Projection welding nut automatic conveying and positioning and nut supplying device

Abstract

The invention relates to the technical field of projection welding nut automatic conveying and positioning structures, in particular to a projection welding nut automatic conveying, positioning and feeding device which comprises a clamp body, an air cylinder, a transition connecting device, an L-shaped swing block, a scissor type guide rod and a stop rod. A projection welding nut sliding way is arranged in the clamp body, the projection welding nut sliding way is divided into a projection welding nut sliding way input end and a projection welding nut sliding way body, the L-shaped swing block is located above the projection welding nut sliding way input end, the stop lever is located below the projection welding nut sliding way, and the scissor type guide rod is located between the sliding way output end and the stop lever. According to the automatic projection welding device, automatic conveying and positioning structure manufacturability of projection welding nuts are achieved, automatic projection welding of the projection welding nuts is achieved through linkage with other mechanisms, automation of the projection welding nuts is feasible, productivity is liberated, the production takt is improved, the production efficiency is improved, meanwhile, the production cost can be greatly reduced, and the labor intensity of producers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automatic conveying and positioning structures for projection welding nuts, and in particular to an automatic conveying, positioning and nut supplying device for projection welding nuts. Background Art

[0002] In the automated operation of projection welding, projection welding fasteners (nuts) need to be automatically transported to ensure the normal operation of the entire workstation. The prerequisite for realizing automated operation, the stability and accuracy of the automatic transportation and delivery of nuts directly affect the operating efficiency of the workstation.

[0003] Publication number JP2012250265A provides a nut supply device, which can accurately and reliably supply nuts to the positioning pins of joining machines such as spot welding machines. It mainly transports the nuts to the positioning pins one by one through a magnetic piston rod. The detection sensor in the entire structure requires electrical energy, the energization of the electromagnetic coil requires electrical energy, the movement of the piston rod also requires electrical energy, and the drives between them are all operated separately, which inevitably leads to a complex structure of the entire device and high production and operation costs. For this reason, the present invention provides an automatic conveying and positioning device for projection welding nuts to replace the current nut supply device to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic conveying, positioning and nut supplying device for projection welding nuts. Compared with the prior art, the device has a simple and compact structure, is easy to process, and has reliable conveying and positioning. In particular, it solves the processability of the automatic conveying and positioning structure of projection welding nuts, and realizes the automatic projection welding of projection welding nuts through linkage with other mechanisms, making the automation of projection welding nuts feasible, liberating productivity, improving production rhythm, and improving production efficiency. At the same time, it can greatly reduce production costs and reduce the labor intensity of producers.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the present invention include: an automatic conveying and positioning device for projection welding nuts and a nut supply device, including a clamp body, a cylinder, a transition connection device, an L-shaped pendulum block, a scissor-type guide rod and a stop rod; A projection welding nut slideway is provided inside the clamp body, and the projection welding nut slideway is divided into a projection welding nut slideway input end and a projection welding nut slideway, the L-shaped pendulum block is located above the projection welding nut slideway input end, the baffle rod is located below the projection welding nut slideway, and the scissor-type guide rod is located between the slideway output end and the baffle rod; The cylinder is transitionally connected to the clamp body through a bottom connecting plate, and its piston rod is fixedly connected to the transition connecting device, driving the transition connecting device to move back and forth parallel to the slideway; The transition connection device comprises left and right connection plates, a transition connection device base, a waist-shaped groove, a pressure block and a rolling bearing, wherein one side connection plate is fixed to the cylinder piston rod, the rolling bearing is in contact with the outer side of the scissor-type guide rod, and the pressure block is fixed to the left side of the transition connection device base through a first torsion spring base; The L-shaped pendulum block consists of a blocking surface, a connecting surface and a first rotating axis core. The L-shaped pendulum block is connected to the first fixed seat on the top of the clamp body through the first rotating axis core. A first fixed axis is provided at the corner of the blocking surface and the connecting surface, and first fixed axis bearings are installed at both ends of the first fixed axis. A pin is provided at the end of the connecting surface.

[0006] Preferably, the horizontal height h of the waist-shaped groove is ≥ the height H of the projection welding nut, ensuring that the first fixed axis bearing of the L-shaped pendulum block can enter the waist-shaped groove to achieve linkage.

