A small screw storage magazine, feeding module and screw locking device

Abstract

The present invention discloses a small screw storage magazine, a feeding module and a screw locking device, wherein the screw locking device comprises a small screw feeding module and a screw locking module, the small screw feeding module comprising a screw feeder, a screw suction nozzle, a loading and transferring module and a double-station storage assembly, the screw suction nozzle being assembled on the loading and transferring module, the double-station storage assembly comprising a full material station and an empty material station, both of which are detachably provided with a small screw storage magazine, the screw locking module comprising a mounting seat, an electric screwdriver, an electric screwdriver lifting module and a magazine shifting module, the electric screwdriver being assembled on the electric screwdriver lifting module, a follower seat being fixedly connected to the output flange of the magazine shifting module, a second magazine being arranged on the follower seat, and a small screw storage magazine filled with materials being detachably provided in the second magazine. The above-mentioned screw locking device is not only compact in structure and ingenious in design, but also has high working efficiency, can ensure the locking accuracy of small screws, and has a low defective rate.

Description

Technical Field

[0001] The present invention belongs to the automatic assembly technology of 3C products, and in particular relates to a small screw storage clip, a feeding module and a screw locking device used for assembling small shrapnel of 3C products. Background Art

[0002] The so-called "3C products" are a general term for computer, communication and consumer electronic products, such as computers, tablet computers, mobile phones or digital audio players. In recent years, the automated assembly technology of 3C products has developed rapidly, and manufacturers have increasingly high requirements for the assembly of some accessories. Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a small shrapnel currently installed on the middle frame of a mobile phone. The overall dimensions of this type of shrapnel are approximately 2x6mm, and the thickness of the shrapnel is only 0.08mm. Small screws are used to lock and secure it to the specified position in the middle frame of the mobile phone through the through holes on the small shrapnel. There are a total of 9 screws. The specifications of the small screws are Mx0.25, the length is 1mm, and the nut diameter is 2mm. These screws have an aspect ratio of less than 1. These small screws cannot be fed by air blowing and can only be fed by a professional screw feeder. At the same time, the problem is that each time a screw is fastened, it is necessary to take a screw from the top of the screw feeder and then move it to the screw locking position to tighten the screw. The electric screwdriver needs to complete at least multiple actions such as rising → translating → descending to take the screw → rising again → translating. In actual application, this method has the following problems:

[0003] 1) The screw lock position is far away from the feeder, which wastes time and affects work efficiency and beat;

[0004] 2) During the process of transferring the small screws to the screw locking position, the position of the small screws may shift, resulting in locking failure and poor locking accuracy. Summary of the Invention

[0005] The purpose of the present invention is to provide a small screw material storage magazine, a feeding module and a screw locking device to solve the problems in the existing technology that in the process of locking small screws, it is necessary to take materials from a special feeder and then move them to the locking position for locking, resulting in a long locking stroke and poor locking accuracy.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A small screw storage clip comprises a base body. The base body is provided with a plurality of holes for placing the small screws. The diameters of the holes are larger than the diameters of the heads of the small screws.

[0008] Furthermore, the base is provided with a positioning component for positioning the base.

[0009] Preferably, the positioning component is any one of a positioning groove or a retractable protruding component provided on the base.

[0010] Furthermore, the plurality of holes are arranged in at least one row along the length direction of the substrate.

[0011] A small screw feeding module comprises a screw feeder, a screw suction nozzle, a loading and transferring module and a double-station storage component, wherein the screw feeder is configured to automatically provide screws, the screw suction nozzle is assembled on the loading and transferring module, the double-station storage component comprises a full station and an empty station, the full station and / or the empty station are detachably provided with the above-mentioned small screw storage clip as needed, and the loading and transferring module is configured to drive the screw suction nozzle to take material from the screw feeder and transport the material and place it in the hole on the small screw storage clip.

[0012] Furthermore, the loading and transferring module adopts a PPU manipulator for fixed-distance handling, and the double-station storage assembly is fixedly mounted on the output flange of the X-axis handling module. The X-axis handling module is fixed on the Y-direction movable seat along the X-axis direction, and the Y-direction movable seat is fixedly mounted on the output flange of the Y-axis handling module. After the PPU manipulator places a material in the first hole on the small screw storage clip, the X-axis handling module drives the small screw storage clip to move a step distance, and the PPU manipulator then transports the next material and places it in the next hole adjacent to the first hole along the X-axis direction on the small screw storage clip. The Y-axis handling module drives the small screw storage clip to switch between the full material station and the empty material station.

[0013] Furthermore, the dual-station storage assembly includes a first magazine, which has a storage cavity, and a full station and an empty station are arranged side by side in the storage cavity. An avoidance hole is provided on the first magazine corresponding to the opening of the small screw storage clip, and the small screws are placed in the hole on the small screw storage clip through the avoidance hole.

