Automatic nail feeding device

Abstract

The present application relates to the technical field of automated equipment, improves the problem that an automatic screw-tightening device cannot feed and tighten screws with washers, and discloses an automatic nail feeding device, including a feeding mechanism, a gripping mechanism, and a tightening mechanism; the feeding mechanism includes a material tray and a pushing assembly, the material tray is provided with a slide groove for the screw to slide along the length, and the head end face of the screw abuts against the bottom wall of the slide groove; the gripping mechanism includes a positioning seat, a clamping claw, and a second driving member, the positioning seat is used to position the screw that slides out of the outlet; the tightening mechanism includes a supporting member and a third driving member. The pushing assembly can push the screw toward the positioning seat onto the positioning seat, the clamping claw clamps the screw and is driven by the second driving member to move above the supporting member, and the clamping claw places the screw on the supporting member; the product to be assembled is located above the supporting member, and the third driving member drives the supporting member to rotate and move upward, thereby tightening the screw with washers and spring washers from bottom to top into the product, thereby improving production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of automation equipment, and in particular to an automatic nail feeding device. Background Art

[0002] Threaded fastening is a common method of assembly for electronic products and components. Conventional threaded fastening involves manually inserting a screwdriver into a threaded hole and tightening it to securely connect two or more components.

[0003] In order to improve production efficiency and safety, there is an automatic screw tightening device, which includes a screw material tray and a screw tightening mechanism. The staff only needs to arrange the screws vertically on the screw material tray, with the screw heads at the upper end, so that the screw tightening mechanism can grab the screw heads and transport the screws to the product to be installed. The screw tightening mechanism drives the screws to rotate and tightens the screws on the product from top to bottom.

[0004] Although the above device can realize automatic nail feeding and screw tightening, since the head of the screw is facing upward and the threaded rod of the screw is facing downward, gaskets and spring washers cannot be installed on the screw. Only a single screw can be delivered to the product to be tightened and the screw can be tightened on the product. When gaskets and spring washers need to be installed on the screw to improve the tightness of the connection structure, manual nail feeding and tightening are still required, and the operation is still inconvenient. Summary of the Invention

[0005] In order to solve the defect that the automatic screw-tightening device cannot deliver and tighten the screws with gaskets, the present application provides an automatic nail feeding device.

[0006] This application provides an automatic nail feeding device, which adopts the following technical solutions:

[0007] An automatic nail feeding device comprises a feeding mechanism, a gripping mechanism and a tightening mechanism;

[0008] The feeding mechanism includes a material tray and a pushing assembly, wherein the material tray is provided with a slide groove for sliding a screw along the length direction, the head end face of the screw abuts against the bottom wall of the slide groove, and one end of the slide groove along the length direction is set as an outlet, and the pushing assembly includes a push member slidably connected to the slide groove and a first driving member that drives the push member to reciprocate along the slide groove;

[0009] The gripping mechanism includes a positioning seat located at the outlet, a clamping claw for clamping the screw, and a second driving member for driving the clamping claw to move, wherein the positioning seat is used to position the screw that slides out of the outlet;

[0010] The tightening mechanism includes a bearing member and a third driving member that drives the bearing member to rotate along a vertical axis as a center line and move vertically upward;

[0011] The first driving member drives the pushing member to push the screw toward the outlet onto the positioning seat, the clamping jaw clamps the screw and is driven by the second driving member to move above the supporting member, the clamping jaw places the screw on the supporting member and the head of the screw abuts against the supporting member.

[0012] By adopting the above technical solution, the screw with the gasket and the spring washer is first inverted and slid into the slide groove from the end of the slide groove, that is, the head of the screw is placed in the slide groove facing downward, and multiple screws can be arranged in the slide groove; then the first driving member drives the push member to move toward the direction of the outlet, thereby pushing the screw located at the outermost end of the outlet to the positioning seat, and the head of the screw is located on the positioning seat facing downward and is positioned; the clamping jaw then clamps the screw on the positioning seat, and the second driving member drives the clamping jaw to move above the carrier, and the clamping jaw places the screw on the carrier, and the head of the screw is still located on the carrier facing downward; the product to be assembled is located above the carrier, and the third driving member drives the carrier to rotate and move upward, so that the screw with the gasket and the spring washer can be tightened from bottom to top in the product; when the clamping jaw clamps a screw, the first driving member pushes the next screw into the positioning seat through the push member. During the entire process of feeding and tightening the nails, the feeding mechanism, the grabbing mechanism and the tightening mechanism cooperate to keep the screw in a state with the head facing downward and the stem facing upward, so that the gasket and the spring piece sleeved on the screw stem will not fall off, and the gasket and the spring piece are screwed together on the product, thereby improving the stability of the product's own structure.

