Numerical control bending machine with plate correcting mechanism

Abstract

The utility model relates to the technical field of bending machines, in particular to a numerical control bending machine with a plate correcting mechanism, which comprises a bending machine body, a feeding plate is arranged in the bending machine body, a centering clamping component is arranged above the feeding plate, a feeding roll shaft is arranged on the rear side of the feeding plate, and a feeding roll shaft is arranged on the rear side of the feeding roll shaft. A downward pressing mechanism is arranged above the feeding roller shaft, one end of the feeding roller shaft is fixedly connected with the power output end of a feeding motor, and the feeding motor is fixedly installed on the bending machine body. The centering clamping assembly comprises a centering plate arranged above the feeding plate, the bottom of the centering plate is fixedly connected with a limiting sliding block, a lead screw nut is arranged in the limiting sliding block, a two-way lead screw is installed in the lead screw nut, and one end of a first bevel gear is fixedly connected with the power output end of a servo motor. The two sides of the plate can be clamped, friction of the balls is reduced when the plate moves, and normal feeding of the plate is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a CNC bending machine with a plate correcting mechanism. Background Art

[0002] A CNC bending machine is a machine tool used for bending metal sheets. It is usually composed of several main parts: a mainframe structure, a CNC system, a drive system, a mold system, and a control system. During the sheet bending process, sheet correction is an important step, which directly affects the accuracy and efficiency of the bending. The purpose of sheet correction is to ensure that the sheet has the correct size, shape, and position before bending, so as to reduce bending errors and improve bending accuracy. Through correction, the initial deformation, warping, or distortion of the sheet can be eliminated, so that the sheet can be accurately aligned with the mold during bending, thereby achieving precise bending.

[0003] During the transportation of the plate, deformation is inevitable. If the plate is bent directly without correction, it will affect the overall bending effect.

[0004] The existing public technical solution, with announcement number CN219292448U, discloses a CNC bending machine with a plate correction mechanism. By installing a pressure roller that can move up and down in the CNC bending machine, the height of the pressure roller is adjusted according to the specifications of the plate to correct and repair the plate.

[0005] When the above technical solution is actually implemented, the plate is corrected between the pressure roller and the rotatable roller shaft below the pressure roller, but the direction of movement of the plate cannot be controlled. If the direction of movement of the plate between the pressure roller and the roller shaft is offset, the accuracy of the plate will also be reduced when bending. Summary of the Invention

[0006] The purpose of the present utility model is to provide a CNC bending machine with a plate correction mechanism, which can clamp both sides of the plate, and when the plate moves, the ball reduces friction without affecting the normal feeding of the plate, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a CNC bending machine with a plate correction mechanism, comprising a bending machine body, a feed plate is provided inside the bending machine body, and a centering clamping assembly is provided above the feed plate, a feed roller is provided on the rear side of the feed plate, and a pressing mechanism is provided above the feed roller, one end of the feed roller is fixedly connected to the power output end of the feed motor, and the feed motor is fixedly installed on the bending machine body;

[0008] The centering clamping assembly includes a centering plate arranged above the feed plate, and the bottom of the centering plate is fixedly connected to a limiting slider, a screw nut is arranged inside the limiting slider, and a bidirectional screw is installed inside the screw nut, a second bevel gear is fixedly installed on the surface of the bidirectional screw, and a first bevel gear is arranged on one side of the second bevel gear, and one end of the first bevel gear is fixedly connected to the power output end of the servo motor.

[0009] Preferably, an open groove is provided on one side of the centering plate close to the vertical center line of the bending machine body, and a plurality of equally spaced and evenly distributed balls are installed inside the open groove.

[0010] Preferably, the open groove and the ball form a semi-enclosed structure, and the surface of the ball protrudes from the end surface of the centering plate.

[0011] Preferably, the pressing mechanism includes a pressing cylinder arranged inside the bending machine body, and the pressing cylinder is fixedly mounted on the pressing mechanism by bolts, and a mounting bracket is provided at the telescopic end of the pressing cylinder.

[0012] Preferably, a lower pressing roller is provided inside the mounting bracket via a bearing, and a cleaning scraper is provided on the top of the lower pressing roller.

[0013] Preferably, the top of the cleaning scraper is fixed on the mounting bracket, and the bottom of the cleaning scraper is in contact with the top of the lower pressure roller.

[0014] Preferably, the lower pressure roller and the feed roller shaft are parallel to each other, and the axes of the feed roller shaft and the lower pressure roller are located in the same vertical plane, and a bending mold is provided on one side of the feed roller shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The centering clamping assembly can adjust the distance between the two sets of centering plates according to the width of the sheet, so that the centering plates can clamp both sides of the sheet. The balls on the centering plates are in close contact with the sheet. When the sheet moves, the balls can roll without affecting the normal feeding of the sheet.

