CN113351432A

CN113351432A - Hot melt adhesive cloth base adhesive tape coating mechanism

Info

Publication number: CN113351432A
Application number: CN202110910975.8A
Authority: CN
Inventors: 吴春飞
Original assignee: Nantong Langdi Machinery Technology Co ltd
Current assignee: Nantong Langdi Machinery Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-09-07
Anticipated expiration: 2041-08-10
Also published as: CN113351432B

Abstract

The invention discloses a hot melt adhesive fabric tape coating mechanism which comprises a rack, a main impeller pump, a slave impeller pump and a coating port, wherein the side walls of the main impeller pump and the slave impeller pump are fixedly connected with a fixed support, the main impeller pump, the slave impeller pump and the coating port are communicated through a glue conveying pipe, a transmission mechanism is arranged between the main impeller pump and the slave impeller pump, an L-shaped plate is fixedly arranged on the side wall of the slave impeller pump at the same side with the transmission mechanism, a pressure adjusting mechanism is arranged on the L-shaped plate, and the pressure adjusting mechanism comprises a conversion assembly, a telescopic assembly and a centrifugal assembly. The invention relates to the technical field of textile processing equipment, and the hot melt adhesive fabric base adhesive tape coating mechanism can dynamically adjust the delivery rate of a hot melt adhesive, and can mark the change times and change amplitude of the pressure of a pump liquid, so that the coating qualification rate can be quickly judged.

Description

Hot melt adhesive cloth base adhesive tape coating mechanism

Technical Field

The invention relates to the technical field of textile processing equipment, in particular to a hot melt adhesive fabric-based adhesive tape coating mechanism.

Background

A coating mechanism: the method is characterized in that a solid hot melt adhesive is melted, and the melted adhesive which becomes liquid is conveyed to an adhesive coating device through a pressurizing device to coat a substrate.

When the existing coating mechanism carries out coating operation, molten glue is conveyed to a glue coating opening through a conveying pipe through a pump to spray a substrate, and then a scraper blade is used for scraping evenly, however, when the glue flows in the conveying pipe, the conveying pressure is gradually reduced due to the impact of a pipeline or the influence of factors such as external temperature, and the like, so that the glue amount sprayed by the glue coating opening is uneven, even the glue does not flow out due to short stagnation, and the substrate cannot be uniformly coated by the scraper blade; in addition, a mechanism for timely feedback is lacked, so that the rapid qualification judgment of the base material subjected to gluing by the staff is ensured, and the trouble is brought to the subsequent detection of the qualification rate of the base material.

Disclosure of Invention

The invention aims to provide a hot melt adhesive fabric-based adhesive tape coating mechanism which can ensure that the coating amount is stable and the qualification rate of a base material can be fed back in time.

In order to achieve the purpose, the invention adopts the following technical scheme:

a hot melt adhesive cloth-based adhesive tape coating mechanism comprises a rack, a main impeller pump, a slave impeller pump and a coating port, wherein the side walls of the main impeller pump and the slave impeller pump are fixedly connected with a fixing support, the other side of the fixing support is fixed on the side wall of the rack through a bolt, the upper end of the main impeller pump is provided with a glue conveying port, the main impeller pump, the slave impeller pump and the coating port are communicated through a glue conveying pipe, a transmission mechanism is arranged between the main impeller pump and the slave impeller pump, an L-shaped plate is fixedly arranged on the side wall of the slave impeller pump at the same side of the transmission mechanism, a pressure adjusting mechanism is arranged on the L-shaped plate, and the pressure adjusting mechanism comprises a conversion assembly, a telescopic assembly and a centrifugal assembly;

the conversion assembly is arranged between the transmission mechanism and the L-shaped plate and is used for switching and transmitting the transmission power of the slave vane pump;

the telescopic assembly is arranged on the outer side wall of the L-shaped plate and used for driving the conversion assembly to perform switching work;

and the centrifugal assembly is arranged right above the telescopic assembly and is connected with the L-shaped plate, and is used for providing power for the telescopic assembly to displace in the vertical direction.

