Roll forming machine

Abstract

The utility model provides a roll forming machine. The roll forming machine comprises a frame body, a power mechanism, an upper roll forming die and a lower roll forming die, the power mechanism comprises a first driving motor and a second driving motor, the first driving motor is in transmission connection with the upper roll-forming mold and used for driving the upper roll-forming mold to rotate, and the upper roll-forming mold drives the rim and the lower roll-forming mold to rotate to complete the whole rim roll-forming process; the second driving motor is in transmission connection with the lower roll forming mold and is used for driving the lower roll forming mold to rotate during initial roll forming; the output power of the first driving motor is greater than that of the second driving motor; the first driving motor is fixedly arranged on the frame body; the upper roll forming die and the lower roll forming die are arranged up and down in the vertical direction and used for roll forming of the rim. According to the roll forming machine, two-motor reverse rotation roll forming is changed into single-motor roll forming, the phenomenon that the contact face of the rim and the roll forming die is scratched due to motor dragging is avoided, and the roll forming quality of the rim is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel rim processing, in particular to a rolling machine. Background Art

[0002] In the existing wheel rim rolling process, the upper and lower rolling molds are driven by dual-frequency reduction motors of the same specifications. When the motor output torque and speed are constant, the difference in the concave and convex model surfaces of the upper and lower rolling molds causes the actual output linear speed to be inconsistent, which will increase the relative resistance of the upper and lower spindles, causing the motor to stall and stop, unable to work, or scraping and damaging the workpiece and mold surface. At the same time, the side guide mechanism of the conventional hard-rail rolling machine achieves guidance in the rolling of rims of different diameters by sliding the slider in the hard rail. However, the hard rail material is generally a self-lubricating guide plate made of a relatively low hardness material such as copper or aluminum. As the equipment works frequently, the guide plate will wear, resulting in gaps and unstable guidance, which reduces the processing accuracy of the equipment and thus reduces the rolling quality of the rim. Utility Model Content

[0003] The purpose of the utility model is to provide a rolling machine to solve at least one of the above technical problems existing in the prior art.

[0004] In order to solve the above technical problems, the utility model provides a roll forming machine, comprising: a frame, a power mechanism, an upper roll forming mold and a lower roll forming mold;

[0005] The power mechanism includes a first drive motor and a second drive motor. The first drive motor is connected to the upper rolling mold for driving the upper rolling mold to rotate, and the upper rolling mold drives the rim and the lower rolling mold to rotate to complete the entire rim rolling process; the second drive motor is connected to the lower rolling mold for driving the lower rolling mold to rotate during initial rolling.

[0006] The output power of the first drive motor is greater than the output power of the second drive motor;

[0007] The first driving motor is fixedly mounted on the frame;

[0008] The upper rolling mold and the lower rolling mold are arranged vertically up and down and are used for rolling forming the rim.

[0009] Furthermore, the first drive motor is a variable frequency reduction motor, and the output power of the variable frequency reduction motor is 30KW.

[0010] Furthermore, the second drive motor is a three-phase asynchronous motor, the output power of the three-phase asynchronous motor is 4KW, and the three-phase asynchronous motor is provided with a frequency converter.

[0011] Furthermore, it also includes a bed, the output shaft of the second drive motor is fixedly connected to the input shaft of the reducer, and the reducer is fixedly arranged on the bed.

[0012] Preferably, the upper roller mold is fixedly sleeved on the upper main shaft; the lower roller mold is fixedly sleeved on the lower main shaft;

[0013] The upper spindle and the lower spindle are rotatably arranged on the bed.

[0014] Furthermore, the output shaft of the first drive motor is fixedly connected to a first coupling, and the other end of the first coupling is transmission-connected to the upper main shaft via a universal coupling.

[0015] Furthermore, the output shaft of the reducer is fixedly connected to a second coupling, and the other end of the second coupling is transmission-connected to the lower main shaft via a universal coupling.

