Contact tube punching equipment

Abstract

The utility model relates to contact tube punching equipment, which relates to the field of contact tube processing equipment and comprises a frame. 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 utility model relates to the field of conductive nozzle processing equipment, in particular to conductive nozzle punching equipment. Background Art

[0002] The contact tip is a consumable part of welding equipment and is considered a welding consumable. The metal tip at the end of the welding gun, which guides the welding wire, is the contact tip. Contact tips are typically made of copper (such as chromium-zirconium copper and red copper). During contact tip processing, a hole is drilled into the workpiece bar. To ensure accurate drilling, the bar is typically centered. This precise positioning of the center drill bit during hole drilling facilitates later drilling guidance and reduces errors.

[0003] Therefore, to complete the hole processing of the contact tip, it is often necessary to first center the bar stock; then, the centered bar stock must be clamped to the punching equipment for punching. This operation not only affects processing efficiency, but also, because centering and punching are not performed on the same machine, and the bar stock is transferred, it is easy to cause processing errors during processing, resulting in uneven punching quality of the contact tip.

[0004] To address this issue, researchers considered integrating the point centering and punching functions into a single device, thereby reducing workpiece transfer. This led to the development of a device that combines both point centering and punching functions. This device is configured by placing the point centering and punching devices on an XY-axis servo slide, with the two devices aligned along the Y-axis. The device operates as follows: the XY-axis servo slide first moves in the Y direction, then moves the point centering device to the processing position. The XY-axis servo slide then moves in the X direction to perform point centering. After centering, the XY-axis servo slide returns to its X-direction position, then moves in the Y direction to move the punching device to the processing position. The XY-axis servo slide then 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 screw in the initial stage. The movement accuracy cannot meet the accuracy requirements when punching the conductive nozzle. Therefore, in actual use, the punching accuracy still needs to be improved.

[0006] At the same time, the loading mechanism of existing contact nozzle punching equipment is also relatively complex (see patent CN204546094U), which generally loads the material directly at the processing end of the pneumatic chuck. This design makes the connection between loading and unloading actions easily affect loading efficiency. Utility Model Content

[0007] The utility model aims to provide a conductive nozzle punching device with high punching efficiency, high punching center degree and high punching quality.

[0008] The technical solution for achieving the purpose of the utility model is: the conductive nozzle punching equipment in the utility model includes a frame; the frame is provided with a loading mechanism, a plurality of spindle clamping mechanisms and a punching mechanism for clamping rods and driving the rods to rotate; the spindle clamping mechanism includes 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 loading 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 includes 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 a linear reciprocating slide along the axial direction of the rotating spindle; the frame is also provided with a point center mechanism and a blanking mechanism; 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 blanking mechanism includes a slide assembly, a positioning assembly, and a pushing assembly , a material receiving trough and a material discharge channel; the slide assembly includes a slide rail group fixedly mounted on the frame, and a mounting frame slidably arranged on the slide rail group and sliding under the drive of the first drive device; the mounting frame slides close to or away from the processing end of the pneumatic chuck under the drive of the first drive device; the positioning assembly, the pushing assembly and the material receiving trough are all installed on the mounting frame; the positioning assembly includes a positioning plate for positioning the bar material at the processing end of each pneumatic chuck driven by the second drive device; the pushing assembly includes a pushing plate that slides in the material receiving trough under the drive of the third drive device and is used to push the workpiece in the material receiving trough to the material discharge channel; the material receiving trough is used to receive the processed workpiece that falls from the processing end of the pneumatic chuck; a material drop port is provided at one end of the material receiving trough, and when the mounting frame is in a position away from the processing end of the pneumatic chuck, the material drop port is connected and communicated with the material discharge channel; the loading mechanism pushes down the processed workpiece at the processing end of the pneumatic chuck while conveying the bar material.

