Automatic glue coating machine

Abstract

The present invention is an automatic glue coating machine suitable for gluing sand discs. The present invention comprises a box body and a driving system, wherein a rotating table and a glue return cylinder are arranged in the box body, wherein the rotating table is used for placing the sand disc to be processed, and the rotating table can drive the sand disc thereon to rotate together under the drive of the driving system, so that the glue dripped on the surface of the sand disc can be spin-coated and evenly spread, thereby improving the glue coating effect; the glue return cylinder has a cavity at its center, the rotating table is arranged in the cavity of the glue return cylinder, and the glue return cylinder can move up and down, and when coating the glue, the glue return cylinder rises so that the sand disc to be processed on the rotating table is located in the glue return cylinder, and the glue splashed during the spin coating is recovered into the box body by the glue return cylinder; the box body is also provided with a glue injection tube, and the glue is dripped from the glue injection tube onto the surface of the sand disc to be processed; the glue return cylinder comprises an outer cylinder and a baffle, and the baffle is arranged on the inner side of the outer cylinder along the circumferential direction, and the glue splashed from the sand disc to be processed during coating the glue is blocked and intercepted by the baffle, and flows back into the box body along the baffle, thereby realizing glue recovery.

Description

Technical Field

[0001] The invention relates to the technical field of glue coating equipment, in particular to an automatic glue coating machine suitable for gluing sand trays. Background Art

[0002] Sand disc, also known as steel paper grinding disc, high-speed grinding disc, grinding disc, is a disc-shaped coated abrasive formed by bonding steel paper as the base, silicon carbide or corundum as the abrasive, and synthetic resin or other synthetic binders. There are two forms of sand disc production: one is to first use rolled steel paper to coat glue and sand on the coated abrasive manufacturing machine to make a large roll, and then punch it into a disc-shaped product; the other is to first punch the steel paper into a disc-shaped paper of a certain specification, and then coat glue and sand one by one to make a grinding disc. The first method has a large production volume, good product quality, and high production efficiency, but the quality requirements of the equipment are also relatively high, especially the quality requirements of the punching tool are extremely high. For example, the general high-carbon tool steel punching tool is consumed very quickly and cannot meet the production requirements. The second method has a small production volume, but it is easy to operate and the equipment is simple. For small sand disc processing companies, the second method is more suitable, but the quality stability is poor. The reason is that the sand disc processing process involves multiple gluing, and the current gluing quality is unstable, which also greatly limits the production efficiency. In addition, when the glue is applied by rotary coating, glue splashes, which not only causes waste, but also pollutes the processing position and is difficult to clean. Summary of the invention

[0003] The purpose of the invention is to provide an automatic glue coating machine with high processing efficiency and automatic rotating glue coating to address the shortcomings of the existing sand tray glue coating.

[0004] The present invention is completed in the following manner: an automatic glue coating machine, which includes a box body and a driving system. A rotating table and a glue return cylinder are arranged in the box body. The rotating table is used for placing a sand disc to be processed. The rotating table can drive the sand disc thereon to rotate together under the drive of the driving system, so that the glue dripped on the surface of the sand disc is spin-coated and evenly spread, thereby improving the glue coating effect; the glue return cylinder has a cavity at the center, the rotating table is arranged in the cavity of the glue return cylinder, and the glue return cylinder can move up and down. When coating glue, the glue return cylinder rises so that the sand disc to be processed on the rotating table is located in the glue return cylinder, and the glue splashed during spin coating is recovered into the box body by the glue return cylinder; a glue injection tube is also arranged on the box body, and the glue is dripped from the glue injection tube onto the surface of the sand disc to be processed; the glue return cylinder includes an outer cylinder and a baffle, and the baffle is circumferentially arranged on the inner side of the outer cylinder. When coating glue, the glue splashed from the sand disc to be processed is blocked and intercepted by the baffle, and flows back into the box body along the baffle, thereby realizing glue recovery.

[0005] In the automatic glue coating machine, a fixing plate is provided on the outer cylinder, the fixing plate covers the outer cylinder, one end of the baffle is connected to the fixing plate, and the other end of the baffle is plugged into the bottom of the outer cylinder. When cleaning is required, the connection between the fixing plate and the outer cylinder is removed, and the baffle can be taken out together by lifting the fixing plate, and then placed back into the outer cylinder after cleaning. It is easy to use.

