Device and method for cleaning interior of semi-closed casting

Abstract

The invention relates to a device and a method for cleaning the interior of a semi-closed casting, belongs to the technical field of casting, and solves the problem that a graphite mold in the semi-closed casting is difficult to clean in the prior art. The device comprises an air pick and a dust collection device, the air pick comprises a first cutter, a driving structure and a pick drill rod; the first cutter does reciprocating rectilinear motion and rotary motion under the driving structure to crush a graphite mold in a casting; the pickaxe drill rod is used for connecting the first cutter and the driving structure; and the dust collecting device is used for collecting dust in the working process of the air pick. The cleaning efficiency of the graphite mold in the semi-closed casting can be high.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a device and method for cleaning the interior of a semi-enclosed casting. Background Art

[0002] Titanium alloy castings are widely used in aviation, aerospace, shipbuilding and other fields due to their good room temperature and high temperature strength, thermal stability and welding performance. For titanium alloy castings with certain semi-enclosed complex inner cavity structures or small-sized flow channel structures, the main casting processes used are machined graphite mold casting and investment casting. After casting, the internal graphite mold needs to be cleaned. Since both the graphite and the melt mold shell have certain strength, cleaning is relatively difficult. Summary of the invention

[0003] In view of the above analysis, the embodiments of the present invention are intended to provide a device and method for cleaning the interior of a semi-enclosed casting, so as to solve the problem that it is difficult to clean the graphite mold inside the semi-enclosed casting.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] In one aspect, the present invention provides a semi-enclosed casting internal cleaning device, including a pneumatic pick and a dust collecting device;

[0006] The pneumatic pick comprises a first tool, a driving structure and a pick;

[0007] The first cutter performs reciprocating linear motion and rotational motion under the driving structure to break the graphite mold inside the casting;

[0008] The pickaxe is used to connect the first tool and the driving structure;

[0009] The dust collecting device is used for collecting dust generated during the operation of the pneumatic pick.

[0010] Furthermore, the first tool is a spiral blade structure.

[0011] Furthermore, the pneumatic pick also includes a spring, which is arranged on the upper part of the first tool and is used to adjust the extension length and angle of the first tool.

[0012] Furthermore, the dust collecting device is arranged on the pickaxe; the dust collecting device includes a baffle cover, a dust collector, a dust collecting pipe and a dust collecting hopper.

[0013] Furthermore, the baffle cover is configured as an umbrella-shaped structure.

[0014] Furthermore, the dust suction pipe connects the vacuum cleaner and the dust collecting hopper.

[0015] Furthermore, a venturi tube and a conical disk are arranged inside the dust suction pipe.

[0016] Furthermore, the conical disk is arranged at the lower center of the contraction section of the venturi tube through a fixing frame.

[0017] Furthermore, microholes are provided on the blade of the first tool for heat dissipation.

[0018] Another aspect of the present invention provides a method for cleaning the interior of a semi-enclosed casting, which is used in the device for cleaning the interior of a semi-enclosed casting.

[0019] Furthermore, the pneumatic pick is also provided with a second tool; the second tool is a disc structure, and the second tool includes a bottom, a center part, a cutting part and an edge part;

[0020] Further, the cutting portion is arranged between the central portion and the edge portion, and the cutting portion is evenly arranged along the circumferential direction of the axis of the second tool; and the length direction of the cutting portion is the radial direction of the second tool.

[0021] Furthermore, the cutting portion is a sawtooth structure.

[0022] Furthermore, the cutting portion comprises a coarse crushing zone and a fine crushing zone; the saw teeth of the coarse crushing zone are larger than the saw teeth of the fine crushing zone, and the saw teeth spacing of the coarse crushing zone is larger than the saw teeth spacing of the fine crushing zone.

[0023] Furthermore, the plane between the saw teeth is parallel to the bottom upper surface of the second tool; the angle between one side of the saw teeth and the bottom upper surface is A, and the angle between the other side of the saw teeth and the bottom upper surface is B, then: 135°<A<145°, 60°<B<75°.