[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 vibrating plate, a conveying pipe, a first linear module, a loading plate assembly, a second linear module, a pushing rod group and a positioning cylinder; one end of the conveying pipe is connected to the discharge port of the vibrating 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 and a control panel is installed to check whether the loading position of the loading material is correct or not; a second locking device is provided at the discharge port of the conveying pipe for locking the rod material 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 used to connect the loading through holes with the discharge port of the conveying pipe in sequence under the drive of the first linear module, 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 charging through hole is connected to the discharge port of the conveying pipe, the telescopic rod of the positioning cylinder moves toward the charging through hole, and senses whether there is a rod material in the charging through hole through the sensor, and at the same time limits the rod material in the charging through hole;

[0010] 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 set 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.

[0011] 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 under the drive of the second driving device, and drives the positioning plate to move; the positioning plate moves toward the processing end of the pneumatic chuck under the drive of 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.

[0012] 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.

[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 mounting bracket is provided with a plurality of annular proximity sensing switches corresponding one to one with the drill bits; when the mounting bracket is located at the processing end of the pneumatic chuck, the sensing holes of each annular proximity sensing switch correspond one to one with each drill bit; 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.

[0014] 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 fixed 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 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.

[0015] 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 the 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 drive 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 by 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.

[0016] Furthermore, an upper buffer cylinder and a lower buffer cylinder are 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 flip 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 flip limit position.

[0017] 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 drive device; the fourth drive device is a cylinder or a pushing cylinder.

[0018] Furthermore, the locked portion is the first end toothed disc; the locking member is the second end toothed disc; the first end toothed disc and the second end toothed disc cooperate to lock the rotating shaft;

[0019] The fourth driving device is a cylinder; the cylinder is fixedly arranged on the linear slide; the first end gear disc is fixedly connected to the end of the rotating shaft that is not connected to the driving component, and is coaxially arranged with the rotating shaft; the second end gear 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 gear disc can engage and lock with the second end gear disc; the second end gear disc is used to engage and lock with the first end gear disc under the drive of the cylinder.

[0020] The utility model has positive effects: (1) The utility model realizes high automation of the conductive nozzle punching process through the coordination among the feeding mechanism, the spindle clamping mechanism, the punching mechanism, the point center mechanism and the unloading mechanism. At the same time, the utility model simplifies the operation process compared with the existing equipment, so that the mechanism is streamlined and the operation stability is greatly improved. In addition, the punching accuracy is higher because the punching device only performs linear reciprocating motion during punching; and the point center of the point center mechanism can further improve the punching center degree and punching quality;

[0021] (2) The midpoint center mechanism and the punching mechanism of the utility model are both arranged on a linear slide, so the coordination degree between the point center and the punching is higher, which is more conducive to improving the punching quality.

[0022] (3) The loading and blanking methods in 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.

[0023] (4) The feeding mechanism in the present invention not only has the function of receiving the material, 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.

[0024] (5) The utility model 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.

[0025] (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 drilling are carried out on the same axis, further improving the accuracy of drilling.

[0026] (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 every time it is in the processing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 This is a top view of the present invention with the outer shell hidden;

[0030] Figure 3 This is a schematic structural diagram of the feeding mechanism in the present utility model;

[0031] Figure 4 This is a structural diagram of the upper material tray assembly in the utility model;

[0032] Figure 5 This is a structural diagram of the push rod group in the utility model;

[0033] Figure 6 This is a schematic diagram of the cooperation between the feeding mechanism and the spindle clamping mechanism in the present utility model;

[0034] Figure 7 This is a structural diagram of the present invention in which the feeding mechanism is located on one side of the pneumatic chuck;

[0035] Figure 8 This is a structural diagram of the present invention in which the feeding mechanism is located on one side of the punching mechanism;

[0036] Figure 9 This is a schematic diagram of the structure of the punching mechanism and the point center mechanism in the utility model;

[0037] Figure 10 This is a schematic diagram of the assembly of the fourth drive device, the upper buffer cylinder and the lower buffer cylinder in the present utility model;

[0038] Figure 11 This is a working diagram of the midpoint center mechanism of the utility model;

[0039] Figure 12 It is a structural schematic diagram of the locking component in the utility model. DETAILED DESCRIPTION

[0040] (Example 1)

