Bending machine with safety protection function

Abstract

The utility model relates to the technical field of bending machines, in particular to a bending machine with a safety protection function, which comprises a bending mechanism and a connecting plate mounted on an output shaft of a hydraulic cylinder of the bending mechanism, and further comprises a bending knife bolted at the bottom of the connecting plate, a positioning plate is mounted on one side of an inner cavity of the bending mechanism, and a knife holder is bolted at the top of the positioning plate; through the cooperation of the alarm mechanism and the blocking shell, the bending knife which is not used can be blocked and protected, so that the contact between parts and the body and the bending knife is reduced, damage to the parts is reduced, the safety of workers during working is improved, and meanwhile through the cooperation of the air pipe, the upper telescopic pipe, the lower telescopic pipe and the blocking shell, the working efficiency is improved. The tool apron can be cleaned, so that chippings in the tool apron are reduced, the situation that the chippings influence the bending effect is reduced, and the problems that when an existing bending machine is used, safety is poor, and chippings are inconvenient to clean are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a bending machine with a safety protection function. Background Art

[0002] A bending machine is a machine that can bend thin plates. It is divided into manual bending machines, hydraulic bending machines and CNC bending machines. Its structure mainly includes a bracket, a workbench and a clamping plate. The workbench is placed on the bracket. The workbench consists of a base and a pressure plate. The base is connected to the clamping plate through a hinge. The base consists of a seat shell, a coil and a cover plate. The coil is placed in the depression of the seat shell, and the top of the depression is covered with a cover plate. Most existing bending machines are controlled by foot switches so that the staff can hold the workpiece for bending.

[0003] Most existing bending machines do not have the function of protecting the bending knives when bending. When one of the bending knives of some bending machines is needed to be used, the other bending knives will also move together, and the workers are likely to get parts or their bodies stuck under the unused bending knives, which not only causes damage to the parts, but also increases the danger of the workers at work, reducing the safety of the bending machine when in use;

[0004] At the same time, when the existing bending machine is in use, some debris will be generated during the bending process, and the debris is easily stuck inside the knife seat, so that when the staff bends the parts, the bending knife is affected by the debris and cannot reach the specified position, affecting the bending effect of the bending machine. Utility Model Content

[0005] The purpose of the utility model is to provide a bending machine with a safety protection function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A bending machine with a safety protection function, comprising a bending mechanism and a connecting plate installed on the output shaft of its hydraulic cylinder, and also comprising:

[0007] A bending knife bolted to the bottom of the connecting plate, a positioning plate installed on one side of the inner cavity of the bending mechanism, a knife seat bolted on the top of the positioning plate, a positioning groove opened on one side of the connecting plate, and a positioning block slidably connected to the inner cavity of the positioning groove;

[0008] A movable shell is fixed to one side of the positioning block, the inner cavity of the movable shell is provided with an alarm mechanism, the bottom of the alarm mechanism is installed with a blocking shell, the inner wall of the bending mechanism is provided with an air pipe, the surface of the air pipe is connected with an upper telescopic pipe, the other end of the upper telescopic pipe is connected with a lower telescopic pipe, and the surface of the connecting plate is provided with a positioning mechanism.

[0009] Preferably, the alarm mechanism comprises a pressure sensor installed on the top of the inner cavity of the movable shell and an extrusion plate slidably connected to the inner cavity of the movable shell, and connecting rods are fixedly connected to both sides of the bottom of the extrusion plate.

[0010] Preferably, the positioning mechanism includes a connecting shell fixed to one side of the connecting plate and a positioning rod sliding in the inner cavity thereof, and also includes a compression spring fixed to one end of the positioning rod and a limiting groove opened on the surface of the movable shell.

[0011] Preferably, the side of the positioning rod away from the compression spring is designed to be arc-shaped, the inner cavity of the limiting groove is designed to be arc-shaped, and the compression spring is used in conjunction with the limiting groove.

