Automatic assembly device for aluminum alloy wheel hub decorative nails

Abstract

An automatic assembly device for decorative nails for aluminum alloy wheel hubs relates to the field of aluminum alloy wheel hub processing. The device comprises an upper pressing plate and a nail supply connecting plate. The nail supply connecting plate comprises a positioning connecting plate that cooperates with the wheel hub and an automatic nail supply plate. The positioning connecting plate has a center positioning cone and a positioning pin on its underside. The automatic nail supply plate has a nail storage groove on its upper side, a nail supply ring on its outer side, a nail release notch radially connected to the nail storage groove on its upper side, a driving arm on its inner side of the nail supply ring, and the driving arm extends into the nail storage groove. The nail storage groove has a nail mounting hole on its front bottom surface. The upper pressing plate has a nail pressing rod that can press the decorative nail out of the nail mounting hole from top to bottom. The present invention has the advantages of high assembly efficiency and low labor intensity.

Description

Technical Field

[0001] The invention relates to the field of aluminum alloy wheel hub processing, and in particular to an automatic assembly device for aluminum alloy wheel hub decorative nails. Background Art

[0002] As we all know, decorative rivets on automotive aluminum alloy wheels are a decorative feature that enhances the wheel's appearance and promotes personalized design. For example, a utility model patent, CN201520294332.5, published on August 19, 2015, describes a decorative rivet for automotive aluminum alloy wheels. While these rivets enhance the wheel's appearance, assembly requires manual pressing or hammering with a rubber hammer after placing the rivet into the rivet's mounting hole. Depending on the wheel type, several to dozens of rivets may be required, resulting in low assembly efficiency and high labor intensity. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art and to provide an automatic assembly device for aluminum alloy wheel hub decorative nails with high assembly efficiency and low labor intensity.

[0004] The technical solution adopted by the present invention to solve the above-mentioned deficiencies in the prior art is:

[0005] The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels.

[0006] The present invention is further improved by providing a hub locating seat that mates with the upper pressure plate. A lower positioning cone is provided on the upper side of the hub locating seat, which engages with the hub center hole (axle hole). At least one lower positioning pin is provided on the upper side of the hub locating seat, adjacent to the lower positioning cone, which engages with the hub bolt hole. After the hub to be mounted with the decorative nail is positioned on the hub locating seat via the hub center hole and the hub bolt holes, the nail pressing rod on the upper pressure plate aligns with the decorative nail mounting hole on the hub.

[0007] The present invention further improves upon this concept by providing a sliding nail plate within the nail storage slot. The plate includes a vertically extending arrangement slot, which contains at least three nail holders. The nail holders include a stabilizing ring and retaining springs. The inner diameter of the stabilizing ring is 1.01-1.1 times the diameter of the decorative nail cap. The retaining springs are positioned beneath the stabilizing ring to retain the underside of the decorative nail cap. The mounting holes are located in front of or directly below the frontmost nail holder. The retaining springs are formed by a circular array of at least three triangular springs arranged on the underside of the stabilizing ring. The central portion of the retaining springs forms the decorative nail body hole. Once a decorative nail is placed within the nail holder, it is held vertically upright by the stabilizing ring and retaining springs. When subjected to downward pressure, the decorative nail overcomes the retaining force of the retaining springs and passes downward through the nail plate, resulting in a more stable and smoother assembly process. The pusher arm, located at the rear of the nail plate, propels the plate forward.

[0008] The present invention is further improved, that is, a rectangular positioning slot is provided on the bottom surface of the nail storage slot on the front side of the nail hole, the front side surface of the positioning slot is a guide sliding surface inclined forward from bottom to top, and the rear side surface of the positioning slot is a vertical positioning surface; a positioning protrusion is provided on the lower side surface of the nail arrangement plate in front of the arrangement groove, the front side surface of the positioning protrusion is a lifting sliding surface inclined forward from bottom to top, and the rear side surface of the positioning protrusion is a protrusion positioning surface that cooperates with the positioning surface; a positioning spring piece that cooperates with the side surface of the nail arrangement plate is provided on the side wall of the nail storage slot opposite to the positioning slot. When the nail strip slides forward in the nail storage slot, the front end of the nail strip is tilted upward due to the presence of the positioning protrusion. When the front end of the nail strip moves to the positioning slot, the positioning spring generates downward pressure on the front end of the nail strip. The nail strip continues to move forward until the positioning protrusion is aligned with the positioning slot. Under the action of the positioning spring, the positioning protrusion quickly snaps downward into the positioning slot. The guide slide and the lifting slide cooperate to make the positioning surface of the protrusion close to the positioning surface on the rear side of the positioning slot. At this time, a decorative nail is located directly above the nail installation hole and opposite to the decorative nail installation hole on the wheel hub. When the nail strip is pushed forward, the guide slide and the lifting slide cooperate to push the front end of the nail strip upward. The front end of the nail strip overcomes the pressure of the positioning spring and moves forward and upward until the positioning protrusion is out of the positioning slot, and the next decorative nail can be installed.

