Pinch brake roller device with force position feedback function and control method

Abstract

The invention provides a pinch brake roller device with a force position feedback function and a control method. The pinch brake roller device comprises an upper compression roller unit, a lower compression roller unit, a hydraulic cylinder unit, a speed measurement unit and a box body. The upper pressing roller unit and the lower pressing roller unit are used for clamping and braking a rolled piece, the hydraulic cylinder unit outputs and feeds back pressing force, and the speed measuring unit measures the clamping and conveying speed of the rolled piece in real time. The method comprises the steps that the pressure sensor detects the output pressure of the hydraulic cylinder, the encoder detects the real-time conveying speed of a rolled piece, and when the conveying speed difference value of the rolled piece is larger than a set threshold value, the output pressure of the hydraulic cylinder is adjusted. The device has the advantages that real-time detection and self-adaptive adjustment of the output pressure of the hydraulic cylinder and the rolled piece clamping and conveying speed can be achieved, and the stability and reliability of the clamping and conveying braking function of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of bar rolling technology, and in particular to a clamping brake roller device and control method with force and position feedback function. Background Technology

[0002] In the metallurgical field, stable feeding and precise braking of metal bars during continuous production (such as rolling, straightening, and shearing) are crucial for ensuring product quality and production efficiency. Traditional clamping and braking roller devices mostly employ mechanical or pneumatic clamping, with open-loop braking using servo motors. These technologies suffer from the following drawbacks: open-loop braking mechanisms are prone to unstable clamping / braking due to load variations, leading to sudden stops or slippage of the bars, causing scratches or even deformation on the bar surface; the lack of real-time speed feedback means that high-speed moving bars can easily stack or tail at the braking point, causing production line downtime. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a clamping brake roller device and control method with force and position feedback function, which can realize real-time detection and adaptive adjustment of hydraulic cylinder output pressure and workpiece clamping speed.

[0004] In a first aspect, embodiments of the present invention provide a clamping and braking roller device with force and position feedback function, comprising: an upper pressure roller unit, a lower pressure roller unit, a hydraulic cylinder unit, a speed measuring unit, and a housing, wherein the upper pressure roller assembly and the lower pressure roller assembly are capable of clamping and braking the rolled workpiece;

[0005] The upper pressure roller unit and the lower pressure roller assembly pass through the box in the horizontal direction; the hydraulic cylinder unit is located at the top of the box and can pass through the box to connect with the upper pressure roller unit; a speed measuring unit is installed on one outer wall of the box.

[0006] Furthermore, the upper pressure roller unit includes an upper drive gear, a telescopic universal joint, and an upper pressure roller, which are connected in sequence.

[0007] Furthermore, the lower pressure roller assembly includes a lower drive gear, a lower pressure roller, and a drive motor. The lower pressure roller, the lower drive gear, and the drive motor are connected in sequence, and the lower drive gear meshes with the upper drive gear to form a gear pair.

[0008] Furthermore, the hydraulic cylinder unit includes a hydraulic cylinder, a pressure sensor, a hinge, a connecting rod, and a swing arm. The hydraulic cylinder, pressure sensor, hinge, connecting rod, and swing arm are connected in sequence, and the upper pressure roller is rotatably connected to the swing arm through a bearing.

[0009] Furthermore, the speed measuring unit includes an upper roller assembly and a lower roller assembly. The upper roller assembly includes an upper roller, an upper support rod, an upper encoder, and an upper spring.

[0010] The lower roller assembly includes a lower roller, a lower support rod, a lower encoder, and a lower spring; the upper roller and the lower roller have the same outer diameter.

[0011] The upper support rod is equipped with an upper roller and an upper encoder at its end. The upper encoder can monitor the rotation speed of the upper roller in real time. The upper support rod is connected to the upper spring, which is mounted on the housing.

[0012] The lower support rod is equipped with a lower roller and a lower encoder at its end. The lower encoder can monitor the rotation speed of the lower roller in real time. The lower support rod is connected to the lower spring, which is mounted on the housing.

[0013] Secondly, embodiments of the present invention provide a control method for a pinch brake roller device with force-position feedback function, comprising:

[0014] S1. The output pressure of the hydraulic cylinder is detected and fed back in real time by the pressure sensor in the hydraulic cylinder unit. ;

[0015] S2. The upper and lower encoders in the speed measuring unit detect the angular velocities of the upper and lower rollers in real time, respectively, and calculate the real-time conveying speed of the workpiece based on the angular velocities of the upper and lower rollers. ;

[0016] S3. Based on the real-time conveying speed of the rolled piece Calculate the real-time conveying speed difference of the rolled piece ;

[0017] S4, when the real-time conveying speed difference of the rolled piece When the value exceeds the set threshold, the difference in real-time transmission speed will be used as the basis for calculation. Adjust the output pressure of the hydraulic cylinder.