Preferably, the conversion subassembly includes the conversion lantern ring, pin, conversion spring, spline, run through its lateral wall and be connected with driven spindle from the output of impeller pump, and driven spindle runs through the lateral wall setting of L shaped plate, spline groove has down been seted up in driven spindle's the outside, the inner circle of the conversion lantern ring is provided with the spline, driven spindle is provided with the pin between each notch in spline groove down, driven spindle's the outside is still overlapped and is equipped with the conversion spring, and the both ends of conversion spring offset with the lateral wall of the conversion lantern ring and pin respectively, drive mechanism includes from the driving wheel, and has seted up spline groove on the lateral wall from the driving wheel, the spline sets up with last spline groove and lower spline groove sliding fit.

Preferably, flexible subassembly includes clamp plate, sloping block, connecting rod, T shape guide arm, compression spring, guide block, the bar mouth has been run through to one side of L shaped plate, sliding connection has the connecting rod on the bar mouth, the connecting rod is close to the one end fixedly connected with sloping block of the conversion lantern ring, and the inclined plane of sloping block is the acute angle with the contained angle of horizontal plane, the fixed clamp plate that is provided with of the other end of connecting rod, the lateral wall symmetry of L shaped plate is provided with two guide blocks, the T shape guide arm runs through the lateral wall of guide block and rather than sliding connection, the outside of T shape guide arm is located to the compression spring cover.

Preferably, centrifugal subassembly includes the centrifugal lantern ring, connecting block, telescopic tube and telescopic compression bar, the fixed outside at driven spindle of establishing of the fixed cover of centrifugal lantern ring, the outside of the centrifugal lantern ring is encircleed the array and is provided with a plurality of connecting blocks, and telescopic tube's blind end rotates with the lateral wall of connecting block to be connected, telescopic tube's open end sliding connection has telescopic compression bar, and the fixed telescopic spring that is provided with in the telescopic tube, telescopic spring and telescopic compression bar fixed connection.

Preferably, the pressing plate is further provided with a marking mechanism, the marking mechanism comprises a marking plate, a guide assembly, a helical tooth assembly, a gear transmission assembly and a marking pen, the marking plate is fixedly arranged below the outer side wall of the L-shaped plate, the helical tooth assembly is fixedly and vertically arranged on the outer side wall of the L-shaped plate, and the marking pen is fixedly arranged on the gear transmission assembly;

the guide assembly is arranged on the side wall of the pressing plate, so that the moving stability of the marking pen is ensured;

and the gear transmission assembly is arranged on the guide assembly and used for controlling the moving direction of the marking pen.

Preferably, the guide assembly comprises two guide supports, two guide slide bars and a guide slide block, the two guide supports are fixedly arranged on the side wall of the upper end of the pressing plate, the guide slide bars perpendicular to the two guide supports are fixedly inserted into the side walls of the two guide supports, and the guide slide block is connected to the guide slide bars in a sliding mode.

Preferably, the skewed tooth subassembly includes skewed tooth casing, skewed rack, branch and reset spring, the cross section of skewed tooth casing is the U-shaped, and the opening part is provided with inward turn-ups, the rear side of skewed rack is provided with a plurality of branches, and the cover is equipped with reset spring in the branch, reset spring's both ends offset with the lateral wall of skewed rack and skewed tooth casing respectively.

Preferably, the gear transmission assembly comprises a Z-shaped rack, a connecting shaft, a first gear and a second gear, the marking pen is fixedly inserted into the upper end side wall of the Z-shaped rack, the two guide sliders are respectively and fixedly arranged on two sides of the Z-shaped rack, the connecting shaft is rotatably connected onto the side wall of the pressing plate, the first gear and the second gear are respectively and fixedly sleeved on outer side walls of two ends of the connecting shaft, the second gear is meshed with the Z-shaped rack, the first gear is meshed with the helical rack, and the upper end of each tooth of the helical rack is arranged in a plane mode that the lower end of the helical rack is arranged in a bevel mode.

