An automatic multi-station milling and sanding machine

Abstract

The present invention relates to an automatic multi-station milling machine, comprising a base rotatably equipped with a support disk at a center position, a positioning shaft rotatably equipped on the support disk, each positioning shaft is evenly spaced along the circumference of the support disk, a clamping frame is fixed on the support disk, and a plurality of clamping cylinders are arranged on the clamping frame; a milling frame and a sanding frame are also rotatably equipped on the base, and the milling frame has a milling cutter; the sanding frame has a pulley, and a sanding belt is wound around the pulley; a swing driving machine is also arranged on the base; a multi-station divider is also arranged on the base; a circumferential driving mechanism in place is also arranged on the base, and the circumferential driving mechanism in place includes a driving shaft, and a rotation-stopping structure that cooperates with the circumferential rotation-stopping of the positioning shaft is arranged on the driving shaft, and a driving motor in place is connected to the driving shaft in transmission, and the circumferential driving mechanism in place also includes a circumferential sensor arranged on the side wall of the driving shaft and between the base. The equipment has high integration, and realizes automatic feeding of the overall process, does not require manual intervention, and has a high degree of automation.

Description

Technical Field

[0001] The present invention relates to the field of woodworking machinery and equipment, and particularly to an automatic multi-station milling and sanding machine. Background Art

[0002] After artificial boards are processed, cut and manufactured, two processes of milling the side edges and sanding are required. Through milling the side edges, the excess dimensions and chamfering at the corner positions are processed, and through sanding, the surface burrs and rough surfaces are sanded flat to ensure product quality. The existing milling and sanding processes are respectively completed by a milling machine and a sanding machine. The milling machine horizontally lays the board on a positioning fixture, and a template with pre-processed dimensions is set on the positioning fixture. By automatically rotating the positioning fixture or circumferentially rotating the milling cutter, the board is milled to the set dimensions; the sanding machine fixes the board through the positioning fixture, the positioning fixture drives the board to rotate, and the surface of the board is sanded flat by a sanding belt. However, since the milling machine and the sanding machine are respectively used for processing, it is necessary to purchase a milling machine and a sanding machine respectively, which greatly increases the enterprise's equipment and fixed asset investment, increases the power consumption, and also increases the cost of board processing. At the same time, this method of milling and sanding with two sets of equipment also increases the floor area of the equipment and to a certain extent affects the processing efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic multi-station milling and sanding machine to solve the problems of increased cost and affected processing efficiency caused by the need for two sets of equipment for milling and sanding of boards in the prior art.

[0004] To solve the above problems, the automatic multi-station milling and sanding machine involved in the present invention adopts the following technical solutions:

[0005] The automatic multi-station milling and sanding machine includes a base. A loading and unloading station, a milling station, and a sanding station are sequentially arranged around the circumference of the base. A support disk is rotatably assembled at the central position of the base. A positioning shaft extending vertically is rotatably assembled on the support disk. There are at least three positioning shafts, and the positioning shafts are evenly spaced along the circumference of the support disk and sequentially move at each station following the rotation of the support disk. A clamping frame is fixed on the support disk, and a plurality of clamping cylinders are arranged on the clamping frame. A clamping space for clamping a horizontally placed board is formed between each clamping cylinder and each positioning shaft;

[0006] A milling frame and a sanding frame are also rotatably assembled on the base. A milling cutter extending vertically is provided at the corresponding milling station on the milling frame; a pulley arranged vertically is provided at the corresponding sanding station on the sanding frame, and a sanding belt is wound around the pulley; a swing driving mechanism for driving the milling frame and the sanding frame to reciprocate is also provided on the base. The swing driving mechanism drives the milling frame and the sanding frame to reciprocate so that the milling cutter and the sanding belt respectively fit the board for working and move away from the board to avoid.

