Screw feeder with screening and sorting functions

Abstract

The invention belongs to the technical field of automatic feeding equipment, and provides a screw feeder with screening and sorting functions. The feeding disc is arranged on the feeding platform, and a station used for placing screws is arranged on the feeding disc; the first screening piece is arranged below the feeding platform and used for sorting the long screws, the first screening piece comprises a first screening part and a jacking part, at least part of the first screening part is blocked on the movement path of the long screws, and the jacking part is used for jacking the screws passing through the first screening part from the station; the second screening part is arranged on the feeding platform and used for sorting the short screws, the second screening part comprises a feeding channel and a second screening part, and a discharging opening and the second screening part are oppositely arranged on the two sides, in the width direction, of the feeding channel; rapid screening and sorting of the screws can be achieved through a mechanical structure, the structure is simple, operation is convenient and fast, a height gauge does not need to be adopted for screw length judgment, the use and maintenance cost of instruments is saved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automated feeding equipment, and in particular to a screw feeder with screening and sorting functions. Background Art

[0002] The screw feeder is an automated assembly equipment, which is mainly used to feed screws to the assembly line according to a certain pattern and speed. It can improve production efficiency, reduce manual operations and ensure assembly quality, so it is widely used in various assembly operations.

[0003] In the related art, in order to prevent screws from being mixed, a height gauge is usually added to the screw feeder to judge the length of the screws so as to screen and sort the screws to avoid mixing and affect production. However, the height gauge is easily damaged as a measuring instrument, resulting in high use and maintenance costs and high production costs. Summary of the invention

[0004] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a screw feeder with screening and sorting functions, so as to solve the problem of high cost of the screening and sorting method of the screw feeder in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the present application provides a screw feeder with screening and sorting functions, comprising:

[0006] Loading platform;

[0007] A feed tray is arranged on the feeding platform, and a station for placing screws is arranged on the feed tray. The feed tray can rotate along its own central axis on the feeding platform, and the screws are placed on the station and keep synchronous movement with the feed tray;

[0008] A first screening member is arranged below the feeding platform, the first screening member is used to sort the long screws, the first screening member comprises a first screening part and a lifting part, the first screening part at least partially blocks the movement path of the long screws, and the long screws are blocked by the first screening part and leave the station in the process of following the movement of the feeding tray, and the lifting part is used to lift the screws passing through the first screening part from the station;

[0009] The second screening member is arranged on the feeding platform, and the second screening member is used for sorting short screws. The second screening member includes a feeding channel and a second screening part. The feeding channel is provided with a drop opening and the second screening part on both sides along the width direction. The screws passing through the first screening part enter the feeding channel and are lifted from the work station by the lifting part. In the process that the short screws follow the movement of the feeding tray, the second screening part protrudes from the movement path of the short screws, and the short screws are blocked by the second screening part. The second screening part pushes the short screws out of the work station and into the drop opening.

[0010] Optionally, the screws include standard screws, long screws and short screws, the standard screws are screws that meet the length requirement, the long screws are screws whose length is greater than the length requirement, and the short screws are screws whose length is less than the length requirement.

[0011] Optionally, the lifting portion is configured as an inclined structure connected to the first screening portion, the inclined structure comprises an inclined section and a straight section, and two ends of the inclined section are respectively connected to the straight section and the first screening portion.

[0012] Optionally, the second screening portion is configured as an arc-shaped boss structure, the distance between the top surface of the straight section and the top surface of the boss structure is greater than the screw length of the short screw and less than or equal to the screw length of the standard screw, and the distance between the top surface of the straight section and the bottom surface of the boss structure is less than the overall length of the short screw.

[0013] Optionally, the distance between the top surface of the first screening portion and the top surface of the feed tray is greater than or equal to the screw length of the standard screw and less than the screw length of the long screw.

[0014] Optionally, a window communicating with the feed channel is further provided on the second screening member, and the window is used to view the screening status of the short screws.

[0015] Optionally, the screw feeder further comprises a material guide trough arranged at the bottom of the feeding platform, and the material guide trough is used to recover the sorted long screws and the short screws.

