A cushioning stop device

Abstract

A buffer stop device is arranged on the side of a slide rail, the slide rail is provided with a slide base, and the buffer stop device comprises a fixed block, a mounting block, a blocking block, a buffer assembly and a cylinder. One side of the mounting block is fixedly connected with the fixed block through screwing, and the other side is fixedly connected with the cylinder through screwing. The inside of the mounting block is provided with a guide groove. The blocking block comprises a blocking block body, a plug-in block, a rotating shaft, a mounting hole and a clamping groove. The blocking block body is inserted into the guide groove. The buffer assembly comprises a pendulum pin and a buffer. The buffer stop device is arranged to transmit the impact force of the slide base to the buffer through the pendulum pin, the buffer rod of the buffer is retracted under the thrust, the buffer force is applied to the slide base through the pendulum pin, the impact force borne by the blocking block is reduced, the cylinder is used to adjust the blocking block and the buffer assembly to be close to or away from the slide base, and the movement of the slide base is not affected without the need for point stopping of the slide base.

Description

Technical Field

[0001] This utility model relates to the field of buffer stop devices, and in particular to a buffer stop device. Background Technology

[0002] Currently, guide rails are used to achieve precise transport and fixed-point stopping at different functional stations on the assembly line. To reduce the cost of fixed-point stopping, a fixing block is often used to extend and block the slider on the guide rail when it reaches its position, thus stopping the slider on the guide rail. However, the slider stops with a large impact force, making the blocking component prone to damage.

[0003] A utility patent with publication number CN206626433U discloses an elastic stop buffer device for steel plates at the end of an output roller conveyor in a steel plate rolling production line. This device includes a baffle frame, a spring, a baffle, a guide bolt, and a nut. The baffle frame has an opening through which the guide bolt passes. The spring is mounted on the guide bolt, which passes through the baffle. The guide bolt is located at the other end of the baffle and secured with a nut. Due to the spring structure, the elastic deformation of the spring quickly absorbs the remaining kinetic energy of the steel plate. Then, the spring returns to its original shape, achieving the purpose of quickly stopping and positioning the steel plate head upon contact with the elastic stop buffer.

[0004] Although the elastic stop buffer device of the steel plate at the end of the output roller conveyor has a buffering effect, it is not suitable for application scenarios where the slide needs to stop at a fixed point in the middle of the slide rail. Utility Model Content

[0005] In view of this, the present invention provides a buffer stop device to meet the function of automated rotary positioning piston and to meet the processing requirements of piston.

[0006] A buffer stop device is disposed on the side of a slide rail, the slide rail having a slide seat. It includes a fixed block fixedly disposed on the side of the slide rail, a mounting block fixedly disposed on the fixed block, a blocking block disposed above the mounting block, a buffer assembly movable on the blocking block, and a cylinder driving the blocking block. The fixed block is fixedly connected to the cylinder via the mounting block. One side of the mounting block is screwed to the fixed block, and the other side is screwed to the cylinder. The mounting block has a guide groove inside, facing the slide rail. The blocking block includes a blocking block body, a mounting seat disposed above the blocking block body, a rotating shaft disposed on the blocking block body, a mounting hole disposed on the side wall of the mounting seat, and a snap-fit ​​groove disposed on the mounting seat. The blocking block body is inserted into the guide groove and moves along its groove wall during movement. The mounting seat is disposed above the mounting block. The rotating shaft is disposed on the side of the blocking block away from the slide rail. The buffer assembly includes a pendulum pin rotatably disposed on the rotating shaft and a buffer connected to the pendulum pin. The external washer of the pendulum needle is screwed to the rotating shaft. The rotation of the pendulum needle transmits the impact force from the slide block to the buffer. The buffer is fixedly mounted on the mounting base through the mounting hole, and the buffer rod of the buffer is fixedly connected to one end of the pendulum needle. When the buffer rod retracts under external force, it applies a buffering force to the pendulum needle. The end of the cylinder's output rod is provided with a locking block, which engages with the locking groove.

[0007] Furthermore, the fixing block is positioned below the slide rail.