[0007] The base is also provided with a multi-station divider for driving the support plate to rotate intermittently so that each positioning shaft stops at each station;

[0008] A circumferential driving mechanism is also provided at the position corresponding to the milling station and the sanding station on the base, the circumferential driving mechanism comprises a driving shaft rotatably arranged on the base, the axis of the driving shaft is consistent with the axis of the positioning shaft in place, the driving shaft is provided with a rotation-stopping structure which cooperates with the circumferential rotation-stopping of the positioning shaft in place, the driving shaft is transmission-connected with a driving motor in place, and the circumferential driving mechanism in place also comprises a circumferential sensor arranged between the side wall of the driving shaft and the base;

[0009] The base is also provided with a controller, which is connected to the circumferential sensor for sampling, and is respectively controlled and connected to the swing drive mechanism, the in-position drive motor and the multi-station divider, so that after the controller controls the multi-station divider to intermittently drive the support plate to rotate into position, the milling cutter and the sanding belt are controlled to fit the plate, and the drive motor is controlled to drive the positioning shaft to rotate circumferentially for one circle.

[0010] The beneficial effects of the present invention are as follows: compared with the prior art, the plate automated multi-station milling machine involved in the present invention, in actual use, clamps and fixes the plate through the clamping cylinder and the positioning shaft, the supporting plate is driven by the multi-station divider to rotate intermittently, and after the plate is moved to the milling station, the positioning shaft and the driving shaft are locked, and then the controller controls the milling frame to swing to a position that fits the edge of the plate, and the plate is milled according to the size to be processed, the driving shaft is driven to rotate one circle, driving the positioning shaft to rotate, and then driving the plate to rotate, the plate rotates one circle, milling is completed, and then the supporting plate rotates to transport the plate to the sanding station. At the leveling station, the same operating process is used to achieve the sanding of the side of the plate with the sanding belt, and then it is moved to the loading and unloading station to complete the unloading and replace the loading operation, and the cycle is repeated; the milling process and the sanding process are integrated on one device, the equipment has high integration, and the overall process is automatically fed, no manual intervention is required, and the degree of automation is high; in addition, it is only necessary to load and unload the equipment at regular intervals, the overall operation is simple, a single device can complete the milling operation, and the equipment footprint is reduced. At the same time, the switching between the various stations is achieved by rotating the support plate, and the processing efficiency is greatly improved.

[0011] Furthermore, the lower end of the positioning shaft is a quadrilateral prism, and the anti-rotation structure includes a U-shaped through groove arranged at the upper end of the driving shaft. The thickness of the quadrilateral prism is consistent with the groove width of the U-shaped through groove so that after the positioning shaft is in place, its lower end is inserted into the U-shaped through groove to achieve anti-rotation fit.

[0012] Furthermore, a positioning ring coaxially arranged with the supporting disk is fixed on the base below the corresponding supporting disk, and the outer peripheral surface of the positioning ring is fitted and positioned with the outer side wall of the positioning shaft.

[0013] Further, one side surface of the quadrilateral prism of the positioning shaft is an arc surface that fits the outer contour of the positioning ring. Concave avoidance grooves are provided at positions corresponding to the milling station and the sanding station on the outer side wall of the positioning ring. A radial part of the upper end of the driving shaft is located in the avoidance groove. During the rotation of the driving shaft, one side wall of the U-shaped through groove can be located within the avoidance groove so that the positioning shaft can slide into the U-shaped through groove.

[0014] Further, the circumferential sensor includes a distance sensor fixed on the base, and further includes a trigger rod arranged on the side wall of the driving shaft and arranged at the same height as the receiving end of the distance sensor.

[0015] Further, the upper end surface of the positioning shaft has a fixing structure for fixing the milling and sanding template. The lower end of the milling cutter is movably connected with a milling positioning wheel for being flush and fitting with the milling and sanding template. The outer diameter of the positioning wheel is the same as the outer diameter of the milling cutter; the lower end of the belt pulley is connected with a sanding positioning wheel for being flush and fitting with the milling and sanding template, and the outer diameter of the sanding positioning wheel is the same as the outer contour diameter of the sand belt.

[0016] Further, a clamping plate is fixed at the lower end of the clamping cylinder. A guide hole is eccentrically arranged on one side of the clamping plate. A guide rod is fixed on the clamping frame corresponding to the axis of the guide hole, and the guide rod is guidingly assembled with the guide hole.

