Multi-workpiece holding and self-rotation mechanism

Abstract

The application discloses a multi-workpiece clamping self-rotation mechanism, which comprises a frame body, a rotation driver, a first pressing device and a second pressing device. The first pressing device comprises a first linear driver, a first sliding seat and a first pressing shaft, and a first pair of inserting structures are arranged on the first pressing shaft. The second pressing device comprises a second linear driver, a second sliding seat, a shaft sleeve and a second pressing shaft assembled on the second sliding seat. A second pair of inserting structures are arranged on the shaft sleeve. The rotation driver is located beside the second pressing device and is used for driving the shaft sleeve to rotate. In the process that the first pressing device and the second pressing device clamp the workpiece, the first pair of inserting structures and the second pair of inserting structures are inserted together, so that each shaft sleeve drives a corresponding second pressing shaft and a first pressing shaft to rotate together under the driving of the rotation driver, thereby achieving the purpose of clamping and self-rotation of multiple workpieces in a limited space.

Description

Technical Field

[0001] This invention relates to a clamping and rotating mechanism applicable to industries such as consumer electronics, precision instruments, home appliances, and display devices, and particularly to a clamping and rotating mechanism for multiple workpieces that enables individual clamping and rotation of multiple workpieces in space-constrained situations. Background Technology

[0002] In automated production processes, the use of workpiece clamping and rotating devices is indispensable because the workpiece feeding angle, workpiece processing angle (such as workpiece scanning angle or workpiece machining angle), and workpiece picking angle are different.

[0003] For example, the multi-part combination 180-degree flipping jig arc welding fixture disclosed in 202021462121.5, although it can clamp and rotate multiple workpieces, has the drawback that each workpiece cannot rotate independently and occupies a large space.

[0004] Therefore, there is an urgent need for a multi-workpiece clamping and rotation mechanism suitable for space-constrained conditions to achieve the clamping and rotation of multiple workpieces, thereby overcoming one or more of the aforementioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping and rotating mechanism for multiple workpieces that can be clamped and rotated independently under space-constrained conditions.

[0006] To achieve the above objectives, the multi-workpiece clamping and rotating mechanism of the present invention includes a frame, a rotational driver mounted on the frame, and a first pressing device and a second pressing device that move closer together to clamp workpieces or further apart to release workpieces along the X-axis. The first pressing device includes a first linear driver fixed to the frame, a first slide block mounted to the sliding end of the first linear driver, and a plurality of first pressing shafts rotatably mounted on the first slide block and sliding along the X-axis following the first slide block. Each first pressing shaft is spaced apart along the Y-axis and can slide relative to the first slide block within a predetermined range along the X-axis. Each first pressing shaft also has a first interlocking structure eccentric to the axis of the first pressing shaft. The second pressing device includes a second linear driver fixed to the frame, a second slide block mounted to the sliding end of the second linear driver, a bushing rotatably mounted on the frame in the same number as the first pressing shafts, and a bushing mounted on the second slide block and sliding along the X-axis following the first pressing shaft. The second sliding block slides along the X-axis direction with a second pressing shaft. The number of second pressing shafts is the same as the number of bushings. Each second pressing shaft can slide relative to the corresponding bushing along the X-axis direction, passing through it and rotating with the bushing. Each bushing is provided with a second mating structure for mating with a first mating structure on a corresponding first pressing shaft. The rotary driver is located beside the second pressing device along the Z-axis direction and is used to drive the bushing to rotate. When the first pressing device and the second pressing device approach each other to clamp the workpiece, the first mating structure and the second mating structure are mated together. Then, each bushing, driven by the rotary driver, drives a corresponding second pressing shaft and a first pressing shaft to rotate together.

[0007] Compared with the prior art, by means of the design that "each first pressing shaft is also provided with a first mating structure eccentric to the axis of the first pressing shaft; and each second pressing shaft can slide relative to each other along the X-axis direction through a corresponding bushing and rotate with the bushing, and each bushing is provided with a second mating structure for mating with the first mating structure on the corresponding first pressing shaft", when the first pressing device and the second pressing device approach each other to clamp the workpiece, the first mating structure and the second mating structure are mated together. Then, each bushing drives the corresponding second pressing shaft and the first pressing shaft to rotate together under the drive of the rotation driver. Thus, the multi-workpiece clamping and rotating mechanism of the present invention can be applied to the purpose of clamping and rotating multiple workpieces in space-constrained conditions.

