Automatic sand blasting machine for treating mold

Abstract

The utility model discloses an automatic sand blasting machine for processing molds, which comprises a case, and case doors are respectively hinged to the left side and the right side of the front end of the case; the rear side of the machine box is provided with a tank pressing bin communicating with a spray head in the machine box through a sand outlet pipe. A spray head moving module for driving a spray head to move forwards, backwards, leftwards and rightwards is mounted at the upper end in the case; a latticed support frame for placing a mold is arranged in the case below the spray head; an ash hopper is arranged below the case, and the bottom of the ash hopper is communicated with a recovery pipe; a control cabinet is arranged on one side of the case; the mold grinding device can grind molds of different sizes, the application range is widened, the automatic moving module in the device controls the spray head to move to grind the molds, the spray head does not need to be manually held for grinding, the labor intensity of manual operation is reduced, an observation window does not need to be independently arranged, and the working efficiency is improved. The sealing performance of the whole device is guaranteed, and dust can be prevented from flying out to injure the human body.

Description

Technical Field

[0001] The utility model relates to the technical field of surface treatment, in particular to an automatic sandblasting machine for treating a mold. Background Art

[0002] During the use of rubber product molds, a layer of carbon scale will gradually form on the surface. As the carbon scale thickens, it will affect the clarity of the surface markings of the rubber products. The thicker carbon scale layer will also partially fall off during the vulcanization and demolding process, resulting in poor product appearance.

[0003] Since the current surface treatment methods for molds such as laser and mold cleaning glue are cumbersome to operate and have high costs, most factories choose sandblasting, which is simple, fast and effective. During the sandblasting operation, a person outside the sandblasting machine holds a spray gun through wear-resistant gloves integrated with the sandblasting machine and points the nozzle to the position of the mold that needs to be processed. The air compressor is turned on and the jet force of the resin sand is driven by the airflow to spray onto the surface of the mold. The cleaning situation is observed through the transparent observation window until the carbon scale is cleaned up.

[0004] However, the existing sandblasting machines have the following disadvantages: 1) When operated manually, the person holding the spray gun outside the sandblasting machine is subject to a large recoil impact force, and some molds are large in size, so the arm needs to be stretched forward as much as possible, which greatly increases the labor intensity; 2) When operated manually, it is difficult to ensure that the nozzle and the mold surface are always at an equidistant position, and the treatment quality and consistency of the mold surface treatment cannot be guaranteed. The observation window is easily covered with dust, causing the operator to be unable to observe the internal treatment effect and resulting in missed spraying, requiring multiple rework; 3) When the resin sand is sprayed on the mold surface, a lot of dust will fly out, and a small amount of overflow will inevitably occur, which poses a health hazard to the operator of inhaling dust; 4) Due to the limited size of the sandblasting machine, it can only handle molds of a single size, and cannot handle larger molds. It can only be manually polished with sandpaper to clean the carbon scale.

[0005] The existing patent 202221634024.9 discloses a sandblasting machine for composite PVD coating, wherein the auxiliary device comprises a threaded rod, the threaded rod is rotatably connected to the inner bottom surface of the sandblasting machine body, a gear is fixedly installed at one end of the threaded rod away from the inner bottom surface of the sandblasting machine body, a sliding seat is bolted to the surface of the threaded rod, a vertical rod is fixedly installed on the inner bottom surface of the sandblasting machine body, the sliding seat is slidably connected with the threaded rod and the vertical rod, a spray gun is fixedly installed on the surface of the sliding seat, a slide groove is provided on the top surface of the sandblasting machine body, a slide plate is slidably connected to the inside of the slide groove, a rack is fixedly installed at one end of the slide plate away from the slide groove, a cylinder is fixedly installed on the top surface of the sandblasting machine body, and the output end of the cylinder is fixedly connected to the slide plate. This patent solves the problem that the existing sandblasting machine for composite PVD coating is manually sandblasted when the workpiece needs to be sandblasted, thereby improving production efficiency. However, this patent can only adjust the upper and lower positions of the spray gun, and is only applicable to molds of a single size. Molds that exceed the new limited size range can only be polished manually. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an automatic sandblasting machine for processing molds, which can perform surface treatment on molds of different sizes without the need for manual hand-held nozzles, thereby reducing the labor intensity of operators and avoiding grinding errors that affect the grinding effect when the hand-held nozzle is used for grinding.

