Error-proofing structure for long and short welding studs

Abstract

The utility model provides an error-proofing structure for long and short welding studs, which comprises a base, a stud feeding guide rail, a telescopic cylinder, a carriage component and a proximity switch, the stud feeding guide rail is mounted on one side of the base, a stud blocking component for blocking the long welding studs is arranged at the bottom of the stud feeding guide rail, the telescopic cylinder is arranged at one end of the base, and the carriage component is mounted on the telescopic cylinder. The base is provided with a telescopic cylinder, the carriage assembly is movably installed in the base and driven by the telescopic cylinder to move, a nail receiving notch is formed in one side face of the carriage assembly, and the proximity switch is arranged on the side face, away from the telescopic cylinder, of the base. And the proximity switch is communicated with the nail receiving notch and is used for sensing whether a welding nail exists in the nail receiving notch or not. According to the utility model, the long nails on the nail feeding guide rail are intercepted through the nail blocking assembly, and whether the welding nails exist in the nail feeding notch or not is sensed and detected through the proximity switch, so that the conditions of wrong feeding, wrong welding and the like of the welding nails are effectively prevented, and the welding efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, and particularly relates to an anti-misalignment structure for long and short welding studs. Background Art

[0002] A welding stud belongs to a fastener for high-strength and high-rigidity connection. A welding stud is the abbreviation of a cylinder head welding stud for arc stud welding. A welding stud generally consists of a stud head part and a cylindrical part. The stud head part can be in various shapes such as a cylinder head and a square stud head. The uses of welding studs are very extensive. When welding, an automatic feeding machine can be used to achieve automatic stud feeding, thereby improving the welding efficiency. However, welding studs with different lengths may be mixed in the automatic feeding machine, resulting in situations such as incorrect stud feeding and miswelding in the automatic feeding machine. Content of the Utility Model

[0003] The utility model provides an anti-misalignment structure for long and short welding studs, aiming to solve the problem that the prior art solution cannot detect the length of welding studs, resulting in incorrect feeding and miswelding.

[0004] The utility model proposes an anti-misalignment structure for long and short welding studs, including: a base, a stud feeding guide rail, a telescopic cylinder, a drag plate assembly and a proximity switch. The stud feeding guide rail is installed on one side of the base, and a stud blocking assembly for intercepting long welding studs is arranged at the bottom of the stud feeding guide rail. The telescopic cylinder is arranged at one end of the base. The drag plate assembly is movably installed in the base and moves under the drive of the telescopic cylinder. A stud receiving notch is arranged on one side surface of the drag plate assembly. The proximity switch is arranged on the side surface of the base far from the telescopic cylinder. When the telescopic cylinder drives the drag plate assembly to move to the end of the base far from the telescopic cylinder, the proximity switch is communicated with the stud receiving notch to sense whether there is a welding stud in the stud receiving notch.

[0005] Further, the base further includes a bottom plate, a baffle and a cover plate, and the baffle and the cover plate are both fixedly installed on the bottom plate.

[0006] Further, the drag plate assembly includes a drag plate and a fork joint. The drag plate is movably installed in the base, and the fork joint is fixedly arranged at one end of the drag plate close to the telescopic cylinder.

[0007] Further, a proximity switch slot is arranged on the side surface of the drag plate, and the proximity switch slot is communicated with the stud receiving notch.

[0008] Further, the stud receiving notch includes a first notch and a second notch. The first notch is communicated with the second notch, and the radius of the first notch is greater than the radius of the second notch.

[0009] Further, a push rod is provided at one end of the telescopic cylinder close to the fork joint, and the push rod is adapted to the fork joint.

[0010] Further, the nail feeding guide rail includes a right guide plate and a left guide plate. The right guide plate and the left guide plate are both installed on one side of the base, and the right guide plate and the left guide plate are arranged at intervals to form a guide groove.

[0011] Further, the nail blocking assembly includes a nail blocking seat and an adjusting screw. The nail blocking seat is fixedly arranged between the right guide plate and the left guide plate, and the adjusting screw is fixedly arranged on the nail blocking seat.

