Turnover carrier

Abstract

The turnover carrier comprises a fixed seat and a rotating seat, the rotating seat is rotatably connected to the fixed seat around a first axis, and a workpiece placing position is arranged on the rotating seat; an inlet of the workpiece containing position is formed in the surface side of the rotating base, the rotating base is further provided with a machining communication opening, and the machining communication opening is communicated between the bottom of the workpiece containing position and the back side of the rotating base. The turnover carrier further comprises a supporting mechanism, the supporting mechanism is movably connected to the fixing base, the supporting mechanism comprises a supporting part, the supporting part is located below the rotating base, and the supporting part can move between a low position and a high position. The supporting mechanism at the low position avoids the rotating seat; when the rotating seat is in an inverted state and the supporting part is in a high position, the meter side faces downwards, and the supporting part is opposite to the workpiece placing position through the inlet. The positioning effect and machinability after overturning are guaranteed, compared with the prior art, a plurality of grabbing and overturning devices are omitted, and the manufacturing cost and the design difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic production equipment technical field, concretely relates to a kind of turnover carrier in automatic line in circulation in multiple work stations to position workpiece and assist to complete multiple processing. BACKGROUND

[0002] The existing carrier is used to circulate in multiple work stations in the automatic line to position workpieces and assist in completing multiple processing. Generally, the carrier is provided with a workpiece placement position, which can position the workpiece from the front-to-back direction and the left-to-right direction. Of course, the workpiece placement position also supports the workpiece from below.

[0003] Some products with complex processes need to be flipped multiple times during production. Therefore, a flipping device is provided at the work station that needs to be flipped in the existing automatic line. The flipping device needs to have the ability to perform multiple degrees of freedom actions such as taking out the workpiece from the carrier, flipping, and placing the workpiece into the carrier again. Under this setting, multiple flipping devices make the automatic line cost higher. In addition, the workpiece placement position of the carrier is required to meet the positioning requirements of the workpiece being placed and being placed upside down, such as needing to set workpiece placement positions for being placed and being placed upside down respectively. This setting increases the volume of the carrier. Alternatively, the same workpiece placement position is shared by being placed and being placed upside down, but the design of the workpiece placement position will be very complex, increasing the design difficulty and manufacturing cost. SUMMARY

[0004] The utility model aims to provide a kind of turnover carrier that can drive workpiece to flip, ensure the positioning effect after flipping and processability.

[0005] The turnover carrier provided by the utility model includes a workpiece placement position. The turnover carrier includes a fixed seat and a rotating seat. The rotating seat is rotatably connected to the fixed seat around a first axis. The workpiece placement position is arranged on the rotating seat. The entrance of the workpiece placement position is arranged on the surface side of the rotating seat. The rotating seat is also provided with a machining communication port. The machining communication port is communicated between the bottom of the workpiece placement position and the back side of the rotating seat. The back side is arranged opposite to the surface side. The turnover carrier also includes a supporting mechanism. The supporting mechanism is movably connected to the fixed seat. The supporting mechanism includes a supporting part. The supporting part is located below the rotating seat. The supporting part is movable between a low position and a high position. The supporting mechanism in the low position avoids the rotating seat. When the rotating seat is in an inverted state and the supporting part is in the high position, the surface side faces downward, and the supporting part is opposite to the workpiece placement position through the entrance.

[0006] From the above scheme can be seen, the utility model discloses a turnover carrier sets up the rotating seat, and workpiece is placed to rotating seat, and rotating seat can drive workpiece overturning, and in order to prevent the workpiece from falling from the entrance of workpiece placing position, still sets up the support mechanism, and the support mechanism that is not driven avoids rotating seat, under the driving of external force, the support mechanism can resist workpiece from below. In addition, the bottom of rotating seat is provided with the processing communication port of hollow avoidance, and rotating seat is overturned, and processing equipment can process and handle the back of workpiece through the processing communication port. Therefore, the utility model discloses a turnover carrier can drive workpiece overturning, guarantee the positioning effect and machinability after overturning, compared with prior art, can cancel the setting of multiple grabbing overturning devices, and the design difficulty of workpiece placing position is also lower, thereby reducing manufacturing cost and reducing design difficulty.

