TW201615495A - Marking device - Google Patents

Abstract

A marking device is configured to mark a workpiece. The marking device includes a supporting bracket, a lifting mechanism, and a marking mechanism. The lifting mechanism and the marking mechanism are mounted on the supporting bracket. The marking device further includes a putting mechanism and a taking mechanism. The lifting mechanism and the putting mechanism both include a first driving member and a supporting assembly. The first driving member is mounted on the supporting bracket. The supporting assembly is mounted on the first driving member. The taking mechanism includes a pushing member slidably mounted on the supporting bracket and a taking assembly mounted on the pushing member. The pushing member can drive the taking assembly move towards the supporting assembly of the lifting mechanism or towards the supporting assembly of the putting mechanism.

Description

Marking mechanism

The invention relates to a marking device.

It is usually required to mark the workpiece during the processing. Currently, the commonly used marking device includes a clamping mechanism and a marking mechanism. The clamping mechanism is used for clamping the workpiece conveyed by the belt to the marking mechanism, so that the marking mechanism marks the workpiece to be marked. After the marking is completed, the gripping mechanism lowers the workpiece to the conveyor belt to transfer the workpiece after the marking is completed to the discharge port. However, when the marking mechanism does not pick up and mark all the incoming materials in time, the markings are completed and the unmarked workpieces are sent to the same discharge port. Finally, the operator needs to distinguish the beatings. The standard workpiece and the unmarked workpiece increase the workload of the operator and are less efficient.

In view of the above situation, it is necessary to provide a marking device capable of improving marking efficiency.

A marking device for marking a workpiece, the marking device comprising a support frame, and a lifting mechanism and a marking mechanism respectively mounted on the support frame, the marking device further comprising a mounting frame a lifting mechanism and a reclaiming mechanism, the lifting mechanism and the lowering mechanism each include a first driving member fixed to the supporting frame and a supporting assembly fixed to the first driving member, the reclaiming mechanism comprising a sliding device a pushing member disposed on the support frame and a picking assembly fixed to the pushing member, the pushing member capable of driving the picking assembly to move toward the supporting assembly of the lifting mechanism or the supporting assembly toward the lowering mechanism.

The marking device of the invention moves the take-up mechanism for grasping the workpiece to the lowering mechanism by the sliding mechanism by designing the lowering mechanism, the marking mechanism is disposed adjacent to the lowering mechanism, and the workpiece on the lowering mechanism is marked The unmarked workpiece is sent to a discharge port by a conveyor belt disposed adjacent to the lifting mechanism, and the marked workpiece is transferred from the conveyor belt disposed adjacent to the lower discharge to the other discharge port, without the operator separating the marking workpiece again. Unmarked workpieces save resources and improve marking efficiency.

1 is a schematic perspective view of the marking device of the present invention.

2 is a partial perspective assembly view of the marking device shown in FIG. 1.

Figure 3 is an exploded perspective view of the marking device of Figure 2.

4 is an enlarged view of the sliding mechanism and the reclaiming mechanism of the marking device shown in FIG. 3.

Figure 5 is an enlarged view of the lifting mechanism of the marking device shown in Figure 3.

Figure 6 is an enlarged view of the lowering mechanism of the marking device shown in Figure 3.

Figure 7 is an enlarged plan view showing another perspective of the assembly of the support frame, the positioning mechanism and the conveyor of the marking device shown in Figure 3.

FIG. 8 is a schematic perspective view of the marking device of FIG. 3 omitting the marking mechanism. FIG.

Referring to FIG. 1 to FIG. 2, the marking device 100 of the present invention is used for marking the workpiece 200 to be marked. The marking device 100 includes a support frame 10, and a conveyor belt 20, a lifting mechanism 31, a lowering mechanism 32, a positioning mechanism 40, a sliding mechanism 50, a reclaiming mechanism 60, a marking mechanism 70, and sensing, both of which are mounted on the support frame 10. The controller 80 and the controller 90. Conveyor belt 20 is used to convey workpiece 200. The lifting mechanism 31 is used to lift the conveyor belt 20 to the workpiece to be marked 200 at a preset position, and the lifting mechanism 31 is capable of guiding the workpiece 200 during the conveyance of the workpiece 200 by the conveyor belt 20. The lowering mechanism 32 is used to place the marked workpiece 200 on the conveyor 20. Positioning mechanism 40 is used to position workpiece 200. The take-up mechanism 60 is fixed to the slide mechanism 50, and the slide mechanism 50 can drive the take-up mechanism 60 to move relative to the support frame 10. The marking mechanism 70 is used to mark the workpiece 200 to be marked. The sensor 80 is mounted on the lifting mechanism 31 for sensing whether the workpiece 200 reaches the lifting mechanism 30. The sensor 80, the lifting mechanism 31, the lowering mechanism 32, the positioning mechanism 40, the reclaiming mechanism 60, and the marking mechanism 70 are all electrically connected to the controller 90. In the embodiment, the workpiece 200 is attached with a two-dimensional code; the lifting mechanism 31, the lowering mechanism 32, the positioning mechanism 40, the sliding mechanism 50, the reclaiming mechanism 60, the marking mechanism 70, the sensor 80, and the controller 90 are all three.

