CN214280043U

CN214280043U - Composite material belt forming equipment and heat sealing edge device thereof

Info

Publication number: CN214280043U
Application number: CN202120251662.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-09-24
Anticipated expiration: 2031-01-28

Abstract

The utility model relates to a composite material area former and heat-seal limit device thereof, heat-seal limit device include the frame, set up in the banding subassembly that feeds support piece and set up along the first direction interval of frame. Each edge sealing assembly comprises an edge sealing wheel, and the edge sealing wheels are matched with the feeding supporting pieces to form a hot-pressing channel capable of clamping the composite material belt. At least one of the capping wheel and the feed support is capable of generating heat. The composite material belt formed after thermal compounding can be fed to a next process along the second direction, and can pass through a heat sealing edge device in the feeding process. Because the hot-pressing channel is formed, the edges of the two sides of the width of the composite material belt can be respectively pressed and sealed by the hot-pressing channels of the two sides. Moreover, since the feeding support is configured to allow the composite strip to be fed in the second direction within the hot pressing channel, the edge sealing process does not affect the composite strip being conveyed in the second direction. The composite material belt can be continuously fed in the edge sealing process, so that continuous edge sealing is realized. Therefore, the processing efficiency can be remarkably improved.

Description

Composite material belt forming equipment and heat sealing edge device thereof

Technical Field

The utility model relates to a battery processing technology field, in particular to composite material area former and heat-seal limit device thereof.

Background

In the processing technology of the battery core of the lithium battery, one is to heat and attach a pole piece and a diaphragm in advance to obtain a composite material belt; cutting the composite material belt to form a lamination unit; and finally, stacking the lamination units in sequence to form the battery cell.

Because the pole piece is clamped between the diaphragm and the diaphragm, the edges of the upper diaphragm and the lower diaphragm can not be reliably bonded together. When the composite strip is cut to form a laminated unit, the membrane at the edge may be uneven due to shrinkage, and even a flanging phenomenon may occur. Therefore, the subsequent detection precision and the quality of the battery cell can be influenced. Therefore, the composite tape is attached to the edge of the panel.

The common edge sealing mode generally adopts a hot-pressing block for hot pressing. Namely, two upper and lower hot-press blocks are provided. Two hot pressing blocks are close to each other, and the edge of the composite material belt can be compressed. However, this edge sealing method may result in a reduction in processing efficiency.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a composite material strip forming apparatus and a heat sealing device thereof, which can improve the processing efficiency.

A heat-seal edge device (100) comprising:

a frame (110);

a feed support (120) disposed to the frame (110); and

the edge sealing assemblies (130) are arranged along a first direction at intervals, each edge sealing assembly (130) comprises an edge sealing wheel (131), a rotating shaft of each edge sealing wheel (131) extends along the first direction, the edge sealing wheels (131) are matched with the feeding support (120) to form a hot pressing channel (101) for a composite material belt to pass through, and the edge sealing wheels (131) can enable the composite material belt to be abutted against the feeding support (120);

wherein at least one of the hemming wheel (131) and the feeding support (120) is capable of generating heat, and the feeding support (120) is configured to allow the composite strip to be fed in a second direction perpendicular to the first direction within the hot pressing channel (101).

In one embodiment, the feeding support (120) comprises a roller (121) rotatably mounted on the frame (110), the roller (121) extends along the first direction, and the hot pressing channel (101) is formed between the edge sealing wheel (131) and the roller (121).

In one embodiment, the surface of the roller (121) is provided with an elastic cushion layer.

In one embodiment, the feeding support (120) further comprises a rotary driving member, and the rotary driving member is in transmission connection with the roller (121) and can drive the roller (121) to rotate.

In one embodiment, a position of each of the edge seal assemblies (130) in the first direction is adjustable.

In one embodiment, the frame (110) is configured with a guide rail (111) extending along the first direction, and each of the edge banding assemblies (130) is slidably disposed on the guide rail (111) via a slider.

In one embodiment, each edge banding assembly (130) further comprises a compression driving member (132), wherein the compression driving member (132) is in transmission connection with the edge banding wheel (131) and can drive the edge banding wheel (131) to be close to or far away from the feeding support (120).

