Log turnover device for band-sawing machine

Abstract

The invention relates to the technical field of wood processing, and discloses a log turnover device for a band sawing machine, the log turnover device comprises a machine body, turnover assemblies used for turning over logs on the machine body are arranged on the two sides of the machine body, and each turnover assembly comprises a sliding module, a lifting module, a driving module and a limiting turnover module. According to the technical scheme, the first clamping jaw unit works on the arc-shaped outer wall of a log, the second clamping jaw unit works on the cutting face of the log, after the first clamping jaw unit and the second clamping jaw unit press, clamp and fix the log, the log can be supported, and the two ends of the log are fixed and clamped in a supporting mode in the vertical direction, so that the log cutting efficiency is improved. The problem that logs are prone to falling off due to center deviation in the log overturning process can be effectively solved, the contact area and area of the first clamping jaw unit and the arc-shaped wall face of the logs are enlarged, fixation within a certain arc-shaped range can be formed, and through cooperation with operation of the second clamping jaw unit on the other side, the log overturning efficiency is improved. And the logs can be effectively in a stable state during overturning.

Description

Technical Field

[0001] The invention belongs to the technical field of wood processing, and in particular relates to a log turning device for a band saw machine. Background Art

[0002] When processing logs, multiple sides of the logs need to be processed, so a turning mechanism is needed to turn the logs over.

[0003] The patent with authorization announcement number CN221892140U discloses a log turning mechanism of a horizontal band saw machine, including a base plate, a mounting frame is installed on the top of the base plate, support plates are installed on both sides of the top of the mounting frame, the output end of the first servo motor is connected to one end of the cylinder, the output end of the cylinder is installed with a clamping plate, a lifting mechanism is provided at the middle position of the top of the base plate, a placement plate is installed on the top of the lifting mechanism, and clamping mechanisms are provided on both sides of the inside of the placement plate; by arranging a lifting mechanism above the base plate, the third servo motor, threaded rod, threaded sleeve, hinged rod, limit rod, limit sleeve, movable rod and mounting cavity of the lifting mechanism are used to cooperate with each other to drive the log to be lifted and processed.

[0004] The above-mentioned existing patent discloses a method of lifting the bottom of the log, and after lifting, clamping the entire log through the clamping plates that squeeze and clamp the two end faces of the log, and finally rotating and flipping the log by driving the clamping plates to rotate. The above-mentioned patent can certainly clamp and fix the entire log through the clamping plates set on both sides, but the combined use of the two clamping plates can only squeeze and fix the log in the axial direction. During the actual rotation and flipping process of the log, the log may flip and cause the center of gravity to shift, causing the clamping plates to slip from the ends of the log. Secondly, the fixation of the log by only two clamping plates may cause the extrusion and fixing force on the ends of the log to be too large, resulting in extrusion and cracking.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A log turning device for a band saw comprises a body, both sides of which are provided with turning assemblies for turning logs on the body, the turning assemblies comprising a sliding module, a lifting module, a driving module and a position-limiting turning module; The sliding module includes a sliding seat fixedly mounted on the top wall surfaces on both sides of the body by bolts, and a sliding block is slidably mounted in the sliding seat; The lifting module includes a lifting base fixedly mounted on the top wall of the sliding block by bolts, a lifting upper seat is arranged above the lifting base, and a second hydraulic cylinder is arranged between the lifting upper seat and the lifting base; The driving module includes a third hydraulic cylinder fixedly mounted on the wall surface of the lifting upper seat near one end of the log, a connecting sleeve fixedly mounted on the piston end wall of the third hydraulic cylinder, a plurality of connecting plates fixedly mounted on the outer wall of the connecting sleeve, the connecting plates are in an expanded state at one end away from the connecting sleeve, and the plurality of connecting plates are arranged together with the limit flip module; The position-limiting and turning module includes an outer cylinder, a turning cylinder, a rotating unit, a first clamping unit, a second clamping unit and a driving unit. The turning cylinder is arranged in the outer cylinder cavity, the rotating unit is arranged in the outer cylinder, the first clamping unit, the second clamping unit and the driving unit are arranged on the turning cylinder, the driving unit cooperates with the first clamping unit and the second clamping unit to limit the end of the log, and the rotating unit controls the limited log to rotate.

[0007] As a preferred embodiment of the present invention, a sliding groove is provided on the top of the sliding seat, and the side of the sliding seat on the same side as the log is hollowed out. A first hydraulic cylinder is fixedly installed on the inner wall on the other side of the sliding seat cavity, and the piston end of the first hydraulic cylinder is fixedly connected to one end of the sliding block; the second hydraulic cylinder is fixedly installed on the top wall of the lifting base, and the piston end of the second hydraulic cylinder is fixedly connected to the top wall of the lifting upper seat. Guide columns are also fixedly installed on the top wall of the lifting base on both sides of the second hydraulic cylinder, and the guide columns are movably connected to the lifting upper seat; a stabilizing sleeve is also fixedly provided on the front end shell of the third hydraulic cylinder, and a plurality of stabilizing rods for enhancing stability are also fixedly installed between the stabilizing sleeve and the lifting upper seat.

[0008] As a preferred embodiment of the present invention, the connecting plates are distributed in a ring array, the outer cylinder and the other ends of the multiple sets of connecting plates are fixed together by bolts, both ends of the outer cylinder and the turning cylinder are hollowed out, and ring bodies are rotatably mounted on both ends of the outer wall of the turning cylinder through bearings. The two ring bodies are fixedly mounted on the inner wall of the outer cylinder, and the rotating unit includes a ring tooth fixedly sleeved on the outer wall of the turning cylinder, a first servo motor is fixedly mounted on the wall surface of one of the ring bodies by a bracket, and a driving gear is fixedly mounted on the output end of the first servo motor through a shaft coupling, and the driving gear is meshed with the ring tooth.

