Device for measuring back engagement of slitting knife

Abstract

Provided in the present application is a device for measuring the back engagement of a slitting knife. The device comprises a support unit and a measurement unit, wherein a knife holder of a slitting knife is placed on the support unit; and the measurement unit is connected to the support unit, and the measurement unit comprises a charge-coupled device (CCD) sensor assembly, the CCD sensor assembly being arranged towards the slitting knife, so as to measure the back engagement of the slitting knife. Compared with the determination of back engagement in a manual visual observation manner, using the CCD sensor assembly to measure the back engagement of the slitting knife can improve the measurement efficiency and the measurement precision, thereby guaranteeing the quality of products.

Description

Slitting knife distance detection device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 31, 2024, with application number 202422658035.6. The entire contents of the above application are incorporated by reference into this application.

[0002] Technical Field

[0003] The present application relates to the field of mechanical detection technology, and in particular to a slitting knife approach detection device.

[0004] Background Art

[0005] During the battery production process, a slitting knife is needed to cut the electrodes.

[0006] Technical issues

[0007] The cutting edge of the slitting knife is sharp, but the blade is fragile and easily damaged. Currently, there is no suitable detection method to detect the amount of cutting. Generally, experienced operators rely on visual inspection to adjust the amount of cutting. This is not only inefficient, but also the detection accuracy is uncontrollable, which affects product quality.

[0008] Technical Solutions

[0009] The present invention provides a device for detecting the distance between a slitting knife and a cutting blade, comprising:

[0010] a support unit on which a knife holder of the slitting knife is placed;

[0011] The detection unit is connected to the supporting unit, and the detection unit includes a CCD sensor component. The CCD sensor component is arranged toward the slitting knife to detect the amount of the slitting knife leaning against the knife.

[0012] Optionally, a plurality of slitting knives are arranged on the knife shaft along the first direction, and the detection unit is movably connected to the support unit along the first direction, so that the CCD sensor assembly can move relative to the support unit along the first direction.

[0013] Optionally, the detection unit further includes a slide rail and a slider, the slide rail is provided on the support unit, the slide rail extends along the first direction, the slider is slidably engaged with the slide rail, and the CCD sensor assembly is connected to the slider.

[0014] Optionally, the detection unit further includes a clamp, wherein the clamp is connected to the slider and cooperates with the slide rail.

[0015] Optionally, the CCD sensor assembly includes a light-emitting end sensor and a light-receiving end sensor arranged relatively along the second direction, and the detection unit also includes a support frame, the light-emitting end sensor and the light-receiving end sensor are respectively movably connected to the support frame along the third direction, and the support frame is connected to the slider.

[0016] Optionally, the support frame includes a first support plate and two second support plates, the first support plate extends along the second direction, the two second support plates both extend along the third direction, the first support plate is connected to the slider, and the two second support plates are movably connected to the first support plate along the second direction respectively, the light-emitting end sensor is movably connected to one of the second support plates along the third direction, and the light-receiving end sensor is movably connected to the other second support plate along the third direction.

[0017] Optionally, the support unit includes a support platform and a support wheel, an avoidance hole is opened on the support platform, the support wheel is arranged at the avoidance hole, the support wheel protrudes from the surface of the support platform, the tool holder can be moved to the detection position of the support platform, and the rolling direction of the support wheel is matched with the moving direction of the tool holder.

[0018] Optionally, the support unit further comprises a guide roller, a rotating shaft of the guide roller is connected to the support platform, the guide roller is capable of rolling in contact with the side wall of the tool holder, and the rolling direction of the guide roller matches the moving direction of the tool holder;

[0019] And / or, the support unit further includes a stopper, the stopper being protruding from the support platform, and the stopper being configured to prevent the tool holder from separating from the support platform.

[0020] Optionally, two groups of guide rollers are provided, and the multiple guide rollers in each group are arranged in sequence and spaced apart along the moving direction of the tool holder, and the two groups of guide rollers are respectively arranged on both sides of the tool holder along the moving direction.

[0021] Optionally, the support unit further includes a trolley, and the support platform is arranged on the trolley.

