Segmented bending mechanism of bending machine

Abstract

The utility model belongs to the technical field of bending mechanisms, and particularly relates to a bending machine segmented bending mechanism which comprises a workbench, an arch frame is fixedly mounted at the top of the workbench, a horizontally-arranged guide transverse plate is fixedly mounted in the arch frame, a lifting cylinder penetrates through the guide transverse plate, a positioning plate is arranged at the bottom of the lifting cylinder, and a clamping groove is formed in the positioning plate. A limiting lantern ring is rotationally mounted on the surface of the lifting cylinder, and a mounting frame is fixedly connected to the side face of the limiting lantern ring. According to the bending device, during bending, the servo motor works to drive the bidirectional lead screw to rotate, then the two sliding seats move oppositely, under pushing of the connecting rod, the lifting cylinder moves downwards, then the positioning plate makes contact with a workpiece firstly and fixes the workpiece, the compression spring is compressed, the guide seat gradually slides into the displacement groove, then the bending knife is pressed downwards, and then the workpiece is bent. And during working, the workpiece is automatically positioned, and the bending accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to a bending mechanism, in particular to a segmented bending mechanism of a bending machine. Background Art

[0002] The bending machine is a common sheet metal equipment that can perform bending processing. The CNC bending machine is an upgraded version of the bending machine. It has high automation and high work efficiency. It is often used in automobile manufacturing, aircraft manufacturing, shipbuilding and other industries. It can be found in both light and heavy industries. Therefore, in production and manufacturing, the CNC bending machine is of great importance.

[0003] For example, the patent with authorization announcement number CN218395412U discloses a bending mechanism that can be bent in sections, including a base, a support plate, a fixed frame, a first hydraulic rod mechanism, a second hydraulic rod mechanism, a pressure plate, a bottom film seat structure that can be tightly plugged and connected, and a push seat structure that can be slidably adjusted. The fixed seat, the shielding plate, the push spring, the clamping plate, the bottom film, the die groove, the base and the support plate of the utility model cooperate with each other, which is conducive to pushing and clamping the two ends of the bottom film through the clamping plate during use, and preventing the bottom film from moving during the bending process and affecting the bending work efficiency; the inverted T-shaped push seat, the sliding frame, the tightening bolt and the bending knife are set, which is conducive to loosening the tightening bolt to move according to the bending requirements and the position of the die groove during the bending process, and pushing the sliding frame to drive the bending knife to move; it is convenient to adjust according to work needs during the bending process. Although the above patent has many advantages, it still has defects: during the bending operation, multiple steps are required to fix the workpiece, and the operation is relatively cumbersome; although multiple-position bending can be achieved at a time, the bending position cannot be changed, which reduces its applicability. Utility Model Content

[0004] The main purpose of the present disclosure is to provide a segmented bending mechanism for a bending machine to effectively solve the problems raised by the inventor in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A segmented bending mechanism of a bending machine comprises a workbench, an arch frame is fixedly installed on the top of the workbench, a horizontally arranged guide cross plate is fixedly installed in the arch frame, a lifting cylinder passes through the guide cross plate, a positioning plate is provided at the bottom of the lifting cylinder, a limiting ring is rotatably installed on the surface of the lifting cylinder, and a mounting frame is fixedly connected to the side of the limiting ring, a bending knife is fixedly installed on the bottom of the mounting frame, and the position of the bending knife is higher than the positioning plate, and a power mechanism for driving the lifting cylinder to rise and fall is provided on the arch frame.

[0007] Preferably, the power mechanism includes a bidirectional screw, a limit rod, a slide, a connecting rod and a servo motor. The bidirectional screw is rotatably installed in the arch frame, the servo motor is fixedly installed on the side of the arch frame, and the output end of the servo motor is fixedly connected to one end of the bidirectional screw. The limit rod is fixedly connected in the arch frame and arranged parallel to the bidirectional screw. Two symmetrically arranged slides are threadedly installed on the bidirectional screw, and the moving directions of the two slides are opposite. The two slides are both slidably connected to the limit rod, and the bottom ends of the two slides are rotatably installed with connecting rods, and the other end of the connecting rod is rotatably connected to the top of the lifting cylinder, and a through hole is opened in the middle of the guide cross plate, and the lifting cylinder passes through the through hole.

[0008] Preferably, a bottom film is detachably mounted on the top of the workbench via locking bolts, and a bending film opening is provided at the bottom of the bottom film.

[0009] Preferably, both side walls of the arch frame are provided with alignment slide rails, and one end of the mounting frame away from the limiting ring is provided with a contraction groove, a T-shaped pull rod is slidably connected in the contraction groove, and the other end of the T-shaped pull rod extends into the alignment slide rail and slides therein.