[0009] As a preferred embodiment of the present invention, there are two driving units, and the two driving units are respectively arranged together with the first clamping jaw unit and the second clamping jaw unit. The driving unit includes a mounting plate, a connecting arm, a driving cover and a guide column. There are two connecting arms and two mounting plates. The two connecting arms are respectively fixedly mounted on the outer walls on both sides of the driving cover. The driving cover is located on the outside of the turning cylinder. The mounting plate is arc-shaped. The mounting plate is fixedly connected to the connecting arm on the corresponding side. The mounting plate is fixedly mounted on the outer wall of the turning cylinder by bolts. The wall surface of the driving cover close to the turning cylinder is in a rectangular hollow state. One end of the guide column is movably arranged in the cavity of the driving cover. Guide grooves are provided on the wall surfaces on both sides of the symmetrical part of the turning cylinder. The guide grooves pass through the turning cylinder, and the guide column extends into the cavity of the turning cylinder through the guide grooves.

[0010] As a preferred embodiment of the present invention, the drive unit also includes a second servo motor, which is fixedly mounted on one side wall of the drive cover through a bracket, and the output end of the second servo motor is fixedly connected to a lead screw through a shaft coupling, the lead screw passes through one side wall of the drive cover, and the lead screw extends into the cavity of the drive cover, and the other end of the lead screw is rotatably connected to the inner wall of the cavity of the drive cover, and a screw hole is provided at one end of the guide column located in the cavity of the drive cover, and the screw hole of the guide column is threadedly connected to the lead screw, and one end of the guide column is limitedly slid in the cavity of the drive cover, and each guide groove outside Limiting grooves are also provided on the side walls of the turning cylinder, and limiting blocks are fixedly installed on the walls on both sides corresponding to the positions of the guide column and the limiting grooves. The limiting blocks are located in the limiting groove cavity, and a stop shell is also equipped on the outside of the limiting groove. The guide column passes through the stop shell, and the stop shell is fixedly connected to the wall of the turning cylinder by bolts. The limit block is slidably installed between the stop shell and the wall of the limiting groove. A fourth hydraulic cylinder is fixedly installed on the end of the guide column away from the drive cover, and the piston end of the fourth hydraulic cylinder is fixedly connected to the drive seat, and the drive seat is arranged together with the first clamping jaw unit and the second clamping jaw unit.

[0011] As a preferred embodiment of the present invention, the second clamping unit includes a clamping plate, which is a rectangular plate body. The clamping plate is fixedly connected to the driving seat. A plurality of clamping grooves are provided on the side wall of the clamping plate away from the driving seat, and the clamping grooves are conical.

[0012] As a preferred embodiment of the present invention, the first clamping unit includes a connecting plate, a clamping arm plate, a side wing plate, a fifth hydraulic cylinder and a clamping arm, the connecting plate is fixedly connected to the driving seat, the clamping arm plate and the side wing plate are both in two groups, the clamping arm plate is arc-shaped, and two second ear seats are fixedly installed on the side wall of the connecting plate away from the driving seat by bolts, one end of the clamping arm plate is rotatably connected to the second ear seat by a pin, the side wing plate is fixedly installed on the side wall of the connecting plate close to the driving seat by bolts, the positions of the side wing plate and the clamping arm plate correspond up and down, the side wing plate is L-shaped, and the first ear seat is fixedly installed on the side wall of the side wing plate close to the clamping arm plate by bolts, the first ear seat is rotatably installed on the rotating seat by a pin, one end of the fifth hydraulic cylinder is fixedly connected to the rotating seat, the ear plates are fixedly installed on the arc walls of the two clamping arm plates, the ear plates are also arc-shaped, and multiple groups of ear canals are arranged on the ear plates, the piston end of the fifth hydraulic cylinder is also fixedly connected to the rotating seat, and the other end of the rotating seat is rotatably connected to the ear canal by a pin; each clamping arm plate is provided with multiple groups of clamping arms.

[0013] As a preferred embodiment of the present invention, each of the clamping arms is composed of two clamping arms and a fixing rod, the fixing rod is fixed between the two clamping arms, the clamping arm is an arc-shaped body, one side of the clamping arm is a horizontal cross-section portion, and the other side of the clamping arm is an arc-shaped surface portion, the arc-shaped surface portion of the clamping arm faces the outer wall of the log, and the arc-shaped surface portion of the clamping arm is provided with an inward concave clamping groove, and the arc-shaped surface portions of the clamping arms on both sides of the clamping groove form a conical surface, the fixing rod is fixedly connected to the clamping arm plate and forms a penetration, and the clamping arms are located on both sides of the clamping arm plate.

