CN211879254U - Hot sealing device - Google Patents

Abstract

The utility model relates to a seal device scalds. This hot sealing device includes: a base; the hot sealing assembly comprises a fixed seat and a hot sealing roller, the fixed seat is movably connected to the base along a first direction, and the hot sealing roller is rotatably connected to the fixed seat around the axis of the hot sealing roller; the fixed seat can drive the ironing and sealing roller to abut against a wound product in the process of moving along the first direction. Because the seal ironing roller is rotatable around self axis, therefore when rolling up the needle and rotate and drive the coiling product and rotate, seal ironing roller also rotates along with the coiling product to the realization is sealed to the boiling hot of coiling product. Compared with the prior art, utilize in this application to seal the roller with scalding around self axis pivoted to roll up the product, scald when sealing and seal the roller with scalding and follow the rotation of coiling product to reduce the frictional force between scalding seal roller and the coiling product, effectively avoided causing the wound film phenomenon such as fish tail, kneading to the coiling product, improved the yields of coiling product greatly, can adapt to high-speed coiling.

Description

Hot sealing device

Technical Field

The utility model relates to a coiling equipment technical field especially relates to a seal device scalds.

Background

With the development of the technology of winding equipment, the winding speed is also developed in the direction of increasing, such as capacitor winding equipment. Generally, a hot sealing device is used to hot seal the wound product during the winding process. However, the conventional hot sealing device realizes hot sealing by directly abutting the heating block against the wound product, and particularly, when the wound product is formed by high-speed winding, the wound product is easily scratched, rubbed, and the like.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a hot sealing apparatus which improves the above-mentioned defects, in order to solve the problem that the film damage phenomenon such as scratching and rubbing is likely to occur to the wound product when the hot sealing apparatus in the related art performs hot sealing to the wound product which is wound and formed at a high speed.

A heat seal apparatus comprising:

a base; and

the hot sealing assembly comprises a fixed seat and a hot sealing roller, the fixed seat is movably connected to the base along a first direction, and the hot sealing roller is rotatably connected to the fixed seat around the axis of the hot sealing roller;

the fixed seat can drive the ironing and sealing roller to abut against a wound product in the process of moving along the first direction.

In one embodiment, the ironing and sealing assembly further comprises a rotating seat, the ironing and sealing roller is rotatably connected to the rotating seat around the axis of the ironing and sealing roller, and the rotating seat is rotatably connected to the fixed seat around a rotating axis;

wherein the rotation axis is perpendicular to the first direction and the axial direction of the ironing and sealing roller.

In one embodiment, the hot sealing assembly further comprises a heating block connected to the fixed seat, and the hot sealing roller is rotatably connected to the heating block around the axis of the hot sealing roller;

and a heating piece for heating the heating block is arranged in the heating block.

In one embodiment, the heating block has a circular arc surface matching the hot sealing roller.

In one embodiment, the circumferential side surface of the ironing and sealing roller is provided with convex and concave grains.

In one embodiment, the hot sealing device further comprises a buffer assembly, wherein the buffer assembly comprises a mounting seat and a buffer piece;

the mounting seat is movably connected to the base along the first direction, and the fixed seat is arranged on the mounting seat and can move along the first direction relative to the mounting seat;

the buffer piece is arranged between the fixed seat and the mounting seat so as to provide pre-tightening force for enabling the fixed seat to have a movement trend of moving away from the mounting seat along the first direction.

In one embodiment, the buffer member is a buffer cylinder, the buffer cylinder includes a fixed end and a telescopic end that is telescopic relative to the fixed end, the fixed end is connected to one of the mounting base and the fixing base, and the telescopic end is connected to the other of the mounting base and the fixing base.

In one embodiment, the hot sealing device further includes a second guiding element and a driving element, the second guiding element is slidably connected to the base, and one end of the second guiding element is connected to the mounting seat, and the driving element is disposed on the base and is in transmission connection with the mounting seat.

In one embodiment, the hot sealing device further comprises a limiting assembly, the limiting assembly comprises an adjusting rod, a fixed block and a limiting block, one end of the adjusting rod is connected to one side, away from the mounting seat, of the base, one end, away from the mounting seat, of the second guide piece penetrates through the base and is connected with the fixed block, and the limiting block is arranged on the adjusting rod and is adjustable in position along the lengthwise direction of the adjusting rod;

and in the process that the mounting seat is far away from the base along the first direction, the limiting block can abut against the fixed block.

In one embodiment, the heat sealing device comprises a plurality of heat sealing components, and the heat sealing components are distributed along a second direction;

wherein the second direction is perpendicular to the first direction.