[0016] Furthermore, it also includes a jacking cylinder, the body of the jacking cylinder is hinged to the bed, and the telescopic end of the jacking cylinder is hinged to the lower spindle for driving the lower spindle upward toward or downward away from the upper spindle.

[0017] Preferably, rotary side guide mechanisms are provided on both sides of the upper spindle and the lower spindle for axial and radial positioning during rim rolling.

[0018] The rotary side guide mechanism includes a side guide device, a drive assembly and a mounting seat assembly;

[0019] The side guide device includes a guide wheel assembly, which is used to limit the radial and axial position of the rim during rolling;

[0020] The side guide device is reciprocatingly swingably arranged on the mounting seat assembly, and is used to approach the wheel rim during rolling or to stay away from the wheel rim during unloading;

[0021] The driving assembly is used to drive the side guide device to swing back and forth;

[0022] The mounting seat assembly is fixedly arranged on the bed.

[0023] Furthermore, the mounting seat assembly includes an upper mounting seat and a lower mounting seat spaced apart from each other; the upper mounting seat is used for mounting and fixing the drive assembly, and the lower mounting seat is used for mounting and fixing the side guide device.

[0024] Furthermore, the side guide device further includes a rotating shaft, and the rotating shaft is fixedly arranged on the lower mounting seat;

[0025] The axis of the rotating shaft is arranged parallel to the axis of the main shaft of the rolling machine;

[0026] A swing frame is rotatably sleeved on the rotating shaft.

[0027] Furthermore, a guide wheel seat is provided on a side of the swing frame away from the rotating shaft, and the guide wheel seat can move along the axis of the rotating shaft to adjust the position of the guide wheel assembly.

[0028] Preferably, the guide wheel assembly includes a guide wheel shaft, and the guide wheel shaft is fixedly arranged on the guide wheel seat;

[0029] A shaft sleeve is rotatably sleeved on the guide wheel shaft.

[0030] Furthermore, the shaft sleeve outer shell is provided with a middle guide wheel and / or a side guide wheel;

[0031] The middle guide wheel is rotatably sleeved on the shaft sleeve, and the outer contour surface of the middle guide wheel is adapted to the middle contour surface of the roll-forming rim, and is used to cooperate with the upper and lower roll-forming molds of the roll-forming machine to complete the roll forming and radial limiting of the rim during roll forming;

[0032] Two side guide wheels are provided axially spaced apart along the guide wheel shaft and with adjustable spacing;

[0033] The contact surface between the side guide wheel and the rim is set in a cone shape, which is used for axial and radial limitation of the two ends of the rim during rolling;

[0034] A plurality of spacers are provided between the side guide wheels for adjusting the distance between the two side guide wheels.

[0035] Furthermore, the side guide wheels are symmetrically and spaced apart on both sides of the middle guide wheel.

[0036] Furthermore, the side guide device further includes an adjustment component for driving the guide wheel seat to move along the axis of the rotating shaft;

[0037] The adjusting assembly includes an adjusting screw and a fixing seat, wherein the adjusting screw is arranged parallel to the sliding direction of the guide wheel seat;

[0038] An open long slot is provided on one side of the swing frame, and an ear plate matching the width of the open long slot is provided on the guide wheel frame;

[0039] One end of the adjusting screw extends into the open long slot and is threadedly connected to the ear plate, and the other end is rotatably arranged and passes through the fixing seat;

[0040] The fixing seat is fixedly connected to the swing frame.

[0041] Preferably, the driving assembly includes a telescopic mechanism, the telescopic end of the telescopic mechanism is hinged to the swing frame, and is used to drive the side guide mechanism to rotate around the rotating shaft;

[0042] The body of the telescopic mechanism is hinged with a lift.

[0043] The telescopic mechanism is a telescopic cylinder, a telescopic oil cylinder or an electric push rod.

[0044] Furthermore, the elevator is fixedly arranged on the upper mounting seat, and the telescopic end of the elevator is hinged to the body of the telescopic mechanism, which is used to drive the telescopic mechanism to move along the telescopic direction to achieve the initial position required for rolling rims of different diameters.

