阅读说明：本技术 焊接设备 (Welding equipment ) 是由 王鸿鹏 欧阳进 于 2021-05-13 设计创作，主要内容包括：本发明公开一种焊接设备,该焊接设备用于焊接膜材,所述膜材的焊接位置包括焊接区和设有凸起结构的突兀区,所述焊接设备包括热熔装置和第一压轮。所述热熔装置用于对所述焊接区进行加热,所述第一压轮用于辊压所述焊接区,以实现所述膜材的焊接；所述第一压轮的外周还设有环形的第一让位槽,所述第一让位槽用于供所述第一压轮跨过所述凸起结构。本发明焊接设备可解决采用现有的一些焊接设备焊接表面具有凸起结构的膜材时会比较麻烦的技术问题。(The invention discloses a welding device, which is used for welding membrane materials, wherein the welding position of the membrane materials comprises a welding area and a sharp area provided with a convex structure, and the welding device comprises a hot melting device and a first pressing wheel. The hot melting device is used for heating the welding area, and the first pressing wheel is used for rolling the welding area so as to realize the welding of the membrane material; the periphery of first pinch roller still is equipped with annular first groove of stepping down, first groove of stepping down is used for supplying first pinch roller strides over protruding structure. The welding equipment can solve the technical problem that the existing welding equipment is troublesome when used for welding the membrane material with the convex structure on the surface.)

1. A welding apparatus for welding membranes, the welding position of the membranes comprising a welding zone and an abrupt zone provided with a raised structure, characterized in that the welding apparatus comprises:

the hot melting device is used for heating the welding area; and the number of the first and second groups,

the first pressing wheel is used for rolling the welding area to realize the welding of the membrane material; the periphery of first pinch roller still is equipped with annular first groove of stepping down, first groove of stepping down is used for supplying first pinch roller strides over protruding structure.

2. The welding apparatus of claim 1, wherein there are a plurality of said welding zones, and one said abrupt zone is disposed between two adjacent said welding zones;

a plurality of first flanges are formed on the periphery of the first pressing wheel, are opposite at intervals along the axial direction of the first pressing wheel and are used for corresponding to the welding areas one by one; and one first yielding groove is formed between every two adjacent first flanges.

3. The welding apparatus of claim 2, further comprising a second pinch roller spaced below the first pinch roller, the first pinch roller and the second pinch roller rotating in opposite directions and configured to roll together a plurality of films to be welded.

4. The welding apparatus as claimed in claim 3, wherein said welding apparatus moves relative to said film in a direction of extension of said weld zone while welding the film;

the first pinch roller and the second pinch roller are driven by a motor to rotate, and the linear velocities of the first pinch roller and the second pinch roller are the same when the first pinch roller and the second pinch roller move relative to the film material.

5. The welding apparatus of claim 4, wherein a radius of the second pressure wheel is smaller than a radius of the first pressure wheel.

6. The welding apparatus of any one of claims 1 to 5, further comprising a first frame and a second frame mounted on the first frame, the first frame having running wheels mounted thereon for supporting the first frame, the first pinch roller and the thermal fuser being mounted on the second frame;

when the first frame walks on the walking surface on which the membrane material is placed, a gap between the bottom of the first frame and the walking surface can be penetrated by the protruding structure on the membrane material;

the second frame is connected with the side edge of the first frame through the side edge of the second frame and is arranged at intervals with the first frame, and a gap between the second frame and the first frame can be penetrated by a membrane material with a protruding structure.

7. The welding apparatus of claim 6, wherein the first frame has opposing front and rear ends, and wherein the running wheels comprise first and second running wheels disposed on the front end and on either side of the first frame, respectively, and wherein the first and/or second running wheels are capable of rolling between two adjacent raised structures.

8. The welding apparatus of claim 6, wherein the thermal fusing device comprises a thermal wedge having an upper heating surface and a lower heating surface, the upper heating surface being recessed with a third relief groove corresponding to the abrupt zone during welding, and the lower heating surface being recessed with a fourth relief groove corresponding to the third relief groove.

