Hot melt pressure plate pump

Abstract

The invention discloses a hot melting pressure plate pump which comprises a pressure plate body connected with a movable plate through at least two vertical connecting rods, a heating rod is embedded in each mounting hole in the pressure plate body, and the lower surface of the pressure plate body gradually inclines downwards in the radial outward direction of the pressure plate body. A plurality of first raised lines, second raised lines and third raised lines are arranged on the lower surface of the pressure plate body, a shunting raised line is arranged between any two adjacent second raised lines, a notch is formed in each shunting raised line, and each raised line is provided with a diagonal plane which is inclined inwards. According to the glue supply device, solid hot melt glue can be rapidly heated so that continuous glue supply can be achieved, rapid collection can be achieved so that the glue supply efficiency can be guaranteed, bad interference caused by glue overflow is effectively avoided, and the glue supply efficiency can be improved on the basis of guiding the glue flowing direction and improving the uniformity and consistency of glue supply pressure. And self-adaptive adjustment of the pressure between the pressure plate and the glue solution is realized so as to ensure the flatness of the pressure plate.

Description

Technical Field

[0001] This invention relates to the field of dispensing technology, and in particular to a hot melt pressure plate pump. Background Technology

[0002] Dispensing is the process of applying, potting, or dripping electronic adhesives, oils, or other liquids onto a product to achieve functions such as adhesion, encapsulation, insulation, fixation, and surface smoothing. During the dispensing process, a plunger pump is used to transport the adhesive from the glue container to the dispensing device. Existing plunger pumps, when using hot melt adhesives, cannot heat the solid hot melt adhesive, hindering continuous dispensing. Furthermore, the slow accumulation speed within the glue container can affect dispensing efficiency, and poor sealing can lead to adhesive overflow and adverse effects. Additionally, uneven pressure between the pressure plate and the adhesive can compromise the flatness of the pressure plate. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hot melt pressure plate pump that can rapidly heat solid hot melt adhesive to facilitate continuous adhesive supply, rapidly collect adhesive to ensure supply efficiency, effectively avoid adverse interference caused by adhesive overflow, and adaptively adjust the pressure between the pressure plate and the adhesive to ensure the flatness of the pressure plate.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a hot melt pressure plate pump, comprising: a carrier plate for placing a hot melt glue cylinder, at least two lifting cylinders vertically mounted 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 sealing groove extending circumferentially is formed on the side surface of the pressure plate body, a sealing ring is embedded in the sealing groove and protrudes from the side surface of the pressure plate body, and a through-hole for dispensing glue is formed in the center of the pressure plate body. The outer side of the pressure plate has several mounting holes, and a heating rod is embedded in each mounting hole. The lower surface of the pressure plate body gradually slopes downward in the radial outward direction. The lower surface of the pressure plate body is provided with several first convex strips, second convex strips and third convex strips, each extending radially along the pressure plate body. The thickness of each first convex strip, second convex strip and third convex strip gradually decreases in the radial outward direction along the pressure plate body, so that the lower surfaces of the first convex strips, second convex strips and third convex strips are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder. Several first protrusions are evenly spaced in the circumferential direction. Between any two adjacent first protrusions, there are two second protrusions spaced in the circumferential direction. Between each second protrusion and an adjacent first protrusion, there is a third protrusion. Between any two adjacent second protrusions, there is a diversion protrusion. The end face of each of the diversion protrusions, first protrusions, second protrusions and third protrusions, whose lengths decrease sequentially, is flush with the outer circumferential surface of the pressure plate body. The other end of the diversion protrusion extends to the edge of the glue outlet hole. A notch is opened between the ends of the two second protrusions on both sides of each diversion protrusion near the glue outlet hole, so that the guide flow channel formed between each diversion protrusion and the second protrusions on both sides is interconnected. The lower part of the end face of each diversion protrusion, first protrusion, second protrusion and third protrusion away from the glue outlet hole is provided with an inwardly inclined bevel.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, the lower surfaces of the diversion ridge, the first ridge, the second ridge, and the third ridge are all flush.

[0006] 2. In the above scheme, the lower surfaces of the diversion protrusion, the first protrusion, the second protrusion and the third protrusion are all arc-shaped surfaces.

