A semi-steel full-automatic tire trimming machine

Abstract

The present invention relates to a semi-steel fully automatic tire hair trimming machine, which includes a tire feeding mechanism, a driving mechanism and a main machine. The tire feeding mechanism is arranged on one side of the head of the driving mechanism and is used to convey the tire to the tire clamping and feeding mechanism of the driving mechanism. The driving mechanism is used to clamp the tire and drive the tire to rotate so as to convey the tire to the tire repairing position of the main machine. The main machine is used to trim the tread and sidewall of the tire. The automatic hair trimming machine of the present invention realizes the rapid and automatic trimming of the tread rubber hair of the tire, improves the tire quality, reduces the labor cost, improves the automation level of the factory, and earns profits for the enterprise.

Description

Technical Field

[0001] The present invention relates to a semi-steel full-automatic tire hair trimming machine, belonging to the technical field of automobile tire manufacturing. Background Art

[0002] At present, in most existing tire factories, the tire hairs of semi-steel tires are trimmed manually or by an automatic hair trimming machine. Manual trimming has high labor costs, uneven residual heights of the rubber hairs after tire hair trimming, and often due to the shaking of the hand during manual hair trimming, the tire is damaged or even scrapped.

[0003] At present, the automatic hair trimming machines on the market need to accelerate the tire speed from zero to the tire trimming speed before tire trimming, and there is a separate tire kicking action after tire trimming is completed, which results in a decrease in tire trimming efficiency. In addition, the existing automatic hair trimming machines do not trim the overflow glue on the tire sidewall. Summary of the Invention

[0004] The purpose of the present invention is to propose a semi-steel full-automatic tire hair trimming machine in view of the defects existing in the prior art, so as to realize the rapid and automatic trimming of the tire tread rubber hairs, improve the tire quality, reduce the labor cost, improve the automation level of the factory, and win profits for the enterprise.

[0005] To achieve the above purpose, the present invention provides a semi-steel full-automatic tire hair trimming machine, which is characterized in that: it includes a tire feeding mechanism, a driving mechanism and a main machine. The tire feeding mechanism is arranged on one side of the head of the driving mechanism and is used to convey the tire to the tire clamping and conveying mechanism of the driving mechanism; the driving mechanism is used to clamp the tire and drive the tire to rotate so as to convey the tire to the tire trimming position of the main machine; the main machine is used to trim the hair on the tire tread and tire sidewall.

[0006] The further optimized technical solution of the present invention is as follows:

[0007] Preferably, the tire feeding mechanism includes a tire feeding mechanism frame and a tire blocking door, a tire clamping mechanism, a left tire straightening mechanism and a right tire straightening mechanism arranged on the tire feeding mechanism frame. The tire clamping mechanism is arranged inside the tire feeding mechanism frame and is used to clamp and straighten the tire entering the tire feeding mechanism frame; the tire blocking door is arranged on the outlet side of the tire feeding mechanism frame and can slide up and down along the outlet of the tire feeding mechanism frame, and is used to temporarily block the tire inside the tire feeding mechanism frame; the left tire straightening mechanism and the right tire straightening mechanism are symmetrically arranged outside the outlet of the tire feeding mechanism frame to symmetrically straighten the tire coming out of the tire feeding mechanism frame on the left and right so that the tire enters the driving mechanism in a proper posture.

[0008] Preferably, guide rails are respectively arranged on both sides of the frame of the tire feeding mechanism. The tire retaining door is installed on the guide rails and can slide up and down along the guide rails. Moreover, the tire retaining door is connected to a tire retaining door driving cylinder located above the tire feeding mechanism. The tire clamping mechanism includes a tire clamping plate and a group of tire clamping shafts. The tire clamping shafts are movably connected to the tire clamping plate or the frame of the tire feeding mechanism. The two tire clamping shafts are connected by a tire clamping arm. One of the tire clamping shafts is connected to a tire clamping mechanism cylinder through a push arm. The left alignment mechanism includes a bracket and a left alignment mechanism cylinder arranged on the bracket. The piston rod of the left alignment mechanism cylinder is connected to a push plate through a cylinder connection head. A left tire retaining plate is arranged on the outer side of the push plate. The right alignment mechanism includes a right alignment mechanism cylinder and a right tire retaining plate. The right tire retaining plate is movably connected to the frame of the tire feeding mechanism. The right alignment mechanism cylinder is connected to the right tire retaining plate to drive the right tire retaining plate to swing up and down.

[0009] Preferably, the driving mechanism includes a first roller, a second roller and a tire clamping and feeding mechanism. The first roller and the second roller are both driven by a first motor. Small rollers driven by a second motor are respectively arranged on the first roller and the second roller. A centering mechanism for positioning a tire rotating at a high speed at the tire repairing position is arranged between the first roller and the second roller. The tire clamping and feeding mechanism can move relative to the small rollers, the first roller and the second roller, and is used for clamping and conveying the tire along the small rollers, the first roller and the second roller.

[0010] Preferably, the centering mechanism includes a centering driving cylinder. The piston rod of the centering driving cylinder is respectively connected to a left taper roller and a right taper roller through a force arm. The small roller is sleeved on the end of the first roller or the second roller. The first roller and the second roller are respectively installed on the frame of the driving mechanism. A driving mechanism linear guide rail extending along the length direction thereof is arranged on the frame of the driving mechanism. The tire clamping and feeding mechanism is connected to a tire feeding driving cylinder. The tire feeding driving cylinder drives the tire clamping and feeding mechanism to move on the driving mechanism linear guide rail. The tire clamping and feeding mechanism includes a tire clamping and feeding mechanism mounting seat and a left clamping roller, a right clamping roller, a guide rail, a tire clamping driving cylinder and a right tire retaining assembly installed on the tire clamping and feeding mechanism mounting seat. The left clamping roller is slidably connected to the guide rail through a left tire retaining arm. The right clamping roller is slidably connected to the guide rail through the right tire retaining assembly. The left clamping roller and the right clamping roller are respectively connected to the tire clamping driving cylinder.

[0011] Preferably, the right tire retaining assembly includes a sliding seat, a swing arm, a tire retaining driving cylinder and a tire retaining shaft. The sliding seat is arranged on the guide rail and can move along the guide rail. A swing arm is respectively and movably connected to four corners of the top end of the sliding seat. The swing arm is movably connected to a tire retaining shaft. The tire retaining shaft is connected to the right clamping roller. The swing arm swings back and forth under the drive of the tire retaining driving cylinder.

