A machining tool for large thin plate annular workpieces

Abstract

The present application relates to the field of machining tooling, in particular to a machining tooling for turning over large thin plate ring-shaped workpieces. The machining tooling comprises a turning mechanism, an upper feeding and conveying mechanism and a lower feeding and conveying mechanism arranged at the two ends of the turning mechanism respectively. The turning mechanism comprises a turning frame, a pressing plate, an elastic locking assembly and a reset assembly. Two rotating rings of the turning frame are provided with loading grooves to carry workpieces. The pressing plate is elastically and slidably arranged in the rotating rings and initially extends into the loading grooves. The elastic locking assembly initially locks the pressing plate inside the rotating rings, releases the locking of the pressing plate when the workpiece enters the loading grooves to a preset depth, and restores the locking of the pressing plate after the pressing plate is reset. The reset assembly is configured to reset the pressing plate after the workpiece is turned over to position, thereby releasing the pressing of the workpiece by the pressing plate. The present application can make the pressing plate pop out to press and limit the workpiece after the workpiece enters the loading grooves to a set depth, thereby avoiding the workpiece from being thrown out to cause damage or surface damage due to moving friction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machining tooling, in particular to a machining tooling for adjustable overturning of large thin plate annular workpieces. BACKGROUND

[0002] When machining parts, different processes are often required for the opposite two surfaces of the workpiece. In order to improve machining efficiency, a workpiece that can be overturned needs to be matched.

[0003] Large thin plate workpieces often use windmill type overturning mechanisms to turn over the workpieces. Specifically, a windmill type overturning mechanism has a clamping groove on the circumference of its rotating wheel. The workpiece is installed into the clamping groove and is turned over with the rotation of the rotating wheel. After rotating 180 degrees, the upper and lower surfaces of the workpiece are turned over. Since the rotating wheel generates centrifugal force during rotation, the workpiece is easily thrown outwards, causing damage to the workpiece. In related technologies, the rotation speed of the rotating wheel is often controlled to avoid the workpiece being thrown out. However, when the rotation speed of the rotating wheel is reduced, the production rhythm is slowed down, which significantly reduces the machining efficiency. Moreover, even if the rotating wheel rotates at a low speed, the workpiece will still move outwardly, causing friction between the workpiece and the rotating wheel, which easily scratches the workpiece and affects the surface quality of the workpiece.

[0004] The information disclosed in the background section of this application is only intended to enhance the understanding of the general background of the application and should not be considered as recognition or any form of suggestion that this information forms prior art that is known to those of ordinary skill in the art. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a machining tooling for adjustable overturning of large thin plate annular workpieces to solve the problems of the prior art that the overturned machining tooling easily causes damage to the workpiece and the surface quality of the workpiece is low.

[0006] The machining tooling for adjustable overturning of large thin plate annular workpieces of the present application adopts the following technical scheme: comprising an overturning mechanism and an upper material conveying mechanism and a lower material conveying mechanism respectively arranged at both ends of the overturning mechanism.

[0007] The overturning mechanism comprises:

[0008] The overturning frame comprises an overturning shaft and two rotating rings. The overturning shaft can rotate about its axis, and the axis of the overturning shaft is perpendicular to the conveying direction of the workpiece. The two rotating rings are arranged in the axial direction of the overturning shaft. A plurality of loading grooves are arranged on the rotating rings, which are uniformly distributed in the circumferential direction of the rotating rings and extend in the radial direction of the rotating rings. The loading grooves on the two rotating rings correspond one by one.

[0009] The pressing plate corresponds to the loading groove one by one. The pressing plate is slidingly arranged on the rotating ring and has a first elastic member arranged between the pressing plate and the rotating ring. The first elastic member makes the pressing plate have a tendency to extend into the loading groove.

[0010] The elastic locking assembly is configured to initially lock the pressure plate inside the rotating ring, release the lock on the pressure plate after the workpiece enters a preset depth in the loading groove, and restore the lock on the pressure plate after the pressure plate is reset.

[0011] The reset component is configured to reset the pressure plate after the workpiece is flipped into place, thereby releasing the pressure plate on the workpiece.

[0012] Optionally, the elastic locking assembly includes a sliding shaft and a second elastic element. The sliding shaft is slidably disposed on the rotating ring along the extension direction of the loading groove. The second elastic element is disposed between the sliding shaft and the rotating ring. The second elastic element causes the sliding shaft to tend to move towards the inlet direction of the loading groove. A stop wheel is coaxially fixedly disposed on the sliding shaft. The end of the pressure plate near the sliding shaft is provided with a snap-fit ​​notch adapted to the sliding shaft. The initial snap-fit ​​notch snaps into the sliding shaft and the stop wheel abuts against the pressure plate. The stop wheel prevents the pressure plate from extending into the loading groove.

