Trundle assembling equipment

Abstract

The utility model discloses trundle assembling equipment which comprises a transferring mechanism, a first conveying mechanism, a second conveying mechanism, a third conveying mechanism, a fourth conveying mechanism and a fourth conveying mechanism. The brake pad feeding mechanism comprises a second feeding assembly and a first manipulator; the spring feeding mechanism comprises a third feeding assembly and a second manipulator; the first assembling mechanism is matched with the first mechanical arm and the second mechanical arm, and the brake pad and the spring are assembled and then installed on the trundle frame. The second assembling mechanism comprises a handle assembling module and a pin shaft assembling module; the first assembling mechanism and the second assembling mechanism are sequentially arranged in the moving direction of the transferring mechanism. The first feeding assembly conveys a trundle frame to the transferring assembly, the spring feeding mechanism, the brake pad feeding mechanism and the first assembling mechanism are matched to install a spring and a brake pad on the trundle frame, then the second assembling mechanism installs a handle on the trundle frame through a pin shaft, automatic trundle assembling is achieved, efficiency is improved, and labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automation, in particular to a caster assembly device. Background Art

[0002] Common casters usually have a brake function. During assembly, the brake handle, spring and brake pad need to be assembled to the caster frame. Currently, the brake handle, spring and brake pad are mainly assembled to the caster frame manually, but manual assembly is inefficient and labor-intensive. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a caster assembly device, which can improve assembly efficiency and reduce labor intensity.

[0004] The caster assembly device according to the first embodiment of the utility model includes: a transfer mechanism, including a first loading component and a transfer component, the first loading component is used to send the caster frame one by one to the transfer component; a brake pad loading mechanism, including a second loading component and a first manipulator, the second loading component is used to send out the brake pads one by one, and the first manipulator is used to grab the brake pads; a spring loading mechanism, including a third loading component and a second manipulator, the third loading component is used to send out the springs one by one, and the second manipulator is used to grab the springs; a first assembling mechanism, cooperating with the first manipulator and the second manipulator, assembling the brake pads and the springs and installing them on the caster frame; a second assembling mechanism, including a handle assembly module and a pin assembly module, the handle assembly module sends out the handles one by one and assembles the handles to the caster frame, and the pin assembly module sends out the pins one by one and passes the pins through the caster frame and the handle at the same time; wherein, the first assembly mechanism and the second assembly mechanism are arranged in sequence along the movement direction of the transfer mechanism.

[0005] The caster assembly equipment according to the embodiment of the utility model has at least the following beneficial effects: the first loading component sends the caster frame to the transfer component, the transfer component drives the caster frame to the first assembly mechanism, the second loading component sends out the brake pad, the third loading component sends out the spring, the first manipulator, the second manipulator and the first assembly mechanism cooperate to install the spring and the brake pad on the caster frame, and then the second assembly mechanism installs the handle on the caster frame through the pin shaft, thereby realizing automatic assembly of the caster, improving efficiency and reducing labor intensity.

[0006] According to some embodiments of the utility model, the first loading assembly includes a first guide rail, a first driving member and a first movable block, the first guide rail is arranged along a first direction, a stop block is arranged at the discharge end of the first guide rail, the distance between the stop block and the first guide rail matches the caster frame, the first driving member drives the first movable block to move along a second direction to send the caster frame into the transfer assembly, and the first direction and the second direction are perpendicular to each other.

[0007] According to some embodiments of the utility model, the transfer assembly includes a rotating disk and a plurality of positioning clamps, the rotating disk is vertically arranged, the plurality of positioning clamps are arranged at intervals along the circumference of the rotating disk, the positioning clamps are provided with a snap-in groove, and the snap-in groove matches the caster frame.

[0008] According to some embodiments of the utility model, the second loading assembly includes a second guide rail, a second driving member and a second movable block, the second guide rail is arranged along the first direction, the second movable block has a first positioning groove, the first positioning groove is docked with the second guide rail, the first positioning groove matches the brake pad, and the second driving member drives the second movable block to move along the second direction.