[0007] 3. In the above scheme, 16 heating rods are provided.

[0008] 4. In the above scheme, the upper surface of the pressure plate body has an upward protrusion, and several horizontally extending and parallel mounting holes are provided on the side surface of the protrusion and on both sides of the glue outlet hole.

[0009] 5. In the above scheme, the mounting hole is a blind hole opened on the upper surface of the pressure plate body and extending in the vertical direction.

[0010] 6. In the above scheme, a cover plate is provided on the top of the pressure plate body.

[0011] 7. In the above scheme, the pressure plate body includes a metal body and a high-temperature resistant coating applied to the surface of the metal body.

[0012] 8. In the above scheme, the metal body is an aluminum body, and the high-temperature resistant coating is a Teflon coating.

[0013] 9. In the above scheme, the lower surface of the movable plate is connected to the upper surface of the pressure plate body by two vertical connecting rods, so that the pressure plate body can move vertically with the movable plate.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The hot melt pressure plate pump of the present invention has several mounting holes on the pressure plate body located outside the glue outlet hole. A heating rod is embedded in each mounting hole. The lower surface of the pressure plate body gradually slopes downward in the radial outward direction. The lower surface of the pressure plate body is provided with several first, second, and third protrusions, each extending radially along the pressure plate body. The thickness of each first, second, and third protrusion gradually decreases in the radial outward direction along the pressure plate body, thereby making the lower surfaces of the first, second, and third protrusions flush. Used for extrusion contact with the hot melt adhesive in the hot melt glue cylinder, it can both conduct the heat generated by the heating rod to the surface of the hot melt adhesive through the raised strip to quickly heat the hot melt adhesive in its initial solid state, so that the heated and melted hot melt adhesive liquid can be discharged from the glue outlet hole to achieve continuous glue supply, and accelerate the melting of the hot melt adhesive in the area around the glue outlet hole and realize the rapid gathering of the fluid adhesive liquid in the area around the glue outlet hole to ensure glue supply efficiency. It also improves the sealing performance between the pressure plate body and the hot melt glue cylinder, effectively avoiding adverse interference caused by glue overflow.

[0015] 2. The hot melt pressure plate pump of the present invention further comprises two second protrusions spaced apart circumferentially between any two adjacent first protrusions, and a third protrusion between each second protrusion and an adjacent first protrusion. A diversion protrusion is provided between any two adjacent second protrusions. The end faces of the diversion protrusion, the first protrusion, the second protrusion, and the third protrusion, whose lengths decrease sequentially, are all flush with the outer circumferential surface of the pressure plate body. The other end of the diversion protrusion extends to the edge outside the glue outlet hole. A notch is provided between the ends of the two second protrusions on both sides of each diversion protrusion near the glue outlet hole, thereby allowing each diversion protrusion to be connected to the two second protrusions on both sides of it. The guide channels formed between the strips are interconnected. Each of the diverting strips, the first strip, the second strip, and the third strip has an inwardly inclined chamfered surface at the lower part of the end face away from the glue outlet. This not only guides the direction of glue flow but also mixes and equalizes the glue from various directions through the staggered guide channels, thereby improving the uniformity and consistency of the glue supply pressure. Furthermore, the chamfered surface at the end of each strip connects the guide channels formed between adjacent strips in the area near the seal between the pressure plate body and the hot melt glue cylinder. This allows for 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 the glue supply. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of the hot melt pressure plate pump of the present invention; Appendix Figure 2 This is a partial structural diagram of the hot melt pressure plate pump of the present invention; Appendix Figure 3 Appendix to this invention Figure 2 A schematic cross-sectional view along the middle AA section; Appendix Figure 4 This is a partial structural diagram of the hot melt pressure plate pump of the present invention. Figure 2 ; Appendix Figure 5 This is a schematic diagram of the lower surface of the pressure plate body of the hot melt pressure plate pump of the present invention.

