A slitter

Abstract

The application provides a slitting machine, comprising: a slitting device, capable of slitting a wide material tape into multiple narrow material tapes along a conveying direction; a transverse moving device, arranged downstream of the slitting device, capable of moving the narrow material tapes along a width direction to arrange adjacent two narrow material tapes at intervals; and a winding device, arranged downstream of the transverse moving device, capable of winding all the narrow material tapes on a same winding shaft. In this way, by arranging adjacent narrow material tapes at intervals, collision between adjacent narrow material tapes can be avoided, and adjacent narrow material tapes can be conveyed along a same path, so that the space for conveying the pole piece material tapes is greatly reduced; and winding of all the narrow material tapes can be realized by only one set of winding device, so that the cost is greatly reduced, the occupied space is reduced, and the overall size of the slitting machine is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pole piece processing, in particular to a slitting machine. BACKGROUND

[0002] With the continuous development of new energy technology, more and more products choose lithium batteries as their power source. The market demand for lithium batteries is also rising. The existing lithium battery processing equipment mainly has a lithium battery slitting machine, and the slitting of the pole piece in the lithium battery is mainly completed by the lithium battery slitting machine. After the pole piece is slitted, due to the fact that the roundness of the roller itself cannot completely guarantee high precision, if the adjacent two pole pieces pass through the same roller, the pole pieces may collide, causing the dressing to fall off and affecting the quality of the pole pieces. In the prior art, after the pole piece passes through the slitting knife, the adjacent two pole pieces are separated and are taken away, and are finally wound on at least two winding shafts. However, the form of taking away the pole pieces after slitting requires two sets of taking away and winding devices, which occupies a large space and has high production cost. SUMMARY

[0003] Therefore, the present application provides a slitting machine which occupies a small space and has low cost.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A slitting machine comprises:

[0006] a slitting device capable of slitting a wide material belt into a plurality of narrow material belts along a conveying direction;

[0007] a transverse moving device arranged downstream of the slitting device and capable of transversely moving the narrow material belts along a width direction so that adjacent two narrow material belts are arranged at intervals;

[0008] a winding device arranged downstream of the transverse moving device and capable of winding all the narrow material belts on a same winding shaft.

[0009] Optionally, the transverse moving device comprises:

[0010] a plurality of transverse moving rollers arranged at intervals and inclined with respect to the width direction of the narrow material belts;

[0011] wherein adjacent two transverse moving rollers are arranged on two sides of the narrow material belt respectively, so that the plurality of transverse moving rollers can convey and transversely move the narrow material belt.

[0012] Optionally, the transverse moving rollers are arranged in two, and the two transverse moving rollers satisfy a parallel condition.

[0013] Optionally, the conveying directions of the narrow material belts before and after passing through the transverse moving device satisfy a parallel condition.

[0014] Optionally, the transverse moving device comprises:

[0015] a transverse moving roller, which is arranged obliquely relative to the width direction of the narrow material strip; the narrow material strip is arranged around the outer periphery of the transverse moving roller, and the conveying directions of the narrow material strip before and after the transverse moving device satisfy the parallel condition;

[0016] wherein the included angle formed between the conveying direction of the narrow material strip and the axial direction of the transverse moving roller is β, the diameter of the transverse moving roller is d, the width of the narrow material strip is a, and a<πd·cosβ is satisfied.

[0017] Optionally, the length of the transverse moving roller is b, and b≥2a / sinβ+πd / tanβ-a / sinβ is satisfied.

[0018] Optionally, the included angle formed between the conveying direction of the narrow material strip and the axial direction of the transverse moving roller is 40-50 degrees.

[0019] Optionally, the transverse moving device comprises:

[0020] n transverse moving rollers, the axial directions of all the transverse moving rollers satisfy the parallel condition, and all the transverse moving rollers are arranged obliquely relative to the width direction of the narrow material strip; the narrow material strip is arranged around the outer periphery of all the transverse moving rollers, so that all the transverse moving rollers abut on the same side of the narrow material strip, and the conveying directions of the narrow material strip before and after the transverse moving device satisfy the parallel condition; n is a positive integer greater than 1;

[0021] wherein the distance between two adjacent transverse moving rollers is c, the included angle formed between the conveying direction of the narrow material strip and the axial direction of the transverse moving roller is β, the diameter of the transverse moving roller is d, the width of the narrow material strip is a, and a<πd·cosβ+nc·cosβ is satisfied.

[0022] Optionally, a plurality of transverse moving devices are arranged, and different narrow material strips can be transversely moved in the width direction respectively, so that two adjacent narrow material strips are arranged at intervals.

[0023] Optionally, the transverse moving device comprises:

[0024] an adjusting assembly, which can adjust the distance between two adjacent transverse moving rollers, and / or can adjust the oblique angle of the transverse moving roller relative to the width direction of the narrow material strip.