[0009] According to some embodiments of the utility model, the third loading assembly includes a third guide rail and a first clamp, the first clamp is arranged at the discharge end of the third guide rail, and the second manipulator is arranged at the lower end of the first clamp.

[0010] According to some embodiments of the utility model, the second manipulator includes a third driving member and a second clamp, the second clamp is arranged at the movable end of the third driving member, and the second clamp includes two first clamping blocks, and the two first clamping blocks cooperate to clamp the spring.

[0011] According to some embodiments of the utility model, the first assembly mechanism includes a fourth driving member, a supporting component and a third clamp, the third clamp is arranged above the supporting component, the third clamp clamps the brake pad, the supporting component can enable the spring to abut against the brake pad from bottom to top, and the fourth driving member drives the third clamp and the supporting component to be inserted into the caster frame.

[0012] According to some embodiments of the present utility model, the supporting component includes a supporting block and a fifth driving member, the fifth driving member drives the supporting block to move in a vertical direction, and the fifth driving member is arranged on the movable end of the fourth driving member.

[0013] According to some embodiments of the utility model, the handle assembly module includes a fourth guide rail, a sixth driving member, a third movable block and a third manipulator arranged along the first direction, the third movable block is arranged at the discharge end of the fourth guide rail, the third movable block is provided with a second positioning groove, the second positioning groove is docked with the fourth guide rail, the second positioning groove matches the handle, the sixth driving member drives the third movable block to move along the second direction, and the third manipulator installs the handle from the third movable block to the caster frame.

[0014] According to some embodiments of the utility model, the pin shaft assembly module includes a fifth guide rail, a guide block, a seventh drive member and an eighth drive member, the discharge end of the fifth guide rail is arranged in the horizontal direction, the guide block is provided with a first pipe and a second pipe, the first pipe is docked with the fifth guide rail, the first pipe and the second pipe are parallel to and connected with each other, the second pipe is docked with the transfer assembly, the seventh drive member drives the pin shaft to be transported from the first pipe to the second pipe, and the eighth drive member drives the pin shaft to be plugged from the second pipe to the caster frame.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of a caster assembly device according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a transfer mechanism in a caster assembly device according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a brake pad feeding mechanism, a spring feeding mechanism and a first assembly mechanism in the caster assembly device of an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a handle assembly module in a caster assembly device according to an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of a pin assembly module in a caster assembly device according to an embodiment of the utility model;

[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of the middle A;

[0023] Figure 7 It is a schematic diagram of a discharging mechanism in a caster assembly device according to an embodiment of the utility model;

[0024] Figure 8 This is an assembly diagram of a product produced by the caster assembly equipment according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] The transfer mechanism 100, the first guide rail 111, the first driving member 112, the first movable member 113, the rotating disk 121, and the positioning fixture 122;

[0027] Brake pad feeding mechanism 200, second guide rail 211, second movable block 212, second driving member 213, first manipulator 220;

[0028] Spring feeding mechanism 300, third guide rail 311, first clamp 312, second clamp 321;

[0029] A first assembly mechanism 400, a second clamping block 411, a support block 421, a fifth driving member 422, and a fourth driving member 430;

[0030] A handle assembly module 510, a fourth guide rail 511, a third movable block 512, a third manipulator 513, a pin assembly module 520, a guide block 521, a first pipe 522, a second pipe 523, a seventh driving member 524, an eighth driving member 525, and a push rod 526;

[0031] A ninth driving member 611 and a fourth movable block 612;

