Stable pressure plate pump

Abstract

The utility model discloses a stable pressure plate pump which comprises a movable plate connected between the upper ends of piston rods of jacking air cylinders and a pressure plate body connected with the movable plate through at least two vertical connecting rods, and a vertically-through glue outlet through hole is formed in the center of 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, a plurality of protruding strips extending in the radial direction of the pressure plate body are arranged on the lower surface of the pressure plate body, and a diagonal plane inclining inwards is arranged on the lower portion of the end face of the end, away from the glue outlet through hole, of each protruding strip. According to the utility model, the glue solution with flowability can be quickly collected to the surrounding area of the glue outlet through hole so as to ensure the glue supply efficiency, bad interference caused by overflow of the glue solution is effectively avoided, and the glue supply efficiency is improved on the basis of guiding the flowing direction of the glue solution. Self-adaptive adjustment of the pressure in the area between the pressure plate body and the surface of the glue solution is achieved, so that the flatness of the pressure plate is guaranteed, and the glue supply stability is improved.

Description

Technical Field

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

[0002] Glue dispensing is to apply, fill, or drip electronic glue, oil, or other liquids onto products to make them stick, fill, insulate, fix, and smooth the surface. During the glue dispensing process, a plunger pump is used to transport the glue in the glue barrel to the glue dispensing device. The plunger pump of the prior art has a slow speed in collecting glue in the barrel, poor sealing, and is prone to adverse interference caused by glue overflow. The uneven pressure in the area between the pressure plate and the surface of the glue liquid can easily affect the flatness of the pressure plate and the stability of the glue supply. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stable pressure plate pump, which can quickly collect fluid glue to the area around the glue outlet hole to ensure the efficiency of glue supply and effectively avoid adverse interference caused by glue overflow.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a stable pressure plate pump, comprising: a carrier plate for placing a 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 through at least two vertical connecting rods, 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 the lower surface of the pressure plate body is radially outward along the pressure plate body. The pressure plate body is gradually inclined downward in the direction of the pressure plate, and the lower surface of the pressure plate body is provided with a plurality of convex strips, each of which extends in the radial direction of the pressure plate body. The thickness of each of the convex strips gradually decreases in the radial outward direction of the pressure plate body, so that the lower surfaces of the plurality of convex strips are flush, and the plurality of convex strips are arranged at equal intervals in the circumferential direction, so as to form a guide flow channel between any two adjacent convex strips, and the end face of one end of the convex strip is flush with the outer circumferential surface of the pressure plate body, and the other end of the convex strip extends to the edge of the outer side of the glue outlet through hole, and each of the convex strips is provided with an inwardly inclined chamfered surface at the lower part of the end face of one end away from the glue outlet through hole.

[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 is used for extrusion contact with the upper surface of the hot melt adhesive, and a plurality of mounting holes are provided on the pressure plate body and located outside the adhesive outlet through hole, and a heating rod is embedded in each mounting hole.

[0007] 2. In the above solution, the lower surface of each of the convex strips is an arc-shaped surface.

[0008] 3. In the above solution, there are 16 heating rods.

[0009] 4. In the above scheme, there are two sealing grooves and two sealing rings, which are spaced apart in the axial direction of the pressure plate body.

[0010] 5. In the above solution, the pressure plate body includes a metal body and a high temperature resistant coating coated on the surface of the metal body.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The utility model provides a stable pressure plate pump, wherein the lower surface of the pressure plate body gradually inclines 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 convex strips each extending in the radial direction of the pressure plate body, and the thickness of each convex strip gradually decreases in the radial outward direction of the pressure plate body, so that the lower surfaces of the plurality of convex strips are flush, and the plurality of convex strips are arranged at equal intervals in the circumferential direction, so that a guide flow channel is formed between any two adjacent convex strips, and the end face of one end of the convex strip is flush with the outer circumferential surface of the pressure plate body, and the other end of the convex strip extends to the edge of the outer side of the glue outlet through hole, and each convex strip is away from one end of the glue outlet through hole The lower part of the end face is provided with an inwardly inclined bevel surface, which can realize the rapid collection of fluid glue to the area around the glue outlet hole to ensure the efficiency of glue supply, and improve the sealing performance between the pressure plate body and the hot melt glue cylinder, effectively avoiding adverse interference caused by overflow of the glue liquid, and on the basis of guiding the flow direction of the glue liquid, the bevel surface at the end of each convex strip is used to connect the guide flow channel formed between each adjacent convex strip in the area close to the sealing part of the pressure plate body and the hot melt glue cylinder, so as to realize 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 glue supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 This is a schematic diagram of the structure of the stable pressure plate pump of the utility model;

