Processing and polishing device and method for roller shaft head of straw bundling machine

Abstract

The invention belongs to the technical field of grinding and polishing equipment, and discloses a processing and polishing device and method for a roller shaft head of a straw bundling machine. The processing and polishing device for the roller shaft head of the straw bundling machine comprises a main machine frame, a lower table plate is fixedly installed at the lower position in the main machine frame, a main rotating shaft is rotationally installed on the lower table plate, and a four-jaw chuck used for clamping the roller shaft head is fixedly installed at the top end of the main rotating shaft; a shaft end passive polishing assembly is mounted on the main frame above the four-jaw chuck, and a shaft body polishing assembly is mounted on the outer side of the four-jaw chuck on the main frame; a synchronous height adjusting type multi-disc polishing assembly is arranged on the outer side of the main rotating shaft; a shaft end passive polishing assembly is used for grinding and polishing the upper top face of a roller shaft head; the shaft body polishing assembly is used for grinding and polishing a shaft body of the roller shaft head; the synchronous height adjusting type multi-disc polishing assembly is used for grinding and polishing flange plates on roller shaft heads, and the production rate is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding and polishing equipment, and in particular relates to a processing and polishing device and method for a roller shaft head of a straw baler. Background Art

[0002] A straw baler is a key agricultural machinery and equipment, which is mainly used to pick up the straw scattered in the field and roll it into tight bales for easy storage, transportation and subsequent use; the baling chamber of existing straw balers is mostly a cylindrical chamber, and the baling chamber is composed of multiple rollers and side shell side panels, and the multiple rollers rotate in the same direction to roll the straw to form a tight bale.

[0003] The two ends of the roller are rotatably connected to the side plates of the outer shell through the roller shaft heads. The patent application number is CN201910362645.2, which discloses a roller installation structure of a baler, including a roller bearing, a roller, a roller end cover, a sprocket shaft, a nut plate and a sealing ring; the roller bearing is arranged on the outer side of the side plate of the outer shell, the nut plate is arranged on the inner side of the side plate of the outer shell, the sprocket shaft passes through the inner ring and the inner oil seal of the roller bearing in sequence, and the inner end of the sprocket shaft is fixedly connected to the roller end cover; the sealing ring is sleeved on the outside of the nut plate, and a thread groove is arranged on the outer wall of the nut plate. The thread rotation direction of the thread groove from the inside to the outside of the sealing ring is consistent with the running direction of the roller when working, and the outer wall of the sealing ring with the thread groove cooperates with the clearance of the roller wall to form a movable seal.

[0004] It can be seen that the sprocket shaft is integrally connected with a flange, and the sprocket shaft is fixedly connected to the roller end covers at both ends of the roller by bolts passing through the flange, and the sprocket shaft is rotatably connected to the side plates of the outer shell. The above-mentioned sprocket shaft is the roller shaft head at both ends of the roller, and the flange is the flange on the roller shaft head. In order to ensure that the roller shaft head has good surface smoothness, the roller shaft head needs to be polished during the production process. During the processing, the staff needs to grind the shaft column end face, outer peripheral surface and flange outer peripheral surface of the roller shaft head one by one. Therefore, the roller needs to be adjusted repeatedly during the polishing operation. The posture and position of the shaft head, and each posture change is accompanied by the positioning and calibration of the workpiece, resulting in discontinuous process connection and interruption of the overall processing rhythm. Especially for the alternating polishing of complex geometric surfaces, workers need to constantly switch operating postures, which makes it difficult to form a standard assembly line operation, restricting mass production capacity, and during frequent adjustments and polishing, it is difficult for operators to maintain the ideal posture and pressure every time, which can easily lead to human errors. Especially in complex structures and hard-to-reach areas, adjustments are more difficult and insufficient or excessive polishing is prone to occur, resulting in poor consistency in polishing quality. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a processing and polishing device and method for the roller shaft head of a straw baler, in which the roller shaft head to be polished is stably fixed on the upper end of the main rotating shaft by a four-jaw chuck, the synchronous height-adjustable multi-disc polishing assembly is pressed on the upper surface of the flange on the roller shaft head, the shaft end passive polishing assembly contacts the top end of the shaft body of the roller shaft head, the shaft body polishing assembly contacts the shaft body of the roller shaft head, and the main rotating shaft, the four-jaw chuck and the roller shaft head are driven by a rotating drive unit to rotate at a high speed. At this time, the flange, shaft body and shaft top of the roller shaft head are synchronously polished to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A processing and polishing device for a roller shaft head of a straw baler comprises a main frame, a lower table is fixedly installed at a lower position inside the main frame, a main rotary shaft is rotatably installed on the lower table, a four-claw chuck for clamping the roller shaft head is fixedly installed on the top of the main rotary shaft, a shaft end passive polishing assembly is installed on the main frame above the four-claw chuck, and a shaft body polishing assembly is installed on the main frame outside the four-claw chuck; a synchronous height-adjusting multi-disc polishing assembly is arranged outside the main rotary shaft; The synchronous height-adjustable multi-disc polishing assembly includes an upper mounting plate sleeved on the outside of the main rotating shaft, the upper mounting plate is fixedly mounted on the main frame, and multiple polishing shafts are movably mounted in a ring shape and at equal intervals near the edge of the upper mounting plate. The first grinding plate can be detachably mounted on the upper end of the polishing shaft, and an adjustment component for driving the polishing shaft to move up and down is arranged on the lower platen.

[0007] The following is a further optimization of the above technical solution by the present invention: The outside of the polishing shaft is sleeved with a hollow shaft, the hollow shaft is slidably and transmission-connected with the polishing shaft, the upper end of the hollow shaft is rotationally connected with the upper mounting plate, the hollow shaft is transmission-connected with the main rotating shaft through a gear set, and the rotation of the main rotating shaft drives the hollow shaft and the polishing shaft to rotate synchronously.

