A special clamping device for end cover

Abstract

The application relates to a special clamping device for an end cover, which supports the annular flange of the end cover through a supporting ring, avoids deformation of the workpiece in suspension, simultaneously adopts a linkage type radial clamping and axial compression composite structure, drives three groups of translational clamping blocks to synchronously clamp the outer periphery of the end cover in the radial direction, cooperates with a transmission device to link and swing a clamping arm to press down the annular flange, realizes three-way positioning in the radial direction, the axial direction and the end surface, effectively prevents the problems of workpiece deviation, movement and loosening, guarantees the machining precision of the upper and lower end surfaces of the end cover, reduces the waste rate, the device is provided with a rotatable supporting circular plate, the workpiece can be rotated as a whole after being clamped and fixed, the upper and lower end surface machining can be sequentially completed without disassembly and secondary clamping, the process is simplified, and the machining efficiency is improved, the equipment adopts a single-drive linkage structure, can synchronously complete the clamping and compression actions, is compact in structure, simple in operation, strong in linkage, is specially adapted to high-precision machining of the end cover with the annular flange, effectively makes up for the short board of traditional tooling, and is excellent in practicability and popularization.

Description

Technical Field

[0001] This invention relates to the field of clamping device technology, and in particular to a clamping device specifically for end caps. Background Technology

[0002] End caps are core basic components in fields such as mechanical equipment and hydraulic parts. They generally have an annular flange structure on their outer side, which mainly serves the functions of positioning, sealing, and assembly limiting. During the production and processing of end caps, the upper and lower end faces need to be machined. The machining accuracy directly determines the assembly accuracy of the end cap and the operational stability of the equipment.

[0003] Currently, existing end cap clamping fixtures have relatively simple structural designs, mostly employing fixed single-point or multi-point clamping structures, which can only achieve simple clamping and positioning of the outer wall of the end cap. Traditional clamping devices have many drawbacks during use: First, they have poor clamping stability. Clamping only on the side wall cannot limit and press the annular flange of the end cap, and the end cap is prone to axial movement and slight displacement during processing, resulting in substandard end face flatness and dimensional accuracy, and a high scrap rate. Second, they have limited functionality. Traditional fixtures are mostly fixed structures, and the end cap cannot rotate freely after clamping, allowing only unilateral processing. After processing one end, the end cap needs to be manually disassembled and re-clamped before processing the other end, making the clamping process cumbersome, significantly increasing manual labor intensity, and severely reducing the overall processing efficiency of the end cap. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a special clamping device for end caps.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A special clamping device for end caps is disclosed. The end cap has an annular flange on its outer circumference. The clamping device includes a base plate, on which fixed plates are spaced apart on the left and right sides. A support circular plate is rotatably mounted between the two fixed plates. A circular hole is formed in the center of the support circular plate, and a support ring is provided inside the circular hole. The end cap is placed in the circular hole, and the annular flange is supported by the support ring. Three sets of clamping components are evenly distributed around the circular hole on the support circular plate. Each clamping component includes a support ring along the support ring. A radially arranged slide rail has a slidingly arranged translational clamping block and a swinging clamping arm respectively on the slide rail. A transmission device is connected between the translational clamping block and the swinging clamping arm. A driving device is also provided on the supporting circular plate. The driving device is used to drive all the translational clamping blocks to slide along the slide rail to clamp or release the end cap in the circular hole. When the translational clamping block moves inward to clamp the end cap, the transmission device can drive the swinging clamping arm to swing and press the annular flange onto the support ring.

[0007] In some embodiments, a rotating shaft is provided on both the left and right sides of the supporting circular plate, and the two rotating shafts are rotatably mounted on two fixed plates.

[0008] In some embodiments, a first transmission wheel is provided on one of the rotating shafts, a first motor is provided on the base plate, a second transmission wheel is provided on the output shaft of the first motor, and a transmission belt is sleeved between the first transmission wheel and the second transmission wheel.