[0013] Optionally, the reset assembly includes a reset rod and a top block. The top block is fixedly installed and extends horizontally along the conveying direction of the workpiece. The top block is located on one side of the unloading conveying mechanism. The side of the top block facing the corresponding rotating ring is an inclined surface, and the inclined direction is configured to gradually move away from the rotating ring from bottom to top. The reset rod is slidably installed on the rotating ring along the moving direction of the pressure plate and is connected to two corresponding pressure plates. It can slide axially relative to the flipping shaft. A clearance groove is provided inside the rotating ring away from the top block. The reset rod passes through the corresponding pressure plate and can extend into the clearance groove when aligned with it. The bottom of the clearance groove includes a connected inclined surface and a straight surface. Along the moving direction of the pressure plate, the inclined surface is close to the pressure plate, and from the direction close to the pressure plate to the direction away from the pressure plate, the inclined surface gradually moves away from the rotating ring on the opposite side.

[0014] Optionally, the flipping mechanism further includes an adjustment component configured to adjust the degree of compression of the first elastic element before the pressure plate is released, such that the degree of compression of the first elastic element is positively correlated with the diameter of the workpiece.

[0015] Optionally, the adjustment assembly includes an adjustment belt, an adjustment plate, and a slider;

[0016] The slide shaft can rotate around its own axis and one end of the slide shaft is provided with a coil spring, which is used to reset the slide shaft rotation; the adjusting belt connects two slide shafts that are arranged opposite each other and is located in the loading groove. Initially, under the action of the coil spring, both ends of the adjusting belt are wound up to the slide shaft;

[0017] The adjusting plate is located inside the rotating ring and can move along the moving direction of the pressure plate. The first elastic element is located between the adjusting plate and the pressure plate. The slider is slidably located inside the adjusting plate along the sliding direction of the sliding shaft. The end of the sliding shaft away from the coil spring extends into the slider and is screwed to the slider.

[0018] Optionally, a limit wheel is also provided on the slide shaft, and the adjusting belt is located between the stop wheel and the limit wheel.

[0019] Optionally, a spring housing is provided inside the rotating ring. The spring housing can move along the moving direction of the sliding shaft. One end of the sliding shaft extends into the spring housing, and one end of the coil spring is connected to the sliding shaft and the other end is connected to the spring housing.

[0020] Optionally, a second elastic element is located between the spring housing and the rotating ring, and a third elastic element is provided between the slider and the rotating ring.

[0021] Optionally, a ball bearing is provided on the side of the stop wheel that abuts against the pressure plate.

[0022] Optionally, the flipping mechanism also includes support columns and a drive motor. There are two support columns located at both ends of the flipping shaft to support and install the flipping shaft. The drive motor is located on one of the support columns, and the output end of the drive motor is connected to the flipping shaft.

[0023] The beneficial effects of this invention are as follows: The adjustable flipping fixture for large thin-plate ring-shaped workpieces, through the arrangement of a pressure plate, an elastic locking assembly, and a reset assembly, allows the pressure plate to pop out and limit the workpiece after it enters the loading slot on the flipping frame to a set depth. This ensures that even when subjected to significant centrifugal force, the workpiece will not be thrown out or moved as it rotates with the flipping frame, preventing damage to the ring or surface damage due to friction. Simultaneously, because the workpiece is reliably fixed, the production cycle can be appropriately accelerated, improving production efficiency.

[0024] Furthermore, the clamping force of the pressure plate is adjusted by setting an adjustment component, and the clamping force is positively correlated with the diameter of the workpiece, so that the clamping force is adapted to the diameter of the workpiece, ensuring that the workpiece is clamped while preventing damage to the workpiece. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of a machining fixture for an adjustable, flip-over large thin-plate ring workpiece according to the present invention.

[0027] Figure 2 This is a schematic diagram of the flipping mechanism in this invention;

[0028] Figure 3 for Figure 2 The front view;

[0029] Figure 4 for Figure 3Enlarged view of point A in the middle;

[0030] Figure 5 This is a partial structural diagram of the tilting frame;

[0031] Figure 6 for Figure 5 Side view;

[0032] Figure 7 for Figure 5 The front view;

[0033] Figure 8 for Figure 6 BB section view;

[0034] Figure 9 for Figure 7 CC section view;

[0035] Figure 10 for Figure 8 Enlarged view at point D;

[0036] Figure 11 for Figure 9 Enlarged view at point E in the middle;

[0037] Figure 12 for Figure 9 Enlarged view at point F;

[0038] Figure 13 for Figure 9 Enlarged view at point G;

[0039] Figure 14 for Figure 7 A view showing the state of the pressure plate popping up from a different perspective;

[0040] Figure 15 for Figure 14 Middle HH section view;

[0041] Figure 16 for Figure 15 Enlarged view at point I;

[0042] Figure 17 The diagram shows the state of the belt bending.