[0008] Further optimization: the gear set includes a driven gear fixedly mounted on the outer surface of the hollow rotating shaft, an external gear sleeve fixedly mounted on the outer surface of the main rotating shaft, and the external gear sleeve and the driven gear mesh with each other.

[0009] Further optimization: the adjustment component includes at least one Z-axis screw electric linear module fixedly mounted on the lower platen, a lower supporting ring is mounted on the movable end of the Z-axis screw electric linear module, and the bottom end of the polishing shaft is rotatably connected to the top end of the lower supporting ring.

[0010] Further optimization: a plurality of telescopic columns are installed between the upper surface of the lower supporting ring and the lower surface of the upper mounting plate; the plurality of telescopic columns are arranged in a ring shape with equal spacing.

[0011] Further optimization: A rotary drive unit is provided below the lower platen. The power output end of the rotary drive unit is in transmission connection with the lower end of the main rotary shaft. The rotary drive unit is started to drive the main rotary shaft to drive the four-jaw chuck and the clamped roller shaft head to rotate.

[0012] Further optimization: The shaft-end passive polishing assembly includes a Z-axis automatic telescopic rod installed at the top end of the main frame. A sliding table is installed on the telescopic end of the Z-axis automatic telescopic rod. A second grinding disc is detachably installed on the lower surface of the sliding table. The second grinding disc is arranged coaxially with the main rotary shaft.

[0013] Further optimization: The shaft-body polishing assembly includes a cross beam arranged on the outer wall of the main frame below the sliding table, a Y-axis automatic telescopic rod installed on the outer wall of one side of the cross beam, a first-level support plate installed on the telescopic end of the Y-axis automatic telescopic rod, a second-level support plate elastically installed on the outer wall of the side of the first-level support plate away from the cross beam, a trapezoidal concave plate integrally formed on the outer wall of one side of the second-level support plate, and a sandpaper layer detachably installed on the side of the trapezoidal concave plate away from the second-level support plate.

[0014] Further optimization: A plurality of support rods are fixedly installed on the back surface of the second-level support plate. The other ends of the support rods respectively slide through the first-level support plate and the cross beam. A top contact spring is sleeved on the support rod between the first-level support plate and the second-level support plate.

[0015] The present invention also provides a processing and polishing method for the roller shaft head of a straw baler, based on the above-mentioned processing and polishing device for the roller shaft head of a straw baler, including the following steps: S101: Check whether all components of the processing and polishing device for the roller shaft head of the straw baler are in good condition. Then clamp one end of the roller shaft head on the four-jaw chuck to make the roller shaft head have no radial offset. After the clamping is completed, the staff sets the polishing parameters according to the size specifications and polishing requirements of the roller shaft head, including the rotation speed of the rotary drive unit, the downward stroke of the synchronous height-adjustable multi-disc polishing assembly, the downward stroke of the shaft-end passive polishing assembly, and the feed amount of the shaft-body polishing assembly; S102: After the debugging is completed, start the rotary drive unit to make the main rotary shaft, the four-jaw chuck, and the roller shaft head reach the preset high-speed rotation state. The synchronous height-adjustable multi-disc polishing assembly is started to comprehensively polish the upper surface of the flange of the roller shaft head; the shaft-end passive polishing assembly is started to perform grinding and polishing operations on the upper top surface of the roller shaft head; the shaft-body polishing assembly is started to perform grinding and polishing operations on the shaft body of the roller shaft head; S103: After the polishing is completed, the staff turns off the rotary drive unit to stop the rotation of the main rotary shaft, the four-jaw chuck, and the roller shaft head, and reset the synchronous height-adjustable multi-disc polishing assembly, the shaft-end passive polishing assembly, and the shaft-body polishing assembly. Remove the roller shaft head from the four-jaw chuck and perform a surface inspection; S104: After the polishing is completed, the staff cleans and maintains the entire device to ensure that the device is in good working condition and is ready for the next operation.

[0016] The present invention adopts the above technical solutions and has at least the following beneficial effects: 1. In the present invention, the rotary drive unit, the main rotating shaft, the four-jaw chuck, the synchronously adjustable multi-disk polishing assembly, the shaft-end passive polishing assembly, and the shaft-body polishing assembly cooperate with each other to polish the roller shaft head to be polished, enabling synchronous polishing of the flange, shaft body, and shaft top of the roller shaft head. Thus, the entire polishing process can be completed in a relatively short time, avoiding the cumbersome steps of traditional step-by-step polishing for each surface. It is suitable for mass production, enabling consistent polishing of the roller shaft head and improving the polishing quality.

[0017] 2. In the present invention, the four-jaw chuck can stably clamp the roller shaft head, ensuring the position accuracy of the roller shaft head during high-speed rotation and avoiding the problem of uneven polishing caused by vibration or deviation. The synchronously adjustable multi-disk polishing assembly, the shaft-end passive polishing assembly, and the shaft-body polishing assembly cover the flange, shaft top, and shaft body of the roller shaft head, ensuring that the three key areas can be evenly and fully polished. In particular, the synchronously adjustable multi-disk polishing assembly pressing on the flange of the roller shaft head can adjust the contact pressure according to different surface characteristics to ensure that each surface can obtain an ideal polishing effect. The shaft-end passive polishing assembly contacts the top of the shaft body, making the polishing pressure more uniform and reducing the situation of local over-grinding or insufficient polishing, thereby significantly improving the surface smoothness and cleanliness. During the grinding process, all polished surfaces are rotating at high speed synchronously, and the polishing pressure and friction force received by the surface tend to be consistent, avoiding the problems of local unevenness or uneven gloss in traditional manual or single-sided polishing, and enabling each polishing to achieve the expected effect.

