CN220129553U - Center joint hot-melt welding equipment - Google Patents

Abstract

The utility model relates to a center joint hot-melt welding device, which comprises a machine table provided with a welding station; the positioning mechanism is arranged at the welding station and comprises a welding positioning module and an end positioning module, the welding positioning module is arranged at one side of the filter material travelling path, and the end positioning module is arranged in the filter material travelling path; the traction moving mechanism is arranged at the welding station; the welding actuating mechanism is arranged at the welding station and is positioned at the opposite side of the traction moving mechanism, and the welding actuating mechanism can be matched with the traction moving mechanism to compress the filter material, so that the traction moving mechanism can draw the filter material to move through the welding station, and the welding actuating mechanism can finish continuous hot-melt welding on the center seam edge of the filter material. Under the cooperation of the positioning mechanism, the traction moving mechanism and the welding executing mechanism, continuous hot-melting welding of the center seam folded edge can be automatically completed, the alignment degree of the center seam folded edge is high, the filter cylinder forming quality is good, excessive human intervention is not needed, the labor intensity of workers is greatly reduced, and meanwhile, the production efficiency is improved.

Description

Center joint hot-melt welding equipment

Technical Field

The utility model relates to the technical field of filter material processing, in particular to a center joint hot-melt welding device.

Background

At present, a plurality of various automatic processing equipment is equipped in the industries of manufacturing, chemical industry, agriculture and animal husbandry and the like to replace part or all of manual labor, so as to achieve the effects of improving quality, enhancing efficiency and reducing cost. In practical production, the processing equipment inevitably generates some toxic and harmful substances such as dust, peculiar smell gas and the like, and in order to avoid polluting and injuring the surrounding environment and staff, the toxic and harmful substances are required to be filtered and cleaned by using a filtering device before being discharged.

In general, a filter cartridge is a key component of a filtering device, and plays a role in directly filtering toxic and harmful substances. The filter cartridge is generally formed by bending straight filter paper into a cylinder, then aligning, welding and fixing the center seam folded edges, the operation of aligning, welding and fixing the center seam folded edges still depends on manual section-by-section kneading and welding by workers in the current industry, the center seam folded edges are easy to align and poor in degree due to manual errors, and then the adverse phenomena of oversmelting or missed welding and the like occur, so that the forming quality of the filter cartridge is influenced, the labor intensity of manual operation is high, and the production efficiency is low.

Disclosure of Invention

Based on the problems, such as poor filter cartridge forming quality, high labor intensity and low production efficiency caused by poor center seam flanging alignment degree, the center seam hot-melt welding equipment is necessary to be provided.

The utility model provides a center seam hot-melt welding device, which comprises:

the machine is provided with a welding station;

the positioning mechanism is arranged at the welding station and comprises a welding positioning module and an end positioning module, the welding positioning module is arranged at one side of a filter material travelling path and used for aligning a center joint hem of a filter material, the end positioning module is arranged in the filter material travelling path and used for aligning the circumferential end of the filter material, and the end positioning module can enter or exit the welding station;

the traction moving mechanism is arranged at the welding station; the method comprises the steps of,

the welding execution mechanism is arranged at the welding station and is positioned at the opposite side of the traction moving mechanism, and the welding execution mechanism can be matched with the traction moving mechanism to compress the filter material, so that the traction moving mechanism can draw the filter material to move through the welding station, and meanwhile, the welding execution mechanism can finish continuous hot-melt welding on the middle seam edge folding of the filter material.

