Graphite round rod anti-edge collapse processing device

Abstract

The application discloses a graphite round rod anti-edge collapse processing device, which comprises a protection assembly, a displacement positioning assembly, a cutting device, a filtering device, a bearing assembly, a supporting structure and a transverse displacement device; the protection assembly is used for gathering cutting dust through cooperation of a baffle and a protection cover, and the cutting dust is purified through negative pressure suction of the filtering device, so that graphite dust escape is reduced; purified gas after filtration is introduced into the bearing assembly through a connecting pipe, part of the gas supports a bearing cloth to form an air cushion, and the other part of the gas enters a movable assembly through a gas distributor to lift a bearing box, and a separate gas supply source is not needed; after the graphite rod is cut, the flexible sinking of the bearing cloth and the pneumatic slow descent of the bearing box jointly absorb the impact, and the reverse airflow is used for dredging internal air holes, so that the secondary edge collapse risk of the cut rod segment due to falling, rebounding and rolling is reduced.

Description

Technical Field

[0001] This invention relates to the field of dust removal in hard and brittle material processing and protection technology for graphite rod cutting. Specifically, it relates to a graphite rod anti-chipping processing device that gathers, sucks, filters and purifies cutting dust during the graphite rod cutting process, and reuses the filtered purified gas for pneumatic buffering of the cut rod segments. Background Technology

[0002] Graphite rods are typical hard and brittle materials. When performing processes such as fixed-length cutting, end face grinding, chamfering, or edge trimming, the direct edge chipping generated during processing can usually be reduced by optimizing the cutting tool structure, adjusting the processing path, and controlling the tool speed and feed rate. At the same time, the cutting process of graphite rods generates a lot of fine graphite dust and particulate debris. If the dust and debris cannot be gathered, sucked up, and filtered in time near the cutting area, it will not only easily pollute the processing environment and affect the stability of the moving parts of the equipment, but may also adhere to the receiving structure, guide structure, or air passage pores, further affecting the receiving stability and processing continuity of subsequent graphite rod segments.

[0003] Existing graphite rod processing equipment typically sets up cutting protection, dust treatment, and unloading reception as independent functional modules. Dust treatment often uses a protective cover in conjunction with a negative pressure suction and filtration device to draw the dust-laden gas generated during cutting into the filtration device and then directly discharge the purified gas. The cut graphite rod segments are usually received by a fixed receiving trough, a rigid tray, or a bearing box with a flexible pad. This type of fixed receiving structure is difficult to absorb the instantaneous impact generated by the falling rod segment. Although a common flexible pad can mitigate the initial contact, its bearing height is fixed and it cannot actively approach the rod segment to be dropped before cutting, nor can it continuously suppress rebound, rolling, and lateral collisions after the rod segment falls.

[0004] Therefore, existing graphite rod processing equipment has at least the following shortcomings: First, although cutting dust can be treated by negative pressure suction and filtration, the purified gas after filtration is usually directly discharged and not further utilized as a working medium for receiving buffer or pneumatic support; Second, if an independent air source is set up to drive the flexible receiving structure, it will increase equipment energy consumption, pipeline complexity and maintenance costs; Third, the cut rod segment may still collide with the receiving structure a second time due to the large falling distance, concentrated contact impact and rebound or rolling after receiving, resulting in notches, cracks or chipping. Therefore, how to reuse the purified gas for material receiving and buffering on the basis of graphite dust collection and purification, while simultaneously reducing dust escape, independent gas supply requirements, and the risk of secondary edge breakage of the cut rod segments, has become a technical problem to be solved in existing graphite round rod hard and brittle material processing equipment. Summary of the Invention

[0005] In order to overcome the problem that the existing graphite round bar processing equipment has a disconnect between the collection and purification of cutting dust and the protection of the cut bar segments, and the filtered purified gas is usually discharged directly without being reused as a working medium for the receiving buffer and pneumatic support, resulting in insufficient coordination of dust control, gas utilization and anti-chipping support, this invention provides a graphite round bar anti-chipping processing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A graphite rod anti-chipping processing device includes a support structure with a lateral displacement device. The support structure includes a horizontal plate A, a horizontal plate B, and a vertical plate. Horizontal plates A and B are connected to the top and bottom of the vertical plate, respectively. A graphite rod conveying structure is connected to the vertical plate. The graphite rod conveying structure can be a symmetrical conveying roller or a structure specifically designed for conveying. The vertical plate also has a mounting plate with a structure similar to a clamping component, used to position and clamp the graphite rod at the cutting position on both sides. A filtering device is located on the horizontal plate A. As per existing technology, this can be a filtration device used for fumes, welding shavings, dust, etc., capable of filtering gas containing dust and debris that is drawn in. Specifically, the lateral displacement device is connected to and works in conjunction with the lateral plate B. The lateral displacement device includes an I-shaped moving block. A matching moving opening for the I-shaped moving block is provided at the top of the I-shaped moving block. A displacement motor is connected to the top of the I-shaped moving block, and a gear at the output end of the displacement motor passes through the top of the I-shaped moving block and meshes with the top of the lateral plate A. Thus, when the displacement motor operates and drives the gear to rotate, the I-shaped moving block can move along the moving opening. This moves the cutting device to a suitable cutting position. The lateral displacement device is used to move the cutting device and the displacement positioning component. Specifically, the I-shaped moving block moves the cutting motor and the rectangular frame installed at the bottom. The cutting motor is installed on the telescopic end of the telescopic cylinder at the bottom of the I-shaped moving block. This allows the cutting device to descend and use the cutting blade to cut the graphite rod. Below the lateral displacement device is the cutting device, which is used to cut the graphite rod. The cutting device includes a cutting motor and a cutting blade connected to the output end of the cutting motor. The cutting motor drives the cutting blade to rotate and cut the graphite rod. The bottom of the lateral displacement device is connected to the displacement positioning component, which is used to maintain the vertical displacement of the protective component. The protective component is connected to the displacement positioning component, which is used to prevent dust and debris generated during cutting from splashing and spreading pollution. A bearing component is provided on the lateral plate A, which is used to receive and protect the cut graphite rod. The bearing component and the filter device are connected through the connecting pipe B. The bottom of the bearing component is provided with a support structure, which is used to support the bearing component and also provides an upward air pressure force to form an elastic and flexible support. The protective component is connected to the air inlet of the filter device, and the clean air exhaust end of the filter device is connected to the bearing component through the connecting pipe B. After the filter device performs negative pressure suction and filtration purification of the cutting dust, it delivers the purified gas to the bearing component and the support structure to form a bearing cloth air cushion and drive the pneumatic lifting and buffering of the bearing component.