[0025] Optionally, the transverse moving device comprises;

[0026] a bearing seat and a swing frame, the swing frame is connected to the bearing seat through a hinge shaft;

[0027] The horizontal moving roller is arranged on the swing frame, and the adjusting assembly can drive the swing frame to rotate relative to the bearing seat to adjust the inclination angle of the horizontal moving roller relative to the width direction of the narrow material belt.

[0028] Optionally, comprising:

[0029] A plurality of material conveying branches are arranged downstream of the slitting device, and the plurality of narrow material belts are arranged one by one on the plurality of material conveying branches.

[0030] The plurality of material conveying branches comprise a first branch and at least one second branch, and the horizontal moving device is arranged with at least one and arranged one by one on the second branch to horizontally move the narrow material belt on the second branch.

[0031] Optionally, comprising:

[0032] A first detection device is arranged upstream of the slitting device and can detect the first surface of the wide material belt.

[0033] A second detection device is arranged downstream of the plurality of material conveying branches and can simultaneously detect the second surface of the plurality of narrow material belts.

[0034] A labeling device is arranged downstream of the second detection device and can label according to the detection result of the first detection device or the second detection device.

[0035] Optionally, comprising:

[0036] A branch roller is arranged downstream of the slitting device and upstream of the horizontal moving device.

[0037] A converging roller is arranged downstream of the horizontal moving device and upstream of the second detection device.

[0038] The plurality of material conveying branches are formed downstream of the branch roller and upstream of the converging roller.

[0039] Optionally, comprising:

[0040] A roll changing and tape connecting device is arranged upstream of the winding device.

[0041] The winding device is arranged with two, and the roll changing and tape connecting device can switch the conveying of the plurality of narrow material belts between the two winding devices.

[0042] Optionally, the slitting machine is arranged as a single cantilever structure.

[0043] The slitting machine provided by the application can make the narrow material belts after slitting move along the width direction through the transverse moving device, so that the adjacent narrow material belts are arranged at intervals, which can not only avoid collision between the adjacent narrow material belts, but also make the adjacent narrow material belts be conveyed along the same path, greatly reducing the space for conveying the pole piece material belts; and the winding device can wind all the narrow material belts after slitting on the same winding shaft, so that winding of all the narrow material belts can be realized through only one set of winding device, the cost is greatly reduced, the occupied space of the winding device can be reduced, and the overall volume of the slitting machine is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0045] Figure 1 A schematic diagram of the conveying of the slitting machine is shown for some embodiments;

[0046] Figure 2 A perspective view of the transverse moving device is shown for some embodiments;

[0047] Figure 3 A front view of the transverse moving device is shown for some embodiments;

[0048] Figure 4 A schematic diagram of single-roller circumferential transverse moving is shown for some embodiments;

[0049] Figure 5 A schematic diagram of the expansion of the narrow material belts in the Figure 4 along the circumferential direction of the transverse moving roller is shown;

[0050] Figure 6 A schematic diagram of transverse moving amount calculation of single-roller circumferential transverse moving is shown for some embodiments;

[0051] Figure 7 A schematic diagram of multi-roller circumferential transverse moving is shown for some embodiments;

[0052] Figure 8 A schematic diagram of transverse moving amount calculation of multi-roller circumferential transverse moving is shown for some embodiments;

[0053] Figure 9 A structural diagram of the transverse moving deviation correction module is shown for some embodiments;

[0054] Figure 10 A schematic diagram of the transverse moving of two narrow material belts is shown for some embodiments;

[0055] Figure 11A schematic view of the transverse movement of three narrow material strips for some embodiments.

[0056] In the figure: 1, mounting wallboard; 2, tape platform; 3, tension swing roller; 4, length measuring roller; 5, passing roller; 61, wide material strip; 62, narrow material strip; 7, traction roller; 8, labeling device; 9, deviation rectifying device; 101, first detection device; 102, second detection device; 11, slitting device; 121, splitting roller; 122, merging roller; 13, transverse movement device; 131, transverse movement roller; 132, adjusting assembly; 133, swing frame; 134, bearing seat; 135, hinged shaft; 136, bearing roller; 14, compression roller assembly; 15, winding device; 16, roll changing and tape connecting device. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0058] As shown in Figures 1-11 the present embodiment provides a slitting machine, which comprises a slitting device 11, a transverse movement device 13 and a winding device 15.

[0059] The slitting device 11 can slit the pole piece material strip along the conveying direction to slit the wide material strip 61 into multiple narrow material strips 62, and based on the structural difference of the slitting device 11, the wide material strip 61 can be slit into two or more narrow material strips 62. The deviation rectifying device 9 is arranged upstream of the slitting device 11 to rectify the wide material strip 61 before entering the slitting device 11, so as to ensure the uniformity and consistency of the slitting of the wide material strip 61 by the slitting device 11.