[0007] Preferably, a second fixed shaft is provided at the corner where the pressure block is connected to the first torsion spring base, second fixed shaft bearings are installed at both ends of the second fixed shaft, and a cushion block with an inclined surface is fixedly installed on the upper surface of the clamp body, so that the first fixed shaft bearing lifts the front end of the pressure block along the inclined surface.

[0008] Preferably, retaining springs are installed on both sides of the first fixed shaft bearing to prevent it from shaking left and right. The baffle rod includes a connecting rod, a baffle pin, a second fixed seat, a second rotating axis core and a second torsion spring base. The baffle rod is connected to the second fixed seat at the bottom of the clamp body through the second rotating axis core. The baffle pin is fixed to one end of the connecting rod, and the other end of the connecting rod is fixed to the second torsion spring base.

[0009] Preferably, an adjustment block is provided between the second fixing seat in the baffle rod and the baffle pin, and inclined surfaces are provided on both sides of the upper surface of the adjustment block, so that the height of the baffle pin can be controlled by the swing of the scissor-type guide rod.

[0010] Preferably, a guide rod A surface and a guide rod B surface are provided on one side of the scissor-type guide rod, and guide positioning blocks are provided at the ends of the guide rod A surface and the guide rod B surface, and the guide positioning blocks are provided with guide grooves and retaining edges, and the guide grooves are connected with the projection welding nut slideway when the scissor-type guide rods are closed together; The transition connection device realizes accurate conveying and positioning of the projection welding nut through the rolling of the rolling bearing on the outer side of the scissor-type guide rod and the linkage of the L-shaped swing block and the pressure block.

[0011] Preferably, the cylinder piston rod of the cylinder and the scissor-type guide rod are linked through a transition connection device, and the scissor-type guide rod is transitionally connected to the left and right connecting plates, thereby driving the scissor-type guide rod to swing. The transition connection is that the scissor-type guide rod is connected to the cylinder piston rod through a joint bearing, and the joint bearing allows the guide rod to produce a limited angle of deflection in three-dimensional space.

[0012] Preferably, the scissor-type guide rod also includes equal-height bolts, and the scissor-type guide rod forms a rotatable connection with the clamp body through the equal-height bolts, and the guide rod A surface and the guide rod B surface are symmetrically distributed, and when they are close together, the guide positioning blocks are merged to realize the penetration of the slideway.

[0013] The present invention has at least the following beneficial effects: 1. The present invention has a simple and compact structure, is easy to process, and has reliable conveying and positioning. It especially solves the processability of the automatic conveying and positioning structure of projection welding nuts, and realizes the automatic projection welding of projection welding nuts through linkage with other mechanisms, making the automation of projection welding nuts feasible, liberating productivity, improving production rhythm, and improving production efficiency. At the same time, it can greatly reduce production costs and reduce the labor intensity of producers.

[0014] 2. The present invention can achieve that only one projection welding nut is released to the projection welding nut slideway at a time through the blocking surface of the L-shaped pendulum block and the structure of the latch.

[0015] 3. The present invention drives the transition connection device connected to it as a whole through the extension and retraction of the cylinder piston rod. Through the ingenious linkage between the transition connection device and other components, the projection welding nut at the input end of the projection welding nut slideway is effectively released when the cylinder piston rod is retracted, and the projection welding nut at the input end of the projection welding nut slideway is released and pushed into the specified position of the guide positioning block when the cylinder is extended. The current nut supply device is replaced by a simple and compact device structure.

[0016] 4. One extension and contraction of the cylinder piston rod of the present invention is one cycle. The projection welding nut is limited by the projection welding nut slideway and other structures of the clamping body, so that the stability and accuracy of the projection welding nut being delivered to the positioning end are higher.