[0008] Furthermore, the cross-sectional shape of the guide groove is the same as the cross-sectional shape of the blocking block.

[0009] Furthermore, the snap-fit ​​groove is disposed below the mounting hole. The snap-fit ​​groove includes a main groove and a secondary groove disposed on the groove wall of the main groove. The diameter of the main groove is smaller than the diameter of the snap-fit ​​block and greater than or equal to the diameter of the output rod. The diameter of the secondary groove is greater than or equal to the diameter of the snap-fit ​​block. The snap-fit ​​block snaps into the secondary groove, and the output rod snaps into the main groove.

[0010] Furthermore, the pendulum needle faces away from the buffer and has a first inclined surface located above the rotation axis, and a second inclined surface located below the rotation axis.

[0011] Furthermore, when not pushed by the slide, the second inclined surface of the pendulum needle is arranged parallel to the fixed block, and the first inclined surface is inclined toward the slide. When the pendulum needle is pushed by the slide, the pendulum needle rotates toward the side where the blocking block is located until the slide and the blocking block abut against each other.

[0012] Furthermore, when the slide is about to stop decelerating, the cylinder drives the output rod to extend towards the slide rail. The pendulum needle is pushed and rotated by the slide to squeeze the buffer rod. The buffer rod applies a buffering force to the slide. When the slide continues to move, the cylinder drives the output rod to retract inward. The pendulum needle loses the thrust from the slide and returns to its tilted state.

[0013] Compared with the prior art, the buffer stop device provided by this utility model has a buffer assembly and a blocking block that reduces the impact force of the slide on the blocking block when the slide is about to stop, without affecting the slide's ability to move again on the slide rail. The mounting block is used to fix the cylinder, and the guide groove on the mounting block guides the blocking block. The blocking block prevents the slide from stopping at a fixed point. The pendulum in the buffer assembly transmits the impact force of the moving slide to the buffer, and the buffer applies a buffering force to the slide through the pendulum, reducing the impact force of the slide on the blocking block. The cylinder drives the output rod to change the height of the blocking block, raising it when the slide needs to stop at a fixed point and lowering it when the slide continues to move. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a buffer stop device provided by the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the buffer stop device and the slide rail.

[0016] Figure 3 for Figure 1 The schematic diagram shows the structure of the blocking block in the buffer stop device.

[0017] Figure 4 for Figure 1 The buffer stop device has a structural diagram of a mounting block. Detailed Implementation

[0018] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0019] Please see Figures 1 to 4This is a structural schematic diagram of a buffer stop device provided by this utility model. The buffer stop device is disposed on the side of a slide rail 100, and a slide block 200 is provided on the slide rail 100. The buffer stop device includes a fixing block 10 fixedly disposed on the side of the slide rail 100, a mounting block 20 fixedly disposed on the fixing block 10, a blocking block 30 disposed above the mounting block 20, a buffer assembly 40 movable on the blocking block 30, and a cylinder 50 for driving the blocking block 30. It is conceivable that the buffer stop device also includes other functional modules, such as screws, which are technologies known to those skilled in the art and will not be described in detail here.

[0020] The fixing block 10 is fixedly connected to the cylinder 50 via the mounting block 20. The fixing block 10 is positioned below the slide rail 100 to avoid obstructing the movement of the slide block 200.

[0021] The mounting block 20 is screwed to the fixing block 10 on one side and screwed to the cylinder 50 on the other side. A guide groove 21 is provided inside the mounting block 20. The guide groove 21 is oriented towards the slide rail 100. The cross-sectional shape of the guide groove 21 is the same as that of the blocking block 30 to prevent the blocking block 30 from tilting during movement.

