A stud welding nail feed mechanism

Abstract

The utility model provides a kind of nail feeding mechanism for stud welding, belong to stud welding welding processing equipment technical field.The utility model embodiment provides the nail feeding mechanism for stud welding, is inserted with nail guide pipe in the sleeve hole of base, and the position of being located above nail guide pipe is equipped with screw conveying assembly on base, and guiding assembly is set between the blanking opening of screw conveying assembly and the feed opening of nail guide pipe, before bolt or screw falls by the blanking opening of screw conveying assembly, linear drive mechanism drives sliding block to move first position, bolt or screw falling by screw conveying assembly blanking opening keeps vertical state via the feed opening of nail guide pipe and enters nail guide pipe under the guidance of guiding channel, can effectively prevent bolt or screw to appear large amplitude skew, to avoid skew bolt or screw in the moment of entering nail feeding mechanism nail guide pipe to nail guide pipe produce strong impact effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of stud welding equipment, and in particular, relates to a stud feeding mechanism for stud welding. Background Technology

[0002] In the traditional automotive manufacturing industry, stud welding is currently the mainstream welding method. Stud welding usually requires the use of a large number of bolts or screws, which necessitates the use of a stud feeding mechanism to efficiently deliver the bolts or screws.

[0003] Currently, in the process of feeding bolts or screws, the bolts or screws used in stud welding are prone to tilting. This causes a strong impact on the feeding guide tube of the feeding mechanism when the bolts or screws enter the feeding guide tube, which can easily damage the feeding guide tube and affect the normal feeding operation of the feeding mechanism. Utility Model Content

[0004] Based on the above-mentioned problems in the prior art, the purpose of this utility model embodiment is to provide a stud feeding mechanism for stud welding, so as to solve the technical problem that the bolt or screw will have a strong impact on the stud feeding guide tube when it enters the stud feeding mechanism, which will easily damage the stud feeding guide tube and affect the normal operation of the stud feeding mechanism.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a stud feeding mechanism for stud welding, comprising: Base; A blow-nail assembly is used to blow a bolt or screw with airflow to deliver the bolt or screw to a target position; the blow-nail assembly includes a nail delivery guide tube, an air pump, and an air supply pipe connecting the nail delivery guide tube to the air pump; the base is provided with a sleeve hole for positioning the nail delivery guide tube, and the nail delivery guide tube is vertically inserted into the sleeve hole. A screw delivery assembly for sequentially delivering a plurality of said bolts or screws to the blow-nail assembly, the screw delivery assembly being disposed on the base; and A guide assembly is used to guide the bolt or screw into the screw feeding guide tube in a vertical state. The guide assembly includes a sliding block slidably disposed on the base, a linear drive mechanism for driving the sliding block to move linearly, and a blocking assembly disposed on the sliding block. The sliding block is provided with a guide channel connecting the material drop port of the screw conveying assembly and the material inlet of the screw feeding guide tube. Specifically, when the linear drive mechanism drives the sliding block to move to a first position, the guide channel connects the discharge port of the screw conveying assembly with the feed port of the screw feeding guide tube, so that the bolt or screw conveyed by the screw conveying assembly can enter the screw feeding guide tube vertically through the guide channel; when the linear drive mechanism drives the sliding block to move to a second position, the guide channel is offset from the discharge port of the screw conveying assembly and the feed port of the screw feeding guide tube, and the blocking assembly can block the feed port of the screw feeding guide tube.

[0006] Furthermore, the screw conveying assembly includes a screw conveying track disposed on the base and having the discharge port, a screw pusher assembly for pushing multiple bolts or screws along the path defined by the screw conveying track to the discharge port, and a screw pusher assembly for pushing the bolts or screws one by one from the discharge port, the guide channel, and the feed port of the screw feeding guide tube into the screw feeding guide tube. The screw conveying track is provided with a T-shaped guide groove that can guide the bolts or screws to slide to the discharge port in a vertical state with the nut on top and the nut on the bottom.

[0007] Furthermore, a stopper is provided on the nail feeding track near the material drop port to stop the bolt or screw.

[0008] Furthermore, the pusher assembly includes a pusher block slidably disposed on the pusher track, a screw rotatably disposed on the pusher track, a drive motor for driving the screw to rotate, and a movable frame connecting the pusher block to the screw. The movable frame is provided with an internal threaded hole that is threadedly engaged with the screw, and the movable frame is threadedly connected to the screw through the internal threaded hole.