[0008] Preferably, the first pressing device further includes hollow members that are rotatably mounted on the frame and are the same number as the first pressing shafts. Each first pressing shaft can slide relative to the corresponding hollow member along the X-axis direction. Each first pressing shaft is provided with a radially protruding structure that protrudes radially from the first pressing shaft and is located between the bushing and the hollow member. Each first pressing shaft is fitted with a spring that abuts against the radially protruding structure and the hollow member. The first mating structure is located on the hollow member and is located on the side of the radially protruding structure in the radial direction of the first pressing shaft.

[0009] Preferably, the first slide has a first limiting end face and a second limiting end face arranged spaced apart in the X-axis direction, and each first pressing shaft has a limiting head placed between the first limiting end face and the second limiting end face. The first pressing shaft slides relative to the first slide within the preset range by means of the abutment of the limiting head with the first limiting end face or the second limiting end face. The spring is used to drive the first pressing shaft to slide towards the second pressing shaft until the limiting head abuts with the second limiting end face.

[0010] Preferably, each of the hollow components has an anti-rotation channel through which a corresponding first pressing shaft passes, and each first pressing shaft has an anti-rotation profile that mates with the anti-rotation channel.

[0011] Preferably, each bushing has an anti-rotation channel through which a corresponding second pressure shaft passes and is relatively anti-rotated, and each second pressure shaft has an anti-rotation profile that mates with the anti-rotation channel.

[0012] Preferably, the first pressure shaft, the second pressure shaft, and the bushing are all in an even number. Each pair of bushings corresponds to one rotary driver. Each pair of bushings and the corresponding rotary driver are each fixedly fitted with a synchronous pulley. A synchronous belt is simultaneously wound around the synchronous pulleys of each pair of bushings and the corresponding rotary driver.

[0013] Preferably, the second pressing shaft is provided with a supporting and positioning block for supporting and positioning the workpiece. The supporting and positioning block protrudes from the second pressing shaft in a direction close to the first pressing shaft. The supporting and positioning block has a supporting and positioning cavity facing the first pressing shaft. The supporting and positioning cavity is also arranged to extend radially outward along the second pressing shaft in a one-sided through-hole configuration. The second mating structure is located on the side of the supporting and positioning block in the radial direction of the second pressing shaft. The first pressing shaft is provided with a flexible pressing member extending around the axis of the first pressing shaft. The flexible pressing member is aligned with the supporting and positioning cavity in the X-axis direction. The first mating structure is located on the side of the flexible pressing member in the radial direction of the first pressing shaft.

[0014] Preferably, the flexible pressing member has a disc-shaped pressing structure facing the supporting positioning cavity.

[0015] Preferably, the frame has a through cavity arranged along the Z-axis, the first and second mating structures are located in the through cavity, and the first top pressure shaft, the second top pressure shaft and the bushing are partially located in the through cavity.

[0016] Preferably, the first linear actuator and the second linear actuator are each a pneumatic cylinder or a hydraulic cylinder with its cylinder body fixed on the frame; the rotary actuator is a motor. Attached Figure Description

[0017] Figure 1 This is a perspective view of the multi-workpiece clamping and rotating mechanism of the present invention when the first pressing device and the second pressing device are in the clamping position.

[0018] Figure 2 yes Figure 1 The diagram shows a plan view of the multi-workpiece clamping and rotating mechanism viewed from the positive direction along the Y-axis.

[0019] Figure 3 yes Figure 1 A perspective view showing the hidden rotary drive and the remaining parts of the frame, excluding the first and second mounting plates.

[0020] Figure 4 Is Figure 3 The first and second pressing devices are in the released position, based on the above.

[0021] Figure 5 yes Figure 3 A plan view viewed in the opposite direction along the Z-axis.