Preferably, drive mechanism still includes action wheel, belt, and passes through belt transmission between action wheel and the follow driving wheel, the output shaft of main impeller pump runs through its lateral wall and is connected with the initiative pivot, the fixed cover of action wheel is established in the outside of initiative pivot.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can drive the main impeller pump and transmit power through the middle of the transmission mechanism by arranging the main impeller pump, the auxiliary impeller pump and the transmission mechanism, so that the auxiliary impeller pump can rotate along with the main impeller pump, and the driving mode of the auxiliary impeller pump can be changed by arranging the conversion component;

2. the centrifugal component and the telescopic component are arranged, so that the working mode of the conversion component can be controlled according to the rotating speed of the driven wheel, the conveying speed of the hot melt adhesive can be dynamically adjusted according to the pressure driven by the impeller pump, the spline in the conversion component can be separated when the conveying speed is too high, the driving force of the impeller pump completely comes from the flowing of the hot melt adhesive, when the conveying speed is too low, the driving force of the impeller pump directly comes from the impeller pump through the matching of the spline and the upper spline groove, the pumping-out speed of the hot melt adhesive in the conveying pipe is further increased, and finally, the speed of outputting the hot melt adhesive is in a reasonable range in the whole adhesive pumping process, and the qualification rate of the cloth base gluing is ensured;

3. according to the invention, by arranging the marking mechanism, the pressing plate can dynamically move up and down in the process of changing the working mode by the conversion component, the marking pen can draw a straight line and a graph of a fold line on the marking paper through the meshing relation of the helical tooth component and the gear transmission component, and the coating qualification rate after the cloth base is coated with glue can be quickly judged by observing the times of the fold line and the amplitude of the fold line.

Drawings

FIG. 1 is a schematic view of an overall assembly structure of a hot melt adhesive tape-based coating mechanism according to the present invention;

FIG. 2 is a schematic view of the internal structure of a hot melt adhesive tape dispenser according to the present invention;

FIG. 3 is a schematic view showing the overall structure of the relevant components of an L-shaped plate of a hot melt adhesive tape dispenser according to the present invention;

FIG. 4 is a schematic diagram of the right side view of the relevant components of the L-shaped plate of the hot melt adhesive tape-based adhesive tape coating mechanism according to the present invention;

FIG. 5 is a schematic structural view of a telescopic assembly of a hot melt adhesive tape dispenser according to the present invention;

FIG. 6 is a schematic structural view showing a connection relationship between a telescopic assembly and a gear transmission assembly of the hot melt adhesive tape-based adhesive tape coating mechanism according to the present invention;

fig. 7 is a schematic structural view of a helical tooth assembly of a hot melt adhesive tape-based adhesive tape coating mechanism according to the present invention.

In the figure: 1. a frame; 2. a main impeller pump; 3. from a vane pump; 4. gluing ports; 5. fixing a bracket; 6. an L-shaped plate; 7. a transmission mechanism; 701. a driving wheel; 702. a driven wheel; 703. a belt; 7021. an upper spline groove; 8. a conversion component; 801. converting the lantern ring; 802. a stop lever; 803. a switching spring; 804. a spline; 9. a telescoping assembly; 901. pressing a plate; 902. a sloping block; 903. a connecting rod; 904. a T-shaped guide rod; 905. a compression spring; 906. a guide block; 10. a centrifuge assembly; 1001. a centrifugal collar; 1002. connecting blocks; 1003. a telescopic sleeve; 1004. a telescopic pressure lever; 11. a marking plate; 12. a guide assembly; 1201. a guide bracket; 1202. a guide slide bar; 1203. a guide slider; 13. a helical tooth assembly; 1301. a helical gear housing; 1302. a helical rack; 1303. a strut; 1304. a return spring; 14. a gear drive assembly; 1401. a Z-shaped rack; 1402. a connecting shaft; 1403. a first gear; 1404. a second gear; 15. a marking pen.

