All -round thickness real -time detection device for pet plastic steel belt processing

Abstract

The present application belongs to the technical field of plastic steel belt production detection, and particularly relates to a kind of all-around thickness real-time detection device for PET plastic steel belt processing, which comprises a detection cavity and two traction rollers, and the inner wall of the detection cavity is connected with a guide roller, the lower part of the guide roller is connected with a thickness detection plate in a sliding manner, a photosensitive sensing layer is arranged at the sliding connection position, and the photosensitive sensing layer is internally composed of a photosensitive sensing module based on the principle of grating ruler.The left side of the detection cavity is connected with a sliding block through an adjusting bolt, the sliding block is integrally formed with a connecting plate, and the two traction rollers are integrally formed at the front and rear ends of the connecting plate respectively.A reciprocating ring is sleeved in the middle of the traction roller.The present application realizes real-time thickness detection by cooperation of the thickness detection plate and the photosensitive sensing module, and the traction cylinder generates axial displacement through the reciprocating ring under the driving of the friction force of the PET plastic steel belt, so that the PET plastic steel belt reciprocates during the detection process, realizes all-around thickness detection, and simultaneously removes the burrs on the surface of the belt, significantly improves the detection precision and product quality.

Description

Technical Field

[0001] This invention belongs to the field of PET plastic steel strip production and testing technology, specifically relating to an all-round real-time thickness detection device for PET plastic steel strip processing. Background Technology

[0002] PET strapping (also known as PET packing straps) is a new type of environmentally friendly strapping material made primarily from polyethylene terephthalate through extrusion and unidirectional stretching. It boasts advantages such as high strength, corrosion resistance, and aging resistance, and is widely used in packaging and strapping for industries including steel, aluminum, chemical fibers, cotton textiles, tobacco, wood, ceramics, and metal products. During the production of PET strapping, thickness uniformity is one of the core indicators of product quality. Excessive thickness deviation can lead to uneven tension and localized stress concentration in the strapping, potentially causing sudden breakage during packing and posing a safety hazard.

[0003] Currently, thickness measurement in PET plastic steel tape production mainly relies on manual sampling or offline testing, which suffers from drawbacks such as detection lag, low efficiency, and lack of real-time feedback. To address these issues, some thickness measuring devices for PET roll production exist in the prior art. For example, patent publication number CN211012767U discloses a thickness measuring device for PET roll production, which achieves rapid fixation of the device through the cooperation of a first limiting plate on the mounting base, a mounting slide groove, and a fixing component, and measures thickness through the scale markings on the surface of the first adjusting rod. However, this device still uses a contact-type scale reading method, making its detection accuracy significantly affected by human reading errors, and it can only perform fixed-point measurements when the production line is stopped, failing to achieve continuous online detection.

[0004] During the production of PET plastic strapping, burrs are easily generated on the surface of the strapping material due to the extrusion and stretching process. Patent CN215550292U discloses a high-performance cleaning device for PET plastic strapping production, which uses an electronic telescopic rod to drive brushes on the inner side of a mounting plate to clean the strapping surface. However, the brushes in this device make contact with the strapping at a fixed angle, limiting the cleaning range and making it impossible to perform comprehensive thickness measurement of the strapping material while cleaning. This results in limited equipment functionality and a large floor space required for the production line.

[0005] Furthermore, the inclined annular track, in conjunction with the rolling elements, can convert rotational motion into axial displacement, which is a fundamental principle in mechanical transmission. This mechanism is widely used in existing technologies. For example, patent CN202431867U discloses a ball-bearing reciprocating motion mechanism that converts rotational motion into linear reciprocating motion through the engagement of an inclined grooved track and rolling balls. Therefore, how to achieve high-precision, all-round real-time thickness detection through the cooperation of a circular track and rolling elements in the continuous production process of PET plastic steel strip, and simultaneously complete the deburring treatment of the strip surface, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to provide an all-around real-time thickness detection device for PET plastic steel strip processing, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a real-time omnidirectional thickness detection device for PET plastic steel strip processing, comprising a detection chamber and two traction rollers. A guide roller is axially connected to the inner wall of the detection chamber. A thickness detection plate is disposed below the guide rollers. The thickness detection plate is slidably connected to the inner wall of the detection chamber, and a photosensitive layer is disposed at the sliding connection point. A spring is disposed between the photosensitive layer and the bottom of the inner wall of the detection chamber. A photosensitive module is disposed inside the photosensitive layer. Adjusting bolts are connected vertically to the left side of the detection chamber. A slider is provided in the middle, and the slider is slidably connected to the left side of the detection chamber. A connecting plate is integrally formed on one side of the slider. Two traction rollers are integrally formed at the front and rear ends of the connecting plate, respectively. A reciprocating ring is sleeved in the middle of the two traction rollers. A ball bearing is slidably connected to the outer ring of the reciprocating ring. A traction cylinder is slidably connected to the outer side of the traction rollers. The ball bearing is slidably connected to the inner wall of the traction cylinder. A groove is provided on the outer side of the traction cylinder. The PET plastic steel belt is pulled into the bottom of the guide roller through the surface of the groove, and then pulled out from the surface of the groove of the other traction roller.