[0009] The nail storage slot described in the present invention is provided with a spring clip mounting slot on the side wall. The positioning spring clip is arc-shaped, with one end of the positioning spring clip fixed in the spring clip mounting slot and the other end located in the nail storage slot outside the spring clip mounting slot. When the other end of the positioning spring clip is subjected to upward pressure, it bends and deforms, allowing the other end of the positioning spring clip to be bent and pressed into the spring clip mounting slot. The front end of the nail strip is provided with a guide slope that cooperates with the positioning spring clip and slopes backward from bottom to top. The lower end of the positioning spring clip slides along the guide slope to the upper side of the nail strip plate, applying downward pressure to the nail strip plate.

[0010] The present invention further improves the nail storage slot, comprising a nail cap chute and a nail body chute. The nail body chute is located at the lower center of the nail cap chute. The decorative nail can be stably installed vertically in the nail storage slot, with the nail cap located in the nail cap chute and the nail body located in the nail body chute. The width of the nail cap chute is 1.01-1.1 times the diameter of the nail cap, and the width of the nail body chute is 1.01-1.1 times the diameter of the nail body. This prevents the decorative nail from tilting, and provides a more stable forward push.

[0011] The present invention further improves upon this by providing a limit cover plate on the automatic nail feed tray. The limit cover plate has a pressure rod sliding hole located opposite the nail hole. A pressure rod can pass through the pressure rod sliding hole to force the decorative nails downward from the nail hole. After the decorative nails are sequentially arranged and loaded into the nail storage slots from front to back, the limit cover plate is installed on the automatic nail feed tray above the nail storage slots. The lower side of the limit cover plate can slide relative to or in close proximity with the upper side of the nail cap of the decorative nail. For example, the distance between the lower side of the limit cover plate and the upper side of the nail cap of the decorative nail is 0.1-2 mm, preventing the decorative nails from moving upward and ensuring more stable operation.

[0012] The present invention further improves upon this, featuring a nail-binding hole positioned on the bottom surface of the front end of the nail storage slot. A nail-stabilizing seat is located within the hole. The nail-stabilizing seat comprises an upper positioning ring and a lower retaining spring. The upper side of the upper positioning ring is coplanar with the lower side of the nail cap slot. The lower retaining spring is positioned below the upper positioning ring and is used to retain the lower side of the decorative nail cap. The retaining seat has an opening for the decorative nail on the side opposite the nail storage slot. The width of the decorative nail opening is no less than the width of the nail body slot, and the two are diametrically connected. The inner diameter of the upper positioning ring is 1.01-1.2 times the diameter of the decorative nail cap. The lower retaining spring is formed by a circular array of at least three triangular retaining springs arranged on the underside of the upper positioning ring. The center of the lower retaining spring forms a hole for the decorative nail body. When the decorative nail is pushed forward, it slides forward within the nail storage slot. The body of the frontmost decorative nail slides through the decorative nail opening and into the nail-stabilizing seat, whereupon the nail cap of the decorative nail falls from the upper side of the upper positioning ring.

[0013] The nail feeding and shifting ring described in the present invention is provided with a driving handle on the outside. The nail feeding and shifting ring can be rotated manually or automatically by using a cylinder or a lead screw drive.

