Automatic sand adding device

Abstract

The utility model relates to an automatic sand adding device which comprises a sand adding box, a sand adding spray gun and a blowing assembly, the sand adding box is provided with a material collecting cavity, the bottom of the material collecting cavity is a conical cavity, a discharging pipe is arranged at the bottom of the conical cavity, a spray gun connector is arranged on the side wall of the discharging pipe, and the feeding end of the sand adding spray gun is communicated with the spray gun connector. The blowing assembly is used for blowing solidified sand materials at the bottom of the conical cavity, an inner cavity of the sand adding box is filled with the sand materials, under the action of self weight, the sand materials are stacked in the conical cavity and the discharging pipe, the discharging pipe is connected with the sand blasting pipe and the sand adding spray gun through the spray gun connector, and the sand materials are sucked through an air source on the sand adding spray gun. And the sand is pumped to the sand adding spray gun from the position of the discharging pipe and is sprayed out from the output end of the sand adding spray gun. And as the sand materials are easy to accumulate and do not flow when being finer, compressed air is started to blow the accumulated sand materials during sand adding through the arch breaking air butterfly, so that the accumulated sand materials easily flow and fall into the discharge pipe at the bottom of the sand adding box.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sand blasting device technical field, concretely relates to an automatic sand adding device. BACKGROUND

[0002] At present, 3C product shell such as mobile phone shell, tablet computer shell and other products need to pass a sand blasting process in the manufacturing process, generally is through sand blasting device to the shell sand blasting, but the existing sand blasting process in the sand blasting process, need artificial ration and fixed time fill sand, it is very time-consuming and laborious, and each fill sand this process can influence the quality of sand blasting, in view of this, thus had the generation of the present scheme. SUMMARY

[0003] In view of the deficiency of prior art, the technical problem to be solved by the utility model is to provide an automatic sand adding device, which can automatically add sand.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of an automatic sand adding device, which comprises a sand adding box, a sand adding spray gun and a sand blowing assembly.

[0005] Further, the sand blowing assembly further comprises an arch breaking air disc, the arch breaking air disc is located on the side wall of the conical chamber, and the air inlet port of the arch breaking air disc extends out of the side wall of the conical chamber.

[0006] Further, the automatic sand adding device further comprises a material level instrument, the material level instrument is installed on the sand adding box, and the detection end of the material level instrument is obliquely inserted into the conical chamber.

[0007] Further, the automatic sand adding device further comprises an electronic platform scale, the sand adding box is placed on the detection surface of the electronic platform scale, and the electronic platform scale is used to control the sand output.

[0008] Further, the discharge pipe comprises a straight pipe and a sand adjusting pipe in communication with the bottom of the conical chamber, the upper end of the sand adjusting pipe is provided with a connecting port, the connecting port is sleeved on the outer periphery of the straight pipe, the sand adjusting pipe is provided with a spray gun connector on the side, an adjusting connector is arranged between the spray gun connector and the connecting port, the inner cavity of the adjusting connector is in communication with the inner cavity of the spray head connector, and an adjusting column is arranged at the position of the adjusting connector.

[0009] Further, the bottom of the sand adjusting pipe is provided with a through hole, and the through hole is provided with a plug.

[0010] Further, the sand box further has a vertical chamber located above the conical chamber, an opening is formed on the vertical chamber, and a viewing window is mounted in the opening.

[0011] Further, the air inlet port of the arch breaking air disc is sequentially connected with a ball valve, an inner and outer joint and an air inlet throttle valve from inside to outside.

[0012] Further, the sand box is provided with a feeding port at the upper end, and a movable cover plate is arranged at the feeding port.

[0013] Further, the movable cover plate is detachably connected with the sand box through a clamp.

[0014] Compared with the prior art, the sand box has the following beneficial effects:

[0015] 1. In the utility model, the sand is filled into the inner cavity of the sand box, and under the action of the self weight, the sand is accumulated in the conical chamber and the discharge pipe, the discharge pipe is connected with the sand blasting pipe and the sand filling spray gun through the spray gun joint, and the sand is sucked from the discharge pipe position to the sand filling spray gun through the air source on the sand filling spray gun and is sprayed from the output end of the sand filling spray gun. Moreover, when the sand is fine, it is easy to accumulate and not flow, and the device is provided with an arch breaking air disc, the accumulated sand is blown by compressed air when sand is added, so that the sand is easy to flow and falls into the discharge pipe at the bottom of the sand box.

[0016] 2. The material level instrument is arranged in the scheme, the sand capacity in the sand box is detected on line, when the sand capacity in the sand box is reduced to the limit value after the sand in the sand box is automatically added into the host multiple times, the material level instrument detects the signal and sends the signal to the PLC audible and visual alarm for reminding the maintenance personnel to manually add the sand into the sand box.

