Insulating strip feeding mechanism

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to an insulating sheet feeding mechanism which comprises two groups of trough main bodies, two groups of mounting plates and two groups of supporting sheets, the two groups of trough main bodies are symmetrically distributed, and an accommodating space matched with the shape of an insulating sheet is formed between the two groups of trough main bodies; the two sets of mounting plates are detachably connected with the two sets of trough bodies correspondingly, and the mounting plates can be connected with a machine table. The two sets of supporting pieces are distributed in the first direction at intervals, the two sides of each supporting piece are connected with the two sets of trough bodies respectively, and the two sets of supporting pieces can both support the edge of an insulating piece. Compared with the prior art, the accommodating space of the insulating sheet trough is designed to be matched with the shape of the insulating sheet, different insulating sheet troughs are designed according to different models of insulating sheets, and the corresponding insulating sheet trough is replaced according to the model of a battery in the battery manufacturing process, so that the accuracy of battery surface mounting is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery manufacturing technical field especially relates to a kind of insulating sheet feeding mechanism. BACKGROUND

[0002] Battery needs to paste a insulating sheet on top after being wrapped in blue film, mainly to improve the overall insulation performance of battery, prevent blue film from warping and increase the overall aesthetics of battery;To ensure the accuracy of battery patching, batch of insulating sheets are placed in trough in the industry first, then the insulating sheet is sucked out from the trough by mechanical hand or air cylinder through vacuum suction, and then pasted on the top of battery.

[0003] The existing trough is composed of four movable square columns, such trough design is simple, without dimensional tolerance requirement, when manufacturing different models of battery, the spacing between four square columns is adjusted to adapt to the shape of insulating sheet;But it is found in actual use that it is very difficult to adjust four square columns to completely match the shape of insulating sheet, and since the spacing between four square columns is adjusted and locked by screw, the screw will loosen due to machine vibration during battery manufacturing process, so that the spacing between four square columns changes, at this time, the spacing between four square columns needs to be adjusted and locked again, which is time-consuming and laborious. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned technical problem, provides a kind of insulating sheet feeding mechanism, and the accommodating space of this kind of insulating sheet trough is designed to match the shape of insulating sheet, different insulating sheet troughs are designed according to different models of insulating sheet, and the corresponding insulating sheet trough is replaced according to the model of battery during battery manufacturing process, to ensure the accuracy of battery patching.

[0005] Therefore, the utility model provides a kind of insulating sheet feeding mechanism, comprising:

[0006] Two groups of trough main bodies, two groups of trough main bodies are symmetrically distributed, and accommodating space matching the shape of insulating sheet is formed between two groups of trough main bodies;

[0007] Two groups of mounting plates, two groups of mounting plates are respectively detachably connected with two groups of trough main bodies, and mounting plate can be connected with machine table;

[0008] Two groups of supporting pieces, two groups of supporting pieces are spaced apart in the first direction, and the two sides of supporting piece are respectively connected with two groups of trough main bodies, and two groups of supporting pieces can hold the edge of insulating sheet.

[0009] In the technical solution, the two groups of material tank bodies, the two groups of mounting plates and the two groups of supporting pieces are fixed in position to form an insulation piece material tank with a fixed containing space, when the insulation pieces are stored in the insulation piece material tank, the side walls of the insulation pieces can be attached to the side walls of the insulation piece material tank to ensure stable storage of the insulation pieces, insulation piece material tanks of different sizes are designed according to different models of insulation pieces, when different models of batteries are manufactured, the insulation piece material tank of the corresponding size can be directly installed on the machine table, and then the insulation pieces can be sucked out of the insulation piece material tank by a mechanical hand or a cylinder through a vacuum suction mode and then attached to the top of the battery.

[0010] In the above technical solution, further, the mounting plate and the material tank body are connected through a threaded fastener.

[0011] In the above technical solution, further, the mounting plate is provided with a first mounting hole, the material tank body is provided with a first threaded hole opposite to the first mounting hole in position, and the threaded end of the threaded fastener is threadedly connected with the first threaded hole after passing through the first mounting hole.