[0045] Furthermore, it also includes a control system, which includes a PLC controller for automatically controlling the working state of the power mechanism, controlling and adjusting the working speed of the jacking cylinder, and automatically controlling the operation of the side guide mechanism;

[0046] The first drive motor and the second drive motor are electrically connected to the PLC controller.

[0047] By adopting the above technical solution, the utility model has the following beneficial effects:

[0048] The utility model provides a rolling machine with the following advantages:

[0049] 1. The roll forming machine is changed from two motors with the same output power rotating in opposite directions to a single motor roll forming, which better maintains the consistency of the rotation speed of the upper roll forming die and the lower roll forming die during rolling, avoids the two motors dragging each other and causing a stall, which affects the service life of the motors; it also avoids the scratching of the contact surface between the rim and the roll forming die caused by the dragging of the motors, and improves the roll forming quality of the rim.

[0050] 2. At the same speed, the output torque of the 30KW variable frequency reduction motor is greater than that of the 22KW variable frequency reduction motor. The corresponding extrusion pressure that the motor can withstand increases, thereby increasing the working speed of the jacking cylinder and improving work efficiency.

[0051] 3. The reduction in the total output power of the motor also saves electricity, achieves energy conservation and emission reduction, and reduces production costs.

[0052] 4. The side guide device swings around the axis of the rotating shaft to achieve guidance and limitation of the rim rolling, which solves the problem of unstable guidance caused by sliding wear of the guide plate in conventional self-lubricating guide plate type side guide devices, thereby reducing the equipment accuracy. It greatly improves the guidance and limitation stability of the side guide device and the processing accuracy of the equipment, thereby improving the rolling quality of the rim. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 A front view of a roll forming machine provided in Example 1 of the present utility model;

[0055] Figure 2 A three-dimensional diagram of a roll forming machine provided in Example 1 of the present utility model;

[0056] Figure 3 A three-dimensional view of a roll forming machine provided in Example 1 of the present utility model from another direction;

[0057] Figure 4 This is a front view of a power mechanism in a rolling machine provided in Example 1 of the present utility model;

[0058] Figure 5 for Figure 4 Left view of;

[0059] Figure 6 for Figure 5 Middle AA section view;

[0060] Figure 7 A left side view of a rolling machine provided in Example 1 of the present utility model;

[0061] Figure 8 A perspective view of a rotary roll forming side guide mechanism in a roll forming machine provided in Example 1 of the present utility model;

[0062] Figure 9 A cross-sectional view of a side guide device of a rolling machine provided in Example 1 of the present utility model, in which only the middle guide wheel is installed;

[0063] Figure 10 A cross-sectional view of the combined installation of a middle guide wheel and a side guide wheel in a side guide device of a rolling machine provided in Example 1 of the present utility model;

[0064] Figure 11 for Figure 8 Enlarged view of point A in the middle;

[0065] Figure 12 This is a cross-sectional view of a side guide device in a rolling machine provided in Example 2 of the present invention, in which only side guide wheels are installed.

[0066] Reference numerals:

[0067] 1-frame; 2-frequency reduction motor; 3-three-phase asynchronous motor; 4-speed reducer; 5-first coupling; 6-second coupling; 7-universal coupling; 8-bed; 9-cover; 10-upper roller mold; 11-upper spindle; 12-lower roller mold; 13-lower spindle; 14-rim; 15-lifting cylinder; 20-side guide mechanism; 21-side guide device; 211-rotating shaft; 212-swing frame; 2121-opening long slot; 213-guide wheel seat; 2131- Ear plate; 214-fastening screw; 215-guide wheel assembly; 2151-guide wheel shaft; 2152-sleeve; 2153-middle guide wheel; 2154-side guide wheel; 2155-locking nut; 2156-bearing; 2157-bearing sleeve; 216-adjusting assembly; 2161-adjusting screw; 2162-fixed seat; 23-drive assembly; 231-telescopic cylinder; 232-lifter; 24-mounting seat assembly; 241-upper mounting seat; 242-lower mounting seat. DETAILED DESCRIPTION

[0068] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0069] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. 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] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0071] The present invention will be further explained below in conjunction with specific implementation methods.

