Shot blasting machine

Abstract

The utility model discloses a shot blasting machine, and belongs to the technical field of casting machining equipment. Comprising a box body, a box door, a box door electric control opening and closing assembly, a dust collection box and a laser particle dust counter, a lower bottom opening structure is arranged below the box body; a dust collection box is arranged at the bottom of the box; the shots in the box body fall into the dust collection box after settling; a box door is arranged on the open structure of the front of the box body; a box door electric control opening and closing assembly is arranged between the box door and the box body; the box door electric control opening and closing assembly is used for controlling opening or closing of the box door. A laser particle dust counter is arranged in the box body and is used for monitoring the density of bullets floating in the box body; the laser particle dust counter is in communication connection with the PLC; an output port of the PLC is in communication connection with the box door electric control opening and closing assembly. When it is judged that the projectiles settle completely enough through monitoring data, the box door is opened at the moment, and the situation that a large number of projectiles floating in the box body are brought out of the box body by air flow at the moment that the box door is opened, and consequently the projectiles cannot be recycled can be avoided to a great extent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to foundry equipment technical field, concretely relates to a shot blasting machine. BACKGROUND

[0002] The shot blasting machine is a kind of equipment using high-speed projectile thrown by shot blasting machine to clean and strengthen workpiece surface;It is mainly used to remove the oxide layer, rust, dirt and other impurities on the surface of workpiece;It can also be used for sand dropping, core removal and other treatments;The shot blasting machine accelerates the projectile to high speed, and uses centrifugal force to throw it out, forming a fan-shaped flow beam to impact the surface of workpiece;At the same time, the high-speed projectile can remove burrs, rust, dirt and other impurities on the surface of workpiece;The used projectile and impurities cleaned from the surface of workpiece will enter the dust collector together;After filtration and separation in the next process, the projectile is separated from the impurities, and the projectile can be recycled for reuse.

[0003] The particle size of the projectile is usually between 0.2 and 0.3 mm, which belongs to fine particles;After the casting treatment is completed and the shot blasting machine is powered off, the projectiles in the shot blasting machine box are small in size and light in weight, and are still in a floating state;It needs a certain time to settle;If the box door is opened immediately after the shot blasting machine is powered off, the opening of the box door will accelerate the flow of gas in the box body, and the projectiles that have not settled and are in a floating state will be taken out of the box body, and finally settled outside the box body, which cannot be recycled;The projectiles falling outside the box body will affect the working environment and may be inhaled by the operator;In addition, the projectiles outside the box body are not convenient to recycle, causing waste of raw materials. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of shot blasting machine, laser particle dust counter is arranged in shot blasting machine, it can be used to monitor the projectile density of floating in the shot blasting machine box;After the shot blasting machine is powered off, the projectile density in the box is monitored using laser particle dust counter, and its density decreases as the projectile settles;When the projectile settlement is judged to be complete enough by monitoring data, the box door is opened at this time, which can greatly avoid that a large number of projectiles floating in the box body are taken out of the box body by air flow at the moment of opening the box door, resulting in that this part of projectile cannot be recycled.

[0005] In order to achieve the above technical purpose, the utility model is realized by the following technical scheme:

[0006] A kind of shot blasting machine, comprising: box body, box door, box door electric control opening and closing component, dust collector, laser particle dust counter;

[0007] The dust collector is arranged at the lower bottom of the box body;The projectiles in the box body fall into the dust collector after settling;

[0008] The box door is arranged on the open structure of the front of the box body;

[0009] A box door electric control opening and closing assembly is arranged between the box door and the box body, and is used for controlling opening or closing of the box door.

[0010] A laser particle dust counter is arranged in the box body, and is used for monitoring density of the projectiles floating in the box body.

[0011] The laser particle dust counter is communicatively connected to the PLC, and an output port of the PLC is communicatively connected to the box door electric control opening and closing assembly.

[0012] Preferably, the box door electric control opening and closing assembly comprises a hydraulic telescopic rod and a hydraulic control assembly.

[0013] The hydraulic telescopic rod is arranged transversely and parallel to the box door, and the telescopic end of the hydraulic telescopic rod is hingedly arranged on the surface of the box door through a hinged seat, and the base end of the hydraulic telescopic rod is hingedly connected to the side surface of the box body through a hinged plate.

