Heating pressure plate pump

Abstract

The utility model discloses a heating pressure plate pump which comprises a movable plate connected between the upper ends of piston rods of a jacking air cylinder and a pressure plate body connected with the movable plate through at least two vertical connecting rods, an air cylinder capable of moving up and down along with the pressure plate body is installed above the pressure plate body, and a vertically extending glue taking cylinder sleeve is arranged between the air cylinder and the pressure plate body. A glue outlet through hole communicated with the hot melt glue barrel and an inner cavity of the glue taking cylinder sleeve is formed in the center of the upper surface of the pressure plate body, a heating rod is embedded in each mounting hole in the pressure plate body, a glue outlet is formed in the side wall of the upper end of the glue taking cylinder sleeve, the glue outlet is connected with a glue dispensing valve through a glue supply pipe, and a spring is arranged on the outer side of the glue supply pipe in a sleeving manner. According to the hot melt glue supply device, solid hot melt glue can be quickly heated to facilitate continuous glue supply, a certain degree of freedom of the glue supply pipe can be kept, and the glue supply pipe has certain stiffness to avoid the situation that the temperature of the glue is too high, so that the glue supply pipe is bent and deformed, and the flow speed and the pressure of the glue in the glue supply pipe are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesives, and particularly relates to a heating platen pump. Background Art

[0002] Hot melt adhesive is a kind of plastic adhesive. The hot melt adhesive in a solid state at normal temperature can be melted into a liquid state with fluidity at a certain temperature, and the hot melt adhesive can be transported to a dispensing device by a plunger pump for dispensing after heating.

[0003] The plunger pump of the prior art needs to supply glue after the hot melt adhesive is heated, and cannot quickly heat the solid hot melt adhesive while in the plunger pump. Moreover, the glue supply pipe for transporting the heated hot melt adhesive is prone to bending and deformation due to the too high temperature of the hot melt adhesive, affecting the flow rate and pressure of the glue. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a heating platen pump, which can not only quickly heat the solid hot melt adhesive for continuous glue supply, but also keep a certain degree of freedom of the glue supply pipe, and also has a certain stiffness to avoid the bending and deformation of the glue supply pipe caused by the too high temperature of the glue, thus affecting the flow rate and pressure of the glue in it.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a heating platen pump, comprising: a carrier plate for placing a hot melt adhesive cylinder, at least two lifting cylinders vertically installed on the upper surface of the carrier plate, a movable plate connected to the upper ends of the piston rods of the lifting cylinders, and a platen body connected to the movable plate through at least two vertical connecting rods. A sealing groove extending along the entire circumferential direction is formed on the side surface of the platen body, and a sealing ring is embedded in the sealing groove and protrudes from the side surface of the platen body. A cylinder that can move up and down with it is installed on the movable plate above the platen body. A glue taking cylinder sleeve extending vertically is arranged between the cylinder and the platen body. A glue outlet through hole communicating the hot melt adhesive cylinder with the inner cavity of the glue taking cylinder sleeve is formed in the center of the upper surface of the platen body whose side surface is hermetically matched with the inner wall of the hot melt adhesive cylinder. A plurality of mounting holes are formed on the platen body outside the glue outlet through hole, and a heating rod is embedded in each mounting hole. A glue outlet is formed on the side wall of the upper end of the glue taking cylinder sleeve whose lower end communicates with the glue outlet through hole on the platen body. The glue outlet is connected to a dispensing valve through a glue supply pipe, and a spring is sleeved outside the glue supply pipe, and the inner wall of the spring is in pressing contact with the outer circumferential surface of the glue supply pipe.

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

[0007] 1. In the above solution, the glue supply pipe further includes a tubular body and a heat-insulating sheath layer wrapped around the outer side of the tubular body, and the spring is in pressing contact with the heat-insulating sheath layer.

