Automatic width adjusting mechanism and conveying platform

Abstract

The utility model relates to an automatic width adjusting mechanism and a conveying platform. The automatic width adjusting mechanism comprises a first guiding piece, a second guiding piece and a third guiding piece. The first guiding piece, the second guiding piece and the third guiding piece are arranged at intervals in the direction parallel to the conveying direction of the conveying face, the second guiding piece can ascend and descend between the first height and the second height, and the first height is higher than the second height. When the second guide piece is located at the first height, the second guide piece and the first guide piece can guide a turnover basket bearing a PCB or a tool carrier clamping the PCB to move along a conveying face located between the second guide piece and the first guide piece. Or the second guide piece and the third guide piece can guide the turnover basket or the tool carrier to move along the conveying surface between the second guide piece and the third guide piece. When the second guide piece is located at the second height, the first guide piece and the third guide piece can guide the turnover basket or the tool carrier to move along the conveying face located between the first guide piece and the third guide piece.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying platforms, in particular to an automatic width adjustment mechanism and a conveying platform. Background Art

[0002] SMT (Surface Mount Technology) is the electronic circuit surface assembly technology, also known as surface mounting or surface mounting technology. It is the most popular technology and process in the electronic assembly industry. In the workshop where SMT patch molding PCB boards are produced, the automatic loading and unloading and transportation of the turnover baskets and tooling tools with a cube structure that carry or clamp PCB boards is realized through the conveying platform of the SMT loading and unloading robot. The conveying platform is vertically provided with side guards on both sides perpendicular to the conveying direction to guide the turnover baskets and tooling tools to move along the conveying direction to avoid the turnover baskets and tooling tools from tilting. In order to realize the operation of turnover baskets and tooling tools of different widths that carry or clamp PCB boards of different models, a width adjustment mechanism for adjusting the width between the two side guards is also provided on the conveying platform.

[0003] At present, there are two ways to adjust the width: manual adjustment and automatic adjustment. In the manual adjustment method, the width spacing of the two side guards is adjusted by manually installing and removing the side guards. The operation is complicated and it is difficult to ensure consistency. It is not suitable for scenarios where multiple stations are working at the same time, and it will also affect production efficiency and production quality. In the automatic adjustment method, the width is adjusted through a synchronous belt or lead screw drive mechanism, which is extended along the width direction of the conveying platform. There is a problem of occupying a large space in the width direction of the conveying platform, which increases the difficulty of manufacturing the conveying platform. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides an automatic width adjustment mechanism and a conveying platform, which solve the technical problems of the manual width adjustment method in the prior art, such as the complex operation and low consistency, and the technical problem of the automatic adjustment method, such as the large space occupied.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] In a first aspect, the utility model provides an automatic width adjustment mechanism, comprising a first guide member, a second guide member and a third guide member;

[0009] The first guide, the second guide and the third guide are sequentially arranged parallel to the conveying direction of the conveying surface and spaced apart from each other, the second guide can be lifted and lowered between a first height and a second height, and the first height is higher than the second height;

[0010] When the second guide is at the first height, the second guide and the first guide can guide the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move along the conveying surface between the second guide and the first guide; or, the second guide and the third guide can guide the turnover basket or the tooling tool to move along the conveying surface between the second guide and the third guide;

[0011] When the second guide member is at the second height, the first guide member and the third guide member can guide the turnover basket or the tooling tool to move along the conveying surface between the first guide member and the third guide member.

[0012] According to the utility model, the side walls of the first guide member, the second guide member and the third guide member are all provided with outwardly inclined guide slopes;

[0013] The first guide member and the third guide member are both provided with an anti-dumping plate extending upward.

[0014] According to the utility model, it also includes a lifting drive assembly;

[0015] The lifting drive assembly includes a driving member and a sliding base plate;

[0016] The driving end of the driving member is drivingly connected to the sliding base plate, the sliding base plate is arranged parallel to and fixedly connected to the second guide member, and the driving member is used to drive the sliding base plate to drive the second guide member to move up and down.

[0017] According to the utility model, the driving end of the driving member is fixedly connected to the axially horizontal gear to drive the gear to rotate;

[0018] A vertically oriented rack is fixedly connected to the sliding base plate, and the rack and the gear are meshed for transmission.