[0014] When the present invention is used, the pressing power source is connected to the pressure nail loading seat, the outer side of the nail supply connecting plate is connected to the lifting device, the aluminum alloy wheel hub is fixedly placed on the lower side of the nail supply connecting plate, the decorative nail installation hole on the aluminum alloy wheel hub is aligned with the nail hole and the pressure nail rod, and the nail supply connecting plate is fixedly connected to the aluminum alloy wheel hub. The nail storage groove is equipped with at least two decorative nails arranged in a front-to-back direction. The nail supply shifting ring is rotated, and the nail supply shifting ring drives the shifting arm to move forward in the nail storage groove, which can push the decorative nail in the nail storage groove forward. When a decorative nail is located in the nail hole, the pressing power source is activated, and the upper pressing plate is pressed downward. The lower end of the pressure nail rod is pressed on the upper side of the decorative nail, and the decorative nail is pressed downward from the nail hole and pressed into the decorative nail installation hole of the aluminum alloy wheel hub. The pressing power source moves in the opposite direction, driving the upper pressing plate to move upward, driving the pressure nail rod to disengage from the nail hole and reset, and a circle of decorative nails on the wheel hub is installed at one time. Lift the nail supply connection plate upward, remove the aluminum alloy wheel hub that has been installed with decorative nails, and securely place the next aluminum alloy wheel hub to be installed with decorative nails on the lower side of the nail supply connection plate. Repeat the above assembly operation until the decorative nails in the nail storage slot are used up, and then refill the nail storage slot to continue working. The present invention has the advantages of simple structure, easy use, high assembly efficiency, and low labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the upper pressing plate;

[0017] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure after removing the upper pressing plate and the wheel hub positioning seat;

[0018] Figure 4 yes Figure 3 A local enlarged view of point A;

[0019] Figure 5 yes Figure 3 A partial enlarged view of point B;

[0020] Figure 6 yes Figure 3 A schematic diagram of a three-dimensional structure from another perspective;

[0021] Figure 7 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle row nail plate;

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the pushing arm and the nail feeding and pushing ring in the present invention.

[0023] Figure 9 It is an exploded schematic diagram of the second structure of the present invention;

[0024] Figure 10 yes Figure 9 Schematic diagram of the three-dimensional structure after removing the upper pressing plate, limiting cover plate and wheel hub positioning seat;

[0025] Figure 11 yes Figure 10 A partial enlarged view of point C;

[0026] Figure 12 yes Figure 10 Schematic diagram of the three-dimensional structure from another perspective.

[0027] Figure 13 yes Figure 9 Schematic diagram of the three-dimensional structure of the middle limit cover;

[0028] Figure 14 yes Figure 9 Schematic diagram of the three-dimensional structure of the center stabilizing nail seat; DETAILED DESCRIPTION