[0014] As a preferred embodiment of the present invention, a side arm is fixedly installed on the horizontal cross-section portion of the clamping arm away from one end of the log by bolts, a part of the side arm extends along the outer side of the clamping arm toward the end away from the log, and the other part of the side arm is L-shaped, and the L-shaped part of the side arm is located on the side of the corresponding clamping arm away from the log, and a sixth hydraulic cylinder is fixedly installed on the L-shaped free end of the side arm, and a chuck is fixedly installed on the piston end of the sixth hydraulic cylinder, and a plurality of groups of clamping rods are fixedly installed on the wall surface of the chuck facing the log, and the end of the clamping rod is tapered.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This technical solution is based on the first clamping unit and the second clamping unit. The first clamping unit operates on the curved outer wall of the log, and the second clamping unit operates on the cut surface of the log. After the two clamping units apply pressure and clamp the log, they can play a supporting role on the log. By supporting and fixing the two ends of the log in the vertical direction, it can effectively avoid the problem of the log being easily dropped due to center deviation during the flipping process. The first clamping unit expands the area and region of contact with the curved wall of the log, and can form a fixation within a certain arc range. Cooperating with the operation of the second clamping unit on the other side, it effectively keeps the log in a stable state when flipping. Secondly, the cooperation of the first clamping unit and the second clamping unit can also avoid the problem of excessive force acting on the wall of the log alone, which makes the log easily squeezed and broken.

[0016] 2. This technical solution can achieve stable and synchronous flipping of logs through the sliding module, lifting module, drive module and limit flipping module. The setting of the sliding module can drive the limit flipping module to adjust its position on the machine body as a whole, avoiding the problem of motion interference between the band saw and the log when cutting; the setting of the lifting module can meet the flipping operation of logs of different sizes; the setting of the drive module can meet the flipping operation of logs of different lengths.

[0017] 3. This technical solution uses a driving unit that is set up, and the driving unit can fine-tune the position of the first clamping unit and the second clamping unit. When the log is located between the two clamping units, the first clamping unit and the second clamping unit can be moved and adjusted along the upper side of the outer wall of the log through the control of the driving unit, which is convenient for adjusting and selecting the fixed position with the log, and has strong practicality.

[0018] 4. This technical solution is achieved through the provision of a rotating unit, a first clamping unit and a second clamping unit. The first clamping unit is squeezed and fixed to the curved outer wall of the log, and the second clamping unit is squeezed and fixed to the horizontal cross-section of the cut log. The two form a symmetrical fixed squeezing effect, wherein the clamping plate forms a surface squeezing contact with the horizontal cross-section of the log, and the multiple groups of clamping arms on the two clamping arm plates are in multi-level line contact with the curved outer wall of the log, and finally form an upper and lower cooperating squeezing fixation with the clamping plate, which can ensure the stability of the clamping fixation of one end of the log.

[0019] 5. This technical solution allows the first clamping unit to contact the curved outer wall of the log, and the second clamping unit to contact the horizontal surface of the cut log. This is because the log needs to be flipped each time one side is cut. The first clamping unit is always in contact with the uncut curved wall of the log, and the second clamping unit is in contact with the cut surface. The cooperation between the two forms a symmetrical clamping fixation, which can greatly ensure the stability of the log when it is flipped.

[0020] 6. This technical solution uses the sixth hydraulic cylinder, chuck and clamping rod to clamp and fix the log. After the second clamping unit clamps and fixes the horizontal cross-section of the log and the first clamping unit clamps and fixes the curved outer wall of the log, the sixth hydraulic cylinder, chuck and clamping rod can finally be used to clamp and fix the end face of the log, which can further ensure the stability of the log fixation. The first clamping unit and the second clamping unit form a symmetrical clamping fixation, while the sixth hydraulic cylinder, chuck and clamping rod clamp and fix the log from another direction, and the cooperation with the first clamping unit and the second clamping unit can form a multi-dimensional fixation.

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached figure: Figure 1 It is an overall three-dimensional diagram of the present invention; Figure 2 A side perspective view of the flip assembly of the present invention; Figure 3 This is a front perspective view of the flip assembly of the present invention; Figure 4 This is a partially exploded perspective view of the position limiting flip module of the present invention; Figure 5 This is a three-dimensional diagram of the turning cylinder and the rotating unit of the present invention; Figure 6 It is a three-dimensional diagram of the turning cylinder, the first clamping unit, the second clamping unit and the driving unit of the present invention; Figure 7 A perspective view of the first clamping unit, the second clamping unit and the driving unit of the present invention; Figure 8 This is a three-dimensional diagram of the turning cylinder of the present invention; Figure 9 is a perspective view of the second clamping jaw unit and the driving unit of the present invention; Figure 10 A three-dimensional diagram of the clamping plate of the present invention; Figure 11 A perspective view of the first clamping unit and the driving unit of the present invention; Figure 12 A side perspective view of the first clamping unit and the driving unit of the present invention; Figure 13 It is a partial side perspective view of the first clamping jaw unit of the present invention; Figure 14 It is a partial bottom view of the first clamping jaw unit of the present invention; Figure 15 A bottom view of the clamping arm of the present invention; Figure 16 It is a side perspective view of the clamping arm of the present invention.

[0023] In the figure: 10, body; 11, sliding seat; 12, sliding groove; 13, sliding block; 14, first hydraulic cylinder; 15, lifting base; 16, second hydraulic cylinder; 17, guide column; 18, lifting upper seat; 19, third hydraulic cylinder; 20, stabilizing sleeve; 21, stabilizing rod; 22, connecting sleeve; 23, connecting plate; 24, outer cylinder; 25, turning cylinder; 26, ring body; 27, ring gear; 28, first servo motor; 29, driving gear; 30, limiting groove; 31, guide groove; 32, stop shell; 33, limiting block; 34, Guide column; 35. Drive cover; 36. Connecting arm; 37. Mounting plate; 38. Second servo motor; 39. Lead screw; 40. Fourth hydraulic cylinder; 41. Drive seat; 42. Connecting plate; 43. Clamping plate; 44. Claw groove; 45. Side wing plate; 46. First ear seat; 47. Rotating seat; 48. Fifth hydraulic cylinder; 49. Ear plate; 50. Clamping arm plate; 51. Ear canal; 52. Second ear seat; 53. Clamping arm; 54. Clamping groove; 55. Side arm; 57. Sixth hydraulic cylinder; 58. Chuck; 59. Clamping rod; 60. Fixing rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0025] A log turning device for a band saw machine, such as Figure 1 、 Figure 2 As shown, the machine comprises a body 10, with flipping assemblies for flipping logs on the body 10 disposed on both sides. The flipping assemblies include a sliding module, a lifting module, a drive module, and a limited flipping module. A band saw (not shown) is also disposed on one side of the body 10. A pulley movable on a guide rail is disposed at the bottom of the body 10. Logs are placed on two sets of platforms on the body 10 and secured to the platforms by clamps. The two sets of platforms are driven by cylinders to move the logs. The body 10 then drives the logs toward the band saw to achieve cutting. After each cut, the two sets of platforms move the log slightly outward, and then drive the body 10 to cut the log. The aforementioned band saw and body 10 are both conventional technology and will not be described in detail here.