The center seam hot-melt welding equipment of the scheme is applied to filter cartridge forming processing occasions, and particularly, center seam folded edges of the filter materials which are bent into a cylinder shape are aligned and then fixed by hot-melt welding, so that a filter cartridge finished product with a stable structure is formed. During processing, the filter material bent into a cylinder shape is pushed into a positioning mechanism, the center seam flanging of the filter material is aligned through a welding positioning module, and the circumferential end part of the filter material is aligned through an end part positioning module, so that the position condition of hot-melting welding is formed; and then respectively starting the welding executing mechanism and the traction moving mechanism, enabling the filter material to advance forward at a constant speed under the traction drive of the traction moving mechanism, and simultaneously applying high-temperature heat to the aligned center seam folded edges by the welding executing mechanism, so that continuous hot-melting welding of the center seam folded edges can be completed, and after the filter material is withdrawn from the welding station, obtaining a filter cartridge finished product meeting the quality requirement. Compared with the prior art, the continuous hot-melt welding of the center seam folded edge can be automatically completed under the cooperative cooperation of the positioning mechanism, the traction moving mechanism and the welding executing mechanism, the alignment degree of the center seam folded edge is high, the filter cylinder forming quality is good, excessive human intervention is not needed, the labor intensity of workers is greatly reduced, and meanwhile, the production efficiency is improved.

The technical scheme of the utility model is further described as follows:

in one embodiment, the welding positioning module comprises a first positioning baffle, a second positioning baffle and a connecting assembly, wherein the first positioning baffle is connected with the second positioning baffle through the connecting assembly, and a positioning seam is formed by matching the first positioning baffle with the second positioning baffle.

In one embodiment, the connecting assembly comprises a connecting block and a fastening connecting piece, the connecting block is arranged between the first positioning baffle and the second positioning baffle, and the fastening connecting piece is arranged on the first positioning baffle in a penetrating manner, the connecting block and the second positioning baffle in a penetrating manner and then movably connected with the machine table, so that the welding positioning module can perform horizontal interval adjustment relative to the welding executing mechanism.

In one embodiment, the welding executing mechanism comprises a hot melting driver and a hot melting mold, the hot melting driver is arranged on the machine table, the hot melting mold is electrically connected with the hot melting driver and is arranged below the welding positioning module, and the hot melting mold can transfer heat energy to the welding positioning module.

In one embodiment, the end positioning module comprises a positioning driver and a positioning stop block, wherein the positioning driver is arranged on the machine table and can output a reciprocating driving force close to or far away from a filter material travelling path, and the positioning stop block is connected with a telescopic driving shaft of the positioning driver.

In one embodiment, the end positioning module further comprises a detection sensor, wherein the detection sensor is arranged on the machine and is arranged below or on the side surface of the filter material travelling path, and the detection sensor is electrically connected with the positioning driver.

In one embodiment, the traction moving mechanism comprises a traction motor and a traction wheel, the traction motor is arranged on the machine table, the traction wheel is connected with a power shaft of the traction motor, and the circumference of the traction wheel can be in pressure connection with the filter material.

In one embodiment, the circumference of the traction wheel is provided with concave-convex grains; and/or the number of the groups of groups,

the traction moving mechanism further comprises a height adjusting cylinder, and the height adjusting cylinder is arranged on the machine table and connected with the traction motor or the traction wheel so as to drive the traction wheel to be close to or far away from the welding executing mechanism.

In one embodiment, the center seam hot-melt welding device further comprises a first guide plate and a second guide plate, wherein the first guide plate and the second guide plate are arranged on the machine table at intervals side by side and are positioned at the upstream of the welding station, and the first guide plate and the second guide plate are matched to form a guide channel;

the first guide plate and/or the second guide plate can be movably arranged so that the width of the guide-in channel can be adjusted.

In one embodiment, the center seam hot-melt welding device further comprises a third guide plate and a fourth guide plate, wherein the third guide plate and the fourth guide plate are arranged on the machine table at intervals side by side and positioned at the downstream of the welding station, and the third guide plate and the fourth guide plate are matched to form a guiding-out channel;

the third guide plate and/or the fourth guide plate can be movably arranged so that the width of the guiding-out channel can be adjusted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a seam welding apparatus according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.

Fig. 3 is a schematic structural diagram of another view of fig. 1.