[0022] Figure 6 yes Figure 3 A plan view taken along the positive direction of the Y-axis.

[0023] Figure 7 This is a perspective view of the first pressing device in the multi-workpiece clamping and rotating mechanism of the present invention, assembled on the first mounting plate.

[0024] Figure 8 yes Figure 7 A plan view viewed in the direction indicated by the arrow next to the first mounting plate.

[0025] Figure 9 This is a perspective view of the first pressing shaft, hollow component, and first interlocking structure of the first pressing device in the multi-workpiece clamping and rotating mechanism of the present invention.

[0026] Figure 10 yes Figure 9 3D exploded view.

[0027] Figure 11 yes Figure 1 A perspective view showing the hidden rotary drive, first pressing device, and the remaining portion of the frame excluding the first mounting plate.

[0028] Figure 12 This is a perspective view of the second pressing device in the multi-workpiece clamping and rotating mechanism of the present invention, assembled on the second mounting plate.

[0029] Figure 13 yes Figure 12 A plan view viewed in the direction indicated by the arrow next to the second mounting plate.

[0030] Figure 14 This is a perspective view of the second pressing shaft, bushing, and second interlocking structure of the second pressing device in the multi-workpiece clamping and rotating mechanism of the present invention.

[0031] Figure 15 yes Figure 14 3D exploded view. Detailed Implementation

[0032] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0033] Please see Figure 1 The multi-workpiece clamping and rotating mechanism 100 of the present invention is used to clamp multiple workpieces, allowing each clamped workpiece to rotate independently, thus adapting to space-constrained applications. Furthermore, in conjunction with... Figures 2 to 6 The multi-workpiece clamping and rotating mechanism 100 of the present invention includes a frame 10, a rotation driver 20, a first pressing device 30 and a second pressing device 40.

[0034] Among them, Yu Figure 1 and Figure 2In this example, the frame 10 has a through cavity 11, a first mounting plate 12, a second mounting plate 13, a first support bracket 14, and a second support bracket 15; the first mounting plate 12 is opposite to (e.g., but not limited to) the second mounting plate 13 along the X-axis and spaced apart, and the through cavity 11 is located between the first mounting plate 12 and the second mounting plate 13 along the X-axis; the upper end of the first support bracket 14 is fixedly connected to the end of the first mounting plate 12 away from the second mounting plate 13, and the lower end of the first support bracket 15 is fixedly connected to the end of the first mounting plate 12 away from the second mounting plate 13. Mounting plate 12 extends along the Z-axis direction (i.e., the opposite direction of the Z-axis); the upper end of the second support bracket 15 is assembled and connected to the end of the second mounting plate 13 near the first mounting plate 12, and the lower end of the second support bracket 15 extends along the Z-axis direction away from the second mounting plate 13 (i.e., the opposite direction of the Z-axis); therefore, with the help of the first support bracket 14 and the second support bracket 15, the first mounting plate 12 and the second mounting plate 13 are suspended on an external support (such as a machine tool); obviously, depending on actual needs, the frame 10 can also be other structures, so it is not limited to... Figure 1 and Figure 2 The above is the limit.

[0035] The rotary actuator 20 is mounted on the frame 10, which provides support for the rotary actuator 20; the rotary actuator 20 is also used to drive the bushing 43, described below, to rotate; alternatively, in Figure 1 , Figure 2 and Figure 11 In this example, the rotary actuator 20 is a motor, such as, but not limited to, a servo motor, to improve the control precision of the rotary actuator 20 and meet the requirement of an angle adjustment accuracy of 0.1 degrees for the workpiece. Alternatively, when the frame 10 has a through cavity 11, a first mounting plate 12, a second mounting plate 13, a first support bracket 14, and a second support bracket 15, the rotary actuator 20 is mounted on the second support bracket 15 to meet the requirement that the rotary actuator 20 is located beside the second pressing device 40 in the Z-axis direction. See the attached diagram. Figure 2 As shown.

