A component transfer mechanism

Abstract

The application relates to a part transfer mechanism, which comprises a mounting base, a clamping mechanism connected to the mounting base, two connecting members, a driving member, and two clamping members. The mounting base can move in a vertical direction and a horizontal first direction. The two connecting members can move towards or away from each other in a second direction, and the second direction is horizontal. The driving member is connected to the two connecting members and the mounting base, and is used for driving the two connecting members to move towards or away from each other in the second direction. The two clamping members are respectively connected to the two connecting members, and can rotate around a first axis parallel to the second direction relative to the connecting members. When the two connecting members move towards each other, the two clamping members are adapted to clamp a measured part with an axis perpendicular to the second direction, and limit the relative movement between the measured part and the clamping members. The application realizes the functions of part transfer and posture adjustment, and can reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of automation technology, and more specifically to a parts transfer mechanism. Background Technology

[0002] Various shaft parts are used in mechanical transmission systems. Depending on the transmission and connection requirements, some shaft parts may have structures such as splines, internal holes, threads, and steps designed simultaneously. For such complex structure parts, it is necessary to ensure the accuracy of each structure to ensure the assembly accuracy of the parts. Therefore, it is necessary to inspect the accuracy of each structure to screen out defective products.

[0003] For the inspection of the aforementioned shaft-type parts, inspection is typically carried out for each structural design-specific inspection process. To automate the entire inspection process, the transfer of parts between these processes needs to be automated. However, since the inspection items differ in each process, the part's orientation (horizontal or vertical axis) needs to be adjusted accordingly. Traditional translation and lifting transfer mechanisms cannot adjust the part's orientation. Therefore, multi-axis robots are usually chosen to perform the part transfer, as they can both adjust the part's orientation and transfer it. However, robots are costly and have poor economic efficiency. Summary of the Invention

[0004] Based on the above description, the present invention provides a parts transfer mechanism to solve the problem of high cost in related technologies where parts transfer and attitude adjustment are performed by robots.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] This application provides a parts transfer mechanism, the technical solution of which is as follows:

[0007] A parts transfer mechanism, comprising:

[0008] The mounting base is movable in a vertical and a first horizontal direction;

[0009] A clamping mechanism connected to the mounting base, the clamping mechanism comprising:

[0010] Two connectors, which are movable toward or away from each other along a second direction, and the second direction is horizontal;

[0011] A driving element that connects the two connecting elements and the mounting base, the driving element being used to drive the two connecting elements to move closer to or further away from each other along a second direction;

[0012] Two clamping members are respectively connected to the two connecting members. The clamping members can rotate relative to the connecting members about a first axis parallel to the second direction. They are suitable for clamping the test part whose axis is perpendicular to the second direction by the two clamping members when the two connecting members are close to each other, and restricting the relative movement of the test part and the clamping members.

[0013] Preferably, a limiting structure is provided between the clamping member and the connecting member. The limiting structure is used to restrict the clamping member from continuing to rotate in the rotation direction when the clamping member clamps the part to be measured and rotates in a rotation direction to a horizontal or vertical position of the axis of the part to be measured.

[0014] Preferably, the limiting structure includes:

[0015] A first limiting member is connected to the clamping member and located between the clamping member and the connecting member. The first limiting member rotates with the clamping member and can move relative to the clamping member along the first axis direction.

[0016] The second limiting member is 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 direction, 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 align with the limiting hole, and when the first limiting member is inserted into the limiting hole, it is restricted by the second limiting member to rotate around the first axis.

[0017] A first elastic element is disposed between the second limiting element and the connecting element. When the second limiting element moves away from the clamping element along the first axis, it overcomes the elastic force of the first elastic element.

[0018] The first limiting member includes a first position and a second position, with the first position close to the clamping member. The second limiting member includes a third position and a fourth position, with the third position close to the clamping member. When the first limiting member is in the first position, the second limiting member is located outside the movement trajectory of the first limiting member as it rotates with the clamping member. When the first limiting member is in the second position, the second limiting member in the third position is on the movement trajectory of the first limiting member as it rotates with the clamping member, and the second limiting member in the fourth position is outside the movement trajectory of the first limiting member as it rotates with the clamping member. This configuration is suitable for driving the second limiting member from the third position to the fourth position when the first limiting member is in the second position and rotates with the clamping member in one rotation direction.