[0019] According to the utility model, the lifting drive assembly further comprises a mounting base plate, the main body of the driving member is fixed on the mounting base plate, and the mounting base plate and the sliding base plate are arranged parallel and opposite to each other;

[0020] The first photoelectric switch and the second photoelectric switch are arranged at intervals in the upper and lower parts of the mounting base, and the sensing sheet is arranged on the sliding base; or the sensing sheet is arranged on the mounting base, and the first photoelectric switch and the second photoelectric switch are arranged at intervals in the upper and lower parts of the sliding base;

[0021] When the sliding substrate drives the second guide member to move up to the first height, the sensing sheet corresponds to the first photoelectric switch, and the driving member stops driving;

[0022] When the sliding substrate drives the second guide member to move downward to a second height, the sensing sheet corresponds to the second photoelectric switch, and the driving member stops driving.

[0023] According to the utility model, the installation base plate and the sliding base plate are connected in relative sliding manner via a slide rail and slider structure;

[0024] A protrusion is provided on the slider, and a first limiting protrusion and a second limiting protrusion are provided on the upper and lower parts of the slide rail respectively; or, the first limiting protrusion and the second limiting protrusion are provided on the upper and lower parts of the slider respectively, and the protrusion is provided on the slide rail;

[0025] When the sliding base plate drives the second guide member to move up to the first height, the protrusion presses against the bottom of the first limiting protrusion;

[0026] When the sliding base plate drives the second guide member to move downward to the second height, the protrusion is pressed against the top of the second limiting protrusion.

[0027] In a second aspect, the utility model further provides a conveying platform, including an automatic width adjustment mechanism, and a conveying assembly, wherein the conveying surface of the conveying assembly can support and drive the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move;

[0028] The first guide, the second guide and the third guide are sequentially arranged on the conveying assembly along the width direction of the conveying assembly, and the first guide and the third guide are perpendicular to and protrude from the conveying surface;

[0029] When the second guide member is at a first height, the second guide member is higher than the conveying surface;

[0030] When the second guide member is at the second height, the second guide member is not higher than the conveying surface.

[0031] According to the utility model, the conveying assembly includes a supporting base and a plurality of conveying line bodies;

[0032] The first guide member, the second guide member and the third guide member are sequentially arranged on the support base along the width direction of the support base;

[0033] A plurality of conveying line bodies are arranged on the support base in parallel and spaced apart along the width direction of the support base, and are located between the first guide member and the second guide member and between the second guide member and the third guide member, and the conveying line bodies form the conveying surface of the conveying assembly.

[0034] According to the utility model, the conveying assembly further includes a driving mechanism;

[0035] The conveyor line body is a sprocket chain structure; the main body of the driving mechanism is fixed on the supporting base, the driving end of the driving mechanism is drivingly connected to an active sprocket in the conveyor line body, and the active sprockets between two adjacent conveyor line bodies are fixedly connected to a synchronous shaft.

[0036] According to the utility model, limit sensors are arranged on both ends of the support base corresponding to the conveying direction of the conveying line body;

[0037] The support base is also provided with a position sensor located between the two limit sensors;

[0038] The support base is also provided with two blocking components higher than the conveying surface, and the two blocking components correspond to the two ends of the conveying line body in the conveying direction respectively;

[0039] The blocking assembly includes a blocking rod and a blocking rod driving member;

[0040] The driving end of the blocking rod driving member is fixedly connected to the blocking rod, and the blocking rod driving member is used to drive the blocking rod to rotate so as to switch between a horizontal orientation state and a vertical orientation state.

[0041] (III) Beneficial effects

[0042] The beneficial effects of the utility model are as follows: the utility model provides an automatic width adjustment mechanism and a conveying platform. Among them, the first guide member, the second guide member and the third guide member of the automatic width adjustment mechanism are sequentially arranged parallel to the conveying direction of the conveying surface, and the second guide member can be lifted and moved to switch between the first height and the second height:

[0043] When the second guide is at the first height, the second guide is higher than the conveying surface of the conveying assembly, and the second guide and the first guide can guide the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move along the conveying surface between the second guide and the first guide; or, the second guide and the third guide can guide the turnover basket or the tooling tool to move along the conveying surface between the second guide and the third guide.