In one embodiment, each of the edge seal assemblies (130) further comprises:

a movable plate (133), wherein the pressing driving piece (132) is arranged on the movable plate (133);

the connecting plate (134) is arranged at the driving end of the compression driving piece (132);

the two supporting plates (135) are arranged at intervals along the first direction and fixed on the connecting plate (134), and the edge sealing wheel (131) is arranged between the two supporting plates (135) through a pin shaft;

and the fixing rings (136) are clamped on the pin shaft and are positioned on two opposite sides of the edge sealing wheel (131).

In one embodiment, the edge banding assembly (130) further comprises a heating element (137) configured to cause the edge banding wheel (131) to generate heat and a temperature sensor (138) to detect a temperature of the edge banding wheel (131).

A composite strip forming apparatus, comprising a heat-sealing edge device (100) as described in any of the above preferred embodiments.

Above-mentioned compound material area former and heat-seal limit device thereof, the compound material area that forms after the thermal recombination can be followed the next process of second direction and fed, and can pass through heat-seal limit device among the feeding process. In a first direction, the edge sealing assemblies arranged at intervals can be matched with the feeding support to form a hot pressing channel. Therefore, the edges of the two sides of the width of the composite material belt can be respectively pressed and sealed by the hot pressing channels on the two sides. Moreover, since the feeding support is configured to allow the composite strip to be fed in the second direction within the hot pressing channel, the edge sealing process does not affect the composite strip being conveyed in the second direction. The composite material belt can be continuously fed in the edge sealing process, so that continuous edge sealing is realized. Therefore, the processing efficiency can be remarkably improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a heat sealing edge device in accordance with a preferred embodiment of the present invention;

FIG. 2 is a rear elevational view of the thermal edge bonding apparatus of FIG. 1;

fig. 3 is a schematic structural view of the composite material belt prepared by the composite material belt forming equipment of the present invention;

fig. 4 is a transverse cross-sectional view of the composite tape shown in fig. 3.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, the present invention provides a composite material tape forming apparatus and a heat sealing device 100. Wherein, the composite material strip forming device comprises a heat sealing edge device 100.

The composite tape forming apparatus generally further includes a thermal bonding mechanism, which is configured to thermally bond the pole pieces and the diaphragm to obtain a composite tape 20, and convey the composite tape 20 along a predetermined feeding path. The edge sealing device 100 is disposed in the feed path of the composite strip 20. Accordingly, the composite strip 20 may be transported past the edge sealing device 100 and the edge sealing may be accomplished by the edge sealing device 100.

As shown in fig. 3 and 4, the composite tape 20 includes a diaphragm 21 and a pole piece 22, the diaphragm 21 and the pole piece 22 are double layers, and the polarities of the upper and lower pole pieces 22 are opposite. Obviously, in other embodiments, the number of layers of the composite tape 20 may vary according to requirements, and both the membrane 21 and the substrate 22 may be more than two layers. The purpose of the edge sealing device 100 is to press-bond the edge of the composite tape 20, i.e. the edge of the multi-layer membrane 21 located in the area a, so as to prevent the membrane 21 in the area from tilting. After edge sealing, the composite tape 20 is cut along the cutting line B to obtain a plurality of lamination units 23.

Referring to fig. 2, the heat sealing apparatus 100 of the preferred embodiment of the present invention includes a frame 110, a feeding support 120 and an edge sealing assembly 130.

The frame 110 serves as a support and is generally a metal frame structure. In order to increase the supporting strength, a reinforcing plate (not shown) may be disposed on the frame 110. The feeding support 120 is provided to the frame 110. The feed support 120 may be used to carry the composite strip 20 as the composite strip 20 is fed to the heat sealing edge device 100. The edge banding assemblies 130 are spaced apart in a first direction. Specifically, the edge sealing assemblies 130 are at least two and are distributed on two opposite sides of the frame 110 in the first direction. In this embodiment, there are two edge sealing assemblies 130, and two edge sealing assemblies 130 are respectively disposed on two sides of the frame 110, so as to perform hot-pressing edge sealing on two sides of the composite material tape 20. Obviously, a plurality of edge sealing assemblies 130 can be arranged on one side of the rack 110. The first direction is a horizontal direction as shown in fig. 1 and 2.