[0043] In the picture:

[0044] 100. Tilting mechanism;

[0045] 111. Flipping shaft; 112. Rotary ring; 1121. Unit plate; 1122. Connecting plate; 1123. Loading slot; 1124. Clearance slot;

[0046] 120. Pressure plate; 121. First elastic element; 122. Guide post;

[0047] 131. Sliding shaft; 1311. Stop wheel; 1312. Limit wheel; 1313. Ball bearing; 132. Second elastic element;

[0048] 141. Reset rod; 142. Top block;

[0049] 150. Support column;

[0050] 160. Drive motor;

[0051] 171. Adjusting belt; 172. Adjusting plate; 173. Slider; 174. Coil spring; 175. Spring housing; 176. Third elastic element;

[0052] 200. Feeding and conveying mechanism;

[0053] 300. Material feeding and conveying mechanism;

[0054] 400. Workpiece. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] like Figures 1 to 17 As shown in the figure, an adjustable flipping large thin plate ring workpiece processing fixture provided by the present invention can flip the ring-shaped thin plate workpiece 400 up and down. It includes a flipping mechanism 100 and a feeding conveying mechanism 200 and a discharging conveying mechanism 300 respectively disposed at both ends of the flipping mechanism 100. The flipping mechanism 100 can flip the workpiece 400 disposed thereon up and down. The feeding conveying mechanism 200 is used to convey the workpiece 400 to the flipping mechanism 100. The discharging conveying mechanism 300 is used to receive the workpiece 400 after it has been flipped by the flipping mechanism 100 and convey it to the next process.

[0057] The flipping mechanism 100 includes a flipping frame, which includes a flipping shaft 111 and two rotating rings 112. The flipping shaft 111 is rotatable around its own axis, and the axis of the flipping shaft 111 is perpendicular to the conveying direction of the workpiece 400. Figure 1 The middle arrow indicates the conveying direction of workpiece 400; the two rotating rings 112 are spaced apart along the axial direction of the rotating shaft 111, and can rotate synchronously under the drive of the rotating shaft 111.

[0058] The rotating ring 112 is provided with a number of loading slots 1123. The loading slots 1123 are evenly distributed along the circumference of the rotating ring 112 and extend along the radial direction of the rotating ring 112. The loading slots 1123 on the two rotating rings 112 correspond one to one. The workpiece 400 conveyed by the feeding conveyor 200 can enter the loading slot 1123 and be rotated 180 degrees under the action of the rotation of the flipping frame. Then it is conveyed to the next process by the unloading conveyor 300.

[0059] It is understandable that centrifugal force is generated during the rotation of the tilting frame. Under the action of centrifugal force, the workpiece 400 is easily thrown outward, causing damage to the workpiece 400. Related technologies often control the rotation speed of the tilting frame to prevent the workpiece 400 from being thrown out, but this slows down the production cycle and affects efficiency. At the same time, although rotating the tilting frame at a slower speed can reduce the probability of the workpiece 400 being thrown out, the workpiece 400 will inevitably move outward, causing wear between itself and the tilting frame, affecting the surface quality of the workpiece 400.

[0060] In the embodiments provided by the present invention, the flipping mechanism 100 further includes a pressure plate 120, an elastic locking component, and a reset component.

[0061] The pressure plate 120 corresponds one-to-one with the loading groove 1123. The pressure plate 120 is slidably disposed on the rotating ring 112 and a first elastic element 121 is disposed between the pressure plate 120 and the rotating ring 112. The first elastic element 121 makes the pressure plate 120 tend to extend into the loading groove 1123, thereby pressing and limiting the workpiece 400 that enters the loading groove 1123, and preventing the workpiece 400 from moving in the loading groove 1123.

[0062] The elastic locking assembly is configured to initially lock the pressure plate 120 inside the rotating ring 112, thereby allowing the workpiece 400 to smoothly enter the loading groove 1123. The elastic locking assembly is also configured to release the lock on the pressure plate 120 after the workpiece 400 enters the loading groove to a preset depth, so that the pressure plate 120 extends to press and limit the workpiece 400, and to restore the lock on the pressure plate 120 after the pressure plate 120 is reset.

[0063] The reset mechanism is configured to reset the pressure plate 120 after the workpiece 400 is flipped into place, thereby releasing the pressure of the pressure plate 120 on the workpiece 400.