[0012] In the above technical solution, further, the supporting piece and the two groups of material tank bodies are connected through a threaded fastener.

[0013] In the above technical solution, further, the two ends of the supporting piece are provided with locking blocks, the locking blocks are provided with second mounting holes, the surfaces of the two groups of material tank bodies close to the locking blocks are provided with second threaded holes, the second threaded holes are opposite to the second mounting holes in position, and the threaded end of the threaded fastener is threadedly connected with the second threaded hole after passing through the second mounting hole.

[0014] In the above technical solution, further, the width of the second mounting hole in the first direction is greater than the diameter of the second threaded hole.

[0015] In the above technical solution, further, the insulation piece material tank further comprises two groups of reference blocks, two groups of adjusting blocks and two groups of adjusting pieces, the two groups of adjusting blocks are respectively arranged on the two groups of supporting pieces, the two groups of reference blocks are spaced apart in the first direction, the positions of the two groups of reference blocks in the first direction are fixed, and the two groups of adjusting pieces can respectively adjust the distance between the two groups of adjusting blocks and the two groups of reference blocks.

[0016] In the above technical solution, further, the adjusting piece comprises an adjusting screw, one end of the adjusting screw is rotationally connected with the adjusting block, the reference block is provided with a third threaded hole, and the adjusting screw is threadedly connected with the third threaded hole.

[0017] In the above technical solution, further, the side of the material tank body close to the supporting piece is provided with a positioning groove, and the end of the supporting piece can be clamped into the positioning groove.

[0018] In the above technical solution, further, the mounting plate is provided with a reinforcing rib plate, and the reinforcing rib plate is fixed in position in the first direction.

[0019] One of the above technical solutions has the following beneficial effects:

[0020] 1. The feeding mechanism is composed of two groups of trough bodies, which jointly define a containing space for the insulating sheet, and the containing space is designed to have a shape matching the shape of the insulating sheet. Different combinations of trough bodies are selected according to the specifications of different insulating sheets. The trough bodies are detachably connected to the mounting plate connected to the machine table. Compared with the scheme of limiting the position of the insulating sheet by adjusting the positions of multiple positioning columns, this technical solution not only has a faster change speed, but also effectively ensures the position of the insulating sheet in the feeding mechanism, avoiding the influence of the position deviation of the insulating sheet on the patching effect. In addition, the two sides of the supporting piece of the feeding mechanism are connected to the trough bodies, which can further strengthen the structural strength of the overall feeding mechanism and prevent the two groups of trough bodies from moving closer to each other due to machine table vibration and other reasons. The supporting piece also provides a supporting effect to support the insulating sheet in the feeding mechanism.

[0021] 2. By providing a locking block on the supporting piece, a second mounting hole is provided on the locking block, a second threaded hole is provided on the trough body, the width of the second mounting hole in the first direction is greater than the diameter of the second threaded hole, and two groups of reference blocks, two groups of adjusting blocks and two groups of adjusting pieces are provided to cooperate. In this way, the position of the supporting piece can be adjusted along the first direction on the two groups of trough bodies, thereby controlling the range of contact between the supporting piece and the insulating sheet.

[0022] 3. By providing a positioning groove on the trough body for the supporting piece to be positioned, the assembly between the supporting piece and the trough body is facilitated, the contact area between the supporting piece and the trough body is increased, and the overall structural stability of the feeding mechanism is strengthened. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 It is a schematic view of the insulating sheet trough of the present application installed on a machine table.

[0025] Figure 2 It is a schematic view of the insulating sheet trough of the present application installed on a machine table.

[0026] Figure 3 It is a schematic view of the front side structure of the trough body in the present application.

[0027] Figure 4 It is rear side structure schematic view of the trough main body in the utility model.

[0028] Figure 5 It is structure schematic view of the mounting plate in the utility model.

[0029] Figure 6 It is structure schematic view of the supporting piece in the utility model.

[0030] Figure 7 It is structure schematic view of the reference block in the utility model.

