A turning device for valve stem machining

Abstract

The application relates to the technical field of valve post machining, in particular to a turning device for valve post machining, which comprises a rack, a clamping mechanism for fixing a valve post arranged on the rack, a feeding mechanism for feeding the clamping mechanism, and a cutting mechanism for cutting the valve post; the valve post can be continuously fed into the containing groove of the swing arm through the feeding device, then the third driving device drives the swing arm to swing to the clamping jaw, the valve post is clamped through the opening and closing of the second driving device, the first driving device drives the clamping jaw to rotate, then the valve post is cut through the cutting mechanism, the whole action can be automatically completed, the manual participation work is saved, and the operation precision is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valve post machining, in particular to a turning device for valve post machining. BACKGROUND

[0002] Valve posts are needed in spray valves, and the valve posts need to be cut with grooves on the sides and bevels on the ends. At present, although some automatic machining equipment exists in the industry, the actions of feeding the valve post to the clamping jaw, axially inserting the valve post into the clamping jaw, rotating the clamping jaw and cutting with the cutter need to be coordinated by multiple sets of transmission structures and multiple power sources, and there are problems of complex structure, large space occupation and high cost, and the automatic machining equipment is only suitable for large-scale production. In small and medium-sized production scenes, the traditional machine tool machining mode of manually fixing the valve posts on the chuck one by one is still widely used, the multiple sets of transmission structures are saved, the space is saved, and the one-time cost is low, but the precision of manual feeding is unstable, and machining errors are prone to occur, thereby affecting the qualified rate of the valve posts. The application aims to provide a full-automatic turning device with simple structure and cost adaptation to small and medium-sized production, and solve the adaptability problems of traditional manual operation and existing complex automatic equipment. SUMMARY

[0003] The application aims to provide a turning device for valve post machining, and the device is used for work, so that the problems in the background are solved.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a turning device for valve post machining, comprising a rack, a clamping mechanism for fixing a valve post, a feeding mechanism for feeding the clamping mechanism, and a cutting mechanism for cutting the valve post.

[0005] The clamping mechanism comprises a clamping jaw, a first driving device for driving the clamping jaw to rotate, and a second driving device for driving the clamping jaw to open and close.

[0006] The feeding mechanism comprises an oscillating arm hingedly arranged on the rack, a third driving device for driving the oscillating arm to reciprocally oscillate, and a feeding device for continuously feeding the oscillating arm, the oscillating arm is provided with an accommodating groove matched with the feeding device, the rear side of the accommodating groove is provided with an arc-shaped top plate, a push plate is arranged in the accommodating groove, and the oscillating arm is provided with a fourth driving device for driving the push plate to axially approach the clamping jaw.

[0007] The cutting mechanism comprises a plurality of cutters and a fifth driving device for driving the cutters to intermittently approach the valve post.

[0008] Further, the rack is provided with a support seat, the rear side of the clamping jaw is provided with a guide rod, the clamping jaw and the guide rod are jointly arranged in the support seat, and the first driving device drives the clamping jaw to rotate by driving the guide rod to rotate.

[0009] Further, the clamping jaw is hingedly arranged on a guide rod, a plurality of clamping jaws are arranged on the guide rod in a circumferential direction, a first elastic member is arranged between the clamping jaws and tends to force the clamping jaws to swing outward, the outer side of the clamping jaw is a slope, the opening on the support seat is smaller than the outer diameter of the clamping jaw after being expanded by the first elastic member, and the second driving device drives the clamping jaw to open and close by driving the guide rod to move forward and backward.

[0010] Further, the first driving device is a motor arranged in a frame, a rod sleeve that is keyed with the guide rod is rotatably arranged on the support seat, the output shaft of the motor drives the rod sleeve to rotate through a synchronous belt, a synchronous shaft is rotatably arranged on the frame, the synchronous shaft is driven to rotate by the motor through a transmission structure, a second elastic member that tends to force the swing arm to move away from the clamping jaw is arranged on the frame, and the third driving device is a first cam arranged on the synchronous shaft, and a first lever is arranged on the swing arm and cooperates with the first cam.

