Hot melt adhesive supply system

Abstract

The present invention discloses a hot melt adhesive supply system, comprising: a movable plate connected between the upper ends of the piston rods of the jacking cylinder and a pressure plate body connected to the movable plate through at least two vertical connecting rods, a cylinder that can move up and down with the pressure plate body is installed above the pressure plate body, an upper connecting shaft vertically installed at the lower end of the cylinder piston rod has its lower end inserted into the glue taking cylinder sleeve, and the lower end is connected to a lower connecting shaft through a connecting rod, a glue taking spoon that can be extended into the glue outlet through hole of the pressure plate body is installed on the vertically extended lower connecting shaft, a heating rod is embedded and installed in each installation hole on the pressure plate body, and a heating module is installed on the outer side of the glue taking cylinder sleeve. On the basis of realizing continuous and high-precision glue supply to the outside, the present invention can continuously heat the upper layer of the hot melt adhesive barrel and the hot melt adhesive that enters the glue taking cylinder sleeve to ensure that the hot melt adhesive always has good fluidity, thereby ensuring the continuity of glue supply and the consistency of glue output.

Description

Technical Field

[0001] The invention relates to the technical field of hot melt adhesive supply, and in particular to a hot melt adhesive supply system. Background Art

[0002] Photovoltaic building integration can combine solar power generation with the exterior wall of a building. Usually, the glue liquid in the glue barrel needs to be transported to the glue-spraying device for glue supply, and then glue is applied on the solar cell module before it is installed on the building. The existing technology cannot heat the upper surface of the solid hot melt glue in the glue barrel when supplying hot melt glue, and cannot continuously heat the glue liquid when transporting it, which cannot ensure the good fluidity of the hot melt glue, easily affects the continuous glue supply, and cannot ensure the continuity of glue supply and the consistency of glue output. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hot melt adhesive supply system, which can continuously heat the upper layer of the hot melt adhesive barrel and the hot melt adhesive entering the glue cylinder sleeve on the basis of realizing continuous and high-precision glue supply to the outside to ensure that the hot melt adhesive always has good fluidity, thereby ensuring the continuity of glue supply and the consistency of glue output.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hot melt adhesive supply system, comprising: a carrier plate for placing the hot melt adhesive tube, at least two lifting cylinders vertically installed on the upper surface of the carrier plate, a movable plate connected between the upper ends of the piston rods of the lifting cylinders, and a pressure plate body connected to the movable plate by at least two vertical connecting rods, a cylinder that can move up and down with the movable plate is installed on the movable plate and above the pressure plate body, a vertically extending glue cylinder sleeve is arranged between the cylinder body of the cylinder and the pressure plate body, the lower end of an upper connecting shaft vertically installed at the lower end of the cylinder piston rod penetrates into the glue cylinder sleeve, and a central portion of the upper surface of the pressure plate body is provided with a side surface that is sealed with the inner wall of the hot melt adhesive tube A glue outlet through hole connecting the hot melt glue cylinder and the inner cavity of the glue cylinder sleeve, a glue outlet is provided on the side wall of the upper end of the glue cylinder sleeve whose lower end is connected to the glue outlet through hole on the pressure plate body, a sealing assembly is provided above the glue outlet and between the glue cylinder sleeve and the upper connecting shaft, the lower end of the upper connecting shaft connected to the piston rod of the cylinder at the upper end is connected to a lower connecting shaft through a connecting rod, a glue spoon that can be extended into the glue outlet through hole of the pressure plate body is installed on the vertically extending lower connecting shaft, a plurality of mounting holes are provided on the pressure plate body and located on the outside of the glue outlet through hole, a heating rod is embedded and installed in each of the mounting holes, and a heating module is provided on the outside of the glue cylinder sleeve and located between the glue outlet and the pressure plate body.

[0005] The further improved scheme in the above technical scheme is as follows:

[0006] 1. In the above scheme, the lower surface of the pressure plate body gradually tilts downward in the radial outward direction of the pressure plate body, and the lower surface of the pressure plate body is provided with a plurality of first ridges, second ridges and third ridges, each of which extends radially along the pressure plate body. The thickness of each of the first ridges, second ridges and third ridges gradually decreases in the radial outward direction of the pressure plate body, so that the lower surfaces of the first ridges, second ridges and third ridges are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder.

[0007] 2. In the above scheme, a plurality of first ridges are arranged at equal intervals in the circumferential direction, and two second ridges arranged at intervals in the circumferential direction are arranged between any two adjacent first ridges, and one third ridge is arranged between each of the second ridges and the adjacent first ridge, and a diverter ridge is arranged between any two adjacent second ridges, and the end faces of one end of each of the diverter ridges, the first ridges, the second ridges and the third ridges with decreasing lengths are flush with the outer circumferential surface of the pressure plate body, and the other end of the diverter ridge extends to the edge of the outer side of the glue outlet hole, and a notch is provided between the ends of the two second ridges on both sides of each diverter ridge close to the glue outlet hole, so that each diverter ridge and the guide flow channels formed between the second ridges on both sides of the diverter ridge are connected to each other, and each of the diverter ridges, the first ridges, the second ridges and the third ridges are each provided with an inwardly inclined chamfered surface at the lower part of the end face of one end away from the glue outlet hole.