[0007] Further scheme is, the turnover carrier includes first buckling structure and second buckling structure, and the first buckling structure is arranged on the rotating seat, and the second buckling structure is floatingly arranged on the fixed seat;One second buckling structure is arranged on the first side of the first axis, when rotating seat is in the normal state, the first buckling structure is buckled with the second buckling structure;And / or, another second buckling structure is arranged on the second side of the first axis, when rotating seat is in the inverted state, the first buckling structure is buckled with the second buckling structure.

[0008] From the above, the setting of the first buckling structure and the second buckling structure makes rotating seat can be stabilized in the current state, improves the reliability of the carrier, guarantees the smooth progress of automatic processing.

[0009] Still further scheme is, the first buckling structure is a rod, and the rod moves in the plane perpendicular to the first axis when rotating seat rotates;The rod is the driven part when the rod as rotating drive device drives rotating seat to rotate around the first axis.

[0010] From the above, the rod can not only be buckled by the second buckling structure as the first buckling structure to achieve the fixing effect, but also can be forced as the forced part of the rotating drive device, and the rod is driven to force rotating seat to rotate. This setting reduces the number of carrier parts and simplifies the structure of the carrier.

[0011] Still further scheme is, the second buckling structure is along the axial direction of the first axis, and the second buckling structure includes the convex tooth and the recess position arranged in sequence in the circumferential direction of the first axis;The leading and trailing sides of the convex tooth are provided with guide surfaces in the circumferential direction of the first axis;The rod and the convex tooth abut to force the second buckling structure to float during the rotating process of rotating seat;When rotating seat is in the normal state or the inverted state, the rod is buckled with the recess position.

[0012] From the above, in order to further simplify the carrier structure, the floating of the second buckling structure is directly triggered by the first buckling structure, when the rod is subjected to driving force and tends to swing, the rod abuts against the guide surface in turn and forces the second buckling structure to float and release the cooperation with the rod.

[0013] In addition, the further scheme is that the reversible carrier further comprises a side blocking mechanism, the side blocking mechanism comprises a side blocking part; the side blocking mechanism is floatingly arranged on the rotating seat, and the side blocking part blocks the workpiece placing position from the axial direction of the first axis; the side blocking mechanism is forced to sink away from the current position and release the blocking of the workpiece placing position by the side blocking part.

[0014] From the above, the reversible carrier of the utility model is also used for assembling the thermal printing head, especially for assembling the bracket of the thermal printing head and the heat dissipation plate. The bracket needs to be overlapped to the back of the heat dissipation plate and is screwed on the side where the back is located. However, considering the particularity of the shape of the bracket, the manipulator cannot grab the bracket from the back side of the bracket. Therefore, the bracket is better in the posture of facing upwards and being flush and is transferred to the horizontal side of the heat dissipation plate and then is translated and pushed into the lower part of the heat dissipation plate. However, this will cause a technical problem: in the case that the bracket needs a certain space when being horizontally moved and transferred, the carrier cannot limit the bracket from the length of the thermal printing head, thus affecting the positioning effect. Therefore, the utility model sets the floating side blocking mechanism. In the natural state, the side blocking mechanism limits the bracket from the side. In the process that the bracket feeding manipulator places the bracket into the bracket placing position, the side blocking mechanism is forced to float and release the side blocking effect, that is, the lateral positioning problem is solved, and the space requirement problem of placing the bracket is also solved.

[0015] The further scheme is that the side blocking mechanism is rotatably arranged around the third axis, and the side blocking mechanism comprises a first elastic member; the side blocking mechanism comprises a first swing arm part and a second swing arm part, the first swing arm part and the second swing arm part are arranged on opposite sides of the third axis respectively, the side blocking part is arranged on the first swing arm part, and the first elastic member abuts between the second swing arm part and the rotating seat.

