Flexible transfer clamp
Through the design of a flexible transfer fixture and the use of the cooperation of an airbag and a guide rod, the problem of low clamping stability of existing blade fixtures is solved, and a clamping effect with high stability and reliability is achieved.
Patent Information
- Application Number
- CN202422844373.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The existing blade clamps have low clamping stability, mainly because the contact area between the mating rod and the inner wall of the through hole is small, resulting in unstable clamping.
A flexible transfer fixture is used, and the expansion and contraction of the airbag are used to achieve clamping through the cooperation of the airbag and the guide rod. The position of the guide rod is fixed with a locking mechanism to ensure close contact between the airbag and the inner wall of the blade through hole, thereby improving clamping stability.
High-stability clamping is achieved, the contact area between the airbag and the inner wall of the blade through hole is large, the clamping is uniform, and the reliability and clamping effect of the fixture are improved.
Smart Images
Figure CN223394888U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of blade clamping and transfer, and in particular relates to a flexible transfer fixture. Background Art
[0002] CNC blades are indexable tools that are installed on tool holders to cut workpieces. Blades can be divided into non-hole type and hole type according to whether there is a through hole in the middle.
[0003] During the production process of hole-type blades, a clamp is required to transfer them between various processes. The existing clamp structure is mostly a group of matching rods that are parallel to each other and move toward each other. When clamping is required, the two matching rods approach each other and enter the through hole in the middle of the blade, and then separate from each other, so that the two matching rods are pressed against the inner wall of the through hole. The blade is clamped by the contact between the matching rods and the inner wall of the through hole. The clamping stability of this clamp is determined by the contact area between the matching rods and the inner wall of the through hole and the force applied by the two matching rods to the inner wall of the through hole. The contact area between the matching rods and the inner wall of the through hole is small, resulting in low clamping stability of this clamp. Utility Model Content
[0004] In order to solve the above-mentioned deficiencies in the prior art, the present application provides a flexible transfer fixture with high clamping stability.
[0005] In order to achieve the above purpose, the utility model adopts the following technologies:
[0006] A flexible transfer fixture comprising:
[0007] A shell, one end of which is connected to the airbag, and a matching hole is opened at the bottom of the shell to connect to the interior of the airbag;
[0008] The guide rod is inserted into the matching hole and is movable along its own axis, with one end connected to the bottom of the airbag and the other end extending into the shell;
[0009] The locking mechanism is arranged on the top of the shell and acts on the other end of the guide rod to fix or release the position of the guide rod.
[0010] Furthermore, the matching hole is located in the middle of the bottom of the shell, with its axis facing the length direction of the shell, and one end of the guide rod is connected to the middle of the bottom of the airbag.
[0011] Furthermore, the locking mechanism includes a rotating rod, a mounting hole is opened on the top of the shell, the rotating rod passes through the mounting hole and is hinged on both sides of the mounting hole, its rotation axis is located on one side of the guide rod and is perpendicular to the axis of the guide rod, and the other end of the guide rod is provided with a hook groove evenly arranged along its own axis, and a barb is formed at one end of the rotating rod for cooperating with the hook groove.
[0012] Furthermore, a torsion spring is sleeved on the rotating axis of the rotating rod. When it is in a natural state, the hook is located on the other side of the guide rod. The locking mechanism also includes a linear mechanism arranged on the top of the shell, whose movable end is arranged perpendicular to the axis of the guide rod and is connected to a matching frame, and the other end of the rotating rod is located in the matching frame.
[0013] Furthermore, a spring is sleeved on the guide rod, and the spring is connected between the matching hole and the bottom of the airbag.
[0014] The beneficial effects of the utility model are:
[0015] 1. Through the structural design of the shell and the arrangement of the airbag, guide rod and locking mechanism, when the guide rod moves along its own axis in the matching hole, the airbag can shrink or expand with it and maintain the shrinkage or expansion state under the action of the locking mechanism, thereby achieving the clamping and release of the blade, changing the traditional clamping method. The contact area between the airbag and the inner wall of the through hole in the middle of the blade is large, and the clamping stability is high.