[0017] 5. The horizontal height h of the waist groove of the present invention is ≥ the height H of the projection welding nut, which ensures that the first fixed shaft bearing of the L-shaped pendulum block can enter the waist groove to achieve linkage. This design improves the adaptability and flexibility of the device. The pressure block is fixed to the left side of the transition connection device base through the first torsion spring base, and the cooperation with the second fixed shaft and the second fixed shaft bearing, as well as the setting of the inclined pad, enables the pressure block to be flexibly lifted or lowered, realizing precise linkage with the L-shaped pendulum block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a three-dimensional structural schematic diagram of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 2It is a top view of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 3 It is a bottom view of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 4 It is a structural cross-sectional view of an L-shaped swing block of an automatic conveying and positioning device for projection welding nuts of the present invention when entering a waist-shaped groove; Figure 5 It is a partial structural schematic diagram of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 6 It is a structural side view of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 7 It is a schematic diagram of the overall structure of an automatic conveying and positioning device for projection welding nuts of the present invention; Figure 8 The utility model is a schematic diagram of the overall structure of a stopper rod in an automatic conveying and positioning device for projection welding nuts of the present invention.

[0019] In the figure, 1, clamp body; 111, projection welding nut slideway input end; 112, projection welding nut slideway output end; 2, cylinder; 21, cylinder piston rod; 22, bottom connecting plate; 3, transition connection device; 31, left and right connecting plates; 32, transition connection device base; 33, waist groove; 34, pressure block; 35, rolling bearing; 341, first torsion spring base; 342, second fixed shaft; 343, second fixed shaft bearing; 344, cushion block; 4. L-shaped swing block; 41. blocking surface; 42. connecting surface; 43. latch; 44. first fixed seat; 45. first rotating shaft core; 46. first fixed shaft; 47. first fixed shaft bearing; 48. retaining spring; 5. Scissor-type guide rod; 51. Guide rod A surface; 52. Guide rod B surface; 53. Guide positioning block; 54. Equal height bolts; 531. Guide groove; 532. Retaining edge; 6. Stop rod; 61. Connecting rod; 62. Stop pin; 63. Second fixed seat; 64. Second rotating shaft core; 65. Second torsion spring base; 66. Adjustment block. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] like Figure 1- Figure 8 As shown, the automatic conveying and positioning device for projection welding nuts and the nut supply device provided in this embodiment include a clamp body 1, a cylinder 2, a transition connection device 3, an L-shaped pendulum block 4, a scissor-type guide rod 5 and a stop rod 6. Specifically, a projection welding nut slideway is provided inside the clamp body 1, and the projection welding nut slideway is divided into a projection welding nut slideway input end 111 and a projection welding nut slideway output end 112, the L-shaped pendulum block 4 is located above the projection welding nut slideway input end 111, the stop rod 6 is located below the projection welding nut slideway output end 112, and the scissor-type guide rod 5 is located between the slideway output end and the stop rod 6; a projection welding nut slideway is provided inside the clamp body 1, and this design enables the projection welding nut to slide smoothly along a predetermined path, thereby ensuring the stability and accuracy of the conveying process. The design of the slideway takes into account the size and shape of the projection welding nut, so that the nut can maintain a correct posture in the slideway, avoiding jamming or falling due to incorrect posture.

[0023] It should be noted that the cylinder 2 is transitionally connected to the clamp body 1 through the bottom connecting plate 22, and its cylinder piston rod 21 is fixedly connected to the transition connecting device 3, driving the transition connecting device 3 to move back and forth in parallel above the slide; the transition connecting device 3 includes left and right connecting plates 31, a transition connecting device base 32, a waist-shaped groove 33, a pressure block 34 and a rolling bearing 35, wherein one side connecting plate 31 is fixed to the cylinder piston rod 21, the rolling bearing 35 is in contact with the outer side of the scissor-type guide rod 5, and the pressure block 34 is fixed to the left side of the transition connecting device base 32 through the first torsion spring base 341; the cylinder 2 is transitionally connected to the clamp body 1 through the bottom connecting plate 22, and its cylinder piston rod 21 is fixedly connected to the transition connecting device 3. This design realizes the smooth transmission of cylinder power to the transition connecting device, drives the transition connecting device to move back and forth in parallel above the slide, and improves the degree of automation of the device. The transition connection device 3 includes left and right connecting plates 31, a transition connection device base 32, a waist-shaped groove 33 and other components. It has a compact structure and clear functions. Through the drive of the cylinder, it can accurately control the movements of the L-shaped pendulum block 4 and the scissor-type guide rod 5. Among them, the L-shaped pendulum block 4 is composed of a blocking surface 41, a connecting surface 42 and a first rotating shaft core 45. The L-shaped pendulum block 4 is connected to the first fixed seat 44 at the top of the clamp body 1 through the first rotating shaft core 45. A first fixed shaft 46 is provided at the corner of the blocking surface 41 and the connecting surface 42, and first fixed shaft bearings 47 are installed at both ends of the first fixed shaft 46. A latch 43 is provided at the end of the connecting surface 42. The L-shaped pendulum block 4 is composed of a blocking surface 41, a connecting surface 42 and a first rotating shaft core 45. It is connected to the first fixed seat 44 at the top of the clamp body 1 through the first rotating shaft core 45, so as to realize the flexible rotation of the pendulum block. The design of the blocking surface 41 and the connecting surface 42 enables the L-shaped pendulum block 4 to block or release the projection welding nut at a specific position, ensuring the accurate positioning of the nut. In addition, the design of the first fixed shaft 46 and the first fixed shaft bearing 47 , as well as the limiting effect of the retaining spring 48 , improve the stability and durability of the L-shaped pendulum block 4 .