[0031] Marked in the figure is:

[0032] 100, insulating sheet trough;200, insulating sheet;300, machine table;1, trough main body;101, first threaded hole;102, second threaded hole;103, positioning groove;2, mounting plate;201, first mounting hole;3, supporting piece;4, locking block;401, second mounting hole;5, reference block;501, third threaded hole;6, adjusting block;7, adjusting screw;8, reinforcing rib plate;X, first direction;Y, second direction. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] In the description of the utility model, it should be explained that the terms used here are only for describing the specific embodiments, and are not intended to limit the example embodiments according to the application. In order to facilitate the description, the size of each part shown in the drawings is not drawn according to the actual proportion relationship. The technology, method and equipment known to those skilled in the related art may not be discussed in detail, but under appropriate circumstances, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as only exemplary, and not as a limitation. Therefore, other examples of example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] Example 1

[0036] As Figures 1-2As shown, the embodiment provides an insulating sheet feeding mechanism, which comprises two sets of trough bodies 1, two sets of mounting plates 2 and two sets of supporting pieces 3.

[0037] As shown, the embodiment provides an insulating sheet feeding mechanism, which comprises two sets of trough bodies 1, two sets of mounting plates 2 and two sets of supporting pieces 3. Figure 2 Each of the two sets of trough bodies 1 is provided with a containing groove matched with the end shape of the insulating sheet 200, the two sets of trough bodies 1 are symmetrically distributed along the first direction X, and the two containing grooves are opposite to each other, and the two sets of trough bodies 1 form a containing space matched with the shape of the insulating sheet 200.

[0038] The two sets of mounting plates 2 are spaced apart along the second direction Y, and the two sets of mounting plates 2 are connected with the two sets of trough bodies 1 respectively, and the mounting plate 2 can be connected with the machine table 300; the mounting plate 2 and the corresponding trough body 1 are fixed in position, and in the embodiment, the connection between the mounting plate 2 and the trough body 1 is detachable.

[0039] The two sets of supporting pieces 3 are spaced apart along the first direction X, and the two sides of the supporting piece 3 are connected with the two sets of trough bodies 1 respectively, and the two sets of supporting pieces 3 can hold the edges of the insulating sheet 200.

[0040] In the embodiment, the two sets of trough bodies 1, the two sets of mounting plates 2 and the two sets of supporting pieces 3 are fixed in position relative to each other, forming an insulating sheet trough 100 with a fixed containing space, and a batch of insulating sheets 200 can be stored in the containing space; when the insulating sheets 200 are stored in the insulating sheet trough 100, the side walls of the insulating sheets 200 can be attached to the side walls of the insulating sheet trough 100, ensuring stable storage of the insulating sheets 200. Figure 1 In use, the insulating sheet trough 100 is mounted on the machine table 300 through the two sets of mounting plates 2, and then the insulating sheets 200 are sucked out of the insulating sheet trough 100 by a mechanical hand or a pneumatic cylinder through vacuum suction, and then are attached to the top of the battery, ensuring the accuracy of the battery sheet attachment.

[0041] In the embodiment, the feeding mechanism is composed of two sets of trough bodies 1, which jointly define the containing space of the insulating sheet 200, and the containing space is designed to be matched with the shape of the insulating sheet 200; according to different specifications of the insulating sheet 200, corresponding combinations of the trough bodies 1 are selected, and the trough bodies 1 are detachably connected with the mounting plates 2 connected to the machine table 300; compared with the scheme of adjusting the positions of multiple positioning columns to define the insulating sheet 200, this technical scheme not only has fast change speed, but also can effectively ensure the position of the insulating sheet 200 in the feeding mechanism, avoiding the position deviation of the insulating sheet affecting the sheet attachment effect; in addition, the two sides of the supporting piece 3 of the feeding mechanism are connected with the trough bodies 1, which can further enhance the structural strength of the overall feeding mechanism, avoiding the two sets of trough bodies 1 from moving closer to each other due to vibration of the machine table 300, and the supporting piece 3 also provides support for the insulating sheet 200 in the feeding mechanism.

[0042] Embodiment 2

[0043] The embodiment discloses the connecting mode between the mounting plate 2 and the trough body 1 based on the embodiment 1.