[0008] 3. In the above solution, the heating module includes a heating body with a plurality of mica heating sheets built in and a temperature sensor.

[0009] 4. In the above solution, a protective cover is provided on the outside of the heating module.

[0010] 5. In the above solution, the hot melt adhesive cylinder is arranged between the two lifting cylinders.

[0011] 6. In the above scheme, the movable plate and the pressure plate body are connected by two vertical connecting rods symmetrically arranged on both sides of the glue taking cylinder sleeve, so that the pressure plate body can move in the vertical direction with the movable plate.

[0012] 7. In the above solution, a support plate is installed on the lower surface of the cylinder body, and the support plate is connected to the two vertical connecting rods through a connecting block.

[0013] 8. In the above scheme, a round nut is mounted on the outer side of the upper end of the glue cylinder sleeve, and a fixing plate is mounted below the round nut threadedly connected to the glue cylinder sleeve and on the outer side of the glue cylinder sleeve. The lower surface of the round nut overlaps the upper surface of the fixing plate, and the fixing plate is connected to the support plate through at least two vertically arranged positioning columns.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. The glue supply system of the hot melt glue of the present invention has a cylinder that can move up and down with the cylinder installed on its movable plate and located above the pressure plate body, a vertically extending glue cylinder sleeve is arranged between the cylinder body and the pressure plate body, a lower end of an upper connecting shaft vertically installed at the lower end of the cylinder piston rod penetrates into the glue cylinder sleeve, a glue outlet through hole connecting the hot melt glue cylinder and the inner cavity of the glue cylinder sleeve is arranged in the center of the upper surface of the pressure plate body whose side surface is sealed with the inner wall of the hot melt glue cylinder, a glue outlet is arranged on the side wall of the upper end of the glue cylinder sleeve whose lower end is connected with the glue outlet through hole on the pressure plate body, a sealing assembly is arranged above the glue outlet and located between the glue cylinder sleeve and the upper connecting shaft, and the upper end is sealed with the piston of the cylinder The lower end of the upper link shaft connected by the rod is connected to a lower link shaft through a connecting rod, and a glue spoon that can be inserted into the glue outlet hole of the pressure plate body is installed on the vertically extended lower link shaft, and a plurality of mounting holes are opened on the pressure plate body and located on the outside of the glue outlet hole, and a heating rod is embedded and installed in each mounting hole, and a heating module is mounted on the outside of the glue cylinder sleeve and located between the glue outlet and the pressure plate body. On the basis of realizing continuous and high-precision glue supply to the outside through the cooperation of the pressure plate and the glue spoon, the upper layer of the hot melt glue barrel and the hot melt glue entering the glue cylinder sleeve can be continuously heated to ensure that the hot melt glue always has good fluidity, thereby ensuring the continuity of glue supply and the consistency of glue output.

[0016] 2. The adhesive supply system of the hot melt adhesive of the present invention has a lower surface of the pressure plate body that gradually slopes downward in the radial outward direction of the pressure plate body, and the lower surface of the pressure plate body is provided with a plurality of first convex strips, second convex strips and third convex strips, each of which extends radially along the pressure plate body. The thickness of each of the first convex strips, the second convex strips and the third convex strips gradually decreases in the radial outward direction of the pressure plate body, so that the lower surfaces of the first convex strips, the second convex strips and the third convex strips are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder, so that the heat generated by the heating rod can be transferred to the surface of the hot melt adhesive through the convex strips. The hot melt adhesive which is solid in the initial state is quickly heated so that the hot melt adhesive liquid which is melted by heating and has fluidity can be discharged outward from the adhesive outlet through hole to realize continuous adhesive supply, and the melting of the hot melt adhesive in the area around the adhesive outlet through hole can be accelerated and the adhesive liquid with fluidity can be quickly gathered to the area around the adhesive outlet through hole to ensure the efficiency of adhesive supply, and the sealing performance between the pressure plate body and the hot melt adhesive cylinder is improved, and the adverse interference caused by the overflow of the adhesive liquid is effectively avoided; further, the plurality of first convex strips are arranged at equal intervals in the circumferential direction, and two second convex strips which are arranged at intervals in the circumferential direction are arranged between any two adjacent first convex strips. The second protrusion is provided with a third protrusion between each second protrusion and the adjacent first protrusion, and a diverter protrusion is provided between any two adjacent second protrusions. The end faces of the diverter protrusions, the first protrusions, the second protrusions and the third protrusions, which have decreasing lengths, are flush with the outer circumferential surface of the pressure plate body, and the other ends of the diverter protrusions extend to the edge of the outer side of the glue outlet through hole. A notch is provided between the ends of the two second protrusions on both sides of each diverter protrusion, which are close to the glue outlet through hole, so that the guide flow channels formed between each diverter protrusion and the second protrusions on both sides of the diverter protrusion are connected to each other, and each diverter protrusion, the first protrusion, the second protrusion and the third protrusion are connected to each other. The first convex strip, the second convex strip and the third convex strip are each provided with an inwardly inclined beveled surface at the lower part of the end face away from the glue outlet hole, which not only guides the flow direction of the glue liquid, but also mixes and evenly presses the glue liquid from all directions through the staggered guide flow channels to improve the uniformity and consistency of the glue supply pressure. The beveled surface at the end of each convex strip can also connect the guide flow channels formed between adjacent convex strips in the area close to the seal between the pressure plate body and the hot melt adhesive cylinder, thereby realizing adaptive adjustment of the pressure in the area between the pressure plate body and the glue liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of the glue supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a structural schematic diagram of the adhesive supply system of the hot melt adhesive of the present invention;