[0013] Optionally, the sliding groove includes a wide portion and a narrow portion connected to the upper portion of the wide portion, and the wide portion and the narrow portion are respectively provided for the head and the rod of the screw to slide in cooperation.

[0014] By adopting the above technical solution, the connected wide part and narrow part make the cross section of the slide groove form an "inverted T shape", and the screw just fits into the slide groove with the head facing downward, thereby improving the stability of the screw sliding when the push member pushes the screw, avoiding the situation where the screw tilts in the moving direction, and ensuring that the gasket and the spring washer can be stably mounted on the screw rod; moreover, when the head of the screw is hexagonal, the wide part of the slide groove that abuts against the screw head can also limit the rotation of the screw, further improving the stability of the screw when moving.

[0015] Optionally, an abutment groove is provided on a side of the push member facing the outlet, and when the head of the screw is inserted into the abutment groove, the rod of the screw abuts against the surface of the push member.

[0016] By adopting the above technical solution, an abutment groove is provided on the push member for the part of the screw head that exceeds the rod to be inserted, so that when the push member pushes the screw, the head and the rod of the screw can both abut against the push member, further improving the stability of the screw when being pushed and further reducing the possibility of the screw tilting.

[0017] Optionally, the positioning seat is provided with a positioning groove for the head of the screw to be plugged into.

[0018] By adopting the above technical solution, when the screw slides out of the outlet, the head of the screw just enters the positioning groove. The positioning groove can improve the stability of the screw positioning, and also facilitates the clamping claw to clamp the screw from above, further reducing the occurrence of the screw tipping over to the gasket and spring washer detaching from the screw.

[0019] Optionally, a stop portion is protruding from the top surface of the positioning seat at one end away from the material tray and both ends adjacent to the material tray, and the stop portion surrounds the positioning groove, and the stop portion is inclined downward toward the inner wall of the positioning groove in the direction of the positioning groove.

[0020] By adopting the above technical solution, when the screw is pushed forward to the positioning seat by the pushing member, the stop portion can limit the screw from continuing to move forward due to inertia, and the inner wall of the stop portion inclined toward the positioning groove can play a guiding role. Even if the screw collides with the stop portion, it can be guided into the positioning groove, further improving the stability of the nail feeding process and facilitating the precise clamping of the clamp.

[0021] Optionally, a detector electrically connected to the second driving member is installed on the positioning seat. When the head of the screw enters the positioning seat, the detector sends a signal to the second driving member, and the second driving member drives the clamp to move above the positioning seat.

[0022] By adopting the above technical solution, a detector is installed in the positioning seat to monitor in real time whether there is a screw entering the positioning seat. When the detector detects the positioning of the screw, the second driving member drives the clamping jaw to move above the positioning seat and the clamping jaw clamps the rod of the screw, thereby improving the accuracy and working efficiency of the automatic nail feeding device in clamping the screw, avoiding empty clamping or crooked clamping of the clamping jaw, and preventing the gasket and spring washer from detaching from the screw during the process of the screw being clamped and moved by the clamping jaw.

[0023] Optionally, the detector includes a detection head, a detection tail, and a detection line connected between the detection head and the detection tail, the detection head and the detection tail are respectively fixed to the positioning seat and the long direction of the detection line is perpendicular to the pushing direction of the push member, when the head of the screw enters the positioning groove, the rod of the screw contacts the detection line.

[0024] By adopting the above technical solution, the detector is specifically monitored through the detection line. When the screw contacts the detection line, the detector sends a signal to the second driving member; moreover, the detection line can also intercept the screw, so that the screw is hindered and falls stably into the positioning groove.

[0025] Optionally, a top end of the carrier is provided with a receiving groove for the head of the screw to be fitted into.

[0026] By adopting the above technical solution, the screws fall directly into the receiving groove of the carrier from above, which not only enables the screws to be better positioned, but also reduces the possibility of the screws being skewed or detached from the carrier during the process of being screwed onto the product to be assembled, thereby improving the stability of the assembly process and ensuring that the gasket and spring clip can be connected to the product together with the screws.