[0011] Further, the cutting tool includes a beveling cutter and a grooving cutter, a first moving seat that can move up and down is arranged on the support seat and cooperates with the beveling cutter, a third elastic member that tends to force the first moving seat to move away from the clamping jaw is arranged on the support seat, the fifth driving device includes a first jacking rod hingedly arranged on the support seat and a second cam arranged on the synchronous shaft, the first jacking rod is arranged on the upper side of the first moving seat, and a second lever is arranged on the first jacking rod and cooperates with the second cam; a second moving seat that can move left and right is arranged on the support seat and cooperates with the grooving cutter, a fourth elastic member that tends to force the second moving seat to move away from the clamping jaw is arranged on the support seat, and the fifth driving device further includes a second jacking rod hingedly arranged on the support seat and a third cam arranged on the synchronous shaft, the second jacking rod is arranged on the second moving seat, and a third lever is arranged on the second jacking rod and cooperates with the third cam.

[0012] Further, the grooving cutter is in the shape of a saw disc, a motor that drives the grooving cutter to rotate is arranged on the second moving seat, an inductive switch that controls the start and stop of the motor is arranged on the motor, a flap is swingably arranged on the motor, a cover is arranged on the flap and cooperates with the inductive switch, a torsion spring is arranged at the hinge of the flap and tends to force the flap to swing in a direction in which the cover can cover the inductive switch, and the active end of the flap cooperates with the second jacking rod.

[0013] Further, the fourth driving device includes a swing rod hingedly arranged on the swing arm, a torsion spring is arranged at the hinge of the swing rod and tends to force the swing rod to swing back to the original position, a horizontal plate is arranged on the lower side of the swing rod, and a push block that pushes the horizontal plate horizontally is arranged on the side of the second cam.

[0014] Further, the second driving device comprises a fourth cam and a fifth cam, a swing plate is swingably arranged on the support base, a fourth shifting rod is arranged on the swing plate and extends to between the fourth cam and the fifth cam, a shifting groove is arranged on the other side of the swing plate, and a shifting ball is arranged on the guide rod and matched with the shifting groove.

[0015] Further, the shifting ball is movably sleeved on the guide rod, and a top disc is arranged at the end of the guide rod, and a plurality of top claws are arranged on the top disc and top the shifting ball.

[0016] Further, the feeding device comprises a vibrating disc and a feeding pipe, and the feeding pipe is directed to the containing groove of the swing arm.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows: the present application can continuously feed the valve column into the containing groove of the swing arm through the feeding device, then the swing arm is swung to the clamping jaw by the third driving device, the valve column is clamped by the opening and closing of the second driving device, the clamping jaw is driven to rotate by the first driving device, and then the valve column is cut by the cutting mechanism, the whole operation can be automatically completed, the manual work is saved, and the operation precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of an embodiment of the present application;

[0019] Figure 2 is Figure 1 an enlarged view of A in FIG. 1;

[0020] Figure 3 is a perspective view of cooperation transmission of the first driving device and the second driving device;

[0021] Figure 4 is Figure 3 an enlarged view of B in FIG. 1;

[0022] Figure 5 is a perspective view of cooperation of the swing plate and the shifting ball to drive the guide rod to move;

[0023] Figure 6 is a perspective view of cooperation of the second cam and the cross rod;

[0024] Figure 7 is a perspective view of cooperation of the swing rod and the swing arm;

[0025] Figure 8 is a perspective view of transmission at the beveling cutter;

[0026] Figure 9 is a perspective view of transmission at the grooving cutter.