[0008] 2. In the above solution, a one-way valve, a glue shut-off valve and a pressure sensor are provided between the other end of the glue supply pipe connected to the dispensing valve at one end and the glue outlet of the glue taking cylinder sleeve.

[0009] 3. In the above solution, two connecting blocks are provided on the front end face of the carrier plate and between two lifting cylinders. The connecting blocks are connected to a first support rod through a rotating shaft. A second support rod arranged parallel to the first support rod is connected to the first support rod through two first cross bars. A number of rollers are arranged at intervals between the two first cross bars respectively connected to both ends of the second support rod. The two ends of the core shaft of each roller are rotatably connected to the first support rod and the second support rod.

[0010] 4. In the above solution, a number of cushion blocks are provided on the lower surface of the first support rod and / or the second support rod.

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

[0012] 1. For the heating platen pump of the utility model, a cylinder that can move up and down along with it is installed above the platen body on the movable plate. A vertically extending glue taking cylinder sleeve is arranged between the cylinder and the platen body. A glue outlet through hole communicating the hot melt adhesive cylinder with the inner cavity of the glue taking cylinder sleeve is opened in the center of the upper surface of the platen body whose side surface is in sealing fit with the inner wall of the hot melt adhesive cylinder. A number of mounting holes are opened on the platen body outside the glue outlet through hole. A heating rod is embedded and installed in each mounting hole. A glue outlet is opened on the side wall of the upper end of the glue taking cylinder sleeve whose lower end communicates with the glue outlet through hole on the platen body. The glue outlet is connected to the dispensing valve through a glue supply pipe. A spring is sleeved outside the glue supply pipe. The inner wall of the spring is in pressing contact with the outer circumferential surface of the glue supply pipe. It can not only transfer the heat generated by the heating rod to the surface of the hot melt adhesive through the convex strip to quickly heat the hot melt adhesive in the initial solid state so as to discharge the hot melt adhesive liquid with fluidity after heating and melting outwards from the glue outlet through hole to realize continuous glue supply, but also keep a certain degree of freedom of the glue supply pipe, and also has a certain stiffness to avoid the glue supply pipe being bent and deformed due to the too high temperature of the flowing hot melt adhesive liquid, which affects the flow rate and pressure of the glue liquid in it, and ensures the stability and consistency of the glue supply flow parameters.

[0013] 2. The heating platen pump of the present utility model has two connecting blocks disposed on the front end surface of the carrier plate and between two lifting cylinders. The connecting blocks are connected to a first support rod through a rotating shaft. A second support rod arranged parallel to the first support rod is connected to the first support rod through two first cross bars. A plurality of rollers are arranged at intervals between the two first cross bars respectively connected to both ends of the second support rod. The core shafts at both ends of each roller are rotatably connected to the first support rod and the second support rod. The opening and closing of the rollers are controlled by the rotation of the rotating shaft, which is convenient for the feeding operation of a large-capacity cartridge, improves production efficiency, and does not occupy space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 is a schematic structural diagram of the heating platen pump of the present utility model;

[0015] Attached Figure 2 is an enlarged schematic view of part A in the attached Figure 1 of the present utility model;

[0016] Attached Figure 3 is a schematic diagram of a partial structure of the heating platen pump of the present utility model Figure 1 ;

[0017] Attached Figure 4 is a schematic diagram of a partial structure of the heating platen pump of the present utility model Figure 2 ;

[0018] Attached Figure 5 is a schematic diagram of the platen body of the heating platen pump of the present utility model.