[0016] From the above, if the side blocking mechanism is arranged as a lifting floating structure, the total height includes the sum of the height of the side blocking part and the height of the elastic member; compared with the lifting floating, the floating of the side blocking mechanism is better realized in the form of rotation and swing, the first elastic member and the side blocking part are distributed in the horizontal direction, the total height of the side blocking mechanism is greatly reduced, and the structure design is optimized.

[0017] The further scheme is that when the rotating seat is in the normal state, at least a part of the first swing arm part, the third axis and the second swing arm part are located below the workpiece placing position.

[0018] From the above, under this setting, the side stop mechanism is arranged below the workpiece placing position, the first elastic member and the side stop portion make full use of the length of the rotating seat to be distributed, and the rotating seat does not need to be lengthened to complete the arrangement of the side stop mechanism.

[0019] Further, the side stop mechanism arranged on the first swing arm portion further comprises a supporting portion, the side stop portion is farther away from the third axis than the supporting portion, and the machining communication port is formed between the supporting portion and the bottom of the workpiece placing position.

[0020] From the above, the machining communication port is formed by the interval between the bottom of the rotating seat and the bottom of the side stop mechanism, and under this setting, the machining communication port is just opposite to the screw hole on the bracket, meeting the opening requirement for screwing.

[0021] In addition, the supporting mechanism is rotatably arranged around the second axis, the second axis is parallel to the first axis, the supporting portion is located at the circumferential position of the second axis, and the supporting mechanism further comprises an exposed forced portion, the forced portion and the supporting portion are arranged on opposite sides of the second axis, respectively.

[0022] From the above, under this setting, the forced portion is pressed down by the cylinder or other driving device, so that the supporting portion swings up to the high position and is kept at the high position, thereby realizing the supporting function.

[0023] Further, the supporting portion comprises a first positioning pin and a second positioning pin, in the axial projection of the second axis, the first positioning pin is farther away from the second axis than the second positioning pin, and the first positioning pin is shorter than the second positioning pin.

[0024] From the above, the arrangement of the first positioning pin and the second positioning pin can greatly reduce the contact degree between the supporting portion and the surface of the workpiece, avoiding damage to the workpiece; further, considering that the supporting mechanism is a swing structure and the posture of the supporting portion reaching the high position, in order to ensure that the supporting points of the first positioning pin and the second positioning pin reaching the high position are in the same horizontal plane and can provide support, the height difference of the first positioning pin and the second positioning pin is designed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the heat-sensitive print head workpiece placed by the reversible carrier of the utility model.

[0026] Figure 2 The structure diagram of the first perspective view of the embodiment of the reversible carrier of the utility model.

[0027] Figure 3 The structure diagram of the second perspective view of the embodiment of the reversible carrier of the utility model.

[0028] Figure 4 The structure diagram of the rotating seat in the embodiment of the reversible carrier of the utility model.

[0029] Figure 5 It is the structure diagram of the side stop mechanism in the embodiment of the utility model rotatable carrier.

[0030] Figure 6 It is the action principle diagram of the side stop mechanism in the embodiment of the utility model rotatable carrier.

[0031] Figure 7 It is the structure diagram of the support mechanism in the embodiment of the utility model rotatable carrier.

[0032] Figure 8 It is the schematic diagram of the embodiment of the utility model rotatable carrier when the rotating seat is in the upright state.

[0033] Figure 9 It is the schematic diagram of the embodiment of the utility model rotatable carrier when the rotating seat is in the inverted state. DETAILED DESCRIPTION

[0034] Referring to Figure 1 The rotatable carrier of the utility model places the heat-sensitive print head workpiece, which includes a heat dissipation plate 91 and two supports 92, wherein the heat dissipation plate 91 is a long strip plate, and the two supports 92 are connected by screws at the length ends of the heat dissipation plate 91, specifically, the heat dissipation plate 91 includes a surface 911 and a back surface 912 arranged oppositely along the plate thickness direction, the heat dissipation plate 91 includes a connecting part 921, the connecting part 921 is provided with a through hole 922 for screwing, the connecting part 921 needs to be overlapped with the heat dissipation plate 91 on the back surface 912 side along the plate thickness direction of the heat dissipation plate 91, and the screw needs to be screwed from the back surface 912 side through the through hole 922, and the screw is screwed with the heat dissipation plate 91 to realize the fixation between the heat dissipation plate 91 and the support 92.