[0029] Example 1

[0030] like Figures 1-8The automatic assembly device for decorative nails of aluminum alloy wheel hub shown in the figure includes a circular upper pressing plate 2 and a nail supply connecting plate. A nail loading seat 1 is provided at the middle of the upper side of the upper pressing plate 2. The nail supply connecting plate includes a positioning connecting plate 3 and an automatic nail supply plate 11 that cooperate with the wheel hub. The positioning connecting plate 3 is in the shape of a circular disc. A center positioning round table 22 that is plugged into the center hole (shaft hole) of the wheel hub is provided in the center of the lower side of the positioning connecting plate 3. A positioning pin 6 that is plugged into the bolt hole of the wheel hub is provided on the lower side of the positioning connecting plate 3 on one side of the center positioning round table 22. The automatic nail supply plate 11 is in the shape of a circular ring. The automatic nail supply plate 11, the positioning connecting plate 3 and the center positioning round table 22 are coaxial, that is, the axes coincide. It can be seen from the figure that the positioning connecting plate 3 and the automatic nail supply plate 11 are fixedly connected via the connecting spoke 12, and can also be connected via an annular plate or made into one piece. The upper side of the automatic nail feeding disk 11 is provided with an arc-shaped nail storage groove 15 coaxial with the central positioning cone 22. As can be seen from the figure, the arc-shaped nail storage groove is a circular slide 15 provided on the upper side of the positioning connection disk. The slide 15 is a stepped slide that runs vertically through the upper and lower parts. The slide 15 is evenly distributed with five partitions, which divide the circular slide 15 into five arc-shaped nail storage grooves. The nail storage groove is provided with a strip-shaped nail arrangement plate 13 that can slide back and forth. The nail arrangement plate 13 is provided with an arrangement groove 26 that runs vertically through the upper and lower parts. Four nail seats are provided in the arrangement groove 26 in the front-to-back direction. The nail seats include a stabilizing ring 18 and a retaining spring 19. The inner diameter of the stabilizing ring 18 is 1.1 times the diameter of the nail cap of the decorative nail 21. The retaining spring 19 is provided on the lower side of the stabilizing ring to retain the lower side of the nail cap of the decorative nail. As can be seen from the figure, the retaining spring piece 19 is formed by a circular array of 6 triangular spring pieces arranged on the lower side of the stabilizing ring. The middle part of the retaining spring piece 19 is the nail body hole of the decorative nail (surrounded by the lower ends of the 6 spring pieces), and the nail body hole of the decorative nail is surrounded by the lower ends of the 6 spring pieces. After the decorative nail 21 is placed in the nail seat, the nail cap is located in the stabilizing ring, and the nail body is located in the nail body hole. Under the action of the stabilizing ring and the retaining spring piece, it remains vertical up and down. When subjected to downward pressure, the decorative nail overcomes the supporting force of the retaining spring piece and passes downward through the nail plate. The decorative nail is more stable and the assembly process is smoother. The automatic nail feed tray 11 is provided with a coaxial, relatively rotatable nail feed ring 5 on its outer side. A nail feed notch radially connected to the nail feed notch is provided on the sidewall of the automatic nail feed tray 11. Inside the nail feed ring 5, a push arm 17 is provided, which is freely slidable within the push notch. The push arm 17 is radially arranged along the nail feed ring 5 and extends into the nail feed notch, freely slidable back and forth. The push arm 17 is located at the rear side of the nail plate 13 and can push the nail plate 13 forward. The bottom surface of the nail feed notch is provided with nail holes 16 extending vertically therethrough. In this embodiment, there are ten nail holes 16 on the bottom surface of the nail feed notch. The diameter of each nail hole 16 is 1.1 times the diameter of the head of a decorative nail 21. A corresponding nail pressing rod 4 is provided on the underside of the upper pressing plate 2, opposite each nail hole 16. The nail pressing rod 4 can press the decorative nail 21 downward from the nail hole 16.A rectangular positioning slot 14 is provided on the bottom surface of the nail storage groove on the front side of the nail hole 16, and the front side surface of the positioning slot 14 is a guide slide inclined forward from bottom to top, and the rear side surface of the positioning slot 14 is a vertical positioning surface; a rectangular positioning protrusion 23 is provided on the lower side surface of the nail row plate 13 in front of the arrangement groove 26, and the front side surface of the positioning protrusion 23 is a lifting slide inclined forward from bottom to top and coordinated with the guide slide, and the rear side surface of the positioning protrusion 23 is a protrusion positioning surface that cooperates with the positioning surface, and is a vertical positioning surface; the side walls on both sides of the nail storage groove opposite to the positioning slot are provided with positioning springs 20 that cooperate with the side surface of the nail row plate. As the nail strip 13 slides forward within the nail storage slot, the front end of the nail strip 13 tilts upward due to the presence of the positioning protrusion 23. When the front end of the nail strip 13 reaches the positioning slot 14 (positioning spring), the positioning spring exerts downward pressure on the front end of the nail strip 13. The nail strip 13 continues to move forward until the positioning protrusion is aligned with the positioning slot. Under the force of the positioning spring, the positioning protrusion quickly snaps downward into the positioning slot. The guide slide and the lifting slide cooperate to make the positioning surface of the protrusion close to the positioning surface on the rear side of the positioning slot. At this time, a decorative nail is located directly above the nail installation hole and opposite the decorative nail installation hole on the wheel hub. When the nail strip is pushed forward, the guide slide and the lifting slide cooperate to lift the front end of the nail strip upward. The front end of the nail strip overcomes the pressure of the positioning spring and moves forward and upward until the positioning protrusion is out of the positioning slot, allowing the next decorative nail to be installed. The side walls on both sides of the nail storage groove are provided with spring clip mounting grooves. The positioning spring clip is arc-shaped, with one end of the positioning spring clip fixed in the spring clip mounting groove and the other end located in the nail storage groove outside the spring clip mounting groove. When the other end of the positioning spring clip is subjected to upward pressure, it bends and deforms, and the other end of the positioning spring clip can be bent and pressed into the spring clip mounting groove. The front end surface of the nail plate is provided with a guide slope that is inclined from bottom to top and backwards and cooperates with the positioning spring clip. The lower end of the positioning spring clip can slide to the upper side of the nail plate via the guide slope to provide downward pressure for the nail plate. In the present invention, the direction of clockwise rotation is forward.