[0016] Optionally, the first screening part and the loading platform have an inclined guide surface on the side close to the supply tray, the long screw is blocked by the first screening part and disengaged from the work station, the nut of the long screw is hung on the surface of the loading platform, and falls into the guide trough under the guidance of the guide surface.

[0017] Optionally, the second screening member, the loading platform, the first screening member and the material guiding trough are stacked in sequence.

[0018] Optionally, a driving member for driving the supply tray to rotate is also provided at the bottom of the supply tray.

[0019] In the screw feeder with screening and sorting functions provided in the present application, the screws are first placed on the work station, and the feed tray is rotated. The screws will move with the feed, and the long screws will be blocked by the first screening part of the first screening component and leave the work station to be sorted out. The short screws and the standard screws will not be blocked and continue to move with the feed tray to enter the feed channel. The lifting part will lift the short screws and the standard screws from the work station. Since the short screws are shorter than the standard screws, the nuts of the short screws will be blocked by the second screening part. The second screening part pushes the short screws out of the work station and into the drop port, thereby sorting out the short screws, and the standard screws will not be blocked by the second screening part and continue to rotate with the feed tray and leave the feed channel to complete the sorting of the standard screws. The mechanical structure can be used to realize rapid screening and sorting of screws. The structure is simple and the operation is convenient. There is no need to use a height gauge to determine the length of the screws, which saves the use and maintenance costs of the instrument and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a screw feeder with screening and sorting functions when sorting long screws, shown in Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic structural diagram of a screw feeder with screening and sorting functions when sorting standard screws, as shown in Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a first screening element shown in Embodiment 1 of the present invention;

[0023] Figure 4 A schematic structural diagram of a second screening element from a first viewing angle shown in Embodiment 1 of the present invention;

[0024] Figure 5 A schematic structural diagram of a second screening element from a second viewing angle shown in the first embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of a portion of the structure of a screw feeder with screening and sorting functions when sorting standard screws, as shown in Embodiment 1 of the present invention;

[0026] Figure 7 This is a partial structural schematic diagram of a screw feeder with screening and sorting functions when sorting short screws, shown in Embodiment 1 of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of a screw feeder with screening and sorting functions shown in the second embodiment of the present invention.

[0028] Part Number Description

[0029] 1-loading platform; 2-feeding tray; 3-workstation; 4-first screening part; 5-second screening part; 6-feeding channel; 7-window; 8-first screening part; 9-material guide trough; 10-long screw; 11-driving part; 12-standard screw; 13-guide surface; 14-inclined section; 15-straight section; 16-dropping port; 17-second screening part; 18-short screw; 19-limiting part; 20-mounting seat. DETAILED DESCRIPTION

[0030] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the effects that can be produced by this application and the purposes that can be achieved. At the same time, the terms such as "front", "back", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the implementation of this application. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of this application without substantial changes in the technical content.

[0032] Example 1: Please refer to Figures 1 to 7 The present application exemplarily provides a screw feeder with screening and sorting functions, comprising:

[0033] Loading platform 1;

[0034] A feed tray 2 is arranged on the loading platform 1. A station 3 for placing screws is arranged on the feed tray 2. The feed tray 2 can rotate along its own central axis on the loading platform 1. The screws are placed on the station 3 and keep synchronous movement with the feed tray 2.

[0035] The first screening member 4 is arranged below the feeding platform 1. The first screening member 4 is used to sort the long screws 10. The first screening member 4 includes a first screening portion 8 and a lifting portion. The first screening portion 8 at least partially blocks the movement path of the long screws 10. When the long screws 10 follow the movement of the feeding tray 2, they are blocked by the first screening portion 8 and leave the station 3. The lifting portion is used to lift the screws passing through the first screening portion 8 from the station 3.

[0036] The second screening component 5 is arranged on the loading platform 1. The second screening component 5 is used for sorting short screws 18. The second screening component 5 includes a feeding channel 6 and a second screening part 17. The feeding channel 6 is provided with a drop port 16 and a second screening part 17 on both sides along the width direction. The screws passing through the first screening part 8 enter the feeding channel 6 and are lifted from the workstation 3 by the lifting part. In the process of the short screw 18 following the movement of the feed tray 2, the second screening part 17 protrudes from the movement path of the short screw 18. The short screw 18 is blocked by the second screening part 17. The second screening part 17 pushes the short screw 18 out of the workstation 3 and into the drop port 16.