[0008] The present invention further explains that the photosensitive layer consists of a light source, a moving ruler, and a photosensitive element. The photosensitive module is used to form moiré fringes with the grating stripes on the fixed ruler by moving the moving ruler with the object, and then receive the light signal of brightness change through the photosensitive element. Each change cycle corresponds to a fixed displacement. The displacement distance of the thickness detection plate is obtained by counting, thereby detecting the thickness change of the PET plastic steel belt in real time. The reciprocating ring shaft is connected to the middle of the traction roller, and the outer ring is provided with a ring groove. The reciprocating ring is inclined. The inner wall of the traction cylinder is provided with a sliding hole, and a spring is provided in the sliding hole. One end of the spring is provided with a sliding rod. The ball is tumblingly connected to the inside of the sliding rod and tumblingly connected to the ring groove.

[0009] The present invention further illustrates that the traction roller has a hollow cavity inside, the reciprocating ring has a boss on the outer side of the shaft and the boss is located in the hollow cavity, the traction roller is internally threaded with a screw, one end of the screw is integrally formed with a toothed disc, and the other end is integrally formed with two limiting platforms on the outer side and the limiting platforms are located in the hollow cavity, and the boss is embedded between the two limiting platforms.

[0010] The present invention further illustrates that a gear is rotatably connected to the right side of the detection cavity, and the gear meshes with the gear disk.

[0011] The present invention further illustrates that the gear has limit positions on both the left and right sides, and the gear disc is embedded in the limit positions of the gear.

[0012] The present invention further illustrates that one end of the gear is provided with a silicone layer, and the silicone layer is in contact with one end of the guide roller.

[0013] The present invention further illustrates that the inner diameter of the traction cylinder is larger than the outer diameter of the reciprocating ring after it is perpendicular.

[0014] The present invention further illustrates that the groove surface of the traction cylinder is provided with a frosted layer.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: The photosensitive module, which adopts the principle of grating ruler, accurately counts the displacement distance of the thickness detection plate, realizing non-contact, high-precision, real-time online detection of PET plastic steel strip thickness. The detection accuracy can reach the micron level, with strong anti-interference ability and effectively avoiding human reading errors.

[0016] Through the cooperative structure of traction cylinder, ball bearings and inclined reciprocating ring, the friction force during PET plastic steel belt conveying is used to automatically drive the traction cylinder to generate axial reciprocating movement, so that the belt swings laterally between the thickness detection plate and the guide roller, realizing full-width scanning detection of the plastic steel belt, with more comprehensive detection coverage and significantly improving the representativeness of the detection results.

[0017] During the thickness detection process, deburring and polishing of the strip surface are achieved simultaneously. The reciprocating movement of the traction cylinder generates uniform friction between the strip and the groove surface of the traction cylinder. With the help of an adjustable tension enhancement mechanism, the surface quality of the strip can be improved without the need for additional cleaning equipment, simplifying the production line layout and reducing equipment costs. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the detection cavity of the present invention; Figure 3 This is an exploded view of the detection chamber and traction roller of the present invention; Figure 4 This is the front view of the present invention; Figure 5 This is a cross-sectional view of the traction roller of the present invention; Figure 6 This is an exploded view of the overall structure of the traction roller of the present invention; Figure 7 This is a plan view of the traction roller of the present invention. Figure 8 This is the right view of the present invention; Figure 9 This is a schematic diagram showing the mating relationship between the sliding hole, spring, sliding rod, and ball bearings of the present invention; In the diagram: 1. Detection chamber; 2. Traction roller; 21. Screw; 22. Gear disc; 23. Limiting platform; 3. Guide roller; 4. Thickness detection plate; 5. Slider; 6. Connecting plate; 7. Reciprocating ring; 71. Ball bearing; 8. Traction cylinder; 81. Slide rod; 9. Gear; 10. Silicone layer; 11. Sliding hole; 12. Spring. Detailed Implementation