[0027] In the drawings: 1-frame; 2-clamping mechanism; 3-feeding mechanism; 4-cutting mechanism; 11-supporting seat; 13-synchronous shaft; 21-clamping jaw; 22-first driving device; 23-second driving device; 31-swinging arm; 32-first cam; 33-feeding device; 41-cutter; 42-fifth driving device; 111-first moving seat; 112-third elastic member; 113-second moving seat; 114-fourth elastic member; 131-transmission shaft; 132-cross shaft; 133-reduction box; 211-guiding rod; 212-first elastic member; 221-rod sleeve; 222-synchronous belt; 223-second elastic member; 231-fourth cam; 232-fifth cam; 233-swinging plate; 234-fourth shifting rod; 235-shifting groove; 236-shifting ball; 311-containing groove; 312-top plate; 313-push plate; 314-fourth driving device; 315-first shifting rod; 331-vibrating disc; 332-feeding tube; 333-feeding channel; 334-hanging ring; 411-beveling cutter; 412-grooving cutter; 421-first top rod; 422-second cam; 423-second shifting rod; 424-second top rod; 425-third cam; 426-third shifting rod; 427-biasing groove; 1131-motor; 1132-inductive switch; 1133-flap; 1134-shutter; 2111-top disc; 2112-top jaw; 2311-shifting block; 2321-avoiding groove; 3141-shifting rod; 3142-cross plate; 3143-push block; 3144-cross rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] As Figures 1-9The embodiment aims to provide a turning device for valve post machining, which comprises a rack 1, a clamping mechanism 2 arranged on the rack 1 and used for fixing a valve post, a feeding mechanism 3 arranged on the rack 1 and used for feeding the valve post to the clamping mechanism 2, and a cutting mechanism 4 arranged on the rack 1 and used for cutting the valve post; the overall working process is that the feeding mechanism 3 feeds the valve post to the clamping mechanism 2, the clamping mechanism 2 clamps and rotates the valve post, and then the cutting mechanism 4 cuts the machining position of the valve post;

[0031] The clamping mechanism 2 comprises a clamping jaw 21, a first driving device 22 used for driving the clamping jaw 21 to rotate, and a second driving device 23 used for driving the clamping jaw 21 to open and close; the clamping jaw 21 clamps the valve post, the first driving device 22 drives the clamping jaw 21 to rotate and cut the valve post, and the second driving device 23 drives the clamping jaw 21 to open and close to feed and take the valve post;

[0032] As shown in Figure 6 , 7 , the feeding mechanism 3 comprises a swing arm 31 hingedly arranged on the rack 1, a third driving device used for driving the swing arm 31 to reciprocally swing, and a feeding device 33 used for continuously feeding the swing arm 31; the swing arm 31 is provided with a containing groove 311 matched with the feeding device 33, the rear side of the containing groove 311 is provided with an arc-shaped top plate 312, the containing groove 311 is provided with a push plate 313, and the swing arm 31 is provided with a fourth driving device 314 used for driving the push plate 313 to axially approach the clamping jaw 21; the feeding device 33 feeds the swing arm 31, the valve post at the front end is arranged in the containing groove 311, the third driving device drives the swing arm 31 to swing, the swing arm 31 carries the valve post at the front end to the clamping jaw 21, during which the top plate 312 is arranged at the feeding device 33 to avoid the subsequent valve post from leaking, after the valve post at the front end reaches the clamping jaw 21, the fourth driving device 314 drives the push plate 313 to approach the clamping jaw 21, then the clamping jaw 21 clamps the valve post, the fourth driving device 314 drives the push plate 313 to retreat and reset, and the third driving device drives the swing arm 31 to swing back and reset, thereby preparing the feeding action of the next valve post;

[0033] As shown in Figures 8-9 , the cutting mechanism 4 comprises a plurality of cutters 41 and a fifth driving device 42 used for driving the cutters 41 to intermittently approach the valve post; when the clamping jaw 21 clamps and rotates the valve post, the fifth driving device 42 drives the cutters 41 to approach the valve post to cut, and then the cutters 41 retreat to prepare the cutting of the next valve post;

[0034] As shown in Figures 3-5 , preferably, the rack 1 is provided with a support seat 11, the rear side of the clamping jaw 21 is provided with a guide rod 211, and the clamping jaw 21 and the guide rod 211 are arranged in the support seat 11; the first driving device 22 drives the guide rod 211 to rotate to drive the clamping jaw 21 to rotate;

