CN216297385U

CN216297385U - PCB self-cleaning mechanism

Info

Publication number: CN216297385U
Application number: CN202121714885.3U
Authority: CN
Inventors: 赵海瑞; 唐仙华
Original assignee: Suzhou Longcheng Electronic Equipment Co ltd
Current assignee: Suzhou Longcheng Electronic Equipment Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-04-15
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a PCB automatic cleaning mechanism, comprising: a frame; the cleaning roller module is arranged on one side of the PCB operation area and comprises a cylinder and a cleaning roller, wherein the cylinder and the cleaning roller can move along the Z-axis direction; the transplanting module is connected with the cleaning roller module and can drive the cleaning roller module to move along the Y-axis direction; the dust sticking module is arranged on the other side of the PCB operation area and comprises a discharging motor, a discharging wheel connected with the discharging motor in a transmission mode, a receiving motor and a receiving wheel connected with the receiving motor in a transmission mode, wherein the discharging wheel and the receiving wheel are connected through a dust sticking film, and the dust sticking film is in contact with the cleaning roller to remove dust. The utility model has at least the following advantages: this mechanism compact structure drives clean gyro wheel through the cylinder and moves to offset with PCB along Z axle direction, transplants the module and drives clean gyro wheel and make the dust on clean gyro wheel with PCB glue along the motion of Y axle direction, and the adhesion dust membrane changes the dirt to clean gyro wheel, and is clean effectual, has improved work efficiency greatly, has reduced human cost and manufacturing cost.

Description

PCB self-cleaning mechanism

Technical Field

The utility model relates to the technical field of cleaning machines, in particular to an automatic PCB cleaning mechanism.

Background

During the processing of the PCB, dust or dirt may fall on the surface of the PCB, and the dust or dirt on the surface of the PCB needs to be removed before the processing is completed. The traditional method is that the cleaning roller is manually used for cleaning the surface of the PCB, and then the dust sticking film is used for transferring dust to the cleaning roller so as to keep the cleaning roller clean for removing dust of the next PCB. But the manual operation process is complicated, the dust removal efficiency is low, and the labor cost is greatly increased; if the operation is lost, secondary pollution is generated to the PCB, so that the dust removal is more troublesome.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides an automatic PCB cleaning mechanism which is used for solving the problems of low manual dust removal efficiency and high cost.

The embodiment of the application discloses an automatic PCB cleaning mechanism which is compact in structure, a cleaning roller is driven by a cylinder to move along the Z-axis direction to be abutted against a PCB, a transplanting module drives the cleaning roller to move along the Y-axis direction to enable the cleaning roller to completely stick dust on the PCB, then a discharging motor and a receiving motor simultaneously drive a discharging wheel and a receiving wheel to move, and the discharging wheel and the receiving wheel can rotate forward and backward by being driven by double motors so as to recycle a dust sticking film and save consumables; the dust sticking film moves towards the direction close to the cleaning roller, so that dust on the cleaning roller is stuck off, the cleaning roller removes dust on the next PCB, the PCB is cleaned in a dust rotating mode, the cleaning effect is good, the working efficiency is greatly improved, and the labor cost and the production cost are reduced.

Wherein, a PCB self-cleaning mechanism includes:

the PCB operation area is arranged on the rack;

the cleaning roller module is arranged on one side of the PCB operation area and comprises an air cylinder capable of moving along the Z-axis direction and a cleaning roller in transmission connection with the air cylinder;

the transplanting module is arranged on one side of the cleaning roller module along the Y-axis direction and connected with the cleaning roller module, and the transplanting module can drive the cleaning roller module to move along the Y-axis direction;

the setting is in the viscidity dirt module of PCB operation district opposite side, the viscidity dirt module include the blowing motor, with the blowing wheel that blowing motor drive is connected, receive the material motor, with receive the material motor drive and connect and be located the receipts material wheel of blowing wheel below, the blowing wheel with receive and connect through the viscidity dirt membrane between the material wheel, the viscidity dirt membrane with move extremely the clean gyro wheel of PCB operation district opposite side contacts with right clean gyro wheel removes dust.