[0017] 2. Through the setting of the pressing mechanism, the height of the pressing roller can be adjusted according to the thickness of the sheet, and the sheet can be fed stably in conjunction with the feed roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a structural diagram of the centering plate of the present invention;

[0021] Figure 3 For the utility model Figure 2 A magnified view of middle A;

[0022] Figure 4 It is a structural schematic diagram of the pressing mechanism of the present utility model.

[0023] Description of reference numerals:

[0024] 1. Press brake body; 2. Feed roller; 3. Feed plate; 4. Centering clamping assembly; 401. Centering plate; 402. Servo motor; 403. First bevel gear; 404. Second bevel gear; 405. Bidirectional screw; 406. Ball bearing; 407. Open slot; 408. Limit slider; 409. Screw nut; 5. Pressing mechanism; 501. Pressing roller; 502. Cleaning scraper; 503. Mounting bracket; 504. Pressing cylinder; 6. Feed motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 3 A CNC bending machine with a plate straightening mechanism includes a bending machine body 1, a feed plate 3 is provided inside the bending machine body 1, and a centering clamping assembly 4 is provided above the feed plate 3, a feed roller 2 is provided on the rear side of the feed plate 3, and a pressing mechanism 5 is provided above the feed roller 2, one end of the feed roller 2 is fixedly connected to the power output end of the feed motor 6, and the feed motor 6 is fixedly installed on the bending machine body 1;

[0028] The centering clamping assembly 4 includes a centering plate 401 arranged above the feed plate 3, and the bottom of the centering plate 401 is fixedly connected to a limit slider 408, a screw nut 409 is provided inside the limit slider 408, and a bidirectional screw 405 is installed inside the screw nut 409, a second bevel gear 404 is fixedly installed on the surface of the bidirectional screw 405, and a first bevel gear 403 is provided on one side of the second bevel gear 404, and one end of the first bevel gear 403 is fixedly connected to the power output end of the servo motor 402;

[0029] An open groove 407 is provided on one side of the centering plate 401 close to the vertical center line of the bending machine body 1, and a number of equally distributed balls 406 are installed inside the open groove 407. The open groove 407 and the balls 406 form a semi-enclosed structure, and the surface of the balls 406 protrudes from the end face of the centering plate 401.

[0030] By adopting the above technical solution, after the servo motor 402 is started, it drives the first bevel gear 403 to rotate through the power output end, and the first bevel gear 403 drives the second bevel gear 404 to rotate. At this time, the bidirectional screw rod 405 on the second bevel gear 404 rotates. When the bidirectional screw rod 405 rotates, the limit slider 408 can be driven to slide under the action of the screw nut 409, so that the distance between the two sets of centering plates 401 is adjusted, and the two sides of the centering plate 401 and the sheet material are close to each other, so that the ball 406 on the centering plate 401 is close to the sheet material. When the sheet material moves, the ball 406 can roll to reduce the friction between the centering plate 401 and the sheet material, and the centering plate 401 can control the direction of travel of the sheet material.

[0031] Specifically, such as Figure 4 As shown, the pressing mechanism 5 includes a pressing cylinder 504 arranged inside the bending machine body 1, and the pressing cylinder 504 is fixedly installed on the pressing mechanism 5 by bolts, and the telescopic end of the pressing cylinder 504 is provided with a mounting bracket 503, and the interior of the mounting bracket 503 is provided with a pressing roller 501 through a bearing, and the top of the pressing roller 501 is provided with a cleaning scraper 502, the top of the cleaning scraper 502 is fixed on the mounting bracket 503, and the bottom of the cleaning scraper 502 is in contact with the top of the pressing roller 501, the pressing roller 501 and the feed roller shaft 2 are parallel to each other, and the axes of the feed roller shaft 2 and the pressing roller 501 are located in the same vertical plane, and a bending mold is provided on one side of the feed roller shaft 2.