[0041] 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 rotated under the drive 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 includes a rotating spindle 31 that can be rotated under the drive 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; the end of the pneumatic chuck 32 for clamping the bar material is the processing end; the punching mechanism 4 includes a rotating spindle 31 that can be rotated under the drive and the pneumatic chuck 32 ... The machine frame 1 is provided with three punching devices 42 fixedly arranged on the linear slide 41 for punching holes in the bars at the processing ends of the pneumatic chucks 32 at the same time; the linear slide 41 slides back and forth along the axis of the rotating spindle 31; the frame 1 is also provided with a point center mechanism 5 and a blanking 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 chucks 32; the blanking mechanism 6 includes a slide assembly 61, a positioning assembly 62, a pushing assembly 63, a receiving trough 64 and a blanking channel 65; the slide The frame 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 drive device to slide. The mounting frame 612 slides toward or away from the processing end of the pneumatic chuck 32 under the drive of the first drive device. The positioning assembly 62, the material pusher assembly 63, and the material receiving chute 64 are all mounted on the mounting frame 612. The positioning assembly 62 includes a positioning plate 621 driven by a second drive device for positioning the bar material at the processing end of each pneumatic chuck 32. The pushing assembly 63 includes a pushing plate 631 that 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 that falls from the processing end of the pneumatic chuck 32; one end of the receiving trough 64 is provided with a drop port, and when the mounting bracket 612 is in 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 down the processed workpiece at the processing end of the pneumatic chuck 32 while conveying the bar material.

[0042] 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 group 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 loading holes 242 corresponding to the feed ends of each feeding channel; each loading hole 242 on the material tray 241 is provided with a first locking device 243 for locking the rods therein; a second locking device is provided at the outlet of the conveying pipe 22 for locking the rods therein; both the first locking device 243 and the second locking device are small cylinders. The small cylinder on the loading hole 242 is fixedly mounted on the material tray 241, and the telescopic end of the small cylinder extends into the loading hole 242, directly acting on the rods therein, securing the rods and preventing them from falling out of the loading hole 242 when the material tray 241 moves under the load. The small cylinder at the outlet of the conveying pipe 22 is fixedly mounted at the outlet of the conveying pipe 22, and the telescopic end of the small cylinder extends into the conveying pipe 22, locking the rods therein.

[0043] The material tray 241 is fixedly connected to the slider of the first linear module 23; the material tray 241 is used to connect the charging holes 242 with the discharge port of the conveying pipe 22 in sequence under the drive of the first linear module 23, and the charging holes 242 are used to correspond to the feeding ends of the feeding channels one by one; the positioning cylinder 27 is set 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 since the free end of the telescopic rod is extended The rod 242 is inserted into the charging hole 242, which is only used to prevent the rod from falling from the other end of the charging hole 242. The force of the rod entering the charging channel 242 is not large. Therefore, 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 charging hole 242 and also play a positioning role. When the charging hole 242 is connected to the discharge port of the conveying pipe 22, the telescopic rod of the positioning cylinder 27 moves toward the charging hole 242, and senses whether there is rod in the charging hole 242 through the sensor, and at the same time limits the rod in the charging hole 242.

[0044] 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 rod material in each loading through hole 242 on the material tray 241 to the processing end of each pneumatic chuck 32.

[0045] A push rod group is slidingly 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 under the drive of 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 under the drive of the second driving device, and is used to limit the extension amount of the bar material at the processing end of each pneumatic chuck 32; the material receiving trough 64 is located below the positioning plate 621.

[0046] 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 at the processing end of the pneumatic chuck 32 .

[0047] 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 one to one with the drill bits 421 are provided on the mounting bracket 612; when the mounting bracket 612 is located at the processing end of the pneumatic chuck 32, the sensing holes of each annular proximity sensing switch 66 correspond one to one with each drill bit 421; 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.

