Part transferring mechanism

Abstract

The invention relates to a part transferring mechanism which comprises a mounting seat capable of moving in the vertical direction and the first horizontal direction; the clamping mechanism is connected to the mounting base and comprises two connecting pieces, the two connecting pieces can move close to or away from each other in the second direction, and the second direction is horizontal; the driving piece is connected with the two connecting pieces and the mounting base, and the driving piece is used for driving the two connecting pieces to move close to or away from each other in the second direction; the two clamping pieces are connected to the two connecting pieces respectively, the clamping pieces can rotate around a first axis parallel to the second direction relative to the connecting pieces, and the two clamping pieces are suitable for clamping the tested part with the axis perpendicular to the second direction through the two clamping pieces when the two connecting pieces get close to each other and limiting relative movement of the tested part and the clamping pieces. The part transferring and posture adjusting functions are achieved, and the cost can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automation, and in particular to a parts transfer mechanism. Background Art

[0002] Various shaft parts are used in mechanical transmission systems. According to the transmission and connection requirements, some shaft parts are designed with splines, inner holes, threads, steps and other structures at the same time. For parts with such complex structures, the accuracy of each structure must be guaranteed to ensure the assembly accuracy of the parts. Therefore, it is necessary to test the accuracy of each structure to screen out unqualified products.

[0003] For the inspection of the above-mentioned shaft parts, the inspection process corresponding to each structural design is usually carried out. In order to realize the automation of the entire inspection process, it is necessary to realize the automation of the transfer of parts between various processes. However, due to the different inspection items of the parts in each inspection process, the posture of the parts (horizontal or vertical axis) needs to be adjusted accordingly. The traditional translation and lifting transfer mechanism cannot adjust the posture of the parts. Therefore, multi-axis robots are usually selected to complete the transfer of parts. They can not only complete the adjustment of the posture of the parts, but also transfer the parts. However, the robot has the problem of high cost and poor economic efficiency. Summary of the invention

[0004] Based on the above description, the present invention provides a part transfer mechanism to solve the problem of high cost in completing part transfer and posture adjustment work by robots in the related art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: The present application provides a parts transfer mechanism, and the technical solution adopted is as follows: A parts transfer mechanism, comprising: A mounting base movable in a vertical direction and a horizontal first direction; A clamping mechanism connected to the mounting seat, the clamping mechanism comprising: Two connecting members, the two connecting members can move towards or away from each other along a second direction, and the second direction is horizontal; A driving member, which connects the two connecting members and the mounting seat, and is used to drive the two connecting members to move toward or away from each other along the second direction; Two clamping members are respectively connected to the two connecting members, and the clamping members can rotate relative to the connecting members around a first axis parallel to the second direction. They are suitable for clamping the measured part whose axis is perpendicular to the second direction through the two clamping members when the two connecting members are close to each other, and limiting the relative movement between the measured part and the clamping members.

[0006] Preferably, a limiting structure is provided between the clamping member and the connecting member, and the limiting structure is used to limit the clamping member from continuing to rotate along a rotation direction when the clamping member clamps the measured part and rotates along the rotation direction until the axis of the measured part is horizontal or vertical.

[0007] Preferably, the limiting structure includes: A first position-limiting member connected to the clamping member and located between the clamping member and the connecting member, wherein the first position-limiting member rotates with the clamping member and can move relative to the clamping member along a first axis direction; A second limiting member connected to the connecting member and located between the connecting member and the clamping member, the second limiting member can move relative to the connecting member along the first axis, and the second limiting member is provided with a limiting hole for the first limiting member to be inserted, the first limiting member can rotate with the clamping member to be aligned with the limiting hole, and the first limiting member is restricted by the second limiting member from rotating around the first axis when inserted into the limiting hole; a first elastic member, which is disposed between the second limiting member and the connecting member, and overcomes the elastic force of the first elastic member when the second limiting member moves away from the clamping member along the first axis direction; Wherein, the first limit member includes a first position and a second position, the first position is close to the clamping member, the second limit member includes a third position and a fourth position, the third position is close to the clamping member, when the first limit member is in the first position, the second limit member is located outside the motion trajectory of the first limit member rotating with the clamping member, when the first limit member is in the second position, the second limit member located at the third position is on the motion trajectory of the first limit member rotating with the clamping member, and the second limit member located at the fourth position is outside the motion trajectory of the first limit member rotating with the clamping member, suitable for when the first limit member is in the second position and rotates along a rotation direction with the clamping member, the second limit member is driven by the first limit member to move from the third position to the fourth position.