[0014] The hydraulic control assembly is used for controlling extension or retraction of the hydraulic telescopic rod, and the hydraulic control assembly is communicatively connected to the PLC.

[0015] Preferably, laser particle dust counters are arranged on the remaining three side surfaces of the box body in addition to one side surface on which the box door is arranged.

[0016] Preferably, two box doors are symmetrically arranged.

[0017] Soft rubber pads are arranged on the opposite edges of the two box doors.

[0018] After the two box doors are closed, the soft rubber pads on the opposite edges are pressed against each other, so as to fill and seal the opposite edges of the box door, and avoid possible gaps through which the projectiles and particles run out of the box body.

[0019] Preferably, a notch groove is arranged in the middle of the upper top surface of the box body.

[0020] Covering brushes are arranged on the inner walls of the two sides of the notch groove.

[0021] Preferably, the upper end and the lower end of the dust collecting box are both arranged as open structures.

[0022] The inner diameter of the opening gradually decreases from the upper end to the lower end.

[0023] Preferably, a filter screen plate drawing groove is arranged on one side wall of the dust collecting box close to the upper end opening of the dust collecting box.

[0024] The filter screen plate is inserted into the dust collecting box from the filter screen plate drawing groove.

[0025] The pellets can pass through the filter screen plate; and the large-particle impurities falling from the casting can be retained on the filter screen plate.

[0026] Preferably, a negative pressure suction machine is arranged on the sidewall of the dust collecting box.

[0027] The air suction port of the negative pressure suction machine is communicated with the dust collecting box.

[0028] Preferably, the sidewall of the dust collecting box comprises a metal inner layer and an insulating outer layer.

[0029] The metal inner layer serves as the inner wall of the dust collecting box; and the insulating outer layer is arranged on the metal inner layer.

[0030] The insulating outer layer serves as the outer wall of the dust collecting box.

[0031] The metal inner layer is connected to the electrostatic generator through a wire.

[0032] The utility model discloses a beneficial effect is:

[0033] The utility model discloses a kind of shot blasting machine, laser particle dust counter is arranged in box body interior, when shot blasting machine is powered off, laser particle dust counter monitors the pellet density that floats in box body in real time;With pellet settlement, when the pellet density monitored drops to low value, PLC controls box door to open again;It can avoid that there is still pellet of greater density in box body, under the air flow effect of box door opening, pellet will be taken out of box body, fall in box body outside;Pollute work environment, in addition, pellet raw material waste can also be caused.

[0034] Soft rubber pad strip is arranged on the opposite side of box door, when box door is closed, the soft rubber pad strip of opposite side is extruded after each other, the gap of opposite side of box door can be filled, to avoid pellet from gap floating out of box body.

[0035] Dust collecting box is arranged below box body, negative pressure suction machine is arranged on the sidewall of dust collecting box, by carrying out negative pressure suction to dust collecting box and the space inside box body, the speed of pellet settlement can be accelerated;

[0036] The sidewall of dust collecting box comprises insulating outer layer of outer layer and metal inner layer of inner wall;Metal inner layer is connected with electrostatic generator;By making metal inner layer produce static electricity, electrostatic adsorption effect can be generated to pellet falling into dust collecting box;Make it settle stably, avoid floating again.

[0037] A filter screen plate can be inserted into dust collecting box from the sidewall of dust collecting box, by using filter screen plate, pellet can pass through filter screen plate, and large-particle impurities falling from casting can be intercepted by filter screen plate;By carrying out primary filtration to used pellet, impurity and pellet can be separated conveniently in later period. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings described in the following are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can also be obtained based on these drawings without any creative labor.

[0039] Figure 1 is the overall structure schematic diagram of the present application;

[0040] Figure 2 is the box body of the present application in the open state of the box door schematic diagram; and the installation position schematic diagram of the laser particle dust counter;

[0041] Figure 3 is the dust collecting box structure schematic diagram of the present application;

[0042] Figure 4 is the dust collecting box plane structure schematic diagram of the present application;

[0043] Figure 5 is the dust collecting box upper filter screen plate pull-out slot opening structure schematic diagram of the present application;

[0044] Figure 6 is the filter screen plate structure schematic diagram of the present application;

[0045] Figure 7 is the dust collecting box insulation outer layer and metal inner layer structure schematic diagram of the present application.