[0014] Attached Figure 2 The local structure of the stable pressure plate pump of the utility model is shown in FIG. Figure 1 ;

[0015] Attached Figure 3 For the utility model Figure 2 Schematic diagram of the cross section along AA;

[0016] Attached Figure 4The local structure of the stable pressure plate pump of the utility model is shown in FIG. Figure 2 ;

[0017] Attached Figure 5 It is a schematic diagram of the lower surface of the pressure plate body of the stable pressure plate pump of the utility model.

[0018] In the above drawings: 100, hot melt glue cylinder; 200, carrier plate; 300, lifting cylinder; 400, movable plate; 500, vertical connecting rod; 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, chamfered surface; 11, convex strip. DETAILED DESCRIPTION

[0019] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0020] Embodiment 1: A stable pressure plate pump, 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, 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 is provided in the center of the pressure plate body 1, and the lower surface of the pressure plate body 1 is gradually extended in the radial outward direction along the pressure plate body 1. The pressure plate body 1 is gradually inclined downward, and the lower surface of the pressure plate body 1 is provided with a plurality of convex strips 11 each extending radially of the pressure plate body 1, and the thickness of each convex strip 11 gradually decreases in the radial outward direction of the pressure plate body 1, so that the lower surfaces of the plurality of convex strips 11 are flush, and the plurality of convex strips 11 are arranged at equal intervals in the circumferential direction, so as to form a guide flow channel between any two adjacent convex strips 11, and the end face of one end of the convex strip 11 is flush with the outer circumferential surface of the pressure plate body 1, and the other end of the convex strip 11 extends to the edge of the outer side of the glue outlet through hole 4, and each of the convex strips 11 is provided with an inwardly inclined chamfered surface 10 at the lower part of the end face of one end away from the glue outlet through hole 4;

[0021] In the initial state, the glue in the hot melt glue cylinder is solid;

[0022] 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.

[0023] The lower surface of the platen body 1 is used for extrusion contact with the upper surface of the hot melt adhesive. A plurality of mounting holes 5 are provided on the platen body 1 and outside the adhesive outlet hole 4. A heating rod 6 is embedded in each mounting hole 5.

[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] 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.

[0026] The lower surfaces of the convex strips 11 are all arc-shaped surfaces.

[0027] 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.

[0028] 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 .

[0029] The mounting hole 5 is a through hole.

[0030] 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 .

[0031] The pressure plate body 1 comprises a metal body and a high temperature resistant coating coated on the surface of the metal body.

[0032] Embodiment 2: A stable pressure plate pump, 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, 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 is provided in the center of the pressure plate body 1, and the lower surface of the pressure plate body 1 is gradually extended in the radial outward direction along the pressure plate body 1. The pressure plate body 1 is gradually inclined downward, and the lower surface of the pressure plate body 1 is provided with a plurality of convex strips 11 each extending radially of the pressure plate body 1, and the thickness of each convex strip 11 gradually decreases in the radial outward direction of the pressure plate body 1, so that the lower surfaces of the plurality of convex strips 11 are flush, and the plurality of convex strips 11 are arranged at equal intervals in the circumferential direction, so as to form a guide flow channel between any two adjacent convex strips 11, and the end face of one end of the convex strip 11 is flush with the outer circumferential surface of the pressure plate body 1, and the other end of the convex strip 11 extends to the edge of the outer side of the glue outlet through hole 4, and each of the convex strips 11 is provided with an inwardly inclined chamfered surface 10 at the lower part of the end face of one end away from the glue outlet through hole 4;

[0033] The pressure plate is continuously pressed downward, so that the glue liquid 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 cylinder is improved, and the adverse interference caused by the overflow of glue liquid is effectively avoided; the guide flow channel formed between each adjacent convex strip can also be connected in the area close to the sealing point between the pressure plate body and the hot melt glue 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 liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of glue supply.