[0017] In the attached diagrams: 1. Pressure plate body; 2. Sealing groove; 3. Sealing ring; 4. Adhesive outlet hole; 5. Mounting hole; 6. Heating rod; 7. Cover plate; 71. Through hole; 8. Protrusion; 91. Air outlet; 92. Sealing rod; 10. Diverting protrusion; 11. First protrusion; 12. Second protrusion; 13. Third protrusion; 14. Notch; 15. Beveled surface; 100. Hot melt adhesive cylinder; 200. Carrier plate; 300. Lifting cylinder; 400. Movable plate; 500. Vertical connecting rod. Detailed Implementation

[0018] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0019] Example 1: A hot melt pressure plate pump, comprising: a carrier plate 200 for placing a hot melt glue cylinder 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 by at least two vertical connecting rods 500. A sealing groove 2 extending circumferentially is formed on the side surface of the pressure plate body 1. A sealing ring 3 is embedded in the sealing groove 2 and protrudes from the side surface of the pressure plate body 1. A through-hole 4 for dispensing glue is formed in the center of the pressure plate body 1. A [missing information - likely a type of sealing ring] is formed on the pressure plate body 1 outside the through-hole 4. A plurality of mounting holes 5 are provided, and a heating rod 6 is embedded in each mounting hole 5. The lower surface of the pressure plate body 1 gradually slopes downward in the radial outward direction along the pressure plate body 1. The lower surface of the pressure plate body 1 is provided with a plurality of first protrusions 11, second protrusions 12 and third protrusions 13, each extending radially along the pressure plate body 1. The thickness of each first protrusion 11, second protrusion 12 and third protrusion 13 gradually decreases in the radial outward direction along the pressure plate body 1, so that the lower surfaces of the first protrusions 11, second protrusions 12 and third protrusions 13 are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder 100. When in use, the pressure plate is preheated to about 100°C by the heating rod, and then the pressure plate is put into the hot melt adhesive barrel. The sealing ring on the pressure plate is pressed into contact with the inner wall of the hot melt adhesive barrel to achieve a seal between the two. Initially, the adhesive inside the hot melt glue cartridge is solid; Several first protrusions 11 are evenly spaced in the circumferential direction. Between any two adjacent first protrusions 11, there are two second protrusions 12 spaced in the circumferential direction. Between each second protrusion 12 and an adjacent first protrusion 11, there is a third protrusion 13. Between any two adjacent second protrusions 12, there is a diversion protrusion 10. The end face of each of the diversion protrusion 10, first protrusion 11, second protrusion 12 and third protrusion 13, whose lengths decrease sequentially, is flush with the outer circle of the pressure plate body 1. The circumference is flush, and the other end of the diversion protrusion 10 extends to the edge outside the glue outlet hole 4. A notch 14 is opened between the ends of the two second protrusions 12 on each diversion protrusion 10 and located on both sides of it near the glue outlet hole 4, so that the guide flow channel formed between each diversion protrusion 10 and the second protrusions 12 on both sides is interconnected. Each diversion protrusion 10, the first protrusion 11, the second protrusion 12 and the third protrusion 13 is provided with an inwardly inclined chamfered surface 15 at the lower part of the end face away from the glue outlet hole 4. First, remove the sealing rod on the vent hole, and move the pressure plate downward until the lower surfaces of the first, second, and third protrusions on it come into contact with 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 outward from the vent hole. The heating element generates heat to raise the pressure plate to 150-160℃, with the specific temperature adjustable up to 250℃. The high-temperature pressure plate comes into contact with the solid hot melt adhesive. The adhesive remains at 150℃ for half an hour, causing the top 10 cm of hot melt adhesive to melt into a flowable liquid. A certain pressure is maintained between the pressure plate and the liquid surface. When liquid adhesive overflows from the vent, a sealing rod is inserted to seal the vent. During the heating process, the thicker the protrusions are closer to the dispensing hole, which helps to concentrate the heat and accelerates the melting of the hot melt adhesive in the area around the dispensing hole.

[0020] The lower surfaces of the aforementioned diversion protrusions 10, 11, 12 and 13 are all flush.

[0021] The lower surfaces of the aforementioned diversion protrusions 10, 11, 12 and 13 are all arc-shaped.

[0022] The aforementioned heating rod 6 has 16 rods with a total power of 32KW, which can achieve a maximum temperature rise of 250℃ within half an hour to facilitate temperature control.

[0023] The upper surface of the pressure plate body 1 has an upward protrusion 8, and several horizontally extending and parallel mounting holes 5 are provided on the side surface of the protrusion 8 and on both sides of the glue outlet hole 4.