[0019] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9 The present invention provides a technical solution: an all-round real-time thickness detection device for PET plastic steel strip processing, including a detection chamber 1 and two traction rollers 2. The inner wall of the detection chamber 1 is axially connected to a guide roller 3. A thickness detection plate 4 is arranged below the guide roller 3. The thickness detection plate 4 is slidably connected to the inner wall of the detection chamber 1, and a photosensitive layer is arranged at the sliding connection. An elastic spring is arranged between the photosensitive layer and the bottom of the inner wall of the detection chamber 1. A photosensitive module is arranged inside the photosensitive layer. Adjusting bolts are connected to the left side of the detection chamber 1, and a slider 5 is set in the middle of the adjusting bolts. The slider 5 is slidably connected to the left side of the detection chamber 1. A connecting plate 6 is integrally formed on one side of the slider 5. Two traction rollers 2 are integrally formed at the front and rear ends of the connecting plate 6, respectively. A reciprocating ring 7 is sleeved in the middle of the two traction rollers 2. A ball bearing 71 is slidably connected to the outer ring of the reciprocating ring 7. A traction cylinder 8 is slidably connected to the outer side of the traction roller 2. The ball bearing 71 is slidably connected to the inner wall of the traction cylinder 8. A groove is provided on the outer side of the traction cylinder 8. The PET plastic steel belt is pulled into the bottom of the guide roller 3 through the surface of the groove, and then pulled out from the surface of the groove of the other traction roller 2. During the production of PET plastic steel strapping, the PET plastic steel strapping is guided into the space between the guide roller 3 and the thickness detection plate 4 through the groove of the traction cylinder 8, and then exited from the groove surface of another traction cylinder 8. During the conveying process, the thickness detection plate 4 contacts the bottom surface of the PET plastic steel strapping. When the thickness is too thick or uneven, the thickness detection plate 4 is squeezed or subjected to the reaction force of the elastic spring, causing it to slide up and down along the inner wall of the detection chamber 1. The displacement distance of the thickness detection plate 4 is sensed by the photosensitive module, thereby detecting the change in the thickness of the PET plastic steel strapping. This allows for the rapid screening of unqualified PET plastic steel strapping. Simultaneously, during the traction process, the bottom surface of the PET plastic steel strapping... Friction is generated between the grooves of the traction cylinder 8, which drives the traction cylinder 8 to rotate. The traction cylinder 8 rolls in the inclined annular groove of the reciprocating ring 7 via the ball bearings 71. Since the direction of the annular groove is at an angle to the axis of the traction roller 2, the ball bearings 71 are subject to the constraint reaction force of the side wall of the annular groove during the rolling process. The axial component of this reaction force drives the traction cylinder 8 to move left and right along the axis of the traction roller 2, thereby driving the PET plastic steel belt to move laterally back and forth between the thickness detection plate 4 and the guide roller 3, realizing full-width scanning detection, which is more comprehensive in thickness detection and has higher detection accuracy. At the same time, it removes the surface burrs of the PET plastic steel belt, has a certain deburring ability, and improves the production quality of the PET plastic steel belt.