[0006] In the automatic glue coating machine, the glue return cylinder also includes a connecting plate, which is connected to the outer cylinder. The connecting plate drives the outer cylinder to rise or fall under the drive of the driving system. When coating, the connecting plate drives the outer cylinder, the baffle and the fixed plate to rise together. At this time, the sand disc to be processed is located in the cavity of the glue return cylinder for rotating glue coating. After the gluing is completed, the connecting plate drives the outer cylinder, the baffle and the fixed plate to descend and reset.

[0007] In the automatic glue coating machine, a glue return hole is provided at the bottom of the outer cylinder, and the glue blocked by the baffle flows along the baffle and falls into the box through the glue return hole, thereby avoiding glue residue at the bottom of the outer cylinder.

[0008] In the automatic glue coating machine, a sand tray seat is arranged on the rotating table, a positioning column is arranged on the sand tray seat, the sand tray to be processed is placed on the sand tray seat, and the positioning column passes through the center hole of the sand tray for positioning.

[0009] In the automatic gluing machine, a groove is provided at the bottom of the sand disc seat, and the groove is engaged with the end of the rotating table, so that the sand disc seat and the rotating table are relatively fixed and will not move during rotation; a limiting hole and a screw are provided on the side wall of the sand disc seat, the screw is located in the limiting hole and passes through the positioning column, a protrusion is provided at the bottom of the positioning column, and a spring is sleeved on the outer side of the positioning column. The sand disc seat and the positioning column can move up and down relative to each other, and the protrusion moves in the groove. When the pressing assembly is pressed down, the sand disc seat moves downward relative to the fixed position, and the protrusion abuts against the upper side of the groove, and the spring is compressed. When the gluing is completed, the pressing assembly is reset, and the sand disc seat moves upward under the elastic action of the spring, releasing the clamping connection between the sand disc seat and the rotating table. At this time, the sand disc seat and the sand disc can be removed horizontally.

[0010] In the automatic gluing machine, the automatic gluing machine also includes a pressing component, which includes a pressing head and a pressing drive. A positioning hole is provided at the end of the pressing head, and the positioning hole cooperates with the positioning column. The pressing head is pressed down or raised and reset under the drive of the pressing drive. When applying glue, the pressing head descends and cooperates with the sand disc seat to press the sand disc to be processed on the sand disc seat to prevent it from moving during the rotating glue application and affecting the glue application effect. After the glue application is completed, the pressing head rises and resets.

[0011] In the automatic glue coating machine, an opening is provided on the bottom side wall of the box body, and a glue recovery bucket connected to the opening is provided on the outside of the box body. The glue recovered in the box body flows from the opening into the glue recovery bucket for recovery.

[0012] In the automatic glue coating machine, an inclined panel is provided in the box body, so that the glue in the box body can flow out along the inclined surface to the opening, and the recovery is more complete.

[0013] In the automatic glue coating machine, the automatic glue coating machine also includes a glue barrel and a glue injection pump. The glue barrel is provided with a glue outlet, which is connected to the glue injection pipe. The glue in the glue barrel is pumped into the glue injection pipe by the glue injection pump to transport the glue.

[0014] In the automatic glue coating machine, the driving system includes a glue injection driving cylinder, a lifting driving cylinder and a rotating driving motor, wherein the glue injection driving cylinder is connected to the glue injection pipe, and the glue injection pipe moves driven by the glue injection driving cylinder. During glue injection, the glue injection pipe moves to a position above the sand tray; the lifting driving cylinder is connected to the connecting plate to drive the connecting plate to rise and fall; the rotating driving motor is connected to the rotating table, and the rotating table rotates driven by the rotating driving motor.

[0015] The present invention provides a rotating table for rotating glue coating of the sand tray. The spin coating method allows the glue to be quickly dispersed and formed on the surface of the sand tray, and the efficiency is high. At the same time, in order to solve the glue splashing problem of rotating glue coating, a glue return cylinder is provided on the outside of the rotating table. The glue return cylinder is arranged in the box body. The splashed glue is blocked and recovered by using a baffle in the glue return cylinder. The baffle is connected to the fixed plate and can be easily taken out to clean the glue residue. The present invention realizes automatic gluing of the sand tray, can complete multiple gluing operations in the production of the sand tray, has stable gluing quality and high efficiency, and realizes the recycling of glue at the same time.

[0016] Compared with the existing glue coating device, the invention has the characteristics of stable automatic gluing quality and good glue return effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is the front view of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the back side of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the box body and the glue return cylinder in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the glue return cylinder in the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the cooperation between the rotating table and the downward driving cylinder in the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the pressure head and the sand disc seat in the present invention.

