Plunger pump pressure plate

Abstract

The utility model discloses a plunger pump pressure plate which comprises a pressure plate body, a vertically-through glue outlet through hole is formed in the center of the pressure plate body, a plurality of installation holes are formed in the pressure plate body and located on the outer side of the glue outlet through hole, a heating rod is installed in each installation hole in an embedded mode, and the heating rods are arranged on the pressure plate body. The lower surface of the pressure plate body gradually inclines downwards in the outward direction in the radial direction of the pressure plate body, and a plurality of first protruding strips extending in the radial direction of the pressure plate body are arranged on the lower surface of the pressure plate body. According to the hot melt glue supply device, hot melt glue can be rapidly heated so that hot melt glue liquid can be discharged outwards from the glue outlet through hole to achieve continuous glue supply, the glue liquid with fluidity can be rapidly collected to the surrounding area of the glue outlet through hole so that the glue supply efficiency can be guaranteed, and the sealing performance between the pressure plate body and a glue barrel is further improved; and bad interference caused by overflow of the glue solution is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a plunger pump pressure plate. Background Art

[0002] Glue dispensing is the process of applying, filling, or dripping electronic glue, oil, or other liquids onto products to make them stick, fill, insulate, fix, and have a smooth surface. During the glue dispensing process, a plunger pump is used to transport the glue in the glue cartridge to the glue dispensing device for glue supply.

[0003] When supplying hot melt adhesive, the pressure plate of the prior art plunger pump cannot heat the solid hot melt adhesive in the glue barrel, which is not convenient for continuous glue supply. The speed of glue gathering in the glue barrel is slow, which easily affects the glue supply efficiency. The poor sealing performance is easy to cause adverse interference due to glue overflow. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a plunger pump pressure plate, which can not only realize the rapid heating of hot melt adhesive so that the hot melt adhesive liquid can be discharged outwardly from the adhesive outlet through hole to realize continuous adhesive supply, but also realize the rapid gathering of fluid adhesive liquid to the area around the adhesive outlet through hole to ensure the efficiency of adhesive supply, and also improve the sealing performance between the pressure plate body and the adhesive cylinder, effectively avoiding adverse interference caused by overflow of adhesive liquid.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a plunger pump pressure plate, comprising: a pressure plate body, a sealing groove extending along the entire circumference is provided on the side surface of the pressure plate body, a sealing ring is embedded and installed in the sealing groove and protrudes from the side surface of the pressure plate body, a glue outlet through hole is provided in the center of the pressure plate body, and 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, the lower surface of the pressure plate body gradually tilts downward in the radial outward direction of the pressure plate body, so that the central area of ​​the lower surface of the pressure plate body is higher than the edge area, and the lower surface of the pressure plate body is provided with a plurality of first convex strips, each of which extends radially along the pressure plate body, and the thickness of each of the first convex strips gradually decreases in the radial outward direction of the pressure plate body, so that the lower surfaces of the plurality of first convex strips arranged at equal intervals in the circumferential direction are flush and used for extrusion contact with the upper part of the hot melt adhesive.

[0006] The further improved scheme in the above technical scheme is as follows:

[0007] 1. In the above scheme, two second ridges extending radially along the pressure plate body are arranged between any two of the first ridges, a diverter ridge is arranged between the two second ridges spaced apart in the circumferential direction, a third ridge extending radially along the pressure plate body is arranged between each of the second ridges and the adjacent first ridge, one end of each of the diverter ridges, the first ridge, the second ridge and the third ridge, which have decreasing lengths, is located at the outer edge 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 is connected to the guide channel formed between the second ridges on both sides of the diverter ridge.

[0008] 2. In the above solution, the lower surfaces of the diverter ridge, the first ridge, the second ridge and the third ridge are all flush.

[0009] 3. In the above solution, the lower surfaces of the diversion ridge, the first ridge, the second ridge and the third ridge are all arc-shaped surfaces.

[0010] 4. In the above solution, there are 16 heating rods.

[0011] 5. In the above solution, the upper surface of the pressure plate body has an upward protrusion, and a plurality of mounting holes extending in the horizontal direction and parallel to each other are provided on the side surface of the protrusion and located on both sides of the glue outlet through hole.