[0044] In the embodiment, the mounting plate 2 and the trough body 1 are connected through the threaded fasteners, so that the mounting plate 2 and the trough body 1 are convenient to disassemble and assemble, and the mounting plate 2 and the trough body 1 are convenient to overhaul and replace individually, and the service life of the insulating sheet trough 100 is prolonged.

[0045] Meanwhile, the threaded fasteners can be standard parts, so that the interchangeability of the threaded fasteners is high, and the use cost is low.

[0046] Embodiment 3

[0047] The embodiment discloses the connecting mode between the mounting plate 2 and the trough body 1 based on the embodiment 2.

[0048] In the embodiment, referring to Figure 2 or Figure 5 , the first mounting hole 201 is arranged on the mounting plate 2, referring to Figure 4 , the first threaded hole 101 is arranged on the trough body 1 and is opposite to the first mounting hole 201 in position, and the threaded end of the threaded fastener (not shown in the figure) is screwed with the first threaded hole 101 after passing through the first mounting hole 201.

[0049] In the embodiment, the number of the first mounting hole 201 and the first threaded hole 101 is multiple, the first mounting hole 201 is arranged in a matrix on the mounting plate 2, the first threaded hole 101 is arranged in a matrix on the trough body 1, and in addition, the number of the first mounting hole 201 can be different from the number of the first threaded hole 101.

[0050] Embodiment 4

[0051] The embodiment discloses the connecting mode between the mounting plate 2 and the trough body 1 based on the embodiment 1.

[0052] In the embodiment, the mounting plate 2 and the trough body 1 are connected through the threaded fasteners, so that the mounting plate 2 and the trough body 1 are convenient to disassemble and assemble, and the mounting plate 2 and the trough body 1 are convenient to overhaul and replace individually, and the service life of the insulating sheet trough 100 is prolonged.

[0053] In the embodiment, the mounting plate 2 and the trough body 1 are connected through the threaded fasteners, so that the mounting plate 2 and the trough body 1 are convenient to disassemble and assemble, and the mounting plate 2 and the trough body 1 are convenient to overhaul and replace individually, and the service life of the insulating sheet trough 100 is prolonged.

[0054] Embodiment 5

[0055] The embodiment discloses the connecting mode between the mounting plate 2 and the trough body 1 based on the embodiment 4.

[0056] In the embodiment, as shown in Figure 2 , the two ends of the supporting sheet 3 are provided with locking blocks 4, and the locking blocks 4 are provided with second mounting holes 401, as shown in Figure 3 , the surfaces of the two groups of material groove bodies 1 close to the locking blocks 4 are provided with second threaded holes 102, the second threaded holes 102 are opposite to the second mounting holes 401, and the threaded ends of the threaded fasteners (not shown in the figure) are threadedly connected with the second threaded holes 102 after passing through the second mounting holes 401;

[0057] As shown in Figure 6 , the two sides of the supporting sheet 3 are provided with first connecting holes for mounting the locking blocks 4, and the supporting sheet 3 and the locking blocks 4 are connected through the threaded fasteners;

[0058] In the embodiment, the number of the second mounting holes 401 and the second threaded holes 102 is multiple, and at least one second mounting hole 401 is opposite to one second threaded hole 102; in addition, the number of the second mounting holes 401 can be different from the number of the second threaded holes 102.

[0059] Embodiment 6

[0060] The embodiment is based on the embodiment 5, and the connection between the supporting sheet 3 and the material groove body 1 is further optimized;

[0061] In the embodiment, as shown in Figure 2 , the width of the second mounting hole 401 in the first direction X is greater than the diameter of the second threaded hole 102, so that when the threaded fastener does not lock the supporting sheet 3 and the material groove body 1, the supporting sheet 3 can move relative to the material groove body 1 in the first direction X, so as to adjust the position of the supporting sheet 3, and further control the range of the contact between the supporting sheet 3 and the insulating sheet 200, thereby further improving the accuracy during the battery patching; after the position adjustment of the supporting sheet 3 is completed, the threaded fastener locks the supporting sheet 3 and the material groove body 1, so as to ensure the structural stability of the insulating sheet material groove 100.