[0024] Furthermore, the second tool comprises a cutting portion angle adjustment structure, and the cutting portion angle adjustment structure is used to adjust the inclination angle of the cutting portion.

[0025] Furthermore, the cutting part angle adjustment structure includes an adjustment plate and an adjustment slot; the adjustment plate is arranged at both ends of the cutting part; one end of the adjustment plate is fixed to the cutting part, and the other end of the adjustment plate is connected to the center part or the edge part; the adjustment slot is arranged at the center part and the edge part.

[0026] Furthermore, the adjustment plate is provided with a through hole, the through hole corresponds to the adjustment groove, and bolts can be inserted into the adjustment groove and the through hole to fix the inclination angle of the cutting portion.

[0027] Furthermore, the pneumatic pick also includes a third tool; the third tool is arranged at the mouth of the vacuum cleaner and is used to break the graphite blocks sucked into the mouth of the vacuum cleaner.

[0028] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0029] (1) The casting cleaning device of the present invention uses a pneumatic pick, which has reciprocating and rotating motion functions, ensuring that the pick head continuously destroys the closed position casting and brings part of the casting out of the closed position with the movement of the pick head, avoiding the cleaning device from being overloaded due to blockage of the broken casting. The dust collection device is arranged on the pick of the pneumatic pick, which is used to absorb dust when the pneumatic pick is working, reducing the risk of workers inhaling dust.

[0030] (2) Compared with the prior art, the impact head of the pneumatic pick in the present invention is configured with a spiral blade structure. By utilizing the characteristics of the spiral, the spiral blade can gradually draw in and crush the graphite mold during rotation, while generating a certain axial thrust, thereby promoting the smooth discharge of graphite and avoiding accumulation in the crushing area.

[0031] (3) The present invention is provided with a spring on the upper part of the first tool. On the one hand, the spring can automatically adjust the extension length and angle of the first tool, ensuring that the first tool always maintains good contact with the graphite mold, ensuring that the impact force can be effectively transmitted to the graphite, and improving the crushing efficiency and the working flexibility of the pneumatic pick; on the other hand, since the pneumatic pick will generate high-frequency impact action when working, the spring can effectively buffer the impact force of the pneumatic pick, reducing the vibration of the overall structure of the pneumatic pick and the operator's arm.

[0032] (4) The baffle cover of the present invention is configured as an umbrella-shaped structure, which can effectively cover the area where dust is generated when the pneumatic pick is working, intercept dust in multiple directions, and reduce the escape of dust into the surrounding space; the blade part is provided with micropores, and the micropores form an air flow channel during the graphite crushing process; when the tool is rotating at a high speed, the flow of air through the micropores plays a role in cooling the tool and blowing away the graphite dust, reducing the adhesion of graphite dust on the tool surface, and improving the heat dissipation performance and working stability of the tool.

[0033] (5) Compared with the prior art, the present invention sets a combined structure of a venturi tube and a conical disk in the dust suction pipe, and uses the venturi effect to increase the flow rate of dust and accelerate the speed of dust entering the dust collecting hopper; the venturi tube and the conical disk form a low-pressure area, which makes the dust sucked in faster and improves the dust capture efficiency.

[0034] (6) Compared with the prior art, the present invention is provided with a second tool on the upper part of the first tool to assist the first tool in cutting the graphite mold. In view of the slippery property of graphite, the second tool in the present invention is configured to be serrated to prevent the graphite from sliding on the blade surface, thereby improving the cutting accuracy of the graphite mold.