[0026] like Figure 1 、 Figure 2 、 Figure 3As shown, the sliding module includes a sliding seat 11 fixedly mounted on the top wall surfaces on both sides of the body 10 by bolts, a sliding groove 12 is provided on the top of the sliding seat 11, and the side of the sliding seat 11 on the same side as the log is hollow. A sliding block 13 is slidingly installed in the sliding seat 11, and a first hydraulic cylinder 14 is fixedly mounted on the inner wall on the other side of the cavity of the sliding seat 11, and the piston end of the first hydraulic cylinder 14 is fixedly connected to one end of the sliding block 13.

[0027] During use, the staff can control the position of the sliding block 13 in the sliding groove 12 through the first hydraulic cylinder 14. When the sliding block 13 is driven to move in the sliding groove 12, the sliding block 13 can drive the lifting module, the driving module and the limit flipping module to move as a whole. The overall movement can meet the need to avoid the limit flipping module from being close to the band saw machine when cutting the logs. That is, when the log flipping device of the present technical solution is not needed, the limit flipping module can be moved to the other side of the body 10, and the overall adjustment can be moved out each time the log needs to be flipped in place.

[0028] like Figure 2 、 Figure 3 As shown, the lifting module includes a lifting base 15 fixedly mounted on the top wall of the sliding block 13 by bolts, a lifting upper seat 18 is provided above the lifting base 15, a second hydraulic cylinder 16 is fixedly mounted on the top wall of the lifting base 15, the piston end of the second hydraulic cylinder 16 is fixedly connected to the top wall of the lifting upper seat 18, and guide columns 17 are also fixedly mounted on the top wall of the lifting base 15 on both sides of the second hydraulic cylinder 16, and the guide columns 17 are movably connected to the lifting upper seat 18.

[0029] The lifting module is designed to accommodate logs of varying sizes, volumes, and diameters. Larger-diameter logs are placed at a higher height on the platform of the machine body 10. Therefore, the vertical height of the lifting base 18 can be adjusted by controlling the operation of the second hydraulic cylinder 16, thereby aligning the limited flip module horizontally with the log. Through holes are provided on the bottom of each side of the lifting base 18, corresponding to the positions of guide posts 17. These guide posts 17 are inserted into these through holes to ensure stability during vertical adjustment of the lifting base 18.

[0030] like Figure 2 、 Figure 3As shown, the driving module includes a third hydraulic cylinder 19 fixedly mounted on the wall of the lifting seat 18 close to one end of the log, a stabilizing sleeve 20 is also fixedly provided on the front end shell of the third hydraulic cylinder 19, and a plurality of stabilizing rods 21 for enhancing stability are also fixedly installed between the stabilizing sleeve 20 and the lifting seat 18, a connecting sleeve 22 is fixedly mounted on the piston end wall of the third hydraulic cylinder 19, and a plurality of connecting plates 23 are fixedly mounted on the outer wall of the connecting sleeve 22, and the connecting plate 23 is in an expanded state at one end away from the connecting sleeve 22, and the plurality of connecting plates 23 are arranged together with the limit flip module.

[0031] The drive module is set up to meet the needs of logs of different lengths. After the logs are placed on the two sets of platforms of the body 10, the two ends of the logs need to extend from both sides of the two platforms, that is, the minimum length of the logs must be longer than the distance between the two platforms. Such a setting is not only convenient for cooperating with the band saw to cut the logs, but also convenient for the rear limit flipping module to clamp and flip the logs. When encountering logs of shorter lengths, by controlling the operation of the third hydraulic cylinder 19, the third hydraulic cylinder 19 drives the connecting sleeve 22, the connecting plate 23 and the limit flipping module to move as a whole, approach the log, and align one end of the log with the limit flipping module. Therefore, the setting of the drive module can meet the processing needs of logs of different lengths and is highly practical.

[0032] like Figure 2 、 Figure 4 、 Figure 5 As shown, the limiting and turning module includes an outer cylinder 24, a turning cylinder 25, a rotating unit, a first clamping unit, a second clamping unit and a driving unit. The turning cylinder 25 is arranged in the cavity of the outer cylinder 24, the rotating unit is arranged in the outer cylinder 24, the first clamping unit, the second clamping unit and the driving unit are arranged on the turning cylinder 25, and the driving unit cooperates with the first clamping unit and the second clamping unit to limit the end of the log, and the rotation unit controls the limited log to rotate.