[0007] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0008] An automatic sandblasting machine for processing molds comprises a chassis, and the left and right sides of the front end of the chassis are respectively hinged with chassis doors; the rear side of the chassis is provided with a pressure tank which is connected with a nozzle inside the chassis through a sand outlet pipe and provides resin sand to the inside of the chassis under the action of airflow; the upper end of the inside of the chassis is equipped with a nozzle moving module which drives the nozzle to move in four directions of front, back, left and right, and the nozzle moving module comprises a left and right moving component which controls the left and right movement of the nozzle and a front and back moving component which controls the front and back movement of the nozzle; a grid-shaped support frame for placing molds of different sizes is arranged inside the chassis below the nozzle; an ash hopper for receiving polished resin sand is arranged below the chassis, and the bottom of the ash hopper is connected with a recovery pipe for screening and recovering the polished resin sand; a control cabinet is arranged on one side of the chassis, and the output end of the control cabinet is respectively connected with the nozzle moving module and the controlled end of the nozzle.

[0009] The above-mentioned automatic sandblasting machine for processing molds, the left and right moving assembly includes a first guide rail symmetrically arranged on the upper part of the front and rear side walls of the chassis, and a first slider is slidably arranged on the first guide rail to drive the front and rear moving assembly to move left and right; a first motor is arranged on the inner wall of the chassis to drive the first slider to move left and right at a uniform speed, the controlled end of the first motor is connected to the output end of the control cabinet, and the first motor and the first slider are connected through a first transmission mechanism.

[0010] In the above-mentioned automatic sandblasting machine for processing molds, limiters are slidably provided on both sides of the first guide rail to limit the left and right moving distance of the first sliding block.

[0011] The above-mentioned automatic sandblasting machine for processing molds, the forward and backward moving component includes a second guide rail installed between the end surfaces of two first sliders, and a second slider for driving the nozzle to move forward and backward is slidably arranged on the second guide rail; a bracket is arranged below the second slider, and a vertical sleeve for installing the nozzle is arranged on the bracket; the second slider is provided with a second motor for controlling the second slider to move forward and backward at a uniform speed, the controlled end of the second motor is connected to the output end of the control cabinet, and the second motor and the second slider are connected through a second transmission mechanism.

[0012] In the above-mentioned automatic sandblasting machine for processing molds, limiters for limiting the forward and backward movement of the nozzle are slidably provided on both sides of the second guide rail.

[0013] The above-mentioned automatic sandblasting machine for processing molds is also provided with a dust removal device on the rear side of the chassis for cleaning the resin sand after grinding and sending it to the pressing tank for reuse; one end of the dust removal device is connected to the recovery pipe through a first connecting pipe, and the dust removal device is connected to the pressing tank through a second connecting pipe; exhaust fans are respectively provided on the first connecting pipe and the second connecting pipe.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The utility model provides an automatic sandblasting machine for processing molds, which can grind molds of different sizes and improve the scope of application. The mold is grinded by controlling the movement of the nozzle through an automatic moving module inside the device. There is no need to manually hold the nozzle for grinding, which reduces the labor intensity of manual operation. There is no need to set a separate observation window, which ensures the sealing of the entire device and can also prevent dust from flying out and causing damage to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the specific structure of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is a left view of the utility model;

[0019] Figure 4 It is a top view of the utility model;

[0020] Figure 5 for Figure 3 AA section view in the figure;

[0021] Figure 6 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 7 It is a schematic diagram of the specific structure of the nozzle moving module of the utility model.

[0023] Among them: 1. Chassis, 2. Box door, 3. Dust removal equipment, 4. Pressurized tank bin, 5. First connecting pipe, 6. Second connecting pipe, 7. Ash hopper, 8. Recovery pipe, 9. Control cabinet, 10. Sand outlet pipe, 11. Left and right moving assembly, 111. First guide rail, 112. First slider, 12. Forward and backward moving assembly, 121. Second guide rail, 122. Second slider, 123. Bracket, 124. Sleeve, 13. Nozzle, 14. Mold, 15. Support frame, 16. Limiter. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] An automatic sandblasting machine for processing abrasive tools, such as Figures 1 to 7 As shown, it includes a chassis 1, a pressure tank bin 4 is arranged at the rear side of the chassis 1, and cabinet doors 2 are hinged on the left and right sides of the front end of the chassis 1 respectively. A nozzle moving module for driving a nozzle 13 to move in four directions of front, back, left and right is installed in the upper part of the interior of the chassis 1. A grid-shaped support frame 15 for placing a mold 14 is arranged inside the chassis 1 below the nozzle 13, and an ash hopper 7 for receiving polished resin sand is arranged below the chassis 1.