[0035] (7) Compared with the prior art, the present invention sets the sawtooth shape of the cutting part of the second tool near the edge larger than the sawtooth near the center, and the sawtooth spacing near the edge is larger than the sawtooth spacing near the center, so that the sawtooth near the edge can be used to coarsely crush the graphite, and the sawtooth near the center can be used to finely crush the graphite block, thereby improving the efficiency of the entire crushing process; in view of the soft characteristics of the graphite mold, the tooth structure and the horizontal inclination angle are set to A on one side and B on the other side, 135°<A<145° to ensure that the sawtooth has sufficient strength to withstand the force in the process of cutting graphite, and at the same time it is conducive to the smooth discharge of the crushed graphite chips; 60°<B<75°, so that the sawtooth can initially be inserted into the large block of graphite and avoid slipping due to too sharp an angle. The sawtooth can better cut into the edge of the graphite and generate a suitable crushing force inside the graphite.

[0036] (8) The present invention is provided with a cutting portion angle adjustment structure, including an adjustment slot and an adjustment plate, through which bolts are inserted into the through hole of the adjustment plate and the adjustment slot to change the inclination angle of the cutting portion in real time. A smaller cutting portion inclination angle is used in the initial graphite crushing stage to quickly cut into the graphite; after the graphite is initially crushed, the cutting portion inclination angle is increased to enhance the tearing and crushing effect.

[0037] (9) Compared with the prior art, the present invention is provided with a third tool at the vacuum cleaner outlet. The third tool is driven by the power of a pneumatic pick to rotate, thereby breaking the graphite blocks splashed and sucked to the vacuum cleaner outlet into smaller graphite blocks, thereby avoiding clogging of the dust collecting device.

[0038] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0040] Figure 1 It is a structural schematic diagram of the cleaning device of Example 1;

[0041] Figure 2 It is a structural schematic diagram of the cleaning device of Example 2;

[0042] Figure 3 is a schematic structural diagram of a second tool in Example 2;

[0043] Figure 4 This is a schematic structural diagram of the second tool sawtooth of Example 2;

[0044] Figure 5 This is a schematic diagram of the structure inside the dust collection tube of Example 2;

[0045] Figure 6 It is a structural schematic diagram of the cleaning device of Example 3;

[0046] Figure 7 This is a schematic structural diagram of the installation of the third cutting tool of Example 3;

[0047] Figure 8 This is a schematic structural diagram of the third tool of Example 3.

[0048] Reference numerals:

[0049] 1-pneumatic pick, 11-first tool, 12-spring, 13-driving structure, 14-pick, 15-second tool, 151-center part, 152-edge part, 153-cutting part, 154-bottom, 155-cutting part angle adjustment structure, 1551-adjusting plate, 1552-adjusting slot, 16-third tool, 161-limiting column, 162-transmission ring, 163-connecting column, 164-blade, 165-transmission gear, 166-transmission rod, 2-dust collecting device, 21-blocking cover, 22-vacuum cleaner, 23-dust suction pipe, 231-Venturi tube, 232-conical disk, 24-dust collecting hopper. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0051] Example 1

[0052] A specific embodiment of the present invention, as Figure 1 As shown, a semi-enclosed casting internal cleaning device is disclosed, which is used to clean the graphite mold inside the semi-enclosed titanium alloy casting after the casting is completed, and includes a pneumatic pick 1 and a dust collecting device 2.

[0053] The pneumatic pick 1 includes a first tool 11, a driving structure 13 and a pick 14. The driving structure 13 of the pneumatic pick 1 is connected to a power source and compressed air to provide power for cleaning work. The pneumatic pick 1 has reciprocating and rotating motion functions, ensuring that the pick head continuously destroys the closed position mold and brings part of the mold out of the closed position with the movement of the pick head, avoiding the load work of the cleaning device caused by the blockage of the broken mold.

[0054] The pick 14 is used to connect the driving structure 13 and the first tool 11 .

[0055] The first tool 11 is the impact head of the pneumatic pick 1, which performs reciprocating linear motion and rotational motion under the driving structure 13 of the pneumatic pick 1 to break the graphite mold inside the casting. In this embodiment, the first tool 11 is a spiral blade structure with sharp blades, which can break the graphite mold.