[0012] Further, a connecting head is further included. The connecting head is located above the baffle, and the connecting head and the cover plate are on the same horizontal plane. An outlet for communicating with an external feeding pipe is provided on the connecting head.

[0013] Further, an air joint is further included. The air joint is connected to the bottom plate and corresponds to the outlet.

[0014] Compared with the prior art, the present utility model provides an anti-misalignment structure for long and short welding nails, including: a base, a nail feeding guide rail, a telescopic cylinder, a drag plate assembly and a proximity switch. The nail feeding guide rail is installed on one side of the base, and a nail blocking assembly for intercepting long welding nails is arranged at the bottom of the nail feeding guide rail. The telescopic cylinder is arranged at one end of the base. The drag plate assembly is movably installed in the base and moves driven by the telescopic cylinder. A nail receiving notch is arranged on one side surface of the drag plate assembly. The proximity switch is arranged on one side surface of the base far from the telescopic cylinder. When the telescopic cylinder drives the drag plate assembly to move to the end of the base far from the telescopic cylinder, the proximity switch is communicated with the nail receiving notch to sense whether there is a welding nail in the nail receiving notch. The present utility model intercepts long nails on the nail feeding guide rail through the nail blocking assembly, and senses and detects whether there is a welding nail in the nail receiving notch through the proximity switch, thereby effectively preventing situations such as wrong feeding and miswelding of welding nails, and further improving the welding efficiency. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of an anti-misalignment structure for long and short welding nails provided by an embodiment of the present utility model;

[0017] Figure 2Schematic structural diagram of removing the cover plate and the connector for the anti-misalignment structure of long and short welding studs provided by an embodiment of the present utility model;

[0018] Figure 3 Schematic structural diagram of removing the cover plate, the connector and the left guide plate for the anti-misalignment structure of long and short welding studs provided by an embodiment of the present utility model;

[0019] Figure 4 For Figure 3 The first application scenario cross-sectional view of;

[0020] Figure 5 For Figure 3 The second application scenario cross-sectional view of;

[0021] Figure 6 Schematic structural diagram of the carriage for the anti-misalignment structure of long and short welding studs provided by an embodiment of the present utility model;

[0022] Figure 7 Schematic structural diagram of removing the left guide plate for the anti-misalignment structure of long and short welding studs provided by an embodiment of the present utility model;

[0023] Figure 8 Another schematic structural diagram of removing the cover plate and the connector for the anti-misalignment structure of long and short welding studs provided by an embodiment of the present utility model.

[0024] Among them, the reference numerals in the figure are as follows:

[0025] 100, base; 110, bottom plate; 120, baffle; 130, cover plate; 200, carriage assembly; 210, carriage; 211, nail receiving notch; 2111, first notch; 2112, second notch; 212, proximity switch slot; 220, fork joint; 300, telescopic cylinder; 310, push rod; 400, nail feeding guide; 410, right guide plate; 420, standard welding stud; 430, long welding stud; 440, short welding stud; 450, left guide plate; 500, nail blocking assembly; 510, nail blocking seat; 520, adjusting screw; 600, proximity switch; 700, connector; 710, discharge port; 800, air joint. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] The directional terms mentioned in this utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side surface", etc., are only references to the directions of the attached drawings. Therefore, the directional terms used are for explaining and understanding this utility model, rather than for limiting this utility model. In addition, in the drawings, structures that are similar or identical are denoted by the same reference numerals.

[0028] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0029] It should also be understood that the terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. As used in the specification of this utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0030] It should be further understood that the term "and / or" used in the specification of this utility model and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0031] Please refer to Figures 1-5 and Figure 7 , this utility model provides an anti-misoperation structure for long and short welding studs, including: a base 100, a nail feeding guide rail 400, a telescopic cylinder 300, a drag plate assembly 200, and a proximity switch 600. The nail feeding guide rail 400 is installed on one side of the base 100, and a nail blocking assembly 500 for intercepting long welding studs 430 is provided at the bottom of the nail feeding guide rail 400. The telescopic cylinder 300 is arranged at one end of the base 100. The drag plate assembly 200 is movably installed in the base 100 and moves under the drive of the telescopic cylinder 300. A nail receiving notch 211 is provided on one side surface of the drag plate assembly 200. The proximity switch 600 is arranged on the side surface of the base 100 away from the telescopic cylinder 300. When the telescopic cylinder 300 drives the drag plate assembly 200 to move to the end of the base 100 away from the telescopic cylinder 300, the proximity switch 600 communicates with the nail receiving notch 211 to sense whether there is a welding stud in the nail receiving notch 211.