[0019] Preferably, a second elastic element is provided between the first limiting member and the clamping member. When the first limiting member moves from the first position to the second position, it overcomes the elastic force of the second elastic element. It is also suitable for the first limiting member to move from the first position to the second position by being driven by the part being tested when the two clamping members are close to each other and clamping the part being tested.

[0020] Preferably, the first limiting member is connected to the clamping member via 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. The connecting shaft can move axially relative to the clamping member. When the two clamping members approach each other to clamp the part to be tested, the connecting shaft abuts against the part to be tested and is driven to move by the part to be tested.

[0021] Preferably, there are multiple clamping mechanisms, and the multiple clamping mechanisms are spaced apart along the first direction.

[0022] Preferably, in at least one of the clamping mechanisms, the connecting member is provided with a motor, the clamping member is connected to the motor through a transmission structure, and the motor drives the clamping member to rotate through the transmission structure.

[0023] Preferably, at least one of the clamping mechanisms is configured such that when the two clamping members clamp the part to be tested, the parts of the part to be tested located on both sides of the first axis in its axial direction have different weights, which is suitable for rotating the part to be tested and the clamping members around the first axis to a position where the axis of the part to be tested is vertical under the action of the gravity of the part to be tested.

[0024] Preferably, the clamping member has a positioning groove on the side that contacts the part being measured. The positioning groove is an arc shape with its axis perpendicular to the first axis. The clamping member has different weights on both sides of the first axis in the circumferential direction of the positioning groove, which is suitable for rotating the clamping member to the horizontal position of the positioning groove axis under the action of gravity.

[0025] Compared with the prior art, the technical solution of this application has at least the following beneficial technical effects:

[0026] 1. This application employs a clamping mechanism. Two connecting parts of the clamping mechanism move close together to grip the part being measured, achieving the purpose of grasping the part. The mounting base moves vertically and in a first direction, driving multiple clamping mechanisms to move, thereby transferring the part. Furthermore, the clamping parts can rotate around a first axis. After the two clamping parts grip the part, rotating them adjusts the axis of the gripped part to a horizontal or vertical position, thus adjusting the part's posture and achieving the goal of adjusting the part's posture while transferring it. Compared to a robot, the drive mechanism for rotating the clamping parts is more convenient and less costly, meeting the requirements for part posture adjustment. Therefore, this application can achieve both part transfer and posture adjustment functions while reducing the cost of the clamping mechanism.

[0027] 2. This application sets a limiting structure to restrict the clamping member from continuing to rotate in the same direction when the clamping member holds the part to be measured and rotates it in one direction until the axis of the part to be measured is horizontal or vertical. This can prevent the part from rotating too much when the part is adjusted to be horizontal or vertical, and achieve precise positioning of the part's axis to be horizontal or vertical, so that the transferred part is transferred to the next process while maintaining a horizontal or vertical posture.

[0028] 3. This application achieves part positioning through the cooperation of the second limiting member and the first limiting member. The movement of the first limiting member is achieved through the cooperation of the second elastic member and the measured part. The movement of the second limiting member is achieved through the cooperation of the first elastic member and the first limiting member. When the clamping member clamps the part, the part causes the first limiting member to move to the second position against the elastic force of the second elastic member. At this time, the first limiting member rotates with the clamping member and drives the second limiting member to move to the fourth position when it rotates to abut against the second limiting member. When the first limiting member is aligned with the limiting hole, the second limiting member resets to the third position under the elastic force of the first elastic member, so that the first limiting member is inserted into the limiting groove, thereby restricting the rotation of the first limiting member, that is, restricting the rotation of the clamping member and the measured part, so that the part is kept in the set posture and transferred to the next process, improving the accuracy of the part posture. When the part is transferred to the next station and released, the first limiting member returns to its first position under the elastic force of the second elastic member. At this time, the first limiting member disengages from the limiting hole, and the first limiting member and the clamping member can rotate freely, thereby allowing the clamping member to reset and continue to grip the part in the previous station. The entire structure is simple and effective, does not rely on sensors or other control methods, and is low in cost.