[0014] Preferably, the base adopts a long strip structure, and positioning grooves are provided on both sides of its two ends. A clamping cylinder is installed at the full and empty stations of the first magazine to match the positioning grooves, and a magazine positioning clamp is installed on the clamping cylinder to match the positioning grooves.

[0015] A small screw locking device includes the above-mentioned small screw feeding module and the screw locking module, the screw locking module includes a mounting seat, an electric screwdriver, an electric screwdriver lifting module and a magazine shifting module, the electric screwdriver lifting module is assembled on the mounting seat along the height direction, the electric screwdriver is mounted on the electric screwdriver lifting module, the magazine shifting module is assembled on the bottom of the mounting seat along the horizontal direction, the output flange of the magazine shifting module is fixedly connected to a follower seat, and the follower seat is provided with a second magazine located below the electric screwdriver, and the small screw storage magazine filled with materials is detachably arranged in the second magazine.

[0016] Furthermore, an assembly cavity is provided in the second magazine, and two telescopic plungers are installed on both sides of the assembly cavity in cooperation with the positioning grooves on the base. A coil spring is provided between the telescopic plunger and the second magazine, and an avoidance hole is provided on the second magazine corresponding to the opening of the small screw storage clip. The electric screwdriver takes material from the hole on the small screw storage clip through the avoidance hole.

[0017] The beneficial effect of the present invention is that compared with the existing technology, the small screw storage clip, feeding module and screw locking device adopt a clip-type loading and storage method, and the electric screwdriver adopts a follow-up material taking method when taking materials, which can realize efficient and stable material taking of the electric screwdriver. It is not only compact in structure and ingenious in design, but also has high working efficiency, can ensure the locking accuracy of small screws, and has a low defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a small shrapnel currently installed on the middle frame of a mobile phone;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of a small screw locking device provided by an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of a small screw feeding module provided by one embodiment of the present invention;

[0021] Figure 4 This is a front view of a small screw feeding module provided by one embodiment of the present invention;

[0022] Figure 5 This is a side view of a small screw feeding module provided by one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of a small screw storage magazine provided by one embodiment of the present invention;

[0024] Figure 7 This is an exploded schematic diagram of a double-station material storage assembly provided by one embodiment of the present invention;

[0025] Figure 81 is a side view of a double-station material storage assembly provided by one embodiment of the present invention;

[0026] Figure 9 1 is a top view of a double-station material storage assembly provided by one embodiment of the present invention;

[0027] Figure 10 It is a schematic diagram of the three-dimensional structure of a screw locking module provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosure of the present invention. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there can also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the relevant listed items.

[0030] See also Figure 2 As shown, Figure 2It is a schematic diagram of the three-dimensional structure of a small screw locking device provided by an embodiment of the present invention. In this embodiment, a small screw locking device includes a frame 1, a small screw feeding module 2, a locking screw module 3, a product transfer module 4 and a product carrier 5. The frame 1 serves as the assembly basis of the entire device. The small screw feeding module 2, the locking screw module 3, the product transfer module 4 and the product carrier 5 are respectively installed on the frame 1. The locking screw module 3 and the product transfer module 4 are both located on the same side of the small screw feeding module 2. The product transfer module 4 is located below the locking screw module 3. The product carrier 5 is fixedly installed on the output flange of the product transfer module 4. The product transfer module 4 moves the product carrier 5 to the locking station of the locking screw module 3. The small screw feeding module 2 is configured to automatically supply small screws for locking to the locking screw module 3. The locking screw module 3 automatically locks the corresponding small springs to the specified position of the product through the small screws.

[0031] See also Figures 3 to 5 As shown, the small screw feeding module 2 includes a screw feeder 20, a screw suction nozzle 21, a PPU manipulator 22 and a double-station storage component 23. The screw feeder 20 is fixedly mounted on the frame 1, the PPU manipulator 22 is mounted above the screw feeder 20, and the screw suction nozzle 21 is mounted at the power output end of the PPU manipulator 22. The PPU manipulator 22 adopts a fixed-distance conveying method. Through the limit groove of its inverted "U"-shaped structure and in conjunction with the guide support mechanism equipped with the X-axis and Y-axis directions, the screw suction nozzle 21 is driven to descend and take the material from the discharge port of the screw feeder 20, and then rises along the X-axis direction for fixed-distance transportation, and then descends to place the small screw on the double-station storage component 23, and then returns to its position, and repeats this process to achieve fast-paced feeding. The double-station material storage assembly 23 is fixedly mounted on the output flange of the X-axis conveying module 24, the X-axis conveying module 24 is fixed to the top of the Y-axis movable seat 25 along the X-axis direction, the Y-axis movable seat 25 is fixedly mounted on the output flange of the Y-axis conveying module 26, and the Y-axis conveying module 26 is mounted on one side of the screw feeder 20.