[0007] The displacement positioning component includes a rectangular frame with a displacement block slidably mounted therein. Clamping components are connected to both sides of the rectangular frame near the bottom. Each clamping component includes a fixing block with a telescopic cylinder passing through it. One end of the telescopic cylinder has an arc-shaped clamping block. The opposing surfaces of the two arc-shaped clamping blocks are covered with protective rubber. When the telescopic cylinder extends, the two arc-shaped clamping blocks move closer to each other to clamp the graphite rod. During clamping, the protective rubber prevents the opposing surfaces of the arc-shaped clamping blocks from directly contacting the surface of the graphite rod and causing damage to the graphite rod surface.

[0008] The protective assembly includes a protective cover, and a connecting cylinder A is provided on one side of the protective cover. A connecting pipe A is provided on one side of the connecting cylinder A. An anti-sagging suspension device is provided outside the connecting pipe A. The anti-sagging suspension device can be a rope with a certain elasticity, or other structure that can lift the connecting pipe A and has elastic up-and-down movement. The protective cover, the connecting cylinder A and the connecting pipe A are connected on the same central axis, and the connecting cylinder A is located between the protective cover and the connecting pipe A. The end of the connecting pipe A away from the connecting cylinder A is connected to the air inlet of the filter device, wherein the air inlet of the filter device is a negative pressure suction air inlet position. The protective cover is connected to baffles A and B. The output end of the cutting motor passes through baffles A and B. A support plate is connected to the protective cover. Baffle A has a feeding notch and is used for partial shielding, while baffle B is for full shielding. Baffles A and B do not contact each other and form a chip splash guard. The cutting blade in the cutting device is located in the chip splash guard. It should be noted that a part of the protective cover is extended. This extended part is located in the direction of chip ejection from the cutting blade. This extended part can be used to block the chips ejected by the cutting blade. When the chips and dust are thrown upwards and collide in the chip splash guard, on the one hand, the chips and dust can enter the protective cover through the feeding notch when they collide. On the other hand, it also facilitates the entry of chips and dust into the protective cover when the filter device is suctioned, and further promotes the entry of chips and dust into the filter device through the connecting pipe A. Under this dual action, the chips and dust are collected and absorbed to the maximum extent, and splashing and scattering are prevented to the greatest extent.

[0009] The supporting assembly includes a supporting box, and the supporting box is provided with partition A and partition B. Partition A is above partition B. Partition A and partition B are provided with at least two sets of downward flow filtering channels. The downward flow filtering channels include several sets of V-shaped plates arranged on the same axis. Each V-shaped plate is composed of two filter plates B. There is a filter plate A between the two filter plates B in each V-shaped plate. A concave partition guide frame is provided between the two sets of downward flow filtering channels. Ventilation holes are provided through partition A, partition B and partition guide frame. The ventilation holes on partition B are located in the partition guide frame. The ventilation holes on the partition guide frame are on one side and close to the open position. The two sets of downward flow filtering channels and partition guide frame form an airflow channel between partition A and partition B. Figure 10 As shown by the middle arrow, the two sets of downflow filtration channels are conveniently referred to as downflow filtration channel A and downflow filtration channel B. The small opening of the figure-eight plate in downflow filtration channel A faces the connecting pipe B. The figure-eight plates in downflow filtration channel A and downflow filtration channel B are conveniently referred to as figure-eight plate A and figure-eight plate B. In the same set of downflow filtration channels, figure-eight plate A is connected to the top, and the two sides of figure-eight plate A near the large diameter end are not connected to the inner wall of the carrier box and the opposite surface of the partition guide frame. The two sides of figure-eight plate B near the large diameter end are connected to the inner wall of the carrier box and the opposite surface of the partition guide frame. Thus, the figure-eight plates are arranged in a non-contact, contact, non-contact sequence. The arrangement of multiple figure-eight plates A and B in downflow filtration channel B is the opposite of that in downflow filtration channel A. When the airflow passes through the two sets of downflow filtration channels, not only is the flow velocity weakened, but the gas is also filtered. In addition, both the filter plate and the filter screen are mature applications that already exist in the prior art.

[0010] The top of the inner part of the carrier box is equipped with a carrier cloth, which includes a U-shaped frame and an airtight fabric connected to the U-shaped frame. A mounting groove for accommodating the U-shaped frame is provided along the top edge of the carrier box, and a clamping frame is located in the mounting groove and at the top of the U-shaped frame. The carrier cloth and partition A form an air cavity in the carrier box. A vent on partition A communicates with the air cavity, allowing gas in the separator guide frame to enter the air cavity through the vent. The clamping frame is locked in the mounting groove with screws and is used to clamp the U-shaped frame. The mounting groove, the U-shaped frame, and the clamping frame are in contact with a sealing rubber seal to prevent air leakage. This allows gas flowing through the separator guide frame to pass through... The vents allow air to enter the air chamber. When the air chamber is filled with gas, it inflates the airtight fabric. When a heavy object falls onto the inflated airtight fabric, the fabric is pressed back into the bearing box. This airtight fabric supports the cut and lowered graphite rod and also provides stress relief. In addition, when the airtight fabric receives instantaneous downward pressure, the gas in the air chamber is instantly rushed into the partition guide frame through the vents on partition A, further clearing any blockages in the vents on the partition guide frame. Each time a graphite rod is received, the airflow backflushs the vents on partition A and the partition guide frame, further ensuring smooth airflow.

[0011] The carrier box contains a partition C, which is located below partition B. A filter screen is installed in the carrier box between partition C and partition B. A vent hole runs through the top center of partition C. The filter screen is inserted from the outside of the carrier box and secured with screws for easy disassembly and cleaning. The vent hole on partition B connects to the area between partition C and partition B, and also connects to the area between partition C and the bottom of the carrier box. When the airflow enters the downflow filtration channel between partition A and partition B through the connecting pipe B, it can enter not only between partition A and the airtight fabric through the vent hole on partition A, but also between partition B and partition C through the vent hole on partition B. Furthermore, it passes through the filter screen and enters the area between partition C and the bottom of the carrier box through the vent hole on partition C.