[0021] The photosensitive layer consists of a light source, a moving ruler, and a photosensitive element. The photosensitive module is used to move the moving ruler with the object and form moiré fringes with the grating stripes on the fixed ruler. The photosensitive element then receives the light signal of the change in brightness. Each change cycle corresponds to a fixed displacement. The displacement distance of the thickness detection plate 4 is obtained by counting, thereby detecting the thickness change of the PET plastic steel strip in real time. The reciprocating ring 7 is connected to the middle of the traction roller 2, and the outer ring is provided with an annular groove. The reciprocating ring 7 is inclined. The inner wall of the traction cylinder 8 is provided with a sliding hole 11, and a spring 12 is provided in the sliding hole 11. The outer end of the spring 12 is fixedly connected to a sliding rod 81. The outer end of the sliding rod 81 forms a ball-and-socket structure. The ball 71 is partially embedded in the ball-and-socket structure and rolls in contact with the annular groove of the outer ring of the reciprocating ring 7. When the traction cylinder 8 rotates with the PET plastic steel belt, the ball 71 rolls along the inclined annular groove. Through the elastic buffering effect of the sliding rod 81 and the spring 12, the ball 71 always maintains close contact with the annular groove, and at the same time, the rotational motion is converted into the axial reciprocating motion of the traction cylinder 8. High-precision detection is achieved through the principle of grating ruler, with extremely high accuracy and strong anti-interference. At the same time, the traction cylinder 8 rolls in the annular groove of the reciprocating ring 7 via the ball bearing 71. The ball bearing 71 can move in and outward in a small range via the slide rod 81, thus producing a flexible effect. The rolling between the ball bearing 71 and the annular groove is smoother, which makes the traction cylinder 8 move more smoothly left and right, avoiding jamming or stuck phenomena, and greatly improving stability.

[0022] The traction roller 2 has a hollow cavity inside. The reciprocating ring 7 has a boss on the outside of the shaft, and the boss is located in the hollow cavity. The traction roller 2 has a screw 21 threaded inside. One end of the screw 21 has a toothed disc 22 integrally formed, and the other end has two limiting platforms 23 integrally formed on the outside, and the limiting platforms 23 are located in the hollow cavity. The boss is embedded between the two limiting platforms 23. For thickness detection requiring higher precision, the operator can rotate the gear plate 22, causing it to drive the screw 21 to move left and right via threaded transmission. This, in turn, drives the reciprocating ring 7 to rotate slightly via the shaft through the limiting platform 23 and the boss. Within a safe adjustment range, the tilt angle of the reciprocating ring 7 can be slightly changed (usually not exceeding ±5°). At this time, the stroke of the traction cylinder 8, which reciprocates through the ball bearings 71, increases accordingly. Since the elastic support structure formed by the slide rod 81 and the spring 12 allows the ball bearings 71 to move radially, it can automatically compensate for the gap caused by the angle change, ensuring that the ball bearings 71 are always engaged in the ring groove and preventing derailment. As a result, when the thickness detection plate 4 detects the thickness of the PET plastic steel strip, the detection is more detailed and the detection precision is higher, and the entire PET plastic steel strip can be detected evenly. Meanwhile, during the rotation of the reciprocating ring 7, the ball 71 is compressed, which in turn compresses the spring 12 through the slide rod 81. The spring 12 generates a reaction force, increasing the compressive force between the ball 71 and the groove of the reciprocating ring 7. The tightness between the two is enhanced, which slows down the speed of the traction cylinder 8 during reciprocating movement and reduces the rotation speed. The friction between its groove surface and the bottom surface of the PET plastic steel belt is enhanced, which pulls on the PET plastic steel belt, thereby increasing the tension of the PET plastic steel belt. This prevents the PET plastic steel belt from becoming loose and causing inaccurate thickness detection, and provides good traction.

[0023] Gear 9 is rotatably connected to the right side of detection chamber 1, and gear 9 meshes with gear disk 22.

[0024] Limiters are provided on the left and right sides of gear 9, and gear disc 22 is embedded in the limiters of gear 9; The operator only needs to rotate one of the gear discs 22 to drive the other gear disc 22 to rotate synchronously in the same direction through the gear 9. The two traction cylinders 8 have stronger displacement synchronization, which can effectively prevent the PET plastic steel belt from bending or being twisted and pulled, and prevent the PET plastic steel belt from breaking, thus protecting the PET plastic steel belt.

[0025] A silicone layer 10 is provided at one end of the gear 9, and the silicone layer 10 is in contact with one end of the guide roller 3; By limiting the position of gear 9, when the gear disc 22 moves through the threaded transmission of screw 21, it drives gear 9 to move. The movement of gear 9 squeezes the silicone layer 10, thereby squeezing the guide roller 3 and reducing the smoothness of the rotation of the guide roller 3. At this time, the friction on the upper surface of the PET plastic steel belt can be strengthened, and both the upper and lower surfaces of the PET plastic steel belt can be effectively rubbed, thus achieving a better burr removal effect. In addition, the PET plastic steel belt can be straightened more during conveying, the tension is further improved, the traction effect is greatly enhanced, and the thickness detection plate 4 can further improve the thickness detection accuracy of the PET plastic steel belt.