[0012] Preferably, the main machine includes a lifting mechanism, a middle knife mechanism, a side knife mechanism, a pressing wheel mechanism and a pressing wheel assembly. The middle knife mechanism, the side knife mechanism and the pressing wheel mechanism are all installed on the lifting mechanism, and the middle knife mechanism and the side knife mechanism are driven by the lifting mechanism to move up and down along it. The pressing wheel mechanism is used to position the tire in the tire repair position, and a pressing wheel assembly is provided on the pressing wheel mechanism. The pressing wheel assembly includes an upper knife assembly for trimming the top tread of the tire. The middle knife mechanism is used to trim the side tread of the tire, and the side knife mechanism is used for trimming the tire sidewall.

[0013] Preferably, the lifting mechanism includes a main machine frame, a lifting seat and a lifting ball screw. The lifting ball screw is connected to a lifting mechanism servo motor through a coupling. The lifting seat is sleeved on the lifting ball screw and can move along the lifting ball screw. The lifting frame is installed on the lifting seat.

[0014] In the above structure, a linear guide rail for the lifting mechanism is provided on the main machine frame. The lifting ball screw is parallel to the linear guide rail for the lifting mechanism and is installed on one side of the main machine frame. One side of the lifting seat is connected to the lead screw nut sleeved on the lifting ball screw, and the opposite side is connected to the slider provided on the linear guide rail for the lifting mechanism.

[0015] Preferably, the middle knife mechanism includes a middle knife base and a middle knife ball screw. A linear guide rail for the middle knife mechanism is provided on the middle knife base. The middle knife ball screw is parallel to the linear guide rail for the middle knife mechanism and is movably installed on the middle knife base. The lead screw nut of the middle knife ball screw is connected to a middle knife screw connecting block and the slider provided on the linear guide rail for the middle knife mechanism. The middle knife screw connecting block is connected to a middle knife extending arm. A cylinder is arranged above the middle knife extending arm. The cylinder is connected to a middle knife assembly through a first ball spline.

[0016] In the above mechanism, the cylinder is located above the middle knife extending arm. The head of the cylinder is connected to a first ball spline. The head of the first ball spline is connected to the middle knife assembly. And the first ball spline is connected to a swing cylinder through a moving plate. The swing cylinder is arranged on a fixing plate located at the head of the middle knife extending arm.

[0017] Preferably, the side knife mechanism includes a side knife base and a side knife ball screw. A linear guide rail for the side knife mechanism is provided on the side knife base. The side knife ball screw is parallel to the linear guide rail for the side knife mechanism and is movably installed on the side knife base. The lead screw nut of the side knife ball screw is connected to a side knife screw connecting block and the slider provided on the linear guide rail for the side knife mechanism. The side knife screw connecting block is connected to a side knife guide rail seat through a rigid side knife extending arm. Movable side knife assemblies are respectively arranged at both ends of the side knife guide rail seat.

[0018] In the above structure, the side cutter screw rod connecting block is connected to the rigid side cutter extending arm, the head of the side cutter extending arm is connected to the side cutter guide rail seat, side cutter cylinders are respectively arranged at both ends of the side cutter guide rail seat, the side cutter cylinders are connected to a transition plate that can slide along the side cutter guide rail on the side cutter guide rail seat, and the transition plate is connected to the side cutter assembly through a tool bar.

[0019] Preferably, the press wheel mechanism includes a press wheel mechanism ball screw, the screw nut of the press wheel mechanism ball screw is connected to a fixed seat, the fixed seat is connected to a lifting arm, and a press wheel assembly is installed on the lifting arm. The press wheel assembly includes a press wheel fixing frame, a press roller is arranged at the lower end of the press wheel fixing frame, a ball screw is arranged at the upper end, the screw nut of the ball screw is connected to a moving seat, a second ball spline is arranged on the moving seat, the head of the second ball spline is connected to the upper tool assembly, and the tail is connected to the press wheel assembly cylinder.

[0020] Preferably, the middle tool assembly, the side tool assembly, and the upper tool assembly all include an outer tool box and an inner tool box, a tool is arranged on the inner tool box, an adjusting screw rod is arranged between the outer tool box and the inner tool box, and the lower end shaft hole of the adjusting screw rod can be matched with a pin shaft arranged on the inner tool box.

[0021] In the above structure, the adjusting screw rod adjusts the installation angle of the inner tool box by adjusting the height of the inner tool box. After the adjusting screw rod passes through the inner tool box and the outer tool box from bottom to top in sequence, the nut is fixed at a suitable position at the upper end of the adjusting screw rod according to the angle of the inner tool box, and then the pin shaft fixed on the inner tool box is inserted into the lower end hole of the adjusting screw rod, so that the inner tool box is installed on the outer tool box at a certain angle.

[0022] The present invention adopts a unique double-drive drum and pinch-feed tire mechanism to realize the faster entry and exit of tires from the shearing machine, saving the tire acceleration and kicking time; the multi-tool box design and the precise positioning of the servo enable the shearing machine to not only repair the tread rubber hair of the tire but also trim the sidewall overflow rubber and rubber hair, improving the tire quality; it has a unique tool box cleaning system design, the upper tool has a special dust suction pipeline to collect the rubber hair, the middle tool is cleaned by compressed air, and the side tool is cleaned by compressed air and a scraper at the same time; the single-cantilever structure layout can vacate the space in front of the shearing machine, facilitating maintenance personnel to maintain the equipment. In short, the automatic shearing machine of the present invention realizes the fast and automatic trimming of the tread rubber hair of the tire, improves the tire quality, reduces the labor cost, improves the automation level of the factory, and earns profits for the enterprise. Brief Description of the Drawings

[0023] The following further describes the present invention with reference to the drawings.

