Locking mechanism for rotary trimmer

Abstract

The application discloses a locking mechanism of a rotary trimming machine, which comprises a locking seat, a plurality of locking blocks are uniformly distributed in the circumferential direction of the inner side of the locking seat, the circumferential direction of the locking blocks connected with each other is connected through a first elastic member, the locking blocks are located on the outer side of a workpiece, a guide plate is arranged in the axial direction of the locking seat, the lower end of the guide plate is matched with a guide groove on the locking block and extends into the guide groove, a locking screw is movably connected to the locking seat, the lower end of the locking screw is tightly connected with the locking block, the locking block and the locking seat are relatively moved through the locking screw, and the locking seat moves up and down relative to the locking block, so that the locking block moves back and forth along the radial direction to lock or release the workpiece. Through the above mode, the locking mechanism of the rotary trimming machine can lock the workpiece, ensures that the workpiece does not shake during side cutting, is accurately positioned and has a simple structure.

Description

Technical Field

[0001] This invention relates to the field of wheel hub processing, and in particular to a locking mechanism for a wheel hub rotary edge trimming machine. Background Technology

[0002] The hub, also known as the wheel rim, is the connecting component that fixes the blades to the rotating shaft and is also the main load-bearing component of the wheel.

[0003] After hot forging, wheel hubs need to be fixed on a machine tool for trimming and punching. The general procedure is to trim the workpiece first, followed by punching. This requires two sets of molds, making the process complex and costly. Currently, domestic wheel hub trimming machines are typically imported. Imported wheel hub trimming machines are extremely expensive, have complex structures, are difficult to operate, and incur high maintenance costs, thus failing to meet the needs of businesses. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a locking mechanism for a rotary edge trimming machine, which can lock the workpiece, ensure that the workpiece will not shake during side cutting, and has accurate positioning and simple structure.

[0005] To solve the above-mentioned technical problems, the present invention provides a locking mechanism for a rotary trimming machine, including a locking seat. Multiple locking blocks are evenly distributed circumferentially on the inner side of the locking seat. The connected locking blocks are circumferentially connected by a first elastic element, and the locking blocks are located outside the workpiece. A guide plate passes through the axial direction of the locking seat, and the lower end of the guide plate extends into a guide groove on the locking block. A locking screw is also movably connected to the locking seat, and the lower end of the locking screw is fastened to the locking block. The locking block and the locking seat move relative to each other through the locking screw. The locking seat moves up and down relative to the locking block, causing the locking block to reciprocate radially to lock or release the workpiece.

[0006] In a preferred embodiment of the present invention, the inner side of the locking block has a locking surface that cooperates with the workpiece, and the outer side is an inclined contact surface. The locking seat has a pressing surface that cooperates with the contact surface. The locking seat moves downward to make the pressing surface fit with the contact surface to push the locking block to move radially inward. The locking seat moves upward to separate the pressing surface from the contact surface. The locking block is pushed radially outward by the first elastic element.

[0007] In a preferred embodiment of the present invention, the locking seat is provided with a second elastic element, the lower end of which is connected to the locking block.

[0008] In a preferred embodiment of the present invention, the locking seat is connected to each locking block by two guide plates and two locking screws.

[0009] In a preferred embodiment of the present invention, adjacent locking blocks are connected by two parallel first elastic members.

[0010] In a preferred embodiment of the present invention, the locking seat is further provided with a connecting plate, a plurality of third elastic members are installed on the connecting plate, an upper template is provided above the locking seat and the connecting plate, and the upper end of the third elastic member is connected to the upper template.

[0011] In a preferred embodiment of the present invention, the first elastic element, the second elastic element, and the third elastic element are all springs.

[0012] The beneficial effects of the present invention are: the locking mechanism of the rotary edge trimming machine of the present invention can achieve the purpose of locking the workpiece, ensuring that the workpiece will not shake during side cutting, with accurate positioning and simple structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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, wherein:

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the rotary edge trimming machine of the present invention;

[0015] Figure 2 yes Figure 1 Main view

[0016] Figure 3 yes Figure 1 Top view;

[0017] Figure 4 yes Figure 1 A schematic diagram of a partial structure;

[0018] Figure 5 yes Figure 4 Top view;

[0019] Figure 6 yes Figure 1 A schematic diagram of a partial structure;

[0020] Figure 7 yes Figure 6 A schematic diagram of a partial structure;

[0021] Figure 8 yes Figure 1 A schematic diagram of a partial structure;