[0012] 6. In the above solution, the mounting hole is a through hole.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] 1. The utility model plunger pump pressure plate has a plurality of mounting holes on its pressure plate body and outside the glue outlet through hole, each mounting hole is embedded with a heating rod, the lower surface of the pressure plate body gradually tilts downward in the radial outward direction of the pressure plate body, so that the central area of ​​the lower surface of the pressure plate body is higher than the edge area, and the lower surface of the pressure plate body is provided with a plurality of first convex strips each extending in the radial direction of the pressure plate body, and the thickness of each first convex strip gradually decreases in the radial outward direction of the pressure plate body, so that the thickness of the plurality of first convex strips arranged at equal intervals in the circumferential direction is The lower surface is flush and is used for extrusion contact with the upper part of the hot-melt adhesive. The convex strips can transfer the heat generated by the heating rod to the surface of the hot-melt adhesive to quickly heat the hot-melt adhesive that is initially solid, so that the hot-melt adhesive liquid with fluidity that has been melted by heating can be discharged outward from the glue outlet through hole to realize continuous glue supply. The melting of the hot-melt adhesive in the area around the glue outlet through hole can be accelerated, and the fluid adhesive liquid can be quickly gathered to the area around the glue outlet through hole to ensure the efficiency of glue supply. The sealing performance between the pressure plate body and the rubber cylinder is also improved, effectively avoiding adverse interference caused by overflow of the glue liquid.

[0015] 2. The plunger pump pressure plate of the utility model, further, is provided with two second convex strips extending radially along the pressure plate body between any two first convex strips, a diverter convex strip is provided between the two second convex strips spaced apart in the circumferential direction, and a third convex strip extending radially along the pressure plate body is provided between each second convex strip and the adjacent first convex strip, and one end of each of the diverter convex strips, the first convex strips, the second convex strips and the third convex strips, which have decreasing lengths, is located at the outer edge of the pressure plate body, and the other end of the diverter convex strip extends to the edge of the outer side of the glue outlet through hole, and the two second convex strips on each diverter convex strip and located on both sides thereof are close to the outlet A notch is provided between the ends of the glue through holes, so that each diversion convex strip and the guide flow channels formed between the second convex strips on both sides thereof are interconnected, which not only realizes the guidance of the flow direction of the glue liquid, but also mixes and evenly pressurizes the glue liquid from various directions through the staggered guide flow channels to improve the uniformity and consistency of the glue supply pressure. The guide flow channels formed between the adjacent convex strips can also be connected in the area near the seal between the pressure plate body and the rubber 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 surface of the glue liquid to ensure the flatness of the pressure plate, thereby further improving the stability of the glue supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 This is a structural schematic diagram of the plunger pump pressure plate of the utility model;

[0017] Attached Figure 2 For the utility model Figure 1 Schematic diagram of the cross section along AA;

[0018] Attached Figure 3 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0019] Attached Figure 4 It is a partial structural schematic diagram of the plunger pump pressure plate of the utility model;

[0020] Attached Figure 5 It is a structural schematic diagram of the lower surface of the pressure plate body of the plunger pump pressure plate of the utility model.

[0021] In the above drawings: 1. pressure plate body; 2. sealing groove; 3. sealing ring; 4. glue outlet hole; 5. mounting hole; 6. heating rod; 7. cover plate; 71. through hole; 8. raised part; 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. DETAILED DESCRIPTION

[0022] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0023] Embodiment 1: A plunger pump pressure plate, comprising: a pressure plate body 1, a sealing groove 2 extending along the entire circumference is provided on the side surface of the pressure plate body 1, 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, a glue outlet through hole 4 penetrating from top to bottom is provided in the center of the pressure plate body 1, a plurality of mounting holes 5 are provided on the pressure plate body 1 and located outside the glue outlet through hole 4, a heating rod 6 is embedded and installed in each of the mounting holes 5, the lower surface of the pressure plate body 1 gradually tilts downward in the radial outward direction of the pressure plate body 1, so that the central area of ​​the lower surface of the pressure plate body 1 is higher than the edge area, the lower surface of the pressure plate body 1 is provided with a plurality of first convex strips 11 each extending in the radial direction of the pressure plate body 1, the thickness of each of the first convex strips 11 gradually decreases in the radial outward direction of the pressure plate body 1, so that the lower surfaces of the plurality of first convex strips 11 arranged at equal intervals in the circumferential direction are flush and used for extrusion contact with the upper part of the hot melt adhesive;

[0024] 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;

[0025] In the initial state, the glue in the hot melt glue cylinder is solid;

[0026] First, remove the sealing rod on the air outlet, and move the pressure plate downward until the lower surfaces of the first, second and third ridges on it 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.

