A punching device and punching mechanism for electrically conductive nozzle machining

Abstract

The application relates to a punching device and a punching mechanism for electrically conductive nozzle processing, wherein the punching device is provided with a sliding table; a mounting frame is fixedly arranged on the sliding table; a drill head assembly is arranged on the mounting frame; the drill head assembly comprises a drill head spindle capable of rotating under the drive of a driving motor and clamping a drill head; the sliding table is a linear sliding table; a point center assembly is arranged on the mounting frame; the point center assembly comprises a rotary flap, a center drill head, a rotary spindle and a divider; the rotary spindle is rotatably arranged on the mounting frame, and the rotary flap is fixedly arranged on the rotary spindle; the rotary flap is fixedly provided with the center drill head for the point center and corresponding to the drill head; the divider is fixedly mounted on the mounting frame; the output end of the divider is in transmission connection with the input end of the rotary spindle; the center drill head on the rotary flap is driven by the divider to be on the same axis as the corresponding drill head, and the center drill head is located in front of the drill head. The application can guarantee the consistency of the point center position and the punching position, thereby greatly improving the punching precision.

Description

Technical Field

[0001] This invention relates to conductive nozzle processing equipment, and particularly to a drilling device and drilling mechanism for processing conductive nozzles. Background Technology

[0002] The contact tip is a consumable part of welding equipment. It's the metal tip at the very end of the welding torch used to feed the welding wire. Contact tips are generally made of copper (chromium zirconium copper, pure copper, etc.). During contact tip manufacturing, holes need to be drilled into the bar stock. To ensure drilling accuracy, the bar stock is typically pre-centered. Centering involves using a center drill bit for precise pre-positioning of the hole, guiding the drill bit during machining and reducing errors.

[0003] Therefore, in order to complete the hole machining of the conductive tip, it is often necessary to first center the bar stock; then, the centered bar stock is clamped onto the drilling equipment for drilling. This operation not only affects the processing efficiency, but also, because centering and drilling are not performed on the same machine and the bar stock is transferred, processing errors are easily caused during processing, resulting in inconsistent drilling quality of the conductive tip.

[0004] To solve this problem, people considered whether the centering and drilling functions could be combined into one machine, thus reducing workpiece transfer. This led to the development of equipment that integrates centering and drilling functions. This equipment is configured by mounting the centering and drilling devices on an XY-axis servo slide, with both devices arranged along the Y-axis. The operation is as follows: first, the XY-axis servo slide moves in the Y-axis direction, then the centering device is moved to the machining position, followed by the X-axis servo slide moving in the X-axis direction to perform centering; after centering, the XY-axis servo slide returns to its X-axis position, then moves in the Y-axis direction to move the drilling device to the machining position, and finally, the XY-axis servo slide moves in the X-axis direction to perform drilling.

[0005] Although this method can reduce the movement of the bar stock, the existing XY axis servo slides initially require manual tool setting and are driven by a lead screw. The movement accuracy cannot meet the accuracy requirements when drilling with a conductive nozzle. Therefore, the drilling accuracy still needs to be improved in actual use. Summary of the Invention

[0006] The first objective of this invention is to provide a drilling device for processing conductive nozzles, which simplifies the movement direction of the slide table while ensuring the consistency between the center position and the drilling position, thereby greatly improving the drilling accuracy.

[0007] The technical solution to achieve the first objective of this invention is as follows: The drilling device for processing conductive nozzles in this invention has a slide table; a mounting frame is fixedly provided on the slide table; at least one drill bit assembly for drilling is provided on the mounting frame; the drill bit assembly includes a drill spindle that can rotate under the drive of a drive motor and clamp the drill bit; the slide table is a linear slide table that slides linearly along the axis of the drill bit; a point centering assembly is provided on the mounting frame; the point centering assembly includes a rotating flap, a center drill bit, a rotating spindle, and a divider; the rotating spindle is rotatably mounted on the mounting frame, and the rotating flap is fixedly mounted on the rotating spindle; a center drill bit for point centering 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 bit corresponds one-to-one with the drill bit; the divider is fixedly mounted on the mounting frame; the output end of the divider is drively connected to the input end of the rotating spindle; the divider drives the rotating spindle to rotate, thereby driving the rotating flap to rotate, and causing the center drill bit on the rotating flap to be on the same axis as the corresponding drill bit, and the center drill bit is located in front of the drill bit.

[0008] Furthermore, the aforementioned rotating spindle is rotatably positioned above the drill bit spindle; the rotating flap is flipped up and down under the drive of the divider; when the rotating flap is fully flipped down, the central drill bit and the drill bit are on the same axis.