[0018] The beneficial effects of the embodiments of the present invention are as follows:

[0019] 1. A pressure sensor was added to the hydraulic cylinder unit to realize real-time detection of braking pressure. The braking pressure can be adjusted at any time through pressure feedback. The overall structure is simple and compact, which improves clamping and braking capabilities.

[0020] 2. The addition of a speed measuring unit can detect the speed of the rolled piece after braking in real time. Combined with a pressure sensor, it can adaptively control the braking effect of the rolled piece. The overall structure is simple and improves the stability and reliability of the equipment's clamping and braking function.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a pinch brake roller device with force and position feedback function provided in an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a clamping brake roller device with force and position feedback function provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the upper and lower pressure roller units in a clamping brake roller device with force and position feedback function provided in an embodiment of the present invention.

[0027] Figure 4 A schematic diagram of the hydraulic cylinder unit and the upper pressure roller unit in a clamping brake roller device with force feedback function provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the speed measuring unit structure in a clamping brake roller device with force and position feedback function provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the housing in a clamping brake roller device with force and position feedback function provided in an embodiment of the present invention;

[0030] Figure 7 This is another side view of the box structure in a pinch brake roller device with force and position feedback function provided in an embodiment of the present invention;

[0031] Figure 8 This is a flowchart illustrating a control method for a clamping brake roller device with force-position feedback function, provided in an embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] The following is a detailed description of a clamping brake roller device with force and position feedback function provided by the present invention, with reference to the accompanying drawings.

[0035] like Figures 1-7 As shown, the clamping and braking roller device with force feedback function provided by the present invention includes: an upper pressure roller unit 1, a lower pressure roller unit 2, a hydraulic cylinder unit 3, a speed measuring unit 4, and a housing 5. The upper pressure roller assembly 1 and the lower pressure roller assembly 2 can realize the clamping and braking of the rolled piece 6.

[0036] The upper pressure roller unit 1 and the lower pressure roller assembly 2 pass through the box 5 in the horizontal direction; the hydraulic cylinder unit 3 is located at the top of the box 5 and can pass through the box 5 to connect with the upper pressure roller unit 1; a speed measuring unit 4 is provided on one side of the outer wall of the box.

[0037] Furthermore, in combination Figure 3 , Figure 4 , Figure 6 The upper pressure roller unit 1 includes an upper drive gear 11, a telescopic universal joint 12, and an upper pressure roller 13, which are connected in sequence.

[0038] Specifically, the first left shaft end structure 111 of the upper drive gear 11 is fixedly connected to the first right input end 121 of the telescopic universal joint 12, the first left output end 122 of the telescopic universal joint 12 is fixedly connected to the first shaft end structure 131 of the upper pressure roller 13, and the first shaft end structure 131 of the upper pressure roller 13 is rotatably connected to the hydraulic cylinder unit 3 through a bearing; the first right shaft end structure 112 of the upper drive gear 11 is rotatably connected to the first mounting hole 51 of the housing 5 through a bearing.

[0039] Combination Figure 3 , Figure 6 , Figure 7 The lower pressure roller assembly 2 includes a lower drive gear 21, a lower pressure roller 22 and a drive motor 23. The lower pressure roller 22, the lower drive gear 21 and the drive motor 23 are connected in sequence. The lower drive gear 21 meshes with the upper drive gear 11 to form a gear pair.

[0040] Specifically, the second left shaft end structure 211 of the lower drive gear 21 is fixedly connected to the second shaft end structure 221 of the lower pressure roller 2, and the second shaft end structure 221 of the lower pressure roller 22 is rotatably connected to the third mounting hole 53 of the housing 5 through a bearing; the second right shaft end structure 212 of the lower drive gear 21 is rotatably connected to the second mounting hole 52 of the housing 5 through a bearing, and the second right shaft end structure 212 of the lower drive gear 21 is fixedly connected to the output shaft 231 of the drive motor 23, and the drive motor 23 is fixedly connected to the rear mounting surface 59 of the housing 5.

[0041] Combination Figure 4 , Figure 6 The hydraulic cylinder unit 3 includes a hydraulic cylinder 31, a pressure sensor 32, a hinge 33, a connecting rod 35, and a swing arm 36. The hydraulic cylinder 31, pressure sensor 32, hinge 33, connecting rod 35, and swing arm 36 are connected in sequence, and the upper pressure roller 13 is rotatably connected to the swing arm 36 through a bearing.