[0022] Figure 9 yes Figure 8 The main view;

[0023] Figure 10 yes Figure 9 A schematic diagram of the local structure;

[0024] The components in the attached diagram are labeled as follows: 1. Lower die assembly; 11. Lower die base; 1101. Slide groove; 1102. Limiting block; 12. Die cavity mechanism; 1201. Mounting groove; 1202. Fourth elastic element; 1203. Clamping tongue; 13. Trimming mechanism; 1301. Slider; 1302. Punch; 1303. Elastic reset element; 1304. Pushing inclined surface; 14. Workpiece; 15. Rotary positioning mechanism; 1501. Drive head; 1502. Transmission mechanism; 1503. Transmission gear; 1504. Limiting groove; 1505. 1506 Guide seat, 1507 Guide bar, 1508 Guide rail, 1509 Toothed surface, 1509 Limiting post, 2 Upper mold assembly, 21 Upper template, 2101 Upper insert, 22 Locking mechanism, 2201 Locking seat, 2202 Locking block, 2203 First elastic element, 2204 Guide plate, 2205 Guide groove, 2206 Locking screw, 2207 Locking surface, 2208 Contact surface, 2209 Pressing surface, 2210 Second elastic element, 2211 Connecting plate, 2212 Third elastic element. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0026] Please see Figures 1 to 3 A rotary trimming machine includes a lower die assembly 1 and an upper die assembly 2. The upper die assembly 2 is movably connected to the lower die assembly 1. The lower die assembly 1 includes a lower die base 11. A die cavity mechanism 12 and a plurality of trimming mechanisms 13 are installed on the lower die base 11. A workpiece 14 is sleeved on the die cavity mechanism 12. The trimming mechanisms 13 are evenly arranged around the outside of the workpiece 14.

[0027] See Figure 4 and Figure 5The trimming mechanism 13 includes a slider 1301, with a punch 1302 for the stamping workpiece 14 connected to its front end. The slider 1301 is slidably disposed within a groove 1101 on the lower die base 11. An upper insert 2101 is provided on the upper die plate 21, and the upper insert 2101 contacts the slider 1301 to push the slider 1301 forward. An elastic reset member 1303 is also installed between the lower die base 11 and the slider 1301. When the upper insert 2101 separates from the slider 1301, the elastic reset member 1303 causes the slider 1301 to reset. A matching pushing inclined surface 1304 is provided between the upper end face of the slider 1301 and the lower end face of the lower insert 2101. A limiting block 1102 for limiting the position of the slider 1301 is also provided at the rear end of the groove 1101.

[0028] Additionally, see Figures 8 to 10 The upper mold assembly 2 includes an upper mold plate 21 and a locking mechanism 22 mounted on the upper mold plate 21. The locking mechanism 22 includes a locking seat 2201, and a plurality of locking blocks 2202 are evenly distributed circumferentially on the inner side of the locking seat 2201. The connected locking blocks 2202 are connected circumferentially by a first elastic member 2203, and the locking blocks 2202 are located on the outer side of the workpiece 14. A guide plate 2204 is axially inserted through the locking seat 2201. The lower end extends into the guide groove 2205 on the locking block 2202. The locking seat 2201 is also movably connected with a locking screw 2206. The lower end of the locking screw 2206 is fastened to the locking block 2202. The locking block 2202 and the locking seat 2201 move relative to each other through the locking screw 2206. The locking seat 2201 moves up and down relative to the locking block 2202, causing the locking block 2202 to move back and forth along the radial direction to lock or release the workpiece 14.

[0029] The inner side of the locking block 2202 has a locking surface 2207 that mates with the workpiece 14, and the outer side has an inclined contact surface 2208. The locking seat 2201 has a pressing surface 2209 that mates with the contact surface 2208. The locking seat 2201 moves downward so that the pressing surface 2209 fits against the contact surface 2207 to push the locking block 2202 to move radially inward. The locking seat 2201 moves upward so that the pressing surface 2209 separates from the contact surface 2207. The locking block 2202 is pushed radially outward by the first elastic element 2203.

[0030] The locking seat 2201 is provided with a second elastic element 2210, the lower end of which is connected to the locking block 2202. The locking seat 2201 is connected to each locking block 2202 via two guide plates 2204 and two locking screws 2206. Adjacent locking blocks 2202 are connected by two parallel first elastic elements 2203. The locking seat 2201 also has a connecting plate 2211 inside, on which multiple third elastic elements 2212 are mounted, the upper ends of which are connected to the upper template 21. The first elastic elements 2203, second elastic elements 2210, and third elastic elements 2212 are all springs, disc springs, or similar elastic components.