[0019] In the above drawings: 100, hot melt adhesive cartridge; 200, carrier plate; 300, lifting cylinder; 400, movable plate; 500, vertical connecting rod; 1, platen body; 2, sealing groove; 3, sealing ring; 4, glue outlet through hole; 5, mounting hole; 6, heating rod; 7, cover plate; 71, through hole; 8, convex portion; 91, air outlet hole; 92, sealing rod; 10, glue supply pipe; 11, spring; 12, one-way valve; 13, glue closing valve; 14, pressure sensor; 15, connecting block; 16, rotating shaft; 171, first support rod; 172, second support rod; 18, connecting sleeve; 19, flange ring; 20, roller; 21, cylinder; 22, glue taking cylinder sleeve; 23, limiting bracket; 251, round nut; 252, fixing plate; 253, positioning column; 254, support plate; 255, connecting block; 26, glue outlet; 27, first cross bar; 28, second cross bar; 29, cushion block; 30, convex block; 31, circular hole; 32, pin; 33, limiting through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present patent can be further clearly understood through the following specific embodiments given, but they do not limit the present patent.

[0021] Embodiment 1: A heating chuck pump, comprising: a carrier plate 200 for placing a hot melt adhesive cartridge 100, at least two lifting cylinders 300 vertically installed 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 chuck body 1 connected to the movable plate 400 through at least two vertical connecting rods 500. A sealing groove 2 extending circumferentially is formed on the side surface of the chuck body 1, and a sealing ring 3 is embedded in the sealing groove 2 and protrudes from the side surface of the chuck body 1. A cylinder 21 that can move up and down with it is installed on the movable plate 400 and above the chuck body 1. A glue-taking cylinder sleeve 22 extending vertically is arranged between the cylinder 21 and the chuck body 1. A glue outlet through hole 4 communicating the interior of the hot melt adhesive cartridge 100 with the interior of the glue-taking cylinder sleeve 22 is formed in the center of the upper surface of the chuck body 1 whose side surface is in sealing fit with the inner wall of the hot melt adhesive cartridge 100. A plurality of mounting holes 5 are formed on the chuck body 1 and outside the glue outlet through hole 4, and a heating rod 6 is embedded in each mounting hole 5. A glue outlet 26 is formed on the side wall of the upper end of the glue-taking cylinder sleeve 22 whose lower end communicates with the glue outlet through hole 4 on the chuck body 1. The glue outlet 26 is connected to a dispensing valve through a glue supply pipe 10. A spring 11 is sleeved outside the glue supply pipe 10, and the inner wall of the spring 11 is in pressing contact with the outer circumferential surface of the glue supply pipe 10;

[0022] During use, the chuck is preheated to about 100 °C by the heating rod first, and the chuck is installed in the incoming material glue bucket of the hot melt adhesive, and the sealing ring on the chuck is in pressing contact with the inner wall of the hot melt adhesive cartridge to achieve sealing between the two;

[0023] In the initial state, the glue in the hot melt adhesive cartridge is in a solid state;

[0024] The temperature of the chuck is heated to 150 - 160 °C by the heat generated by the heating rod. The specific heating temperature can be set, and the maximum can be heated to 250 °C. The high-temperature chuck contacts the solid hot melt adhesive, and the glue is in a state of being heated to 150 °C for half an hour, so that the hot melt adhesive about 10 cm in the upper layer melts into a flowable liquid state. A certain pressure is always maintained between the chuck and the glue liquid level. When liquid glue overflows from the air outlet hole, a sealing rod is installed in the air outlet hole to seal the air outlet hole.

[0025] The above-mentioned glue supply pipe 10 further includes a tubular body and a heat-insulating sheath layer coated on the outside of the tubular body, and the spring 11 is in pressing contact with the heat-insulating sheath layer.

[0026] A one-way valve 12, a glue closing valve 13 and a pressure sensor 14 are arranged between the other end of the glue supply pipe 10 connected to the dispensing valve at one end and the glue outlet 26 of the glue-taking cylinder sleeve 22.

[0027] Two connecting blocks are arranged on the front end face of the above-mentioned carrier plate 200 and between two lifting cylinders 300. The connecting block 15 is connected to a first support rod 171 through a rotating shaft 16. A second support rod 172 arranged parallel to the first support rod 171 is connected to the first support rod 171 through two first cross bars 27. A plurality of rollers 20 are arranged at intervals between the two first cross bars 27 respectively connected to both ends of the second support rod 172. The two ends of the core shaft of each roller 20 are rotatably connected to the first support rod 171 and the second support rod 172.