Detailed Description

Referring to fig. 1-7, a hot melt adhesive fabric-based adhesive tape coating mechanism comprises a frame 1, a main impeller pump 2, a secondary impeller pump 3 and a coating port 4, wherein the side walls of the main impeller pump 2 and the secondary impeller pump 3 are fixedly connected with a fixing support 5, the other side of the fixing support 5 is fixed on the side wall of the frame 1 through a bolt, the upper end of the main impeller pump 2 is provided with a glue conveying port, glue melted by heating is conveyed into the main impeller pump 2 through the glue conveying port, the glue is driven to flow in the glue conveying pipe by the pressure of the main impeller pump 2, the secondary impeller pump 3 and the coating port 4 are communicated through the glue conveying pipe, a transmission mechanism 7 is arranged between the main impeller pump 2 and the secondary impeller pump 3, an L-shaped plate 6 is fixedly arranged on the side wall of the secondary impeller pump 3 and the transmission mechanism 7 on the same side, a pressure adjusting mechanism is arranged on the L-shaped plate 6, and the pressure adjusting mechanism comprises a conversion component 8, A telescoping assembly 9 and a centrifuge assembly 10;

referring to fig. 3 to 4, specifically, a switching assembly 8 is provided between the transmission mechanism 7 and the L-shaped plate 6 for switching transmission of power transmitted from the vane pump 3; the conversion assembly 8 comprises a conversion sleeve ring 801, a stop lever 802, a conversion spring 803 and a spline 804, wherein the output end of the impeller pump 3 penetrates through the side wall thereof and is connected with a driven rotating shaft, the driven rotating shaft penetrates through the side wall of the L-shaped plate 6 and is provided with a lower spline groove, the inner ring of the conversion sleeve ring 801 is provided with the spline 804, the driven rotating shaft is provided with the stop lever 802 between each notch of the lower spline groove, the outer side of the driven rotating shaft is also sleeved with the conversion spring 803, two ends of the conversion spring 803 are respectively abutted against the side walls of the conversion sleeve ring 801 and the stop lever 802, the transmission mechanism 7 comprises a driven wheel 702, the side wall of the driven wheel 702 is provided with an upper spline groove 7021, the spline 804 is matched with the upper spline groove 7021 and the lower spline groove in a sliding manner, it should be noted that 80-100 notches are arranged in the number of the upper spline groove 7021, and simultaneously, the key head of the spline 804 is chamfered, thereby ensuring that the spline 804 smoothly enters the upper spline groove 7021, and thus stably and accurately completing the switching operation.

Referring to fig. 4-6, in particular, the telescopic assembly 9 is disposed on an outer side wall of the L-shaped plate 6, and is used for driving the switching assembly 8 to perform switching operation; the telescopic assembly 9 comprises a pressure plate 901, an inclined block 902, a connecting rod 903, a T-shaped guide rod 904, a compression spring 905 and a guide block 906, one side of the L-shaped plate 6 is provided with a strip-shaped opening 601 in a penetrating way, the connecting rod 903 is connected on the strip-shaped opening 601 in a sliding way, one end of the connecting rod 903 close to the conversion sleeve ring 801 is fixedly connected with the inclined block 902, an included angle between the inclined plane of the inclined block 902 and the horizontal plane is an acute angle, the other end of the connecting rod 903 is fixedly provided with a pressing plate 901, the outer side wall of the L-shaped plate 6 is symmetrically provided with two guide blocks 906, a T-shaped guide rod 904 penetrates through the side wall of the guide block 906 and is in sliding connection with the guide block 906, a compression spring 905 is sleeved on the outer side of the T-shaped guide rod 904, and in an initial state, the lower inclined surface of the inclined block 902 abuts against the conversion collar 801, and the spline 804 is inserted into the upper spline groove 7021, thereby ensuring that the main impeller pump 2 assists in starting the operation of the slave impeller pump 3 and each subsequent component when it is just started.