[0012] The support structure includes a gas distribution cylinder connected to the bottom of the support box. The support structure also includes four movable components connected to the bottom of the support box. Each movable component includes a support cylinder containing a movable part. Each movable part includes a movable rod with a piston block and a top block at each end. A limiting ring is movably fitted onto the movable rod and connected to the bottom of the support cylinder to prevent the movable rod from being pulled out of the support cylinder. The end of the movable rod with the piston block is inserted into the support cylinder, and the piston block is in frictional contact with the inner wall of the support cylinder. The top block is connected to the bottom of the support box. The gas distribution cylinder connects to the location between the partition C and the bottom of the support box, and a connecting pipe C connects to the outside of the gas distribution cylinder and is connected to the surface of the support cylinder near the bottom. When gas fills the space between the partition C and the bottom of the bearing box, it enters the gas distribution cylinder and then enters the bottom of the support cylinder through the connecting pipe C. As the gas continues to fill, it pushes the piston block upward, causing the movable rod to move upward in the support cylinder. This shortens the distance between the top of the bearing box and the graphite rod and provides another buffer. When the graphite rod falls on the airtight fabric, not only will the airtight fabric be pressed into the bearing box, but the entire bearing box will also move downward. A pressure relief valve is installed on the support cylinder. When the entire bearing box descends slightly due to gravity, the end of the movable rod with the piston block moves downward into the support cylinder. At this time, the piston block also compresses the gas in the support cylinder, and the compressed gas is safely released through the pressure relief valve.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention forms a debris-prevention zone around the cutting device using a protective cover, baffle A, and baffle B. Baffle A partially shields the cutting area, while baffle B shields the other side of the cutting blade. The extended portion of the protective cover is arranged in the direction in which dust and debris are ejected from the cutting blade. The dust and debris generated during cutting first collide with the protective cover and baffles, changing their direction of movement. Then, under the negative pressure suction of the filtration device, they enter the filtration device through the connecting cylinder A and connecting pipe A. This forms a dust collection method that combines collision-guided aggregation with negative pressure suction, reducing the direct outward dispersion of dust and debris across the suction area.

[0014] 2. In this invention, the gas discharged after purification by the filtration device is transported to the bearing component through the connecting pipe B, so that the purified gas after dust treatment is no longer directly discharged, but is used as the pneumatic working medium of the bearing component and support structure. Thus, while realizing the collection and purification of graphite dust, the purified exhaust gas is reused for the formation of the bearing cloth air cushion and the pneumatic lifting of the bearing box, reducing the configuration of independent air supply sources, reducing the complexity of air path layout, and improving the degree of secondary utilization of purified gas.

[0015] 3. This invention utilizes two sets of descending filtration channels and a separating guide frame positioned between partition A and partition B to allow the purified gas entering the carrier box via connecting pipe B to flow along a tortuous path formed between multiple figure-eight plates. The staggered arrangement of filter plates A and B enables the airflow to change direction multiple times and gradually reduce its velocity. The separating guide frame further separates and guides the airflow, thereby simultaneously achieving airflow reduction, pressure equalization, flow diversion, and supplementary filtration. This reduces localized excessive bulging caused by the direct impact of purified gas on the carrier fabric and provides a relatively stable airflow for different aerodynamic buffer zones within the carrier box.

[0016] 4. In this invention, a first buffer air chamber is formed in the upper part of the bearing box by the supporting cloth and the partition A. The purified gas entering the first buffer air chamber supports the airtight body of the supporting cloth upwards. When the cut graphite rod falls onto the supporting cloth, the supporting cloth first disperses the contact load through its own flexible deformation. The gas in the first buffer air chamber is then compressed and generates a reverse supporting force. This forms a first-stage support that combines flexible support and gas compression buffering, avoiding direct impact of the graphite rod on the rigid structure of the bearing box and reducing the risk of secondary collisions on the newly formed end face and the edges after grinding, chamfering or edge trimming.

[0017] 5. In this invention, a purified gas delivery path is formed in the lower part of the carrier box through partition B, filter screen, and partition C. After further filtration, the purified gas enters the lower air chamber below partition C, and then sequentially passes through the gas distribution cylinder and multiple connecting pipes C into the corresponding support cylinder. The gas entering the support cylinder pushes the piston block, movable rod, and top block upward, causing the carrier box to be pneumatically lifted before the graphite rod is cut. This shortens the drop distance between the carrier cloth and the graphite rod to be cut, reducing the time required for the graphite rod to form a large free fall velocity before contacting the carrier cloth.

[0018] 6. When the cut graphite rod falls onto the supporting fabric, in addition to the deformation and buffering of the supporting fabric and the first buffer air chamber, the supporting box can also drive the top block, movable rod, and piston block to move downward under the weight and impact force of the graphite rod, and compress the gas in the support cylinder. The pressurized gas is gradually released through the pressure relief structure on the support cylinder. This forms a second-stage pneumatic buffering that combines the partial sinking of the supporting layout with the overall slow descent of the supporting box, further prolonging the release process of the impact load and reducing the bouncing, rolling, and secondary collision with the side wall of the supporting box after the graphite rod falls.

[0019] 7. In this invention, when the graphite rod compresses the supporting fabric downwards, the gas in the first buffer air chamber can enter the separating guide frame and the corresponding airflow channel in the opposite direction through the vent on partition A, converting part of the impact energy generated by the falling graphite rod into a reverse pulse airflow. This reverse pulse airflow can backflush the vents on partition A and the separating guide frame, which helps to dislodge small particles attached to or blocking the vents, allowing the receiving action to simultaneously generate a self-clearing effect on the airflow channel, maintaining the smoothness of subsequent purified gas delivery and supporting fabric inflation processes.