[0008] Preferably, a second elastic member is provided between the first limiting member and the clamping member, and the first limiting member overcomes the elastic force of the second elastic member when moving from the first position to the second position, and is suitable for driving the first limiting member to move from the first position to the second position through the measured part when the two clamping members are close to each other to clamp the measured part.

[0009] Preferably, the first limit member is connected to the clamping member through a connecting shaft, the connecting shaft is parallel to the first axis, one end of the connecting shaft passes through the clamping member and extends between the two clamping members, and the connecting shaft can move axially relative to the clamping member. When the two clamping members approach each other to clamp the measured part, the connecting shaft is abutted against the measured part and is driven to move by the measured part.

[0010] Preferably, the clamping mechanisms are provided in plurality, and the plurality of clamping mechanisms are arranged at intervals along the first direction.

[0011] Preferably, in at least one of the clamping mechanisms, a motor is provided on the connecting member, the clamping member is connected to the motor via a transmission structure, and the motor drives the clamping member to rotate via the transmission structure.

[0012] Preferably, at least one of the clamping mechanisms is configured as follows: when the two clamping members clamp the part to be measured, the weights of the parts of the part to be measured located on both sides of the first axis in its axial direction are different, which is suitable for causing the part to be measured and the clamping members to rotate around the first axis under the action of the gravity of the part to be measured to a posture in which the axis of the part to be measured is vertical.

[0013] Preferably, a positioning groove is provided on one side of the clamping member for contacting the measured part, and the positioning groove is in the shape of an arc with an axis perpendicular to the first axis. The parts of the clamping member located on both sides of the first axis in the circumferential direction of the positioning groove have different weights, which are suitable for the clamping member to be rotated to be level with the axis of the positioning groove under the action of its gravity.

[0014] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects: 1. The present application sets a clamping mechanism, and the two connecting parts of the clamping mechanism are brought close to each other, so that the two clamping parts cooperate to clamp the part to be measured, thereby achieving the purpose of grasping the part to be measured; by moving the mounting seat along the vertical direction and the first direction, multiple clamping mechanisms can be driven to move, thereby achieving the purpose of transferring the part. And by setting the clamping member to rotate around the first axis, after the two clamping members clamp the part to be measured, the axis of the clamped part to be measured can be adjusted to a horizontal or vertical state by rotating the clamping member, thereby achieving the function of adjusting the posture of the part to be measured, so as to achieve the purpose of adjusting the posture of the part while transferring the part. Compared with the robot, the drive mechanism that rotates the clamping member is more convenient and has lower cost, and can meet the needs of part posture adjustment. Therefore, the present application can realize the functions of part transfer and posture adjustment, and can reduce the cost of the clamping mechanism.

[0015] 2. The present application sets a limit structure so that when the clamping member clamps the measured part and rotates along a rotation direction until the axis of the measured part is horizontal or vertical, the clamping member is restricted from continuing to rotate along the rotation direction. When the posture of the part is adjusted to the horizontal or vertical axis, the part can be prevented from rotating too much, thereby achieving precise positioning of the horizontal or vertical posture of the part axis, so that the transferred part can maintain a horizontal or vertical posture when transferred to the next process.

[0016] 3. The present application realizes the positioning of the part by the cooperation between the second limit member and the first limit member, the movement of the first limit member is realized by the cooperation between the second elastic member and the measured part, and the movement of the second limit member is realized by the cooperation between the first elastic member and the first limit member. When the clamping member clamps the part, the part causes the first limit member to overcome the elastic force of the second elastic member and move to the second position. At this time, the first limit member rotates with the clamping member, and drives the second limit member to move to the fourth position when it rotates to abut against the second limit member, until the first limit member is aligned with the limiting hole, the second limit member is reset to the third position under the action of the elastic force of the first elastic member, so that the first limit member is inserted into the limiting groove, thereby limiting the rotation of the first limit member, that is, limiting the rotation of the clamping member and the measured part, so that the part remains in the set posture to transfer to the next process, thereby improving the accuracy of the part posture. When the part is transferred to the next station and released, the first limiter is reset to the first position under the elastic force of the second elastic member, and the first limiter is disengaged from the limiter hole, and the first limiter and the clamping member can rotate freely, so that the clamping member is reset to continue to grab the part in the previous station. The whole structure is simple and effective, without the help of sensors and the like for control, and the cost is low.