[0009] Furthermore, two screws are rotatably arranged on the nail feeding track, and the two screws are symmetrically arranged on both sides of the length direction of the nail feeding track. The nail pushing assembly also includes a first synchronous pulley fixedly connected to one of the screws, a second synchronous pulley fixedly connected to the other screw, a third synchronous pulley fixedly connected to the motor shaft of the drive motor, and a synchronous belt connecting the first synchronous pulley, the second synchronous pulley, and the third synchronous pulley.

[0010] Furthermore, the pin assembly includes a fixed frame disposed on the pin feeding track, a pin cylinder disposed on the fixed frame, and a pin rod connected to the piston rod of the pin cylinder. The fixed frame is provided with a first guide sliding hole for guiding the pin rod to move axially and a second guide sliding hole for guiding the piston rod of the pin cylinder to move axially. The pin rod is slidably inserted in the first guide sliding hole, and the piston rod of the pin cylinder is slidably inserted in the second guide sliding hole.

[0011] Furthermore, the sliding block is provided with a receiving groove for accommodating the sealing component. The sealing component includes a guide post vertically arranged in the receiving groove, a helical spring sleeved on the guide post and located in the receiving groove, and a blocking ball provided in the receiving groove for blocking the feed port of the nail feeding guide tube. The helical spring can elastically push the blocking ball toward the outside of the receiving groove.

[0012] Furthermore, the sliding block is located between the discharge port of the screw conveying assembly and the feed port of the screw feeding guide tube, and the diameter of the guide channel is the same as the diameter of the screw feeding guide tube; when the sliding block moves to the first position, the central axes of the discharge port of the screw conveying assembly, the guide channel, and the feed port of the screw feeding guide tube are collinear.

[0013] Furthermore, the linear drive mechanism is a push cylinder, electric cylinder, or hydraulic cylinder. The cylinder body of the push cylinder, electric cylinder, or hydraulic cylinder is connected to the base through a fixed seat, and the telescopic rod of the push cylinder, the electric cylinder, or the hydraulic cylinder is connected to the sliding block.

[0014] Furthermore, the stud welding feeding mechanism also includes a connecting bracket for connection to the stud welding machine, the connecting bracket having multiple mounting holes for bolts to pass through.

[0015] Compared with the prior art, one or more technical solutions in the embodiments of this utility model have at least one of the following beneficial effects: The stud welding feeding mechanism in this embodiment of the invention has a stud feeding guide tube inserted into the sleeve hole of the base. A screw conveying assembly is provided on the base and above the stud feeding guide tube. A guide assembly is set between the dropping port of the screw conveying assembly and the feeding port of the stud feeding guide tube. Before the bolt or screw falls through the dropping port of the screw conveying assembly, the linear drive mechanism drives the sliding block to move to a first position. The guide channel on the sliding block connects the dropping port of the screw conveying assembly and the feeding port of the stud feeding guide tube. At this time, the bolt or screw falling from the dropping port of the screw conveying assembly is kept vertical under the guidance of the guide channel and enters the stud feeding guide tube through the feeding port of the stud feeding guide tube. This can effectively prevent the bolt or screw from being skewed to a large extent, thereby avoiding the strong impact of the skewed bolt or screw on the stud feeding guide tube when it enters the stud feeding mechanism. This effectively avoids the stud feeding guide tube being damaged by the strong impact of the skewed bolt or screw, which helps to extend the service life of the stud feeding guide tube and improve the stability and reliability of the stud feeding mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural schematic diagram of the stud welding feeding mechanism provided by this utility model; Figure 2 A cross-sectional view of the stud feeding mechanism for stud welding provided by this utility model; Figure 3 Another cross-sectional view of the stud feeding mechanism for stud welding provided by this utility model; Figure 4 A three-dimensional structural diagram of the screw delivery assembly provided by this utility model; Figure 5 An exploded view of the stud welding feeding mechanism provided by this utility model; Figure 6 An assembly drawing of the sliding block and sealing assembly provided by this utility model; Figure 7 for Figure 6 A cross-sectional view of the sliding block and the sealing assembly; Figure 8 Another assembly drawing of the sliding block and sealing assembly provided by this utility model; Figure 9 This is a three-dimensional structural diagram of the connection between the movable frame and the pusher block provided by this utility model.

