Welding device and welding method for welding knife roll and movable knife holder machining method

Abstract

The invention relates to the technical field of manufacturing of agricultural machinery chopping systems, in particular to a welding device and method for welding a knife roll and a movable knife holder machining method. The device comprises a flexible platform, a rotating mechanism and a clamping mechanism, wherein the rotating mechanism and the clamping mechanism are vertically mounted on the flexible platform; the rotating mechanism comprises a fixed seat, a rotating seat and a positioning boss, the fixed seat is mounted on the flexible platform, the rotating seat is rotatably mounted at the top of the fixed seat, the positioning boss is mounted at the top of the rotating seat, and the fixed seat, the rotating seat and the positioning boss are coaxially arranged; the roller is vertically placed at the top of the rotating seat and is aligned by the positioning boss to be coaxial with the positioning boss; the clamping mechanism is located on one side of the rotating mechanism and used for clamping the movable tool apron. By arranging the rotating mechanism, the roller can be driven to rotate around the axis of the roller only by rotating the rotating seat, the gravity direction of the roller, the axis of the roller and the rotating axis are located on the same straight line, more labor and time are saved during overturning of the roller, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing agricultural machinery chopping systems, and in particular to a welding device and a welding method for welding a knife roller, and a method for processing a movable knife seat. Background Art

[0002] In the current harvesting agricultural machinery product shredding system, the shredding knife roller has the following basic requirements: simple and compact structure, easy to process and manufacture in large quantities; can produce sliding cutting to avoid chopping; the distribution of the movable knife seat is reasonable and the cutting resistance torque is uniform. It can withstand large dynamic loads during excavation and feeding. Based on the basic requirements of the shredding knife roller, the production process has high requirements for the machining accuracy of the knife seat, the riveting accuracy of the knife seat and the knife roller, and the welding deformation. The knife roller welding structure has the following characteristics: (1) The main structure is composed of a seamless tube and sealing plates at both ends, and different numbers of movable knife seats are evenly distributed at three-dimensional spatial angles on the outer ring of the seamless tube. (2) According to the design verification, the spatial position size accuracy of the movable knife seat and the knife roller is required to be high. The manufacturing of this structure has the following difficulties: (1) In order to make the tool holder fit with the knife roller, a spatial arc surface needs to be machined on the tool holder, which is difficult to process and time-consuming and labor-intensive; (2) The tool holder's tool surface and tool hole are spatial dimensions, which makes riveting and positioning difficult, and welding deformation cannot be controlled; (3) The movable tool holder is configured circumferentially, and the workpiece needs to be flipped continuously to ensure that the weld is a flat corner weld, and symmetrical welding is required to control deformation.

[0003] At present, in the prior art, when the roller is welded to the movable knife seat, since the movable knife seat is circumferentially arranged on the outer wall of the roller, the roller needs to be turned over and welded with the movable knife seat. However, the total weight of the roller and the knife seat is about 200kg, which is difficult to turn over, time-consuming and labor-intensive, and during the turning process, the roller or the movable knife seat is likely to be bumped and deformed. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a welding device, a welding method and a moving knife seat processing method for a welding knife roller, which solve the technical problems that when welding the existing roller and the moving knife seat, flipping is difficult, time-consuming and labor-intensive, and during the flipping process, the roller or the moving knife seat is likely to be bumped and deformed.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] In the first aspect, the present invention provides a welding device for a welding knife roller, wherein the knife roller includes a roller and a plurality of movable knife seats that can be connected to the outer wall of the roller, and the welding device includes a flexible platform, a rotating mechanism and a clamping mechanism that are all vertically installed on the flexible platform; the rotating mechanism includes a fixed seat, a rotating seat and a positioning boss, the fixed seat is installed on the flexible platform, the rotating seat is rotatably installed on the top of the fixed seat, the positioning boss is installed on the top of the rotating seat and the fixed seat, the rotating seat and the positioning boss are coaxially arranged, the roller is vertically placed on the top of the rotating seat and the roller is guided by the positioning boss to be coaxial with it; the clamping mechanism is located on one side of the rotating mechanism, and is used to clamp the movable knife seat; the rotating seat can drive the roller to rotate synchronously around its own axis, so that each movable knife seat clamped on the clamping mechanism can be circumferentially installed on the outer wall of the roller around the axis of the roller through a welding gun.

[0009] Preferably, the rotating seat includes a mounting seat and a dividing plate; the bottom of the mounting seat is mounted on the inside of the fixed seat through a bearing, the dividing plate is sleeved on the outer wall of the mounting seat, and the dividing plate is provided with a plurality of positioning holes in a circumferential array around its own axis, and one positioning hole corresponds to one moving knife seat; the top wall of the mounting seat is flush with the top wall of the dividing plate, and the roller is vertically placed on the dividing plate.