[0033] During use, when it is necessary to fine-tune the first clamping unit and the second clamping unit, the driving unit can control the first clamping unit and the second clamping unit to move, so that the first clamping unit and the second clamping unit can better contact the log. After adjusting the position, the first clamping unit and the second clamping unit approach the log until a certain hard contact is produced with the log. The first clamping unit and the second clamping unit are arranged in a symmetrical state up and down, so that one end of the log can be clamped and fixed by the first clamping unit and the second clamping unit. Finally, through the work of the rotating unit, the first clamping unit, the second clamping unit and the grasped log are rotated and flipped, thereby realizing the in-situ flipping of the log. The flipping angle can be controlled by the rotating unit.

[0034] like Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the connecting plates 23 are distributed in a ring array, the outer cylinder 24 and the other ends of the multiple groups of connecting plates 23 are fixed together by bolts, both ends of the outer cylinder 24 and the flip cylinder 25 are hollow, and both ends of the outer wall of the flip cylinder 25 are rotatably mounted with ring bodies 26 through bearings. The two ring bodies 26 are fixedly mounted to the inner wall of the outer cylinder 24, and the rotating unit includes a ring gear 27 fixedly sleeved on the outer wall of the flip cylinder 25. A first servo motor 28 is fixedly mounted on the wall surface of one of the ring bodies 26 through a bracket, and a driving gear 29 is fixedly mounted on the output end of the first servo motor 28 through a shaft coupling, and the driving gear 29 is meshed with the ring gear 27; there are two driving units, and the two driving units are respectively arranged together with the first clamping jaw unit and the second clamping jaw unit to drive The movable unit includes a mounting plate 37, a connecting arm 36, a driving cover 35 and a guide column 34. There are two connecting arms 36 and two mounting plates 37. The two connecting arms 36 are respectively fixedly mounted on the outer walls of the driving cover 35 on both sides. The driving cover 35 is located on the outside of the turning cylinder 25. The mounting plate 37 is arc-shaped. The mounting plate 37 is fixedly connected to the connecting arm 36 on the corresponding side. The mounting plate 37 is fixedly mounted on the outer wall of the turning cylinder 25 by bolts. The wall surface of the driving cover 35 on one side close to the turning cylinder 25 is in a rectangular hollow state. One end of the guide column 34 is movably arranged in the cavity of the driving cover 35. Guide grooves 31 are provided on the wall surfaces on both sides of the symmetrical part of the turning cylinder 25. The guide grooves 31 pass through the turning cylinder 25, and the guide columns 34 extend into the cavity of the turning cylinder 25 through the guide grooves 31.

[0035] like Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the drive unit also includes a second servo motor 38, which is fixedly mounted on one side wall of the drive cover 35 through a bracket. The output end of the second servo motor 38 is fixedly connected to a screw 39 through a shaft coupling. The screw 39 passes through one side wall of the drive cover 35 and extends into the cavity of the drive cover 35. The other end of the screw 39 is rotatably connected to the inner wall of the cavity of the drive cover 35. A screw hole is provided at one end of the guide column 34 located in the cavity of the drive cover 35. The screw hole of the guide column 34 is threadedly connected to the screw 39. One end of the guide column 34 is limited and slides in the cavity of the drive cover 35. There is also a screw on the wall of the flip cylinder 25 outside each guide groove 31. Limiting grooves 30 are provided, and limiting blocks 33 are fixedly installed on the wall surfaces on both sides corresponding to the positions of the guide columns 34 and the limiting grooves 30. The limiting blocks 33 are located in the cavity of the limiting grooves 30, and a stop shell 32 is also equipped on the outside of the limiting grooves 30. The guide columns 34 pass through the stop shell 32, and the stop shell 32 is fixedly connected to the wall surface of the flip cylinder 25 by bolts. The limiting blocks 33 are slidably installed between the stop shell 32 and the wall surface of the limiting grooves 30. The end of the guide columns 34 away from the drive cover 35 is also fixedly installed with a fourth hydraulic cylinder 40, and the piston end of the fourth hydraulic cylinder 40 is fixedly connected to the drive seat 41, and the drive seat 41 is arranged together with the first clamping jaw unit and the second clamping jaw unit.

[0036] Specifically, one end of the log is aligned with the turning cylinder 25, and after the third hydraulic cylinder 19 works, the turning cylinder 25 is pushed to move closer to one end of the log, and one end of the log extends into the cavity of the turning cylinder 25. At this time, the work of the two second servo motors 38 can be controlled. The second servo motor 38 is a forward and reverse rotation motor. When the second servo motor 38 works, the second servo motor 38 can drive the screw 39 to rotate, and the guide column 34 can slide. The change in the work of the guide column 34 can drive the first clamping unit and the second clamping unit to move, which can facilitate fine-tuning the position of the first clamping unit and the second clamping unit, and adjust the first clamping unit and the second clamping unit to the end position of the log, so as to facilitate the subsequent clamping and fixing of the log end.

[0037] like Figure 9 、 Figure 10 As shown, the second clamping unit includes a clamping plate 43, which is a rectangular plate body. The clamping plate 43 is fixedly connected to the driving seat 41. A plurality of clamping grooves 44 are provided on the side wall of the clamping plate 43 away from the driving seat 41. The clamping grooves 44 are conical.