[0024] It should be noted that the horizontal height h of the waist-shaped groove 33 ≥ the height H of the projection welding nut, ensuring that the first fixed shaft bearing 47 of the L-shaped pendulum block 4 can enter the waist-shaped groove 33 to achieve linkage. The horizontal height h of the waist-shaped groove 33 ≥ the height H of the projection welding nut ensures that the first fixed shaft bearing 47 of the L-shaped pendulum block 4 can enter the waist-shaped groove 33 to achieve linkage. This design improves the adaptability and flexibility of the device. The pressure block 34 is fixed to the left side of the transition connection device base 32 through the first torsion spring base 341, and cooperates with the second fixed shaft 342 and the second fixed shaft bearing 343, as well as the setting of the beveled pad 344, so that the pressure block 34 can be flexibly lifted or lowered, achieving precise linkage with the L-shaped pendulum block 4.

[0025] In this embodiment, a second fixed shaft 342 is provided at the corner where the pressure block 34 is connected to the first torsion spring base 341, and second fixed shaft bearings 343 are installed at both ends of the second fixed shaft 342. A cushion block 344 with an inclined surface is fixedly installed on the upper surface of the clamp body 1, so that the first fixed shaft bearing 47 lifts the front end of the pressure block 34 along the inclined surface.

[0026] Among them, retaining springs 48 are installed on both sides of the first fixed shaft bearing 47 to prevent it from shaking left and right. The blocking rod 6 includes a connecting rod 61, a blocking pin 62, a second fixed seat 63, a second rotating axis core 64 and a second torsion spring base 65. The blocking rod 6 is connected to the second fixed seat 63 at the bottom of the clamp body 1 through the second rotating axis core 64. The blocking pin 62 is fixed to one end of the connecting rod 61, and the other end of the connecting rod 61 is fixed to the second torsion spring base 65.

[0027] In this embodiment, an adjustment block 66 is provided between the second fixed seat 63 in the blocking rod 6 and the blocking pin 62. The upper surface of the adjustment block 66 is provided with inclined surfaces on both sides, and the height of the blocking pin 62 is controlled by the swing of the scissor-type guide rod 5. The blocking rod 6 is connected to the second fixed seat 63 at the bottom of the clamp body 1 through the second rotating shaft core 64. The blocking pin 62 is fixed to one end of the connecting rod 61, and the other end of the connecting rod 61 is fixed to the second torsion spring base 65. This design enables the blocking rod 6 to block or release the projection welding nut at a specific position, ensuring the smooth output of the nut. The setting of the adjustment block 66 and the design of the inclined surfaces on both sides of its upper surface enable the swing of the scissor-type guide rod 5 to accurately control the height of the blocking pin 62, thereby improving the adjustability and accuracy of the device. Specifically, a guide rod A surface 51 and a guide rod B surface 52 are provided on one side of the scissor-type guide rod 5, and a guide positioning block 53 is provided at the end of the guide rod A surface 51 and the guide rod B surface 52, and the guide positioning block 53 is provided with a guide groove 531 and a retaining edge 532. When the scissor-type guide rods 5 are close together, the guide groove 531 is connected with the input end 111 of the projection welding nut slideway; the cylinder piston rod 21 of the cylinder 2 and the scissor-type guide rod 5 are linked through the transition connection device 3, and the scissor-type guide rod 5 is transitionally connected with the left and right connecting plates 31, thereby driving the scissor-type guide rod 5 to swing, and the transition connection is that the scissor-type guide rod 5 is connected to the cylinder piston rod 21 through a joint bearing, and the joint bearing allows the guide rod to generate a limited angle of deflection in three-dimensional space. The scissor-type guide rod 5 also includes an equal height bolt 54, and the scissor-type guide rod 5 forms a rotatable connection with the clamp body 1 through the equal height bolt 54, and the guide rod A surface 51 and the guide rod B surface 52 are symmetrically distributed, and the guide positioning blocks 53 are combined to realize the slideway connection when they are close together. The transition connection device 3 realizes the precise conveying and positioning of the projection welding nut through the rolling of the rolling bearing 35 on the outer side of the scissor-type guide rod 5 and the linkage of the L-shaped pendulum block 4 and the pressure block 34.