[0018] 3. In the present invention, the spatial layout of multiple polishing assemblies enables synchronous grinding and polishing operations on the flange, shaft body, and shaft top of the roller shaft head, eliminating the time loss of repeated disassembly, installation, and adjustment in traditional processes. The main rotating shaft drives the roller shaft head to perform continuous rotational motion, keeping each polished surface in dynamic contact with the grinding surface at all times and avoiding the idling waiting caused by process switching. The rigid clamping of the four-jaw chuck in combination with high-speed rotation ensures the efficient operation of the grinding and polishing process, improving the production rate and the grinding and polishing quality.

[0019] The present invention will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0020] Figure 1 Schematic three-dimensional structure of Embodiment 1 of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention Figure 2 ; Figure 3 Schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention Figure 3 ; Figure 4 Front view of the overall structure in Embodiment 1 of the present invention; Figure 5 Cross-sectional view of the overall structure in Embodiment 1 of the present invention; Figure 6 Three-dimensional view of the overall structure in Embodiment 1 of the present invention; Figure 7 Three-dimensional cross-sectional view of the overall structure in Embodiment 1 of the present invention Figure 8 Schematic diagram of the structure of the synchronous height-adjustable multi-disc polishing assembly in Embodiment 1 of the present invention; Figure 9 Assembly cross-sectional view of the polishing rotating shaft and the hollow rotating shaft in Embodiment 1 of the present invention; Figure 10 Schematic diagram of the structure of the shaft-end passive polishing assembly in Embodiment 1 of the present invention; Figure 11 Schematic diagram of the structure of the shaft-body polishing assembly in Embodiment 1 of the present invention; Figure 12 Three-dimensional view of the overall structure in Embodiment 2 of the present invention.

[0021] In the figure: 1 - main frame; 2 - lower platen; 3 - rotation drive unit; 301 - reduction motor; 302 - motor frame; 4 - main rotating shaft; 5 - four-jaw chuck; 6 - synchronous height-adjustable multi-disc polishing assembly; 601 - Z-axis lead screw electric linear module; 602 - upper mounting plate; 6021 - hollow shaft sleeve; 603 - lower supporting ring; 6031 - lower shaft head sleeve; 604 - telescopic column; 605 - external gear sleeve; 606 - polishing rotating shaft; 607 - hollow rotating shaft; 608 - driven gear; 609 - first grinding disc; 610 - lifting adjustment telescopic rod; 7 - PLC control panel; 8 - shaft-end passive polishing assembly; 801 - Z-axis automatic telescopic rod; 802 - slide table; 803 - second grinding disc; 9 - shaft-body polishing assembly; 901 - cross beam; 902 - Y-axis automatic telescopic rod; 903 - first-level support plate; 904 - second-level support plate; 905 - trapezoidal concave plate; 906 - sandpaper layer; 907 - support rod; 908 - top spring. Detailed implementation manners

[0022] Embodiment 1: As Figures 1-5As shown, a processing and polishing device for the roller shaft head of a straw baler comprises a main frame 1, a lower table 2 is fixedly installed at a lower position inside the main frame 1, a main rotating shaft 4 is rotatably installed on the lower table 2, a four-jaw chuck 5 for clamping the roller shaft head is fixedly installed on the top of the main rotating shaft 4, a shaft end passive polishing assembly 8 is installed on the main frame 1 above the four-jaw chuck 5, and a shaft body polishing assembly 9 is installed on the outer side of the four-jaw chuck 5 and located on the main frame 1; a synchronous height-adjustable multi-disc polishing assembly 6 is arranged on the outer side of the main rotating shaft 4.

[0023] With this design, the main rotating shaft 4 rotates to drive the four-jaw chuck 5 and the clamped roller shaft head to rotate, the shaft end passive polishing assembly 8 is started to grind and polish the upper top surface of the roller shaft head; the shaft body polishing assembly 9 is started to grind and polish the shaft body of the roller shaft head; the synchronous height adjustment multi-disc polishing assembly 6 is started to grind and polish the flange on the roller shaft head, which is convenient to use.

[0024] like Figures 2-5 As shown, a rotation drive unit 3 is arranged below the lower platen 2, and the power output end of the rotation drive unit 3 is transmission-connected to the lower end of the main rotating shaft 4. The rotation drive unit 3 is started to drive the main rotating shaft 4 to drive the four-jaw chuck 5 and the clamped roller shaft head to rotate.

[0025] The rotary drive unit 3 includes an inverted U-shaped motor frame 302 fixedly mounted on the bottom end of the lower platform 2 , a reduction motor 301 is mounted on the top of the motor frame 302 , and a drive shaft of the reduction motor 301 is fixedly connected to the bottom end of the main rotating shaft 4 .

[0026] The reduction motor 301 is started to output rotational power. At this time, the driving shaft of the reduction motor 301 is used to drive the main rotating shaft 4, the four-jaw chuck 5 and the clamped roller shaft head to rotate. The reduction motor 301 provides stable and adjustable power to enable the main rotating shaft 4 to rotate at high speed, so as to ensure the stability of pressure and friction during polishing and achieve comprehensive polishing.

[0027] The main rotary shaft 4 has excellent radial rigidity and axial load-bearing capacity, eliminating flexural deformation during high-speed rotation, while the four-jaw chuck 5 is compatible with the clamping of non-standard shaft heads, and the multi-directional self-centering function quickly corrects the axis of the workpiece, ensuring that the workpiece will not loosen or deviate during high-speed rotation.

[0028] like Figures 6-9As shown, the synchronous height-adjustable multi-disc polishing assembly 6 includes an upper mounting disc 602 sleeved outside the main rotating shaft 4. The upper mounting disc 602 is fixedly installed on the main frame 1. A plurality of polishing rotating shafts 606 are movably installed at equal intervals in a ring near the edge of the upper mounting disc 602. The upper ends of the polishing rotating shafts 606 are all detachably installed with first grinding discs 609. An adjusting assembly for driving the polishing rotating shafts 606 to move up and down is arranged on the lower platen 2.