[0024] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the tire feeding mechanism in the present invention; Figure 3The front view of the tire feeding mechanism in the present invention; Figure 4 The front view of the tire clamping mechanism in the present invention; Figure 5 The side view of the tire clamping mechanism in the present invention; Figure 6 The schematic diagram of the working state of the tire clamping mechanism in the present invention; Figure 7 The structural schematic diagram of the left aligning mechanism in the present invention; Figure 8 The top view of the left aligning mechanism in the present invention; Figure 9 The front view of the right aligning mechanism in the present invention; Figure 10 The structural schematic diagram of the right aligning mechanism in the present invention; Figure 11 The top view of the driving mechanism in the present invention; Figure 12 The structural schematic diagram of the driving mechanism in the present invention; Figure 13 The front view of the centering mechanism in the present invention; Figure 14 The top view of the centering mechanism in the present invention; Figure 15 The front view of the tire clamping and feeding mechanism in the present invention; Figure 16 The side view of the tire clamping and feeding mechanism in the present invention; Figure 17 The top view of the tire clamping and feeding mechanism in the present invention; Figure 18 The front view of the right tire blocking component in the present invention; Figure 19 The side view of the right tire blocking component in the present invention; Figure 20 The structural schematic diagram of the main machine in the present invention; Figure 21 The left view of the main machine in the present invention; Figure 22 The front view of the main machine in the present invention; Figure 23 The front view of the lifting mechanism in the present invention; Figure 24 The side view of the lifting mechanism in the present invention; Figure 25 The top view of the lifting mechanism in the present invention; Figure 26 The front view of the middle knife mechanism in the present invention; Figure 27 The top view of the middle knife mechanism in the present invention; Figure 28 The side view of the mounting seat of the middle knife mechanism in the present invention; Figure 29 The top view of the side knife mechanism in the present invention; Figure 30 The front view of the side knife mechanism in the present invention; Figure 31 The side view of the side knife mechanism in the present invention; Figure 32 The front view of the pressure wheel mechanism in the present invention; Figure 33 The side view of the pressure wheel mechanism in the present invention; Figure 34 The top view of the pressure wheel mechanism in the present invention; Figure 35 The front view of the pressure wheel assembly in the present invention; Figure 36 The top view of the pressure wheel assembly in the present invention; Figure 37 The side view of the pressure wheel assembly in the present invention; Figure 38 The front view of the knife box assembly in the present invention; Figure 39This is a side view of the knife box assembly in the present invention; Figure 40 This is a working schematic diagram of the upper knife, middle knife, and side knife in the present invention. Detailed implementation manner

[0025] Embodiment 1

[0026] As Figure 1 shown, a semi-steel full-automatic tire trimming machine includes a tire feeding mechanism 1, a driving mechanism 2, and a main machine 3. The main machine 3 and the driving mechanism 2 are installed on a base with a rabbet positioning and at the same level. During installation, it is ensured that the pressing wheel mechanism 304 on the main machine 3 is parallel to the driving pinch roller of the driving mechanism 2, and their front and rear center planes coincide, and the tire trimming positions coincide. The tire feeding mechanism 1 is arranged on one side of the head of the driving mechanism 2 and is used to convey the tire to the tire clamping and conveying mechanism 206 of the driving mechanism 2; the driving mechanism 2 is used to clamp the tire and drive the tire to rotate so as to convey the tire to the tire trimming position of the main machine 3; the main machine 3 is used to trim the tread and sidewall of the tire.

[0027] As Figure 2 and Figure 3 shown, the tire feeding mechanism 1 includes a tire feeding mechanism frame 101 and a tire blocking door 102, a tire clamping mechanism 103, a left tire aligning mechanism 104, and a right tire aligning mechanism 105 arranged on the tire feeding mechanism frame 101. The tire clamping mechanism 103 is arranged inside the tire feeding mechanism frame 101 and is used to clamp and align the tire entering the tire feeding mechanism frame 101; the tire blocking door 102 is arranged on the outlet side of the tire feeding mechanism frame 101 and can slide up and down along the outlet of the tire feeding mechanism frame 101, and is used to temporarily block the tire inside the tire feeding mechanism frame 101; the left tire aligning mechanism 104 and the right tire aligning mechanism 105 are symmetrically arranged outside the outlet of the tire feeding mechanism frame 101 to symmetrically align the tire coming out of the tire feeding mechanism frame 101 from left and right so that the tire enters the driving mechanism 2 in a suitable posture. In addition, guide rails are respectively arranged on both sides of the tire feeding mechanism frame 101. The tire blocking door 102 is installed on the guide rails through bearings and can slide up and down along the guide rails, and the tire blocking door 102 is connected to the tire blocking door driving cylinder located above the tire feeding mechanism 1 through a floating joint. As Figures 4 to 6As shown in the figure, the tire clamping mechanism 103 includes a first tire clamping arm 1031, a tire clamping plate frame 1032, a second tire clamping shaft 1033, a second tire clamping arm 1034, a first tire clamping shaft 1035, a third tire clamping shaft 1036, a tire clamping plate 1037, a fourth tire clamping shaft 1038, a bushing 1039, a push arm 10310, a tire clamping mechanism cylinder 10311, and a bearing 10312. The tire clamping plate frame 1032 is arranged on the outer periphery of the tire clamping plate 1037. The first tire clamping shaft 1035 and the third tire clamping shaft 1036 are respectively movably connected to the tire clamping plate 1037 through the bearing 10312 and the bushing 1039. The second tire clamping shaft 1033 and the fourth tire clamping shaft 1038 are respectively movably connected to the tire feeding mechanism frame 101 through the bearing 10315 and the bushing 1039. In this way, the tire clamping mechanism 103 forms a quadrilateral structure. A first tire clamping arm 1031 is connected between the first tire clamping shaft 1035 and the fourth tire clamping shaft 1038. A second tire clamping arm 1034 is connected between the second tire clamping shaft 1033 and the third tire clamping shaft 1036. The lower end of the second tire clamping shaft 1033 is connected to the push arm 10310. The push arm 10310 is connected to the piston rod of the tire clamping mechanism cylinder 10311. The action of the tire clamping mechanism cylinder 10311 realizes the forward and backward movement of the tire clamping plate 1037, and further realizes the tire clamping action. As Figure 7 and Figure 8 shown in the figure, the left tire aligning mechanism 104 includes a bracket 1041 installed at the outlet of the tire feeding mechanism frame 101 and a left tire aligning mechanism cylinder 1047 arranged on the bracket 1041. A protective cover 1044 is provided on the bracket 1041. The piston rod of the left tire aligning mechanism cylinder 1047 is connected to the push plate 1042 through a cylinder connector 1043. A left tire retaining plate 1046 is arranged on the outer side of the push plate 1042. The left tire aligning mechanism cylinder 1047 is controlled by a 5-port 3-position solenoid valve and can control the pushing distance of the left tire retaining plate 1046 according to the width of different tires. One side of the left tire retaining plate 1046 has a curvature to facilitate tire feeding. A linear guide shaft 1045 arranged in parallel with the cylinder is also connected to the push plate 1042. As Figure 9 and Figure 10 shown in the figure, the right tire aligning mechanism 105 includes a right tire aligning mechanism cylinder 1051, a bearing, a bearing seat 1052, and a right tire retaining plate 1053. The bearing is installed on the bearing seat 1052, and the right tire retaining plate 1053 is movably connected to the tire feeding mechanism frame 101 through the bearing. In this way, the right tire retaining plate 1053 is installed on the tire feeding mechanism frame 101 through the bearing to form a rotation point. The right tire aligning mechanism cylinder 1051 installed on the tire feeding mechanism frame 101 is connected to the right tire retaining plate 1053 to drive the right tire retaining plate 1053 to swing up and down.