[0026] The inner diameter of the traction cylinder 8 is larger than the outer diameter of the reciprocating ring 7 after it is perpendicular to the ground.

[0027] The groove surface of the traction cylinder 8 is provided with a frosted layer; After the PET plastic steel belt is straightened, the friction between it and the groove surface of the traction cylinder 8 is enhanced, which enables the surface of the PET plastic steel belt to be polished while deburring and high-precision inspection is performed, greatly improving the production quality of PET plastic steel belt. The subsequent deburring and polishing processes can be reduced by using this inspection device, which greatly reduces the cost.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A real-time omnidirectional thickness detection device for processing PET plastic steel strip, comprising a detection chamber (1) and two traction rollers (2), characterized in that: The inner wall of the detection cavity (1) is axially connected to a guide roller (3), and a thickness detection plate (4) is provided below the guide roller (3). The thickness detection plate (4) is slidably connected to the inner wall of the detection cavity (1), and a photosensitive layer is provided at the sliding connection. A spring is provided between the photosensitive layer and the bottom of the inner wall of the detection cavity (1). A photosensitive module is provided inside the photosensitive layer. The left side of the detection chamber (1) is connected with adjusting bolts, and a slider (5) is set in the middle of the adjusting bolts. The slider (5) is slidably connected to the left side of the detection chamber (1). A connecting plate (6) is integrally formed on one side of the slider (5). Two traction rollers (2) are integrally formed at the front and rear ends of the connecting plate (6). A reciprocating ring (7) is sleeved in the middle of the two traction rollers (2). A ball bearing (71) is slidably connected to the outer ring of the reciprocating ring (7). A traction cylinder (8) is slidably connected to the outer side of the traction roller (2). The ball bearing (71) is slidably connected to the inner wall of the traction cylinder (8). A groove is provided on the outer side of the traction cylinder (8). The PET plastic steel belt is pulled into the bottom of the guide roller (3) through the groove surface and then pulled out from the groove surface of the other traction roller (2). The reciprocating ring (7) The shaft is connected to the middle of the traction roller (2) and the outer ring is provided with an annular groove. The reciprocating ring (7) is inclined. The inner wall of the traction cylinder (8) is provided with a sliding hole (11) and a spring (12) is provided in the sliding hole (11). One end of the spring (12) is provided with a sliding rod (81). The ball (71) is tumbling connected to the inside of the sliding rod (81) and tumbling connected to the annular groove. The traction roller (2) is provided with a hollow cavity. The shaft of the reciprocating ring (7) is provided with a boss on the outside and the boss is located in the hollow cavity. The traction roller (2) is threadedly connected with a screw (21). One end of the screw (21) is integrally formed with a toothed disc (22), and the other end is integrally formed with two limiting platforms (23) on the outside and the limiting platforms (23) are located in the hollow cavity. The boss is embedded between the two limiting platforms (23).

2. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 1, characterized in that: The photosensitive layer consists of a light source, a moving ruler, and a photosensitive element. The photosensitive module is used to move with the object through the moving ruler to form moiré fringes with the grating stripes on the fixed ruler, and then receive the light signal of brightness change through the photosensitive element. Each change cycle corresponds to a fixed displacement. The displacement distance of the thickness detection plate (4) is obtained by counting, thereby detecting the thickness change of PET plastic steel belt in real time.

3. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 2, characterized in that: The right side of the detection chamber (1) is rotatably connected to a gear (9), and the gear (9) meshes with the gear disk (22).

4. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 3, characterized in that: Limits are provided on the left and right sides of the gear (9), and the gear disc (22) is embedded in the limit of the gear (9).

5. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 4, characterized in that: One end of the gear (9) is provided with a silicone layer (10), and the silicone layer (10) is in contact with one end of the guide roller (3).

6. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 5, characterized in that: The inner diameter of the traction cylinder (8) is larger than the outer diameter of the reciprocating ring (7) after it is perpendicular.

7. The omnidirectional real-time thickness detection device for PET plastic steel strip processing according to claim 6, characterized in that: The groove surface of the traction cylinder (8) is provided with a frosted layer.

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