Contact tube punching equipment

Abstract

The invention relates to the field of contact tube machining equipment, in particular to contact tube punching equipment which comprises a rack. A feeding mechanism, a plurality of main shaft clamping mechanisms used for clamping bars and driving the bars to rotate and a punching mechanism are arranged on the machine frame. The main shaft clamping mechanism comprises a pneumatic chuck; the feeding mechanism is used for conveying bars to each pneumatic chuck; one end, for clamping the bar, of the pneumatic chuck is a machining end; the punching mechanism comprises a plurality of punching devices fixedly arranged on the linear sliding table. The rack is further provided with a center pointing mechanism used for pointing the center and a discharging mechanism. The center pointing mechanism is arranged on the linear sliding table and used for pointing the centers of the multiple bars on the pneumatic chuck at the same time. The discharging mechanism is used for bar positioning and receiving of the machining end of the pneumatic chuck and collection and sweeping of machined workpieces. The feeding mechanism ejects the machined workpieces at the machining end of the pneumatic chuck down while conveying the bars. The automatic punching machine is high in automation degree and very ideal in punching efficiency, centrality and quality.

Description

Technical Field

[0001] The invention relates to the field of conductive nozzle processing equipment, in particular to conductive nozzle punching equipment. Background Art

[0002] The conductive nozzle is a consumable part of welding equipment and belongs to welding consumables. The metal nozzle at the end of the welding gun, which is used to guide the welding wire, is the conductive nozzle. The conductive nozzle is generally made of copper (chrome zirconium copper, copper, etc.). During the conductive nozzle processing, it is necessary to punch holes in the bar workpiece. In order to ensure the accuracy of the punching, it is generally necessary to point the center of the bar. The so-called point center is the prefabricated precise positioning of the hole processing through the center drill bit, so as to guide the drill bit to perform hole processing later and reduce errors.

[0003] Therefore, in order to complete the hole processing of the conductive nozzle, it is often necessary to first perform the centering of the bar material; then the bar material with the centering performed is clamped on the punching equipment for punching. This operation not only affects the processing efficiency, but also because the centering and punching are not performed on the same machine, and the bar material is transferred, it is easy to cause processing errors during processing, resulting in uneven punching quality of the conductive nozzle.

[0004] In order to solve this problem, people thought about whether the point center device and the punching device could be completed on one device, thereby reducing the transfer of workpieces. Therefore, a device with the functions of point center and punching has emerged. The device is set up in such a way that the point center device and the punching device are set on the XY axis servo slide, and the point center device and the punching device are arranged along the Y axis. The operation mode of the device is: first use the XY axis servo slide to move in the Y direction, then move the point center device to the processing position, and then the XY axis servo slide moves in the X direction to perform point centering; after the centering is completed, the XY axis servo slide returns to the X direction, and then the XY axis servo slide moves in the Y direction to move the punching device to the processing position, and then the XY axis servo slide moves in the X direction to perform punching.

[0005] Although this method can reduce the movement of the bar, the existing XY-axis servo slide is manually set and driven by a lead screw in the initial stage. The movement accuracy cannot meet the accuracy requirements when the conductive nozzle is punching. Therefore, in actual use, the punching accuracy still needs to be improved.

[0006] At the same time, the feeding mechanism of the existing conductive nozzle punching equipment is also relatively complicated (refer to patent CN204546094U), which generally adopts direct feeding at the processing end of the pneumatic chuck. Such a design makes it easy to affect the feeding efficiency when the feeding and unloading actions are connected. Summary of the invention

[0007] The purpose of the present invention is to provide a conductive nozzle punching device with high punching efficiency, high punching center degree and high punching quality.

[0008] The technical scheme for achieving the purpose of the present invention is as follows: the conductive nozzle punching equipment in the present invention comprises a frame; the frame is provided with a feeding mechanism, a plurality of spindle clamping mechanisms and a punching mechanism for clamping rods and driving the rods to rotate; the spindle clamping mechanism comprises a rotating spindle that can be rotated under the drive and a pneumatic chuck fixedly arranged on the rotating spindle and can be rotated under the drive of the rotating spindle; the feeding mechanism is used to transport the rods to each pneumatic chuck; one end of the pneumatic chuck for clamping the rods is the processing end; the punching mechanism comprises a plurality of punching devices fixedly arranged on a linear slide for simultaneously punching holes in the rods at the processing ends of each pneumatic chuck; the linear slide performs a linear reciprocating slide along the axial direction of the rotating spindle; a point center mechanism and a unloading mechanism are also provided on the frame; the point center mechanism is arranged on the linear slide and is used to simultaneously point the center of multiple rods on the pneumatic chuck; the unloading mechanism comprises a slide assembly, a positioning assembly, a pushing assembly, a receiving assembly, a The cam is a device for activating the camshaft movement and moving the camshafts toward the control panel, the cam being used to move the workpieces toward the control panel, the control panel being used to move the workpieces toward the control panel, the control panel being used to move the workpieces toward the control panel, and the control panel being used to move the workpieces toward the control panel.