[0035] Preferably, the clamping jaw 21 is hingedly arranged on the guide rod 211, a plurality of clamping jaws 21 are arranged on the guide rod 211 in the circumferential direction, a first elastic member 212 is arranged between the clamping jaws 21 and tends to force the clamping jaws 21 to swing outward, the outer side of the clamping jaw 21 is a slope, the opening on the support base 11 is smaller than the outer diameter of the clamping jaw 21 after being expanded by the first elastic member 212, and the second driving device 23 drives the clamping jaw 21 to open and close by driving the guide rod 211 to move forward and backward; in the embodiment, the first elastic member 212 is a spring, three clamping jaws 21 are arranged in the circumferential direction, when the second driving device 23 drives the guide rod 211 to move forward, the outer side of the clamping jaw 21 extends out of the opening of the support base 11, the clamping jaw 21 is opened by the action of the spring, and the valve post is ready to be put in; when the second driving device 23 drives the guide rod 211 to move backward, the outer side of the clamping jaw 21 is matched into the opening of the support base 11, the clamping jaw 21 is compressed to be tightened, and the valve post is clamped for subsequent operation;

[0036] Preferably, the first driving device 22 is a motor arranged in the rack 1, a rod sleeve 221 is rotatably arranged on the support base 11 and is keyed with the guide rod 211, the output shaft of the motor drives the rod sleeve 221 to rotate through a synchronous belt 222, a synchronous shaft 13 is rotatably arranged on the rack 1, the synchronous shaft 13 is rotated by the motor through a transmission structure, in the embodiment, the transmission structure includes a transmission shaft 131 which is in gear transmission with the motor, a horizontal shaft 132 which is matched with the transmission shaft through bevel gears, and a speed reducer 133 which is in transmission with the horizontal shaft 132 through a transmission belt, the synchronous shaft 13 reduces the rotation speed through the speed reducer, a second elastic member 223 is arranged on the rack 1 and tends to force the swing arm 31 to move away from the clamping jaw 21, the third driving device is a first cam 32 arranged on the synchronous shaft 13, and a first lever 315 is arranged on the swing arm 31 and matched with the first cam 32; the second elastic member 223 is a spring, the swing arm 31 is matched with the first cam 32 through the first lever 315, when the first cam 32 is matched with the first lever 315 in the part with larger diameter, the first lever 315 and the swing arm 31 are driven to swing, so that the synchronous shaft 13 and the first cam 32 are circularly rotated to drive the swing arm 31 to swing;

[0037] As Figures 8-9As shown, preferably, the cutter 41 comprises a beveling cutter 411 and a grooving cutter 412, the support base 11 is provided with a first moving base 111 movable up and down in cooperation with the beveling cutter 411, the support base 11 is provided with a third elastic member 112 tending to force the first moving base 111 away from the clamping jaw 21, the fifth driving device 42 comprises a first top rod 421 hingedly arranged on the support base 11 and a second cam 422 arranged on the synchronous shaft 13, the first top rod 421 is on the upper side of the first moving base 111, the first top rod 421 is provided with a second shifting rod 423 in cooperation with the second cam 422, the synchronous shaft 13 drives the second cam 422 to rotate cyclically, the first moving base 111 is matched with the second cam 422 through the second shifting rod 423, when the second cam 422 is matched with the second shifting rod 423 at the part with larger diameter, the first top rod 421 is swung downward to push the first moving base 111 to move downward against the elastic force of the third elastic member 112, so that the beveling cutter 411 approaches the rotating valve post to perform beveling cutting, after the cutting is completed, the second cam 422 is rotated to the part with smaller diameter to be matched with the second shifting rod 423, the first moving base 111 moves upward under the elastic force of the third elastic member 112 to swing the first top rod 421 upward, and the second shifting rod 423 is pressed on the second cam 422 to wait for the next cyclic swing; the support base 11 is provided with a second moving base 113 movable left and right in cooperation with the grooving cutter 412, the support base 11 is provided with a fourth elastic member 114 tending to force the second moving base 113 away from the clamping jaw 21, and the fifth driving device 42 further comprises a second top rod 424 hingedly arranged on the support base 11 and a third cam 425 arranged on the synchronous shaft 13, the second top rod 424 is on the second moving base 113, the second top rod 424 is provided with a third shifting rod 426 in cooperation with the third cam 425, the synchronous shaft 13 drives the third cam 425 to rotate cyclically, the second moving base 113 is matched with the third cam 425 through the third shifting rod 426, in this embodiment, the third cam 425 is arranged in parallel with the synchronous shaft 13, the third cam 425 is provided with a bias groove 427, when the third cam 425 is matched with the third shifting rod 426 at the bias groove 427, the third shifting rod 426 drives the second top rod 424 to swing horizontally, the second top rod 424 pushes the second moving base 113 to move to the clamping jaw 21 against the elastic force of the fourth elastic member 114, the grooving cutter 412 on the second moving base 113 approaches the rotating valve post to perform grooving cutting, after the cutting is completed, the third cam 425 is rotated to the bias groove 427 to be separated from the third shifting rod 426, the third shifting rod 426 drives the second top rod 424 to swing back, the second moving base 113 is reset under the elastic force of the fourth elastic member 114 to prepare for the next grooving cutting of the valve post; in this embodiment, the third elastic member 112 and the fourth elastic member 114 are both springs;