[0010] Preferably, a displacement groove is provided at the bottom of the lifting cylinder, and a compression spring is fixedly connected to the bottom of the displacement groove, and a guide seat is fixedly connected to the top of the positioning plate, and the top of the guide seat slides into the displacement groove and is fixedly connected to the compression spring.

[0011] Preferably, the size of the positioning plate is larger than the size of the lifting cylinder.

[0012] In view of this, compared with the prior art, the beneficial effects of the utility model are:

[0013] (I) In the present application, the servo motor works during bending, driving the bidirectional lead screw to rotate, and then the two slides move toward each other. Under the push of the connecting rod, the lifting cylinder moves downward, and then the positioning plate first contacts the workpiece and fixes it. The compression spring is compressed, and the guide seat gradually slides into the displacement groove. Then the bending knife is pressed down again, so that the workpiece can be bent. The workpiece is positioned automatically during work to ensure the accuracy of bending.

[0014] (ii) In the present application, the bending operation can be performed at different positions. First, the T-shaped pull rod is moved toward the shrinkage groove until it is separated from the alignment slide rail. At this time, the mounting frame is released from the limit, and then the limit sleeve is rotated until the mounting frame is aligned with another alignment slide rail. The T-shaped pull rod is moved outward and inserted into the alignment slide rail so that the mounting frame is limited again, that is, the bending knife moves to the top of the bending film opening on the right side, thereby achieving the purpose of transposition bending, which is flexible and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The figure shows a schematic diagram of the structure of the segmented bending mechanism of the bending machine provided by the utility model;

[0016] Figure 2 Shown is a cross-sectional view of the lifting cylinder;

[0017] Figure 3 Shown is a cross-sectional view of the connection between the T-shaped draw rod and the mounting frame.

[0018] icon:

[0019] 1-working table; 2-arch frame; 3-guide cross plate; 4-lifting cylinder; 401-displacement slot; 402-compression spring; 5-positioning plate; 501-guide seat; 6-limiting collar; 7-mounting frame; 701-shrinkage slot; 8-bending knife; 9-alignment slide rail; 10-T-shaped pull rod; 11-locking bolt; 12-bottom membrane; 13-bidirectional screw rod; 14-limiting rod; 15-slide seat; 16-connecting rod; 17-servo motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides the following embodiments:

[0022] A sectional bending mechanism of a bending machine comprises a workbench 1, an arch frame 2 is fixedly installed on the top of the workbench 1, a horizontally arranged guide cross plate 3 is fixedly installed inside the arch frame 2, a lifting cylinder 4 passes through the guide cross plate 3, a positioning plate 5 is provided at the bottom of the lifting cylinder 4, a limiting collar 6 is rotatably installed on the surface of the lifting cylinder 4, and a mounting frame 7 is fixedly connected to the side of the limiting collar 6, a bending knife 8 is fixedly installed at the bottom of the mounting frame 7, and the position of the bending knife 8 is higher than the positioning plate 5, and a power mechanism for driving the lifting cylinder 4 to rise and fall is provided on the arch frame 2.

[0023] Specifically, a displacement groove 401 is provided at the bottom of the lifting cylinder 4, and a compression spring 402 is fixedly connected to the bottom of the displacement groove 401, and a guide seat 501 is fixedly connected to the top of the positioning plate 5. The top of the guide seat 501 slides into the displacement groove 401 and is fixedly connected to the compression spring 402. The size of the positioning plate 5 is larger than that of the lifting cylinder 4.

[0024] Specifically, the power mechanism includes a bidirectional screw 13, a limit rod 14, a slide 15, a connecting rod 16 and a servo motor 17. The bidirectional screw 13 is rotatably installed in the arch frame 2, the servo motor 17 is fixedly installed on the side of the arch frame 2, and the output end of the servo motor 17 is fixedly connected to one end of the bidirectional screw 13. The limit rod 14 is fixedly connected in the arch frame 2 and is arranged parallel to the bidirectional screw 13. Two symmetrically arranged slides 15 are threadedly installed on the bidirectional screw 13, and the moving directions of the two slides 15 are opposite. The two slides 15 are both slidably connected to the limit rod 14, and the bottom ends of the two slides 15 are rotatably installed with a connecting rod 16, and the other end of the connecting rod 16 is rotatably connected to the top of the lifting cylinder 4, and a through hole is opened in the middle of the guide cross plate 3, and the lifting cylinder 4 passes through the through hole.

[0025] Specifically, a bottom film 12 is detachably mounted on the top of the workbench 1 via a locking bolt 11 , and a bending film opening is provided at the bottom of the bottom film 12 .

