Roots blower impeller planing device and method

Abstract

The present invention belongs to the technical field of planing processing equipment, and in particular to a Roots blower impeller planing device and method. The present invention aims at the shortcomings of the prior art that when processing the Roots blower impeller, the impeller is easily displaced and cannot be automatically adjusted, and waste chips cannot be collected during the planing of the impeller. The planing device comprises a mounting frame, and columns are fixedly mounted at the four corners of the bottom of the mounting frame. The four columns are fixedly connected to the same support plate. The present invention can stably position the impeller body, thereby preventing the impeller body from being displaced during the planing process. At the same time, when planing the impeller body, the position of the impeller body can be conveniently replaced, so that good convenience can be provided when planing the impeller body, and waste chips generated can be collected when planing the impeller body, so it has good convenience.

Description

Technical Field

[0001] The invention relates to the technical field of planing processing equipment, and in particular to a Roots blower impeller planing device and method. Background Art

[0002] Roots blower is a positive displacement blower, with impeller end face, front and rear end covers of the blower. The principle is to use two blade-shaped rotors to make relative motion in the cylinder to compress and transport gas. This blower has a simple structure and is easy to manufacture. It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transportation, and is more suitable for gas transportation and pressurization systems in low-pressure occasions. It can also be used as a vacuum pump, etc.

[0003] During the processing of the impeller of the Roots blower, the end face of the impeller needs to be planed to keep the end face of the impeller flat. However, there are still the following deficiencies when planing the blades:

[0004] At present, when processing the impeller, the impeller needs to be clamped and positioned. However, in the process of clamping the impeller, the position of the impeller is often offset, which easily leads to errors in processing accuracy when the impeller is planed.

[0005] When planing the impeller, the impeller needs to be adjusted manually, which makes the processing more troublesome;

[0006] When the impeller is planed, the waste chips cannot be collected, resulting in the waste chips being scattered around the planing machine.

[0007] In view of the above problems, the present invention document proposes a Roots blower impeller planing device and method. Summary of the invention

[0008] The present invention provides a Roots blower impeller planing device and method, which solves the shortcomings of the prior art that when processing the Roots blower impeller, the impeller is easily offset and cannot be automatically adjusted, and waste chips cannot be collected during the impeller planing process.

[0009] The present invention provides the following technical solutions:

[0010] A Roots blower impeller planing device comprises a mounting frame, wherein columns are fixedly mounted at the four corners of the bottom of the mounting frame, a same support plate is fixedly connected to the four columns, a support frame is fixedly mounted inside the mounting frame, a fixing frame is fixedly mounted on the top of the mounting frame, an L-shaped frame is fixedly mounted on one side of the fixing frame, the bottom of the L-shaped frame is fixedly connected to one side of the top of the mounting frame, and a sliding hole is opened on the L-shaped frame. The planing device also comprises:

[0011] The collecting mechanism is installed on the top of the supporting plate and is connected to four columns respectively;

[0012] A supporting mechanism, the supporting mechanism passes through the supporting frame and is connected to the supporting frame, the impeller body is clamped on the supporting mechanism, and the top of the supporting mechanism extends to the top of the L-shaped frame and is connected to the top of the L-shaped frame;

[0013] The positioning mechanism is installed on the top of the mounting frame, the positioning mechanism is connected to the supporting frame, the positioning mechanism is clamped with the supporting mechanism, and the positioning mechanism is used to clamp and position the impeller body;

[0014] The planing mechanism is installed on the inner wall of one side of the L-shaped frame, the planing mechanism is connected to the positioning mechanism, the top of the planing mechanism passes through the sliding hole and extends to the top of the L-shaped frame, one side of the planing mechanism extends to the outside of the L-shaped frame and is connected to one side of the L-shaped frame, and the planing mechanism is used to plan the end face of the impeller body.

[0015] In one possible design, the collection mechanism includes a collection box placed on the top of the pallet, with slide bars fixedly installed on both sides of the collection box, guide rails slidably connected to the slide bars, and the guide rails are fixedly connected to one side of the corresponding two columns, and a locking assembly is installed on one side of the collection box, which is connected to one side of the pallet.

[0016] In a possible design, the locking assembly includes a positioning ring fixedly mounted on one side of the support plate, a limiting plate fixedly mounted on one side of the collection box, a positioning frame slidably connected to the limiting plate, the positioning frame is plugged into the positioning ring, a support rod slidably connected through the positioning frame, the top and bottom ends of the support rod are respectively fixedly connected to one side of the collection box and the top of the limiting plate, a second compression spring located above the positioning frame is sleeved on the support rod, and the top and bottom ends of the second compression spring are respectively fixedly connected to the top of the support rod and the top of the positioning frame.

[0017] In one possible design, the supporting mechanism includes a positioning cover that passes through the support frame and is rotatably connected to the support frame. A clamping plate is movably mounted in the positioning cover. The top of the clamping plate extends to the top of the positioning cover and is fixedly mounted with a mold frame. The impeller body is clamped in the mold frame. A transmission assembly is installed on the top of the L-shaped frame. The bottom of the transmission assembly extends to the bottom of the support frame and is connected to the bottom of the positioning cover.

[0018] In a possible design, the transmission assembly includes a stepper motor fixedly mounted on one side of the top of the L-shaped frame, a driving bevel gear fixedly mounted on the output shaft of the stepper motor, a transmission shaft is rotatably connected through the top inner wall of the L-shaped frame, a driven bevel gear located above the L-shaped frame is fixedly sleeved on the transmission shaft, the driving bevel gear is meshed with the driven bevel gear, a driving gear is fixedly mounted on the bottom end of the transmission shaft, a driven gear is fixedly mounted on the bottom end of the positioning cover, and the driving gear is meshed with the driven gear.