Each edge banding assembly 130 includes an edge banding wheel 131, and the axis of rotation of the edge banding wheel 131 extends in a first direction. The edging wheel 131 cooperates with the feeding support 120 to form a hot-pressing channel 101 for the composite strip 20 to pass through. The edge sealing wheel 131 may be a plastic wheel or a metal wheel, and the surface of the edge sealing wheel 131 is hard and can apply pressure to the composite tape 20 clamped and pressed in the hot pressing channel 101 along the radial direction of the edge sealing wheel 131, so as to press the composite tape 20 against the feeding support 120.

Moreover, since the edge sealing assemblies 130 are disposed on two opposite sides of the frame 110 in the first direction, the hot pressing passages 101 are also disposed on two opposite sides of the frame 110 in the first direction. As the composite strip 20 is fed to the heat sealing edge device 100, the composite strip 20 is conveyed in a second direction perpendicular to the first direction. The second direction is a direction perpendicular to the plane of the drawing as shown in fig. 1 and 2, i.e., an extending direction of the composite tape 20, and the first direction is a width direction of the composite tape 20. Therefore, both side edges of the composite tape 20 in the width direction can be clamped in the hot pressing channel 101.

Also, at least one of the edge banding wheel 131 and the feeding supporter 120 can generate heat. It can be seen that the edges of the composite tape 20 clamped in the hot pressing channel 101 can be heated while being clamped, so that the membranes 21 at the two side edges of the composite tape 20 are pressed and bonded in the hot pressing channel 101, and the edge sealing is completed.

In this embodiment, the edge banding assembly 130 further includes a heater 137 configured to heat the edge banding wheel 131 and a temperature sensor 138 to detect a temperature of the edge banding wheel 131. The heating member 137 may be a heating wire, a heating rod, and the temperature sensor 138 may be a thermal resistor. The heating member 137 may be disposed at one end of the rotation shaft of the edge sealing wheel 131. The temperature of the surface of the edge sealing wheel 131 can be detected in real time by the temperature sensor 138, so that the temperature in the hot pressing channel 101 can be maintained in a proper range.

Obviously, in other embodiments, a heating element may be used to heat the feeding supporter 120, or both the feeding supporter 120 and the edge banding wheel 131 may be heated.

Since the edge sealing wheel 131 is rotatable, and the rotation shaft extends in the first direction. Therefore, when the composite tape 20 clamped in the hot pressing channel 101 is fed in the second direction, the edge sealing wheel 131 is driven to rotate. The edge sealing wheel 131 can roll relative to the composite tape 20, i.e. the edge sealing wheel 131 can support without limiting the feeding of the composite tape 20. Further, the feeding support 120 is configured to allow the composite tape 20 to be fed in the second direction within the hot pressing channel 101. That is, the feeding support 120 may also be actively or passively fed in the second direction.

It can be seen that the feeding support 120, while cooperating with the edge banding wheel 131 to perform edge banding, does not limit the feeding of the composite tape 20 clamped in the hot pressing channel 101. Thus, the edge sealing process does not affect the transfer of the composite strip 20 in the second direction. The composite strip 20 may be fed continuously during the edge sealing process to achieve a continuous edge seal. Therefore, the composite material belt forming equipment does not need to stop when the edge is sealed, and the composite material belt 20 can be continuously fed, so that the processing efficiency is improved.

In this embodiment, the feeding supporter 120 includes a roller 121 rotatably installed at the frame 110, the roller 121 extends in the first direction, and the hot pressing passage 101 is formed between the edge banding wheel 131 and the roller 121.

The rotating shaft of the roller 121 also extends along the first direction, and when the composite tape 20 clamped by the hot pressing channel 101 is fed along the second direction, the roller 121 rotates around the rotating shaft extending along the first direction. Moreover, since the roller 121 has a larger size in the first direction, the composite tape 20 can be supported well, and the composite tape 20 can be effectively prevented from sliding off the feeding support 120.

It should be noted that in other embodiments, the feed support 120 may alternatively take other forms. Such as:

the feeding supporter 120 may include a roller having the same structure as the edge banding wheel 131, and a surface of the roller is disposed opposite to a surface of the edge banding wheel 131 and constitutes the hot pressing passage 101. Alternatively, the feeding supporter 120 may include a driving wheel and a conveyor belt sleeved on the driving wheel, and the conveyor belt may be driven by the driving wheel to perform reciprocating transmission along the second direction. The edge sealing wheel 131 can be matched with the surface of the conveyor belt to form the hot-pressing channel 101.