[0010] Preferably, the welding device also includes a first positioning pin and a positioning sleeve; the positioning sleeve is installed on the flexible platform, and the positioning sleeve is located below the dividing plate. As the rotating seat rotates, each of the positioning holes can correspond to the positioning sleeve; the first positioning pin can pass through any one of the positioning holes corresponding to the positioning sleeve and be inserted into the positioning sleeve to locate the position of one of the movable knife seats on the roller.

[0011] Preferably, the rotating mechanism also includes a fixed shaft and a sealing plate; the bottom of the fixed shaft is connected to the top of the positioning boss, the fixed shaft and the positioning boss are coaxially arranged, the roller is sleeved on the fixed outside and there is a gap between the inner wall of the roller and the outer wall of the fixed shaft; the sealing plate is sleeved on the top of the fixed shaft, and the outer wall of the sealing plate can fit with the inner wall of the roller to fasten the roller.

[0012] Preferably, the clamping mechanism includes a first clamping component and a second clamping component; the first clamping component and the second clamping component are both arranged around the outer wall of the roller, the first clamping component and the second clamping component are arranged adjacent to each other with an interval, the height of the first clamping component is higher than the height of the second clamping component, and are used to weld the upper and lower layers of the movable knife seat on the outer wall of the roller respectively.

[0013] Preferably, the first clamping assembly and the second clamping assembly have the same structure, both comprising a connecting rod and a clamping portion; the bottom of the connecting rod is mounted on the flexible platform, the top of the connecting rod is connected to the bottom of the clamping portion, and the clamping portion is used to clamp the moving tool holder.

[0014] Preferably, the clamping part includes a mounting plate, a clamping plate, a rib plate and a plurality of second positioning pins; the bottom of the mounting plate is connected to the top of the connecting rod, the bottoms of the clamping plate and the rib plate are both connected to the top of the mounting plate, and there is a gap between the clamping plate and the rib plate; one side wall of the movable tool seat can be fitted with the side wall of the clamping plate away from the rib plate, and the plurality of second positioning pins can pass through the clamping plate and the movable tool seat in sequence, and fix the movable tool seat to the clamping plate by a nut.

[0015] Preferably, the movable knife seat includes an upper plate and a lower plate; the upper plate and the lower plate are connected at an angle to form a herringbone shape, and the side walls of one side of the upper plate and the lower plate are both arc-shaped to adapt to the outer wall of the roller; the arc-shaped side walls of the upper plate and the lower plate can be connected to the roller; the upper plate is provided with a plurality of mounting holes, and the plurality of mounting holes are located at one end of the upper plate away from the roller for mounting a blade.

[0016] In a second aspect, the present invention provides a method for processing a movable tool holder, comprising the movable tool holder described above, and further comprising the following steps:

[0017] S11: The direction perpendicular to the short side of the upper plate is the X direction, the direction parallel to the short side of the upper plate is the Y direction, the zero point of the X direction is the midpoint of the straight line distance between the two short sides, the midpoint of the line connecting the highest point to the lowest point along the short side of the upper plate is the Y axis zero point, the X axis passes through the Y axis zero point, and the Z axis is established vertically upward from the zero point, the surface of the upper plate is the Z axis zero point, and the zero point is the zero point of the coordinate system of the upper plate;

[0018] S12: clamping the upper plate and the lower plate by means of an electromagnetic chuck, and positioning the upper plate and the lower plate by means of the coordinate system in step S11;

[0019] S13: Processing the upper plate and the lower plate.

[0020] In a third aspect, the present invention provides a welding method for a welding knife roller, using the above-mentioned welding device, and further comprising the following steps:

[0021] S21: vertically placing the roller on the rotating seat, wherein the roller, the rotating seat and the positioning boss are coaxially arranged;

[0022] S22: installing the clamping mechanism on the flexible platform according to a predetermined position;

[0023] S23: clamping the movable knife holder on the clamping mechanism;

[0024] S24: welding the movable knife seat to the outer wall of the roller by the welding gun, and after the welding is completed, removing the movable knife seat from the clamping mechanism;

[0025] S25: rotating the rotating mechanism to the next installation position of the movable knife holder, and continuing to repeat the steps S23 to S24 until a plurality of movable knife holders are installed on the outer wall of the roller in a circumferential array around the axis of the roller.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the present invention are:

[0028] 1. The welding device, welding method and moving knife seat processing method of a welding knife roller of the present invention can clamp and position multiple moving knife seats by setting a clamping mechanism, so that multiple moving knife seats can be accurately installed at the designated positions on the outer wall of the roller, thereby improving work efficiency. By setting a rotating mechanism, it can be realized that the roller can be driven to rotate around its own axis by simply rotating the rotating seat. Moreover, the rotating mechanism is vertically installed on the flexible platform, the roller is vertically placed on the rotating seat in the rotating mechanism, and the roller and the rotating seat are coaxially arranged, so that the gravity direction of the roller is on the same straight line as its own axis and the rotation axis. When multiple moving knife seats are installed one by one on the outer wall of the roller, the roller can be turned over more labor-saving, time-saving, and work efficiency is improved. At the same time, the clamping mechanism is located on one side of the rotating mechanism to avoid collision between the roller or multiple moving knife seats and the clamping mechanism, thereby avoiding deformation of the roller or the moving knife seat, reducing the damage rate of the knife roller, and improving the qualified rate of the product. By setting the positioning boss, it is possible to position the roller when it is placed on the rotating seat, so that the axis of the roller is consistent with the axis of the positioning boss, the rotating seat and the fixed seat.