[0018] Attached Figure 2 It is a partial structural schematic diagram of the adhesive supply system of the hot melt adhesive of the present invention;

[0019] Attached Figure 3 The present invention is attached Figure 2Schematic diagram of the cross section along AA;

[0020] Attached Figure 4 The present invention is attached Figure 3 The enlarged schematic diagram of point B in the middle;

[0021] Attached Figure 5 The present invention is attached Figure 3 The enlarged schematic diagram of the center C;

[0022] Attached Figure 6 The present invention is attached Figure 3 The enlarged schematic diagram of point D in the middle;

[0023] Attached Figure 7 It is a structural schematic diagram of a pressure plate in the adhesive supply system of the hot melt adhesive of the present invention;

[0024] Attached Figure 8 The present invention is attached Figure 7 Schematic diagram of the cross section along EE;

[0025] Attached Fig. 9 It is a schematic diagram of the partial structure of a pressure plate in the adhesive supply system of the hot melt adhesive of the present invention.

[0026] In the above drawings: 100, hot melt adhesive tube; 200, carrier plate; 300, lifting cylinder; 400, movable plate; 500, vertical connecting rod; 1, platen body; 2, sealing groove; 3, sealing ring; 4, adhesive outlet hole; 5, mounting hole; 6, heating rod; 7, cover plate; 71, through hole; 8, first protrusion; 91, air outlet hole; 92, sealing rod; 10, diverter convex strip; 11, first convex strip; 12, second convex strip; 13, third convex strip; 14, notch; 15, chamfered surface; 16, heating module; 17, protective cover; 18, connecting sleeve; 19, flange ring; 20, sealing gasket; 21, cylinder; 211, cylinder body; 212, piston rod; 22 , glue cylinder sleeve; 24, upper connecting shaft; 241, stopper; 251, round nut; 252, fixing plate; 253, positioning column; 254, support plate; 255, connecting block; 26, glue outlet; 28, sealing assembly; 29, lower connecting shaft; 30, glue spoon; 31, movable part; 32, movable sleeve; 321, glue outlet hole; 331, glue inlet chamber; 332, glue storage chamber; 333, glue outlet chamber; 34, glue outlet flow channel; 35, retaining ring; 36, lower nut; 361, first flange portion; 37, glue sleeve; 371, sealing plate; 372, glue through hole; 38, glue suction cylinder; 381, second flange portion; 39, connecting rod; 391, second protrusion. DETAILED DESCRIPTION

[0027] The present invention can be further understood by the specific examples given below, but they are not intended to limit the present invention.

[0028] Embodiment 1: A hot melt adhesive supply system, comprising: a carrier plate 200 for placing a hot melt adhesive tube 100, at least two lifting cylinders 300 vertically mounted on the upper surface of the carrier plate 200, a movable plate 400 connected between the upper ends of the piston rods of the lifting cylinders 300, and a pressure plate body 1 connected to the movable plate 400 through at least two vertical connecting rods 500, wherein a cylinder 21 that can move up and down with the movable plate 400 is mounted on the movable plate 400 and above the pressure plate body 1, a vertically extending glue cylinder sleeve 22 is arranged between the cylinder body 211 of the cylinder 21 and the pressure plate body 1, a lower end of an upper link shaft 24 vertically mounted on the lower end of the piston rod 212 of the cylinder 21 penetrates into the glue cylinder sleeve 22, and a connecting rod 24 is provided in the center of the upper surface of the pressure plate body 1, the side surface of which is sealed with the inner wall of the hot melt adhesive tube 100, and a connecting rod 24 is provided to connect the hot melt adhesive tube 1 00 and the glue outlet through hole 4 of the inner cavity of the glue cylinder sleeve 22, and a glue outlet 26 is provided on the side wall of the upper end of the glue cylinder sleeve 22 whose lower end is connected to the glue outlet through hole 4 on the pressure plate body 1, and a sealing component 28 is provided above the glue outlet 26 and between the glue cylinder sleeve 22 and the upper link shaft 24, and the lower end of the upper link shaft 24 connected to the piston rod 212 of the cylinder 21 is connected to a lower link shaft 29 through a connecting rod 39, and a glue spoon 30 that can be extended into the glue outlet through hole 4 of the pressure plate body 1 is installed on the vertically extending lower link shaft 29, and a plurality of mounting holes 5 are provided on the pressure plate body 1 and located on the outside of the glue outlet through hole 4, and a heating rod 6 is embedded and installed in each of the mounting holes 5, and a heating module 16 is installed on the outside of the glue cylinder sleeve 22 and located between the glue outlet 26 and the pressure plate body 1;