[0056] Compared with the prior art, the impact head of the pneumatic pick 1 in this embodiment is arranged as a spiral blade structure. By utilizing the characteristics of the spiral, the spiral blade can gradually draw in and crush the graphite mold when rotating, while generating a certain axial thrust, thereby promoting the smooth discharge of graphite and avoiding accumulation in the crushing area.

[0057] Furthermore, in order to enable the first tool 11 to clean the graphite mold inside the casting at multiple angles and enhance the cleaning effect, a spring 12 is provided on the upper part of the first tool 11 in this embodiment, and the other end of the spring 12 is connected to the pick 14. On the one hand, the spring 12 can automatically adjust the extension length and angle of the first tool 11, ensuring that the first tool 11 always maintains good contact with the graphite mold, ensuring that the impact force can be effectively transmitted to the graphite, and improving the crushing efficiency and the working flexibility of the pneumatic pick 1; on the other hand, since the pneumatic pick 1 will generate high-frequency impact action when working, the spring 12 can effectively buffer the impact force of the pneumatic pick 1, reducing the vibration of the overall structure of the pneumatic pick 1 and the operator's arm.

[0058] The first tool 11 and the pick 14 are made of carbon steel, which has a much higher strength than graphite and can clean and crush the mold structure, but its hardness is lower than that of titanium alloy and will not cause damage to the titanium alloy product.

[0059] The dust collecting device 2 is arranged on the pick 14 of the pneumatic pick 1 and is used for collecting dust when the pneumatic pick 1 is working, thereby reducing the risk of workers inhaling dust.

[0060] The dust collecting device 2 includes a baffle cover 21 , a dust collector 22 , a dust collecting pipe 23 and a dust collecting hopper 24 .

[0061] During the crushing operation of the pneumatic pick 1, dust will spread all around. The baffle cover 21 in this embodiment is arranged at a semi-enclosed position of the casting and is threadedly connected to the pick 14. The baffle cover 21 is arranged in an umbrella-shaped structure, which can effectively cover the area where dust is generated when the pneumatic pick 1 is working, intercept dust in multiple directions, and reduce the escape of dust into the surrounding space.

[0062] The bottom 154 of the baffle cover 21 is provided with a dust collector 22, which is used to suck the dust collected at the baffle cover 21 into the dust suction pipe 23. The dust suction pipe 23 is arranged at the rear of the dust collector 22 and connected to the dust collecting hopper 24. The dust suction pipe 23 transports the dust sucked by the dust collector 22 to the dust collecting hopper 24 for collection.

[0063] Example 2

[0064] In order to improve the cutting efficiency of the pneumatic pick 1 on the graphite mold, this embodiment is improved on the basis of embodiment 1, such as Figure 2 As shown, a second cutter 15 is arranged on the upper part of the first cutter 11 .

[0065] like Figure 3 As shown, the second tool 15 is set as a disc structure, which is used to assist the first tool 11 in cutting the graphite mold. The second tool 15 includes a bottom 154, a center portion 151, a cutting portion 153 and an edge portion 152. The center portion 151 is used to connect with the pick 14 on the upper part of the first tool 11, so that the second tool 15 rotates as the pick 14 rotates. The edge portion 152 is the circumferential edge of the disc structure.

[0066] A cutting portion 153 is disposed between the central portion 151 and the edge portion 152 and is circumferentially disposed around the central axis of the second cutter 15 . The length direction of the cutting portion 153 is the radial direction of the disc structure and extends from the central portion 151 to the edge portion 152 .

[0067] It should be noted that in order to enable the second tool 15 to obtain greater centrifugal force during rotation so that the cut graphite mold can automatically move toward the edge, the height of the cutting portion 153 is gradually increased from the center portion 151 to the edge portion 152 .