[0032] Caster frame 700, brake pad 701, spring 702, handle 703, pin 704. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figure 1 and Figure 8 The caster assembly device of the first embodiment of the utility model includes: a transfer mechanism 100, including a first loading component and a transfer component, the first loading component is used to send the caster frame 700 to the transfer component one by one; a brake pad loading mechanism 200, including a second loading component and a first manipulator 220, the second loading component is used to send out the brake pads 701 one by one, and the first manipulator 220 is used to grab the brake pads 701; a spring loading mechanism 300, including a third loading component and a second manipulator, the third loading component is used to send out the springs 702 one by one, and the second manipulator is used to grab the springs 702; a first assembly mechanism 400, and a first machine The manipulator 220 cooperates with the second manipulator to assemble the brake pad 701 and the spring 702 and then install them on the caster frame 700; the second assembly mechanism includes a handle assembly module 510 and a pin assembly module 520, the handle assembly module 510 sends out the handles 703 one by one and assembles the handles 703 on the caster frame 700, the pin assembly module 520 sends out the pins 704 one by one and passes the pins 704 through the caster frame 700 and the handle 703 at the same time; the discharging mechanism is used to send the assembled caster frame 700 out from the transfer assembly; wherein, the first assembly mechanism 400 and the second assembly mechanism are arranged in sequence along the movement direction of the transfer mechanism 100.

[0038] The first loading assembly sends the caster frame 700 to the transfer assembly, the transfer assembly drives the caster frame 700 to the first assembly mechanism 400, the second loading assembly sends out the brake pad 701, the first manipulator 220 grabs the brake pad 701 from the second loading assembly and moves it to the first assembly mechanism 400, the third loading assembly sends out the spring 702, the second manipulator grabs the spring 702 from the third loading assembly and moves it to the first assembly mechanism 400, then the first manipulator 220, the second manipulator and the first assembly mechanism 400 cooperate to install the spring 702 and the brake pad 701 on the caster frame 700, and then the second assembly mechanism installs the handle 703 on the caster frame 700 through the pin 704, finally, the assembled caster frame 700 is sent out through the discharging mechanism, realizing the automatic assembly of casters, improving efficiency and reducing labor intensity.

[0039] It is understandable that, referring to Figure 2 The first loading assembly includes a first guide rail 111, a first driving member 112 and a first movable block. The first guide rail 111 is arranged along a first direction. A stopper is arranged at the discharge end of the first guide rail 111. The distance between the stopper and the first guide rail 111 matches the caster frame 700. The first driving member 112 drives the first movable block to move along a second direction to send the caster frame 700 into the transfer assembly. The first direction and the second direction are perpendicular to each other. The caster frame 700 is sent to the first guide rail 111 one by one through the vibration plate, the first guide rail 111 matches the caster frame 700, the caster frame 700 is sent out along the first guide rail 111 and abuts against the block, so that the caster frame 700 stops between the block and the first guide rail 111, and then the first driving member 112 drives the first movable block, the first movable block pushes the caster frame 700 into the transfer assembly, when the first movable block pushes the caster frame 700 into the transfer assembly, the first movable block blocks the discharge end of the first guide rail 111 to avoid interference caused by continuing to send out the caster frame 700. It should be noted that the first driving member 112 can be a pneumatic linear slide module or an electric linear slide module.

[0040] It is understandable that, referring to Figure 2 The transfer assembly includes a rotating disk 121 and a plurality of positioning fixtures 122. The rotating disk 121 is vertically arranged, and the plurality of positioning fixtures 122 are arranged at intervals along the circumference of the rotating disk 121. The positioning fixtures 122 are provided with a clamping groove along the radial direction of the rotating disk 121, and the clamping groove matches the caster frame 700. The rotating disk 121 is vertically arranged to reduce the occupied area. The rotating disk 121 is rotated to drive the positioning fixture 122 to circulate, and the caster frame 700 is inserted into the clamping groove. The friction between the side wall of the clamping groove and the caster frame 700 is achieved. At the same time, the clamping groove is arranged along the radial direction of the rotating disk 121, so that when the rotating disk 121 rotates, the caster frame 700 is stabilized on the positioning fixture 122.