[0019] In a possible design, the positioning mechanism includes a first cylinder fixedly mounted on the top of the mounting frame, the first cylinder is connected to an external air source pipeline, a U-shaped frame is fixedly mounted on the piston rod of the first cylinder, the U-shaped frame is clamped with the mold frame, two slides are symmetrically fixedly mounted on the bottom of the U-shaped frame, and two limit rails are symmetrically fixedly mounted on the support frame, the bottom of the slide extends into the corresponding limit rail and is slidably connected to the inner wall of the limit rail, limit frames are fixedly mounted on both sides of the U-shaped frame, and limit rods are slidably connected to the limit frames, and the two limit rods are connected to the planing mechanism, and the two limit rods are connected to the planing mechanism. A same support plate is fixedly installed on the top of the side where the rods are close to each other, and a locking screw is rotatably connected to the top of the support plate. Two moving rods are symmetrically penetrated and slidably connected on the support plate, and a same connecting plate is fixedly installed on the top of the two moving rods, and a nut is fixedly installed on the top of the connecting plate. The locking screws penetrate the connecting plate and the nut respectively and are threadedly connected to the nut. A same pressing plate is fixedly installed on the bottom ends of the two moving rods, and the pressing plate is used to press and limit the impeller body. A same connecting assembly is connected to the bottom of the side where the two limit rods are away from each other, and the bottom of the connecting assembly is connected to the bottom of the support frame.

[0020] In a possible design, the connection assembly includes a fixed plate fixedly mounted on one side of the bottom of the support frame, a support shaft is fixedly mounted through the fixed plate, pull rods are symmetrically rotatably sleeved on both ends of the support shaft, the top end of the pull rod is rotatably connected to the bottom of one side of the corresponding limit rod, two torsion springs are symmetrically sleeved on the support shaft, and the two ends of the torsion spring are respectively fixedly connected to one side of the fixed plate and the pull rod;

[0021] A limiting plate is fixedly installed on the top of one side of the limiting frame, and a buffer rod is slidably connected to the limiting plate. The top end of the buffer rod is fixedly connected to the top of one side of the corresponding limiting rod, and the buffer rod is sleeved with a first compression spring located above the limiting plate, and the top and bottom ends of the first compression spring are respectively fixedly connected to the top end of the buffer rod and the top of the limiting plate.

[0022] In a possible design, the planing mechanism includes two transmission rods that are slidably connected to the two limit rods respectively, and a transmission tube is provided on the transmission rod for sliding sleeves, one end of the two transmission tubes is slidably connected to one side of the L-shaped frame, and the same mounting rod is fixedly installed on the side where the two transmission tubes are close to each other. There are two mounting rods, and an L-shaped plate is fixedly installed on the mounting rod on one side, and the bottom of the L-shaped plate is fixedly connected to one side of the pressure plate; the same transmission plate is fixedly installed on the side where the two mounting rods are close to each other, and a moving ring is provided on the sliding sleeve of the transmission plate, and a power assembly is installed on the top of the moving ring, and the top of the power assembly passes through the sliding hole and extends to the top of the L-shaped frame, and one side of the power assembly passes through the inner wall of one side of the L-shaped frame and extends to the outside of the L-shaped frame, and the power assembly is connected to one side of the L-shaped frame, and a tool holder is fixedly installed on the bottom of the moving ring, and two planers are fixedly installed on the tool holder, and the heights of the planers are inconsistent.

[0023] In a possible design, the power assembly includes a connecting rod fixedly mounted on the top of the moving ring, a sleeve is slidably sleeved on the connecting rod, the top of the sleeve passes through the sliding hole and extends to the top of the L-shaped frame, sliding frames are fixedly mounted on the top of both sides of the sleeve, the sliding frames are slidably connected to the inner wall of one side of the corresponding sliding hole, a second cylinder is fixedly mounted on one side of the L-shaped frame, and the piston rod of the second cylinder extends into the L-shaped frame and is fixedly connected to one side of the sleeve.

[0024] The method for using the Roots blower impeller planing device comprises the following steps:

[0025] S1. First, place a mold frame that matches the impeller body on the support frame, and insert the corresponding clamping plate into the positioning cover, so that the mold frame is clamped with the positioning cover through the clamping plate, and then place the impeller body to be planed in the mold frame, and at this time, use the mold frame to position and support the impeller body;

[0026] S2. Rotate the locking screw, and under the action of the threaded transmission of the nut, the connecting plate can be driven to move longitudinally, thereby driving the two moving rods to move accordingly, and adjusting the initial height of the pressing plate, so as to achieve adjustment when clamping the impeller bodies of different thicknesses. At the same time, when the pressing plate moves, the two transmission rods can be driven to move through the L-shaped plate, and at this time, under the drive of the two transmission tubes, the two mounting rods and the transmission plate, the initial height of the planer can be adjusted;

[0027] S3. After the initial height of the pressure plate and the planer is adjusted, the first cylinder is started to drive the U-shaped frame to move, and the U-shaped frame is used to clamp and limit the mold frame. When the two limit rods move with the U-shaped frame, they can generate pulling force on the two pull rods, so that the two pull rods rotate in the horizontal direction. At this time, under the pulling action of the pull rod, the corresponding limit rod can be driven to move downward, and the pressure plate can be driven to move downward to clamp and position the impeller body;

[0028] S4, start the second cylinder to drive the sleeve to move, and at this time, under the transmission action of the connecting rod, the moving ring can be driven to move, and at this time, the two planers can be driven to move, and the planer located at the front side is set at a higher position than the planer located at the rear side, so when the moving ring moves, the impeller body can be planed, and when two planers with a height difference are set to cut the impeller body, the resistance can be reduced accordingly, so the impeller body can be planed;

[0029] S5. After the planing of one side of the top of the impeller body is completed, the first cylinder is started to shrink its piston rod, which can drive the U-shaped frame to move in the opposite direction. The torsion spring and the first compression spring in a stressed state can respectively drive the pull rod to rotate upward and push the corresponding limit rod to move upward, so as to drive the pressure plate to move upward and reset, thereby releasing the clamping position of the impeller body;

[0030] S6, start the stepper motor to drive the active bevel gear to rotate, and at this time, under the meshing transmission effect with the driven bevel gear, the active gear can be driven to rotate. When the active gear rotates, under the meshing transmission effect with the driven gear, the positioning cover can be driven to rotate 180°, so that the impeller body can be rotated and adjusted;

[0031] S7, respectively starting the first cylinder again to clamp and position the impeller body, and then starting the second cylinder to plane the other side of the top of the impeller body;

[0032] S8. During the planing process of the impeller body, the waste chips generated can fall into the collection box so that the waste chips can be collected, and after the positioning frame is pulled upward and the positioning frame is pulled out from the positioning ring, the collection box can be pulled out so that the collected waste chips can be cleaned.