Reference numerals illustrate:

100. center joint hot melt welding equipment; 10. a machine table; 11. a welding station; 20. a positioning mechanism; 21. a welding positioning module; 211. a first positioning baffle; 212. a second positioning baffle; 213. a connection assembly; 22. an end positioning module; 221. a positioning driver; 222. positioning a stop block; 223. a detection sensor; 30. a traction movement mechanism; 31. a traction motor; 32. a traction wheel; 321. concave-convex lines; 33. a height adjusting cylinder; 40. a welding executing mechanism; 41. a hot melt driver; 42. a heat fusion mold; 50. a first guide plate; 60. a second guide plate; 70. a third guide plate; 80. a fourth guide plate; 200. and (5) filtering materials.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus 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 utility model.

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

In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If 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, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1 and 3, a center seam hot-melt welding apparatus 100 according to an embodiment of the present utility model includes a machine 10, a positioning mechanism 20, a traction moving mechanism 30, and a welding actuator 40. Wherein, the machine 10 is provided with a welding station 11, and the welding station 11 is a region for performing hot-melt welding on the center seam flanging of the filter material 200.

In this embodiment, the machine 10 is formed by assembling a support frame and a carrier plate, and has simple structure and processing and low manufacturing cost. According to practical needs, the machine 10 can be designed to be fixed, for example, a foot cup can be arranged at the bottom of the machine 10; or is designed to be movable, such as a roller mounted on the bottom of the machine 10.

The positioning mechanism 20 is arranged at the welding station 11, the positioning mechanism 20 comprises a welding positioning module 21 and an end positioning module 22, the welding positioning module 21 is arranged at one side of the travelling path of the filter material 200 and is used for aligning the center seam edge of the filter material 200, the end positioning module 22 is arranged in the travelling path of the filter material 200 and is used for aligning the circumferential end of the filter material 200, and the end positioning module 22 can enter or exit the welding station 11; the traction moving mechanism 30 is arranged at the welding station 11; the welding executing mechanism 40 is arranged at the welding station 11 and is positioned at the opposite side of the traction moving mechanism 30, and the welding executing mechanism 40 can be matched with the traction moving mechanism 30 to compress the filter material 200, so that the traction moving mechanism 30 can draw the filter material 200 to move through the welding station 11, and meanwhile, the welding executing mechanism 40 can finish continuous hot-melt welding on the center seam edge of the filter material 200.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: the center seam hot-melt welding equipment 100 of the above scheme is applied to the occasion of filter cartridge forming processing, specifically, the center seam folded edges of the filter material 200 which are bent into a cylinder shape are aligned and then hot-melt welded and fixed, so as to form a filter cartridge finished product with stable structure. During processing, the filter material 200 bent into a cylindrical shape is pushed into the positioning mechanism 20, the center seam folded edges of the filter material 200 are aligned through the welding positioning module 21, and the circumferential end parts of the filter material 200 are aligned through the end part positioning module 22, so that the position condition of hot-melting welding is formed; and then respectively starting the welding executing mechanism 40 and the traction moving mechanism 30, and enabling the filter material 200 to advance forwards at a constant speed under the traction drive of the traction moving mechanism 30, and simultaneously, applying high-temperature heat to the aligned center seam folded edges by the welding executing mechanism 40, so that continuous hot-melt welding of the center seam folded edges can be finished, and after the filter material 200 is withdrawn from the welding station 11, a filter cartridge finished product meeting the quality requirement can be prepared.

Compared with the prior art, the continuous hot-melt welding of the center seam folded edge can be automatically completed under the cooperative cooperation of the positioning mechanism 20, the traction moving mechanism 30 and the welding executing mechanism 40, the alignment degree of the center seam folded edge is high, the filter cylinder forming quality is good, excessive human intervention is not needed, the labor intensity of workers is greatly reduced, and meanwhile, the production efficiency is improved.

In this embodiment, a through groove penetrating through the thickness direction of the table top is provided at the table top of the welding station 11 of the machine table 10, and the through groove communicates the traction moving mechanism 30 and the welding executing mechanism 40 which are arranged up and down, so that the traction moving mechanism 30 and the welding executing mechanism 40 can compress the filter material 200, and the welding executing mechanism 40 synchronously performs continuous hot-melt welding on the center seam edge of the filter material 200 while the traction moving mechanism 30 pulls the filter material 200 to move.

