Packing Belt Brittleness Detection Device and Packing Belt Brittleness Detection Method

Abstract

The present invention discloses a brittle detection device and a brittle detection method for a packing belt, belonging to the field of packing belts. The device includes a frame, a belt guiding mechanism and a belt clamping mechanism. The belt clamping mechanism is arranged in front of the belt guiding mechanism according to the traveling order of the packing belt and is used for squeezing both sides of the packing belt. It includes a first clamping member and a second clamping member that can perform opening and closing actions relative to each other. The packing belt passes between the first clamping member and the second clamping member, and pits for cooperating with the edges of the packing belt are arranged on the surfaces of both the first clamping member and the second clamping member. This brittle detection device for packing belts does not require manual holding of a vise to clamp the packing belt, reducing the influence of human factors on the detection results. Instead, by squeezing both sides of the packing belt, the packing belt is bent and then elastically restored, and then it is observed whether there are defects on the surface of the packing belt due to the extrusion. The detection process does not depend on the skill, experience and proficiency of the detector, and the continuous transmission of the packing belt by the belt guiding mechanism is beneficial to improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to a brittle detection device and method for packing belts, belonging to the field of packing belts. Background Art

[0002] Packing belts, also known as packaging tapes and strapping tapes, are long and flat strips made of plastics such as polyethylene, polyvinyl chloride, polypropylene or polyethylene terephthalate. For the convenience of transportation and use, packing belts are usually sold in rolls.

[0003] In the production process of roll-packed packing belts, materials are fed into an extruder, and the extruder produces multiple packaging tapes. After cooling and orientation, the multiple packaging tapes are transported and distributed to multiple winding machines for winding to form roll-packed packing belts.

[0004] In current standards such as the "QB / T 4010-2010 Polyester Packing Belt Standard", the performance requirements for packing belts only specify the tensile strength and elongation at break. However, during the production process of packing belts, after orientation treatment, the mechanical properties of the packing belts in the longitudinal direction (length direction) and the transverse direction (width direction) are not the same. Some packing belts have a very high tensile strength in the longitudinal direction but are very brittle in the transverse direction. Although they meet the requirements of current standards, they are prone to forming silver streaks or even cracking during use.

[0005] There are various methods in the prior art for detecting the transverse brittleness of packing belts. For example, a section of the packing belt is cut as a sample, and the two edges in the width direction of the packing belt are clamped with a vise, and then whether there are defects on the packing belt is observed. Another example is to pierce the packing belt with a steel nail and observe whether cracks appear around the perforation. If there is only a perforation without cracks, it proves that the packing belt is not brittle. These methods are highly related to the tester's testing skills, are greatly affected by human factors, and are related to the tester's proficiency, and cannot objectively reflect the brittleness of the packing belt. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a brittle detection device and method for packing belts to objectively detect the brittleness of packing belts.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0008] In a first aspect, a brittle detection device for packing belts according to the present application includes:

[0009] A tape guiding mechanism for transporting the packing belt;

[0010] The entraining mechanism is arranged in front of the tape guiding mechanism according to the advancing order of the packing tape, and is used for squeezing both sides of the packing tape. It includes a first entraining member and a second entraining member that can perform opening and closing actions relative to each other. The packing tape passes between the first entraining member and the second entraining member. Both the surfaces of the first entraining member and the second entraining member are provided with pit grooves for cooperating with the edges of the packing tape.

[0011] The frame is used to carry the tape guiding mechanism and the entraining mechanism.

[0012] The packing tape brittleness detection device provided by the present application uses the entraining mechanism to clamp the packing tape, with a constant clamping force, and can objectively detect the brittleness of the packing tape.

[0013] Further, the tape guiding mechanism includes a tape guiding supporting wheel and a traction motor arranged on the frame. A tape guiding roller is arranged at the output end of the traction motor. The tape guiding supporting wheel can rotate freely. The packing tape passes between the tape guiding roller and the tape guiding supporting wheel. The tape guiding roller and the tape guiding supporting wheel press against both sides of the packing tape. The traction motor drives the tape guiding roller to rotate, which can pull the packing tape and make the packing tape keep advancing.