[0038] Preferably, the groove cutter 412 is in the shape of a saw disc, the second moving seat 113 is provided with a motor 1131 for driving the groove cutter 412 to rotate, the motor 1131 is provided with an inductive switch 1132 for controlling the start and stop of the motor 1131, the motor 1131 is swingably provided with a flap 1133, the flap 1133 is provided with a cover 1134 matched with the inductive switch 1132, the hinge of the flap 1133 is provided with a torsion spring (not shown in the figure) which tends to force the flap 1133 to swing in a direction that can cover the inductive switch 1132, and the active end of the flap 1133 is matched with the second top rod 424; the groove cutter 412 in the shape of a saw disc has a longer service life than a conventional cutter, the direction in which the motor drives the groove cutter 412 to rotate needs to be opposite to the direction in which the valve post rotates, when the second top rod 424 pushes the motor towards the clamping jaw 21, it will first push against the flap 1133 to swing, the cover 1134 will swing away from the front side of the inductive switch 1132, at this time the motor starts, then the second top rod 424 pushes the motor to approach the valve post, and the groove cutter 412 performs cutting on the valve post; after the cutting is completed, the second top rod 424 retreats, the elastic force of the fourth elastic member 114 drives the motor and the groove cutter 412 to move away from the valve post, after the motor resets, the second top rod 424 continues to retreat, the torsion spring drives the flap 1133 to swing, the cover 1134 resets to cover the front side of the inductive switch 1132, and the motor stops rotating, thus completing a cutting cycle of the valve post;

[0039] As shown in Figure 6 、 7 Preferably, the fourth driving device 314 includes a swing rod 3141 hingedly arranged on the swing arm 31, the hinge of the swing rod 3141 is provided with a torsion spring (not shown in the figure) which tends to force the swing rod 3141 to swing back to the original position, the lower side of the swing rod 3141 is provided with a horizontal plate 3142, the side of the second cam 422 is provided with a push block 3143 for horizontally pushing the horizontal plate 3142, the support seat 11 is provided with a horizontal rod 3144 between the push block 3143 and the horizontal plate 3142, when the swing arm 31 rotates to the clamping jaw 21, the push block 3143 rotates past the horizontal rod 3144 following the second cam 422, which will push the horizontal rod 3144, the horizontal rod 3144 pushes the horizontal plate 3142, so that the swing rod 3141 swings, and drives the push plate 313 to push the valve post out to the clamping jaw 21;