9. The welding apparatus of claim 8, wherein the thermal fuse device further comprises a fixed base mounted on the second rack, the fixed base having a side surface to which the thermal wedge is attached and a bottom surface facing the lower heating surface;

the lower heating surface and have the difference in height in the vertical direction and be formed with the clearance of stepping down between the bottom surface, the clearance of stepping down is located the below of fixing base and one side of hot voussoir to be used for the confession to be located protruding structure on the membrane material of bottom surface below passes.

10. The welding apparatus of claim 6, wherein a surface of the first frame facing away from the second frame is further provided with a first guide bar extending away from the second frame and capable of passing through a gap between two adjacent raised structures on the film;

and/or the surface of the second frame facing the first frame is also provided with a second guide rod, and the second guide rod extends towards the direction close to the first frame and can penetrate through a gap between two adjacent protruding structures on the membrane material.

Technical Field

The invention relates to the technical field of welding instruments, in particular to welding equipment.

Background

Some existing welding equipment mainly roll two heated films (or plates, sheets and the like) through a pressing wheel, and further realize welding between the films. Therefore, some existing welding equipment are limited to welding at the welding position with a flat surface, when the welding position is provided with protruding structures such as anchors, the protruding structures can prevent the pressing wheel from rolling and cannot be constructed and welded, and at the moment, the protruding structures on the welding position are usually removed firstly and then welding is carried out.

However, this not only consumes labor and time and is troublesome to operate, but also results in losing or reducing the function of the protruding structure on the membrane (such as anchoring function by anchoring objects, positioning function by positioning protrusions, etc.) due to the removal of the protruding structure.

The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.

Disclosure of Invention

The invention mainly aims to provide welding equipment, and aims to solve the technical problem that the existing welding equipment is troublesome when used for welding a membrane material with a convex structure on the surface.

In order to achieve the purpose, the welding equipment provided by the invention is used for welding the membrane, the welding position of the membrane comprises a welding area and a sharp area provided with a convex structure, and the welding equipment comprises a hot melting device and a first pressing wheel. The hot melting device is used for heating the welding area, and the first pressing wheel is used for rolling the welding area so as to realize the welding of the membrane material; the periphery of first pinch roller still is equipped with annular first groove of stepping down, first groove of stepping down is used for supplying first pinch roller strides over protruding structure.

In one embodiment, the welding areas are provided with a plurality of welding areas, and one abrupt area is arranged between two adjacent welding areas; a plurality of first flanges are formed on the periphery of the first pressing wheel, are opposite at intervals along the axial direction of the first pressing wheel and are used for corresponding to the welding areas one by one; and one first yielding groove is formed between every two adjacent first flanges.

In one embodiment, the welding equipment further comprises a second pressing wheel, the second pressing wheel is arranged below the first pressing wheel at intervals, and the first pressing wheel and the second pressing wheel rotate oppositely and are used for rolling a plurality of films to be welded together.

In one embodiment, the welding device moves relative to the membrane along the extending direction of the welding area when welding the membrane; the first pinch roller and the second pinch roller are driven by a motor to rotate, and the linear velocities of the first pinch roller and the second pinch roller are the same when the first pinch roller and the second pinch roller move relative to the film material.

In one embodiment, the radius of the second puck is less than the radius of the first puck.

In one embodiment, the welding equipment further comprises a first frame and a second frame arranged on the first frame, the first frame is provided with a traveling wheel for supporting the first frame, and the first pressing wheel and the hot melting device are both arranged on the second frame; when the first frame walks on the walking surface on which the membrane material is placed, a gap between the bottom of the first frame and the walking surface can be penetrated by the protruding structure on the membrane material; the second frame is connected with the side edge of the first frame through the side edge of the second frame and is arranged at intervals with the first frame, and a gap between the second frame and the first frame can be penetrated by a membrane material with a protruding structure.

In an embodiment, the first frame has a front end and a rear end opposite to each other, the running wheels include a first running wheel and a second running wheel which are disposed at the front end and located at two sides of the first frame respectively, and the first running wheel and/or the second running wheel can roll between two adjacent protruding structures.

In an embodiment, the hot melting device comprises a hot wedge block, the hot wedge block is provided with an upper heating surface and a lower heating surface which are opposite, the upper heating surface is concavely provided with a third yielding groove used for corresponding to the abrupt zone during welding, and the lower heating surface is concavely provided with a fourth yielding groove corresponding to the third yielding groove.

