Connecting roller mechanical arm

Abstract

The invention discloses a connecting roller mechanical arm. Comprising a frame; at least one connecting arm is pivoted in the frame through a pin shaft; the pin shaft is pivoted to the middle section of the connecting arm; the front section of the connecting arm forwards extends out of the frame, and a connecting roller concave part is arranged on the front section of the connecting arm; the rear section of the connecting arm is positioned in the frame; and a connecting arm adjusting device is arranged on the frame corresponding to the rear end of the connecting arm, and is used for controlling the connecting arm to be at a first working position or a second working position. According to the roller receiving mechanical arm, the mechanical arm can directly stretch into a rolling mill to receive a roller on the outer side of the rolling mill, the roller does not need to be loaded into a roller bin from the lower portion of the rolling mill for receiving, the roller changing problem of a housing type rolling mill is solved, the roller changing operation of the rolling mill is greatly simplified, and the roller changing efficiency is improved.

Description

Technical Field

[0001] This invention relates to a roll-changing robotic arm, and more particularly to a roll-changing robotic arm suitable for use in a roll-changing mill. Background Technology

[0002] When the rolls of a rolling mill wear out or when product specifications are changed, new rolls need to be replaced. For roll replacement on short stress lines, the movable base is first removed, and then the rolling mill is hoisted onto the roll replacement device. The roll bin, located on the roll replacement device, is inserted into the rolling mill from the bottom to receive the old rolls. However, this method is not suitable for arch-type rolling mills because the lower part of an arch-type rolling mill is enclosed, making it impossible to hoist the mill from above onto the roll replacement device equipped with the roll bin. Summary of the Invention

[0003] To address the above problems, the present invention aims to provide a roller receiving robotic arm.

[0004] To achieve the above objectives, the roller receiving robotic arm of the present invention includes a frame; At least one connecting arm is pivotally connected within the frame via a pin; the pin is pivotally connected to the middle section of the connecting arm; The front section of the connecting arm extends forward out of the frame, and a receiving roller recess is provided on the front section of the connecting arm; The rear section of the arm is located within the frame; An arm adjustment device is provided on the frame corresponding to the rear end of the arm. The adjustment device is used to control the arm to be in the first working position or the second working position.

[0005] Furthermore, the adjusting device includes: A crossbeam is provided between the frames on the limiting plate. Guide blocks are provided on both sides of the crossbeam. Longitudinal guide grooves are provided on the inner side of the frame corresponding to both ends of the crossbeam. The crossbeam is slidably disposed in the guide grooves through the guide blocks on both sides. An eccentric shaft is provided, which is a three-section stepped shaft, wherein the center of the small diameter section is not collinear with the center of the large and medium diameter sections; the large diameter cylindrical section is located on the outside of the frame and is equipped with an adjusting rod; the medium diameter cylindrical section is fitted with the inner hole of the copper sleeve and the copper sleeve is installed on the frame. The guide blocks on both sides of the crossbeam are provided with elongated oval adjustment slots in the middle, and the small diameter section of the eccentric shaft is set in the adjustment slots. The lower surface of the beam abuts against the rear end of the connecting arm.

[0006] Furthermore, the crossbeam abuts against the rear end of the connecting arm via an angle adjustment device; the angle adjustment device includes: A stepped hole is provided in the middle of the crossbeam; the lower section of the stepped hole has a threaded sleeve; an adjusting bolt has a threaded section at the lower end; the lower section of the adjusting bolt is screwed into the threaded sleeve, and the lower end of the adjusting bolt abuts against the rear end of the connecting arm. A cover is provided at the upper opening of the stepped hole; a guide hole is provided in the center of the cover; A guide sleeve with an edge is provided in the guide hole, and the edge of the guide sleeve is located on the lower surface of the cover. The middle and upper sections of the adjusting bolt are smooth sections, with the middle section of the adjusting bolt fixed inside the guide sleeve; the upper section of the adjusting bolt extends upward out of the guide sleeve; and an elastic component is fitted onto the adjusting bolt between the guide sleeve and the threaded sleeve.

[0007] Furthermore, a keyway is provided on the major diameter cylindrical section of each eccentric shaft; a connecting block is provided on the major diameter cylindrical section corresponding to each eccentric shaft, and the connecting block is connected to the keyway on the major diameter cylindrical section through a convex key; a U-shaped adjusting rod is provided, and the two ends of the adjusting rod are connected to the two connecting blocks. The cylindrical section of the middle diameter of each eccentric shaft mates with the inner hole of the copper sleeve, which is mounted on the frame.

[0008] Furthermore, there are two connecting arms, arranged vertically on the frame.

[0009] Furthermore, the connecting arm consists of two parallel arms, which are integrally connected by a centrally located pin cylinder, with the pin located inside the pin cylinder. Adjustment plates are provided at the tail ends of the two arms, and the arm adjustment device is provided corresponding to the adjustment plates.

