A clamping tool for aluminum profile machining

Abstract

The application discloses a clamping tool for aluminum profile machining, which comprises a cylinder body, the inside of the cylinder body is provided with: a plurality of elastic spiral plate pieces arranged in a circumferential array; a gas hole pushing piece arranged at the bottom and used for driving the elastic spiral plate pieces to adjust the knob direction; and a locking mechanism arranged at the port and comprising a plurality of locking pieces which are movable towards the shaft center along with the knob direction switching of the elastic spiral plate pieces to clamp the aluminum bar profile. The clamping tool for aluminum profile machining provided by the application utilizes the metal elasticity of the elastic spiral plate pieces, when the aluminum bar profile is inserted, the elastic spiral plate pieces are reversely rotated towards the initial distortion direction by driving the gas hole pushing piece, so that the plurality of locking pieces are instantaneously driven to protrude towards the shaft center to clamp the aluminum bar profile, and because the spiral elastic spiral plate pieces are adopted, the torque force provided is extremely large, and a good clamping effect can be achieved.

Description

Technical Field

[0001] This invention relates to a clamping fixture for aluminum rods and profiles, and more specifically to a clamping fixture for processing aluminum profiles. Background Technology

[0002] Currently known universal clamping tools, such as three-jaw chucks, are disclosed in publication (announcement) number CN101927359A, published on 2010-12-29. This type of chuck is a relatively common tooling and can also be used for clamping and machining round aluminum profiles. The clamping principle of this type of chuck is to achieve fixation through clamping tightness. However, while it provides relatively good clamping for round aluminum profiles, it is not a specialized machining tooling, so its handling is relatively general. Summary of the Invention

[0003] The purpose of this invention is to provide a clamping fixture for aluminum profile processing to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a clamping fixture for aluminum profile processing, comprising a cylindrical body, wherein the following are disposed inside:

[0005] Elastic spiral plates arranged in a circular array;

[0006] Located at the bottom, and used to drive the adjustable knob of the elastic spiral plate;

[0007] Located at the port and connected to multiple of the resilient spiral plates, the locking mechanism includes a locking member that moves toward the axis as the resilient spiral plate knob is turned.

[0008] Preferably, the vent pusher includes a piston cylinder, and a pusher piston plate is slidably disposed inside the piston cylinder and held in an initial position by a resisting spring.

[0009] An air chamber is provided around the piston cylinder, and multiple equidistantly arranged synchronizing elements are slidably arranged inside the air chamber and rotatably connected to the first end of the elastic spiral plate.

[0010] The air chamber is connected to the piston cylinder, and the synchronizing element moves synchronously with the piston movement of the pushing piston plate.

[0011] Preferably, an elastic rubber connecting membrane is provided between the plurality of elastic spiral plates, and the elastic spiral plates and the elastic rubber connecting membrane form a barrier, and an air cavity is formed between the barrier and the cylinder.

[0012] The pusher piston plate is in the initial position, and the air chamber is under negative pressure to drive the center of the multiple elastic spiral plates to bulge outward.

[0013] The push piston plate is in the terminated position, and the air chamber is pressurized to drive the centers of the multiple elastic spiral plates to protrude towards the axis to fit against the outer wall of the aluminum rod profile for locking.

[0014] Preferably, the locking mechanism includes a guide ring that slides within the cylinder, the inner diameter of which is larger than the inner diameter of the piston cylinder.

[0015] The locking element is slidably assembled on the guide ring on a guide groove arranged from the outside to the axis.

[0016] The guide ring is rotatably provided with a rotating disk, and the rotating disk has an arc-shaped groove that drives the locking member to slide toward the axis.

[0017] The second end of the elastic spiral plate is fixedly installed on the rotating disk.

[0018] Preferably, the inner surface of the elastic spiral plate is provided with an arc-shaped rubber pressure strip.

[0019] Preferably, the arc-shaped rubber pressure strip is provided with arc-shaped top guide metal parts on both sides, which are connected to the elastic spiral plate;

[0020] Furthermore, when the piston cylinder is in the initial position, the arc edges of the plurality of arc-shaped guide metal parts are close to the axis, and the circumference of the circle formed is equal to the inner diameter of the piston cylinder.

[0021] Preferably, the locking member has a boring hole on the side facing the axis, and an ejector portion is symmetrically slidably arranged in the boring hole;

[0022] A wedge-shaped movable block is slidably disposed between the two ejector portions. The wedge-shaped movable block is used to drive the ejector portions to separate to both sides to a predetermined distance along the contact surface between the boring hole and the ejector portions when they extend out of the boring hole.