[0009] It also includes a locking assembly for locking the rotating spindle when the center drill bit and the corresponding drill bit are on the same axis.

[0010] Furthermore, the aforementioned locking assembly includes a locked portion fixedly mounted on the rotating spindle, and a locking member that can cooperate with the locked portion to form a locking and unlocking mechanism under the drive of the drive device.

[0011] Furthermore, the locked part is a first end gear plate; the locking member is a second end gear plate; the first end gear plate and the second end gear plate cooperate for indexing and positioning; the driving device is a cylinder or a hydraulic cylinder; the locking member is fixedly installed at the extension end of the cylinder or hydraulic cylinder.

[0012] Furthermore, the aforementioned locking assembly includes a drive device, a rotating thin shaft, a first planar bearing, a second planar bearing, a first end gear plate, and a second end gear plate; the first end gear plate is fixedly mounted on a mounting bracket; the drive device is a cylinder or a hydraulic cylinder; the drive device is fixedly mounted on the mounting bracket; the drive device includes a housing, a piston rod is slidably disposed within the housing, and an air passage or oil passage for driving the piston rod to reciprocate; both ends of the piston rod extend out of the housing; a through cavity is coaxially disposed within the piston rod; the rotating thin shaft passes through the through cavity, and both ends of the rotating thin shaft are rotatably connected to both ends of the piston rod via the first planar bearing and the second planar bearing, respectively;

[0013] One end of the rotating spindle that is not connected to the divider drive passes through the center hole of the first end gear plate and the center hole of the second end gear plate in sequence, and is then fixedly connected to the rotating thin shaft coaxially; the second end gear plate is fixedly connected to the rotating spindle; the rotating spindle forms a sliding fit along the axis of the rotating spindle and a rotational fit along the axis of the rotating spindle in the center hole of the first end gear plate;

[0014] The output end of the divider is provided with an insertion slot, and a flat keyway is provided in the insertion slot; a flat key is provided on the input end of the rotating spindle; the flat key and the flat keyway form a sliding fit along the axial direction of the rotating spindle and form a circumferential drive limiting fit.

[0015] The rotary spindle is inserted into the insertion slot, and through the sliding fit between the flat key and the flat keyway, a drive connection is formed between the rotary spindle and the output end of the divider, as well as a sliding fit between the rotary spindle and the insertion slot.

[0016] The drive device is used to drive the rotating spindle to move along its axis, so as to cause the engagement and disengagement of the first end gear plate and the second end gear plate.

[0017] Furthermore, the aforementioned locked part is a slot, and the locking element is a pin.

[0018] Furthermore, the mounting bracket is equipped with three drill bit assemblies located on the same horizontal plane; the rotating flap is also equipped with three central drill bits.

[0019] The second objective of this invention is to provide a drilling mechanism for conductive nozzle processing, which can meet the requirements of drilling accuracy, high efficiency and stability in conductive nozzle processing.

[0020] The technical solution to achieve the second objective of the present invention is: the drilling mechanism for processing conductive nozzles in the present invention includes a frame; the frame is provided with the above-mentioned drilling device for processing conductive nozzles, and a clamping assembly; the clamping assembly includes chucks for clamping workpieces that correspond one-to-one with the drill bits of the drill bit assembly; the chucks are coaxially arranged with the corresponding drill bits.

[0021] The present invention has positive effects: (1) The present invention uses only a linear slide, so that the slide can move in one direction, effectively solving the accuracy error caused by the movement accuracy of the slide; secondly, the point center component is driven to rotate the rotating flip plate through the divider, so that the center drill bit can be on the axis of the drill bit each time it makes the point center, thereby ensuring that the point center and drilling are performed on the same axis, greatly improving the accuracy of the conductive nozzle drilling.

[0022] (2) The rotating flap in this invention adopts an up-and-down flipping method, which is very reasonable and can effectively avoid interference problems in the punching mechanism.

[0023] (3) The present invention can lock the rotating spindle through the locking component, 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 on the same axis, and further improving the drilling accuracy.

[0024] (4) The locking component of the present invention can further improve the indexing accuracy by directly cooperating with the first end toothed plate and the second end toothed plate, thereby not only ensuring the stability of the point center component, but also ensuring the position accuracy of the point center component each time it is in the processing state.