[0038] Furthermore, when the position of the clamping plate 43 is adjusted to be close to the end of the log, the surface corresponding to the clamping plate 43 and the log should be a horizontal cross-section after cutting. After the log is placed on the two sets of platforms of the machine body 10 and fixed, the wall surface of one side of the log is cut by the band saw. After the cutting is completed, one side of the log becomes a horizontal cross-section. After the first cutting is completed, the log needs to be turned in situ. At this time, the log is turned over by the cooperation of the first clamping unit and the second clamping unit. Similarly, the working surface of the first clamping unit and the log should be an uncut arc surface; After the two jaw units cooperate to flip the log, the band saw is used to cut the other arc surface of the log. After the cutting is completed, the log becomes two horizontal sections. At this time, the first jaw unit and the second jaw unit are used to flip the log. After the flipping is completed, the band saw cuts the other arc surface of the log. After the cutting is completed again, the three sides of the log become horizontal sections. Finally, the first jaw unit and the second jaw unit are used to flip the remaining log again, and finally the remaining arc surface is cut until the overall cutting of the log is completed.

[0039] When the clamping plate 43 is close to the horizontal cross-section of the log, by controlling the working switch of the fourth hydraulic cylinder 40, when the fourth hydraulic cylinder 40 is working, the fourth hydraulic cylinder 40 can directly drive the clamping plate 43 close to the horizontal cross-section of the log until the claw groove 44 is inserted into the surface of the log. At this time, the clamping plate 43 has the effect of clamping and fixing the horizontal cross-section of the log. The setting of the claw groove 44 can increase the friction between the clamping plate 43 and the log, thereby ensuring the clamping and fixing ability.

[0040] like Figure 11 、 Figure 12 、 Figure 13 、 Figure 14As shown, the first clamping jaw unit includes a connecting plate 42, a clamping jaw arm plate 50, a side wing plate 45, a fifth hydraulic cylinder 48 and a clamping jaw arm. The connecting plate 42 is fixedly connected to the drive seat 41. The number of the clamping jaw arm plate 50 and the side wing plate 45 are both two groups. The clamping jaw arm plate 50 is arc-shaped. Two second ear seats 52 are fixedly installed on the side wall of the connecting plate 42 away from the drive seat 41 by bolts. One end of the clamping jaw arm plate 50 is rotatably connected to the second ear seat 52 through a pin shaft. The side wing plate 45 is fixedly installed on the side wall of the connecting plate 42 close to the drive seat 41 by bolts. The position of the side wing plate 45 and the clamping jaw arm plate 50 is up and down. Correspondingly, the side wing plate 45 is L-shaped, and a first ear seat 46 is fixedly installed on the side wall of the side wing plate 45 close to the clamping arm plate 50 by bolts. The first ear seat 46 is rotatably installed with a rotating seat 47 through a pin. One end of the fifth hydraulic cylinder 48 is fixedly connected to the rotating seat 47. An ear plate 49 is fixedly installed on the curved wall of the two clamping arm plates 50. The ear plate 49 is also curved and has multiple groups of ear canals 51 on the ear plate 49. The piston end of the fifth hydraulic cylinder 48 is also fixedly connected to the rotating seat 47. The other end of the rotating seat 47 is rotatably connected to the ear canal 51 through a pin. Each clamping arm plate 50 is provided with multiple groups of clamping arms. like Figure 15 、 Figure 16 As shown, each clamp arm is composed of two clamp arms 53 and a fixing rod 60. The fixing rod 60 is fixed between the two clamp arms 53. The clamp arm 53 is an arc-shaped body. One side of the clamp arm 53 is a horizontal cross-section portion, and the other side of the clamp arm 53 is an arc-shaped surface portion. The arc-shaped surface portion of the clamp arm 53 faces the outer wall of the log. The arc-shaped surface portion of the clamp arm 53 is provided with an inner concave clamping groove 54. The arc-shaped surface portions of the clamp arm 53 on both sides of the clamping groove 54 form a tapered surface. The fixing rod 60 is fixedly connected to the clamp arm plate 50 and forms a penetration. The clamp arms 53 are located on both sides of the clamp arm plate 50, far away A side arm 55 is fixedly installed on the horizontal cross-section of the clamping arm 53 away from one end of the log by bolts. A part of the side arm 55 extends along the outer side of the clamping arm 53 toward the end away from the log, and the other part of the side arm 55 is L-shaped. The L-shaped part of the side arm 55 is located on the side of the corresponding clamping arm 53 away from the log. A sixth hydraulic cylinder 57 is fixedly installed on the L-shaped free end of the side arm 55, and a clamping plate 58 is fixedly installed on the piston end of the sixth hydraulic cylinder 57. A plurality of clamping rods 59 are fixedly installed on the wall surface of the clamping plate 58 facing the log, and the end of the clamping rod 59 is tapered.

[0041] After the first clamping arm 50 is pulled back and the second clamping arm 53 is pulled back, the second clamping arm 53 is pulled back and the second clamping arm 53 is pulled back and the second clamping arm 53 is pulled back.

[0042] After the two sets of clamping arms 50 are flipped to drive multiple sets of clamping arms 53 to clamp and fix the curved outer wall of the log, the operation of the sixth hydraulic cylinder 57 is centrally controlled. When the sixth hydraulic cylinder 57 is working, the sixth hydraulic cylinder 57 drives the clamping plate 58 close to the end face of the log. After further driving, the tapered part of the clamping rod 59 is inserted into the wall surface of the log, which can achieve another clamping and fixation of the end face of the log.