[0023] Preferably, an arc-shaped elastic plate is also included, which is used to drive the ejector portion to remain retracted into the boring hole.

[0024] Preferably, the locking member is provided with a negative pressure air passage, and the first end of the wedge-shaped movable block is provided with a piston rod located in the negative pressure air passage to maintain piston movement, and the negative pressure air passage is connected to the air chamber.

[0025] Preferably, an arc-shaped metal elastic plate is provided at the apex of the ejector portion near the wedge-shaped movable block.

[0026] In the above technical solution, the clamping fixture for aluminum profile processing provided by the present invention has the following beneficial effects: Utilizing the inherent metallic elasticity of the elastic spiral plate, when the aluminum rod profile is inserted, the air hole pusher causes the elastic spiral plate to rotate in the opposite direction of the initial twist. After rotating to a predetermined angle, the elastic spiral plate will automatically twist to form a state opposite to the initial twist direction, thereby instantly driving multiple locking parts to protrude towards the axis to clamp the aluminum rod profile. Moreover, because a spiral elastic spiral plate is used, the torque force provided is extremely large, which can achieve a very good clamping effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the synchronization component and air chamber assembly structure provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the locking mechanism provided in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the implementation state of the elastic spiral plate component with the push piston plate in the initial position according to an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the implementation state of the elastic spiral plate component with the push piston plate located at the termination position according to an embodiment of the present invention;

[0034] Figure 7 for Figure 5 A schematic diagram of the implementation structure of the arc-shaped guide metal part contacting the aluminum rod profile under the transition state;

[0035] Figure 8 This is a schematic diagram of the cross-sectional structure of the guide ring, rotating disk, and guide ring assembly provided in an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the cross-sectional structure of the arc-shaped rubber pressure strip provided in an embodiment of the present invention;

[0037] Figure 10This is a schematic cross-sectional view of the locking component provided in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Cylinder body; 2. Elastic spiral plate; 21. Arc-shaped rubber pressure strip; 211. Elastic rubber component; 22. Arc-shaped top guide metal component; 3. Air hole push component; 31. Piston cylinder; 32. Push piston plate; 33. Shielding spring; 34. Air chamber; 35. Synchronizing component; 4. Locking mechanism; 41. Locking component; 411. Negative pressure air passage; 42. Guide ring; 43. Rotary disk; 5. Elastic rubber connecting membrane; 6. Ejector part; 61. Wedge-shaped moving block; 611. Piston rod; 62. Arc-shaped elastic plate; 63. Arc-shaped metal elastic plate. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] like Figure 1-10 As shown, a clamping fixture for aluminum profile processing includes a cylindrical body 1, which has the following internal components:

[0042] 2. Elastic spiral plates arranged in a circular array;

[0043] Located at the bottom, and used to drive the elastic spiral plate 2 with an adjustable knob direction, the air hole pusher 3;

[0044] A locking mechanism 4 is located at the port and is assembled with the first end of a plurality of elastic spiral plates 2. The locking mechanism 4 includes a locking member 41 that moves toward the axis as the knob of the elastic spiral plate 2 is turned. The locking member 41 is clamped by an aluminum rod profile.

[0045] Specifically, the cylinder 1 is mounted on the machine tool and located below or coaxially with the milling cutter to facilitate the milling of the aluminum rod profile.

[0046] In the embodiment, the initial state of the elastic spiral plate 2 is a left spiral, and the final state after being driven by the air hole pusher 3 is a right spiral. During the process of switching from the left spiral to the right spiral, the locking mechanism 4 will inevitably protrude towards the end of the cylinder 1. Then, when it is about to switch to the right spiral, it will switch instantly due to the influence of the elastic coefficient. During this process, the locking member 41 will extend to clamp the aluminum rod profile, and then pull the aluminum rod profile to move towards the cylinder 1 to the predetermined position.