Referring to FIG. 3 to FIG. 8 together, the lifting mechanism 31 and the lowering structure 32 are both fixed on the support frame 10 and disposed side by side on the conveyor belt 20. The lifting mechanism 31 has the same structure as the lowering mechanism 32. To simplify the description, only the lifting mechanism 31 will be specifically described below.

The lifting mechanism 31 includes two first driving members 311 and a supporting assembly 313 mounted on the two first driving members 311. The first driving member 311 is electrically connected to the controller 90. The two first driving members 311 are fixed on the support frame 10 , and the two first driving members 311 are disposed on two sides of the supporting assembly 313 in parallel with each other. The driving end of the second driving member 311 is connected to the supporting component 313. The two first driving members 311 are capable of driving the support assembly 313 to move toward or away from the conveyor belt 20 under the control of the controller 90. The support assembly 313 includes two guide members 3131 disposed in parallel with each other and two connecting members 3133 disposed in parallel with each other. The two guiding members 3131 and the two connecting members 3133 together form a rectangular frame. The two guiding members 3131 disposed in parallel with each other are substantially L-shaped, and the two guiding members 3131 collectively form an opening 3130 through which the workpiece 200 passes. The opening 3130 is located between the conveyor belt 20 and the connector 3133. Each of the guiding members 3131 includes a guiding portion 3134 and a supporting portion 3135 fixed to the guiding portion 3134. The guide portion 3134 and the support portion 3135 of each of the guide members 3131 are plate-shaped. The support portion 3135 of each of the guide members 3131 is formed by a vertical extension of the corresponding guide portion 3134 adjacent to one side of the conveyor belt 20 toward the guide portion 3134 of the other guide member 3131, and the two support portions 3135 of the two guide members 3131 are located at the support assembly 313. The inside. The two ends of each connecting member 3133 are respectively fixed to one end of the two guiding portions 3134 in the same direction, and each connecting member 3133 is located at one side of the guiding portion 3134 away from the supporting portion 3135. Each of the connecting members 3133 is fixed to the driving end of the corresponding first driving member 311. The conveyor belt 20 is comprised of a plurality of drive cables, each guide member 3131 being located between two adjacent conveyor ropes.

The positioning mechanism 40 is fixed to the support frame 10 and disposed adjacent to the lowering mechanism 32 for positioning the workpiece 200 on the lowering mechanism 32. The positioning mechanism 40 includes two positioning members 41, a second driving member 42, a third driving member 43, a first positioning block 44, and a second positioning block 45. The two positioning members 41 are fixed on the support frame 10, and the two positioning members 41 are disposed adjacent to one of the connecting members 3133 of the lowering mechanism 32, and the connecting member 3133 is perpendicular. The second driving member 42 and the third driving member 43 are electrically connected to the controller 90. The second driving member 42 is fixed to the support frame 10, and the second driving member 42 is located above the connecting member 3133 of the lowering mechanism 32 away from the positioning member 41. A first positioning block 44 is fixed to the driving end of the second driving member 42. The driving end of the second driving member 42 can drive the first positioning block 44 to move in the direction of the positioning member 41 under the control of the controller 90. The third driving member 43 is fixed to the support frame 10. The third driving member 43 is located on one side of the lowering mechanism 32 away from the lifting mechanism 31, and the third driving member 43 is located above the lowering mechanism 32. A second positioning block 45 is fixed to the driving end of the third driving member 43. The driving end of the third driving member 43 can drive the second positioning block 45 to move in the direction of the vertical guiding member 3131 under the control of the controller 90. In the present embodiment, the second driving member 42 and the third driving member 43 are both cylinders.

