Dust removal device for hardware mold machining

Abstract

The utility model relates to the technical field of hardware mold machining dust removal, and provides a dust removal device for hardware mold machining, which comprises an electric conveying roller, gantry plates fixedly connected to the top ends of the front and rear sides of the electric conveying roller, electric telescopic rods fixedly connected to the middles of the front and rear end faces of the gantry plates, and L-shaped plates fixedly connected to the output ends of the electric telescopic rods. Rubber strips are fixedly connected to the inner sides of the L-shaped plates, a hollow shell is fixedly connected to the top of the gantry plate, a motor is fixedly connected to the front end face of the hollow shell, and a two-way threaded rod is fixedly connected to the output end of the motor. According to the technical scheme, the problem that all gaps in the surface of the hardware mold are difficult to clean at the fixed positions of the nozzles in the prior art is solved, the motor controls the two-way threaded rod to enable the two nozzles to slide left and right on the gantry plate together with the air conveying pipe and the micro air pump, dust removal operation can be carried out on the hardware mold with a large area, and dust removal efficiency is improved. The dedusting range and the dedusting efficiency are improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal in hardware mold processing, and specifically relates to a dust removal device used for hardware mold processing. Background Art

[0002] Metal molds are a type of process equipment used to produce metal products. Through a series of processes, metal raw materials are processed into products with a certain shape, size and precision.

[0003] Metal mold dust removal refers to the process of removing dust, metal chips, oil and other impurities from the surface and tiny gaps of metal molds. It is not only to keep the mold clean, but also to ensure the quality of the product and reduce failures in production. Dust and impurities on the mold may cause defects in the product, such as scratches, pits or dimensional deviations, affecting the quality of the final product. In addition, mold cleaning also helps reduce equipment failures and downtime and improve production efficiency.

[0004] However, when dust is removed from a metal mold, the first step is to blow compressed air toward the metal mold. However, when blowing air on the surface of the metal mold, a vertical downward blowing method is usually adopted. The gas flows rapidly to remove dust from the center of the metal mold. However, the air pump used for blowing in this way is usually fixed at a certain place, so that the nozzle can only be fixed directly above the metal mold. This makes it difficult for the dust hidden at the edge of the metal mold to be blown away by the compressed air. In view of this, a dust removal device for metal mold processing is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model provides a dust removal device for hardware mold processing, which solves the problem in the related art that it is difficult to clean all the gaps on the surface of the hardware mold due to the fixed position of the nozzle.

[0006] The technical solution of the utility model is as follows: a dust removal device for hardware mold processing, comprising an electric conveying roller, the top ends of the front and rear sides of the electric conveying roller are fixedly connected to gantry plates, the middle of the front and rear end surfaces of the gantry plate are fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected to an L-shaped plate, the inner side of the L-shaped plate is fixedly connected to a rubber strip, the top of the gantry plate is fixedly connected to a hollow shell, the front end surface of the hollow shell is fixedly connected to a motor, the output end of the motor is fixedly connected to a bidirectional threaded rod, the outer side of the bidirectional threaded rod is spirally connected to a moving block, the middle of the right side of the moving block is fixedly connected to an air pipe, the bottom end of the air pipe is fixedly connected to a nozzle, the end of the air pipe away from the nozzle is fixedly connected to a micro air pump, the bottom of the micro air pump is fixedly connected to a slider, the inside of the slider is slidably connected to a guide rail, and the front and rear ends of the guide rail are fixedly connected to vertical plates.

[0007] As a further description of the above technical solution: the outer end face of the L-shaped plate contacts the lower inner side of the gantry plate, the end of the bidirectional threaded rod away from the motor is rotatably connected to the middle of the rear interior of the hollow shell, the outer side of the moving block contacts the inner wall of the hollow shell, the outer side of the nozzle is slidingly connected to the middle of the upper interior of the gantry plate and the middle of the lower interior of the hollow shell, the middle of the top of the hollow shell is slidingly connected to the outer side of one end of the air pipe close to the moving block, and the lower end face of the vertical plate is fixedly connected to the right side of the top of the gantry plate, so that the two nozzles together with the air pipe and the micro air pump can slide left and right on the gantry plate, and dust removal operations can be performed on hardware molds with a larger area, avoiding the fixed position nozzle only spraying dust removal at the center of the hardware mold.