[0047] Furthermore, in the above embodiment, the air-hole pusher 3 includes a piston cylinder 31. Inside the piston cylinder 31, a pusher piston plate 32 is slidably disposed, held in its initial position by a resistive spring 33. An air chamber 34 is disposed around the piston cylinder 31. Multiple equidistantly arranged synchronizing elements 35 are slidably disposed within the air chamber 34 and rotatably connected to the first end of the elastic spiral plate 2. The air chamber 34 communicates with the piston cylinder 31, and the synchronizing elements 35 move synchronously with the piston movement of the pusher piston plate 32. Combined with... Figure 2 and Figure 3 When the aluminum rod profile extends into the cylinder 1, it enters the piston cylinder 31, and then, with the pusher, the piston plate 32 moves towards... Figure 2 The piston moves downward in the direction shown, thereby pushing the air pressure into the air chamber 34. Because the synchronizing elements 35 are arranged at equal intervals in the air chamber 34, and the air pressure value of each synchronizing element 35 is constant, when the gas in the piston cylinder 31 enters the air chamber 34, it will push the synchronizing elements 35 to rotate in sequence. At this time, the first end of the elastic spiral plate 2 follows the synchronizing element 35 to rotate. During the rotation, it switches from a left spiral to a right spiral.

[0048] It should be noted that the sealing of the air chamber 34 and the synchronization component 35 in the above embodiments is common technical knowledge known to those skilled in the art, and therefore will not be described in detail.

[0049] Furthermore, in the above embodiment, the locking mechanism 4 includes a guide ring 42 that slides within the cylinder 1, the inner diameter of which is larger than the inner diameter of the piston cylinder 31; the locking member 41 is slidably fitted onto a guide groove on the guide ring 42 that extends from the outside towards the axis; furthermore, a rotating disk 43 is rotatably mounted on the guide ring 42, and the rotating disk 43 has an arc-shaped groove that drives the locking member 41 to slide towards the axis; secondly, the second end of the elastic spiral plate 2 is fixedly mounted on the rotating disk 43. (Combined with...) Figure 4 and Figure 8 As shown, during implementation, when the left-hand spiral switches to the right-hand spiral, the rotating disk 43 moves accordingly, thereby driving multiple locking members 41 to protrude towards the axis, thus clamping the aluminum rod profile. Then, as the elastic spiral plate 2 continues to switch to the right-hand spiral, it pulls the aluminum rod profile to actively move towards the bottom of the piston cylinder 31. In other words, by using the right-hand spiral switch of the elastic spiral plate 2, the aluminum rod profile actively pushes the piston plate 32 to the termination position.

[0050] In the above technology, the elastic spiral plate 2 itself has a metallic elasticity property. After the aluminum rod profile is inserted, the air hole pusher 3 drives the elastic spiral plate 2 to rotate in the opposite direction of the initial twisting direction. After rotating to a predetermined angle, the elastic spiral plate 2 will automatically twist to form a state opposite to the initial twisting direction, thereby instantly driving multiple locking members 41 to protrude towards the axis and clamp the aluminum rod profile. Moreover, because the spiral elastic spiral plate 2 is used, the torque force provided is extremely large, which can achieve a very good clamping effect.

[0051] As a further embodiment of the present invention, an elastic rubber connecting membrane 5 is provided between multiple elastic spiral plates 2, and the elastic spiral plates 2 and the elastic rubber connecting membrane 5 form a barrier, and an air cavity is formed between the barrier and the cylinder 1.

[0052] The piston plate 32 is in the initial position, and the negative pressure in the air chamber drives multiple elastic spiral plates 2 to bulge outward from their centers, such as... Figure 5 As shown;

[0053] When the piston plate 32 is in the terminated position, the air chamber is pressurized to drive the centers of multiple elastic spiral plates 2 to converge and protrude towards the axis to fit against the outer wall of the aluminum rod profile for locking. Figure 6 As shown.

[0054] Specifically, in this embodiment, multiple elastic spiral plates 2 and elastic rubber connecting membranes 5 form a barrier, and then the two ends of the barrier are respectively connected to the inside of the cylinder 1. When the aluminum rod profile extends into the cylinder 1, it enters the piston cylinder 31, and then, with the push drive, the push piston plate 32 moves towards... Figure 2 The downward movement in the indicated direction pushes air pressure into the air chamber 34, thereby sequentially pushing the synchronizing member 35 to rotate. At this time, the first end of the elastic spiral plate 2 rotates with the synchronizing member 35, switching from a left spiral to a right spiral during rotation. As the elastic spiral plate 2 continues to switch to a right spiral, the rotating disk 43 moves accordingly, thereby driving multiple locking members 41 to protrude towards the axis, thus clamping the aluminum rod profile, causing the aluminum rod profile to actively push the pushing piston plate 32 to move to the termination position. During the above process, the movement of the pushing piston plate 32 within the piston cylinder 31 compresses gas into the air chamber 34, while the gas moving with the synchronizing member 35 due to air pressure enters the air cavity, thus compressing the multiple elastic spiral plates 2 so that their centers protrude towards the axis to fit against the outer wall of the aluminum rod profile for locking.