[0029] 2. The welding device, welding method and moving tool holder processing method of the welding knife roller of the present invention can accurately provide an installation reference position for each moving tool holder by setting a dividing plate and setting a plurality of positioning holes thereon, ensuring that each moving tool holder can be accurately positioned and installed at the specified position, avoiding assembly errors caused by position deviation, and can also realize rapid installation of multiple moving tool holders, greatly saving installation time and improving work efficiency. By setting a first positioning pin and a positioning sleeve, and by using the first positioning pin in conjunction with the positioning sleeve, it can be ensured that the position of the moving tool holder is accurately locked after each rotation of the dividing plate, preventing position deviation due to vibration or other external forces during the welding process, and at the same time locating the position of each moving tool holder on the roller, that is, the operator only needs to simply rotate the dividing plate, select a suitable positioning hole, and then pass the first positioning pin through the positioning hole on the dividing plate and insert it into the positioning sleeve, so that the positioning work of the moving tool holder can be quickly completed, simplifying the complex operation process and improving work efficiency.

[0030] 3. A welding device, welding method and moving knife seat processing method of a welding knife roller of the present invention, by setting a fixed shaft, and the fixed shaft is coaxially arranged with the positioning boss, it can provide center positioning for the roller, ensure the stability of the roller during rotation, and avoid imbalance caused by axial deviation. By setting a sealing plate, and by the sealing plate fitting against the inner wall of the roller, it can effectively fix the roller to prevent unnecessary shaking or deviation during rotation. By means of a first clamping assembly and a second clamping assembly arranged around the outer wall of the roller, it is possible to clamp the moving knife seat at two heights at the same time, thereby achieving simultaneous positioning of two moving knife seats at different upper and lower positions on the upper and lower parts of the roller, and installing the two moving knife seats according to the positioning positions, thereby improving the installation efficiency of the moving knife seat.

[0031] 4. The welding device, welding method and movable knife seat processing method of the welding knife roller of the present invention can realize standardized production and maintenance and reduce production costs by setting the first clamping assembly and the second clamping assembly to the same structure. By setting a connecting rod and a clamping part, and connecting the connecting rod to the flexible platform, and connecting the connecting rod to the clamping part, the clamping part can be made more stable and not easy to shake on the flexible platform, thereby improving the installation stability of the movable knife seat and the roller.

[0032] 5. The welding device, welding method and moving knife seat processing method of the welding knife roller of the present invention can significantly enhance the rigidity of the clamping part by setting the mounting plate and the rib plate, prevent deformation during the clamping process, and ensure the stability of the moving knife seat during clamping. The cooperation of the second positioning pin and the nut ensures that the position of the moving knife seat will not change during the welding process, thereby ensuring the welding accuracy. At the same time, the cooperation between the second positioning pin and the nut enables the moving knife seat to be quickly and accurately fixed on the clamping plate, reducing the time required for adjustment and fixing, and improving production efficiency.

[0033] 6. The welding device, welding method and moving knife seat processing method of the welding knife roller of the present invention can form a stable triangular structure by connecting the upper plate and the lower plate at an angle to form a herringbone shape, thereby increasing the overall rigidity of the moving knife seat and reducing the risk of deformation when rotating at high speed or under the action of external forces. By setting the side walls of the upper plate and the lower plate that fit the outer wall of the roller to an arc shape, it can better fit the outer surface of the roller, making the moving knife seat more compatible with the roller during installation, thereby improving the stability and reliability of the installation. By providing a plurality of mounting holes on the upper plate for installing the blade, the blade can form a more reasonable cutting angle, which is beneficial to improving the cutting efficiency and cutting quality.

[0034] 7. A welding device, a welding method and a moving tool holder processing method for a welding knife roller of the present invention can reduce the demand for equipment and improve processing efficiency by mechanically processing the upper plate and the lower plate in blocks. That is, the original processing method requires small and medium-sized CNC machine tools with more than four axes, which increases the equipment cost, while the block processing method only requires a small machine tool with three axes to meet the demand. During block processing, due to the regular shape of the blank, convenient clamping and strong vibration resistance, high cutting speeds and feed rates can be used, which can greatly improve processing efficiency and reduce worker hours. Through electromagnetic suction cups, positioning bolts, steel bars, and establishing coordinate systems on the upper plate and the lower plate respectively, it can reduce the number of parts alignment and clamping times, utilize existing production processes, and improve knife roller production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a welding device, a welding method and a moving knife seat processing method of a welding knife roller of the present invention after welding is completed;

[0036] Figure 2 It is a schematic diagram of the overall three-dimensional structure after the roller is installed in a welding device, a welding method and a moving knife seat processing method of a welding knife roller of the present invention;