[0009] Furthermore, the above-mentioned pneumatic chuck is a pneumatic chuck with a through hole; the rotating spindle is provided with a feeding channel that is connected to the through hole of the pneumatic chuck and forms a feeding channel for the rod to pass through; one end of the feeding channel is the processing end of the pneumatic chuck, and the other end is the feeding end for the rod to enter; the loading mechanism includes a vibration plate, a conveying pipe, a first linear module, a loading plate assembly, a second linear module, a push rod assembly and a positioning cylinder; one end of the conveying pipe is connected to the discharge port of the vibration plate, and the other end of the conveying pipe is fixedly connected to the frame; the first linear module is installed on the frame; the loading plate assembly includes a material plate, and the material plate is provided with a plurality of loading through holes corresponding to the feeding ends of each feeding channel; each loading through hole on the material plate is provided with a first locking device that can lock the rod inside The feeding tray is fixedly connected to the slider of the first linear module; the feeding tray is driven by the first linear module to connect and communicate with the feeding outlet of the feeding tube in turn for each loading through hole, and to correspond one by one with the feeding end of each feeding channel for each loading through hole; the positioning cylinder is arranged opposite to the feeding outlet of the feeding tube, and a channel for sliding the feeding tray is formed between the positioning cylinder and the feeding outlet of the feeding tube; a sensor is arranged at the free end of the telescopic rod of the positioning cylinder; when the loading through hole is connected to the feeding outlet of the feeding tube, the telescopic rod of the positioning cylinder moves toward the loading through hole, and senses whether there is a rod in the loading through hole through the sensor, and limits the position of the rod in the loading through hole at the same time; The push rod group includes multiple push rods corresponding to the feed ends of the feeding channels, and each push rod is opposite to the feed end of each feeding channel; each push rod is slidably arranged on the frame; each push rod is fixedly connected to the mounting plate; the mounting plate is fixedly connected to the slider of the second linear module; when the material tray moves to the feed end of each feeding channel, each push rod is driven by the second linear module to push the rods in each loading through hole on the material tray to the processing end of each pneumatic chuck.

[0010] Furthermore, a push rod group is slidably provided on the above-mentioned mounting frame; one end of the push rod group is fixedly connected to the driving end of the second driving device fixedly connected to the mounting frame, and the other end of the push rod group is fixedly connected to the positioning plate; the push rod group slides when driven by the second driving device, and drives the positioning plate to move; the positioning plate moves toward the processing end of the pneumatic chuck when driven by the second driving device, and is used to limit the extension amount of the rod material at the processing end of each pneumatic chuck; the material receiving trough is located below the positioning plate.

[0011] Furthermore, the positioning plate is provided with a plurality of sensing heads corresponding one to one with the processing ends of the pneumatic chucks; the sensing heads are used to sense whether there is a bar at the processing end of the pneumatic chuck.

[0012] Furthermore, the above-mentioned punching device includes a drill spindle that can rotate and clamp the drill bit under the drive of a driving motor; a plurality of annular proximity sensing switches corresponding to the drill bits are provided on the mounting frame; when the mounting frame is located at the processing end of the pneumatic chuck, the sensing holes of each annular proximity sensing switch correspond to each drill bit one by one; each annular proximity sensing switch is used to sense whether the drill bit is broken when the drill bit of each punching device enters the corresponding sensing hole as the linear slide moves.

[0013] Furthermore, the above-mentioned punching device includes a drill spindle that can rotate and clamp the drill bit under the drive of a driving motor; the point center mechanism includes a rotating flap, a center drill bit, a rotating shaft and a driving component for driving the rotating shaft to rotate up and down; the rotating shaft is rotatably set on a linear slide, and the rotating flap is fixedly set on the rotating shaft; a center drill bit for point center is fixedly set on the rotating flap; the number of center drill bits is consistent with the number of drill bits, and the center drill bits correspond to the drill bits one by one; when the rotating flap is in the downward flipped state, the center drill bit is located in front of the drill bit, and the center drill bit and the corresponding drill bit are on the same axis.

[0014] Furthermore, the above-mentioned driving assembly includes a rodless cylinder, a first connecting rod and a second connecting rod; the rodless cylinder is fixedly arranged on a linear slide; one end of the first connecting rod is rotatably connected to a movable slider of the rodless cylinder, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod forms a circumferential driving limit fit with one end of the rotating shaft; when the movable slider of the rodless cylinder slides, the rotating shaft is driven to rotate through the first connecting rod and the second connecting rod, and the rotating flap is driven to flip up and down as the rotating shaft rotates.

[0015] Furthermore, an upper buffer cylinder and a lower buffer cylinder are also provided on one side of the driving assembly of the above-mentioned linear slide; the working pressure of the rodless cylinder is greater than the working pressure of the upper buffer cylinder and the lower buffer cylinder; when the second connecting rod drives the rotating flap on the rotating shaft to flip downward, the second connecting rod collides with the telescopic end of the upper buffer cylinder to overcome the working pressure of the upper buffer cylinder and continue to drive the rotating flap to flip downward until the rotating flap reaches the downward flipping limit position; when the second connecting rod drives the rotating flap on the rotating shaft to flip upward, the second connecting rod collides with the telescopic end of the lower buffer cylinder to overcome the working pressure of the lower buffer cylinder and continue to drive the rotating flap to flip upward until the rotating flap reaches the upward flipping limit position.

[0016] Furthermore, the above-mentioned point center mechanism also includes a locking assembly for locking the rotating shaft; the locking assembly includes a locked part fixedly arranged on the rotating shaft, and a locking member that can cooperate with the locked part to form locking and disengagement under the drive of a fourth driving device; the fourth driving device is a cylinder or a pushing cylinder.