[0033] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0034] Beneficial effects: In the present invention, the collecting mechanism can be connected by sliding with the guide rail and the slide bar, so that the collecting box can be supported by horizontal sliding, so that the collecting box can be pulled out or put in, and in the process of planing the impeller body, the waste chips generated can fall into the collecting box, so that the waste chips can be collected, and after the collecting box is pulled out, the collected waste chips can be conveniently cleaned;

[0035] In the present invention, by means of the supporting mechanism, after the card plate is inserted into the positioning cover, the impeller body to be planed can be placed in the mold frame. At this time, the mold frame can be used to position and support the impeller body, so that when the impeller body is planed, the impeller body can be prevented from displacement. After that, the positioning cover can be driven to rotate by starting the transmission component, so that after the processing of the top side of the impeller body is completed, the impeller body can be rotated and switched to a different position, so as to facilitate comprehensive planing of the end face of the impeller body.

[0036] In the present invention, by means of the provided positioning mechanism, the locking screw can be rotated, and under the action of the threaded transmission with the nut, the connecting plate can be driven to move longitudinally, thereby driving the two moving rods to move accordingly, and adjusting the initial height of the pressing plate, so that when clamping the impeller bodies of different thicknesses, the adjustment can be realized, and after the adjustment of the pressing plate is completed, the U-shaped frame is driven to move by starting the first cylinder, and the mold frame is clamped and limited by the U-shaped frame, and when the two limiting rods move with the U-shaped frame, they can move downward under the transmission action of the connecting assembly, thereby driving the pressing plate to move downward, and the impeller body is clamped and positioned by the pressing plate, so that the impeller body can be stably limited when the impeller body is planed;

[0037] In the present invention, through the planing mechanism, when the two transmission rods move downward with the pressure plate, the corresponding transmission pipes can be driven to move downward, and at this time, the two planers can be driven to move downward to the position where the top of the impeller body is planed. Then, the power component is started to drive the moving ring to move, and at this time, the two planers can be driven to move, and the planer located on the front side is set at a higher position than the planer located on the rear side. Therefore, when the moving ring moves, the impeller body can be planed, and when two planers with a height difference are set to cut the impeller body, the resistance can be reduced accordingly, so the impeller body can be planed.

[0038] The present invention can stably position the impeller body, thereby preventing the impeller body from being displaced during the planing process. At the same time, the position of the impeller body can be easily changed when the impeller body is planed, so good convenience can be provided when the impeller body is planed, and waste chips generated can be collected when the impeller body is planed, so it has good convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A three-dimensional schematic diagram of the first-view structure of a Roots blower impeller planing device provided in an embodiment of the present invention;

[0040] Figure 2 A three-dimensional schematic diagram of the structure of the Roots blower impeller planing device provided by an embodiment of the present invention from a second perspective;

[0041] Figure 3 A three-dimensional schematic diagram of the connection structure of two guide rails, a collecting box and two slide bars of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0042] Figure 4 A three-dimensional schematic diagram of the connection structure of the stepping motor, transmission shaft, positioning cover and mold frame of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0043] Figure 5 A three-dimensional schematic diagram of the separation structure of the positioning cover, the mold frame and the impeller body of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0044] Figure 6 A three-dimensional schematic diagram of the impeller body structure of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0045] Figure 7 A three-dimensional schematic diagram of the connection structure of the first cylinder, the positioning frame, the two transmission rods and the two transmission pipes of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0046] Figure 8 A three-dimensional schematic diagram of a top view of a first cylinder, a positioning frame, two limit rods, two pull rods and a support shaft connection structure of a Roots blower impeller planing device provided in an embodiment of the present invention;

[0047] Fig. 9 A bottom-up three-dimensional schematic diagram of a first cylinder, a positioning frame, two limit rods, two pull rods and a supporting shaft connection structure of a Roots blower impeller planing device provided in an embodiment of the present invention;

[0048] Fig.10A three-dimensional schematic diagram of the second cylinder, sleeve, connecting rod, moving ring, tool holder and planer connection structure of the Roots blower impeller planing device provided in an embodiment of the present invention;

[0049] Fig.11 A three-dimensional schematic diagram of the connection structure of a stepper motor, a transmission shaft, a driving gear, a driven gear and a positioning cover of a Roots blower impeller planing device provided in an embodiment of the present invention.

[0050] Reference numerals:

[0051] 1. Mounting frame; 2. Column; 3. Support plate; 4. Guide rail; 5. Collection box; 6. Slide bar; 7. Support frame; 8. Positioning cover; 9. Mold frame; 10. Card plate; 11. Impeller body; 12. Driven gear; 13. Fixed frame; 14. L-shaped frame; 15. Transmission shaft; 16. Stepper motor; 17. Active bevel gear; 18. Driven bevel gear; 19. Active gear; 20. Limit rail; 21. Slide plate; 22. U-shaped frame; 23. First cylinder; 24. Limit frame; 25. Limit rod; 26. Support plate; 27. Connecting plate; 28. Moving rod; 2 9. Pressing plate; 30. Locking screw; 31. Nut; 32. Limiting plate; 33. Buffer rod; 34. First compression spring; 35. Pull rod; 36. Fixed plate; 37. Support shaft; 38. Torsion spring; 39. Transmission rod; 40. Transmission tube; 41. Mounting rod; 42. Transmission plate; 43. Moving ring; 44. Tool holder; 45. Planer; 46. Connecting rod; 47. Sleeve; 48. Sliding frame; 49. Second cylinder; 50. L-shaped plate; 51. Positioning ring; 52. Limiting plate; 53. Support rod; 54. Positioning frame; 55. Second compression spring. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0053] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0054] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0055] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0057] Example 1: Reference Figure 1-Figure 9 A Roots blower impeller planing device of this embodiment mainly includes a mounting frame 1, and columns 2 are installed at the four corners of the bottom of the mounting frame 1 by bolts or other fixing methods. The upper ends of the four columns 2 are welded with a same support plate 3 to form a stable support structure. Inside the mounting frame 1, a support frame 7 is installed by welding or other fixing methods to provide support for the subsequent supporting mechanism. The top of the mounting frame 1 is fixed with a fixing frame 13 by welding or bolting, and one side of the fixing frame 13 is welded with an L-shaped frame 14. The bottom of the L-shaped frame 14 is fixedly connected to one side of the top of the mounting frame 1 by welding or other methods. At the same time, a sliding hole is opened on the L-shaped frame 14 to provide space for the subsequent lifting and sliding of the planing mechanism.

