Bending machine lead screw protection structure and bending machine thereof

Abstract

The utility model provides a bending machine lead screw protection structure and a bending machine thereof, and the protection structure comprises a sliding block which is installed on the bending machine in a sliding mode; the lead screw nut is in threaded connection with the lead screw; and the protection piece is connected to the lead screw nut in a sleeving mode, one end of the protection piece is connected with the sliding block, and when the sliding block inclines, the protection piece is bent, so that the axis of the lead screw nut and the axis of the lead screw are located on the same straight line all the time, and the lead screw operates normally. Through the arrangement of the protection piece, when the sliding block inclines, the protection piece is bent, so that it is guaranteed that the axis of the lead screw nut and the axis of the lead screw are located on the same straight line all the time, normal use of the lead screw is guaranteed, and meanwhile the lead screw can be protected from being bent and affecting use due to the fact that the lead screw nut is displaced due to bending of the sliding block.

Description

Technical Field

[0001] The present application relates to a protection structure, and more particularly to a bending machine screw rod protection structure and a bending machine thereof. Background Art

[0002] The main difference between the all-electric servo CNC bending machine and the general hydraulic CNC bending machine is that all motion axes are controlled by electric servo motors and rolling screws, and the hydraulic system is cancelled, and hydraulic oil is not used. The all-electric servo bending machine converts the rotational motion of the servo motor into linear motion, and outputs the bending pressure for bending the workpiece;

[0003] Most of the existing bending machines use a screw rod to drive the slider to move up and down to bend the workpiece. However, when the slider is skewed, it is easy to cause the screw rod to bend, affecting the normal operation of the bending machine. At the same time, repeated replacement of the screw rod will cause waste. Utility Model Content

[0004] The embodiment of the present application provides a bending machine screw rod protection structure and a bending machine thereof to solve the problems existing in the related technology. The technical solution is as follows:

[0005] In a first aspect, an embodiment of the present application provides a bending machine screw rod protection structure, comprising:

[0006] A slider is slidably installed on the bending machine;

[0007] A screw nut, the screw nut is connected to the screw thread;

[0008] A protective piece is sleeved on the screw nut, and one end of the protective piece is connected to the slider. When the slider is skewed, the protective piece bends so that the axis line of the screw nut and the axis line of the screw are always on the same straight line, so that the screw can operate normally.

[0009] In one embodiment,

[0010] Protective parts include:

[0011] A screw rod nut seat, the screw rod nut seat is sleeved on the screw rod nut, and the screw rod nut seat has a first through hole;

[0012] A spherical convex block is sleeved on the screw nut, the spherical convex block fits the screw nut seat, and the spherical convex block has a second through hole, which corresponds to the first through hole;

[0013] A spherical concave block, wherein the spherical concave block has a groove adapted to the spherical convex block, the spherical convex block fits the spherical concave block, and the protrusion of the spherical convex block is located in the groove;

[0014] A bolt is threadedly connected to the screw nut seat, the bolt passes through the first through hole and the second through hole respectively and is threadedly connected to the spherical concave block, and the spherical convex block is installed on the bending machine through the bolt;

[0015] The nut is threadedly connected to the bolt, and the nut fits tightly with the screw nut seat.

[0016] In a second aspect, an embodiment of the present application provides a bending machine, comprising:

[0017] A bending machine screw rod protection structure as described in any one of the above embodiments; and

[0018] A frame, on which a slider is slidably mounted;

[0019] A drive assembly, wherein the drive assembly is mounted on the frame;

[0020] A lead screw connected to a driving assembly;

[0021] The limit assembly is installed on the frame through a bracket, and the drive assembly is installed on the drive assembly to ensure smooth rotation of the lead screw.

[0022] In one embodiment,

[0023] The drive components include:

[0024] The reducer, the housing and the limit assembly of the reducer can be detachably installed, and the output shaft of the reducer is fixedly connected with the screw rod;

[0025] The servo motor is detachably mounted on the housing of the reducer, and the output shaft of the servo motor is connected to the reducer.

[0026] In one embodiment,

[0027] The limiter components include:

[0028] The bearing seat is fixedly mounted on the frame through a bracket, and a through hole is provided in the bearing seat;

[0029] The combined bearing is located in the through hole and is sleeved on the screw rod to radially limit the rotation of the screw rod.