The sliding mechanism 50 includes a screw 51 and a slider 53 slidably mounted on the screw 51. The screw 51 is rotatably mounted on the support frame 10, and the extending direction of the screw 51 is perpendicular to the extending direction of the guide member 3131. In the present embodiment, the screw 51 is a screw, and the slider 53 is screwed to the screw 51 so that the slider 53 can move on the screw 51 during the rotation of the screw 51. Further, the sliding mechanism 50 further includes a power member 55 electrically connected to the controller 90. The power member 55 is mounted on the support frame 10 and connected to the screw 51. The power member 55 is capable of driving the screw 51 to rotate under the control of the controller 90 to move the slider 53 on the screw 51. In the present embodiment, the power member 55 may be a motor, an air cylinder, or the like as long as the screw 51 can be driven to rotate.

The reclaiming mechanism 60 is fixed to the slider 53. The reclaiming mechanism 60 includes a fixing member 61, a pushing member 63, and a picking assembly 64 fixed to the pushing member 63. The fixing member 61 has a plate shape, and one end of the fixing member 61 is fixed to the sliding member 53. The sliding member 53 can drive the fixing member 61 to slide in the extending direction of the screw 51, that is, the sliding direction of the fixing member 61 on the sliding member 53 is slid above the lifting mechanism 31 to the upper portion of the lowering mechanism 32 or sliding over the lowering mechanism 32. Up to the top of the lifting mechanism 31. The pushing member 63 is fixed to the free end of the fixing member 61, and the pushing member 63 is electrically connected to the controller 90. The take-up assembly 64 is secured to the pusher 63 for gripping the workpiece 200. The fixing member 61 is slid on the screw 51 by the sliding member 53. The fixing member 61 can move along the extending direction of the screw 51 by driving the pushing member 63, thereby driving the picking assembly 64 from above the supporting member 313 of the lifting mechanism 31. It is moved above the support assembly 313 of the lowering mechanism 32. In the present embodiment, the pusher 63 is a cylinder.

The take-up assembly 64 includes a fixing plate 641 and four pick-up members 643 fixed to the fixing plate 641. The fixing plate 641 is fixed to the driving end of the pushing member 63, and the pushing member 63 can drive the fixing plate 641 to move toward or away from the supporting member 313 under the control of the controller 90. The four take-up members 643 are mounted on the four corners of the fixed plate 641, and the four take-up members 643 are located on one side of the support assembly 313 away from the conveyor belt 20. In the present embodiment, the four reclaiming members 643 are suction cups, and the vents thereof communicate with an external air source (not shown) through a gas pipe (not shown). Further, the take-up assembly 64 also includes four mounts 645. A mounting hole 6451 is defined in one end of each mounting member 645 for the corresponding picking member 643 to pass through. One end of the four mounting members 645 away from the mounting hole 6451 is respectively fixed to the four corners of the fixing plate 641. One end of the four retracting members 643 respectively passes through the mounting holes 6451 of the corresponding mounting members 645, and the four reclaiming members 643 are respectively fixed to the corresponding mounting members 645.

The marking mechanism 70 is fixed to the support frame 10 for marking the workpiece 200. The marking mechanism 70 includes a scanning member 71, a base 73, and a marking member 75. The scanning member 71 is mounted on the support frame 10 and disposed adjacent to the lifting mechanism 31, and the scanning member 71 is located below the conveyor belt 20 for scanning the two-dimensional code on the workpiece 200. The scanning member 71 is electrically connected to the controller 90, and the scanning member 71 can transmit the two-dimensional code information of the scanned workpiece to the controller 90. The base 73 is mounted on the support frame 10. The marking member 75 is slidably mounted on the base 73 and is located above the lowering mechanism 32. In the present embodiment, the marking member 75 is a laser marking machine. Further, the base 73 is provided with a slide rail 76 in the direction of the vertical conveyor belt 20, and the marking member 75 is slidably disposed on the slide rail 76, so that the marking member 75 can be adjusted and to be marked on the lowering mechanism 32. The distance of the workpiece 200.

The sensor 80 is fixed to the connecting member 3133 of the lifting mechanism 31 for sensing whether the workpiece 200 reaches the guiding member 3131 of the lifting mechanism 31 and transmitting information to the controller 90 to enable the controller 90 to acquire the workpiece to be marked 200. The information to be marked is controlled, and the marking member 75 is controlled to mark the workpiece 200. It can be understood that in other embodiments, the sensor 80 is not limited to the connector 3133 fixed to the lifting mechanism 31, and the sensor 80 can also be fixed on the support frame 10 as long as the sensor 80 can sense that the workpiece 200 reaches the lifting mechanism 31. The guide member 3131 can be used.