[0044] When the second guide member is at the second height, the second guide member is not higher than the conveying surface of the conveying assembly, and the first guide member and the third guide member can guide the turnover basket or the tooling to move along the conveying surface between the first guide member and the third guide member.

[0045] When the SMT loading and unloading robot needs to transfer turnover baskets or tooling tools of different widths during line change or product switching of the production line, the second guide can be adjusted by lifting and lowering to conveniently switch the guide width of the guide used to guide the movement of the turnover basket or tooling tool to match the turnover baskets or tooling tools of different widths, and to ensure that the guide width is consistent each time. At the same time, the first guide, the second guide and the third guide are arranged in parallel to the conveying direction in sequence, and the adjustment method of lifting and lowering the second guide reduces the volume of the mechanism and does not occupy the width direction of the conveying platform perpendicular to the conveying direction on the horizontal plane, reducing the manufacturing difficulty of the conveying platform.

[0046] At the same time, the automatic width-adjusting mechanism and the conveying assembly can operate independently of each other without affecting each other, which also avoids the interference that is likely to occur when the automatic width-adjusting mechanism and the conveying assembly are arranged vertically, effectively reducing the manufacturing difficulty of the conveying platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a three-dimensional schematic diagram of the conveying platform of the utility model;

[0048] Figure 2 for Figure 1 A three-dimensional schematic diagram of a lifting drive assembly in FIG.

[0049] Figure 3 for Figure 2 Schematic diagram from another perspective;

[0050] Figure 4 It is a three-dimensional schematic diagram of the conveying platform in the SMT loading and unloading robot of the present invention moving downward relative to the transport chassis;

[0051] Figure 5 It is a three-dimensional schematic diagram of the conveying platform in the SMT loading and unloading robot of the present invention moving upward relative to the moving chassis.

[0052] [Description of Reference Numerals]

[0053] 1: automatic width adjustment mechanism; 11: first guide member; 12: second guide member; 13: third guide member; 14: lifting drive assembly; 141: drive member; 142: sliding base plate; 143: gear; 144: rack; 145: mounting base plate; 1461: first photoelectric switch; 1462: second photoelectric switch; 1463: induction sheet; 1471: slider; 1472: slide rail; 15: anti-dumping plate;

[0054] 2: conveying assembly; 21: supporting base; 22: conveying line body; 221: driving sprocket; 222: synchronous shaft; 23: fixing frame; 24: limit sensor; 25: blocking assembly; 251: blocking rod; 252: blocking rod driving member; 26: position sensor; 27: driving mechanism; 28: cover;

[0055] 3: Sports chassis;

[0056] 4: Lifting mechanism;

[0057] 5: Turnover basket. DETAILED DESCRIPTION

[0058] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 5 The orientation is used as a reference.

[0059] Example 1

[0060] like Figure 1-5 The automatic width adjustment mechanism 1 provided in the embodiment of the utility model comprises a first guide member 11 , a second guide member 12 and a third guide member 13 .

[0061] The first guide member 11, the second guide member 12 and the third guide member 13 are sequentially arranged parallel to the conveying direction of the conveying surface and spaced apart from each other. The second guide member 12 can be raised and lowered between a first height and a second height, and the first height is higher than the second height.

[0062] When the second guide member 12 is at the first height, the second guide member 12 and the first guide member 11 can guide the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move along the conveying surface between the second guide member 12 and the first guide member 11; or, the second guide member 12 and the third guide member 13 can guide the turnover basket or the tooling tool to move along the conveying surface between the second guide member 12 and the third guide member 13.

[0063] When the second guide member 12 is at the second height, the first guide member 11 and the third guide member 13 can guide the turnover basket or the tooling tool to move along the conveying surface between the first guide member 11 and the third guide member 13 .

[0064] Therefore, when the SMT loading and unloading robot needs to transfer turnover baskets or tooling tools of different widths during line change or product switching of the production line, the second guide 12 can be adjusted by lifting and lowering to conveniently switch the guide width of the guide used to guide the movement of the turnover basket or tooling tools to match the turnover baskets or tooling tools of different widths, and to ensure that the guide width is consistent each time. At the same time, the first guide 11, the second guide 12 and the third guide 13 are arranged in parallel to the conveying direction in sequence, and the adjustment method of lifting and lowering the second guide 12 reduces the volume of the mechanism and does not occupy the width direction of the conveying platform perpendicular to the conveying direction on the horizontal plane, thereby reducing the manufacturing difficulty of the conveying platform.