[0028] When the hot melt adhesive cylinder needs to be loaded, the rotating shaft is driven to rotate so that the upper end faces of a plurality of rollers that rotate therewith are in a horizontal state or slightly inclined downward on the side away from the pressing plate, which is convenient for pushing the hot melt adhesive cylinder onto the carrier plate by means of the force of the rollers, facilitating the loading operation. In the non-use state, only need to drive the rotating shaft to rotate so that the first support rod, the second support rod, etc. are in a vertical state, without occupying much space.

[0029] A plurality of cushion blocks 29 are arranged on the lower surfaces of the above-mentioned first support rod 171 and second support rod 172.

[0030] Two of the above-mentioned first support rods 171 and second support rods 172 are provided, and the two second support rods 172 are arranged adjacent to each other and connected by a second cross bar 28.

[0031] A convex block 30 is arranged on the side surface of the above-mentioned first support rod 171 close to the connecting block 15. A circular hole 31 is opened on the convex block 30. When the first support rod 171 rotates to be perpendicular to the carrier plate 200, a pin 32 passes through the circular hole 31 and is embedded in a limit through hole 33 opened on the carrier plate 200.

[0032] The above-mentioned heating rods 6 are provided with 16 pieces, with a total power of 32KW, and can achieve a maximum temperature increase of 250°C within half an hour for temperature control.

[0033] The upper surface of the above-mentioned pressing plate body 1 has an upward convex part 8. A plurality of mounting holes 5 extending horizontally and parallel to each other are opened on the side surface of the convex part 8 and on both sides of the glue outlet through hole 4.

[0034] A limit bracket 39 is installed on the surface of the above-mentioned movable plate 400 close to the spring 11 and outside the spring 11.

[0035] The above-mentioned mounting hole 5 is a through hole.

[0036] A round nut 251 is sleeved on the outer side of the upper end of the above-mentioned glue-taking cylinder sleeve 22. Below the round nut 251 threadedly connected to the glue-taking cylinder sleeve 22 and on the outer side of the glue-taking cylinder sleeve 22, a fixing plate 252 is sleeved. The lower surface of the round nut 251 abuts against the upper surface of the fixing plate 252. The fixing plate 252 is connected to the support plate 254 through at least two vertically arranged positioning columns 253.

[0037] A connecting sleeve 18 is arranged between the above-mentioned glue-taking cylinder sleeve 22 and the pressure plate 1. The lower end of the connecting sleeve 18 is embedded in a flange ring 19 and is hermetically connected to the inner wall of the flange ring 19. The flange ring 19 and the upper surface of the pressure plate 1 are connected by bolts.

[0038] A sealing gasket is arranged between the above-mentioned flange ring 19 and the upper surface of the pressure plate body 1.

[0039] Embodiment 2: A heating pressure plate pump, comprising: a carrier plate 200 for placing a hot melt adhesive cylinder 100, at least two jacking cylinders 300 vertically installed on the upper surface of the carrier plate 200, a movable plate 400 connected between the upper ends of the piston rods of the jacking 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 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 cylinder 21 that can move up and down with it is installed on the movable plate 400 and above the pressure plate body 1. A vertically extending glue-taking cylinder sleeve 22 is arranged between the cylinder 21 and the pressure plate body 1. A glue outlet through hole 4 communicating the hot melt adhesive cylinder 100 with the inner cavity of the glue-taking cylinder sleeve 22 is formed in the center of the upper surface of the pressure plate body 1 whose side surface is hermetically matched with the inner wall of the hot melt adhesive cylinder 100. A plurality of mounting holes 5 are formed on the pressure plate body 1 and outside the glue outlet through hole 4. A heating rod 6 is embedded in each mounting hole 5. A glue outlet 26 is formed on the side wall of the upper end of the glue-taking cylinder sleeve 22 whose lower end communicates with the glue outlet through hole 4 on the pressure plate body 1. The glue outlet 26 is connected to a dispensing valve through a glue supply pipe 10. A spring 11 is sleeved on the outside of the glue supply pipe 10. The inner wall of the spring 11 is in pressing contact with the outer circumferential surface of the glue supply pipe 10.