During assembly, the conveyor belt 20 is rotatably mounted on the support frame 10; the lifting mechanism 31 and the lowering mechanism 32 are fixed to the support frame 10, and the lifting mechanism 31 is disposed side by side with the lowering mechanism 32, and is located above the conveyor belt 20. The positioning mechanism 40 is mounted on the support frame 10, and the second driving member 42 is disposed adjacent to the connecting member 3133 of the lowering mechanism 32 away from the positioning member 41. The third driving member 43 is located at one of the lowering mechanism 32 away from the lifting mechanism 31. The sliding mechanism 50 is mounted on the support frame 10, and the extending direction of the screw 51 is perpendicular to the extending direction of the guiding member 3131; the reclaiming mechanism 60 is fixed to the sliding mechanism 50, and the movement of the reclaiming mechanism 60 is performed. The direction is moved above the support assembly 313 of the lifting mechanism 31 above the support assembly 313 of the lowering mechanism 32 or above the support assembly 313 of the lowering mechanism 32 to above the support assembly 313 of the lifting mechanism 31.

In use, the controller 90 controls the first driving member 311 of the lifting mechanism 31 to drive the support assembly 313 of the lifting mechanism 31 toward the conveyor belt 20, and the second supporting portion 3135 of the lifting mechanism 31 is located below the conveyor belt 20; the operator will be waiting The target workpiece 200 is placed on the conveyor belt 20, and the conveyor belt 20 transports the workpiece 200 onto the guide member 3131; the sensor 80 senses that the workpiece 200 reaches the preset position on the guide member 3131 and transmits the information to the controller 90; the controller 90 controls The first driving member 311 of the lifting mechanism 31 drives the supporting assembly 313 of the lifting mechanism 31 to move away from the conveyor belt 20, and the two supporting portions 3135 of the lifting mechanism 31 are positioned above the conveyor belt 20, while the controller 90 controls the lowering mechanism 32. The first driving member 311 drives the support assembly 313 of the lowering mechanism 32 to move away from the conveyor belt 20, and the two supporting portions 3135 of the lowering mechanism 32 are positioned above the conveyor belt 20.

After the support component 313 of the to-be-lifted mechanism 31 is lifted to the preset position, the scanning component 71 scans the workpiece 200 and transmits the scan information to the controller 90 to acquire the two-dimensional code information corresponding to the workpiece 200; the controller 90 according to the The two-dimensional code of the workpiece 200 acquires information that the workpiece 200 needs to be marked; the controller 90 controls the pusher 63 to drive the pick-up assembly 64 to move toward the workpiece 20 on the lifting mechanism 31 to the four take-up member 643, and then control the pusher 63 to drive The picking assembly 64 lifts the workpiece 200 above the support assembly 313 of the lifting mechanism 31; the controller 90 controls the power member 55 to drive the screw 51 to rotate, so that the slider 53 drives the picking assembly 64 that grabs the workpiece 200 by the lifting mechanism. The upper portion of the support assembly 313 moves over the support assembly 313 of the lowering mechanism 32; the controller 90 controls the pusher 63 to drive the pick-up assembly 64 to move toward the support assembly 313 of the lowering mechanism 32, and the four take-up members 643 place the workpiece thereon. The support assembly 313 of the lowering mechanism 32 is mounted.

The controller 90 controls the power member 55 to drive the screw 51 to drive the take-up assembly 64 to move above the support assembly 313 of the lowering mechanism 32 to above the support assembly 313 of the lifting mechanism 31, so that the next workpiece to be marked 200 is transferred to the guide member. The controller 90 controls the second driving member 42 and the third driving member 43 to drive the first positioning block 44 and the second positioning block 45 to move toward the workpiece 200, wherein the driving end of the second driving member 42 drives the first positioning block. The workpiece 200 is moved toward the two positioning members 41 disposed opposite to the second driving member 42 to abut the positioning member 41 near the side of the positioning member 41 while the driving end of the third driving member 43 drives the second positioning. The block 45 pushes the workpiece 200 away from the side of the lifting mechanism 31 toward the lifting mechanism 31 to move the workpiece 200 away from the side of the third driving member 43 against the guiding portion 3134 of the lowering mechanism 32 to realize the positioning mechanism 40 to the workpiece. 200 for positioning.