[0035] Referring to Figure 2 , Figure 3 and Figure 5 , the x-axis direction and the y-axis direction are both horizontal directions, and the z-axis direction is vertical, wherein the x-axis direction is the length direction of the rotatable carrier, the x-axis direction is also the axial direction of the first axis 100 and the axial direction of the second axis 300 in the utility model, the y-axis direction is the width direction of the rotatable carrier, and the y-axis direction is also the axial direction of the third axis 500 in the utility model.

[0036] Referring to Figure 2 and Figure 3 , the rotatable carrier includes a fixed seat 1, a rotating seat 2, a support mechanism 3, a buckling mechanism 4 and a side stop mechanism 5.

[0037] The fixed seat 1 is the base of the rotatable carrier, and the fixed seat 1 can be installed and matched with the production line to enable the rotatable carrier to circulate in the production line.

[0038] Combined with Figures 2 to 4The rotating seat 2 is rotatably connected to the fixed seat 1 around the first axis 100, and the workpiece placing position 200 is arranged on the rotating seat 2, and the entrance 201 of the workpiece placing position 200 is arranged on the surface side of the rotating seat 2, Figures 2 to 4 The surface side of the rotating seat 2 is upward, the surface 911 of the heat dissipation plate 91 is toward the surface side of the rotating seat 2 after the heat dissipation plate 91 is placed in the workpiece placing position 200, and the surface 911 is outward through the entrance 201, and the back 912 of the heat dissipation plate 91 is downward and supports the bottom of the workpiece placing position 200. In addition, in the embodiment, the length direction of the rotating seat 2 is consistent with the axial direction of the first axis 100, and the length direction of the rotating seat 2 is consistent with the length direction of the heat dissipation plate 91.

[0039] The two side blocking mechanisms 5 are arranged on the rotating seat 2 in a floating manner and are located on both sides of the length direction of the workpiece placing position 200. Figure 2 The side blocking mechanism 5 shown in Figure 4 The side blocking mechanism 5 shown in Figure 2 The side blocking mechanism 5 shown in Figure 4 The side blocking mechanism 5 shown in

[0040] In combination with Figure 5 The side blocking mechanism 5 is rotatably connected to the rotating seat 2 around the third axis 500, the side blocking mechanism 5 includes the first swing arm part 51 and the second swing arm part 52, the first swing arm part 51 and the second swing arm part 52 are arranged on opposite sides of the third axis 500, the first swing arm part 51 is provided with the supporting part 511 and the side blocking part 53 which is protruded relative to the supporting part 511, and the side blocking part 53 is farther away from the third axis 500 than the supporting part 511; the side blocking mechanism 5 includes the first elastic member 54, the first elastic member 54 is a pressure spring, and the first elastic member 54 is abutted between the upper surface of the second swing arm part 52 and one lower surface of the rotating seat 2 (not shown in the figure).

[0041] In addition, in order to make the length and height of the rotating seat 2 smaller, the side blocking mechanism 5 is arranged by fully utilizing the length of the rotating seat 2, specifically, the side blocking mechanism 5 is arranged by utilizing the space below the workpiece placing position 200, when the rotating seat 2 is in the upright state, a part of the first swing arm part 51, the third axis 500 and the second swing arm part 52 are all below the workpiece placing position 200, and the supporting part 511 and the side blocking part 53 on the first swing arm part 51 are outside the workpiece placing position 200, and the workpiece placing position 200, the supporting part 511 and the side blocking part 53 are arranged in sequence along the length direction of the rotating seat 2.

[0042] In addition, since the rotating seat 2 itself is provided with a vertically penetrating communication opening on both sides of the length of the workpiece placement position 200, and the supporting portions 511 and the side blocking portions 53 of the two side blocking mechanisms 5 are respectively located in the two communication openings, the supporting portions 511 and the side blocking portions 53 cover a portion of the communication opening, and the portion of the communication opening that is not blocked and is located between the supporting portion 511 and the bottom of the workpiece placement position 200 becomes the processing communication opening 210 ( Figure 4 、 Figure 8 and Figure 9 As shown in FIG, the processing connecting port 210 is connected between the bottom of the workpiece placement position 200 and the back side of the rotating base 2, and the back side of the rotating base 2 is arranged opposite to the surface side of the rotating base 2.