[0020] 8. This invention achieves continuous linkage between the filtration device, the carrier component, and the support structure. The filtration device draws in and purifies the cutting dust. After the purified gas is decelerated and distributed through the downflow filtration channel inside the carrier component, part of it is used to support the carrier cloth to form an upper air cushion, and the other part is used to drive the movable component to lift the carrier box to a position close to the graphite rod to be cut. After the graphite rod falls, the upper air cushion, the carrier cloth, and the movable component respectively perform local buffering and overall slow descent. At the same time, the reverse airflow generated by the pressure on the carrier cloth clears the internal ventilation holes, thereby achieving synergistic benefits of dust purification, clean gas reuse, reduced independent air supply, shortened drop distance, flexible support, pneumatic slow descent, and self-clearing of the air path. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the protective component and the displacement positioning component in this invention; Figure 2 for Figure 1 A structural breakdown diagram; Figure 3 for Figure 2 A schematic diagram showing the upward view of the middle baffle A and baffle B inside the protective cover; Figure 4 for Figure 3 A schematic diagram showing the exposed baffle A after baffle B is removed from the protective cover; Figure 5 for Figure 4 A schematic diagram showing the separation of baffle A from the protective cover; Figure 6 This is a schematic diagram of the graphite rod falling into the support cloth in the support assembly in this invention; Figure 7 for Figure 6 A breakdown diagram of the supporting fabric and the supporting box; Figure 8 for Figure 7 Layout diagram of the partition A and the load-bearing box; Figure 9 for Figure 8 Layout diagram of the central partition B and its top structure with the load-bearing box; Figure 10 for Figure 9 Partial sectional view of the middle bearing box; Figure 11 for Figure 10 A structural breakdown diagram of the active components in the middle; Figure 12 This is a gas path diagram showing the purified gas output from the filtration device in this invention entering the carrier component and being diverted and reused. Figure 13 This is a plan view of the overall structure of the present invention in the frontal view.

[0022] In the diagram: 1. Protective component; 11. Protective cover; 111. Connecting cylinder A; 112. Connecting pipe A; 12. Baffle A; 13. Baffle B; 14. Support plate; 2. Displacement positioning component; 21. Rectangular frame; 22. Displacement block; 23. Clamping component; 3. Cutting device; 4. Filtering device; 41. Connecting pipe B; 5. Bearing component; 51. Bearing box; 52. Bearing cloth; 521. Pressing frame; 53. Partition A; 54. Partition B; 55. Filter plate B; 56. Filter plate A; 57. Separating guide frame; 58. Filter screen; 59. Partition C; 6. Support structure; 61. Air distribution cylinder; 62. Connecting pipe C; 63. Movable component; 631. Support cylinder; 6311. Limiting ring; 632. Movable part; 6321. Piston block; 6322. Movable rod; 6323. Top block; 7. Lateral displacement device. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments; any equivalent substitutions, structural adjustments or combination changes made by those skilled in the art based on these embodiments without departing from the concept of the present invention should fall within the protection scope of the present invention.

[0024] In the description of this invention, the terms "upper," "lower," "top," "bottom," "inner," "outer," "lateral," and "vertical," etc., indicating directions or positional relationships, are based on the directions shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not imply or suggest that the relevant components must be set or operated in a specific orientation. Unless otherwise expressly defined, the terms "connection," "setting," "installation," and "communication," etc., should be interpreted broadly, and can refer to fixed connections, detachable connections, or integrally formed connections, as well as direct communication or indirect communication through intermediate components.

[0025] Reference Figures 1 to 13 This embodiment discloses a graphite round rod anti-chipping processing device, including an equipment support structure, a protective component 1, a displacement positioning component 2, a cutting device 3, a filtering device 4, a bearing component 5, a support structure 6, and a lateral displacement device 7.

[0026] The equipment support structure is used to install and support the above-mentioned components. The equipment support structure includes a horizontal plate A, a horizontal plate B, and a vertical plate. The horizontal plate A and the horizontal plate B are respectively connected to the top and bottom of the vertical plate, thereby forming a main frame with an upper installation area, a middle processing area, and a lower receiving area. A graphite rod conveying structure is connected to the vertical plate. The graphite rod conveying structure is used to convey the graphite rods to be processed along a predetermined conveying direction. In this embodiment, the graphite rod conveying structure may include conveying rollers arranged vertically opposite each other. The graphite rods are sandwiched between the upper and lower conveying rollers and move axially when the conveying rollers rotate. In other embodiments, a conveyor belt, a roller group, or a rod conveying mechanism with the same conveying effect may also be used.

[0027] The vertical plate is also equipped with an installation plate, on which an auxiliary positioning structure that cooperates with the clamping component 23 can be installed to position and support the graphite rod on both sides of the position to be cut, so as to reduce the graphite rod from shifting or vibrating during the cutting process.

[0028] The transverse displacement device 7 is installed on the transverse plate A and is used to drive the cutting device 3 and the displacement positioning component 2 to move along the axial direction of the graphite round bar. The transverse displacement device 7 includes an I-shaped moving block, a displacement motor and a gear. The transverse plate A has a moving opening that cooperates with the I-shaped moving block, and the I-shaped moving block is slidably installed in the moving opening.

[0029] The displacement motor is connected to the I-shaped moving block. The output end of the displacement motor is connected to a gear. The gear passes through the I-shaped moving block and meshes with the toothed structure set on the transverse plate A. When the displacement motor drives the gear to rotate, the gear interacts with the toothed structure on the transverse plate A, causing the I-shaped moving block to move laterally along the moving opening, thereby changing the axial position of the cutting device 3 and the displacement positioning component 2 relative to the graphite round bar to adapt to different fixed-length cutting positions.

[0030] The cutting device 3 is located below the I-shaped moving block. The cutting device 3 includes a cutting motor and a cutting blade connected to the output end of the cutting motor. The cutting motor is installed at the telescopic end of the telescopic cylinder, which is connected to the bottom of the I-shaped moving block. When the telescopic cylinder extends, it drives the cutting motor and the cutting blade to move closer to the graphite rod. The cutting motor drives the cutting blade to rotate to cut the positioned graphite rod. When the telescopic cylinder retracts, the cutting blade leaves the graphite rod so that the next lateral position adjustment or graphite rod conveying can be performed.

[0031] Reference Figure 1 and Figure 2 The displacement positioning component 2 is connected to the bottom of the horizontal displacement device 7 and is connected to the protective component 1. The displacement positioning component 2 is used to move the protective component 1 synchronously when the horizontal displacement device 7 moves the cutting device 3, and at the same time allows the protective component 1 to be vertically adjusted relative to the horizontal displacement device 7.