[0027] Two second ridges 12 extending radially along the platen body 1 are arranged between any two of the above-mentioned first ridges 11, a diverter ridge 10 is arranged between the two second ridges 12 spaced apart in the circumferential direction, a third ridge 13 extending radially along the platen body 1 is arranged between each of the second ridges 12 and the adjacent first ridge 11, one end of each of the diverter ridges 10, the first ridge 11, the second ridge 12 and the third ridge 13 with decreasing lengths is located at the outer edge of the platen body 1, and the other end of the diverter ridge 10 extends to the edge of the outer side of the glue outlet hole 4, and a notch 14 is provided between the ends of the two second ridges 12 on both sides of each diverter ridge 10 close to the glue outlet hole 4, so that each diverter ridge 10 and the guide flow channel formed between the second ridges 12 on both sides thereof are connected to each other;

[0028] The pressure plate is continuously pressed downward, so that the glue in the glue barrel that has been melted into a liquid state by high temperature is continuously discharged outward from the glue outlet hole, so as to realize continuous glue supply to the subsequent dispensing valve, etc.; in the above process, the liquid glue can be quickly gathered to the area around the glue outlet hole under the guidance of the inclined lower surface of the pressure plate body to ensure the efficiency of glue supply, and the sealing performance between the pressure plate body and the hot melt glue barrel is improved, effectively avoiding adverse interference caused by overflow of glue; 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.

[0029] The lower surfaces of the diverter ridge 10 , the first ridge 11 , the second ridge 12 and the third ridge 13 are all flush.

[0030] 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.

[0031] 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.

[0032] The upper surface of the pressure plate body 1 has an 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 protrusion 8 and located on both sides of the glue outlet through hole 4 .

[0033] The mounting hole 5 is a through hole.

[0034] There are two sealing grooves 2 and two sealing rings 3 , which are spaced apart in the axial direction of the pressure plate body 1 .

[0035] The pressure plate body 1 comprises a metal body and a high temperature resistant coating coated on the surface of the metal body.

[0036] The metal body is an aluminum body, and the high temperature resistant coating is a Teflon coating.

[0037] Embodiment 2: A plunger pump pressure plate, comprising: a pressure plate body 1, a sealing groove 2 extending along the entire circumference is provided on the side surface of the pressure plate body 1, 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, a glue outlet through hole 4 penetrating from top to bottom is provided in the center of the pressure plate body 1, a plurality of mounting holes 5 are provided on the pressure plate body 1 and located outside the glue outlet through hole 4, a heating rod 6 is embedded and installed in each of the mounting holes 5, the lower surface of the pressure plate body 1 gradually tilts downward in the radial outward direction of the pressure plate body 1, so that the central area of ​​the lower surface of the pressure plate body 1 is higher than the edge area, the lower surface of the pressure plate body 1 is provided with a plurality of first convex strips 11 each extending in the radial direction of the pressure plate body 1, the thickness of each of the first convex strips 11 gradually decreases in the radial outward direction of the pressure plate body 1, so that the lower surfaces of the plurality of first convex strips 11 arranged at equal intervals in the circumferential direction are flush and used for extrusion contact with the upper part of the hot melt adhesive;

[0038] The temperature of the pressure plate is heated to 150~160℃ by the heat generated by the heating rod. The specific heating temperature can be set and can be heated to 250℃ at the highest. The high-temperature pressure plate is in contact with the solid hot-melt adhesive. The glue is heated at 150℃ for half an hour, so that the hot-melt adhesive located in the upper layer of about 10 cm is melted 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 absorption, thereby accelerating the melting of the hot-melt adhesive in the surrounding area of ​​the adhesive outlet through-hole.

[0039] There are 16 heating rods 6 .

[0040] 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.

[0041] 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.

[0042] The cover plate 7 and the pressure plate body 1 are fixedly connected by a plurality of bolts.