[0031] In this embodiment, a hub locating seat 9 is provided, which mates with the upper pressure plate. A lower positioning platform 8 is provided on the upper side of the hub locating seat 9, which engages with the hub center hole (axle hole). A lower positioning pin 7 is provided on the upper side of the hub locating seat 9, on one side of the lower positioning platform 8, which engages with the hub bolt hole. After the hub to be mounted with the decorative nail is positioned on the hub locating seat through the hub center hole and the hub bolt holes, the nail pressing rod on the upper pressure plate aligns with the decorative nail mounting hole on the hub.

[0032] During use, the upper pressing plate is connected to the first lifting device via the pressure nail loading seat, and the outer side of the automatic nail feeding plate of the nail feeding connecting plate is connected to the second lifting device. The wheel hub positioning seat is set on the lower side of the nail feeding connecting plate. The second lifting device can be a manual lifting device or a transmission device driven by a lifting robot, a cylinder, or a motor. The second lifting device can drive the nail feeding connecting plate to move up and down between the upper pressing plate and the wheel hub positioning seat. The nailing hole on the automatic nail feeding plate is opposite to the lower end of the pressure nail rod. The aluminum alloy wheel hub is installed on the wheel hub positioning seat. The second lifting device drives the positioning connecting plate downward, so that the center positioning cone is inserted into the center hole of the wheel hub and the positioning pin is inserted into the wheel hub bolt hole, thereby positioning the positioning connecting plate and the aluminum alloy wheel hub. At this time, the decorative nail installation hole on the aluminum alloy wheel hub is opposite to the nailing hole (nail body hole on the stabilizing ring) and the lower end of the pressure nail rod. A decorative nail is loaded into each nail holder in the nail storage slot, with the push arm located at the rear of the nail plate. The nail supply push ring is rotated, which drives the push arm forward in the nail storage slot, pushing the nail plate in the nail storage slot forward, driving the nail holder and decorative nail forward. The frontmost decorative nail on a nail plate is positioned above the nail installation hole. The upper pressing plate is pressed downward, and the lower end of the nail pressing rod presses on the upper side of the decorative nail, pushing the decorative nail downward from the nail holder and into the decorative nail installation hole of the aluminum alloy wheel hub. The upper pressing plate is lifted upward, and the upper pressing plate moves upward and resets, completing the installation of a circle of decorative nails on the wheel hub at once. The second lifting device lifts the nail supply connecting plate upward, separating the positioning connecting plate from the aluminum alloy wheel hub. The aluminum alloy wheel hub with the decorative nails installed is then removed, and the next aluminum alloy wheel hub to be assembled with decorative nails is installed on the wheel hub positioning seat. The above assembly operation is repeated until all the decorative nails in the nail storage slot are used up. When all the decorative nails on the nail strip are used up, the nail strip is pried upward, and the nail strip overcomes the pressure of the positioning spring and moves upward until the positioning protrusion is disengaged from the positioning slot. The nail strip is then moved back to its original position, and decorative nails are added to the nail holder in the nail storage slot before continuing to work. The present invention has the advantages of simple structure, easy use, high assembly efficiency, and low labor intensity.