[0009] In some embodiments, the driving device includes a rotating ring coaxially rotatably disposed at the lower end of a supporting circular plate. A transmission shaft and a second motor are respectively disposed on one of the rotating shafts. The transmission shaft and the rotating shaft are coaxially rotatably disposed, and a first gear is disposed at the outer end of the transmission shaft and a bevel gear is disposed at the inner end. The second motor is fixedly disposed at the upper end of the rotating shaft, and a second gear meshing with the first gear is disposed on the output shaft. An arc-shaped block is disposed on one side of the lower end of the rotating ring, and a bevel tooth meshing with the bevel gear is disposed on the arc-shaped block. A straight slide groove extending radially along the supporting circular plate is provided at the bottom end of each slide rail. A plurality of oblique slide grooves corresponding to the straight slide grooves are provided on the rotating ring. A guide rod is disposed at the lower end of each translation clamping block, and each guide rod passes through the straight slide groove and the oblique slide groove in sequence.

[0010] In some embodiments, one end of the swing clamping arm is provided with a hinge shaft, and the other end is a clamping part for pressing the annular flange, and the hinge shaft is rotatably mounted on the slide rail.

[0011] In some embodiments, the transmission device includes a third gear disposed on the hinge shaft, an L-shaped extension block disposed at the upper end of the translation clamping block, and a rack disposed on the L-shaped extension block that meshes with the third gear.

[0012] In some embodiments, a locking device is also provided on one of the rotating shafts, the locking device being used to lock the support circular plate so that the upper or lower end face of the support circular plate remains horizontal.

[0013] In some embodiments, the locking device includes a push rod motor mounted on the rotating shaft, a connecting plate on the push rod of the push rod motor, a movable rod movably passing through the rotating shaft coaxially, the outer end of the movable rod being fixedly connected to the connecting plate, a slot being formed on the lower side of the rotating shaft, an extension rod fixedly connected to the movable rod being movably disposed in the slot, an insertion rod being provided on the inner side of the extension rod, and protrusions being symmetrically arranged vertically and vertically on the outer side of the fixed plate around the rotating shaft, with locking holes for the insertion rod to be inserted on the outer side of each protrusion.

[0014] In some embodiments, one of the three slide rails is located at one end of the rotating shaft, and a limiting block is provided at the inner end of the movable rod. When the insert rod is inserted into the locking hole, the limiting block can extend into the slide rail and abut against the translation clamping block to restrict the translation clamping block from sliding outward.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The device utilizes a support ring to support the annular flange of the end cap, achieving basic support and positioning for the entire end cap and preventing it from being suspended and deformed. Simultaneously, the device employs a linked radial clamping and axial pressing composite structure. A drive mechanism moves three sets of translational clamping blocks radially inward synchronously, uniformly clamping the workpiece from the outer circumference of the end cap, achieving radial gapless positioning and limiting of the end cap. Furthermore, during the synchronous clamping process of the translational clamping blocks, a transmission mechanism links each swinging clamping arm to swing synchronously, pressing down on the annular flange of the end cap from above. This design ensures that the annular flange fits tightly against the end face of the support ring, achieving axial locking and fixation of the end cap. Unlike traditional single-side wall clamping methods, this structure can simultaneously complete the triple limiting of radial clamping, axial pressing, and end face support. It solves the problems of traditional clamping fixtures that can only clamp on one side, have unreliable positioning, and are prone to radial displacement, axial movement, and workpiece loosening during processing. It effectively ensures the dimensional accuracy and form and position tolerance of the upper and lower end faces of the end cap, greatly reduces the scrap rate of the workpiece, and improves the product qualification rate.

[0017] 2. A rotatable support plate is set up. After the end cap is clamped and fixed, it can rotate as a whole with the support plate. The operator can complete the all-round processing of the upper and lower ends of the end cap in sequence without disassembling and re-clamping the end cap. This eliminates the cumbersome process of secondary clamping and positioning required by traditional tooling, greatly simplifies the operation process of double-sided processing of end caps, shortens the processing time, significantly improves the overall processing efficiency of end caps, and adapts to the needs of automated production line processing.

[0018] 3. This device can simultaneously realize the radial sliding of all translational clamping blocks and the swing clamping of the swinging clamping arm through a single drive device, without the need to control multiple power components separately. It has strong structural linkage, simple and convenient operation, and reduces the difficulty of equipment operation and the rate of human error. The overall device has a compact structure and reasonable layout, and is specially adapted to the clamping and processing of end caps with annular flanges. It is highly targeted and widely adaptable, effectively making up for the shortcomings of traditional tooling in that it cannot adapt to the high-precision processing of flanged end caps. It has extremely high practical value and promotion value. Attached Figure Description

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of the clamping device of the present invention.

[0020] Figure 2 This is the second three-dimensional structural schematic diagram of the clamping device of the present invention.