Furthermore, the PCB fixing device further comprises a first support fixed on the rack, and the first support is used for placing the PCB.

Furthermore, the PCB assembly line further comprises an assembly line arranged along the X-axis direction, and the assembly line is fixed on the rack through the first support so as to convey the PCB.

Further, clean gyro wheel module still include with the linear guide that the cylinder transmission is connected, linear guide with clean gyro wheel is connected in order to drive clean gyro wheel is along Z axle direction and is the elevating movement, and the cover is established the second support in the clean gyro wheel outside, the inboard at second support both ends be equipped with clean gyro wheel is connected and can move clean gyro wheel pivoted gear, the outside at second support both ends is equipped with and is used for fixing clean gyro wheel with the buckle of gear.

Furthermore, transplant the module and include the connecting plate that sets up along the X axle direction, the one end of connecting plate with clean gyro wheel module fixed connection, the bottom of the other end is equipped with the guide slot, the guide slot with along the first guide rail sliding connection of Y direction setting, in order to drive clean gyro wheel module moves along the Y axle direction.

Furthermore, the transplanting module further comprises a driving motor arranged on one side, away from the cleaning roller, of the connecting plate, and the driving motor is used for driving the connecting plate to move along the Y-axis direction.

Furthermore, the discharging motor and the receiving motor are connected with the discharging wheel and the receiving wheel in a rotating mode through driving wheels.

Furthermore, the dust sticking module is characterized by further comprising a third support fixed on the rack, wherein a first rotating shaft and a second rotating shaft are oppositely arranged at the upper end and the lower end of the third support along the X-axis direction respectively, the first rotating shaft is connected with the single-layer dust sticking film and is linked with the discharging wheel, and the second rotating shaft is connected with the single-layer dust sticking film and is linked with the material receiving wheel.

Furthermore, one end of the first rotating shaft is connected with an encoder, the encoder is used for feeding back the distance of one-time movement of the dust sticking film, and the distance of each-time movement of the dust sticking film is consistent with the circumference of the cleaning roller.

Furthermore, the one end of blowing wheel with the receipts material wheel all is equipped with hold-down mechanism, hold-down mechanism including inlay establish blowing wheel with receive in the material wheel from the driving wheel, with follow the fourth support that the driving wheel linked together, one side of fourth support is equipped with the handle along the Y axle direction, the opposite side of fourth support is equipped with the spring, the one end card that the fourth support closes on the spring is established in the second guide rail that sets up along the Z axle direction.

The utility model has the following beneficial effects:

1. the mechanism is compact in structure, the cleaning roller is driven by the air cylinder to move along the Z-axis direction to abut against a PCB (printed circuit board), the transplanting module drives the cleaning roller to move along the Y-axis direction to enable the cleaning roller to stick dust on the PCB, then the discharging motor and the receiving motor simultaneously drive the discharging wheel and the receiving wheel to move, the discharging wheel and the receiving wheel can rotate forward and backward by the double-motor drive of the discharging motor and the receiving motor, the dust sticking film can be repeatedly utilized according to the cleaning effect, and consumable materials are saved; the dust sticking film moves towards the direction close to the cleaning roller, so that dust on the cleaning roller is stuck off, the cleaning roller removes dust on the next PCB, the PCB is cleaned in a dust rotating mode, the cleaning effect is good, the working efficiency is greatly improved, and the labor cost and the production cost are reduced.

2. Through cylinder bottom transmission connection linear guide, linear guide can be right the cylinder is right when following Z axle motion the cylinder carries out the guide effect to guarantee clean gyro wheel's transplantation precision.

3. Through set up the buckle cleaning roller one side, make things convenient for the workman right cleaning roller quick replacement saves time.

4. Through the discharge wheel with one side of receipts material wheel sets up hold-down mechanism, hold-down mechanism is convenient for the workman conveniently to change the adhesive dust membrane fast.

In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an automatic PCB cleaning machine according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of a cleaning roller module of the automatic PCB cleaner according to the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a dust-sticking module of an automatic PCB cleaner according to an embodiment of the present invention.