With continued reference to fig. 2, in some embodiments, the welding positioning module 21 includes a first positioning baffle 211, a second positioning baffle 212, and a connecting assembly 213, where the first positioning baffle 211 is connected to the second positioning baffle 212 through the connecting assembly 213, and a positioning seam is formed between the first positioning baffle 211 and the second positioning baffle 212. When the filter material 200 is manually pushed into the welding station 11 or automatically pushed into the welding station 11 by mechanical equipment, the preliminarily aligned center seam folded edges enter the positioning seams, and at this time, main body parts of the filter material 200 positioned at the left side and the right side of the center seam folded edges are contacted with and tightly attached to the plate surfaces of the first positioning baffle 211 and the second positioning baffle 212, so that the positioning correction effect of the first positioning baffle 211 and the second positioning baffle 212 is received, and the center seam folded edges with dislocation can be aligned quickly and accurately.

Further, the connecting assembly 213 includes a connecting block and a fastening connection piece, the connecting block is disposed between the first positioning baffle 211 and the second positioning baffle 212, and the fastening connection piece (such as a threaded connection component such as a bolt) is disposed through the first positioning baffle 211, the connecting block and the second positioning baffle 212 and movably connected with the machine 10, so that the welding positioning module 21 can perform horizontal spacing adjustment relative to the welding actuator 40.

In actual production, the heights of the middle seam folds of the filter materials 200 with different specifications and sizes are different, and at the moment, the horizontal distance between the welding positioning module 21 and the welding execution mechanism 40 can be adjusted by horizontally moving the connecting assembly 213, so that the welding positioning module 21 can adapt to the positioning requirements of the middle seam folds with different heights.

In some embodiments, the traction moving mechanism 30 includes a traction motor 31 and a traction wheel 32, the traction motor 31 is mounted on the machine 10, the traction wheel 32 is connected with a power shaft of the traction motor 31, and the circumference of the traction wheel 32 can be in pressure connection with the filter material 200. The fusing actuator 40 includes a fuse driver 41 and a fuse 42, the fuse driver 41 is mounted on the machine 10, the fuse 42 is electrically connected with the fuse driver 41 and is disposed below the fusing and positioning module 21, and the fuse 42 can transfer heat energy to the fusing and positioning module 21.

After the filter material 200 is positioned, the upper and lower surfaces of the center seam folded edge are respectively pressed by the traction wheel 32 and the heat fusion die 42. The traction motor 31 drives the traction wheel 32 to rotate, meanwhile, the hot melt driver 41 transmits heat energy to the hot melt mold 42, the traction wheel 32 stably drives the filter material 200 to advance under the action of friction force, and meanwhile, the hot melt mold 42 can realize continuous hot melt welding on the center seam flanging. The traction moving mechanism 30 and the welding executing mechanism 40 have high coordination degree and good synchronism, and the hot-melting welding quality of the center seam flanging is ensured.

In this embodiment, in order to match with the rotation of the traction wheel 32, the heat melting mold 42 preferably adopts a circular mold, and the traction wheel 32 drives the filter material 200 to advance, and simultaneously, the circular mold can synchronously follow rotation under the action of the friction force applied by the filter material 200, so that the abrasion to the filter material 200 is more favorable to be reduced, and the molding quality of the filter cartridge is ensured.

For example, the hot melt driver 41 in this embodiment employs an ultrasonic generator, which can generate radial ultrasonic heat energy by the hot melt die 42, and further, the center seam edge of the filter material 200 is fixed by hot melt welding.