[0036] The first pressing device 30 and the second pressing device 40 can approach each other along the X-axis to clamp the workpiece, and the first pressing device 30 and the second pressing device 40 can also move away from each other along the X-axis to release the workpiece, so as to meet the needs of the first pressing device 30 and the second pressing device 40 jointly clamping or releasing the workpiece; the first pressing device 30 includes a first linear actuator 31, a first slide 32 and four first pressing shafts 33 that are rotatably mounted on the first slide 31 and slide along the X-axis with the first slide 32 (see Figure 5Each first pressing shaft 33 is arranged spaced apart from each other along the Y-axis. Each first pressing shaft 33 can also slide relative to the first slide block 32 within a preset range along the X-axis. Each first pressing shaft 33 is also provided with a first interlocking structure 34 eccentric to the axis C1 of the first pre-pressing shaft 33. See the state below. Figure 9 As shown. The first linear actuator 31 is fixed to the frame 10, and the frame 10 provides support for the first linear actuator 31; alternatively, in Figures 1 to 3 In this example, when the frame 10 has a through cavity 11, a first mounting plate 12, a second mounting plate 13, a first support bracket 14, and a second support bracket 15, the rotary actuator 20 is fixed to the first mounting plate 12, and the first linear actuator 31 is a hydraulic or pneumatic cylinder with its cylinder body 312 fixed to the frame 10 (e.g., the first mounting plate 12), effectively reducing the space occupied by the first linear actuator 31 in the Z-axis direction. The first slide 32 is assembled and connected to the sliding end 311 of the first linear actuator 31 to meet the need for the first slide 32 to slide along the X-axis direction under the drive of the first linear actuator 31. It should be noted that although... Figure 5 The diagram shows four first-pressure shafts 33. Obviously, depending on actual needs, the number of first-pressure shafts 33 could be three, five, or more; therefore, it is not considered... Figure 5 The above is the limit.

[0037] The second pressing device 40 includes a second linear actuator 41, a second slide 42, a bushing 43, and a second pressing shaft 44. The second linear actuator 41 is fixed to the frame 10 (e.g., the second mounting plate 13 of the frame 10), and the frame 10 provides support for the second linear actuator 41. Alternatively, as an example, the second linear actuator 41 is a hydraulic cylinder or pneumatic cylinder with a cylinder body 412 fixed to the frame 10 (e.g., the second mounting plate 13 of the frame 10) to effectively reduce the space occupied by the second linear actuator 41 in the Z-axis direction. The second slide 42 is assembled and connected to the sliding end 411 of the second linear actuator 41 to meet the need for the second slide 42 to slide along the X-axis direction under the drive of the second linear actuator 41. The bushing 43 is rotatably mounted on the frame 10 to meet the requirement of the bushing 43 rotating relative to the frame 10; the number of bushings 43 is the same as the number of first pressing shafts 33, so that each bushing 43 corresponds to one first pressing shaft 33; each bushing 43 is provided with a second mating structure 45 for mating with the first mating structure 34 on the corresponding first pressing shaft 33. The second pressing shaft 44 is mounted on the second slide block 42 and slides along the X-axis with the second slide block 42; the number of second pressing shafts 44 is the same as the number of bushings 43, so that each bushing 43 corresponds to one second pressing shaft 44; each second pressing shaft 44 can slide relative to the corresponding bushing 43 along the X-axis and rotate with the bushing 43.

[0038] Therefore, during the process of the first pressing device 30 and the second pressing device 40 approaching each other to clamp the workpiece, the approaching first pressing device 30 and the second pressing device 40 will cause the first mating structure 34 and the second mating structure 45 to mat together, as shown in the figure. Figure 3 , Figure 5 or Figure 6 As shown; at this time, each bushing 43, driven by the rotary driver 20, drives its corresponding second pressing shaft 44 and first pressing shaft 33 to rotate together, so as to meet the requirement that each workpiece after clamping can also rotate to adjust its angle (orientation). It should be noted that, at Figure 1 In the case where the frame 10 has a through cavity 11 arranged along the Z-axis, the first pair of insertion structures 34 and the second pair of insertion structures 45 are located in the through cavity 11, and the first top pressing shaft 33, the second top pressing shaft 44, and the bushing 43 are partially located in the through cavity 11, as shown in the figure. Figure 1 As shown, this arrangement makes the first pressing device 30 and the second pressing device 40 more rational and compact on the frame 10, occupying less space. More specifically, see the description below.