[0072] Example 1

[0073] like Figure 1-3 As shown, a roll forming machine provided in this embodiment includes: a frame 1, a power mechanism, an upper roll forming mold 10 and a lower roll forming mold 12;

[0074] The power mechanism includes a first drive motor and a second drive motor;

[0075] The first drive motor is in transmission connection with the upper rolling mold 10, and is used to drive the upper rolling mold 10 to rotate, and the upper rolling mold 10 drives the rim 14 and the lower rolling mold 12 to rotate to complete the entire rolling process of the rim 14;

[0076] The second drive motor is in transmission connection with the lower roll forming mold 12 and is used to drive the lower roll forming mold 12 to rotate during the initial roll forming;

[0077] The output power of the first drive motor is greater than the output power of the second drive motor;

[0078] The first driving motor is fixedly mounted on the frame 1;

[0079] The upper rolling mold 10 and the lower rolling mold 12 are arranged vertically one above the other and are used for roll forming the rim 14 .

[0080] The first driving motor is a variable frequency reduction motor 2, and the output power of the variable frequency reduction motor 2 is 30KW.

[0081] The second driving motor is a three-phase asynchronous motor 3 , the output power of the three-phase asynchronous motor 3 is 4KW, and the three-phase asynchronous motor 3 is provided with a frequency converter.

[0082] The upper rolling mold 10 is fixedly sleeved on the upper main shaft 11 ; the lower rolling mold 12 is fixedly sleeved on the lower main shaft 13 .

[0083] In addition, the machine bed also includes a bed 8 , an output shaft of the three-phase asynchronous motor 3 is fixedly connected to an input shaft of a reducer 4 , and the reducer 4 is fixedly arranged on the bed 8 .

[0084] The upper spindle 11 and the lower spindle 13 are rotatably disposed on the bed 8 .

[0085] like Figure 4-6 As shown, the output shaft of the variable frequency reduction motor 2 is fixedly connected to the first coupling 5 , and the other end of the first coupling 5 is transmission-connected to the upper main shaft 11 via a universal coupling 7 .

[0086] The output shaft of the reducer 4 is fixedly connected to the second coupling 6 , and the other end of the second coupling 6 is transmission-connected to the lower main shaft 13 via a universal coupling 7 .

[0087] A cover 9 is fixedly provided on the bed 8 for protecting the first coupling 5 , the second coupling 6 and the universal coupling 7 ; the three-phase asynchronous motor 3 and the reducer 4 are fixedly provided on the cover 9 .

[0088] In addition, it also includes a jacking cylinder 15, the body of the jacking cylinder 15 is hinged to the bed 8, and the telescopic end of the jacking cylinder 15 is hinged to the lower spindle 13 for driving the lower spindle 13 upward toward or downward away from the upper spindle 11.

[0089] like Figure 7-8 As shown, a rotary rolling guide mechanism is also provided on both sides of the upper spindle 11 and the lower spindle 13 for axial and radial positioning of the rim 14 during rolling;

[0090] The rotary roller type side guide mechanism includes a side guide device 21, a drive assembly 23 and a mounting seat assembly 24;

[0091] The side guide device 21 includes a guide wheel assembly 215, which is used to limit the radial and axial position of the rim 14 during rolling;

[0092] The side guide device 21 is reciprocatingly mounted on the mounting seat assembly 24 and is used to move the device closer to the wheel rim 14 during rolling or away from the wheel rim 14 during unloading.

[0093] The driving assembly 23 is used to drive the side guide device 21 to swing.