[0014] Furthermore, baffles are arranged on both sides of the tape guiding supporting wheel, and the distance between the two baffles is greater than the width of the packing tape. The baffles are used to prevent the packing tape from escaping between the tape guiding roller and the tape guiding supporting wheel.

[0015] Further, the surface of the tape guiding roller is provided with anti-slip lines for increasing the friction between the tape guiding roller and the packing tape and reducing slippage.

[0016] Further, the second entraining member is an entraining auxiliary roller freely rotatably connected to the frame, the first entraining member is an entraining roller freely rotatably connected to an eccentric column, and the entraining mechanism further includes an entraining motor. The eccentric column is in transmission connection with the output end of the entraining motor. The rotating shaft of the entraining auxiliary roller does not move, and the eccentric movement of the entraining roller can continuously move away from and approach the entraining auxiliary roller, realizing the opening and closing actions, so as to continuously squeeze both sides of the packing tape.

[0017] Furthermore, multiple pit grooves are arranged on both the entraining roller and the entraining auxiliary roller, and each pit groove is annular.

[0018] Further, a slide rail is provided on the frame. A slider slidably connected to the slide rail is arranged inside the slide rail. The second clamping member passes through the slide rail and is connected to the slider. The slider is connected with a locking knob passing out of the slide rail. A second relief groove for the movement of the locking knob and a first relief groove for the movement of the second clamping member are provided on the slide rail. Loosen the locking knob and toggle the second clamping member to adjust the distance between the first clamping member and the second clamping member.

[0019] Further, the width of the groove of the pit is greater than the thickness of the packing belt and less than twice the thickness of the packing belt.

[0020] Further, the packing belt brittleness detection device further includes an identification mechanism. The identification mechanism includes an industrial camera and an image processor signal-connected to the industrial camera. The industrial camera is aligned with the packing belt squeezed by the clamping mechanism.

[0021] In a second aspect, the present application provides a method for detecting the brittleness of a packing belt, including the following steps:

[0022] Pass the packing belt through the packing belt brittleness detection device as described in the first aspect;

[0023] Identify the defects on the surface of the packing belt squeezed by the clamping mechanism;

[0024] Give an alarm.

[0025] This method for detecting the brittleness of a packing belt does not require manual clamping and nailing of the packing belt, does not depend on the skill of the tester, and can objectively detect the brittleness of the packing belt.

[0026] The beneficial effects of the present invention are as follows: The packing belt brittleness detection device of the present invention does not require manual holding of a vise to clamp the packing belt, reduces the influence of human factors on the detection result, but squeezes both sides of the packing belt to bend and then elastically recover the packing belt, and then observes whether there are defects on the surface of the packing belt due to extrusion. The detection process does not depend on the skill, experience and proficiency of the detector, and continuously transports the packing belt through the tape guiding mechanism, which is beneficial to improving the detection efficiency.

[0027] Other features and advantages of the present application will be described in the subsequent specification, and part of them will become obvious from the specification, or be understood by implementing the present application. The objectives and other advantages of the present application can be realized and obtained through the structures specifically pointed out in the written specification, claims and drawings. Description of the Drawings

[0028] Figure 1 is one of the perspective views of a packing belt brittleness detection device provided by an embodiment of the present application.

[0029] Figure 2It is a perspective view of a second clamping member provided by an embodiment of the present application.

[0030] Figure 3 It is a front view of a brittle detection device for a packing belt provided by an embodiment of the present application.

[0031] Figure 4 It is a second perspective view of a brittle detection device for a packing belt provided by an embodiment of the present application.

[0032] Reference numerals: 11, tape guiding roller; 111, traction motor; 12, tape guiding supporting roller; 121, baffle; 21, clamping roller; 211, clamping motor; 212, eccentric column; 22, clamping auxiliary roller; 3, frame; 31, slide rail; 311, slider; 312, locking knob; 313, second relief groove; 314, first relief groove; 4, industrial camera; 41, lens. Detailed implementation manners

[0033] The following describes in detail the implementation manners of the present invention. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0035] The following disclosure provides many different implementation manners or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various implementation manners and / or settings discussed.