With continued reference to fig. 2, in some embodiments, the end positioning module 22 includes a positioning driver 221 and a positioning stop 222, where the positioning driver 221 is installed on the machine 10 and can output a reciprocating driving force near or far from the travelling path of the filter material 200, and the positioning stop 222 is connected to a telescopic driving shaft of the positioning driver 221. In the initial state, the positioning driver 221 drives the positioning stop block 222 to extend into the travelling path of the filter material 200, and the end part of the filter material 200 entering the welding station 11 can be abutted, so that the circumferential end surface of the filter material 200 is aligned, the pose correction of the filter material 200 is facilitated, and the center seam flanging is aligned. Before the formal hot-melt welding process, the positioning driver 221 drives the positioning stop block 222 to retract and withdraw from the travelling path of the filter material 200, so as to avoid blocking interference to the movement of the filter material 200.

Further, the end positioning module 22 further includes a detection sensor 223, the detection sensor 223 is mounted on the machine 10 and is located below or beside the travelling path of the filter material 200, and the detection sensor 223 is electrically connected to the positioning driver 221. The filter material 200 subjected to the continuous hot-melting welding of the center seam flanging continuously moves out of the welding station 11, and when the detection sensor 223 detects that the current filter material 200 completely exits from the welding station 11, a signal is fed back to the positioning driver 221, and the positioning driver 221 drives the positioning stop block 222 to fall down again, so that blocking connection positioning is conveniently formed on the end part of the next filter material 200.

Alternatively, the positioning driver 221 may be any one of a cylinder, an electric push rod, and the like, and specifically may be flexibly selected according to actual needs.

With continued reference to fig. 2, the traction wheel 32 has a concave-convex pattern 321 around its circumference. The concave-convex lines 321 can increase the contact friction force between the traction wheel 32 and the filter material 200, thereby preventing the traction wheel 32 from slipping and affecting the hot-melt welding continuity of the center seam hemming. For example, the concave-convex pattern 321 in the present embodiment includes a plurality of projections arranged at intervals along the circumferential direction of the traction wheel 32. Preferably, the top surface of the protrusion is planar, so that the contact area with filter media 200 can be increased, friction force can be increased, and crushing or scraping of the surface of filter media 200 can be avoided.

In addition, the traction moving mechanism 30 further includes a height adjusting cylinder 33, and the height adjusting cylinder 33 is mounted on the machine 10 and connected to the traction motor 31 or the traction wheel 32 to drive the traction wheel 32 to approach or separate from the welding actuator 40. The height adjusting cylinder 33 can flexibly adjust the distance between the traction wheel 32 and the hot melting mold 42, so that the compression requirements of filter materials 200 with different thicknesses can be adapted. Alternatively, the height adjusting cylinder 33 may be any one of a cylinder, an electric push rod, and the like, and specifically may be flexibly selected according to actual needs.

With continued reference to fig. 1, in any of the foregoing embodiments, the seam welding apparatus 100 further includes a first guide plate 50 and a second guide plate 60, where the first guide plate 50 and the second guide plate 60 are disposed on the machine 10 side by side at a distance upstream of the welding station 11, and the first guide plate 50 and the second guide plate 60 cooperate to form a guide channel; the first guide 50 and/or the second guide 60 may be movably disposed so that the width of the introduction path may be adjustable. The center seam hot-melt welding device 100 further comprises a third guide plate 70 and a fourth guide plate 80, wherein the third guide plate 70 and the fourth guide plate 80 are arranged on the machine table 10 at intervals side by side and positioned at the downstream of the welding station 11, and the third guide plate 70 and the fourth guide plate 80 are matched to form a guiding-out channel; the third guide plate 70 and/or the fourth guide plate 80 may be movably arranged such that the width of the lead-out channel is adjustable.