[0028] As Figure 11 and Figure 12As shown, the driving mechanism 2 includes a driving mechanism frame 201, a first roller 202, a second roller 203, a small roller 204, a centering mechanism 205, a tire clamping and feeding mechanism 206, a tensioning mechanism 207, a second motor 208, a first motor 209, and a tire feeding driving cylinder 210. The first roller 202 and the second roller 203 are arranged in parallel and are both driven by the first motor 209 to rotate. A small roller 204 driven by the second motor 208 is sleeved at the tire feeding end of both the first roller 202 and the second roller 203. The small roller 204 is movably connected to the first roller 202 or the second roller 203 through a bearing and a circlip. When the small roller 204, the first roller 202, and the second roller 203 rotate, they do not interfere with each other and collide. One end of the first roller 202 is connected to the head of the driving mechanism frame 201 through a bearing, and the other end of the first roller 202 is connected to the tail of the driving mechanism frame 201 through a bearing. One end of the second roller 203 is connected to the head of the driving mechanism frame 201 through a bearing, and the other end of the second roller 203 is directly connected to the tail of the driving mechanism frame 201 through a bearing. The first roller 202 is stepped. The diameter of its first-stage step is the same as the diameter of the second roller 203, and the diameter of the second-stage step is smaller than the diameter of the second roller 203 at the tire discharging position. A height difference is formed between the two, so that the tire is only affected by the second roller 203 at the tire discharging position and directly discharges the tire under the drive of the second roller 203, avoiding the tire kicking action. The first roller 202 and the second roller 203 are both driven by the first motor 209, and the small roller 204 is driven by the second motor 208. The first motor 209 and the second motor 208 are respectively tensioned by the tensioning mechanism 207 through belt pulleys. The first motor 209 and the second motor 208 are respectively controlled by frequency converters to achieve adjustable speed, and further achieve differential operation between the small roller 204 and the first roller 202 and the second roller 203. The first roller 202 and the small roller 204, as well as the second roller 203 and the small roller 204, constitute a structure for driving the tire to rotate. The tire clamping and feeding mechanism 206 is used to clamp the tire and can move relative to the roller. The centering mechanism 205 is used to position the tire rotating at high speed at the tire repairing position. The centering mechanism 205 is arranged between the first roller 202 and the second roller 203. As Figure 13 and Figure 14As shown in the figure, the centering mechanism 205 includes left and right centering drive cylinders 2059 with pistons operating in opposite directions. The piston rods of the left and right centering drive cylinders 2059 are respectively connected to the long-axis gear 2058 and the short-axis gear 2057 through the drive arms 2052. The long-axis gear 2058 and the short-axis gear 2057 are respectively installed in the bearing seat 2056 through bearings. The bearing seat 2056 is arranged on the centering mechanism mounting seat 2051. The short-axis gear 2057 is connected to the left taper roller 2055 through the force arm 2053, and the long-axis gear 2058 is connected to the right taper roller 2054 through the force arm 2053. Both the left taper roller 2055 and the right taper roller 2054 are connected by a roller shaft, bearings, and a taper sleeve. The taper sleeve is connected to the roller shaft through a bearing, and the roller shaft is arranged at the end of the force arm 2053. Gears are provided in the middle of both the short-axis gear 2057 and the long-axis gear 2058, and the two gears in the middle are meshed. Moreover, one end of the short-axis gear 2057 and the long-axis gear 2058 are respectively connected to the force arm 2053 through keyways, and the other end is respectively connected to the drive arm 2052 through keyways. The centering mechanism mounting seat 2051 is installed on the drive mechanism frame 201 through bolts. The left and right centering drive cylinders 2059 respectively drive the short-axis gear 2057 and the long-axis gear 2058 to rotate through the drive arms 2052, and then drive the two force arms 2053 connected to the short-axis gear 2057 and the long-axis gear 2058 to swing. The two force arms 2053 are respectively connected to the left taper roller 2055 and the right taper roller 2054, and the action of the left and right taper rollers clamping towards the middle can be realized. Two drive mechanism linear guide rails extending along its length direction are provided on the drive mechanism frame 201. The tire clamping and feeding mechanism 206 is connected to the tire feeding drive cylinder 210, and the tire feeding drive cylinder 210 can drive the tire clamping and feeding mechanism 206 to move on the drive mechanism linear guide rail. As Figures 15 to 17As shown, the tire clamping and feeding mechanism 206 includes a mounting seat of the tire clamping and feeding mechanism, a left clamping roller 2068, a right clamping roller 2069, an upper guide rail 20612, a lower guide rail 20613, a gear and rack assembly, a left tire clamping driving cylinder 20611, a right tire clamping driving cylinder 20610, a left tire blocking arm 2064, and a right tire blocking assembly 2067 installed in the mounting seat of the tire clamping and feeding mechanism. The centering and clamping actions of the tire can be achieved through the left and right tire clamping driving cylinders. The tire feeding driving cylinder 210 is connected to the mounting seat of the tire clamping and feeding mechanism to drive the entire tire clamping and feeding mechanism to move left and right along the linear guide rail of the driving mechanism on the driving mechanism frame 201. The left and right tire clamping driving cylinders, as well as the upper and lower guide rails, are all arranged on the tire pushing and blocking seat 2061 of the mounting seat of the tire clamping and feeding mechanism. The left clamping roller 2068 is installed on the left tire blocking arm 2064, and the left tire blocking arm 2064 is connected to the slider of the upper guide rail 20612. The right clamping roller 2069 is installed on the right tire blocking assembly 2067, and the right tire blocking assembly 2067 is connected to the slider of the lower guide rail 20613. The left clamping roller 2068 is connected to the piston rod of the right tire clamping driving cylinder 20610 through the gear and rack assembly, and the right clamping roller 2069 is connected to the piston rod of the left tire clamping driving cylinder 20611 through the gear and rack assembly. The piston movement directions of the left and right tire clamping driving cylinders are opposite. The gear and rack assembly includes a gear seat 2065, a gear 2066, an upper rack 2062, and a lower rack 2063. The gear 2066 is installed on the gear seat 2065, and the gear 2066 meshes with the upper and lower racks located on both sides of it respectively. The upper rack 2062 is connected to the piston rod of the right tire clamping driving cylinder 20610 through an ear seat and slides along the upper guide rail 20612 under the drive of the right tire clamping driving cylinder 20610, and the upper rack 2062 is fixedly connected to the left tire blocking arm 2064. The lower rack 2063 is connected to the piston rod of the left tire clamping driving cylinder 20611 through an ear seat and slides along the lower guide rail 20613 under the drive of the left tire clamping driving cylinder 20611, and the lower rack 2063 is fixedly connected to the right tire blocking assembly 2067. As Figure 18 and 19As shown in the figure, the right tire retaining assembly 2067 includes a sliding seat 20671, a swing arm 20672, a pin shaft 20674, a bearing, a tire retaining drive cylinder 20675, and a tire retaining shaft 20673. The sliding seat 20671 is disposed on the lower guide rail 20613 and can move along the lower guide rail 20613. A swing arm 20672 is movably connected to each of the four corners at the top end of the sliding seat 20671. An upper and a lower tire retaining shaft 20673 are movably connected between the four swing arms 20672. The tire retaining shaft 20673 is connected to the right pinch roller 2069. The swing arm 20672 swings back and forth driven by the tire retaining drive cylinder 20675. During operation, the tire retaining drive cylinder 20675 acts to achieve the forward and backward telescoping of the tire retaining shaft 20673. The lower end of the swing arm 20672 is hinged to the sliding seat 20671 through a bearing and the pin shaft 20674, and the upper end of the swing arm 20672 is hinged to the tire retaining shaft 20673 through a bearing and the pin shaft 20674. The swing arm 20672, the pin shaft 20674, the tire retaining shaft 20673, and the upper end of the sliding seat 20671 form a movable parallelogram structure. After the previous tire is sent to the tire outlet position, the parallelogram structure swings backward driven by the unidirectional tire retaining drive cylinder 20675 to make way for the tire to be repaired and return to the tire inlet position. In addition, a tire pushing and retaining roller 20676 for pushing the tire to the tire outlet position is provided outside the right tire retaining assembly 2067.