In an embodiment, the hot melting device further comprises a fixed seat mounted on the second rack, and the fixed seat has a side surface connected with the hot wedge and a bottom surface facing the same direction as the lower heating surface; the lower heating surface and have the difference in height in the vertical direction and be formed with the clearance of stepping down between the bottom surface, the clearance of stepping down is located the below of fixing base and one side of hot voussoir to be used for the confession to be located protruding structure on the membrane material of bottom surface below passes.

In one embodiment, the surface of the first frame, which faces away from the second frame, is further provided with a first guide rod, and the first guide rod extends in a direction away from the second frame and can penetrate through a gap between two adjacent protruding structures on the film material; and/or the surface of the second frame facing the first frame is also provided with a second guide rod, and the second guide rod extends towards the direction close to the first frame and can penetrate through a gap between two adjacent protruding structures on the membrane material.

According to the welding equipment, the annular first abdicating groove is formed in the periphery of the first pressing wheel, so that when the film material is rolled by the first pressing wheel, the first abdicating groove can enable the first pressing wheel to smoothly stride over the protruding structure on the film material, and further welding of the film material is achieved. It can be understood that when the welding equipment is used for welding the membrane (or the plate, the sheet and the like) with the convex structure on the surface, the convex structure on the membrane does not need to be removed firstly, and the first pressing wheel directly rolls on the welding position, so that the welding equipment is very convenient, and the effect of the convex structure on the membrane can be ensured not to be weakened or lost (such as the anchoring effect of an anchoring object, the positioning effect of a positioning bulge and the like).

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a first pressing wheel and a second pressing wheel of the welding apparatus of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a film welded by the welding apparatus of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of the welding apparatus according to the present invention;

FIG. 4 is a schematic structural diagram of a welding apparatus according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a welding apparatus according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a welding apparatus according to another embodiment of the present invention;

FIG. 7 is a schematic structural view of an embodiment of a hot wedge in a welding apparatus according to the present invention;

FIG. 8 is a left side view of the hot wedge of FIG. 7;

FIG. 9 is a schematic structural diagram of a hot melt apparatus in a welding apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic view of the hot melt apparatus of FIG. 9 in position relative to the film during welding;

FIG. 11 is a view showing the structure of an embodiment of a first frame and a second frame in the welding apparatus of the present invention;

fig. 12 is a schematic view showing the positions of the first frame and the second frame with respect to the film material during welding in fig. 11.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						10	Welding equipment	312	Lower heating surface	50	Second pinch roller
20	Film material	313	Third groove of stepping down	51	Second abdicating groove
						21	Welding zone	314	The fourth groove of stepping down	52	Second flange
22	Abrupt zone	315	Upper guide surface	60	First frame
						23	Bump structure	316	Lower guide surface	61	First guide bar
24	Upper film	317	Heated bore	70	Second frame
						25	Lower film	32	Fixed seat	71	Second guide bar
251	Section to be welded	321	Side surface	80	Walking wheel
						252	At the welding section	322	Bottom surface	81	First running wheel
30	Hot melting device	40	First pinch roller	82	Second running wheel
						31	Thermal wedge	41	The first abdicating groove	90	Abdication gap
311	Upper heating surface	42	First flange

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 2, some films 20 (or plates, sheets, etc., which will be described below by way of example as the film 20) are provided with a protruding structure 23 on the surface thereof for some needs, for example, an anchor is protruded, and the film 20 is anchored on an installation surface (such as a wall surface, a box surface, etc.) by the anchor, so as to enhance the installation stability of the film 20. Or a positioning bulge is convexly arranged to facilitate quick positioning when the membrane material 20 is installed. And as with the conventional, flat-surfaced film 20, the plurality of films 20 having raised structures 23 may sometimes need to be welded together and then installed or used.

However, some existing welding apparatuses 10 are limited to welding at a welding position with a flat surface, and when the protruding structure 23 is disposed at the welding position, the protruding structure 23 blocks the rolling of the pressing wheel, so that welding cannot be performed, and at this time, the protruding structure 23 at the welding position is usually removed first, and then welding is performed.