[0032] The displacement positioning component 2 includes a rectangular frame 21, a displacement block 22, and a clamping member 23. The rectangular frame 21 is connected to the bottom of the I-shaped moving block of the transverse displacement device 7. The displacement block 22 is slidably disposed in the rectangular frame 21. The protective component 1 is connected to the displacement block 22, allowing the protective component 1 to move vertically along the rectangular frame 21 with the displacement block 22. With this arrangement, when the cutting device 3 feeds downward, the protective component 1 can synchronously approach the cutting position of the graphite rod, ensuring that the protective component 1 is always positioned around the cutting area.

[0033] Clamping components 23 are respectively provided on both sides of the rectangular frame 21 near the bottom. The clamping component 23 includes a fixed block, a telescopic cylinder and an arc-shaped clamping block. The fixed block is connected to the rectangular frame 21. The telescopic cylinder passes through or is installed on the fixed block. The arc-shaped clamping block is connected to the end of the telescopic cylinder facing the graphite rod. The arc-shaped clamping blocks of the two clamping components 23 are arranged opposite to each other. When the two telescopic cylinders extend synchronously, the two arc-shaped clamping blocks approach each other and clamp the two sides of the graphite rod at the cutting position.

[0034] The surface of the arc-shaped clamping block that contacts the graphite rod is provided with protective rubber. The protective rubber can increase the friction between the arc-shaped clamping block and the graphite rod, while preventing the rigid surface of the arc-shaped clamping block from directly pressing the graphite rod and causing surface indentations or local damage.

[0035] Reference Figures 1 to 5 The protective component 1 includes a protective cover 11, a connecting cylinder A111, a connecting pipe A112, a baffle A12, a baffle B13, and a support plate 14.

[0036] The protective cover 11 is an arc-shaped or cylindrical cover with an internal accommodating space. The protective cover 11 is located outside the cutting blade of the cutting device 3 and moves with the displacement positioning component 2. The protective cover 11 has an extended portion facing the direction in which the dust and debris are thrown out by the cutting blade. This extended portion increases the blocking area of ​​the dust and debris along the tangential movement direction of the cutting blade, so that the graphite dust and particulate debris thrown out at high speed can preferentially impact the inner wall of the protective cover 11 instead of directly passing over the protective cover 11 and flying outward.

[0037] One side of the protective cover 11 is connected to the connecting cylinder A111, and the end of the connecting cylinder A111 away from the protective cover 11 is connected to the connecting pipe A112. The protective cover 11, the connecting cylinder A111 and the connecting pipe A112 are connected in sequence, and the end of the connecting pipe A112 away from the connecting cylinder A111 is connected to the negative pressure air inlet of the filter device 4.

[0038] An anti-sagging suspension device can be installed on the outside of the connecting pipe A112. One end of the anti-sagging suspension device is connected to the equipment support structure, and the other end is connected to the connecting pipe A112. The anti-sagging suspension device can be made of elastic rope, spring strap, or other structure that can provide flexible suspension when the connecting pipe A112 moves with the protective component 1, so as to reduce the pulling of the connecting pipe A112 itself on the protective cover 11 and the displacement positioning component 2.

[0039] Inside the protective cover 11 are baffles A12 and B13, which are spaced apart along the axial direction of the cutting blade and do not contact each other, forming a chip-prevention zone. The cutting blade of the cutting device 3 is at least partially located in the chip-prevention zone.

[0040] Baffle A12 has a feed notch, through which the graphite rod can enter the cutting debris anti-splash position. While allowing the graphite rod to pass through, baffle A12 partially blocks one side of the cutting area. Baffle B13 is located on the other side of the cutting blade and forms a full-blocking structure to block dust and debris that crosses the side of the cutting blade. The output end of the cutting motor or the cutting blade mounting shaft passes through the corresponding shaft holes in baffle A12 and baffle B13.

[0041] A support plate 14 is provided on the protective cover 11. The support plate 14 can be used to support the cutting motor, related lines or auxiliary structures of the protective cover 11, and can also be used as a temporary support component during maintenance or disassembly.

[0042] When the cutting blade cuts the graphite rod, it throws dust and debris out along the rotational tangential direction. The dust and debris are first blocked by baffles A12 and B13 and the extended part of the protective cover 11, and change direction of motion after impact. Some of the dust and debris enters the interior of the protective cover 11 through the feed notch on baffle A12 during the impact and rebound process, while the other part of the dust and debris is sucked into the protective cover 11 under the negative pressure generated by the filter device 4. The dust-laden airflow entering the protective cover 11 enters the filter device 4 through the connecting cylinder A111 and the connecting pipe A112 in sequence, thus forming a dust collection path that combines collision-guided aggregation and negative pressure suction.

[0043] The filter device 4 can be a filter that can separate and filter graphite dust and particulate debris and output purified gas. The filter device 4 includes a negative pressure inlet and a clean gas outlet. The negative pressure inlet is connected to the connecting pipe A112, and the clean gas outlet is connected to the connecting pipe B41. When the filter device 4 is running, it creates a negative pressure suction inside the protective cover 11 through the connecting pipe A112, and at the same time, it transports the filtered purified gas to the bearing component 5 through the connecting pipe B41.

[0044] In this embodiment, the filter device 4 is not only used to filter and purify the dust-laden airflow drawn in by the protective cover 11, but also serves as the gas source for the bearing component 5 and the support structure 6. The clean gas exhaust end of the filter device 4 is connected to the connecting pipe B41, so that the purified gas enters the first buffer air chamber and the lower air chamber along the airflow channel inside the bearing box 51, thereby converting the purified exhaust generated in the dust treatment process into a pneumatic working medium that supports the buffer process.

[0045] Reference Figures 6 to 10 as well as Figure 12 The bearing assembly 5 is located below the material drop path after the graphite round rod is cut. The bearing assembly 5 includes a bearing box 51, a bearing cloth 52, a pressing frame 521, a partition A53, a partition B54, a filter plate B55, a filter plate A56, a separating guide frame 57, a filter screen 58, and a partition C59.

[0046] The carrier box 51 is a box structure with an open top. The top of the carrier box 51 is used to install the carrier cloth 52. The interior of the carrier box 51 is divided from top to bottom by partitions A53, B54 and C59 to form different airflow areas and buffer areas.