[0060] The transverse movement device 13 is arranged downstream of the slitting device 11 and can transversely move the narrow material strips 62 formed after slitting, so that the two adjacent narrow material strips 62 are arranged at intervals, wherein the transverse movement direction of the transverse movement device 13 to the narrow material strips 62 is the width direction of the narrow material strips 62 (i.e. the vertical direction of the conveying direction, and the width direction in the present embodiment is the width direction of the narrow material strips 62 upstream of the transverse movement device 13, i.e. Figure 3The horizontal direction in the figure), by moving the narrow material belt 62 to make a certain distance between the adjacent two narrow material belts 62, so as to avoid the collision between the adjacent narrow material belts 62 in the conveying process of the narrow material belt 62, and to improve the quality of the pole piece. Here, the horizontal moving device 13 can move all the narrow material belts 62 formed after cutting, or part of the narrow material belts 62, so that after the horizontal moving device 13 moves the narrow material belt 62, any two adjacent narrow material belts 62 are spaced apart.

[0061] The winding device 15 is arranged downstream of the horizontal moving device 13, and can wind all the narrow material belts 62 formed after cutting on the same winding shaft. Since any two adjacent narrow material belts 62 are spaced apart after the horizontal moving operation of the horizontal moving device 13, when the spacing distance of the adjacent narrow material belts 62 is sufficient to avoid the adjacent winding drum, the winding device 15 can wind all the narrow material belts 62, and the adjacent two narrow material belts 62 will not interfere with each other. In order to meet the winding requirement, only the corresponding lengthening of the winding shaft is needed. In this way, all the narrow material belts 62 after cutting are wound on the same winding shaft by the winding device 15, and the winding of all the narrow material belts 62 can be realized by one set of winding device 15. Compared with the traditional cutting machine, the present scheme can reduce the use of one set of winding device 15, greatly reduce the cost, and reduce the occupied space of the winding device 15, thereby reducing the overall size of the cutting machine.

[0062] It should be noted that the cutting machine is provided with a conveying line for conveying the pole piece material belt (wide material belt 61 before cutting, narrow material belt 62 after cutting), and specifically, the cutting machine is provided with a belt receiving platform 2, a tension roller 3, a length measuring roller 4, a passing roller 5, a traction roller 7 and the like. The conveying of the pole piece material belt is realized by the rollers to form the conveying line. The cutting device 11, the horizontal moving device 13 and the winding device 15 are all arranged on the conveying line to realize the cutting, horizontal moving and winding of the material belt. The description of "upstream" and "downstream" in this article is based on the conveying direction of the conveying line, that is, on the conveying line, the pole piece material belt first passes through the "upstream" of the conveying line and then passes through the "downstream" of the conveying line.

[0063] In this way, the narrow material belt 62 after cutting is moved in the width direction by the horizontal moving device 13 to make the adjacent narrow material belts 62 spaced apart, which can avoid the collision between the adjacent narrow material belts 62 and make the adjacent narrow material belts 62 conveyed along the same path, greatly reducing the space of the pole piece material belt. Moreover, all the narrow material belts 62 after cutting are wound on the same winding shaft by the winding device 15, which can realize the winding of all the narrow material belts 62 by only one set of winding device 15, greatly reduce the cost, and reduce the occupied space of the winding device 15, thereby reducing the overall size of the cutting machine.

[0064] In some embodiments, the traversing device 13 includes a plurality of traversing rollers 131. Specifically, the traversing rollers 131 may be two, three, or four. The traversing rollers 131 are positioned relative to the width direction of the narrow strip 62 (in this embodiment, the width direction specifically refers to the width direction of the narrow strip 62 upstream of the traversing device 13, i.e.) Figure 3 The narrow strip 62 is inclined relative to the width direction of the transverse roller 131 so that after being conveyed by the transverse roller 131, its conveying direction will shift along its width direction. The greater the inclination angle of the transverse roller 131 relative to the width direction of the narrow strip 62, the greater the shift angle of the narrow strip 62 after passing through the transverse roller 131. Furthermore, adjacent transverse rollers 131 are spaced apart, so that the narrow strip 62 shifts a certain distance between adjacent transverse rollers 131. The greater the distance between adjacent transverse rollers 131, the greater the shift of the narrow strip 62 after passing through those adjacent transverse rollers 131. This arrangement, through the design of multiple transverse rollers, allows for the transverse movement of the narrow strip, resulting in a simple, stable, and reliable structure.

[0065] Furthermore, two adjacent transverse rollers 131 are respectively arranged on both sides of the narrow strip 62 so that the narrow strip 62 is conveyed in a Z-shape on the transverse device 13. In this way, during the conveying process of the narrow strip 62 by the transverse device 13, the two adjacent transverse rollers 131 can shift the conveying direction of the narrow strip 62 along the opposite width direction, so that the conveying direction of the narrow strip 62 before and after passing the transverse device 13 is perpendicular to the width direction, and the conveying surface of the strip before and after passing the transverse device 13 is perpendicular to the same plane, which is beneficial to the stability and consistency of subsequent conveying and winding.

[0066] Of course, a receiving roller 136 (which has the same function as the passing roller 5, can only change the conveying direction and will not change the width direction of the material strip) can be set between two adjacent transverse moving devices 13. The receiving roller 136 extends along the width direction of the narrow material strip and does not transverse the narrow material strip, so that the width direction of the narrow material strip remains unchanged before and after passing the receiving roller 136.