[0025] (5) In this invention, the piston rod of the drive device is specially designed with a through cavity inside, and forms a rotational fit with the rotating thin shaft through a first plane bearing and a second plane bearing. This allows the rotating thin shaft to rotate coaxially with the rotating main shaft and also enables the drive device to pull the rotating main shaft, thereby allowing the first end gear plate and the second end gear plate to mesh and disengage. At the same time, since the first end gear plate is fixedly mounted on the mounting bracket, the reference positioning of the first end gear plate is better, thereby making the rotation angle of the rotating main shaft more accurate and ensuring the coaxiality of the center drill bit and the drill bit. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the operation of the present invention;

[0029] Figure 3 This is a schematic diagram of the drive device in this invention;

[0030] Figure 4 This is a schematic diagram of the structure in which the input end of the rotating spindle mates with the insertion slot of the divider in this invention;

[0031] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Detailed Implementation

[0032] (Example 1)

[0033] See Figures 1 to 4 The drilling device for processing conductive nozzles in this invention has a slide table 1; a mounting bracket 2 is fixedly provided on the slide table 1; three drill bit assemblies for simultaneous drilling are provided on the mounting bracket 2; the drill bit assembly includes a drill bit spindle that can rotate under the drive of a drive motor and clamp drill bits 3; drill bits 3 of corresponding size and specifications can be replaced according to drilling requirements.

[0034] The slide 1 is a linear slide that slides along the axis of the drill bit; the mounting frame 2 is provided with a point center assembly 4; the point center assembly 4 includes a rotating flap 41, a center drill bit 42, a rotating spindle 43, and a divider 44; the rotating spindle 43 is rotatably mounted on the mounting frame 2, and the rotating flap 41 is fixedly mounted on the rotating spindle 43; three center drill bits 42 for point centering are fixedly mounted on the rotating flap 41; the center drill bits 42 correspond one-to-one with the drill bits 3; the divider 44 is fixedly mounted on the mounting frame 2; the output end of the divider 44 is connected to the input end of the rotating spindle 43; the divider 44 drives the rotating spindle 43 to rotate, thereby driving the rotating flap 41 to rotate, and causing the center drill bits 42 on the rotating flap 41 to be on the same axis as the corresponding drill bits 3, and the center drill bits 42 are located in front of the drill bits 3.

[0035] The rotating spindle 43 is rotatably positioned above the drill bit spindle; the rotating flap 41 is flipped up and down under the drive of the divider 44; when the rotating flap 41 has finished flipping down, the central drill bit 42 and the drill bit 3 are on the same axis.

[0036] The rotation angle of the divider 44 is set to 100°, which is 100° from the position where the rotating flap 41 is fully tilted down to the position where it is fully tilted up. The reason for setting the rotation angle of the divider 44 to 100° is that when the rotating flap 41 is fully tilted up, it allows the center component 4 to tilt backward, reducing interference (such as interference during feeding). Of course, this angle can be adjusted as needed.

[0037] It also includes a locking assembly 5 for locking the rotating spindle 43 when the central drill bit 42 and the corresponding drill bit 3 are on the same axis.

[0038] The locking assembly 5 includes a drive device 51, a rotating thin shaft 52, a first plane bearing 53, a second plane bearing 54, a first end gear 55, and a second end gear 56; the first end gear 55 is fixedly mounted on the mounting bracket 2; the drive device 51 is a cylinder; the drive device 51 is fixedly mounted on the mounting bracket 2; the drive device 51 includes a housing 511, a piston rod 512 is slidably disposed inside the housing 511, and an air passage 513 for driving the piston rod 512 to reciprocate; both ends of the piston rod 512 extend out of the housing 511; a through cavity is coaxially disposed inside the piston rod 512; the rotating thin shaft 52 passes through the through cavity, and both ends of the rotating thin shaft 52 are rotatably connected to the two ends of the piston rod 512 through the first plane bearing 53 and the second plane bearing 54, respectively;

[0039] One end of the rotating spindle 43 that is not connected to the divider 44 passes through the center hole of the first end gear 55 and the center hole of the second end gear 56 in sequence, and is then fixedly connected to the rotating thin shaft 52 coaxially; the second end gear 56 is fixedly connected to the rotating spindle 43; the rotating spindle 43 forms a sliding fit along the axis of the rotating spindle 43 and a rotational fit along the axis of the rotating spindle 43 in the center hole of the first end gear 55;

[0040] The output end of the divider 44 is provided with a insertion slot 441, and a flat keyway 442 is provided in the insertion slot 441; a flat key 431 is provided on the input end of the rotating spindle 43; the flat key 431 and the flat keyway 442 form a sliding fit along the axial direction of the rotating spindle 43, and form a circumferential drive limiting fit.