[0068] Considering that graphite is easy to slide, in order to enable the cutting portion of the second tool 15 to more effectively cut and crush the graphite mold when rotating, and to improve the cutting efficiency of the pneumatic pick 1, the cutting portion of the second tool 15 in this embodiment is set to a sawtooth structure. The sawtooth structure can increase the contact points between the tool and the graphite and the points of action of the cutting force, and can clamp the graphite material during cutting, making it difficult to slide during the cutting process, making the graphite easier to be crushed, and can effectively reduce the blockage and adhesion of the graphite during the cutting process.

[0069] Compared with the prior art, the second cutter 15 is provided on the upper part of the first cutter 11 in this embodiment to assist the first cutter 11 in cutting the graphite mold. In view of the slippery property of graphite, the second cutter 15 in this embodiment is set to be serrated to prevent the graphite from sliding on the blade surface and improve the cutting accuracy of the graphite mold.

[0070] Furthermore, in order to effectively crush the graphite and improve the cutting efficiency, the present embodiment divides the cutting part 153 into a coarse crushing area and a fine crushing area. The saw teeth in the coarse crushing area are larger than the saw teeth in the fine crushing area, and the saw teeth spacing in the coarse crushing area is larger than the saw teeth spacing in the fine crushing area.

[0071] The coarse crushing area is used to cut large graphite into smaller pieces, and the fine crushing area is used to break up the cut graphite for easy discharge from the semi-closed end. Since the near edge area of ​​the cutting part 153 is convenient for the initial processing of the graphite mold, the area near the edge 152 of the cutting part 153 is set as the coarse crushing area. The shape of the saw teeth is coarse, and the density between the saw teeth is sparse, so that there is enough strength to withstand greater impact and pressure during rough cutting, and the graphite fragments can smoothly enter the fine crushing area for further processing. The other areas of the cutting part 153 are fine crushing areas. The shape of the saw teeth is smaller than the coarse crushing area, and the teeth are slightly denser, so that the saw teeth can act more accurately on the fragments and cut them more delicately.

[0072] The plane between the saw teeth in the second tool 15 is parallel to the upper surface, i.e., the bottom surface, of the bottom 154 of the disc structure. Figure 4 As shown, the angle between one side and the plane between the saw teeth is A, and the angle between the other side and the plane between the saw teeth is B. Since graphite is relatively soft and has a certain greasy feeling, further, in order to enable the saw teeth to initially insert into the large block of graphite and avoid slipping due to overly sharp angles, the angle B of the saw teeth is set to 60°<B<75°, so that the saw teeth can better cut into the edge of the graphite and generate appropriate crushing force inside the graphite.

[0073] Graphite is a soft material. If A is too small, the sawtooth strength is insufficient and it is easy to be damaged. If A is too large, the chip removal is not smooth, which affects the crushing effect. In this embodiment, 135°<A<145° is set to ensure that the sawtooth has sufficient strength to withstand the force in the graphite cutting process, and at the same time, it is conducive to the smooth discharge of the crushed graphite chips. During the cutting process, the graphite chips can slide smoothly along the rear surface of the sawtooth to avoid the accumulation of graphite chips on the sawtooth, thereby ensuring a continuous crushing process.

[0074] Compared with the prior art, the saw teeth of the cutting portion 153 of the second tool 15 in this embodiment are arranged from large to small and from sparse to dense from the edge to the near center, so that the saw teeth at the edge can be used to coarsely crush the graphite, and the saw teeth near the center can be used for fine crushing, thereby improving the efficiency of the entire crushing process; in view of the soft characteristics of the graphite mold, the tooth structure and the horizontal inclination angle are set to A on one side and B on the other side, 135°<A<145° to ensure that the saw teeth have sufficient strength to withstand the force in the process of cutting graphite, and at the same time facilitate the smooth discharge of the crushed graphite chips; 60°<B<75°, the saw teeth can initially be inserted into the large block of graphite, and slipping due to overly sharp angles can be avoided. The saw teeth can better cut into the edge of the graphite and generate appropriate crushing force inside the graphite.