[0018] The following are the labeling elements in the figure: 1-Base; 11-Sleeve hole; 12-Slide groove; 2- Nail blowing assembly; 21- Nail feeding guide tube; 211- Feed inlet; 22- Air pump; 23- Air delivery pipe; 3-Screw conveying assembly; 31-Screw conveying track; 311-T-shaped guide channel; 312-Discharge port; 32-Screw pusher assembly; 321-Screw pusher block; 322-Screw; 323-Drive motor; 324-Moving frame; 325-Internal threaded hole; 326-First synchronous pulley; 327-Second synchronous pulley; 328-Third synchronous pulley; 329-Synchronous belt; 33-Top screw assembly; 331-Fixed frame; 332-Top screw cylinder; 333-Top screw rod; 334-First guide slide hole; 335-Second guide slide hole; 34-Stop component; 4-Guide assembly; 41-Sliding block; 411-Guide channel; 412-Accommodation groove; 413-Slide rail; 42-Linear drive mechanism; 43-Blocking assembly; 431-Guide post; 432-Helical spring; 433-Blocking ball; 5-Connecting bracket; 51-Mounting hole; 6-Bearing housing; 7-Guide bolt or screw. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when an element is referred to as "connected to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "attached" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0022] Please refer to the following: Figures 1 to 9The stud welding feeding mechanism provided in this embodiment of the utility model will now be described. Please refer to the following for further details. Figure 1 , Figure 2 , Figure 3 and Figure 4 The stud welding feeding mechanism provided in this embodiment includes a base 1, a stud blowing assembly 2, a screw conveying assembly 3, and a guide assembly 4. The stud blowing assembly 2 is used to blow air onto the bolt or screw to deliver it to the target position. The stud blowing assembly 2 includes a stud feeding guide tube 21, an air pump 22, and an air supply pipe 23 connecting the stud feeding guide tube 21 and the air pump 22. The base 1 is provided with a sleeve hole 11 for positioning the stud feeding guide tube 21, and the stud feeding guide tube 21 is vertically inserted into the sleeve hole 11. It should be noted that, in order to facilitate efficient and stable stud blowing operation of the stud blowing assembly 2, a solenoid valve is installed on the air supply pipe 23, and the solenoid valve and the air pump 22 are controlled by a PLC controller to ensure that the bolt or screw is accurately delivered to the target position using compressed air. The screw conveying assembly 3 is used to convey multiple bolts or screws one by one to the blow-nail assembly 2. The screw conveying assembly 3 is mounted on the base 1. It allows multiple bolts or screws to be sequentially conveyed and discharged through its discharge port 312 to the blow-nail assembly 2, achieving orderly discharge and reducing the occurrence of discharge blockages. Before the bolts or screws fall into the feed inlet 211 of the feed guide tube 21 through the discharge port 312 of the screw conveying assembly 3, the guide assembly 4 guides the bolts or screws 7 to enter the feed guide tube 21 vertically, preventing significant skewness. This avoids the strong impact of skewed bolts or screws on the feed guide tube 21 upon entry, effectively preventing damage to the feed guide tube 21 from strong impacts. This extends the service life of the feed guide tube 21 and improves the stability and reliability of the feed mechanism. For details, please refer to [reference needed]. Figure 6 , Figure 7 and Figure 8 The guide assembly 4 includes a sliding block 41 slidably mounted on the base 1, a linear drive mechanism 42 for driving the sliding block 41 to move linearly, and a sealing assembly 43 mounted on the sliding block 41. The sliding block 41 is provided with a guide channel 411 connecting the dropping port 312 of the screw conveying assembly 3 and the feeding port 211 of the screw feeding guide tube 21. (Please refer to the relevant documentation for further details.) Figure 2 When the linear drive mechanism 42 drives the sliding block 41 to move to the first position, the guide channel 411 connects the discharge port 312 of the screw conveying assembly 3 with the feed port 211 of the screw feeding guide tube 21, so that the bolts or screws conveyed by the screw conveying assembly 3 can enter the screw feeding guide tube 21 vertically through the guide channel 411. Please refer to the following: Figure 3When the linear drive mechanism 42 drives the sliding block 41 to move to the second position, the guide channel 411 is misaligned with the dropping port 312 of the screw conveying assembly 3 and the inlet 211 of the nail feeding guide tube 21, and the sealing assembly 43 can block the inlet 211 of the nail feeding guide tube 21. When the stud welding nail feeding mechanism provided in this embodiment of the present invention is working, multiple bolts or screws are first sequentially conveyed to the dropping port 312 of the screw conveying assembly 3 through the screw conveying assembly 3. Before the bolts or screws fall into the inlet 211 of the nail feeding guide tube 21 through the dropping port 312 of the screw conveying assembly 3, the linear drive mechanism 42 drives the sliding block 41 to move to the first position. The guide channel 411 connects the dropping port 312 of the screw conveying assembly 3 and the inlet 211 of the nail feeding guide tube 21. The bolts or screws falling from the dropping port 312 of the screw conveying assembly 3 pass through the guide channel 411. When the bolt or screw 7 is fed into the feeding guide tube 21, it is guided vertically through the feed port 211 of the feeding guide tube 21. This effectively prevents the bolt or screw from becoming significantly misaligned, thus avoiding a strong impact on the feeding guide tube 21 when it enters the feeding mechanism. This effectively prevents damage to the feeding guide tube 21 from strong impacts by misaligned bolts or screws, extending its service life and improving the stability and reliability of the feeding mechanism. Simultaneously, since the feeding guide tube 21 is vertically inserted into the sleeve hole 11 of the base 1, it enhances the positioning stability of the feeding guide tube 21, preventing it from becoming misaligned when compressed air blows the bolt or screw.