[0024] The aforementioned mounting hole 5 is a through hole.

[0025] The aforementioned pressure plate body 1 includes a metal body and a high-temperature resistant coating applied to the surface of the metal body.

[0026] The metal body is aluminum, and the high-temperature resistant coating is a Teflon coating.

[0027] The lower surface of the aforementioned movable plate 400 is connected to the upper surface of the pressure plate body 1 by two vertical connecting rods 500, so that the pressure plate body 1 can move vertically with the movable plate 400.

[0028] Example 2: A hot melt pressure plate pump, comprising: a carrier plate 200 for placing a hot melt glue cylinder 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 by at least two vertical connecting rods 500. A sealing groove 2 extending circumferentially is formed on the side surface of the pressure plate body 1. A sealing ring 3 is embedded in the sealing groove 2 and protrudes from the side surface of the pressure plate body 1. A through-hole 4 for dispensing glue is formed in the center of the pressure plate body 1. A [missing information - likely a type of sealing ring] is formed on the pressure plate body 1 outside the through-hole 4. A plurality of mounting holes 5 are provided, and a heating rod 6 is embedded in each mounting hole 5. The lower surface of the pressure plate body 1 gradually slopes downward in the radial outward direction along the pressure plate body 1. The lower surface of the pressure plate body 1 is provided with a plurality of first protrusions 11, second protrusions 12 and third protrusions 13, each extending radially along the pressure plate body 1. The thickness of each first protrusion 11, second protrusion 12 and third protrusion 13 gradually decreases in the radial outward direction along the pressure plate body 1, so that the lower surfaces of the first protrusions 11, second protrusions 12 and third protrusions 13 are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder 100. Several first protrusions 11 are evenly spaced in the circumferential direction. Between any two adjacent first protrusions 11, there are two second protrusions 12 spaced in the circumferential direction. Between each second protrusion 12 and an adjacent first protrusion 11, there is a third protrusion 13. Between any two adjacent second protrusions 12, there is a diversion protrusion 10. The end face of each of the diversion protrusion 10, first protrusion 11, second protrusion 12 and third protrusion 13, whose lengths decrease sequentially, is flush with the outer circle of the pressure plate body 1. The circumference is flush, and the other end of the diversion protrusion 10 extends to the edge outside the glue outlet hole 4. A notch 14 is opened between the ends of the two second protrusions 12 on each diversion protrusion 10 and located on both sides of it near the glue outlet hole 4, so that the guide flow channel formed between each diversion protrusion 10 and the second protrusions 12 on both sides is interconnected. Each diversion protrusion 10, the first protrusion 11, the second protrusion 12 and the third protrusion 13 is provided with an inwardly inclined chamfered surface 15 at the lower part of the end face away from the glue outlet hole 4. The continuous downward pressure of the pressure plate causes the molten adhesive in the glue tank to be continuously discharged from the dispensing hole, ensuring a continuous supply of adhesive to subsequent dispensing valves. During this process, the liquid adhesive, guided by the inclined lower surface of the pressure plate, quickly converges towards the area around the dispensing hole, ensuring efficient adhesive supply and improving the sealing performance between the pressure plate and the hot melt glue cylinder, effectively preventing adhesive overflow and related interference. Furthermore, the multiple guide channels formed between adjacent protrusions not only guide the direction of adhesive flow but also mix and equalize the adhesive from various directions through the staggered arrangement of these channels, improving the uniformity and consistency of the supply pressure. Additionally, the beveled ends of each protrusion connect the guide channels formed between adjacent protrusions near the seal between the pressure plate and the hot melt glue cylinder, enabling adaptive adjustment of the pressure in the area between the pressure plate and the adhesive surface to ensure the flatness of the pressure plate and further improve the stability of the adhesive supply.

[0029] The lower surfaces of the aforementioned diversion protrusions 10, 11, 12 and 13 are all flush.

[0030] The lower surfaces of the aforementioned diversion protrusions 10, 11, 12 and 13 are all arc-shaped.

[0031] The aforementioned mounting hole 5 is a blind hole opened on the upper surface of the pressure plate body 1 and extending in the vertical direction.

[0032] A cover plate 7 is provided on the top of the pressure plate body 1 to shield the wiring of the heating rod and other structures to ensure safety and aesthetics.