[0026] Specifically, both side walls of the arch frame 2 are provided with alignment slide rails 9, and one end of the mounting frame 7 away from the limiting ring 6 is provided with a contraction groove 701, in which a T-shaped pull rod 10 is slidably connected, and the other end of the T-shaped pull rod 10 extends into the alignment slide rail 9 and slides therein.

[0027] The specific implementation of this embodiment is as follows: the workpiece to be processed is placed on the top of the bottom film 12, and the position of the workpiece to be bent is adjusted so that it is aligned with the bending film opening. When bending, the servo motor 17 works to drive the bidirectional screw rod 13 to rotate, and then the two slide seats 15 move toward each other. Under the push of the connecting rod 16, the lifting cylinder 4 moves downward, and then the positioning plate 5 first contacts the workpiece and fixes it. The compression spring 402 is compressed, and the guide seat 501 gradually slides into the displacement groove 401. Then the bending knife 8 is pressed down again, so that the workpiece can be bent. The workpiece is positioned automatically during work to ensure the accuracy of bending.

[0028] The bending operation can be performed at different positions. First, move the T-shaped pull rod 10 toward the shrinkage groove 701 until it is out of the alignment slide rail 9. At this time, the mounting frame 7 is released from the limit, and then the limiting collar 6 is rotated until the mounting frame 7 is aligned with another alignment slide rail 9, and the T-shaped pull rod 10 is moved outward to insert the T-shaped pull rod 10 into this alignment slide rail 9 to prevent deviation, so that the mounting frame 7 is limited again, that is, the bending knife 8 is moved to the top of the bending film mouth on the right side, thereby achieving the purpose of transposition bending, which is flexible and reliable to use.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sectional bending mechanism of a bending machine, characterized in that: The invention comprises a workbench (1), wherein an arch frame (2) is fixedly mounted on the top of the workbench (1), a horizontally arranged guide cross plate (3) is fixedly mounted inside the arch frame (2), a lifting cylinder (4) passes through the guide cross plate (3), a positioning plate (5) is arranged at the bottom of the lifting cylinder (4), a limiting collar (6) is rotatably mounted on the surface of the lifting cylinder (4), and a mounting frame (7) is fixedly connected to the side of the limiting collar (6), a bending knife (8) is fixedly mounted on the bottom of the mounting frame (7), and the position of the bending knife (8) is higher than the positioning plate (5), and a power mechanism for driving the lifting cylinder (4) to rise and fall is arranged on the arch frame (2).

2. A sectional bending mechanism for a bending machine according to claim 1, characterized in that: The power mechanism comprises a bidirectional screw rod (13), a limit rod (14), a slide seat (15), a connecting rod (16) and a servo motor (17); the bidirectional screw rod (13) is rotatably mounted in the arch frame (2); the servo motor (17) is fixedly mounted on the side of the arch frame (2); and the output end of the servo motor (17) is fixedly connected to one end of the bidirectional screw rod (13); the limit rod (14) is fixedly connected in the arch frame (2) and parallel to the bidirectional screw rod (13). The bidirectional screw rod (13) is threadedly mounted with two symmetrically arranged slide seats (15), and the moving directions of the two slide seats (15) are opposite. The two slide seats (15) are slidably connected to the limit rod (14), and the bottom ends of the two slide seats (15) are rotatably mounted with connecting rods (16), and the other ends of the connecting rods (16) are rotatably connected to the top end of the lifting cylinder (4). A through hole is opened in the middle of the guide cross plate (3), and the lifting cylinder (4) passes through the through hole.

3. The sectional bending mechanism of a bending machine according to claim 1, characterized in that: A bottom film (12) is detachably mounted on the top of the workbench (1) via a locking bolt (11), and a bending film opening is provided at the bottom of the bottom film (12).

4. The sectional bending mechanism of a bending machine according to claim 3, characterized in that: Both side walls of the arch frame (2) are provided with alignment slide rails (9), and one end of the mounting frame (7) away from the limiting ring (6) is provided with a contraction groove (701), a T-shaped draw rod (10) is slidably connected in the contraction groove (701), and the other end of the T-shaped draw rod (10) extends into the alignment slide rail (9) and slides therein.

5. The sectional bending mechanism of a bending machine according to claim 1, characterized in that: The bottom of the lifting cylinder (4) is provided with a displacement groove (401), and the bottom of the displacement groove (401) is fixedly connected to a compression spring (402), and the top of the positioning plate (5) is fixedly connected to a guide seat, and the top end of the guide seat slides into the displacement groove (401) and is fixedly connected to the compression spring (402).

6. The sectional bending mechanism of a bending machine according to claim 5, characterized in that: The size of the positioning plate (5) is larger than the size of the lifting cylinder (4).

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