[0031] The upper template 21 drives the locking mechanism 22 to move downward. In the initial state, due to the tension of the first elastic element 2203, the locking blocks 2202 are separated, and the workpiece 14 enters the inner side of the locking block 2202. The upper template 21 moves downward, causing the locking seat 2201 to move downward. The locking seat 2201 begins to press down on the locking block 2202. The pressing surface 2209 of the locking seat 2201 contacts the contact surface 2208 of the locking block 2202. Under the guidance of the guide plate 220, the locking seat 2201 presses down on the locking block 2202. 02. The locking block 2202 retracts and moves towards the workpiece 14 until it presses against the workpiece 14. Simultaneously, the upper insert 2101 on the upper template 21 moves downward, contacts the slider 1301, and pushes the slider 1301 forward. The punch 1302 on the slider 1301 processes the workpiece 14. After one processing cycle, the upper template 21 moves upward, causing the locking seat 2201 to disengage from the locking block 2202. The locking block 2202 expands outward and disengages from the workpiece 14. Through the release of the elastic force between the locking blocks 2202, the gap between them is opened, allowing the workpiece to enter the locking area. Then, the locking seat 2201 moves downward and locks the workpiece 14 through the locking block 2202, thus ensuring that the workpiece 14 does not wobble during side cutting and that the workpiece 14 is accurately positioned.

[0032] Additionally, please see Figure 6 and Figure 7The lower mold assembly 1 is also equipped with a rotary positioning mechanism 15, which includes a drive head 1501. A transmission mechanism 1502 is mounted on the drive head 1501, and a transmission gear 1503 is meshed on the transmission mechanism 1502. The drive head 1501 drives the transmission mechanism 1502 to move back and forth, thereby driving the transmission gear 1503 to rotate back and forth. The inner ring of the transmission gear 1503 has multiple circumferentially arranged limiting grooves 1504. The die machine 12 is provided with a latch 1203 connected to the fourth elastic element 1202 in the radial direction. The latch 1203 is pushed into the limiting groove 1504 by the fourth elastic element 1202. The transmission mechanism drives the transmission gear 1503 to rotate back and forth, causing the latch 1203 to rotate with the transmission gear 1503 or to disengage the latch 1203 from the limiting groove.

[0033] The bottom surface of the die cavity mechanism 12 is provided with a radially arranged mounting groove 1201. A fourth elastic element 1202 and a latch 1203 are disposed within the mounting groove 1201. One end of the fourth elastic element 1202 is connected to the center of the die cavity mechanism 12, and the other end is connected to the latch 1203. The cross-section of the latch 1203 engaging with the limiting groove 1504 is wedge-shaped. The fourth elastic element is a spring, disc spring, or telescopic push rod.

[0034] The transmission mechanism 1502 includes a guide seat 1505, on which a guide bar 1506 connected to the drive head 1501 is provided. The guide bar is mounted on a guide rail 1507 and is driven by the drive head to reciprocate. The guide bar 1506 has a toothed surface 1508, which meshes with a transmission gear 1503. A limiting post 1509 is provided at the front end of the rack 1506. The drive head 1501 is a cylinder, a hydraulic cylinder, or an electric push rod.

[0035] When the drive head 1501 operates, it drives the guide bar 1506 to move forward. As the tooth surface 1508 of the guide bar 1506 moves forward, it drives the transmission gear 1503 to rotate counterclockwise. The fourth elastic element 1202 pushes the latch 1203 into the limiting groove 1504 of the inner ring of the transmission gear 1503 in the radial direction of the die mechanism 12. At the same time, the die mechanism 12 starts to rotate synchronously under the drive of the transmission gear 1503. After the guide bar 1506 moves forward to the position of the limiting post 1509, it stops rotating. Then, the drive head 1501 begins to retract, synchronously driving the guide bar 1506 to retract as well. The transmission gear 1503 begins to rotate in the opposite direction. After the transmission gear 1503 rotates in the opposite direction, because the cross-section of the latch 1203 engaging with the limiting groove 1504 is wedge-shaped, the latch 1203 disengages from the limiting groove 1504 under the push of the transmission gear 1503. At this time, the die mechanism 12 does not rotate with the transmission gear 1503, and the guide bar 1506 retracts to its initial position, completing one rotation of the workpiece. When the workpiece 14 needs to rotate again, the above steps are repeated. The return force of the cylinder and the return distance of the latch are unloaded by the internal ratchet. This achieves the purpose of the gear only being able to move forward in an infinitely cyclical manner. The rotation angle of the workpiece 14 is adjusted accurately by the limiting post.