[0058] like Figure 3As shown, in order to collect the waste, we installed a collection mechanism on the top of the pallet 3. The collection mechanism specifically includes a collection box 5 placed on the top of the pallet 3. Slide bars 6 are welded on both sides of the collection box 5, and a guide rail 4 is fixed on the corresponding side of the two columns 2. The slide bar 6 can slide on the guide rail 4 to achieve horizontal sliding support of the collection box 5. In order to fix the collection box 5, we installed a lock assembly on one side of the collection box 5. The lock assembly specifically includes a positioning ring 51 welded on one side of the pallet 3, and a limiting plate 52 is welded on one side of the collection box 5. A positioning frame 54 is slidably connected to the limiting plate 52, and the positioning frame 54 can be plugged with the positioning ring 51. A support rod 53 is slidably connected to the positioning frame 54, and the top and bottom ends of the support rod 53 are respectively welded and fixed to one side of the collection box 5 and the top of the limiting plate 52. On the support rod 53, we also set a second compression spring 55 located above the positioning frame 54, and the top and bottom ends of the second compression spring 55 are respectively welded and fixed to the top of the support rod 53 and the top of the positioning frame 54. After the collecting box 5 is pushed onto the supporting plate 3 , the positioning frame 54 is released, and the second compression spring 55 pushes the positioning frame 54 to move downward, so that the positioning frame 54 is inserted into the positioning ring 51 , thereby realizing the positioning of the collecting box 5 .

[0059] like Figure 1 , Figure 4 and Figure 5 As shown, the supporting mechanism passes through the support frame 7 and is rotatably connected to the support frame 7. The supporting mechanism specifically includes a positioning cover 8, and the positioning cover 8 is rotatably connected to the support frame 7 through a bearing. A clamping plate 10 is movably mounted in the positioning cover 8, the top of the clamping plate 10 extends to the top of the positioning cover 8 and is welded with a mold frame 9, and the impeller body 11 is clamped in the mold frame 9. The top of the L-shaped frame 14 is installed with a transmission assembly by bolts or other fixing methods, and the bottom of the transmission assembly extends to the bottom of the support frame 7 and is connected to the bottom of the positioning cover 8. After the clamping plate 10 is inserted into the positioning cover 8, the impeller body 11 to be planed is placed in the mold frame 9, and the mold frame 9 is used to position and support the impeller body 11 to prevent displacement when the impeller body 11 is planed.

[0060] like Figure 4 and Figure 5As shown, the transmission assembly specifically includes a stepper motor 16 fixedly mounted on one side of the top of the L-shaped frame 14, and a driving bevel gear 17 is fixedly mounted on the output shaft of the stepper motor 16. A transmission shaft 15 is rotatably connected to the top inner wall of the L-shaped frame 14, and a driven bevel gear 18 located above the L-shaped frame 14 is fixedly sleeved on the transmission shaft 15, and the driving bevel gear 17 is meshed with the driven bevel gear 18. A driving gear 19 is fixedly mounted on the bottom end of the transmission shaft 15, and a driven gear 12 is welded to the bottom end of the positioning cover 8, and the driving gear 19 is meshed with the driven gear 12. By starting the stepper motor 16, the driving bevel gear 17 can be driven to rotate, and then the driving gear 19 is driven to rotate under the meshing transmission effect with the driven bevel gear 18. When the driving gear 19 rotates, it will drive the positioning cover 8 to rotate 180° under the meshing transmission effect with the driven gear 12, so as to adjust the rotation of the impeller body 11 and facilitate comprehensive planing of the impeller body 11.

[0061] like Figure 8 and Fig. 9 As shown, the positioning mechanism is a key component to ensure the stable position of the impeller body 11 during the planing process. The positioning mechanism is installed on the top of the mounting frame 1 and is clamped with the support frame 7 and the supporting mechanism to clamp and position the impeller body 11. The positioning mechanism is mainly composed of a first cylinder 23, a U-shaped frame 22, a slide plate 21, a limit rail 20, a limit frame 24, a limit rod 25, a support plate 26, a moving rod 28, a connecting plate 27, a nut 31, a pressure plate 29, and a locking screw 30.

[0062] First, the first cylinder 23 is fixedly mounted on the top of the mounting frame 1 and connected to the external air source pipeline to ensure that it can perform normal telescopic movement. A U-shaped frame 22 is mounted on the piston rod of the first cylinder 23 by welding or other fixing methods. The shape of the U-shaped frame 22 matches the mold frame 9 to ensure that it can be effectively clamped.

[0063] like Figure 1 As shown, at the bottom of the U-shaped frame 22, two slide plates 21 are symmetrically welded, and the two slide plates 21 can slide along two limit rails 20 symmetrically fixedly installed on the support frame 7, thereby ensuring the stability of the U-shaped frame 22 during movement.

[0064] like Figure 8 As shown, both sides of the U-shaped frame 22 are installed with limit frames 24 by welding or other fixing methods, and the limit frames 24 are slidably connected with limit rods 25. These two limit rods 25 will play a key transmission and limit role in subsequent movements.