[0016] 2. A seal is provided at the contact position between the guide rod and the matching hole. One end of the guide rod is connected to the bottom of the airbag by a sealed riveting method. The airbag and the shell are locked with a clamp to ensure the airtightness of each connection of the airbag and improve the reliability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the main structure of the clamp of the embodiment of the present application.
[0018] Figure 2 It is a cross-sectional view of the shell of an embodiment of the present application.
[0019] Figure 3 It is a half-section view of the clamp according to an embodiment of the present application.
[0020] Figure 4 It is a structural schematic diagram of the locking mechanism of an embodiment of the present application.
[0021] Figure numerals: 1-shell, 11-matching hole, 12-mounting hole, 2-airbag, 3-guide rod, 31-hook groove, 4-locking mechanism, 41-rotating rod, 42-hook, 43-spring, 44-straight line mechanism, 45-matching frame, 5-hoop, 6-top cover. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.
[0023] The embodiment of the present application provides a flexible transfer fixture, such as Figures 1 to 3 As shown, it includes: a housing 1, a guide rod 3, and a locking mechanism 4.
[0024] Among them, one end of the shell 1 is connected to the airbag 2, and a matching hole 11 connected to the interior of the airbag 2 is opened at the bottom of the shell 1; the guide rod 3 is inserted into the matching hole 11 and is movable along its own axis, one end of which is connected to the bottom of the airbag 2 and the other end extends into the interior of the shell 1; the locking mechanism 4 is provided at the top of the shell 1, which acts on the other end of the guide rod 3 to fix or release the position of the guide rod 3. When in use, the entire fixture can be connected to a multi-stroke mechanism, such as a five-axis robotic arm, and the blade to be transferred is generally placed horizontally on the storage tray. The multi-stroke mechanism drives the fixture to adjust its posture so that the end of the shell connected to the airbag faces the flat blade, and at the same time, the axis of the guide rod 3 remains coincident with the axis of the through hole in the middle of the blade. Then, the multi-stroke mechanism drives the entire fixture to approach the blade to be transferred in the vertical direction. At this time, one end of the guide rod 3 presses against the bottom of the airbag 2 and moves away from one end of the shell 1, so that the circumference of the airbag 2 approaches the guide rod 3, and the entire airbag is in a contracted state; when the bottom of the airbag 2 passes through the through hole of the blade and abuts against the bottom of the storage tray, the multi-stroke mechanism continues to drive the fixture to approach the blade in the vertical direction, and the guide rod 3 stops moving, while the housing 1 continues to move toward the blade relative to the guide rod 3, thereby squeezing the gas in the airbag 2 toward the periphery of the guide rod 3, causing the airbag 2 to expand and the periphery of the airbag 2 to completely adhere to the inner wall of the blade through-hole. The locking mechanism 4 then secures the position of the guide rod 3, keeping the airbag 2 always in the expanded state, allowing the clamp to lift the blade through the friction between the airbag 2 and the inner wall of the through-hole. When the multi-stroke mechanism drives the clamp to move the blade to the correct position, the locking mechanism 4 releases the guide rod 3, and one end of the guide rod 3 again presses against the bottom of the airbag 2 and moves away from one end of the housing 1, causing the airbag 2 to return to a contracted state and the periphery of the airbag 2 to separate from the inner wall of the through-hole, thereby releasing the blade. The clamp changes the traditional clamping method through the cooperation between the housing 1, the guide rod 3, and the locking mechanism 4. The cooperation between the airbag 2 and the inner wall of the blade through-hole also gives the clamp a high clamping stability.
