A cylinder with a brake guiding device

Abstract

The present invention discloses a cylinder with a brake guiding device. The key points of the technical solution include a cylinder body, the cylinder body includes a cylinder block and a piston rod, a brake device is arranged at one end of the cylinder block corresponding to the piston rod, the brake device includes a rotating disc and a driving mechanism for driving the rotating disc to rotate, a through hole is eccentrically arranged on the rotating disc, the piston rod passes through the through hole, the driving mechanism drives the rotating disc to rotate, and makes the inner wall of the through hole abut against the piston rod to realize the braking of the piston rod. The present invention can realize rapid braking at any position of the piston rod, and at the same time has a guiding function for the piston rod, and the parallel propulsion is stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinders, and more specifically, it relates to a cylinder with a brake guiding device. Background Art

[0002] As an important pneumatic actuator, cylinders are widely used in many industrial fields and some specific mechanical devices, such as automated production lines, automobile manufacturing, machining, etc. It can convert the pressure energy of compressed gas into mechanical energy to achieve linear reciprocating motion, thereby driving various mechanical components to complete corresponding actions.

[0003] Currently, in some scenarios where the movement of the cylinder needs to be quickly stopped, existing ordinary cylinders often have difficulty in achieving braking instantaneously, resulting in a certain deviation in the stopping position of mechanical components, affecting the accuracy and working efficiency of the entire equipment. For example, in the process of material grasping and placing on an automated production line, if the cylinder cannot brake in time and accurately, it may lead to inaccurate material placement positions, thus affecting subsequent production processes. At the same time, the piston rod of the cylinder is prone to bending under load and needs to rely on a guiding device to effectively bear and disperse these forces to ensure stability under high-precision requirements. Therefore, it is crucial to brake the cylinder at any position and ensure stable parallel propulsion of the piston rod. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the present invention provides a cylinder with a brake guiding device, which can achieve rapid braking at any position of the piston rod, and at the same time has a guiding function for the piston rod, and the parallel propulsion is stable and reliable.

[0005] To achieve the above object, the present invention provides the following technical solution: A cylinder with a brake guiding device, including a cylinder body, the cylinder body includes a cylinder block and a piston rod, a brake device is provided at one end of the cylinder block corresponding to the piston rod, the brake device includes a rotating disk and a driving mechanism for driving the rotating disk to rotate, a through hole is eccentrically provided on the rotating disk, the piston rod passes through the through hole, and the driving mechanism drives the rotating disk to rotate and makes the inner wall of the through hole abut against the piston rod to achieve braking of the piston rod.

[0006] The present invention is further provided as: A guiding device is further provided on the cylinder block, the guiding device includes a guiding rod that moves parallel to the piston rod and a guiding sleeve that restricts the guiding rod, and the end of the guiding rod is fixedly connected to the end of the piston rod.

[0007] The present invention is further provided as: A linear bearing is provided in the guiding sleeve.

[0008] The present invention is further configured such that: the driving mechanism includes a control cylinder, a piston block is disposed in the cavity of the control cylinder, a rotating roller is disposed on the piston block, a connecting screw is disposed on the rotating roller, and the connecting screw is connected to the rotating disk.

[0009] The present invention is further configured such that: a cavity is disposed in the piston block, a rotating roller is disposed on one side of the cavity, a spherical protrusion is disposed on the other side, and the connecting screw is disposed between the rotating roller and the protrusion.

[0010] The present invention is further configured such that: a copper sleeve is disposed in the through hole.

[0011] The present invention is further configured such that: the braking device is further provided with an unlocking hole and an unlocking rod. One end of the unlocking hole corresponds to the circumferential side of the rotating disk, and the other end communicates with the outside. A notch is disposed on the rotating disk corresponding to the unlocking hole, and the unlocking rod extends into the unlocking hole and cooperates with the notch.

[0012] The present invention is further configured such that: two sets of guiding devices are symmetrically disposed.

[0013] The present invention is further configured such that: the braking device further includes an extension portion, the extension portion includes a through hole B, and the guiding rod passes through the through hole B.

[0014] The present invention is further configured such that: a locking pin is further disposed in the extension portion, a cam disk is coaxially disposed on the rotating disk, one end of the locking pin cooperates with the flange of the cam disk, and the other end extends into the through hole B and cooperates with the guiding rod.

[0015] In summary, the present invention has the following beneficial effects:

[0016] Compared with the prior art, the present invention is provided with a braking device. The braking device relies on the rotating disk and the through hole disposed in a biased manner. By driving the rotation of the driving device, the inner wall of the through hole can be misaligned with the piston rod to achieve braking. This braking method can achieve rapid braking at any position of the piston rod, and the braking accuracy is high. The present invention is also provided with a guiding device, which can ensure the parallel advancement of the piston rod. Moreover, the braking device of the present invention further includes an extension portion, and the guiding rod and the extension portion cooperate to synchronously brake the guiding rod, so that the overall braking effect is better, the braking force is better, and the stability can be maintained after braking in the case of a large load. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the overall front view structure of the cylinder.