[0048] The specific installation method of the positioning component 62, the pushing component 63, the receiving trough 64, the sensor head 622 and the annular proximity sensor switch 66 is as follows:

[0049] Two slide rails are fixed 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, and its two ends are fixedly connected to the sliders on the two slide rails; a first driving device for driving the mounting frame 612 is fixed on the frame 1, and the first driving device adopts a cylinder; at this time, the mounting frame 612 can slide vertically up and down between the processing end of the pneumatic chuck 32 and the punching mechanism 4 under the drive of the first driving device; when the mounting frame 612 moves to the lowermost end, the related actions of material receiving and bar positioning can be performed; when the mounting frame 612 moves to the uppermost end, the related actions of workpiece blanking in the material receiving trough 64 can be performed;

[0050] 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; 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.

[0051] 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 fixed 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.

[0052] 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; the circumferential limit fit between the second connecting rod 543 and the rotating shaft 53 is as follows: one end of the rotating shaft 53 is provided with a first key groove; the other end of the second connecting rod 543 is provided with a ring body for being mounted on the rotating shaft 53, and the inner wall of the ring body is provided with a second key groove; when the second connecting rod 543 is mounted on the rotating shaft 53, the first key groove and the second key groove cooperate and a key is embedded between the two, so that the other end of the second connecting rod 543 forms a circumferential drive limit fit with one end of the rotating shaft 53.

[0053] 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.

[0054] An upper buffer cylinder 55 and a lower buffer cylinder 56 are also provided on one side of the driving assembly 54 on the linear slide 41; 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 flip 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 flip limit position.

[0055] 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 flip 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 flip limit position of the rotating flap 51.

[0056] The point center mechanism 5 also includes a locking assembly 57 for locking the rotating shaft 53; the locking assembly 57 includes a locked part fixedly arranged on the rotating shaft 53, and a locking member that can cooperate with the locked part to form locking and disengagement under the drive of a fourth drive device 571; the fourth drive device 571 is a pneumatic cylinder, and of course an oil cylinder can also be used.

[0057] 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;

[0058] 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.

[0059] The working process of the utility model for conducting nozzle punching is as follows:

[0060] 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 under the drive of the first linear module 23, and the three loading holes 242 on the material tray 241 are connected to the conveying pipe 22 in turn; in each connection, the free end of the positioning cylinder 27 is first extended into the loading hole 242 that is now connected to the conveying pipe 22, 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 pipe 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 pipe 22; this method is repeated until all three loading holes 242 are filled with rods; then the material tray 241 is moved to the feed 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 material.

[0061] Loading: The push rod 261 of the push rod group 26 is driven by the second linear module 25 to push the bar material 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 is driven by the first driving device to move to the lower end, and the receiving trough 64 is in a state waiting to receive material; as the push rod 261 pushes the bar material 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 is driven by the second driving device to move toward the pneumatic chuck 32, and the bar material to be processed extends out of the pneumatic chuck 32 and is positioned by the positioning plate 621, and then the push rod 261 exits the rotating spindle 31, and the pneumatic chuck 32 clamps the bar material to be processed to complete the loading. During this process, the sensor head 622 on the positioning plate 621 senses whether there is a bar in the pneumatic chuck 32 and, if not, generates an alarm. The sensing principle of the sensor head 622 is based on the existing sensing principle of the sensor head. When the bar contacts the sensor head 622 on the positioning plate 621, an electrical signal is generated. If the electrical signal is generated, the bar is present.

[0062] 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. Therefore, their structures and working principles are not described in detail here.

[0063] Then, the mounting bracket 612 is driven upward to the uppermost end by the first driving device, at which time the blanking port of the receiving trough 64 is connected with the 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 discharge channel 65, and the workpiece slides along the discharge channel 65 to a predetermined position (this position generally has a turnover box for accommodating the workpiece); after the mounting bracket 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 limit position. At this time, the center drill bit 52 on the rotating flap 51 and the drill bit 421 are on the same axis.

[0064] Next, the cylinder (ie, the fourth driving device 571 ) drives the second end gear disc 573 to engage with the first end gear disc 572 on the rotating shaft 53 to achieve locking.

[0065] 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 is highly stable with little vibration.

[0066] The linear slide 41 moves linearly, and the rotating spindle 31 rotates to drive the bar to be processed to rotate. The center drill bit 52 contacts the punching surface of the bar, and as the bar rotates, the center drill bit 52 machines a center hole on the punching surface of the workpiece.