Above-mentioned seal device scalds when sealing when needs, and the fixing base drives to scald and seals the roller and remove along first direction until should scald and seal the roller and roll up the coiling product looks butt on the needle. Because the seal ironing roller is rotatable around self axis, therefore when rolling up the needle and rotate and drive the coiling product and rotate, seal ironing roller also rotates along with the coiling product to the realization is sealed to the boiling hot of coiling product. Compared with the prior art, the hot sealing device in this application utilizes can scald around self axis pivoted to seal the roller and scald the coiling product, scalds when sealing the roller and follows the coiling product and rotate to reduce the frictional force between scalding the roller and the coiling product, effectively avoided causing the wounded membrane phenomena such as fish tail, kneading to the coiling product, improved the yields of coiling product greatly, can adapt to high-speed coiling.

Drawings

Fig. 1 is a schematic structural view of a hot sealing device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a sealing roll of the sealing apparatus shown in FIG. 1;

FIG. 3 is a schematic structural view of a heat sealing assembly of the heat sealing apparatus shown in FIG. 1 (with some elements omitted);

fig. 4 is a schematic structural view of a limiting component of the hot sealing device shown in fig. 1 (parts of elements are omitted).

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, an embodiment of the present invention provides a hot sealing device, which includes a base 10 and a hot sealing assembly 20. The sealing assembly 20 includes a fixing base 21 and a sealing roller 22, the fixing base 21 is movably connected to the base 10 along a first direction, and the sealing roller 22 is rotatably connected to the fixing base 21 around its own axis.

Wherein, the fixing seat 21 can drive the ironing and sealing roller 22 to abut against the wound product in the process of moving along the first direction. In the embodiment shown in fig. 1, the first direction is a left-right direction.

Above-mentioned hot sealing device, when needs hot sealing, fixing base 21 drives hot sealing roller 22 and moves along first direction until this hot sealing roller 22 and the coiling product butt on the book needle. Because the hot sealing roller 22 can rotate around the axis of the hot sealing roller, when the winding needle rotates to drive the winding product to rotate, the hot sealing roller 22 also rotates along with the winding product, and hot sealing of the winding product is realized. Compared with the prior art, the hot sealing device in this application utilizes can scald around self axis pivoted scalds the roller 22 and seals to the coiling product, scalds when sealing and seals roller 22 and follows the coiling product and rotate to reduce the frictional force that scalds between roller 22 and the coiling product, effectively avoided causing the wounded membrane phenomena such as fish tail, kneading to the coiling product, improved the yields of coiling product greatly, can adapt to high-speed coiling.

It can be understood that the winding product may be a winding core formed by winding by a capacitor winding device, and may also be a battery core formed by winding by a battery winding device. The rolled product may be other products, and is not limited herein.

Referring to fig. 2, in the embodiment, the peripheral side surface of the heat sealing roller 22 is provided with convex-concave grains 222. Thus, the arrangement of the convex-concave grains 222 reduces the contact area between the hot sealing roller 22 and the wound product, so that on one hand, the heat is more concentrated, and the hot sealing effect is improved; on the other hand, during the heat sealing process, the film of the rolled product is provided with extended space, so that wrinkles are avoided. Preferably, a plurality of grooves are opened on the circumferential side surface of the heat sealing roller 22 to form the convex-concave patterns 222 on the circumferential side surface of the heat sealing roller 22. The grooves are arranged at intervals along the axial direction of the ironing and sealing roller 22, and each groove extends lengthwise along the circumferential direction of the ironing and sealing roller 22.

Referring to fig. 1 and 3, in an embodiment of the present invention, the sealing assembly 20 further includes a rotating base 23, and the sealing roller 22 is rotatably connected to the rotating base 23 around its axis. The rotary base 23 is rotatably connected to the fixed base 21 about a rotation axis. Wherein the rotation axis is perpendicular to the first direction and the axial direction of the sealing roll 22. Therefore, the rotary seat 23 can be adjusted to rotate around the rotary axis, so that the central axis of the hot sealing roller 22 is parallel to the central axis of the wound product, and the hot sealing effect is improved. In the embodiment shown in fig. 1, the axis of rotation is perpendicular to the plane of the paper.

In the embodiment, the fixing base 21 has the blocking portion 212, and the blocking portion 212 and the sealing roller 22 are respectively located at two opposite sides of the rotating base 23. The ironing assembly 20 further includes an adjusting member 214, one end of the adjusting member 214 is screwed to one of the blocking portion 212 and the rotating base 23, and the other end of the adjusting member 214 abuts against the other of the blocking portion 212 and the rotating base 23. In this way, the rotary seat 23 can be rotated about the rotation axis by screwing the adjusting member 214, so as to achieve the purpose of adjusting the central axis of the ironing roller 22 to be parallel to the central axis of the wound product. Alternatively, the adjustment member 214 may be a jackscrew.