[0067] Specifically, two transverse rollers 131 are provided, and the two transverse rollers 131 satisfy the parallel condition. During the conveying process of the narrow strip 62 by the transverse device 13, the two transverse rollers 131 can cause the narrow strip 62 to deflect in opposite width directions, and the deflection angles are consistent. Thus, after the narrow strip 62 passes through the two parallel transverse rollers 131, it only undergoes transverse movement in the width direction, without any deviation in the conveying direction. In this way, using two transverse rollers 131 that satisfy the parallel condition results in a simple structure and facilitates the adjustment of the transverse movement of the narrow strip 62.

[0068] In this case, the conveying direction of the narrow strip 62 before and after passing through the transverse transfer device 13 meets the parallel condition. In this way, when the number of transverse transfer rollers 131 is small, the narrow strip 62 and the transverse transfer rollers 131 can have a large contact area, thereby improving the conveying and transverse transfer effect of the transverse transfer rollers 131 on the narrow strip 62.

[0069] It should be noted that the "parallel condition" in this article means that the extension directions of one object are parallel to the extension directions of the other object, but it is not limited to absolute parallelism. For example, the extension directions of one object may be nearly parallel to the extension directions of the other object, which is defined here as an angle of less than 5 degrees. The "perpendicular condition" in this article means that the extension directions of one object are perpendicular to the extension directions of the other object, but it is not limited to absolute perpendicularity. For example, the extension directions of one object may be nearly perpendicular to the extension directions of the other object, which is defined here as an angle of less than 95 degrees and greater than 85 degrees.

[0070] In some embodiments, such as Figures 4-6 As shown, the transverse transfer device 13 includes a transverse transfer roller 131, which is a single-roller transverse transfer configuration. A narrow material strip 62 is spirally wound around the outer circumference of the transverse transfer roller 131. The narrow material strip 62 completes one revolution (360 degrees) around the transverse transfer roller 131. The conveying directions of the narrow material strip 62 before and after passing through the transverse transfer device 132 are parallel, so that the path traversed by the narrow material strip 62 on the transverse transfer roller 131 is a spiral. The spiral angle β is the angle formed between the conveying direction of the narrow material strip 62 (defined here as the conveying direction before passing the transverse transfer roller) and the axial direction of the transverse transfer roller 131. (Reference) Figure 5 Since the path of the narrow strip 62 on the transverse roller 131 is a spiral, the narrow strip 62 rotates 360 degrees to form a complete spiral. When the path is unfolded on a plane, it forms a right triangle with the hypotenuse being the path length of the narrow strip 62, the base being the circumference πd of the transverse roller 131, and the side being the lead P of the spiral. From the geometric relationship, given the roller diameter d and the spiral angle β of the transverse roller 131, we can obtain the lead P = πd / tanβ. From the geometric relationship, we can obtain the transverse displacement L = P·sinβ. Furthermore, we can derive the relationship between the transverse displacement, the included angle, and the roller diameter: L = πd·cosβ. In this relationship, the roller diameter d cannot be changed after the transverse roller 131 is manufactured. Therefore, the transverse displacement L can be adjusted by changing the included angle β between the conveying direction of the narrow strip 62 and the axis of the transverse roller 131. According to the formula, the smaller the included angle β, the larger the transverse displacement L. The minimum lateral displacement L of this structure must be greater than the width a of the narrow strip 62 to prevent the narrow strip 62 from overlapping and colliding after one revolution around the lateral roller 131. This requires a < L, i.e., a < πd·cosβ. Thus, the single-roller spiral lateral displacement method is simple in structure and easy to design and install.

[0071] refer to Figure 6In use, the length b of the transverse roller 131 is greater than the range of the narrow material strip 62 winding, and from the geometric relationship, b≥b1+b2+b3, b1=b3=a / sinβ, b2=(L-a) / sinβ, thus b≥2a / sinβ+πd / tanβ-a / sinβ. According to the relationship, when β=0, the length b of the transverse roller 131 is infinite, and when β is close to 0 or a very small value, the value of b is also very large. In actual use, when the angle between the axial direction of the transverse roller 131 and the conveying direction of the narrow material strip 62 exceeds 45 degrees, the greater the angle, the greater the length increase rate of the transverse roller 131 than the transverse amount increase rate; and when the angle between the conveying direction of the narrow material strip 62 and the axial direction of the transverse roller 131 is less than 45 degrees, the smaller the angle, the greater the transverse amount decrease rate than the length decrease rate of the transverse roller 131. Therefore, the angle β between the conveying direction of the narrow material strip 62 and the axial direction of the transverse roller 131 is 40-50 degrees, and preferably 45 degrees.