[0029] During operation, the first roller 202 and the second roller 203 are at the tire repair rotation speed (i.e., 1000 rpm), and the small roller 204 is at the tire receiving rotation speed (i.e., 650 rpm). The tire directly enters the small roller 204 from the tire inlet rack. At this time, the left and right pinch rollers of the tire clamping and feeding mechanism simultaneously clamp toward the middle under the action of the tire clamping drive cylinder and the gear and rack assembly to achieve tire centering. At the same time, the small roller 204 accelerates to 1000 rpm to make it rotate at the same speed as the first roller 202 and the second roller 203. Then, the tire clamping and feeding mechanism 206 is smoothly conveyed to the central position of the centering mechanism 205 under the action of the tire feeding drive cylinder 210. The centering mechanism 205 quickly holds the tire to enable the tire to rotate stably at a high speed at the tire repair position. At the same time, the tire pushing and retaining roller on the right side of the tire clamping and feeding mechanism 206 directly pushes the tire at the original tire repair position to the tire outlet position quickly.

[0030] As Figures 20 to 22As shown in the figure, the main machine 3 includes a lifting mechanism 301, a middle knife mechanism 302, a side knife mechanism 303, a pressing wheel mechanism 304, and a pressing wheel assembly 305. The middle knife mechanism 302, the side knife mechanism 303, and the pressing wheel mechanism 304 are all installed on the lifting mechanism 301, and the middle knife mechanism 302 and the side knife mechanism 303 are driven by the lifting mechanism 301 to move up and down along it. The pressing wheel mechanism 304 is used to position the tire in the tire repair position, and a pressing wheel assembly 305 is provided on the pressing wheel mechanism 304. The pressing wheel assembly 305 includes an upper knife assembly 30514 for trimming the top tread of the tire. The middle knife mechanism 302 is used to trim the side tread of the tire, and the side knife mechanism 303 is used for trimming the sidewall of the tire.

[0031] As Figures 23 to 25 As shown in the figure, the lifting mechanism 301 includes a main frame 3011, a lifting seat 3014, a lifting frame 3015, a lifting ball screw 3016, and a linear guide rail 30115 of the lifting mechanism. Two parallel linear guide rails 30115 of the lifting mechanism are provided on the main frame 3011. The lifting ball screw 3016 is parallel to the linear guide rail 30115 of the lifting mechanism and is installed on one side of the main frame 3011. The upper end of the lifting ball screw 3016 is fixedly connected to the upper support 3012 provided on the upper part of the main frame 3011 through a first bearing 30111 and a bearing gland 3013, and the lower end is fixedly connected to the lower support 3018 provided on the lower part of the main frame 3011 through a second bearing 30112 and a bearing block 3017. One side of the lifting seat 3014 is connected to the lead screw nut sleeved on the lifting ball screw 3016, and the opposite side is connected to the slider provided on the linear guide rail 30115 of the lifting mechanism. The lifting frame 3015 is installed on the lifting seat 3014. The lifting frame 3015 is connected to the first counterweight 30110 through a first steel wire rope 30114 that bypasses the variable pulley block 3019. The lower end of the lifting ball screw 3016 is connected to the lifting mechanism servo motor 30113 through a coupling. When the lifting mechanism servo motor 30113 works, it drives the lifting ball screw 3016 to rotate, thereby driving the lifting seat 3014 to move up and down along the linear guide rail 30115 of the lifting mechanism, causing the lifting frame 3015 to move up and down.

[0032] As Figures 26 to 28As shown in the figure, the middle knife mechanism 302 is inclined and arranged on the lifting frame 3015, including a middle knife base 3021 arranged on the lifting frame 3015. There are two parallel middle knife mechanism linear guide rails 3024 arranged on the middle knife base 3021. The middle knife ball screw 3022 is parallel to the middle knife mechanism linear guide rails 3024 and is movably installed on the middle knife base 3021 through a bearing seat, and is located inside the two middle knife mechanism linear guide rails 3024. One end of the middle knife ball screw 3022 is connected to the middle knife mechanism servo motor 3028 through a coupling. Its lead screw nut is connected to the middle knife lead screw connection block 3029 and the slider arranged on the middle knife mechanism linear guide rail 3024. The middle knife lead screw connection block 3029 is connected to the middle knife extension arm 30210. An induction plate 3025 is installed on the side of the middle knife lead screw connection block 3029. A proximity switch 3027 is arranged outside the middle knife mechanism linear guide rail 3024 on the middle knife base 3021. The proximity switch 3027 is installed on the middle knife base 3021 through a switch bracket 3023. A fixing plate 30215 is installed at the head of the middle knife extension arm 30210. A long guide hole is made on the fixing plate 30215. A cylinder 30211 is suspended above the middle knife extension arm 30210. The head of the cylinder 30211 is connected to the first ball spline 30213. The nut of the first ball spline 30213 is installed on the moving plate 30212. The shaft of the first ball spline 30213 passes through the long guide hole of the fixing plate 30215 and its head is connected to the middle knife assembly 30216. The tail of the swing cylinder 30214 is installed on the fixing plate 30215 and its head is connected to the moving plate 30212. The tail of the cylinder 30211 is connected to the connecting rod 3026. The connecting rod 3026 passes through the long guide hole of the fixing plate 30215 and is then connected to the moving plate 30212. The connecting rod 3026 can swing left and right in the long guide hole. A linear guide rail is arranged below the moving plate 30212. A slider that can move left and right along it is arranged on the linear guide rail. The moving plate 30212 is installed on this slider, causing the moving plate 30212 to make a reciprocating motion on the linear guide rail. When the swing cylinder 30214 acts, it can drive the moving plate 30212 to swing left and right to drive the middle knife assembly 30216 to move left and right. When the middle knife mechanism servo motor 3028 acts, it drives the middle knife mechanism ball screw 3022 to rotate to drive the middle knife lead screw connection block 3029 to move back and forth. At this time, the middle knife extension arm 30210 moves back and forth accordingly. At this time, the cylinder 30211 plays a buffering role. After the deburring is completed, compressed air is provided by the air circuit to clean the knife box of the middle knife assembly 30216.