[0037] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the rotating mechanism excluding the sealing plate of a welding device, a welding method and a moving knife seat processing method of a welding knife roller of the present invention;

[0038] Figure 4 It is a schematic diagram of the overall three-dimensional structure of a welding device, a welding method and a movable knife seat processing method of a welding knife roller during the welding process of the present invention;

[0039] Figure 5 It is a schematic diagram of the overall three-dimensional structure of the first clamping assembly of a welding device, a welding method and a movable knife seat processing method of a welding knife roller of the present invention;

[0040] Figure 6 It is a schematic diagram of the overall three-dimensional structure of a movable knife seat of a welding device and a welding method for a welding knife roller and a movable knife seat processing method of the present invention;

[0041] Figure 7 The present invention is a schematic diagram of the top view of the structure of the welding device, welding method and movable knife seat processing method of the welding knife roller during the positioning of the upper plate.

[0042] [Description of Reference Numerals]

[0043] 1: knife roller; 11: roller; 12: moving knife seat; 121: upper plate; 1211: mounting hole; 1212: upper surface; 1213: first arc fitting surface; 1214: straight edge groove; 1215: lower surface; 1216: first arc groove; 122: lower plate; 1221: second arc groove; 1222: right angle groove; 1223: second arc fitting surface; 1224: connection surface; 2: flexible platform; 3: rotating mechanism; 31: fixed seat; 32: rotating Seat; 321: mounting seat; 322: dividing plate; 3221: positioning hole; 33: positioning boss; 34: fixed shaft; 35: closing plate; 4: clamping mechanism; 41: first clamping assembly; 42: second clamping assembly; 43: connecting rod; 44: clamping part; 441: mounting plate; 442: clamping plate; 443: rib plate; 444: second positioning pin; 5: first positioning pin; 6: positioning sleeve; 7: electromagnetic suction cup; 71: bolt positioning hole; 8: steel bar; 9: positioning bolt. DETAILED DESCRIPTION

[0044] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0045] Embodiment 1

[0046] like Figure 1-Figure 6As shown, a welding device of a welding knife roller 1 of this embodiment, the knife roller 1 includes a roller 11 and a plurality of movable knife seats 12 that can be connected to the outer wall of the roller 11, and the welding device includes a flexible platform 2, a rotating mechanism 3 and a clamping mechanism 4 that are vertically installed on the flexible platform 2.

[0047] Specifically, the rotating mechanism 3 includes a fixed seat 31, a rotating seat 32 and a positioning boss 33. The fixed seat 31 is installed on the flexible platform 2. The rotating seat 32 is rotatably installed on the top of the fixed seat 31. The positioning boss 33 is installed on the top of the rotating seat 32. The fixed seat 31, the rotating seat 32 and the positioning boss 33 are coaxially arranged. The roller 11 is vertically placed on the top of the rotating seat 32 and the roller 11 is aligned with the positioning boss 33 to be coaxial. By setting the positioning boss 33, it is possible to position the roller 11 when it is placed on the rotating seat 32, so that the axis of the roller 11 is consistent with the axis of the positioning boss 33, the rotating seat 32 and the fixed seat 31. The clamping mechanism 4 is located on one side of the rotating mechanism 3 and is used to clamp the moving knife seat 12. By setting the clamping mechanism 4, it is possible to clamp and position multiple moving knife seats 12, so that multiple moving knife seats 12 can be accurately installed at designated positions on the outer wall of the roller 11, thereby improving work efficiency. The rotating seat 32 can drive the roller 11 to rotate synchronously around its own axis, so that each movable knife seat 12 clamped on the clamping mechanism 4 can be installed on the outer wall of the roller 11 around the axis of the roller 11 through a welding gun. By setting the rotating mechanism 3, it can be realized that the roller 11 can be driven to rotate around its own axis by rotating the rotating seat 32. Moreover, the rotating mechanism 3 is vertically installed on the flexible platform 2, and the roller 11 is vertically placed on the rotating seat 32 in the rotating mechanism 3, and the roller 11 and the rotating seat 32 are coaxially arranged, so that the gravity direction of the roller 11 is on the same straight line as its own axis and the rotation axis. When multiple movable knife seats 12 are installed one by one on the outer wall of the roller 11, the flipping of the roller 11 is more labor-saving, time-saving, and work efficiency is improved. At the same time, the clamping mechanism 4 is located on one side of the rotating mechanism 3 to avoid collision between the roller 11 or multiple moving knife seats 12 and the clamping mechanism 4, thereby avoiding deformation of the roller 11 or the moving knife seats 12, reducing the damage rate of the knife roller 1, and improving the qualified rate of the product.