[0047] One end of the connecting pipe B41 is connected to the clean gas exhaust end of the filter device 4, and the other end is connected to the area of ​​the carrier box 51 located between the partition A53 and the partition B54. The purified gas output from the filter device 4 enters the area between the partition A53 and the partition B54 through the connecting pipe B41.

[0048] Partition A53 is located above partition B54. Both partition A53 and partition B54 are provided with ventilation holes. At least two sets of downflow filter channels are provided between partition A53 and partition B54. A separator guide frame 57 is provided between the two sets of downflow filter channels.

[0049] Each set of descending flow filtration channels includes multiple figure-eight shaped plates spaced apart along the airflow direction. Each figure-eight shaped plate consists of two filter plates B55, which are arranged at an angle to form a small opening and a large opening. A filter plate A56 is placed between the two filter plates B55, so that the airflow can be supplemented by passing through either filter plate A56 or filter plate B55 as it passes through the figure-eight shaped plates.

[0050] For ease of explanation, the two sets of downflow filtration channels are referred to as downflow filtration channel A and downflow filtration channel B, respectively. The figure-eight plates in the same downflow filtration channel are referred to as figure-eight plate A and figure-eight plate B, respectively. The small end of the figure-eight plate in downflow filtration channel A faces the connecting pipe B41, so that the purified gas entering from the connecting pipe B41 first enters the small end of the figure-eight plate and flows along the gradually expanding flow cross section.

[0051] In the downflow filtration channel A, the figure-eight plate A can be connected to the partition B54, and the two sides of the figure-eight plate A near the large opening end form a gap between the inner wall of the carrier box 51 and the opposite side of the partition guide frame 57, respectively; the two sides of the figure-eight plate B near the large opening end are connected to the inner wall of the carrier box 51 and the opposite side of the partition guide frame 57, respectively. The figure-eight plates A and B are arranged alternately in a manner of not connecting on both sides, connecting on both sides, and not connecting on both sides, so that the airflow cannot pass directly along a straight path, but needs to change direction repeatedly between multiple figure-eight plates.

[0052] The arrangement direction of the figure-eight plates A and B in the downflow filtration channel B is opposite to that of the downflow filtration channel A. This causes the airflow to turn after passing through the dividing guide frame 57 and enter the downflow filtration channel B. The airflow then flows along a tortuous path again. Through the continuous guidance of the two sets of downflow filtration channels, the flow rate of the purified gas gradually decreases and the airflow pressure tends to be uniform. At the same time, the remaining fine particles can be further intercepted by the filter plate A56 and the filter plate B55.

[0053] The partition guide frame 57 has a concave structure and is set between two sets of downward flow filtration channels. The vent on the partition B54 is located in the area enclosed by the partition guide frame 57. The vent on the partition guide frame 57 is set on one side and close to the open position. The partition A53, partition B54 and the vent on the partition guide frame 57 together form a purified gas distribution path, so that the purified gas passing through the downward flow filtration channel can flow to the upper and lower parts of the carrier box 51 respectively.

[0054] The support cloth 52 is set on the top of the support box 51. The support cloth 52 includes a spiral frame and an airtight cloth body connected to the inside of the spiral frame. The top edge of the support box 51 has an installation groove, the spiral frame is embedded in the installation groove, and the clamping frame 521 is set above the spiral frame and connected to the support box 51 by screws.

[0055] Sealing rubber is provided between the mounting groove, the U-shaped frame and the clamping frame 521 to improve the airtightness between the edge of the support cloth 52 and the support box 51, and to prevent the purified gas from leaking from the edge of the support cloth 52.

[0056] A first buffer air chamber is formed between the supporting cloth 52 and the partition A53. The vent on the partition A53 is connected to the first buffer air chamber. Part of the purified gas entering the partition guide frame 57 enters the first buffer air chamber through the vent on the partition A53, and bulges the airtight cloth over the supporting box 51, so that the supporting cloth 52 forms a flexible bearing state with gas support before the graphite rod is cut.

[0057] like Figure 6As shown, after the graphite rod is cut, the cut rod segment is placed on the bearing cloth 52. The airtight fabric of the bearing cloth 52 first deforms downward and covers part of the outer periphery of the cut rod segment to disperse the contact load between the graphite rod and the bearing structure. At the same time, the purified gas in the first buffer air chamber is compressed and generates an upward reverse support force on the bearing cloth 52, thereby forming a first-stage buffer with the joint participation of flexible bearing and gas compression, avoiding the cut rod segment from directly impacting the rigid wall of the bearing box 51.

[0058] When the bearing cloth 52 is subjected to instantaneous downward pressure, some of the gas in the first buffer air chamber can be reversed through the vent on the partition A53 and rushed into the separating guide frame 57 and the corresponding airflow channel. The reverse flow of gas forms a pulse airflow, which backflushes the vent on the partition A53 and the separating guide frame 57, which helps to dislodge the fine particles attached to or blocked at the vent, thereby generating a certain airflow self-clearing effect at the same time as each receiving action.

[0059] The partition C59 is located below the partition B54, and the filter screen 58 is located between the partition B54 and the partition C59. The filter screen 58 can be inserted between the partition B54 and the partition C59 from the outside of the carrier box 51 through the insertion interface and fixed by screws or locking devices so that the filter screen 58 can be pulled out for cleaning or replacement after a period of use.

[0060] The vent on partition B54 communicates with the area between partition B54 and partition C59. Partition C59 has a vent that communicates with the lower air chamber below partition C59. Purified gas entering between partitions A53 and B54 through connecting pipe B41 passes through partition A53 into the first buffer air chamber, while the remaining gas passes through the vent on partition B54 into the area between partitions B54 and C59. After being filtered by filter screen 58, the gas then passes through the vent on partition C59 into the lower air chamber.

[0061] Through the above-mentioned diversion structure, the purified gas discharged from the filter device 4 can be used to support the bearing cloth 52 and drive the support structure 6 at the same time. Before entering the support structure 6, it needs to be filtered again by the filter screen 58, thereby reducing the number of particles entering the moving component 63 and affecting the piston movement.

[0062] Reference Figure 10 and Figure 11 The support structure 6 is set at the bottom of the bearing box 51, including an air distribution cylinder 61, multiple connecting pipes C62 and multiple movable components 63. In this embodiment, four movable components 63 are set at the bottom of the bearing box 51. The four movable components 63 are arranged close to the four corners of the bottom of the bearing box 51 to form a stable support for the bearing box 51. The number of movable components 63 can also be adjusted according to the size of the bearing box 51 and the load requirements.