[0023] The stud welding feeding mechanism provided in this embodiment of the utility model, compared with the prior art, has a stud feeding guide tube 21 inserted into the sleeve hole 11 of the base 1, a screw feeding assembly 3 provided on the base 1 and above the stud feeding guide tube 21, and a guide assembly 4 provided between the dropping port 312 of the screw feeding assembly 3 and the feeding port 211 of the stud feeding guide tube 21. Before the bolt or screw falls through the dropping port 312 of the screw feeding assembly 3, the linear drive mechanism 42 drives the sliding block 41 to move to a first position, and the dropping port 312 of the screw feeding assembly 3 and the feeding guide tube 21 are connected through the guide channel 411 on the sliding block 41. At the feed inlet, the bolts or screws falling from the feed port 312 of the screw conveying assembly 3 are kept vertical under the guidance of the guide channel 411 and enter the feeding guide tube 21 through the feed port 211 of the feeding guide tube 21. This can effectively prevent the bolts or screws from being skewed to a large extent, thereby avoiding the strong impact of skewed bolts or screws on the feeding guide tube 21 when they enter the feeding mechanism. This effectively avoids damage to the feeding guide tube 21 caused by the strong impact of skewed bolts or screws, which helps to extend the service life of the feeding guide tube 21 and improve the stability and reliability of the feeding mechanism.

[0024] Please refer to the following: Figure 1 , Figure 4 and Figure 5 In some embodiments, the screw conveying assembly 3 includes a screw conveying track 31 disposed on the base 1 and having a discharge port 312, a screw pushing assembly 32 for pushing a plurality of bolts or screws along the path defined by the screw conveying track 31 to the discharge port 312, and a screw pushing assembly 33 for pushing the bolts or screws one by one from the discharge port 312, the guide channel 411, and the feed port 211 of the screw feeding guide tube 21 into the screw feeding guide tube 21. The screw conveying track 31 is provided with a T-shaped guide groove 311 that can guide the bolts or screws 7 to slide in a vertical state with the nut on top and the nut on the bottom to the discharge port 312. In this embodiment, multiple bolts or screws are placed vertically in the T-shaped guide channel 311 with the nuts on top and the nuts on the bottom. The pusher assembly 32 pushes the multiple bolts or screws to move along the path defined by the feed track 31 to the discharge port 312. When a bolt or screw is delivered to the discharge port 312 and the linear drive mechanism 42 drives the sliding block 41 to move to the first position, the pusher assembly 33 pushes the bolt or screw delivered to the discharge port 312 from top to bottom, so that the bolt or screw is pushed into the feed guide tube 21 one by one from the discharge port 312, the guide channel 411, and the feed port 211 of the feed guide tube 21 into the predetermined position. This not only avoids the situation of nail jamming, but also speeds up the speed at which the bolt or screw enters the feed guide tube 21 from the discharge port 312, the guide channel 411, and the feed port 211 of the feed guide tube 21.