[0017] Further, the locked portion is a first end toothed disc; the locking member is a second end toothed disc; the first end toothed disc and the second end toothed disc cooperate to lock the rotating shaft; The fourth driving device is a cylinder; the cylinder is fixedly mounted on a linear slide; the first-end toothed disc is fixedly connected to the end of the rotating shaft that is not connected to the driving assembly, and is coaxially arranged with the rotating shaft; the second-end toothed disc is fixedly arranged on the telescopic shaft of the cylinder; when the rotating flap is flipped to the upper flip limit position or the lower flip limit position, the first-end toothed disc can engage and lock with the second-end toothed disc; the second-end toothed disc is used to engage and lock with the first-end toothed disc under the drive of the cylinder.

[0018] The present invention has positive effects: (1) The present invention realizes high automation of the conductive nozzle punching process through the coordination between the feeding mechanism, the spindle clamping mechanism, the punching mechanism, the point center mechanism and the unloading mechanism. At the same time, the present invention simplifies the operation process compared with the existing equipment, so that the mechanism is streamlined and the operation stability is greatly improved. In addition, when punching, the punching device only performs linear reciprocating motion, so the punching accuracy is higher; and the point center of the point center mechanism can further improve the punching center degree and punching quality; (2) In the present invention, the center point mechanism and the punching mechanism are both arranged on a linear slide, so the point center and the punching mechanism have a higher degree of coordination, which is more conducive to improving the punching quality.

[0019] (3) The material loading and blanking methods of the present invention adopt a one-end-in-one-end-out method, and the entire loading and blanking process is completed in one go, greatly improving the punching efficiency.

[0020] (4) The feeding mechanism of the present invention not only has the function of receiving the materials, but also participates in the positioning of the bar material at the processing end and the sensing of material shortage, and drives the annular proximity sensing switch to participate in the sensing of whether the drill bit is broken, thereby ensuring the effective operation of the entire equipment.

[0021] (5) The present invention can provide buffer damping for the rotating flap of the point center mechanism when it flips up and down through the upper buffer cylinder and the lower buffer cylinder, thereby effectively reducing the working vibration of the point center mechanism and ensuring the long-term accuracy and working stability of the point center mechanism.

[0022] (6) The present invention can lock the rotating shaft through the locking assembly, so that when the center drill bit and the drill bit are on the same axis, they can be effectively locked, further ensuring that the point center and the drilling are carried out on the same axis, further improving the accuracy of the drilling.

[0023] (7) The locking assembly of the present invention can further improve the indexing accuracy by directly cooperating with the first end gear disc and the second end gear disc, thereby ensuring not only the stability of the point center mechanism but also the position accuracy of the point center mechanism each time it is in a processing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a top view schematic diagram of the present invention after the external shell is hidden; Figure 3 It is a structural schematic diagram of the feeding mechanism in the present invention; Figure 4 It is a structural schematic diagram of the loading tray assembly in the present invention; Figure 5 It is a structural schematic diagram of the push rod group in the present invention; Figure 6 It is a schematic diagram of the cooperation between the feeding mechanism and the spindle clamping mechanism in the present invention; Figure 7 It is a structural schematic diagram of the material unloading mechanism in the present invention being located on one side of the pneumatic chuck; Figure 8 It is a structural schematic diagram of the feeding mechanism in the present invention being located on one side of the punching mechanism; Fig. 9 It is a structural schematic diagram of the punching mechanism and the point center mechanism in the present invention; Fig.10 It is a schematic diagram of the assembly of the fourth driving device, the upper buffer cylinder and the lower buffer cylinder in the present invention; Fig.11 It is a working schematic diagram of the midpoint center mechanism of the present invention; Fig.12 It is a schematic diagram of the structure of the locking component in the present invention. DETAILED DESCRIPTION

[0025] (Example 1) See Figures 1 to 12The conductive nozzle punching device of the present invention comprises a frame 1; the frame 1 is provided with a feeding mechanism 2, three spindle clamping mechanisms 3 for clamping the bar material and driving the bar material to rotate, and a punching mechanism 4; the spindle clamping mechanism 3 comprises a rotating spindle 31 that can be driven to rotate and a pneumatic chuck 32 that is fixedly arranged on the rotating spindle 31 and can be rotated under the drive of the rotating spindle 31; the feeding mechanism 2 is used to convey the bar material to each pneumatic chuck 32; one end of the pneumatic chuck 32 for clamping the bar material is the processing end; the punching mechanism 4 comprises three A punching device 42 is fixedly arranged on a linear slide 41 for simultaneously punching holes in the bars at the processing ends of each pneumatic chuck 32; the linear slide 41 performs linear reciprocating sliding along the axial direction of the rotating spindle 31; the frame 1 is also provided with a point center mechanism 5 and a material discharge mechanism 6; the point center mechanism 5 is arranged on the linear slide 41, and is used to simultaneously point the center of the three bars on the pneumatic chuck 32; the material discharge mechanism 6 includes a slide assembly 61, a positioning assembly 62, a material pusher assembly 63, a material receiving trough 64 and a material discharge channel 65; the slide The assembly 61 includes a slide rail assembly 611 fixedly mounted on the frame 1, and a mounting frame 612 slidably mounted on the slide rail assembly 611 and driven by a first driving device to slide; the mounting frame 612 slides close to or away from the processing end of the pneumatic chuck 32 under the drive of the first driving device; the positioning assembly 62, the material pushing assembly 63 and the material receiving trough 64 are all mounted on the mounting frame 612; the positioning assembly 62 includes a positioning plate 621 driven by a second driving device for positioning the bar material at the processing end of each pneumatic chuck 32; The pushing assembly 63 includes a pushing plate 631 which slides in the receiving trough 64 under the drive of a third driving device and is used to push the workpiece in the receiving trough 64 to the unloading channel 65; the receiving trough 64 is used to receive the processed workpiece dropped from the processing end of the pneumatic chuck 32; a drop port is provided at one end of the receiving trough 64, and when the mounting frame 612 is at a position away from the processing end of the pneumatic chuck 32, the drop port is connected and communicated with the unloading channel 65; the loading mechanism 2 pushes the processed workpiece at the processing end of the pneumatic chuck 32 down while conveying the bar material.