[0027] Optionally, the interior of the carrier is hollow and communicates with the accommodating groove, and the interior of the carrier is connected to a vacuum adsorption source.

[0028] By adopting the above technical solution, the carrier is connected to a vacuum adsorption source so as to attract the screw. When the clamping jaws loosen the screw, the screw can be stably adsorbed in the receiving groove, and the process of tightening the screw is also more stable.

[0029] Optionally, the tightening mechanism is connected to a moving mechanism, which includes a first-direction moving member fixed to the tightening mechanism and a second-direction moving member connected to the first-direction moving member; the first-direction moving member drives the tightening mechanism to move in the same direction as the driving direction of the first driving member, and the second-direction moving member drives the first-direction moving member to move in a direction perpendicular to the first-direction moving member on a horizontal plane.

[0030] By adopting the above technical solution, the tightening mechanism is connected to the first direction moving member and the second direction moving member to realize movement in the X-axis and Y-axis directions respectively, so that the screws on the carrier can be moved to the position where the screws need to be screwed on the product to be assembled without moving the product separately, and the operation is more convenient and quick.

[0031] In summary, this application has at least one of the following beneficial effects:

[0032] 1. First, the screw with the washer and spring washer is inverted and slid into the slide groove from the end of the slide groove, that is, the head of the screw is placed in the slide groove downward, and then pushed into the positioning groove of the positioning seat. The clamping claw then clamps the screw on the positioning seat and moves it to the carrier. The product to be assembled is located above the carrier. The third driving member drives the carrier to rotate and move upward, so that the screw with the washer and spring washer can be tightened into the product from bottom to top. Through the cooperation of the feeding mechanism, the grabbing mechanism and the tightening mechanism, the screw is always kept in a state with the head facing downward and the rod facing upward, so that the washer and spring piece sleeved on the screw rod will not fall off, and the washer and spring piece are screwed to the product together, thereby improving the stability of the product structure itself.

[0033] 2. Through the restrictions of the material tray, positioning seat, bearing parts and other components, the screws with washers and spring washers are more stable in each movement and positioning process, which improves the efficiency and accuracy of nail feeding and tightening screws, improves work efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of an automatic nail feeding device in an embodiment of the present application;

[0035] Figure 2 Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 is a cross-sectional view of a material tray in an embodiment of the present application;

[0037] Figure 4 This is a side view of the embodiment of the present application when the pushing member pushes against the screw;

[0038] Figure 5 It is a structural schematic diagram of the automatic nail feeding device from another angle in an embodiment of the present application.

[0039] Explanation of reference numerals: 1. workbench; 11. lifting frame; 12. through slot; 2. feeding mechanism; 21. tray; 211. chute; 2111. wide portion; 2112. narrow portion; 212. outlet; 213. base; 214. cover; 22. pushing assembly; 221. pushing member; 2211. abutting slot; 222. first driving member; 223. connecting plate; 23. limiting block; 231. giving way slot; 3. grabbing machine Structure; 31. Positioning seat; 311. Positioning groove; 312. Stopper; 313. Detector; 3131. Detection head; 3132. Detection tail; 3133. Detection line; 32. Clamping claw; 33. Second driving member; 4. Tightening mechanism; 41. Carrying member; 411. Accommodating groove; 42. Third driving member; 5. Moving mechanism; 51. First direction moving member; 52. Second direction moving member; 53. Guide rail; 6. Screw. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] Reference Figure 1 The embodiment of the present application discloses an automatic nail feeding device, including a workbench 1 and a feeding mechanism 2, a gripping mechanism 3 and a tightening mechanism 4 installed on the workbench 1; the screw 6 with the gasket and the spring washer is placed on the feeding mechanism 2 with the head facing down, the feeding mechanism 2 pushes the screw 6 into the gripping mechanism 3, and the gripping mechanism 3 feeds the screw 6 into the tightening mechanism 4. The product to be assembled is located above the tightening mechanism 4, and the tightening mechanism 4 tightens the screw 6 from bottom to top in the product. During the entire nail feeding and tightening process, the feeding mechanism 2, the gripping mechanism 3 and the tightening mechanism 4 cooperate to keep the screw 6 in a state with the head facing down and the rod facing up, so that the gasket and the spring piece sleeved on the rod of the screw 6 will not fall off, thereby realizing automatic screwing of the screw 6 with the gasket and the spring washer on the product, thereby improving production efficiency and reducing labor costs.