[0037] In the installation structure provided in the present application, the screws are first placed on the work station 3, and the feed tray 2 is rotated. The screws will move with the feed, and the long screws 10 will be blocked by the first screening part 8 of the first screening component 4 and leave the work station 3 to be sorted out. The short screws 18 and the standard screws 12 will not be blocked and continue to move with the feed tray 2 to enter the feed channel 6. The lifting part will lift the short screws 18 and the standard screws 12 from the work station 3. Since the short screws 18 are shorter than the standard screws 12, the nuts of the short screws 18 will be blocked by the second screening part 17. The second screening part 17 pushes the short screws 18 out of the work station 3 and into the drop port 16, thereby sorting out the short screws 18, and the standard screws 12 will not be blocked by the second screening part 17 and continue to rotate with the feed tray 2 to leave the feed channel 6, completing the sorting of the standard screws 12. The mechanical structure can be used to realize rapid screening and sorting of screws. The structure is simple and the operation is convenient. There is no need to use a height gauge to determine the screw length, which saves the use and maintenance costs of the instrument and reduces production costs.

[0038] It should be noted that, in the present embodiment, the screws include standard screws 12, long screws 10 and short screws 18. The standard screws 12 are screws that meet the length requirements, the long screws 10 are screws whose length is greater than the length requirements, and the short screws 18 are screws whose length is less than the length requirements. In the production of existing laptop computers, screws of different lengths need to be used for assembly, and different assembly processes have different requirements for the length of the screws. When the screws are mixed, if screws that do not meet the length requirements are used during assembly, it is easy to cause the long screws 10 to penetrate the boss column and the motherboard, and the use of short screws 18 will affect the assembly production efficiency. Therefore, for a certain assembly process, it is necessary to screen and sort out the screws that meet the length requirements. This part of the screws that meet the length requirements is the standard screws 12 in the current assembly process, the screws that are too long are the long screws 10, and the screws that are too short are the short screws 18. The screw feeder provided in the present application can not only screen and sort out the standard screws 12 for a certain process, but also screen and sort the screws before the assembly process for subsequent production and use. This is not limited here.

[0039] In this embodiment, the lifting part is configured as an inclined structure connected to the first screening part 8, and the inclined structure includes an inclined section 14 and a straight section 15. The two ends of the inclined section 14 are respectively connected to the straight section 15 and the first screening part 8. Specifically, the short screw 18 or the standard screw 12 will not be blocked by the first screening part 8. The short screw 18 or the standard screw 12 is continuously lifted by the inclined section 14, so that the short screw 18 or the standard screw 12 is lifted on the work station 3.

[0040] In some embodiments, the second screening portion 17 is configured as an arc-shaped boss structure, and the distance between the top surface of the straight section 15 and the top surface of the boss structure is greater than the screw length of the short screw 18 and less than or equal to the screw length of the standard screw 12, and the distance between the top surface of the straight section 15 and the bottom surface of the boss structure is less than the overall length of the short screw 18. Specifically, after the short screw 18 or the standard screw 12 is lifted by the lifting portion, on the straight section 15, the short screw 18 or the standard screw 12 uses the bottom as a reference plane, and when the short screw 18 passes through the boss structure, since the length of the short screw 18 is smaller than that of the standard screw 12, the nut of the short screw 18 is blocked by the boss structure, and the short screw 18 moves along the boss structure, is pushed out of the work station 3 and is pushed into the drop port 16, while the nut of the standard screw 12 is not blocked by the boss structure, and the standard screw 12 continues to follow the feed tray 2 on the work station 3 to move out of the feed channel 6.