[0067] Next, the linear slide 41 moves backward relative to the pneumatic chuck 32 , and 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 rotary flap 51 to flip upward.

[0068] Then, the linear slide 41 moves toward the pneumatic chuck 32 again, allowing the drill bit 421 to drill a hole based on the center hole on the workpiece, thereby completing the drilling.

[0069] After the punching is completed, the linear slide 41 moves back to its original position away from the pneumatic chuck 32 .

[0070] When the equipment is punching, the feeding mechanism 2 is preparing to feed the material, and it goes back and forth.

[0071] (Example 2)

[0072] In the present invention, the second end gear disc 573 is fixedly mounted on a slide, which is slidably mounted on the linear slide 41 via a slide rail, and the slide is fixedly connected to the telescopic end of the cylinder serving as the fourth drive device 571. This design ensures the stability of the second end gear disc 573.

[0073] Other technical features are the same as those in Example 1.

[0074] (Example 3)

[0075] The locking assembly 55 of the present invention comprises a locked portion fixedly mounted on the rotating shaft 53, and a locking member that engages with the locked portion to lock and release under the action of a drive device 551. The locked portion comprises an upper slot and a lower slot, and the locking member comprises a pin. When the rotating flap 51 is in the upper limit position, the pin engages with the upper slot to lock the flap; when the rotating flap 51 is in the lower limit position, the pin engages with the lower slot to lock the flap.

[0076] Other technical features are the same as those in Example 1.

[0077] The specific embodiments described above further illustrate the purpose, 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 scope of protection of the present invention.

Claims

1. A conductive nozzle punching device, comprising a frame; the frame is provided with a loading mechanism, a plurality of spindle clamping mechanisms for clamping bar materials and driving the bar materials to rotate, and a punching mechanism; 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 when driven by the rotating spindle; the loading mechanism is used to convey the bar materials to each pneumatic chuck; the end of the pneumatic chuck for clamping the bar materials 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 bar materials at the processing ends of each pneumatic chuck; the linear slide performs linear reciprocating sliding along the axial direction of the rotating spindle; and 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 pushing assembly, a material receiving trough and a material discharge channel; the slide assembly includes a slide rail group fixedly arranged on the frame, and a mounting frame slidably arranged on the slide rail group and sliding under the drive of a 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 pushing 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 processed workpiece dropped from the processing end of the pneumatic chuck; a blanking port is provided at one end of the receiving trough, and when the mounting bracket is in a position away from the processing end of the pneumatic chuck, the blanking port is connected to the discharge channel; the loading mechanism pushes down the processed 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; 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 pushing rod group 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; A second locking device is provided at the discharge port of the conveying pipe for locking the rod material at the discharge port position 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 enable each loading through hole to be docked and communicated with the discharge port of the conveying pipe in turn, and to enable each loading through hole to correspond one-to-one with the feeding end of each feeding channel; 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 docked and communicated with 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 material in the loading through hole through the sensor, and at the same time limits the rod material 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 set 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 slidingly 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 under the drive of the second driving device and drives the positioning plate to move; the positioning plate moves toward the processing end of the pneumatic chuck under the drive of the second driving device, and is used to limit the extension amount of the bar 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 rotate and clamp a drill bit under the drive of a drive motor; the mounting frame is provided with a plurality of annular proximity sensing switches corresponding one to one with the drill bits; when the mounting frame is located at the processing end of the pneumatic chuck, the sensing holes of each annular proximity sensing switch correspond one to one with each drill bit; 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 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 provided 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 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 the 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 drive 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 by 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 driving assembly of the 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 flip 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 flip 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 drive device; the fourth drive device is a cylinder or a pushing cylinder.

10. The conductive nozzle punching device according to claim 9, characterized in that: The locked portion is the first end toothed disc; the locking member is the 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 arranged on the linear slide; the first end gear disc is fixedly connected to the end of the rotating shaft that is not connected to the driving component, and is coaxially arranged with the rotating shaft; the second end gear 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 gear disc can engage and lock with the second end gear disc; the second end gear disc is used to engage and lock with the first end gear disc under the drive of the cylinder.

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