[0042] Reference Figure 1 and Figure 2 A lifting frame 11 is fixed on the surface of the workbench 1, and a through slot 12 is also provided on the surface of the workbench 1. The feeding mechanism 2 is installed on the lifting frame 11, and the tightening mechanism 4 is installed on the workbench 1 below the through slot 12, so as to facilitate tightening the screws 6 from bottom to top.

[0043] Reference Figure 2 and Figure 3Specifically, the feeding mechanism 2 includes a material tray 21 and a pushing assembly 22. The material tray 21 is provided with a slide groove 211 for the screw 6 to slide along the length. The slide groove 211 can allow the head of the screw 6 to enter, so that the screw 6 with the gasket and the spring can be placed into the slide groove 211 with the head facing down, and then pushed into the next grasping operation process by the pushing assembly 22. In other embodiments, the slide groove 211 can be set to a rectangular strip shape. In this embodiment, in order to make the screw 6 more stable during movement, the slide groove 211 includes a wide portion 2111 and a narrow portion 2112 connected to the top of the wide portion 2111. The wide portion 2111 and the narrow portion 2112 respectively allow the head and the rod of the screw 6 to slide together, that is, the wide portion 2111 of the wide portion 2111 is consistent with the width of the head of the screw 6, and the width of the narrow portion 2112 is consistent with the diameter of the rod of the screw 6. At this time, the slide groove 211 forms an "inverted T-shaped" groove, which reduces the movement of the screw 6 during movement. Swinging occurs; in order to facilitate processing, the material tray 21 includes a base 213 and a cover plate 214, the base 213 is fixed to the lifting frame 11 by bolts, and the middle part of the top surface of the base 213 is penetrated along the length to form the wide part 2111 of the slide 211, and the cover plate 214 is two long strips and is fixed to the base 213 on both sides of the wide part 2111 by bolts respectively, and the distance between the two long strips forms the narrow part 2112 of the slide 211, and the thickness of the cover plate 214 can be less than the length of the rod of the screw 6.

[0044] Reference Figure 1 and Figure 2 One end of the chute 211 along its length is provided with an outlet 212, and the end of the tray 21 away from the outlet 212 is connected to a limiting block 23. The pushing assembly 22 includes a resisting member 221 slidably connected to the chute 211 and a first driving member 222 that drives the resisting member 221 to reciprocate along the chute 211. The resisting member 221 is located on the side of the chute 211 away from the outlet 212. The limiting block 23 has a clearance groove 231 defined at a position corresponding to the chute 211, which allows the resisting member 221 to pass through and prevents the screws 6 from passing through and leaving the tray 21. The screws 6 are sequentially arranged in the chute 211, abutting against each other. The first driving member 222 then drives the resisting member 221 toward the outlet 212, thereby pushing the screws 6 located on the outermost side of the outlet 212 out of the tray 21.

[0045] In other embodiments, the push member 221 can be a bar block with a width no greater than the head of the screw 6, and the first driving member 222 is configured as a linear driving cylinder such as a pneumatic cylinder, an electric cylinder or a hydraulic cylinder. The center axis of the output shaft of the first driving member 222 overlaps with the center axis of the slide groove 211, thereby directly pushing the push member 221 to move.

[0046] In this embodiment, in order to make the pushing process more stable, the push member 221 is set as a T-shaped block, the head of the T-shaped block is in contact with the cover plate 214, the first driving member 222 is set as a rodless cylinder installed on one side of the material tray 21 along the length, the slider on the rodless cylinder is fixed with a connecting plate 223, and the push member 221 is fixed to the bottom surface of the connecting plate 223. Figure 4 A contact groove 2211 is provided at the bottom of the push piece 221 on the side facing the outlet 212. When the head of the screw 6 is inserted into the contact groove 2211, the rod of the screw 6 contacts the surface of the push piece 221, so that when the push piece 221 pushes the screw 6, the head and rod of the screw 6 can both contact the push piece 221, further reducing the possibility of the screw 6 tilting and separating from the gasket and the spring washer when being pushed.

[0047] Reference Figure 1 and Figure 2 The grabbing mechanism 3 includes a positioning seat 31 located at the outlet 212 , a clamping jaw 32 for clamping the screw 6 , and a second driving member 33 for driving the clamping jaw 32 to move. The positioning seat 31 is used to position the screw 6 that slides out of the outlet 212 .