[0094] The mounting seat assembly 24 includes an above-ground mounting seat 241 and a lower mounting seat 242 spaced apart from each other. The upper mounting seat 241 is used for mounting and fixing the drive assembly 23, and the lower mounting seat 242 is used for mounting and fixing the side guide device 21.

[0095] The mounting seat assembly 24 is fixedly mounted on the bed 8 .

[0096] The side guide device 21 further includes a rotating shaft 211 , which is fixedly mounted on the lower mounting seat 242 ;

[0097] The axis of the rotating shaft 211 is arranged parallel to the axes of the upper spindle 11 and the lower spindle 13 of the rolling machine;

[0098] A swing frame 212 is rotatably mounted on the rotating shaft 211 .

[0099] A guide wheel seat 213 is provided on one side of the swing frame 212 away from the rotating shaft 211. The guide wheel seat 213 can move along the axis of the rotating shaft 211 to adjust the position of the guide wheel seat 213 and the guide wheel assembly 215.

[0100] After the position of the guide wheel seat 213 is adjusted, the guide wheel seat 213 and the swing frame 212 are fastened together by the fastening screws 214; an oblong hole is opened on the swing frame 212 for avoiding the fastening screws 214 when the guide wheel seat 213 moves.

[0101] The guide wheel assembly 215 includes a guide wheel shaft 2151, which is fixed to the guide wheel seat 213;

[0102] A shaft sleeve 2152 is rotatably mounted on the guide wheel shaft 2151 .

[0103] According to the rolling process requirements of rims 14 of different specifications, the shaft sleeve 2152 is rotatably provided with a middle guide wheel 2153 or fixedly and spaced apart with a side guide wheel 2154, or the middle guide wheel 2153 and the side guide wheel 2154 can be provided in combination.

[0104] Among them, the middle guide wheel 2153 belongs to the mold, and the outer contour surface of the middle guide wheel 2153 is adapted to the middle surface of the rolled rim 14; the middle guide wheel 2153 cooperates with the upper rolling mold 10 and the lower rolling mold 12 of the rolling machine to complete the rolling forming of the rim 14, and limits the rim 14 axially and radially during the rolling process.

[0105] In this embodiment, only the middle guide wheel 2153 is provided on the outer surface of the shaft sleeve 2152 on one side, and the middle guide wheel 2153 and the side guide wheel 2154 are provided on the outer surface of the shaft sleeve 2152 on the other side.

[0106] Specifically, such as Figure 9 As shown, the middle guide wheel 253 is sleeved in the middle position of the shaft sleeve 2152, and a bearing sleeve 2157 and a bearing 2156 are sleeved between the shaft sleeve 2152 and the middle guide wheel 253; and a locking nut 2155 is provided on one side of the bearing sleeve 2157, and the locking nut 2155 cooperates with the limit platform protruding from the shaft sleeve 2152 to axially fix the bearing sleeve 2157.

[0107] like Figure 10 As shown, a middle guide wheel 2153 and two side guide wheels 2154 are sleeved on the outer side of the shaft sleeve 2152, and the side guide wheels 2154 are symmetrically arranged on both sides of the middle guide wheel 2153;

[0108] The side guide wheel 2154 is arranged in a cone shape on the side in contact with the rim 14, and is used to limit the axial and radial positions of both ends of the rim 14 during rolling;

[0109] A plurality of spacers are provided between the side guide wheels 2154 for adjusting the distance between the two side guide wheels 2154 .

[0110] According to the rolling requirements of rims 14 of different widths, different numbers and thicknesses of spacers are selected to adjust the spacing between the two side guide wheels 2154; locking nuts 2155 are provided on the outside of the two side guide wheels 2154. After the positions of the two side guide wheels 2154 are adjusted, the side guide wheels 2154 are fastened to the shaft sleeves 2152 with locking nuts.

[0111] like Figure 11As shown, the side guide device 21 further includes an adjustment assembly 216 for driving the guide wheel seat 213 to move along the axis of the rotating shaft 211;

[0112] The adjustment assembly 216 includes an adjustment screw 2161 and a fixing seat 2162. The adjustment screw 2161 is arranged parallel to the sliding direction of the guide wheel seat 213.