[0029] In Embodiment 1, the main rotating shaft 4 is rotatably connected to both the lower platen 2 and the upper mounting disc 602. The main rotating shaft 4 can be supported by the upper mounting disc 602 and the lower platen 2 to rotate, improving the stability of the main rotating shaft 4 during rotation.

[0030] In Embodiment 1, the first grinding disc 609 can be fixedly installed at the upper end of the polishing rotating shaft 606 by fastening bolts, which is convenient for disassembling and replacing the first grinding disc 609. Furthermore, the first grinding disc 609 can be selected and replaced in real time according to the size specifications of the roller shaft heads to be polished, enabling multiple first grinding discs 609 to be applicable to grinding and polishing operations on roller shaft heads of different models; improving the scope of use and the use effect.

[0031] Hollow rotating shafts 607 are sleeved outside the polishing rotating shafts 606. The hollow rotating shafts 607 are slidably and drivingly connected to the polishing rotating shafts 606. The upper ends of the hollow rotating shafts 607 are rotatably connected to the upper mounting disc 602. The hollow rotating shafts 607 and the main rotating shaft 4 are drivingly connected through a gear set. The rotation of the main rotating shaft 4 drives the hollow rotating shafts 607 and the polishing rotating shafts 606 to rotate synchronously.

[0032] In Embodiment 1, the number of the polishing rotating shafts 606 is set to four, and hollow rotating shafts 607 are sleeved outside the four polishing rotating shafts 606. The upper ends of the four polishing rotating shafts 606 are all detachably installed with first grinding discs 609.

[0033] A plurality of convex blocks are integrally connected to the outer surface of the polishing rotating shaft 606. A plurality of through grooves are formed in the hollow rotating shaft 607. The convex blocks are slidably installed in the corresponding through grooves. The polishing rotating shaft 606 can move up and down in the hollow rotating shaft 607 through the cooperation of the convex blocks and the through grooves, realizing the adjustment of the height position of the polishing rotating shaft 606; and through the cooperation of the convex blocks and the through grooves, the hollow rotating shaft 607 and the polishing rotating shaft 606 are drivingly connected. The rotation of the hollow rotating shaft 607 drives the polishing rotating shaft 606 to rotate through the cooperation of the convex blocks and the through grooves.

[0034] In addition to Embodiment 1, the polishing rotating shaft 606 and the hollow rotating shaft 607 can also be slidably and drivingly connected by means of spline fitting; an external spline is integrally connected to the outer surface of the polishing rotating shaft 606, and an internal spline groove is provided on the inner surface of the hollow rotating shaft 607, and the external spline and the internal spline groove are slidably and drivingly connected.

[0035] At a position corresponding to the hollow rotating shaft 607 on the upper mounting plate 602, a hollow shaft sleeve 6021 is fixedly installed. The upper end of the hollow rotating shaft 607 is rotatably installed in the hollow shaft sleeve 6021. An annular groove is provided on the inner wall of the hollow shaft sleeve 6021, and an annular flange is provided on the outer wall of the hollow rotating shaft 607, and the annular flange is rotatably connected to the annular groove.

[0036] With such a design, the hollow rotating shaft 607 is rotatably installed on the upper mounting plate 602 through the hollow shaft sleeve 6021, which is convenient for assembly and installation. The hollow shaft sleeve 6021 is used to improve the stability of the hollow rotating shaft 607 during rotation.

[0037] In addition to Embodiment 1, a bearing seat can also be used to achieve a rotational connection between the upper mounting plate 602 and the upper end of the hollow rotating shaft 607.

[0038] The gear set includes a driven gear 608 fixedly installed on the outer surface of the hollow rotating shaft 607, and an external gear sleeve 605 is fixedly installed on the outer surface of the main rotating shaft 4, and the external gear sleeve 605 and the driven gear 608 are meshed with each other.

[0039] The rotation of the main rotating shaft 4 drives the external gear sleeve 605 to rotate. The external gear sleeve 605 is meshed with the driven gear 608. The rotation of the external gear sleeve 605 can drive the hollow rotating shaft 607 to rotate through the transmission of the driven gear 608. The rotation of the hollow rotating shaft 607 can drive the polishing rotating shaft 606 and the first grinding disc 609 to rotate, which is convenient for use.

[0040] In Embodiment 1, the outer surface diameter of the external gear sleeve 605 is larger than the outer surface diameter of the driven gear 608, that is, the external gear sleeve 605 and the driven gear 608 are in an accelerating transmission. The rotation of the main rotating shaft 4 drives the polishing rotating shaft 606 to rotate at a high speed. At this time, the rotation speed of the polishing rotating shaft 606 is greater than the rotation speed of the main rotating shaft 4. Furthermore, the flange on the roller shaft head can be polished by the first grinding disc 609, which is convenient for use.

[0041] The adjusting assembly includes at least one Z-axis screw electric linear module 601 fixedly installed on the lower platen 2. A lower supporting ring 603 is installed on the moving end of the Z-axis screw electric linear module 601, and the bottom end of the polishing rotating shaft 606 is rotatably connected to the top end of the lower supporting ring 603.

[0042] In the present Embodiment 1, the number of the Z-axis screw electric linear modules 601 is one, and one Z-axis screw electric linear module 601 is arranged vertically. When the Z-axis screw electric linear module 601 is started, its moving end drives the lower supporting ring 603 to move up and down.

[0043] In the present Embodiment 1, the Z-axis screw electric linear module 601 is a prior art and can be directly purchased on the market. Its specific structure includes a slide rail and a slider, and an electric screw module installed on the slide rail for driving the slider to move up and down.

[0044] A plurality of telescopic columns 604 are installed between the upper surface of the lower supporting ring 603 and the lower surface of the upper mounting plate 602; the plurality of telescopic columns 604 are arranged in an annular and equidistant manner.