Referring to fig. 4, specifically, the centrifugal assembly 10 is disposed right above the telescopic assembly 9 and connected to the L-shaped plate 6, and is configured to provide power for displacing the telescopic assembly 9 in a vertical direction; centrifugal component 10 includes centrifugal lantern ring 1001, connecting block 1002, telescopic sleeve 1003 and flexible depression bar 1004, the fixed cover of centrifugal lantern ring 1001 is established in driven rotating shaft's the outside, the outside of centrifugal lantern ring 1001 is provided with a plurality of connecting blocks 1002 around the array, and the blind end of telescopic sleeve 1003 rotates with the lateral wall of connecting block 1002 to be connected, the open end sliding connection of telescopic sleeve 1003 has flexible depression bar 1004, and fixed being provided with expanding spring in the telescopic sleeve 1003, expanding spring and flexible depression bar 1004 fixed connection, it is required to explain, the end screw thread fixedly connected with metal ball of flexible depression bar 1004, and the quantity of flexible depression bar 1004 or connecting block 1002 is greater than 6, can guarantee that centrifugal lantern ring 1001 can form complete circle when rotating, reach the effect that similar disc is direct to offset with clamp plate 901, thereby when guaranteeing to press clamp plate 901, can be continuous and stable.

In the work, an operator sends the heated and melted glue into the glue conveying port of the main impeller pump 2, starts the main impeller pump 2, meanwhile, the driving wheel 701 drives the driven wheel 702 to rotate through the belt 703, so that the impeller of the driven impeller pump 3 starts to rotate, the hot melt glue is driven to enter the driven impeller pump 3 through the conveying pipe, and then is sent into the glue coating port 4 through the conveying pipe, and the subsequent glue coating operation on the base material is carried out;

at the initial stage, as the main impeller pump 2 is driven to drive the subsequent driven rotating shaft to rotate at a high speed, at this time, the centrifugal lantern ring 1001 rotates rapidly, the expansion spring is stretched, so that the expansion compression rod 1004 compresses the pressing plate 901, the compression spring 905 is compressed, the inclined block 902 moves downwards gradually, the switching spring 803 resets, the spline 804 moves out of the upper spline groove 7021, at this time, the impeller of the impeller pump 3 rotates and is completely driven by the flow of the hot melt adhesive, the glue outlet amount of the hot melt adhesive is ensured to be controlled, neither too much nor too little hot melt adhesive is generated, when the hot melt adhesive in the conveying pipe is partially adhered or the melting degree of the hot melt adhesive at the initial stage is insufficient, the subsequent flow speed of the hot melt adhesive is slowed, at this time, the driving force of the main impeller pump 2 cannot be maintained, the compression spring 905 resets at a proper time, the pressing plate 901 is pushed to move upwards, the inclined block 902 moves upwards along with the same time and presses the switching lantern ring 801 to move towards the driven wheel 702, the spline 804 is inserted into the upper spline groove 7021 again, at this time, the driving force of the impeller pump 3 is directly from the driving wheel at the position of the main impeller pump 2, so that the output pressure of the impeller pump 3 is increased, the conveying speed of the hot melt adhesive is increased, the amount of the hot melt adhesive output from the adhesive coating port 4 is ensured to be maintained in a reasonable dynamic balance range, the qualification rate of the base material after being coated with the adhesive is ensured, and the coating qualification rate of the base material is ensured by dynamically converting the conveying mode.