[0064] In this embodiment, the pressure plate 120, the elastic locking assembly, and the reset assembly ensure that after the workpiece 400 enters the loading groove 1123 to a set depth, the pressure plate 120 pops out to press and limit the workpiece 400. This prevents the workpiece 400 from being thrown out or moving, even under significant centrifugal force, as it rotates with the tilting frame. This avoids damage to the workpiece 400 due to being thrown out or surface damage due to friction from movement. Furthermore, since the workpiece 400 is reliably fixed, the production cycle can be appropriately accelerated, improving production efficiency.

[0065] In a further embodiment, the flipping mechanism 100 also includes a support column 150 and a drive motor 160. There are two support columns 150, which are respectively located at both ends of the flipping shaft 111. The support columns 150 can be fixed to the ground and are used to support and install the flipping shaft 111. The drive motor 160 is located on one of the support columns 150. The output end of the drive motor 160 is connected to the flipping shaft 111 to drive the flipping shaft 111 to rotate.

[0066] Furthermore, for ease of manufacturing and assembly, the rotating ring 112 includes a unit plate 1121 and a connecting plate 1122. The connecting plate 1122 is mounted on the flip shaft 111. Multiple unit plates 1121 are provided. Multiple unit plates 1121 are detachably mounted on the connecting plate 1122 along the circumferential direction of the connecting plate 1122. There is a gap between adjacent unit plates 1121 to form the aforementioned loading groove 1123.

[0067] In a further embodiment, the elastic locking assembly includes a sliding shaft 131 and a second elastic member 132. The sliding shaft 131 is slidably disposed on the rotating ring 112 along the extension direction of the loading groove 1123. The second elastic member 132 is disposed between the sliding shaft 131 and the rotating ring 112. The second elastic member 132 causes the sliding shaft 131 to tend to move towards the entrance direction of the loading groove 1123 (that is, outward). A stop wheel 1311 is coaxially fixedly disposed on the sliding shaft 131. The end of the pressure plate 120 near the sliding shaft 131 is provided with a snap-fit ​​notch adapted to the sliding shaft 131. The initial snap-fit ​​notch snaps into the sliding shaft 131 and the stop wheel 1311 abuts against the pressure plate 120. The stop wheel 1311 prevents the pressure plate 120 from extending into the loading groove 1123.

[0068] Reference Figure 9 As shown, the pressure plate 120 along the rotation direction of the rotating ring 112 is located on the rear side of the loading groove 1123. In an embodiment where the rotating ring 112 includes multiple unit plates 1121, the pressure plate 120 along the rotation direction of the rotating ring 112 is disposed on the rear unit plate 1121.

[0069] During use, the workpiece 400 is conveyed to the flipping mechanism 100 via the feeding conveyor 200. Then, the workpiece 400 enters the loading groove 1123, which has been turned to a horizontal position. As the workpiece 400 goes deeper into the loading groove 1123, it contacts the sliding shaft 131 and pushes the sliding shaft 131 to slide away from the entrance of the loading groove 1123 (that is, inward). After the sliding shaft 131 slides inward until the stop wheel 1311 is misaligned with the pressure plate 120, the pressure plate 120 extends into the loading groove 1123 under the elastic force of the first elastic element 121 (preferably, the first elastic element 121 is a compression spring) and presses the workpiece 400 against the front side of the loading groove 1123, thereby pressing and limiting the workpiece 400 to prevent the workpiece 400 from moving outward due to centrifugal force during the rotation of the flipping frame and causing wear, and also to prevent the workpiece 400 from being thrown out of the flipping frame. When the workpiece 400 rotates to approach the unloading conveyor mechanism 300, the reset assembly resets the pressure plate 120, releasing the pressure on the workpiece 400. The slide shaft 131 resets under the action of the second elastic element 132 (preferably, the second elastic element 132 is a compression spring), and the stop wheel 1311 locks the pressure plate 120 again.

[0070] In a further embodiment, the reset assembly includes a reset rod 141 and a top block 142. The top block 142 is fixedly installed (specifically, it can be installed on the support column 150) and extends horizontally along the conveying direction of the workpiece 400. The top block 142 is located on one side of the unloading conveying mechanism 300. The side of the top block 142 pointing towards the corresponding rotating ring 112 is an inclined surface, and the inclined direction is configured to gradually move away from the rotating ring 112 from bottom to top. The reset rod 141 is slidably installed on the rotating ring 112 along the moving direction of the pressure plate 120 and is connected to two corresponding pressure plates 120. It can slide axially relative to the flipping shaft 111. The rotating ring 112 away from the top block 142 is provided with a clearance groove 1124 (see reference). Figure 8 and Figure 10 The reset rod 141 passes through the corresponding pressure plate 120 and can extend into the relief groove 1124 when aligned with it. The bottom of the relief groove 1124 includes a connected inclined surface and a straight surface. Along the moving direction of the pressure plate 120, the inclined surface is close to the pressure plate 120, and from the direction close to the pressure plate 120 to the direction away from the pressure plate 120, the inclined surface gradually moves away from the rotating ring 112 on the opposite side.