[0075] Furthermore, in order to make the cutting part of the second tool 15 adaptable to the graphite molds at different crushing stages, the present embodiment is provided with a cutting part angle adjustment structure 155 to change the inclination angle of the cutting part in real time. A smaller cutting part inclination angle is used in the initial crushing stage of graphite so as to quickly cut into the graphite; when the graphite is initially crushed, the angle is increased to enhance the tearing and crushing effect.

[0076] The cutting portion angle adjustment structure 155 includes an adjustment plate 1551 and an adjustment slot 1552. The adjustment plate 1551 is arranged at both ends of the cutting portion 153. The adjustment plate 1551 is an L-shaped plate, one end of which is fixed to the cutting portion 153, and the other end is connected to the center portion 151 and the edge portion 152 of the disc structure. The center portion 151 and the edge portion 152 of the disc structure are provided with an adjustment slot 1552, and a through hole is provided on the adjustment plate 1551. The adjustment slot 1552 corresponds to the through hole, and bolts can be inserted into the adjustment slot 1552 and the through hole to position the angle of the adjustment plate 1551 and the cutting portion.

[0077] Compared with the prior art, the present embodiment is provided with a cutting portion angle adjustment structure 155, which is used to adjust the inclination angle of the cutting portion to adapt to the graphite molds of different states at different crushing stages. In the initial crushing stage of graphite, a smaller cutting portion inclination angle is used to quickly cut into the graphite; when the graphite is initially crushed, the angle is increased to enhance the tearing and crushing effect.

[0078] Furthermore, since the heat generated by the cutting of the cutter is not easy to dissipate in the semi-enclosed container, which affects the service life of the cutter, the present embodiment is provided with micropores on the blades of the first cutter 11 and the second cutter 15, and the micropores form air flow channels during the graphite crushing process. When the cutter rotates at high speed, the air flows through the micropores, which cools the cutter and blows away the graphite dust, reduces the adhesion of graphite dust on the cutter surface, and improves the heat dissipation performance and working stability of the cutter.

[0079] Example 3

[0080] In order to improve the dust collection efficiency, this embodiment improves the dust collection pipe 23 of the dust collection device 2 based on the embodiment 1 or the embodiment 2, such as Figure 5 As shown, a combined structure of a venturi tube 231 and a conical disk 232 is arranged inside the dust suction pipe 23 .

[0081] The venturi tube 231 has a contraction section and an expansion section in the pipeline. When the dust-laden airflow passes through the contraction section of the venturi tube 231, the velocity of the airflow will increase significantly, and the dust particles will move faster under the acceleration of the airflow, which helps to transport the dust to the collection area of ​​the dust collecting device 2 more quickly and is not easy to adhere to the pipeline wall.

[0082] At the same time, the venturi tube 231 easily forms a negative pressure area in the contraction section, which produces a suction effect on the air inside the dust suction tube 23, thereby improving the dust capture efficiency.

[0083] Furthermore, the conical disc 232 is arranged at the lower center of the contraction section of the venturi tube 231 through a fixing frame. A lower low-pressure zone is further formed inside the conical tube, so that the dust airflow is further and faster sucked in.

[0084] Compared with the prior art, the present embodiment provides a combined structure of a venturi tube 231 and a conical disk 232 in the dust suction pipe 23, and utilizes the venturi effect to increase the flow velocity of the dust, thereby accelerating the speed at which the dust enters the dust collecting hopper 24; the venturi tube 231 and the conical disk 232 form a low-pressure area, so that the dust is sucked in faster, thereby improving the dust capture efficiency.

[0085] During the mold cleaning process, the graphite is broken into larger graphite blocks by the pneumatic pick 1, and a small portion of the graphite blocks may splash and be sucked to the nozzle of the vacuum cleaner 22, causing the vacuum cleaner 22 to be blocked. Figure 6 As shown, in this embodiment, a third cutter 16 is provided at the mouth of the vacuum cleaner 22 to break the graphite blocks sucked into the mouth of the vacuum cleaner 22 .