[0036] The toughness of the packing belt is reflected in the tensile strength and impact strength. As described in the "QB / T 4010-2010 Polyester Packing Belt Standard", in the prior art, the method for testing the toughness or brittleness of the packing belt is to cut a section of the packing belt as a sample, clamp it on a tensile strength testing machine, and test the tensile strength and elongation at break of the sample. This method can only take samples for spot checks and cannot reflect the quality of the entire roll of packing belt. Moreover, in order not to interrupt production, samples can only be taken after winding. If substandard packing belts have been wound, the time and electricity used for winding are wasted. On the other hand, when the highly automated production line winds up the packing belt, it automatically measures the length. After winding enough specified length, it automatically bundles or films to achieve automatic packing. When taking samples, it is necessary to untie the packaging of the wound packing belt again, and the total length of the wound packing belt will be reduced.

[0037] In view of the deficiencies of the prior art, with reference to Figure 1 , the embodiment of the present application provides a packing belt brittleness detection device, including a belt guiding mechanism for transporting the packing belt, a clamping mechanism for squeezing both sides of the packing belt (the packing belt includes two planes, and the two sides of the plane are the edges of the packing belt), and a frame 3 for carrying the belt guiding mechanism and the clamping mechanism. The clamping mechanism is arranged in front of the belt guiding mechanism according to the traveling order of the packing belt, and includes a first clamping member and a second clamping member that can perform opening and closing actions relative to each other. The packing belt passes between the first clamping member and the second clamping member, and both the surfaces of the first clamping member and the second clamping member are provided with pits for cooperating with the edges of the packing belt.

[0038] The first clamping member and the second clamping member continuously perform the cycle of separating - approaching - separating. When approaching, they squeeze both sides of the packing belt. The packing belt with strong enough toughness will elastically recover and flatten again after being squeezed; the visibly brittle packing belt will fold out silver streaks or crack after being squeezed. Therefore, by observing the squeezed packing belt, it can be judged whether the toughness (brittleness) of the packing belt meets the standard, which is convenient and fast. The observation process can rely on human eye recognition or industrial camera recognition. In the traditional detection method, the tester needs to clamp both sides in the width direction of the packing belt with a vise. When testing multiple points of a section of the packing belt, after clamping once, it is necessary to realign both sides in the width direction of the next position before clamping again, resulting in low efficiency. Moreover, when clamping the packing belt, the packing belt is prone to being torsionally stressed and not being bent, making it difficult to truly reflect the brittleness of the packing belt.

[0039] The embodiment of the present application uses the first clamping member and the second clamping member to continuously clamp both sides in the width direction of the packing belt, uses the pits to prevent the packing belt from sliding and twisting, and uses the belt guiding mechanism to continuously transport the packing belt, which can improve the detection efficiency, ensure the consistency of the clamping force, and can efficiently and objectively detect the brittleness of the packing belt.

[0040] Correspondingly, the embodiment of the present application also provides a packing belt brittleness detection method, including the following steps:

[0041] S1: Pass the packing belt through the above-mentioned packing belt brittleness detection device, and let the packing belt be squeezed on both sides by the first clamping member and the second clamping member.

[0042] S2: Identify the defects on the surface of the packing belt that has been squeezed by the clamping mechanism. Specifically, it can be identified by an industrial camera.

[0043] S3: Give an alarm. The form of the alarm can be that the packing belt brittleness detection device makes a sound, and the packing belt brittleness detection device needs to be equipped with a sound-emitting mechanism; the form of the alarm can also be to send a message to the operator's mobile phone, and the packing belt brittleness detection device needs to be equipped with a communication module.

[0044] The packing belt brittleness detection device of the embodiment of the present application can work at two working rhythms. First, intermittent detection. The tape guiding mechanism continuously transports the packing belt, and the clamping mechanism makes the first clamping member and the second clamping member close once every period of time (such as 1 second, such as 2 minutes), and then immediately opens, and remains open for the rest of the time. In this way, the brittleness of the packing belt can be intermittently detected, which belongs to sampling inspection, but there is no need to cut and sample. Second, full-length detection. The tape guiding mechanism transports the packing belt for 1 second and then stops. The clamping mechanism makes the first clamping member and the second clamping member close once, and then immediately opens. The tape guiding mechanism transports the packing belt for 1 second again, and the clamping mechanism acts again. In this way, the full length of the packing belt can be detected.