[0040] As shown in Figures 3-5As shown, preferably, the second driving device 23 comprises a fourth cam 231 and a fifth cam 232, and a swing plate 233 is swingably arranged on the support base 11, the swing plate 233 is provided with a fourth pushing rod 234 extending to between the fourth cam 231 and the fifth cam 232, and a pushing groove 235 is arranged on the other side of the swing plate 233, the pushing groove 235 is matched with a pushing ball 236 arranged on the guide rod 211, the pushing ball 236 is clamped in the pushing groove 235, and the pushing ball 236 can move along the pushing groove 235 to meet the slight displacement of the pushing ball 236 in the pushing groove 235 when the swing plate 233 swings, the fourth cam 231 and the fifth cam 232 are coaxially arranged with the synchronous shaft 13, the fourth cam 231 is provided with a pushing block 2311 matched with the fourth pushing rod 234 on the inner side of the fourth cam 231, and the fifth cam 232 is provided with an avoiding groove 2321 matched with the fourth pushing rod 234 on the inner side of the fifth cam 232, when the synchronous shaft 13 rotates, the pushing block 2311 on the fourth cam 231 first contacts the fourth pushing rod 234, so that the fourth pushing rod 234 swings backward to the avoiding groove 2321 of the fifth cam 232, then the other side of the swing plate 233 swings forward, the swing plate 233 drives the pushing ball 236 to move forward through the pushing groove 235, that is, the action of moving the guide rod 211 forward is realized, so that the clamping jaw 21 is opened; after the valve column is put into the clamping jaw 21, the synchronous shaft 13 rotates the fourth pushing rod 234 to be separated from the avoiding groove 2321 of the fifth cam 232, so that the fourth pushing rod 234 swings forward, then the other side of the swing plate 233 swings backward, the swing plate 233 drives the pushing ball 236 to move backward through the pushing groove 235, the action of moving the guide rod 211 backward is realized, so that the clamping jaw 21 clamps the valve column;

[0041] Preferably, the pushing ball 236 is movably sleeved on the guide rod 211, and the end of the guide rod 211 is provided with a top disc 2111, a plurality of top claws 2112 are arranged on the top disc 2111 in the circumferential direction and top the pushing ball 236, the swing plate 233 drives the pushing ball 236 to move forward and backward on the guide rod 211, the pushing ball 236 can drive the top disc 2111 and the guide rod 211 to move forward and backward by cooperating with the top claws 2112, and the cooperation between the pushing ball 236 and the top claws 2112 can be completely along the axial direction of the guide rod 211, so as to avoid the jamming of the guide rod 211 when the guide rod 211 moves due to the tangential force generated by the swing plate 233 swinging;