The filter material 200 moves in the guide channel at the welding station 11, and can be positioned and guided by the first guide plate 50 and the second guide plate 60 at the left side and the right side, so that preliminary alignment of the center seam flanging is facilitated, and the filter material 200 can be moved into the welding station 11 more accurately. The third guide plate 70 and the fourth guide plate 80 arranged at the rear end can enable the filter material 200 which is welded to move stably along a linear path, ensure the stability of the position of the part of the filter material 200 which is still positioned in the welding station 11, and ensure the continuous welding quality of the center seam hemming. In addition, the first guide plate 50 and the second guide plate 60 and the third guide plate 70 and the fourth guide plate 80 can move toward and away from each other, flexible adjustment of the width of the inlet channel and the outlet channel can be realized, and the filter material 200 with different widths is suitable.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A center seam hot melt welding apparatus, comprising:

the machine is provided with a welding station;

the positioning mechanism is arranged at the welding station and comprises a welding positioning module and an end positioning module, the welding positioning module is arranged at one side of a filter material travelling path and used for aligning a center joint hem of a filter material, the end positioning module is arranged in the filter material travelling path and used for aligning the circumferential end of the filter material, and the end positioning module can enter or exit the welding station;

the traction moving mechanism is arranged at the welding station; the method comprises the steps of,

the welding execution mechanism is arranged at the welding station and is positioned at the opposite side of the traction moving mechanism, and the welding execution mechanism can be matched with the traction moving mechanism to compress the filter material, so that the traction moving mechanism can draw the filter material to move through the welding station, and meanwhile, the welding execution mechanism can finish continuous hot-melt welding on the middle seam edge folding of the filter material.

2. The center seam hot-melt welding apparatus of claim 1, wherein the welding positioning module comprises a first positioning baffle, a second positioning baffle and a connecting assembly, the first positioning baffle is connected with the second positioning baffle through the connecting assembly, and a positioning seam is formed by cooperation between the first positioning baffle and the second positioning baffle.

3. The center seam hot-melt welding equipment of claim 2, wherein the connection assembly comprises a connection block and a fastening connection piece, the connection block is arranged between the first positioning baffle and the second positioning baffle, and the fastening connection piece is arranged on the first positioning baffle, the connection block and the second positioning baffle in a penetrating manner and is movably connected with the machine table, so that the welding positioning module can perform horizontal interval adjustment relative to the welding execution mechanism.

4. The center seam hot melt welding equipment of claim 1, wherein the welding actuator comprises a hot melt driver and a hot melt die, the hot melt driver is mounted on the machine, the hot melt die is electrically connected with the hot melt driver and is arranged below the welding positioning module, and the hot melt die can transfer heat energy to the welding positioning module.

5. The center seam hot melt welding equipment of claim 1, wherein the end portion positioning module comprises a positioning driver and a positioning stop block, the positioning driver is arranged on the machine table and can output a reciprocating driving force close to or far away from a filter material travelling path, and the positioning stop block is connected with a telescopic driving shaft of the positioning driver.

6. The center seam welding apparatus of claim 5, wherein the end positioning module further comprises a detection sensor mounted on the machine and below or to the side of the filter material travel path, the detection sensor being electrically connected to the positioning driver.

7. The center seam hot-melt welding equipment according to claim 1, wherein the traction moving mechanism comprises a traction motor and a traction wheel, the traction motor is arranged on the machine table, the traction wheel is connected with a power shaft of the traction motor, and the circumference of the traction wheel can be in pressure connection with the filter material.

8. The center seam hot-melt welding apparatus according to claim 7, wherein the traction wheel has a concave-convex grain on the periphery thereof; and/or the number of the groups of groups,

the traction moving mechanism further comprises a height adjusting cylinder, and the height adjusting cylinder is arranged on the machine table and connected with the traction motor or the traction wheel so as to drive the traction wheel to be close to or far away from the welding executing mechanism.

9. The seam welding apparatus of claim 1, further comprising a first guide plate and a second guide plate disposed side-by-side in a spaced relationship on the machine and upstream of the welding station, the first guide plate and the second guide plate cooperating to form an introduction channel therebetween;

the first guide plate and/or the second guide plate can be movably arranged so that the width of the guide-in channel can be adjusted.

10. The seam welding apparatus of claim 9, further comprising a third guide plate and a fourth guide plate disposed side-by-side on the machine at a spaced apart location downstream of the welding station, the third guide plate and the fourth guide plate cooperating to form a lead-out channel therebetween;

the third guide plate and/or the fourth guide plate can be movably arranged so that the width of the guiding-out channel can be adjusted.