[0040] Maintain the pressure between the pressure plate and the liquid level of the molten glue, and enable the glue liquid in the glue barrel that has been melted into a liquid state at high temperature to enter the glue outlet through hole. Start the cylinder, and drive the glue liquid in the glue outlet through hole to continuously output outward from the glue outlet of the glue-taking cylinder sleeve by repeatedly pulling and pushing the piston rod of the cylinder. During this process, the spring supports the glue supply pipe that is bent and deformed due to excessive temperature, so that the glue supply pipe can maintain a certain degree of freedom and can also have a certain degree of stiffness, avoiding the bending and deformation of the glue supply pipe resulting in unsmooth glue liquid transportation and excessive pressure in the pipe.

[0041] The above-mentioned glue supply tube 10 further includes a tubular body and a heat-insulating sheath layer covering the outer side of the tubular body, and the spring 11 is in extrusion contact with the heat-insulating sheath layer.

[0042] The upper surface of the above-mentioned pressure plate body 1 has an upward convex portion 8, and a plurality of mounting holes 5 extending horizontally and parallel to each other are opened on both sides of the glue outlet through hole 4 on the side surface of the convex portion 8.

[0043] The above-mentioned mounting hole 5 is a through hole.

[0044] The above-mentioned cover plate 7 and the pressure plate body 1 are fixedly connected by a plurality of bolts.

[0045] The upper surface of the above-mentioned cover plate 7 is provided with a through hole 71 communicating with the glue outlet through hole 4.

[0046] On the upper surfaces of the above-mentioned cover plate 7 and the pressure plate body 1 and on the outer sides of the glue outlet through hole 4, an air outlet hole 91 penetrating up and down is provided. The lower end of a sealing rod 92 penetrates into two mutually communicating air outlet holes 91 and is hermetically connected to the air outlet hole 91 by threads.

[0047] The lower end of the above-mentioned sealing rod 92 is set to be a pointed cone shape, and a handle is provided at the upper end of the sealing rod 92.

[0048] The above-mentioned sealing grooves 2 and the sealing rings 3 are both provided with two, and are arranged at intervals in the axial direction of the pressure plate body 1.

[0049] The above-mentioned pressure plate body 1 includes a metal body and a high-temperature resistant coating coated on the surface of the metal body.

[0050] The above-mentioned metal body is an aluminum body, and the high-temperature resistant coating is a Teflon coating.

[0051] The working principle of the present utility model is as follows:

[0052] During use, the pressure plate is preheated to about 100 °C by a heating rod, and the pressure plate is installed in the incoming material glue bucket of the hot melt adhesive, and the sealing ring on the pressure plate is in extrusion contact with the inner wall of the hot melt adhesive barrel to achieve sealing between the two;

[0053] In the initial state, the glue in the hot melt adhesive barrel is in a solid state;

[0054] The heat generated by the heating rod heats the temperature of the pressure plate to 150~160°C. The specific heating temperature can be set, and the maximum can be heated to 250°C. The high-temperature pressure plate contacts the solid hot-melt adhesive. The glue remains at 150°C for half an hour, causing the hot-melt adhesive about 10 cm above the upper layer to melt into a flowable liquid state. A certain pressure is always maintained between the pressure plate and the glue liquid level. When liquid glue overflows from the air vent, the sealing rod is inserted into the air vent to seal the air vent;