[0048] Furthermore, the rotating seat 32 includes a mounting seat 321 and a dividing plate 322. The bottom of the mounting seat 321 is mounted inside the fixed seat 31 through a bearing, and the dividing plate 322 is sleeved on the outer wall of the mounting seat 321. The dividing plate 322 is provided with a plurality of positioning holes 3221 arranged in a circumferential array around its own axis. One positioning hole 3221 corresponds to one moving tool seat 12, which can accurately provide an installation reference position for each moving tool seat 12, ensuring that each moving tool seat 12 can be accurately positioned and installed at a designated position, avoiding assembly errors caused by position deviation, and also enabling rapid installation of multiple moving tool seats 12, greatly saving installation time and improving work efficiency. The top wall of the mounting seat 321 is flush with the top wall of the dividing plate 322, and the roller 11 is vertically placed on the dividing plate 322.

[0049] Furthermore, the welding device further includes a first positioning pin 5 and a positioning sleeve 6. The positioning sleeve 6 is mounted on the flexible platform 2, and the positioning sleeve 6 is located below the indexing plate 322. As the rotating seat 32 rotates, each positioning hole 3221 can correspond to the positioning sleeve 6. The first positioning pin 5 can pass through any positioning hole 3221 corresponding to the positioning sleeve 6 and be inserted into the positioning sleeve 6 to locate a movable knife seat 12 on the roller 11. By providing the first locating pin 5 and the locating sleeve 6, and by using the first locating pin 5 in coordination with the locating sleeve 6, it is possible to ensure that the position of the movable tool holder 12 is accurately locked after each rotation of the indexing plate 322, thereby preventing position displacement due to vibration or other external forces during welding, and simultaneously locating the position of each movable tool holder 12 on the roller 11, that is, the operator only needs to simply rotate the indexing plate 322, select a suitable locating hole 3221, and then pass the first locating pin 5 through the locating hole 3221 on the indexing plate 322 and insert it into the locating sleeve 6, thereby quickly completing the positioning of the movable tool holder 12, thereby simplifying the complex operating process and improving work efficiency.

[0050] Furthermore, the rotating mechanism 3 also includes a fixed shaft 34 and a sealing plate 35. The bottom of the fixed shaft 34 is connected to the top of the positioning boss 33, and the fixed shaft 34 is coaxially arranged with the positioning boss 33, which can provide center positioning for the roller 11, ensure the stability of the roller 11 during rotation, and avoid imbalance caused by axis deviation. The roller 11 is sleeved on the fixed outside and there is a gap between the inner wall of the roller 11 and the outer wall of the fixed shaft 34. The sealing plate 35 is sleeved on the top of the fixed shaft 34, and the outer wall of the sealing plate 35 can fit with the inner wall of the roller 11, which is used to tighten the roller 11 to prevent it from unnecessary shaking or deviation during rotation.

[0051] Furthermore, the clamping mechanism 4 includes a first clamping assembly 41 and a second clamping assembly 42. The first clamping assembly 41 and the second clamping assembly 42 are both arranged around the outer wall of the roller 11, and the first clamping assembly 41 and the second clamping assembly 42 are arranged adjacent to each other with a gap, and the height of the first clamping assembly 41 is higher than the height of the second clamping assembly 42, and is used to weld the upper and lower layers of the movable knife seats 12 on the outer wall of the roller 11 respectively. By means of the first clamping assembly 41 and the second clamping assembly 42 arranged around the outer wall of the roller 11, it is possible to clamp the movable knife seats 12 at two heights at the same time, thereby achieving simultaneous positioning of the two movable knife seats 12 at different upper and lower positions at the upper and lower parts of the roller 11, and installing the two movable knife seats 12 according to the positioning positions, thereby improving the installation efficiency of the movable knife seats 12.

[0052] Furthermore, the first clamping assembly 41 and the second clamping assembly 42 have the same structure, both including a connecting rod 43 and a clamping portion 44, which can achieve standardized production and maintenance, and reduce production costs. The bottom of the connecting rod 43 is installed on the flexible platform 2, and the top of the connecting rod 43 is connected to the bottom of the clamping portion 44, which can make the clamping portion 44 more stable and not easy to shake on the flexible platform 2, thereby improving the installation stability of the movable knife seat 12 and the roller 11. The clamping portion 44 is used to clamp the movable knife seat 12.

[0053] Furthermore, the clamping portion 44 includes a mounting plate 441, a clamping plate 442, a rib plate 443 and a plurality of second positioning pins 444. The bottom of the mounting plate 441 is connected to the top of the connecting rod 43, the bottoms of the clamping plate 442 and the rib plate 443 are both connected to the top of the mounting plate 441, and there is a gap between the clamping plate 442 and the rib plate 443. One side wall of the movable knife seat 12 can fit with the side wall of the clamping plate 442 away from the rib plate 443, and the plurality of second positioning pins 444 can pass through the clamping plate 442 and the movable knife seat 12 in sequence, and fix the movable knife seat 12 to the clamping plate 442 by nuts. By providing the mounting plate 441 and the rib plate 443, the rigidity of the clamping portion 44 can be significantly enhanced, deformation can be prevented during the clamping process, and the stability of the movable knife seat 12 during clamping can be ensured. The cooperation between the second positioning pin 444 and the nut ensures that the position of the movable knife seat 12 will not change during the welding process, thereby ensuring the welding accuracy. At the same time, the cooperation between the second positioning pin 444 and the nut enables the movable knife seat 12 to be quickly and accurately fixed on the clamping plate 442, reducing the time required for adjustment and fixing, and improving production efficiency. Preferably, a plurality of wedge plates for increasing strength are provided on the outer walls of the fixed seat 31, the fixed shaft 34, and the connecting rod 43 of the first clamping assembly 41.