The controller 90 controls the marking member 75 to mark the workpiece 200; after the marking is completed, the controller 90 controls the first driving member 311 of the lowering mechanism 32 to drive the supporting assembly 313 of the lowering mechanism 32 toward the conveyor belt 20, and causes the lowering The support portion 3135 of the mechanism 32 is located below the conveyor belt 20 to place the finished workpiece 200 on the conveyor belt 20, and the conveyor belt 20 conveys the workpiece 200 to the discharge port.

In the present embodiment, the marking device 100 moves the take-up mechanism 60 that has the workpiece 200 grasped by the lifting mechanism 31 to the lowering mechanism 32 by the sliding mechanism 50, and the marking mechanism 70 is set by the designing mechanism 31 and the lowering mechanism 32. Above the lowering mechanism 32, the workpiece 200 on the lowering mechanism 32 is marked, so that the unmarked workpiece 200 is sent out to a discharge port by the conveyor belt 20 below the lifting mechanism 31, and the finished workpiece 200 is marked by The conveyor belt 20 below the lowering mechanism 32 is transferred to another discharge port, eliminating the need for the operator to separate the marking workpiece 200 and the unmarked workpiece 200 again, saving resources, and improving the distinction between the marking finished workpiece 200 and the unmarked workpiece 200. effectiveness.

It can be understood that in other embodiments, the take-up member 643 may not be a suction cup, and the take-up member 643 may be other jaws or the like, as long as the take-up member 643 can grasp the workpiece 200, for example, when the surface of the workpiece 200 is not flat, the clip can be used. The claws directly grasp the workpiece 200.

It can be understood that in other embodiments, the number of the take-up members 643 can be one, and the pick-up member 643 sucks up the workpiece 200.

It can be understood that in other embodiments, the third driving member 43 can be omitted, and only the first positioning block 44 and the positioning member 41 can be positioned; further, the positioning member 41 can also be omitted, by the first positioning block 44. The workpiece is clamped with the connector 3133 remote from the second drive member 42 to position the workpiece.

It can be understood that, in other embodiments, the screw 51 is not limited to the screw, and the slide rail can be mounted on the support frame 10, and then the fixing member 61 is slidably mounted on the slide rail; it can be understood that the fixing member 61 can be omitted. It suffices to fix the pusher 63 to the slider 53.

It can be understood that in other embodiments, the marking mechanism 70 can also be placed under the lowering mechanism 32 to mark the side of the workpiece 200 adjacent to the conveyor belt 20.

It can be understood that in other embodiments, the extending direction of the screw 51 may not be perpendicular to the guiding direction of the guiding member 3131. As long as the screw 51 moves under the action of the power member 55, the lifting mechanism 60 can be driven by the supporting assembly 313 of the lifting mechanism 31. The upper side is moved above the support assembly 313 of the lowering mechanism 32 or above the support assembly 313 of the lowering mechanism 32 to move over the support assembly 313 of the lifting mechanism 31.

It can be understood that in other embodiments, the retracting member 643 may not be a suction cup with a trachea. When the workpiece 200 has magnetic properties, the retrieving member 643 is a magnetic chuck.

It can be understood that in other embodiments, the number of the lifting mechanism 31, the lowering mechanism 32, the positioning mechanism 40, the sliding mechanism 50, the reclaiming mechanism 60, the marking mechanism 70, the sensor 80, and the controller 90 may also be one, two, or More than three, as long as the lifting mechanism 31, the lowering mechanism 32, the positioning mechanism 40, the sliding mechanism 50, the reclaiming mechanism 60, the marking mechanism 70, the sensor 80, and the controller 90 are paired.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100‧‧‧Marking device

10‧‧‧Support frame

20‧‧‧Conveyor belt

31‧‧‧ Lifting agency

311‧‧‧First drive

313‧‧‧Support components

3130‧‧‧ openings

3131‧‧‧ Guides

3133‧‧‧Connecting parts

3134‧‧‧Director

3135‧‧‧Support

32‧‧‧Decentralized institutions

40‧‧‧ Positioning agency

41‧‧‧ Positioning parts

42‧‧‧second drive

43‧‧‧ Third drive

44‧‧‧ Positioning block

50‧‧‧Sliding mechanism

51‧‧‧ screw

53‧‧‧Sliding parts

55‧‧‧Power parts

60‧‧‧Reclaiming agency

61‧‧‧Fixed parts

63‧‧‧Promoters

64‧‧‧Reclaiming components

641‧‧‧ fixed plate

643‧‧‧Removable parts

645‧‧‧Installation

6451‧‧‧Mounting holes

70‧‧‧Marking agency

71‧‧‧Scanned parts

73‧‧‧Base

75‧‧‧Marking

76‧‧‧rails

80‧‧‧ sensor

90‧‧‧ Controller

no

10‧‧‧Support frame

20‧‧‧Conveyor belt

31‧‧‧ Lifting agency

311‧‧‧First drive

32‧‧‧Decentralized institutions

63‧‧‧Promoters

64‧‧‧Reclaiming components

73‧‧‧Base

75‧‧‧Marking

76‧‧‧rails

90‧‧‧ Controller

Claims (10)