[0072] In other embodiments, the transverse moving device 13 includes n (n is a positive integer greater than 1) transverse rollers 131, the axial directions of all the transverse rollers 131 satisfy the parallel condition, and are arranged obliquely relative to the width direction of the narrow material strip 62; the narrow material strip 62 is arranged around the outer periphery of all the transverse rollers 131, and here the narrow material strip 62 spirally winds around the whole formed by all the transverse rollers 131 for one turn (360 degrees), so that all the transverse rollers 131 abut on the same side of the narrow material strip 62 (i.e. all the transverse rollers 131 abut on the inner peripheral surface of the narrow material strip 62 spirally wound for one turn), and the conveying directions of the narrow material strip 62 before and after passing through the transverse moving device 13 satisfy the parallel condition. As known from the above, the greater the diameter d of the transverse roller 131, the greater the transverse amount L, and the maximum transverse amount does not exceed πd (when β=0, Lmax=πd). When the diameter of the transverse roller 131 is greater, the cost is also higher, and the transverse amount obtained is not cost-effective compared with the cost increase. Here, by adopting the multi-roller winding transverse moving mode, a plurality of transverse rollers 131 with smaller diameters can be used to complete the transverse moving operation, which is beneficial to saving cost.

[0073] Here, the distance between the adjacent two transverse rollers 131 is c, the angle between the conveying direction of the narrow material strip 62 (here the conveying direction is defined as the conveying direction before passing through the transverse roller) and the axial direction of the transverse roller 131 is β, the diameter of the transverse roller 131 is d, and the width of the narrow material strip 62 is a, and a<πd·cosβ+nc·cosβ. In this way, it can be prevented that the narrow material strip 62 spirally wound around all the transverse rollers 131 for one turn overlaps and collides.

[0074] The following will be described taking n=2 as an example, as shown in FIG. 4. Figures 7-8As shown, the narrow strip 62 is transversely moved around the included angle β between the two transverse rollers 131 with a roller diameter d and a roller distance c, and the transverse moving amount is L. Taking the lower edge of the narrow strip 62 as an example, the narrow strip 62 starts to contact the right transverse roller 131 at point A and enters the spiral winding phase, and ends the spiral part at point B, and the spiral line is formed by the narrow strip 62 winding 180 degrees on the right transverse roller 131. Subsequently, the narrow strip 62 starts to separate from the right transverse roller 131 at point B, starts to move to the left transverse roller 131, and contacts the left transverse roller 131 at point C. The BC segment is a straight line segment because the narrow strip 62 moves linearly along the tangent direction of point B without any interference of the roller. After the narrow strip 62 contacts the left transverse roller 131 at point C, it starts to enter the second spiral winding phase along the left transverse roller 131, and ends the spiral at point D, and the narrow strip 62 starts to separate from the left transverse roller 131, and the transverse moving process ends. The total transverse moving amount L of the narrow strip 62 is L1 (the transverse moving amount of the spiral line part) + L2 (the transverse moving amount of the straight line segment BC). Since the left transverse roller 131 and the right transverse roller 131 are parallel, the spiral line is symmetrical with the spiral line , and after connecting point B and point C, is a single-pitch complete spiral line with a winding angle of 360 degrees. Therefore, the transverse moving amount L1 of the spiral line part of the narrow strip 62 can be obtained by the above single-roller transverse moving method, and L1 = πd·cosβ. Figure 7 The moving path of the lower edge of the narrow strip 62 and the left generatrix of the left transverse roller 131 are abstracted into the image shown in Figure 8 The narrow strip 62 intersects with the generatrix of the left transverse roller 131 at point E, and the moving path of the narrow strip 62 is a straight line EA + a spiral line The two ends of the line segment BC are extended to intersect with the generatrix of the left transverse roller 131 at point G, and intersect with the extension line of EA at point F. The narrow strip 62 winds at the spiral line with a winding angle of 180 degrees. Due to the geometric characteristics, the spiral line As for the symmetry of FK to the perpendicular line of F point to bus EG, that is, △FGE is an isosceles triangle, △FGK and △FEK are congruent triangles, and ∠FGK = ∠FEK = β. A straight line BH is drawn through point B and parallel to straight line EG, and a vertical line CH is drawn through point C to straight line BH, intersecting at point H, and the length of line segment CH is the distance c between the transverse rollers 131. Since BH is parallel to EG, the internal alternate angles are equal, that is, ∠CBH = ∠FGK = β, and thus: sin ∠CBH = CH / CB, that is, CB = CH / sin ∠CBH = c / sin β. A horizontal line CJ is drawn through point C, and a vertical line BJ is drawn through point B, intersecting at point J, and the length of line segment BJ is the required transverse displacement L2. As known from the above conclusion that △FGK and △FEK are congruent triangles, ∠EFK = ∠GFK = π / 2-β, and since CJ and EF are both horizontal lines, CJ∥EF, the internal alternate angle ∠JCB = ∠EFG = ∠EFK + ∠GFK = π-2β, according to sin ∠JCB = BJ / BC, BJ = BC·sin ∠JCB = c / sin β·sin (π-2β), and by the transformation of trigonometric functions, sin (π-2β) = sin 2β, that is, BJ = c·sin 2β / sin β; and by the transformation of trigonometric functions, sin 2β / sin β = 2cos β, that is, BJ = c·2cos β. Therefore, the transverse displacement L2 = 2c·cos β, and thus the total transverse displacement L = L1+L2 = πd·cos β+2c·cos β.