[0029] When in use, preheat the pressure plate to about 100°C through a heating rod, and then put the pressure plate into the incoming glue barrel of hot melt adhesive, so that the sealing ring on the pressure plate is squeezed into contact with the inner wall of the hot melt adhesive barrel to achieve sealing between the two;

[0030] In the initial state, the glue in the hot melt glue cylinder is solid;

[0031] The heat generated by the heating rod heats the pressure plate to 150~160℃. The specific heating temperature can be set, and the maximum temperature can be heated to 250℃. The high-temperature pressure plate comes into contact with the solid hot melt adhesive. The glue is heated at 150℃ for half an hour, so that the hot melt adhesive in the upper layer of about 10 centimeters melts into a flowable liquid state. A certain pressure is always maintained between the pressure plate and the glue liquid surface.

[0032] The lower surface of the platen body 1 gradually slopes downward in the radial outward direction of the platen body 1, and the lower surface of the platen body 1 is provided with a plurality of first ridges 11, second ridges 12 and third ridges 13, each of which extends in the radial direction of the platen body 1. The thickness of each of the first ridges 11, second ridges 12 and third ridges 13 gradually decreases in the radial outward direction of the platen body 1, so that the lower surfaces of the first ridges 11, second ridges 12 and third ridges 13 are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder 100;

[0033] The plurality of first ridges 11 are arranged at equal intervals in the circumferential direction, and two second ridges 12 are arranged at intervals in the circumferential direction between any two adjacent first ridges 11, and one third ridge 13 is arranged between each of the second ridges 12 and the adjacent first ridge 11, and one diverter ridge 10 is arranged between any two adjacent second ridges 12, and the end faces of one end of each of the diverter ridges 10, the first ridge 11, the second ridge 12 and the third ridge 13, which have decreasing lengths in sequence, are aligned with the outer circumference of the pressure plate body 1. The peripheral surface is flush, the other end of the diverter convex strip 10 extends to the edge of the outer side of the glue outlet through hole 4, and a notch 14 is provided between the ends of the two second convex strips 12 on both sides of each diverter convex strip 10 and close to the glue outlet through hole 4, so that the guide flow channels formed between each diverter convex strip 10 and the second convex strips 12 on both sides thereof are connected to each other, and each of the diverter convex strip 10, the first convex strip 11, the second convex strip 12 and the third convex strip 13 is provided with an inwardly inclined chamfered surface 15 at the lower part of the end surface away from the glue outlet through hole 4;

[0034] When the pressure plate heats the hot melt adhesive, the closer the convex strips are to the area around the adhesive outlet hole, the thicker the convex strips are, which is conducive to heat absorption, thereby accelerating the melting of the hot melt adhesive in the area around the adhesive outlet hole.

[0035] Under the guidance of the inclined lower surface of the pressure plate body, the liquid glue can quickly gather to the area around the glue outlet hole to ensure the efficiency of glue supply, and also improve the sealing performance between the pressure plate body and the hot melt adhesive cylinder, effectively avoiding adverse interference caused by glue overflow; in addition, the multiple guide flow channels formed between adjacent convex strips can not only guide the flow direction of the glue, but also mix and evenly press the glue from all directions through the staggered guide flow channels to improve the uniformity and consistency of the glue supply pressure, and can also connect the guide flow channels formed between adjacent convex strips in the area close to the seal between the pressure plate body and the hot melt adhesive cylinder through the beveled surface at the end of each convex strip, thereby realizing adaptive adjustment of the pressure in the area between the pressure plate body and the glue surface to ensure the flatness of the pressure plate, thereby further improving the stability of glue supply.

[0036] The hot melt adhesive cylinder 100 is disposed between the two lifting cylinders 300 .

[0037] The movable plate 400 is connected to the pressure plate body 1 via two vertical connecting rods 500 symmetrically arranged on both sides of the glue taking cylinder sleeve 22 , so that the pressure plate body 1 can move in the vertical direction along with the movable plate 400 .

[0038] A support plate 254 is installed on the lower surface of the cylinder body 211 of the cylinder 21 , and the support plate 254 is connected to the two vertical connecting rods 500 via a connecting block 255 .