[0042] As Figures 1-2As shown, preferably, the feeding device 33 comprises a vibrating disc 331 and a feeding pipe 332, the feeding pipe 332 is directed to the accommodating groove 311 of the swing arm 31; in the embodiment, a feeding channel 333 spirally upward is arranged in the vibrating disc 331, the feeding pipe 332 is directed to the lower side of the upper end of the feeding channel 333 obliquely upward, the upper end of the feeding channel 333 is provided with a "J" shaped hanging ring 334, one end of the valve column has a through hole, and the other end is closed, the valve column vibrates on the feeding channel 333 in the axial direction to feed, after being sent to the upper end of the feeding channel 333, the valve column will be topped to the needle-shaped bottom edge of the hanging ring 334, if the through hole of the valve column is laterally forward, the bottom edge of the hanging ring 334 is inserted into the through hole of the valve column, the valve column is conveyed forward while swinging up with the hanging ring 334, until the bottom of the valve column is separated from the feeding channel 333, then the hanging ring 334 and the valve column swing downward together, the upper end of the feeding pipe 332 is arranged at the position where the hanging ring 334 and the valve column swing downward and fall, the valve column falls into the feeding pipe 332 to feed; if the closed end of the valve column faces forward, the hanging ring 334 will be pushed open, then the valve column is conveyed forward to separate from the feeding channel 333 and falls down, will not fall into the feeding pipe 332, but falls back to the vibrating disc 331 to vibrate and feed again, thus, the valve column can fall into the feeding pipe 332 to feed in the same direction, so that the direction of automatic feeding and automatic discharging is fixed.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only preferred examples of the present application, and are not used to limit the present application, various changes and improvements of the present application can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A turning apparatus for machining valve columns, characterized in that: It includes a frame, on which are provided a clamping mechanism for fixing the valve column, a feeding mechanism for feeding material to the clamping mechanism, and a cutting mechanism for cutting the valve column; The clamping mechanism includes a jaw, a first driving device for driving the jaw to rotate, and a second driving device for driving the jaw to open and close. The feeding mechanism includes a swing arm hinged on the frame, a third driving device for reciprocating swing of the swing arm, and a feeding device for continuously feeding the swing arm. The swing arm is provided with a receiving groove in conjunction with the feeding device. An arc-shaped top plate is provided on the rear side of the receiving groove. A push plate is provided in the receiving groove. The swing arm is provided with a fourth driving device for driving the push plate to approach the gripper along the axial direction. The cutting mechanism includes several cutting tools and a fifth driving device that drives the cutting tools to approach the valve stem intermittently; A support base is provided on the frame, and a guide rod is provided on the rear side of the gripper. The gripper and the guide rod are both arranged in the support base. The first driving device drives the gripper to rotate by driving the guide rod to rotate. The gripper is hinged on the guide rod, and multiple grippers are arranged circumferentially on the guide rod. A first elastic element is arranged between the grippers to force the grippers to swing outward. The outer side of the gripper is a slope. The opening on the support base is smaller than the outer diameter of the gripper after it is opened by the first elastic element. The second driving device drives the gripper to open and close by driving the guide rod to move back and forth. The first driving device is a motor installed in the frame. A rod sleeve that cooperates with the guide rod key is rotatably installed on the support base. The output shaft of the motor drives the rod sleeve to rotate through a synchronous belt. A synchronous shaft is rotatably installed on the frame. The synchronous shaft is driven to rotate by the motor through a transmission structure. A second elastic element that tends to force the swing arm away from the gripper is installed on the frame. The third driving device is a first cam installed on the synchronous shaft. A first lever is installed on the swing arm in cooperation with the first cam. The fifth driving device includes a first push rod hinged to the support base and a second cam mounted on the synchronous shaft. The first push rod rests on the upper side of the first movable seat, and a second lever is mounted on the first push rod in cooperation with the second cam. The fifth driving device also includes a second push rod hinged to the support base and a third cam mounted on the synchronous shaft. The second push rod rests on the second movable seat, and a third lever is mounted on the second push rod in cooperation with the third cam. The second drive device includes a fourth cam and a fifth cam. A swing plate is oscillatingly mounted on the support base. A fourth lever is mounted on the swing plate, extending between the fourth cam and the fifth cam. A lever groove is mounted on the other side of the swing plate. A lever ball is mounted on the guide rod in conjunction with the lever groove.

2. The turning apparatus for valve column machining according to claim 1, characterized in that: The cutting tool includes a beveling tool and a groove tool. A first movable seat that can move up and down is provided on the support base in conjunction with the beveling tool. A third elastic element is provided on the support base to tend to force the first movable seat away from the gripper. A second movable seat that can move left and right is provided on the support base in conjunction with the groove tool. A fourth elastic element is provided on the support base to tend to force the second movable seat away from the gripper.

3. The valve column machining turning device according to claim 2, characterized in that: The grooved blade is saw disc shaped. The second movable seat is equipped with a motor that drives the grooved blade to rotate. The motor is equipped with an induction switch that controls the start and stop of the motor. The motor is equipped with a rocker arm that can swing. A cover plate is provided on the rocker arm in conjunction with the induction switch. A torsion spring is provided at the hinge of the rocker arm that tends to force the rocker arm to swing in the direction that the cover plate can cover the induction switch. The movable end of the rocker arm is engaged with the second push rod.

4. The turning device for valve column machining according to claim 2, characterized in that: The fourth driving device includes a rocker arm hinged to the rocker arm, a torsion spring at the hinge of the rocker arm that tends to force the rocker arm to swing back to its original position, a horizontal plate on the lower side of the rocker arm, and a pusher block on the side of the second cam that pushes the horizontal plate laterally.

5. The turning apparatus for valve column machining according to claim 1, characterized in that: The ball is movably mounted on a guide rod, and a top plate is provided at the end of the guide rod. Several claws are provided on the top plate along the circumference, which rest on the ball.

6. The turning apparatus for valve column machining according to claim 1, characterized in that: The feeding device includes a vibratory plate and a feeding pipe, the feeding pipe pointing towards the receiving groove of the swing arm.

Images