[0075] According to the above rule, the number of transverse rollers 131 is n, the diameter of each transverse roller 131 is d, and the distance between any two adjacent transverse rollers 131 is c, and the total transverse displacement L = πd·cos β+nc·cos β. In order to prevent the narrow material belt 62 from overlapping and colliding after winding around all the transverse rollers 131 once, L > a, that is, a < πd·cos β+nc·cos β. In addition, in order to prevent the narrow material belt 62 from overlapping and colliding, the two adjacent transverse rollers 131 can be arranged on the two sides of the narrow material belt 62 respectively, so that the narrow material belt 62 is transported in a Z shape.

[0076] The above structure can realize the transverse displacement of a single narrow material belt 62. If multiple narrow material belts 62 are transversely displaced, multiple transverse displacement devices 13 are provided, and different narrow material belts 62 can be transversely displaced in the width direction respectively, so that the two adjacent narrow material belts 62 are arranged at intervals.

[0077] It should be noted that the transverse displacement device 13 can be arranged as a transverse displacement and correction module as shown in Figure 9 , which combines different supporting rollers 136 and transverse rollers 131 to make the narrow material belt 62 wind different paths and produce transverse displacement. For example, as shown in Figure 10 , two transverse displacement devices 13 are provided, and two narrow material belts 62 can be transversely displaced respectively, as shown in Figure 11As shown, the transverse moving device 13 is provided with two, so that three narrow material belts 62 can be spaced. This form is only a good case for realizing the transverse movement of multiple narrow material belts 62, and other forms using this principle are within the scope of the patent.

[0078] The transverse moving device 13 includes an adjusting assembly 132 capable of adjusting the distance between the two adjacent transverse moving rollers 131 and / or adjusting the inclination angle of the transverse moving rollers 131 relative to the width direction of the narrow material belt 62. Specifically, the adjusting assembly 132 can have two components, one capable of adjusting the distance between the two adjacent transverse moving rollers 131, and the other capable of adjusting the inclination angle of the transverse moving rollers 131 relative to the width direction of the narrow material belt 62. Of course, the adjusting assembly 132 can also have one component capable of adjusting the distance between the two adjacent transverse moving rollers 131 or adjusting the inclination angle of the transverse moving rollers 131 relative to the width direction of the narrow material belt 62.

[0079] As shown in Figure 2 , 3 The transverse moving device 13 includes a carrier seat 134 fixedly provided as the reference position of the transverse moving device 13 and a swing frame 133 connected to the carrier seat 134 through a hinge shaft 135 so that the swing frame 133 can rotate along the axis of the hinge shaft 135 relative to the carrier seat 134. Specifically, the conveying surface in front of the transverse moving device 13 through which the narrow material belt 62 passes satisfies the vertical condition with the axis of the hinge shaft 135, so that the swing frame 133 can change the included angle relative to the width direction of the narrow material belt 62 when it rotates along the axis of the hinge shaft 135.

[0080] Among them, the transverse moving rollers 131 are arranged on the swing frame 133, and the adjusting assembly 132 is arranged between the swing frame 133 and the carrier seat 134, which can drive the swing frame 133 to rotate relative to the carrier seat 134 through the adjusting assembly 132 to adjust the inclination angle of the transverse moving rollers 131 relative to the width direction of the narrow material belt 62. Specifically, one end of the swing frame 133 is connected to the carrier seat 134 through the hinge shaft 135, and the other end is connected to the carrier seat 134 through the adjusting assembly 132, which can be a device capable of adjusting the displacement amount such as a hydraulic cylinder, an electric cylinder, an air cylinder or a mechanical lead screw. In this way, the adjusting assembly 132 only needs to control the rotation of the swing frame 133 relative to the carrier seat 134 to adjust the inclination angle of the transverse moving rollers 131 relative to the width direction of the narrow material belt 62, which is convenient to operate and has good consistency and stability.

[0081] In some embodiments, a plurality of material conveying branches are arranged downstream of the slitting device 11, and the plurality of narrow material strips 62 are arranged one-to-one on the plurality of material conveying branches to realize independent conveying of the plurality of narrow material strips 62 through the plurality of material conveying branches. Specifically, a plurality of groups of branch rollers are arranged downstream of the slitting device 11, and each group of branch rollers can convey one narrow material strip 62, so that each group of branch rollers cooperates to form one material conveying branch.