[0017] Further, a vertical frame is provided at the rear side of each station on the base. One ends of the milling frame and the sanding frame are respectively rotatably assembled on the left and right sides of the vertical frame, and the rotation axis extends vertically. The swing driving mechanism includes a milling cylinder movably connected between the vertical frame and the milling frame, and further includes a sanding cylinder movably connected between the vertical frame and the sanding frame.

[0018] Further, a cross beam extends forward from the top of the vertical frame. Hinge shafts extending vertically are respectively arranged on the left and right sides of the cross beam. Support shafts extending vertically are rotatably assembled on both the milling frame and the sanding frame. The milling cylinder and the sanding cylinder are respectively connected between the corresponding hinge shaft and the support shaft.

[0019] Further, a plurality of positioning holes are provided on the support disk, and support bearings are fixed in the positioning holes. Each positioning shaft is inserted through the support bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments:

[0021] Figure 1 Structural schematic diagram of a specific embodiment of the automatic multi-station milling and sanding machine of the present invention;

[0022] Figure 2 is Figure 1 the rear view three-dimensional state diagram of

[0023] Figure 3 is Figure 1 the structural schematic diagram of the positioning and clamping assembly on the support disk in

[0024] Figure 4 is Figure 1 the partial enlarged view at A of

[0025] Figure 5 is Figure 1 the state schematic diagram of the milling cutter cooperating with the plate in

[0026] Figure 6 is Figure 1 the structural schematic diagram of the positioning ring in

[0027] Figure 7 is Figure 1 the structural schematic diagram of the drive shaft in

[0028] Figure 8 is Figure 1 the structural schematic diagram of the positioning shaft in

[0029] Figure 9 is the structural schematic diagram of an adapted milling and sanding template of the present invention;

[0030] Figure 10 is the structural schematic diagram of the plate to be processed.

[0031] Explanation of reference numerals: 1 - base; 2 - vertical frame; 3 - cross beam; 4 - support feet; 5 - loading and unloading station; 6 - milling station; 7 - sanding station; 8 - multi-station divider; 9 - support disk; 10 - support bearing; 11 - positioning shaft; 12 - milling and sanding template; 13 - plate; 14 - clamping cylinder; 15 - column; 16 - cross bracket; 17 - clamping plate; 18 - guide sleeve; 19 - guide rod; 20 - milling frame; 21 - first hinge shaft; 22 - milling cutter; 23 - milling motor; 24 - sanding frame; 25 - second hinge shaft; 26 - pulley; 27 - sand belt; 28 - sanding motor; 29 - adjusting frame; 30 - milling cylinder; 31 - sanding cylinder; 32 - support sleeve; 33 - support plate; 34 - support rod; 35 - ferrule; 36 - U-shaped bracket; 37 - third hinge shaft; 38 - milling positioning wheel; 39 - sanding positioning wheel; 40 - drive box; 41 - drive shaft; 42 - distance sensor; 43 - trigger rod; 44 - quadrilateral prism; 45 - U-shaped through groove; 46 - positioning ring; 47 - avoidance groove; 48 - control screen. Detailed implementation manners

[0032] To make the technical objectives, technical solutions, and beneficial effects of the present invention clearer, the following further describes the technical solutions of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0033] A specific embodiment of the automatic multi-station milling and sanding machine involved in the present invention is as Figures 1 to 10 shown. The milling and sanding machine includes a base 1, a support disk 9, a multi-station divider 8, a milling frame 20, a sanding and leveling frame 24, and various driving mechanisms, etc.

[0034] Among them, the base 1 is used to support on the ground and is the basic carrier for all other components. In this embodiment, it is a rectangular box structure, and its upper end surface forms the overall installation plane. Support feet 4 are provided at the bottom of the base 1, and a switch door is provided on one side of the base 1. Of course, in other embodiments, the structure of the base 1 is not specifically limited, and those skilled in the art can design it arbitrarily according to actual needs. A vertical frame 2 extending up and down is provided at the rear side of the upper end surface of the base 1. The vertical frame 2 is a box structure, and a cross beam 3 extends forward from the top of the vertical frame 2. In this embodiment, three workstations are arranged at positions corresponding to each side of the base 1, namely the loading and unloading workstation 5 at the front side, the milling workstation 6 on the left side, and the sanding and leveling workstation 7 on the right side.