[0065] like Figure 8As shown, a support plate 26 is fixedly mounted on the top of the two limit rods 25, and a locking screw 30 is rotatably connected to the top of the support plate 26. Two moving rods 28 are symmetrically penetrated and slidably connected on the support plate 26, and a connecting plate 27 is fixedly connected to the top of the two moving rods 28, and a nut 31 is fixedly mounted on the top of the connecting plate 27. The locking screw 30 penetrates the connecting plate 27 and the nut 31 respectively, and is threadedly connected to the nut 31.

[0066] The bottom ends of the two moving rods 28 are fixedly connected to a pressing plate 29 , which is used to press and limit the impeller body 11 .

[0067] In addition, the bottoms of the two limiting rods 25, such as Figure 8 As shown, it is also connected to the bottom of the support frame 7 through a connecting assembly. This connecting assembly is mainly composed of a fixing plate 36, a supporting shaft 37, a pull rod 35, a torsion spring 38, a limit plate 32, a buffer rod 33 and a first compression spring 34.

[0068] like Figure 8 As shown, the fixing plate 36 is fixedly mounted on one side of the bottom of the support frame 7, and a support shaft 37 is fixedly mounted thereon. On both ends of the support shaft 37, pull rods 35 are symmetrically rotatably sleeved. The top of the pull rod 35 is connected to the bottom of one side of the corresponding limit rod 25 by a rotational connection. On the support shaft 37, two torsion springs 38 are also symmetrically sleeved, and the two ends of the two torsion springs 38 are fixedly connected to one side of the fixing plate 36 and the pull rod 35, respectively.

[0069] like Figure 8 As shown, a limit plate 32 is installed on the top of one side of the limit frame 24 by welding or other fixing methods. A buffer rod 33 is slidably connected to the limit plate 32, and the top of the buffer rod 33 is fixedly connected to the top of one side of the corresponding limit rod 25. A first compression spring 34 is also sleeved on the buffer rod 33 and is located above the limit plate 32. The top and bottom ends of the first compression spring 34 are fixedly connected to the top of the buffer rod 33 and the top of the limit plate 32, respectively.

[0070] When the planing device is used, the initial height of the pressing plate 29 needs to be adjusted first according to the thickness of the impeller body 11. This can be achieved by rotating the locking screw 30. Under the threaded transmission action with the nut 31, the locking screw 30 can drive the connecting plate 27 to move longitudinally, thereby driving the two moving rods 28 to move accordingly, and then adjusting the initial height of the pressing plate 29.

[0071] After the adjustment is completed, the first cylinder 23 is started to drive the U-shaped frame 22 to move closer to the mold frame 9. At this time, the two limit rods 25 will respectively generate pulling force on the two pull rods 35, so that the two pull rods 35 rotate in the horizontal direction. Under the pulling action of the pull rods 35, the corresponding limit rods 25 can be driven to move downward, thereby driving the pressure plate 29 to move downward to clamp and position the impeller body 11.

[0072] At the same time, when the limit rod 25 moves downward, it will also drive the corresponding buffer rod 33 to move downward, compressing the first compression spring 34. When the pull rod 35 rotates in the horizontal direction, the torsion spring 38 will be in a stressed state.

[0073] Therefore, when the U-shaped frame 22 moves back to the original position, the torsion spring 38 and the first compression spring 34 in a stressed state can respectively drive the pull rod 35 to rotate upward and push the corresponding limit rod 25 to move upward. In this way, the pressure plate 29 can be driven to move upward and reset, thereby releasing the clamping position of the impeller body 11.

[0074] Example 2: Reference Figure 1 , Figure 7 , Figure 10-11 This embodiment is based on the first embodiment. Regarding the Roots blower impeller planing device proposed in the first embodiment, a planing mechanism is further proposed. The planing mechanism is a key component for implementing the planing process on the impeller body 11. The planing mechanism is installed on the inner wall of one side of the L-shaped frame 14 and is connected to the positioning mechanism. The top of the planing mechanism passes through the sliding hole and extends to the top of the L-shaped frame 14. One side of the planing mechanism extends to the outside of the L-shaped frame 14 and is connected to one side of the L-shaped frame 14. The planing mechanism is mainly composed of a transmission rod 39, a transmission tube 40, a mounting rod 41, an L-shaped plate 50, a transmission plate 42, a moving ring 43, a tool holder 44, a planer 45, a connecting rod 46, a sleeve 47, a sliding frame 48 and a second cylinder 49.

[0075] First, the two transmission rods 39 are slidably connected to the two limit rods 25. A transmission tube 40 is slidably sleeved on the transmission rod 39. One end of the two transmission tubes 40 is slidably connected to one side of the L-shaped frame 14 to ensure that when the transmission rod 39 moves, the transmission tube 40 can be driven to move accordingly.

[0076] A mounting rod 41 is fixedly mounted on one side of the two transmission tubes 40 that are close to each other, and the number of mounting rods 41 is two. An L-shaped plate 50 is mounted on the mounting rod 41 on one side by welding or other fixing methods. The bottom of the L-shaped plate 50 is fixedly connected to one side of the pressing plate 29 to ensure that when the pressing plate 29 moves, the L-shaped plate 50, the corresponding mounting rod 41 and the transmission tube 40 can be driven to move.

[0077] like Figure 7 As shown, on the side where the two mounting rods 41 are close to each other, a transmission plate 42 is also fixedly installed. On the transmission plate 42, the sliding sleeve is provided with a moving ring 43. The top of the moving ring 43 is then provided with a power assembly for driving the moving ring 43 to move.

[0078] like Fig.10 As shown, the power assembly is mainly composed of a connecting rod 46, a sleeve 47, a sliding frame 48 and a second cylinder 49. Among them, the connecting rod 46 is fixedly installed on the top of the moving ring 43. On the connecting rod 46, a sleeve 47 is provided for sliding sleeve. The top of the sleeve 47 passes through the sliding hole on the L-shaped frame 14 and extends to the top thereof. A sliding frame 48 is fixedly installed on the top of both sides of the sleeve 47. The two sliding frames 48 are respectively slidably connected with the inner wall of one side of the corresponding sliding hole to ensure the stability of the sleeve 47 during the movement.