[0018] Figure 2 It is a schematic cross-sectional view of the braking device of the side view of the cylinder.

[0019] Figure 3 It is a schematic cross-sectional structure diagram during braking.

[0020] Figure 4 It is a schematic internal structure diagram of the cylinder when viewed from below.

[0021] Figure 5 It is a schematic internal structure diagram at the extension part and the locking pin.

[0022] Reference numerals: 1. Cylinder body; 101. Cylinder block; 102. Piston rod; 2. Braking device; 201. Rotating disk; 2011. Cam disk; 202. Through hole; 206. Notch; 3. Driving mechanism; 301. Control cylinder; 302. Piston block; 303. Rotating roller; 304. Connecting screw; 4. Guiding device; 401. Guide rod; 402. Guide sleeve; 403. Linear bearing; 5. Copper sleeve; 6. Unlocking hole; 7. Unlocking rod; 8. Extension part; 801. Through hole B; 802. Locking pin; 9. Cavity; 901. Protrusion part. Detailed implementation manners

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] This embodiment discloses a cylinder with a braking guiding device. As Figures 1-5 shown, it includes a cylinder body 1. The cylinder body 1 includes a cylinder block 101 and a piston rod 102. A braking device 2 is provided at one end of the cylinder block 101 corresponding to the piston rod 102. The braking device 2 includes a rotating disk 201 and a driving mechanism 3 for driving the rotating disk 201 to rotate. A through hole 202 is eccentrically provided on the rotating disk 201, and the piston rod 102 passes through the through hole 202. The driving mechanism 3 drives the rotating disk 201 to rotate, and makes the inner wall of the through hole 202 abut against the piston rod 102 to realize the braking of the piston rod 102. Through the above structure, relying on the rotation of the rotating disk 201, the eccentric through hole 202 is displaced, so that the piston rod 102 originally passing through the through hole 202 abuts against the inner wall of the through hole 202, realizing braking. This braking method can brake at any position, and the braking speed is fast, especially suitable for braking in high-precision machining scenarios.

[0025] Furthermore, a guiding device 4 is also provided on the cylinder block 101. The guiding device 4 includes a guide rod 401 that moves parallel to the piston rod 102 and a guide sleeve 402 that restricts the guide rod 401. The end of the guide rod 401 is fixedly connected to the end of the piston rod 102. Specifically, the ends of the piston rod 102 and the guide rod 401 are both fixedly connected to a push plate. The power is provided by the piston rod 102, and the guide rod 401 performs limit guiding to ensure stable parallel pushing.

[0026] Further, a linear bearing 403 is provided inside the guide sleeve 402. As a preference of this embodiment, referring to Figure 4 , two sets of guiding devices 4 are symmetrically arranged, and four linear bearings 403 are provided, so as to ensure the precise and stable movement of the guide rod 401 and better play a guiding role.

[0027] Further, the specific structure of the driving mechanism 3 includes a control cylinder 301. A piston block 302 is arranged inside the cavity of the control cylinder 301, and the piston block 302 can move inside the cavity. Referring to the appendix Figures 2-3 , air holes are arranged at the upper and lower ends of the control cylinder 301. When air is supplied from below, as Figure 2 , the piston block 302 is located above. When air is supplied from above, as Figure 3 , the piston block 302 is located below. A rotating roller 303 is arranged on the piston block 302, and a connecting screw 304 is arranged on the rotating roller 303. The connecting screw 304 is connected to the rotating disc 201. Through the above structure, the up and down movement of the piston block 302 will drive the rotating roller 303 to move up and down, and then the connecting screw 304 on the roller will deflect, thereby driving the rotating disc to rotate and realizing braking.

[0028] Further, a cavity 9 is arranged inside the piston block 302. A rotating roller 303 is arranged on one side of the cavity 9, and a spherical convex part 901 is arranged on the other side. The connecting screw 304 is arranged between the rotating roller 303 and the convex part 901. Through the above structure, the connecting screw 304 is better constrained, making the swinging angle accurate.

[0029] Further, a copper sleeve 5 is arranged inside the through hole 202. Through the cooperation of the copper sleeve 5 and the piston rod 102, on the one hand, the copper sleeve 5 has good self-lubricating performance, which ensures the smooth telescopic movement of the piston rod 102. On the other hand, the hardness of the copper sleeve 5 is relatively soft. When performing eccentric misalignment braking, the copper sleeve, as a sacrificial wear-resistant material, bears most of the wear, thereby protecting the surfaces of the piston rod and the cylinder block and extending their service lives.