[0043] Finally, the horizontal cross-section of the log is clamped and fixed by the second clamping jaw unit, and the arc-shaped outer wall of the log is clamped and fixed by the first clamping jaw unit. At the same time, the end face of the log is clamped and fixed in cooperation with the sixth hydraulic cylinder 57, the clamping plate 58 and the clamping rod 59. Finally, one end of the log can be clamped and fixed. The second clamping jaw unit and the first clamping jaw unit are arranged in a vertically symmetrical state. Therefore, by clamping and fixing the log at the same time, the stability of the clamping of one end of the log can be guaranteed. The clamping jaw plate 43 forms a surface extrusion contact with the horizontal cross-section of the log. The multiple groups of clamping arms 53 on the two clamping jaw arm plates 50 are in contact with the log. The arc-shaped outer wall is in multi-level line contact, and the stability of one end of the log can be ensured by forming an upper and lower cooperating extrusion fixation with the clamping claw plate 43. According to the same operation method, the same operation needs to be performed on the other end of the log. After the fixation of both ends of the log is completed, the operation of the two first servo motors 28 is centrally controlled. When the first servo motor 28 is working, the first servo motor 28 drives the driving gear 29 to rotate, and the driving gear 29 then drives the ring gear 27 to rotate, and the ring gear 27 drives the turning cylinder 25 to rotate. After the two turning cylinders 25 rotate synchronously in the same direction, the log can be turned in situ.

[0044] It is worth noting that the operation of the two first servo motors 28 can be controlled by a centralized controller (such as Siemens S7-1500, Omron NJ series, etc.) through a unified instruction source to send control signals. The centralized controller is a prior art and will not be described in detail here. It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A log turning device for a band saw, comprising a body (10), both sides of the body (10) being provided with turning assemblies for turning logs on the body (10), characterized in that: The flip assembly includes a sliding module, a lifting module, a driving module and a limit flip module; The sliding module comprises a sliding seat (11) fixedly mounted on the top wall surfaces on both sides of the body (10) by bolts, and a sliding block (13) is slidably mounted in the sliding seat (11); The lifting module comprises a lifting base (15) fixedly mounted on the top wall of the sliding block (13) by bolts, a lifting upper seat (18) is provided above the lifting base (15), and a second hydraulic cylinder (16) is provided between the lifting upper seat (18) and the lifting base (15); The driving module comprises a third hydraulic cylinder (19) fixedly mounted on a wall surface of a lifting upper seat (18) close to one end of the log, a connecting sleeve (22) fixedly mounted on the piston end wall surface of the third hydraulic cylinder (19), a plurality of connecting plates (23) fixedly mounted on the outer wall of the connecting sleeve (22), an end of the connecting plate (23) away from the connecting sleeve (22) being in an expanded state, and the plurality of connecting plates (23) are arranged together with the limit flip module; The position-limiting and turning module comprises an outer cylinder (24), a turning cylinder (25), a rotating unit, a first clamping unit, a second clamping unit and a driving unit. The turning cylinder (25) is arranged in the cavity of the outer cylinder (24), the rotating unit is arranged in the outer cylinder (24), the first clamping unit, the second clamping unit and the driving unit are arranged on the turning cylinder (25), the driving unit cooperates with the first clamping unit and the second clamping unit to limit the end of the log, and the rotation unit controls the rotation of the limited log.

2. The log turning device for a band saw according to claim 1, characterized in that: The top of the sliding seat (11) is provided with a sliding groove (12), and the side of the sliding seat (11) on the same side as the log is hollowed out. A first hydraulic cylinder (14) is fixedly installed on the inner wall of the other side of the sliding seat (11) cavity, and the piston end of the first hydraulic cylinder (14) is fixedly connected to one end of the sliding block (13); the second hydraulic cylinder (16) is fixedly installed on the top wall of the lifting base (15), and the piston end of the second hydraulic cylinder (16) is fixedly connected to the top wall of the lifting upper seat (18). Guide columns (17) are also fixedly installed on the top wall of the lifting base (15) on both sides of the second hydraulic cylinder (16), and the guide columns (17) are movably connected to the lifting upper seat (18); a stabilizing sleeve (20) is also fixedly provided on the front end shell of the third hydraulic cylinder (19), and a plurality of stabilizing rods (21) for enhancing stability are also fixedly installed between the stabilizing sleeve (20) and the lifting upper seat (18).

3. The log turning device for a band saw according to claim 1, wherein: The connecting plates (23) are distributed in a ring array state. The outer cylinder (24) and the other ends of the multiple groups of connecting plates (23) are fixed together by bolts. Both ends of the outer cylinder (24) and the turning cylinder (25) are in a hollow state. Ring bodies (26) are rotatably mounted on both ends of the outer wall of the turning cylinder (25) through bearings. The two ring bodies (26) are fixedly mounted on the inner wall of the outer cylinder (24). The rotating unit includes a ring gear (27) fixedly sleeved on the outer wall of the turning cylinder (25). A first servo motor (28) is fixedly mounted on the wall surface of one of the ring bodies (26) through a bracket. A driving gear (29) is fixedly mounted on the output end of the first servo motor (28) through a shaft coupling. The driving gear (29) is meshed with the ring gear (27).

4. The log turning device for a band saw according to claim 3, characterized in that: The number of the driving units is two, and the two driving units are respectively arranged together with the first clamping jaw unit and the second clamping jaw unit. The driving units include a mounting plate (37), a connecting arm (36), a driving cover (35) and a guide column (34). The number of the connecting arm (36) and the mounting plate (37) are both two. The two connecting arms (36) are respectively fixedly mounted on the outer walls of both sides of the driving cover (35). The driving cover (35) is located outside the turning cylinder (25). The mounting plate (37) is arc-shaped. The mounting plate (37) is aligned with the corresponding one of the connecting arms (36). The connecting arm (36) on the side is fixedly connected, and the mounting plate (37) is fixedly mounted on the outer wall of the turning cylinder (25) by bolts. The wall surface of one side of the driving cover (35) close to the turning cylinder (25) is in a rectangular hollow state. One end of the guide column (34) is movably arranged in the cavity of the driving cover (35). Guide grooves (31) are opened on the wall surfaces on both sides of the symmetrical part of the turning cylinder (25). The guide grooves (31) penetrate the turning cylinder (25), and the guide columns (34) extend into the cavity of the turning cylinder (25) through the guide grooves (31).