[0033] As Figures 29 to 31As shown in the figure, the side cutter mechanism 303 is horizontally arranged on the lifting frame 3015 and includes a side cutter base 3031 arranged on the lifting frame 3015. There are two parallel side cutter mechanism linear guide rails 3034 on the side cutter base 3031. The side cutter ball screw 3032 is parallel to the side cutter mechanism linear guide rails 3034 and is movably installed on the side cutter base 3031 through a bearing block, and is located inside the two side cutter mechanism linear guide rails 3034. One end of the side cutter ball screw 3032 is connected to the side cutter mechanism servo motor 3037 through a coupling. Its lead screw nut is connected to the side cutter lead screw connection block 3038 and the slider arranged on the side cutter mechanism linear guide rail 3034. The side cutter lead screw connection block 3038 is connected to the rigid side cutter extension arm 3039. An induction plate 3035 is installed on one side of the side cutter lead screw connection block 3038. A proximity switch 30310 is arranged outside the side cutter mechanism linear guide rail 3034 on the side cutter base 3031. The proximity switch 30310 is installed on the side cutter base 3031 through a switch bracket 3033. The head of the side cutter extension arm 3039 is connected to the side cutter guide rail seat 30311. There are two parallel side cutter guide rails 30312 on the side cutter guide rail seat 30311. The left and right sliders arranged on the side cutter guide rail 30312 are respectively fixedly connected to the transition plate 30313. The transition plate 30313 is connected to the head of the side cutter cylinder 30314. The tail of the side cutter cylinder 30314 is installed on the side cutter guide rail seat 30311. The transition plate 30313 is connected to the side cutter assembly 3036 through a tool bar. In this way, when the side cutter mechanism servo motor 3037 operates, it drives the side cutter mechanism ball screw 3032 to rotate to drive the side cutter lead screw connection block 3038 to move back and forth. At this time, the side cutter extension arm 3039 moves back and forth accordingly and reaches the position of tire overflow glue. The side cutter cylinder 30314 drives the side cutter assembly 3036 to close inward to start fitting the tread to repair the overflow glue. After completion, the scraping cylinder operates to remove the overflow glue in the tool box to prevent blockage.

[0034] As Figures 32 to 34As described above, the pressing wheel mechanism 304 is provided at the top of the main frame 3011 and includes a column 3041, a ball screw 3042 of the pressing wheel mechanism, a counterweight 3043, a fixed seat 3044, a lifting arm 3045, and a servo motor 3046 of the pressing wheel mechanism. Parallelly arranged linear guide rails 30413 of the pressing wheel mechanism are provided on the column 3041. The ball screw 3042 of the pressing wheel mechanism is parallel to the linear guide rails 30413 of the pressing wheel mechanism and is movably installed on the column 3041 through a bearing seat, and is located inside the two linear guide rails 30413 of the pressing wheel mechanism. One end of the ball screw 3042 of the pressing wheel mechanism is connected to a speed reducer 30415 and a servo motor 3046 of the pressing wheel mechanism through a coupling. Its lead screw nut is connected to the fixed seat 3044. The fixed seat 3044 is connected to a slider on the linear guide rails 30413 of the pressing wheel mechanism. The fixed seat 3044 is also connected to the lifting arm 3045. The fixed seat 3044 drives the lifting arm 3045 to move along the linear guide rails 30413 of the pressing wheel mechanism under the drive of the ball screw 3042 of the pressing wheel mechanism. A counterweight 3043 is arranged inside the column 3041. A switch bracket 3048 and an induction plate 3047 are provided on the counterweight 3043. A switch bracket 30410 and a proximity switch 3049 are provided on the column 3041. The counterweight 3043 is connected to the lifting arm 3045 through a second steel wire rope 30412 that bypasses a rolling wheel assembly 30411. During operation, the servo motor 3046 of the pressing wheel mechanism operates to drive the ball screw 3042 of the pressing wheel mechanism to rotate, so as to drive the fixed seat 3044 to move up and down along the linear guide rails 30413 of the pressing wheel mechanism, and further cause the lifting arm 3045 to move up and down accordingly. A pressing wheel assembly 305 is installed on the lifting arm 3045.

[0035] As Figures 35 to 37As shown, the pressing wheel assembly 305 includes a pressing wheel fixing bracket 3051 and a pressing roller 3052. The lower end surface of the pressing wheel fixing bracket 3051 is provided with a left connecting plate 3054 and a right connecting plate 3053. Between the left connecting plate 3054 and the right connecting plate 3053, there are two pressing roller shafts 3055. The pressing roller 3052 is installed on the pressing roller shaft 3055 through bearings. At least one of the pressing roller shafts 3055 is connected to a variable-frequency motor 3056 through a coupling. The upper end surface of the pressing wheel fixing bracket 3051 is provided with two parallel pressing wheel assembly linear guide rails 3057. A left-handed ball screw 3058 and a right-handed ball screw 3059 are installed parallel to the pressing wheel assembly linear guide rails 3057. The left-handed ball screw 3058 and the right-handed ball screw 3059 are connected through a coupling 30510. One end of the right-handed ball screw 3059 is connected to a pressing wheel assembly servo motor 30511. The screw nuts of the left-handed ball screw 3058 and the right-handed ball screw 3059 are respectively connected to a moving seat 30512. The moving seat 30512 is connected to a slider provided on the pressing wheel assembly linear guide rail 3057. The second ball spline 30513 is installed in the moving seat 30512 through hole fit. The head of the second ball spline 30513 is connected to the upper knife assembly 30514, and the tail is connected to the pressing wheel assembly cylinder 30515. The pressing wheel assembly cylinder 30515 is installed on the moving seat 30512 through a bracket. During operation, the variable-frequency motor 3056 drives the pressing roller 3052 to rotate. At the same time, the pressing wheel assembly cylinder 30515 acts to drive the second ball spline 30513 to extend, so that the upper knife assembly 30514 moves downward to the tire tread for tire repair. The pressing wheel assembly servo motor 30511 drives the left-handed and right-handed ball screws to rotate to drive the moving seat 30512 to move left and right. At this time, the upper knife assembly 30514 moves left and right on the tire tread to trim the fluff under the drive of the second ball spline 30513. After fluff trimming, the rubber fluff is collected uniformly through the dust suction pipeline.