[0046] In the drawings, the structure name represented by each mark is:

[0047] 1-box body, 101-gap slot, 102-covering brush, 103-lower bottom opening, 2-box door, 201-soft rubber pad strip, 3-hydraulic telescopic rod, 301-hinged plate, 4-dust collecting box, 401-filter screen plate pull-out slot, 402-recovery port, 403-insulation outer layer, 404-metal inner layer, 5-negative pressure suction machine, 6-laser particle dust counter, 7-filter screen plate, 8-static generator. DETAILED DESCRIPTION

[0048] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without any creative labor are within the protection scope of the present application.

[0049] Embodiment 1

[0050] A shot blasting machine, comprising: a box body 1, a box door 2, a box door electric control opening and closing assembly, a dust collecting box 4, a laser particle dust counter 6;

[0051] The box body 1 of the shot blasting machine is internally provided with a shot blasting assembly, which is used to accelerate the pellets and throw the pellets in a specific direction by centrifugal force, so that the pellets are thrown on the surface of the casting; the burrs, rust and other impurities on the surface of the casting are polished away by the contact between the pellets and the casting; since the present embodiment does not involve improvement of the shot blasting assembly of the shot blasting machine, the existing shot blasting assembly in the shot blasting machine is still used, and therefore the detailed structure of the shot blasting assembly is not described here.

[0052] Generally, a feeding track is arranged above the box body 1 of the shot blasting machine, and the casting to be processed is placed on the suspension mechanism, which moves on the track to feed the casting to be processed into the box body 1 of the shot blasting machine.

[0053] As shown in Figure 1 A notch groove 101 is arranged in the middle of the upper top surface of the box body 1, and the notch groove 101 is arranged to allow the suspension device to pass through the upper top surface of the box body 1, so as to feed the casting to be processed into the box body 1; the front surface of the box body 1 is arranged as an open structure, the casting to be processed is fed into the box body 1 from the front surface of the box body 1, and the processed casting is also removed from the box body 1 from the front surface of the box body 1. The box door 2 is arranged on the open structure of the front surface of the box body 1, and the box door 2 is symmetrically arranged as two doors; one side of each of the two doors is arranged on the box body 1 by a hinged hinge; generally, for safety, the box door 2 of the shot blasting machine cannot be directly opened and closed by hand, and a box door electric control opening and closing assembly is arranged to control the opening and closing of the box door 2.

[0054] The box door electric control opening and closing assembly in the present embodiment comprises: a hydraulic telescopic rod 3 and a hydraulic control assembly.

[0055] Each of the box doors 2 is correspondingly provided with a set of hydraulic telescopic rods 3; the hydraulic telescopic rods 3 are arranged transversely and parallel to the box doors 2; the telescopic end portions of the hydraulic telescopic rods 3 are hingedly arranged on the surface of the box door 2 by a hinged seat; the base end portions of the hydraulic telescopic rods 3 are hingedly connected to the side surface of the box body 1 by a hinged plate 301; the opening and closing of the box door 2 can be realized by the retraction and extension of the hydraulic telescopic rod 3.

[0056] The hydraulic control assembly is used to control the extension or retraction of the hydraulic telescopic rod 3; the hydraulic telescopic rod 3 and the hydraulic control assembly both belong to existing products, and the present embodiment can directly use the existing hydraulic telescopic rod 3; the structure thereof is not described here.

[0057] The pellets are thrown out of the box body 1 of the shot blasting machine to polish the surface of the casting; the pellets and the impurities falling from the casting are collected together, and then the impurities and the pellets are separated in the next process; the pellets can be recycled.Figure 2 As shown, the bottom of the box 1 is designed with an open bottom opening 103; a dust collection box 4 is installed below the box 1, and the mixture of projectiles and impurities that settle in the box 1 can be directly collected in the dust collection box 4; the dust collection box 4 has a structure with a rectangular box at the top and a rectangular box at the bottom, the area of ​​the upper rectangular box is the same as the bottom surface of the box, and the inner diameter of the lower rectangular box is smaller than that of the upper rectangular box; the two rectangular boxes are connected by a conical transition box; both the top and bottom ends of the dust collection box 4 are designed with open structures, and the lower opening serves as a collection port 402.