Specifically, referring to fig. 4 to 6, a marking mechanism is further arranged on the pressing plate 901, and the marking mechanism includes a marking plate 11, a guide assembly 12, a helical rack 13, a gear transmission assembly 14 and a marking pen 15, the marking plate 11 is fixedly arranged below the outer side wall of the L-shaped plate 6, the helical rack 13 is fixedly and vertically arranged on the outer side wall of the L-shaped plate 6, and the marking pen 15 is fixedly arranged on the gear transmission assembly 14, it should be noted that one piece of marking paper can be pasted on the marking plate 11 every time the pressing plate works, which is convenient for subsequent checking;

referring to fig. 5, in particular, the guide assembly 12 is disposed on a sidewall of the pressing plate 901 to ensure stability of movement of the marking pen 15; the guide assembly 12 comprises two guide supports 1201, two guide slide bars 1202 and a guide slider 1203, the two guide supports 1201 are fixedly arranged on the side wall of the upper end of the pressing plate 901, the guide slide bars 1202 perpendicular to the two guide supports 1201 are fixedly inserted into the side walls of the two guide supports 1201, and the guide slider 1203 is slidably connected to the guide slide bars 1202.

Referring to fig. 7, specifically, the helical gear assembly 13 includes a helical gear housing 1301, a helical rack 1302, a support rod 1303 and a return spring 1304, the cross section of the helical gear housing 1301 is U-shaped, an inward flange is disposed at an opening, a plurality of support rods 1303 are disposed at the rear side of the helical rack 1302, the return spring 1304 is sleeved in the support rods 1303, and two ends of the return spring 1304 abut against the helical rack 1302 and the side wall of the helical gear housing 1301, respectively.

Referring to fig. 6, in particular, a gear assembly 14 is disposed on the guide assembly 12 for controlling the moving direction of the marker pen 15; the gear transmission assembly 14 comprises a Z-shaped rack 1401, a connecting shaft 1402, a first gear 1403 and a second gear 1404, the marking pen 15 is fixedly inserted on the side wall of the upper end of the Z-shaped rack 1401, two guide sliders 1203 are respectively and fixedly arranged on two sides of the Z-shaped rack 1401, the connecting shaft 1402 is rotatably connected on the side wall of the pressing plate 901, the first gear 1403 and the second gear 1404 are respectively and fixedly sleeved on the outer side walls of two ends of the connecting shaft 1402, the second gear 1404 is meshed with the Z-shaped rack 1401, the first gear 1403 is meshed with the helical rack 1302, and the upper end of each tooth of the helical rack 1302 is arranged in a plane mode of being an inclined plane and the lower end of each tooth of the helical rack 1302.

In operation, when the main impeller pump 2 starts to operate, the pressing plate 901 is pressed down to the bottom rapidly, the connecting shaft 1402 does not rotate due to the static friction force between the second gear 1404 on the connecting shaft 1402 and the Z-shaped rack 1401, the marking pen 15 marks a vertical straight line on the marking paper, when the hot melt adhesive delivery speed is reduced and the pressure is insufficient, the compression spring 905 resets gradually to drive the pressing plate 901 to move up, at this time, the first gear 1403 is meshed with the helical rack 1302 due to the arrangement of the inclined plane of the helical rack 1302 below the upper plane, so that the connecting shaft 1402 rotates, the second gear 1404 and the Z-shaped rack 1401 move to one side close to the marking plate 11, the marking pen 15 moves to one side of the marking plate 11 while moving upwards, after the movement is synthesized, an approximately oblique straight line is formed on the marking paper, when the spline 804 enters the upper spline groove 7021 in the driven wheel 702, the transfer mode of the impeller pump 3 is changed, the internal hydraulic pressure of the pump is improved, so that the transfer speed of the hot melt adhesive is increased again, the process is repeated, the times of the change of the hydraulic pressure of the pump in the whole cloth base gluing process can be known by observing the times of the folding lines on the marking paper, the times can be used as one parameter for judging the qualification rate of the cloth base gluing, in addition, the qualification rate of the cloth base gluing can be accurately judged by observing the amplitude of the folding lines on the marking paper, when the upper and lower amplitudes are in a preset reasonable interval, the pressure change of the pump liquid is in a reasonable range, if a larger folding line amplitude appears, the output pressure of the pump liquid is greatly changed, the larger difference of the infusion amount is caused, and the qualification rate of the cloth base gluing is further judged by combining the times of the change of the folding lines under the condition.