[0008] As a further description of the above technical solution: the electric telescopic rod, motor and micro air pump are all controlled by a PLC controller, and the PLC controller controls the motor and micro air pump to open and close at the same time. When the motor and the micro air pump are turned on, the electric telescopic rod extends, and when the motor and the micro air pump are turned off, the electric telescopic rod retracts. When the hardware mold is transported by an electric conveyor roller and is directly below the gantry plate, the electric telescopic rod drives the L-shaped plate to be squeezed and fixed to the edge of the hardware mold, thereby preventing the hardware mold from being driven by the electric conveyor roller to move out from under the gantry plate when the two nozzles move back and forth.

[0009] As a further description of the above technical solution: the number of the moving blocks and the micro air pump are both two, the moving blocks are distributed on the front and rear sides of the bidirectional threaded rod, and the micro air pump and the moving block are in parallel, and the air pipe is a metal hard pipe as a whole. When the nozzle is driven and moved by the moving block, the hard air pipe can drive the micro air pump and the slider to slide along the outside of the guide rail following the moving block.

[0010] As a further description of the above technical solution: a slide groove from front to back is opened in the middle of the lower interior of the hollow shell and in the upper middle of the gantry plate, and the width of the slide groove matches the diameter of the middle cross-section of the air pump; a slide groove from front to back is also opened in the middle of the top of the hollow shell, and the width of the slide groove in the middle of the top of the hollow shell matches the cross-section diameter of the air pipe, thereby achieving the purpose of the nozzle and the air pipe following the movement of the moving block, avoiding the situation where the nozzle in a fixed position only sprays dust to the center of the hardware mold, while the dust hidden at the edge of the hardware mold is difficult to be sprayed away by gas, thereby improving the dust removal range and dust removal efficiency to a certain extent.

[0011] As a further description of the above technical solution: the left and right end surfaces of the gantry plate are fixedly connected with a hollow plate, the top of the hollow plate is fixedly connected with a hydraulic rod, the output end of the hydraulic rod is fixedly connected with a sliding plate, the middle below the electric conveying roller is fixedly connected with a vacuum cleaner, the top input end of the vacuum cleaner is fixedly connected with a vacuum pipe, the end of the vacuum pipe away from the vacuum cleaner is fixedly connected with a vacuum plate, the front end output end of the vacuum cleaner is fixedly connected with a discharge pipe, the bottom of the front and rear sides of the hollow plate are fixedly connected to the top of the electric conveying roller, and the middle of the inside of the hollow plate is slidably connected to the outside of the sliding plate.

[0012] As a further description of the above technical solution: a groove is opened from bottom to top in the middle of the hollow plate, and the longitudinal section shape and width of the groove match the longitudinal section shape and thickness of the sliding plate. The upper and lower heights of the sliding plate are half of the upper and lower heights of the hollow plate. When the micro air pump uses the nozzle to spray dust on the hardware mold, the sliding plates on the left and right sides of the gantry plate can be slid downward, which can prevent dust from flying out from the left and right sides of the gantry plate when the nozzle is removing dust from the surface of the hardware mold, affecting the working environment around the electric conveying roller.

[0013] As a further description of the above technical solution: the electric conveyor roller is composed of a number of rotating roller rods, and there is a gap of 1.5 centimeters between the roller rods. The front and rear length of the dust suction plate is the same as the front and rear length of the roller rods. The dust passes through the gaps between the electric conveyor rollers, and reaches the vacuum cleaner through the dust suction plate and the dust suction pipe, and is discharged outward from the discharge pipe. This not only prevents the dust from affecting the environment around the electric conveyor roller, but also facilitates the operator to collect and centrally process the dust on the surface of the hardware mold.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. The utility model solves the problem in the prior art that it is difficult to clean all the gaps on the surface of the hardware mold with the nozzle fixed in the prior art through design coordination. The motor controls the bidirectional threaded rod to allow the two nozzles together with the air pipe and the micro air pump to slide left and right on the gantry plate, so that the dust removal operation can be performed on the hardware mold with a larger area, avoiding the situation that the nozzle at the fixed position only sprays dust at the center of the hardware mold, while the dust hidden at the edge of the hardware mold is difficult to be sprayed away by the gas, thereby improving the dust removal range and dust removal efficiency to a certain extent.