[0022] The blocking block 30 includes a blocking block body 31, a mounting base 32 disposed above the blocking block body 31, a rotating shaft 33 disposed on the blocking block body 31, a mounting hole 34 disposed on the side wall of the mounting base 32, and a snap-fit ​​groove 35 disposed on the mounting base 32. The blocking block body 31 is used to stop the slide block 200, bringing it to a fixed position. The blocking block body 31 is inserted into the guide groove 21 and moves along its groove wall during movement. The mounting base 32 is disposed above the mounting block 200 and is used to mount the buffer assembly 40. The rotating shaft 33 is disposed on the side of the blocking block 30 away from the slide rail 100. The rotating shaft 33 serves as the rotation axis of the buffer assembly 40, allowing it to rotate around the rotating shaft 33. The rotating shaft 33 and the mounting hole 34 are used to fix the buffer assembly 40. The snap-fit ​​groove 35 assists the cylinder 50 in driving the blocking block 30. The snap-fit ​​groove 35 is located below the mounting hole 34. The snap-fit ​​groove 35 includes a main groove 351 and a secondary groove 352 located on the groove wall of the main groove 351. The arrangement of the main groove 351 and the secondary groove 352 is related to the cylinder 50 described below, and will be explained in detail with reference to the cylinder 50.

[0023] The buffer assembly 40 includes a rotatable pin 41 rotatably mounted on the blocking block 30, and a buffer 42 fixedly mounted to one end of the rotatable pin 41.

[0024] The pendulum needle 41 is attached to the blocking block 30. The pendulum needle 41 is sleeved on the rotating shaft 33 and externally fitted with a washer for screw connection to the rotating shaft 33. The pendulum needle 41 has a first inclined surface 411 located above the rotating shaft 33 and a second inclined surface 412 located below the rotating shaft 33, facing away from the buffer 42. The first inclined surface 411 prevents the pendulum needle 41 from colliding with the slide block 200 during rotation, while the second inclined surface 412 provides space for the extension and retraction of the buffer 42. When the pendulum needle 41 rotates, it transmits the impact force of the slide block 200 to the buffer 42. When not pushed by the slide block 200, the second inclined surface 412 of the pendulum needle 41 is parallel to the fixing block 10, and the first inclined surface 411 is inclined towards the slide block 200. When the pendulum needle 41 is pushed by the slide block 200, the pendulum needle 41 rotates toward the side where the blocking block 30 is located until the slide block 200 abuts against the blocking block 30.

[0025] The buffer 42 is fixedly mounted on the mounting base 32 through the mounting hole 34. The buffer rod 421 of the buffer 42 is fixedly connected to one end of the pendulum needle 41. When the buffer rod 421 is subjected to external force and retracts, it applies a buffering force to the pendulum needle 41, thereby reducing the impact force of the slide block 200 on the blocking block 30. It is conceivable that, depending on actual production needs, the buffer 42 can use different buffers such as hydraulic buffers, hydraulic shock absorbers, and spring buffers. The structure and function of the buffer 42 are general technologies and will not be described in detail here.

[0026] The output rod 51 of the cylinder 50 has a locking block 52 at its end, which engages with the locking groove 35. The diameter of the main groove 351 is smaller than the diameter of the locking groove 35, but greater than or equal to the diameter of the output rod 51. The diameter of the secondary groove 352 is greater than or equal to the diameter of the output rod 51. The locking block 52 engages with the secondary groove 352, and the output rod 51 engages with the main groove 351. The cylinder 50 extends and retracts the output rod 51 to control the blocking block 30 to move closer to or further away from the slide block 200. The extension and retraction direction of the output rod 51 is the same as the extension direction of the guide groove 21.

[0027] When the slide 200 decelerates and is about to stop, the cylinder 50 drives the output rod 51 to extend towards the slide rail 100. The pendulum needle 41 is pushed and rotated by the slide 200 to press the buffer rod 421. The buffer rod 421 applies a buffering force to the slide 200 to reduce its moving speed, thereby reducing the impact force when the slide 200 and the blocking block 30 come into contact. When the slide 200 moves again, the cylinder 50 drives the output rod 51 to retract inward. The maximum height of the blocking block 30 and the pendulum needle 41 is less than the plane height of the slide rail 100. The pendulum needle 41 loses the thrust from the slide 200 and returns to its tilted state.