[0036] As Figure 38 and 39As shown in the figure, the middle knife assembly 30216, the side knife assembly 3036, and the upper knife assembly 30514 all include an outer knife box 4 and an inner knife box 5. The outer knife box 4 is movably connected to a large rotating shaft 9 disposed in a rotating shaft seat through a deflection joint. The rotating shaft seat is installed on the second ball spline 30513 of the middle knife mechanism 302, the knife rod of the side knife mechanism 303, or the second ball spline 30513 of the press wheel assembly 305. A cutting tool 6 is provided on the inner knife box 5. An adjusting screw 7 is provided between the outer knife box 4 and the inner knife box 5. The lower end shaft hole of the adjusting screw 7 can cooperate with a pin shaft 8 provided on the inner knife box 5. In addition, a small rotating shaft 10 is also provided between the inner knife box 5 and the outer knife box 4. One end of the small rotating shaft 10 is fixed to the outer knife box 4. Before using the adjusting screw 7 to fixedly connect the inner knife box 5 and the outer knife box 4, the inner knife box 5 can be rotated by a certain angle around the small rotating shaft 10, so that the inner knife box 5 is pre-fixed to the outer knife box 4 at a suitable angle. Then, the adjusting screw 7 is used to further adjust the angle of the inner knife box 5, so that the inner knife box 5 and the outer knife box 4 reach the required angle, and finally the cutting tool adapts to the tire tread. In addition, a compressed air joint connected to a compressed air source is connected to the inner knife box 5 of the middle knife assembly 30216 for introducing compressed air to clean the knife box after trimming; a dust collecting joint connected to a dust suction pipeline is connected to the inner knife box 5 of the upper knife assembly 30514 for collecting rubber fluff in the knife box; a compressed air joint connected to a compressed air source is also connected to the inner knife box 5 of the side knife assembly 3036. At the same time, it also includes a rubber scraping cylinder and a steering cylinder. A rubber scraping plate is provided on the cylinder rod of the rubber scraping cylinder for removing the overflow glue in the inner knife box 5 to prevent blockage after trimming, and the steering cylinder is used to drive the entire side knife assembly 3036 to rotate by a certain angle.

[0037] When the fully automatic shearing machine is working, the barcode of the tire is first scanned so that the shearing machine can obtain the tire information. The tire blocking door 102 on the tire feeding mechanism frame 101 is lowered. After the tire enters the tire feeding mechanism 1, the tire clamping mechanism 103 on the left side clamps the tire. At the same time, the left straightening mechanism 104 pushes the left tire blocking plate 1046 to a suitable position according to the size of the tire, and opens the tire blocking door 102. The tire enters the driving mechanism 2 and rotates on the small roller 204. The speed of the small roller 204 is increased to 1000rpm. The clamping rollers on both sides of the tire clamping mechanism 206 clamp the tire to make it centered. At the same time, the baffle of the right straightening mechanism rotates to the top and releases the tire. After the tire repair is completed in front, the centering mechanism 205 is opened, and the tire clamping mechanism 206 sends the tire to the position of the centering mechanism 205 under the action of the cylinder. At the same time, the previous tire is sent to the tire outlet, and the tire automatically runs to the tire outlet conveyor line to enter the next process. The centering mechanism 205 quickly holds the tire, and the right tire blocking assembly 2067 retracts. Driven by the servo motor, the lifting frame 3015 rises from the origin position to the horizontal center position of the tire, and the variable frequency motor drives the pressure roller 3052 to rotate. The pressure roller mechanism 304 drops rapidly from the origin under the action of the servo motor, so that the pressure roller 3052 gently presses the tire. At this time, the tire rotates stably in the tire repairing position. The upper knife assembly 30514 droops to the tangent position of the tire tread under the action of the cylinder. The servo motor rotates, and the two upper knives repair the rubber hair on the tread driven by the left and right rotating ball screws. The middle knife mechanism 302 extends under the drive of the servo motor, and the cylinder moves to make the middle knife assembly 30216 reach the tangent position of the tire. Driven by the servo motor, the side knife mechanism 303 makes the side knife assembly 3036 reach the tire overflow position. The side knife assembly 3036 fits to the side of the tire under the action of the cylinder, and the side knife rotates around the rotating shaft as the curvature of the tread changes. In this way, the upper knife, the middle knife, and the side knife act simultaneously to start tire repair. After the tire repair is completed, the above operation is repeated for the next tire.

[0038] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A semi-steel fully automatic tire shearing machine, characterized in that: It includes a tire feeding mechanism (1), a driving mechanism (2) and a main machine (3). The tire feeding mechanism (1) is arranged on one side of the head of the driving mechanism (2) and is used to convey the tire to the tire clamping and conveying mechanism (206) of the driving mechanism (2). The driving mechanism (2) is used to clamp the tire and drive the tire to rotate so as to convey the tire to the tire repairing position of the main machine (3). The main machine (3) is used to trim the tread and sidewall of the tire. The tire feeding mechanism (1) includes a tire feeding mechanism frame (101) and a tire blocking door (102), a tire clamping mechanism (103), a left aligning mechanism (104) and a right aligning mechanism (105) arranged on the tire feeding mechanism frame (101). The tire clamping mechanism (103) is arranged inside the tire feeding mechanism frame (101) and is used to clamp and align the tire entering the tire feeding mechanism frame (101). The tire blocking door (102) is arranged on the outlet side of the tire feeding mechanism frame (101) and can slide up and down along the outlet of the tire feeding mechanism frame (101) and is used to temporarily block the tire inside the tire feeding mechanism frame (101). The left aligning mechanism (104) and the right aligning mechanism (105) are symmetrically arranged outside the outlet of the tire feeding mechanism frame (101) and are used to symmetrically align the tire coming out of the inside of the tire feeding mechanism frame (101) on the left and right so that the tire enters the driving mechanism (2) in a proper posture. The driving mechanism (2) includes a first roller (202), a second roller (203) and a tire clamping and conveying mechanism (206). The first roller (202) and the second roller (203) are both driven by a first motor (209). Small rollers (204) driven by a second motor (208) are respectively arranged on the first roller (202) and the second roller (203). A centering mechanism (205) for positioning the tire rotating at a high speed at the tire repairing position is arranged between the first roller (202) and the second roller (203). The tire clamping and conveying mechanism (206) can move relative to the small roller (204) and the first roller (202), the second roller (203) and is used to clamp and convey the tire along the small roller (204) and the first roller (202), the second roller (203).