[0048] In other embodiments, the positioning seat 31 may be provided with two opposing clamping blocks and a small driving member for driving the clamping blocks to move closer to or away from each other. When the two clamping blocks move closer to each other, they can clamp the screw 6 placed on the positioning seat 31 .

[0049] In this embodiment, a positioning groove 311 is preferably provided on the positioning seat 31 for the head of the screw 6 to fit in. The shape of the positioning groove 311 is consistent with the shape of the head of the screw 6. When the screw 6 slides out of the outlet 212, the head of the screw 6 just enters the positioning groove 311. The positioning groove 311 can improve the stability of the positioning of the screw 6 and also facilitate the clamping claw 32 to clamp the screw 6 from above. Furthermore, the top surface of the positioning seat 31 is protruding from the end away from the material tray 21 and the two ends adjacent to the material tray 21. The stopper 312 surrounds the positioning groove 311 and forms a U-shaped groove with an opening toward the material tray 21 for discharging the material. The stopper 312 is inclined downward toward the inner wall of the positioning groove 311 in the direction of the positioning groove 311. When the screw 6 is pushed forward to the positioning seat 31 by the pushing member, the stop portion 312 can limit the screw 6 from continuing to move forward due to inertia, and the inclined inner wall of the stop portion 312 can play a guiding role. Even if the screw 6 collides with the stop portion 312, it can be guided into the positioning groove 311, further improving the stability of the nail feeding process, reducing the situation where the screw 6 falls onto the gasket and the spring washer and separates from the screw 6, and facilitating the accurate clamping of the clamping jaws 32.

[0050] Furthermore, a detector 313 electrically connected to the second driver 33 is mounted on the positioning seat 31. The detector 313 can monitor in real time whether a screw 6 enters the positioning seat 31. When the head of the screw 6 enters the positioning seat 31, the detector 313 sends a signal to the second driver 33, which drives the clamping jaws 32 to move above the positioning seat 31. This improves the accuracy and efficiency of the automatic nail feeding device in gripping the screw 6 and prevents the clamping jaws 32 from misaligning or misaligning. In one embodiment, the detector 313 can be configured as a weight sensor embedded in the bottom wall of the positioning slot 311; in another embodiment, the detector 313 can be configured as an infrared sensor mounted on the inner wall of the stopper 312. Preferably, in this embodiment, the detector 313 includes a detection head 3131, a detection tail 3132 and a detection line 3133 connected between the detection head 3131 and the detection tail 3132. The detection head 3131 and the detection tail 3132 are respectively fixed on the opposite sides of the stop portion 312 and the length of the detection line 3133 is perpendicular to the pushing direction of the push member 221. When the head of the screw 6 enters the positioning groove 311, the rod of the screw 6 contacts the detection line 3133. The detector 313 can not only monitor the status of the screw 6, but also intercept the screw 6, so that the screw 6 is blocked and falls stably in the positioning groove 311.

[0051] Reference Figure 1 The clamping jaw 32 has two claws that can move toward or away from each other. Driven by a pneumatic cylinder, the claws can slide vertically. The clamping jaw 32 is conventional and will not be described in detail. The second drive member 33 includes a fixed rail and a linear drive cylinder. The fixed rail is perpendicular to the length of the tray 21. The output shaft of the linear drive cylinder is fixed to the clamping jaw 32. The bracket of the clamping jaw 32 has a sliding portion that engages with the fixed rail. After the clamping jaw 32 grasps the screw 6 in the positioning slot 311 and moves upward, the second drive member 33 steadily drives the clamping jaw 32 to the next tightening step.

[0052] Reference Figure 5 The tightening mechanism 4 includes a carrier 41 and a third driving member 42 that drives the carrier 41 to rotate along the vertical axis and move vertically upward. The clamping jaw 32 clamps the screw 6 and is driven by the second driving member 33 to move to the top of the carrier 41. The clamping jaw 32 places the screw 6 on the carrier 41 and the head of the screw 6 abuts against the carrier 41. The third driving member 42 includes a motor that drives the carrier 41 to rotate and a rodless cylinder that drives the carrier 41 to move vertically. The slider of the rodless cylinder is fixed to the motor. The rodless cylinder can also be provided with a slider that is rotatably connected to the carrier 41 to play a supporting role, making the movement of the carrier 41 more stable. It should be noted that when the carrier 41 moves downward, the motor will not drive the carrier 41 to rotate.