[0045] With such a design, when the Z-axis screw electric linear module 601 is started to drive the lower supporting ring 603 to move up and down, the telescopic columns 604 can adaptively extend or contract. At this time, the telescopic columns 604 can guide the movement of the lower supporting ring 603 to improve the use effect.

[0046] In the present Embodiment 1, a plurality of lower shaft head sleeves 6031 are fixedly installed at the top end of the lower supporting ring 603. The lower shaft head sleeves 6031 are coaxially arranged with the corresponding polishing rotating shafts 606. The bottom end of the polishing rotating shaft 606 extends into the interior of the lower shaft head sleeve 6031 and is rotationally matched with the lower shaft head sleeve 6031.

[0047] With such a design, through the combined use of the hollow shaft sleeve 6021 and the lower shaft head sleeve 6031, the purposes of stably supporting the hollow rotating shaft 607 and the polishing rotating shaft 606 to rotate can be achieved respectively, improving the use effect.

[0048] In the present Embodiment 1, the working principle of the synchronous height-adjustable multi-disk polishing assembly 6 is as follows: First, the roller shaft head to be polished is fixedly installed on the four-jaw chuck 5. Then, the staff starts the rotation driving unit 3 and the synchronous height-adjustable multi-disk polishing assembly 6. The rotation driving unit 3 is used to drive the main rotating shaft 4 to drive the four-jaw chuck 5 and the clamped roller shaft head to rotate; the Z-axis screw electric linear module 601 is started to drive the lower supporting ring 603 to move up and down along the vertical direction of the main rotating shaft 4. At this time, the lower supporting ring 603 drives the polishing rotating shaft 606 and the first polishing disk 609 to move down or up until the lower surface of the first polishing disk 609 contacts the upper surface of the flange on the roller shaft head. When the main rotating shaft 4 and the four-jaw chuck 5 are driven to rotate by the rotation driving unit 3, the main rotating shaft 4 drives the driven gear 608 and the hollow rotating shaft 607 to rotate through the external gear sleeve 605. At this time, the hollow rotating shaft 607 and the polishing rotating shaft 606 rotate together through keyway fit, so that the first polishing disk 609 polishes the upper surface of the flange on the roller shaft head.

[0049] As shown Figure 10 in FIG. 4, the shaft-end passive polishing assembly 8 includes a Z-axis automatic telescopic rod 801 installed at the top end of the main frame 1. The Z-axis automatic telescopic rod 801 is vertically arranged. A sliding table 802 is installed on the telescopic end of the Z-axis automatic telescopic rod 801. A second grinding disc 803 is detachably installed on the lower surface of the sliding table 802. The second grinding disc 803 is coaxially arranged with the main rotating shaft 4.

[0050] With such a design, the working principle of the shaft-end passive polishing assembly 8 is as follows: The Z-axis automatic telescopic rod 801 is activated to push the sliding table 802 and the second grinding disc 803 downward until the lower grinding surface of the second grinding disc 803 contacts the upper end surface of the roller shaft head. At this time, during the rotation of the roller shaft head, the second grinding disc 803 performs grinding and polishing operations, and the contact pressure of the second grinding disc 803 on the upper end surface of the roller shaft head can be adjusted by the telescopic movement of the Z-axis automatic telescopic rod 801, thereby realizing uniform grinding and polishing operations on the upper end surface of the roller shaft head.

[0051] In this Embodiment 1, the four side surfaces of the sliding table 802 are respectively slidably connected to the main frame 1 through slide rails and sliders. The slide rails and the sliders are slidably connected. The slide rails are fixedly installed on the main frame 1, and the sliders are fixedly installed on the outer side surfaces of the sliding table 802.

[0052] In this Embodiment 1, the second grinding disc 803 can be detachably installed on the lower surface of the sliding table 802 by means of bonding or bolt connection, which is convenient for disassembling and replacing the second grinding disc 803.

[0053] In this Embodiment 1, the Z-axis automatic telescopic rod 801 is one of a hydraulic cylinder, a telescopic cylinder, and an electric telescopic rod.

[0054] As shown Figures 9-10 in FIG. 5, the shaft-body polishing assembly 9 includes a cross beam 901 provided on the outer wall of the main frame 1 below the sliding table 802. A Y-axis automatic telescopic rod 902 is installed on the outer wall of one side of the cross beam 901. The Y-axis automatic telescopic rod 902 is horizontally arranged. A first-level support plate 903 is installed on the telescopic end of the Y-axis automatic telescopic rod 902; when the Y-axis automatic telescopic rod 902 is activated, it drives the first-level support plate 903 to move horizontally through the telescopic end.

[0055] A second-level support plate 904 is elastically installed on the outer wall of the first-level support plate 903 away from the cross beam 901. A trapezoidal concave plate 905 is integrally formed on the outer wall of one side of the second-level support plate 904. A sandpaper layer 906 is detachably installed on the side of the trapezoidal concave plate 905 away from the second-level support plate 904.

[0056] A plurality of support rods 907 are fixedly installed on the back surface of the secondary support plate 904. The plurality of support rods 907 are arranged in parallel and at intervals. The other ends of the support rods 907 respectively slide through the primary support plate 903 and the cross beam 901 and extend to the side of the cross beam 901 away from the primary support plate 903.

[0057] A top spring 908 is sleeved on the support rod 907 between the primary support plate 903 and the secondary support plate 904; both ends of the top spring 908 are fixedly connected to the primary support plate 903 and the secondary support plate 904 respectively.

[0058] With such a design, the support rod 907 is used to guide the movement of the primary support plate 903 and the secondary support plate 904, improving the stability of the primary support plate 903 and the secondary support plate 904 during movement. Moreover, the top spring 908 outputs elastic force to act on the primary support plate 903 and the secondary support plate 904, enabling an elastic connection between the primary support plate 903 and the secondary support plate 904, which is convenient for use.