[0026] The pneumatic chuck 32 is a pneumatic chuck 32 with a through hole; the rotating spindle 31 is provided with a feeding channel that is connected to the through hole of the pneumatic chuck 32 and forms a feeding channel for the rod to pass through; one end of the feeding channel is the processing end of the pneumatic chuck 32, and the other end is the feeding end for the rod to enter; the loading mechanism 2 includes a vibration plate 21, a conveying pipe 22, a first linear module 23, a loading plate assembly 24, a second linear module 25, a push rod assembly 26 and a positioning cylinder 27; one end of the conveying pipe 22 is connected to the discharge port of the vibration plate 21, and the other end of the conveying pipe 22 is fixedly connected to the frame 1; the first linear module 23 is installed on the frame 1; the loading plate assembly 24 includes a material plate 241, a material plate 24 1 is provided with three charging holes 242 corresponding to the feeding ends of each feeding channel; each charging hole 242 on the material tray 241 is provided with a first locking device 243 that can lock the rod inside; wherein the discharge port of the conveying pipe 22 is provided with a second locking device for locking the rod at the discharge port of the conveying pipe; the first locking device 243 and the second locking device are both small cylinders, the small cylinder on the charging hole 242 is fixedly set on the material tray 241, the telescopic end of the small cylinder extends into the charging hole 242, and can directly act on the rod in the charging hole 242, and is used to fix the rod to prevent the rod from falling from the charging hole 242 when the material tray 241 moves under the load of the rod. The small cylinder at the outlet of the conveying pipe 22 is fixedly set at the discharge port of the conveying pipe 22, and the telescopic end of the small cylinder extends into the conveying pipe 22, and is used to lock the rod at the outlet of the conveying pipe.

[0027] The material tray 241 is fixedly connected to the slider of the first linear module 23; the material tray 241 is used for each loading through hole 242 to be connected with the discharge port of the conveying pipe 22 in sequence under the drive of the first linear module 23, and each loading through hole 242 is used for one-to-one correspondence with the feeding end of each feeding channel; the positioning cylinder 27 is arranged opposite to the discharge port of the conveying pipe 22, and a channel for the material tray 241 to slide is formed between the positioning cylinder 27 and the discharge port of the conveying pipe 22; the free end of the telescopic rod of the positioning cylinder 27 is provided with a sensor, and due to the extension of the free end of the telescopic rod The rod 242 is inserted into the loading hole 242, which is only used to prevent the rod from falling from the other end of the loading hole 242. The force of the rod entering the loading channel 242 is not large, so it is most appropriate to set a sensor at the free end of the telescopic rod, that is, it can be used to sense whether there is material in the loading hole 242, and can also play a positioning role; when the loading hole 242 is connected to the discharge port of the conveying pipe 22, the telescopic rod of the positioning cylinder 27 moves toward the loading hole 242, and senses whether there is a rod in the loading hole 242 through the sensor, and at the same time limits the rod in the loading hole 242; The push rod group 26 includes three push rods 261 corresponding to the feed ends of the feeding channels, and each push rod 261 is opposite to the feed end of each feeding channel; each push rod 261 is slidably set on the frame 1; each push rod 261 is fixedly connected to the mounting plate 262; the mounting plate 262 is fixedly connected to the slider of the second linear module 25; when the material tray 241 moves to the feed end of each feeding channel, each push rod 261 is driven by the second linear module 25 to push the rods in each loading through hole 242 on the material tray 241 to the processing end of each pneumatic chuck 32.

[0028] A push rod group is slidably provided on the mounting frame 612; one end of the push rod group is fixedly connected to the driving end of the second driving device fixedly connected to the mounting frame 612, and the other end of the push rod group is fixedly connected to the positioning plate 621; the push rod group slides when driven by the second driving device, and drives the positioning plate 621 to move; the positioning plate 621 moves toward the processing end of the pneumatic chuck 32 when driven by the second driving device, and is used to limit the protrusion of the rod material at the processing end of each pneumatic chuck 32; the material receiving trough 64 is located below the positioning plate 621.

[0029] The positioning plate 621 is provided with three sensing heads 622 corresponding to the processing ends of the pneumatic chucks 32 ; the sensing heads 622 are used to sense whether there is a bar material at the processing end of the pneumatic chuck 32 .