[0010] Furthermore, the receiving roller recess consists of a V-shaped receiving groove and a limiting surface at the front of the two arms; the V-shaped receiving groove contacts the moving labyrinth ring of the roll on three sides, and the limiting surface is higher than the bottom surface of the V-shaped receiving groove.

[0011] The roll-receiving robotic arm of the present invention can directly extend into the rolling mill from the outside of the mill to receive the rolls, without having to be loaded into the roll bin from the bottom of the mill. This not only solves the roll-changing problem of the arch-type rolling mill, but also greatly simplifies the roll-changing operation and improves the roll-changing efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the adjusting rod of the present invention when it is in the low position.

[0013] Figure 2 for Figure 1 A cross-sectional view.

[0014] Figure 3 This is a schematic diagram of the structure of the adjusting rod of the present invention when it is in the high position.

[0015] Figure 4 for Figure 3 A cross-sectional view.

[0016] Figure 5 for Figure 4 A schematic diagram of the middle arm after the roller is attached.

[0017] Figure 6 This is a cross-sectional view of the beam section.

[0018] Figure 7 This is a schematic diagram of the connecting arm.

[0019] Figure 8 This is a schematic diagram showing the location of the guide groove.

[0020] Figure 9 This is a structural schematic diagram of the crossbeam.

[0021] Figure 10 This is a schematic diagram of the eccentric shaft.

[0022] Figure 11 This is a schematic diagram of the connecting block.

[0023] Figure 12 This is a three-dimensional schematic diagram of the present invention.

[0024] Figure 13 This is a schematic diagram of the structure of the present invention installed on a cross track. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] This invention aims to provide a roller receiving robotic arm, which includes a frame; at least one receiving arm is pivotally connected to the frame via a pin, and the number and form of the receiving arms can be designed as needed, either one or two. Considering the specific use on a rolling mill, it is advisable to use two receiving arms, one above the other; the pin is pivotally connected to the middle section of the receiving arm; the front section of the receiving arm extends forward out of the frame, and a roller receiving recess is provided on the front section of the receiving arm; the rear section of the receiving arm is located inside the frame; a receiving arm adjustment device is provided on the frame corresponding to the rear end of the receiving arm, and the adjustment device is used to control the receiving arm to be in a first working position or a second working position.

[0030] like Figures 1 to 12 As shown, one embodiment of the roller receiving robotic arm of the present invention includes at least: a lower arm 1, an upper arm 2, a pin 3, a limiting rod 4, an upper adjusting rod 5, a lower adjusting rod 6, a frame 7, a connecting shaft 8, a connecting block 9, a pad 10, an eccentric shaft 11, a copper sleeve 12, a crossbeam 13, a cover 14, an adjusting bolt 15, a guide sleeve 16, an elastic component 17, a threaded sleeve 18, etc.

[0031] The lower arm 1 and upper arm 2 are fork-shaped frames with pin holes in the middle, two arms at the front, and an adjustment plate at the rear. A V-shaped receiving groove and a limiting surface are provided at the front of each arm. The V-shaped receiving groove contacts the moving labyrinth ring of the roll on three sides, and the limiting surface is higher than the bottom surface of the V-shaped receiving groove. The lower arm 1 and upper arm 2 are hinged to the frame 7 via pins 3.

[0032] The upper adjusting rod 5 and the lower adjusting rod 6 are fixedly connected to the connecting shaft 8. The connecting shaft 8 is installed on the connecting block 9 by means of a washer 10 and bolts.

[0033] A rectangular key is provided on the connecting block 9. The eccentric shaft 11 is a three-section stepped shaft, wherein the center of the small diameter section is not collinear with the center of the large and medium diameter sections. The large diameter cylindrical section is provided with a keyway to cooperate with the connecting block 9, and the medium diameter cylindrical section cooperates with the inner hole of the copper sleeve 12. The copper sleeve 12 is installed on the frame 7.

[0034] Guide blocks are provided on both sides of the crossbeam 13, which slide in cooperation with the guide groove on the frame 7; adjustment slots are provided on both sides of the crossbeam 13, which are oblong holes that fit with the minor diameter of the eccentric shaft 11; and a stepped hole is provided in the middle of the crossbeam 13.

[0035] The threaded sleeve 18 is fitted with the adjusting bolt 15 and installed below the intermediate stepped hole of the crossbeam 13. The cover 14 is fitted with the guide sleeve 16 and installed above the intermediate stepped hole of the crossbeam 13. An elastic component 17 is provided between the guide sleeve 16 and the threaded sleeve 18.

[0036] When the upper adjusting rod 5 and the lower adjusting rod 6 are moved, the eccentric shaft 11 is driven to rotate. Since the small diameter section of the eccentric shaft 11 is eccentric to the large and medium diameter sections, the small diameter section will rotate within a large circle (the diameter of the large circle is: the diameter of the small diameter section + the eccentricity * 2), which cooperates with the elongated hole adjustment slots on both sides of the crossbeam 13 to drive the frame 7 to adjust up and down.