[0035] The structure and working principle of the multi-station divider 8 are the same as those in the prior art and will not be described in detail. Its main function is to provide intermittent one-way rotational output power to its output shaft. In this embodiment, the multi-station divider 8 is fixed at the central position of the upper end surface of the base 1, and the axis of its output shaft is located at the central position of the base 1. A main drive motor (not shown in the figure) for driving the multi-station divider 8 to work is arranged inside the base 1 below.

[0036] The support plate 9 is integrally in a circular disc structure and is horizontally rotatably arranged directly above the base 1. The center position at the bottom of the support plate 9 is fixedly connected to the output shaft of the above-mentioned multi-station divider 8, so as to realize the circumferential intermittent drive of the support plate 9. In this embodiment, a positioning and clamping assembly for clamping and positioning the plate 13 is arranged on the support plate 9. Specifically, four positioning holes are eccentrically arranged on the support plate 9, and the positioning holes penetrate through the support plate 9 up and down. Each positioning hole is evenly distributed at intervals around the circumference of the support plate 9. A support bearing 10 is installed in the positioning hole, and a positioning shaft 11 is rotatably installed in the support bearing 10. The lower end of the positioning shaft 11 extends downward below the support plate 9, and the upper end of the positioning shaft 11 protrudes above the support plate 9 up and down. A fixing structure for fixing the milling sand template 12 is provided at the upper end of the positioning shaft 11. In this embodiment, the fixing structure is a plurality of connecting holes, which are used to be connected and fixed to the respective connecting holes on the milling sand template 12 by countersunk head screws. The structure of the milling sand template 12 is as shown in the figure, and it is consistent with the final size of the plate 13 to be processed. In addition, in order to realize the upper and lower clamping and fixing of the plate 13, a vertically extending column 15 is connected at the center position of the support plate 9. The upper end of the column 15 is connected with a horizontally arranged cross bracket 16. The tail ends of the respective beams of the cross bracket 16 are fixedly connected with clamping cylinders 14. The output rods of the clamping cylinders 14 extend and retract downward. At the same time, the telescopic rods of the respective clamping cylinders 14 are coaxially arranged with the above-mentioned respective positioning shafts 11, so as to form a clamping space for clamping the plate 13 between the positioning shaft 11 and the output rod of the clamping cylinder 14. The cross bracket 16 is circumferentially relatively fixed to the support plate 9, so that stable clamping in the up and down directions of each clamping space can be realized. The output rod of the clamping cylinder 14 extends downward and presses on the plate 13 to clamp the plate 13, and after moving upward and disengaging from the plate 13, the loading and unloading of the plate 13 can be conveniently replaced.

[0037] In addition, in order to ensure the guiding movement of the output rod of the clamping cylinder 14 in the up and down directions, a clamping plate 17 is fixed at the lower end of the output rod of the clamping cylinder 14. A guide sleeve 18 is eccentrically arranged on one side of the clamping plate 17. The inner hole of the guide sleeve 18 forms a guide hole. At the same time, a vertically extending guide rod 19 is also fixed on the beam of the above-mentioned cross bracket 16. The axis of the guide rod 19 is consistent with the axis of the guide sleeve 18. During the up and down movement of the output rod, the guide hole is in upper and lower guiding assembly with the guide sleeve 18, so as to ensure the telescopic stability of the output rod, and further ensure the stable clamping of the plate 13.

[0038] The milling frame 20 is rotatably assembled on the left side of the vertical frame 2. Specifically, the milling frame 20 is of a box structure as a whole. A first hinge shaft 21 extending vertically is provided on the left side of the vertical frame 2. The rear end of the milling frame 20 is hingedly assembled with the first hinge shaft 21. At the same time, a milling cutter 22 is rotatably assembled at the bottom of the front end of the milling frame 20. A milling motor 23 in transmission cooperation with the milling cutter 22 is fixed at the rear end of the milling frame 20. During the swinging process of the milling frame 20, there is a milling position close to the base 1 at the milling station 6 for milling the surface of the plate 13, and there is also an avoidance position for swinging in the reverse direction away from the milling station 6 after milling is completed.