[0030] The punching device 42 includes a drill spindle that can rotate and clamp the drill bit 421 under the drive of a driving motor; three annular proximity sensing switches 66 corresponding to the drill bits 421 are provided on the mounting frame 612; when the mounting frame 612 is located at the processing end of the pneumatic chuck 32, the sensing holes of each annular proximity sensing switch 66 correspond to each drill bit 421 one by one; each annular proximity sensing switch 66 is used to sense whether the drill bit 421 is broken when the drill bit of each punching device 42 enters the corresponding sensing hole as the linear slide 41 moves.

[0031] The specific installation method of the positioning component 62, the material pushing component 63, the material receiving trough 64, the sensor head 622 and the annular proximity sensor switch 66 is as follows: Two slide rails are fixedly provided on the frame 1 to form a slide rail group 611; the two slide rails are symmetrically arranged on both sides of the three spindle clamping mechanisms 3 and are located at the processing end of the pneumatic chuck 32; the two slide rails are arranged vertically; the mounting frame 612 is a plate body, and its two ends are fixedly connected to the sliders on the two slide rails respectively; a first driving device for driving the mounting frame 612 is fixedly provided on the frame 1, and the first driving device adopts a cylinder; at this time, the mounting frame 612 can be driven by the first driving device to slide vertically up and down between the processing end of the pneumatic chuck 32 and the punching mechanism 4; when the mounting frame 612 moves to the lowermost end, the related actions of receiving materials and positioning rods can be performed; when the mounting frame 612 moves to the uppermost end, the related actions of dropping the workpiece in the receiving trough 64 can be performed; The positioning plate 621 and the material receiving trough 64 are both arranged on the side of the mounting frame 612 close to the pneumatic chuck 32; wherein the positioning plate 621 is located above the material receiving trough 64; the annular proximity sensing switch 66 is arranged on the side of the mounting frame 612 close to the punching mechanism 4; when the mounting frame 612 moves to the lowermost end, the linear slide 41 drives the punching mechanism 4 to move forward a little, so that the drill bit 421 enters the sensing hole of the annular proximity sensing switch 66 according to the set distance, so that the annular proximity sensing switch can determine whether the drill bit 421 is broken, and while determining whether the drill bit 421 is broken, the material receiving trough 64 and / or the positioning plate 621 are simultaneously involved in the work, which greatly improves the overall operating efficiency, thereby improving the punching efficiency.

[0032] The punching device 42 includes a drill spindle that can rotate and clamp a drill bit 421 under the drive of a driving motor; the point center mechanism 5 includes a rotating flap 51, a center drill bit 52, a rotating shaft 53 and a driving component 54 for driving the rotating shaft 53 to rotate up and down; the rotating shaft 53 is rotatably set on the linear slide 41, and the rotating flap 51 is fixedly set on the rotating shaft 53; a center drill bit 52 for point center is fixedly set on the rotating flap 51; the number of center drill bits 52 is consistent with the number of drill bits 421, and the center drill bits 52 correspond to the drill bits 421 one by one; when the rotating flap 51 is in the downward flip state, the center drill bit 52 is located in front of the drill bit 421, and the center drill bit 52 and the corresponding drill bit 421 are on the same axis.

[0033] The driving assembly 54 includes a rodless cylinder 541, a first connecting rod 542 and a second connecting rod 543; the rodless cylinder 541 is fixedly arranged on the linear slide 41; one end of the first connecting rod 542 is rotatably connected to the movable slider 541-1 of the rodless cylinder 541, and the other end of the first connecting rod 542 is rotatably connected to one end of the second connecting rod 543, and the other end of the second connecting rod 543 forms a circumferential drive limit fit with one end of the rotating shaft 53, that is, the second connecting rod 543 can push the rotating shaft 53 to rotate; wherein the circumferential limit fit between the second connecting rod 543 and the rotating shaft 53 is as follows: a first keyway is provided at one end of the rotating shaft 53; the other end of the second connecting rod 543 is provided with a ring body for being mounted on the rotating shaft 53, and a second keyway is provided on the inner wall of the ring body; when the second connecting rod 543 is mounted on the rotating shaft 53, the first keyway and the second keyway cooperate and a key is embedded between the two, thereby realizing that the other end of the second connecting rod 543 forms a circumferential drive limit fit with one end of the rotating shaft 53.

[0034] When the movable slider 541-1 of the rodless cylinder 541 slides, the connecting rod mechanism composed of the first connecting rod 542 and the second connecting rod 543 will perform a compensatory drive, that is, the rotating shaft 53 is driven to rotate by the first connecting rod 542 and the second connecting rod 543, and the rotating flap 51 is driven to flip up and down as the rotating shaft 53 rotates.

[0035] An upper buffer cylinder 55 and a lower buffer cylinder 56 are also provided on one side of the linear slide 41 located at the driving component 54; the working pressure of the rodless cylinder 541 is greater than the working pressure of the upper buffer cylinder 55 and the lower buffer cylinder 56; when the second connecting rod 543 drives the rotating flap 51 on the rotating shaft 53 to flip downward, the second connecting rod 543 collides with the telescopic end of the upper buffer cylinder 55 to overcome the working pressure of the upper buffer cylinder 55 and continue to drive the rotating flap 51 to flip downward until the rotating flap 51 reaches the downward flipping limit position; when the second connecting rod 543 drives the rotating flap 51 on the rotating shaft 53 to flip upward, the second connecting rod 543 collides with the telescopic end of the lower buffer cylinder 56 to overcome the working pressure of the lower buffer cylinder 56 and continue to drive the rotating flap 51 to flip upward until the rotating flap 51 reaches the upward flipping limit position.