[0041] In some embodiments, the distance between the top surface of the first screening portion 8 and the top surface of the feed tray 2 is greater than or equal to the screw length of the standard screw 12 and less than the screw length of the long screw 10. Specifically, the work station 3 is a U-shaped groove with an opening, and the screw is placed on the work station 3. The bottom of the screw nut is in contact with the surface of the feed tray 2. When the long screw 10 moves with the feed tray 2, the bottom of the nut is used as the reference plane. Since the length of the long screw 10 is greater than that of the standard screw 12, the screw of the long screw 10 will be blocked by the first screening portion 8 and then detached from the work station 3, while the screws of the standard screw 12 and the short screw 18 will not be blocked by the first screening portion 8 and continue to move with the feed tray 2 into the feed channel 6.

[0042] It is understandable that the workstation 3 on the feed tray 2 of the present application can be set to one or more, and multiple workstations 3 can sort the long screws 10, short screws 18 and standard screws 12 at the same time.

[0043] In the above embodiment, a window 7 connected to the feed channel 6 is also provided on the second screening member 5. The window 7 is used to view the screening status of the short screws 18. The operator can observe the screening status of the short screws 18 through the window 7 to facilitate timely adjustment to avoid jamming of the feed tray 2.

[0044] In this embodiment, the screw feeder also includes a material guide trough 9 arranged at the bottom of the loading platform 1, and the material guide trough 9 is used to recover the sorted long screws 10 and short screws 18. Specifically, the notch of the material guide trough 9 corresponds to the position of the first screening part 8 and the drop port 16, and is arranged at the bottom of the two. When the long screw 10 or the short screw 18 leaves the work station 3, it falls into the notch of the material guide trough 9 under the action of gravity to complete the recovery.

[0045] In some embodiments, the first screening part 8 and the loading platform 1 have an inclined guide surface 13 on the side close to the supply tray 2, and the guide surface 13 of the loading platform 1 forms a notch at a position close to the first screening part 8. The long screw 10 is blocked by the first screening part 8 and detaches from the workstation 3 from the notch along the guide surface 13 of the first screening part 8. The nut of the long screw 10 is hung on the surface of the loading platform 1 and falls into the material guide trough 9 under the guidance of the guide surface 13 of the loading platform 1. Specifically, when the long screw 10 is blocked by the first screening part 8 and detaches from the workstation 3, the nut of the long screw 10 is hung on the surface of the loading platform 1, and the screw of the long screw 10 slides toward the direction close to the material guide trough 9 under the guidance of the guide surface 13 and under the action of inertia, and finally falls into the notch of the material guide trough 9 under the action of gravity.

[0046] In this embodiment, the second screening member 5, the feeding platform 1, the first screening member 4 and the material guide trough 9 are stacked in sequence. The stacking arrangement can reduce the installation space occupied by the screw feeder and make the structure more compact.

[0047] In this embodiment, a driving member 11 for driving the feeding tray 2 to rotate is also provided at the bottom of the feeding tray 2. Specifically, the driving member 11 can be a motor, a cylinder or other element that can provide driving force, which is not limited here.

[0048] Embodiment 2: The technical solution of Embodiment 2 is basically the same as that of Embodiment 1, except that:

[0049] like Figure 8As shown, in the present embodiment, a mounting seat 20 is provided on the side of the second screening member 5 close to the first screening portion 8, and a limiting member 19 is rotatably provided on the mounting seat 20, and the limiting member 19 is bent and extended from the mounting seat 20 to the notch and close to the feed tray 2, and the limiting member 19 is blocked at the notch, and there is a gap between the limiting member 19 and the feed tray 2. During the rotation of the feed tray 2, the rotation speed of the feed tray 2 needs to be adjusted according to production requirements. If the rotation speed of the feed tray 2 is too fast, the screws on the work station 3 may be affected by inertia and detach from the work station 3. The limiting member 19 can prevent the screws on the work station 3 from being affected by inertia and detaching and falling. Specifically, a torsion spring can be provided on the mounting seat 20 or the limiting member 19 can be connected to the mounting seat 20 in a hinged manner. The limiting member 19 can rotate on the mounting seat 20 to leave the notch or reset. The connection method between the limiting member 19 and the mounting seat 20 is not limited herein.