[0016] 2. In the utility model, through design coordination, the device can slide the sliding plates on the left and right sides of the gantry plate downward when the micro air pump uses the nozzle to spray dust on the hardware mold, so as to avoid dust flying out from the left and right sides of the gantry plate when the nozzle removes dust on the surface of the hardware mold, affecting the working environment around the electric conveyor roller. At the same time, a vacuum cleaner for absorbing dust is arranged under the electric conveyor roller. The dust passes through the gap between the electric conveyor rollers, reaches the vacuum cleaner through the vacuum plate and the vacuum pipe, and is discharged from the discharge pipe. This not only avoids the dust from affecting the environment around the electric conveyor roller, but also facilitates the operator to collect and centrally process the dust on the surface of the hardware mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the longitudinal section of the hollow shell of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the electric telescopic rod of the utility model;

[0021] Figure 4 It is a schematic diagram of the vertical cross-section of the hollow plate of the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the vacuum cleaner of the present utility model.

[0023] In the figure: 1. Electric conveyor roller; 2. Gantry plate; 3. Electric telescopic rod; 4. Hollow shell; 5. Motor; 6. Moving block; 7. Air pipe; 8. Micro air pump; 9. Slider; 10. Guide rail; 11. Vertical plate; 12. Hollow plate; 13. Hydraulic rod; 14. Sliding plate; 15. Discharge pipe; 16. Bidirectional threaded rod; 17. Nozzle; 18. L-shaped plate; 19. Rubber strip; 20. Vacuum cleaner; 21. Vacuum pipe; 22. Vacuum plate. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 to Figure 3As shown, this embodiment proposes a dust removal device for hardware mold processing, including an electric conveying roller 1, a gantry plate 2 is welded to the top of the front and rear sides of the electric conveying roller 1, an electric telescopic rod 3 is fixed by bolts in the middle of the front and rear end surfaces of the gantry plate 2, an L-shaped plate 18 is welded at the output end of the electric telescopic rod 3, a rubber strip 19 is fixed by bolts on the inner side of the L-shaped plate 18, a hollow shell 4 is welded on the top of the gantry plate 2, a motor 5 is fixed by bolts on the front end surface of the hollow shell 4, an output shaft at the output end of the motor 5 passes through the inside of a bidirectional threaded rod 16 and is welded and fixed, the outer side of the bidirectional threaded rod 16 passes through the inside of a moving block 6 and is spirally connected with the internal thread of the moving block 6, an air pipe 7 is welded in the middle of the right side of the moving block 6, a nozzle 17 is arranged at the bottom end of the air pipe 7, a micro air pump 8 is fixed by bolts at the end of the air pipe 7 away from the nozzle 17, and the bottom of the micro air pump 8 is fixed by The slider 9 is fixed by bolts, and the inside of the slider 9 is penetrated and slides by the guide rail 10. The vertical plates 11 are welded at the front and rear ends of the guide rail 10, and the outer end surface of the L-shaped plate 18 contacts the lower inner side of the gantry plate 2. The end of the bidirectional threaded rod 16 away from the motor 5 is rotatably connected to the middle of the rear inside the hollow shell 4, and the outer side of the moving block 6 contacts the inner wall of the hollow shell 4. The outer side of the nozzle 17 is slidably connected to the middle of the upper inside of the gantry plate 2 and the middle of the lower inside of the hollow shell 4. The middle of the top of the hollow shell 4 is slidably connected to the outer side of one end of the air pipe 7 close to the moving block 6, and the lower end surface of the vertical plate 11 is fixedly connected to the right side of the top of the gantry plate 2, so that the two nozzles 17 can slide left and right on the gantry plate 2 together with the air pipe 7 and the micro air pump 8, so that dust removal operations can be performed on hardware molds with larger areas, avoiding the nozzle 17 in a fixed position from spraying dust only at the center of the hardware mold.