[0086] like Figure 7 and Figure 8 As shown, the third tool 16 includes a limiting column 161, a transmission ring 162, a connecting column 163, a transmission gear 165, a blade 164 and a transmission rod 166. The transmission rod 166 is connected to the pick 14 and is used to provide transmission force for the third tool 16. The limiting column 161 includes a circumferential part and a cylindrical part. The circumferential part is sleeved on the transmission rod 166 and can rotate with the transmission rod 166; the end of the cylindrical part is connected to the transmission ring 162. A connecting column 163 is provided on the edge of the transmission ring 162, and the transmission ring 162 transmits the rotation of the limiting column 161 to the connecting column 163. The end of the connecting column 163 is fixed to the transmission gear 165, and the rotation of the connecting column 163 is converted into the rotation of the transmission gear 165. Therefore, the rotation of the transmission rod 166 eventually drives the transmission gear 165 to rotate, and drives the blade 164 fixed to the transmission gear 165 to rotate. The blade 164 in the third tool 16 is a blade type. The rotation of the third cutter 16 cuts and breaks the graphite blocks sucked into the mouth of the vacuum cleaner 22 , ensuring that the graphite blocks will not block the vacuum cleaner 22 .

[0087] Compared with the prior art, the present embodiment is provided with a third tool 16 at the outlet of the vacuum cleaner 22. By utilizing the transmission rod 166, the limiting column 161, the transmission ring 162, the connecting column 163 and the transmission gear 165, the blade 164 is driven by the power of the pneumatic pick 1 to rotate, thereby breaking the graphite blocks splashed and sucked to the outlet of the vacuum cleaner 22 into smaller graphite blocks, thereby avoiding clogging of the dust collecting device.

[0088] Example 4

[0089] Another embodiment of the present invention discloses a method for cleaning the interior of a semi-enclosed casting, based on the device for cleaning the interior of a semi-enclosed casting of Embodiment 3, comprising the following steps:

[0090] Step 1: Start the driving structure 13 of the pneumatic pick 1, and the pick head of the pneumatic pick 1 starts to reciprocate up and down and rotate around the central axis of the pneumatic pick 1;

[0091] Step 2: The first cutter 11 and the second cutter 15 rotate into the graphite mold and start cutting the graphite mold; the third cutter 16 rotates to break the graphite blocks splashed into the mouth of the vacuum cleaner 22;

[0092] The step 2 specifically includes the following steps:

[0093] Step 2.1: The first tool 11 rotates and cuts;

[0094] The cutting method of the first tool 11 in step 2.1 is:

[0095] The spiral blade rotates into the graphite mold to cut. During the cutting process, the graphite mold is gradually drawn in and broken during rotation, and a certain axial thrust is generated at the same time, which promotes the smooth discharge of graphite and avoids accumulation in the broken area.

[0096] Step 2.2: The second tool 15 enters the graphite mold for cutting along with the first tool 11;

[0097] The cutting method of the second tool 15 is:

[0098] The second tool 15 rotates with the first tool 11 and enters the mold. The coarse serrations in the coarse crushing zone of the cutting portion 153 coarsely crush the large mold that has been simply cut by the first tool 11. Since the coarse serrations are sparse, the graphite fragments can smoothly enter the fine crushing zone. The serrations in the fine crushing zone further process the graphite fragments. Since the serrations are dense, they can act more accurately on the fragments and perform fine cutting so that the graphite mold can be smoothly discharged from the inside of the casting.

[0099] Furthermore, since the sawtooth shape is designed for graphite materials, the sawtooth can better cut into the edge of the graphite, generate appropriate crushing force inside the graphite, and avoid slipping; during the cutting process, the graphite chips can slide smoothly along the rear surface of the sawtooth, avoiding the accumulation of graphite chips on the sawtooth, thereby ensuring a continuous crushing process.