Further, in this embodiment, the feeding support 120 further includes a rotary driving member (not shown), which is in transmission connection with the roller 121 and can drive the roller 121 to rotate.

The rotary drive may be an electric motor, the speed of which can be adjusted to match the feed speed of the composite strip 20. That is, the roller 121 can realize active feeding by the driving of the rotary driving member. In this way, when the composite tape 20 clamped in the hot pressing channel 101 is fed in the second direction, the rollers 121 can be synchronized with the composite tape 20. Therefore, the resistance of the composite tape 20 caused by the over-roller 121 is small, so that the composite tape 20 can be effectively protected to prevent the composite tape 20 from being damaged.

It is noted that in other embodiments, the rotary drive may be omitted and the composite strip 20 may be fed in the second direction by traction. At this time, the roller 121 is driven by the composite tape 20 to rotate.

In this embodiment, the surface of the roller 121 has an elastic cushion (not shown). The main body of the roller 121 may be formed of a hard material such as metal or plastic, and an elastic pad formed of a flexible material such as silicon rubber or rubber is irradiated on the surface thereof. In addition, the roller 121 may be integrally formed of a material having a relatively soft texture, such as a rubber roller. In this way, a buffer can be formed between the roller 121 and the composite tape 20, so that the roller 121 can be prevented from damaging the composite tape 20 in the edge sealing process.

In this embodiment, the position of each edge banding assembly 130 in the first direction is adjustable. That is, the distance between the sealing edge assemblies 130 on both sides of the frame 110 in the first direction is adjustable, so that the distance between the hot pressing tunnels 101 on both sides of the frame 110 is also adjustable. The edges of the composite material belts 20 with different widths can be clamped by adjusting the distance between the hot pressing channels 101 on the two sides of the frame 110.

Specifically, the battery cells have different models, so the composite tape 20 also has multiple models correspondingly. The width of the composite tape 20 varies from model to model. Accordingly, by adjusting the distance between the edge sealing assemblies 130 in the first direction, the edge sealing device 100 can be adapted to a variety of types of composite tapes 20, thereby enhancing compatibility.

Further, in the present embodiment, the frame 110 is provided with a guide rail 111 extending in the first direction, and each of the edge banding assemblies 130 is slidably provided to the guide rail 111 through the slider 112.

The guide rail 111 cooperates with the slider 112 to provide a better guiding function for the edge banding assembly 130. Moreover, the process of adjusting the position of the edge banding assembly 130 in the first direction is more stable. Thus, after the relative position of the edge sealing assembly 130 is adjusted, the edge sealing assembly 130 does not need to be debugged again, and the operation time is effectively saved. In addition, a retaining member (not shown) is typically provided on the hem assembly 130. The retaining member secures the edge seal assembly 130 in a given position as the edge seal assembly 130 is slid along the rail 111 to the given position.

In this embodiment, each edge banding assembly 130 further comprises a compression drive 132, wherein the compression drive 132 is drivingly connected to the edge banding wheel 131 and is capable of driving the edge banding wheel 131 toward or away from the feeding support 120.

Specifically, the pressing driving member 132 may be an air cylinder, or may be not only an electric motor. By driving the edge sealing wheel 131 closer to or farther from the feeding support 120, the height of the hot pressing path 101 can be adjusted. For a composite material belt 20 with a certain thickness, the closer the edge sealing wheel 131 is to the feeding support 120, the smaller the height of the hot pressing channel 101 is, and the greater the pressure applied to the composite material belt in the hot pressing channel 101 is; the farther the edge sealing wheel 131 is from the feeding support 120, the greater the height of the hot pressing channel 101 is, and the smaller the pressure applied to the composite material belt in the hot pressing channel 101 is, until the composite material belt cannot be clamped effectively.

It can be seen that the pressing force applied to the composite tape 20 by the edge sealing wheel 131 can be adjusted by the pressing driving member 132, so that the composite tape 20 can be prevented from being crushed due to too high pressure, and the edge sealing effect can be prevented from being poor due to too low pressure.