[0026] In this embodiment, the electric telescopic rod 3, the motor 5 and the micro air pump 8 are all controlled by a PLC controller. The PLC controller controls the motor 5 and the micro air pump 8 to turn on and off at the same time. When the motor 5 and the micro air pump 8 are turned on, the electric telescopic rod 3 extends, and when the motor 5 and the micro air pump 8 are turned off, the electric telescopic rod 3 retracts. When the hardware mold is transported by the electric conveying roller 1 and is directly below the gantry plate 2, the electric telescopic rod 3 drives the L-shaped plate 18 to be squeezed and fixed to the edge of the hardware mold, thereby preventing the hardware mold from being driven by the electric conveying roller 1 to move out from under the gantry plate 2 when the two nozzles 17 move back and forth.

[0027] In this embodiment, there are two moving blocks 6 and two micro air pumps 8. The moving blocks 6 are distributed on the front and rear sides of the bidirectional threaded rod 16, and the micro air pump 8 is parallel to the moving block 6. The air supply pipe 7 is a metal hard pipe. When the nozzle 17 is driven and moved by the moving block 6, the hard air supply pipe 7 can drive the micro air pump 8 and the slider 9 to slide along the outside of the guide rail 10 along with the moving block 6.

[0028] In the present embodiment, a slide groove from front to back is provided in the middle of the lower interior of the hollow shell 4 and in the upper middle interior of the gantry plate 2, and the width of the slide groove matches the diameter of the middle cross section of the air pump; a slide groove from front to back is also provided in the middle of the top of the hollow shell 4, and the width of the slide groove in the middle of the top of the hollow shell 4 matches the diameter of the cross section of the air pipe 7, so that the nozzle 17 and the air pipe 7 can follow the movement of the moving block 6, avoiding the situation where the nozzle 17 in a fixed position only sprays dust to the center of the hardware mold, while the dust hidden at the edge of the hardware mold is difficult to be sprayed away by gas, thereby improving the dust removal range and dust removal efficiency to a certain extent.

[0029] Example 2

[0030] like Figure 4 As shown in the figure, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the left and right end surfaces of the gantry plate 2 are welded with a hollow plate 12, the top of the hollow plate 12 is fixed with a hydraulic rod 13 by bolts, and a sliding plate 14 is welded to the output end of the hydraulic rod 13. A vacuum cleaner 20 is arranged in the middle below the electric conveying roller 1, and a vacuum pipe 21 is arranged at the input end of the top of the vacuum cleaner 20. The end of the vacuum pipe 21 away from the vacuum cleaner 20 passes through the middle of the inside of the vacuum plate 22 and is fixed by bolts. A discharge pipe 15 is arranged at the output end of the front end surface of the vacuum cleaner 20. The bottom of the front and rear sides of the hollow plate 12 is fixedly connected to the top of the electric conveying roller 1, and the middle of the inside of the hollow plate 12 is slidably connected to the outer side of the sliding plate 14.

[0031] In this embodiment, a groove is opened from bottom to top in the middle of the hollow plate 12, and the longitudinal section shape and width of the groove match the longitudinal section shape and thickness of the sliding plate 14. The upper and lower heights of the sliding plate 14 are half of the upper and lower heights of the hollow plate 12. When the micro air pump 8 uses the nozzle 17 to spray dust on the hardware mold, the sliding plates 14 on the left and right sides of the gantry plate 2 can be slid downward, which can prevent dust from flying out from the left and right sides of the gantry plate 2 when the nozzle 17 is removing dust from the surface of the hardware mold, thereby affecting the working environment around the electric conveyor roller 1.

[0032] In this embodiment, the electric conveyor roller 1 is composed of a plurality of rotating roller rods, and there is a gap of 1.5 centimeters between the roller rods. The front-to-back length of the dust suction plate 22 is the same as the front-to-back length of the roller rods. The dust passes through the gaps between the electric conveyor rollers 1, and reaches the vacuum cleaner 20 through the dust suction plate 22 and the dust suction pipe 21, and is discharged outward from the discharge pipe 15. This not only prevents the dust from affecting the environment around the electric conveyor roller 1, but also facilitates the operator to collect and centrally process the dust on the surface of the hardware mold.