[0012] Preferably, the cross-sectional shapes of the positioning block and the positioning groove are both T-shaped structures, and the positioning groove is used in conjunction with the positioning block.

[0013] Preferably, a toggle plate is fixedly connected to one side of the movable shell, and the surface of the lower telescopic tube penetrates to the other side of the toggle plate and is fixedly connected to the inner wall of the penetration point.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can block and protect the unused bending knife through the cooperation of the alarm mechanism and the blocking shell, thereby reducing the contact between the parts and the body and the bending knife, which not only reduces the damage to the parts but also improves the safety of the staff at work. At the same time, the cooperation of the air pipe, the upper telescopic tube, the lower telescopic tube and the blocking shell can clean the knife seat, thereby reducing the debris inside it and the situation where the debris affects the bending effect, thereby solving the problem that the existing bending machine has poor safety when in use and is inconvenient to clean the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;

[0018] Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;

[0019] Figure 4 It is a schematic diagram of a partial three-dimensional structure from another viewing angle of the utility model.

[0020] In the figure: 1. bending mechanism; 2. connecting plate; 3. bending knife; 4. positioning plate; 5. knife holder; 6. positioning groove; 7. positioning block; 8. movable shell; 9. alarm mechanism; 91. pressure sensor; 92. extrusion plate; 93. connecting rod; 10. blocking shell; 11. air pipe; 12. upper telescopic tube; 13. lower telescopic tube; 14. toggle plate; 15. positioning mechanism; 151. connecting shell; 152. positioning rod; 153. compression spring; 154. limit groove. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figure 1-4As shown, a bending machine with a safety protection function includes a bending mechanism 1. The bending mechanism 1 is composed of a shell, a set of hydraulic cylinders and other parts to facilitate subsequent use. The output shaft of the hydraulic cylinder of the bending mechanism 1 is installed with a connecting plate 2, and a bending knife 3 is bolted to the bottom of the connecting plate 2. The number of bending knives 3 is several and the shapes are different. Under this function, the staff can bend different parts of the part through the bending machine, so that one bending machine can complete all the bending of a part. A positioning plate 4 is installed on one side of the inner cavity of the bending mechanism 1, and a knife seat 5 is bolted to the top of the positioning plate 4. The knife seat 5 is used in conjunction with the bending knife 3. Under this function, the knife seat 5 can receive the bending knife 3, so that the bending machine is in the inner liquid of the bending mechanism 1. The parts are bent under the cooperation of the pressure rod, the bending knife 3 and the knife seat 5. A positioning groove 6 is provided on one side of the connecting plate 2. The position of the positioning groove 6 corresponds to the position of the bending knife 3. The inner cavity of the positioning groove 6 is slidably connected with a positioning block 7. The cross-sectional shapes of the positioning block 7 and the positioning groove 6 are both T-shaped structural designs. The positioning groove 6 is used in conjunction with the positioning block 7. Under this action, the positioning block 7 can slide inside the positioning groove 6, but the positioning groove 6 will not be easily moved out from the inside of the positioning block 7, so as to avoid the positioning block 7 from moving out of the inside of the positioning groove 6 and affecting subsequent use. A movable shell 8 is fixedly connected to one side of the positioning block 7. The inner cavity of the movable shell 8 is provided with an alarm mechanism 9. A blocking shell 10 is installed at the bottom of the alarm mechanism 9. Under the cooperation of the blocking shell 10 and the alarm mechanism 9, The bending knife 3 can be blocked, so that the staff can avoid accidentally touching the other bending knives 3 when using one of the bending knives 3 and causing safety problems, which effectively improves the safety of the bending machine when in use. Under the action of the alarm mechanism 9, the blocking shell 10 can automatically alarm after being squeezed, so that the hydraulic cylinder inside the bending mechanism 1 stops working, further improving the safety of the bending machine when in use. The inner wall of the bending mechanism 1 is provided with an air pipe 11, and the other end of the air pipe 11 is connected to an air pump. Under this action, the air pump can discharge air into the interior of the air pipe 11. The surface of the air pipe 11 is connected to an upper telescopic tube 12, and the other end of the upper telescopic tube 12 is connected to a lower telescopic tube 13. The other end of the lower telescopic tube 13 is connected to the blocking shell 10 are interconnected, under which the air inside the air pipe 11 can be discharged from the opening of the blocking shell 10 through the cooperation of the upper telescopic tube 12 and the lower telescopic tube 13, so as to clean the inner cavity of the knife seat 5 and avoid the accumulation of more debris in the inner cavity of the knife seat 5 to affect the subsequent bending effect. The surface of the connecting plate 2 is provided with a positioning mechanism 15, and the number of the positioning mechanisms 15 is several, and they are used in groups of two. Under this action, when the staff needs to use a bending knife 3, they can move the movable shell 8 to drive the positioning block 7 to slide inside the positioning groove 6, so as to change the position of the blocking shell 10, so that it no longer blocks the bending knife 3, which is convenient for the staff to use, and under the action of the positioning mechanism 15, the movable shell 8 can be limited.When the staff uses the bending knife 3, the movable shell 8 will not be easily moved to affect the bending, and under the cooperation of the upper telescopic tube 12, the normal movement of the movable shell 8 will not be affected under the action of ventilation. A toggle plate 14 is fixedly connected to one side of the movable shell 8, and the surface of the lower telescopic tube 13 penetrates to the other side of the toggle plate 14 and is fixedly connected to the inner wall of the penetration point. Under this action, the lower telescopic tube 13 can be limited so that it will not be easily moved during use, and under the action of the toggle plate 14, it can also provide an effective force point for the staff to move the movable shell 8, so that the staff can move the movable shell 8 more conveniently and labor-saving.