[0055] When unlocking is required, simply open the solenoid valve on the control cylinder 1 that is connected to the air chamber to release the airflow in the air chamber 34. At this time, the airflow inside the air chamber 34 is insufficient to support the compression, causing the centers of multiple elastic spiral plates 2 to bulge towards the axis to fit the outer wall of the aluminum rod profile. This will release the locking and positioning of the elastic spiral plates 2 on the aluminum rod profile.

[0056] Furthermore, when the control solenoid valve opens, it automatically closes after 2 seconds. At this time, the external air pump injects gas into the air chamber 34 at a predetermined pressure, which drives the push synchronizing component 35 to reset. During the rotation, it switches from a right-hand spiral to a left-hand spiral, actively moving towards the left-hand spiral. At this time, the synchronizing component 35 moves with the left-hand spiral of the elastic spiral plate 2, thereby pushing the air pressure into the piston cylinder 31, and then resetting the push piston plate 32 to its original position. Figure 2 The aluminum rod is pushed to the indicated position, thus propelling it a predetermined distance, i.e., a visible sliding motion.

[0057] At the same time, when the synchronizing member 35 moves in accordance with the left-right switching of the elastic spiral plate 2, thereby pushing the air pressure into the piston cylinder 31, the movement of the synchronizing member 35 will also draw in the air pressure in the air chamber, thereby creating a negative pressure in the air chamber, which drives the centers of the multiple elastic spiral plates 2 to bulge outward.

[0058] Furthermore, when the elastic spiral plate 2 switches to the left spiral, the multiple locking members 41 move outward toward the axis, thereby disengaging and losing their grip on the aluminum rod profile.

[0059] As a further embodiment of the present invention, the inner side of the elastic spiral plate 2 is provided with an arc-shaped rubber pressure strip 21.

[0060] Specifically, in this embodiment, a notch is provided on the contact surface between the arc-shaped rubber pressure strip 21 and the aluminum rod profile, and an elastic rubber component 211 is provided within the notch. In the initial state, i.e., when the elastic spiral plate 2 is in a left-hand spiral, the elastic rubber component 211... Figure 9 As shown in the state distribution, when the elastic spiral plate 2 switches to the right spiral, the elastic rubber part 211 will inevitably deform due to the change in the shape of the elastic spiral plate 2, thereby forming a hinge force at the contact surface where the arc-shaped rubber pressure strip 21 contacts the aluminum rod profile, thus making the clamping have the effect of preventing rotation.

[0061] As a further embodiment of the present invention, the arc-shaped rubber pressure strip 21 is provided with arc-shaped top guide metal parts 22 connected to the elastic spiral plate 2 on both sides;

[0062] Furthermore, when the piston cylinder 31 is in the initial position, the arc edges of the multiple arc-shaped guide metal parts 22 are close to the axis, and the circumference of the circle formed is equal to the inner diameter of the piston cylinder 31.

[0063] Specifically, in combination Figure 7 As shown, when the elastic spiral plate 2 is a left-hand spiral, multiple arc-shaped guide metal parts 22 face the axis, and because the circumference of the circle formed is equal to the inner diameter of the piston cylinder 31, they play an alignment role. The aluminum rod profile is observed by the naked eye to ensure that the inserted aluminum rod profile can be inserted into the piston cylinder 31.

[0064] As a further embodiment of the present invention, the locking member 41 has a boring hole on the side facing the axis, and an ejector part 6 is symmetrically slidably arranged in the boring hole;

[0065] A wedge-shaped movable block 61 is slidably disposed between the two ejector portions 6. The wedge-shaped movable block 61 is used to drive the ejector portions 6 to separate to the sides to a predetermined distance along the contact surface between the boring hole and the ejector portions 6 when extending out of the boring hole.

[0066] Furthermore, it also includes an arc-shaped elastic plate 62, which is used to drive the ejector portion 6 to remain retracted into the boring hole.

[0067] Secondly, a negative pressure air passage 411 is provided inside the locking member 41, and a piston rod 611 located in the negative pressure air passage 411 to maintain piston movement is provided at the first end of the wedge-shaped movable block 61. The negative pressure air passage 411 is connected to the air chamber.

[0068] Furthermore, an arc-shaped metal elastic plate 63 is provided at the apex of the ejector part 6 near the wedge-shaped movable block 61.