[0028] Compared with the prior art, the buffer stop device provided by this utility model is configured with a buffer assembly 40 and a blocking block 30 to reduce and stop the impact force of the slide 200 on the blocking block 30 when the slide 200 is about to stop, without affecting the slide 200's ability to move back on the slide rail 100. The mounting block 20 is used to fix the cylinder 50, and the guide groove 21 on the mounting block 20 guides the blocking block 30. The blocking block 30 blocks the slide 200, causing it to stop at a fixed point. The pendulum needle 41 in the buffer assembly 40 transmits the impact force of the moving slide 200 to the buffer 42, and the buffer 42 applies a buffering force to the slide 200 through the pendulum needle 41, reducing the impact force of the slide 200 on the blocking block 30. The cylinder 50 drives the output rod 51 to change the height of the blocking block 30, raising it when the slide 200 needs to stop at a fixed point and lowering it when the slide 200 continues to move.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A buffer stop device, which is arranged on the side of a slide rail, wherein the slide rail is provided with a sliding seat, and is characterized in that: The buffer stop device includes a fixed block fixedly mounted on the side of the slide rail, a mounting block fixedly mounted on the fixed block, a blocking block disposed above the mounting block, a buffer assembly movable on the blocking block, and a cylinder driving the blocking block. The fixed block is fixedly connected to the cylinder via the mounting block. One side of the mounting block is screwed to the fixed block, and the other side is screwed to the cylinder. The mounting block has a guide groove inside, which faces the slide rail. The blocking block includes a blocking block body, a mounting seat disposed above the blocking block body, a rotating shaft disposed on the blocking block body, a mounting hole disposed on the side wall of the mounting seat, and a buffer assembly disposed on the slide rail. The mounting base has a snap-fit ​​groove, the main body of the blocking block is inserted into the guide groove and moves along its groove wall when moving. The mounting base is located above the mounting block, and the rotating shaft is located on the side of the blocking block away from the slide rail. The buffer assembly includes a pendulum pin rotatably mounted on the rotating shaft and a buffer connected to the pendulum pin. The pendulum pin has an external washer that is screwed to the rotating shaft. The rotation of the pendulum pin transmits the impact force from the slide to the buffer. The buffer is fixedly mounted on the mounting base through the mounting hole. The buffer rod of the buffer is fixedly connected to one end of the pendulum pin. When the buffer rod is subjected to external force and retracts, it applies a buffering force to the pendulum pin. The end of the output rod of the cylinder is provided with a snap-fit ​​block, which snaps into the snap-fit ​​groove.

2. The cushioning stop device of claim 1, wherein: The fixing block is positioned below the slide rail.

3. The buffer stop device as described in claim 1, characterized in that: The cross-sectional shape of the guide groove is the same as that of the blocking block.

4. The cushioning stop device of claim 1, wherein: The snap-fit ​​groove is located below the mounting hole. The snap-fit ​​groove includes a main groove and a secondary groove located on the wall of the main groove. The diameter of the main groove is smaller than the diameter of the snap-fit ​​block and greater than or equal to the diameter of the output rod. The diameter of the secondary groove is greater than or equal to the diameter of the snap-fit ​​block. The snap-fit ​​block snaps into the secondary groove, and the output rod snaps into the main groove.

5. The cushioning stop device of claim 1, wherein: The oscillating needle faces away from the buffer and has a first inclined surface above the rotation axis and a second inclined surface below the rotation axis.

6. A cushioning stop as claimed in claim 5, wherein: When not pushed by the slide, the second inclined surface of the pendulum needle is parallel to the fixed block, and the first inclined surface is inclined toward the slide. When the pendulum needle is pushed by the slide, the pendulum needle rotates toward the side where the blocking block is located until the slide and the blocking block abut.

7. The cushioning stop device of claim 1, wherein: When the slide is about to stop decelerating, the cylinder drives the output rod to extend towards the slide rail. The pendulum needle is pushed and rotated by the slide to squeeze the buffer rod. The buffer rod applies a buffering force to the slide. When the slide continues to move, the cylinder drives the output rod to retract inward. The pendulum needle loses the thrust from the slide and returns to its tilted state.

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