[0113] An open long slot 2121 is provided on one side of the swing frame 212, and an ear plate 2131 matching the width of the open long slot 2121 is provided on the guide wheel seat 213;

[0114] One end of the adjusting screw 2161 extends into the open slot 2121 and is threadedly connected to the ear plate 2131, and the other end is rotatably disposed through the fixing seat 2162;

[0115] The fixing seat 2162 is fixedly connected to the swing frame 212 .

[0116] One end of the adjusting screw 2161 extending out of the fixing seat 2162 is provided with a clamping portion for clamping a tool such as a wrench.

[0117] The clamping portion is a regular quadrilateral or a regular hexagon, etc., which is convenient for the wrench to clamp and rotate.

[0118] Specifically, first loosen the fastening screw 214 that fastens the swing frame 212 and the guide wheel seat 213, then rotate the adjusting screw 2161, and the adjusting screw 2161 drives the guide wheel seat 213 and the guide wheel assembly 215 to move back and forth along the swing frame 212 through the ear plate 2131 on the guide wheel seat 213, so that the middle guide wheel 2153 or the side guide wheel 2154 reaches the required limit position, and then tighten the fastening screw 214 to fasten the swing frame 212 and the guide wheel seat 213.

[0119] By fine-tuning the position of the guide wheel seat 213 by adjusting the assembly 216, the position of the guide wheel assembly 215 can be aligned with the surface of the rim 14, thereby improving the accuracy of guiding and limiting the rim 14 and the rolling accuracy of the rim 14.

[0120] The driving assembly 23 includes a telescopic mechanism, the telescopic end of which is hinged to the swing frame 212 and is used to drive the side guide device 21 to rotate around the rotating shaft 211;

[0121] The body of the telescopic mechanism is hinged with an elevator 232 .

[0122] In this embodiment, the telescopic mechanism is a telescopic cylinder 231 .

[0123] The elevator 232 is fixedly mounted on the upper mounting seat 241 , and the telescopic end of the elevator 232 is hinged to the body of the telescopic cylinder 231 , and is used to drive the telescopic cylinder 231 to move along the telescopic direction to achieve the initial position required for rolling rims 14 of different diameters.

[0124] The provision of the elevator 232 improves the accuracy of the side guide device 21 reaching the initial position, thereby improving the accuracy of the side guide device 21 in guiding and limiting the rim 14.

[0125] Specifically, the stroke of the telescopic cylinder 231 is fixed. When the telescopic end of the elevator 232 is extended a long distance, the telescopic cylinder 231 body is closer to the upper spindle 11 and the lower spindle 13 of the rolling machine. Correspondingly, the guide wheel assembly 215 can reach a position closer to the upper spindle 11 and the lower spindle 13 of the rolling machine during rolling, and can guide and limit the rim 14 with a smaller diameter; conversely, when the telescopic end of the elevator 232 is extended a short distance, the telescopic cylinder 231 body is farther away from the upper spindle 11 and the lower spindle 13 of the rolling machine. Correspondingly, the guide wheel assembly 215 is farther away from the upper spindle 11 and the lower spindle 13 of the rolling machine during rolling, and can guide and limit the rim 14 with a larger diameter.

[0126] During operation, the extension distance of the telescopic end of the elevator 232 is manually adjusted according to the diameter of the rim 14 of different models of products, so that the swing frame 212 and the guide wheel assembly 215 are located in the set initial position; then the adjusting screw 2161 is rotated to adjust the position of the guide wheel seat 213 so that the guide wheel assembly 215 is facing the rim 14 profile; then the lifting cylinder 15 lifts the lower main shaft 13 and the rim 14 up, and when the rim 14 approaches the upper rolling mold 10 of the upper main shaft 11, the telescopic ends of the telescopic cylinders 231 on both sides are extended at the same time, driving the swing frame 212, the guide wheel seat 213 and the guide wheel assembly 215 to rotate inward around the axis of the rotating shaft 211, so that the middle guide wheel 2153 and the side guide wheel 2154 are close to the rim 14, forming radial and axial guidance and limitation for the rim 14 when the rim 14 rotates and rolls.