[0028] It is worth mentioning that one side of the scissor-type guide rod 5 is provided with a guide rod A surface 51 and a guide rod B surface 52, and a guide positioning block 53 is provided at the end. This design enables the guide rod to be connected with the projection welding nut slideway when it is close together, ensuring the smooth transportation of the nut. The setting of the guide groove 531 and the retaining edge 532 improves the guiding and positioning of the guide rod. The design of the equal height bolt 54 enables the scissor-type guide rod to form a rotatable connection with the clamp body 1, improving the stability and durability of the device. It should be noted that the attached Figure 6 A, B, and C in the figure are projection welding nut a, projection welding nut b, and projection welding nut c respectively.

[0029] like Figure 1 - Figure 8 As shown, the principles of the projection welding nut automatic conveying, positioning device and nut supply device provided in this embodiment are as follows: First, in the initial state, the blocking surface 41 of the L-shaped pendulum block 4 limits the projection welding nut slideway input end 111, and the blocking pin 62 is kept at a low position under the action of the torsion spring to prevent the projection welding nut slideway output end 112 from falling; Then the cylinder retracts, the projection welding nut enters, the cylinder piston rod 21 retracts, driving the transition connection device 3 to move to the left, the rolling bearing 35 rolls on the outer side of the scissor-type guide rod 5, the guide rod 5 swings together, the first fixed axis bearing 47 of the L-shaped pendulum block 4 enters the waist groove 33, the pendulum block 4 rotates around the first rotating axis 45, the blocking surface 41 is lifted, and the projection welding nut enters the slideway; Then the front end of the pressing block 34 is lifted by the cushion block 344 with the inclined surface, and the pressing block 34 rotates around the second fixed axis 342, pushing the output end 112 of the projection welding nut slideway to move, and the stop pin 62 is lifted up under the action of the swing of the scissor-type guide rod 5 and the inclined surface of the adjustment block 66, allowing the projection welding nut to pass; Then the cylinder extends, the projection welding nut is positioned, the cylinder piston rod 21 extends, driving the transition connection device 3 to move to the right, the rolling bearing 35 rolls to make the scissor-type guide rod 5 swing apart, and the oblique surface of the adjustment block 66 drives the stop pin 62 to press down, accurately positioning the projection welding nut slideway output end 112; Finally, the blocking surface 41 of the L-shaped pendulum block 4 is reset to prepare for the next round of conveying.