[0017] 3. The sand box is arranged on the electronic platform scale in the scheme, the sand weight in the sand box is measured, and the sand weight is controlled each time. DETAILED DESCRIPTION

[0018] Figure 1 It is a sectional view structural schematic view of the automatic sand adding device;

[0019] Figure 2 It is a sectional view structural schematic view of the discharge pipe position in the utility model;

[0020] Figure 3 It is a sectional view structural schematic view of another direction of the utility model;

[0021] Figure 4 It is a sectional view structural schematic view of the horizontal direction of the utility model.

[0022] Marked in the figure: 1, sand box; 11, vertical chamber; 12, tapered chamber; 13, discharge pipe; 14, straight pipe; 15, sand adjusting pipe; 151, connecting port; 152, adjusting interface; 153, nozzle interface; 16, plug; 17, observation window; 18, movable cover plate; 19, clamp; 2, sanding spray gun; 21, sanding pipe; 3, level gauge; 4, arch breaking air disc; 5, electronic platform scale; 6, ball valve; 7, inner and outer joint; 8, air inlet throttle valve. DETAILED DESCRIPTION

[0023] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following specific examples are described in detail below, and the drawings are as follows.

[0024] As Figures 1-4 shown, the embodiment provides an automatic sand adding device, which comprises a sand box 1, a sanding spray gun 2, a level gauge 3, an arch breaking air disc 4, an electronic platform scale 5, a material blowing assembly and an electric control system.

[0025] The sand box 1 comprises a vertical chamber 11 and a tapered chamber 12 arranged in an up-down mode, the vertical chamber 11 is provided with a notch, the notch is provided with an observation window 17, the bottom of the tapered chamber 12 is provided with a discharge pipe 13, specifically, the discharge pipe 13 comprises a straight pipe 14 and a sand adjusting pipe 15, the sand adjusting pipe 15 is provided with a connecting port 151 at the upper end, the connecting port 151 is sleeved on the outer periphery of the straight pipe 14, the sand adjusting pipe 15 is provided with a spray gun joint at the side, the spray gun joint and the connecting port 151 are provided with an adjusting interface 152 therebetween, the inner cavity of the adjusting interface 152 is communicated with the inner cavity of a nozzle interface 153, the adjusting interface 152 is provided with an adjusting column, the adjusting column adjusts the sand amount by plugging the adjusting interface 152 close to the inlet of the inner cavity of the discharge pipe 13.

[0026] Preferably, the adjusting interface 152 can be provided with a BT-TSQ type sand adjuster for adjusting the sand flow of the sanding spray gun 2.

[0027] Preferably, the bottom of the sand adjusting pipe 15 is provided with a through hole, the through hole is provided with a plug 16, when cleaning or maintaining the sand box 1, the plug 16 is pulled out, and the sand in the sand box 1 can be completely discharged.

[0028] The upper end of the sand box 1 is provided with a material inlet, the material inlet is provided with a movable cover plate 18, the movable cover plate 18 is detachably connected with the sand box 1 through a clamp 19, and the movable cover plate 18 and the sand box 1 are sealingly connected through a rubber ring.

[0029] The feeding end of the sand adding spray gun 2 is communicated with the spray gun joint, the sand adding spray gun 2 is connected with the spray gun joint through the sand blasting pipe 21, specifically, the sand adding spray gun 2 adopts a BT-B type general pressure suction type sand blasting gun, sand in the sand adding box 1 is sucked and sprayed into the main machine by using the siphon effect of compressed air, the gun body is made of aluminum alloy material, the nozzle material is boron carbide, the inner diameter is 8mm, the sand blasting rubber pipe adopts a special wear-resistant rubber pipe with an inner diameter of 16mm and an outer diameter of 25mm. The sand adding gun pressure is adjusted by a pressure regulating valve and a pressure gauge is arranged to display the pressure. 8mm, the sand blasting rubber pipe adopts a special wear-resistant rubber pipe with an inner diameter 16 mm and an outer diameter of 25mm. The sand adding gun pressure is adjusted by a pressure regulating valve and a pressure gauge is arranged to display the pressure. The blowing material assembly is used for blowing the solidified sand material at the bottom of the conical chamber 12, specifically, the blowing material assembly further comprises an arch breaking air disc 4, the arch breaking air disc 4 is located on the side wall of the conical chamber 12, and the air inlet port of the arch breaking air disc 4 extends out of the side wall of the conical chamber 12. The air inlet port of the arch breaking air disc 4 is sequentially connected with a ball valve 6, an inner and outer joint 7 and an air inlet throttle valve 8 from inside to outside.

[0030] The material level instrument 3 is installed on the sand adding box 1, the detection end of the material level instrument 3 is obliquely inserted into the conical chamber 12, and the sand material capacity in the sand adding box 1 is detected online. When the sand material in the sand adding box 1 is automatically added into the main machine for multiple times and the capacity is reduced to reach the limit value, the material level instrument 3 detects the signal and sends it to the PLC audible and visual alarm for reminding the maintenance personnel to manually add sand material into the sand adding box 1.