Reference numerals of the above figures: 1. a frame; 2. cleaning the roller module; 21. a cylinder; 22. cleaning the roller; 23. a linear guide rail; 24. a first bracket; 25. a gear; 26. buckling; 3. transplanting the module; 31. a connecting plate; 32. a first guide rail; 33. a drive motor; 4. a dust sticking module; 41. a discharging motor; 42. a material receiving motor; 43. a discharge wheel; 44. a material receiving wheel; 45. a dust sticking film; 46. a third support; 47. a first rotating shaft; 48. an encoder; 49. a driving wheel; 5. a hold-down mechanism; 51. a driven wheel; 52. a fourth bracket; 53. a handle; 54. a spring; 55. a second guide rail; 6. a first support.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The application PCB self-cleaning mechanism, this mechanism compact structure drives clean gyro wheel through the cylinder and moves to offset with PCB along Z axle direction, transplants the module and drives clean gyro wheel makes along Y axle direction motion clean gyro wheel will dust on the PCB has glued, then blowing motor drives the blowing wheel simultaneously with receiving the material motor and receive the material wheel motion to make the viscid film towards the direction motion that closes on clean gyro wheel, thereby will dust on the clean gyro wheel glues, is convenient for clean gyro wheel removes dust to next PCB, changes clean PCB of dirt mode through the cleanness, and is clean effectual, has improved work efficiency greatly, has reduced human cost and manufacturing cost.

PCB self-cleaning mechanism of the embodiment of the application includes:

the PCB assembling machine comprises a machine frame 1, wherein a PCB operation area is arranged on the machine frame 1;

the cleaning roller module 2 is arranged on one side of the PCB operation area, and the cleaning roller module 2 comprises an air cylinder 21 capable of moving along the Z-axis direction and a cleaning roller 22 in transmission connection with the air cylinder 21;

the transplanting module 3 is arranged on one side of the cleaning roller module 2 along the Y-axis direction and connected with the cleaning roller module 2, and the transplanting module 3 can drive the cleaning roller module 2 to move along the Y-axis direction;

set up and be in the dust adhesion module 4 of PCB operation district opposite side, dust adhesion module 4 includes blowing motor 41, with blowing wheel 43 that blowing motor 41 transmission is connected, receive material motor 42, with receive material motor 42 transmission and connect and be located receive material wheel 44 of blowing wheel 43 below, blowing wheel 43 with receive and connect through dust adhesion membrane 45 between the material wheel 44, dust adhesion membrane 45 with move extremely the clean gyro wheel 22 of PCB operation district opposite side contacts with right clean gyro wheel 22 removes dust.

With the above structure, the worker starts the operation and the pipeline transports the PCB to the PCB operation area on the rack 1, with reference to fig. 1, 2, and 3. The air cylinder 21 is started, the air cylinder 21 drives the linear guide rail 23 in transmission connection with the air cylinder 21 to move downwards along the Z-axis direction, the cleaning roller 22 is further driven to move downwards until the linear guide rail abuts against the end face of the PCB, and in the process, the linear guide rail 23 can guarantee the moving precision of the cleaning roller 22. Start driving motor 33, driving motor 33 drives connecting plate 31 and slides along Y axle direction through the guide rail rather than sliding connection, further drive with clean gyro wheel module 2 that connecting plate 31 is connected is along Y axle direction to the opposite side motion in PCB operation district, extremely clean gyro wheel 22 moves extremely the opposite side in PCB operation district has glued completely dust on the PCB. Then, the discharging motor 41 and the receiving motor 42 are started, the discharging motor 41 and the receiving motor 42 move simultaneously, the discharging motor 41 drives the discharging wheel 43 to rotate, so as to release the dust-sticking film 45 wrapped on the discharging wheel 43, the dust-sticking film 45 is fed back by the encoder 48 by a constant distance, and the distance of each time the dust-sticking film 45 is taken is the perimeter of the cleaning roller 22. The viscidity of adhesive dust film 45 is greater than the viscidity of cleaning roller 22, can be to dust changes in the dust on the cleaning roller 22, blowing motor 41 drives the blowing wheel 43 is rotatory in order to retrieve used adhesive dust film 45, and adhesive dust film 45 can reuse according to the cleaning performance, has practiced thrift the consumptive material. The cleaning roller 22 which is stuck clean moves back to the initial position along the opposite direction of the Y-axis direction under the driving of the driving motor 33 so as to remove dust on the next PCB, thereby greatly improving the dust removal efficiency.