[0043] Recombination Figure 6 Under the action of the restoring force of the first elastic member 54, the side block portion 53 is in a relatively high floating position. At this time, the side block portion 53 blocks the two ends of the workpiece placement position 200 from the axial direction of the first axis 100, that is, it can position the bracket 92 in the length direction, and the side block portion 53 can sink away from the current position after being forced, so that the side block portion 53 can release the blockage of the workpiece placement position 200.

[0044] Figure 6 In the state diagram a, the manipulator grabs the bracket 92 and reaches just above the side block 53. At this time, the side block 53 is in a relatively high floating position, and the rotating base 2 is in an upright state; Figure 6 In the state diagram b, when the manipulator drives the bracket 92 to move downward, the bracket 92 presses down the side block 53, causing the side block 53 to swing downward and sink to the sunken position; Figure 6 In the c state diagram, the manipulator drives the bracket 92 to move horizontally along the length direction so that the connecting portion 921 of the bracket 92 can reach the bottom of the heat sink 91, and since the downward pressure of the bracket 92 disappears, the side stop 53 returns to the floating position under the restoring force of the first elastic member 54 and restricts the bracket 92 from the length direction.

[0045] See also Figures 2 to 4 When the rotating base 2 is upright, the entrance 201 of the workpiece placement position 200 faces upward, and the workpiece is supported by the bottom of the workpiece placement position 200 and the supporting portion 511; when the rotating base 2 is inverted, the entrance 201 faces downward. Although the surrounding structure of the workpiece placement position 200 itself provides a certain positioning effect, it is not enough to resist the force in the subsequent screw driving process. For this reason, the utility model also provides a support mechanism 3.

[0046] Recombination Figures 7 to 9 The support mechanism 3 is rotatably mounted on the fixing seat 1 around the second axis 300. The support mechanism 3 includes a supporting portion 31 and a forced portion 32. The forced portion 32 and the support portion 31 are respectively arranged on opposite sides of the second axis 300. Figure 2As shown, the forced part 32 is exposed to the reversible carrier; as Figure 3 As shown, the support part 31 is located below the rotating seat 2.

[0047] The rotation of the support mechanism 3 around the second axis 300 can make the support part 31 move between a lower low position 308 and a higher high position 309, Figure 3 and Figure 8 As shown, the support part 31 is in the low position 308, Figure 9 As shown, the support part 31 is in the high position 309.

[0048] The support mechanism 3 further comprises a second elastic member 33 abutting between the lower surface of the forced part 32 and one of the upper sides of the fixed seat 1, the second elastic member 33 is a compression spring, under the restoring force of the second elastic member 33, the support part 31 will be kept in the low position 308; when the driving device presses down the forced part 32, the support mechanism 3 can be swung and the support part 31 can be lifted and kept in the high position 309.

[0049] Continuing to refer to Figures 7 to 9 The support part 31 comprises a first positioning pin 311 and a second positioning pin 312; in the axial projection of the second axis 300, the first positioning pin 311 is farther away from the second axis 300 than the second positioning pin 312; the first positioning pin 311 is shorter than the second positioning pin 312. In this embodiment, as the support points, the top of the first positioning pin 311 and the top of the second positioning pin 312 are both set to be sharp convex to reduce the contact area with the workpiece.

[0050] Referring to Figure 8 , Figure 8 The minimum circumscribed circle 20 of the rotating seat 2 is made in When the support part 31 is in the low position 308, the first positioning pin 311 and the second positioning pin 312 are both located outside the minimum circumscribed circle 20, so the first positioning pin 311 and the second positioning pin 312 will not interfere with the rotating action of the rotating seat 2 around the first axis 100.