[0031] The sand adding box 1 is placed on the detection surface of the electronic platform scale 5, and the electronic platform scale 5 is used for controlling the sand output. The electronic platform scale 5 in the embodiment has a display screen, is used for measuring the weight of the sand material in the sand adding box 1, and controls the sand adding weight each time.

[0032] The electric control system is composed of an electric power system and a power supply, the electric system is composed of electromagnetic valves, touch screens, PLCs, wires and corresponding pipelines and control elements, the power supply is set as a three-phase five-wire system (380V, 50HZ), and a leakage protection switch is arranged at the same time. The above structures are all existing structures, and will not be described here.

[0033]

[0034] ​Working principle: using sand gun 2 (sand adding air source pressure manual adjustment) to suck sand in sand box 1 to the main cabin, the sand weight (unit: kg) and interval time (unit: min) are set on the touch screen according to the user's process requirements. The sand weight is measured by the electronic scale. There is a material level instrument 3 in the sand box 1, which is used to remind the technician to manually add sand to the sand box 1 when the sand in the sand box 1 is insufficient. There is an arch breaking air butterfly in the sand box 1, which is used to blow the sand in the sand box 1 to prevent the sand from caking and not flowing when the sand is added automatically. When the sand box 1 is working, the sand flowing out of the sand box 1 from the bottom discharge pipe 13 is sprayed into the main cabin through the sand blasting pipe 21 under the negative pressure suction of the sand blasting gun 2, the weight of the sand in the sand box 1 will decrease, and the weight of the sand in the sand box 1 will decrease. The amount of sand sprayed into the main cabin by the sand blasting gun 2 is measured by the electronic scale and monitored on the touch screen. The device works with the sand blasting host, and the sand adding interval time starts to count after the sand blasting gun is turned on, and the sand adding electromagnetic and sand weight are displayed on the touch screen in real time when the set value is reached.

[0035] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above examples. The above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic sand addition device characterized by: The application relates to a sand adding box, a sand adding spray gun and a sand blowing assembly, wherein the sand adding box is provided with a material collecting cavity, the bottom of the material collecting cavity is a conical cavity, the bottom of the conical cavity is provided with a discharging pipe, the side wall of the discharging pipe is provided with a spray gun joint, the feeding end of the sand adding spray gun is communicated with the spray gun joint, and the sand blowing assembly is used for blowing the solidified sand at the bottom of the conical cavity.

2. An automatic sand addition device as claimed in claim 1, characterized in that: The sand blowing assembly further comprises an arch breaking air disc, the arch breaking air disc is arranged on the side wall of the conical cavity, and the air inlet port of the arch breaking air disc extends out of the side wall of the conical cavity.

3. An automatic sand addition device as claimed in claim 1, characterized in that: The automatic sand adding device further comprises a material level meter, the material level meter is installed on the sand adding box, and the detection end of the material level meter is obliquely inserted into the conical cavity.

4. An automatic sand addition device as claimed in claim 1, characterized in that: The automatic sand adding device further comprises an electronic platform scale, the sand adding box is placed on the detection surface of the electronic platform scale, and the electronic platform scale is used for controlling the sand discharging amount.

5. An automatic sand addition device as claimed in claim 1, wherein: The discharging pipe comprises a straight pipe communicated with the bottom of the conical cavity and a sand adjusting pipe, the upper end of the sand adjusting pipe is provided with a connecting port, the connecting port is sleeved on the outer periphery of the straight pipe, the side of the sand adjusting pipe is provided with a spray gun joint, an adjusting interface is arranged between the spray gun joint and the connecting port, the inner cavity of the adjusting interface is communicated with the inner cavity of the spray head interface, and an adjusting column is arranged at the position of the adjusting interface.

6. An automatic sand addition device as claimed in claim 5, characterized in that: The bottom of the sand adjusting pipe is provided with a through hole, and the through hole is provided with a plug.

7. An automatic sand addition device as defined in claim 1, wherein: The sand adding box is further provided with a vertical cavity, the vertical cavity is arranged above the conical cavity, a gap is formed in the upper portion of the vertical cavity, and an observation window is arranged in the gap.

8. An automatic sand addition device as defined in claim 2, wherein: The air inlet port of the arch breaking air disc is sequentially connected with a ball valve, an inner and outer joint and an air inlet throttle valve from inside to outside.

9. An automatic sand addition device as defined in claim 1, wherein: The upper end of the sand adding box is provided with a feeding port, and the feeding port is provided with a movable cover plate.

10. An automatic sand addition device as claimed in claim 9, characterized in that: The movable cover plate is detachably connected with the sand adding box through clamps.

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