[0017] 4. The present application can transfer multiple parts to be tested from the previous station to the next station at the same time by setting up multiple clamping mechanisms, thereby improving efficiency and reducing the layout of the translation and lifting systems that drive the movement of the mounting seat to reduce costs. In addition, according to the posture of the parts in two adjacent inspection stations, for situations where the orientation of the parts needs to be changed (for example, the axis is horizontal and the orientations are different, or the axis is vertical and the orientations are different), or the part is adjusted from the vertical axis to the horizontal axis, the clamping mechanism is configured to drive the clamping member to rotate through a motor in cooperation with the transmission structure, and the positioning structure can be used to achieve precise adjustment of the part posture; and for situations where the part is adjusted from the horizontal axis to the vertical axis, the position of the clamping member to clamp the part to be tested can be set to adjust the posture by utilizing the free rotation of the gravity of the part to be tested, which can further reduce costs. The present application can complete the transfer of multiple parts and the adjustment of their respective postures by using the clamping mechanism in cooperation with conventional translation and lifting drive mechanisms, which can effectively reduce costs and ensure the efficiency of batch multi-parameter part detection. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 A schematic diagram of the structure of a parts transfer mechanism provided by an embodiment of the present invention; Figure 2A schematic diagram of the structure of a clamping mechanism in a part transfer mechanism provided by an embodiment of the present invention, wherein the clamping member is driven to rotate by a motor and a transmission structure; Figure 3 A partial structural schematic diagram of a clamping mechanism in a part transfer mechanism provided in an embodiment of the present invention, wherein a counterweight block is connected to the clamping member.

[0018] Description of reference numerals: 1. Mounting seat; 2. Clamping mechanism; 21. Connecting member; 22. Driving member; 23. Clamping member; 231. Positioning groove; 24. Motor; 25. Transmission structure; 251. Driving gear; 252. Driven gear; 253. Transmission shaft; 26. Counterweight; 27. Limiting structure; 271. First limiting member; 272. Second limiting member; 2721. Limiting hole; 273. First elastic member; 274. Second elastic member; 275. Connecting shaft; 3. Slide cylinder; 4. Linear module. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] Reference Figure 1-3 As shown, an embodiment of the present application provides a part transfer mechanism, including a mounting seat 1 and a clamping mechanism 2 connected to the mounting seat 1, the mounting seat 1 can move along a vertical direction and a first horizontal direction, the clamping mechanism 2 is used to clamp the measured part and adjust the posture of the measured part, specifically including two connecting members 21, a driving member 22 and two clamping members 23, the two connecting members 21 can move towards or away from each other along a second direction, and the second direction is horizontal, the driving member 22 connects the two connecting members 21 and the mounting seat 1, the driving member 22 is used to drive the two connecting members 21 to move towards or away from each other along the second direction, the two clamping members 23 are respectively connected to the two connecting members 21, the clamping members 23 can rotate relative to the connecting members 21 around a first axis parallel to the second direction, and are suitable for clamping the measured part whose axis is perpendicular to the second direction through the two clamping members 23 when the two connecting members 21 approach each other, and limiting the relative movement between the measured part and the clamping member 23.

[0025] The clamping mechanism 2 achieves the purpose of grabbing the measured part, and the mounting seat 1 moves along the vertical direction and the first direction to achieve the purpose of transferring the part. Through the setting that the clamping member 23 can rotate around the first axis, after the two clamping members 23 clamp the measured part, the axis of the clamped measured part can be adjusted to a horizontal or vertical state by rotating the clamping member 23, thereby achieving the function of adjusting the posture of the measured part, so as to achieve the purpose of adjusting the posture of the part while transferring the part. Compared with the robot, the drive mechanism that rotates the clamping member 23 is more convenient and has lower cost, and can meet the needs of adjusting the posture of the part.

[0026] Reference Figure 1As shown, the mounting seat 1 provides a mounting platform for the clamping mechanism 2, and the purpose of horizontal and vertical movement of the clamping mechanism 2 is achieved through the vertical movement and horizontal movement of the mounting seat 1, thereby realizing the function of clamping the tested part by the mobile clamping structure. During actual installation, the mounting seat 1 is installed on the detection platform. In this embodiment, the vertical movement of the mounting seat 1 is achieved by the slide cylinder 3, and the horizontal first direction movement is achieved by the linear module 4. Correspondingly, the body of the slide cylinder 3 is fixed to the slide of the linear module 4, and the mounting seat 1 is fixed on the slide of the slide cylinder 3. In some embodiments, the mounting seat 1 can also be moved in a horizontal direction and perpendicular to the first direction as needed to further increase the transfer range of the parts. The specific driving method is designed according to needs, for example, the slide cylinder 3 is also used for driving.