[0054] Furthermore, the movable knife seat 12 includes an upper plate 121 and a lower plate 122. The upper plate 121 and the lower plate 122 are connected at an angle to form a herringbone, which can form a stable triangular structure, increase the overall rigidity of the movable knife seat 12, and reduce the risk of deformation when rotating at high speed or under external force. The side walls of one side of the upper plate 121 and the lower plate 122 are both arc-shaped to adapt to the outer wall of the roller 11. The arc-shaped side walls of the upper plate 121 and the lower plate 122 can be connected to the roller 11, which can better fit the outer surface of the roller 11, so that the movable knife seat 12 and the roller 11 are more compatible when installed, and the stability and reliability of the installation are improved. The upper plate 121 is provided with a plurality of mounting holes 1211, and the plurality of mounting holes 1211 are located at one end of the upper plate 121 away from the roller 11, which are used to install a blade, which can enable the blade to form a more reasonable cutting angle, which is conducive to improving cutting efficiency and cutting quality.

[0055] Embodiment 2

[0056] A method for processing a movable tool holder in this embodiment includes the movable tool holder 12 described above, and further includes the following steps:

[0057] S11: Figure 7 As shown, the short side direction perpendicular to the upper plate 121 is the X direction, the short side direction parallel to the upper plate 121 is the Y direction, the zero point in the X direction is the midpoint of the straight line distance between the two short sides, the midpoint of the line connecting the highest point to the lowest point along the short side direction of the upper plate is the Y axis zero point, the X axis passes through the Y axis zero point, and the Z axis is established vertically upward from the zero point, the blank surface of the upper plate 121 is the Z axis zero point, and the zero point is the zero point of the coordinate system of the upper plate 121;

[0058] S12: Place the upper plate 121 on the electromagnetic chuck 7, insert two positioning bolts 9 into the bolt positioning holes 71 on the electromagnetic chuck 7, make the axis connecting the two positioning bolts 9 parallel to the Y axis, then place the steel bar 8 on the electromagnetic chuck 7, make the long side walls of the steel bar 8 fit with the outer walls of the two bolts and one short side wall of the upper plate 121 respectively, then insert a positioning bolt 9 into the bolt positioning hole 71 along the Y axis direction, and make the outer wall of the positioning bolt 9 fit with one long side wall of the upper plate 121, so as to complete the positioning of the upper plate 121;

[0059] S13: Power on the electromagnetic chuck 7 to make it magnetic and suck the upper plate 121, fix the upper plate 121, remove the three positioning bolts 9 and the steel bar 8, and complete the clamping of the upper plate 121;

[0060] S14: first mill the shape of the upper plate 121, then expose the upper surface 1212 of the upper plate 121 to light, mill the first arc fitting surface 1213 of the upper plate 121, then mill the straight edge groove 1214 of the upper plate 121, open a plurality of mounting holes 1211, then turn off the power and demagnetize, turn over the upper plate 121, perform secondary clamping on the upper plate 121 using steps S12-S13, then mill the lower surface 1215 of the upper plate 121 to the plate thickness requirement, finally mill the first arc break of the upper plate 121, and complete the processing of the upper plate 121;

[0061] S15: Clamp the lower plate 122 using the method of step S12-step S13;

[0062] S16: After clamping is completed, first mill the shape of the lower plate 122, then mill the second arc break of the lower plate 122, then mill the right-angle groove 1222 of the lower plate 122, then turn off the power and demagnetize, turn over the lower plate 122, and use steps S12-step S13 to clamp the lower plate 122 for the second time, then mill the second arc fitting surface 1223 of the lower plate 122, and finally mill the connecting surface 1224 of the lower plate 122.

[0063] It should be noted that this embodiment can reduce the demand for equipment and improve processing efficiency by splitting the movable tool holder 12 into an upper plate 121 and a lower plate 122 and performing separate mechanical processing. That is, the original processing method requires small and medium-sized CNC machine tools with four or more axes, which increases equipment costs, while the block processing method only requires a small three-axis machine tool to meet the demand. During block processing, due to the regular shape of the blank, convenient clamping, and strong vibration resistance, high cutting speeds and feed rates can be used, which can greatly improve processing efficiency and reduce worker hours. Through the electromagnetic suction cup 7, positioning bolts 9, steel bars 8, and establishing coordinate systems on the upper plate 121 and the lower plate 122, it can reduce the number of parts alignment and clamping times, utilize existing production processes, and improve the production efficiency and economic benefits of the knife roller. Block processing can better control the deformation of the upper plate 121 and the lower plate 122 during the processing, thereby improving the accuracy of the finished product, helping to reduce material waste, reducing processing costs, and at the same time ensuring that the mass distribution of the entire structure of the movable knife seat 12 is uniform, which is beneficial to reducing the imbalance of the welding knife roller 1 when rotating and improving product quality.