[0059] In the present Embodiment 1, the working principle of the shaft body polishing assembly 9 is as follows: The Y-axis automatic telescopic rod 902 starts and drives the primary support plate 903, the secondary support plate 904, and the sandpaper layer 906 to move towards the direction close to the roller shaft head through the telescopic end until the sandpaper layer 906 contacts the outer wall surface of the roller shaft head. At this time, the sandpaper layer 906 is in close contact with the outer wall surface of the workpiece, and the rotating roller shaft head is polished by using pressure and friction to reduce the defects and unevenness of the shaft body.

[0060] In the present Embodiment 1, the sandpaper layer 906 can be detachably installed on the secondary support plate 904 by means of bonding or bolt connection, which is convenient for disassembling and replacing the sandpaper layer 906.

[0061] In the present Embodiment 1, the Y-axis automatic telescopic rod 902 is one of a hydraulic cylinder, a telescopic air cylinder, and an electric telescopic rod.

[0062] As Figures 1-11 shown, a PLC control panel 7 is installed on the outer wall of one side of the main frame 1. The control output end of the PLC control panel 7 is electrically connected to the control input ends of the rotary drive unit 3, the synchronous height-adjustable multi-disk polishing assembly 6, the shaft end passive polishing assembly 8, and the shaft body polishing assembly 9 respectively.

[0063] In the present Embodiment 1, the PLC control panel 7 is a prior art. Its overall structure includes a PLC controller. The output end and the input end of the PLC controller are bidirectionally electrically connected to a control screen, and the control screen is used to display control parameters and perform adjustment operations on the control parameters.

[0064] The PLC control panel 7 outputs a control signal to control the rotation drive unit 3 to start or stop. At this time, the reduction motor 301 starts to drive the main rotating shaft 4 to rotate at a set speed, and the main rotating shaft 4 drives the clamped roller shaft head to rotate through the four-jaw chuck 5.

[0065] The PLC control panel 7 outputs a control signal to control the Z-axis screw electric linear module 601 of the synchronous height-adjustable multi-disk polishing assembly 6 to start. At this time, the Z-axis screw electric linear module 601 works at a set lifting distance and direction. The start of the Z-axis screw electric linear module 601 is used to drive the lower supporting ring 603 to move up and down along the vertical direction of the main rotating shaft 4. The lower supporting ring 603 drives the polishing rotating shaft 606 and the first grinding disk 609 to move up and down, so that the lower surface of the first grinding disk 609 contacts the upper surface of the flange on the roller shaft head. At this time, the upper surface of the flange on the roller shaft head is polished by the first grinding disk 609.

[0066] The PLC control panel 7 outputs a control signal to control the Z-axis automatic telescopic rod 801 of the passive polishing assembly 8 at the shaft end to start. At this time, the Z-axis automatic telescopic rod 801 works at a set lifting distance and direction. The start of the Z-axis automatic telescopic rod 801 is used to push the slide table 802 and the second grinding disk 803 to move down until the lower grinding surface of the second grinding disk 803 contacts the upper end surface of the roller shaft head. At this time, the roller shaft head is polished by the second grinding disk 803 during rotation.

[0067] The PLC control panel 7 outputs a control signal to control the Y-axis automatic telescopic rod 902 of the shaft body polishing assembly 9 to start. At this time, the Y-axis automatic telescopic rod 902 works at a set telescopic distance and direction. The start of the Y-axis automatic telescopic rod 902 drives the first-level support plate 903, the second-level support plate 904 and the sandpaper layer 906 to move towards the roller shaft head through the telescopic end until the sandpaper layer 906 contacts the outer wall surface of the roller shaft head. At this time, the sandpaper layer 906 is in close contact with the outer wall surface of the workpiece, and the rotating roller shaft head is polished by using pressure and friction to reduce the defects and unevenness of the shaft body.

[0068] In this Embodiment 1, the four-jaw chuck 5 is a prior art and can be directly purchased on the market, and its specific structure will not be described in detail here.

[0069] As Figures 1-11 shown, the present invention also provides a processing and polishing method for a roller shaft head of a straw baler, based on the above-mentioned processing and polishing device for a roller shaft head of a straw baler, including the following steps: S101: Check whether all parts of the processing and polishing device for the roller shaft head of the straw baler are in good condition, and then clamp one end of the roller shaft head on the four-claw chuck 5 so that the roller shaft head has no radial deviation. After the clamping is completed, the staff sets the polishing parameters according to the size specifications of the roller shaft head and the polishing requirements, including the rotation speed of the rotary drive unit 3, the downward pressure stroke of the synchronous height-adjusting multi-disc polishing assembly 6, the downward pressure stroke of the shaft end passive polishing assembly 8, and the feed amount of the shaft body polishing assembly 9; In the step S101, the lubrication state of the rotary drive unit 3, the concentricity of the main rotary shaft 4 and the cleanliness of the four-jaw chuck 5 are checked to ensure that all parts of the processing and polishing device for the roller shaft head of the straw baler are in good working condition.

[0070] S102: After debugging, the staff starts the rotation drive unit 3 through the PLC control panel 7, so that the main rotary shaft 4, the four-jaw chuck 5 and the roller shaft head reach the preset high-speed rotation state, and at this time the synchronous height-adjustable multi-disc polishing assembly 6 is started to perform a comprehensive polishing operation on the upper surface of the flange of the roller shaft head; the shaft end passive polishing assembly 8 is started to perform a grinding and polishing operation on the upper top surface of the roller shaft head; the shaft body polishing assembly 9 is started to perform a grinding and polishing operation on the shaft body of the roller shaft head; then the operating status of the device is observed in real time to ensure that the polishing pressure is evenly distributed to avoid local over-polishing or under-polishing.