[0045] When the first clamping member approaches the second clamping member, the edge of the packing belt is embedded in the pit. The pit is used to prevent the edge of the packing belt from sliding on the first clamping member and the second clamping member. If the edge of the packing belt slides on the first clamping member and the second clamping member, the packing belt will twist, and the clamping mechanism cannot squeeze the packing belt. Therefore, the depth of the pit is preferably 1 mm to one-fourth of the width of the packing belt; preferably, the width of the pit is greater than the thickness of the packing belt and less than twice the thickness of the packing belt. When the packing belt passes horizontally through the packing belt brittleness detection device, that is, as Figure 1 shown, the width of the groove refers to the vertical dimension inside the pit.

[0046] Specifically, the tape guiding mechanism includes a tape guiding idler wheel 12 and a traction motor 111 arranged on the frame 3. A tape guiding roller 11 is arranged at the output end of the traction motor 111. The tape guiding idler wheel 12 can rotate freely. The packing belt passes between the tape guiding roller 11 and the tape guiding idler wheel 12, and the tape guiding roller 11 and the tape guiding idler wheel 12 press on both sides of the packing belt (two planes of the packing belt). The tape guiding roller 11 presses the packing belt on the tape guiding idler wheel 12, and the traction motor 111 drives the tape guiding roller 11 to rotate actively, thereby pulling the packing belt ( Figure 1 The arrow in indicates the traveling direction of the packing belt), and the tape guiding roller 11 rotates as the packing belt moves. In addition to pulling the packing belt, the packing belt is squeezed at the clamping mechanism, and the tape guiding roller 11 and the tape guiding idler wheel 12 pressing on the packing belt can also flatten the packing belt again.

[0047] Baffles 121 are provided on both sides of the lead roller 12, and the distance between the two baffles 121 is greater than the width of the strapping tape. The strapping tape can only pass between the lead roller 11, the lead roller 12 and the two baffles 121 to prevent the strapping tape from escaping the lead mechanism. Preferably, the surface of the lead roller 11 is provided with anti-skid patterns to increase friction, prevent the lead roller 11 from slipping, and ensure that the lead roller 11 can pull the strapping tape.

[0048] The second entraining member is an entraining auxiliary roller 22 freely rotatably connected to the frame 3, the first entraining member is an entraining roller 21 freely rotatably connected to an eccentric column 212, and the entraining mechanism also includes an entraining motor 211, and the eccentric column 212 is transmission-connected to the output end of the entraining motor 211. The entraining motor 211 drives the eccentric column 212 to rotate in one direction, and the entraining roller 21 set on the eccentric column 212 can continuously move away from or close to the entraining auxiliary roller 22. When the entraining roller 21 moves away from the entraining auxiliary roller 22, the minimum distance between the entraining roller 21 and the entraining auxiliary roller 22 is greater than the width of the strapping tape; when the entraining roller 21 approaches the entraining auxiliary roller 22, the minimum distance between the entraining roller 21 and the entraining auxiliary roller 22 is less than the width of the strapping tape, so that the strapping tape can be continuously released and squeezed in the process of the entraining roller 21 continuously moving away from or close to the entraining auxiliary roller 22. The entrainment roller 21 and the entrainment auxiliary roller 22 can rotate freely, reducing the friction between themselves and the strapping tape, so that the action is simple squeezing, rather than pulling. Preferably, the entrainment roller 21 and the entrainment auxiliary roller 22 are provided with a plurality of grooves, each of which is annular, so as to adapt to the rotation of the entrainment roller 21 and the entrainment auxiliary roller 22 during the squeezing of the strapping tape.

[0049] In order to make the strapping tape brittleness detection device adapt to various types of strapping tapes, refer to Figure 2 The frame 3 is provided with a slide rail 31, a slider 311 is provided in the slide rail 31 and is slidably connected to the slide rail 31, the second entraining member passes through the slide rail 31 and is connected to the slider 311, the slider 311 is connected to a locking knob 312 that passes through the slide rail 31, and the slide rail 31 is provided with a second clearance groove 313 for the locking knob 312 to move and a first clearance groove 314 for the second entraining member to move. In this way, the distance between the second entraining member and the first entraining member can be adjusted. When adjusting, first loosen the locking knob 312, then move the second entraining member to make the slider 311 slide in the slide rail 31, thereby changing the distance between the second entraining member and the first entraining member. After adjusting to an appropriate distance, the slider 311 is re-fixed using the locking knob 312.