[0071] When the workpiece 400 rotates with the tilting frame to a position close to the unloading conveyor mechanism 300, the reset rod 141 contacts the top block 142. Under the blocking action of the top block 142, the reset rod 141 moves away from the workpiece 400 relative to the rotating ring 112 (refer to...). Figure 2 , Figure 2(Moving upwards from a viewing angle) This movement causes the pressure plate 120 to reset inside the rotating ring 112. After the pressure plate 120 resets, the sliding shaft 131 resets under the action of the second elastic element 132, limiting the position of the pressure plate 120. The workpiece 400 falls to the unloading conveyor 300 and is transported to the next process by the unloading conveyor 300. At the same time, during the process of the reset rod 141 driving the pressure plate 120 to reset, under the action of the top block 142, the reset rod 141 can move synchronously away from the top block 142 along the axial direction of the flipping shaft 111, and then pass over the top block 142 and continue to rotate with the rotating ring 112. When the reset rod 141 rotates with the rotating ring 112 to the next loading, it is driven by the pressure plate 120 and moves towards the top block 142 under the action of the inclined surface of the relief groove 1124, so that the pressure plate 120 can be reset next time.

[0072] In a further embodiment, the flipping mechanism 100 further includes an adjustment component configured to adjust the degree of compression of the first elastic element 121 before the pressure plate 120 is released, and to make the degree of compression of the first elastic element 121 positively correlated with the diameter of the workpiece 400. That is, the larger the diameter of the workpiece 400, the greater the degree of compression of the first elastic element 121, and the relatively greater the top pressure on the workpiece 400 after the pressure plate 120 is released. Conversely, the smaller the diameter of the workpiece 400, the relatively smaller the top pressure on the workpiece 400 after the pressure plate 120 is released. This ensures that the top pressure of the pressure plate 120 on the workpiece 400 is matched with the diameter of the workpiece 400, ensuring that the workpiece 400 is pressed tightly while preventing damage to the workpiece 400.

[0073] In a further embodiment, the adjustment assembly includes an adjustment belt 171, an adjustment plate 172, and a slider 173.

[0074] The slide shaft 131 is rotatable around its own axis and a coil spring 174 is provided at one end of the slide shaft 131. The coil spring 174 is used to reset the slide shaft 131 by rotation. To facilitate the installation of the coil spring 174, a spring shell 175 is provided inside the rotating ring 112. The spring shell 175 is movable along the moving direction of the slide shaft 131. One end of the slide shaft 131 extends into the spring shell 175. One end of the coil spring 174 is connected to the slide shaft 131 and the other end is connected to the spring shell 175.

[0075] The adjusting belt 171 connects two oppositely arranged sliding shafts 131 and is located in the loading groove 1123. Initially, under the action of the coil spring 174, both ends of the adjusting belt 171 are wound up to the sliding shafts 131.

[0076] An adjusting plate 172 is disposed within a rotating ring 112, and a first elastic element 121 is disposed between the adjusting plate 172 and the pressure plate 120. The adjusting plate 172 can move along the direction of movement of the pressure plate 120, thereby changing the compression amount of the first elastic element 121.

[0077] The slider 173 is slidably disposed in the adjusting plate 172 along the sliding direction of the sliding shaft 131. The end of the sliding shaft 131 away from the coil spring 174 extends into the slider 173 and is screwed to the slider 173.

[0078] Furthermore, for ease of installation, the two ends of the sliding shaft 131 are respectively disposed on both sides of the loading groove 1123. In the embodiment where the rotating ring 112 includes multiple unit plates 1121, the sliding shaft 131 is installed on two circumferentially adjacent unit plates 1121 forming the loading groove 1123; wherein, the spring shell 175 is installed on the unit plate 1121 located on the front side along the rotation direction of the rotating ring 112.

[0079] To make the winding position of the adjusting belt 171 more reliable, a limit wheel 1312 is also provided on the sliding shaft 131, and the adjusting belt 171 is located between the stop wheel 1311 and the limit wheel 1312.

[0080] To facilitate the movement and reset of the slide shaft 131, a second elastic element 132 is located between the spring housing 175 and the rotating ring 112, and a third elastic element 176 is provided between the slider 173 and the rotating ring 112. The third elastic element 176 and the second elastic element 132 work together to make the movement of the slide shaft 131 more reliable. In a preferred embodiment of the present invention, the third elastic element 176 is a compression spring.

[0081] Furthermore, a guide post 122 is provided on the pressure plate 120. The guide post 122 is slidably inserted into the adjusting plate 172. The first elastic member 121 is sleeved on the outside of the guide post 122 and connected to the pressure plate 120 and the adjusting plate 172.