[0022] Beneficial effects

[0023] Beneficial effects of this application:

[0024] This application provides a device for detecting the amount of slitting knife leaning, comprising a support unit and a detection unit. The slitting knife's blade holder is placed on the support unit, and the detection unit is connected to the support unit. The detection unit includes a CCD sensor assembly positioned toward the slitting knife to detect the amount of slitting knife leaning. Compared to manual visual inspection, using the CCD sensor assembly to detect the amount of slitting knife leaning improves detection efficiency and accuracy, thereby ensuring product quality.

[0025] BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a slitting knife proximity detection device (including a knife holder, a knife shaft, and a slitting knife) provided in an embodiment of the present application;

[0027] FIG2 is a schematic structural diagram of a slitting knife approach detection device (excluding a knife holder, a knife shaft, and a slitting knife) provided in an embodiment of the present application;

[0028] FIG3 is a schematic structural diagram of another slitting knife approach detection device (excluding a knife holder, a knife shaft, and a slitting knife) provided in an embodiment of the present application;

[0029] FIG4 is a structural diagram of a slitting knife approach distance detection device (excluding a support platform) provided in an embodiment of the present application.

[0030] In the picture:

[0031] 1. Support unit; 11. Support platform; 12. Support wheel; 13. Guide roller; 14. Cart; 141. Frame; 142. Wheel; 143. Handrail; 15. Stopper;

[0032] 3. Detection unit; 31. Slide rail; 32. Slider; 33. Clamp; 34. Light-emitting end sensor; 35. Light-receiving end sensor; 36. First support plate; 37. Second support plate;

[0033] 700, knife holder; 800, knife shaft; 900, slitting knife.

[0034] Modes for Carrying Out the Invention

[0035] During the battery production process, slitting knives are needed to cut the electrodes. The slitting knives are sharp, but the cutting edges are fragile and easily damaged. Currently, there is no suitable detection method to detect the amount of slitting. Generally, experienced operators rely on visual inspection to adjust the amount of slitting. This is not only inefficient, but also the detection accuracy is uncontrollable, which affects product quality.

[0036] Therefore, this embodiment provides a slitting knife approach detection device that can improve detection efficiency and detection accuracy, thereby ensuring product quality. The unit to be tested includes a knife holder 700, a knife shaft 800, and a slitting knife 900. Two parallel knife shafts 800 are both disposed within the knife holder 700, and each knife shaft 800 is provided with a slitting knife 900. The slitting knife approach detection device can detect the gap between a group of slitting knives 900 on the two knife shafts 800.

[0037] As shown in Figures 1 to 4, the slitting knife leaning amount detection device of this embodiment includes a support unit 1 and a detection unit 3. The ab direction in Figure 3 is the first direction, the cd direction is the second direction, and the ef direction is the third direction. Among them, the knife holder 700 of the slitting knife 900 is placed on the support unit 1. The detection unit 3 is connected to the support unit 1, and the detection unit 3 includes a charge-coupled device (CCD) sensor assembly. The CCD sensor assembly is set toward the slitting knife 900 to detect the leaning amount of the slitting knife 900. The CCD sensor assembly can obtain the precise value of the distance between the two slitting knives 900, that is, the leaning amount, by detecting and calculating the projection of the gap between a group of two slitting knives 900.

[0038] Compared with manual visual inspection to determine the amount of knife leaning, using a CCD sensor assembly to detect the amount of knife leaning of the slitting knife 900 can improve detection efficiency and detection accuracy, thereby ensuring product quality.

[0039] Optionally, a plurality of slitting knives 900 are disposed along a first direction on the blade shaft 800, and the detection unit 3 is movably connected to the support unit 1 along the first direction, so that the CCD sensor assembly can move in the first direction relative to the support unit 1. That is, after the CCD sensor assembly detects the distance between the cutting knives 900 of one group, it can move along the first direction to the next group of cutting knives 900. This series of detection and movement operations can complete the detection of the distance between the multiple cutting knives 900 on the two blade shafts 800.

[0040] To facilitate movement of the CCD sensor assembly in the first direction, the detection unit 3 optionally further includes a slide rail 31 and a slider 32. The slide rail 31 is disposed on the support unit 1 and extends in the first direction. The slider 32 slidably engages with the slide rail 31, and the CCD sensor assembly is connected to the slider 32. In other words, the slider 32 can drive the CCD sensor assembly to move along the extension direction of the slide rail 31, i.e., the first direction. To improve movement stability, in this embodiment, two slide rails 31 and two sliders 32 are provided, and the two sliders 32 move on the two slide rails 31, respectively.