[0039] Combination Figures 7 to 10As an example, the first pressing device 20 also includes hollow members 35 that are rotatably mounted on the frame 10 and are the same number as the first pressing shafts 33. Each first pressing shaft 33 can slide relative to the corresponding hollow member 35 along the X-axis direction. Each first pressing shaft 33 is provided with a radially protruding structure 331 that protrudes radially from the first pressing shaft 33 and is located between the bushing 43 and the hollow member 35. See the diagram for details. Figure 3 As shown; each first pressing shaft 33 is fitted with a spring 36 that abuts against the radially convex structure 331 and the hollow member 35, as shown in the diagram. Figure 7 As shown; at this time, the first mating structure 34 is located on the hollow member 35, and the first mating structure 34 is also located on the side of the radially convex structure 331 in the radial direction of the first pressing shaft 33, as shown in the figure. Figure 9 As shown; therefore, the hollow component 35 improves the smoothness and sensitivity of the rotation of the first top pressing shaft 33 relative to the frame 10; in addition, with the auxiliary clamping of the spring 36, the actions of the first top pressing device 30 and the second top pressing device 40 in clamping the workpiece are synchronized and the force is even, avoiding damage to the appearance of the workpiece, adapting to irregular workpieces (this is because the design of the spring 36 allows the clamping force to be flexibly adjusted), and solving the problem of poor synchronization.

[0040] like Figure 6 As shown in the figure, as an example, the first slide block 32 has a first limiting end face 321 and a second limiting end face 322 arranged spaced apart in the X-axis direction; at this time, each first pressing shaft 33 has a limiting head 332 placed between the first limiting end face 321 and the second limiting end face 322; therefore, by means of the contact between the limiting head 332 and the first limiting end face 321 or the second limiting end face 322, the first pressing shaft 33 is controlled to slide relative to the first slide block 32 within a preset range, that is, the sliding range of the first pressing shaft 33 relative to the first slide block 32 is controlled by the first limiting end face 321 and the second limiting end face 322; in conjunction with the spring 36, the clamping force of the first pressing shaft 33 on the workpiece can be flexibly adjusted. In addition, the spring 36 is used to drive the first pressing shaft 33 to slide towards the second pressing shaft 44 until the limiting head 332 abuts against the second limiting end face 322, as shown in the figure. Figure 8 As shown. Furthermore, in Figure 9 and Figure 10 As an example, each hollow component 35 has an anti-rotation channel 351 through which a corresponding first pressing shaft 33 passes. Each first pressing shaft 33 has an anti-rotation profile 333 that mates with the anti-rotation channel 351. This design ensures that the first pressing shaft 33 can only slide relative to the hollow component 35 along the X-axis direction and cannot rotate relative to the hollow component 35, thus satisfying the requirement that the first pressing shaft 33 rotates relative to the frame 10 along with the hollow component 35. It should be noted that... Figure 10As an example, the anti-rotation channel 351 is a non-circular channel, for example, the cross-sectional outer contour is an ellipse, a regular polygon, or a shape composed of curved edges and straight edges; correspondingly, the anti-rotation contour 333 is a non-circular contour, for example, the cross-sectional outer contour is an ellipse contour, a regular polygon contour, or a contour composed of curved edges and straight edges.

[0041] like Figure 14 and Figure 15 As shown, as an example, each bushing 43 has an anti-rotation channel 431 through which a corresponding second pressing shaft 44 passes and is relatively anti-rotating. Each second pressing shaft 44 has an anti-rotation profile 441 that mates with the anti-rotation channel 431. This design ensures that the second pressing shaft 44 can only slide relative to the bushing 43 along the X-axis direction and cannot rotate relative to the bushing 43, thereby satisfying the requirement that the second pressing shaft 44 rotates relative to the frame 10 along with the bushing 43. It should be noted that... Figure 15 In the example, the anti-rotation channel 431 is a non-circular channel, for example, the cross-sectional outer contour is an ellipse, a regular polygon, or a shape composed of curved edges and straight edges. Correspondingly, the anti-rotation contour 441 is a non-circular contour, for example, the cross-sectional outer contour is an ellipse contour, a regular polygon contour, or a contour composed of curved edges and straight edges.