[0027] Reference Figure 2-3 As shown, in this embodiment, the second direction is parallel to the first direction for illustration. The driving member 22 includes parallel clamps, and the two connecting members 21 are respectively connected to the two fingers of the parallel clamps, so that the two fingers of the parallel clamps move closer to or away from each other, thereby achieving the purpose of moving the two connecting members 21 closer to or away from each other. During the design, in order to allow the measured part to have enough posture adjustment space, the connecting member 21 is set to be rod-shaped and one end is connected to the fingers of the parallel clamps, and the clamping member 23 is connected to the other end of the connecting member 21; in this embodiment, the connecting member 21 is illustrated vertically in the length direction, and the clamping member 23 is located at the lower end of the connecting member 21.

[0028] Reference Figure 2-3 As shown, further, in order to enable the clamping member 23 to stably clamp the measured part, a positioning groove 231 is provided on the side of the clamping member 23 that is used to contact the measured part, and the positioning groove 231 is in an arc shape with an axis perpendicular to the first axis. In this embodiment, the clamping member 23 is a clamping block, and the positioning groove 231 is designed according to the outer contour of the measured part, so that when the two clamping members 23 clamp the measured part, the measured part is restricted from moving relative to the clamping member 23 in the positioning groove 231, so as to improve the stability of the measured part when clamping.

[0029] Reference Figure 1 As shown, further, in this embodiment, a plurality of clamping mechanisms 2 are provided, and the plurality of clamping mechanisms 2 are arranged at intervals along the first direction. In actual design, the clamping mechanism 2 is arranged according to the number of detection processes of the detected part, and the stations corresponding to the plurality of detection processes can be arranged at intervals along the first direction, and the number of the clamping mechanisms 2 is the number of detection processes minus one, so that the detected parts in the plurality of detection stations can be clamped and grasped by the plurality of clamping mechanisms 2 at the same time and transferred to the next process at the same time, so as to improve the efficiency of part transfer and the detection efficiency. Moreover, the plurality of clamping mechanisms 2 are moved as a whole by the movement of a mounting seat 1, so that the number of arrangements of the driving mechanism of the mounting seat 1 can be reduced to reduce the cost.

[0030] Reference Figure 1-2 As shown, further, in order to achieve the purpose of adjusting the posture of the measured part to the set posture, in at least one clamping mechanism 2, a motor 24 is provided on the connecting member 21, and the clamping member 23 is connected to the motor 24 through a transmission structure 25, and the motor 24 drives the clamping member 23 to rotate through the transmission structure 25.

[0031] Reference Figure 1-2 As shown, specifically, the transmission structure 25 includes a driving gear 251, a driven gear 252 and a transmission shaft 253, the axis of the transmission shaft 253 coincides with the first axis, the clamping member 23 is fixed to one end of the transmission shaft 253, and the other end of the transmission shaft 253 is connected to the connecting member 21 through a bearing to achieve a rotatable connection between the clamping member 23 and the connecting member 21. The driving gear 251 is coaxially fixed to the output shaft of the motor 24, and the driven gear 252 is coaxially fixed to the transmission shaft 253, so that when the motor 24 is pneumatic, the driving gear 251 and the driven gear 252 cooperate to drive the transmission shaft 253 to rotate, thereby achieving the purpose of driving the clamping member 23 to rotate. When the clamping member 23 clamps the measured part, the motor 24 drives the clamping member 23 to rotate to adjust the posture of the measured part.

[0032] Reference Figure 1 and Figure 3 As shown, further, at least one clamping mechanism 2 is configured as follows: when two clamping members 23 clamp the measured part, the weights of the parts of the measured part located on both sides of the first axis in the axial direction are different, which is suitable for rotating the measured part and the clamping member 23 around the first axis under the action of the gravity of the measured part to a posture in which the axis of the measured part is vertical.