[0033] Among them, the PLC controller and micro air pump 8 proposed in this application are common products on the market. The model of the PLC controller is Siemens S7-1200, and the model of the micro air pump 8 is AJK-B1201. This application does not make any internal structural modifications to the PLC controller and the micro air pump 8, and does not affect their normal use. Therefore, this specification does not describe them in detail.

[0034] Working process: when in use, turn on the vacuum cleaner 20 located under the electric conveyor roller 1. The vacuum cleaner 20 absorbs the dust under the electric conveyor roller 1 through the vacuum pipe 21 and the vacuum plate 22, and discharges it from the discharge pipe 15. Turn on the electric conveyor roller 1, put the hardware mold on the electric conveyor roller 1, and the hardware mold is driven by the electric conveyor roller 1 to move directly under the gantry plate 2. When the middle of the top of the hardware mold is flush with the nozzle 17 below the middle of the gantry plate 2, start the hydraulic rods 13 on the left and right sides of the gantry plate 2. The hydraulic rods 13 push the sliding plate 14 downward and Sliding along the inside of the hollow plate 12, the bottom of the sliding plate 14 stops after contacting the top of the electric conveying roller 1, and the electric telescopic rod 3, the motor 5 and the micro air pump 8 are started simultaneously by the PLC controller. First, the electric telescopic rod 3 drives the L-shaped plate 18 to move to the edge of the hardware mold until the rubber strip 19 inside the L-shaped plate 18 contacts the edge of the hardware mold and then stops the electric telescopic rod 3. Then the micro air pump 8 compresses the air and delivers it to the nozzle 17 through the air pipe 7. The nozzle 17 sprays dust on the middle of the upper surface of the hardware mold, and then the motor 5 drives the output end The bidirectional threaded rod 16 rotates, and the moving block 6 on the outside of the bidirectional threaded rod 16 moves to the front and rear sides of the bidirectional threaded rod 16. The moving block 6 drives the nozzle 17 and the air pipe 7 to move at the same time, and the end of the air pipe 7 away from the nozzle 17 is connected to the micro air pump 8, and the micro air pump 8 is driven by the air pipe 7 to slide together with the slider 9, and the slider 9 slides along the outside of the guide rail 10 on the inner side of the vertical plate 11. After the moving block 6 moves to the outer top of the bidirectional threaded rod 16, the motor 5 reverses, and the moving block 6 starts to move toward the center of the bidirectional threaded rod 16. At this time, the nozzle 17 The ejected compressed gas blows away the dust on the surface of the hardware mold. With the help of the vacuum cleaner 20 located below the electric conveyor roller 1, the dust enters the vacuum cleaner 20 through the vacuum plate 22 and the vacuum pipe 21, and is then discharged outward from the discharge pipe 15. When the two moving blocks 6 contact at the center of the bidirectional threaded rod 16, the PLC controller controls the motor 5 and the micro air pump 8 to turn off, the electric telescopic rod 3 retracts, and the hydraulic rod 13 also drives the sliding plate 14 to retract upward toward the inside of the hollow plate 12. At this time, the cleaned hardware mold is transported to the next processing line along the electric conveyor roller 1.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust removal device for metal mold processing, comprising a motorized conveying roller (1), characterized in that: The top ends of the front and rear sides of the electric conveying roller (1) are fixedly connected to a gantry plate (2); the middle of the front and rear end surfaces of the gantry plate (2) are fixedly connected to an electric telescopic rod (3); the output end of the electric telescopic rod (3) is fixedly connected to an L-shaped plate (18); the inner side of the L-shaped plate (18) is fixedly connected to a rubber strip (19); the top of the gantry plate (2) is fixedly connected to a hollow shell (4); the front end surface of the hollow shell (4) is fixedly connected to a motor (5); the output end of the motor (5) is fixedly connected to a bidirectional threaded rod (16 ), the outer side of the bidirectional threaded rod (16) is spirally connected to a moving block (6), the middle of the right side of the moving block (6) is fixedly connected to an air supply pipe (7), the bottom end of the air supply pipe (7) is fixedly connected to a nozzle (17), the end of the air supply pipe (7) away from the nozzle (17) is fixedly connected to a micro air pump (8), the bottom of the micro air pump (8) is fixedly connected to a slider (9), the inside of the slider (9) is slidably connected to a guide rail (10), and the front and rear ends of the guide rail (10) are fixedly connected to vertical plates (11).