[0036] The specific working principle of the rotary trimming machine of this invention is as follows: The die mechanism 12 drives the workpiece 14 to the processing station. The drive head 1501 works, driving the guide bar 1506 to move forward. As the tooth surface 1508 of the guide bar 1506 moves forward, it drives the transmission gear 1503 to rotate counterclockwise. In the radial direction of the die mechanism 12, the fourth elastic element 1202 pushes the latch 1203 into the limiting groove 1504 of the inner ring of the transmission gear 1503. At the same time, the die mechanism 12 begins to rotate synchronously under the drive of the transmission gear 1503. After 1506 moves forward to the position of the limiting post 1509, it stops rotating. Then, the drive head 1501 begins to retract, synchronously driving the guide bar 1506 to retract. The transmission gear 1503 begins to rotate in the opposite direction. After the transmission gear 1503 rotates in the opposite direction, because the cross-section of the latch 1203 and the locking part of the limiting groove 1504 is wedge-shaped, the latch 1203 is pushed out of the limiting groove 1504 by the transmission gear 1503. At this time, the die mechanism 12 does not rotate with the transmission gear 1503, and the guide bar 1506 retracts to the initial position. Then, due to the tension of the first elastic element 2203, the locking blocks 2202 are separated, and the workpiece 14 enters the inner side of the locking block 2202. The upper template 21 moves downward, driving the locking seat 2201 downward. The locking seat 2201 begins to press down on the locking block 2202. The pressing surface 2209 of the locking seat 2201 contacts the contact surface 2208 of the locking block. Under the guidance of the guide plate 2204, the locking seat 2201 presses down on the locking block 2202, causing the locking block 2202 to retract and move towards the workpiece 14 until the locking block 2202 presses the workpiece 14. At the same time, the upper insert 2101 on the upper template 21 moves downward. The upper insert 2101 contacts the slider 1301 and pushes the slider 1301 forward. The punch 1302 on the slider 1301 processes the workpiece 14, completing one processing cycle. Next, the upper template 21 moves upward, causing the locking seat 2201 to disengage from the locking block 2202. The locking block 2202 expands outward and disengages from the workpiece 14. Then, the working process of the rotation positioning mechanism 15 is repeated, causing the workpiece 14 to rotate. The workpiece 14 is then processed again by the movement of the locking mechanism 22 until the processing is completed.

[0037] Unlike existing technologies, the locking mechanism of the rotary edge trimming machine of this invention can lock the workpiece, ensuring that the workpiece will not shake during side cutting, with precise positioning and simple structure.

[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A locking mechanism for a rotary trimming machine, characterized in that, The device includes a locking seat, on which multiple locking blocks are evenly distributed circumferentially. The connected locking blocks are circumferentially linked by a first elastic element, and the locking blocks are located outside the workpiece. A guide plate passes through the locking seat axially, and the lower end of the guide plate extends into a guide groove on the locking block. A locking screw is also movably connected to the locking seat, and the lower end of the locking screw is fastened to the locking block. The locking block and the locking seat move relative to each other via the locking screw. The locking seat moves up and down relative to the locking block, causing the locking block to reciprocate radially to lock or release the workpiece. The locking block has an inner locking surface that mates with the workpiece, and an outer inclined contact surface. The locking seat has a pressing surface that mates with the contact surface. The locking seat moves downwards to bring the pressing surface into contact with the contact surface, thus pushing the locking block radially inwards. The locking seat moves upwards to separate the pressing surface from the contact surface, and the locking block is then pushed radially outwards by the first elastic element. The locking seat is provided with a second elastic element, the lower end of which is connected to the locking block. The locking seat is connected to each locking block via two guide plates and two locking screws. The adjacent locking blocks are connected by two parallel first elastic members; The locking seat is also provided with a connecting plate inside, and a plurality of third elastic elements are installed on the connecting plate. An upper template is provided above the locking seat and the connecting plate, and the upper end of the third elastic elements is connected to the upper template. The first elastic element, the second elastic element, and the third elastic element are all springs.

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