[0065] Specifically, the side walls of the first guide member 11, the second guide member 12 and the third guide member 13 are all provided with outwardly inclined guide slopes to facilitate loading or unloading of the turnover basket or tooling.

[0066] Specifically, the first guide member 11 and the third guide member 13 are both provided with an anti-dumping plate extending upward to prevent the turnover basket or the tooling from dumping during the transportation process.

[0067] Furthermore, the automatic width-adjusting mechanism 1 also includes a lifting drive component 14 .

[0068] The lifting drive assembly 14 includes a driving member 141 and a sliding base plate 142 .

[0069] The driving end of the driving member 141 is drivingly connected to the sliding base plate 142, and the sliding base plate 142 is arranged in parallel with the second guide member 12 and fixedly connected. The driving member 141 is used to drive the sliding base plate 142 to drive the second guide member 12 to move up and down, and the sliding base plate 142 can support the second guide member 12. Among them, the sliding base plate 142 is arranged in parallel with the second guide member 12, so that the sliding base plate 142 is parallel to the conveying direction of the conveying surface, does not occupy the width direction of the limited space of the conveying platform, and further reduces the manufacturing difficulty of the conveying platform.

[0070] Optionally, the driving end of the driving member 141 is fixedly connected to the axially horizontal gear 143 to drive the gear 143 to rotate. The sliding base plate 142 is fixedly connected to a vertically oriented rack 144, and the rack 144 and the gear 143 are meshed for transmission. When the driving member 141 drives the gear 143 to rotate, the rack 144 drives the sliding base plate 142 and the second guide member 12 to move synchronously up and down. The lifting drive assembly 14 set above has a simple structure, low cost, does not occupy the width direction of the conveying platform, and can effectively reduce the difficulty of processing.

[0071] Specifically, the driving member 141 is a motor.

[0072] Of course, other driving methods such as a lead screw nut or a synchronous belt assembly can also be used between the driving member 141 and the sliding base plate 142, as long as the driving member 141 can drive the sliding base plate 142 and the second guide member 12 to move synchronously up and down.

[0073] Specifically, the lifting drive assembly 14 also includes a mounting base plate 145, and the main body of the driving member 141 is fixed on the mounting base plate 145. The mounting base plate 145 and the sliding base plate 142 are parallel and relatively arranged, so that the mounting base plate 145 is also parallel to the conveying direction of the conveying surface, does not occupy the width direction of the limited space of the conveying platform, and further reduces the manufacturing difficulty of the conveying platform.

[0074] The first photoelectric switch 1461 and the second photoelectric switch 1462 are arranged on the mounting base 145 at intervals, and the sensing sheet 1463 is arranged on the sliding substrate 142; or the sensing sheet 1463 is arranged on the mounting base 145, and the first photoelectric switch 1461 and the second photoelectric switch 1462 are arranged on the sliding substrate 142 at intervals.

[0075] When the sliding substrate 142 drives the second guide member 12 to move up to the first height, the second guide member 12 is higher than the conveying surface of the conveying assembly 2, the sensor sheet 1463 corresponds to the first photoelectric switch 1461, and the driving member 141 stops driving to limit the upward position of the second guide member 12.

[0076] When the sliding substrate 142 drives the second guide member 12 to move down to the second height, the second guide member 12 is not higher than the conveying surface of the conveying assembly 2, the sensor sheet 1463 corresponds to the second photoelectric switch 1462, and the driving member 141 stops driving to limit the downward position of the second guide member 12.

[0077] It should be noted that the control process of the photoelectric switch and the sensor sheet 1463 adopts the existing control technology.

[0078] Preferably, the mounting base plate 145 and the sliding base plate 142 are connected in relative sliding manner via a slide rail and slider structure, so as to improve the accuracy and stability of the lifting and lowering movement of the second guide member 12 driven by the sliding base plate 142 .

[0079] More preferably, vertically oriented slide rails 1472 are provided at both ends of the mounting base 145 in the length direction, and sliders 1471 corresponding to the slide rails 1472 are provided at both ends of the sliding base 142 in the length direction; or, sliders 1471 are provided at both ends of the mounting base 145 in the length direction, and vertically oriented slide rails 1472 corresponding to the sliders 1471 are provided at both ends of the sliding base 142 in the length direction.