[0082] The plurality of material conveying branches include a first branch and a second branch. In the present scheme, one first branch and at least one second branch are arranged (when the number of material conveying branches is two, one second branch is arranged; when the number of material conveying branches is three or more, two or more second branches are arranged), and at least one transverse moving device 13 equal to the number of second branches is arranged one-to-one on the second branches and can transversely move the narrow material strips 62 on the second branches. Since the transverse moving device 13 is arranged only on the second branches and not on the first branch, the narrow material strips 62 on the second branches can be transversely moved based on the narrow material strips 62 on the first branch during transverse movement of the narrow material strips 62 by the transverse moving device 13. In this way, the transverse moving operation does not need to be performed on all narrow material strips 62, which is beneficial for reducing the number of transverse moving devices 13 used and simplifying the structure and reducing costs, and is also beneficial for accurately controlling the transverse movement amount of the narrow material strips 62.

[0083] Of course, in other schemes, at least one first branch and at least one second branch can be arranged and used to convey two adjacent narrow material strips 62, respectively, i.e., the first branch and the second branch are arranged alternately and convey the plurality of narrow material strips 62, at least one transverse moving device 13 equal to the number of second branches is arranged one-to-one on the second branches and can transversely move the narrow material strips 62 on the second branches. In this way, during transverse movement of the narrow material strips 62 by the transverse moving device 13, the narrow material strips 62 on the adjacent first branches can not be transversely moved if the spacing between the narrow material strips 62 on the adjacent first branches meets the requirements, and only the narrow material strips 62 on the second branches are transversely moved, thereby reducing the number of transverse moving devices 13 used.

[0084] The slitting machine comprises a first detection device 101, a second detection device 102 and a labeling device 8. The first detection device 101 is arranged upstream of the slitting device 11 and can detect the first surface of the wide material tape 61. The second detection device 102 is arranged downstream of the plurality of material tape conveying branches and can simultaneously detect the second surfaces of the plurality of narrow material tapes 62. Specifically, the first detection device 101 and the second detection device 102 are CCD cameras for size and defect detection of the pole piece material tape. The wide material tape 61 and the narrow material tape 62 each have a first surface and a second surface. The first surface of the wide material tape 61 and the first surface of the narrow material tape 62 are the same, and the second surface of the wide material tape 61 and the second surface of the narrow material tape 62 are the same. Through the design of the first detection device 101 and the second detection device 102, the two surfaces of the pole piece material tape (the wide material tape 61 and the narrow material tape 62) can be detected respectively. Moreover, the second detection device 102 can simultaneously detect a plurality of narrow material tapes 62, which only needs to increase the detection range of the second detection device 102, without the need for separate detection of a plurality of narrow material tapes 62. Compared with the traditional structure, at least one set of detection device (CCD camera) can be saved, which is beneficial to simplify the structure and save costs.

[0085] The labeling device 8 is arranged downstream of the second detection device 102 and can perform labeling operation according to the detection results of the first detection device 101 or the second detection device 102 to distinguish the corresponding good products and defective products.

[0086] As shown in Figure 1 , a branch roller 121 is arranged downstream of the slitting device 11. The plurality of narrow material tapes 62 after slitting pass through the branch roller 121 and are conveyed along the plurality of material tape conveying branches respectively. A converging roller 122 is arranged downstream of the branch roller 121, i.e. downstream of the transverse movement device (downstream of the plurality of material tape conveying branches), so that the plurality of material tape conveying branches are arranged upstream of the converging roller 122. The narrow material tapes 62 on the plurality of material tape conveying branches converge to the same tape conveying path at the position of the converging roller 122. In this way, through the design of the branch roller 121 and the converging roller 122, the plurality of narrow material tapes 62 after slitting can be conveyed respectively, and after the transverse movement device 13 performs transverse movement operation on the narrow material tapes 62, the plurality of narrow material tapes 62 converge to the same tape conveying path, which is beneficial to avoid collision between adjacent material tapes and reduce the tape conveying space. Moreover, the converging roller is arranged upstream of the second detection device, so that the plurality of narrow material tapes converge through the converging roller and are then detected by the second detection device, which is beneficial to realize simultaneous detection of the plurality of narrow material tapes by one second detection device.

[0087] The slitting machine comprises a roll changing and tape connecting device 16, the winding devices 15 are provided with two (of course, other schemes can also be provided with multiple, such as provided with three or four), and are located downstream of the roll changing and tape connecting device 16, that is, the roll changing and tape connecting device 16 is arranged upstream of the winding devices 15, the roll changing and tape connecting device 16 can switch the conveying of multiple narrow material tapes 62 between the two winding devices 15, and during operation, after one of the winding devices 15 is wound up, the roll changing and tape connecting device 16 switches the conveying of the multiple narrow material tapes 62 on the same tape path to the other winding device 15, so that the other winding device 15 simultaneously winds up the multiple narrow material tapes 62 on the same tape path. In this way, through the arrangement of the roll changing and tape connecting device 16, continuous winding without stopping can be realized, which is beneficial to improving the working efficiency of the slitting machine.

[0088] It should be noted that when the multiple narrow material tapes are conveyed on the same tape path, the multiple narrow material tapes are not arranged in layers, but are arranged in a spaced manner in the width direction of the narrow material tapes, and in the winding process, the multiple spaced narrow material tapes can be wound on different axial positions of the same winding roller.