[0071] In the step S102, the working principle of the rotation drive unit 3 is: the power output end of the reduction motor 301 is connected to the lower end of the main rotating shaft 4, and the reduction motor 301 is started to make the drive shaft output rotation, which is used to drive the main rotating shaft 4, the four-jaw chuck 5 and the clamped roller shaft head to rotate.

[0072] In the step S102, the working principle of the synchronous height-adjustable multi-disc polishing assembly 6 is as follows: the Z-axis screw electric linear module 601 is started to drive the lower supporting ring 603 to move up and down along the vertical direction of the main rotating shaft 4. At this time, the lower supporting ring 603 drives the polishing shaft 606 and the first grinding disc 609 to move down or up until the lower surface of the first grinding disc 609 contacts the upper surface of the flange on the roller shaft head. When the main rotating shaft 4 is driven to rotate by the rotation drive unit 3, the main rotating shaft 4 drives the driven gear 608 and the hollow rotating shaft 607 to rotate through the outer gear sleeve 605. At this time, the hollow rotating shaft 607 drives the polishing shaft 606 to rotate together, so that the first grinding disc 609 performs a grinding and polishing operation on the upper surface of the flange on the roller shaft head.

[0073] In the step S102, the working principle of the passive polishing assembly at the shaft end 8 is as follows: The Z-axis automatic telescopic rod 801 starts to work with a set lifting distance and direction. The Z-axis automatic telescopic rod 801 is used to push the sliding table 802 and the second grinding disc 803 downward until the lower grinding surface of the second grinding disc 803 contacts the upper end surface of the roller shaft head. At this time, the roller shaft head is polished by the second grinding disc 803 during rotation.

[0074] In the step S102, the working principle of the polishing assembly for the shaft body 9 is as follows: The Y-axis automatic telescopic rod 902 starts to work with a set telescopic distance and direction. The Y-axis automatic telescopic rod 902 drives the first-level support plate 903, the second-level support plate 904, and the sandpaper layer 906 to move towards the roller shaft head through its telescopic end until the sandpaper layer 906 contacts the outer wall surface of the roller shaft head. At this time, the sandpaper layer 906 is in close contact with the outer wall surface of the workpiece, and the rotating roller shaft head is polished by using pressure and friction to reduce defects and unevenness on the shaft body.

[0075] S103: After polishing, the staff closes the rotary drive unit 3 through the PLC control panel 7, stops the rotation of the main rotating shaft 4, the four-jaw chuck 5, and the roller shaft head, resets the synchronous height-adjustable multi-disc polishing assembly 6, the passive polishing assembly at the shaft end 8, and the polishing assembly for the shaft body 9, removes the roller shaft head from the four-jaw chuck 5 and conducts a surface inspection.

[0076] In the step S103, the surface of the roller shaft head after polishing is smooth, without scratches or defects. The staff locally repairs and grinds the non-compliant areas as needed and cleans the polishing medium remaining on the surface of the workpiece.

[0077] S104: After completing the polishing, the staff cleans and maintains the entire device, removes the remaining polishing materials, lubricates the transmission parts of the machine, ensures that the device is in good working condition, and prepares for the next operation.

[0078] Embodiment 2: As Figure 12 shown, based on the above Embodiment 1, in this Embodiment 2, the synchronous height-adjustable multi-disc polishing assembly 6 can also adopt Figure 12 the structure shown. The adjustment component of the synchronous height-adjustable multi-disc polishing assembly 6 includes at least one lifting adjustment telescopic rod 610. The installation end of the lifting adjustment telescopic rod 610 is fixedly installed on the upper mounting plate 602, and the telescopic end of the lifting adjustment telescopic rod 610 is arranged vertically downward and fixedly connected to the lower supporting ring 603.

[0079] In the second embodiment, one lifting and adjusting telescopic rod 610 can be adopted. When one lifting and adjusting telescopic rod 610 is adopted, a plurality of telescopic columns 604 are further installed between the upper surface of the lower supporting ring 603 and the lower surface of the upper mounting plate 602; the plurality of telescopic columns 604 are arranged at equal intervals in a ring shape.

[0080] The lifting and adjusting telescopic rod 610 is activated to drive the lower supporting ring 603 to move up and down, so as to drive the polishing rotating shaft 606 and the first grinding disc 609 to move up and down. At this time, the plurality of telescopic columns 604 cooperate with the telescopic movement to guide the movement of the lower supporting ring 603.

[0081] Outside the second embodiment, a plurality of lifting and adjusting telescopic rods 610 can be adopted. When a plurality of lifting and adjusting telescopic rods 610 are adopted, the plurality of lifting and adjusting telescopic rods 610 are arranged at equal intervals in a ring shape, and the mounting ends of the lifting and adjusting telescopic rods 610 are fixedly installed on the upper mounting plate 602; the telescopic ends of the lifting and adjusting telescopic rods 610 are fixedly connected to the lower supporting ring 603; the plurality of lifting and adjusting telescopic rods 610 work synchronously to drive the lower supporting ring 603 to move up and down, so as to drive the polishing rotating shaft 606 and the first grinding disc 609 to move up and down.

[0082] In the second embodiment, the lifting and adjusting telescopic rod 610 is one of a telescopic cylinder, a hydraulic cylinder, and an electric telescopic rod.

[0083] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing and polishing device for the roller shaft head of a straw baler, characterized in that: The main frame (1) comprises a main frame, a lower table (2) is fixedly mounted at a lower position inside the main frame (1), a main rotary shaft (4) is rotatably mounted on the lower table (2), a four-jaw chuck (5) for clamping a roller shaft head is fixedly mounted on the top of the main rotary shaft (4), a shaft end passive polishing assembly (8) is mounted on the main frame (1) above the four-jaw chuck (5), and a shaft body polishing assembly (9) is mounted on the outside of the four-jaw chuck (5) and located on the main frame (1); a synchronous height-adjustable multi-disc polishing assembly (6) is arranged on the outside of the main rotary shaft (4); The synchronous height-adjustable multi-disc polishing assembly (6) comprises an upper mounting plate (602) sleeved on the outside of the main rotating shaft (4), the upper mounting plate (602) being fixedly mounted on the main frame (1), a plurality of polishing shafts (606) being movably mounted in a circular shape and at equal intervals near the edge of the upper mounting plate (602), the upper ends of the polishing shafts (606) being detachably mounted with first grinding plates (609), and an adjusting component for driving the polishing shafts (606) to move up and down is arranged on the lower plate (2).