[0080] Therefore, the accuracy and stability of the second guide member 12 driven by the sliding base 142 when moving up and down are further improved.

[0081] Preferably, a protrusion is provided on the slider 1471 , and a first limiting protrusion and a second limiting protrusion are provided on the upper and lower parts of the slide rail 1472 , respectively; or, a first limiting protrusion and a second limiting protrusion are provided on the upper and lower parts of the slider 1471 , respectively, and a protrusion is provided on the slide rail 1472 .

[0082] When the sliding base plate 142 drives the second guide member 12 to move up to the first height, the protrusion presses against the bottom of the first limiting protrusion.

[0083] When the sliding base plate 142 drives the second guide member 12 to move downward to the second height, the protrusion presses against the top of the second limiting protrusion.

[0084] When the first photoelectric switch 1461 , the second photoelectric switch 1462 and the sensor sheet 1463 fail, the first limiting protrusion, the second limiting protrusion and the protrusion can mechanically limit the upper and lower positions of the second guide member 12 , thereby improving the lifting and lowering adjustment accuracy of the second guide member 12 .

[0085] Example 2

[0086] This embodiment further provides an SMT loading and unloading robot based on the embodiment 1, and the SMT loading and unloading robot includes a motion chassis 3, a lifting mechanism 4 and a conveying platform. The motion chassis 3 is used to drive the SMT loading and unloading robot as a whole to flow between various stations. The lifting mechanism 4 is arranged on the motion chassis 3, and the lifting mechanism 4 drives and connects to the conveying platform, and is used to drive the conveying platform to move up relative to the motion chassis 3 to the bearing platform on the corresponding station or move down to abut against the motion chassis 3. Figure 4 and 5 Two states are shown respectively, in which the conveying platform drives the turnover basket 5 to move downward relative to the moving chassis 3 to abut against the moving chassis 3 and moves upward relative to the moving chassis 3. The conveying platform includes an automatic width adjustment mechanism 1 and a conveying assembly 2. The conveying assembly 2 is provided with a conveying surface that can support and drive the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move so as to load or unload the material from the carrying platform on the work station. The automatic width adjustment mechanism 1 is used to switch the guide width to guide the turnover baskets or tooling tools of different widths to move along the conveying surface between the guide widths.

[0087] Specifically, the first guide member 11, the second guide member 12 and the third guide member 13 are sequentially arranged on the conveying assembly 2 along the width direction of the conveying assembly 2, and the first guide member 11 and the third guide member 13 are perpendicular to and protrude from the conveying surface.

[0088] When the second guide member 12 is at the first height, the second guide member 12 is higher than the conveying surface, and the second guide member 12 and the first guide member 11 or the second guide member 12 and the third guide member 13 can guide the turnover basket or the tooling to move along the conveying surface.

[0089] When the second guide member 12 is at the second height, the second guide member 12 is not higher than the conveying surface of the conveying assembly 2, and the first guide member 11 and the third guide member 13 can guide the turnover basket or the tooling to move along the conveying surface.

[0090] Therefore, the first guide member 11, the second guide member 12 and the third guide member 13 in the automatic width-adjusting mechanism 1 and the sliding base plate 142 and the mounting base plate 145 in the lifting drive assembly 14 that drives the second guide member 12 are all arranged parallel to the conveying direction of the conveying assembly 2, avoiding occupation of the width direction of the limited space of the conveying platform, and the automatic width-adjusting mechanism 1 and the conveying assembly 2 can operate independently of each other without affecting each other, and also avoiding the interference that is easy to occur when the automatic width-adjusting mechanism 1 and the conveying assembly 2 are arranged vertically, which effectively reduces the manufacturing difficulty of the conveying platform.

[0091] Preferably, when the second guide member 12 is at the second height, the second guide member 12 is lower than the conveying surface of the conveying assembly 2 so as not to affect the conveying of the turnover basket or the tooling by the conveying surface.

[0092] Furthermore, the conveying assembly 2 includes a supporting base 21 and a plurality of conveying line bodies 22 .

[0093] The first guide member 11, the second guide member 12 and the third guide member 13 are sequentially arranged on the support base 21 along the width direction of the support base 21. Specifically, the first guide member 11 and the third guide seat of the automatic width adjustment mechanism 1 are fixed to the support base 21 through the fixing frame 23. The mounting base 145 is fixed to the support base 21.