[0082] Furthermore, a ball bearing 1313 is provided on the side of the stop wheel 1311 that abuts against the pressure plate 120, so as to reduce the friction between the stop wheel 1311 and the pressure plate 120 when the slide shaft 131 rotates.

[0083] Initially, the first elastic element 121 is in a state of extreme compression, with maximum elastic force. During the feeding process, after the workpiece 400 enters the loading groove 1123, the workpiece 400 first contacts and pushes against the adjusting belt 171. Under the continuous conveying action of the feeding conveyor mechanism 200, the workpiece 400 bends and stretches the adjusting belt 171, pulling it out from the sliding shaft 131 and causing the sliding shaft 131 to rotate. Because the sliding shaft 131 is screwed to the slider 173, the rotation of the sliding shaft 131 drives the slider 173 to move. The slider 173 drives the adjusting plate 172 to move away from the pressure plate 120, causing the first elastic element 121 to release a certain length, and the workpiece 400... The larger the diameter of the workpiece 400, the smaller the arc formed by the push adjustment belt 171, the smaller the rotation angle of the slide shaft 131, the smaller the distance the adjustment plate 172 moves, the less the first elastic element 121 is released, the greater the remaining elastic force, and the greater the top pressure on the workpiece 400 after the pressure plate 120 is released. Conversely, the smaller the diameter of the workpiece 400, the larger the arc formed by the push adjustment belt 171, the greater the rotation angle of the slide shaft 131, the greater the distance the adjustment plate 172 moves, the more the first elastic element 121 is released, the smaller the remaining elastic force, and the smaller the top pressure on the workpiece 400 after the pressure plate 120 is released.

[0084] In a further embodiment, both the loading conveyor 200 and the unloading conveyor 300 employ belt conveyors to transport the workpiece 400.

[0085] The feeding conveyor mechanism 200 can be configured to include an upper conveyor belt and a lower conveyor belt. The workpiece 400 is clamped between the upper and lower conveyor belts. The upper and lower conveyor belts can provide a certain clamping force for the workpiece 400, allowing the workpiece 400 to overcome the elastic force of the coil spring 174 and drive the slide shaft 131 to rotate. At the same time, it can overcome the elastic force of the second elastic element 132 and the third elastic element 176 to push the slide shaft 131 to move. Furthermore, the upper conveyor belt of the feeding conveyor mechanism 200 can be adjusted in position along the conveying direction. After the pressure plate 120 pops out and presses the workpiece 400, the upper conveyor belt can be appropriately moved backward to detach from the workpiece 400 and avoid affecting the flipping frame. It should be further noted that the coil spring 174, the second elastic element 132, and the third elastic element 176 are all lightweight springs to achieve sensitive triggering.

[0086] Naturally, in other embodiments, the loading conveyor 200 can also be configured to have a conveyor belt, just like the unloading conveyor 300. This embodiment is suitable for heavy workpieces 400, which rely on the friction between the workpiece 400 and the conveyor belt to unlock the pressure plate 120.

[0087] Based on the above embodiments, the usage principle and working process of the present invention are as follows:

[0088] When using the device, the workpiece 400 must first be placed on the feeding conveyor 200. The feeding conveyor 200 transports the workpiece 400 to the tilting mechanism 100. The tilting mechanism 100 rotates intermittently, and the workpiece 400 enters the loading groove 1123 on the rotating ring 112. After being tilted by the rotating ring 112, it falls onto the unloading conveyor 300 and is then transported away by the unloading conveyor 300. The working direction is as follows: Figure 1 The middle arrow indicates the direction. It should be noted that the tilting speed of the tilting mechanism 100 and the operating speed of the feeding mechanism 200 conform to the following formula: ;

[0089] In the formula,

[0090] V1: The operating speed of the feeding mechanism 200;

[0091] L: The distance that workpiece 400 moves on the feeding mechanism 200;

[0092] t: The time required for the tilting frame to rotate from one loading slot 1123 to another loading slot 1123;

[0093] t1: The time the tilting frame pauses;

[0094] θ: The central angle between two adjacent loading slots in radians;

[0095] r: radius of the tilting frame;

[0096] V2: Linear velocity of the tilting frame rotation;

[0097] in, =t.

[0098] To facilitate implementation, an even number of loading slots 1123 are provided. Preferably, six loading slots 1123 are provided, so that when one loading slot 1123 is being loaded, another loading slot 1123 is being unloaded, facilitating cycle control. Before the workpiece 400 enters the loading slot 1123 on the rotating ring 112, the various structural states within the rotating ring 112 are as follows: Figure 9 As shown. At this time, the first elastic element 121 is in the ultimate compression state, with the elastic force at its maximum, while the adjusting belt 171 is in a straight state.