It should be noted that the adjusting member 214 may include at least two adjusting members 214, and the at least two adjusting members 214 are respectively located at two sides of the rotation axis of the rotation base 23, so as to further facilitate the adjustment of the rotation base 23.

In a particular embodiment, the sealing assembly 20 further comprises a heating block 24, to which heating block 24 the sealing roller 22 is rotatably connected about its own axis. The heating block 24 is fixedly connected to the fixing base 21, and a heating member (not shown) capable of heating the heating block 24 is disposed therein. So, utilize the heating member to heat heating block 24, heating block 24 passes through the air with heat transfer to the hot sealing roller 22 for the temperature distribution of hot sealing roller 22 week side surface is comparatively even, is favorable to improving the hot sealing effect. More specifically, the sealing roller 22 is rotatably connected to the heating block 24 around its axis, the heating block 24 is fixedly connected to the rotating base 23, and the rotating base 23 is rotatably connected to the fixed base 21 around the rotation axis.

Further, the heating member can be connected with temperature measurement component to the temperature of control heating block 24, thereby indirect control scalds the temperature of sealing roller 22, is favorable to improving the effect of sealing. Alternatively, the heating element may be an electrically heated tube. The temperature measuring component may be a thermocouple.

Further, the heating block 24 has a circular arc surface 242 (see fig. 3) matched with the heat sealing roller 22, so that the heat transfer area between the heating block 24 and the heat sealing roller 22 is increased, and the heat transfer efficiency is improved. It can be understood that, in order to prevent the rotation of the sealing roller 22 from being affected, a certain gap is required between the arc surface 242 of the heating block 24 and the sealing roller 22 to avoid direct contact. The gap between the arc surface 242 of the heating block 24 and the sealing roller 22 cannot be excessively large, and the excessively large gap affects the heat conduction between the heating block 24 and the sealing roller 22, and therefore, the gap needs to be set as appropriate, and is not limited thereto.

In particular embodiments, the sealing roll 22 may be mounted to the heating block 24 by bearings. Preferably, the bearing is a high temperature bearing, which prevents heat from the heating block 24 from transferring to the bearing and adversely affecting the bearing.

Specifically, in one embodiment, the heat sealing roller 22, the heating block 24, the fixing base 21, the mounting base 31 described below, and the base 10 are sequentially arranged along the first direction.

Referring to fig. 1, in an embodiment of the present invention, the hot sealing apparatus further includes a buffering assembly 30, and the buffering assembly 30 includes a mounting seat 31 and a buffering member 32. The mounting seat 31 is movably connected to the base 10 along a first direction, and the fixing seat 21 is disposed on the mounting seat 31 and is movable along the first direction relative to the mounting seat 31. The buffer 32 is disposed between the fixing seat 21 and the mounting seat 31 to provide a pre-tightening force that makes the fixing seat 21 have a movement tendency moving away from the mounting seat 31 along the first direction, so that the ironing roller 22 is kept abutting against the wound product. So, when fixing base 21 moves along first direction relative base 10 and makes seal roller 22 and coiling product butt, and along with the in-process of the change of the book footpath of coiling product, make seal roller 22 exert certain pressure to coiling product under the effect of bolster 32 to keep seal roller 22 and coiling product to keep propping, be favorable to improving the seal effect that scalds.

Alternatively, the buffer 32 may be a buffer cylinder. The buffer cylinder comprises a fixed end and a telescopic end which is telescopic relative to the fixed end. The fixed end is fixedly connected to one of the mounting seat 31 and the fixed seat 21, and the telescopic end is fixedly connected to the other of the mounting seat 31 and the fixed seat 21. So, it is flexible relative its stiff end through buffer cylinder's flexible end for seal roller 22 scalds can keep keeping with coiling product looks butt, and is convenient for control seal roller 22 scalds and applies the pressure that gives coiling product and keep invariable (or change less), avoids causing great impact and damage coiling product to coiling product when guaranteeing to scald the seal effect. In the embodiment shown in fig. 1, the fixed end of the buffer cylinder is fixedly connected to the mounting seat 31, and the telescopic end is fixedly connected to the fixed seat 21.

It should be noted that in other embodiments, the buffer 32 may be a spring, and the ironing roller 22 may be kept in contact with the wound product by the elastic force of the spring.