[0063] The gas distributor 61 is connected to the bottom of the carrier box 51 and communicates with the lower air chamber below the partition C59. Multiple connecting pipes C62 are connected to the outer periphery of the gas distributor 61. Each connecting pipe C62 is connected to a movable component 63 to evenly distribute the purified gas in the lower air chamber to the multiple movable components 63.

[0064] The movable component 63 includes a support cylinder 631, a limiting ring 6311, and a movable part 632. The support cylinder 631 is arranged vertically, and its bottom is connected to the equipment support structure or supports the ground. A gas working chamber is formed inside the support cylinder 631. A connecting pipe C62 is connected to the support cylinder 631 near the bottom and communicates with the gas working chamber.

[0065] The movable component 632 includes a piston block 6321, a movable rod 6322, and a top block 6323. The piston block 6321 and the top block 6323 are respectively connected to the two ends of the movable rod 6322. One end of the movable rod 6322 connected to the piston block 6321 is inserted into the support cylinder 631. The outer periphery of the piston block 6321 slides and seals or rubs against the inner wall of the support cylinder 631. The top block 6323 is connected to the bottom of the bearing box 51.

[0066] The limiting ring 6311 is sleeved on the outside of the movable rod 6322 and connected to the upper part or opening of the support cylinder 631. The limiting ring 6311 limits the movement direction of the movable rod 6322 and prevents the piston block 6321 and the movable rod 6322 from being completely pulled out of the support cylinder 631.

[0067] When the purified gas enters the lower air chamber below the partition C59, the gas enters the gas distribution cylinder 61 and enters the bottom of the corresponding support cylinder 631 through multiple connecting pipes C62. As the gas pressure inside the support cylinder 631 increases, the gas pushes the piston block 6321 to move upward. The piston block 6321 pushes the bearing box 51 upward through the movable rod 6322 and the top block 6323, so that the bearing cloth 52 at the top of the bearing box 51 is close to the graphite round bar to be cut, thereby shortening the vertical distance between the bearing cloth 52 and the bar segment to be cut before the cutting is completed.

[0068] A pressure relief structure is provided on the support cylinder 631. The pressure relief structure can be a pressure-opening pressure relief valve or a throttling pressure relief hole with a predetermined flow capacity. When the cut bar segment falls onto the support cloth 52, the weight of the bar segment and the impact of falling will first deform the support cloth 52 downward, and at the same time, it will also cause the support box 51 to move downward as a whole. The support box 51 will move downward into the support cylinder 631 through the top block 6323, driving the movable rod 6322 and the piston block 6321. This will compress the gas in the support cylinder 631, and the compressed gas will be gradually discharged through the pressure relief structure, thereby limiting the descent speed of the support box 51 and absorbing part of the impact energy.

[0069] Therefore, this embodiment forms a two-stage buffering process when the graphite rod is cut down: the first stage is completed by the flexible deformation of the bearing cloth 52 and the compression of the gas in the first buffer air chamber, which mainly reduces the local impact when the graphite rod first contacts the bearing structure; the second stage is completed by the overall descent of the bearing box 51, the downward movement of the moving part 632, and the pressure release of the gas in the support cylinder 631, which mainly prolongs the release time of the impact load and suppresses the bouncing and rolling of the graphite rod after contact.

[0070] Work process When using this device, the graphite rod to be cut is first transported to the predetermined cutting position through the graphite rod conveying structure. The transverse displacement device 7 drives the cutting device 3, the displacement positioning component 2 and the protective component 1 to move along the transverse plate A according to the set cutting length, so that the cutting blade is aligned with the predetermined cutting position of the graphite rod. The telescopic cylinders of the two clamping parts 23 extend, causing the two arc-shaped clamping blocks to come closer to each other and clamp the graphite rod. The auxiliary positioning structure on the mounting plate can simultaneously support the graphite rod to improve the stability of the cutting position. After the filter device 4 is started, it performs negative pressure suction on the inside of the protective cover 11 through the connecting pipe A112 and the connecting cylinder A111; at the same time, the gas purified by the filter device 4 enters the carrier box 51 through the connecting pipe B41, and is slowed down and diverted by the action of the downflow filtration channel and the dividing guide frame 57. Part of the purified gas enters the first buffer air chamber through the vent on the partition A53, causing the supporting cloth 52 to bulge upwards; another part of the purified gas enters the lower air chamber through the partition B54, filter screen 58 and partition C59, and then enters each support cylinder 631 through the air distribution cylinder 61 and connecting pipe C62, pushing the movable part 632 to move upwards and lift the supporting box 51, so that the supporting cloth 52 is close to the bar segment to be cut. Subsequently, the telescopic cylinder drives the cutting device 3 to descend, the cutting motor drives the cutting blade to rotate and cut the graphite rod. The dust and debris generated during cutting are blocked by the baffle A12, baffle B13 and protective cover 11 and change their direction of movement. Under the action of negative pressure, they enter the filter device 4 through the connecting cylinder A111 and the connecting pipe A112 to reduce the diffusion of dust and debris to the outside of the processing area. After the graphite rod is cut, the cut rod segment falls onto the already bulging support cloth 52 with a small drop distance. The support cloth 52 deforms downward and compresses the gas in the first buffer air chamber, providing flexible support for the rod segment. At the same time, the support box 51 descends slowly downward under the weight of the rod segment and the impact. The moving part 632 compresses the gas in the support cylinder 631. The pressurized gas is gradually discharged through the pressure relief structure, thereby further absorbing the impact and reducing the possibility of the rod segment bouncing, rolling or hitting the inner wall of the support box 51. When the supporting fabric 52 deforms downwards, some of the gas in the first buffer air chamber reverses and enters the partition guide frame 57 and the downflow filter channel through the vent on the partition A53, generating a backflow and unblocking effect on the corresponding vent. After the receiving is completed, the cut rod segment can be removed; as the load is released and the filter device 4 continues to output purified gas, each moving component 63 pushes the supporting box 51 back to its original position, and the supporting fabric 52 also re-forms a bulging, ready-to-receive state for the next cutting and receiving; Through the above working process, this device links the dust collection generated during the cutting of graphite rods with the buffering and receiving of the cut rod segments: the purified gas output by the filter device 4 after dust purification is partly used to form an air cushion buffer under the bearing cloth 52, and the other part is used to lift and pneumatically support the bearing box 51; after the cut rod segments fall, the local flexible deformation of the bearing cloth 52 and the overall slow descent of the bearing box 51 jointly absorb the impact. At the same time, the reverse airflow generated by the pressure on the bearing cloth 52 can also clear the internal ventilation holes, thereby reducing the risk of secondary edge breakage of the graphite rod segments due to impact, bouncing and rolling during the material receiving process.