[0030] In one embodiment,

[0031] Combined bearings include:

[0032] A mounting seat, the mounting seat is fixedly sleeved on the screw rod;

[0033] Deep groove ball bearing, the deep groove ball bearing is sleeved on the mounting seat;

[0034] Thrust ball bearing, the thrust ball bearing is sleeved on the mounting seat, and the thrust ball bearing is located outside the deep groove ball bearing;

[0035] The locking nut is threadedly connected to the mounting seat to eliminate the axial reverse clearance between the deep groove ball bearing and the thrust ball bearing.

[0036] In one embodiment,

[0037] The slide block is provided with a recessed portion for the screw rod to move.

[0038] In one embodiment,

[0039] One end of the lead screw away from the reducer is connected to a limit block.

[0040] In one embodiment, it further includes:

[0041] The stopper is installed on the frame and is used to limit the sliding position of the slider.

[0042] In one embodiment, it further includes:

[0043] The alarm switch is installed on the stopper. When the slider tilts, the alarm switch is touched.

[0044] The advantages or beneficial effects of the above technical solution include at least:

[0045] By setting the protective part, when the slider is skewed, the protective part bends, thereby ensuring that the axis line of the screw nut and the screw is always located on the same straight line to ensure the normal use of the screw. At the same time, the screw can be protected from displacement of the screw nut due to the bending of the slider, thereby causing the screw to bend and affecting its use.

[0046] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0048] Figure 1 It is a schematic diagram of the structure of the utility model;

[0049] Figure 2 for Figure 1 A schematic diagram of the side structure of the middle frame;

[0050] Figure 3for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0051] Figure 4 for Figure 3 Schematic diagram of the internal structure of the middle drive component, limit component and protection structure;

[0052] Figure 5 for Figure 4 A schematic diagram of the structure of the spherical convex block and the spherical concave block;

[0053] In the figure: 100, protection structure;

[0054] 110. Screw nut;

[0055] 120, protective part; 121, screw nut seat; 122, spherical convex block; 123, spherical concave block; 124, bolt; 125, nut;

[0056] 200. Bending machine;

[0057] 210, rack;

[0058] 220, driving assembly; 221, speed reducer; 222, servo motor;

[0059] 230, screw;

[0060] 240, limit assembly; 241, bearing seat; 242, deep groove ball bearing; 243, thrust ball bearing; 244, locking nut;

[0061] 250, stopper; 251, alarm switch;

[0062] 260. Slider. DETAILED DESCRIPTION

[0063] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0064] Figure 1-Figure 5 FIG. 2 shows a structural diagram of a bending machine 200 screw rod 230 protection structure 100 according to an embodiment of the present application. Figure 1-Figure 5 As shown, the protection structure 100 may include:

[0065] A slider 260, the slider 260 is slidably mounted on the bending machine 200;

[0066] The screw nut 110 is threadedly connected to the screw 230;

[0067] The protective member 120 is sleeved on the screw nut 110, and one end of the protective member 120 is connected to the slider 260. When the slider 260 is skewed, the protective member 120 bends so that the axis line of the screw nut 110 and the axis line of the screw 230 are always on the same straight line, so that the screw 230 can operate normally.

[0068] In this embodiment, under the action of the threaded connection between the screw nut 110 and the screw 230, when the screw 230 rotates, the screw nut 110 moves up and down along the screw 230 under the action of the protective member 120. When the position of the screw 230 or the screw nut 110 is offset, the axis of the main body of the screw 230 is offset compared to the bending machine 200. At this time, the protective member 120 is bent so that the axis of the screw nut 110 and the axis of the main body of the screw 230 are always located on the same straight line, so as to ensure the normal rotation of the main body of the screw 230 and the screw nut 110, so as to protect the screw 230 from being bent and damaged due to the offset of the slider 260.

[0069] Furthermore, the protective member 120 is fixedly sleeved on the screw nut 110, and one end thereof is fixedly connected to the slider 260. When the slider 260 is not skewed, the screw 230 rotates to drive the screw nut 110 to move up and down along the screw 230, so that the slider 260 can move up and down. During the normal operation of the screw nut 110, the protective member 120 will not bend. Only when the slider 260 is displaced or skewed, the protective member 120 will bend.

[0070] Furthermore, the bending machine 200 performs bending operation on the workpiece by moving the slider 260 up and down;

[0071] By setting the protective member 120, when the slider 260 is skewed, the protective member 120 bends, thereby ensuring that the axis lines of the screw nut 110 and the screw 230 are always located on the same straight line to ensure the normal use of the screw 230. At the same time, the screw 230 can be protected from displacement of the screw nut 110 due to the bending of the slider 260, thereby causing the screw 230 to bend and affect its use.