[0099] When the tilting frame rotates until the loading slot 1123 is aligned with the feeding conveyor 200, the tilting frame stops rotating for a set time, allowing the workpiece 400 to enter the loading slot 1123. After entering the loading slot 1123, the workpiece 400 continues to move into the loading slot 1123 under the action of the feeding conveyor 200, and gradually comes into contact with the adjusting belt 171. Then, due to the continuous conveying action of the feeding conveyor 200, the workpiece 400 continues to move inward and pushes the adjusting belt 171, causing the adjusting belt 171 to bend and lengthen. During the lengthening process of the adjusting belt 171, it drives the sliding shaft 131 to rotate. During the rotation of the sliding shaft 131, it drives the slider 173 to move away from the pressure plate 120, which in turn drives the adjusting plate 172 to move away from the pressure plate 120, causing the first elastic element 121 to release a certain length until the workpiece 400 contacts the sliding shaft 131, at which point the adjusting belt 171 stops lengthening and the sliding shaft 131 stops rotating. The larger the diameter of workpiece 400, the smaller its curvature, the smaller the arc formed by the bending of the push-adjusting belt 171, the smaller the length pulled out by the adjusting belt 171, the smaller the rotation angle of the sliding shaft 131, the smaller the distance the adjusting plate 172 moves, the smaller the length released by the first elastic element 121, and the greater the remaining elastic force of the first elastic element 121; conversely, the smaller the diameter of workpiece 400, the larger its curvature, the larger the arc formed by the bending of the push-adjusting belt 171, the greater the length pulled out by the adjusting belt 171, the larger the rotation angle of the sliding shaft 131, the greater the distance the adjusting plate 172 moves, the greater the length released by the first elastic element 121, and the smaller the remaining elastic force of the first elastic element 121; then workpiece 400 continues to move inward ( Figure 9 Move from center to left, and drive the sliding shaft 131 to move inward until it is completely disengaged from the pressure plate 120. At this time, the pressure plate 120 is ejected under the elastic force of the first elastic element 121, clamping the workpiece 400, as shown in the state. Figure 15 and Figure 16 As shown.

[0100] Once the workpiece 400 is clamped, it will not be thrown out or slide outwards even under the large centrifugal force from the rotation of the rotating ring 112. Therefore, the production cycle can be appropriately accelerated to improve production efficiency.

[0101] Afterwards, the tilting frame continues to rotate. When the workpiece 400 rotates with the rotating ring 112 to a position close to the unloading conveyor mechanism 300, the reset rod 141 on the rotating ring 112 contacts the top block 142. As the rotating ring 112 rotates, the reset rod 141 moves away from the workpiece 400 and away from the top block 142 under the stopping action of the top block 142. Figure 1 , Figure 7(From the upper left of the viewing angle), because the reset rod 141 passes through the pressure plate 120, the movement of the reset rod 141 causes the pressure plate 120 to move away from the workpiece 400 and reset, and the pressure plate 120 gradually retracts into the rotating ring 112. As the pressure plate 120 resets, the sliding shaft 131 returns to its initial position under the action of the coil spring 174, the second elastic element 132 and the third elastic element 176, and re-locks the pressure plate 120, limiting the pressure plate 120. At the same time, the workpiece 400 is ejected outward under the reset action of the sliding shaft 131 and falls onto the unloading conveyor mechanism 300, where it is carried away by the unloading conveyor mechanism 300.

[0102] When the pressure plate 120 clamps the workpiece 400, the larger the diameter of the workpiece 400, the less the first elastic element 121 is released, and the greater the clamping force provided by the first elastic element 121 to the pressure plate 120, resulting in a tighter clamping of the workpiece 400. Conversely, the smaller the diameter of the workpiece 400, the more the first elastic element 121 is released, and the smaller the clamping force of the pressure plate 120 on the workpiece 400. Therefore, a suitable clamping force can be matched according to the size of the workpiece 400. At the same time, if the diameter of the workpiece 400 is the same, the thicker the workpiece 400, the less the pressure block moves towards the workpiece 400, the greater the elastic force provided by the first elastic element 121 to the pressure block, and the tighter the pressure plate 120 clamps the workpiece 400. Therefore, a suitable clamping force can be matched according to the thickness of the workpiece 400.