[0050] In summary, in the screw feeder with screening and sorting function provided by the present application, the screws are first placed on the station 3, the feed tray 2 is rotated, the screws will move with the feed, the long screws 10 will be blocked by the first screening part 8 of the first screening member 4 and will leave the station 3 to be sorted out, the short screws 18 and the standard screws 12 will not be blocked and will continue to move with the feed tray 2 to enter the feed channel 6, the lifting part will lift the short screws 18 and the standard screws 12 from the station 3, because the short screws 18 are shorter than the standard screws 12, the short screws 18 and the standard screws 12 will be lifted from the station 3. The nut of the screw 18 will be blocked by the second screening part 17, and the second screening part 17 will push the short screw 18 out of the work station 3 and into the drop port 16, so as to sort out the short screw 18. The standard screw 12 will not be blocked by the second screening part 17 and will continue to rotate with the feed tray 2 and leave the feed channel 6, thus completing the sorting of the standard screw 12. The mechanical structure can realize the rapid screening and sorting of the screws, with a simple structure and convenient operation. There is no need to use a height gauge to determine the screw length, which saves the use and maintenance costs of the instrument and reduces the production cost.

[0051] The above embodiments are merely illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A screw feeder with screening and sorting function, characterized in that: include: Loading platform; A feed tray is arranged on the feeding platform, and a station for placing screws is arranged on the feed tray. The feed tray can rotate along its own central axis on the feeding platform, and the screws are placed on the station and keep synchronous movement with the feed tray; A first screening member is arranged below the feeding platform, the first screening member is used to sort the long screws, the first screening member comprises a first screening part and a lifting part, the first screening part at least partially blocks the movement path of the long screws, when the long screws follow the movement of the feeding tray, the screws of the long screws are blocked by the first screening part and leave the station, and the lifting part is used to lift the screws passing through the first screening part from the station; The second screening member is arranged on the feeding platform, and the second screening member is used for sorting short screws. The second screening member includes a feeding channel and a second screening part. The feeding channel is provided with a drop-out port and the second screening part on both sides along the width direction. The screws passing through the first screening part enter the feeding channel and are lifted from the workstation by the lifting part. In the process that the short screw follows the movement of the feeding tray, the second screening part protrudes from the movement path of the short screw, and the nut of the short screw is blocked by the second screening part. The second screening part pushes the short screw out of the workstation and into the drop-out port.

2. The screw feeder according to claim 1, characterized in that: The screws include standard screws, long screws and short screws. The standard screws are screws that meet the length requirements, the long screws are screws whose length is greater than the length requirements, and the short screws are screws whose length is less than the length requirements.

3. The screw feeder according to claim 2, characterized in that: The lifting portion is configured as an inclined structure connected to the first screening portion, the inclined structure includes an inclined section and a straight section, and two ends of the inclined section are respectively connected to the straight section and the first screening portion.

4. The screw feeder according to claim 3, characterized in that: The second screening portion is configured as an arc-shaped boss structure, the distance between the top surface of the straight section and the top surface of the boss structure is greater than the screw length of the short screw and less than or equal to the screw length of the standard screw, and the distance between the top surface of the straight section and the bottom surface of the boss structure is less than the overall length of the short screw.

5. The screw feeder according to claim 2, characterized in that: The distance between the top surface of the first screening portion and the top surface of the feed tray is greater than or equal to the screw length of the standard screw and less than the screw length of the long screw.

6. The screw feeder according to claim 2, characterized in that: The second screening member is also provided with a window connected to the feed channel, and the window is used to view the screening status of the short screws.

7. The screw feeder according to claim 2, characterized in that: It also includes a material guide trough arranged at the bottom of the feeding platform, and the material guide trough is used to recycle the sorted long screws and the short screws.

8. The screw feeder according to claim 7, characterized in that: The first screening part and the loading platform have an inclined guide surface on the side close to the supply tray. The long screw is blocked by the first screening part and disengaged from the work station. The nut of the long screw is hung on the surface of the loading platform and falls into the guide trough under the guidance of the guide surface.

9. The screw feeder according to claim 7, characterized in that: The second screening member, the loading platform, the first screening member and the material guide trough are stacked in sequence.

10. The screw feeder according to claim 1, characterized in that: The bottom of the material supply tray is also provided with a driving member for driving the material supply rotating tray.

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