[0029] 4. This application, by setting up multiple clamping mechanisms, can simultaneously transfer multiple parts to be tested from one station to the next, improving efficiency and reducing the need for translating and lifting systems to drive the mounting base, thus lowering costs. Furthermore, depending on the posture of the parts at adjacent testing stations, for cases requiring a change in part orientation (e.g., horizontal axis with different orientations, or vertical axis with different orientations), or adjustments from a vertical to a horizontal axis, the clamping mechanism is configured to drive the clamping members to rotate via a motor and transmission structure. Combined with a limiting structure, this allows for precise adjustment of the part's posture. For cases requiring adjustments from a horizontal to a vertical posture, the position of the clamping members can be set to allow the part to rotate freely under its own weight, further reducing costs. This application can use clamping mechanisms in conjunction with conventional translation and lifting drive mechanisms to complete the transfer of multiple parts and their respective posture adjustments, effectively reducing costs and ensuring the efficiency of batch multi-parameter testing of parts. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the part transfer mechanism provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the clamping mechanism in the part transfer mechanism provided in an embodiment of the present invention, wherein the clamping component is driven to rotate by the cooperation of a motor and a transmission structure.

[0032] Figure 3 This is a partial structural diagram of the clamping mechanism in the part transfer mechanism provided in an embodiment of the present invention, wherein a counterweight is connected to the clamping member.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Mounting base; 2. Clamping mechanism; 21. Connector; 22. Drive component; 23. Clamping component; 231. Positioning groove; 24. Motor; 25. Transmission structure; 251. Drive gear; 252. Driven gear; 253. Transmission shaft; 26. Counterweight; 27. Limiting structure; 271. First limiting component; 272. Second limiting component; 2721. Limiting hole; 273. First elastic component; 274. Second elastic component; 275. Connecting shaft; 3. Slide cylinder; 4. Linear module. Detailed Implementation

[0035] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0037] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0038] It should be noted that when one 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 intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0039] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0040] Reference Figure 1-3As shown, this application embodiment provides a part transfer mechanism, including a mounting base 1 and a clamping mechanism 2 connected to the mounting base 1. The mounting base 1 can move along a first direction, both vertical and horizontal. The clamping mechanism 2 is used to clamp the part to be tested and adjust the posture of the part to be tested. Specifically, it includes two connecting members 21, a driving member 22, and two clamping members 23. The two connecting members 21 can move closer to or further 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 base 1. The driving member 22 is used to drive the two connecting members 21 to move closer to or further 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 about a first axis parallel to the second direction. It is suitable for clamping the part to be tested with an axis perpendicular to the second direction by the two clamping members 23 when the two connecting members 21 are close to each other, and restricting the relative movement between the part to be tested and the clamping members 23.

[0041] The clamping mechanism 2 grips the part to be measured, while the mounting base 1 moves along the vertical direction and the first direction to transfer the part. Because the clamping members 23 can rotate around the first axis, after the two clamping members 23 grip the part to be measured, the axis of the clamped part can be adjusted to a horizontal or vertical state by rotating the clamping members 23, thereby achieving the function of adjusting the posture of the part to be measured, and realizing the purpose of adjusting the posture of the part while transferring it. Compared with a robot, the drive mechanism for rotating the clamping members 23 is more convenient and less expensive, and can meet the needs of part posture adjustment.

[0042] Reference Figure 1 As shown, the mounting base 1 provides a mounting platform for the clamping mechanism 2. The vertical and horizontal movement of the mounting base 1 enables the clamping mechanism 2 to move horizontally and vertically, thereby achieving the function of moving the clamped part. In actual installation, the mounting base 1 is mounted on the testing platform. In this embodiment, the vertical movement of the mounting base 1 is achieved through a slide cylinder 3, and the horizontal movement in the first direction is achieved through a linear module 4. Correspondingly, the body of the slide cylinder 3 is fixed to the slide of the linear module 4, and the mounting base 1 is fixed to the slide of the slide cylinder 3. In some embodiments, the mounting base 1 can also move horizontally and perpendicular to the first direction as needed to further increase the transfer range of the part. The specific driving method is designed as needed, for example, it can also be driven by the slide cylinder 3.