[0103] 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 machining fixture for a large, thin-plate ring-shaped workpiece that can be adjusted and flipped, characterized in that, It includes a tilting mechanism and a feeding conveyor and a discharging conveyor respectively located at both ends of the tilting mechanism; The flipping mechanism includes: The tilting frame includes a tilting shaft and two rotating rings. The tilting shaft can rotate around its own axis, and the axis of the tilting shaft is perpendicular to the conveying direction of the workpiece. The two rotating rings are spaced apart on the tilting shaft along the axial direction. Several loading slots are provided on the rotating rings. The loading slots are evenly distributed along the circumference of the rotating rings and extend along the radial direction of the rotating rings. The loading slots on the two rotating rings correspond one to one. The pressure plate corresponds to the loading groove one by one. The pressure plate is slidably disposed on the rotating ring and a first elastic element is disposed between the pressure plate and the rotating ring. The first elastic element makes the pressure plate tend to extend into the loading groove. The elastic locking assembly is configured to initially lock the pressure plate inside the rotating ring, release the lock on the pressure plate after the workpiece enters a preset depth in the loading groove, and restore the lock on the pressure plate after the pressure plate is reset. The reset component is configured to reset the pressure plate after the workpiece is flipped into place, thereby releasing the pressure plate on the workpiece. The elastic locking assembly includes a sliding shaft and a second elastic element. The sliding shaft is slidably disposed on the rotating ring along the extension direction of the loading groove. The second elastic element is disposed between the sliding shaft and the rotating ring. The second elastic element causes the sliding shaft to tend to move towards the inlet direction of the loading groove. A stop wheel is coaxially fixedly disposed on the sliding shaft. The end of the pressure plate near the sliding shaft is provided with a snap-fit ​​notch adapted to the sliding shaft. Initially, the snap-fit ​​notch snaps into the sliding shaft and the stop wheel abuts against the pressure plate. The stop wheel prevents the pressure plate from extending into the loading groove. The flipping mechanism also includes an adjustment component configured to adjust the degree of compression of the first elastic element before the pressure plate is released, and such that the degree of compression of the first elastic element is positively correlated with the diameter of the workpiece. The adjustment assembly includes an adjustment belt, an adjustment plate, and a slider; the slide shaft is rotatable around its own axis and one end of the slide shaft is provided with a coil spring, which is used to reset the slide shaft; the adjustment belt connects two slide shafts arranged opposite each other and is located in the loading groove. Initially, under the action of the coil spring, both ends of the adjustment belt are wound up to the slide shaft; the adjustment plate is located in the rotating ring and can move along the moving direction of the pressure plate, and the first elastic element is located between the adjustment plate and the pressure plate; the slider is slidably located in the adjustment plate along the sliding direction of the slide shaft, and the end of the slide shaft away from the coil spring extends into the slider and is screwed to the slider.

2. The machining fixture for an adjustable, flip-over large thin-plate ring-shaped workpiece according to claim 1, characterized in that, The reset assembly includes a reset rod and a top block. The top block is fixedly installed and extends horizontally along the conveying direction of the workpiece. The top block is located on one side of the unloading conveying mechanism. The side of the top block facing the corresponding rotating ring is an inclined surface, and the inclined direction is configured to gradually move away from the rotating ring from bottom to top. The reset rod is slidably installed on the rotating ring along the moving direction of the pressure plate and is connected to two corresponding pressure plates. It can slide axially relative to the flipping shaft. A clearance groove is provided inside the rotating ring away from the top block. The reset rod passes through the corresponding pressure plate and can extend into the clearance groove when aligned with it. The bottom of the clearance groove includes a connected inclined surface and a straight surface. Along the moving direction of the pressure plate, the inclined surface approaches the pressure plate, and from the direction of approaching the pressure plate to moving away from the pressure plate, the inclined surface gradually moves away from the rotating ring on the opposite side.

3. The machining fixture for an adjustable, flip-over large thin-plate ring-shaped workpiece according to claim 1, characterized in that, The sliding shaft is also equipped with a limit wheel, and the adjusting belt is located between the stop wheel and the limit wheel.

4. The machining fixture for an adjustable, flip-over large thin-plate ring-shaped workpiece according to claim 1, characterized in that, A spring housing is installed inside the rotating ring. The spring housing can move along the direction of movement of the sliding shaft. One end of the sliding shaft extends into the spring housing. One end of the coil spring is connected to the sliding shaft and the other end is connected to the spring housing.

5. The machining fixture for an adjustable, flip-over large thin-plate ring workpiece according to claim 4, characterized in that, The second elastic element is located between the spring housing and the rotating ring, and the third elastic element is provided between the slider and the rotating ring.

6. The machining fixture for an adjustable, flip-over large thin-plate ring-shaped workpiece according to claim 1, characterized in that, The side of the stop wheel that abuts against the pressure plate is equipped with a ball bearing.

7. The machining fixture for an adjustable, flip-over large thin-plate ring-shaped workpiece according to claim 1, characterized in that, The flipping mechanism also includes support columns and a drive motor. There are two support columns, which are located at both ends of the flipping shaft to support and install the flipping shaft. The drive motor is located on one of the support columns, and the output end of the drive motor is connected to the flipping shaft.

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