Claims

1. A hot melt adhesive cloth-based adhesive tape coating mechanism comprises a rack (1), a main impeller pump (2), a slave impeller pump (3) and a coating port (4), wherein the side walls of the main impeller pump (2) and the slave impeller pump (3) are fixedly connected with a fixing support (5), the other side of the fixing support (5) is fixed on the side wall of the rack (1) through bolts, the upper end of the main impeller pump (2) is provided with a glue conveying port, the main impeller pump (2), the slave impeller pump (3) and the coating port (4) are communicated through a glue conveying pipe, the hot melt adhesive cloth-based adhesive tape coating mechanism is characterized in that a transmission mechanism (7) is arranged between the main impeller pump (2) and the slave impeller pump (3), an L-shaped plate (6) is fixedly arranged on the side wall at the same side of the slave impeller pump (3) and the transmission mechanism (7), and a pressure adjusting mechanism is arranged on the L-shaped plate (6), the pressure adjusting mechanism comprises a conversion component (8), a telescopic component (9) and a centrifugal component (10);

the conversion assembly (8) is arranged between the transmission mechanism (7) and the L-shaped plate (6) and is used for switching and transmitting the transmission power of the impeller pump (3);

the telescopic assembly (9) is arranged on the outer side wall of the L-shaped plate (6) and is used for driving the conversion assembly (8) to perform switching work;

and the centrifugal assembly (10) is arranged right above the telescopic assembly (9) and is connected with the L-shaped plate (6) and used for providing power for the displacement of the telescopic assembly (9) in the vertical direction.

2. The hot melt adhesive tape coating mechanism according to claim 1, wherein the switching assembly (8) comprises a switching sleeve ring (801), a stop lever (802), a switching spring (803) and a spline (804), the output end of the impeller pump (3) penetrates through the side wall thereof and is connected with a driven rotating shaft, the driven rotating shaft penetrates through the side wall of the L-shaped plate (6) and is provided with a lower spline groove, the inner ring of the switching sleeve ring (801) is provided with the spline (804), the driven rotating shaft is provided with the stop lever (802) between the notches of the lower spline groove, the outer side of the driven rotating shaft is further sleeved with the switching spring (803), the two ends of the switching spring (803) respectively abut against the side walls of the switching sleeve ring (801) and the stop lever (802), the transmission mechanism (7) comprises a driven wheel (702), and the side wall of the driven wheel (702) is provided with an upper spline groove (7021), the spline (804) is matched with the upper spline groove (7021) and the lower spline groove in a sliding mode.

3. The hot melt adhesive tape-based applicator mechanism as recited in claim 2, the telescopic component (9) comprises a pressure plate (901), an inclined block (902), a connecting rod (903), a T-shaped guide rod (904), a compression spring (905) and a guide block (906), a strip-shaped opening (601) is formed in one side of the L-shaped plate (6) in a penetrating mode, a connecting rod (903) is connected to the strip-shaped opening (601) in a sliding mode, one end of the connecting rod (903) close to the conversion lantern ring (801) is fixedly connected with an inclined block (902), an included angle between the inclined plane of the inclined block (902) and the horizontal plane is an acute angle, the other end of the connecting rod (903) is fixedly provided with a pressing plate (901), the outer side wall of the L-shaped plate (6) is symmetrically provided with two guide blocks (906), the T-shaped guide rod (904) penetrates through the side wall of the guide block (906) and is in sliding connection with the guide block, and the compression spring (905) is sleeved on the outer side of the T-shaped guide rod (904).