[0043] Reference Figure 2-3As shown in the diagram, in this embodiment, the second direction and the first direction are parallel. The driving component 22 includes parallel grippers, and two connecting members 21 are respectively connected to the two fingers of the parallel grippers, so that the two connecting members 21 can move closer or further apart by moving the two fingers of the parallel grippers closer or further apart. In the design, in order to give the measured part sufficient space for posture adjustment, the connecting member 21 is designed as a rod and one end is connected to the finger of the parallel gripper, while the clamping member 23 is connected to the other end of the connecting member 21; in this embodiment, the connecting member 21 is shown vertically along its length, and the clamping member 23 is located at the lower end of the connecting member 21.

[0044] Reference Figure 2-3 As shown, furthermore, to ensure that the clamping member 23 can stably clamp the part under test, the side of the clamping member 23 that contacts the part under test is provided with a positioning groove 231, which is an arc shape with its 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 part under test. When the two clamping members 23 clamp the part under test, the part under test is restricted from moving relative to the clamping members 23 within the positioning groove 231, thereby improving the stability of the part under test during clamping.

[0045] Reference Figure 1 As shown, further, in this embodiment, multiple clamping mechanisms 2 are provided, and the multiple clamping mechanisms 2 are spaced apart along the first direction. In actual design, the clamping mechanisms 2 are set according to the number of inspection processes of the part being tested. The stations corresponding to multiple inspection processes can be spaced apart along the first direction, and the number of clamping mechanisms 2 is one less than the number of inspection processes. In this way, the parts being tested in multiple inspection stations can be clamped and picked up by multiple clamping mechanisms 2 at the same time and transferred to the next process, thereby improving the part transfer efficiency and inspection efficiency. Moreover, the multiple clamping mechanisms 2 can move as a whole through the movement of a mounting base 1, which can reduce the number of mounting base 1 drive mechanisms and reduce costs.

[0046] Reference Figure 1-2 As shown, further, in order to achieve the purpose of adjusting the posture of the tested part to the set posture, in at least one clamping mechanism 2, the connecting member 21 is provided with a motor 24, and the clamping member 23 is connected to the motor 24 through the transmission structure 25. The motor 24 drives the clamping member 23 to rotate through the transmission structure 25.

[0047] Reference Figure 1-2As 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. Thus, when the motor 24 is pneumatically operated, the driving gear 251 and the driven gear 252 work together 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 part to be measured, the posture of the part to be measured can be adjusted by driving the clamping member 23 to rotate through the motor 24.

[0048] Reference Figure 1 and Figure 3 As shown, at least one clamping mechanism 2 is further configured such that when the two clamping members 23 clamp the part to be measured, the parts of the part to be measured located on both sides of the first axis in its axial direction have different weights, which is suitable for the part to be measured and the clamping members 23 to rotate around the first axis to the position where the axis of the part to be measured is vertical under the action of the gravity of the part to be measured.

[0049] Reference Figure 3 As shown, specifically, the clamping member 23 is configured such that the weights on both sides of the first axis in the circumferential direction of the positioning groove 231 are different, and it is adapted to rotate under the gravity of the clamping member 23 to a horizontal position relative to the axis of the positioning groove 231. In this embodiment, a counterweight 26 is provided on one side of the clamping member 23 in the circumferential direction of the positioning groove 231 relative to the first axis, so that the clamping member 23 can freely rotate to a horizontal position relative to the axis of the positioning groove 231 when not clamping the part to be measured, thereby facilitating the clamping of the part to be measured in a horizontal position.

[0050] With the above settings, based on the posture of the part at two adjacent inspection stations, for situations requiring a change in part orientation (e.g., horizontal axis with different orientations, or vertical axis with different orientations), or adjusting the part from vertical to horizontal axis, the motor 24, in conjunction with the transmission structure 25, can drive the clamping member 23 to rotate to achieve the desired part orientation. For situations requiring a change in part orientation from horizontal to vertical, the position of the clamping member 23 can be set to allow the part to rotate freely due to its own weight, further reducing costs. In this embodiment, four clamping mechanisms 2 are used for illustration, with the clamping member 23 in three of the clamping mechanisms 2 driven to rotate by the motor 24, and the clamping member 23 in the other clamping mechanism 2 driven to rotate by the counterweight 26.