[0033] Example 2

[0034] like Figures 9-14The automatic assembly device for decorative nails of aluminum alloy wheel hub shown in the figure includes a circular upper pressing plate 2 and a nail supply connecting plate. A nail loading seat 1 is provided in the middle of the upper side of the upper pressing plate 2. The nail supply connecting plate includes a positioning connecting plate 3 and an automatic nail supply plate 11 that cooperates with the wheel hub. The positioning connecting plate 3 is in the shape of a circular disc. A center positioning circular table 22 that is plugged into the center hole (shaft hole) of the wheel hub is provided in the center of the lower side of the positioning connecting plate 3. A positioning pin 6 that is plugged into the bolt hole of the wheel hub is provided on the lower side of the positioning connecting plate 3 on one side of the center positioning circular table 22. The automatic nail supply plate 11 is in the shape of a circular ring. The automatic nail supply plate 11, the positioning connecting plate 3 and the center positioning circular table 22 are coaxial, that is, the axes coincide. It can be seen from the figure that the positioning connecting plate 3 and the automatic nail supply plate 11 are fixedly connected via the connecting spoke 12, and can also be connected via an annular plate or made into one piece. The above structure is the same as that of Example 1. In this embodiment, the automatic nail feeding tray 11 is provided with ten arc-shaped nail storage slots coaxial with the central positioning cone 22 on its upper side. These slots include a cap chute 30 and a body chute 31. The body chute 31 is located below the cap chute 30 and radially in the center of the automatic nail feeding tray. The cap chute 30 and body chute 31 form a stepped, vertically extending arc-shaped nail storage slot. The decorative nail 21 can be stably installed vertically within the slots, with the cap of the decorative nail 21 positioned within the cap chute 30 and the body of the decorative nail 21 positioned within the body chute 31. The width of the cap chute 30 is 1.05 times the diameter of the cap of the decorative nail 21, and the width of the body chute 31 is 1.05 times the diameter of the body of the decorative nail. This prevents the decorative nail from tilting, and provides a more stable forward push. The automatic nail feeding tray 11 is provided with a limit cover 28 on its upper side; its lower side is provided with a limit slide that engages with the upper side of the cap of the decorative nail. After the decorative nails are arranged in sequence from front to back in the nail storage groove, when the limiting cover 28 is installed on the automatic nail supply disk 11 on the upper side of the nail storage groove, the lower side surface of the limiting cover 28 (the lower side surface of the limiting slide) and the upper side of the nail cap of the decorative nail 21 can be in relative sliding contact or the distance is very close (less than 2mm), for example: the distance between the lower side surface of the limiting cover and the upper side surface of the nail cap of the decorative nail is 0.6mm, which prevents the decorative nail from moving upward and makes the operation more stable. The automatic nail feeding disk 11 is provided with a coaxial, relatively rotatable nail feeding ring 5 on its outer side. A nail feeding notch radially connected to the nail feeding notch is provided on the sidewall of the automatic nail feeding disk 11 outside the nail feeding notch. A driving arm 17 is provided on the inner side of the nail feeding notch 5, which can slide freely back and forth within the notch. The driving arm 17 is arranged radially along the nail feeding ring and extends into the nail feeding notch, allowing for free forward and backward sliding. A nail hole 29 extending vertically through the bottom surface of the front end of the nail feeding notch is provided. The diameter of the nail hole 29 is 1.15 times the diameter of the decorative nail cap. A pressure rod sliding hole is provided on the limiting cover plate 28 opposite the nail hole 29. A pressure rod 4 is provided on the underside of the upper pressing disk opposite the nail hole 29, which cooperates with the pressure rod 4. The pressure rod 4 can pass through the pressure rod sliding hole to press the decorative nail 21 downward from the nail hole 29. In the present invention, clockwise rotation is the forward direction.

[0035] In this embodiment, a hub locating seat 9 is provided that mates with the upper pressure plate. A lower positioning boss 8 is provided on the upper side of the hub locating seat 9, which engages with the hub center hole (axle hole). A lower positioning pin 7 is provided on the upper side of the hub locating seat 9, located on one side of the lower positioning boss 8, and engages with the hub bolt hole. After the hub to be mounted with the decorative nail is positioned on the hub locating seat through the hub center hole and the hub bolt holes, the lower end of the nail pressing rod 4 on the upper pressure plate aligns with the decorative nail mounting hole on the hub.

[0036] In this embodiment, a nail retainer is provided within the nail hole 29. The retainer comprises an upper positioning ring 18 and a lower retaining spring 19. The upper side of the upper positioning ring 18 is coplanar with the lower side of the nail head slot 30. The lower retaining spring 19 is positioned below the upper positioning ring 28 and is used to retain the lower side of the decorative nail head. A decorative nail entry opening 32 is provided on the side (rear side) of the retainer opposite the nail storage slot. The width of the decorative nail entry opening 32 is no less than the width of the nail body slot 31, and the two are directly connected. The inner diameter of the upper positioning ring 18 is 1.05 times the diameter of the decorative nail head. The lower retaining spring 19 is formed by a circular array of at least five triangular retaining springs arranged on the lower side of the upper positioning ring, excluding the decorative nail entry opening. The center of the lower retaining spring forms the decorative nail body hole. When the decorative nail is pushed forward, it slides forward in the nail storage slot. The nail body of the frontmost decorative nail can slide through the decorative nail insertion opening 32 and into the nail stabilizing seat. The nail cap of the decorative nail falls into the upper positioning ring from the upper side. The nail cap is stabilized by the lower support spring and cannot fall freely. When the decorative nail is subjected to downward pressure, it can overcome the support spring force of the support spring and move downward. A driving handle 10 is provided on the outer side of the nail feeding ring. The nail feeding ring can be rotated manually or automatically by using a cylinder or screw drive.