[0072] like Figure 1-Figure 5 As shown, in one embodiment,

[0073] The protective member 120 includes:

[0074] A screw nut seat 121, the screw nut seat 121 is sleeved on the screw nut 110, and the screw nut seat 121 has a first through hole;

[0075] A spherical protrusion 122, which is sleeved on the screw nut 110, and fits with the screw nut seat 121. The spherical protrusion 122 has a second through hole, which corresponds to the first through hole;

[0076] The spherical concave block 123 has a groove adapted to the spherical protrusion 122, the spherical protrusion 122 fits the spherical concave block 123, and the protrusion of the spherical protrusion 122 is located in the groove;

[0077] Bolt 124, the bolt 124 is threadedly connected with the screw nut seat 121, the bolt 124 passes through the first through hole and the second through hole respectively and is threadedly connected with the spherical concave block 123, and the spherical convex block 122 is installed on the bending machine 200 through the bolt 124;

[0078] The nut 125 is threadedly connected to the bolt 124 , and the nut 125 is fitted to the screw nut seat 121 .

[0079] In this embodiment, the screw nut seat 121 and the spherical protrusion 122 are fixedly sleeved on the screw nut 110, and the screw nut 110 and the spherical protrusion 122 are provided with a first through hole and a second through hole, and the first through hole and the second through hole correspond to each other. The bolt 124 passes through the first through hole and the second through hole and is fixed to the slider 260, and is fixed to the bending machine 200 together with the spherical concave block 123, and the spherical protrusion 122, the spherical concave block 123 and the screw nut seat 121 are connected by the nut 125. The clearance is locked to ensure that the spherical protrusion 122 fits the groove. When the slider 260 is tilted, the spherical concave block 123 deflects. At this time, the spherical protrusion 122 rotates in the groove to bend between the spherical protrusion 122 and the spherical concave block 123. At this time, the bolt 124 deviates in the first through hole and the second through hole to ensure that the spherical protrusion 122 can be effectively bent, thereby ensuring that the axis of the screw nut 110 and the axis of the main body of the screw 230 are always on the same straight line;

[0080] Furthermore, the protrusion of the spherical protrusion 122 is a spherical structure, and the groove is also a spherical structure, which can refer to the ball chain structure. A rubber gasket is provided between the nut 125 and the screw nut seat 121. After the nut 125 is fastened between the spherical protrusion 122, the spherical concave block 123 and the screw nut seat 121, when the slider 260 is offset, the rubber gasket can produce a certain deformation to ensure that the bolt 124 can produce a certain angle of offset in the first through hole and the second through hole, so that the spherical protrusion 122 and the spherical concave block 123 can be bent;

[0081] It should be noted that the spherical protrusion 122 is fixedly sleeved on the screw nut 110 , and the spherical concave block 123 has a through hole for the screw 230 to pass through, and the through hole does not contact the screw 230 .

[0082] Figure 1-Figure 5 FIG. 2 shows a structural block diagram of a bending machine 200 according to an embodiment of the present invention. Figure 1-Figure 5 As shown, the bending machine 200 may include:

[0083] A protective structure 100 of a screw rod 230 of a bending machine 200 as described in any one of the above embodiments; and

[0084] The frame 210, the slider 260 is slidably mounted on the frame 210;

[0085] A driving assembly 220, wherein the driving assembly 220 is mounted on the frame 210;

[0086] A screw rod 230, the screw rod 230 is connected to the driving assembly 220;

[0087] The limiting assembly 240 is mounted on the frame 210 through a bracket, and the driving assembly 220 is mounted on the driving assembly 220 to ensure that the screw rod 230 rotates smoothly.

[0088] In this embodiment, the driving component 220 is directly connected to the screw rod 230. When the driving component 220 drives the screw rod 230 to rotate, under the action of the protective part 120 and the screw nut seat 121 on the slider 260, the slider 260 moves up and down to bend the sheet metal workpiece. When the driving component 220 drives the screw rod 230 to rotate, the limiting component 240 limits the rotation of the screw rod 230 to prevent the screw rod 230 from bending or deflecting during rotation.

[0089] By directly connecting the drive assembly 220 with the screw rod 230 and eliminating the synchronous wheel mechanism, the problems of high noise and large positioning error of the synchronous wheel mechanism are solved. The clearance of the bearing in the limit assembly 240 is locked by the limit assembly 240. Compared with the prior art, the synchronous wheel mechanism is used for more precise positioning, and the problem of excessive tolerance in the bending angle of the workpiece is reduced. It has the characteristics of low noise, small repeated positioning error, simple and reliable mechanism and low cost.