[0039] A round nut 251 is sleeved on the outer side of the upper end of the above-mentioned glue cylinder sleeve 22, and a fixing plate 252 is sleeved below the round nut 251 threadedly connected to the glue cylinder sleeve 22 and located on the outer side of the glue cylinder sleeve 22. The lower surface of the round nut 251 overlaps the upper surface of the fixing plate 252, and the fixing plate 252 is connected to the support plate 254 through at least two vertically arranged positioning columns 253.

[0040] A sealing groove 2 extending along the entire circumference is provided on the side surface of the pressure plate body 1 , and a sealing ring 3 is embedded and installed in the sealing groove 2 and protrudes from the side surface of the pressure plate body 1 .

[0041] The lower surfaces of the flow-dividing ridges 10 , the first ridges 11 , the second ridges 12 and the third ridges 13 are all flush; the lower surfaces of the flow-dividing ridges 10 , the first ridges 11 , the second ridges 12 and the third ridges 13 are all arc-shaped surfaces.

[0042] There are 16 heating rods 6 with a total power of 32KW, which can achieve a maximum temperature increase of 250°C within half an hour to facilitate temperature control.

[0043] The upper surface of the pressure plate body 1 has a first upward protrusion 8, and a plurality of mounting holes 5 extending in the horizontal direction and parallel to each other are provided on the side surface of the first protrusion 8 and located on both sides of the glue outlet through hole 4; the mounting holes 5 are through holes.

[0044] The sealing grooves 2 and the sealing rings 3 are provided in two numbers and are spaced apart in the axial direction of the pressure plate body 1; the pressure plate body 1 comprises a metal body and a high temperature resistant coating coated on the surface of the metal body.

[0045] Embodiment 2: A hot melt adhesive supply system, comprising: a carrier plate 200 for placing a hot melt adhesive tube 100, at least two lifting cylinders 300 vertically mounted on the upper surface of the carrier plate 200, a movable plate 400 connected between the upper ends of the piston rods of the lifting cylinders 300, and a pressure plate body 1 connected to the movable plate 400 through at least two vertical connecting rods 500, wherein a cylinder 21 that can move up and down with the movable plate 400 is mounted on the movable plate 400 and above the pressure plate body 1, a vertically extending glue cylinder sleeve 22 is arranged between the cylinder body 211 of the cylinder 21 and the pressure plate body 1, a lower end of an upper link shaft 24 vertically mounted on the lower end of the piston rod 212 of the cylinder 21 penetrates into the glue cylinder sleeve 22, and a connecting rod 24 is provided in the center of the upper surface of the pressure plate body 1, the side surface of which is sealed with the inner wall of the hot melt adhesive tube 100, and a connecting rod 24 is provided to connect the hot melt adhesive tube 1 00 and the glue outlet through hole 4 of the inner cavity of the glue cylinder sleeve 22, and a glue outlet 26 is provided on the side wall of the upper end of the glue cylinder sleeve 22 whose lower end is connected to the glue outlet through hole 4 on the pressure plate body 1, and a sealing component 28 is provided above the glue outlet 26 and between the glue cylinder sleeve 22 and the upper link shaft 24, and the lower end of the upper link shaft 24 connected to the piston rod 212 of the cylinder 21 is connected to a lower link shaft 29 through a connecting rod 39, and a glue spoon 30 that can be extended into the glue outlet through hole 4 of the pressure plate body 1 is installed on the vertically extending lower link shaft 29, and a plurality of mounting holes 5 are provided on the pressure plate body 1 and located on the outside of the glue outlet through hole 4, and a heating rod 6 is embedded and installed in each of the mounting holes 5, and a heating module 16 is installed on the outside of the glue cylinder sleeve 22 and located between the glue outlet 26 and the pressure plate body 1;

[0046] The pressure between the pressure plate and the liquid surface of the melted glue is maintained, and the glue in the glue barrel that has been melted into a liquid state at high temperature enters the glue outlet hole. The cylinder is started, and the glue spoon is driven by repeated pulling and pulling of the cylinder piston rod to continuously output the glue in the glue outlet hole from the glue outlet of the glue cylinder sleeve. The glue entering the glue cylinder sleeve always maintains good fluidity under the heating of the heating module on its outer side to ensure the continuity of glue discharge and the consistency of glue discharge amount.

[0047] The heating module 16 comprises a heating body with a plurality of mica heating sheets built therein and a temperature sensor; a protective cover 17 is arranged outside the heating module 16 .

[0048] The hot melt adhesive cylinder 100 is disposed between the two lifting cylinders 300 .

[0049] The movable plate 400 is connected to the pressure plate body 1 via two vertical connecting rods 500 symmetrically arranged on both sides of the glue taking cylinder sleeve 22 , so that the pressure plate body 1 can move in the vertical direction along with the movable plate 400 .