[0051] Referring to Figure 9 When the rotating seat 2 is rotated 180 degrees around the first axis 100 from the upright state to the inverted state, and the support part 31 is in the high position 309, the side of the rotating seat 2 and the entrance 201 are downward, the support part 31 is opposite to the workpiece placement position 200 and the workpiece in the workpiece placement position 200 through the entrance 201, the support points of the two first positioning pins 311 and the support points of the two second positioning pins 312 are all in the same approximately horizontal plane, the first positioning pin 311 and the second positioning pin 312 support the surface 911 of the heat sink from below, thereby providing reliable support for the subsequent screwing process, and then the screwing machine can complete the screwing process of the bracket 92 and the heat sink 91 from the back surface 912 side from top to bottom through the machining communication port 210.

[0052] In addition, referring to Figure 2 and Figure 3 Two sets of buckling mechanisms 4 are arranged on the fixed seat 1, and a first buckling mechanism 29 is arranged on the rotating seat 2. The first buckling mechanism 29 comprises a rod, and the first buckling mechanism 29 extends from one side of the rotating seat 2, and the rod moves in a plane perpendicular to the first axis 100 when the rotating seat 2 rotates. In addition, the rod serves as a driven part when the rotating drive device drives the rotating seat 2 to rotate around the first axis 100, that is, the drive device can drive the rotating seat 2 to rotate by pushing the rod.

[0053] The buckling mechanism 4 comprises a connecting block 41, a second buckling mechanism 42, a third elastic member 43, and a sliding rail assembly 44. The connecting block 41 is fixed on the fixed seat 1, the second buckling mechanism 42 is movably connected with the fixed seat 1 along the length direction through the sliding rail assembly 44, and the connecting block 41 and the second buckling mechanism 42 are arranged along the length direction. The third elastic member 43 is a compression spring, and the third elastic member 43 abuts between the connecting block 41 and the second buckling mechanism 42 along the length direction, so that the second buckling mechanism 42 is arranged to float along the length direction, that is, the axial direction of the first axis 100, under the restoring force of the third elastic member 43.

[0054] Referring to Figure 3 Along the axial direction of the first axis 100, that is, the floating direction of the second buckling mechanism 42, the front end of the second buckling mechanism 42 is provided with a protruding tooth 421 and a recess 422 arranged in sequence from top to bottom. In fact, the protruding tooth 421 and the recess 422 are also arranged in sequence along the circumferential direction of the first axis 100. On the circumferential direction of the first axis 100, the front and back sides of the protruding tooth 421, that is, the upper and lower sides of the protruding tooth 421, are provided with guide surfaces 4211.

[0055] Along the width direction of the reversible carrier, the two sets of buckling mechanisms 4 are arranged on the first side and the second side of the first axis 100, respectively. When the rotating seat 2 is in the normal state, the rod of the first buckling mechanism 29 buckles with the recess 422 of the second buckling mechanism 42 on the first side, and when the rotating seat 2 is in the inverted state, the rod of the first buckling mechanism 29 buckles with the recess 422 of the second buckling mechanism 42 on the second side. During the rotation of the rotating seat 2, the rod abuts against the guide surface 4211 on the protruding tooth 421 to force the second buckling mechanism 42 to float, and when the rotating seat 2 is in the normal state or the inverted state, the rod is stable in the recess 422 to keep buckling with each other. In this way, the arrangement of the first buckling mechanism 29 and the second buckling mechanism 42 enables the rotating seat 2 to be stable in the current state, improves the reliability of the carrier, and ensures the smooth automatic processing.

[0056] In other embodiments, the support mechanism is arranged in a vertical translation manner.

[0057] In other embodiments, the side stop mechanism is arranged in a vertical translation manner.

[0058] In other embodiments, the second axis is horizontal and / or the third axis is non-parallel to the first axis.

[0059] In other embodiments, the third axis is horizontal and / or the third axis is non-perpendicular to the first axis.

[0060] In other embodiments, the second fastening structure is provided only on the first side of the first axis or only on the second side of the first axis.

[0061] In other embodiments, the first fastening structure and the second fastening structure are provided in a concave-convex fitting structure as is conventional in the art.