[0039] The sanding frame 24 is rotatably assembled on the right side of the vertical frame 2. Specifically, the sanding frame 24 is of a box structure as a whole. A second hinge shaft 25 extending vertically is provided on the right side of the vertical frame 2. The rear end of the sanding frame 24 is hingedly assembled with the second hinge shaft 25. At the same time, a pulley 26 is rotatably assembled at the bottom of the front end of the sanding frame 24. An adjusting frame 29 is fixed on the right side of the sanding frame 24. A sanding belt 27 is wound around the pulley 26, and the sanding belt 27 is tensioned by the drive of the adjusting frame 29. A sanding motor 28 in transmission cooperation with the pulley 26 is fixed at the rear end of the sanding frame 24. The rotation of the pulley 26 drives the sanding belt 27 to move in a cycle, so as to realize the sanding treatment of the side of the plate 13. During the swinging process of the sanding frame 24, there is a sanding position close to the base 1 at the sanding station 7 for sanding the surface of the plate 13, and there is also an avoidance position for swinging in the reverse direction away from the sanding station 7 after sanding is completed.

[0040] In order to facilitate the swinging drive of the above-mentioned milling frame 20 and sanding frame 24, a swinging drive mechanism for driving the milling frame 20 and the sanding frame 24 to swing reciprocally is provided on the vertical frame 2. Specifically, the swinging drive mechanism includes a milling cylinder 30 movably connected between the vertical frame 2 and the milling frame 20, and a sanding cylinder 31 movably connected between the vertical frame 2 and the sanding frame 24. In order to realize the swinging drive, taking the milling frame 20 as an example, a support sleeve 32 is fixed on one side of the milling frame 20. A support rod 34 extending vertically is rotatably assembled in the support sleeve 32. A support plate 33 is fixed at the top of the support rod 34. The milling cylinder 30 is fixed on the support plate 33 through a hoop 35. Transversely extending U-shaped brackets 36 are provided on both the left and right sides of the above cross beam 3. A third hinge shaft 37 extending vertically is inserted into the U-shaped bracket 36. The output shaft of the milling cylinder 30 and the third hinge shaft 37 on the right side are sleeved with each other to complete the swinging drive. When the milling cylinder 30 contracts, the support plate 33 and the milling cylinder 30 swing synchronously around the support rod 34. During the swinging process, since the output rod of the blood-sucking cylinder contracts, the milling frame 20 is pulled closer to the milling position, and vice versa.

[0041] In order to ensure the control of the feeding dimension for milling and sanding the sheet 13, in this embodiment, a milling positioning wheel 38 which is movably connected to the lower end of the milling cutter 22 and is arranged flush and in contact with the milling and sanding template 12 is provided. The outer diameter of the positioning wheel is the same as that of the milling cutter 22; the lower end of the belt pulley 26 is connected with a sanding positioning wheel 39 which is arranged flush and in contact with the milling and sanding template 12. The outer diameter of the sanding positioning wheel 39 is the same as the outer contour diameter of the sand belt 27. Such a setting is mainly based on the up-and-down arrangement form of the sheet 13 and the milling and sanding template 12. Taking milling as an example, when the milling frame 20 swings and the milling cutter 22 is swung to the milling station 6, the milling positioning wheel 38 is in contact with the side edge of the milling and sanding template 12. When the milling cutter 22 works, the feeding amount is controlled according to the contact between the milling positioning wheel 38 and the side edge of the milling and sanding template 12.