[0041] Optionally, the detection unit 3 also includes a clamp 33, which is connected to the slider 32. The clamp 33 cooperates with the slide rail 31. After the slider 32 drives the CCD sensor assembly to move to a suitable position along the first direction to align with a group of cutters 900, the clamp 33 can quickly lock the position of the CCD sensor assembly to ensure that the CCD sensor assembly will not shake during the subsequent shooting and detection process.

[0042] Optionally, the CCD sensor assembly includes a light-emitting end sensor 34 and a light-receiving end sensor 35 disposed opposite each other along the second direction. The light-emitting end sensor 34 and the light-receiving end sensor 35 are located on either side of the slitting blade 900 along the second direction. The detection unit 3 also includes a support frame. The light-emitting end sensor 34 and the light-receiving end sensor 35 are each movably connected to the support frame along the third direction. The support frame is connected to the slider 32.

[0043] Optionally, the support frame includes a first support plate 36 and two second support plates 37, the first support plate 36 extends along the second direction, the two second support plates 37 both extend along the third direction, the first support plate 36 is connected to the slider 32, the two second support plates 37 are respectively movably connected to the first support plate 36 along the second direction, the light-emitting end sensor 34 is movably connected to one second support plate 37 along the third direction, and the light-receiving end sensor 35 is movably connected to the other second support plate 37 along the third direction.

[0044] Optionally, the first support plate 36 has an assembly hole extending in the second direction, and the second support plate 37 is fixed to the first support plate 36 by means of an assembly fitting that engages with the assembly hole, with the assembly fitting being movable in the second direction. Optionally, the second support plate 37 has an assembly hole extending in the third direction, and the light-emitting sensor 34 is fixed to one second support plate 37 by means of an assembly fitting that engages with the assembly hole of the second support plate 37. The light-receiving sensor 35 is fixed to the second support plate 37 by means of an assembly fitting that engages with the assembly hole of the other second support plate 37. Both assembly fittings are movable in the third direction.

[0045] Optionally, the first direction and the third direction are both horizontal, the second direction is vertical, and the first direction is perpendicular to the third direction. Through the above-described movable mating structural design, the light-emitting end sensor 34 and the light-receiving end sensor 35 are disposed relative to each other in the vertical direction, the distance between them is adjustable, and their relative positions in the horizontal direction are also adjustable to align their optical axes.

[0046] Optionally, the support unit 1 includes a support platform 11 and support wheels 12. The support platform 11 has a clearance hole, and the support wheels 12 are positioned within the clearance hole. The axle of the support wheels 12 is connected to the support platform 11. The support wheels 12 protrude from the surface of the support platform 11, allowing the tool holder 700 to move to a detection position on the support platform 11. The rolling direction of the support wheels 12 aligns with the movement direction of the tool holder 700. The provision of the support wheels 12 facilitates movement of the tool holder 700, reduces sliding friction, and saves effort and time.

[0047] Optionally, the support unit 1 further includes a stopper 15, which protrudes from the support platform 11 and is configured to prevent the tool holder 700 from disengaging from the support platform 11. Optionally, the tool holder 700 is horizontally movable from the first end of the support platform 11 along a first direction onto the support platform 11. The stopper 15 is disposed at the second end of the support platform 11, with the first and second ends being disposed opposite each other along the first direction. The stopper 15 prevents the tool holder 700 from moving beyond its placement position and falling from the second end. Optionally, support wheels 12 are disposed near the first end of the support platform 11.

[0048] Optionally, the support unit 1 further includes guide rollers 13, the rotating shafts of which are connected to the support platform 11. The guide rollers 13 are capable of rolling against the sidewalls of the tool holder 700, with the rolling direction of the guide rollers 13 coordinating with the direction of movement of the tool holder 700. Optionally, two groups of guide rollers 13 are provided, with multiple guide rollers 13 in each group spaced sequentially along the direction of movement of the tool holder 700. The two groups of guide rollers 13 are respectively provided on either side of the tool holder 700 along the direction of movement to guide the movement of the tool holder 700. Optionally, anti-drop protrusions are also provided on both sides of the guide rollers 13 on the support platform 11 to prevent the tool holder 700 from detaching from the support platform 11.