[0030] Further, during initial installation and positioning and in case of failure, a manual brake release mechanism is required. Therefore, an unlocking hole 6 and an unlocking rod 7 are also arranged on the braking device 2. One end of the unlocking hole 6 corresponds to the circumferential side of the rotating disc 201, and the other end is communicated with the outside. A notch 206 is arranged on the rotating disc 201 at the position corresponding to the unlocking hole 6. The unlocking rod 7 extends into the unlocking hole 6 and cooperates with the notch 206. Referring to Figure 2 and Figure 4, when the unlocking lever 7 is inserted into the unlocking hole 6, the unlocking lever 7 will further insert into the notch 206. If the rotating disk 201 is in the rotated position at this time, after the unlocking lever 7 is inserted into the notch 206, it will abut against the inner wall of the notch 206, thereby pushing the rotating disk 201 back to the initial position and releasing the braking state. When the unlocking lever 7 is not pulled out, the unlocking lever 7 will always hold the notch 206, and the rotating disk cannot rotate. Therefore, when initially installing the control cylinder 301 or other components, the unlocking lever 7 can also be inserted into the unlocking hole 6 all the time.

[0031] Further, in order to improve the braking force and stability of the braking device 2 after braking, the braking device 2 further includes an extension portion 8. The extension portion 8 includes a through hole B801, and the guide rod 401 passes through the through hole B801. A locking pin 802 is further provided in the extension portion 8, and a cam disk 2011 coaxially arranged is further provided on the rotating disk 201. One end of the locking pin 802 is engaged with the flange of the cam disk 2011, and the other end extends into the through hole B801 and is engaged with the guide rod 401. Refer to Figures 4-5 , through the above structure, while the rotating disk 201 rotates, the cam disk 2011 will also rotate. The flange on the cam disk will push the locking pin 802, so that the locking pin 802 locks the guide rod 401 at the same time. In this way, not only the piston rod is braked and locked, but also the guide rod 401 is locked. The braking force is large, and when bearing a load, the braking position can also be kept stable, which is more suitable for high-precision machining requirements.

[0032] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cylinder with a brake guiding device, comprising a cylinder body (1), wherein the cylinder body (1) includes a cylinder block (101) and a piston rod (102), and is characterized in that: A brake device (2) is provided at one end of the cylinder block (101) corresponding to the piston rod (102). The brake device (2) includes a rotating disk (201) and a driving mechanism (3) for driving the rotation of the rotating disk (201). A through hole (202) is eccentrically provided on the rotating disk (201). The piston rod (102) is arranged through the through hole (202). The driving mechanism (3) drives the rotating disk (201) to rotate, and makes the inner wall of the through hole (202) abut against the piston rod (102) to realize the braking of the piston rod (102). The driving mechanism (3) includes a control cylinder (301). A piston block (302) is arranged in the cavity of the control cylinder (301). A rotating roller (303) is arranged on the piston block (302). A connecting screw (304) is arranged on the rotating roller (303). The connecting screw (304) is connected to the rotating disk (201). A cavity (9) is arranged in the piston block (302). A rotating roller (303) is arranged on one side of the cavity (9), and a spherical convex part (901) is arranged on the other side. The connecting screw (304) is arranged between the rotating roller (303) and the convex part (901). The up and down movement of the piston block (302) drives the up and down movement of the rotating roller (303), and then makes the connecting screw (304) on the roller deflect, driving the rotating disk to rotate, so as to realize braking.

2. The cylinder with a brake guiding device according to claim 1, characterized in that: A guiding device (4) is also arranged on the cylinder block (101). The guiding device (4) includes a guiding rod (401) that moves parallel to the piston rod (102) and a guiding sleeve (402) that restricts the guiding rod (401). The end of the guiding rod (401) is fixedly connected to the end of the piston rod (102).

3. The cylinder with a brake guiding device according to claim 2, wherein: A linear bearing (403) is arranged in the guiding sleeve (402).

4. A cylinder with a braking and guiding device according to claim 1, characterized in that: A copper sleeve (5) is arranged in the through hole (202).

5. A cylinder with a brake guiding device according to claim 1, characterized in that: The brake device (2) is also provided with an unlocking hole (6) and an unlocking rod (7). One end of the unlocking hole (6) corresponds to the circumferential side of the rotating disk (201), and the other end is communicated with the outside. A notch (206) is arranged on the rotating disk (201) corresponding to the unlocking hole (6). The unlocking rod (7) extends into the unlocking hole (6) and is matched with the notch (206).

6. The cylinder with a brake guiding device according to claim 2, characterized in that: Two groups of guiding devices (4) are symmetrically arranged.

7. A cylinder with a braking and guiding device according to claim 2, characterized in that: The brake device (2) also includes an extension part (8). The extension part (8) includes a through hole B (801). The guiding rod (401) passes through the through hole B (801).

8. The cylinder with a brake guiding device according to claim 7, characterized in that: A locking pin (802) is also arranged in the extension part (8). A cam disk (2011) is coaxially arranged on the rotating disk (201). One end of the locking pin (802) is matched with the flange of the cam disk (2011), and the other end extends into the through hole B (801) and is matched with the guiding rod (401).

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