[0042] In addition, in order to realize the circumferential milling of the side edge of the sheet 13, a circumferential driving mechanism in place is further provided at the positions corresponding to the milling station 6 and the sanding station 7 on the base 1. The circumferential driving mechanism in place includes a driving box 40 fixed on the base 1. There is a driving motor in place inside the driving box. The upper end of the driving box 40 extends upward with a driving shaft 41. The axis of the driving shaft 41 is the same as the axis of the positioning shaft 11 at the position where it reaches this station. A non-rotating structure for circumferentially non-rotating cooperation with the positioning shaft 11 is provided on the driving shaft 41. At the same time, the circumferential driving mechanism in place also includes circumferential sensors respectively arranged on the side wall of the driving shaft 41 and the base 1. The circumferential sensor includes a distance sensor 42 fixed on the base 1, and further includes a trigger rod 43 arranged on the side wall of the driving shaft 41 and arranged at the same height as the receiving end of the distance sensor 42. At the same time, a controller (not shown in the figure) is also provided on the base 1. The controller is connected to the circumferential sensor for sampling, and at the same time the controller is connected to the driving motor in place for control. After the positioning shaft 11 moves to the position for non-rotating cooperation with the driving shaft 41, the controller collects the signal of the circumferential sensor and controls the driving motor in place to work, driving the driving shaft 41 to rotate. When the driving shaft 41 rotates, it drives the positioning shaft 11 to rotate circumferentially, and further drives the sheet 13 to rotate circumferentially. After the driving shaft 41 rotates one week, the trigger rod 43 returns to its original position, completing the milling process.

[0043] In order to facilitate the circumferential non-rotation between the positioning shaft 11 and the driving shaft 41 when the positioning shaft 11 moves, and to ensure that after milling and sanding are completed, the circumferential detachment of the positioning shaft 11 from the non-rotating cooperation with the driving shaft 41 around the support disk 9 is ensured. In this embodiment, the lower end of the positioning shaft 11 is a quadrilateral prism 44. The non-rotating structure includes a U-shaped through groove 45 provided at the upper end of the driving shaft 41. The thickness of the quadrilateral prism 44 is the same as the groove width of the U-shaped through groove 45 so as to realize non-rotating cooperation when the lower end of the positioning shaft 11 moves into the U-shaped through groove 45 after it arrives. In the initial state, the groove wall of the U-shaped through groove 45 is tangent to or flush with the inner and outer side edges of the quadrilateral prism 44. When it rotates one week, it is again in a flush arrangement state, facilitating the insertion and removal of the positioning shaft 11.

[0044] Furthermore, in order to ensure the stability of the circumferential movement of the positioning shaft 11, a positioning ring 46 coaxially arranged with the support disk 9 is fixed below the support disk 9 on the base 1. The positioning ring 46 is supported and fixed on the base 1 by a plurality of vertical rods, and the outer peripheral surface of the positioning ring 46 is in contact with and positioned against the outer side wall of the positioning shaft 11. In order to meet the compactness of the overall equipment height, ensure the stable guiding of the positioning shaft 11, and at the same time ensure that the sheet 13 does not freely rotate on the positioning shaft 11 during the movement of the positioning shaft 11, one side surface of the quadrilateral prism 44 of the positioning shaft 11 is an arc surface that fits the outer contour of the positioning ring 46. Concave avoidance grooves 47 are provided on the outer side wall of the positioning ring 46 at positions corresponding to the milling station 6 and the sanding station 7. A radial part of the upper end of the drive shaft 41 is located in the avoidance groove 47. During the rotation of the drive shaft 41, one side wall of the U-shaped through groove 45 can be located within the avoidance groove 47 so that the positioning shaft 11 slides into the U-shaped through groove 45.

[0045] The above-mentioned controller is also respectively controlled and connected to the multi-station divider 8, the milling cylinder 30, the sanding cylinder 31, the clamping cylinder 14, etc., in order to combine the corresponding control logic to control the automated actions of each part.

[0046] In this embodiment, in order to ensure the smooth circumferential rotation of the sheet 13, when the output rod of the clamping cylinder 14 presses down to clamp the sheet 13, the guide rod disengages from the cooperation with the guide sleeve 18, and the output rod of the clamping cylinder 14 can freely rotate circumferentially following the positioning shaft 11.

[0047] In addition, a control panel 48 is also connected to the front end of the cross beam 3 for controlling the normal operation of the machine.

[0048] Working principle:

[0049] In the initial state, the output rod of the clamping cylinder 14 is in the retracted position, one side of the upper end of the drive shaft 41 is within the avoidance groove 47 and is coaxially arranged with the inner side wall of the lower quadrilateral prism 44 of the positioning shaft 11, and both the milling frame 20 and the sanding frame 24 are in the outward avoidance position.