[0089] In order to ensure the tightness of the winding of the winding device 15, a pressure roller assembly 14 is arranged on the outer periphery of the winding device 15, and in the winding process of the winding device 15, the pressure roller assembly 14 presses the narrow material tape 62 to improve the tightness of the winding of the narrow material tape 62 on the winding shaft.

[0090] In the scheme, the slitting machine is arranged in a single cantilever structure, the slitting machine is provided with a mounting wall plate 1, and each functional component (such as the slitting device 11, the transverse moving device 13, the winding device 15, and various conveying rollers) on the slitting machine is arranged on one side of the mounting wall plate 1 and connected to the mounting wall plate 1 in a single cantilever manner, which is simple in structure and is beneficial to the regulation and control of each functional component.

[0091] The basic principles of the application are described above in combination with specific embodiments, but it should be noted that the advantages, advantages, effects and the like mentioned in the application are only examples and are not limited, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the application. In addition, the above specific details are only for the purpose of example and understanding, and are not limited to the above specific details, and the application must be realized by using the above specific details.

[0092] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration must be as shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have", and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably, unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0093] It should also be noted that in the devices, apparatuses and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0094] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects without departing from the scope of the present application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0095] It should be understood that the adjectives "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for more clearly describing the technical solutions, and cannot be used to limit the protection scope of the present application.

[0096] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A slitter, characterized in that, The application relates to a slitting device, a transverse moving device, a winding device, a roll changing and tape connecting device, and a first detection device, a second detection device and a labeling device. The slitting device can slit a wide material tape into multiple narrow material tapes along a conveying direction. The transverse moving device is arranged downstream of the slitting device and can move the narrow material tapes in a width direction to arrange two adjacent narrow material tapes apart. The transverse moving device comprises n transverse moving rollers, the axial directions of all the transverse moving rollers satisfy a parallel condition, and the transverse moving rollers are arranged to be inclined relative to the width direction of the narrow material tapes. The narrow material tapes are arranged around the outer circumferences of all the transverse moving rollers, so that all the transverse moving rollers abut on the same side of the narrow material tapes, and the conveying directions of the narrow material tapes before and after passing through the transverse moving device satisfy a parallel condition. n is a positive integer greater than 1. The distance between two adjacent transverse moving rollers is c, the included angle between the conveying direction of the narrow material tapes and the axial direction of the transverse moving rollers is beta, the diameter of the transverse moving rollers is d, the width of the narrow material tapes is a, and a < pi d*cos beta + nc*cos beta.

2. The slitter according to claim 1, characterized in that, The winding device is arranged downstream of the transverse moving device and can wind all the narrow material tapes on the same winding shaft.

3. The slitter according to claim 2, characterized in that, The roll changing and tape connecting device is arranged upstream of the winding device. The winding device is provided with two winding devices, and the roll changing and tape connecting device can switch the conveying of the multiple narrow material tapes between the two winding devices.

4. The slitter according to claim 3, characterized in that, The transverse moving device is provided with multiple transverse moving devices and can move different narrow material tapes in a width direction to arrange two adjacent narrow material tapes apart. The transverse moving device comprises: An adjusting assembly can adjust the distance between two adjacent transverse moving rollers and / or can adjust the inclination angle of the transverse moving rollers relative to the width direction of the narrow material tapes.

5. The slitter according to claim 1, characterized in that, The transverse moving device comprises: A bearing seat and a swing frame are connected to the bearing seat through a hinge shaft. The transverse moving rollers are arranged on the swing frame, and the adjusting assembly can drive the swing frame to rotate relative to the bearing seat to adjust the inclination angle of the transverse moving rollers relative to the width direction of the narrow material tapes.

6. The slitter according to claim 5, characterized in that, The application relates to a slitting device, a transverse moving device, a winding device, a roll changing and tape connecting device, and a first detection device, a second detection device and a labeling device. Multiple material conveying branches are arranged downstream of the slitting device, and the multiple narrow material tapes are arranged on the multiple material conveying branches one by one. The multiple material conveying branches comprise a first branch and at least one second branch, and the transverse moving device is arranged on the second branch one by one to move the narrow material tapes on the second branch. The application relates to a slitting device, a transverse moving device, a winding device, a roll changing and tape connecting device, and a first detection device, a second detection device and a labeling device.

7. The slitter according to claim 6, characterized in that, A first detection device is arranged upstream of the slitting device and can detect the first surface of the wide material tape. A second detection device is arranged downstream of the multiple material conveying branches and can simultaneously detect the second surfaces of the multiple narrow material tapes. A labeling device is arranged downstream of the second detection device and can label according to the detection results of the first detection device or the second detection device. A branch roller is arranged downstream of the slitting device and upstream of the transverse moving device. A converging roller is arranged downstream of the transverse moving device and upstream of the second detection device. The multiple material conveying branches are formed downstream of the branch roller and upstream of the converging roller.

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