[0094] A plurality of conveyor lines 22 are arranged on the support base 21 at intervals along the width direction of the support base 21 and are located between the first guide 11 and the second guide 12 and between the second guide 12 and the third guide 13. The conveyor lines 22 form a conveying surface of the conveying assembly 2.

[0095] Specifically, the conveying assembly 2 also includes a driving mechanism 27. The conveying line body 22 is a sprocket chain structure. The main body of the driving mechanism 27 is fixed on the supporting base 21, and the driving end of the driving mechanism 27 drives and connects a driving sprocket 221 in a conveying line body 22, and the driving sprocket 221 between two adjacent conveying line bodies 22 is fixedly connected to the synchronous shaft 222. Only one driving mechanism 27 is set, and the driving mechanism 27 drives the corresponding driving sprocket 221 to rotate, and the synchronous shaft 222 drives the driving sprockets 221 of multiple conveying line bodies 22 to rotate synchronously, and then the driving sprocket 221 drives the driven sprocket to rotate through the chain, so that multiple conveying line bodies 22 are transported synchronously, and the conveying surface of the conveying assembly 2 is formed by the chain. Avoid setting multiple driving mechanisms 27 to occupy the limited space of the conveying platform.

[0096] More specifically, the driving mechanism 27 is a motor. The driving end of the driving mechanism 27 is fixedly connected to a driving gear, which is meshed with a driven gear fixed on a synchronous shaft 222 to drive a driving sprocket 221 in a conveyor line body 22 .

[0097] Optionally, the number of conveyor line bodies 22 is three. Two of the conveyor line bodies 22 are located between the first guide 11 and the second guide 12, and the other conveyor line body 22 is located between the second guide 12 and the third guide 13. When the second guide 12 is at the first height, the second guide 12 is higher than the conveying surface, and the second guide 12 and the first guide 11 can guide the turnover basket or the tool to move along the conveying surface. Of course, two of the conveyor line bodies 22 may also be located between the second guide 12 and the third guide 13, and the other conveyor line body 22 is located between the first guide 11 and the second guide 12. When the second guide 12 is at the first height, the turnover basket or the tool is guided by the second guide 12 and the third guide 13 to move along the conveying surface.

[0098] Optionally, there are four conveyor line bodies 22. Two of the conveyor line bodies 22 are located at the first guide 11 and the second guide 12, and the other two conveyor line bodies 22 are located between the second guide 12 and the third guide 13. When the second guide 12 is at the first height, the first guide 11 and the second guide 12 or the second guide 12 and the third guide 13 guide the turnover basket or the tooling to move along the conveying surface.

[0099] Preferably, a synchronization shaft 222 is also fixedly connected to the driven sprocket between two adjacent conveyor line bodies 22 to improve the synchronization and connection stability between the multiple conveyor line bodies 22.

[0100] More specifically, the sprocket of the conveyor line body 22 is preferably rotatably connected to a fixing frame 23 fixed on the support base 21 through a bearing, and is supported by the fixing frame 23.

[0101] Preferably, a cover 28 is provided between two adjacent conveyor line bodies 22, and the cover 28 is used to cover and protect the drive mechanism 27 and the synchronous shaft 222 of the conveyor assembly 2, as well as the drive member 141 and the mounting base plate 145 in the lifting drive assembly 14. At the same time, the cover 28 is not higher than the conveying surface, and does not affect the movement of the turnover basket or the tooling.

[0102] Preferably, limit sensors 24 are provided on the support base 21 at both ends corresponding to the conveying direction of the conveying line body 22. When the conveying line body 22 guides the turnover basket or tooling to move and load materials, the limit sensors 24 are used to monitor that both ends of the length of the turnover basket or tooling do not exceed the conveying line body 22, so as to avoid the turnover basket or tooling from falling during transportation.

[0103] Specifically, the limit sensor 24 is arranged on a fixing frame 23 fixed on the supporting base 21. More specifically, the limit sensor 24 is an infrared sensor, which can emit infrared light through a hole on the cover 28. When the turnover basket or the tooling triggers the infrared light, the conveying line 22 stops conveying.