5. The log turning device for a band saw according to claim 4, characterized in that: The driving unit further comprises a second servo motor (38), which is fixedly mounted on a side wall of the driving cover (35) through a bracket, and an output end of the second servo motor (38) is fixedly connected to a lead screw (39) through a shaft coupling, the lead screw (39) passes through a side wall of the driving cover (35), and the lead screw (39) extends into the cavity of the driving cover (35), and the other end of the lead screw (39) is rotatably connected to the inner wall of the cavity of the driving cover (35), and a screw hole is provided at one end of the guide column (34) located in the cavity of the driving cover (35), and the screw hole of the guide column (34) is threadedly connected to the lead screw (39), and one end of the guide column (34) is limitedly slid in the cavity of the driving cover (35), and a screw hole is also provided on the wall of the flip cylinder (25) outside each guide groove (31). The limiting groove (30) is provided, and limiting blocks (33) are fixedly installed on both side walls corresponding to the position of the guide column (34) and the limiting groove (30). The limiting blocks (33) are located in the cavity of the limiting groove (30). The outer side of the limiting groove (30) is also equipped with a stop shell (32). The guide column (34) passes through the stop shell (32). The stop shell (32) is fixedly connected to the wall of the flip cylinder (25) by bolts. The limiting blocks (33) are slidably installed between the stop shell (32) and the wall of the limiting groove (30). The end of the guide column (34) away from the drive cover (35) is also fixedly installed with a fourth hydraulic cylinder (40). The piston end of the fourth hydraulic cylinder (40) is fixedly connected to the drive seat (41). The drive seat (41) is arranged together with the first clamping jaw unit and the second clamping jaw unit.

6. The log turning device for a band saw according to claim 5, characterized in that: The second clamping jaw unit comprises a clamping jaw plate (43), which is a rectangular plate body. The clamping jaw plate (43) is fixedly connected to the driving seat (41), and a plurality of groups of claw grooves (44) are formed on a wall surface of the clamping jaw plate (43) away from the driving seat (41), and the claw grooves (44) are tapered.

7. The log turning device for a band saw according to claim 5, characterized in that: The first clamping unit comprises a connecting plate (42), a clamping arm plate (50), a side wing plate (45), a fifth hydraulic cylinder (48) and a clamping arm, the connecting plate (42) is fixedly connected to the driving seat (41), the number of the clamping arm plate (50) and the side wing plate (45) are two groups, the clamping arm plate (50) is arc-shaped, two second ear seats (52) are fixedly installed on the side wall of the connecting plate (42) away from the driving seat (41) by bolts, one end of the clamping arm plate (50) is rotatably connected to the second ear seat (52) by a pin shaft, the side wing plate (45) is fixedly installed on the side wall of the connecting plate (42) close to the driving seat (41) by bolts, and the side wing plate (45) and the clamping arm plate (50) are positioned up and down. Correspondingly, the side wing plate (45) is L-shaped, and a first ear seat (46) is fixedly installed on a side wall of the side wing plate (45) close to the clamping arm plate (50) by bolts. The first ear seat (46) is rotatably installed with a rotating seat (47) through a pin shaft. One end of the fifth hydraulic cylinder (48) is fixedly connected to the rotating seat (47). An ear plate (49) is fixedly installed on the arc-shaped wall of the two clamping arm plates (50). The ear plate (49) is also arc-shaped. A plurality of ear canals (51) are provided on the ear plate (49). The piston end of the fifth hydraulic cylinder (48) is also fixedly connected to the rotating seat (47). The other end of the rotating seat (47) is rotatably connected to the ear canal (51) through a pin shaft. Each clamping arm plate (50) is provided with a plurality of clamping arms.

8. The log turning device for a band saw according to claim 7, wherein: Each of the clamping arms is composed of two clamping arms (53) and a fixing rod (60), the fixing rod (60) is fixed between the two clamping arms (53), the clamping arm (53) is an arc-shaped body, one side of the clamping arm (53) is a horizontal cross-section portion, and the other side of the clamping arm (53) is an arc-shaped surface portion, the arc-shaped surface portion of the clamping arm (53) faces the outer wall of the log, and the arc-shaped surface portion of the clamping arm (53) is provided with an inner concave clamping groove (54), and the arc-shaped surface portions of the clamping arm (53) on both sides of the clamping groove (54) form a tapered surface, the fixing rod (60) is fixedly connected to the clamping arm plate (50) and forms a through-hole, and the clamping arms (53) are located on both sides of the clamping arm plate (50).

9. The log turning device for a band saw according to claim 8, characterized in that: A side arm (55) is fixedly mounted on the horizontal cross-section of the clamping arm (53) at one end away from the log by means of bolts. A portion of the side arm (55) extends along the outer side of the clamping arm (53) toward the end away from the log. The other portion of the side arm (55) is L-shaped. The L-shaped portion of the side arm (55) is located on the side of the corresponding clamping arm (53) away from the log. A sixth hydraulic cylinder (57) is fixedly mounted on the L-shaped free end of the side arm (55). A clamping disc (58) is fixedly mounted on the piston end of the sixth hydraulic cylinder (57). A plurality of clamping rods (59) are fixedly mounted on the wall surface of the clamping disc (58) on one side facing the log. The end of the clamping rod (59) is tapered.

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