In an embodiment, the sealing assembly 20 further includes a first guiding element 25, the first guiding element 25 is slidably connected to one of the mounting seat 31 and the fixing seat 21, and one end of the first guiding element 25 is connected to the other of the mounting seat 31 and the fixing seat 21, so as to guide the movement of the fixing seat 21 relative to the mounting seat 31 along the first direction.

Further, the first guide 25 may be a guide bar. In the embodiment shown in fig. 1, one end of the first guiding element 25 is fixedly connected to the fixing base 21, and the other end thereof slidably penetrates through the mounting base 31. Of course, the first guide 25 is not limited to a guide rod, and in other embodiments, the first guide 25 may also be a guide structure such as a slide rail, which is not limited herein.

In the embodiment of the present invention, the process of moving the mounting seat 31 relative to the base 10 along the first direction includes the hot sealing position and the initial position, and when the mounting seat 31 moves to the hot sealing position, the hot sealing roller 22 abuts against the winding product; when the mounting seat 31 is moved to the initial position, the ironing roll 22 is separated from the wound product. In this way, during the hot sealing operation, the mounting seat 31 is moved from the initial position to the hot sealing position, so that the hot sealing roller 22 abuts against the wound product, thereby realizing hot sealing of the wound product. At this time, under the action of the buffer 32, the ironing roller 22 applies a certain pressure to the wound product to ensure that the ironing roller 22 is always kept in contact with the wound product in the ironing process. When the sealing is completed, the mounting seat 31 is moved from the sealing position to the initial position to prepare for the next sealing operation.

In the embodiment of the present invention, the hot sealing device may include a plurality of hot sealing components 20 (i.e., two or more than two), and the plurality of hot sealing components 20 are arranged along the second direction. The second direction is perpendicular to the first direction. Therefore, a plurality of coiling products on the coiling needle can be simultaneously hot sealed by utilizing a plurality of hot sealing components 20, and the production efficiency can be improved. Further, the second direction is also perpendicular to the above-mentioned rotation axis. In the embodiment shown in fig. 1, the second direction is an up-down direction. Further, a plurality of buffering members 32 corresponding to the plurality of ironing seal assemblies 20 one to one may be provided, so as to ensure that the ironing roller 22 of each ironing seal assembly 20 always abuts against the wound product in the ironing seal process, thereby improving the ironing seal effect.

The embodiment of the utility model provides an in, scald the sealing device and still include second guide 13 and driving piece 12, this second guide 13 sliding connection in base 10, and one end and mount pad 31 fixed connection, driving piece 12 sets up in base 10, and is connected with mount pad 31 transmission to drive mount pad 31 and remove along the first direction. The second guide 13 guides the movement of the mounting seat 31 along the first direction, so that the movement of the mounting seat 31 is more stable and reliable. Alternatively, the driver 12 may be a drive cylinder.

Referring to fig. 1 and 4, in the embodiment, the hot sealing device further includes a limiting component 40, and the limiting component 40 includes an adjusting rod 41, a fixing block 42 and a limiting block 43. One end of the adjusting rod 41 is fixedly connected to a side of the base 10 away from the mounting seat 31. One end of the second guiding element 33, which is far away from the mounting seat 31, penetrates through the base 10 and is connected with the fixing block 42. The stopper 43 is provided on the adjustment lever 41, and the position along the longitudinal direction of the adjustment lever 41 is adjustable.

During the process that the mounting seat 31 is far away from the base 10 along the first direction, the limit block 43 may abut against the fixed block 42, so as to prevent the mounting seat 31 from continuing to be far away from the base 10 along the first direction. In this manner, the stopper 43 is used to define the moving range of the mount 31 in the first direction. In addition, the moving range of the mounting seat 31 along the first direction can be adjusted by adjusting the position of the limiting block 43 relative to the adjusting rod 41, which is beneficial to improving the applicability of the hot sealing device. Preferably, the stopper 43 is threadedly coupled to the adjustment lever 41. That is, the adjustment rod 41 has an external thread, the stopper 43 has a threaded hole through which the adjustment rod 41 is inserted, and the internal thread of the threaded hole is screwed with the external thread of the adjustment rod 41.

Further, the adjustment lever 41 has a scale thereon to facilitate precise control of the range of movement of the mount 31 in the first direction.

Further, the fixing block 42 is opened with a clearance hole 422 (see fig. 4) corresponding to the adjustment rod 41, and the adjustment rod 41 can pass through the clearance hole 422 in the process that the mounting base 31 is far away from the base 10 along the first direction, so that the fixing block 42 is prevented from interfering with the movement of the adjustment rod 41.