[0042] like Figure 5 As shown in the figure, as an example, since there are four of each of the first pressing shaft 33, the second pressing shaft 44, and the bushing 43 (i.e., a positive even number), correspondingly, every two bushings 43 correspond to one rotary driver 20. A synchronous pulley 50 is fixedly fitted onto each pair of bushings 43 and their corresponding rotary driver 20. A synchronous belt 60 is simultaneously wound around the synchronous pulleys 50 of each pair of bushings 43 and their corresponding rotary driver 20. (See figure for details.) Figure 11 As shown, this design achieves the purpose of reliably rotating two workpieces by a single rotary driver 20. More importantly, it does not increase the size of the frame 10 in the Z-axis and Y-axis directions, making it more reasonable and compact. In addition, the cooperation between the synchronous pulley 50 and the synchronous belt 60 ensures that the transmission is free from slippage and jamming, and the design is concealed, so it does not affect the appearance.

[0043] like Figure 4 As shown in the figure, as an example, the second pressing shaft 44 is provided with a supporting and positioning block 46 for supporting and positioning the workpiece. The supporting and positioning block 46 protrudes from the second pressing shaft 44 in a direction close to the first pressing shaft 33. The supporting and positioning block 46 has a supporting and positioning cavity 461 facing the first pressing shaft 33. The supporting and positioning cavity 461 is also arranged radially outward along the second pressing shaft 44 in a one-sided through-hole configuration. The second mating structure 45 is located on the side of the supporting and positioning block 46 in the radial direction of the second pressing shaft 44, as shown in the figure. Figure 4As shown; to ensure that there is no interference between the workpiece supported by the positioning block 46 and the second mating structure 45. A flexible pressing member 37 (see...) is provided on the first pressing shaft 33, extending around the axis C1 of the first pressing shaft 33. Figure 9 The flexible top pressing component 37 is aligned with the supporting positioning cavity 461 along the X-axis direction, as shown in the figure. Figure 4 At this time, the first pair of interlocking structures 34 is located radially to the side of the flexible pressing member 37 on the first pressing shaft 33, and the state is also shown. Figure 4 As shown, this is to ensure that there is no interference between the workpiece supported by the flexible pressing member 37 and the first mating structure 34. Specifically, in Figure 7 As an example, the flexible pressing member 37 has a disc-shaped pressing structure 371 facing the supporting positioning cavity 461, so that the flexible pressing member 37 fits the shape of the workpiece more closely, thereby ensuring the reliability of the pressing of the workpiece by the flexible pressing member 37. More specifically, as an example, both the supporting positioning block 46 and the flexible pressing member 37 are made of soft wear-resistant materials with polished and scratch-resistant surfaces; in addition, the spring 36 is made of high-temperature resistant and wear-resistant elastic material; furthermore, both the first pressing shaft 33 and the second pressing shaft 44 are made of lightweight stainless steel with scratch-resistant and oxidation-resistant materials on their surfaces; and both the bushing 43 and the hollow component 35 have wear-resistant and oxidation-resistant treatments on their surfaces. The mating points of the bushing 43 and the synchronous pulley 50, the bushing 43 and the second pressing shaft 44, and the first pressing shaft 33 and the hollow component 35 are each provided with anti-slip structures to prevent transmission slippage and ensure stable power transmission.

[0044] Combination Figures 1 to 15 The working principle of the multi-workpiece clamping and rotating mechanism of the present invention will be explained as follows: First, the first linear actuator 31 drives the first slide 32 to slide together the first pressing shaft 33, the first mating structure 34 and the flexible pressing member 37 in a direction away from the second pressing device 40, while the spring 36 is compressed during the sliding process; the second linear actuator 41 drives the second slide 42 to slide together the second pressing shaft 44, the second mating structure 45 and the supporting positioning block 46 in a direction away from the first pressing device 30; thus, while increasing the distance between the flexible pressing member 37 and the supporting positioning block 46 in the X-axis direction, it also separates the first mating structure 34 from the second mating structure 45 in the X-axis direction.