The removal of the protruding structure 23 on the film 20 not only requires a lot of labor and time and is troublesome, but also loses or reduces the effect of the protruding structure 23 on the film 20 due to the removal of the protruding structure 23. Therefore, the present invention proposes a welding apparatus 10 to enable convenient welding of the film 20 having the projection structure 23.

To better illustrate the solution of the welding apparatus 10 of the present invention, the present specification takes as an example the welding of two films 20 of the following structure: as shown in fig. 2, two film materials 20 to be welded may be respectively referred to as an upper film 24 and a lower film 25, lower surfaces of the upper film 24 and the lower film 25 are both flat, and upper surfaces of the upper film 24 and the lower film 25 are both convexly provided with a plurality of anchors. The plurality of anchors are arranged in a row and provided in a plurality of rows. The welding positions of the upper film 24 and the lower film 25 are at respective edge positions, wherein, in the upper surface of the welding position of the upper film 24, the area where the anchors are protruded is the abrupt area 22, and the area between two adjacent rows of the anchors is the welding area 21. The upper surface of the welding position of the lower film 25 is a plane to be closely attached to the lower surface of the welding position of the upper film 24, thereby realizing welding.

In order to conveniently weld the two films 20 having the above-mentioned structure, in the embodiment of the present invention, as shown in fig. 1 and 3, the welding apparatus 10 includes a heat-fusing device 30 (shown in fig. 9) and a first pressing wheel 40. The heat fusing device 30 is used for heating the welding zone 21, specifically, the heat fusing device 30 may be a thermal wedge 31, a thermal wedge knife, a heating gun, or the like, and the number of the heat fusing devices 30 may be one or more. For example, when only one heat-fusion device 30 is provided, the heat-fusion device 30 or its heating means may be positioned between the upper film 24 and the lower film 25 (as shown in fig. 4), and the lower surface of the upper film 24 at the welding position and the upper surface of the lower film 25 at the welding position are heated until the welded area 21 of the film material 20 reaches a molten state.

Of course, the heat-melting device 30 may be provided in plurality, for example, two, and the two heat-melting devices respectively heat the welding areas 21 of the upper film 24 and the lower film 25, which may be selected according to actual needs. When the welding position is heated, the upper surface of the upper film 24 and the lower surface of the lower film 25 may be heated, or the lower surface of the upper film 24 and the upper surface of the lower film 25 may be heated, and a specific heating method is not limited thereto, and it is only necessary to heat the welding area 21 of the upper film 24 and the lower film 25 to a molten state.

Referring to fig. 2 and fig. 3, the first pressing wheel 40 is used for rolling the welding area 21, and specifically, after the hot melting device 30 heats the welding area 21 of the film 20 to a molten state, the first pressing wheel 40 rolls the welding area 21 to weld the film 20. The first pressing wheel 40 can be matched with a supporting platform or other pressing wheels to realize the welding between two membranes 20 or more membranes 20.

For example, the welding device 10 may be provided with a supporting platform, the first pressing wheel 40 is disposed above the supporting platform, a gap between the first pressing wheel 40 and the supporting platform is used for a plurality of films 20 to be welded to pass through, and then the first pressing wheel 40 may roll the welding area 21 on the plurality of films 20 to realize welding between the plurality of films 20.

For another example, in another embodiment, as shown in fig. 4, the welding device 10 further includes a second pressing wheel 50, the first pressing wheel 40 and the second pressing wheel 50 are disposed opposite to each other and spaced from each other, and the first pressing wheel 40 and the second pressing wheel 50 can roll a plurality of films 20 to be welded together.

In addition, the first pressing wheel 40 may be driven by the welding device 10 to roll on the film material 20, or may be directly driven by a motor to rotate, and no specific limitation is made here, only the first pressing wheel 40 needs to roll on the film material 20 and roll the welding region 21 at the welding position.