Further, the second guiding element 13 may include a plurality of (i.e. two or more) second guiding elements 13, and the fixing block 42 is fixedly connected to an end of each second guiding element 13 far from the mounting seat 31, so as to further improve the guiding effect and improve the moving stability of the mounting seat 31.

The manner of mounting the second guide 13 is not limited to the manner in the above-described embodiment. In other embodiments, the second guiding element 13 may also be slidably connected to the mounting seat 31, and one end of the second guiding element is fixedly connected to the base 10, so as to guide the movement of the mounting seat 31 relative to the base 10 along the first direction. It will be appreciated that further, one end of the adjustment lever 41 needs to be fixedly connected to the side of the mounting block 31 facing away from the base 10. One end of the second guiding element 13, which is far away from the base 10, penetrates through the mounting seat 31 and is connected with the fixing block 42. The stopper 43 is provided on the adjustment lever 41, and the position along the longitudinal direction of the adjustment lever 41 is adjustable. During the process that the mounting seat 31 is far away from the base 10 along the first direction, the limiting block 43 can be abutted against the fixing block 42.

Alternatively, the second guide 13 may be a guide bar. Further, in the embodiment shown in fig. 1, one end of the second guiding element 13 is fixedly connected to the mounting seat 31, and the other end is slidably disposed through the base 10. Of course, the second guiding element 13 is not limited to be in the form of a guide rod, and in other embodiments, the second guiding element 13 may also be a guiding structure such as a sliding rail, which is not limited herein.

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 (10)

1. A heat sealing device, comprising:

a base; and

the hot sealing assembly comprises a fixed seat and a hot sealing roller, the fixed seat is movably connected to the base along a first direction, and the hot sealing roller is rotatably connected to the fixed seat around the axis of the hot sealing roller;

the fixed seat can drive the ironing and sealing roller to abut against a wound product in the process of moving along the first direction.

2. A heat sealing apparatus according to claim 1, wherein said heat sealing assembly further comprises a rotary base, said heat sealing roller being rotatably connected to said rotary base about its own axis, said rotary base being rotatably connected to said fixed base about a rotation axis;

wherein the rotation axis is perpendicular to the first direction and the axial direction of the ironing and sealing roller.

3. A heat sealing apparatus according to claim 1, wherein said heat sealing assembly further comprises a heating block connected to said holder, said heat sealing roller being rotatably connected to said heating block about its axis;

and a heating piece for heating the heating block is arranged in the heating block.

4. A heat sealing apparatus according to claim 3, wherein said heating block has a circular arc surface matching said heat sealing roller.

5. A heat sealing device according to claim 1, wherein a peripheral side surface of the heat sealing roller is provided with convex and concave grains.

6. The heat seal apparatus of claim 1, further comprising a cushion assembly, said cushion assembly comprising a mount and a cushion;

the mounting seat is movably connected to the base along the first direction, and the fixed seat is arranged on the mounting seat and can move along the first direction relative to the mounting seat;

the buffer piece is arranged between the fixed seat and the mounting seat so as to provide pre-tightening force for enabling the fixed seat to have a movement trend of moving away from the mounting seat along the first direction.

7. The heat sealing device of claim 6, wherein the buffer member is a buffer cylinder, the buffer cylinder includes a fixed end and a telescopic end that is telescopic relative to the fixed end, the fixed end is connected to one of the mounting base and the fixed base, and the telescopic end is connected to the other of the mounting base and the fixed base.

8. The hot sealing device as claimed in claim 6, further comprising a second guiding member and a driving member, wherein the second guiding member is slidably connected to the base, and one end of the second guiding member is connected to the mounting base, and the driving member is disposed on the base and is in transmission connection with the mounting base.

9. The hot sealing device according to claim 8, further comprising a limiting component, wherein the limiting component comprises an adjusting rod, a fixing block and a limiting block, one end of the adjusting rod is connected to one side of the base, which is far away from the mounting seat, one end of the second guiding member, which is far away from the mounting seat, penetrates through the base and is connected with the fixing block, and the limiting block is arranged on the adjusting rod and is adjustable in position along the lengthwise direction of the adjusting rod;

and in the process that the mounting seat is far away from the base along the first direction, the limiting block can abut against the fixed block.

10. A heat sealing apparatus according to any one of claims 1 to 9, wherein said heat sealing apparatus comprises a plurality of said heat sealing members, said plurality of heat sealing members being arranged in a second direction;

wherein the second direction is perpendicular to the first direction.

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