[0025] Please refer to the following: Figure 1 and Figure 2 In some embodiments, a stopper 34 for stopping bolts or screws is provided on the nail feeding track 31 near the drop port 312. The stopper 34 blocks and limits the bolts or screws, so that the bolts or screws can be accurately fed to the drop port 312 on the nail feeding track 31.

[0026] Please refer to the following: Figure 1 , Figure 5 and Figure 9In some embodiments, the pusher assembly 32 includes a pusher block 321 slidably disposed on the pusher track 31, a screw 322 rotatably disposed on the pusher track 31, a drive motor 323 driving the screw 322 to rotate, and a movable frame 324 connecting the pusher block 321 to the screw 322. The movable frame 324 is provided with an internal threaded hole 325 that is threadedly engaged with the screw 322, and the movable frame 324 is threadedly connected to the screw 322 through the internal threaded hole 325. In this embodiment, the drive motor 323 is controlled by a PLC controller to drive the screw 322 to rotate. Under the action of the external thread of the screw 322 and the internal thread of the internal threaded hole 325 on the movable frame 324, the movable frame 324 can drive the pusher block 321 to slide along the pusher direction of the pusher track 31, thereby pushing multiple bolts or screws along the path defined by the pusher track 31 to the discharge port 312 on the pusher track 31. It should be noted that both ends of the screw 322 are rotatably mounted on the nail feed track 31 via bearing seats 6 and bearings, respectively, and the drive motor 323 is fixedly mounted in the receiving hole of the nail feed track 31. It should also be noted that the movable frame 324 can also be provided with corresponding through holes, in which a nut that mates with the screw 322 is installed.

[0027] Please refer to the following: Figure 1 , Figure 3 and Figure 4 In some embodiments, two screws 322 are rotatably mounted on the nail feeding track 31, symmetrically arranged on both sides of the length direction of the nail feeding track 31. The nail pushing assembly 32 also includes a first synchronous pulley 326 fixedly connected to one screw 322, a second synchronous pulley 327 fixedly connected to the other screw 322, a third synchronous pulley 328 fixedly connected to the motor shaft of the drive motor 323, and a synchronous belt 329 connecting the first synchronous pulley 326, the second synchronous pulley 327, and the third synchronous pulley 328. In this embodiment, the two screws 322 are symmetrically arranged on both sides of the length direction of the nail feeding track 31. Through the cooperation of the synchronous belt 329 with the first synchronous pulley 326, the second synchronous pulley 327, and the third synchronous pulley 328, the two screws 322 can be synchronously driven to rotate by a single drive motor 323, which helps to enhance the stability of the sliding of the nail pushing block 321 driven by the moving frame 324.

[0028] Please refer to the following: Figure 1 , Figure 2 and Figure 3In some embodiments, the pin assembly 33 includes a fixed frame 331 disposed on the pin feeding track 31, a pin cylinder 332 disposed on the fixed frame 331, and a pin rod 333 connected to the piston rod of the pin cylinder 332. The fixed frame 331 is provided with a first guide sliding hole 334 for guiding the pin rod 333 to move axially and a second guide sliding hole 335 for guiding the piston rod of the pin cylinder 332 to move axially. The pin rod 333 is slidably inserted in the first guide sliding hole 334, and the piston rod of the pin cylinder 332 is slidably inserted in the second guide sliding hole 335. In this embodiment, the jacking rod 333 is driven to move axially by the jacking cylinder 332, so that the bolt or screw delivered to the dropping port 312 can be pushed from top to bottom by the jacking rod 333, so that the bolt or screw is pushed into the predetermined position in the feeding guide tube 21 one by one from the dropping port 312, the guide channel 411, and the feeding guide tube 21 inlet 211. This not only avoids the situation of nail jamming, but also speeds up the speed at which the bolt or screw enters the feeding guide tube 21 from the dropping port 312, the guide channel 411, and the feeding guide tube 21 inlet 211.