In this embodiment, please refer to fig. 1 and fig. 3, in order to enable the welding apparatus 10 to conveniently weld the film material 20 having the protruding structure 23, an annular first relief groove 41 is further disposed on the outer periphery of the first pressing wheel 40, and the first relief groove 41 is used for allowing the first pressing wheel 40 to cross over the protruding structure 23. Specifically, when designing the first yielding groove 41, the position of the first yielding groove 41 on the first pressing wheel 40 can be further set according to the relative positions of the welding area 21 and the abrupt area 22 on the film 20. For example, when there are two welding areas 21, the abrupt area 22 is located between the two welding areas 21, and the first yielding groove 41 is correspondingly disposed at the middle position outside the first pressing wheel 40, so that the middle position of the first pressing wheel 40 crosses the protruding structure 23 in the abrupt area 22, and the portions protruding from both sides of the first yielding groove 41 are used for rolling the welding areas 21.

In addition, the depth of the first avoiding groove 41 is designed according to the height of the protruding structure 23, so as to ensure that the first pressing wheel 40 can cross the protruding structure 23 during rolling. The arrangement of the first abdicating groove 41 may affect the overall strength of the first pressing wheel 40, and a pressing wheel with a larger radius may be used to ensure the strength of the first pressing wheel 40 after the first abdicating groove 41 is formed.

It can be understood that, when the welding device 10 of the present invention is used to weld the membrane material 20 having the protruding structures 23 on the surface, the protruding structures 23 on the membrane material 20 do not need to be removed first, and the first pressing wheel 40 is directly pressed on the welding position, which is not only very convenient, but also can ensure that the effect of the protruding structures 23 on the membrane material 20 is not weakened or lost.

In one embodiment, as shown in fig. 2, in order to ensure the welding strength between the upper film 24 and the lower film 25, the welding areas 21 are provided in plurality, and the plurality of welding areas 21 can ensure a sufficient welding area between the two films 20, thereby ensuring the welding strength. The abrupt area 22 is arranged between two adjacent welding areas 21, and an anchoring object (namely a convex structure 23) is arranged in each abrupt area 22 in a protruding manner, so that the anchoring strength of the welding position of the membrane material 20 on the wall surface is ensured. With reference to fig. 1 to 3, regarding the film material 20 with the above structure, a plurality of first flanges 42 are further formed on the outer periphery of the first pressing wheel 40, and the plurality of first flanges 42 are opposite to each other at intervals along the axial direction of the first pressing wheel 40 and are used to correspond to the plurality of welding areas 21 one to one; one first relief groove 41 is formed between two adjacent first flanges 42.

Specifically, during welding, each first flange 42 correspondingly rolls one welding area 21, and the first abdicating groove 41 between two adjacent first flanges 42 can allow an anchor between two adjacent welding areas 21 to pass through, so that the welding areas 21 on the two films 20 can be accurately welded together while the first pressing wheel 40 is prevented from being influenced by the raised anchor.

In this embodiment, two welding areas 21 extending along the length or width direction are disposed on the film 20, two first flanges 42 are disposed outside the first pressing wheel 40, and the first relief groove 41 is formed between the two first flanges 42, that is, the first pressing wheel 40 is in an H-shaped roller structure. Therefore, the welding stability between the two membrane materials 20 can be ensured, and the structure of the first pressing wheel 40 is simple and easy to obtain. Of course, the first pressing wheel 40 can also be designed to have a structure with three first flanges 42 and two first yielding grooves 41, a structure with four first flanges 42 and three first yielding grooves 41, and the like according to actual conditions, and the specific configuration can be set according to actual requirements.

In an embodiment, referring to fig. 1 and 3, the welding apparatus 10 further includes a second pressing wheel 50, the second pressing wheel 50 is disposed at an interval below the first pressing wheel 40, and the first pressing wheel 40 and the second pressing wheel 50 rotate in opposite directions and roll the plurality of films 20 to be welded together. It can be understood that, compare in the roll-in scheme that adopts fixed supporting platform to cooperate first pinch roller 40, roll-in a plurality of membrane materials 20 through first pinch roller 40 and second pinch roller 50 opposite rotation, not only can follow two upper and lower directions and carry out the welding of exerting pressure to weld zone 21, guarantee the welding seam quality, can also avoid membrane material 20 because the frictional force is great and the condition of blocking.

In another embodiment, as shown in fig. 1, a plurality of second flanges 52 and a second indent 51 formed between two adjacent second flanges 52 are further formed on the outer periphery of the second pressing wheel 50, the plurality of second flanges 52 correspond to the plurality of first flanges 42 one to one, and the plurality of second indent 51 also corresponds to the plurality of first indent 41 one to one. This arrangement ensures better adhesion between the weld zone 21 of the upper membrane 24 and the weld zone 21 of the lower membrane 25, and thus ensures welding quality.