[0032] See also Figures 6 to 9As shown, the double-station material storage assembly 23 adopts a clip-type material storage, including a base and a first magazine 230 installed on the base. The base is fixedly connected to the output flange of the X-axis transport module 24. The first magazine 230 has a storage cavity 231. A full material station 232 and an empty material station 233 are arranged in parallel in the storage cavity 231. A storage clip 234 can be detachably provided on the full material station 232 and / or the empty material station 233 as needed. The storage clip 234 includes a base 235 of an elongated structure. A row of holes 236 are spaced apart along the length of the first magazine 230. The diameter of the holes 236 is larger than the diameter of the heads of the small screws. Positioning slots 237 are symmetrically provided on the two side walls of the base 235 at both ends. Gripping cylinders 238 are installed at both the full material station 232 and the empty material station 233. Clip positioning jaws 239 are mounted on the gripping cylinders 238 and match the positioning slots 237. After the storage clip 234 is inserted into the first magazine 230, the clip positioning jaws 238 clamp and position the storage clip 234. Furthermore, a long, strip-shaped avoidance hole 240 is provided in the first magazine 230 corresponding to the opening of the storage clip 234. This allows the holes 236 in the storage clip 234 to be exposed, ensuring that no interference occurs when the small screw is placed in the hole 236 of the storage clip 234.

[0033] See also Figure 10 As shown, Figure 10 The figure is a schematic diagram of the three-dimensional structure of a screw locking module provided by one embodiment of the present invention. The screw locking module 3 includes a mounting base 30, an electric screwdriver 31, an electric screwdriver lifting module 32, and a magazine shifting module 33. The mounting base 30 is fixedly connected to a transverse module. The electric screwdriver lifting module 32 is assembled to the mounting base 30 in the vertical direction. The electric screwdriver 31 is mounted on the electric screwdriver lifting module 32. The electric screwdriver 31 is driven by the electric screwdriver lifting module 32 to move up and down. The magazine shifting module 33 is assembled to the bottom of the mounting base 30 in the horizontal direction. The electric screwdriver lifting module 32 and the magazine shifting module 33 are both driven by a servo motor and a ball screw. The output flange of the magazine shifting module 33 is fixedly connected to a follower base 34. The follower base 34 is provided with a second magazine 35 located below the electric screwdriver 31. The second magazine 35 is detachably provided with a storage magazine 234 containing materials. An assembly cavity is also provided in the second magazine 35, and two telescopic plungers are installed on both sides of the assembly cavity in cooperation with the positioning grooves on the base 235. A coil spring is provided between the telescopic plunger and the second magazine 35, and an avoidance hole 240 is also provided at the opening portion of the second magazine 35 corresponding to the storage clip 234 to expose the hole 236 on the storage clip 234, thereby ensuring that the electric screwdriver 31 will not interfere when taking materials from the hole 236 on the storage clip 234.

[0034] The specific working principle of the above-mentioned small screw locking device is as follows:

[0035] When loading the material storage clip 234, in the initial state, both the full material station 232 and the empty material station 233 are provided with empty material storage clips 234. At this time, the full material station 232 is in the loading position. The PPU manipulator 22 drives the screw suction nozzle 21 to suck a small screw from the screw feeder 20 and moves it to the material storage clip 234 at the full material station 232, and places the small screw in the first hole 236 of the material storage clip 234. The X-axis transport module 24 drives the material storage clip 234 to move a step distance so that the adjacent hole positions match the transport distance of the PPU manipulator 22. The PPU manipulator 22 then transports the next small screw and places it in an adjacent hole, and repeats this process until all the holes 236 on the material storage clip 234 at the full material station 232 are filled with small screws.

[0036] When the locking screw module 3 takes the storage clip 234, the clip shifting module 33 drives the follower seat 34 to move toward the storage clip 234 near the full material station 232. Because the assembly cavity of the second magazine 35 corresponds to the position of the full material station 232, the storage clip 234 at the full material station 232 is automatically inserted into the second magazine 35. The storage clip 234 is limited by the telescopic plunger, and the clamping cylinder 238 in the first magazine 230 drives the clip positioning clamping claw 238 to loosen, that is, the positioning of the storage clip 234 is released, and the clip shifting module 33 moves to the storage clip 234 away from the full material station 232, and the material taking is completed.

[0037] After the material is taken, the Y-axis transport module drives the Y-axis moving seat 25 to move a step along the Y-axis, moves the empty material station 233 to the loading position, and then loads the empty material storage clip 234 at the empty material station 233 through the PPU manipulator 22 and the screw nozzle 21.