[0050] The mounting hole 5 is a blind hole which is formed on the upper surface of the pressure plate body 1 and extends in the vertical direction.

[0051] A cover plate 7 is disposed above the pressure plate body 1 to shield the wiring of the heating rod and other structures to ensure safety and aesthetics.

[0052] The cover plate 7 is fixedly connected to the pressure plate body 1 by a plurality of bolts; a through hole 71 communicating with the glue outlet through hole 4 is formed on the upper surface of the cover plate 7 .

[0053] The upper surfaces of the cover plate 7 and the pressure plate body 1 are each provided with an air outlet hole 91 extending vertically therethrough, and the lower end of a sealing rod 92 penetrates into the two interconnected air outlet holes 91 and is sealed and connected to the air outlet holes 91 through threads.

[0054] The lower end of the sealing rod 92 is configured to be in a pointed cone shape, and the upper end of the sealing rod 92 is provided with a handle.

[0055] The pressure plate body 1 comprises an aluminum body and a Teflon coating coated on the surface of the metal body.

[0056] The lower end of the above-mentioned glue cylinder sleeve 22 is sealedly connected to a glue passing sleeve 37 located above the glue taking spoon 30, and the lower end of the glue passing sleeve 37 with a sealing plate 371 at the upper end is sealedly connected to a glue suction cylinder 38, and the lower end of the glue suction cylinder 38 is embedded in the glue outlet through hole 4 on the pressure plate body 1.

[0057] A movable part 31 movable in the vertical direction is arranged inside the above-mentioned glue sleeve 37 and below the sealing plate 371. The lower part of the movable part 31, which is sealed on the lower connecting shaft 29, can be sealed and connected with the upper end of the glue suction cylinder 38, so that a glue feeding chamber 331 is formed between the glue sleeve 37, the glue suction cylinder 38 and the movable part 31. A movable sleeve 32 is sleeved on the outer side of the connecting rod 39. A stopper 241 is arranged above the movable sleeve 32 movable in the vertical direction. The outer surface of the lower part of the movable sleeve 32 is sealed and connected with the inner wall of the glue cylinder sleeve 22, so that the lower part of the movable sleeve 32 and the glue sleeve 37 are sealed and connected. A glue storage chamber 332 is formed between the sealing plates 371, and the lower part of the connecting rod 39 has a second protrusion 391 radially outward, and the lower end of the movable sleeve 32 can be sealed with the upper surface of the second protrusion 391, so as to form a glue discharge chamber 333 between the movable sleeve 32 and the connecting rod 39, and the glue inlet chamber 331 is connected with the glue storage chamber 332 through a plurality of glue through holes 372 opened on the sealing plates 371, and a glue discharge hole 321 connected with the glue discharge chamber 333 is opened on the side wall of the upper part of the movable sleeve 32, and a glue discharge channel 34 is provided between the glue discharge hole 321 and the glue outlet 26 on the glue cylinder sleeve 22.

[0058] The stopper 241 is disposed at the lower portion of the upper link shaft 24 .

[0059] The upper surface of the second protrusion 391 on the connecting rod 39 is a conical surface with an open lower end, and the lower end of the movable sleeve 32 is provided with an inner chamfered surface that can fit with the conical surface.

[0060] A retaining ring 35 is arranged between the above-mentioned rubber sleeve 37 and the rubber suction tube 38. The upper surface of the retaining ring 35 is sealedly connected to the lower end surface of the rubber sleeve 37 via an O-ring, and the lower surface is sealedly connected to the upper end surface of the rubber suction tube 38 via an O-ring. The upper end of the retaining ring 35 is provided with an inner chamfer, and the inner chamfer surface is in sealing contact with the movable part 31.

[0061] A lower nut 36 is threadedly connected to the outer wall of the lower end of the glue cylinder sleeve 22 . The lower nut 36 is sleeved on the outer side of the glue sleeve 37 and is sealed with the outer wall of the glue sleeve 37 .

[0062] The inner wall of the lower end of the above-mentioned lower nut 36 has a first flange portion 361 radially inward, and the outer wall of the upper end of the above-mentioned glue suction tube 38 has a second flange portion 381 radially outward, the lower surface of the second flange portion 381 overlaps and contacts with the upper surface of the first flange portion 361, and the outer surface of the second flange portion 381 is sealed and connected to the inner wall of the lower nut 36.

[0063] A connecting sleeve 18 is provided between the lower nut 36 and the pressure plate body 1 and outside the rubber suction tube 38. The lower end of the connecting sleeve 18 is embedded in a flange ring 19 and is sealedly connected to the inner wall of the flange ring 19. The flange ring 19 is connected to the upper surface of the pressure plate body 1 by bolts. The inner wall of the connecting sleeve 18 is sealedly connected to the outer wall of the rubber suction tube 38.

[0064] A sealing gasket 20 is arranged between the flange ring 19 and the upper surface of the pressure plate body 1 .