[0026] like Figure 5 As shown, the nozzle moving module includes a left-right moving component 11 for controlling the nozzle 13 to move left-right and a front-back moving component 12 for controlling the nozzle 13 to move front-back.

[0027] The left-right moving assembly 11 includes a first guide rail 111 symmetrically arranged on the upper part of the front and rear side walls of the chassis 1. Figure 7 As shown, a first sliding block 112 is slidably disposed on the first guide rail 111 to drive the forward and backward moving assembly 12 to move left and right at a uniform speed.

[0028] Limiters 16 are slidably arranged on both sides of the first guide rail 111 to limit the left and right moving distance of the first slider 112. A first motor that drives the first slider 112 is arranged on the inner wall of the chassis 1. The first motor and the first slider 112 are connected through a first transmission mechanism.

[0029] The forward and backward moving assembly 12 includes a second guide rail 121 installed between the end surfaces of the two first sliders 112. Figure 7As shown, a second slide block 122 is slidably disposed on the second guide rail 121 , a bracket 123 is disposed below the second slide block 122 , and a vertical sleeve 124 for mounting the nozzle 13 is disposed on the bracket 123 .

[0030] The second guide rail 121 is slidably provided with stoppers 16 for limiting the forward and backward movement of the nozzle 13. The second slider 122 is provided with a second motor for controlling the uniform speed movement of the second slider 122. The second motor and the second slider 122 are connected via a second transmission mechanism.

[0031] Under the control of the first motor, the nozzle 13 can be moved in the left and right directions, and under the control of the second motor, the nozzle 13 can move forward and backward at a certain speed. During the grinding process, the left and right directions can be used as a reference. After the first slider 112 moves a unit distance, the second slider 122 moves from front to back or from back to front. The first slider 112 moves another unit distance, and so on, until the entire mold surface is polished, thereby evenly polishing the mold surface.

[0032] The nozzle 13 is connected to the pressing tank 4 through the sand outlet pipe 10, and is used to spray resin sand to the surface of the mold 14 under the action of airflow to treat the mold surface.

[0033] like Figure 2 As shown, the bottom of the ash hopper 7 is also connected to a recovery pipe 8 for screening and recovering resin sand.

[0034] A dust removal device 3 is also provided at the rear side of the chassis 1. Figure 4 As shown, one end of the recovery pipe 8 is connected to the dust removal device 3 through the first connecting pipe 5, and the first connecting pipe 5 is provided with an exhaust fan; at the same time, the dust removal device 3 is connected to the pressing tank bin 4 through the second connecting pipe 6, and the second connecting pipe 6 is also provided with an exhaust fan; the dust removal device 3 can remove dust and debris during grinding, and send the cleaned resin sand into the pressing tank bin 4 through the second connecting pipe 6, and the cleaned resin sand can be reused.

[0035] A control cabinet 9 is also provided on one side of the chassis 1, and a PLC controller is provided in the control cabinet 9. The PLC controller is used to control the actions of the tank pressing bin 4, the dust removal device 3, the first motor, and the second motor.

[0036] In this embodiment, the limiter 16 adopts a travel switch, the output end of the travel switch is connected to the input end of the PLC controller, and the PLC controller controls the working state of the first motor and the second motor according to the received signal of the travel switch.

[0037] The operation mode of the utility model is as follows:

[0038] First, open the door 2, place the mold 14 on the support frame 15, adjust the position of the mold, and adjust the position of the limiter 16 on the first guide rail 111 and the second guide rail 121 according to the position and model of the mold 14; then close the door 2 to keep the chassis 1 airtight.