[0050] At the loading and unloading station 5: According to the final size and shape of the sheet 13, select a suitable milling and sanding template 12, fix it on the upper end of the positioning shaft 11 by screwing, realize the fixation of the milling and sanding template 12 on each positioning shaft 11, lay the sheet 13 flat and fit it on the milling and sanding template 12, and make it consistent with the length and width posture of the milling and sanding template 12. The controller controls the clamping cylinder 14 to work, and the output rod of the clamping cylinder 14 extends downward and presses on the upper plate surface of the sheet 13, thereby fixing the sheet 13 on the positioning shaft 11.

[0051] At the milling station 6: After the sheet 13 is clamped, the controller controls the multi-station divider 8 to work. The support disk 9 rotates to drive the positioning shaft 11 to move to the milling station 6. At this time, the U-shaped through groove 45 of the drive shaft 41 is located in the moving path of the positioning shaft 11, and the positioning shaft 11 can be horizontally inserted into the U-shaped through groove 45, and the two achieve anti-rotation assembly. Then the controller controls the milling cylinder 30 to work, driving the milling frame 20 to swing to the right to the milling station 6, so that the milling cutter 22 is in contact with the side of the sheet 13. Then the controller controls the milling motor 23 to work, driving the milling cutter 22 to rotate, and milling the side of the sheet 13. During this process, the milling cylinder 30 always outputs force until the milling cutter 22 feeds to the state where the milling positioning wheel 38 is in contact with the side of the milling sand template 12. During the milling process, the controller synchronously controls the in-place drive motor to work, thereby driving the drive shaft 41 and the positioning shaft 11 to rotate one week, realizing the circumferential milling of the side of the sheet 13. After the drive shaft 41 rotates one week, the controller detects the signal of the circumferential sensor, and the in-place drive motor stops working, ending the milling process of the sheet 13.

[0052] At the sanding station 7: It is basically the same as the milling station 6. After the positioning shaft 11 is driven to move to the sanding station 7, the controller controls the sanding cylinder 31 to output force. The sanding frame 24 swings to drive the sanding belt 27 to move to the sanding station 7. At the same time, the controller controls the pulley 26 to rotate, and the sanding belt 27 sands the side of the sheet 13. The feed amount is controlled by the position where the sanding positioning wheel 39 is in contact with the side of the milling sand template 12. After the sanding process of one week of rotation is completed, the sanding process of the sheet 13 ends.

[0053] At the loading and unloading station 5, the controller starts to operate until the output rod of the clamping cylinder 14 retracts, releases the clamping of the sheet 13, removes the processed sheet 13, and then puts a new sheet 13 in again.

[0054] Repeat the above operations. During this process, when there are sheets 13 at each station, the automatic sequential milling and sanding of multiple sheets 13 can be realized.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Any equivalent replacement of the present invention and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of protection of the claims of the present invention.