[0021] Figure 3 This is a top view of the clamping device of the present invention.

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of section AA.

[0023] Figure 5 For the present invention Figure 4 Enlarged diagram of point A.

[0024] Figure 6 This is a partial structural schematic diagram of the clamping device of the present invention.

[0025] Figure 7 This is an exploded structural diagram of the clamping device of the present invention.

[0026] Figure 8 For the present invention Figure 7 Enlarged diagram of point B. Detailed Implementation

[0027] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1-8 The diagram illustrates a special clamping device for end caps. The end cap 10 has an annular flange 11 on its outer circumference. The clamping device includes a base plate 1, with fixing plates 2 spaced apart on the left and right sides of the base plate 1. A supporting circular plate 3 is rotatably mounted between the two fixing plates 2. A circular hole 4 is formed in the center of the supporting circular plate 3, and a supporting ring 5 is provided inside the circular hole 4. The end cap 10 is placed in the circular hole 4, and the annular flange 11 is supported by the supporting ring 5. Three sets of clamping components are evenly distributed around the circular hole 4 on the supporting circular plate 3. Each clamping component includes a clamping ring along the circumference of the end cap 10. A radially arranged slide rail 6 supports the circular plate 3. On the slide rail 6, there are slidingly arranged translation clamping blocks 7 and swing clamping arms 8 respectively. A transmission device is connected between the translation clamping blocks 7 and the swing clamping arms 8. A driving device is also provided on the supporting circular plate 3. The driving device is used to drive all the translation clamping blocks 7 to slide along the slide rail 6 to clamp or release the end cap 10 in the circular hole 4. When the translation clamping blocks 7 move inward to clamp the end cap 10, the swing clamping arms 8 can be driven by the transmission device to swing and press the annular flange 11 onto the support ring 5.

[0029] When this end cap clamping device is in operation, the end cap 10 to be processed is first placed inside the circular hole 4 opened in the center of the support circular plate 3. The annular flange 11 on the outer circumference of the end cap 10 overlaps with the support ring 5 set on the inner side of the circular hole 4. The support ring 5 supports the annular flange 11, realizing the initial positioning of the end cap 10 on the support circular plate 3 and completing the workpiece pre-assembly process.

[0030] After the workpiece is placed, the drive device on the support circular plate 3 is activated. The drive device synchronously drives the three sets of circumferentially distributed translational clamping blocks 7 on the support circular plate 3 to slide and move towards the center of the circular hole 4 along the corresponding slide rails 6 in the radial direction. The three sets of translational clamping blocks 7 move inward synchronously, and clamp evenly against the outer peripheral side wall of the end cover 10, thereby limiting and fixing the end cover 10 in the radial direction and effectively restricting the horizontal displacement and shaking of the end cover 10.

[0031] During the process of radial clamping by sliding the translation clamping block 7 inward, the transmission device connecting the translation clamping block 7 and the swing clamping arm 8 synchronously drives the swing clamping arm 8 on the corresponding slide rail 6 to swing, causing the swing clamping arm 8 to swing and press down toward the upper surface of the annular flange 11, ultimately pressing the annular flange 11 of the end cover 10 tightly against the upper end face of the support ring 5, achieving axial pressing and fixing of the annular flange 11, avoiding the problems of axial movement, warping and loosening of the end cover 10, and completing the all-round locking and positioning of the end cover 10.

[0032] After the end cap 10 is fully locked and fixed, the rotating structure between the two sets of fixing plates 2 above the base plate 1, which is rotatably mounted on the support circular plate 3, can drive the end cap 10 to rotate smoothly as a whole. During processing, the upper end face of the end cap 10 can be processed first. After the upper end face is processed, there is no need to disassemble and re-clamp the end cap 10. Simply rotate the support circular plate 3 to drive the end cap 10 to change direction as a whole, and then process the lower end face of the end cap 10, so as to realize the sequential and continuous processing of the upper and lower end faces of the end cap 10.

[0033] After the end cap 10 is machined as a whole, the translation clamping block 7 is driven by the drive device to slide outward along the slide rail 6 to reset, releasing the radial clamping of the end cap 10. At the same time, the swing clamping arm 8 is driven by the transmission device to swing back to reset, releasing the axial pressing of the annular flange 11. The machined end cap 10 can then be taken out from the round hole 4, completing the single clamping process.