[0062] Embodiment 7

[0063] The embodiment is based on the embodiment 6, and the position adjustment mode of the supporting sheet in the first direction X is further optimized;

[0064] In the embodiment, the insulating sheet material groove 100 further comprises two groups of reference blocks 5, two groups of adjusting blocks 6 and two groups of adjusting members, as shown in Figure 2 , the two groups of adjusting blocks 6 are respectively fixed on the two groups of supporting sheets 3, the two groups of reference blocks 5 are distributed in the first direction X, the positions of the two groups of reference blocks 5 in the first direction X are fixed, and the two groups of adjusting members can respectively adjust the distance between the two groups of adjusting blocks 6 and the two groups of reference blocks 5;

[0065] As shown inFigure 6 The middle part of the supporting sheet 3 is provided with a second connecting hole for mounting the adjusting block 6, and the adjusting block 6 is connected with the supporting sheet 3 through a threaded fastener;

[0066] Please refer to Figure 7 The reference block 5 is provided with a plurality of third connecting holes, please refer to Figure 1 When the insulating sheet material groove 100 is installed with the machine table 300, in addition to the installation plate 2 being connected with the machine table 300, the reference block 5 is also connected with the machine table 300, so that the stability when the insulating sheet material groove 100 is connected with the machine table 300 is improved, and the accuracy when the battery sheet is pasted is ensured;

[0067] In the embodiment, the adjusting member can be selected from the linear driving structure in the prior art, such as the cooperation of a screw rod and a nut, the cooperation of a screw rod and a screw rod sleeve, etc. In addition, the adjusting member can be selected from a manually adjusted structure or an electrically controlled adjusting structure.

[0068] Embodiment 8

[0069] The embodiment further discloses a structure of the adjusting member on the basis of the embodiment 7.

[0070] In the embodiment, the adjusting member comprises an adjusting screw rod 7, one end of the adjusting screw rod 7 is rotationally connected with the adjusting block 6, please refer to Figure 7 The reference block 5 is provided with a third threaded hole 501, and the adjusting screw rod 7 is threadedly connected with the third threaded hole 501.

[0071] When the position of the supporting sheet 3 needs to be adjusted, the threaded fastener between the locking block 4 and the groove main body 1 is loosened first, so that the position of the supporting sheet 3 in the first direction X is adjustable, then the adjusting screw rod 7 is rotated according to the requirement, the adjusting block 6 and the supporting sheet 3 are driven to move in the first direction X through the cooperation between the adjusting screw rod 7 and the third threaded hole 501, after the position of the supporting sheet 3 is adjusted, the rotation of the adjusting screw rod 7 is stopped, and the threaded fastener between the locking block 4 and the groove main body 1 is tightened.

[0072] Embodiment 9

[0073] The embodiment further optimizes the connection between the supporting sheet 3 and the groove main body 1 on the basis of the embodiment 1.

[0074] In the embodiment, please refer to Figure 3 and Figure 4 The side of the groove main body 1 close to the supporting sheet 3 is provided with a positioning groove 103, and the end part of the supporting sheet 3 can be clamped into the positioning groove 103, so that before the supporting sheet 3 is fixed with the groove main body 1, the two end parts of the supporting sheet 3 are clamped into the two sets of positioning grooves 103 on the groove main body 1, and then the supporting sheet 3 is fixed with the groove main body 1, so that the assembly between the supporting sheet 3 and the groove main body 1 is facilitated.

[0075] In addition, after the end of the supporting sheet 3 is clamped into the positioning groove 103, the surfaces of the supporting sheet 3 are attached to the sidewalls of the positioning groove 103, the contact area between the supporting sheet 3 and the trough body 1 is increased, and the structural stability of the insulating sheet trough 100 is improved.

[0076] Embodiment 10

[0077] In this embodiment, the structure of the insulating sheet trough 100 is further optimized based on the embodiment 1.