2. A dust removal device for metal mold processing according to claim 1, characterized in that: The outer end surface of the L-shaped plate (18) contacts the lower inner side of the gantry plate (2); the end of the bidirectional threaded rod (16) away from the motor (5) is rotatably connected to the middle of the rear interior of the hollow shell (4); the outer side of the moving block (6) contacts the inner wall of the hollow shell (4); the outer side of the nozzle (17) is slidably connected to the middle of the upper interior of the gantry plate (2) and the middle of the lower interior of the hollow shell (4); the middle of the top of the hollow shell (4) is slidably connected to the outer side of one end of the air pipe (7) close to the moving block (6); and the lower end surface of the vertical plate (11) is fixedly connected to the right side of the top of the gantry plate (2).

3. A dust removal device for metal mold processing according to claim 1, characterized in that: The electric telescopic rod (3), the motor (5) and the micro air pump (8) are all controlled by a PLC controller, and the PLC controller controls the motor (5) and the micro air pump (8) to turn on and off simultaneously; when the motor (5) and the micro air pump (8) are turned on, the electric telescopic rod (3) extends, and when the motor (5) and the micro air pump (8) are turned off, the electric telescopic rod (3) retracts.

4. A dust removal device for metal mold processing according to claim 1, characterized in that: The number of the moving blocks (6) and the number of the micro air pump (8) are both two. The moving blocks (6) are distributed on the front and rear sides of the bidirectional threaded rod (16), and the micro air pump (8) and the moving blocks (6) are in parallel. The air delivery pipe (7) is a metal hard pipe as a whole.

5. A dust removal device for metal mold processing according to claim 1, characterized in that: A slide groove extending from front to back is provided in the middle of the lower interior of the hollow shell (4) and in the upper interior of the gantry plate (2), and the width of the slide groove matches the diameter of the middle cross section of the air pump. A slide groove extending from front to back is also provided in the middle of the top of the hollow shell (4), and the width of the slide groove in the middle of the top of the hollow shell (4) matches the diameter of the cross section of the air delivery pipe (7).

6. A dust removal device for metal mold processing according to claim 1, characterized in that: The left and right end surfaces of the gantry plate (2) are fixedly connected to a hollow plate (12); the top of the hollow plate (12) is fixedly connected to a hydraulic rod (13); the output end of the hydraulic rod (13) is fixedly connected to a sliding plate (14); a dust collector (20) is fixedly connected to the middle below the electric conveying roller (1); the top input end of the dust collector (20) is fixedly connected to a dust suction pipe (21); the end of the dust suction pipe (21) away from the dust collector (20) is fixedly connected to a dust suction plate (22); the front end output end of the dust collector (20) is fixedly connected to a discharge pipe (15); the bottom of the front and rear sides of the hollow plate (12) are fixedly connected to the top of the electric conveying roller (1); the middle of the inside of the hollow plate (12) is slidably connected to the outside of the sliding plate (14).

7. A dust removal device for metal mold processing according to claim 6, characterized in that: A groove extending from bottom to top is provided in the middle of the hollow plate (12), and the longitudinal section shape and width of the groove match the longitudinal section shape and thickness of the sliding plate (14). The upper and lower heights of the sliding plate (14) are half of the upper and lower heights of the hollow plate (12).

8. A dust removal device for metal mold processing according to claim 6, characterized in that: The electric conveying roller (1) is composed of a plurality of rotating roller rods, and there is a gap of 1.5 cm between the roller rods. The front-to-back length of the dust collecting plate (22) is the same as the front-to-back length of the roller rods.

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