[0034] The lower surface of each of the convex strips 11 is an arc-shaped surface.

[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] 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.

[0038] The cover plate 7 and the pressure plate body 1 are fixedly connected by a plurality of bolts.

[0039] 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 .

[0040] 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.

[0041] 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.

[0042] The hot melt adhesive cylinder 100 is disposed between the two lifting cylinders 300 .

[0043] The lower surface of the movable plate 400 is connected to the upper surface of the pressure plate body 1 via two vertical connecting rods 500 , so that the pressure plate body 1 can move in the vertical direction along with the movable plate 400 .

[0044] The working principle of the utility model is as follows:

[0045] 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;

[0046] In the initial state, the glue in the hot melt glue cylinder is solid;

[0047] 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;

[0048] 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.

[0049] The pressure plate is continuously pressed downward, so that the glue liquid 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 cylinder is improved, and the adverse interference caused by the overflow of glue liquid is effectively avoided; the guide flow channel formed between each adjacent convex strip can also be connected in the area close to the sealing point between the pressure plate body and the hot melt glue 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 liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of glue supply.

[0050] When the above-mentioned stable pressure plate pump is used, it can realize the rapid collection of fluid glue liquid to the area around the glue outlet hole to ensure the efficiency of glue supply, and improve the sealing performance between the pressure plate body and the hot melt adhesive cylinder, effectively avoiding adverse interference caused by overflow of glue liquid, and on the basis of guiding the flow direction of the glue liquid, the guide flow channel formed between each adjacent convex strip is connected 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 liquid surface to ensure the flatness of the pressure plate, thereby further improving the stability of glue supply.

[0051] 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 stable pressure plate pump, 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), wherein 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 is connected from top to bottom, and is characterized in that: the lower surface of the pressure plate body (1) gradually extends in the radial outward direction of the pressure plate body (1) The pressure plate body (1) is inclined downward, and the lower surface of the pressure plate body (1) is provided with a plurality of convex strips (11) each extending radially along the pressure plate body (1), and the thickness of each convex strip (11) gradually decreases in the radial outward direction along the pressure plate body (1), so that the lower surfaces of the plurality of convex strips (11) are flush, and the plurality of convex strips (11) are arranged at equal intervals in the circumferential direction, so that a guide flow channel is formed between any two adjacent convex strips (11), and the end surface of one end of the convex strip (11) is flush with the outer circumferential surface of the pressure plate body (1), and the other end of the convex strip (11) extends to the edge of the outer side of the glue outlet through hole (4), and each of the convex strips (11) is provided with an inwardly inclined chamfered surface (10) at the lower part of the end surface of one end away from the glue outlet through hole (4).

2. The stable pressure plate pump according to claim 1, characterized in that: The lower surface of the pressure plate body (1) is used for being in extrusion contact with the upper surface of the hot melt adhesive. A plurality of mounting holes (5) are provided on the pressure plate body (1) and are located outside the adhesive outlet through hole (4). A heating rod (6) is embedded and installed in each of the mounting holes (5).

3. The stable pressure plate pump according to claim 2, characterized in that: The lower surface of each of the convex strips (11) is an arc-shaped surface.

4. The stable pressure plate pump according to claim 2, characterized in that: There are 16 heating rods (6).

5. The stable pressure plate pump according to claim 1, characterized in that: Two sealing grooves (2) and two sealing rings (3) are provided, and are spaced apart in the axial direction of the pressure plate body (1).

6. The stable pressure plate pump according to claim 1, characterized in that: The pressure plate body (1) comprises a metal body and a high temperature resistant coating coated on the surface of the metal body.

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