[0049] Optionally, the support unit 1 includes a cart 14, on which the support platform 11 is mounted. The cart 14 includes a frame 141, wheels 142, and armrests 143 to facilitate movement of the slitting blade contact detection device. Optionally, the four wheels 142 are located at the four corners of the cart, each with a matching foot cup. Optionally, the support platform 11 is mounted on the top surface of the cart 14, and two slide rails 31 are provided on the sides of the frame 141.

[0050] The above embodiments of the present application are provided for the purpose of illustrating the present application and are not intended to limit the embodiments of the present application. Those skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the claims of the present application.

Claims

1. A slitting knife distance detection device, comprising: A support unit (1), a knife holder (700) of a slitting knife (900) being placed on the support unit (1); A detection unit (3) is connected to the support unit (1), the detection unit (3) comprising a charge coupled device (CCD) sensor assembly, the CCD sensor assembly being arranged towards the slitting knife (900) to detect the amount of contact of the slitting knife (900).

2. The slitting knife approach detection device according to claim 1, wherein: A plurality of slitting knives (900) are arranged on the knife shaft (800) along a first direction, and the detection unit (3) is movably connected to the support unit (1) along the first direction, so that the CCD sensor component can move relative to the support unit (1) along the first direction.

3. The slitting knife approach detection device according to claim 2, wherein: The detection unit (3) further comprises a slide rail (31) and a slider (32); the slide rail (31) is arranged on the support unit (1); the slide rail (31) extends along the first direction; the slider (32) slidably cooperates with the slide rail (31); and the CCD sensor assembly is connected to the slider (32).

4. The slitting knife approach detection device according to claim 3, wherein: The detection unit (3) further comprises a clamp (33), wherein the clamp (33) is connected to the sliding block (32), and the clamp (33) cooperates with the sliding rail (31).

5. The slitting knife approach detection device according to claim 3, wherein: The CCD sensor assembly comprises a light-emitting end sensor (34) and a light-receiving end sensor (35) arranged opposite to each other along the second direction, and the detection unit (3) further comprises a support frame, the light-emitting end sensor (34) and the light-receiving end sensor (35) are respectively movably connected to the support frame along the third direction, and the support frame is connected to the slider (32).

6. The slitting knife approach detection device according to claim 5, wherein: The support frame comprises a first support plate (36) and two second support plates (37); the first support plate (36) extends along the second direction; the two second support plates (37) extend along the third direction; the first support plate (36) is connected to the slider (32); the two second support plates (37) are respectively movably connected to the first support plate (36) along the second direction; the light-emitting end sensor (34) is movably connected to one of the second support plates (37) along the third direction; and the light-receiving end sensor (35) is movably connected to the other of the second support plates (37) along the third direction.

7. The slitting knife approach detection device according to any one of claims 1 to 6, wherein: The support unit (1) comprises a support platform (11) and a support wheel (12); a avoidance hole is provided on the support platform (11); the support wheel (12) is arranged at the avoidance hole; the support wheel (12) protrudes from the surface of the support platform (11); the tool holder (700) can move to a detection position of the support platform (11); and the rolling direction of the support wheel (12) matches the moving direction of the tool holder (700).

8. The slitting knife approach detection device according to claim 7, wherein: The support unit (1) further comprises at least one of the following: a guide roller (13), wherein the rotating shaft of the guide roller (13) is connected to the support platform (11), the guide roller (13) is capable of rolling contact with the side wall of the tool holder (700), and the rolling direction of the guide roller (13) matches the moving direction of the tool holder (700); Or, a stopper (15), wherein the stopper (15) is protrudingly arranged on the support platform (11), and the stopper (15) is arranged to prevent the tool holder (700) from detaching from the support platform (11).

9. The slitting knife approach detection device according to claim 8, wherein: The guide rollers (13) are provided in two groups, and a plurality of the guide rollers (13) in each group are arranged in sequence and at intervals along the moving direction of the tool holder (700). The two groups of guide rollers (13) are respectively arranged on both sides of the tool holder (700) along the moving direction.

10. The slitting knife approach detection device according to claim 7, wherein: The support unit (1) further comprises a trolley (14), and the support platform (11) is arranged on the trolley (14).

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