2. The processing and polishing device for the roller shaft head of a straw baler according to claim 1, characterized in that: The polishing shaft (606) is sleeved with a hollow shaft (607) on its exterior. The hollow shaft (607) is slidably and transmission-connected to the polishing shaft (606). The upper end of the hollow shaft (607) is rotationally connected to the upper mounting plate (602). The hollow shaft (607) is transmission-connected to the main rotating shaft (4) via a gear set. The rotation of the main rotating shaft (4) drives the hollow shaft (607) and the polishing shaft (606) to rotate synchronously.

3. A processing and polishing device for the roller shaft head of a straw baler according to claim 2, characterized in that: The gear set comprises a driven gear (608) fixedly mounted on the outer surface of a hollow rotating shaft (607); an outer gear sleeve (605) is fixedly mounted on the outer surface of the main rotating shaft (4); the outer gear sleeve (605) and the driven gear (608) are meshed with each other.

4. A processing and polishing device for the roller shaft head of a straw baler according to claim 3, characterized in that: The adjustment assembly comprises at least one Z-axis screw electric linear module (601) fixedly mounted on the lower platform (2); a lower supporting ring (603) is mounted on the movable end of the Z-axis screw electric linear module (601); and the bottom end of the polishing shaft (606) is rotatably connected to the top end of the lower supporting ring (603).

5. A processing and polishing device for the roller shaft head of a straw baler according to claim 4, characterized in that: A plurality of telescopic columns (604) are installed between the upper surface of the lower supporting ring (603) and the lower surface of the upper mounting plate (602); the plurality of telescopic columns (604) are arranged in a ring shape at equal intervals.

6. A processing and polishing device for the roller shaft head of a straw baler according to claim 1, characterized in that: A rotary drive unit (3) is provided below the lower platform (2), and a power output end of the rotary drive unit (3) is transmission-connected to the lower end of the main rotary shaft (4). The rotary drive unit (3) is started to drive the main rotary shaft (4) to drive the four-jaw chuck (5) and the clamped roller shaft head to rotate.

7. A processing and polishing device for the roller shaft head of a straw baler according to claim 1, characterized in that: The shaft end passive polishing assembly (8) comprises a Z-axis automatic telescopic rod (801) mounted on the top of the main frame (1); a slide table (802) is mounted on the telescopic end of the Z-axis automatic telescopic rod (801); a second grinding disc (803) is detachably mounted on the lower surface of the slide table (802); and the second grinding disc (803) is coaxially arranged with the main rotating shaft (4).

8. A processing and polishing device for the roller shaft head of a straw baler according to claim 1, characterized in that: The shaft body polishing assembly (9) includes a cross beam (901) disposed on the outer wall of the main frame (1) below the sliding table (802), a Y-axis automatic telescopic rod (902) mounted on the outer wall of one side of the cross beam (901), a primary support plate (903) mounted on the telescopic end of the Y-axis automatic telescopic rod (902), a secondary support plate (904) elastically mounted on the outer wall of the side of the primary support plate (903) away from the cross beam (901), a trapezoidal concave plate (905) integrally formed on the outer wall of one side of the secondary support plate (904), and a sandpaper layer (906) detachably mounted on the side of the trapezoidal concave plate (905) away from the secondary support plate (904).

9. A processing and polishing device for the roller shaft head of a straw baler according to claim 8, characterized in that: A plurality of support rods (907) are fixedly mounted on the back surface of the secondary support plate (904), the other ends of the support rods (907) respectively slide through the primary support plate (903) and the cross beam (901), and a top spring (908) is sleeved on the support rod (907) between the primary support plate (903) and the secondary support plate (904).

10. A processing and polishing method for the roller shaft head of a straw baler, based on the processing and polishing device for the roller shaft head of a straw baler according to any one of claims 1-9, characterized in that: It includes the following steps: S101: Check whether all components of the processing and polishing device for the roller shaft head of the straw baler are in good condition, then clamp one end of the roller shaft head on the four-jaw chuck (5) to make the roller shaft head have no radial offset. After clamping, the staff sets the polishing parameters according to the size specification and polishing requirements of the roller shaft head, including the rotation speed of the rotary drive unit (3), the downward stroke of the synchronous height-adjustable multi-disc polishing assembly (6), the downward stroke of the shaft end passive polishing assembly (8), and the feed rate of the shaft body polishing assembly (9). After debugging, start the rotary drive unit (3) to make the main rotary shaft (4), the four-jaw chuck (5), and the roller shaft head reach the preset high-speed rotation state, and the synchronous height-adjustable multi-disc polishing assembly (6) starts to comprehensively polish the upper surface of the flange of the roller shaft head. The shaft end passive polishing assembly (8) starts to perform grinding and polishing operations on the upper top surface of the roller shaft head; the shaft body polishing assembly (9) starts to perform grinding and polishing operations on the shaft body of the roller shaft head. S103: After polishing, the staff turns off the rotary drive unit (3) to stop the rotation of the main rotary shaft (4), the four-jaw chuck (5), and the roller shaft head, and reset the synchronous height-adjustable multi-disc polishing assembly (6), the shaft end passive polishing assembly (8), and the shaft body polishing assembly (9), remove the roller shaft head from the four-jaw chuck (5) and perform surface inspection. S104: After polishing, the staff cleans and maintains the whole device to ensure that the device has a good working state and prepares for the next operation.

Images