In actual welding, the welding device 10 may be driven by a motor to move, and the first pressing wheel 40 and the second pressing wheel 50 are driven to roll on the film material 20 when the welding device 10 moves. The membrane material 20 can also be pulled by an external machine or manpower, so that when the membrane material 20 passes through the gap between the first pressing wheel 40 and the second pressing wheel 50, the first pressing wheel 40 and the second pressing wheel 50 are driven to roll, the first pressing wheel 40 and the second pressing wheel 50 apply acting force to the membrane material 20 in turn, and then the welding area 21 on the membrane material 20 is subjected to roll welding.

Of course, the first pressing wheel 40 and the second pressing wheel 50 can also be directly driven to rotate by a motor, for example, in an embodiment, the welding device 10 moves relative to the film 20 along the extending direction of the welding area 21 when welding the film 20; the first pressing wheel 40 and the second pressing wheel 50 are driven by a motor to rotate, so that the rolling pressure of the first pressing wheel 40 and the second pressing wheel 50 on the membrane material 20 can be guaranteed, and the welding quality is guaranteed. In addition, because first pinch roller 40 and second pinch roller 50 are directly driven by the motor to first pinch roller 40 and second pinch roller 50 counter-rotating on membrane material 20, and then make whole welding equipment 10 need not set up other driving motor again, also can drive whole welding equipment 10 and remove along the extending direction of weld zone 21 relative membrane material 20 through the counter-rotating of first pinch roller 40 and second pinch roller 50. In this case, it is only necessary to provide the welding apparatus 10 with running wheels 80 that run on the ground to support the entire welding apparatus 10.

In order to ensure that the force application positions of the first pressing wheel 40 and the second pressing wheel 50 on the film material 20 are kept opposite up and down, the linear speeds of the first pressing wheel 40 and the second pressing wheel 50 when moving relative to the film material 20 are the same, so that the first pressing wheel 40 and the second pressing wheel 50 are kept opposite and roll the film material 20 together, and the welding quality is ensured.

In order to make the linear velocities of the first pressing wheel 40 and the second pressing wheel 50 moving relative to the film material 20 the same, two motors may be provided, and the two motors respectively drive the first pressing wheel 40 and the second pressing wheel 50, and the linear velocities of the first pressing wheel 40 and the second pressing wheel 50 are ensured by controlling the output of each motor.

Of course, only one motor may be provided, and the motor drives the first pressing wheel 40 and the second pressing wheel 50 to rotate through two transmission gears. The specific driving method may be set according to actual conditions, and is not limited again.

In one embodiment, as shown in FIG. 4, the radius of second puck 50 is smaller than the radius of first puck 40. It can be understood that when the radius of the second pressing wheel 50 is smaller than the radius of the first pressing wheel 40, the opening and closing range of the first pressing wheel 40 can be increased, so that the operation of the worker during welding by using the welding device 10 can be more convenient.

It should be noted that, when the radius of the second pressing wheel 50 is smaller than the radius of the first pressing wheel 40, in order to ensure that the linear velocities of the first pressing wheel 40 and the second pressing wheel 50 when moving relative to the film material 20 are the same, the number of teeth or the radius of the transmission sprocket between the first pressing wheel 40 and the second pressing wheel 50 may be adjusted to reduce the rotational speed of the first pressing wheel 40, or increase the rotational speed of the second pressing wheel 50 until the linear velocities of the first pressing wheel 40 and the second pressing wheel 50 are the same.

In one embodiment, as shown in fig. 5, the welding apparatus 10 further includes a first frame 60 and a second frame 70 mounted on the first frame 60, the first frame 60 is mounted with running wheels 80 supporting the first frame 60, and the first pressing wheel 40 and the heat-fusing device 30 are mounted on the second frame 70.

When the first frame 60 walks on a walking surface (such as the ground, a working surface, etc.) on which the film material 20 is placed, a gap between the bottom of the first frame 60 and the walking surface can be passed by the protruding structure 23 on the film material 20, so that the protruding structure 23 below the first frame 60 is prevented from affecting the movement of the whole welding equipment 10.