[0037] During use, a pressing power source (such as an oil cylinder or pneumatic cylinder) is connected to the pressure nail loading seat, the outer side of the automatic nail feeding plate is connected to the lifting device, and the wheel hub positioning seat is positioned below the nail feeding connecting plate. The lifting device can be a lifting manipulator or a transmission device driven by a pneumatic cylinder or motor. The lifting device can drive the nail feeding connecting plate up and down between the upper pressing plate and the wheel hub positioning seat. The nailing hole on the automatic nail feeding plate is aligned with the lower end of the nail pressing rod. The aluminum alloy wheel is installed on the wheel hub positioning seat. The lifting device drives the positioning connecting plate downward, inserting the center positioning cone into the center hole of the wheel hub and the positioning pin into the wheel hub bolt hole. The positioning connecting plate is then positioned and connected to the aluminum alloy wheel hub. At this point, the decorative nail mounting hole on the aluminum alloy wheel hub is aligned with the nailing hole and the nail pressing rod. Five decorative nails arranged in a front-to-back direction are loaded into the nail storage slot, with the push arm located behind the last decorative nail; the nail supply push ring is rotated, which drives the push arm to move forward in the nail storage slot, pushing the decorative nail in the nail storage slot forward, so that the decorative nail on the front side enters the nail stabilizing seat, pressing the power source to work, applying downward pressure to the upper pressing plate, and pressing the lower end of the nail pressing rod against the upper side of the decorative nail, pressing the decorative nail downward from the nail stabilizing seat and into the decorative nail installation hole of the aluminum alloy wheel hub; pressing the power source in the opposite direction drives the upper pressing plate to move upward and reset, and a circle of decorative nails on the wheel hub is installed at one time. The lifting device lifts the nail supply connecting plate upward to separate the positioning connecting plate from the aluminum alloy wheel hub, then removes the aluminum alloy wheel hub with the decorative nails installed, and installs the next aluminum alloy wheel hub to be assembled with decorative nails on the wheel hub positioning seat. The above assembly operation is repeated until the decorative nails in the nail storage slot are used up, and the nail storage slot can be replenished with decorative nails before continuing to work. The present invention has the advantages of simple structure, convenient use, high assembly efficiency, low labor intensity, etc.

Claims

1. An automatic assembly device for aluminum alloy wheel hub decorative nails, characterized in that: The present invention relates to a nail feeding plate, wherein the upper side of the nail feeding plate is provided with a nail pressure loading seat, the nail feeding plate comprises a positioning connecting plate and an automatic nail feeding plate that cooperate with the wheel hub, the positioning connecting plate is in the shape of a circular disc, the center of the lower side of the positioning connecting plate is provided with a center positioning round platform that is plugged into and cooperates with the center hole of the wheel hub, and the lower side of the positioning connecting plate on one side of the center positioning round platform is provided with a positioning pin that is plugged into and cooperates with the bolt hole of the wheel hub; the automatic nail feeding plate is in the shape of a circular ring, the upper side of the automatic nail feeding plate is provided with a nail storage groove, the outer side of the automatic nail feeding plate is provided with a relatively rotatable nail feeding ring, the automatic nail feeding plate outside the nail storage groove is provided with a nail pushing notch radially connected to the nail storage groove, the inner side of the nail feeding ring is provided with a pushing arm that can slide in the nail pushing notch, and the pushing arm extends into the nail storage groove. A nail hole is provided on the bottom surface of the nail storage groove, and a nail pressing rod cooperating with the nail hole is provided on the upper pressing plate opposite to the nail hole, and the nail pressing rod can press the decorative nail out from the nail hole from top to bottom; a nail arranging plate that can slide back and forth is provided in the nail storage groove, and an arrangement groove that passes through the upper and lower parts is provided on the nail arranging plate, and at least 3 nail seats are provided in the arrangement groove, and the nail seat includes a stabilizing ring and a supporting spring piece, and the inner diameter of the stabilizing ring is 1.01-1.1 times the diameter of the decorative nail cap, and the supporting spring piece is arranged on the lower side of the stabilizing ring and is used to support the lower side of the decorative nail cap; A rectangular positioning slot is provided on the bottom surface of the nail storage slot on the front side of the nail hole, the front side surface of the positioning slot is a guide sliding surface inclined forward from bottom to top, and the rear side surface of the positioning slot is a vertical positioning surface; a positioning protrusion is provided on the lower side surface of the nail row plate in front of the arrangement groove, the front side surface of the positioning protrusion is a lifting sliding surface inclined forward from bottom to top, and the rear side surface of the positioning protrusion is a protrusion positioning surface that cooperates with the positioning surface; a positioning spring piece that cooperates with the side surface of the nail row plate is provided on the side wall of the nail storage slot opposite to the positioning slot.