[0104] More preferably, a position sensor 26 located between the two limit sensors 24 is further provided on the support base 21. The position sensor 26 is used to monitor the position of the turnover basket or tooling on the conveyor line body 22 during the loading process.

[0105] Specifically, the position sensor 26 is disposed on a fixing frame 23 fixed on the supporting base 21. More specifically, the position sensor 26 is an infrared sensor that can emit infrared light through a hole on the cover 28. When the turnover basket or the tooling tool triggers the infrared light, it is determined that the turnover basket or the tooling tool moves to a position on the conveyor line 22 corresponding to the position sensor 26.

[0106] Preferably, two blocking components 25 are also provided on the support base 21, which are higher than the conveying surface. The two blocking components 25 correspond to the two ends of the conveying line body 22 in the conveying direction. The blocking components 25 are used to mechanically limit the two ends of the turnover basket or tooling on the conveying line body 22 to be within the range of the conveying line body 22, so as to prevent the turnover basket or tooling from falling during the transfer process. Therefore, the blocking components 25 and the limit sensor 24 form a double protection for preventing the turnover basket or tooling from being over-positioned during loading.

[0107] Specifically, the blocking assembly 25 includes a blocking rod 251 and a blocking rod driving member 252, wherein the main body of the blocking rod driving member 252 is fixed on the support base 21, and the driving end of the blocking rod driving member 252 is fixedly connected to the blocking rod 251, and the blocking rod driving member 252 is used to drive the blocking rod 251 to rotate to switch between the horizontal orientation state and the vertical orientation state. The blocking rod driving member 252 is a motor.

[0108] When the blocking rod 251 monitors whether the two ends of the length of the turnover basket or the tooling tool exceed the conveyor line body 22, the blocking rod 251 is in a vertical orientation state.

[0109] When the blocking rod 251 does not need to monitor whether the two ends of the length of the turnover basket or the tooling tool exceed the conveyor line body 22, the blocking rod 251 is in a horizontal orientation state and does not affect the loading and unloading of the turnover basket or the tooling tool.

[0110] Preferably, the number of conveying platforms of the present application can be multiple, and the multiple conveying platforms are arranged in parallel, and the automatic width adjustment mechanisms 1 of the multiple conveying platforms cooperate to achieve multi-width and multi-level adjustment.

[0111] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0112] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An automatic width adjustment mechanism, characterized in that: It comprises a first guide member (11), a second guide member (12) and a third guide member (13); The first guide member (11), the second guide member (12) and the third guide member (13) are sequentially arranged in parallel with the conveying direction of the conveying surface and spaced apart from each other; the second guide member (12) can be lifted and lowered between a first height and a second height, and the first height is higher than the second height; When the second guide member (12) is at the first height, the second guide member (12) and the first guide member (11) can guide the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move along the conveying surface between the second guide member (12) and the first guide member (11); or, the second guide member (12) and the third guide member (13) can guide the turnover basket or the tooling tool to move along the conveying surface between the second guide member (12) and the third guide member (13); When the second guide member (12) is at a second height, the first guide member (11) and the third guide member (13) are capable of guiding the turnover basket or the tooling to move along the conveying surface between the first guide member (11) and the third guide member (13).

2. The automatic width adjustment mechanism according to claim 1, characterized in that: The side walls of the first guide member (11), the second guide member (12) and the third guide member (13) are all provided with outwardly inclined guide slopes; The first guide member (11) and the third guide member (13) are both provided with an anti-dumping plate extending upward.

3. The automatic width adjustment mechanism according to claim 1, characterized in that: Also includes a lifting drive assembly (14); The lifting drive assembly (14) comprises a driving member (141) and a sliding base plate (142); The driving end of the driving member (141) is drivingly connected to the sliding base plate (142); the sliding base plate (142) is arranged in parallel with and fixedly connected to the second guide member (12); the driving member (141) is used to drive the sliding base plate (142) to drive the second guide member (12) to move up and down.

4. The automatic width adjustment mechanism according to claim 3, characterized in that: The driving end of the driving member (141) is fixedly connected to a gear (143) with an axially horizontal position to drive the gear (143) to rotate. A vertically oriented rack (144) is fixedly connected to the sliding base plate (142), and the rack (144) and the gear (143) are meshed for transmission.