[0053] In other embodiments, the end of the carrier 41 can fix the screw 6 by clamping; in this embodiment, the structure is further simplified while ensuring the stability of the connection. The carrier 41 is in the shape of a cylindrical rod, and the top of the carrier 41 is provided with a receiving groove 411 for the head of the screw 6 to fit in. After being loosened by the clamping jaws 32, the screw 6 falls directly from above into the receiving groove 411 of the carrier 41, which not only enables better positioning of the screw 6, but also improves the stability of the assembly process, thereby ensuring that the gasket and the spring can be connected to the product together with the screw 6. Furthermore, the interior of the carrier 41 is hollow and connected to the receiving groove 411. The interior of the carrier 41 is connected to a vacuum adsorption source so that it can attract the screw 6, reducing the possibility of the screw 6 being skewed or detached from the carrier 41 during the process of being screwed onto the product to be assembled.

[0054] In other embodiments, the tightening mechanism 4 does not move on the horizontal plane, and the product to be assembled can be moved so that the screw 6 on the carrier 41 is aligned with the bottom of the threaded hole on the product. Figure 5 In this embodiment, the tightening mechanism 4 is preferably configured to be movable. Specifically, the tightening mechanism 4 is connected to a moving mechanism 5. The moving mechanism 5 includes a first-direction moving member 51 whose moving direction is consistent with the driving direction of the first driving member 222, and a second-direction moving member 52 whose moving direction is perpendicular to the first-direction moving member 51 in a horizontal plane. The first-direction moving member 51 and the second-direction moving member 52 are both configured as rodless cylinders. The bracket of the third driving member 42 is fixed to the slider of the first-direction moving member 51. The second-direction moving member 52 is fixed to the side of the workbench 1 near the through-slot 12. The workbench 1 is provided with a guide rail 53 parallel to the side of the through-slot 12 relative to the second-direction moving member 52. The two ends of the first-direction moving member 51 are respectively fixed to the sliders of the second-direction moving member 52 and the guide rail 53. The cooperation of the third driving member 42, the first-direction moving member 51, and the second-direction moving member 52 enables the carrier 41 to be moved along the X, Y, and Z axes, thereby positioning the screw 6 below the screw connection position of the product to be assembled without having to move the product separately, making the operation more convenient and quick.

[0055] The implementation principle of an automatic nail feeding device in the embodiment of the present application is as follows:

[0056] The screw 6 with the washer and the spring washer is inverted and slid into the chute 211 from the outlet 212 in sequence, that is, the head of the screw 6 is placed downward in the chute 211, and multiple screws 6 can be arranged in the chute 211; then the first driving member 222 drives the pushing member 221 to move toward the direction of the outlet 212, thereby pushing the screw 6 at the outermost end of the outlet 212 into the positioning groove 311 of the positioning seat 31, and the head of the screw 6 is located downward on the positioning seat 31 and is positioned; after the detector 313 detects the screw 6, the second driving member 33 drives the clamp The claw 32 moves to the top of the positioning slot 311, the clamping jaw 32 itself moves downward and tightens the shaft of the screw 6. Then, the second driving member 33 drives the clamping jaw 32 to move above the carrier 41. The clamping jaw 32 places the screw 6 in the receiving slot 411 of the carrier 41. The head of the screw 6 is still facing downward and is vacuum-adsorbed on the carrier 41. The product to be assembled is located above the carrier 41. Finally, the third driving member 42 drives the carrier 41 to rotate and move upward, thereby tightening the screw 6 with the gasket and spring washer from bottom to top into the product. After the clamping jaw 32 clamps a screw 6, the first driving member 222 pushes the next screw 6 into the positioning seat 31 through the push member 221. The clamping jaw 32 places the previous screw 6 on the carrier 41 and then returns to clamp the next one. During the entire process of feeding and tightening the nails, the feeding mechanism 2, the grabbing mechanism 3 and the tightening mechanism 4 cooperate to keep the screw 6 in a state with the head facing downward and the stem facing upward, so that the gasket and the spring piece sleeved on the stem of the screw 6 will not fall off, and the gasket and the spring piece are screwed onto the product together, thereby improving work efficiency and precision and reducing labor costs.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic nail feeding device, characterized in that: It comprises a feeding mechanism (2), a gripping mechanism (3) and a tightening mechanism (4); The feeding mechanism (2) includes a material tray (21) and a pushing assembly (22), the material tray (21) is provided with a slide groove (211) along the length direction for the screw (6) to slide, the screw (6) is sleeved with a gasket and a spring washer, the head end face of the screw (6) abuts against the bottom wall of the slide groove (211), one end of the slide groove (211) along the length direction is set as an outlet (212), and the pushing assembly (22) includes a push member (221) slidably connected to the slide groove (211) and a first driving member (222) driving the push member (221) to reciprocate along the slide groove (211); The gripping mechanism (3) comprises a positioning seat (31) located at the outlet (212), a clamping claw (32) for clamping the screw (6), and a second driving member (33) for driving the clamping claw (32) to move, wherein the positioning seat (31) is used to position the screw (6) that slides out of the outlet (212); The tightening mechanism (4) comprises a bearing member (41) and a third driving member (42) driving the bearing member (41) to rotate along a vertical axis as a center line and move vertically upward; The first driving member (222) drives the pushing member (221) to push the screw (6) toward the outlet (212) onto the positioning seat (31); the clamping jaw (32) clamps the screw (6) and is driven by the second driving member (33) to move to above the supporting member (41); the clamping jaw (32) places the screw (6) on the supporting member (41) and the head of the screw (6) abuts against the supporting member (41).