The second frame 70 is connected to the side of the first frame 60 by the side thereof, and is spaced apart from the first frame 60, and the film 20 with the protruding structure 23 can pass through the gap between the second frame 70 and the first frame 60.

In this embodiment, the first frame 60 and the second frame 70 move on the ground by using the first pressing wheel 40 and the second pressing wheel 50 as driving wheels and using the traveling wheels 80 of the first frame 60 as driven wheels. That is, when the first pressing wheel 40 and the second pressing wheel 50 rotate in opposite directions to roll the film material 20, the first frame 60 and the second frame 70 are driven to move, and the first frame 60 and the second frame 70 move on the ground by using the traveling wheels 80 as supports.

In the present embodiment, as shown in fig. 5 and 6, taking as an example that the second frame 70 is connected to the right side of the first frame 60 through the right side thereof, the welding side of the upper film 24 (which refers to the side where the welding position thereof is located, the same applies hereinafter) extends from the left side of the entire welding apparatus 10 to between the first frame 60 and the second frame 70 at the time of welding. The welding side of the lower film 25 may be divided into a section to be welded 251 and a section to be welded 252 along the extending direction of the welding area 21, the section to be welded 251 is near the front end of the first frame 60 and extends from the right side of the whole welding device 10 to the lower side of the first frame 60, and a gap between the bottom of the first frame 60 and the traveling surface is provided for the projection structure 23 on the section to be welded 251 to pass through. The welding section 252 extends from the section 251 to be welded to the first frame 60 and the second frame 70 in the extending direction of the welding area 21.

The welding section 252 of the upper film 24 and the lower film 25 is heated by the heat fusing device 30 between the first frame 60 and the second frame 70 and is rolled by the first pressing wheel 40 and the second pressing wheel 50, thereby achieving welding between the upper film 24 and the welding section 252. And as the welding apparatus 10 moves, the to-be-welded section 251 of the lower film 25 gradually becomes the under-welded section 252 between the first frame 60 and the second frame 70 and is welded with the upper film 24 until the welding is completed.

Based on the above embodiment, since the to-be-welded section 251 of the lower film 25 extends to below the first frame 60, in order to avoid the protruding structures 23 on the lower film 25 from affecting the rolling of the running wheels 80, in an embodiment, as shown in fig. 5, the first frame 60 has opposite front and rear ends along the running direction thereof, the running wheels 80 include the first running wheel 81 and the second running wheel 82 which are respectively arranged at the front end and at two sides of the first frame 60, and the first running wheel 81 and/or the second running wheel 82 can roll between two adjacent protruding structures 23.

In this embodiment, the first running wheels 81 are located on the left side of the first frame 60, and the second running wheels 82 are located on the right side of the second frame 70. The to-be-welded section 251 of the lower film 25 extends from the right side of the first frame 60 to the lower side of the first frame 60, and the second traveling wheels 82 roll on the lower film 25. And the thickness of the second walking wheel 82 in the axial direction is smaller than the gap between two adjacent protruding structures 23, so that the second walking wheel can walk between two adjacent protruding structures 23 in a rolling manner, the protruding structures 23 are prevented from influencing the walking of the whole welding equipment 10, and the protruding structures 23 on the lower film 25 are used as a guide.

Of course, in this embodiment, the radius of the second running wheel 82 is at least greater than the height of the raised structure 23, thereby raising the bottom of the first frame 60 such that the gap between the bottom of the first frame 60 and the running surface is sufficient for the raised structure 23 of the lower film 25 to pass through.

In this embodiment, since the first running wheels 81 are located below the upper film 24 during welding, in order to prevent the first running wheels 81 from scratching the upper film 24, as shown in fig. 5, the radius of the first running wheels 81 can be set to be smaller than the radius of the second running wheels 82, and the height of the rotating shaft thereof is also lower than the height of the rotating shaft of the second running wheels 82, so that the second running wheels 82 only need to play a supporting role. And then the clearance between the outer peripheral surface of the first running wheel 81 and the upper film 24 is increased, and the condition that the upper film 24 is scratched by the first running wheel 81 in the welding process is avoided.