[0041] The rotating spindle 43 is inserted into the insertion slot 441, and through the sliding fit between the flat key 431 and the flat keyway 442, the rotating spindle 43 and the output end of the divider 44 are connected to form a drive connection, and the rotating spindle 43 and the insertion slot 441 are also connected to each other.

[0042] The drive device 51 is used to drive the rotating spindle 43 to move along its axis, so as to cause the first end gear 55 and the second end gear 56 to lock and disengage. The locking mechanism is the indexing and positioning principle of the end gear 55, which will not be described in detail here.

[0043] In this invention, the piston rod of the drive device 51 is specially designed with a through cavity inside. It forms a rotational engagement with the rotating shaft 52 via a first planar bearing 53 and a second planar bearing 54. This allows the rotating shaft 52 to rotate coaxially with the rotating main shaft 43 and also enables the drive device 51 to pull the rotating main shaft 43, thereby allowing the first end gear 55 and the second end gear 56 to engage and disengage. Furthermore, since the first end gear 55 is fixedly mounted on the mounting bracket 2, its reference positioning is better, resulting in more precise rotation angle of the rotating main shaft 43 and ensuring the coaxiality of the center drill bit 42 and the drill bit 4.

[0044] The present invention provides a drilling mechanism for processing conductive nozzles, comprising a frame; the frame is provided with the aforementioned drilling device for processing conductive nozzles, and a clamping assembly; the clamping assembly includes chucks for clamping workpieces, each corresponding to a drill bit 3 of the drill bit assembly; the chucks are coaxially arranged with the corresponding drill bit 3.

[0045] The working process of the drilling mechanism used for conductive tip processing in this invention is as follows:

[0046] First, the workpiece is loaded and clamped onto the clamping assembly using either manual labor or the feeding mechanism of the feeding system for a conductive nozzle punching machine (patent ZL2015101129480). As the clamping assembly is a conventional technical solution, it will not be shown in diagrams or described in more detail here.

[0047] Next, the divider 44 drives the rotating spindle 43 to rotate, and the rotating spindle 43 drives the rotating flap 41 to flip down. At this time, the central drill bit 42 on the rotating flap 41 is not yet on the same axis as the drill bit 3.

[0048] Next, after the rotating flap 41 has finished flipping down, the cylinder (i.e. the drive device 51) drives the piston rod 512, causing the rotating thin shaft 52 to push the rotating main shaft 43 to move, and causing the second end gear 56 on the rotating main shaft 43 to mesh with the first end gear 55 on the mounting bracket 2 to lock. At this time, the center drill bit 42 is on the same axis as the drill bit 3.

[0049] Next, the slide 1 moves linearly. At this time, the chuck of the clamping assembly rotates, causing the workpiece to rotate (i.e., the clamping spindle rotates). The center drill bit 42 contacts the drilling surface of the workpiece. As the workpiece rotates, the center drill bit 42 processes the center hole on the drilling surface of the workpiece.

[0050] Next, the slide 1 returns to its original position, the cylinder drives the second end gear 56 to disengage from the first end gear 55, and then the divider 44 drives the rotating flip plate 41 to flip up.

[0051] Next, the slide 1 moves linearly again, allowing the drill bit 3 to drill using the center hole on the workpiece as a reference, thus completing the drilling.

[0052] Repeat the above steps to perform multi-station synchronous processing.

[0053] (Example 2)

[0054] See Figure 5 In this invention, the locking component 5 includes a locked part fixedly mounted on the rotating spindle 43, and a locking member that can cooperate with the locked part to form a locking and unlocking mechanism under the drive of the driving device 51.

[0055] The locked part is a first end gear 55; the locking member is a second end gear 56; the first end gear 55 and the second end gear 56 cooperate for indexing and positioning; the driving device 51 is a cylinder or a hydraulic cylinder; the locking member is fixedly installed at the extension end of the cylinder or hydraulic cylinder.

[0056] Other technical features are the same as in Example 1.

[0057] (Example 3)

[0058] In this invention, the locking component 5 includes a locked portion fixedly mounted on the rotating spindle 43, and a locking member that can cooperate with the locked portion to form a locking and unlocking mechanism under the drive of the driving device 51. The locked portion is a slot, and the locking member is a pin.

[0059] Other technical features are the same as in Example 1.

[0060] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are 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 within the protection scope of the present invention.