[0039] Then, the pressing tank 4 is opened to provide resin sand into the chassis 1, and the switch button on the control cabinet 9 is started at the same time. The first motor and the second motor move the nozzle 13 under the instruction of the PLC controller, so that the nozzle 13 sandblasts the mold surface for polishing.

[0040] The polished resin sand falls into the ash hopper 7 along the gaps of the grid-shaped support frame 15 and is recovered through the recovery pipe 8, and then sent to the dust removal equipment 3 for dust removal. Finally, the cleaned resin sand is sent to the pressing tank 4 for reuse.

[0041] The utility model provides an automatic sandblasting machine for processing molds, which can grind molds of different sizes and improve the scope of application. The mold is grinded by controlling the movement of the nozzle through an automatic moving module inside the device. There is no need to manually hold the nozzle for grinding, which reduces the labor intensity of manual operation. There is no need to set a separate observation window, which ensures the sealing of the entire device and can also prevent dust from flying out and causing damage to the human body.

Claims

1. An automatic sandblasting machine for processing molds, characterized in that: The machine comprises a chassis (1), wherein the left and right sides of the front end of the chassis (1) are respectively hinged with a chassis door (2); the rear side of the chassis (1) is provided with a pressure tank (4) which is connected with a nozzle (13) inside the chassis (1) through a sand outlet pipe (10) and provides resin sand to the inside of the chassis under the action of airflow; the upper end of the inside of the chassis (1) is provided with a nozzle moving module which drives the nozzle (13) to move in four directions, front, back, left and right, and the nozzle moving module comprises a left and right moving component (11) which controls the left and right movement of the nozzle (13) and a control A forward and backward moving assembly (12) for controlling the forward and backward movement of a nozzle (13); a grid-shaped support frame (15) for placing molds (14) of different sizes is arranged inside a chassis (1) located below the nozzle; an ash hopper (7) for receiving polished resin sand is arranged below the chassis (1); the bottom of the ash hopper (7) is connected to a recovery pipe (8) for screening and recovering the polished resin sand; a control cabinet (9) is arranged on one side of the chassis (1); the output end of the control cabinet is respectively connected to the nozzle moving module and the controlled end of the nozzle.

2. The automatic sandblasting machine for processing molds according to claim 1, characterized in that: The left-right moving assembly (11) comprises a first guide rail (111) symmetrically arranged on the upper part of the front and rear side walls of the chassis (1), and a first slider (112) is slidably arranged on the first guide rail (111) for driving the front-back moving assembly (12) to move left-right; a first motor is arranged on the inner wall of the chassis (1) to drive the first slider (112) to move left-right at a uniform speed, a controlled end of the first motor is connected to an output end of the control cabinet (9), and the first motor and the first slider (112) are connected via a first transmission mechanism.

3. The automatic sandblasting machine for processing molds according to claim 2, characterized in that: Stoppers (16) are slidably provided on both sides of the first guide rail (111) to limit the left-right moving distance of the first sliding block (112).

4. The automatic sandblasting machine for processing molds according to claim 2, characterized in that: The forward and backward moving assembly (12) comprises a second guide rail (121) mounted between the end surfaces of the two first sliders (112); a second slider (122) is slidably arranged on the second guide rail (121) for driving the nozzle (13) to move forward and backward; a bracket (123) is arranged below the second slider (122); a vertical sleeve (124) for mounting the nozzle (13) is arranged on the bracket (123); a second motor for controlling the second slider (122) to move forward and backward at a uniform speed is arranged on the second slider (122); a controlled end of the second motor is connected to an output end of a control cabinet (9); and the second motor and the second slider (122) are connected via a second transmission mechanism.

5. The automatic sandblasting machine for processing molds according to claim 4, characterized in that: Limiters (16) for limiting the forward and backward movement of the spray head (13) are slidably provided on both sides of the second guide rail (121).

6. The automatic sandblasting machine for processing molds according to claim 1, characterized in that: The rear side of the chassis (1) is also provided with a dust removal device (3) for cleaning the resin sand after grinding and sending it to the pressing tank bin (4) for reuse; one end of the dust removal device (3) is connected to the recovery pipe (8) via a first connecting pipe (5), and the dust removal device (3) is connected to the pressing tank bin (4) via a second connecting pipe (6); exhaust fans are respectively provided on the first connecting pipe (5) and the second connecting pipe (6).

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