5. The automatic width adjustment mechanism according to claim 4, characterized in that: The lifting drive assembly (14) further comprises a mounting base plate (145), a main body of the driving member (141) is fixed on the mounting base plate (145), and the mounting base plate (145) and the sliding base plate (142) are arranged parallel to and opposite to each other; The mounting base plate (145) is provided with a first photoelectric switch (1461) and a second photoelectric switch (1462) at intervals in the upper and lower parts, and the sliding base plate (142) is provided with a sensing sheet (1463); or, the sensing sheet (1463) is provided on the mounting base plate (145), and the sliding base plate (142) is provided with the first photoelectric switch (1461) and the second photoelectric switch (1462) at intervals in the upper and lower parts; When the sliding substrate (142) drives the second guide member (12) to move up to a first height, the sensing sheet (1463) corresponds to the first photoelectric switch (1461), and the driving member (141) stops driving; When the sliding substrate (142) drives the second guide member (12) to move downward to the second height, the sensing sheet (1463) corresponds to the second photoelectric switch (1462), and the driving member (141) stops driving.

6. The automatic width adjustment mechanism according to claim 5, characterized in that: The installation base plate (145) and the sliding base plate (142) are connected in relative sliding manner via a slide rail and slider structure; A protrusion is provided on the slider (1471), and a first limiting protrusion and a second limiting protrusion are provided on the upper and lower parts of the slide rail (1472) respectively; or, the first limiting protrusion and the second limiting protrusion are provided on the upper and lower parts of the slider (1471) respectively, and the protrusion is provided on the slide rail (1472); When the sliding base plate (142) drives the second guide member (12) to move upward to a first height, the protrusion presses against the bottom of the first limiting protrusion; When the sliding base plate (142) drives the second guide member (12) to move downward to a second height, the protrusion presses against the top of the second limiting protrusion.

7. A conveying platform, characterized in that: It comprises the automatic width adjustment mechanism (1) as claimed in any one of claims 1 to 6, and also comprises a conveying component (2), the conveying surface of the conveying component (2) being capable of supporting and driving the turnover basket carrying the PCB board or the tooling tool clamped with the PCB board to move; The first guide member (11), the second guide member (12) and the third guide member (13) are sequentially arranged on the conveying component (2) along the width direction of the conveying component (2), and the first guide member (11) and the third guide member (13) are perpendicular to and protrude from the conveying surface; When the second guide member (12) is at a first height, the second guide member (12) is higher than the conveying surface; When the second guide member (12) is at the second height, the second guide member (12) is not higher than the conveying surface.

8. The conveying platform according to claim 7, characterized in that: The conveying assembly (2) comprises a supporting base (21) and a plurality of conveying line bodies (22); The first guide member (11), the second guide member (12) and the third guide member (13) are sequentially arranged on the support base (21) along the width direction of the support base (21); A plurality of conveyor line bodies (22) are arranged on the support base (21) in parallel and at intervals along the width direction of the support base (21), and are located between the first guide member (11) and the second guide member (12) and between the second guide member (12) and the third guide member (13), and the conveyor line bodies (22) form a conveying surface of the conveying assembly (2).

9. The conveying platform according to claim 8, characterized in that: The conveying assembly (2) further comprises a driving mechanism (27); The conveyor line body (22) is a sprocket chain structure; the main body of the driving mechanism (27) is fixed on the supporting base (21); the driving end of the driving mechanism (27) is drivingly connected to a driving sprocket (221) in the conveyor line body (22); and the driving sprockets (221) between two adjacent conveyor line bodies (22) are fixedly connected to a synchronous shaft (222).

10. The conveying platform according to claim 8, characterized in that: Limit sensors (24) are provided on the support base (21) at both ends corresponding to the conveying direction of the conveying line body (22); The support base (21) is also provided with a position sensor (26) located between the two limit sensors (24); The support base (21) is also provided with two blocking components (25) higher than the conveying surface, and the two blocking components (25) respectively correspond to the two ends of the conveying line body (22) in the conveying direction; The blocking assembly (25) comprises a blocking rod (251) and a blocking rod driving member (252); The driving end of the blocking rod driving member (252) is fixedly connected to the blocking rod (251), and the blocking rod driving member (252) is used to drive the blocking rod (251) to rotate so as to switch between a horizontal orientation state and a vertical orientation state.

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