It should be noted that in other embodiments, the distance between the edge banding wheel 131 and the feed support 120 may remain fixed after initial calibration. In addition, the edge sealing wheel 131 can be kept fixed relative to the frame 110, and the distance between the edge sealing wheel 131 and the feeding support 120 can be adjusted by driving the feeding support 120 to act. Alternatively, the edge sealing wheel 131 and the feeding support 120 are driven to approach or separate from each other synchronously by the driving member.

Further, in the present embodiment, each edge sealing assembly 130 further includes a movable plate 133, a connecting plate 134, a supporting plate 135 and a fixing ring 136. Wherein:

the pressing driving member 132 is disposed on the movable plate 133. The movable plate 133 may be fixed to the slider 112 and slidably disposed on the guide rail 111 through the slider 112. The moveable plate 133 may enable adjustment of the position of the banding assembly 130 in the first direction as it slides along the rail 111. The connecting plate 134 is provided at the drive end of the compression driver 132. The number of the support plates 135 is two, and the two support plates 135 are disposed at intervals in the connection plate 134 along the first direction. The edge sealing wheel 131 is mounted between two support plates 135 by a pin (not shown). The securing ring 136 may be a circular ring-shaped snap ring. Moreover, the fixing rings 136 are held on the pin and located at opposite sides of the edge sealing wheel 131.

The movable plate 133 supports other portions of the edge banding assembly 130 and enables the portions to remain fixed in relative position during movement. The fixing ring 136 can prevent the edge sealing wheel 131 from moving in the direction of the rotation axis thereof, thereby preventing the edge sealing wheel 131 from shaking. Therefore, when the composite tape 20 is clamped in the hot pressing channel 101 and sealed, the sealing wheel 131 can be prevented from swinging to cause sliding friction on the surface of the composite tape 20, thereby effectively avoiding abrasion on the composite tape 20.

According to the composite material strip forming equipment and the heat-sealing edge device 100 thereof, the composite material strip 20 formed after heat compounding can be fed to the next process along the second direction, and can pass through the heat-sealing edge device 100 in the feeding process. In the first orientation, the edge banding assemblies 130, which are spaced apart, can cooperate with the feed support 120 to form the hot pressing channel 101. Therefore, the edges on both sides of the width of the composite tape 20 can be respectively subjected to the press sealing by the hot pressing channels 101 on both sides. Moreover, since the feeding support 120 is configured to allow the composite tape 20 to be fed in the second direction within the hot pressing channel 101, the edge sealing process does not affect the composite tape 20 being conveyed in the second direction. The composite strip 20 may be fed continuously during the edge sealing process to achieve a continuous edge seal. Therefore, the processing efficiency can be remarkably improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heat-seal edge device (100), comprising:

a frame (110);

a feed support (120) disposed to the frame (110); and

2. The edge sealing device (100) according to claim 1, wherein the feeding support (120) comprises a roller (121) rotatably mounted to the frame (110), the roller (121) extending in the first direction, and the hot pressing passage (101) is formed between the edge sealing wheel (131) and the roller (121).

3. A heat-seal edge apparatus (100) according to claim 2, wherein the surface of the over-roller (121) has an elastic cushion layer.

4. The heat-seal edge device (100) according to claim 2, wherein the feeding support (120) further comprises a rotary driving member, the rotary driving member is in transmission connection with the roller (121) and can drive the roller (121) to rotate.

5. The apparatus (100) of claim 1, wherein a position of each of the edge seal assemblies (130) in the first direction is adjustable.

6. The apparatus (100) of claim 5, wherein the frame (110) is configured with a rail (111) extending in the first direction, and wherein each of the hem seal assemblies (130) is slidably disposed on the rail (111) via a slider.

7. The apparatus (100) of claim 1, wherein each sealing edge assembly (130) further comprises a compression drive (132), the compression drive (132) being drivingly connected to the sealing wheel (131) and configured to drive the sealing wheel (131) toward and away from the feed support (120).

8. The heat edge sealing device (100) of claim 7, wherein each edge sealing assembly (130) further comprises:

9. The apparatus (100) of claim 1, wherein the edge sealing assembly (130) further comprises a heating element (137) configured to heat the edge sealing wheel (131) and a temperature sensor (138) to detect a temperature of the edge sealing wheel (131).

10. A composite web forming apparatus, comprising a heat-sealable edge device (100) as claimed in any one of claims 1 to 9.