[0033] Reference Figure 3 As shown, specifically, the clamping member 23 is configured to have different weights on both sides of the first axis in the circumferential direction of the positioning groove 231, and is suitable for rotating the clamping member 23 to the horizontal axis of the positioning groove 231 under the action of gravity. In this embodiment, the clamping member 23 is provided with a counterweight block 26 on one side of the first axis in the circumferential direction of the positioning groove 231, so that the clamping member 23 can freely rotate to the horizontal axis of the positioning groove 231 when not clamping the measured part through the counterweight block 26, so as to facilitate the clamping of the measured part with the horizontal axis.

[0034] Through the above arrangement, according to the posture of the part in two adjacent inspection stations, in the case where the orientation of the part needs to be changed (for example, the axis is horizontal and the orientation is different, or the axis is vertical and the orientation is different), or the part is adjusted from the vertical axis to the horizontal axis, the motor 24 can be used in conjunction with the transmission structure 25 to drive the clamping member 23 to rotate to achieve the posture of the part. In the case of adjusting the part from the horizontal axis to the vertical axis, the position of the clamping member 23 to clamp the measured part can be set to adjust the posture by utilizing the free rotation of the measured part due to gravity, which can further reduce the cost. In this embodiment, four clamping mechanisms 2 are provided for illustration, and the clamping members 23 in three of the clamping mechanisms 2 are driven to rotate by the motor 24, and the clamping member 23 in another clamping mechanism 2 is driven to rotate by the counterweight 26.

[0035] Reference Figure 2-3 As shown, further, in order to achieve precise positioning of the part posture adjustment, a limiting structure 27 is provided between the clamping member 23 and the connecting member 21. The limiting structure 27 is used to limit the rotation of the clamping member 23 when the clamping member 23 clamps the measured part and rotates along a rotation direction to the horizontal or vertical posture of the axis of the measured part.

[0036] During the design, the measured part is restricted from rotating when it is rotated to the set axis vertical or axis horizontal posture according to the posture of the measured part in the previous station and the posture of the next station, so that the part can be kept in the set posture and transferred to the next process, thereby ensuring the accuracy of the posture of the measured part so that it can be accurately transferred to the next process.

[0037] Reference Figure 2-3 As shown, specifically, the limiting structure 27 includes a first limiting member 271, a second limiting member 272 and a first elastic member 273. The first limiting member 271 is connected to the clamping member 23 and is located between the clamping member 23 and the connecting member 21. The first limiting member 271 rotates with the clamping member 23 and can move relative to the clamping member 23 along the first axis. The second limiting member 272 is connected to the connecting member 21 and is located between the connecting member 21 and the clamping member 23. The second limiting member 272 can move relative to the connecting member 21 along the first axis, and a limiting hole 2721 is provided on the second limiting member 272 for the first limiting member 271 to be inserted. The first limiting member 271 can rotate with the clamping member 23 until it is aligned with the limiting hole 2721, and when the first limiting member 271 is inserted into the limiting hole 2721, it is restricted by the second limiting member 272 from rotating around the first axis. The first elastic member 273 is disposed between the second limiting member 272 and the connecting member 21 . When the second limiting member 272 moves away from the clamping member 23 along the first axis direction, the first elastic member 273 overcomes the elastic force of the first elastic member 273 .

[0038] Among them, the first limiting member 271 includes a first position and a second position, the first position is close to the clamping member 23, the second limiting member 272 includes a third position and a fourth position, the third position is close to the clamping member 23, when the first limiting member 271 is in the first position, the second limiting member 272 is located outside the motion trajectory of the first limiting member 271 rotating with the clamping member 23, when the first limiting member 271 is in the second position, the second limiting member 272 located at the third position is on the motion trajectory of the first limiting member 271 rotating with the clamping member 23, and the second limiting member 272 located at the fourth position is outside the motion trajectory of the first limiting member 271 rotating with the clamping member 23, suitable for when the first limiting member 271 is in the second position and rotates along a rotation direction with the clamping member 23, the second limiting member 272 is driven by the first limiting member 271 to move from the third position to the fourth position.

[0039] Specifically, in order to achieve the purpose of driving the second limiting member 272 to move from the third position to the fourth position through the first limiting member 271, the side of the second limiting member 272 that abuts against the first limiting member 271 is set as an inclined surface. When the first limiting member 271 rotates to abut against the second limiting member 272, the first limiting member 271 abuts against the inclined surface of the second limiting member 272, and the second limiting member 272 moves to the fourth position under the action of the inclined surface. When the first limiting member 271 moves to align with the limiting hole 2721, the second limiting member 272 is reset to the third position under the elastic force of the first elastic member 273, that is, the first limiting member 271 is inserted into the limiting hole 2721, so that the first limiting member 271 and the clamping member 23 are restricted from rotating through the second limiting member 272.