[0042] Specifically, the hydraulic cylinder 31 is fixedly connected to the upper mounting surface 55 of the housing 5. The push rod 311 of the hydraulic cylinder 31 passes through the housing 5 and is fixedly connected to one end of the pressure sensor 32. The other end of the pressure sensor 32 is fixedly connected to one end of the hinge 33. The other end of the hinge 33 is rotatably connected to one end of the connecting rod 35 through the shaft pin 34. The other end of the connecting rod 35 is rotatably connected to the first shaft structure 361 of the swing arm 36. The first shaft end structure 131 of the upper pressure roller 13 is rotatably passed through the first support hole 362 of the swing arm 36 through the bearing. The second shaft structure 363 of the swing arm 36 is rotatably connected to the fourth mounting hole 54 of the housing 5 through the bearing.

[0043] Combination Figures 5-7 The speed measuring unit 4 includes an upper roller assembly and a lower roller assembly. The upper roller assembly includes an upper roller 41, an upper support rod 42, an upper encoder 43, and an upper spring 44. The lower roller assembly includes a lower roller 45, a lower support rod 46, a lower encoder 47, and a lower spring 48. The upper roller 41 and the lower roller 45 have the same outer diameter.

[0044] In the upper roller assembly, the upper support rod 42 is equipped with an upper roller 41 and an upper encoder 43. The upper encoder 43 can monitor the rotation speed of the upper roller 41 in real time. The upper support rod 42 is connected to the upper spring 44, and the upper spring 44 is installed on the housing 5.

[0045] In the lower roller assembly, the lower support rod 46 has a lower roller 45 and a lower encoder 47 installed at its end. The lower encoder 47 can monitor the rotation speed of the lower roller 45 in real time. The lower support rod 46 is connected to the lower spring 48, which is mounted on the housing 5.

[0046] Specifically, the upper roller 41 is rotatably connected to the first end structure 421 of the upper support rod 42, the first intermediate hole structure 422 of the upper support rod 42 is rotatably connected to the first front end support shaft 56 of the housing 5, the second end structure 423 of the upper support rod 42 is fixedly connected to one end of the upper spring 44, the other end of the upper spring 44 is fixedly connected to the first front end support 57 of the housing 5, and the upper encoder 43 is fixedly connected to the first front end side 424 of the upper support rod 42.

[0047] The lower roller 45 is rotatably connected to the third end structure 461 of the lower support rod 46. The second intermediate hole structure 462 of the lower support rod 46 is rotatably connected to the second front end support shaft 58 of the housing 5. The fourth end structure 463 of the lower support rod 46 is fixedly connected to one end of the lower spring 48. The other end of the lower spring 48 is fixedly connected to the second front end support 59 of the housing 5. The lower encoder 47 is fixedly connected to the second front end side 464 of the lower support rod 46.

[0048] Based on this, the working principle of the pinch brake roller device with force and position feedback function provided in this embodiment is as follows:

[0049] The upper pressure roller 13 and the lower pressure roller 22 are driven to rotate by the drive motor 23 through the upper drive gear 11, the telescopic universal joint 12, and the lower drive gear 21, so as to realize the clamping and braking of the workpiece 6. The upper pressure roller 13 is driven to press the workpiece 6 downward by the hydraulic cylinder 31 through the pressure sensor 32, the hinge 33, the connecting rod 35 and the swing arm 36.

[0050] During this process, when the workpiece 6 is clamped and braked by the upper pressure roller 13 and the lower pressure roller 22, the workpiece 6 can drive the upper roller 41 and the lower roller 45 to rotate. The upper encoder 43 and the lower encoder 47 in the speed measuring unit 4 monitor and feedback the conveying speed of the workpiece 6 in real time through the upper roller 41 and the lower roller 45, respectively. Since the pressure sensor 32 can monitor and feedback the output pressure of the hydraulic cylinder 31 in real time, the output pressure of the hydraulic cylinder 31 is adaptively adjusted to improve the quality, efficiency and stability of clamping and braking of the workpiece 6.

[0051] Example 2

[0052] Combination Figure 8 The present invention discloses a control method for a pinch brake roller device with force-position feedback function as described in Embodiment 1, comprising:

[0053] S1. The pressure sensor 32 in the hydraulic cylinder unit 3 detects and feeds back the output pressure of the hydraulic cylinder 31 in real time. .

[0054] S2. The upper encoder 43 and lower encoder 47 in the speed measuring unit 4 detect the angular velocities of the upper roller 41 and lower roller 45 in real time, respectively, and calculate the real-time conveying speed of the workpiece 6 based on the angular velocities of the upper roller 41 and lower roller 45. .

[0055] The angular velocity of the upper roller 41 is... The angular velocity of the lower roller at 45 degrees is Real-time conveying speed of rolled piece 6 The expression is:

[0056]

[0057] In the formula, The outer diameters of the upper roller 41 and the lower roller 45 are given.