[0069] Specifically, as the elastic spiral plate 2 switches from a left-hand spiral to a right-hand spiral, the rotating disk 43 moves accordingly, thereby driving multiple locking members 41 to protrude towards the axis. During this protrusion process, gas from the movement of the synchronizing member 35 due to air pressure enters the air chamber, compressing the centers of the multiple elastic spiral plates 2 towards the axis to fit against the outer wall of the aluminum rod profile for locking. Because the elastic spiral plates 2 are fitted against the outer wall of the aluminum rod profile, excess gas enters the negative pressure air passage 411, which then drives the piston rod 611 to... Figure 10 The piston rod 611 moves upward in the direction shown, and when it moves, it will squeeze and cause the ejector part 6 to be squeezed out. During the extrusion process, the two ejector parts 6 move to the sides during the convex process, and then the arc-shaped metal elastic plate 63 will contact the surface of the aluminum rod profile to fix it.

[0070] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A clamping fixture for aluminum profile processing, characterized in that, Including the cylinder (1), which is internally provided with: (2) Elastic spiral plates arranged in a circular array; Located at the bottom, and for driving the knob of the elastic spiral plate (2) with an adjustable air hole pusher (3); A locking mechanism (4) located at the port and assembled with the first end of the plurality of elastic spiral plates (2), the locking mechanism (4) including a locking member (41) that moves toward the axis as the knob of the elastic spiral plate (2) is switched; The locking member (41) has a boring hole on the side facing the axis, and an ejector part (6) is symmetrically slidably arranged in the boring hole. A wedge-shaped movable block (61) is slidably disposed between the two ejector portions (6). The wedge-shaped movable block (61) is used to drive the ejector portions (6) to separate to the sides to a predetermined distance along the contact surface between the boring hole and the ejector portions (6) when extending out of the boring hole. It also includes an arc-shaped elastic plate (62) for driving the ejector (6) to remain retracted into the bore; The locking member (41) is provided with a negative pressure air passage (411), and the first end of the wedge-shaped movable block (61) is provided with a piston rod (611) located in the negative pressure air passage (411) to maintain piston movement. The negative pressure air passage (411) is connected to the air chamber. An arc-shaped metal elastic plate (63) is provided at the apex of the ejector part (6) near the wedge-shaped movable block (61). The air hole pusher (3) includes a piston cylinder (31), and the piston cylinder (31) is slidably provided with a pusher piston plate (32) that is pushed and held in the initial position by a retaining spring (33). An air chamber (34) is provided around the piston cylinder (31), and multiple equidistantly arranged synchronizing elements (35) are rotatably connected to the first end of the elastic spiral plate (2) inside the air chamber (34). The air chamber (34) is connected to the piston cylinder (31), and the synchronizing element (35) moves synchronously with the piston movement of the push piston plate (32); The locking mechanism (4) includes a guide ring (42) that slides inside the cylinder (1), the inner diameter of the guide ring (42) being larger than the inner diameter of the piston cylinder (31); The locking member (41) is slidably assembled on the guide ring (42) on a guide groove arranged from the outside to the axis; The guide ring (42) is rotatably provided with a rotating disk (43), and the rotating disk (43) has an arc-shaped groove that drives the locking member (41) to slide toward the axis. The second end of the elastic spiral plate (2) is fixedly installed on the rotating disk (43).

2. The clamping fixture for aluminum profile processing according to claim 1, characterized in that, An elastic rubber connecting membrane (5) is provided between multiple elastic spiral plates (2), and the elastic spiral plates (2) and the elastic rubber connecting membrane (5) form a barrier, and an air cavity is formed between the barrier and the cylinder (1); The push piston plate (32) is in the initial position, and the air chamber is under negative pressure to drive the center of the multiple elastic spiral plates (2) to bulge outward; The push piston plate (32) is in the terminated position, and the air chamber is pressurized to drive the centers of the multiple elastic spiral plates (2) to bulge towards the axis to fit against the outer wall of the aluminum rod profile for locking.

3. The clamping fixture for aluminum profile processing according to claim 1, characterized in that, The inner side of the elastic spiral plate (2) is provided with an arc-shaped rubber pressure strip (21).

4. The clamping fixture for aluminum profile processing according to claim 1, characterized in that, Arc-shaped rubber pressure strip (21) has arc-shaped top guide metal parts (22) on both sides that are connected to the elastic spiral plate (2). When the piston cylinder (31) is in the initial position, the arc edges of the multiple arc-shaped guide metal parts (22) are close to the axis, and the circumference of the circle formed is equal to the inner diameter of the piston cylinder (31).

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