[0051] Reference Figure 2-3As shown, further, in order to achieve precise positioning for adjusting the posture of the part, a limiting structure 27 is provided between the clamping member 23 and the connecting member 21. The limiting structure 27 is used to restrict the rotation of the clamping member 23 when the clamping member 23 clamps the part to be measured and rotates in one rotation direction to the horizontal or vertical posture of the axis of the part to be measured.

[0052] During the design process, based on the posture of the part being measured at the previous station and the posture at the next station, the rotation of the part being measured is restricted when it is rotated to a set vertical or horizontal axis posture. This keeps the part in the set posture and transfers it to the next process, thereby ensuring the accuracy of the posture of the part being measured and accurately transferring it to the next process.

[0053] 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 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 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 has 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 align 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 to rotate 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, it overcomes the elastic force of the first elastic member 273.

[0054] The first limiting member 271 includes a first position and a second position, with the first position close to the clamping member 23. The second limiting member 272 includes a third position and a fourth position, with the third position 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 movement trajectory of the first limiting member 271 as it rotates with the clamping member 23. When the first limiting member 271 is in the second position, the second limiting member 272 in the third position is on the movement trajectory of the first limiting member 271 as it rotates with the clamping member 23. The second limiting member 272 in the fourth position is outside the movement trajectory of the first limiting member 271 as it rotates with the clamping member 23. The second limiting member 272 is adapted to be driven by the first limiting member 271 to move from the third position to the fourth position when the first limiting member 271 is in the second position and rotates with the clamping member 23 in one rotation direction.

[0055] Specifically, to achieve the purpose of driving the second limiting member 272 to move from the third position to the fourth position via the first limiting member 271, the side of the second limiting member 272 that abuts against the first limiting member 271 is provided 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, so that the first limiting member 271 is inserted into the limiting hole 2721, thereby restricting the rotation of the first limiting member 271 and the clamping member 23 through the second limiting member 272.

[0056] Reference Figure 2-3 As shown, a second elastic member 274 is provided between the first limiting member 271 and the clamping member 23. When the first limiting member 271 moves from the first position to the second position, it overcomes the elastic force of the second elastic member 274. It is also suitable for the first limiting member 271 to move from the first position to the second position when the two clamping members 23 are close to each other and clamping the part to be tested.

[0057] Reference Figure 2-3 As shown, in this embodiment, 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. The connecting shaft 275 can move axially relative to the clamping member 23. When the two clamping members 23 approach each other to clamp the part to be tested, the connecting shaft 275 abuts against the part to be tested and is driven to move by the part to be tested. In the design, after the part to be tested is clamped by the clamping member 23, the first limiting member 271 moves with the connecting shaft 275 to the second position. After the part to be tested is put down, the first limiting member 271 returns to the first position under the action of the second elastic member 274.

[0058] With the above settings, when the clamping member 23 clamps the part, the part causes the first limiting member 271 to move to the second position against the elastic force of the second elastic member 274. At this time, the first limiting member 271 rotates with the clamping member 23, and when it rotates to abut against the second limiting member 272, it drives the second limiting member 272 to move to the fourth position against the elastic force of the first elastic member 273. When the first limiting member 271 is aligned with the limiting hole 2721, the second limiting member 272 returns to the third position under the action of the elastic force of the first elastic member 273, so that the first limiting member 271 is inserted into the limiting groove, thereby restricting the rotation of the first limiting member 271, that is, restricting the rotation of the clamping member 23 and the measured part, so that the part is kept in the set posture and transferred to the next process, improving the accuracy of the part posture. When the part is transferred to the next station and released, the first limiting member 271 returns to the first position under the elastic force of the second elastic member 274. At this time, the first limiting member 271 disengages from the limiting hole 2721, and the first limiting member 271 and the clamping member 23 can rotate freely, thereby allowing the clamping member 23 to reset and continue to grip the part in the previous station. The entire structure is simple and effective, does not rely on sensors or other control methods, and has low cost.

[0059] In this embodiment, the first limiting member 271 is a limiting rod with one end fixed to the connecting shaft 275, while the second limiting member 272 is a limiting rod with its length direction parallel to the first axis. The limiting rod passes through the connecting member 21 and can move relative to the connecting member 21 along its length. 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 limiting rod and its two ends are fixed to the limiting rod and the connecting member 21, respectively. The second elastic member 274 is sleeved outside the connecting shaft 275 and its two ends are fixed to the first limiting member 271 and the clamping member 23, respectively. The position of the second limiting member 272 is set according to the final posture of the clamping mechanism 2 for clamping the part to be measured.