[0034] Furthermore, rotating shafts 21 are fixedly installed on the left and right sides of the supporting circular plate 3. The rotating shafts 21 on both sides are respectively rotatably mounted on the two fixed plates 2 of the base plate 1, so that the supporting circular plate 3 as a whole can achieve stable rotation support and rotation relative to the fixed plates 2 through the rotating shafts 21 on both sides, providing a rotation reference for the overall rotation and face changing of the end cover 10.

[0035] See Figure 1 As shown, a first transmission wheel 31 is provided on one of the rotating shafts 21, a first motor 32 is provided on the base plate 1, a second transmission wheel 33 is provided on the output shaft of the first motor 32, and a transmission belt 34 is sleeved between the first transmission wheel 31 and the second transmission wheel 33.

[0036] When the end cap 10, after clamping, needs to undergo end face re-machining, the first motor 32 mounted on the base plate 1 is started. The first motor 32 drives the second transmission wheel 33, which is located at the output shaft end, to rotate synchronously. The second transmission wheel 33 drives the first transmission wheel 31 to rotate synchronously through the transmission belt 34 sleeved on the outside. The first transmission wheel 31 is fixedly mounted on the rotating shaft 21 on one side, and thus drives the rotating shaft 21 to rotate through the first transmission wheel 31.

[0037] During the rotation of the rotating shaft 21, the supporting circular plate 3 is synchronously driven to rotate smoothly around the axis, so that the end cap 10, which is locked and fixed on the supporting circular plate 3, rotates in the same direction with the supporting circular plate 3. After the upper end face of the end cap 10 is processed, the end cap 10 is flipped and reversed through this rotating structure, so that the lower end face of the end cap 10 can be processed directly without manual disassembly and reassembly of the workpiece. This allows for the sequential and continuous processing of the upper and lower end faces of the end cap 10, ensuring processing continuity and effectively improving the overall efficiency and processing accuracy of double-sided processing of the end cap.

[0038] See Figures 5-8 As shown, the driving device includes a rotating ring 41 coaxially rotatably mounted on the lower end of the supporting circular plate 3. A transmission shaft 42 and a second motor 43 are respectively mounted on one of the rotating shafts 21. The transmission shaft 42 and the rotating shaft 21 are coaxially rotatably mounted, with a first gear 44 at the outer end and a bevel gear 45 at the inner end. The second motor 43 is fixedly mounted on the upper end of the rotating shaft 21, and its output shaft has a second gear 46 that meshes with the first gear 44. An arc-shaped block 47 is provided on one side of the lower end of the rotating ring 41. A bevel tooth 48 that meshes with the bevel gear 45 is provided on the arc-shaped block 47. A straight slide groove 49 extending radially along the supporting circular plate 3 is provided at the bottom end of each slide rail 6. Several oblique slide grooves 410 corresponding to the straight slide grooves 49 are provided on the rotating ring 41. A guide rod 411 is provided at the lower end of each translation clamping block 7. Each guide rod 411 passes through the straight slide groove 49 and the oblique slide groove 410 in sequence.

[0039] When this drive device is working, the second motor 43 is mounted on the upper end of the rotating shaft 21. The operation of the second motor 43 drives the second gear 46 on the output shaft to rotate. The second gear 46 meshes with the first gear 44, thereby driving the first gear 44 to rotate. The first gear 44 drives the transmission shaft 42, which is coaxially arranged with it, to rotate. The transmission shaft 42 is arranged coaxially with the rotating shaft 21, and the bevel gear 45 fixed at the inner end of the transmission shaft 42 rotates synchronously.

[0040] The bevel gear 45 meshes with the bevel teeth 48 on the arc-shaped block 47. The rotation of the bevel gear 45 drives the arc-shaped block 47 to move, thereby causing the rotating ring 41, which is coaxially arranged at the lower end of the supporting circular plate 3, to rotate circumferentially. During the rotation of the rotating ring 41, the inclined slide groove 410 opened on it moves in a circular motion in sync. The guide rod 411 at the lower end of the translation clamping block 7 passes through both the straight slide groove 49 at the bottom of the slide rail 6 and the inclined slide groove 410. The straight slide groove 49 restricts the guide rod 411 to move only radially along the supporting circular plate 3. The circumferential rotation of the inclined slide groove 410 is converted into the radial displacement of the guide rod 411, thereby causing each translation clamping block 7 to slide radially inward or outward along the slide rail 6 in sync.