[0029] Please refer to the following: Figure 6 , Figure 7 and Figure 8 In some embodiments, the sliding block 41 is provided with a receiving groove 412 for accommodating the sealing assembly 43. The sealing assembly 43 includes a guide post 431 vertically disposed in the receiving groove 412, a helical spring 432 sleeved on the guide post 431 and located in the receiving groove 412, and a blocking ball 433 disposed in the receiving groove 412 for blocking the feed port 211 of the nail feeding guide tube 21. The helical spring 432 can elastically push the blocking ball 433 toward the outside of the receiving groove 412. For this embodiment, please refer to the reference. Figure 3 When the linear drive mechanism 42 drives the sliding block 41 to move to the second position, the guide channel 411 is misaligned with the discharge port 312 of the screw conveying assembly 3 and the feed port 211 of the screw feeding guide tube 21. The blocking ball 433 is partially pushed out under the elastic force of the coil spring 432, allowing it to block the feed port 211 of the screw feeding guide tube 21, maintaining the good sealing of the screw feeding guide tube 21. The compressed airflow in the screw feeding guide tube 21 then delivers the bolt or screw to the target position. It should be noted that the blocking ball 433 can be, but is not limited to, a steel ball or a plastic ball. Please refer to [reference needed]. Figure 2 and Figure 8When the linear drive mechanism 42 drives the sliding block 41 to a position other than the second position, that is, when the linear drive mechanism 42 drives the sliding block 41 to move to a position where the ball stopper 433 is misaligned with the feed inlet 211 of the nail feeding guide tube 21, the ball stopper 433 compresses the helical spring 432 and can retract into the receiving groove 412 on the sliding block 41. The ball stopper 43 can also roll on the base 1, reducing friction when the linear drive mechanism 42 drives the sliding block 41 to move and ensuring smooth movement of the sliding block 41. It should be noted that two parallel and spaced slide rails 413 are provided on the sliding block 41. The base 1 has corresponding grooves 12 that slide and engage with the corresponding slide rails 413. Each slide rail 413 is slidably installed in its corresponding groove 12.

[0030] Please refer to the following: Figure 1 , Figure 2 and Figure 3 In some embodiments, the sliding block 41 is located between the dropping port 312 of the screw conveying assembly 3 and the inlet 211 of the screw feeding guide tube 21. The diameter of the guide channel 411 is the same as the diameter of the screw feeding guide tube 21. When the sliding block 41 moves to the first position, the central axes of the dropping port 312, the guide channel 411, and the inlet 211 of the screw feeding guide tube 21 are collinear. When the bolt or screw conveyed to the dropping port 312 is pushed from top to bottom by the push rod 333, the bolt or screw can be quickly and accurately pushed into the predetermined position in the screw feeding guide tube 21 one by one from the dropping port 312, the guide channel 411, and the inlet 211 of the screw feeding guide tube 21. This not only avoids the situation of nail jamming, but also speeds up the speed at which the bolt or screw enters the screw feeding guide tube 21 from the dropping port 312, the guide channel 411, and the inlet 211 of the screw feeding guide tube 21.

[0031] Understandably, in some embodiments, the linear drive mechanism 42 is a push cylinder, electric cylinder, or hydraulic cylinder. The cylinder body of the linear drive mechanism 42 is connected to the base 1 via a fixed seat, and the telescopic rod of the push cylinder is connected to the sliding block 41.

[0032] Please refer to the following: Figure 1 and Figure 4 In some embodiments, to facilitate the installation of the stud welding feeding mechanism at a predetermined position on the stud welding machine, the stud welding feeding mechanism further includes a connecting bracket 5 for connection to the stud welding machine, and the connecting bracket 5 is provided with a plurality of mounting holes 51 for bolts to pass through.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stud feeding mechanism for stud welding, characterized in that, include: Base; A blow-nail assembly is used to blow a bolt or screw with airflow to deliver the bolt or screw to a target position; the blow-nail assembly includes a nail delivery guide tube, an air pump, and an air supply pipe connecting the nail delivery guide tube to the air pump; the base is provided with a sleeve hole for positioning the nail delivery guide tube, and the nail delivery guide tube is vertically inserted into the sleeve hole. A screw delivery assembly for sequentially delivering a plurality of said bolts or screws to the blow-nail assembly, the screw delivery assembly being disposed on the base; and A guide assembly is used to guide the bolt or screw into the screw feeding guide tube in a vertical state. The guide assembly includes a sliding block slidably disposed on the base, a linear drive mechanism for driving the sliding block to move linearly, and a blocking assembly disposed on the sliding block. The sliding block is provided with a guide channel connecting the material drop port of the screw conveying assembly and the material inlet of the screw feeding guide tube. Specifically, when the linear drive mechanism drives the sliding block to move to a first position, the guide channel connects the discharge port of the screw conveying assembly with the feed port of the screw feeding guide tube, so that the bolt or screw conveyed by the screw conveying assembly can enter the screw feeding guide tube vertically through the guide channel; when the linear drive mechanism drives the sliding block to move to a second position, the guide channel is offset from the discharge port of the screw conveying assembly and the feed port of the screw feeding guide tube, and the blocking assembly can block the feed port of the screw feeding guide tube.