[0045] Next, the workpiece is placed on the support positioning cavity 461 of the support positioning block 46 until all the support positioning cavities 461 of the support positioning blocks 46 are filled with workpieces.

[0046] Next, the first linear actuator 31 drives the first slide 32 to move the first pressing shaft 33, the first mating structure 34, and the flexible pressing member 37 together in a direction close to the second pressing device 40. During this sliding process, the spring 36 provides a restoring force, creating conditions for the flexible pressing member 37 to press the workpiece in a buffered manner. The second linear actuator 41 drives the second slide 42 to move the second pressing shaft 44, the second mating structure 45, and the supporting positioning block 46 together in a direction close to the first pressing device 30. This reduces the distance between the flexible pressing member 37 and the supporting positioning block 46 in the X-axis direction, and also makes the first mating structure 34 and the second mating structure 45 gradually approach each other in the X-axis direction until the workpiece is clamped by the flexible pressing member 37 and the supporting positioning block 46, and the first mating structure 34 and the second mating structure 35 are mated together.

[0047] Then, the rotary driver 20 operates, driving each bushing 43 to rotate. Each rotating bushing 43 drives a corresponding second pressing shaft 44, a supporting positioning block 46, a first pressing shaft 33, a flexible pressing component 37, and a workpiece to rotate together to a set angle. After rotating to the set angle, the rotary driver 20 stops operating and locks to meet the needs of the workpiece to perform corresponding operations (such as, but not limited to, barcode scanning) at that set angle. When the workpiece needs to be adjusted, the rotary driver 20 drives the bushing 43 to rotate to the desired angle. When the workpiece needs to be released, the first linear driver 31 drives the first slide 32 and the second linear driver 41 drives the second slide 42 to move away from each other.

[0048] Compared with the prior art, by means of the design that "each first pressing shaft 33 is also provided with a first interlocking structure 34 eccentric to the axis C1 of the first pressing shaft 33; and each second pressing shaft 45 can slide relative to each other along the X-axis direction through a corresponding bushing 43 and rotate with the bushing 43, and each bushing 43 is provided with a second interlocking structure 45 for interlocking with the first interlocking structure 34 on the corresponding first pressing shaft 33", when the first pressing device 30 and the second pressing device 40 approach each other to clamp the workpiece, the first interlocking structure 34 and the second interlocking structure 45 are interlocked together. Then, each bushing 43 drives the corresponding second pressing shaft 44 and the first pressing shaft 33 to rotate together under the drive of the rotation driver 20. Thus, the multi-workpiece clamping and rotating mechanism 100 of the present invention can be applied to achieve the purpose of clamping and rotating multiple workpieces in space-constrained situations.

[0049] It is worth noting that the X-axis, Y-axis, and Z-axis directions are all bidirectional, meaning they include both positive and negative directions. Furthermore, the aforementioned rotation is expressed as a rotation around its central axis (axis line), for example, at... Figure 5In the middle, the centerline of each bushing 43 coincides with the centerline of the corresponding hollow component 35, see Figure 5 As shown by the center line at the top center.

[0050] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A multi-workpiece clamping and rotating mechanism, comprising a frame, a rotation driver mounted on the frame, and a first pressing device and a second pressing device that move closer together along the X-axis to clamp the workpieces or move further apart to release the workpieces; characterized in that, The first pressing device includes a first linear actuator fixed to the frame, a first slide block assembled with the sliding end of the first linear actuator, and a plurality of first pressing shafts rotatably mounted on the first slide block and sliding along the X-axis direction with the first slide block. Each first pressing shaft is spaced apart from each other along the Y-axis direction and can slide relative to the first slide block within a preset range along the X-axis direction. Each first pressing shaft is also provided with a first mating structure eccentric to the axis of the first pressing shaft. The second pressing device includes a second linear actuator fixed to the frame, a second slide block assembled with the sliding end of the second linear actuator, bushings rotatably mounted on the frame and the same number as the first pressing shafts, and bushings assembled on the second slide block and sliding along the X-axis direction with the first slide block. The second sliding block slides along the X-axis direction with a second pressing shaft. The number of second pressing shafts is the same as the number of bushings. Each second pressing shaft can slide relative to the corresponding bushing along the X-axis direction, passing through it and rotating with the bushing. Each bushing is provided with a second mating structure for mating with a first mating structure on a corresponding first pressing shaft. The rotary driver is located beside the second pressing device along the Z-axis direction and is used to drive the bushing to rotate. When the first pressing device and the second pressing device approach each other to clamp the workpiece, the first mating structure and the second mating structure are mated together. Then, each bushing drives the corresponding second pressing shaft and a first pressing shaft to rotate together under the drive of the rotary driver.

2. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, The first pressing device further includes hollow members that are rotatably mounted on the frame and are the same number as the first pressing shafts. Each first pressing shaft can slide relative to the corresponding hollow member along the X-axis direction. Each first pressing shaft is provided with a radially protruding structure that protrudes radially from the first pressing shaft and is located between the bushing and the hollow member. Each first pressing shaft is fitted with a spring that abuts against the radially protruding structure and the hollow member. The first interlocking structure is located on the hollow member and is located on the side of the radially protruding structure in the radial direction of the first pressing shaft.

3. The multi-workpiece clamping and rotating mechanism according to claim 2, characterized in that, The first slide has a first limiting end face and a second limiting end face arranged spaced apart in the X-axis direction. Each first pressing shaft has a limiting head placed between the first limiting end face and the second limiting end face. The first pressing shaft slides relative to the first slide within a preset range by means of the abutment of the limiting head with the first limiting end face or the second limiting end face. The spring is used to drive the first pressing shaft to slide towards the second pressing shaft until the limiting head abuts with the second limiting end face.

4. The multi-workpiece clamping and rotating mechanism according to claim 2, characterized in that, Each of the hollow components has an anti-rotation channel through which a corresponding first pressure shaft passes, and each first pressure shaft has an anti-rotation profile that mates with the anti-rotation channel.

5. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, Each of the bushings has an anti-rotation channel through which a corresponding second pressure shaft passes and is relatively anti-rotating, and each second pressure shaft has an anti-rotation profile that mates with the anti-rotation channel.

6. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, The first pressure shaft, the second pressure shaft, and the bushing are all in even numbers. Each pair of bushings corresponds to one rotary driver. Each pair of bushings and the corresponding rotary driver are each fixedly fitted with a synchronous pulley. A synchronous belt is simultaneously wound around the synchronous pulleys of each pair of bushings and the corresponding rotary driver.

7. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, The second pressing shaft is provided with a supporting and positioning block for supporting and positioning the workpiece. The supporting and positioning block protrudes from the second pressing shaft in a direction close to the first pressing shaft. The supporting and positioning block has a supporting and positioning cavity facing the first pressing shaft. The supporting and positioning cavity is also arranged to extend outward along the radial direction of the second pressing shaft in a one-sided through-hole arrangement. The second mating structure is located on the side of the supporting and positioning block in the radial direction of the second pressing shaft. The first pressing shaft is provided with a flexible pressing member extending around the axis of the first pressing shaft. The flexible pressing member is aligned with the supporting and positioning cavity in the X-axis direction. The first mating structure is located on the side of the flexible pressing member in the radial direction of the first pressing shaft.

8. The multi-workpiece clamping and rotating mechanism according to claim 7, characterized in that, The flexible top-pressing component has a disc-shaped top-pressing structure facing the supporting positioning cavity.

9. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, The frame has a through cavity arranged along the Z-axis, the first and second interlocking structures are located in the through cavity, and the first top pressure shaft, the second top pressure shaft and the bushing are partially located in the through cavity.

10. The multi-workpiece clamping and rotating mechanism according to claim 1, characterized in that, The first linear actuator and the second linear actuator are each a pneumatic cylinder or a hydraulic cylinder whose cylinder body is fixed on the frame; the rotary actuator is a motor.

Images