2. The automatic assembly device for aluminum alloy wheel hub decorative nails according to claim 1, characterized in that: A wheel hub locating seat is provided which cooperates with the upper pressing plate, a lower locating table which is plugged into the center hole of the wheel hub is provided on the upper side of the wheel hub locating seat, and at least one lower locating pin which is plugged into the bolt hole of the wheel hub is provided on the upper side of the wheel hub locating seat on one side of the lower locating table.

3. The automatic assembly device for aluminum alloy wheel hub decorative nails according to claim 1, characterized in that: The side wall of the nail storage groove is provided with an elastic piece installation groove, and the positioning elastic piece is arc-shaped. One end of the positioning elastic piece is fixed in the elastic piece installation groove, and the other end is located in the nail storage groove outside the elastic piece installation groove.

4. An automatic assembly device for aluminum alloy wheel hub decorative nails, characterized in that: The present invention relates to a nail feeding plate, wherein the upper side of the nail feeding plate is provided with a nail pressure loading seat, the nail feeding plate comprises a positioning connecting plate and an automatic nail feeding plate that cooperate with the wheel hub, the positioning connecting plate is in the shape of a circular disc, the center of the lower side of the positioning connecting plate is provided with a center positioning round platform that is plugged into and cooperates with the center hole of the wheel hub, and the lower side of the positioning connecting plate on one side of the center positioning round platform is provided with a positioning pin that is plugged into and cooperates with the bolt hole of the wheel hub; the automatic nail feeding plate is in the shape of a circular ring, the upper side of the automatic nail feeding plate is provided with a nail storage groove, the outer side of the automatic nail feeding plate is provided with a relatively rotatable nail feeding ring, the automatic nail feeding plate outside the nail storage groove is provided with a nail pushing notch radially connected to the nail storage groove, the inner side of the nail feeding ring is provided with a pushing arm that can slide in the nail pushing notch, and the pushing arm extends into the nail storage groove. The bottom surface of the nail storage groove is provided with a nail hole, and the upper pressing plate opposite to the nail hole is provided with a nail pressing rod cooperating therewith, which can press the decorative nail out from the nail hole from top to bottom; the nail storage groove includes a nail cap slide groove and a nail body slide groove, the nail body slide groove is located at the lower center of the nail cap slide groove, and the decorative nail can be stably installed vertically in the nail storage groove, the nail cap of the decorative nail is located in the nail cap slide groove, and the nail body of the decorative nail is located in the nail body slide groove. The width of the nail cap slide groove is 1. 01-1.1 times, the width of the nail body slide groove is 1.01-1.1 times the diameter of the decorative nail body; the nail hole shown is arranged on the bottom surface of the front end of the nail storage groove, and a nail stabilizing seat is provided in the nail hole, and the nail stabilizing seat includes an upper positioning ring and a lower supporting spring piece. The upper side surface of the upper positioning ring and the lower side surface of the nail cap slide groove are located in the same plane, and the lower supporting spring piece is arranged on the lower side of the upper positioning ring for supporting the lower side of the decorative nail cap; an opening for sliding the decorative nail is provided on the side of the nail stabilizing seat opposite to the nail storage groove.

5. The automatic assembly device for aluminum alloy wheel hub decorative nails according to claim 4, characterized in that: The automatic nail feeding disk is provided with a limit cover plate, and a pressure rod sliding hole is provided on the limit cover plate opposite to the nail hole; the nail pressing rod can pass through the pressure rod sliding hole to press the decorative nail out from the nail hole from top to bottom.

6. The automatic assembly device for aluminum alloy wheel hub decorative nails according to claim 4, characterized in that: The width of the opening into which the decorative nail slides is not less than the width of the nail body slot; the inner diameter of the upper positioning ring is 1.01-1.2 times the diameter of the decorative nail cap, and the lower supporting spring piece is formed by at least 3 triangular spring pieces in a circular array arranged on the lower side of the upper positioning ring, and the middle part of the lower supporting spring piece is the decorative nail body hole.

Images