2. The automatic nail feeding device according to claim 1, characterized in that: The sliding groove (211) comprises a wide portion (2111) and a narrow portion (2112) connected to the upper portion of the wide portion (2111), wherein the wide portion (2111) and the narrow portion (2112) are respectively used for the head and the rod of the screw (6) to slide in cooperation.

3. The automatic nail feeding device according to claim 1, characterized in that: The push member (221) is provided with an abutment groove (2211) on one side facing the outlet (212); when the head of the screw (6) is inserted into the abutment groove (2211), the rod of the screw (6) abuts against the surface of the push member (221).

4. The automatic nail feeding device according to claim 1, characterized in that: The positioning seat (31) is provided with a positioning groove (311) for the head of the screw (6) to be plugged in and matched with.

5. The automatic nail feeding device according to claim 4, characterized in that: A stopper (312) is protruding from the top surface of the positioning seat (31) at one end away from the material tray (21) and at both ends adjacent to the material tray (21). The stopper (312) surrounds the positioning groove (311), and the stopper (312) is inclined downward in the direction of the positioning groove (311) toward the inner wall of the positioning groove (311).

6. The automatic nail feeding device according to claim 4, characterized in that: A detector (313) electrically connected to the second driving member (33) is installed on the positioning seat (31). When the head of the screw (6) enters the positioning seat (31), the detector (313) sends a signal to the second driving member (33), and the second driving member (33) drives the clamping jaw (32) to move above the positioning seat (31).

7. The automatic nail feeding device according to claim 6, characterized in that: The detector (313) comprises a detection head (3131), a detection tail (3132), and a detection line (3133) connected between the detection head (3131) and the detection tail (3132); the detection head (3131) and the detection tail (3132) are respectively fixed to the positioning seat (31), and the length of the detection line (3133) is perpendicular to the pushing direction of the push member (221); when the head of the screw (6) enters the positioning slot (311), the rod of the screw (6) contacts the detection line (3133).

8. The automatic nail feeding device according to claim 1, characterized in that: The top end of the carrier (41) is provided with a receiving groove (411) for the head of the screw (6) to be plugged in and matched with.

9. The automatic nail feeding device according to claim 8, characterized in that: The interior of the carrier (41) is hollow and communicates with the accommodating groove (411), and the interior of the carrier (41) is connected to a vacuum adsorption source.

10. The automatic nail feeding device according to claim 1, characterized in that: The tightening mechanism (4) is connected to a moving mechanism (5), and the moving mechanism (5) comprises a first-direction moving member (51) fixed to the tightening mechanism (4) and a second-direction moving member (52) connected to the first-direction moving member (51); the first-direction moving member (51) drives the tightening mechanism (4) to move in the same direction as the driving direction of the first driving member (222), and the second-direction moving member (52) drives the first-direction moving member (51) to move in a direction perpendicular to the first-direction moving member (51) on a horizontal plane.

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