[0041] It is understandable that, referring to Figure 3 The second loading assembly includes a second guide rail 211, a second driving member 213 and a second movable block 212. The second guide rail 211 is arranged along the first direction. The second movable block 212 has a first positioning groove, the first positioning groove is docked with the second guide rail 211, the first positioning groove is matched with the brake pad 701, and the second driving member 213 drives the second movable block 212 to move along the second direction. The brake pads 701 are sent to the second guide rail 211 one by one through the vibration plate, and then the brake pads 701 enter the first positioning groove, which is arranged along the first direction, and then the second driving member 213 drives the second movable block 212 to move, so that the brake pads 701 are separated from the second guide rail 211, which is convenient for the first manipulator 220 to grab. After the first manipulator 220 grabs the brake pads 701 from the first positioning groove, the second movable block 212 is reset, so that the first positioning groove is docked with the second guide rail 211 again. It should be noted that the first manipulator 220 includes a manipulator arm and a gripper, which are conventional technical applications and will not be described in detail herein.

[0042] It is understandable that, referring to Figure 4 The third loading assembly includes a third guide rail 311 and a first clamp 312. The first clamp 312 is arranged at the discharge end of the third guide rail 311, and the second manipulator is arranged at the lower end of the first clamp 312. The springs 702 are sent to the third guide rail 311 one by one through the vibration plate, and the discharge end of the third guide rail 311 discharges downward, and then the first clamp 312 is arranged at the lower end of the third guide rail 311. After the spring 702 is sent out of the third guide rail 311, it is clamped by the first clamp 312, and then the lower half of the spring 702 leaks out of the lower side of the first clamp 312, which is convenient for the second manipulator to clamp the spring 702, and then the second manipulator drives the spring 702 to move to the bottom of the first assembly mechanism 400, and prepares to install the spring 702 and the brake pad 701 together on the caster frame 700. It should be noted that when the second manipulator moves to the bottom of the first clamp 312, the second manipulator and the first clamp 312 are released, and when the spring 702 falls to the second manipulator, the second manipulator clamps the spring 702, and then the first clamp 312 clamps the spring 702 sent out from the third guide rail 311, thereby realizing continuous feeding of the spring 702.

[0043] Specifically, refer to Figure 3 The second manipulator includes a third driving member and a second clamp 321, the second clamp 321 is arranged at the movable end of the third driving member, and the second clamp 321 includes two first clamping blocks, and the two first clamping blocks cooperate with the clamping spring 702. It should be noted that the third driving member is a clamping cylinder.

[0044] It is understandable that, referring to Figure 3The first assembly mechanism 400 includes a fourth driving member 430, a supporting component and a third clamp. The third clamp is arranged above the supporting component. The third clamp clamps the brake pad 701. The supporting component can abut against the brake pad 701 from bottom to top through the spring 702. The fourth driving member 430 drives the third clamp and the supporting component to be inserted into the caster frame 700. The third clamp includes two second clamping blocks 411, and the two second clamping blocks 411 are respectively arranged on both sides of the rotating disk 121. The two second clamping blocks 411 are driven to move by two sets of electric linear slide modules. The first manipulator 220 moves the brake pad 701 between the two second clamping blocks 411, and then the two second clamping blocks 411 clamp the brake pad 701, and the supporting component moves to the bottom of the second manipulator, and the supporting component moves upward. At the same time, the second manipulator releases the spring 702, so that the spring 702 falls on the supporting component, and is driven to abut against the brake pad 701 and be compressed than the supporting component, and then the fourth driving member 430 simultaneously drives the supporting component and the third clamp to extend into the mounting hole of the caster frame 700, and then the supporting component is reset to release the spring 702 and install it on the mounting hole, and then the two second clamping blocks 411 separate, releasing the brake pad 701, and the spring 702 lifts the brake pad 701 so that the brake pad 701 is installed on the caster frame 700. It should be noted that the fourth driving component 430 is a linear slide module.