[0058] The shot has a particle size between 0.2mm and 0.3mm. After the casting is completed, the shot blasting machine is powered off. Due to its small size and light weight, the shot inside cannot settle completely immediately. The particle density of the shot inside the chamber 1 is still relatively high. If the chamber door 2 is opened immediately, the air flow inside the chamber 1 will accelerate at the moment the door 2 is opened, which will carry the shot that is still floating out of the chamber 1. Eventually, these shot that are carried out will settle outside the chamber 1. The shot that settles outside the chamber 1 will pollute the working environment and may be inhaled by the operators. In addition, the shot that settles outside the chamber 1 cannot be collected and further separated, so it cannot be reused, resulting in a waste of raw materials.

[0059] Therefore, as Figure 2 As shown, in this embodiment, a laser particle dust counter 6 is installed inside the housing 1 to monitor the density of projectiles inside the housing 1 in real time. As a preferred embodiment, a set of laser particle dust counters 6 is installed on each of the three sides of the housing 1, except for the front side. The average value of the three sets of monitoring is used as the input value to more accurately and comprehensively reflect the density of floating projectiles inside the housing 1. The laser particle dust counter 6 is connected to a PLC. The minimum threshold of the floating projectile density is input through the input terminal of the PLC system. When the density of projectiles inside the housing 1 drops to the threshold, the housing door 2 is opened, which can greatly reduce the number of projectiles floating out of the housing 1.

[0060] Therefore, the hydraulic control component controlling the hydraulic telescopic rod 3 is also communicatively connected to the PLC. When the laser particle dust counter 6 detects that the shot density inside the housing 1 has dropped to the set low threshold, the PLC sends a control command to the hydraulic control component, which then drives the hydraulic telescopic rod 3 to open the housing door 2. By accurately monitoring the shot density inside the housing 1 to determine the timing of opening the housing door 2, the number of shot particles carried out due to the opening of the housing door 2 can be minimized.

[0061] After the box door 2 is closed, gaps may exist on the opposite sides of the two box doors 2; during the operation of the shot blasting machine, very small shot particles may flow out of the box body 1 through the gaps; as a preferred embodiment, such as Figure 2As shown, the soft rubber gasket 201 is arranged on the opposite edges of the two box doors 2.

[0062] When the two box doors 2 are closed, the soft rubber gaskets 201 on the opposite edges are pressed against each other, which fills and seals the opposite edges of the box door 2, avoiding the gap that may exist at the edges, and preventing the pellets from escaping from the gap.

[0063] In addition, the pellets can also flow out of the box 1 from the notch groove 101 formed on the upper side of the box 1. As a preferred embodiment, as shown in the figure, Figure 2 As shown, the covering brush 102 is arranged on the inner walls of the two sides of the notch groove 101. The bristles of the covering brush 102 should be thin, and the thickness and density of the bristles should be large. The covering brush 102 does not affect the suspension device passing through the upper top surface of the box 1 when feeding, and the covering brush 102 can also block most of the pellets from flowing out of the box 1 from the notch groove 101.

[0064] Example 2

[0065] Based on the basis of Example 1, after the shot blasting machine is processed, the collected pellets are mixed with impurities falling from the castings. The impurities and the pellets need to be separated in the later stage. The pellets can be used again. Among them, there are impurities mixed with large particle sizes.

[0066] As shown in the figure, Figure 5 As shown in the figure, the filter screen plate pulling groove 401 is arranged on one side wall of the dust collecting box 4 near the upper end opening of the dust collecting box 4. The filter screen plate 7 is inserted into the dust collecting box 4 from the filter screen plate pulling groove 401. The mixture of pellets and impurities settled in the dust collecting box 4 can first pass through the filter screen plate 7. Large particle impurities falling from the castings can be retained on the filter screen plate 7, and the pellets and small particle impurities can pass through the filter screen plate 7 for later fine screening.

[0067] Example 3

[0068] Based on the basis of Example 1, in Example 1, the box door 2 can be opened only after the density of the pellets floating in the box 1 reaches a relatively low value. However, the pellets are relatively light in weight, and the overall settling speed is relatively slow. This may reduce the processing efficiency.