[0060] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A parts transfer mechanism, characterized in that, include: Mounting base (1), which can move in a vertical direction and a first horizontal direction; A clamping mechanism (2) connected to the mounting base (1), the clamping mechanism (2) comprising: Two connectors (21) are movable toward or away from each other along a second direction, and the second direction is horizontal; A drive member (22) that connects the two connectors (21) and the mounting base (1) is used to drive the two connectors (21) to move closer to or further away from each other in 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) about a first axis parallel to the second direction. They are suitable for clamping the test part whose axis is perpendicular to the second direction by the two clamping members (23) when the two connecting members (21) are close to each other, and restricting the relative movement of the test part and the clamping members (23). A limiting structure (27) is provided between the clamping member (23) and the connecting member (21). The limiting structure (27) is used to restrict the rotation of the clamping member (23) when the clamping member (23) clamps the part to be measured and rotates in one rotation direction to a horizontal or vertical position of the axis of the part to be measured. The limiting structure (27) includes: A first limiting member (271) is 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 the first axis direction. A second limiting member (272) is 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). When the first limiting member (271) is inserted into the limiting hole (2721), it is restricted by the second limiting member (272) to rotate around the first axis. A first elastic element (273) is disposed between the second limiting element (272) and the connecting element (21). When the second limiting element (272) moves away from the clamping element (23) along the first axis, it overcomes the elastic force of the first elastic element (273). The first limiting member (271) includes a first position and a second position, the first position being close to the clamping member (23). The second limiting member (272) includes a third position and a fourth position, the third position being 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 movement trajectory of the first limiting member (271) as it rotates with the clamping member (23). When the first limiting member (271) is in the second position, the second limiting member (272) is located outside the movement trajectory of the first limiting member (271) as it rotates with the clamping member (23). When the first limiting member (271) is in the second position, the third limiting member (272) is located outside the movement trajectory of the first limiting member (271) as it rotates with the clamping member (23). The second limiting member (272) is located on the movement trajectory of the first limiting member (271) rotating with the clamping member (23), and the second limiting member (272) located in the fourth position is outside the movement trajectory of the first limiting member (271) rotating with the clamping member (23). It is adapted to drive the second limiting member (272) from the third position to the fourth position when the first limiting member (271) is in the second position and rotates with the clamping member (23) in a rotation direction. A second elastic element (274) is provided between the first limiting member (271) and the clamping member (23). When the first limiting member (271) moves from the first position to the second position, it overcomes the elastic force of the second elastic element (274). It is also suitable for the first limiting member (271) to move from the first position to the second position by the measured part when the two clamping members (23) are close to each other and clamp the measured part.

2. The parts transfer mechanism according to claim 1, 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). The connecting shaft (275) can move axially relative to the clamping member (23). When the two clamping members (23) approach each other to clamp the part to be tested, the connecting shaft (275) abuts against the part to be tested and is driven to move by the part to be tested.

3. The parts transfer mechanism according to claim 1, characterized in that: The clamping mechanism (2) is provided in multiple ways, and the multiple clamping mechanisms (2) are spaced apart along the first direction.

4. The parts transfer mechanism according to claim 3, characterized in that: In at least one of the clamping mechanisms (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). The motor (24) drives the clamping member (23) to rotate through the transmission structure (25).

5. The parts transfer mechanism according to claim 3 or 4, 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 tested, the parts of the part to be tested located on both sides of the first axis in its axial direction have different weights, which is suitable for rotating the part to be tested and the clamping members (23) around the first axis to a position where the axis of the part to be tested is vertical under the action of the gravity of the part to be tested.

6. The parts transfer mechanism according to claim 5, characterized in that: The clamping member (23) has a positioning groove (231) on the side that contacts the part to be measured. The positioning groove (231) is an arc shape with its axis perpendicular to the first axis. The clamping member (23) has different weights on both sides of the first axis in the circumferential direction of the positioning groove (231), which is suitable for rotating the clamping member (23) to the horizontal position of the positioning groove (231) under the action of gravity.

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