain a certain distance, and the distance between the two is L d In this embodiment, L d =300mm. In order to ensure that the four sets of cutting devices 7 can cut normally when the cutting signal is triggered, L ab +L bc +L d ≤L, in this embodiment, 300mm+300mm+300mm≤1500mm.

[0027] In another embodiment, when the installation space of the cutting devices 7 is sufficient and there is no interference between them, the position layout of the cutting devices 7 is more flexible. ab =0, that is, the cutting device a701 and the cutting device b702 are respectively located on the left and right sides of the coated profile 5 and are installed symmetrically, so that the cutting device a701 and the cutting device b702 can synchronously cut the film material 4 on the left and right sides of the coated profile 5.

[0028] The coating area 102 is provided with an acceleration area 103 after the cutting device 7 for increasing the distance between two adjacent coated profiles 5. The coated profile 5 that has been cut is accelerated by the acceleration area 103, so that the two coated profiles 5 connected front and back can be separated, which is convenient for transportation and packaging. At the same time, the acceleration area 103 is arranged after the cutting device 7, which can prevent the film material 4 from being pulled due to inconsistent front and rear speeds during the cutting process, thereby ensuring that the cross-section of the film material 4 is neat.

[0029] The working principle of the device is as follows: when the profile 3 is conveyed to the unwrapped area 101, the photoelectric detection switch 2 detects the tail of the profile 3, at which time the encoder 6 has cleared the calculated data and restarted the calculation. 计 =1500mm, the control unit transmits a signal to the cutting device a701, and the cutting blade 9 of the cutting device a701 rotates 360° to complete the cutting of the side film material 4; when the calculated value L of the encoder 6 计 =(L ab +L ab1 )+L, L ab1 =0,L计 = 1800mm, the cutting blade 9 of the cutting device b702 rotates 360° to complete the cutting of the corresponding side film material 4; when the calculated value L of the encoder 6 计 =(L ab +L ab1 )+(L bc +L bc1 )+L, L ab1 =0,L bc1 =0,L 计 =2100mm, the cutting blades 9 of the cutting device c703 and the cutting device d704 rotate 360° synchronously to complete the synchronous cutting of the upper and lower sides of the film material 4. When the detection signal of the photoelectric detection switch 2 is triggered again, the encoder 6 counts and recalculates the length, and the cycle works, ensuring that the cutting of the film material 4 is completed automatically, the cutting position is accurate, the incision is neat, and the efficiency is high.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A profile coating automatic film cutting device, comprising a conveying mechanism (1), wherein the conveying mechanism (1) is provided with a plurality of groups of rotating rollers (104) for achieving displacement of the profile (3), characterized in that: The conveying mechanism (1) is provided with an uncoated area (101) and a coated area (102) in sequence along the advancing direction of the profile (3); the coated area (102) is provided with a plurality of cutting devices (7) for cutting the film material (4); and the uncoated area (101) is provided with a photoelectric detection switch (2) for detecting the end of the profile (3).

2. The automatic film cutting device for profile coating according to claim 1 is characterized in that: The number of the cutting devices (7) is four groups, and the four groups of the cutting devices (7) are defined as a cutting device a (701), a cutting device b (702), a cutting device c (703) and a cutting device d (704), wherein the cutting device a (701) and the cutting device b (702) are respectively located on the left and right sides of the coated profile (5) for cutting off the film material (4) on the left and right sides thereof, and the cutting device c (703) and the cutting device d (704) are respectively located on the upper and lower sides of the coated profile (5) for cutting off the film material (4) on the upper and lower sides thereof.

3. The automatic film cutting device for profile coating according to claim 2 is characterized in that: The coating area (102) is also provided with an encoder (6) for calculating the length of the profile (3), and the distance between the encoder (6) and the cutting device a (701) is L. d .

4. The automatic film cutting device for profile coating according to claim 3 is characterized in that: The distance between the cutting device a (701) and the cutting device b (702) along the advancing direction of the profile (3) is L. ab The cutting device c (703) and the cutting device d (704) are installed symmetrically, and the distance between them and the cutting device b (702) is L bc , define the material length of the profile (3) as L, then L ab +L bc +L d ≤L.

5. The automatic film cutting device for profile coating according to claim 1 is characterized in that: The cutting device (7) is provided with a rotating blade shaft (8), the end of which is provided with a servo motor (12) for driving the rotating blade shaft (8) to rotate, and a detachable cutting blade (9) is provided outside the rotating blade shaft (8) along the axial direction.

6. The automatic film cutting device for profile coating according to claim 5 is characterized in that: A fixed ring (13) is provided between the rotating blade shaft (8) and the servo motor (12), and the fixed ring (13) rotates synchronously with the rotating blade shaft (8). A sensing boss (11) is provided on the side of the fixed ring (13) away from the cutting blade (9), and a sensor (10) for determining the position of the sensing boss (11) is provided on the side opposite to the sensing boss (11).

7. The automatic film cutting device for profile coating according to claim 1 is characterized in that: The coating zone (102) is provided with an acceleration zone (103) after the cutting device (7) for increasing the distance between two adjacent coated profiles (5).

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