[0079] like Figure 7 As shown, a second cylinder 49 is fixedly installed on one side of the L-shaped frame 14. The piston rod of the second cylinder 49 extends into the L-shaped frame 14 and is fixedly connected to one side of the sleeve 47. In this way, when the second cylinder 49 is activated, the sleeve 47 can be driven to move. In the process of the movement of the sleeve 47, due to the fixed connection relationship between the connecting rod 46 and the moving ring 43, and the sliding sleeve relationship between the connecting rod 46 and the sleeve 47, the moving ring 43 can be driven to move accordingly.

[0080] like Fig.10 As shown, a tool holder 44 is fixedly installed at the bottom of the moving ring 43. Two planers 45 are fixedly installed on the tool holder 44. The two planers 45 are arranged at different heights, and the planer 45 located at the front side is arranged at a higher position than the planer 45 located at the rear side. Such an arrangement enables the two planers 45 to plan the impeller body 11 successively when the moving ring 43 moves, thereby achieving the planing of the impeller body 11.

[0081] When the planing device is used, the impeller body 11 is first clamped and positioned by the pressing plate 29. Then, as the two transmission rods 39 move downward along with the pressing plate 29, the corresponding transmission pipe 40, the mounting rod 41, the L-shaped plate 50, the tool holder 44 and the planer 45 can be driven to move downward to a position where the top of the impeller body 11 is planed.

[0082] At this time, the second cylinder 49 is started to drive the sleeve 47 to move. During the movement of the sleeve 47, the transmission between the connecting rod 46 and the moving ring 43 can drive the moving ring 43 to move. The movement of the moving ring 43 can drive the two planers 45 to move horizontally, thereby realizing the planing process of the impeller body 11.

[0083] Since two planers 45 with a height difference are provided to cut the impeller body 11, the resistance can be reduced accordingly and the planing efficiency can be improved. At the same time, such a setting method can also make the planing process more uniform and improve the processing quality.

[0084] The present invention provides a method for using a Roots blower impeller planing device, comprising the following steps:

[0085] S1. First, place the mold frame 9 matched with the impeller body 11 on the support frame 7, and insert the corresponding clamping plate 10 into the positioning cover 8, so that the mold frame 9 is clamped with the positioning cover 8 through the clamping plate 10, and then place the impeller body 11 to be planed in the mold frame 9, and at this time, use the mold frame 9 to position and support the impeller body 11;

[0086] S2. Rotate the locking screw 30. Under the threaded transmission action with the nut 31, the connecting plate 27 can be driven to move longitudinally, thereby driving the two moving rods 28 to move accordingly, and adjusting the initial height of the pressing plate 29, so as to achieve adjustment when clamping the impeller body 11 of different thicknesses. At the same time, when the pressing plate 29 moves, the two transmission rods 39 can be driven to move through the L-shaped plate 50. At this time, under the drive of the two transmission tubes 40, the two mounting rods 41 and the transmission plate 42, the initial height of the planer 45 can be adjusted;

[0087] S3, after the initial height of the pressing plate 29 and the planer 45 is adjusted, the first cylinder 23 is started to drive the U-shaped frame 22 to move, and the U-shaped frame 22 is used to clamp and limit the mold frame 9, and when the two limit rods 25 move with the U-shaped frame 22, they can generate pulling force on the two pull rods 35, so that the two pull rods 35 rotate in the horizontal direction. At this time, under the pulling action of the pull rods 35, the corresponding limit rods 25 can be driven to move downward, and the pressing plate 29 can be driven to move downward, so as to clamp and position the impeller body 11;

[0088] S4, start the second cylinder 49 to drive the sleeve 47 to move, and at this time, under the transmission action of the connecting rod 46, the moving ring 43 can be driven to move, and at this time, the two planers 45 can be driven to move, and the planer 45 located at the front side is set at a higher position than the planer 45 located at the rear side, so when the moving ring 43 moves, the impeller body 11 can be planed, and when two planers 45 with a height difference are set to cut the impeller body 11, the resistance can be reduced accordingly, so the impeller body 11 can be planed;

[0089] S5. After the planing of the top side of the impeller body 11 is completed, the first cylinder 23 is started to shrink its piston rod, which can drive the U-shaped frame 22 to move in the opposite direction. The torsion spring 38 and the first compression spring 34 in the stressed state can respectively drive the pull rod 35 to rotate upward and push the corresponding limit rod 25 to move upward, so as to drive the pressure plate 29 to move upward and reset, thereby releasing the clamping position of the impeller body 11;

[0090] S6, start the stepper motor 16 to drive the active bevel gear 17 to rotate, and at this time, under the meshing transmission effect with the driven bevel gear 18, it can drive the active gear 19 to rotate. When the active gear 19 rotates, under the meshing transmission effect with the driven gear 12, it can drive the positioning cover 8 to rotate 180°, so that the impeller body 11 can be rotated and adjusted;

[0091] S7, respectively start the first cylinder 23 again to clamp and position the impeller body 11, and then start the second cylinder 49 to plan the other side of the top of the impeller body 11;

[0092] S8. During the planing process of the impeller body 11, the waste chips generated can fall into the collecting box 5 so that the waste chips can be collected, and after the positioning frame 54 is pulled upward and the positioning frame 54 is pulled out from the positioning ring 51, the collecting box 5 can be pulled out at this time so that the collected waste chips can be cleaned.