[0043] The upper surface of the cover plate 7 is provided with a through hole 71 which is connected with the glue outlet through hole 4 .

[0044] 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.

[0045] 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.

[0046] The working principle of the utility model is as follows:

[0047] 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;

[0048] In the initial state, the glue in the hot melt glue cylinder is solid;

[0049] 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;

[0050] 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.

[0051] The pressure plate is continuously pressed downward, so that the glue in the glue barrel that has been melted into a liquid state by high temperature is continuously discharged outward from the glue outlet hole, so as to realize continuous glue supply to the subsequent dispensing valve, etc.; in the above process, the liquid glue can be quickly gathered to the area around the glue outlet hole under the guidance of the inclined lower surface of the pressure plate body to ensure the efficiency of glue supply, and the sealing performance between the pressure plate body and the hot melt glue barrel is improved, effectively avoiding adverse interference caused by overflow of glue; 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.

[0052] When the plunger pump pressure plate is used, it can transfer the heat generated by the heating rod to the surface of the hot-melt colloid through the convex strips to achieve rapid heating of the hot-melt adhesive that is initially solid, so that the hot-melt adhesive liquid that has been heated and melted and has fluidity can be discharged from the glue outlet through the glue outlet hole to achieve continuous glue supply, and it can also accelerate the melting of the hot-melt colloid in the area around the glue outlet through the hole and achieve the rapid gathering of the fluid adhesive liquid to the area around the glue outlet through the hole to ensure the efficiency of glue supply, and also improve the sealing performance between the pressure plate body and the rubber cylinder, effectively avoiding adverse interference caused by the overflow of the adhesive liquid; further, it can not only guide the flow direction of the adhesive liquid, but also mix and evenly press the adhesive liquid 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 the adjacent convex strips through the chamfered surface at the end of each convex strip in the area near the sealing point between the pressure plate body and the rubber cylinder, thereby achieving 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 glue supply.

[0053] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A plunger pump pressure plate, comprising: A pressure plate body (1), a sealing groove (2) extending along the entire circumference is provided on the side surface of the pressure plate body (1), 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), and a glue outlet through hole (4) is provided in the center of the pressure plate body (1) and extends vertically. The characteristic is that: a plurality of mounting holes (5) are provided on the pressure plate body (1) and located outside the glue outlet through hole (4), and a heating rod (6) is embedded and installed in each mounting hole (5), and the pressure plate body (1) The lower surface gradually slopes downward in a radially outward direction along the platen body (1), so that the central area of ​​the lower surface of the platen body (1) is higher than the edge area. The lower surface of the platen body (1) is provided with a plurality of first convex strips (11) each extending radially along the platen body (1), and the thickness of each first convex strip (11) gradually decreases in a radially outward direction along the platen body (1), so that the lower surfaces of the plurality of first convex strips (11) arranged at equal intervals in the circumferential direction are flush and are used for extrusion contact with the upper part of the hot melt adhesive.

2. The plunger pump pressure plate according to claim 1, characterized in that: Two second convex strips (12) are arranged between any two of the first convex strips (11), each of which extends radially along the pressure plate body (1); a diverter convex strip (10) is arranged between the two second convex strips (12) arranged at intervals in the circumferential direction; a third convex strip (13) is arranged radially along the pressure plate body (1) between each of the second convex strips (12) and the adjacent first convex strips (11); the diverter convex strips (10), the first convex strips (11), the third convex strips (13) are arranged in descending order of length. One end of each of the second convex strip (12) and the third convex strip (13) is located at the outer edge of the pressure plate body (1), and the other end of the diverter convex strip (10) extends to the outer edge of the glue outlet hole (4). A notch (14) is provided between the ends of the two second convex strips (12) located on both sides of each diverter convex strip (10) close to the glue outlet 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.

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

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

5. The plunger pump pressure plate according to claim 1, characterized in that: There are 16 heating rods (6).

6. The plunger pump pressure plate according to claim 1, characterized in that: The upper surface of the pressure plate body (1) has an upward protrusion (8), and a plurality of mounting holes (5) extending in a horizontal direction and parallel to each other are provided on the side surface of the protrusion (8) and located on both sides of the glue outlet through hole (4).

7. The plunger pump pressure plate according to claim 6, characterized in that: The mounting hole (5) is a through hole.

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