[0037] The adjusting bolt 15 is installed in the threaded sleeve 18, and its position can be adjusted up and down according to the working needs. The lower part of the adjusting bolt 15 contacts the adjusting plate on the lower arm 1 and the upper arm 2, which determines the angle and position of the lower arm 1 and the upper arm 2.

[0038] During operation, the upper adjusting rod 5 and the lower adjusting rod 6 are moved to adjust the position of the crossbeam 13 and the adjusting bolt 15 as needed for changing the rollers, thereby adjusting the angle and position of the lower arm 1 and the upper arm 2.

[0039] The adjusting bolt 15 is installed in the crossbeam 13 through the elastic component 17. It can play a buffering and protective role when the rolls are loaded on the lower arm 1 and the upper arm 2. For rolls of different specifications (weights), the position of the adjusting bolt 15 can be adjusted to adjust the angle and position of the lower arm 1 and the upper arm 2.

[0040] Figure 13 This is a schematic diagram of the structure of the present invention installed on a cross track. As shown in the figure, two transport vehicle bases and two roller receiving vehicles of the present invention are arranged in a cross pattern on the cross track.

[0041] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Many other changes and modifications made without departing from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0042] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A roller receiving robotic arm, characterized in that, Includes the framework; At least one connecting arm is pivotally connected within the frame via a pin; the pin is pivotally connected to the middle section of the connecting arm; The front section of the connecting arm extends forward out of the frame, and a receiving roller recess is provided on the front section of the connecting arm; The rear section of the arm is located within the frame; An arm adjustment device is provided on the frame corresponding to the rear end of the arm. The adjustment device is used to control the arm to be in the first working position or the second working position.

2. The roller receiving robotic arm as described in claim 1, characterized in that, The adjustment device includes: A crossbeam is provided between the frames on the limiting plate. Guide blocks are provided on both sides of the crossbeam. Longitudinal guide grooves are provided on the inner side of the frame corresponding to both ends of the crossbeam. The crossbeam is slidably disposed in the guide grooves through the guide blocks on both sides. An eccentric shaft is provided, which is a three-section stepped shaft, wherein the center of the small diameter section is not collinear with the center of the large and medium diameter sections; the large diameter cylindrical section is located on the outside of the frame and is equipped with an adjusting rod; the medium diameter cylindrical section is fitted with the inner hole of the copper sleeve and the copper sleeve is installed on the frame. The guide blocks on both sides of the crossbeam are provided with elongated oval adjustment slots in the middle, and the small diameter section of the eccentric shaft is set in the adjustment slots. The lower surface of the beam abuts against the rear end of the connecting arm.

3. The roller receiving robotic arm as described in claim 2, characterized in that, The crossbeam is connected to the rear end of the connecting arm via an angle adjustment device; the angle adjustment device includes: A stepped hole is provided in the middle of the crossbeam; the lower section of the stepped hole has a threaded sleeve; an adjusting bolt has a threaded section at the lower end; the lower section of the adjusting bolt is screwed into the threaded sleeve, and the lower end of the adjusting bolt abuts against the rear end of the connecting arm. A cover is provided at the upper opening of the stepped hole; a guide hole is provided in the center of the cover; A guide sleeve with an edge is provided in the guide hole, and the edge of the guide sleeve is located on the lower surface of the cover. The middle and upper sections of the adjusting bolt are smooth sections, with the middle section of the adjusting bolt fixed inside the guide sleeve; the upper section of the adjusting bolt extends upward out of the guide sleeve; and an elastic component is fitted onto the adjusting bolt between the guide sleeve and the threaded sleeve.

4. The roller receiving robotic arm as described in claim 2, characterized in that, Each eccentric shaft has a keyway on its major diameter cylindrical section; a connecting block is provided on each eccentric shaft's major diameter cylindrical section, and the connecting block is connected to the keyway on the major diameter cylindrical section through a convex key; a U-shaped adjusting rod is provided, with both ends of the adjusting rod connected to the two connecting blocks. The cylindrical section of the middle diameter of each eccentric shaft mates with the inner hole of the copper sleeve, which is mounted on the frame.

5. The roller receiving robotic arm as described in claim 1, characterized in that, There are two connecting arms, arranged vertically on the frame.

6. The roller receiving robotic arm as described in claim 1, characterized in that, The connecting arm consists of two parallel arms, which are integrally connected by a central pin cylinder, with the pin located inside the pin cylinder. Adjustment plates are provided at the tail ends of the two arms, and the arm adjustment device is provided corresponding to the adjustment plates.

7. The roller receiving robotic arm as described in claim 6, characterized in that, The receiving roller recess consists of a V-shaped receiving groove and a limiting surface at the front of the two arms; the V-shaped receiving groove contacts the moving labyrinth ring of the roll on three sides, and the limiting surface is higher than the bottom surface of the V-shaped receiving groove.

8. The roller receiving robotic arm as described in claim 1, characterized in that, Three rollers are provided under the frame, with a flat roller on the rear side, a V-shaped guide roller on the other rear side, and a V-shaped guide roller in the middle of the front.

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