[0036] According to the design, the upward sliding limit position of the movable slider 541-1 of the rodless cylinder 541 can also be set to the downward flipping limit position of the rotating flap 51, and the downward sliding limit position of the movable slider 541-1 of the rodless cylinder 541 can be set to the upward flipping limit position of the rotating flap 51.

[0037] The point center mechanism 5 also includes a locking assembly 57 for locking the rotating shaft 53; the locking assembly 57 includes a locked portion fixedly arranged on the rotating shaft 53, and a locking member that can cooperate with the locked portion to form locking and disengagement under the drive of a fourth driving device 571; the fourth driving device 571 is a cylinder, and of course an oil cylinder can also be used.

[0038] The locked portion is the first end toothed disc 572; the locking member is the second end toothed disc 573; the first end toothed disc 572 and the second end toothed disc 573 cooperate to lock the rotating shaft 53; The cylinder serving as the fourth driving device 571 is fixedly arranged on the linear slide; the first-end toothed disc 572 is fixedly connected to the end of the rotating shaft 53 that is not connected to the second connecting rod 543, and is coaxially arranged with the rotating shaft 53; the second-end toothed disc 573 is fixedly arranged on the telescopic shaft of the cylinder; when the rotating flap 51 is flipped to the upper flip limit position or the lower flip limit position, the first-end toothed disc 572 can be engaged and locked with the second-end toothed disc 573; the second-end toothed disc 573 is used to engage and lock or disengage and unlock with the first-end toothed disc 572 under the drive of the cylinder.

[0039] The working process of the present invention for conducting nozzle punching is as follows: Loading preparation: the vibrating plate 21 conveys the bar material into the conveying pipe 22, and the second locking device at the outlet of the conveying pipe 22 locks the bar material to be discharged; the material tray 241 moves toward the conveying pipe 22 driven by the first linear module 23, and the three loading holes 242 on the material tray 241 are connected with the conveying pipe 22 in sequence; in each connection, the free end of the positioning cylinder 27 is first extended into the loading hole 242 that is connected with the conveying pipe 22 at this time, and then the first locking device 243 on the loading hole 242 is unlocked to allow the bar material to enter the loading hole 242; the second locking device on the conveying pipe 22 is unlocked, As the conveying tube 22 enters the loading hole 242 under the thrust of the subsequent rods; when the sensor on the free end of the positioning cylinder 27 senses that there are rods in the loading hole 242, the first locking device 243 locks the rods in the loading hole 242, and the second locking device also locks the rods in the conveying tube 22; in this way, the three loading holes 242 are filled with rods; then the material tray 241 is moved to the feeding end of the feeding channel under the drive of the first linear module 23, and the three loading holes 242 correspond to the three feeding channels one by one, waiting for the pushing rod group 26 to load the materials.

[0040] Loading: The push rod 261 of the push rod group 26 pushes the bar materials in the three loading holes 242 of the material tray 241 into the rotating spindle 31 (the second locking device is in the unlocked state at this time), and pushes it toward the processing end of the pneumatic chuck 32; the mounting frame 612 moves to the lowermost end driven by the first driving device, and the receiving trough 64 is in a state of waiting for receiving materials; as the push rod 261 pushes the bar materials to the processing end, if there is a processed workpiece on the pneumatic chuck 32, the workpiece will be pushed off and fall into the receiving trough 64; then the positioning plate 621 moves toward the pneumatic chuck 32 driven by the second driving device, and the bar materials to be processed extend out of the pneumatic chuck 32 and are positioned by the positioning plate 621, and then the push rod 261 withdraws from the rotating spindle 31, and the pneumatic chuck 32 clamps the bar materials to be processed to complete the loading. During this process, the induction head 622 on the positioning plate 621 will sense whether there is a bar in the pneumatic chuck 32, and will alarm if there is no bar. The induction principle of the induction head 622 is to use the existing induction principle of the induction head. When the bar contacts the induction head 622 on the positioning plate 621, an electrical signal will be generated. If there is an electrical signal, there is a bar.

[0041] The first linear module 23 and the second linear module 25 are both tandem linear modules, and their driving methods are well-known technologies and are commonly used in automation equipment, so their structures and working principles are not described in detail here.

[0042] Next, the mounting frame 612 is driven upward to the uppermost end by the first driving device, at which time the material outlet of the receiving trough 64 is connected with the material discharge channel 65; then, the pushing plate 631 of the pushing assembly 63 is driven by the third driving device to sweep the workpiece in the receiving trough 64 from the receiving trough 64 to the material discharge channel 65, and the workpiece slides along the material discharge channel 65 to a predetermined position (this position generally has a turnover box for accommodating the workpiece); after the mounting frame 612 moves upward and performs the above-mentioned subsequent actions, the rodless cylinder 541 drives the rotating shaft 53 to rotate, and the rotating shaft 53 drives the rotating flap 51 to flip down to the downward flip limit position, at which time the center drill bit 52 on the rotating flap 51 and the drill bit 421 are on the same axis.

[0043] Next, the cylinder (ie, the fourth driving device 571 ) drives the second end gear plate 573 to engage with the first end gear plate 572 on the rotating shaft 53 to achieve locking.

[0044] The rotating flap 51 is buffered by the upper buffer cylinder 55 and the lower buffer cylinder 56 during the process of flipping up or down, and the whole process has high stability and small vibration.