[0062] Finally, it should be emphasized that the above description is only preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A reversible carrier comprising a workpiece placement site; characterized in that: the reversible carrier comprises a fixed base and a rotating base, the rotating base is rotatably connected to the fixed base around a first axis, and the workpiece placement site is arranged on the rotating base; an entrance of the workpiece placement site is arranged on a surface side of the rotating base, the rotating base is further provided with a machining communication port, the machining communication port is communicated between a bottom of the workpiece placement site and a back side of the rotating base, and the back side is arranged opposite to the surface side; the reversible carrier further comprises a supporting mechanism, the supporting mechanism is movably connected to the fixed base, the supporting mechanism comprises a supporting part, the supporting part is located below the rotating base, and the supporting part is movable between a low position and a high position; the supporting mechanism in the low position avoids the rotating base; when the rotating base is in an inverted state and when the supporting part is in the high position, the surface side faces downward, and the supporting part is opposite to the workpiece placement site through the entrance. 2.The reversible carrier according to claim 1, characterized in that: the reversible carrier comprises a first buckling structure and a second buckling structure, the first buckling structure is arranged on the rotating base, and the second buckling structure is movably arranged on the fixed base; one of the second buckling structures is arranged on a first side of the first axis, the first buckling structure is buckled with the second buckling structure when the rotating base is in a normal state; and / or, another of the second buckling structures is arranged on a second side of the first axis, the first buckling structure is buckled with the second buckling structure when the rotating base is in the inverted state. 3.The reversible carrier according to claim 2, characterized in that: the first buckling structure is a rod, and the rod moves in a plane perpendicular to the first axis when the rotating base rotates; the rod serves as a driven part when the rotating base rotates around the first axis driven by a rotating driving device. 4.The reversible carrier according to claim 3, characterized in that: the second buckling structure is along an axial direction of the first axis, the second buckling structure comprises a protruding tooth and a recessed position arranged in sequence in a circumferential direction of the first axis; front and back sides of the protruding tooth are both provided with guide surfaces in the circumferential direction of the first axis; the rod and the protruding tooth abut to force the second buckling structure to float during the rotation of the rotating base; the rod is buckled with the recessed position when the rotating base is in the normal state or the inverted state. 5.The reversible carrier according to claim 2, characterized in that: the reversible carrier further comprises a side blocking mechanism, and the side blocking mechanism comprises a side blocking part; the side blocking mechanism is movably arranged on the rotating base, and the side blocking part blocks the workpiece placement site from an axial direction of the first axis; the side blocking mechanism can sink away from a current position and make the side blocking part unblock the workpiece placement site after being forced. 6.The reversible carrier according to claim 5, characterized in that: the side blocking mechanism is rotatably arranged around a third axis, and the side blocking mechanism comprises a first elastic member. ​ The side blocking mechanism comprises a first swing arm portion and a second swing arm portion, the first swing arm portion and the second swing arm portion are respectively arranged on opposite sides of the third axis, the side blocking portion is arranged on the first swing arm portion, and the first elastic member is abutted between the second swing arm portion and the rotating seat.

7. The reversible carrier according to claim 6, wherein: When the rotating seat is in the upright state, at least a part of the first swing arm portion, the third axis and the second swing arm portion are located below the workpiece placing position.

8. The reversible carrier according to claim 6, wherein: A supporting portion is arranged on the first swing arm portion, the side blocking portion is farther away from the third axis than the supporting portion, and the machining communication opening is formed between the supporting portion and the bottom of the workpiece placing position.

9. The reversible carrier according to any one of claims 1 to 8, wherein: The supporting mechanism is rotatably arranged around a second axis, the second axis is parallel to the first axis, and the supporting portion is located on the circumferential position of the second axis; The supporting mechanism further comprises an exposed forced portion, and the forced portion and the supporting portion are respectively arranged on opposite sides of the second axis.

10. The reversible carrier according to claim 9, wherein: The supporting portion comprises a first positioning pin and a second positioning pin; In the axial projection of the second axis, the first positioning pin is farther away from the second axis than the second positioning pin; The first positioning pin is shorter than the second positioning pin.

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