[0090] like Figure 3-Figure 4 As shown, in one embodiment,

[0091] The drive assembly 220 includes:

[0092] A reducer 221, a housing of the reducer 221 and a stop assembly 240 are detachably mounted, and an output shaft of the reducer 221 is fixedly connected to a screw rod 230;

[0093] The servo motor 222 is detachably mounted on the housing of the reducer 221 , and the output shaft of the servo motor 222 is connected to the reducer 221 .

[0094] In this embodiment, when the servo motor 222 rotates, the output shaft of the servo motor 222 drives the reducer 221 to rotate, the reducer 221 housing is connected to the servo motor 222, and the reducer 221 housing is connected to the limit assembly 240, ensuring that the servo motor 222 can drive the screw rod 230 to rotate through the reducer 221, and the servo motor 222, the reducer 221 and the screw rod 230 are directly connected. The servo motor 222 rotates to drive the slider 260 to move up and down, and the slider 260 drives the upper mold to move up and down to bend the sheet metal workpiece, thereby improving the accuracy of repeated positioning.

[0095] like Figure 3-Figure 4 As shown, in one embodiment,

[0096] The limiting assembly 240 includes:

[0097] A bearing seat 241, the bearing seat 241 is fixedly mounted on the frame 210 through a bracket, and a through hole is formed in the bearing seat 241;

[0098] The combined bearing is located in the through hole and is sleeved on the screw rod 230 to radially limit the rotation of the screw rod 230 .

[0099] In this embodiment, when the servo motor 222 rotates, the output shaft of the servo motor 222 drives the reducer 221 to rotate, the reducer 221 housing is connected to the servo motor 222, and the reducer 221 housing is connected to the limit assembly 240, ensuring that the servo motor 222 can drive the screw rod 230 to rotate through the reducer 221, and the servo motor 222, the reducer 221 and the screw rod 230 are directly connected. The servo motor 222 rotates to drive the slider 260 to move up and down, and the slider 260 drives the upper mold to move up and down to bend the sheet metal workpiece, thereby improving the accuracy of repeated positioning.

[0100] like Figure 3-Figure 4 As shown, in one embodiment,

[0101] Combined bearings include:

[0102] A mounting seat, the mounting seat is fixedly sleeved on the screw rod 230;

[0103] A deep groove ball bearing 242, wherein the deep groove ball bearing 242 is sleeved on the mounting seat;

[0104] A thrust ball bearing 243, which is sleeved on the mounting seat and is located outside the deep groove ball bearing 242;

[0105] The locking nut 244 is threadedly connected to the mounting seat to eliminate the axial reverse clearance between the deep groove ball bearing 242 and the thrust ball bearing 243.

[0106] In this embodiment, the cross-section of the mounting seat is a T-shaped structure, the deep groove ball bearing 242 and the thrust ball bearing 243 are sleeved on the mounting seat and locked by a locking nut 244, the deep groove ball bearing 242 limits the radial freedom of the screw rod 230, the thrust ball bearing 243 bears the axial pressure of the locking nut 244, the locking nut 244 eliminates the axial reverse clearance, so that there is no clearance between the deep groove ball bearing 242 and the thrust ball bearing 243, reducing the reverse clearance of the movement of the slider 260, solving the problem of excessive accuracy of the bending angle of the workpiece caused by repeated positioning errors of the synchronous wheel mechanism, and providing a certain degree of protection for the screw rod 230.

[0107] like Figure 1 As shown, in one embodiment,

[0108] The slider 260 is provided with a recessed portion for the screw rod 230 to move.

[0109] In this embodiment, by setting the recessed portion, when the screw rod 230 rotates, under the joint action of the screw nut 110 and the protective member 120, the screw rod 230 can move in the recessed portion to ensure the sliding track of the slider 260;

[0110] Furthermore, the recessed portion also has a certain limiting effect on the movement distance of the screw rod 230 , and has a certain limiting effect on the movement length of the slider 260 .

[0111] like Figure 1 As shown, in one embodiment,

[0112] One end of the screw rod 230 away from the reducer 221 is connected to a limit block.

[0113] In this embodiment, by providing a limit block, when one end of the screw rod 230 rotates to the screw rod nut 110 , the screw rod 230 is prevented from falling out of the screw rod nut 110 .