[0065] The working principle of the present invention is as follows:

[0066] When in use, preheat the pressure plate to about 100°C through a heating rod, and then put the pressure plate into the incoming glue barrel of hot melt adhesive, so that the sealing ring on the pressure plate is squeezed into contact with the inner wall of the hot melt adhesive barrel to achieve sealing between the two;

[0067] In the initial state, the glue in the hot melt glue cylinder is solid;

[0068] First, remove the sealing rod on the air outlet, and move the pressure plate downward until the lower surfaces of the first convex strips, the second convex strips, and the third convex strips on the pressure plate contact the upper surface of the solid hot melt adhesive. During this process, the air between the pressure plate and the upper surface of the hot melt adhesive is discharged from the air outlet;

[0069] The temperature of the pressure plate is heated to 150-160°C by the heat generated by the heating rod. The specific heating temperature can be set and can be heated to 250°C at the highest. The high-temperature pressure plate contacts the solid hot melt adhesive. The glue is heated at 150°C for half an hour, so that the hot melt adhesive located in the upper layer of about 10 cm melts into a flowable liquid state. A certain pressure is always maintained between the pressure plate and the glue liquid surface. When liquid adhesive is pressed out of the air outlet, the sealing rod is installed in the air outlet to seal the air outlet. In the process of the pressure plate heating the hot melt adhesive, the closer the convex strip is to the surrounding area of ​​the adhesive outlet through hole, the thicker the thickness is, which is conducive to the heat, thereby accelerating the melting of the hot melt adhesive in the surrounding area of ​​the adhesive outlet through hole.

[0070] The pressure between the pressure plate and the liquid surface of the molten glue is maintained, and the glue liquid in the glue barrel that has been melted into a liquid state at high temperature enters the glue outlet hole, and the cylinder is started. The glue spoon is driven to continuously output the glue liquid in the glue outlet hole from the glue outlet of the glue cylinder sleeve through the repeated pulling and drawing of the cylinder piston rod. The glue liquid entering the glue cylinder sleeve always maintains good fluidity under the heating of the heating module on its outer side to ensure the continuity of glue discharge and the consistency of glue discharge amount. In the above process, the liquid glue can be quickly gathered to the area around the glue outlet hole under the guidance of the lower surface of the inclined pressure plate body to ensure the efficiency of glue supply, and the pressure plate itself is also improved. The sealing performance between the pressure plate body and the hot melt adhesive tube can effectively avoid adverse interference caused by overflow of the adhesive liquid; in addition, the multiple guide flow channels formed between adjacent convex strips can not only guide the flow direction of the adhesive liquid, but also mix and evenly pressurize the adhesive liquid from all directions through the staggered guide flow channels to improve the uniformity and consistency of the adhesive supply pressure. The guide flow channels formed between the adjacent convex strips can also be connected in the area close to the sealing part of the pressure plate body and the hot melt adhesive tube through the beveled surface at the end of each convex strip, thereby realizing adaptive adjustment of the pressure in the area between the pressure plate body and the adhesive liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of the adhesive supply.

[0071] When the hot melt adhesive supply system is adopted, on the basis of realizing continuous and high-precision glue supply outwards through the cooperation of the pressure plate and the glue taking spoon, the upper layer of the hot melt adhesive barrel and the hot melt adhesive entering the glue taking cylinder sleeve can be continuously heated to ensure that the hot melt adhesive always has good fluidity, thereby ensuring the continuity of glue supply and the consistency of glue output; further, the heat generated by the heating rod can be transferred to the surface of the hot melt adhesive body through the convex strips to realize the rapid heating of the hot melt adhesive in an initial state of solid so as to facilitate the hot melt adhesive liquid with fluidity to be discharged from the glue outlet through hole after heating and melted to realize continuous glue supply, and the melting of the hot melt adhesive body in the area around the glue outlet through hole can be accelerated and the fluid glue liquid can be quickly gathered to the area around the glue outlet through hole to ensure the efficiency of glue supply, and the sealing performance between the pressure plate body and the hot melt adhesive barrel is improved, effectively avoiding adverse interference caused by glue liquid overflow;

[0072] In addition, it not only guides the flow direction of the glue liquid, but also mixes and evenly pressurizes the glue liquid from all directions through the staggered guide flow channels to improve the uniformity and consistency of the glue supply pressure. It can also connect the guide flow channels formed between adjacent convex strips in the area near the seal between the pressure plate body and the hot melt adhesive tube through the beveled surface at the end of each convex strip, thereby achieving adaptive adjustment of the pressure in the area between the pressure plate body and the glue liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of the glue supply.