Claims

1. A drilling device for processing conductive nozzles, comprising a slide table; a mounting bracket fixedly mounted on the slide table; at least one drill bit assembly for drilling mounted on the mounting bracket; the drill bit assembly comprising a drill bit spindle rotatable under the drive of a drive motor and capable of clamping a drill bit; characterized in that: The slide is a linear slide that slides along the axis of the drill bit; the mounting frame is equipped with a point centering assembly; the point centering assembly includes a rotating flap, a center drill bit, a rotating spindle, and a divider; the rotating spindle is rotatably mounted on the mounting frame, and the rotating flap is fixedly mounted on the rotating spindle; a center drill bit for point centering is fixedly mounted on the rotating flap; the number of center drill bits is the same as the number of drill bits, and each center drill bit corresponds to a drill bit; the divider is fixedly mounted on the mounting frame; the output end of the divider is connected to the input end of the rotating spindle; the divider drives the rotating spindle to rotate, thereby causing the rotating flap to rotate, and causing the center drill bit on the rotating flap to be on the same axis as the corresponding drill bit, with the center drill bit located in front of the drill bit; It also includes a locking assembly for locking the rotating spindle when the center drill bit and the corresponding drill bit are on the same axis; The locking assembly includes a drive device, a rotating thin shaft, a first planar bearing, a second planar bearing, a first end gear plate, and a second end gear plate; the first end gear plate is fixedly mounted on a mounting bracket; the drive device is a cylinder or a hydraulic cylinder; the drive device is fixedly mounted on the mounting bracket; the drive device includes a housing, a piston rod is slidably disposed within the housing, and an air passage or oil passage for driving the piston rod to reciprocate; both ends of the piston rod extend out of the housing; a through cavity is coaxially disposed within the piston rod; the rotating thin shaft passes through the through cavity, and both ends of the rotating thin shaft are rotatably connected to both ends of the piston rod via the first planar bearing and the second planar bearing, respectively; One end of the rotating spindle that is not connected to the divider drive passes through the center hole of the first end gear plate and the center hole of the second end gear plate in sequence, and is then fixedly connected to the rotating thin shaft coaxially; the second end gear plate is fixedly connected to the rotating spindle; the rotating spindle forms a sliding fit along the axis of the rotating spindle and a rotational fit along the axis of the rotating spindle in the center hole of the first end gear plate; The output end of the divider is provided with an insertion slot, and a flat keyway is provided in the insertion slot; a flat key is provided on the input end of the rotating spindle; the flat key and the flat keyway form a sliding fit along the axial direction of the rotating spindle and form a circumferential drive limiting fit. The rotary spindle is inserted into the insertion slot, and through the sliding fit between the flat key and the flat keyway, a drive connection is formed between the rotary spindle and the output end of the divider, as well as a sliding fit between the rotary spindle and the insertion slot. The drive device is used to drive the rotating spindle to move along its axis, so as to cause the engagement and disengagement of the first end gear plate and the second end gear plate.

2. The drilling device for processing conductive nozzles according to claim 1, characterized in that: The rotating spindle is rotatably positioned above the drill bit spindle; the rotating flap is flipped up and down under the drive of the divider; when the rotating flap is fully flipped down, the central drill bit and the drill bit are on the same axis.

3. The drilling device for processing conductive nozzles according to claim 1, characterized in that: The locking assembly includes a locked part fixedly mounted on the rotating spindle, and a locking element that can cooperate with the locked part to form a locking and unlocking mechanism under the drive of the drive device.

4. A drilling device for processing conductive nozzles according to claim 3, characterized in that: The locked part is a first end gear plate; the locking member is a second end gear plate; the first end gear plate and the second end gear plate cooperate for indexing and positioning; the driving device is a cylinder or a hydraulic cylinder; the locking member is fixedly installed at the extension end of the cylinder or hydraulic cylinder.

5. A drilling device for processing conductive nozzles according to claim 3, characterized in that: The locked part is a slot, and the locking element is a pin.

6. A drilling device for processing conductive nozzles according to claim 1, characterized in that: The mounting bracket is equipped with three drill bit assemblies located on the same horizontal plane; the rotating flap is also equipped with three central drill bits.

7. A drilling mechanism for processing conductive nozzles, comprising a frame; characterized in that: The frame is provided with a drilling device for processing conductive nozzles as described in claim 1, and a clamping assembly; the clamping assembly includes a chuck for clamping workpieces, which corresponds one-to-one with the drill bits of the drill bit assembly; the chuck and the corresponding drill bit are coaxially arranged.

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