2. The stud welding feeding mechanism as described in claim 1, characterized in that, The screw conveying assembly includes a screw conveying track disposed on the base and having the discharge port, a screw pusher assembly for pushing multiple bolts or screws along the path defined by the screw conveying track to the discharge port, and a screw pusher assembly for pushing the bolts or screws one by one from the discharge port, the guide channel, and the feed port of the screw feeding guide tube into the screw feeding guide tube. The screw conveying track is provided with a T-shaped guide groove that can guide the bolts or screws to slide to the discharge port in a vertical state with the nut on top and the nut on the bottom.

3. The stud welding feeding mechanism as described in claim 2, characterized in that, The feed rail is provided with a stopper near the feed port to stop the bolts or screws.

4. The stud welding feeding mechanism as described in claim 2, characterized in that, The pusher assembly includes a pusher block slidably disposed on the pusher track, a screw rotatably disposed on the pusher track, a drive motor for driving the screw to rotate, and a movable frame connecting the pusher block to the screw. The movable frame is provided with an internal threaded hole that is threadedly engaged with the screw, and the movable frame is threadedly connected to the screw through the internal threaded hole.

5. The stud welding feeding mechanism as described in claim 4, characterized in that, Two screws are rotatably mounted on the nail feeding track, and the two screws are symmetrically arranged on both sides of the length direction of the nail feeding track. The nail pushing assembly also includes a first synchronous pulley fixedly connected to one of the screws, a second synchronous pulley fixedly connected to the other screw, a third synchronous pulley fixedly connected to the motor shaft of the drive motor, and a synchronous belt connecting the first synchronous pulley, the second synchronous pulley, and the third synchronous pulley.

6. The stud welding feeding mechanism as described in claim 2, characterized in that, The pin assembly includes a fixed frame disposed on the pin feeding track, a pin cylinder disposed on the fixed frame, and a pin rod connected to the piston rod of the pin cylinder. The fixed frame is provided with a first guide sliding hole for guiding the pin rod to move axially and a second guide sliding hole for guiding the piston rod of the pin cylinder to move axially. The pin rod is slidably inserted in the first guide sliding hole, and the piston rod of the pin cylinder is slidably inserted in the second guide sliding hole.

7. The stud welding feeding mechanism as described in claim 1, characterized in that, The sliding block is provided with a receiving groove for accommodating the sealing component. The sealing component includes a guide post vertically arranged in the receiving groove, a helical spring sleeved on the guide post and located in the receiving groove, and a blocking ball provided in the receiving groove for blocking the feed port of the nail feeding guide tube. The helical spring can elastically push the blocking ball toward the outside of the receiving groove.

8. The stud welding feeding mechanism as described in claim 1, characterized in that, The sliding block is located between the discharge port of the screw conveying assembly and the feed port of the screw feeding guide tube, and the diameter of the guide channel is the same as the diameter of the screw feeding guide tube; when the sliding block moves to the first position, the central axes of the discharge port of the screw conveying assembly, the guide channel, and the feed port of the screw feeding guide tube are collinear.

9. The stud welding feeding mechanism as described in claim 1, characterized in that, The linear drive mechanism is a push cylinder, electric cylinder, or hydraulic cylinder. The cylinder body of the push cylinder, electric cylinder, or hydraulic cylinder is connected to the base through a fixed seat. The telescopic rod of the push cylinder, electric cylinder, or hydraulic cylinder is connected to the sliding block.

10. The stud welding feeding mechanism as described in any one of claims 1 to 9, characterized in that, The stud welding feeding mechanism also includes a connecting bracket for connection to the stud welding machine, the connecting bracket having multiple mounting holes for bolts to pass through.

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