In an embodiment, as shown in fig. 7 and 8, the heat melting device 30 includes a thermal wedge 31, the thermal wedge 31 has an upper heating surface 311 and a lower heating surface 312, the upper heating surface 311 is recessed with a third relief groove 313 corresponding to the abrupt zone 22 during welding, and the lower heating surface 312 is recessed with a fourth relief groove 314 corresponding to the third relief groove 313.

In the present embodiment, the thermal wedge 31 is located between the upper film 24 and the lower film 25 at the time of welding, and heats the lower surface of the upper film 24 at the welding position by its upper heating surface 311, and heats the upper surface of the lower film 25 at the welding position by its lower heating surface 312. And the upper heating surface 311 is concavely provided with a third abdicating groove 313 corresponding to the abrupt area 22, so that the thermal wedge 31 does not heat the abrupt area 22 where the protruding structure 23 is located, and the influence of the protruding structure 23 on the connection strength between the film material 20 after the abrupt area 22 is heated is avoided. Similarly, the fourth relief groove 314 corresponding to the third relief groove 313 is also recessed in the lower heating surface 312, and the region other than the weld zone 21 is not heated when the lower film 25 is heated.

In another embodiment, as shown in FIG. 7, an upper guide surface 315 is formed at an end of thermal wedge 31 close to first puck 40, where upper guide surface 315 is engaged with upper heating surface 311 and gradually inclines toward a side where second puck 50 is located in a direction away from upper heating surface 311;

in another embodiment, as shown in FIG. 7, hot wedge 31 further has a lower guide surface 316 formed at an end close to second puck 50, where lower guide surface 316 is engaged with lower heating surface 312 and gradually inclines toward a side where first puck 40 is located in a direction away from lower heating surface 312.

It can be understood that, as shown in fig. 4, by providing the upper guide surface 315 and the lower guide surface 316 on the thermal wedge 31, the welding device 10 can well guide the upper film 24 and the lower film 25 between the first pressing wheel 40 and the second pressing wheel 50 while moving, so as to weld the upper film 24 and the lower film 25.

In an embodiment, as shown in fig. 9 and 10, the heat-melting device 30 further includes a fixing base 32 mounted on the second frame 70, wherein the fixing base 32 has a side 321 connected to the heat wedge 31 and a bottom 322 facing the lower heating surface 312. In this embodiment, it can be understood that, because the fixing seat 32 is located above the lower film 25 during welding, the protruding structure 23 on the lower film 25 may push against the bottom surface 322 of the fixing seat 32, which may cause poor contact between the lower film 25 and the lower heating surface 312 of the thermal wedge 31, and the contact may not be reached, which may ultimately affect the welding quality. Therefore, in order to avoid this, the relief gap 90 is formed by having a height difference in the vertical direction between the lower heating surface 312 and the bottom surface 322. The relief gap 90 is located below the fixed seat 32 and on one side of the thermal wedge 31, and is used for allowing the protruding structure 23 on the film 20 located below the bottom surface 322 to pass through, so as to prevent the protruding structure 23 on the lower film 25 from pushing against the bottom surface 322 of the fixed seat 32.

In design, the bottom surface 322 of the fixing base 32 can be used as a reference surface, and a height difference between the lower heating surface 312 and the bottom surface 322 can be set, wherein the height difference is greater than the height of the protruding structures 23 on the lower film 25.

In an embodiment, as shown in fig. 11 and 12, a surface of the first frame 60 facing away from the second frame 70 is further provided with a first guide rod 61, and the first guide rod 61 extends in a direction away from the second frame 70 and can pass through a gap between two adjacent protruding structures 23 on the film material 20.

In an embodiment, as shown in fig. 11 and 12, a surface of the second frame 70 facing the first frame 60 is further provided with a second guide bar 71, and the second guide bar 71 extends in a direction close to the first frame 60 and can pass through a gap between two adjacent protruding structures 23 on the film material 20.

It can be understood that, during welding, the first guide rod 61 and the second guide rod 71 can move between two adjacent (or two columns of) protruding structures 23, so that the protruding structures 23 are used for guiding the welding device 10, and a stable overlapping width between the upper film 24 and the lower film 25 is ensured, so that high welding quality is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.