[0033] The lower surface of the aforementioned movable plate 400 is connected to the upper surface of the pressure plate body 1 by two vertical connecting rods 500, so that the pressure plate body 1 can move vertically with the movable plate 400.

[0034] The cover plate 7 and the pressure plate body 1 are fixedly connected by several bolts.

[0035] The upper surface of the cover plate 7 is provided with a through hole 71 that communicates with the glue outlet through hole 4.

[0036] The upper surface of the cover plate 7 and the pressure plate body 1 is provided with an air vent 91 that runs vertically through the outside of the glue outlet hole 4. The lower end of a sealing rod 92 is inserted into the two interconnected air vents 91 and is sealed to the air vents 91 by threads.

[0037] The lower end of the sealing rod 92 is set in a pointed cone shape, and the upper end of the sealing rod 92 is provided with a handle.

[0038] The aforementioned sealing groove 2 and sealing ring 3 are each provided in twos, and are spaced apart along the axial direction of the pressure plate body 1.

[0039] The hot melt adhesive cylinder 100 is positioned between two lifting cylinders 300.

[0040] The working principle of this invention is as follows: When in use, the pressure plate is preheated to about 100°C by the heating rod, and then the pressure plate is put into the hot melt adhesive barrel. The sealing ring on the pressure plate is pressed into contact with the inner wall of the hot melt adhesive barrel to achieve a seal between the two. Initially, the adhesive inside the hot melt glue cartridge is solid; First, remove the sealing rod on the vent hole, and move the pressure plate downward until the lower surfaces of the first, second, and third protrusions on it come into contact with 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 outward from the vent hole. The heating element generates heat to raise the pressure plate to 150-160°C, with the specific temperature adjustable up to 250°C. The high-temperature pressure plate comes into contact with the solid hot melt adhesive. The adhesive remains at 150°C for half an hour, causing the top 10 cm of hot melt adhesive to melt into a flowable liquid. A certain pressure is maintained between the pressure plate and the liquid surface. When liquid adhesive overflows from the vent, a sealing rod is inserted to seal the vent. During the heating process, the thicker the protrusions are closer to the dispensing hole, which helps to concentrate the heat and accelerates the melting of the hot melt adhesive in the area around the dispensing hole. The continuous downward pressure of the pressure plate causes the molten adhesive in the glue tank to be continuously discharged from the dispensing hole, ensuring a continuous supply of adhesive to subsequent dispensing valves. During this process, the liquid adhesive, guided by the inclined lower surface of the pressure plate, quickly converges towards the area around the dispensing hole, ensuring efficient adhesive supply and improving the sealing performance between the pressure plate and the hot melt glue cylinder, effectively preventing adhesive overflow and related interference. Furthermore, the multiple guide channels formed between adjacent protrusions not only guide the direction of adhesive flow but also mix and equalize the adhesive from various directions through the staggered arrangement of these channels, improving the uniformity and consistency of the supply pressure. Additionally, the beveled ends of each protrusion connect the guide channels formed between adjacent protrusions near the seal between the pressure plate and the hot melt glue cylinder, enabling adaptive adjustment of the pressure in the area between the pressure plate and the adhesive surface to ensure the flatness of the pressure plate and further improve the stability of the adhesive supply.