A marking device for marking a workpiece, the marking device comprising a support frame, and a lifting mechanism and a marking mechanism respectively mounted on the support frame, wherein the marking device further comprises: a lowering mechanism and a retrieving mechanism on the support frame, the lifting mechanism and the lowering mechanism each include a first driving member fixed to the supporting frame and a supporting component fixed to the first driving member, the reclaiming mechanism The utility model comprises a pushing member slidably mounted on the support frame and a picking assembly fixed to the pushing member, the pushing member capable of driving the picking assembly to move toward the supporting assembly of the lifting mechanism or the supporting assembly toward the lowering mechanism . The marking device of claim 1, wherein the retrieving assembly comprises a fixing member and at least one reclaiming member fixed to the fixing member, the fixing member is fixed on the driving end of the pushing member, The pushing member moves the lifting member toward the supporting assembly of the lifting mechanism to move the workpiece on the supporting assembly or to move the supporting assembly toward the lowering mechanism to drive the workpiece to the lowering mechanism by driving the fixing member On the support assembly. The marking device of claim 2, wherein the number of the retrieving members is four, the four reclaiming members are fixed to the fixing member, and the retrieving member is a suction cup. The marking device of claim 1, wherein the marking mechanism comprises a scanning member, a base and a marking member, the scanning member is mounted on the supporting frame and disposed adjacent to the lifting mechanism for The two-dimensional code on the workpiece is scanned, the base is mounted on the support frame, the marking member is slidably mounted on the base, and the marking member is located above the lowering mechanism. The marking device of claim 4, wherein the marking device further comprises a controller electrically connected to the scanning member and the marking member, the scanning member capable of scanning the workpiece The dimension code is transmitted to the controller to enable the controller to obtain information that needs to be marked to control the marking member to mark the workpiece. The marking device of claim 1, wherein the supporting assembly comprises two oppositely disposed guiding members and two oppositely disposed connecting members, and an opening is formed between the two guiding members for the workpiece to pass through, The two ends of the connecting member are respectively fixed on one end of the two guiding members in the same direction, and the first driving member is fixed on each connecting member, and each of the guiding members includes a guiding portion and is fixed on the guiding portion. The support portion is formed by each of the support portions protruding from the corresponding guide portion toward the other guide portion. The marking device of claim 6, wherein the marking device further comprises a positioning mechanism mounted on the support frame, the positioning mechanism comprising a positioning member, a second driving member and a second driving device a first positioning block on the piece, the positioning member is fixed on the support frame, and is disposed adjacent to one of the lowering mechanism connectors, the second driving member is fixed on the support frame, and another connection adjacent to the lowering mechanism And a second driving member capable of driving the first positioning block to move toward the positioning member. The marking device of claim 7, wherein the positioning mechanism further comprises a third driving component and a second positioning block fixed to the third driving component, the third driving component being mounted on the supporting frame And located at a side of the lowering mechanism away from the lifting mechanism, the third driving member can drive the second positioning block to move toward the guiding member of the lowering mechanism away from the third driving member. The marking device of claim 1, wherein the marking device further comprises a sliding mechanism mounted on the support frame, the sliding mechanism comprising a power component and a screw rotatably mounted on the support frame And a sliding member, the power component is mounted on the support frame, the screw is rotatably mounted on the support frame, and is connected to the power component, the sliding component is slidably mounted on the screw, and the material is taken The mechanism is fixed on the sliding member, and the power member is capable of driving the screw to rotate, so that the sliding member drives the reclaiming mechanism to move from above the supporting assembly of the lifting mechanism to above the supporting assembly of the lowering mechanism, or The support assembly of the lowering mechanism moves over the support assembly of the lifting mechanism. The marking device of claim 1, wherein the marking device further comprises a sensor mounted on the lifting mechanism, the sensor for sensing whether the workpiece reaches the supporting component of the lifting mechanism.