[0023] The alarm mechanism 9 includes a pressure sensor 91 installed on the top of the inner cavity of the movable shell 8. The pressure sensor 91 is electrically connected to the hydraulic cylinder inside the bending mechanism 1. Under this action, the hydraulic cylinder inside the bending mechanism 1 can be controlled when the pressure sensor 91 is squeezed, so that the hydraulic cylinder can stop, thereby improving the safety of the bending machine when in use. The inner cavity of the movable shell 8 is slidably connected with an extrusion plate 92, and the extrusion plate 92 is used in conjunction with the pressure sensor 91. Both sides of the bottom of the extrusion plate 92 are fixedly connected with connecting rods 93. The other end of the connecting rod 93 passes through the bottom of the movable shell 8 and is slidably connected to the inner wall of the penetration point. The bottom of the connecting rod 93 is fixedly connected to the top of the blocking shell 10. Under this action, the blocking shell 10 can push the extrusion plate 92 to move through the connecting rod 93 when it is squeezed, so that the extrusion plate 92 can squeeze the pressure sensor 91 to stop the hydraulic cylinder from working, effectively improving the safety of the bending machine when in use.

[0024] The positioning mechanism 15 includes a connecting shell 151, one side of which is fixedly connected to the surface of the connecting plate 2, a positioning rod 152 is slidably connected to the inner cavity of the connecting shell 151, the other end of the positioning rod 152 penetrates the outer side of the connecting shell 151 and is slidably connected to the inner wall of the penetration point, one end of the positioning rod 152 is fixedly connected to a compression spring 153, one side of the compression spring 153 is fixedly connected to the inner wall of the connecting shell 151, and a limiting groove 154 is provided on the surface of the movable shell 8, under which the movable shell 8 can be moved to the bending position. When the folding knife 3 is above the inner cavity, the positioning rod 152 can be embedded in the limiting groove 154 with the cooperation of the compression spring 153, so as to limit the movable shell 8 and prevent it from moving easily. The side of the positioning rod 152 away from the compression spring 153 is designed in an arc shape, and the inner cavity of the limiting groove 154 is designed in an arc shape. The compression spring 153 is used in conjunction with the limiting groove 154. Under this effect, the positioning rod 152 can automatically move when the force is too large under the action of the shape, thereby facilitating the limiting of the position of the movable shell 8.