[0093] However, as is well known to those skilled in the art, the working principles and wiring methods of the stepper motor 16, the first cylinder 23 and the second cylinder 49 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0094] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A Roots blower impeller planing device, comprising a mounting frame (1), wherein columns (2) are fixedly mounted at four corners of the bottom of the mounting frame (1), the four columns (2) are fixedly connected to a same support plate (3), a support frame (7) is fixedly mounted inside the mounting frame (1), a fixing frame (13) is fixedly mounted on the top of the mounting frame (1), an L-shaped frame (14) is fixedly mounted on one side of the fixing frame (13), the bottom of the L-shaped frame (14) is fixedly connected to one side of the top of the mounting frame (1), and a sliding hole is opened on the L-shaped frame (14), characterized in that: The planing device also includes: A collecting mechanism, the collecting mechanism is installed on the top of the support plate (3), and the collecting mechanism is connected to the four columns (2) respectively; A supporting mechanism, the supporting mechanism passes through the supporting frame (7) and is connected to the supporting frame (7), an impeller body (11) is clamped on the supporting mechanism, and the top of the supporting mechanism extends to the top of the L-shaped frame (14) and is connected to the top of the L-shaped frame (14); A positioning mechanism, the positioning mechanism is mounted on the top of the mounting frame (1), the positioning mechanism is connected to the support frame (7), the positioning mechanism is clamped with the supporting mechanism, and the positioning mechanism is used to clamp and position the impeller body (11); A planing mechanism, the planing mechanism being mounted on an inner wall of one side of the L-shaped frame (14), the planing mechanism being connected to the positioning mechanism, the top of the planing mechanism passing through the slide hole and extending to the top of the L-shaped frame (14), one side of the planing mechanism extending to the outside of the L-shaped frame (14) and connected to one side of the L-shaped frame (14), the planing mechanism being used to plane the end surface of the impeller body (11); The positioning mechanism comprises a first cylinder (23) fixedly mounted on the top of the mounting frame (1), the first cylinder (23) being connected to an external air source pipeline, a U-shaped frame (22) being fixedly mounted on the piston rod of the first cylinder (23), the U-shaped frame (22) being clamped with the mold frame (9), two slide plates (21) being symmetrically fixedly mounted on the bottom of the U-shaped frame (22), and two limit rails (20) being symmetrically fixedly mounted on the support frame (7), the bottom of the slide plates (21) extending into the corresponding limit rails (20) and being slidably connected to the inner wall of the limit rails (20), limit frames (24) being fixedly mounted on both sides of the U-shaped frame (22), limit rods (25) being slidably connected to the limit frames (24), the two limit rods (25) being connected to the planing mechanism, the two limit rods (25) being mutually abutted. A support plate (26) is fixedly installed on the top of the near side, a locking screw (30) is rotatably connected to the top of the support plate (26), two moving rods (28) are symmetrically penetrated and slidably connected on the support plate (26), a connecting plate (27) is fixedly installed on the top of the two moving rods (28), a nut (31) is fixedly installed on the top of the connecting plate (27), the locking screw (30) penetrates the connecting plate (27) and the nut (31) respectively and is threadedly connected to the nut (31), a pressing plate (29) is fixedly installed on the bottom of the two moving rods (28), the pressing plate (29) is used to press and limit the impeller body (11), and a connecting assembly is connected to the bottom of the two limiting rods (25) away from each other, and the bottom of the connecting assembly is connected to the bottom of the support frame (7); The connection assembly comprises a fixing plate (36) fixedly mounted on one side of the bottom of the support frame (7), a supporting shaft (37) passing through the fixing plate (36) and fixedly mounted thereon, pull rods (35) being symmetrically rotatably sleeved on both ends of the supporting shaft (37), the top end of the pull rod (35) being rotatably connected to the bottom of one side of the corresponding limiting rod (25), two torsion springs (38) being symmetrically sleeved on the supporting shaft (37), the two ends of the torsion spring (38) being respectively fixedly connected to one side of the fixing plate (36) and the pull rod (35); A limiting plate (32) is fixedly mounted on the top of one side of the limiting frame (24), a buffer rod (33) is slidably connected to the limiting plate (32), the top of the buffer rod (33) is fixedly connected to the top of one side of the corresponding limiting rod (25), a first compression spring (34) is sleeved on the buffer rod (33) and is located above the limiting plate (32), and the top and bottom ends of the first compression spring (34) are respectively fixedly connected to the top of the buffer rod (33) and the top of the limiting plate (32).

2. The Roots blower impeller planing device according to claim 1, characterized in that: The collecting mechanism comprises a collecting box (5) placed on the top of the supporting plate (3), slide bars (6) are fixedly mounted on both sides of the collecting box (5), guide rails (4) are slidably connected to the slide bars (6), and the guide rails (4) are fixedly connected to one side of two corresponding uprights (2), and a locking assembly is mounted on one side of the collecting box (5), and the locking assembly is connected to one side of the supporting plate (3).

3. The Roots blower impeller planing device according to claim 2, characterized in that: The locking assembly comprises a positioning ring (51) fixedly mounted on one side of the support plate (3); a limiting plate (52) fixedly mounted on one side of the collection box (5); a positioning frame (54) slidably connected to the limiting plate (52); the positioning frame (54) is plugged into the positioning ring (51); a support rod (53) is slidably connected to the positioning frame (54); the top and bottom ends of the support rod (53) are respectively fixedly connected to one side of the collection box (5) and the top of the limiting plate (52); a second compression spring (55) is sleeved on the support rod (53) and is located above the positioning frame (54); the top and bottom ends of the second compression spring (55) are respectively fixedly connected to the top of the support rod (53) and the top of the positioning frame (54).

4. The Roots blower impeller planing device according to claim 1, characterized in that: The supporting mechanism comprises a positioning cover (8) which penetrates the support frame (7) and is rotatably connected to the support frame (7); a clamping plate (10) is movably mounted in the positioning cover (8); the top of the clamping plate (10) extends to the top of the positioning cover (8) and is fixedly mounted with a mold frame (9); the impeller body (11) is clamped in the mold frame (9); a transmission assembly is mounted on the top of the L-shaped frame (14); the bottom of the transmission assembly extends to the bottom of the support frame (7) and is connected to the bottom of the positioning cover (8).