[0032] In this embodiment, the anti-misalignment structure of the long and short welding studs includes: a base 100, a stud feeding guide rail 400, a telescopic cylinder 300, a drag plate assembly 200, and a proximity switch 600; wherein, the stud feeding guide rail 400 is installed on one side of the base 100, and the stud feeding guide rail 400 is used to receive studs from an external feeder. Since the external feeder may contain studs of different lengths, in order to prevent misfeeding of studs at this time, a stud blocking assembly 500 is provided at the bottom of the stud feeding guide rail 400, and the stud blocking assembly 500 is used to intercept long studs 430 and allow short studs 440 and standard studs 420 to pass through. In addition, the drag plate assembly 200 is movably installed in the base 100 and can move in the base 100 driven by the telescopic cylinder 300; and a stud receiving notch 211 is provided on one side surface of the drag plate assembly 200, and the stud receiving notch 211 penetrates the upper and lower surfaces of the drag plate 210, so that the stud receiving notch 211 is driven by the telescopic cylinder 300 to perform a stud receiving operation from the stud feeding guide rail 400. Additionally, in this embodiment, the proximity switch 600 is installed at a lower position on the side surface of the base 100 away from the telescopic cylinder 300, so as to sense whether there is a stud in the stud receiving notch 211, stop stud feeding, and give an alarm through the proximity switch 600; and the user can also set the position of the proximity switch 600 according to the actual length of the studs, which is not specifically limited here.

[0033] During specific implementation, when the drag plate assembly 200 is in the first position (as Figure 2 shown), at this time the drag plate assembly 200 is in the stud receiving state, and the stud receiving notch 211 is communicated with the outlet of the stud feeding guide rail 400, so that the studs on the stud feeding guide rail 400 slide into the stud receiving notch 211. At the same time, the telescopic cylinder 300 is controlled to drive the drag plate assembly 200 to move to the second position (as Figure 3 shown), at this time the proximity switch 600 on the base 100 is communicated with the stud receiving notch 211, so as to sense whether there is a stud in the stud receiving notch 211 through the proximity switch 600; wherein, when there is a standard stud 420 in the stud receiving notch 211 (as Figure 4 shown), then the proximity switch 600 senses that there is a stud, and a normal stud feeding operation is performed; when there is a short stud 440 (as Figure 5 shown) or an empty stud in the stud receiving notch 211, then the proximity switch 600 senses that there is no stud, and the stud feeding operation is stopped and an alarm is given.

[0034] Therefore, in this embodiment, first, the long studs on the stud feeding guide rail 400 are intercepted by the stud blocking assembly 500, and then the proximity switch 600 is used to sense and detect whether there is a stud in the stud receiving notch 211, so as to effectively prevent situations such as misfeeding and miswelding of studs, and further improve the welding efficiency.

[0035] In one embodiment, as Figures 1-5 and Figure 7 shown, the base 100 further includes a bottom plate 110, a baffle 120 and a cover plate 130, and the baffle 120 and the cover plate 130 are both fixedly installed on the bottom plate 110.

[0036] In this embodiment, the base 100 is formed by combining the bottom plate 110, the baffle 120 and the cover plate 130. Among them, the baffle 120 is fixedly installed on the bottom plate 110; when the telescopic cylinder 300 drives the drag plate assembly 200 to move to the second position (as Figure 3 shown), the nail receiving notch 211 is just restricted by the baffle 120 to form a closed space around, so as to prevent the welding nails from falling and flipping, etc. In addition, a cover plate 130 is also installed on the bottom plate 110, so that the drag plate assembly 200 is restricted between the bottom plate 110 and the baffle 120 by the cover plate 130, and at the same time, it can play a role in improving the aesthetic degree of the base 100.