[0040] Reference Figure 2-3 As shown, further, a second elastic member 274 is provided between the first limit member 271 and the clamping member 23. When the first limit member 271 moves from the first position to the second position, the elastic force of the second elastic member 274 is overcome, and it is suitable for driving the first limit member 271 to move from the first position to the second position through the measured part when the two clamping members 23 are close to each other to clamp the measured part.

[0041] Reference Figure 2-3 As shown, in this embodiment, the first position-limiting member 271 is connected to the clamping member 23 through a connecting shaft 275, the connecting shaft 275 is parallel to the first axis, one end of the connecting shaft 275 passes through the clamping member 23 and extends between the two clamping members 23, and the connecting shaft 275 can move relative to the clamping member 23 along the axial direction. When the two clamping members 23 are close to each other to clamp the measured part, the connecting shaft 275 abuts against the measured part and is driven to move by the measured part. In the design, after the measured part is clamped by the clamping member 23, the first position-limiting member 271 moves to the second position with the connecting shaft 275, and after the measured part is put down, the first position-limiting member 271 is reset to the first position under the action of the second elastic member 274.

[0042] Through the above arrangement, when the clamping member 23 clamps the part, the part causes the first limit member 271 to overcome the elastic force of the second elastic member 274 and move to the second position. At this time, the first limit member 271 rotates with the clamping member 23, and when it rotates to abut against the second limit member 272, it drives the second limit member 272 to overcome the elastic force of the first elastic member 273 and move to the fourth position, until the first limit member 271 is aligned with the limiting hole 2721, and the second limit member 272 is reset to the third position under the elastic force of the first elastic member 273, so that the first limit member 271 is inserted into the limiting groove, thereby limiting the rotation of the first limit member 271, that is, limiting the rotation of the clamping member 23 and the measured part, so that the part remains in the set posture and transfers to the next process, thereby improving the accuracy of the part posture. When the part is transferred to the next station and released, the first stopper 271 is reset to the first position under the elastic force of the second elastic member 274. At this time, the first stopper 271 is separated from the stopper hole 2721, and the first stopper 271 and the clamping member 23 can rotate freely, so that the clamping member 23 is reset to continue to grab the part in the previous station. The whole structure is simple and effective, without the help of sensors and the like for control, and the cost is low.

[0043] In this embodiment, the first limiter 271 is a limiter rod and one end of the limiter rod is fixed to the connecting shaft 275, while the second limiter 272 is a limiter rod whose length direction is parallel to the first axis. The limiter rod passes through the connecting member 21 and can move relative to the connecting member 21 along the length direction. The first elastic member 273 and the second elastic member 274 are both tension springs. The first elastic member 273 is located on the side of the connecting member 21 away from the clamping member 23, and the second elastic member 274 is located between the connecting member 21 and the clamping member 23. The first elastic member 273 is sleeved outside the limiter rod and the two ends are respectively fixed to the limiter rod and the connecting member 21. The second elastic member 274 is sleeved outside the connecting shaft 275 and the two ends are respectively fixed to the first limiter 271 and the clamping member 23. The position of the second limiter 272 is set according to the final posture of the clamping mechanism 2 designed to clamp the measured part.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A parts transfer mechanism, characterized in that: include: A mounting base (1) which is movable in a vertical direction and a first horizontal direction; A clamping mechanism (2) connected to the mounting seat (1), the clamping mechanism (2) comprising: Two connecting members (21), the two connecting members (21) can move towards or away from each other along a second direction, and the second direction is horizontal; a driving member (22) connecting the two connecting members (21) and the mounting seat (1), the driving member (22) being used to drive the two connecting members (21) to move toward or away from each other along a second direction; Two clamping members (23) are respectively connected to the two connecting members (21); the clamping members (23) can rotate relative to the connecting members (21) around a first axis parallel to the second direction, and are suitable for clamping a measured part whose axis is perpendicular to the second direction through the two clamping members (23) when the two connecting members (21) are close to each other, and limiting the relative movement between the measured part and the clamping members (23).