[0069] As shown in the figure, Figure 4 As shown in the figure, the negative pressure suction machine 5 is arranged on the side wall of the dust collecting box 4. The air suction port of the negative pressure suction machine 5 communicates with the dust collecting box 4. In order to improve the negative pressure suction efficiency, a group of negative pressure suction machines 5 can be arranged on the left and right sides of the dust collecting box 4.

[0070] Using the negative pressure suction machine 5, a negative pressure suction effect can be created inside the dust collection box 4 and the box body 1; this can accelerate the settling of the projectiles floating in the box body 1 into the dust collection box 4, and shorten the waiting time for the box door 2 to open.

[0071] Example 4

[0072] Based on Example 1, in Example 1, the projectiles are uniformly collected in the dust collection box 4; however, the projectiles located on the upper layer are actually unstable in their settling and may float at any time; especially when the box door 2 is opened, the air flow inside the box 1 will affect the dust collection box 4, and at this time the projectiles on the upper layer may still float back into the box 1.

[0073] like Figure 7 As shown, in this embodiment, the sidewall of the dust collection box 4 includes: a metal inner layer 404 and an insulating outer layer 403;

[0074] The inner metal layer 404 serves as the inner wall of the dust collection box 4; an insulating outer layer 403 is attached to the inner metal layer 404; the insulating outer layer 403 serves as the outer wall of the dust collection box 4; the inner metal layer 404 is connected to the electrostatic generator 8 via wires. During the pellet settling process, the electrostatic generator 8 causes the inner metal layer 404 to carry static electricity, which can electrostatically attract the settling pellets; under electrostatic attraction, the pellet settling is stabilized, especially preventing the upper pellets from floating again after being disturbed.

[0075] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shot blasting machine, characterized in that, include: Box body, box door, box door electronic opening and closing assembly, dust collection box, laser particle dust counter; A dust collection box is installed at the bottom of the box body; The projectiles inside the chamber settle and fall into the dust collection box; A door is provided on the open structure on the front of the box; An electrically controlled door opening and closing assembly is provided between the door and the box body; the electrically controlled door opening and closing assembly is used to control the opening or closing of the door; A laser particle dust counter is installed inside the box to monitor the density of projectiles floating inside the box; The laser particle dust counter is communicatively connected to the PLC; the output port of the PLC is communicatively connected to the door electronic control opening and closing assembly.

2. The shot blasting machine according to claim 1, characterized in that, The electrically controlled opening and closing assembly for the cabinet door includes: a hydraulic telescopic rod and a hydraulic control assembly; The hydraulic telescopic rod is arranged laterally parallel to the box door; the telescopic end of the hydraulic telescopic rod is hinged to the surface of the box door via a hinge seat; the base end of the hydraulic telescopic rod is hinged to the side of the box body via a hinge plate. The hydraulic control component is used to control the extension or retraction of the hydraulic telescopic rod; the hydraulic control component is communicatively connected to the PLC.

3. The shot blasting machine according to claim 1, characterized in that, In addition to the side with the door, the other three sides of the enclosure are equipped with laser particle dust counters.

4. The shot blasting machine according to claim 1, characterized in that, The box has two doors arranged symmetrically. Soft rubber pads are provided on opposite sides of both of the cabinet doors.

5. The shot blasting machine according to claim 1, characterized in that, A notch or groove is provided in the center of the top surface of the box; Covering brushes are provided on both sides of the inner wall of the notch.

6. The shot blasting machine according to claim 1, characterized in that, Both the top and bottom ends of the dust collection box are designed with open structures; The inner diameter of the opening gradually decreases from the top opening until it opens at the bottom.

7. A shot blasting machine according to claim 6, characterized in that, A filter screen pull-out groove is provided near the upper opening of the dust collection box and on one side wall of the dust collection box. Insert the filter screen plate into the dust collection box through the filter screen plate pull-out slot.

8. The shot blasting machine according to claim 1, characterized in that, A negative pressure suction machine is installed on the side wall of the dust collection box; The suction port of the negative pressure suction machine is connected to the dust collection box.

9. A shot blasting machine according to claim 1, characterized in that, The sidewall of the dust collection box includes: a metal inner layer and an insulating outer layer; The inner metal layer serves as the inner wall of the dust collection box; an insulating outer layer is attached to the inner metal layer. The insulating outer layer serves as the outer wall of the dust collection box; The inner metal layer is connected to the electrostatic generator via a wire.

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