[0050] Reference Figure 3 and Figure 4, the brittle detection device for the packing belt further includes an identification mechanism. The identification mechanism includes an industrial camera 4 and an image processor (not shown in the figure) that is signal-connected to the industrial camera 4. The industrial camera 4 is aligned with the packing belt that has been squeezed by the clamping mechanism. In some embodiments, as Figure 4 shown, a lens 41 is provided above the clamping mechanism, and an industrial camera 4 is provided above the lens 41. The industrial camera 4 immediately takes a picture of the squeezed packing belt, and the image processor makes an analysis and judgment. In other embodiments, as Figure 3 shown, the industrial camera 4 is arranged after the belt guiding mechanism in the traveling order of the packing belt, and both sides of the packing belt are photographed. The image processor analyzes whether there are defects on both sides of the packing belt.

[0051] In the description of this specification, the descriptions referring to terms such as "one embodiment", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A brittle detection device for packing belts, characterized in that, Comprising: A tape guiding mechanism for transporting a packing tape; A tape clamping mechanism arranged before the tape guiding mechanism in the advancing order of the packing tape, for squeezing both sides of the packing tape, including a first clamping member and a second clamping member capable of opening and closing relative to each other, the packing tape passes between the first clamping member and the second clamping member, and both the surfaces of the first clamping member and the second clamping member are provided with pits for cooperating with the edges of the packing tape; A frame (3) for carrying the tape guiding mechanism and the tape clamping mechanism; The tape guiding mechanism includes a tape guiding supporting wheel (12) and a traction motor (111) arranged on the frame (3), a tape guiding roller (11) is arranged at the output end of the traction motor (111), the tape guiding supporting wheel (12) can rotate freely, the packing tape passes between the tape guiding roller (11) and the tape guiding supporting wheel (12), and the tape guiding roller (11) and the tape guiding supporting wheel (12) press both sides of the packing tape.

2. The brittle detection device for the packing belt according to claim 1, wherein, Baffles (121) are arranged on both sides of the tape guiding supporting wheel (12), and the distance between the two baffles (121) is greater than the width of the packing tape.

3. The brittle detection device for the packing belt according to claim 1, characterized in that, The surface of the tape guiding roller (11) is provided with anti-slip lines.

4. The brittle detection device for the packing belt according to claim 1, characterized in that The second clamping member is a clamping auxiliary roller (22) freely rotatably connected to the frame (3), the first clamping member is a clamping roller (21) freely rotatably connected to an eccentric column (212), and the tape clamping mechanism further includes a clamping motor (211), and the eccentric column (212) is in transmission connection with the output end of the clamping motor (211).

5. The brittle detection device for the packing belt according to claim 4, characterized in that, Multiple pits are arranged on both the clamping roller (21) and the clamping auxiliary roller (22), and each pit is annular.

6. The brittle detection device for the packing belt according to claim 1, wherein, A slide rail (31) is arranged on the frame (3), a slider (311) slidably connected to the slide rail (31) is arranged in the slide rail (31), the second clamping member passes through the slide rail (31) and is connected to the slider (311), the slider (311) is connected with a locking knob (312) passing out of the slide rail (31), and a second relief groove (313) for the movement of the locking knob (312) and a first relief groove (314) for the movement of the second clamping member are arranged on the slide rail (31).

7. The brittle detection device for the packing belt according to claim 1, characterized in that, The groove width of the pit is greater than the thickness of the packing tape and less than twice the thickness of the packing tape.

8. The brittle detection device for the packing belt according to claim 1, characterized in that, It further includes an identification mechanism, the identification mechanism includes an industrial camera (4) and an image processor signal-connected to the industrial camera (4), and the industrial camera (4) is aligned with the packing tape squeezed by the tape clamping mechanism.

9. A method for detecting the brittleness of a packing belt, characterized in that, Including the following steps: Making the packing tape pass through the packing tape brittleness detection device according to any one of claims 1 to 8; Identifying the defects on the surface of the packing tape squeezed by the tape clamping mechanism; Giving an alarm.

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