Claims

1. Automatic multi-station milling and sanding machine, characterized in that, The base comprises a base, on which loading and unloading stations, a milling station and a sanding station are sequentially arranged around the circumference thereof, a support disk is rotatably mounted at the center of the base, and a positioning shaft extending up and down is rotatably mounted on the support disk, and there are at least three positioning shafts, each positioning shaft is evenly spaced along the circumference of the support disk, and moves sequentially at each station following the rotation of the support disk, a clamping frame is fixed on the support disk, and a plurality of clamping cylinders are arranged on the clamping frame, and a clamping space for clamping a horizontally placed plate is formed between each clamping cylinder and each positioning shaft; The base is also rotatably equipped with a milling frame and a sanding frame, and the milling frame is provided with a milling cutter extending up and down at the corresponding milling station; the sanding frame is provided with a vertically arranged pulley at the corresponding sanding station, and a sanding belt is wound around the pulley; the base is also provided with a swing driving mechanism for driving the milling frame and the sanding frame to swing back and forth, and the swing driving mechanism drives the milling frame and the sanding frame to move back and forth so that the milling cutter and the sanding belt respectively fit the plate to work and stay away from the plate; The base is also provided with a multi-station divider for driving the support plate to rotate intermittently so that each positioning shaft stops at each station; A circumferential driving mechanism is also provided at the position corresponding to the milling station and the sanding station on the base, and the circumferential driving mechanism comprises a driving shaft rotatably arranged on the base, the axis of the driving shaft is consistent with the axis of the positioning shaft in place, and a rotation-stopping structure is provided on the driving shaft for circumferentially stopping the positioning shaft in place, and the driving shaft is connected to the driving motor in place in a transmission manner, and the circumferential mechanism in place also comprises a circumferential sensor arranged between the side wall of the driving shaft and the base; The base is also provided with a controller, which is connected to the circumferential sensor for sampling, and is respectively connected to the swing drive mechanism, the in-position drive motor and the multi-station divider, so that after the controller controls the multi-station divider to intermittently drive the support plate to rotate in position, the milling cutter and the abrasive belt are controlled to fit the plate, and the drive motor is controlled to drive the positioning shaft to rotate circumferentially for one circle; The upper end surface of the positioning shaft is provided with a fixing structure for fixing the sand milling template, the lower end of the milling cutter is movably connected with a milling positioning wheel for being arranged flush with the sand milling template, and the outer diameter of the positioning wheel is consistent with the outer diameter of the milling cutter; the lower end of the pulley is connected with a sand flat positioning wheel for being flush with the sand milling template, and the outer diameter of the sand flat positioning wheel is consistent with the outer contour diameter of the sand belt; A stand is provided on the base at the rear side of each workstation, one end of the milling frame and the sanding frame are rotatably mounted on the left and right sides of the stand respectively, and the rotation axis extends up and down, and the swing driving mechanism includes a milling cylinder movably connected between the stand and the milling frame, and also includes a sanding cylinder movably connected between the stand and the sanding frame.

2. The automatic multi-station milling and sanding machine according to claim 1, wherein, The lower end of the positioning shaft is a quadrilateral prism, and the anti-rotation structure includes a U-shaped through groove arranged at the upper end of the driving shaft. The thickness of the quadrilateral prism is consistent with the groove width of the U-shaped through groove so that after the positioning shaft is in place, its lower end is inserted into the U-shaped through groove to achieve anti-rotation fit.

3. The automatic multi-station milling and sanding machine according to claim 2, characterized in that, A positioning ring coaxial with the support disk is fixed below the support disk on the base, and the outer peripheral surface of the positioning ring is fitted and positioned with the outer side wall of the positioning shaft.

4. The automatic multi-station milling and sanding machine according to claim 3, characterized in that, One side surface of the quadrilateral prism of the positioning shaft is an arc surface that fits the outer contour of the positioning ring. Concave avoidance grooves are provided on the outer side wall of the positioning ring at positions corresponding to the milling station and the sanding station. A radial part of the upper end of the drive shaft is located in the avoidance groove. During the rotation of the drive shaft, one side wall of the U-shaped through groove can be located within the avoidance groove so that the positioning shaft slides into the U-shaped through groove.

5. The automatic multi-station milling and sanding machine according to claim 4, wherein, The circumferential sensor includes a distance sensor fixed on the base, and further includes a trigger rod arranged on the side wall of the drive shaft and arranged at the same height as the receiving end of the distance sensor.

6. The automatic multi-station milling and sanding machine according to any one of claims 1-4, characterized in that, A clamping plate is fixed at the lower end of the clamping cylinder. A guide hole is eccentrically arranged on one side of the clamping plate. A guide rod is fixed on the clamping plate corresponding to the axis of the guide hole, and the guide rod is guidingly assembled with the guide hole.

7. The automatic multi-station milling and sanding machine according to claim 1, characterized in that, A cross beam extends forward from the top of the vertical frame. Hinge shafts extending up and down are respectively arranged on the left and right sides of the cross beam. Support shafts extending up and down are rotatably assembled on the milling frame and the sanding frame. The milling cylinder and the sanding cylinder are respectively connected to the corresponding hinge shaft and support shaft.

8. The automatic multi-station milling and sanding machine according to any one of claims 1 to 4, characterized in that A plurality of positioning holes are provided on the support disk, and support bearings are fixed in the positioning holes. Each positioning shaft is inserted through the support bearing.

Images