[0045] The linear slide 41 moves linearly, and the rotating spindle 31 rotates to drive the rod to be processed to rotate, and the center drill 52 contacts the punching surface of the rod. As the rod rotates, the center drill 52 processes a center hole on the punching surface of the workpiece.

[0046] Next, the linear slide 41 moves backward relative to the pneumatic chuck 32, the cylinder drives the second end gear disc 573 to disengage from the first end gear disc 572, and then the rodless cylinder 541 drives the rotating flap 51 to flip up.

[0047] Next, the linear slide 41 moves toward the pneumatic chuck 32 again, allowing the drill 421 to perform drilling based on the center hole on the workpiece, thereby completing the drilling.

[0048] After the punching is completed, the linear slide 41 moves back to its original position away from the pneumatic chuck 32 .

[0049] When the equipment is drilling, the feeding mechanism 2 is preparing for feeding, and it reciprocates.

[0050] (Example 2) In the present invention, the second end toothed disc 573 is fixedly arranged on a slide seat, which is slidably arranged on the linear slide 41 through a slide rail, and the slide seat is fixedly connected to the telescopic end of the cylinder as the fourth driving device 571. Such a design can ensure the stability of the second end toothed disc 573.

[0051] Other technical features are the same as those of Example 1.

[0052] (Example 3) The locking assembly 55 of the present invention includes a locked portion fixedly arranged on the rotating shaft 53, and a locking member that can be locked and disengaged with the locked portion under the drive of the driving device 551. The locked portion is an upper slot and a lower slot, and the locking member is a pin. When the rotating flap 51 is located at the upper flip limit position, the pin is correspondingly matched with the upper slot for locking; when the rotating flap 51 is located at the lower flip limit position, the pin is correspondingly matched with the favorite slot for locking.

[0053] Other technical features are the same as those of Example 1.

[0054] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conductive nozzle punching device, comprising a frame; the frame is provided with a feeding mechanism, a plurality of spindle clamping mechanisms and a punching mechanism for clamping rods and driving the rods to rotate; the spindle clamping mechanism comprises a rotating spindle that can be driven to rotate and a pneumatic chuck fixedly arranged on the rotating spindle and can be rotated under the drive of the rotating spindle; the feeding mechanism is used to convey the rods to each pneumatic chuck; one end of the pneumatic chuck clamping the rods is the processing end; the punching mechanism comprises a plurality of punching devices fixedly arranged on a linear slide for simultaneously punching the rods at the processing ends of each pneumatic chuck; the linear slide performs linear reciprocating sliding along the axial direction of the rotating spindle; it is characterized in that: The frame is also provided with a point center mechanism and a material discharge mechanism; the point center mechanism is arranged on a linear slide and is used to simultaneously point the center of multiple bars on the pneumatic chuck; the material discharge mechanism includes a slide assembly, a positioning assembly, a material pusher assembly, a material receiving trough and a material discharge channel; the slide assembly includes a slide rail assembly fixedly arranged on the frame, and a mounting frame slidably arranged on the slide rail assembly and sliding under the drive of the first driving device; the mounting frame slides close to or away from the processing end of the pneumatic chuck under the drive of the first driving device; the positioning assembly, the material pusher assembly and the material receiving trough are all installed on the mounting frame; The positioning assembly includes a positioning plate driven by a second drive device for positioning the bar material at the processing end of each pneumatic chuck; the pushing assembly includes a pushing plate driven by a third drive device and sliding in a receiving trough and used to push the workpiece in the receiving trough to a discharge channel; the receiving trough is used to receive the completed workpiece dropped from the processing end of the pneumatic chuck; a drop port is provided at one end of the receiving trough, and when the mounting frame is at a position away from the processing end of the pneumatic chuck, the drop port is connected and communicated with the discharge channel; the loading mechanism pushes down the completed workpiece at the processing end of the pneumatic chuck while conveying the bar material.

2. The conductive nozzle punching device according to claim 1, characterized in that: The pneumatic chuck is a pneumatic chuck with a through hole; a feeding channel connected to the through hole of the pneumatic chuck and formed for the rod to pass through is provided on the rotating spindle; one end of the feeding channel is the processing end of the pneumatic chuck, and the other end is the feeding end for the rod to enter; the loading mechanism includes a vibration plate, a conveying pipe, a first linear module, a loading plate assembly, a second linear module, a push rod assembly and a positioning cylinder; one end of the conveying pipe is connected to the discharge port of the vibration plate, and the other end of the conveying pipe is fixedly connected to the frame; the first linear module is installed on the frame; the loading plate assembly includes a material plate, and a plurality of loading through holes corresponding to the feeding ends of each feeding channel are provided on the material plate; each loading through hole on the material plate is provided with a first locking device that can lock the rod inside; A second locking device for locking the rods at the discharge port of the conveying pipe is provided at the discharge port of the conveying pipe; the material tray is fixedly connected to the slider of the first linear module; the material tray is driven by the first linear module to connect and communicate with the discharge port of the conveying pipe in turn for each loading through hole, and to correspond one-to-one with the feeding end of each feeding channel for each loading through hole; the positioning cylinder is arranged opposite to the discharge port of the conveying pipe, and a channel for the material tray to slide is formed between the positioning cylinder and the discharge port of the conveying pipe; a sensor is provided at the free end of the telescopic rod of the positioning cylinder; when the loading through hole is connected to the discharge port of the conveying pipe, the telescopic rod of the positioning cylinder moves toward the loading through hole, and senses whether there is a rod in the loading through hole through the sensor, and at the same time limits the position of the rod in the loading through hole; The push rod group includes multiple push rods corresponding to the feed ends of the feeding channels, and each push rod is opposite to the feed end of each feeding channel; each push rod is slidably arranged on the frame; each push rod is fixedly connected to the mounting plate; the mounting plate is fixedly connected to the slider of the second linear module; when the material tray moves to the feed end of each feeding channel, each push rod is driven by the second linear module to push the rods in each loading through hole on the material tray to the processing end of each pneumatic chuck.