[0041] When the translation clamping block 7 moves inward radially, it clamps the end cover 10. The translation clamping block 7 drives the swing clamping arm 8 to swing through the transmission device, pressing the annular flange 11 onto the support ring 5. When the translation clamping block 7 moves outward radially, it releases the end cover 10, and the swing clamping arm 8 resets synchronously, releasing the pressure on the annular flange 11.

[0042] The drive shaft 42, the first gear 44, and the bevel gear 45 rotate together with the rotating shaft 21 and follow the support plate 3 as a whole. The second motor 43 and the second gear 46 also rotate synchronously with the rotating shaft 21, ensuring that the drive device rotates synchronously with the workpiece during the rotation of the end cover 10 driven by the support plate 3, without interfering with the rotation of the support plate 3. The clamping and releasing operations can be completed at any position when the end cover 10 is rotated and changed for processing.

[0043] Furthermore, one end of the swing clamping arm 8 is provided with a hinge shaft 51, and the other end is a clamping part 52 for pressing the annular flange 11. The hinge shaft 51 is rotatably mounted on the slide rail 6. The transmission device includes a third gear 61 mounted on the hinge shaft 51. An L-shaped extension block 62 is provided at the upper end of the translation clamping block 7. A rack 63 that meshes with the third gear 61 is provided on the L-shaped extension block 62.

[0044] When this transmission device is working, the swing clamping arm 8 is rotatably mounted on the slide rail 6 via the hinge shaft 51 provided at the end, so that the swing clamping arm 8 can swing stably around the hinge shaft 51. The end of the swing clamping arm 8 away from the hinge shaft 51 is provided with a pressing part 52, which is used to press down and press the annular flange 11 of the end cover 10.

[0045] When the translation clamping block 7 slides radially inward along the slide rail 6 toward the center of the supporting circular plate 3 under the action of the driving device, the L-shaped extension block 62 fixed at the upper end of the translation clamping block 7 moves radially synchronously with the translation clamping block 7, causing the rack 63 on the L-shaped extension block 62 to move linearly synchronously. The rack 63 meshes with the third gear 61 mounted on the hinge shaft 51. The linear movement of the rack 63 can drive the third gear 61 to rotate, thereby driving the hinge shaft 51 to rotate.

[0046] The rotation of the hinge shaft 51 synchronously drives the overall swing clamping arm 8 to swing downward around the hinge shaft 51, so that the pressing part 52 at the end of the swing clamping arm 8 presses against the surface of the annular flange 11 of the end cover 10, firmly pressing and fixing the annular flange 11 on the support ring 5, realizing the axial locking of the end cover 10, and completing the bidirectional stable clamping of the end cover 10 in conjunction with the radial clamping of the translation clamping block 7.

[0047] See Figure 1 , Figure 5As shown, a locking device is also provided on one of the rotating shafts 21. The locking device is used to lock the support circular plate 3 so that the upper or lower end face of the support circular plate 3 remains horizontal.

[0048] The locking device includes a push rod motor 81 mounted on the rotating shaft 21, a connecting plate 82 mounted on the push rod of the push rod motor 81, a movable rod 83 coaxially passing through the rotating shaft 21, the outer end of the movable rod 83 being fixedly connected to the connecting plate 82, a slot 84 being provided on the lower side of the rotating shaft 21, an extension rod 85 fixedly connected to the movable rod 83 being movably mounted in the slot 84, an insertion rod 86 being provided on the inner side of the extension rod 85, and protrusions 87 being symmetrically arranged vertically on the outer side of the fixed plate 2 with the rotating shaft 21 as the center, and a locking hole 88 for the insertion rod 86 to be inserted on the outer side of each of the protrusions 87.

[0049] Specifically, the locking device is assembled on the rotating shaft 21 and is used to mechanically lock the support plate 3 after rotation, so that the support plate 3 can be stably kept in a horizontal state at the upper or lower end face, ensuring that the end cover 10 is accurately positioned and without rotational deviation during processing.

[0050] After the supporting circular plate 3 drives the end cover 10 to rotate and adjust to the processing position and the end face is leveled, the push rod motor 81 fixed on the rotating shaft 21 is started. The push rod of the push rod motor 81 extends and drives the connecting plate 82 at the end to move axially. The connecting plate 82 is fixedly connected to the outer end of the movable rod 83 that is coaxially inserted on the rotating shaft 21, thereby pulling the movable rod 83 to slide axially along the rotating shaft 21.