2. The parts transfer mechanism according to claim 1, characterized in that: A limiting structure (27) is provided between the clamping member (23) and the connecting member (21), and the limiting structure (27) is used to limit the rotation of the clamping member (23) when the clamping member (23) clamps the measured part and rotates along a rotation direction until the axis of the measured part is horizontal or vertical.

3. The parts transfer mechanism according to claim 2, characterized in that: The limiting structure (27) comprises: a first limiting member (271) connected to the clamping member (23) and located between the clamping member (23) and the connecting member (21); the first limiting member (271) rotates with the clamping member (23) and can move relative to the clamping member (23) along a first axis direction; a second limiting member (272) connected to the connecting member (21) and located between the connecting member (21) and the clamping member (23); the second limiting member (272) can move relative to the connecting member (21) along the first axis direction; the second limiting member (272) is provided with a limiting hole (2721) for the first limiting member (271) to be inserted; the first limiting member (271) can rotate with the clamping member (23) to be aligned with the limiting hole (2721); and when the first limiting member (271) is inserted into the limiting hole (2721), it is restricted by the second limiting member (272) from rotating around the first axis; a first elastic member (273) disposed between the second limiting member (272) and the connecting member (21), wherein the second limiting member (272) overcomes the elastic force of the first elastic member (273) when moving away from the clamping member (23) along the first axis direction; Wherein, the first limiting member (271) includes a first position and a second position, the first position is close to the clamping member (23), the second limiting member (272) includes a third position and a fourth position, the third position is close to the clamping member (23), when the first limiting member (271) is in the first position, the second limiting member (272) is located outside the motion trajectory of the first limiting member (271) rotating with the clamping member (23), and when the first limiting member (271) is in the second position, the second limiting member (272) is located outside the motion trajectory of the first limiting member (271) rotating with the clamping member (23), The second limiting member (272) is on the movement trajectory of the first limiting member (271) rotating with the clamping member (23), and the second limiting member (272) located at the fourth position is outside the movement trajectory of the first limiting member (271) rotating with the clamping member (23), suitable for driving the second limiting member (272) to move from the third position to the fourth position through the first limiting member (271) when the first limiting member (271) is located at the second position and rotates along a rotation direction with the clamping member (23).

4. The parts transfer mechanism according to claim 3, characterized in that: A second elastic member (274) is provided between the first limiting member (271) and the clamping member (23); the first limiting member (271) overcomes the elastic force of the second elastic member (274) when moving from the first position to the second position; and is suitable for driving the first limiting member (271) to move from the first position to the second position through the measured part when the two clamping members (23) are close to each other to clamp the measured part.

5. The parts transfer mechanism according to claim 4, characterized in that: The first limiting member (271) is connected to the clamping member (23) via a connecting shaft (275), the connecting shaft (275) is parallel to the first axis, one end of the connecting shaft (275) passes through the clamping member (23) and extends between the two clamping members (23), and the connecting shaft (275) can move axially relative to the clamping member (23), and when the two clamping members (23) are close to each other to clamp the measured part, the connecting shaft (275) abuts against the measured part and is driven to move by the measured part.

6. The parts transfer mechanism according to claim 1, characterized in that: A plurality of the clamping mechanisms (2) are provided, and the plurality of the clamping mechanisms (2) are arranged at intervals along the first direction.

7. The parts transfer mechanism according to claim 6, characterized in that: In at least one of the clamping mechanisms (2), a motor (24) is provided on the connecting member (21), the clamping member (23) is connected to the motor (24) via a transmission structure (25), and the motor (24) drives the clamping member (23) to rotate via the transmission structure (25).

8. The parts transfer mechanism according to claim 6 or 7, characterized in that: At least one of the clamping mechanisms (2) is configured such that when the two clamping members (23) clamp the part to be measured, the weights of the parts of the part to be measured located on both sides of the first axis in the axial direction are different, so that the part to be measured and the clamping member (23) are suitable for rotating around the first axis under the action of the gravity of the part to be measured to a posture in which the axis of the part to be measured is vertical.

9. The parts transfer mechanism according to claim 8, characterized in that: A positioning groove (231) is provided on one side of the clamping member (23) for contacting the measured part. The positioning groove (231) is in the shape of an arc with an axis perpendicular to the first axis. Parts of the clamping member (23) located on both sides of the first axis in the circumferential direction of the positioning groove (231) have different weights, and are suitable for rotating the clamping member (23) to the level of the axis of the positioning groove (231) under the action of gravity.

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