[0041] When using the aforementioned hot melt pressure plate pump, it can not only conduct the heat generated by the heating rod to the surface of the hot melt adhesive through the protrusions, thus rapidly heating the initially solid hot melt adhesive to facilitate the continuous supply of the melted and fluid hot melt adhesive liquid from the dispensing hole, but also accelerate the melting of the hot melt adhesive in the area around the dispensing hole and enable the fluid adhesive liquid to quickly converge in the area around the dispensing hole to ensure the efficiency of the supply. Furthermore, it improves the sealing performance between the pressure plate body and the hot melt adhesive cylinder, effectively preventing adverse interference caused by adhesive overflow. In addition, it guides the direction of adhesive flow and mixes and equalizes the adhesive liquid from various directions through staggered guide channels to improve the uniformity and consistency of the supply pressure. Moreover, the beveled ends of each protrusion connect the guide channels formed between adjacent protrusions in the area near the seal between the pressure plate body and the hot melt adhesive cylinder, thereby achieving adaptive adjustment of the pressure in the area between the pressure plate body and the adhesive surface to ensure the flatness of the pressure plate, thus further improving the stability of the supply.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hot melt pressure plate pump, comprising: The structure comprises a carrier plate (200) for holding a hot melt glue cylinder (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) by at least two vertical connecting rods (500). A sealing groove (2) extending circumferentially is provided on the side surface of the pressure plate body (1). A sealing ring (3) is embedded in the sealing groove (2) and protrudes from the side surface of the pressure plate body (1). A through-hole (4) for dispensing glue is provided in the center of the pressure plate body (1). The structure is characterized by having several mounting brackets on the pressure plate body (1) and located outside the through-hole (4). Hole (5), each of the mounting holes (5) is fitted with a heating rod (6), the lower surface of the pressure plate body (1) gradually slopes downward in the radial outward direction along the pressure plate body (1), the lower surface of the pressure plate body (1) is provided with a plurality of first protrusions (11), second protrusions (12) and third protrusions (13) each extending radially along the pressure plate body (1), the thickness of each of the first protrusions (11), second protrusions (12) and third protrusions (13) gradually decreases in the radial outward direction along the pressure plate body (1), so that the lower surfaces of the first protrusions (11), second protrusions (12) and third protrusions (13) are flush and used for extrusion contact with the hot melt adhesive in the hot melt adhesive cylinder (100); Several first protrusions (11) are evenly spaced in the circumferential direction. Between any two adjacent first protrusions (11), there are two second protrusions (12) spaced in the circumferential direction. Between each second protrusion (12) and an adjacent first protrusion (11), there is a third protrusion (13). Between any two adjacent second protrusions (12), there is a diversion protrusion (10). The end face of each of the diversion protrusion (10), first protrusion (11), second protrusion (12) and third protrusion (13), whose lengths decrease sequentially, is aligned with the outer circumference of the pressure plate body (1). The surfaces are flush, and the other end of the diversion protrusion (10) extends to the edge outside the glue outlet hole (4). A notch (14) is opened between the ends of the two second protrusions (12) on each diversion protrusion (10) and the two second protrusions (12) on both sides of it, so that the guide flow channel formed between each diversion protrusion (10) and the second protrusions (12) on both sides is interconnected. Each diversion protrusion (10), first protrusion (11), second protrusion (12) and third protrusion (13) has an inwardly inclined chamfer (15) at the lower part of the end face away from the glue outlet hole (4).

2. The hot melt pressure plate pump according to claim 1, characterized in that: The lower surfaces of the diversion protrusion (10), the first protrusion (11), the second protrusion (12) and the third protrusion (13) are all flush.

3. The hot melt pressure plate pump according to claim 2, characterized in that: The lower surfaces of the diversion protrusion (10), the first protrusion (11), the second protrusion (12) and the third protrusion (13) are all arc-shaped surfaces.

4. The hot melt pressure plate pump according to claim 1, characterized in that: The heating rod (6) is provided with 16 rods.

5. The hot melt pressure plate pump according to claim 1, characterized in that: The upper surface of the pressure plate body (1) has an upward protrusion (8), and several horizontally extending and parallel mounting holes (5) are provided on the side surface of the protrusion (8) and on both sides of the glue outlet hole (4).

6. The hot melt pressure plate pump according to claim 1, characterized in that: The mounting hole (5) is a blind hole opened on the upper surface of the pressure plate body (1) and extending in the vertical direction.

7. The hot melt pressure plate pump according to claim 1, characterized in that: A cover plate (7) is provided on the top of the pressure plate body (1).

8. The hot melt pressure plate pump according to claim 1, characterized in that: The pressure plate body (1) includes a metal body and a high-temperature resistant coating applied to the surface of the metal body.

9. The hot melt pressure plate pump according to claim 2, characterized in that: The metal body is an aluminum body, and the high-temperature resistant coating is a Teflon coating.

10. The hot melt pressure plate pump according to claim 1, characterized in that: The lower surface of the movable plate (400) is connected to the upper surface of the pressure plate body (1) by two vertical connecting rods (500), so that the pressure plate body (1) can move vertically with the movable plate (400).

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