[0127] Bearings are also provided between the rotating shaft 211 and the swing frame 212, and between the guide wheel shaft 2151 and the shaft sleeve.

[0128] In addition, it also includes a control system, which includes a PLC controller (not shown) for automatically controlling the working states of the variable frequency reduction motor 2 and the three-phase asynchronous motor 3, controlling and adjusting the working speed of the lifting cylinder 15, and automatically controlling the working of the telescopic cylinder 231;

[0129] The variable frequency reduction motor 2 and the three-phase asynchronous motor 3 are both electrically connected to the PLC controller.

[0130] In this embodiment, the variable frequency reduction motor 2 is a variable frequency reduction motor 2 with an output power of 30KW and a reduction ratio of 7.86; the three-phase asynchronous motor 3 is a three-phase asynchronous motor 3 with an output power of 4KW, and the reduction ratio of the reducer 4 connected to the three-phase asynchronous motor 3 is 5.7.

[0131] In the prior art, the rolling machine uses two variable frequency reduction motors with an output power of 22KW each. According to the torque calculation formula: T = 9550*P / n, where T is torque, P is output power, and n is speed; when the speed n is the same, the output torque of the 30KW variable frequency reduction motor 2 is T1, and the output torque of the 22KW variable frequency reduction motor is T2, then T1 / T2 = P1 / P2 = 30 / 22 = 1.36, and the torque of the variable frequency reduction motor 2 with an output power of 30KW is 1.36 times that of the variable frequency reduction motor with an output power of 22KW.

[0132] During operation, the 30KW variable-frequency reduction motor 2 and the 4KW three-phase asynchronous motor 3 start simultaneously, driving the upper spindle 11 and lower spindle 13 in opposite directions, respectively. The lifting cylinder 15 drives the lower spindle 13, which in turn moves the wheel rim upward. Once the wheel rim contacts the upper roll-forming mold 10, the pressure from the lifting cylinder 15 increases the friction between the upper and lower roll-forming molds 10 and 12, increasing the torque of the corresponding motors. The frequency converter on the three-phase asynchronous motor 3 feeds the torque value back to the controller. When the controller compares the torque value of the three-phase asynchronous motor 3 and determines that it exceeds the set torque value, the PLC controller issues a stop signal, stopping the 4KW three-phase asynchronous motor 3. The 30KW variable-frequency reduction motor 2 continues to drive the upper spindle 11. Under the action of friction, the upper roll-forming mold 10 drives the wheel rim and lower roll-forming mold 12, completing the wheel rim rolling process. The upper rolling mold 10, the rim and the lower rolling mold 12 are driven by a single motor to rotate to complete the rolling of the rim, avoiding the phenomenon of the motors dragging each other and the motors stopping when the two motors work at the same time, and also avoiding the problem of scratches on the rim and the mold surface during the dragging process.

[0133] Example 2

[0134] This embodiment is basically the same as embodiment 1, except that:

[0135] like Figure 12 As shown, only two side guide wheels 2154 are provided on the shaft sleeves 2152 of the guide wheel assemblies 215 on both sides, which are used for axial and radial limiting of the rim 14 during rolling.

[0136] According to the rolling process requirements of the rim 14, an appropriate guide wheel installation combination is selected, which greatly improves the versatility of the side guide device 21 assembly.

[0137] The utility model provides a rolling machine with the following advantages:

[0138] 1. The roll forming machine is changed from two motors with the same power rotating in opposite directions to a single motor driving the roll forming. This better maintains the consistency of the rotational speed of the upper and lower roll forming dies during rolling, avoids the two motors dragging each other and causing a stall, which affects the service life of the motors; it also avoids the scratching of the contact surface between the rim and the roll forming die caused by the dragging of the motors, and improves the roll forming quality of the rim.