[0032] By adopting the above technical solution, the height of the lower pressing roller 501 is adjusted according to the thickness of the sheet, and the lower pressing cylinder 504 is started. The lower pressing cylinder 504 pushes the mounting bracket 503 downward through the telescopic end. At this time, the mounting bracket 503 drives the lower pressing roller 501 to move downward, so that the lower pressing roller 501 is close to the feed roller shaft 2. The distance between the feed roller shaft 2 and the lower pressing roller 501 is adapted to the thickness of the sheet. After the feed motor 6 is started, the feed roller shaft 2 can be driven to rotate through the power output end. The sheet is located at the feed roller shaft 2. After passing between the feed roller 2 and the lower pressure roller 501, the rotating feed roller 2 will cause the sheet material to move toward the side of the rear bending mold. When the sheet material passes between the feed roller 2 and the lower pressure roller 501, it is squeezed and shaped by the feed roller 2 and the lower pressure roller 501. At the same time, the lower pressure roller 501 rotates under the action of friction, and the cleaning scraper 502 can scrape off the dust on the lower pressure roller 501. One side of the cleaning scraper 502 is covered with tape, and the dust adheres to the tape of the cleaning scraper 502. The tape on the cleaning scraper 502 can be replaced regularly.

[0033] Working principle: According to the width of the sheet, the distance between the two sets of centering plates 401 is adjusted, and the servo motor 402 is started. Under the action of the first bevel gear 403 and the second bevel gear 404, the two-way screw rod 405 is driven to rotate. The centering plates 401 and the two sides of the sheet are close to each other, so that the balls 406 on the centering plates 401 are close to the sheet, pushing the sheet backward until the sheet is located between the feed roller 2 and the lower pressure roller 501. At this time, the height of the lower pressure roller 501 is adjusted according to the thickness of the sheet, and the lower pressure roller 501 is started. Cylinder 504, the downward pressure cylinder 504 pushes the mounting bracket 503 to move downward, so that the lower pressure roller 501 is close to the feed roller shaft 2, and the distance between the feed roller shaft 2 and the lower pressure roller 501 is adapted to the thickness of the sheet. After the feed motor 6 is started, it drives the feed roller shaft 2 to rotate. When the sheet passes between the feed roller shaft 2 and the lower pressure roller 501, it is squeezed and shaped by the feed roller shaft 2 and the lower pressure roller 501. The sheet moves, and the ball 406 rolls synchronously to reduce the friction between the centering plate 401 and the sheet.

[0034] 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 CNC bending machine with a plate straightening mechanism, comprising a bending machine body (1), characterized in that: A feed plate (3) is provided inside the bending machine body (1), and a centering clamping assembly (4) is provided above the feed plate (3); a feed roller (2) is provided on the rear side of the feed plate (3), and a pressing mechanism (5) is provided above the feed roller (2); one end of the feed roller (2) is fixedly connected to the power output end of the feed motor (6), and the feed motor (6) is fixedly installed on the bending machine body (1); The centering clamping assembly (4) includes a centering plate (401) arranged above the feed plate (3), and the bottom of the centering plate (401) is fixedly connected to a limiting slider (408), a screw nut (409) is arranged inside the limiting slider (408), and a bidirectional screw (405) is installed inside the screw nut (409), a second bevel gear (404) is fixedly installed on the surface of the bidirectional screw (405), and a first bevel gear (403) is arranged on one side of the second bevel gear (404), one end of the first bevel gear (403) is fixedly connected to the power output end of the servo motor (402), an open groove (407) is opened on the side of the centering plate (401) close to the vertical center line of the bending machine body (1), and a plurality of equidistant and evenly distributed balls (406) are installed inside the open groove (407), and the open groove (407) and the balls (406) form a semi-enclosed structure.

2. A CNC bending machine with a plate straightening mechanism according to claim 1, characterized in that: The surface of the ball (406) protrudes from the end surface of the centering plate (401).

3. The CNC bending machine with a plate straightening mechanism according to claim 1, characterized in that: The pressing mechanism (5) comprises a pressing cylinder (504) arranged inside the bending machine body (1), and the pressing cylinder (504) is fixedly mounted on the pressing mechanism (5) by means of bolts, and a mounting bracket (503) is provided at the telescopic end of the pressing cylinder (504).

4. The CNC bending machine with a plate straightening mechanism according to claim 3, characterized in that: A lower pressing roller (501) is provided inside the mounting bracket (503) via a bearing, and a cleaning scraper (502) is provided on the top of the lower pressing roller (501).

5. The CNC bending machine with a plate straightening mechanism according to claim 4, characterized in that: The top of the cleaning scraper (502) is fixed on the mounting bracket (503), and the bottom of the cleaning scraper (502) is in contact with the top of the lower pressure roller (501).

6. The CNC bending machine with a plate straightening mechanism according to claim 5, characterized in that: The lower pressure roller (501) and the feed roller shaft (2) are parallel to each other, and the axes of the feed roller shaft (2) and the lower pressure roller (501) are located in the same vertical plane. A bending mold is provided on one side of the feed roller shaft (2).

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