[0045] It is understandable that, referring to Figure 3 The supporting member includes a support block 421 and a fifth driving member 422. The fifth driving member 422 drives the support block 421 to move in the vertical direction. The fifth driving member 422 is arranged on the movable end of the fourth driving member 430. The support block 421 is in a long strip shape as a whole, which facilitates the support plate to extend into the mounting hole. The fifth driving member 422 can be a linear cylinder or an electric push rod 526.

[0046] It is understandable that, referring to Figure 4The handle assembly module 510 includes a fourth guide rail 511, a sixth driving member, a third movable block 512 and a third manipulator 513 arranged along the first direction. The third movable block 512 is arranged at the discharge end of the fourth guide rail 511. The third movable block 512 is provided with a second positioning groove, the second positioning groove is docked with the fourth guide rail 511, and the second positioning groove is matched with the handle 703. The sixth driving member drives the third movable block 512 to move along the second direction, and the third manipulator 513 installs the handle 703 from the third movable block 512 to the caster frame 700. The handles 703 are sent to the fourth guide rail 511 one by one through the vibration plate, and then the handles 703 enter the second positioning groove from the fourth guide rail 511, and then the sixth driving member drives the third movable block 512 to move, and the handles 703 are sent out, which is convenient for the third manipulator 513 to grab. After the third manipulator 513 grabs the handle 703, the handle 703 is installed on the caster frame 700, so as to realize the installation of the handle 703 and the caster frame 700. It should be noted that the sixth driving member may be a linear cylinder or an electric push rod 526 .

[0047] It is understandable that, referring to Figure 5 and Figure 6 The pin assembly module 520 includes a fifth guide rail, a guide block 521, a seventh drive member 524 and an eighth drive member 525. The discharge end of the fifth guide rail is arranged in the horizontal direction. The guide block 521 is provided with a first pipe 522 and a second pipe 523. The first pipe 522 is connected to the fifth guide rail. The first pipe 522 and the second pipe 523 are parallel to each other and connected. The second pipe 523 is connected to the transfer component. The seventh drive member 524 drives the pin 704 to be transported from the first pipe 522 to the second pipe 523. The eighth drive member 525 drives the pin 704 to be inserted from the second pipe 523 to the caster frame 700. The pins 704 are sent out one by one through the vibration plate, and the pins 704 are sent to the guide block 521 along the fifth guide rail and enter the first conduit, and then the seventh driving member 524 is started to send the pins 704 into the second pipe 523, and the second pipe 523 matches the pins 704, so that only one pin 704 enters the second pipe 523 at a time, and then the eighth driving member 525 drives the pins 704 to be sent out from the second pipe 523, and pass through the caster frame 700 and the handle 703, so that the handle 703 is hinged on the caster frame 700. It should be noted that the seventh driving member 524 can be a linear cylinder or an electric push rod 526, and the movable end of the seventh driving member 524 is provided with a push rod 526, which is inserted into the second pipe 523, and the pins 704 are pushed by the push rod 526 to be inserted into the caster frame 700.

[0048] It is understandable that, referring to Figure 7The discharging mechanism includes a ninth driving member 611 and a fourth movable block 612. The ninth driving member 611 drives the fourth movable block 612 to move, and the fourth movable block 612 pushes the caster frame 700 out of the positioning groove on the positioning fixture 122, so that the caster frame 700 is separated from the transfer assembly, and the caster frame 700 is discharged. It should be noted that the ninth driving member 611 can be a linear cylinder or an electric push rod 526.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Caster assembly equipment, characterized in that: include: The transfer mechanism comprises a first loading assembly and a transfer assembly, wherein the first loading assembly is used to deliver the caster frames one by one to the transfer assembly; The brake pad feeding mechanism comprises a second feeding assembly and a first manipulator, wherein the second feeding assembly is used to feed the brake pads one by one, and the first manipulator is used to grab the brake pads; The spring feeding mechanism comprises a third feeding assembly and a second manipulator, wherein the third feeding assembly is used to feed the springs one by one, and the second manipulator is used to grab the springs; A first assembly mechanism cooperates with the first manipulator and the second manipulator to assemble the brake pad and the spring and then install them on the caster frame; The second assembly mechanism includes a handle assembly module and a pin assembly module. The handle assembly module sends out the handles one by one and assembles the handles to the caster frame. The pin assembly module sends out the pins one by one and passes the pins through the caster frame and the handle at the same time. Wherein, the first assembling mechanism and the second assembling mechanism are arranged in sequence along the moving direction of the transfer mechanism.