[0100] After cutting for a period of time, when there are fewer large mold blocks inside the casting, the inclination angle of the cutting portion of the second tool 15 is increased to increase the tearing and crushing effect of the cutting portion on the graphite mold block.

[0101] During the cutting process, the heat generated by the cutting of the first cutter 11 and the second cutter 15 is dissipated through the micro-holes provided on the cutting edge.

[0102] Furthermore, due to the buffering of the spring 12, the vibration amount of the first cutter 11 and the second cutter 15 is reduced, and the cutting angle inside the casting can be adjusted at any time as needed.

[0103] Step 2.3: The third cutter 16 rotates to cut the graphite fragments entering the opening of the dust suction pipe 23 .

[0104] The pick 14 transmits power to the transmission rod 166, and transmits it to the transmission gear 165 through the limit column 161, the transmission ring 162, and the connecting column 163. The transmission gear 165 transmits the rotation to the blade 164. The rotation of the blade 164 cuts and breaks the graphite fragments to ensure that the graphite blocks will not block the dust collection system.

[0105] Step 3: The baffle cover 21 blocks the dust and collects it inside the baffle cover 21 ; the vacuum cleaner 22 is turned on; the dust collected by the baffle cover 21 is sucked into the vacuum cleaner 22 and enters the dust collecting hopper 24 through the vacuum pipe 23 .

[0106] In step 3, the vacuum cleaner 22 sucks the dust into the dust suction pipe 23, and the dust suction pipe 23 is provided with a combination structure of a venturi tube 231 and a conical disk 232. The lower part of the venturi tube 231 and the conical disk 232 form a negative pressure zone, which accelerates the adsorption of dust and transports the dust to the collection area of ​​the dust collecting device 2 more quickly, and the dust is not easily attached to the pipe wall.

[0107] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A semi-enclosed casting internal cleaning device, characterized in that: It comprises a pneumatic pick (1) and a dust collecting device (2); The pneumatic pick (1) comprises a first tool (11), a driving structure (13) and a pick (14); The first tool (11) performs reciprocating linear motion and rotational motion under the driving structure (13) to break the graphite mold inside the casting; The pickaxe (14) is used to connect the first tool (11) and the driving structure (13); The dust collecting device (2) is used to collect dust generated when the pneumatic pick (1) is in operation.

2. The semi-enclosed casting internal cleaning device according to claim 1, characterized in that: The first tool (11) is a spiral blade structure.

3. The semi-enclosed casting internal cleaning device according to claim 1, characterized in that: The pneumatic pick (1) further comprises a spring (12), wherein the spring (12) is arranged on the upper part of the first tool (11), and the spring (12) is used to adjust the extension length and angle of the first tool (11).

4. The semi-enclosed casting internal cleaning device according to claim 1, characterized in that: The dust collecting device (2) is arranged on the pickaxe (14); the dust collecting device (2) comprises a baffle cover (21), a dust collector (22), a dust collecting pipe (23) and a dust collecting hopper (24).

5. The semi-enclosed casting internal cleaning device according to claim 4, characterized in that: The baffle cover (21) is configured as an umbrella-shaped structure.

6. The semi-enclosed casting internal cleaning device according to claim 4, characterized in that: The dust suction pipe (23) connects the dust collector (22) and the dust collecting hopper (24).

7. The semi-enclosed casting internal cleaning device according to claim 6, characterized in that: A venturi tube (231) and a conical disk (232) are arranged inside the dust suction pipe (23).

8. The semi-enclosed casting internal cleaning device according to claim 7, characterized in that: The conical disk (232) is arranged at the lower part of the contraction section of the venturi tube (231).

9. The semi-enclosed casting internal cleaning device according to claim 1, characterized in that: The blade of the first tool (11) is provided with micropores, and the micropores are used for heat dissipation.

10. A method for cleaning the interior of a semi-enclosed casting, characterized in that: A device for cleaning the interior of a semi-enclosed casting as described in any one of claims 1-9.

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