[0071] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

[0072] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

Claims

1. A graphite round rod anti-chipping processing device, comprising an equipment support structure and a filtering device (4), wherein the equipment support structure has a lateral displacement device (7) and a cutting device (3) is located below the lateral displacement device (7), characterized in that, The bottom of the transverse displacement device (7) is connected to the displacement positioning component (2), the displacement positioning component (2) is connected to the protective component (1), the transverse plate A is provided with the bearing component (5), the bearing component (5) is used to support and protect the cut graphite rod, and the bottom of the bearing component (5) is provided with the support structure (6). The protective component (1) is connected to the air inlet of the filter device (4). The clean air exhaust end of the filter device (4) is connected to the bearing component (5) through the connecting pipe B (41). After the filter device (4) performs negative pressure suction and filtration purification on the cutting dust, the purified gas is delivered to the bearing component (5) and the support structure (6) to form a bearing cloth air cushion and drive the pneumatic lifting and buffering of the bearing component (5).

2. The anti-chipping processing device for graphite round bars according to claim 1, characterized in that, The displacement positioning component (2) includes a rectangular frame (21), in which a displacement block (22) is slidably provided, and clamping members (23) are connected to both sides of the rectangular frame (21) near the bottom. The clamping member (23) includes a fixing block, in which a telescopic cylinder passes through, and at one end of the telescopic cylinder is an arc-shaped clamping block. The opposing surfaces of the two arc-shaped clamping blocks are covered with protective rubber.

3. The anti-chipping processing device for graphite round bars according to claim 1, characterized in that, The protective assembly (1) includes a protective cover (11), and a connecting cylinder A (111) is provided on one side of the protective cover (11), and a connecting pipe A (112) is provided on one side of the connecting cylinder A (111). The protective cover (11), the connecting cylinder A (111) and the connecting pipe A (112) are connected on the same central axis, and the connecting cylinder A (111) is located between the protective cover (11) and the connecting pipe A (112). The end of the connecting pipe A (112) away from the connecting cylinder A (111) is connected to the air inlet of the filter device (4).

4. The anti-chipping processing device for graphite round bars according to claim 3, characterized in that, The protective cover (11) is connected to a baffle A (12) and a baffle B (13), and a support plate (14) is connected to the protective cover (11). A feeding notch is provided on the baffle A (12) for partial blocking, and the baffle B (13) is for full blocking. The baffle A (12) and the baffle B (13) do not contact each other and form a cutting chip anti-splash position. The cutting blade in the cutting device (3) is located in the cutting chip anti-splash position. A part of the protective cover (11) is extended, and the extended part is located in the direction in which the cutting blade throws out the chips.

5. The anti-chipping processing device for graphite round bars according to claim 1, characterized in that, The carrier assembly (5) includes a carrier box (51), and the carrier box (51) is provided with a partition A (53) and a partition B (54). The partition A (53) is above the partition B (54). At least two sets of downflow filtration channels are provided on the partition A (53) and the partition B (54). The downflow filtration channels include several sets of figure-eight plates arranged on the same axis. The figure-eight plates are composed of two filter plates B (55). There is a filter plate A (56) between the two filter plates B (55) in each figure-eight plate.

6. The anti-chipping processing device for graphite round bars according to claim 5, characterized in that, A concave partition guide frame (57) is provided between the two sets of downflow filter channels. Ventilation holes are provided through the partition A (53), partition B (54) and partition guide frame (57). The ventilation hole on partition B (54) is located in the partition guide frame (57). The ventilation hole on the partition guide frame (57) is on one side and close to the open position. The two sets of downflow filter channels and partition guide frame (57) form an airflow channel between partition A (53) and partition B (54).

7. The anti-chipping processing device for graphite round bars according to claim 5, characterized in that, The top of the inside of the carrier box (51) is provided with a carrier cloth (52). The carrier cloth (52) includes a spiral frame and an airtight cloth connected to the spiral frame. The top edge of the carrier box (51) is provided with an installation groove for placing the spiral frame. There is a pressing frame (521) in the installation groove and located at the top of the spiral frame. The carrier cloth (52) and the partition A (53) form an air cavity in the carrier box (51). The ventilation hole on the partition A (53) is connected to the air cavity.

8. The anti-chipping processing device for graphite round bars according to claim 5, characterized in that, The carrier box (51) contains a partition C (59), which is located below the partition B (54). The carrier box (51) is equipped with a filter screen (58) located between the partition C (59) and the partition B (54). A vent hole is also provided in the middle of the top of the partition C (59). The vent hole on the partition B (54) is connected to the position between the partition C (59) and the partition B (54). The vent hole on the partition C (59) is connected to the position between the partition C (59) and the bottom of the carrier box (51).

9. The anti-chipping processing device for graphite round bars according to claim 1, characterized in that, The support structure (6) includes a gas distribution cylinder (61) connected to the bottom of the carrier box (51). The support structure (6) also includes four movable components (63) connected to the bottom of the carrier box (51). Each movable component (63) includes a support cylinder (631) and a movable part (632) inside the support cylinder (631). The movable part (632) includes a movable rod (6322), and the two ends of the movable rod (6322) have a piston block (6321) and a top block (6323) respectively. The upper movable sleeve is equipped with a limiting ring (6311), which is connected to the bottom of the support cylinder (631). The end of the movable rod (6322) with the piston block (6321) is inserted into the support cylinder (631). The top block (6323) is connected to the bottom of the carrier box (51). The air distribution cylinder (61) is connected to the position between the partition plate C (59) and the bottom of the carrier box (51). The air distribution cylinder (61) is connected to the outside of the connecting pipe C (62) and is connected to the position near the bottom of the surface of the support cylinder (631).

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