[0025] Specifically, such as Figures 1 to 3As shown, the matching hole 11 is located in the middle of the bottom of the shell 1, and its axis is toward the length direction of the shell 1. One end of the guide rod 3 is connected to the middle of the bottom of the airbag 2, and the guide rod 3 is coaxially matched in the matching hole 11 and is movable along its own axis, so that when one end of the guide rod 3 approaches or moves away from one end of the shell 1, the airbag 2 can simultaneously shrink toward the axis of the guide rod 3 or simultaneously expand toward its circumference away from the axis of the guide rod 3, so that the circumference of the airbag 2 can simultaneously fit or separate from the inner wall of the blade through hole, and the airbag 2 and the inner wall are evenly stressed, thereby further improving the clamping stability of the clamp; if the guide rod 3 is not connected to the middle position of the bottom of the airbag 2, a part of the airbag 2 will shrink or expand first, and the other part of the airbag 2 will shrink or expand later, so that when clamping the blade, the airbag 2 and the inner wall of the blade through hole are unevenly fitted, that is, the friction between the airbag 2 and the inner wall of the blade through hole are unevenly distributed, which in turn causes the clamped blade to be in an inclined state or makes the clamp clamping ineffective.
[0026] Specifically, such as Figure 3 and Figure 4 As shown, the locking mechanism 4 includes a rotating rod 41, a mounting hole 12 is provided at the top of the shell 1, the rotating rod 41 passes through the mounting hole 12 and is hinged on both sides of the mounting hole 12, its rotation axis is located on one side of the guide rod 3 and perpendicular to the axis of the guide rod 3, and the other end of the guide rod 3 is provided with a hook groove 31 evenly arranged along its own axis, and a barb 42 is formed at one end of the rotating rod 41 for cooperating with the hook groove 31; a torsion spring 43 is sleeved on the rotation axis of the rotating rod 41, when it is in a natural state, the barb 42 is located on the other side of the guide rod 3, that is, the barb 42 is in contact with the end of the guide rod 3 provided with the hook groove 31 under the action of the torsion spring 43, the locking mechanism 4 also includes a linear mechanism 44 provided at the top of the shell 1, the movable end of which is arranged perpendicular to the axis of the guide rod 3 and connected to a matching frame 45, and the other end of the rotating rod 41 is located in the matching frame 45.
[0027] When in use, when the shell 1 moves toward one end relative to the guide rod 3, the airbag 2 expands toward the circumferential side away from the guide rod 3, and at the same time, the shell 1 approaches the guide rod 3 with the locking mechanism 4. Due to the action of the torsion spring 43 and the barb 42 provided at one end of the rotating rod 41, the barb 42 at one end of the rotating rod 41 can move along the hook groove 31 evenly arranged along the axis of the guide rod 3; when the airbag 2 is completely in contact with the inner wall of the blade through hole, the barb 42 at one end of the rotating rod 41 is just stuck in the corresponding hook groove 31. Due to the cooperation between the barb 42 and the hook groove 31, the air pressure inside the airbag 2 is not The guide rod 3 can be moved away from the housing 3, that is, the position of the guide rod 3 is fixed, and the airbag 2 is always in an expanded state. When the airbag 2 needs to be contracted to release the blade, the linear mechanism 44 drives the matching frame 45 to move. The matching frame 45 acts on the other end of the rotating rod 41, pulling the other end of the rotating rod 41 toward the axis of the guide rod 3. The rotating rod 41 rotates, thereby disengaging the barb 42 provided on one end of the rotating rod 41 from the hook groove 31. Under the action of the air pressure in the airbag 2 and the plasticity of the airbag 2 material itself, the guide rod 3 extends out of the housing 1, and the airbag 2 returns to the contracted state, thereby releasing the blade. The structural design of the locking mechanism 4 not only achieves the fixation and release of the guide rod 3, but also optimizes the overall structure of the clamp.
[0028] In actual application, after the airbag 2 is inflated, the internal air pressure and the plasticity of the airbag 2 material itself may not be able to move one end of the guide rod 3 away from the housing 1 in time, resulting in a slow release of the blade. To solve the above problem, this embodiment proposes a preferred solution, which is as follows: Figure 3 As shown, a spring 33 is sleeved on the guide rod 3 and connected between the mating hole 11 and the bottom of the airbag 2. During use, when one end of the guide rod 3 approaches the end of the housing 1, the spring 33 is compressed. After the airbag 2 expands, the locking mechanism 4 secures the guide rod 3 in place. When the blade needs to be released, the locking mechanism 4 releases the guide rod 3. Simultaneously, the spring 33 forces the guide rod 3 end to move rapidly away from the end of the housing 1, rapidly returning the airbag 2 to its contracted state, thereby quickly releasing the blade. The provision of the spring 33 optimizes the speed at which the clamp releases the blade, improving the clamp's reliability.