[0064] Embodiment 3

[0065] A welding method for a welding knife roller of this embodiment, using the above-mentioned welding device, further includes the following steps:

[0066] S21: First, the rotating mechanism 3 is vertically mounted on the flexible platform 2, the first positioning pin 5 is inserted into the positioning sleeve 6 through the positioning hole 3221, the indexing plate 322 is fixed, and then the roller 11 is vertically placed on the rotating seat 32, the roller 11, the rotating seat 32 and the positioning boss 33 are coaxially arranged, and the sealing plate 35 is sleeved on the fixed shaft 34, so that the sealing plate 35 fixes the roller 11;

[0067] S22: Installing the first clamping assembly 41 and the second clamping assembly 42 on the flexible platform 2 according to predetermined positions;

[0068] S23: Clamp two movable knife seats 12 in a group on the first clamping assembly 41 and the second clamping assembly 42 respectively, and after confirming the relative positions of the upper plate 121 and the lower plate 122 in a group of movable knife seats 12, firstly spot-weld the connecting surface 1224 of the lower plate 122 and the upper surface 1212 of the upper plate 121, and then remove the upper plate 121 and the lower plate 122 in the group of movable knife seats 12 after spot welding from the first clamping assembly 41 and the second clamping assembly 42 respectively, and fully weld the spot welding positions to complete the installation of the movable knife seats 12;

[0069] S24: The fully welded group of movable knife seats 12 are clamped again on the first clamping assembly 41 and the second clamping assembly 42, and the first arc fitting surface 1213 of the upper plate 121 and the second arc fitting surface 1223 of the lower plate 122 in the group of movable knife seats 12 are welded to the outer wall of the roller 11 by a welding gun. After the welding is completed, the group of movable knife seats 12 is removed from the clamping mechanism 4, and the welding of a group of two movable knife seats 12 with two layers is completed;

[0070] S25: Pull out the first positioning pin 5, rotate the indexing plate 322 to the installation position of the next movable knife seat 12, and pass the first positioning pin 5 through the positioning hole 3221 corresponding to the positioning sleeve 6 at this time, and insert it into the positioning sleeve 6 to fix the indexing plate 322;

[0071] S26: Repeat steps S23 to S25 until a plurality of movable knife seats 12 are installed on the outer wall of the roller 11 in a circumferential array around the axis of the roller 11 , and the welding of two layers of movable knife seats 12 is completed by the first clamping assembly 41 and the second clamping assembly 42 .

[0072] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0075] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A welding device for welding a knife roller, the knife roller (1) comprising a roller (11) and a plurality of movable knife seats (12) that can be connected to the outer wall of the roller (11), It is characterized in that The welding device comprises a flexible platform (2), a rotating mechanism (3) and a clamping mechanism (4) both of which are vertically mounted on the flexible platform (2); The rotating mechanism (3) comprises a fixed seat (31), a rotating seat (32) and a positioning boss (33); the fixed seat (31) is mounted on the flexible platform (2); the rotating seat (32) is rotatably mounted on the top of the fixed seat (31); the positioning boss (33) is mounted on the top of the rotating seat (32); and the fixed seat (31), the rotating seat (32) and the positioning boss (33) are coaxially arranged; the roller (11) is vertically placed on the top of the rotating seat (32) and the roller (11) is aligned by the positioning boss (33) to be coaxial with the rotating seat (32); The clamping mechanism (4) is located on one side of the rotating mechanism (3) and is used for clamping the movable knife seat (12); The rotating seat (32) can drive the roller (11) to rotate synchronously around its own axis, so that each movable knife seat (12) clamped on the clamping mechanism (4) can be circumferentially installed on the outer wall of the roller (11) around the axis of the roller (11) through a welding gun.

2. A welding device for welding a knife roller as claimed in claim 1, Features: The rotating seat (32) comprises a mounting seat (321) and a dividing plate (322); The bottom of the mounting seat (321) is mounted inside the fixed seat (31) via a bearing, the indexing plate (322) is sleeved on the outer wall of the mounting seat (321), and the indexing plate (322) is provided with a plurality of positioning holes (3221) arranged in a circumferential array around its own axis, and one positioning hole (3221) corresponds to one movable knife seat (12); The top wall of the mounting seat (321) is flush with the top wall of the dividing plate (322), and the roller (11) is vertically placed on the dividing plate (322).

3. A welding device for welding a knife roller as claimed in claim 2, Features: The welding device also includes a first positioning pin (5) and a positioning sleeve (6); The positioning sleeve (6) is installed on the flexible platform (2), and the positioning sleeve (6) is located below the indexing plate (322). As the rotating seat (32) rotates, each positioning hole (3221) can correspond to the positioning sleeve (6); The first positioning pin (5) can pass through any positioning hole (3221) corresponding to the positioning sleeve (6) and be inserted into the positioning sleeve (6) to locate the position of a movable knife seat (12) on the roller (11).