Specifically, in this embodiment, the automatic PCB cleaning mechanism includes: a frame 1. The frame 1 may be rectangular. And a PCB operation area is arranged on the frame 1. And a cleaning roller module 2 is arranged on one side of the PCB operation area. The cleaning roller module 2 includes a cylinder 21 movable in the Z-axis direction. The bottom of the air cylinder 21 is connected with a cleaning roller 22 in a transmission way. The cleaning roller 22 may have a cylindrical shape. The cleaning roller 22 has a length corresponding to that of the PCB. And a transplanting module 3 connected with one side of the cleaning roller module 2 is arranged along the Y-axis direction. The transplanting module 3 can drive the cleaning roller module 2 to move along the Y-axis direction, so that the cleaning roller 22 removes dust from the PCB. And a dust sticking module 4 is arranged on the other side of the PCB operation area. The dust sticking module 4 comprises a discharging motor 41. One end of the discharging motor 41 is in transmission connection with a discharging wheel 43. And the receiving motor 42 is arranged adjacent to the discharging motor 41. One end of the receiving motor 42 is connected with a receiving wheel 44 in a transmission manner. The take-up wheel 44 is located below the discharge wheel 43. The discharging wheel 43 is connected with the collecting wheel 44 through a dust adhering film 45. The viscosity of the dust-sticking film 45 is larger than that of the cleaning roller 22. The dust sticking film 45 contacts with the cleaning roller 22 moving to the other side of the PCB working area to rotate dust on the cleaning roller 22. This mechanism compact structure drives clean gyro wheel 22 through cylinder 21 and moves to offset with PCB along the Z axle direction, transplants the module 3 and drives clean gyro wheel 22 makes along the motion of Y axle direction clean gyro wheel 22 will dust on the PCB has glued, then blowing motor 41 drives blowing wheel 43 and receipts material wheel 44 motion with receiving material motor 42 simultaneously to make sticky dust film 45 towards the direction motion that closes on clean gyro wheel 22, thereby will dust on the clean gyro wheel 22 glues, is convenient for clean gyro wheel 22 removes dust to next PCB, changes clean PCB of dirt mode through the cleanness, and clean effectual has improved work efficiency greatly, has reduced human cost and manufacturing cost.

Specifically, in this embodiment, the automatic PCB cleaning mechanism further includes a first bracket 6 fixed on the rack 1. The first bracket 6 is used for placing the PCB so that the cleaning roller module 2 removes dust along with the PCB.

Specifically, in this embodiment, the automatic PCB cleaning mechanism further includes a production line (not shown) disposed along the X-axis direction. The assembly line is fixed on the rack 1 through the first support to convey the PCB.

Referring specifically to fig. 2, in this embodiment, the cleaning roller module 2 further includes a linear guide 23 in transmission connection with the cylinder 21. The linear guide 23 is provided along the Z-axis direction. The linear guide rail 23 is connected to the cleaning roller 22 to drive the cleaning roller 22 to move up and down along the Z-axis direction. The outer side of the cleaning roller 22 is sleeved with a second bracket 24. And gears 25 which are connected with the cleaning rollers 22 and can drive the cleaning rollers 22 to rotate are arranged on the inner sides of the two ends of the second bracket 24. The outer sides of the two ends of the second bracket 24 are provided with buckles 26 for fixing the cleaning roller 22 and the gear 25. When the cleaning roller 22 is not sticky enough to stick dust any more, the buckle 26 is opened, and a new cleaning roller 22 can be replaced. The buckle 26 facilitates the replacement of the cleaning roller 22 by workers, facilitates the operation of workers, saves the time for replacing the cleaning roller 22, and further improves the working efficiency.