[0051] During the sliding of the movable rod 83, it synchronously drives the extension rod 85, which is fixedly connected to it, to move synchronously within the slot 84 opened on the lower side of the rotating shaft 21, causing the insertion rod 86 provided on the inner side of the extension rod 85 to extend out. Since the outer side of the fixed plate 2 is symmetrically provided with protrusions 87 around the rotating shaft 21, and each protrusion 87 is provided with a locking hole 88 on its outer side, the insertion rod 86 can be inserted into the locking hole 88 of the upper or lower protrusion 87 according to the current rotation posture of the supporting circular plate 3.

[0052] By inserting the rod 86 into the locking hole 88, the rotating shaft 21 can be circumferentially limited and locked, restricting the rotating shaft 21 from continuing to rotate, thereby firmly locking the support plate 3 in a horizontal position, ensuring that the upper or lower end face of the support plate 3 always remains horizontal, and preventing the end cover 10 from rotating or shaking during the processing of the upper and lower end faces, effectively ensuring the flatness and dimensional accuracy of the processing.

[0053] When the support plate 3 needs to be rotated again for surface changing, the push rod motor 81 is controlled to drive the movable rod 83 to reverse and reset through the connecting plate 82, so that the insertion rod 86 exits from the locking hole 88, releasing the locking limit on the rotating shaft 21. At this time, the support plate 3 can rotate freely to change direction and complete the surface changing operation of the next station.

[0054] See Figure 1 , Figure 5 As shown, of the three slide rails 6, one slide rail 6 is located at one end of the rotating shaft 21. A limiting block 91 is provided at the inner end of the movable rod 83. When the insertion rod 86 is inserted into the locking hole 88, the limiting block 91 can extend into the slide rail 6 and abut against the translation clamping block 7 to restrict the translation clamping block 7 from sliding outward.

[0055] Specifically, this limiting structure relies on the linkage between the locking device and the clamping assembly to achieve the mechanical limiting function. One of the three sets of slide rails 6 is arranged at one end of the rotating shaft 21. A limiting block 91 is fixedly installed at the inner end of the movable rod 83, and the whole structure can move axially synchronously with the movable rod 83.

[0056] After the support circular plate 3 is rotated and adjusted, the push rod motor 81 drives the connecting plate 82 to move the movable rod 83 axially, so that the insertion rod 86 is inserted into the locking hole 88 of the corresponding protrusion 87 on the fixed plate 2, completing the rotational locking of the support circular plate 3 and ensuring that the end face is horizontal. At the same time, during the axial movement of the movable rod 83, the limiting block 91 at its inner end is simultaneously driven to extend into the slide rail 6 at the corresponding position.

[0057] After the limiting block 91 extends into the slide rail 6, it directly abuts against the outside of the translation clamping block 7, which has been clamped and positioned inside the slide rail 6, forming an outward sliding limit block on the translation clamping block 7. This restricts the translation clamping block 7 from loosening and sliding outward, and prevents the translation clamping block 7 from retracting and loosening due to processing vibration or load.

[0058] This structure achieves synchronous linkage between rotation locking and clamping anti-loosening. Throughout the entire process of locking and fixing the supporting circular plate 3 and machining the upper and lower end faces of the end cap 10, the outward sliding of the translation clamping block 7 is always restricted, further ensuring the stability of the clamping and fastening state of the end cap 10, effectively preventing the workpiece from loosening or shifting during machining, and improving machining accuracy and machining safety.

[0059] When the processing is completed and the material needs to be unloaded and rotated again, the push rod motor 81 drives the movable rod 83 to reset, the insertion rod 86 exits the locking hole 88, and at the same time the limit block 91 exits the slide rail 6, releasing the limit block on the translation clamping block 7. The translation clamping block 7 can then slide outward normally to release the workpiece and reset the equipment.