2. The semi-steel full-automatic tire trimming machine according to claim 1, characterized in that: On both sides of the frame (101) of the tire feeding mechanism, guide rails are respectively provided. The tire retaining door (102) is installed on the guide rails and can slide up and down along the guide rails, and the tire retaining door (102) is connected to a tire retaining door driving cylinder located above the tire feeding mechanism (1); the tire clamping mechanism (103) includes a tire clamping plate (1037) and a group of tire clamping shafts, and the tire clamping shafts are movably connected to the tire clamping plate (1037) or the frame (101) of the tire feeding mechanism. The two tire clamping shafts are connected by a tire clamping arm, and one of the tire clamping shafts is connected to a tire clamping mechanism cylinder (10314) through a push arm (10310); the left alignment mechanism (104) includes a bracket (1041) and a left alignment mechanism cylinder (1047) provided on the bracket (1041). The piston rod of the left alignment mechanism cylinder (1047) is connected to a push plate (1042) through a cylinder connecting head (1043), and a left tire retaining plate (1046) is provided on the outer side of the push plate (1042); the right alignment mechanism (105) includes a right alignment mechanism cylinder (1051) and a right tire retaining plate (1053). The right tire retaining plate (1053) is movably connected to the frame (101) of the tire feeding mechanism, and the right alignment mechanism cylinder (1051) is connected to the right tire retaining plate (1053) to drive the right tire retaining plate (1053) to swing up and down.

3. The semi-steel full-automatic tire trimming machine according to claim 1, characterized in that: The centering mechanism (205) includes a centering driving cylinder (2059). The piston rod of the centering driving cylinder (2059) is respectively connected to a left tapered roller (2055) and a right tapered roller (2054) through a force arm (2053); the small roller (204) is sleeved on the end of the first roller (202) or the second roller (203). The first roller (202) and the second roller (203) are respectively installed on the frame (201) of the driving mechanism; the tire clamping and feeding mechanism (206) is connected to a tire feeding driving cylinder (210), and the tire feeding driving cylinder (210) drives the tire clamping and feeding mechanism (206) to move; the tire clamping and feeding mechanism (206) includes a tire clamping and feeding mechanism mounting seat and a left clamping roller (2068), a right clamping roller (2069), a guide rail, a tire clamping driving cylinder and a right tire retaining assembly (2067) installed on the tire clamping and feeding mechanism mounting seat. The left clamping roller (2068) is slidably connected to the guide rail through a left tire retaining arm (2064), the right clamping roller (2069) is slidably connected to the guide rail through the right tire retaining assembly (2067), and the left clamping roller (2068) and the right clamping roller (2069) are respectively connected to the tire clamping driving cylinder.

4. The semi-steel full-automatic tire shearing machine according to claim 3, wherein: The right tire blocking assembly (2067) includes a sliding seat (20671), a swing arm (20672), a tire blocking drive cylinder (20675) and a tire blocking shaft (20673). The sliding seat (20671) is arranged on the guide rail and can move along the guide rail. At the four corners of the top end of the sliding seat (20671), a swing arm (20672) is movably connected respectively. The swing arm (20672) is movably connected with a tire blocking shaft (20673). The tire blocking shaft (20673) is connected with the right pinch roller (2069). The swing arm (20672) swings back and forth driven by the tire blocking drive cylinder (20675).

5. The semi-steel full-automatic tire shearing machine according to claim 1, wherein: The main machine (3) includes a lifting mechanism (301), a middle knife mechanism (302), a side knife mechanism (303), a pressure wheel mechanism (304) and a pressure wheel assembly (305). The middle knife mechanism (302), the side knife mechanism (303) and the pressure wheel mechanism (304) are all installed on the lifting mechanism (301), and the middle knife mechanism (302) and the side knife mechanism (303) are driven by the lifting mechanism (301) to move up and down along it. The pressure wheel mechanism (304) is used to position the tire in the tire repair position, and a pressure wheel assembly (305) is provided on the pressure wheel mechanism (304). The pressure wheel assembly (305) includes an upper knife assembly for trimming the top tread of the tire. The middle knife mechanism (302) is used to trim the side tread of the tire, and the side knife mechanism (303) is used for trimming the sidewall of the tire.

6. The semi-steel full-automatic tire trimming machine according to claim 5, characterized in that: The lifting mechanism (301) includes a lifting seat (3014) and a lifting ball screw (3016). The lifting ball screw (3016) is connected to the lifting mechanism servo motor (30113) through a coupling. The lifting seat (3014) is sleeved on the lifting ball screw (3016) and can move along the lifting ball screw (3016). A lifting frame (3015) is installed on the lifting seat (3014). The middle knife mechanism (302) includes a middle knife ball screw (3022). The screw nut of the middle knife ball screw (3022) is connected to the middle knife screw connecting block (3029). The middle knife screw connecting block (3029) is connected to the middle knife extending arm (30210). A cylinder (30211) is arranged above the middle knife extending arm (30210). The cylinder (30211) is connected to the middle knife assembly (30216) through a first ball spline (30213). The side knife mechanism (303) includes a side knife ball screw (3032). The screw nut of the side knife ball screw (3032) is connected to the side knife screw connecting block (3038). The side knife screw connecting block (3038) is connected to the side knife guide rail seat (30311) through a rigid side knife extending arm (3039). Movable side knife assemblies (3036) are respectively arranged at both ends of the side knife guide rail seat (30311). The pressure wheel mechanism (304) includes a pressure wheel mechanism ball screw (3042). The screw nut of the pressure wheel mechanism ball screw (3042) is connected to a fixed seat (3044). The fixed seat (3044) is connected to a lifting arm (3045). A pressure wheel assembly (305) is installed on the lifting arm (3045).

7. The semi-steel full-automatic tire trimming machine according to claim 6, wherein: The pressure wheel assembly (305) includes a pressure wheel fixing frame (3051). A pressure roller (3052) is arranged at the lower end of the pressure wheel fixing frame (3051), and a ball screw is arranged at the upper end. The screw nut of the ball screw is connected to a moving seat (30512). A second ball spline (30513) is arranged on the moving seat (30512). The head of the second ball spline (30513) is connected to the upper knife assembly (30514), and the tail is connected to the pressure wheel assembly cylinder (30515).

8. The semi-steel full-automatic tire trimming machine according to claim 7, characterized in that: The middle knife assembly (30216), the side knife assembly (3036), and the upper knife assembly (30514) all include an outer knife box (4) and an inner knife box (5). A tool (6) is arranged on the inner knife box (5). An adjusting screw (7) is arranged between the outer knife box (4) and the inner knife box (5). The lower end shaft hole of the adjusting screw (7) can be matched with a pin shaft (8) arranged on the inner knife box (5).

Images