[0073] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot melt adhesive supply system, comprising: A carrier plate (200) for placing a hot melt adhesive tube (100), at least two lifting cylinders (300) vertically mounted on the upper surface of the carrier plate (200), a movable plate (400) connected between the upper ends of the piston rods of the lifting cylinders (300), and a pressure plate body (1) connected to the movable plate (400) via at least two vertical connecting rods (500), characterized in that: a movable plate (400) is mounted on the movable plate (400) and located above the pressure plate body (1) and can move up and down with the movable plate (400) The cylinder (21) has a vertically extending glue cylinder sleeve (22) disposed between the cylinder body (211) of the cylinder (21) and the pressure plate body (1). The lower end of an upper connecting shaft (24) vertically mounted on the lower end of the piston rod (212) of the cylinder (21) penetrates into the glue cylinder sleeve (22). The center of the upper surface of the pressure plate body (1) whose side surface is sealed with the inner wall of the hot melt glue cylinder (100) is provided with a connection between the hot melt glue cylinder (100) and the glue cylinder sleeve (22). The glue outlet through hole (4) of the inner cavity, the lower end of which is connected to the glue outlet through hole (4) on the pressure plate body (1), is provided with a glue outlet (26) on the side wall of the upper end of the glue cylinder sleeve (22), a sealing component (28) is provided above the glue outlet (26) and between the glue cylinder sleeve (22) and the upper link shaft (24), and the lower end of the upper link shaft (24) connected to the piston rod (212) of the cylinder (21) is connected to a lower link shaft (24) via a connecting rod (39). 29), a glue taking spoon (30) which can be inserted into the glue outlet hole (4) of the pressure plate body (1) is installed on the vertically extending lower link shaft (29), a plurality of mounting holes (5) are opened on the pressure plate body (1) and located outside the glue outlet hole (4), a heating rod (6) is embedded and installed in each of the mounting holes (5), and a heating module (16) is installed on the outside of the glue taking cylinder sleeve (22) and located between the glue outlet (26) and the pressure plate body (1); The lower surface of the pressure plate body (1) gradually slopes downward in a radially outward direction of the pressure plate body (1), and the lower surface of the pressure plate body (1) is provided with a plurality of first convex strips (11), second convex strips (12) and third convex strips (13), each of which extends radially along the pressure plate body (1). The thickness of each of the first convex strips (11), the second convex strips (12) and the third convex strips (13) gradually decreases in a radially outward direction of the pressure plate body (1), so that the lower surfaces of the first convex strips (11), the second convex strips (12) and the third convex strips (13) are flush and are used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder (100). The plurality of the first convex strips (11) are arranged at equal intervals in the circumferential direction, and two second convex strips (12) arranged at intervals in the circumferential direction are arranged between any two adjacent first convex strips (11), and each of the second convex strips (12) is arranged between the adjacent first convex strips (11). There is one third convex strip (13), and a diverter convex strip (10) is provided between any two adjacent second convex strips (12). The end faces of one end of each of the diverter convex strip (10), the first convex strip (11), the second convex strip (12), and the third convex strip (13), which have decreasing lengths, are flush with the outer circumferential surface of the pressure plate body (1). The other end of the diverter convex strip (10) extends to the outer edge of the glue outlet through hole (4). A notch (14) is provided between the ends of the two second convex strips (12) located on both sides thereof near the glue outlet through hole (4), so that each diverter convex strip (10) and the guide flow channel formed between the second convex strips (12) on both sides thereof are connected to each other, and each of the diverter convex strips (10), the first convex strip (11), the second convex strip (12) and the third convex strip (13) is provided with an inwardly inclined chamfered surface (15) at the lower part of the end surface away from the glue outlet through hole (4).

2. The hot melt adhesive supply system according to claim 1, characterized in that: The heating module (16) comprises a heating body with a plurality of mica heating sheets built in and a temperature sensor.

3. The hot melt adhesive supply system according to claim 1, characterized in that: A protective cover (17) is provided on the outside of the heating module (16).

4. The hot melt adhesive supply system according to claim 1, characterized in that: The hot melt adhesive cylinder (100) is arranged between the two lifting cylinders (300).

5. The hot melt adhesive supply system according to claim 1, characterized in that: The movable plate (400) and the pressure plate body (1) are connected via two vertical connecting rods (500) symmetrically arranged on both sides of the glue taking cylinder sleeve (22), so that the pressure plate body (1) can move in the vertical direction along with the movable plate (400).

6. The hot melt adhesive supply system according to claim 4, characterized in that: A support plate (254) is installed on the lower surface of the cylinder body (211) of the cylinder (21), and the support plate (254) is connected to the two vertical connecting rods (500) via a connecting block (255).

7. The hot melt adhesive supply system according to claim 6, characterized in that: A round nut (251) is sleeved on the outer side of the upper end of the glue cylinder sleeve (22), and a fixing plate (252) is sleeved below the round nut (251) threadedly connected to the glue cylinder sleeve (22) and located on the outer side of the glue cylinder sleeve (22), the lower surface of the round nut (251) overlaps the upper surface of the fixing plate (252), and the fixing plate (252) is connected to the support plate (254) via at least two vertically arranged positioning columns (253).

Images