[0114] like Figure 1 As shown, in one embodiment, it also includes:

[0115] The stopper 250 is installed on the frame 210 and is used to limit the sliding position of the slider 260.

[0116] In this embodiment, the top cross-sectional view of the stopper 250 is a C-shaped structure, and the slider 260 slides in the C-shaped groove of the stopper 250. When the slider 260 is tilted at an excessive angle, it will touch the stopper 250, thereby blocking the movement of the slider 260.

[0117] like Figure 1 As shown, in one embodiment, it also includes:

[0118] The alarm switch 251 is installed on the stopper 250 . When the slider 260 tilts, the alarm switch 251 is touched.

[0119] In this embodiment, the alarm switch is installed inside the C-shaped groove of the slider 260. When the slider 260 touches the stopper 250, the slider 260 touches the alarm switch to cause the bending machine 200 to generate an alarm, so that the user can stop the operation of the bending machine 200 in time.

[0120] The functions of each module in each device of the embodiment of the present utility model can refer to the corresponding description in the above method, which will not be repeated here.

[0121] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0122] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0123] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A bending machine screw rod protection structure, characterized in that: include: A slider, wherein the slider is slidably mounted on the bending machine; A screw nut, wherein the screw nut is threadedly connected to the screw; A protective member is sleeved on the screw nut, one end of which is connected to the slider. When the slider is skewed, the protective member bends so that the axis line of the screw nut and the axis line of the screw are always on the same straight line, so that the screw can operate normally.

2. A bending machine screw rod protection structure according to claim 1, characterized in that: The protective member comprises: A screw nut seat, the screw nut seat is sleeved on the screw nut, and the screw nut seat has a first through hole; A spherical convex block, wherein the spherical convex block is sleeved on the screw nut, the spherical convex block is in contact with the screw nut seat, and the spherical convex block has a second through hole, and the second through hole corresponds to the first through hole; A spherical concave block, wherein the spherical concave block has a groove adapted to the spherical convex block, the spherical convex block fits the spherical concave block, and the protrusion of the spherical convex block is located in the groove; A bolt, wherein the bolt is threadedly connected to the screw nut seat, the bolt passes through the first through hole and the second through hole respectively and is threadedly connected to the spherical concave block, and the spherical convex block is installed on the bending machine through the bolt; A nut is threadedly connected to the bolt and fits with the screw nut seat.

3. A bending machine, characterized in that: include: A bending machine screw rod protection structure as described in any one of claims 1-2; as well as A frame, on which the slider is slidably mounted; A drive assembly, wherein the drive assembly is mounted on the frame; A screw rod connected to the driving assembly; A limit assembly is installed on the frame through a bracket, and the drive assembly is installed on the drive assembly to enable the screw rod to rotate smoothly.

4. A bending machine according to claim 3, characterized in that: The drive assembly comprises: A reducer, wherein the housing of the reducer and the limit assembly are detachably mounted, and the output shaft of the reducer is fixedly connected to the screw rod; A servo motor is detachably mounted on the housing of the reducer, and an output shaft of the servo motor is connected to the reducer.

5. A bending machine according to claim 4, characterized in that: The limiting component comprises: A bearing seat, the bearing seat is fixedly mounted on the frame through a bracket, and the bearing seat has a through hole; A combined bearing is located in the through hole and is sleeved on the screw rod to radially limit the rotation of the screw rod.

6. A bending machine according to claim 5, characterized in that: The combined bearing comprises: A mounting seat, the mounting seat is fixedly sleeved on the screw rod; A deep groove ball bearing, wherein the deep groove ball bearing is sleeved on the mounting seat; A thrust ball bearing, wherein the thrust ball bearing is sleeved on the mounting seat and is located outside the deep groove ball bearing; A locking nut is threadedly connected to the mounting seat to eliminate the axial reverse clearance between the deep groove ball bearing and the thrust ball bearing.

7. A bending machine according to claim 5, characterized in that: The sliding block is provided with a recessed portion for the screw rod to move.

8. A bending machine according to claim 5, characterized in that: One end of the screw rod away from the reducer is connected to a limiting block.

9. A bending machine according to claim 5, characterized in that: Also includes: A stopper is mounted on the frame and is used to limit the sliding position of the slider.

10. A bending machine according to claim 9, characterized in that: Also includes: An alarm switch is installed on the stopper, and when the sliding block is tilted, the alarm switch is touched.

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