[0024] Figure 8 for Figure 7 AA section view.

[0025] In the attached Figures 1 to 8 In the figure, 1 indicates a box body; 1a indicates an opening; 1b indicates an inclined panel; 1c indicates a mounting plate; 2 indicates a rotating table; 2a indicates a sanding disc seat; 2a1 indicates a groove; 2a2 indicates a limit hole; 2a3 indicates a screw; 2b indicates a positioning column; 2b1 indicates a bump; 2b2 indicates a spring; 3 indicates a return glue cylinder; 3a indicates an outer cylinder; 3a1 indicates a return glue hole; 3b indicates a baffle; 3c indicates a fixing plate; 3d indicates a connecting plate; 4 indicates a glue injection tube; 4a indicates a scraper; 5 indicates a glue recovery barrel; 6 indicates a glue barrel; 7 indicates a glue injection pump; 8 indicates a downward pressure assembly; 8a indicates a pressure head; 8b indicates a positioning hole; 8c indicates a downward pressure drive cylinder; 9 indicates a glue injection drive cylinder; 10 indicates a lifting drive cylinder; 11 indicates a rotation drive motor; 12 indicates a support seat; and 13 indicates a sanding disc. DETAILED DESCRIPTION

[0026] The present invention will be further described below by way of embodiments with reference to the accompanying drawings.