3. The conductive nozzle punching device according to claim 1 or 2, characterized in that: A push rod group is slidably provided on the mounting frame; one end of the push rod group is fixedly connected to the driving end of the second driving device fixedly connected to the mounting frame, and the other end of the push rod group is fixedly connected to the positioning plate; the push rod group slides when driven by the second driving device, and drives the positioning plate to move; the positioning plate moves toward the processing end of the pneumatic chuck when driven by the second driving device, and is used to limit the protrusion of the rod material at the processing end of each pneumatic chuck; the material receiving trough is located below the positioning plate.

4. The conductive nozzle punching device according to claim 3, characterized in that: The positioning plate is provided with a plurality of sensing heads corresponding to the processing ends of the pneumatic chucks one by one; the sensing heads are used to sense whether there is a bar material at the processing end of the pneumatic chuck.

5. The conductive nozzle punching device according to claim 1, characterized in that: The punching device includes a drill spindle that can be rotated and clamped with a drill bit under the drive of a driving motor; a plurality of annular proximity sensing switches corresponding to the drill bits are provided on the mounting frame; when the mounting frame is located at the processing end of the pneumatic chuck, the sensing holes of each annular proximity sensing switch correspond to each drill bit one by one; each annular proximity sensing switch is used to sense whether the drill bit is broken when the drill bit of each punching device enters the corresponding sensing hole as the linear slide moves.

6. The conductive nozzle punching device according to claim 1, characterized in that: The punching device includes a drill spindle that can rotate and clamp a drill bit under the drive of a driving motor; the point center mechanism includes a rotating flap, a center drill bit, a rotating shaft and a driving component for driving the rotating shaft to rotate up and down; the rotating shaft is rotatably set on a linear slide, and the rotating flap is fixedly set on the rotating shaft; a center drill bit for point center is fixedly set on the rotating flap; the number of center drill bits is consistent with the number of drill bits, and the center drill bits correspond to the drill bits one by one; when the rotating flap is in the downward flip state, the center drill bit is located in front of the drill bit, and the center drill bit and the corresponding drill bit are on the same axis.

7. The conductive nozzle punching device according to claim 6, characterized in that: The driving assembly includes a rodless cylinder, a first connecting rod and a second connecting rod; the rodless cylinder is fixedly arranged on a linear slide; one end of the first connecting rod is rotatably connected to a moving slider of the rodless cylinder, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod forms a circumferential driving limit fit with one end of the rotating shaft; when the moving slider of the rodless cylinder slides, the rotating shaft is driven to rotate through the first connecting rod and the second connecting rod, and the rotating flap is driven to flip up and down as the rotating shaft rotates.

8. The conductive nozzle punching device according to claim 7, characterized in that: An upper buffer cylinder and a lower buffer cylinder are also provided on one side of the linear slide located at the driving assembly; the working pressure of the rodless cylinder is greater than the working pressure of the upper buffer cylinder and the lower buffer cylinder; when the second connecting rod drives the rotating flap on the rotating shaft to flip downward, the second connecting rod collides with the telescopic end of the upper buffer cylinder to overcome the working pressure of the upper buffer cylinder and continue to drive the rotating flap to flip downward until the rotating flap reaches the downward flipping limit position; when the second connecting rod drives the rotating flap on the rotating shaft to flip upward, the second connecting rod collides with the telescopic end of the lower buffer cylinder to overcome the working pressure of the lower buffer cylinder and continue to drive the rotating flap to flip upward until the rotating flap reaches the upward flipping limit position.

9. The conductive nozzle punching device according to claim 6, 7 or 8, characterized in that: The point center mechanism also includes a locking assembly for locking the rotating shaft; the locking assembly includes a locked part fixedly arranged on the rotating shaft, and a locking member that can cooperate with the locked part to form locking and disengagement under the drive of a fourth driving device; the fourth driving device is a cylinder or a pushing cylinder.

10. The conductive tip punching device according to claim 9, characterized in that: The locked part is a first end toothed disc; the locking member is a second end toothed disc; the first end toothed disc and the second end toothed disc cooperate to lock the rotating shaft; The fourth driving device is a cylinder; the cylinder is fixedly mounted on a linear slide; the first-end toothed disc is fixedly connected to the end of the rotating shaft that is not connected to the driving assembly, and is coaxially arranged with the rotating shaft; the second-end toothed disc is fixedly arranged on the telescopic shaft of the cylinder; when the rotating flap is flipped to the upper flip limit position or the lower flip limit position, the first-end toothed disc can engage and lock with the second-end toothed disc; the second-end toothed disc is used to engage and lock with the first-end toothed disc under the drive of the cylinder.

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