[0058] S3. Based on the real-time conveying speed of the rolled piece 6 Calculate the real-time conveying speed difference of rolled piece 6 .

[0059] Among them, the real-time conveying speed difference of rolled piece 6 The expression is:

[0060]

[0061] In the formula, The conveying speed of the rolled piece 6 is preset by the user according to braking requirements.

[0062] In this embodiment, The value ranges from 40 m / s to 2 m / s.

[0063] S4, when the real-time conveying speed difference of the rolled piece 6 When the value exceeds the set threshold, the difference in real-time transmission speed will be used as the basis for calculation. Adjust the output pressure of hydraulic cylinder 31.

[0064] In this embodiment, the threshold value is set to 0.05m / s to 0.1m / s.

[0065] Furthermore, the output pressure adjustment amount of hydraulic cylinder 31 is as follows:

[0066]

[0067] In the formula, This is a constant set by an individual. It is the mass of rolled piece 6. It is the maximum allowable mass of rolled piece to be clamped.

[0068] In this embodiment, The value ranges from 0.2 to 0.5.

[0069] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered 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 pinch brake roller device with force and position feedback function, characterized in that, include: The upper pressure roller unit (1), the lower pressure roller unit (2), the hydraulic cylinder unit (3), the speed measuring unit (4) and the housing (5) are capable of clamping and braking the rolled piece (6). The upper pressure roller unit (1) and the lower pressure roller assembly (2) pass through the box (5) in the horizontal direction; the hydraulic cylinder unit (3) is set on the top of the box (5) and can pass through the box (5) to connect with the upper pressure roller unit (1); a speed measuring unit (4) is set on one side of the outer wall of the box (5).

2. The pinch brake roller device with force and position feedback function according to claim 1, characterized in that, The upper pressure roller unit (1) includes an upper drive gear (11), a telescopic universal joint (12) and an upper pressure roller (13), which are connected in sequence.

3. A pinch brake roller device with force and position feedback function according to claim 1, characterized in that, The lower pressure roller assembly (2) includes a lower drive gear (21), a lower pressure roller (22) and a drive motor (23). The lower pressure roller (22), the lower drive gear (21) and the drive motor (23) are connected in sequence. The lower drive gear (21) meshes with the upper drive gear (11) to form a gear pair.

4. A pinch brake roller device with force and position feedback function according to claim 1, characterized in that, The hydraulic cylinder unit (3) includes a hydraulic cylinder (31), a pressure sensor (32), a hinge (33), a connecting rod (35), and a swing arm (36). The hydraulic cylinder (31), pressure sensor (32), hinge (33), connecting rod (35), and swing arm (36) are connected in sequence, and the upper pressure roller (13) is rotatably connected to the swing arm (36) through a bearing.

5. A pinch brake roller device with force and position feedback function according to claim 1, characterized in that, The speed measuring unit (4) includes an upper roller assembly and a lower roller assembly. The upper roller assembly includes an upper roller (41), an upper support rod (42), an upper encoder (43), and an upper spring (44). The lower roller assembly includes a lower roller (45), a lower support rod (46), a lower encoder (47), and a lower spring (48). The upper roller (41) and the lower roller (45) have the same outer diameter. The upper support rod (42) is equipped with an upper roller (41) and an upper encoder (43) at its end. The upper encoder (43) can monitor the rotation speed of the upper roller (41) in real time. The upper support rod (42) is connected to the upper spring (44), and the upper spring (44) is installed on the housing (5). The lower support rod (46) is equipped with a lower roller (45) and a lower encoder (47) at its end. The lower encoder (47) can monitor the rotation speed of the lower roller (45) in real time. The lower support rod (46) is connected to the lower spring (48), which is mounted on the housing (5).

6. A control method for a pinch brake roller device with force-position feedback function according to any one of claims 1 to 5, characterized in that, include: S1. The pressure sensor (32) in the hydraulic cylinder unit (3) detects and feeds back the output pressure of the hydraulic cylinder (31) in real time. ; S2. The upper encoder (43) and lower encoder (47) in the speed measuring unit (4) detect the angular velocities of the upper roller (41) and lower roller (45) in real time, respectively, and calculate the real-time conveying speed of the workpiece (6) based on the angular velocities of the upper roller (41) and lower roller (45). ; S3. Based on the real-time conveying speed of the rolled piece (6) Calculate the real-time conveying speed difference of the rolled piece (6). ; S4, when the real-time conveying speed difference of the rolled piece (6) When the value exceeds the set threshold, the difference in real-time transmission speed will be used as the basis for calculation. Adjust the output pressure of the hydraulic cylinder (31).

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