[0038] After the small screws are used up, the storage clip 234 in the second magazine 35 needs to be replaced. During the replacement, the full station 232 is empty, and the loading of the storage clip 234 at the empty station 233 is completed. The Y-axis transport module drives the Y-axis movable seat 25 to move so that the full station 232 corresponds to the position of the storage clip 234 in the second magazine 35. The clip shifting module 33 drives the follower seat 34 to move and finally the empty storage clip 234 in the second magazine 35 is automatically inserted and positioned on the full station 232, and then returns to its position. The Y-axis transport module drives the Y-axis movable seat 25 to move again so that the empty station 233 corresponds to the position of the assembly cavity of the second magazine 35, and repeats the above-mentioned action of the screw locking module 3 taking the storage clip 234.

[0039] During the screw locking process, the screw locking module 3 adopts a follow-up loading method, that is, the electric screwdriver 31 only performs the actions of lifting and lowering to take materials and lock screws. When taking screws, the clip shifting module 33 drives the follower seat 34 to move so that the hole for small screws on the storage clip 234 inside it moves to directly below the electric screwdriver 31. The electric screwdriver lifting module 32 drives the electric screwdriver 31 to descend to take out the small screws and then rises. The clip shifting module 33 drives the follower seat 34 to move to avoid it. The electric screwdriver lifting module 32 drives the electric screwdriver 31 to descend again to automatically lock the small screws to the specified position of the product.

[0040] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to these examples. Various modifications and variations are possible without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A small screw locking device, characterized in that: It includes a small screw feeding module and a screw locking module. The screw locking module includes a mounting seat, an electric screwdriver, an electric screwdriver lifting module and a magazine shifting module. The electric screwdriver lifting module is assembled on the mounting seat in the height direction, the electric screwdriver is mounted on the electric screwdriver lifting module, and the magazine shifting module is assembled on the bottom of the mounting seat in the horizontal direction. A follower seat is fixedly connected to the output flange of the magazine shifting module. A second magazine located below the electric screwdriver is provided on the follower seat. A small screw storage magazine filled with materials is detachably arranged in the second magazine. The small screw feeding module includes a screw feeder, a screw suction nozzle, a loading and transferring module and a double-station storage component. The screw feeder is configured to automatically provide screws. The screw suction nozzle is assembled on the loading and transferring module. The double-station storage component includes a full material station and an empty material station. The full material station and / or the empty material station are detachably provided with a small screw storage clip as needed. The loading and transferring module is configured to drive the screw suction nozzle to take material from the screw feeder and transport the material and place it into the hole on the small screw storage clip. The double-station material storage assembly includes a first magazine, wherein the first magazine has a material storage cavity, wherein a full material station and an empty material station are arranged side by side in the material storage cavity, and an avoidance hole is opened on the first magazine corresponding to the opening of the small screw material storage clip, and the small screw is placed in the hole on the small screw material storage clip through the avoidance hole; The small screw storage magazine includes a base body, which is provided with a plurality of holes for placing small screws, and the diameter of the holes is larger than the diameter of the heads of the small screws.

2. The small screw locking device according to claim 1, characterized in that: The base is provided with a positioning component for positioning the base.

3. The small screw locking device according to claim 2, characterized in that: The positioning component is any one of a positioning groove or a retractable protruding component provided on the base.

4. The small screw locking device according to claim 1, characterized in that: The plurality of holes are arranged in at least one row along the length direction of the base body.

5. The small screw locking device according to claim 1, characterized in that: The loading and transferring module adopts a PPU manipulator for fixed-distance handling. The double-station material storage component is fixedly installed on the output flange of the X-axis handling module. The X-axis handling module is fixed on the Y-direction movable seat along the X-axis direction. The Y-direction movable seat is fixedly installed on the output flange of the Y-axis handling module.

6. The small screw locking device according to claim 1, characterized in that: The base adopts a long strip structure, and positioning grooves are provided on both sides of its two ends. Clamping cylinders are installed at the full and empty stations of the first magazine in conjunction with the positioning grooves. The clamping cylinders are equipped with magazine positioning clamps that are arranged in conjunction with the positioning grooves.

7. The small screw locking device according to claim 1, characterized in that: An assembly cavity is provided in the second magazine, and two telescopic plungers are installed on both sides of the assembly cavity to cooperate with the positioning grooves on the base. A coil spring is provided between the telescopic plunger and the second magazine, and an avoidance hole is provided on the second magazine corresponding to the opening of the small screw storage clip. The electric screwdriver takes material from the hole on the small screw storage clip through the avoidance hole.

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