[0037] In one embodiment, as Figures 1 to 7 shown, the drag plate assembly 200 includes a drag plate 210 and a fork joint 220. The drag plate 210 is movably installed in the base 100, and the fork joint 220 is fixedly arranged at one end of the drag plate 210 close to the telescopic cylinder 300.

[0038] In this embodiment, the nail receiving notch 211 is arranged on one side surface of the drag plate 210. In order to make the telescopic cylinder 300 drive the drag plate 210 to move, the drag plate assembly 200, in addition to including the drag plate 210, also includes a fork joint 220 connected to the drag plate 210; among them, a fork joint 220 through hole for installing the fork joint 220 is arranged at one end of the drag plate 210 close to the telescopic cylinder 300, and the fork joint 220 can be fixedly installed on the through hole of the drag plate 210 by screws in this embodiment. Specifically, when the drag plate assembly 200 is in the first position (as Figure 2 shown), at this time, the drag plate assembly 200 is in the nail receiving state, and the nail receiving notch 211 is communicated with the outlet of the nail feeding guide rail 400, so that the welding nails on the nail feeding guide rail 400 slide into the nail receiving notch 211. At the same time, the telescopic cylinder 300 is controlled to be connected to the fork joint 220, so as to drive the drag plate 210 connected to the fork joint 220 to move through the telescopic cylinder 300, and further drive the nail receiving notch 211 on the drag plate 210 to move to the second position (as Figure 3 shown).

[0039] In one embodiment, asFigures 1 to 7 As shown, a proximity switch slot 212 is provided on the side surface of the carriage 210, and the proximity switch slot 212 communicates with the nail receiving notch 211.

[0040] In this embodiment, in order to make the proximity switch 600 communicate with the nail receiving notch 211, a proximity switch slot 212 for placing the proximity switch 600 is provided on the side surface of the carriage 210. Among them, the proximity switch slot 212 communicates with the nail receiving notch 211, so that when the telescopic cylinder 300 drives the carriage assembly 200 to move to the end of the base 100 away from the telescopic cylinder 300, the proximity switch 600 can pass through the proximity switch slot 212 and then communicate with the nail receiving notch 211, thereby detecting whether there is a welding nail in the nail receiving notch 211 by induction.

[0041] In one embodiment, as Figures 1 to 7 shown, the nail receiving notch 211 includes a first notch 2111 and a second notch 2112. The first notch 2111 communicates with the second notch 2112, and the radius of the first notch 2111 is greater than the radius of the second notch 2112.

[0042] In this embodiment, the nail receiving notch 211 penetrates the upper and lower surfaces of the carriage 210. The nail receiving notch 211 is composed of two notches, namely a first notch 2111 and a second notch 2112. Among them, the radius of the first notch 2111 is larger than the radius of the second notch 2112, and the first notch 2111 communicates with the second notch 2112, which makes a step formed on one side of the inner surface of the nail receiving notch 211, so as to adapt to the welding nail through the step, and then through the first notch 2111 and the second notch 2112 to facilitate the nail receiving and feeding operations of the carriage.

[0043] In one embodiment, as Figures 1 to 7 shown, a push rod 310 is provided on the side of the telescopic cylinder 300 close to the fork joint 220, and the push rod 310 is adapted to the fork joint 220.

[0044] In this embodiment, in order to move the platen 210, a push rod 310 is provided on the telescopic cylinder 300 in this embodiment. Among them, the push rod 310 is on the side close to the fork joint 220 and is adapted to the fork joint 220. Specifically, when the telescopic cylinder 300 moves to the right under the action of air pressure after being ventilated, the push rod 310 provided on the telescopic cylinder 300 also moves to the right, so that the push rod 310 is connected to the fork joint 220, thereby driving the platen 210 connected to the fork joint 220 to move together, and further realizing the movement of the nail receiving notch 211 from the first position (such as Figure 2 shown) to the second position (such as Figure 3 shown).

[0045] In one embodiment, as Figures 1 to 8 shown, the nail feeding guide rail 400 includes a right guide rail plate 410 and a left guide rail plate 450. The right guide rail plate 410 and the left guide rail plate 450 are both installed on one side of the base 100, and the right guide rail plate 410 and the left guide rail plate 450 are arranged at intervals to form a guide rail groove.