2. The caster assembly device according to claim 1, characterized in that: The first loading assembly includes a first guide rail, a first driving member and a first movable block. The first guide rail is arranged along a first direction. A stop block is arranged at the discharge end of the first guide rail. The distance between the stop block and the first guide rail matches the caster frame. The first driving member drives the first movable block to move along a second direction to send the caster frame into the transfer assembly. The first direction and the second direction are perpendicular to each other.

3. The caster assembly device according to claim 2, characterized in that: The transfer assembly includes a rotating disk and a plurality of positioning fixtures. The rotating disk is vertically arranged. The plurality of positioning fixtures are arranged at intervals along the circumference of the rotating disk. The positioning fixtures are provided with a clamping groove, and the clamping groove matches the caster frame.

4. The caster assembly device according to claim 1, characterized in that: The second feeding assembly includes a second guide rail, a second driving member and a second movable block. The second guide rail is arranged along the first direction. The second movable block has a first positioning groove. The first positioning groove is connected to the second guide rail. The first positioning groove matches the brake pad. The second driving member drives the second movable block to move along the second direction.

5. The caster assembly device according to claim 1, characterized in that: The third loading assembly includes a third guide rail and a first clamp, the first clamp is arranged at the discharge end of the third guide rail, and the second manipulator is arranged at the lower end of the first clamp.

6. The caster assembly device according to claim 5, characterized in that: The second manipulator includes a third driving member and a second clamp, the second clamp is arranged at the movable end of the third driving member, and the second clamp includes two first clamping blocks, and the two first clamping blocks cooperate to clamp the spring.

7. The caster assembly device according to claim 6, characterized in that: The first assembly mechanism includes a fourth driving member, a supporting component and a third clamp, the third clamp is arranged above the supporting component, the third clamp clamps the brake pad, the supporting component can abut the brake pad from bottom to top with the spring, and the fourth driving member drives the third clamp and the supporting component to be inserted into the caster frame.

8. The caster assembly device according to claim 7, characterized in that: The supporting component includes a supporting block and a fifth driving member. The fifth driving member drives the supporting block to move in a vertical direction. The fifth driving member is arranged on the movable end of the fourth driving member.

9. The caster assembly device according to claim 1, characterized in that: The handle assembly module includes a fourth guide rail, a sixth driving member, a third movable block and a third manipulator arranged along a first direction, the third movable block is arranged at the discharge end of the fourth guide rail, the third movable block is provided with a second positioning groove, the second positioning groove is docked with the fourth guide rail, the second positioning groove matches the handle, the sixth driving member drives the third movable block to move along the second direction, and the third manipulator installs the handle from the third movable block to the caster frame.

10. The caster assembly device according to claim 1, characterized in that: The pin assembly module includes a fifth guide rail, a guide block, a seventh drive member and an eighth drive member. The discharge end of the fifth guide rail is arranged in the horizontal direction. The guide block is provided with a first pipe and a second pipe. The first pipe is connected to the fifth guide rail. The first pipe and the second pipe are parallel and connected to each other. The second pipe is connected to the transfer component. The seventh drive member drives the pin shaft to be transported from the first pipe to the second pipe. The eighth drive member drives the pin shaft to be inserted from the second pipe to the caster frame.

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