Specifically, in this embodiment, the transplanting module 3 includes a connecting plate 31 disposed along the X-axis direction. The connecting plate 31 may be rectangular. One end of the connecting plate 31 is fixedly connected with the cleaning roller module 2. The bottom of the other end of the connecting plate 31 is provided with a guide groove (not shown). A first guide rail 32 is arranged on the machine frame 1 along the Y direction. The guide groove can be slidably connected with the first guide rail 32 to drive the cleaning roller module 2 to move along the Y-axis direction, so that the cleaning roller 22 removes dust from the PCB.

In an alternative embodiment, the transplanting module 3 further comprises a driving motor 33 disposed on a side of the connecting plate 31 away from the cleaning roller 22. The driving motor 33 is used for driving the connecting plate 31 to move along the Y-axis direction so as to further drive the cleaning roller 22 to move along the Y-axis direction to remove dust on the PCB, so that manual dust removal is abandoned, the time required by PCB dust removal is shortened, and the working efficiency is greatly improved.

Specifically, in this embodiment, the discharging motor 41 and the receiving motor 42 are rotatably connected to the discharging wheel 43 and the receiving wheel 44 through a driving wheel 49. The discharging motor 41 transmits power to the discharging wheel 43 through the driving wheel 49 to further drive the driven wheel 51 on the other side of the discharging wheel 43 to rotate along with the discharging wheel, so that the dust sticking film 45 moves. The material receiving motor 42 transmits power to the material receiving wheel 44 through the driving wheel 49 to further drive the driven wheel 51 at the other side of the material receiving wheel 44 to rotate along with the material receiving wheel, so that the dust-sticking film 45 after dust removal is recovered. Through blowing motor 41 and receipts material motor 42 combination together, two motor drive for blowing wheel 43 with receive material wheel 44 and can just reverse, according to clean effect dust binding film 45 can recycle, practices thrift the consumptive material.

Referring specifically to fig. 3, in this embodiment, the dust sticking module 4 further includes a third bracket 46 fixed on the rack 1. The upper end and the lower end of the third bracket 46 are respectively provided with a first rotating shaft 47 and a second rotating shaft (not marked in the figure) oppositely along the X-axis direction. The first and

second shafts

47 and 47 may be cylindrical. The first rotating shaft 47 is connected with the single-layer dust-sticking film 45 and is linked with the discharging wheel 43. The first rotating shaft 47 is used for tensioning the dust sticking film 45 so as to rotate the dust on the PCB. The second rotating shaft is connected with a single-layer dust-sticking film 45 and is linked with the material receiving wheel 44. The second rotating shaft is used for enabling the dust sticking film 45 in the working area to be in a tensioned state, so that the dust rotating effect of the dust sticking film 45 is better.

In an alternative embodiment, an encoder 48 is attached to one end of the first shaft 47. The encoder 48 is used for feeding back the distance of one movement of the dust sticking film 45. The distance of each movement of the dust-sticking film 45 coincides with the circumference of the cleaning roller 22. The encoder 48 realizes closed-loop control on the dust sticking film 45, ensures that the distance of each movement of the dust sticking film 45 is consistent, and does not waste the dust sticking film 45.

Specifically, in this embodiment, the pressing mechanism 5 is disposed at one end of each of the discharging wheel 43 and the material receiving wheel 44. The pressing mechanism 5 comprises a driven wheel 51 embedded in the discharging wheel 43 and the receiving wheel 44. A fourth bracket 52 is connected to one side of the driven wheel 51. A handle 53 is provided on one side of the fourth bracket 52 along the Y-axis direction. The other side of the fourth bracket 52 is provided with a spring 54. One end of the fourth bracket 52 adjacent to the spring 54 is engaged in a second guide rail 55 provided in the Z-axis direction. When the force of the spring 54 is larger than the force of the handle 53, the hold-down mechanism 5 is elastically pulled so that the fourth bracket 52 is caught in the second rail 55. When the dust sticking film 45 is used up and needs to be replaced, the force of the handle 53 is ensured to be larger than the force of the spring 54 so as to separate the fourth bracket 52 from the second guide rail 55, and the driven gear 25 is separated from the discharge wheel 43 and the receiving wheel 44 so as to replace the dust sticking film 45. This hold-down mechanism 5 simple structure, convenient operation, the workman of being convenient for changes dust binding membrane 45 fast.