[0027] See attached Figures 1 to 8, an automatic glue coating machine, the automatic glue coating machine includes a box 1 and a driving system, the driving system includes a glue injection driving cylinder 9, a lifting driving cylinder 10 and a rotating driving motor 11; wherein a rotating table 2 and a glue return cylinder 3 are arranged in the box 1, and a sand disc seat 2a is arranged on the rotating table 2, and the sand disc seat 2a is a hollow structure, wherein a positioning column 2b is arranged inside, and the upper part of the positioning column 2b extends out of the sand disc seat 2a, and a groove 2a1 is arranged at the bottom of the sand disc seat 2a, and the groove 2a1 is engaged with the end of the rotating table 2, so that the sand disc seat 2a and the rotating table 2 are relatively fixed and will not move during rotation; a limiting hole 2a2 and a screw 2a3 are arranged on the side wall of the sand disc seat 2a, and the screw 2a3 is located in the limiting hole 2a2 and passes through the positioning column 2b, and the screw 2 a3 moves in the limiting hole 2a2 to limit the relative displacement between the positioning column 2b and the sand disc seat 2a. A convex block 2b1 is provided at the bottom of the positioning column 2b. A spring 2b2 is sleeved on the outer side of the positioning column 2b. One end of the spring 2b2 abuts on the convex block 2b1 of the positioning column 2b, and the other end abuts on the inner wall of the sand disc seat 2a. The sand disc seat 2a and the positioning column 2b can move up and down relative to each other. The convex block 2b1 moves in the groove 2a1. When the pressing assembly 8 is pressed down, the sand disc seat 2a moves downward relative to the positioning column 2b, and the convex block 2b1 abuts on the upper side of the groove 2a1, and the spring 2b2 is compressed. When the glue coating is completed, the pressing assembly 8 is reset, and the sand disc seat 2a moves upward under the elastic action of the spring 2b2, releasing the sand disc seat 2a and the rotary The turntable 2 is engaged, and the sand disc seat 2a and the sand disc can be removed horizontally at this time; the sand disc 13 to be processed is placed on the sand disc seat 2a, and the positioning column 2b passes through the center hole of the sand disc 13 for positioning. The rotating table 2 is connected to the rotating drive motor 11, and the rotating table 2 rotates under the drive of the rotating drive motor 11, driving the sand disc to be processed on the sand disc seat 2a to rotate together, so that the glue dripped on the surface of the sand disc 13 is evenly spin-coated and evenly spread, thereby improving the glue coating effect; the center of the glue return cylinder 3 has a cavity, and the rotating table 2 is arranged in the cavity of the glue return cylinder 3, and the glue return cylinder 3 can move up and down. When applying glue, the glue return cylinder 3 rises so that the sand disc to be processed on the rotating table 2 is located in the glue return cylinder 3, and the glue splashed during spin coating is recovered into the box body 1 by the glue return cylinder 3; specifically Specifically, the glue return cylinder 3 comprises two outer cylinders 3a and a connecting plate 3d, wherein a baffle 3b is arranged inside the outer cylinder 3a, and the baffle 3b is arranged on the inner side of the outer cylinder 3a along the circumferential direction, and a fixing plate 3c is arranged on the outer cylinder 3a, and the fixing plate 3c covers the outer cylinder 3a, and one end of the baffle 3b is connected to the fixing plate 3c, and the other end of the baffle 3b is plugged into the bottom of the outer cylinder 3a. When cleaning is required, the connection between the fixing plate 3c and the outer cylinder 3a is disassembled, and the baffle 3b can be taken out together by lifting the fixing plate 3c, and can be placed back into the outer cylinder 3a after cleaning, which is convenient to use; a glue return hole 3a1 is arranged at the bottom of the outer cylinder 3a, and the glue blocked by the baffle 3b flows along the baffle 3b and falls into the box body 1 through the glue return hole 3a1, so as to avoid glue residue at the bottom of the outer cylinder 3a;The connecting plate 3d is arranged between the two outer cylinders 3a and connected to the outer cylinder 3a. The connecting plate 3d is connected to the output end of the jacking drive cylinder 10. The jacking drive cylinder 10 drives the connecting plate 3d to rise and fall. When applying glue, the connecting plate 3d drives the outer cylinder 3a, the baffle 3b and the fixed plate 3c to rise together. At this time, the sand disc to be processed is located in the cavity of the glue return cylinder 3 for rotating glue coating. The glue splashed from the sand disc to be processed is blocked and intercepted by the baffle 3b, and flows back to the box body 1 along the baffle 3b to realize glue recovery. After the glue coating is completed, the connecting plate 3d drives the outer cylinder 3a, the baffle 3b and the fixed plate 3c together. The automatic glue coating machine also includes a pressing assembly 8, which includes a pressure head 8a and a pressing drive. A positioning hole 8b is provided at the end of the pressure head 8a, and the positioning hole 8b cooperates with the positioning column 2b. The pressing drive adopts a pressing drive cylinder 8c. A mounting plate 1c is provided on the box body 1, and the pressing drive cylinder 8c is fixed on the mounting plate 1c. The pressure head 8a is connected to the output end of the pressing drive cylinder 8c. The pressure head 8a is pressed down or raised and reset under the drive of the pressing drive cylinder 8c. When coating glue, the pressure head 8a descends and cooperates with the sand disc seat 2a to press the sand disc 13 to be processed on the sand disc The box 1 is provided with a glue injection tube 4 and a support seat 12 on the side of the box 1, the support seat 12 is fixed on the box 1, the glue injection drive cylinder 9 is fixed on the support seat 12, the glue injection tube 4 is connected to the output end of the glue injection drive cylinder 9, the glue injection tube 4 moves under the drive of the glue injection drive cylinder 9, and the side of the glue return cylinder 3 is provided with a channel for the glue injection tube 4 to move in and out. When injecting glue, the glue injection tube 4 moves to the top of the sand tray, and the glue drips from the glue injection tube 4 to the surface of the sand tray to be processed; a scraper 4a is provided on the bottom side of the glue injection tube 4 , the scraper 4a is used for the expansion and leveling of the glue during the gluing process; the automatic gluing machine also includes a glue barrel 6 and a glue injection pump 7, the glue barrel 6 is provided with a glue outlet, the glue outlet is connected to the glue injection tube 4, the glue in the glue barrel 6 is pumped into the glue injection tube 4 by the glue injection pump 7, and the glue is continuously transported; the bottom side wall of the box body 1 is provided with an opening 1a, and the outer side of the box body 1 is provided with a glue recovery barrel 5 connected to the opening 1a, and the glue recovered in the box body 1 flows from the opening 1a into the glue recovery barrel 5 for recovery; the box body 1 is provided with an inclined panel 1b, which facilitates the glue in the box body 1 to flow out along the inclined surface to the opening 1a, and the recovery is more sufficient. ;