[0060] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special clamping device for end caps, wherein the end cap (10) has an annular flange (11) on its outer circumference, characterized in that: The clamping device includes a base plate (1), on which fixed plates (2) are arranged at intervals on the left and right sides. A support circular plate (3) is rotatably installed between the two fixed plates (2). A circular hole (4) is opened in the center of the support circular plate (3). A support ring (5) is arranged inside the circular hole (4). An end cap (10) is placed in the circular hole (4) and supports the annular flange (11) through the support ring (5). Three sets of clamping components are evenly distributed around the circular hole (4) on the support circular plate (3). Each clamping component includes a slide rail (6) arranged radially along the support circular plate (3). On the slide rail (6), there are slidingly arranged translation clamping blocks (7) and swing clamping arms (8) respectively. A transmission device is connected between the translation clamping blocks (7) and the swing clamping arms (8). A driving device is also provided on the support circular plate (3). The driving device is used to drive all the translation clamping blocks (7) to slide along the slide rail (6) to clamp or release the end cap (10) in the circular hole (4). When the translation clamping blocks (7) move inward to clamp the end cap (10), the swing clamping arms (8) can be driven by the transmission device to swing and press the annular flange (11) onto the support ring (5).

2. The end cap clamping device according to claim 1, characterized in that: Rotating shafts (21) are provided on both the left and right sides of the supporting circular plate (3), and the two rotating shafts (21) are rotatably mounted on the two fixed plates (2).

3. The end cap clamping device according to claim 2, characterized in that: A first transmission wheel (31) is provided on one of the rotating shafts (21), a first motor (32) is provided on the base plate (1), a second transmission wheel (33) is provided on the output shaft of the first motor (32), and a transmission belt (34) is sleeved between the first transmission wheel (31) and the second transmission wheel (33).

4. The end cap clamping device according to claim 2, characterized in that: The driving device includes a rotating ring (41) coaxially rotatably mounted on the lower end of a supporting circular plate (3). A transmission shaft (42) and a second motor (43) are respectively mounted on one of the rotating shafts (21). The transmission shaft (42) and the rotating shaft (21) are coaxially rotatably mounted. A first gear (44) is mounted on the outer end of the transmission shaft (42), and a bevel gear (45) is mounted on the inner end. The second motor (43) is fixedly mounted on the upper end of the rotating shaft (21), and a second gear (46) meshing with the first gear (44) is mounted on the output shaft. 1) An arc-shaped block (47) is provided on one side of the lower end. A bevel tooth (48) that meshes with the bevel gear (45) is provided on the arc-shaped block (47). A straight slide groove (49) extending radially along the support circular plate (3) is provided at the bottom end of each slide rail (6). Several oblique slide grooves (410) corresponding to the straight slide groove (49) are provided on the rotating ring (41). A guide rod (411) is provided at the lower end of each translation clamping block (7). Each guide rod (411) passes through the straight slide groove (49) and the oblique slide groove (410) in sequence.

5. The end cap clamping device according to claim 4, characterized in that: One end of the swing clamping arm (8) is provided with a hinge shaft (51), and the other end is a clamping part (52) for pressing the annular flange (11). The hinge shaft (51) is rotatably mounted on the slide rail (6).

6. The end cap clamping device according to claim 5, characterized in that: The transmission device includes a third gear (61) mounted on the hinge shaft (51), an L-shaped extension block (62) mounted on the upper end of the translation clamping block (7), and a rack (63) mounted on the L-shaped extension block (62) that meshes with the third gear (61).

7. The end cap clamping device according to claim 2, characterized in that: A locking device is also provided on one of the rotating shafts (21), which is used to lock the support plate (3) so that the upper or lower end face of the support plate (3) remains horizontal.

8. The end cap clamping device according to claim 7, characterized in that: The locking device includes a push rod motor (81) mounted on the rotating shaft (21), a connecting plate (82) mounted on the push rod of the push rod motor (81), a movable rod (83) movably passing through the rotating shaft (21) coaxially, the outer end of the movable rod (83) being fixedly connected to the connecting plate (82), a slot (84) being provided on the lower side of the rotating shaft (21), an extension rod (85) being movably mounted in the slot (84) and fixedly connected to the movable rod (83), an insertion rod (86) being provided on the inner side of the extension rod (85), and protrusions (87) being symmetrically arranged on the outer side of the fixed plate (2) with the rotating shaft (21) as the center, and a locking hole (88) for the insertion rod (86) to be inserted is provided on the outer side of each of the protrusions (87).

9. A special clamping device for end caps according to claim 8, characterized in that: Of the three slide rails (6), one of the slide rails (6) is located at one end of the rotating shaft (21). A limiting block (91) is provided at the inner end of the movable rod (83). When the insert rod (86) is inserted into the locking hole (88), the limiting block (91) can extend into the slide rail (6) and abut against the translation clamping block (7) to restrict the translation clamping block (7) from sliding outward.

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