[0078] In this embodiment, referring to Figure 2 The reinforcing rib plate 8 is arranged on the mounting plate 2, and the reinforcing rib plate 8 is in an L shape as a whole. The position of the reinforcing rib plate 8 in the first direction X is fixed, that is, the reinforcing rib plate 8 and the mounting plate 2 will not relatively displace, referring to Figure 1 When the insulating sheet trough 100 is installed on the machine table 300, in addition to the mounting plate 2 being connected to the machine table 300, the reinforcing rib plate 8 is also connected to the machine table 300, so that the stability when the insulating sheet trough 100 is connected to the machine table 300 is improved, and the accuracy when the battery is pasted is ensured.

[0079] The embodiments of the utility model are described above in combination with the drawings, the embodiments and the features in the embodiments in the application can be combined with each other in the case of no conflict, the application is not limited to the above-mentioned specific implementation, the above-mentioned specific implementation is only illustrative, rather than limiting, and the person skilled in the art can make many forms under the inspiration of the application without departing from the scope of the application and the protection scope of the claims, and all the forms belong to the protection of the application.

Claims

1. An insulating sheet supply mechanism characterized by comprising: The application relates to an insulation sheet feeding groove (100) which comprises the following components: two groups of groove bodies (1) which are symmetrically distributed and form accommodating spaces matched with the shapes of insulation sheets (200) between the two groups of groove bodies (1); two groups of mounting plates (2) which are respectively detachably connected with the two groups of groove bodies (1) and can be connected with a machine table (300); two groups of supporting plates (3) which are spaced apart in a first direction (X) and are respectively connected with the two groups of groove bodies (1) and can support the edges of the insulation sheets (200).

2. The insulating sheet supply mechanism according to claim 1, characterized by: The mounting plate (2) is connected with the groove body (1) through a threaded fastener.

3. The insulating sheet supply mechanism according to claim 2, characterized by: The mounting plate (2) is provided with a first mounting hole (201), the groove body (1) is provided with a first threaded hole (101) opposite to the first mounting hole (201), and the threaded end of the threaded fastener is threadedly connected with the first threaded hole (101) after penetrating through the first mounting hole (201).

4. The insulating sheet supply mechanism according to claim 1, characterized by: The supporting plate (3) is connected with the two groups of groove bodies (1) through a threaded fastener.

5. The insulating sheet supply mechanism according to claim 4, characterized by: The two ends of the supporting plate (3) are provided with locking blocks (4), the locking block (4) is provided with a second mounting hole (401), the surfaces of the two groups of groove bodies (1) close to the locking blocks (4) are provided with second threaded holes (102), the second threaded holes (102) are opposite to the second mounting holes (401), and the threaded end of the threaded fastener is threadedly connected with the second threaded holes (102) after penetrating through the second mounting holes (401).

6. The insulating sheet supply mechanism according to claim 5, characterized by: The width of the second mounting hole (401) in the first direction (X) is greater than the diameter of the second threaded hole (102).

7. The insulating sheet supply mechanism according to claim 6, characterized by: The insulation sheet feeding groove (100) further comprises two groups of reference blocks (5), two groups of adjusting blocks (6) and two groups of adjusting members, the two groups of adjusting blocks (6) are respectively arranged on the two groups of supporting plates (3), the two groups of reference blocks (5) are spaced apart in the first direction (X) and are fixed in positions in the first direction (X), and the two groups of adjusting members can respectively adjust the distances between the two groups of adjusting blocks (6) and the two groups of reference blocks (5).

8. The insulating sheet supply mechanism according to claim 7, characterized by: The adjusting member comprises an adjusting screw (7), one end of the adjusting screw (7) is rotationally connected with the adjusting block (6), the reference block (5) is provided with a third threaded hole (501), and the adjusting screw (7) is threadedly connected with the third threaded hole (501).

9. The insulating sheet supply mechanism according to claim 4, characterized by: The side of the groove body (1) close to the supporting plate (3) is provided with a positioning groove (103), and the end of the supporting plate (3) can be clamped into the positioning groove (103).

10. The insulating sheet feed mechanism according to claim 1, characterized by: The mounting plate (2) is provided with a reinforcing rib plate (8) which is fixed in position in the first direction (X).

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