4. The coating mechanism of hot melt adhesive tape base adhesive tape according to claim 2, wherein the centrifugal assembly (10) comprises a centrifugal lantern ring (1001), connecting blocks (1002), a telescopic sleeve (1003) and a telescopic pressure rod (1004), the centrifugal lantern ring (1001) is fixedly sleeved on the outer side of the driven rotating shaft, the outer side of the centrifugal lantern ring (1001) is provided with a plurality of connecting blocks (1002) in a surrounding manner, the closed end of the telescopic sleeve (1003) is rotatably connected with the side wall of the connecting blocks (1002), the open end of the telescopic sleeve (1003) is slidably connected with the telescopic pressure rod (1004), the telescopic sleeve (1003) is fixedly provided with a telescopic spring, and the telescopic spring is fixedly connected with the telescopic pressure rod (1004).

5. The hot melt adhesive tape coating mechanism according to claim 3, wherein a marking mechanism is further disposed on the pressing plate (901), and the marking mechanism comprises a marking plate (11), a guiding assembly (12), a helical tooth assembly (13), a gear transmission assembly (14) and a marking pen (15), the marking plate (11) is fixedly disposed below the outer side wall of the L-shaped plate (6), the helical tooth assembly (13) is fixedly and vertically disposed on the outer side wall of the L-shaped plate (6), and the marking pen (15) is fixedly disposed on the gear transmission assembly (14);

the guide assembly (12) is arranged on the side wall of the pressing plate (901) and ensures the stability of the movement of the marking pen (15);

and the gear transmission assembly (14) is arranged on the guide assembly (12) and is used for controlling the moving direction of the marking pen (15).

6. A hot melt adhesive tape coating apparatus according to claim 5, wherein said guide assembly (12) comprises two guide brackets (1201), two guide slide bars (1202), and a guide slider (1203), wherein said two guide brackets (1201) are fixedly disposed on the upper side wall of said pressing plate (901), and the guide slide bars (1202) perpendicular to the two guide brackets (1201) are fixedly inserted into the side walls of each of the two guide brackets (1201), and said guide slider (1203) is slidably connected to the guide slide bars (1202).

7. The hot melt adhesive fabric-based adhesive tape coating mechanism according to claim 5, wherein the helical gear assembly (13) comprises a helical gear housing (1301), a helical gear rack (1302), a support rod (1303) and a return spring (1304), the cross section of the helical gear housing (1301) is in a U shape, an inward flanging is arranged at an opening, a plurality of support rods (1303) are arranged on the rear side of the helical gear rack (1302), the return spring (1304) is sleeved in the support rods (1303), and two ends of the return spring (1304) are respectively abutted against the side walls of the helical gear rack (1302) and the helical gear housing (1301).

8. The hot melt adhesive tape-based applicator mechanism as recited in claim 6, the gear transmission assembly (14) comprises a Z-shaped rack (1401), a connecting shaft (1402), a first gear (1403) and a second gear (1404), the marking pen (15) is fixedly inserted on the side wall of the upper end of the Z-shaped rack (1401), the two guide sliders (1203) are respectively and fixedly arranged on two sides of the Z-shaped rack (1401), the connecting shaft (1402) is rotatably connected to the side wall of the pressing plate (901), the first gear (1403) and the second gear (1404) are respectively fixedly sleeved on the outer side walls of two ends of the connecting shaft (1402), the second gear (1404) is meshed with the Z-shaped rack (1401), the first gear (1403) is meshed with the helical rack (1302), and the upper end of each tooth of the helical rack (1302) is a plane with the lower end being an inclined plane.

9. The hot melt adhesive tape-based coating mechanism as claimed in claim 2, wherein said transmission mechanism (7) further comprises a driving wheel (701) and a belt (703), and the driving wheel (701) and the driven wheel (702) are transmitted by the belt (703), the output shaft of said main impeller pump (2) penetrates the side wall thereof and is connected with a driving rotating shaft, and said driving wheel (701) is fixedly sleeved outside the driving rotating shaft.