[0046] In this embodiment, the nail feeding guide rail 400 is connected to an external feeder to receive the welding nails in the external feeder. Among them, the nail feeding guide rail 400 is mainly composed of a right guide rail plate 410 and a left guide rail plate 450. The right guide rail plate 410 and the left guide rail plate 450 are both installed on one side of the base 100 and are parallel to each other; and there is a certain distance between the right guide rail plate 410 and the left guide rail plate 450 to form a guide rail groove for conveying welding nails. Among them, the distance of the guide rail groove is slightly larger than the diameter of the cylindrical part of the welding nail, but smaller than the width of the head part of the welding nail, so that the welding nails can be conveyed in the same state.

[0047] In one embodiment, as Figures 1 to 7 shown, the nail blocking assembly 500 includes a nail blocking seat 510 and an adjusting screw 520. The nail blocking seat 510 is fixedly arranged between the right guide rail plate 410 and the left guide rail plate 450, and the adjusting screw 520 is fixedly arranged on the nail blocking seat 510.

[0048] In this embodiment, in order to intercept the long welding nails 430 on the nail feeding guide rail 400, a nail blocking seat 510 and an adjusting screw 520 are provided on the nail blocking assembly 500 in this embodiment. Among them, the nail blocking seat 510 is a T-shaped nail blocking seat 510 in this embodiment, so that the nail blocking seat 510 can be clamped and fixed between the right guide rail plate 410 and the left guide rail plate 450; and the nail blocking seat 510 is arranged on one side of the nail feeding guide rail 400 close to the bottom plate 110, that is, before the nail receiving notch 211 receives the welding nails, it plays a role in intercepting the long welding nails 430. In addition, a spiral through hole is provided on the nail blocking seat 510, and the adjusting screw 520 is fixedly arranged on the nail blocking seat 510 through the spiral through hole, and the height of the adjusting screw 520 above the nail blocking seat 510 can be adjusted according to actual needs, so as to intercept the welding nails longer than the standard welding nail 420.

[0049] In one embodiment, as Figures 1 to 7 shown, a connecting head 700 is further included. The connecting head 700 is located above the baffle 120, and the connecting head 700 is on the same horizontal plane as the cover plate 130. An outlet 710 for communicating with an external feeding pipe is provided on the connecting head 700.

[0050] In this embodiment, the anti-misalignment structure of the long and short welding nails further includes a connecting head 700 for locking the external feeding pipe. The connecting head 700 is located above the baffle 120, and the connecting head 700 is on the same horizontal plane as the cover plate 130, and the connecting head 700 is connected to the cover plate 130; in addition, an outlet 710 is provided on the connecting head 700, and the outlet 710 is communicated with the external feeding pipe; and when the telescopic cylinder 300 drives the drag plate assembly 200 to move to the second position (as Figure 3 shown), the nail receiving notch 211 is just restricted by the baffle 120 to form a closed space all around. At this time, the outlet 710 is aligned with this space, and the outlet 710 is located above this space, so that the standard welding nail 420 on the nail receiving notch 211 can be sent into the external feeding pipe through the outlet 710.

[0051] In one embodiment, as Figures 1 to 8 shown, an air joint 800 is further included. The air joint 800 is connected to the bottom plate 110, and the air joint 800 corresponds to the outlet 710.

[0052] In this embodiment, the anti-misalignment structure of the long and short welding studs further includes an air joint 800. Among them, the air joint 800 is connected to the bottom plate 110, and the air joint 800 corresponds to the discharge port 710; and when the telescopic cylinder 300 drives the drag plate assembly 200 to move to the second position (as Figure 3 shown), the stud receiving notch 211 is exactly restricted by the baffle 120 to form a closed space all around. At this time, the discharge port 710 is aligned with this space. The discharge port 710 is located above this space, and the air joint 800 is located below this space. Thus, by introducing compressed air into the air joint 800, the gas passes through the bottom plate 110 and the stud receiving notch 211 in sequence, so as to send the standard welding stud 420 in the stud receiving notch 211 through the discharge port 710 on the connector 700 (such as Figure 1 the movement trajectory shown) into the external feed pipe, thereby realizing the stud feeding operation.