[0139] 2. At the same speed, the torque of the 30KW variable frequency reduction motor is greater than that of the 22KW variable frequency reduction motor. The extrusion pressure that the motor can withstand increases, which can increase the working speed of the jacking cylinder and improve work efficiency.

[0140] 3. The reduction in the total output power of the motor also saves electricity, achieves energy conservation and emission reduction, and reduces production costs.

[0141] 4. The side guide device swings around the axis of the rotating shaft to achieve guidance and limitation of the rim rolling, which solves the problem of unstable guidance caused by sliding wear of the guide plate in conventional self-lubricating guide plate type side guide devices, thereby reducing the equipment accuracy. It greatly improves the guidance and limitation stability of the side guide device and the processing accuracy of the equipment, thereby improving the rolling quality of the rim.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rolling machine, characterized in that include: Frame, power mechanism, upper rolling mold and lower rolling mold; The power mechanism includes a first drive motor and a second drive motor; The first driving motor is in transmission connection with the upper rolling mold, and is used to drive the upper rolling mold to rotate, and the upper rolling mold drives the rim and the lower rolling mold to rotate to complete the entire rim rolling process; The second driving motor is in transmission connection with the lower rolling mold and is used to drive the lower rolling mold to rotate during initial rolling; The output power of the first drive motor is greater than the output power of the second drive motor; The first driving motor is fixedly mounted on the frame; The upper rolling mold and the lower rolling mold are arranged vertically up and down and are used for rolling forming the rim.

2. The rolling machine according to claim 1, characterized in that The first drive motor is a variable frequency reduction motor, and the output power of the variable frequency reduction motor is 30KW.

3. The rolling machine according to claim 1, characterized in that The second drive motor is a three-phase asynchronous motor with an output power of 4KW. The three-phase asynchronous motor is provided with a frequency converter.

4. The rolling machine according to claim 1, wherein The machine also includes a bed, wherein the output shaft of the second drive motor is fixedly connected to the input shaft of the reducer, and the reducer is fixedly arranged on the bed.

5. The rolling machine according to claim 4, characterized in that The upper roller mold is fixedly sleeved on the upper main shaft; the lower roller mold is fixedly sleeved on the lower main shaft; The upper spindle and the lower spindle are rotatably arranged on the bed.

6. The rolling machine according to claim 5, characterized in that The output shaft of the first drive motor is fixedly connected to a first coupling, and the other end of the first coupling is transmission-connected to the upper main shaft via a universal coupling.

7. The rolling machine according to claim 5, characterized in that The output shaft of the reducer is fixedly connected to a second coupling, and the other end of the second coupling is transmission-connected to the lower main shaft via a universal coupling.

8. The rolling machine according to claim 5, characterized in that It also includes a jacking cylinder, the body of which is hinged to the bed, and the telescopic end of which is hinged to the lower spindle for driving the lower spindle upward toward or downward away from the upper spindle.

9. The rolling machine according to claim 5, characterized in that Rotary side guide mechanisms are also provided on both sides of the upper spindle and the lower spindle for axial and radial positioning during rim rolling. The rotary side guide mechanism includes a side guide device, a drive assembly and a mounting seat assembly; The side guide device includes a guide wheel assembly, which is used to limit the radial and axial position of the rim during rolling; The side guide device is reciprocatingly swingably arranged on the mounting seat assembly, and is used to approach the wheel rim during rolling or to stay away from the wheel rim during unloading; The driving assembly is used to drive the side guide device to swing back and forth; The mounting seat assembly is fixedly arranged on the bed.

10. The roll forming machine according to claim 8, wherein It also includes a control system, which includes a PLC controller for automatically controlling the working state of the power mechanism, controlling and adjusting the working speed of the jacking cylinder, and automatically controlling the operation of the side guide mechanism; The first drive motor and the second drive motor are electrically connected to the PLC controller.

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