[0028] When applying glue, the sand disc 13 to be processed is placed on the sand disc seat 2a, and the pressure head 8a is driven down by the downward pressure driving cylinder 8c, and is plugged and matched with the positioning column 2b on the rotating table 2 and pressed tightly. The sand disc seat 2a is forced to move downward, and the protrusion 2b1 on the positioning column 2b is against the upper end of the groove 2a1 of the sand disc seat 2a. The groove 2a1 is engaged and positioned with the end of the rotating table 2. The lifting driving cylinder 10 drives the outer cylinder 3a and the baffle 3b therein to rise through the connecting plate 3d. The sand disc 13 is in the cavity of the glue return cylinder 3. The rotating table 2 rotates under the drive of the rotary driving motor 11. The glue injection tube 4 moves to an appropriate position above the sand disc 13 under the drive of the glue injection driving cylinder 9, and the glue injection pump works to transport glue. The glue in the glue injection tube 4 is dripped onto the surface of the sand disk 13, and the scraper 4a is scraped on the surface of the sand disk 13. The splashed glue is blocked and collected by the baffle 3b, and the glue slides along the baffle 3b and is collected in the return box 1. The glue recovered in the box 1 flows along the inclined plate 1b at the bottom thereof to the opening 1a and enters the glue recovery barrel 5; when the glue is evenly coated on the surface of the sand disk, the glue injection tube 4 is reset, the rotating table 2 stops rotating, the outer cylinder 3a and the baffle 3b are lowered and reset, the pressure head 8a is raised and reset, and the sand disk seat 2a is moved up and reset under the action of the spring 2b2, and the engagement between the sand disk seat 2a and the rotating table 2 is released. At this time, the sand disk seat 2a and the sand disk thereon can be removed by translation for the next processing step.

Claims

1. An automatic glue coating machine, comprising a housing and a drive system, characterized in that A rotating table and a rubber return cylinder are provided in the box body. The rotating table is used to place the sand disc to be processed. The rotating table can drive the sand disc thereon to rotate together under the drive of the driving system; a sand disc seat is provided on the rotating table, and a positioning column is provided on the sand disc seat; a groove is provided at the bottom of the sand disc seat, and the groove can be engaged with the end of the rotating table to fix the sand disc seat and the rotating table relatively; a limiting hole and a screw are provided on the side wall of the sand disc seat, the screw is located in the limiting hole and passes through the positioning column, a convex block is provided at the bottom of the positioning column, and the positioning column A spring is provided on the outer side, the sand disc seat and the positioning column can move up and down relatively, the protrusion moves in the groove, and the sand disc seat is reset under the elastic action of the spring; the center of the glue return cylinder has a cavity, the rotating table is arranged in the cavity of the glue return cylinder, and the glue return cylinder can move up and down. When applying glue, the glue return cylinder rises so that the sand disc to be processed on the rotating table is located in the glue return cylinder, and the glue splashed during spin coating is recovered into the box body by the glue return cylinder; a glue injection tube is also provided on the box body; the glue return cylinder comprises an outer cylinder and a baffle, and the baffle is circumferentially arranged on the inner side of the outer cylinder.

2. The automatic glue coating machine according to claim 1, characterized in that The outer cylinder is provided with a fixing plate, which covers the outer cylinder, one end of the baffle is connected with the fixing plate, and the other end of the baffle is plugged with the bottom of the outer cylinder.

3. The automatic glue coating machine according to claim 2, characterized in that The glue return cylinder also includes a connecting plate, which is connected to the outer cylinder. The connecting plate drives the outer cylinder to rise or fall under the drive system. When applying glue, the connecting plate drives the outer cylinder, the baffle and the fixing plate to rise together.

4. The automatic glue coating machine according to claim 2 or 3, characterized in that The bottom of the outer cylinder is provided with a glue return hole.

5. The automatic glue coating machine according to claim 1, characterized in that The automatic glue coating machine also includes a pressing component, which includes a pressing head and a pressing drive. A positioning hole is provided at the end of the pressing head, and the positioning hole cooperates with the positioning column. The pressing head is pressed down or raised to reset under the drive of the pressing drive.

6. The automatic glue coating machine according to claim 1, characterized in that An opening is arranged on the side wall at the bottom of the box body, and a glue recovery bucket communicating with the opening is arranged on the outside of the box body; an inclined panel is arranged inside the box body.

7. The automatic glue coating machine according to claim 1, characterized in that The automatic glue coating machine also includes a glue barrel and a glue injection pump. The glue barrel is provided with a glue outlet, and the glue outlet is communicated with the glue injection pipe.

8. The automatic glue coating machine according to claim 3, characterized in that The driving system comprises a glue injection driving cylinder, a lifting driving cylinder and a rotation driving motor, wherein the glue injection driving cylinder is connected to the glue injection pipe, the glue injection pipe moves under the drive of the glue injection driving cylinder, and the glue injection pipe moves to the position above the sand tray during glue injection; the lifting driving cylinder is connected to the connecting plate to drive the connection plate to rise and fall; The rotary drive motor is connected with the rotary table, and the rotary table rotates under the driving of the rotary drive motor.

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