The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An automatic PCB cleaning mechanism, comprising:

the PCB operation area is arranged on the rack;

the setting is in the viscidity dirt module of PCB operation district opposite side, the viscidity dirt module includes blowing motor and receipts material motor, blowing motor drive is connected with the blowing wheel, receive material motor drive and be connected with and be located the receipts material wheel of blowing wheel below, the blowing wheel with receive and connect through the viscidity dirt membrane between the material wheel, the viscidity dirt membrane with move extremely the clean gyro wheel of PCB operation district opposite side contacts with right clean gyro wheel removes dust.

2. The automatic PCB cleaning mechanism of claim 1, further comprising a first bracket fixed to the frame, the first bracket being configured to receive the PCB.

3. The automatic PCB cleaning mechanism according to claim 2, further comprising a production line arranged along the X-axis direction, wherein the production line is fixed on the rack through the first bracket to convey the PCB.

4. The automatic PCB cleaning mechanism according to claim 1, wherein the cleaning roller module further comprises a linear guide rail in transmission connection with the cylinder, the linear guide rail is connected with the cleaning roller to drive the cleaning roller to move up and down along the Z-axis direction, a second support arranged on the outer side of the cleaning roller is sleeved with the linear guide rail, gears which are connected with the cleaning roller and can drive the cleaning roller to rotate are arranged on the inner sides of the two ends of the second support, and buckles used for fixing the cleaning roller and the gears are arranged on the outer sides of the two ends of the second support.

5. The automatic PCB cleaning mechanism according to claim 1, wherein the transplanting module comprises a connecting plate arranged along an X-axis direction, one end of the connecting plate is fixedly connected with the cleaning roller module, and the bottom of the other end of the connecting plate is provided with a guide groove which is slidably connected with a first guide rail arranged along a Y-axis direction so as to drive the cleaning roller module to move along the Y-axis direction.

6. The automatic PCB cleaning mechanism of claim 5, wherein the transplanting module further comprises a driving motor disposed on a side of the connecting plate away from the cleaning roller, the driving motor being configured to drive the connecting plate to move along a Y-axis direction.

7. The automatic PCB cleaning mechanism of claim 1, wherein the discharging motor and the receiving motor are rotatably connected with the discharging wheel and the receiving wheel through driving wheels.

8. The automatic PCB cleaning mechanism according to claim 1, wherein the dust-sticking module further comprises a third bracket fixed on the rack, the upper end and the lower end of the third bracket are respectively provided with a first rotating shaft and a second rotating shaft along the X-axis direction, the first rotating shaft is connected with the single-layer dust-sticking film and is linked with the discharging wheel, and the second rotating shaft is connected with the single-layer dust-sticking film and is linked with the receiving wheel.

9. The automatic PCB cleaning mechanism according to claim 8, wherein an encoder is connected to one end of the first rotating shaft, the encoder is used for feeding back the distance of one movement of the dust sticking film, and the distance of each movement of the dust sticking film is consistent with the circumference of the cleaning roller.

10. The automatic PCB cleaning mechanism according to claim 1, wherein a pressing mechanism is arranged at each of the ends of the discharging wheel and the receiving wheel, which are far away from the driving wheel, the pressing mechanism comprises a driven wheel embedded in the discharging wheel and the receiving wheel, and a fourth support connected with the driven wheel, a handle is arranged at one side of the fourth support along the Y-axis direction, a spring is arranged at the other side of the fourth support, and one end of the fourth support, which is close to the spring, is clamped in a second guide rail arranged along the Z-axis direction.