4. A welding device for welding a knife roller as claimed in claim 1, Features: The rotating mechanism (3) further comprises a fixed shaft (34) and a sealing plate (35); The bottom of the fixed shaft (34) is connected to the top of the positioning boss (33), the fixed shaft (34) and the positioning boss (33) are coaxially arranged, the roller (11) is sleeved outside the fixed shaft (34), and there is a gap between the inner wall of the roller (11) and the outer wall of the fixed shaft (34); The sealing plate (35) is sleeved on the top of the fixed shaft (34), and the outer wall of the sealing plate (35) can fit with the inner wall of the roller (11) to fasten the roller (11).

5. A welding device for welding a knife roller as claimed in claim 1, Features: The clamping mechanism (4) comprises a first clamping assembly (41) and a second clamping assembly (42); The first clamping assembly (41) and the second clamping assembly (42) are both arranged around the outer wall of the roller (11); the first clamping assembly (41) and the second clamping assembly (42) are arranged adjacent to each other with a gap; the height of the first clamping assembly (41) is higher than the height of the second clamping assembly (42), and the first clamping assembly (41) is used to weld the upper and lower layers of the movable knife seat (12) on the outer wall of the roller (11), respectively.

6. A welding device for welding a knife roller as claimed in claim 5, Features: The first clamping assembly (41) and the second clamping assembly (42) have the same structure, and both comprise a connecting rod (43) and a clamping portion (44); The bottom of the connecting rod (43) is mounted on the flexible platform (2), and the top of the connecting rod (43) is connected to the bottom of the clamping portion (44), and the clamping portion (44) is used to clamp the movable knife seat (12).

7. A welding device for welding a knife roller as claimed in claim 6, Features: The clamping portion (44) comprises a mounting plate (441), a clamping plate (442), a rib plate (443) and a plurality of second positioning pins (444); The bottom of the mounting plate (441) is connected to the top of the connecting rod (43), the bottoms of the clamping plate (442) and the rib plate (443) are both connected to the top of the mounting plate (441), and there is a gap between the clamping plate (442) and the rib plate (443); One side wall of the movable knife seat (12) can be fitted with the side wall of the clamping plate (442) away from the rib plate (443), and the multiple second positioning pins (444) can pass through the clamping plate (442) and the movable knife seat (12) in sequence, and fix the movable knife seat (12) to the clamping plate (442) by a nut.

8. A welding device for welding a knife roller as claimed in claim 1, Features: The movable knife seat (12) includes an upper plate (121) and a lower plate (122); The upper plate (121) and the lower plate (122) are connected at an angle to form a herringbone shape, and the side walls of the upper plate (121) and the lower plate (122) are both arc-shaped to adapt to the outer wall of the roller (11); The arc-shaped side walls of the upper plate (121) and the lower plate (122) can be connected to the roller (11); The upper plate (121) is provided with a plurality of mounting holes (1211), and the plurality of mounting holes (1211) are located at an end of the upper plate (121) away from the roller (11) and are used for mounting blades.

9. A method for machining a movable tool holder, comprising the movable tool holder (12) according to claim 8, It is characterized in that The following steps are also included: S11: The direction perpendicular to the short side of the upper plate (121) is the X direction, the direction parallel to the short side of the upper plate (121) is the Y direction, the zero point of the X direction is the midpoint of the straight line distance between the two short sides, the midpoint of the line connecting the highest point to the lowest point along the short side of the upper plate (121) is the Y axis zero point, the X axis passes through the Y axis zero point, and the Z axis is established vertically upward from the zero point, the surface of the upper plate (121) is the Z axis zero point, and the zero point is the zero point of the coordinate system of the upper plate (121); S12: clamping the upper plate (121) and the lower plate (122) by means of an electromagnetic chuck (7), and positioning the upper plate (121) and the lower plate (122) by means of the coordinate system in step S11; S13: Processing the upper plate (121) and the lower plate (122).

10. A welding method for a welding knife roller, using the welding device according to any one of claims 1 to 8, It is characterized in that The following steps are also included: S21: vertically placing the roller (11) on the rotating seat (32), wherein the roller (11), the rotating seat (32) and the positioning boss (33) are coaxially arranged; S22: installing the clamping mechanism (4) on the flexible platform (2) according to a predetermined position; S23: clamping the movable knife holder (12) onto the clamping mechanism (4); S24: welding the movable knife seat (12) to the outer wall of the roller (11) by means of the welding gun, and after the welding is completed, removing the movable knife seat (12) from the clamping mechanism (4); S25: Rotate the rotating mechanism (3) to the installation position of the next movable knife seat (12), and continue to repeat steps S23-S24 until a plurality of movable knife seats (12) are installed on the outer wall of the roller (11) in a circumferential array around the axis of the roller (11).

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