[0029] Specifically, such as Figure 2 and Figure 3 As shown, a seal is provided at the contact position between the guide rod 3 and the matching hole 11. Specifically, two annular grooves arranged along the axis are opened on the inner wall of the matching hole 11. The annular grooves are used to install sealing rings to prevent the gas in the airbag 2 from leaking from the contact position between the matching hole 11 and the guide rod 3; the airbag 2 is sleeved on one end of the shell 1 and locked with a clamp 5 to prevent the airbag 2 from leaking; at the same time, one end of the guide rod 3 and the bottom of the airbag 2 are connected by a sealed riveting method, which further improves the sealing of the airbag 2, thereby further improving the clamping stability and reliability of the clamp.
[0030] Specifically, a top cover 6 is detachably connected to the top of the housing 1 to cover the locking mechanism 4, making it easy to perform regular maintenance on the locking mechanism 4, while also playing a role in dust prevention and extending the service life of the various components of the locking mechanism 4.
[0031] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.
Claims
1. A flexible transfer fixture, characterized in that: include: A shell (1) is connected to an airbag (2) at one end, and a matching hole (11) is provided at the bottom of the shell (1) and is connected to the interior of the airbag (2); A guide rod (3) is inserted into the matching hole (11) and is arranged to move along its own axis, one end of which is connected to the bottom of the airbag (2) and the other end of which extends into the interior of the shell (1); A locking mechanism (4) is provided on the top of the housing (1) and acts on the other end of the guide rod (3) to fix or release the position of the guide rod (3).
2. A flexible transfer fixture according to claim 1, characterized in that: The matching hole (11) is located in the middle of the bottom of the shell (1), with its axis facing the length direction of the shell (1), and one end of the guide rod (3) is connected to the middle of the bottom of the airbag (2).
3. The flexible transfer fixture according to claim 1, characterized in that: The locking mechanism (4) includes a rotating rod (41), a mounting hole (12) is provided on the top of the housing (1), the rotating rod (41) passes through the mounting hole (12) and is hinged to both sides of the mounting hole (12), the rotating rod (41) has a rotation axis located on one side of the guide rod (3) and perpendicular to the axis of the guide rod (3), the other end of the guide rod (3) is provided with a hook groove (31) evenly arranged along its own axis, and one end of the rotating rod (41) is formed with a barb (42) for cooperating with the hook groove (31).
4. A flexible transfer fixture according to claim 3, characterized in that: A torsion spring (43) is sleeved on the rotation axis of the rotating rod (41). When it is in a natural state, the hook (42) is located on the other side of the guide rod (3). The locking mechanism (4) also includes a linear mechanism (44) provided on the top of the housing (1). The movable end of the linear mechanism (44) is perpendicular to the axis of the guide rod (3) and is connected to a matching frame (45). The other end of the rotating rod (41) is located in the matching frame (45).
5. The flexible transfer fixture according to claim 1, characterized in that: A spring (33) is sleeved on the guide rod (3), and the spring (33) is connected between the matching hole (11) and the bottom of the air bag (2).
6. The flexible transfer fixture according to claim 1, characterized in that: A sealing member is provided at the contact position between the guide rod (3) and the matching hole (11).
7. The flexible transfer fixture according to claim 1, characterized in that: The airbag (2) is sleeved on one end of the housing (1) and is locked by a clamp (5).
8. The flexible transfer fixture according to claim 1, characterized in that: One end of the guide rod (3) is connected to the bottom of the airbag (2) by sealed riveting.
9. The flexible transfer fixture according to claim 4, characterized in that: A top cover (6) is detachably connected to the top of the housing (1) and is used to cover the locking mechanism (4).