[0025] It is worth noting that the technical features such as the bending mechanism 1 and the pressure sensor 91 proposed in this technical solution should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected according to conventional practices in the field, and this technical solution will not be further elaborated.

[0026] Working principle: first select the bending knife 3 to be used, then push the corresponding toggle plate 14 to drive the movable shell 8 and the parts on its surface to move upward, and with the cooperation of the compression spring 153 and the positioning rod 152, the movable shell 8 can be limited so that it will not move easily, and then the bending work is carried out. During the bending process, other blocking shells 10 and alarm mechanisms 9 can block the unused bending knife 3, and in the process of the bending knife 3 descending, if there is a foreign object under the unused bending knife 3, the foreign object will squeeze the blocking shell 10 so that it drives the squeezing plate 92 to stop moving through the connecting rod 93, thereby squeezing the pressure sensor 91. Under the action of the pressure sensor 91, it will promptly feedback to the hydraulic cylinder inside the bending mechanism 1 to stop it from working, so that the unused bending knife 3 moves to damage parts or accidentally injure staff members. After bending, the bending knife 3 returns to its original position, and then under the action of the air pipe 11, the air in the air pump can be discharged through the blocking shell 10, so that the inside of the knife holder 5 can be cleaned.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bending machine with a safety protection function, comprising a bending mechanism (1) and a connecting plate (2) mounted on the output shaft of its hydraulic cylinder, characterized in that: Also includes: A bending knife (3) is bolted to the bottom of the connecting plate (2); a positioning plate (4) is installed on one side of the inner cavity of the bending mechanism (1); a knife seat (5) is bolted to the top of the positioning plate (4); a positioning groove (6) is opened on one side of the connecting plate (2); and a positioning block (7) is slidably connected to the inner cavity of the positioning groove (6); A movable shell (8) is fixed to one side of the positioning block (7), the inner cavity of the movable shell (8) is provided with an alarm mechanism (9), the bottom of the alarm mechanism (9) is installed with a blocking shell (10), the inner wall of the bending mechanism (1) is provided with an air pipe (11), the surface of the air pipe (11) is connected to an upper telescopic tube (12), the other end of the upper telescopic tube (12) is connected to a lower telescopic tube (13), and the surface of the connecting plate (2) is provided with a positioning mechanism (15).

2. A bending machine with safety protection function according to claim 1, characterized in that: The alarm mechanism (9) comprises a pressure sensor (91) mounted on the top of the inner cavity of the movable shell (8) and an extrusion plate (92) slidably connected to the inner cavity of the movable shell (8), and connecting rods (93) are fixedly connected to both sides of the bottom of the extrusion plate (92).

3. The bending machine with safety protection function according to claim 1 is characterized in that: The positioning mechanism (15) comprises a connection shell (151) fixed to one side of the connection plate (2) and a positioning rod (152) sliding in the inner cavity thereof, and further comprises a compression spring (153) fixed to one end of the positioning rod (152) and a limiting groove (154) formed on the surface of the movable shell (8).

4. A bending machine with safety protection function according to claim 3, characterized in that: The side of the positioning rod (152) away from the compression spring (153) is designed to be arc-shaped, the inner cavity of the limiting groove (154) is designed to be arc-shaped, and the compression spring (153) and the limiting groove (154) are used in conjunction with each other.

5. The bending machine with safety protection function according to claim 1 is characterized in that: The cross-sectional shapes of the positioning block (7) and the positioning groove (6) are both T-shaped structures, and the positioning groove (6) is used in conjunction with the positioning block (7).

6. The bending machine with safety protection function according to claim 1 is characterized in that: A toggle plate (14) is fixedly connected to one side of the movable shell (8), and a surface of the lower telescopic tube (13) penetrates to the other side of the toggle plate (14) and is fixedly connected to the inner wall of the penetration point.

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