[0053] In summary, the present invention provides an anti-misalignment structure for long and short welding studs, including: a base, a stud feeding guide rail, a telescopic cylinder, a drag plate assembly and a proximity switch. The stud feeding guide rail is installed on one side of the base, and a stud blocking assembly for intercepting long welding studs is provided at the bottom of the stud feeding guide rail. The telescopic cylinder is arranged at one end of the base. The drag plate assembly is movably installed in the base and moves driven by the telescopic cylinder. A stud receiving notch is provided on one side surface of the drag plate assembly. The proximity switch is arranged on the side surface of the base away from the telescopic cylinder. When the telescopic cylinder drives the drag plate assembly to move to the end of the base away from the telescopic cylinder, the proximity switch is communicated with the stud receiving notch to be used for sensing whether there is a welding stud in the stud receiving notch. The present invention intercepts the long studs on the stud feeding guide rail through the stud blocking assembly, and senses and detects whether there is a welding stud in the stud receiving notch through the proximity switch, thereby effectively preventing situations such as wrong feeding and miswelding of welding studs, and further improving the welding efficiency.

[0054] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A long and short welding nail error prevention structure, characterized in that: include: A base, a nail feeding guide rail, a telescopic cylinder, a drag plate assembly and a proximity switch, wherein the nail feeding guide rail is installed on one side of the base, and a nail blocking assembly for intercepting long welding nails is provided at the bottom of the nail feeding guide rail, the telescopic cylinder is provided at one end of the base, the drag plate assembly is movably installed in the base and moves under the drive of the telescopic cylinder, a nail connecting notch is provided on one side surface of the drag plate assembly, and the proximity switch is provided on a side surface of the base away from the telescopic cylinder. When the telescopic cylinder drives the drag plate assembly to move to the end of the base away from the telescopic cylinder, the proximity switch is connected to the nail connecting notch to sense whether there are welding nails in the nail connecting notch.

2. The error-proof structure of long and short welding nails according to claim 1 is characterized in that: The base also includes a bottom plate, a baffle plate and a cover plate, and the baffle plate and the cover plate are both fixedly mounted on the bottom plate.

3. The error-proof structure of long and short welding nails according to claim 2 is characterized in that: The carriage assembly comprises a carriage and a fork-shaped joint. The carriage is movably mounted on the bottom plate, and the fork-shaped joint is fixedly arranged on one end of the carriage close to the telescopic cylinder.

4. The error-proof structure of long and short welding studs according to claim 3 is characterized in that: A proximity switch slot is arranged on the side of the drag plate, and the proximity switch slot is communicated with the connecting nail notch.

5. The error-proof structure of long and short welding studs according to claim 1 is characterized in that: The connecting nail gap includes a first gap and a second gap, the first gap is connected to the second gap, and the radius of the first gap is greater than the radius of the second gap.

6. The error-proof structure of long and short welding nails according to claim 3 is characterized in that: A push rod is arranged on one end of the telescopic cylinder close to the fork-shaped joint, and the push rod is matched with the fork-shaped joint.

7. The error-proof structure of long and short welding studs according to claim 2 is characterized in that: The nail feeding guide rail comprises a right guide rail plate and a left guide rail plate, both of which are installed on one side of the bottom plate, and the right guide rail plate and the left guide rail plate are spaced apart to form a guide rail groove.

8. The error-proof structure of long and short welding studs according to claim 7, characterized in that: The nail blocking assembly includes a nail blocking seat and an adjusting screw. The nail blocking seat is fixedly arranged between the right guide plate and the left guide plate, and the adjusting screw is fixedly arranged on the nail blocking seat.

9. The error-proof structure of long and short welding nails according to claim 2, characterized in that: It also includes a connecting head, which is located above the baffle plate, and the connecting head and the cover plate are on the same horizontal plane, and the connecting head is provided with a discharge port for communicating with an external feeding pipe.

10. The error-proof structure of long and short welding studs according to claim 9, characterized in that: It also includes a gas joint, which is connected to the bottom plate and corresponds to the discharge port.

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