5. The Roots blower impeller planing device according to claim 4, characterized in that: The transmission assembly comprises a stepper motor (16) fixedly mounted on one side of the top of the L-shaped frame (14); a driving bevel gear (17) is fixedly mounted on the output shaft of the stepper motor (16); a transmission shaft (15) passes through the inner wall of the top of the L-shaped frame (14) and is rotatably connected thereto; a driven bevel gear (18) located above the L-shaped frame (14) is fixedly sleeved on the transmission shaft (15); the driving bevel gear (17) meshes with the driven bevel gear (18); a driving gear (19) is fixedly mounted on the bottom end of the transmission shaft (15); a driven gear (12) is fixedly mounted on the bottom end of the positioning cover (8); and the driving gear (19) meshes with the driven gear (12).

6. The Roots blower impeller planing device according to claim 1, characterized in that: The planing mechanism comprises two transmission rods (39) respectively connected in a sliding manner to the two limit rods (25); a transmission tube (40) is slidably sleeved on the transmission rod (39); one end of each of the two transmission tubes (40) is slidably connected to one side of the L-shaped frame (14); a same mounting rod (41) is fixedly mounted on one side of the two transmission tubes (40) close to each other; the number of the mounting rods (41) is two; an L-shaped plate (50) is fixedly mounted on the mounting rod (41) located on one side; the bottom of the L-shaped plate (50) is fixedly connected to one side of the pressure plate (29); the two mounting rods (41) close to each other are fixedly mounted on the one side of the two transmission tubes (40); A transmission plate (42) is fixedly mounted on one side, a movable ring (43) is slidably mounted on the transmission plate (42), a power assembly is mounted on the top of the movable ring (43), the top of the power assembly passes through the sliding hole and extends to the top of the L-shaped frame (14), one side of the power assembly passes through the inner wall of one side of the L-shaped frame (14) and extends to the outside of the L-shaped frame (14), the power assembly is connected to one side of the L-shaped frame (14), a tool holder (44) is fixedly mounted on the bottom of the movable ring (43), two planing knives (45) are fixedly mounted on the tool holder (44), and the planing knives (45) are arranged at different heights.

7. The Roots blower impeller planing device according to claim 6, characterized in that: The power assembly comprises a connecting rod (46) fixedly mounted on the top of the moving ring (43); a sleeve (47) is slidably sleeved on the connecting rod (46); the top of the sleeve (47) passes through the sliding hole and extends to the top of the L-shaped frame (14); sliding frames (48) are fixedly mounted on the tops of both sides of the sleeve (47); the sliding frames (48) are slidably connected to the inner wall of one side of the corresponding sliding hole; a second cylinder (49) is fixedly mounted on one side of the L-shaped frame (14); a piston rod of the second cylinder (49) extends into the L-shaped frame (14) and is fixedly connected to one side of the sleeve (47).

8. The method for using the Roots blower impeller planing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. First, a mold frame (9) adapted to the impeller body (11) is placed on the support frame (7), and a corresponding clamping plate (10) is inserted into the positioning cover (8), so that the mold frame (9) is clamped with the positioning cover (8) through the clamping plate (10), and then the impeller body (11) to be planed is placed in the mold frame (9), and at this time, the mold frame (9) is used to position and support the impeller body (11); S2. Rotate the locking screw (30), and under the threaded transmission action with the nut (31), the connecting plate (27) can be driven to move longitudinally, thereby driving the two moving rods (28) to move accordingly, and adjusting the initial height of the pressing plate (29), so as to achieve adjustment when clamping the impeller body (11) of different thicknesses. At the same time, when the pressing plate (29) moves, the two transmission rods (39) can be driven to move through the L-shaped plate (50), and at this time, under the drive of the two transmission tubes (40), the two mounting rods (41) and the transmission plate (42), the initial height of the planer (45) can be adjusted; S3, after the initial height of the pressure plate (29) and the planer (45) is adjusted, the first cylinder (23) is started to drive the U-shaped frame (22) to move, and the mold frame (9) is clamped and limited by the U-shaped frame (22), and when the two limit rods (25) move with the U-shaped frame (22), a pulling force can be generated on the two pull rods (35), so that the two pull rods (35) rotate in the horizontal direction. At this time, under the pulling action of the pull rod (35), the corresponding limit rod (25) can be driven to move downward, and the pressure plate (29) can be driven to move downward, so as to clamp and position the impeller body (11); S4, starting the second cylinder (49) to drive the sleeve (47) to move, and at this time, under the transmission action of the connecting rod (46), the movable ring (43) can be driven to move, and at this time, the two planers (45) can be driven to move, and the planer (45) located on the front side is arranged at a higher position than the planer (45) located on the rear side, so that when the movable ring (43) moves, the impeller body (11) can be planed, and when the two planers (45) with a height difference are arranged to cut the impeller body (11), the resistance can be reduced accordingly, so that the impeller body (11) can be planed; S5. After the planing of the top side of the impeller body (11) is completed, the first cylinder (23) is started to shrink its piston rod, which can drive the U-shaped frame (22) to move in the opposite direction. The torsion spring (38) and the first compression spring (34) in a stressed state can respectively drive the pull rod (35) to rotate upward and push the corresponding limit rod (25) to move upward, so as to drive the pressure plate (29) to move upward and reset, thereby releasing the clamping position of the impeller body (11); S6, starting the stepper motor (16) to drive the active bevel gear (17) to rotate, and at this time, under the meshing transmission action with the driven bevel gear (18), the active gear (19) can be driven to rotate, and when the active gear (19) rotates, under the meshing transmission action with the driven gear (12), the positioning cover (8) can be driven to rotate (180) degrees, so that the impeller body (11) can be rotated and adjusted; S7, respectively starting the first cylinder (23) again to clamp and position the impeller body (11), and then starting the second cylinder (49) to plane the other side of the top of the impeller body (11); S8. During the process of planing the impeller body (11), the waste chips generated can fall into the collection box (5) so that the waste chips can be collected, and after the positioning frame (54) is pulled upward and the positioning frame (54) is drawn out of the positioning ring (51), the collection box (5) can be drawn out so that the collected waste chips can be cleaned.

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