[0030] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

Claims

1. A projection welding nut automatic conveying and positioning and nut supply device, characterized in that: It comprises a clamping body (1), a cylinder (2), a transition connection device (3), an L-shaped swing block (4), a scissor-type guide rod (5) and a stop rod (6); A projection welding nut slideway is provided inside the clamp body (1), the projection welding nut slideway is divided into a projection welding nut slideway input end (111) and a projection welding nut slideway output end (112), the L-shaped pendulum block (4) is located above the projection welding nut slideway input end (111), the blocking rod (6) is located below the projection welding nut slideway output end (112), and the scissor-type guide rod (5) is located between the slideway output end and the blocking rod (6); The cylinder (2) is transitionally connected to the clamp body (1) via a bottom connecting plate (22), and its piston rod (21) is fixedly connected to the transition connecting device (3), driving the transition connecting device (3) to move back and forth in parallel above the slideway; The transition connection device (3) comprises left and right connection plates (31), a transition connection device base (32), a waist-shaped groove (33), a pressure block (34) and a rolling bearing (35), wherein one side connection plate (31) is fixed to the cylinder piston rod (21), the rolling bearing (35) is in contact with the outer side surface of the scissor-type guide rod (5), and the pressure block (34) is fixed to the left side of the transition connection device base (32) via a first torsion spring base (341); The L-shaped pendulum block (4) is composed of a blocking surface (41), a connecting surface (42) and a first rotating shaft core (45); the L-shaped pendulum block (4) is connected to a first fixed seat (44) at the top of the clamp body (1) via the first rotating shaft core (45); a first fixed shaft (46) is provided at a corner between the blocking surface (41) and the connecting surface (42); first fixed shaft bearings (47) are installed at both ends of the first fixed shaft (46); and a latch (43) is provided at the end of the connecting surface (42).

2. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 1, characterized in that: The horizontal height h of the waist-shaped groove (33) is greater than or equal to the height H of the projection welding nut, thereby ensuring that the first fixed shaft bearing (47) of the L-shaped swing block (4) can enter the waist-shaped groove (33) to achieve linkage.

3. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 1, characterized in that: A second fixed shaft (342) is provided at the corner where the pressing block (34) is connected to the first torsion spring base (341), and second fixed shaft bearings (343) are installed at both ends of the second fixed shaft (342). A cushion block (344) with an inclined surface is fixedly installed on the upper surface of the clamp body (1), so that the first fixed shaft bearing (47) lifts the front end of the pressing block (34) along the inclined surface.

4. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 1, characterized in that: The first fixed shaft bearing (47) is provided with retaining springs (48) on both sides to prevent it from shaking left and right. The retaining rod (6) comprises a connecting rod (61), a retaining pin (62), a second fixed seat (63), a second rotating shaft core (64) and a second torsion spring base (65). The retaining rod (6) is connected to the second fixed seat (63) at the bottom of the clamp body (1) through the second rotating shaft core (64). The retaining pin (62) is fixed to one end of the connecting rod (61), and the other end of the connecting rod (61) is fixed to the second torsion spring base (65).

5. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 4, characterized in that: An adjustment block (66) is provided between the second fixing seat (63) in the stop rod (6) and the stop pin (62), and inclined surfaces are provided on both sides of the upper surface of the adjustment block (66). The height of the stop pin (62) is controlled by the swing of the scissor-type guide rod (5).

6. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 1, characterized in that: A guide rod A surface (51) and a guide rod B surface (52) are provided on one side of the scissor-type guide rod (5), and guide positioning blocks (53) are provided at the ends of the guide rod A surface (51) and the guide rod B surface (52), and the guide positioning blocks (53) are provided with guide grooves (531) and retaining edges (532), and when the scissor-type guide rods (5) are closed together, the guide grooves (531) are connected to the projection welding nut slideway (111); The transition connection device (3) achieves accurate conveying and positioning of the projection welding nut through the rolling of the rolling bearing (35) on the outer side of the scissor-type guide rod (5) and the linkage of the L-shaped swing block (4) and the pressure block (34).

7. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 6, characterized in that: The cylinder piston rod (21) of the cylinder (2) and the scissor-type guide rod (5) are linked via a transition connection device (3); the scissor-type guide rod (5) is transitionally connected to the left and right connecting plates (31), thereby driving the scissor-type guide rod (5) to swing; the transition connection is that the scissor-type guide rod (5) is connected to the cylinder piston rod (21) via a joint bearing; the joint bearing allows the guide rod to generate a deflection of a limited angle in a three-dimensional space.

8. The device for automatically conveying, positioning and supplying projection welding nuts according to claim 7, characterized in that: The scissor-type guide rod (5) further comprises equal-height bolts (54), and the scissor-type guide rod (5) is rotatably connected to the clamp body (1) via the equal-height bolts (54), and the guide rod A surface (51) and the guide rod B surface (52) are symmetrically distributed, and when they are brought together, the guide positioning blocks (53) are combined to realize the through-link of the slideway.

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