[0055] Maintain the pressure between the pressure plate and the molten glue liquid level, and make the glue liquid in the glue barrel that has been melted into a liquid state by high temperature enter the glue outlet through hole. Start the cylinder, and drive the glue liquid in the glue outlet through hole to continuously output outward from the glue outlet of the glue cylinder sleeve by the repeated pulling of the cylinder piston rod. During this process, the spring supports the glue supply pipe that is bent and deformed due to excessive temperature, so that the glue supply pipe can maintain a certain degree of freedom and also have a certain degree of stiffness, avoiding the bending and deformation of the glue supply pipe resulting in unsmooth glue liquid transportation and excessive pressure in the pipe.

[0056] When using the above heating pressure plate pump, it can not only transfer the heat generated by the heating rod to the surface of the hot-melt colloid through the convex strips to quickly heat the hot-melt adhesive in the initial solid state, so as to discharge the hot-melt adhesive liquid with fluidity after heating and melting from the glue outlet through hole to achieve continuous glue supply, but also maintain a certain degree of freedom of the glue supply pipe, and also have a certain degree of stiffness to avoid the bending and deformation of the glue supply pipe due to the too high temperature of the flowing hot-melt adhesive liquid, which affects the flow rate and pressure of the glue liquid in it, and ensures the stability and consistency of the glue supply flow parameters; moreover, by rotating the rotating shaft to control the opening and closing of the roller, it is not only convenient for the feeding operation of the large-capacity barrel and improves the production efficiency, but also does not occupy space.

[0057] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A heating platen 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 is characterized in that: a cylinder (21) that can move up and down with the movable plate (400) is installed above the pressure plate body (1), and a vertically extending adhesive taking hole is provided between the cylinder (21) and the pressure plate body (1). The cylinder sleeve (22) has a side surface that is sealed with the inner wall of the hot melt glue cylinder (100), and a glue outlet hole (4) that connects the hot melt glue cylinder (100) and the inner cavity of the glue cylinder sleeve (22) is provided in the center of the upper surface of the pressure plate body (1), and the pressure plate body (1) is provided with a plurality of mounting holes (5) located outside the glue outlet hole (4), and a heating rod (6) is embedded and installed in each mounting hole (5). The side wall of the upper end of the glue cylinder sleeve (22) that is connected with the glue outlet hole (4) on the pressure plate body (1) has a glue outlet (26), and the glue outlet (26) is connected to the glue dispensing valve through a glue supply hose (10). A spring (11) is sleeved on the outer side of the glue supply hose (10), and the inner wall of the spring (11) is in compression contact with the outer circumference of the glue supply hose (10).

2. The heating platen pump according to claim 1, characterized in that: The rubber supply hose (10) further comprises a tubular body and a thermal insulation jacket layer covering the outside of the tubular body, and the spring (11) is in extrusion contact with the thermal insulation jacket layer.

3. The heating platen pump according to claim 1, characterized in that: A one-way valve (12), a glue shut-off valve (13) and a pressure sensor (14) are provided between the other end of the glue supply hose (10) connected to the glue dispensing valve and the glue outlet (26) of the glue dispensing cylinder sleeve (22).

4. The heating platen pump according to claim 1, characterized in that: Two connecting blocks are arranged on the front end surface of the carrier plate (200) and between the two lifting cylinders (300); the connecting block (15) is connected to a first support rod (171) via a rotating shaft (16); a second support rod (172) arranged parallel to the first support rod (171) is connected to the first support rod (171) via two first cross bars (27); a plurality of rollers (20) are arranged at intervals between the two first cross bars (27) respectively connected to the two ends of the second support rod (172); and the two ends of the core shaft of each roller (20) are rotatably connected to the first support rod (171) and the second support rod (172).

5. The heating platen pump according to claim 4, characterized in that: A plurality of cushion blocks (29) are provided on the lower surface of the first support rod (171) and / or the second support rod (172).

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