Automatic cutting device for steel frame in sofa bed

Abstract

The invention relates to the technical field of automatic cutting of steel frames, and discloses an automatic cutting device for a steel frame in a sofa bed, the automatic cutting device comprises a supporting mechanism, and further comprises a cutting mechanism, a moving mechanism, a pressurizing mechanism and a buffering mechanism, the side face of the supporting mechanism is fixedly connected with the side face of the moving mechanism; the bottom end of the moving mechanism is fixedly connected with the top end of the cutting mechanism, the bottom end of the moving mechanism is connected with the top end of the pressurizing mechanism, and the side face of the pressurizing mechanism is fixedly connected with the bottom end of the buffering mechanism. A guide groove in the side face of a control plate presses down a movable frame, clamping rods are driven to evenly clamp a steel frame, it is guaranteed that steel is stable in the cutting process, and steel deformation or dislocation caused by uneven pressure is avoided; starting and stopping of the pressurizing air cylinder are controlled through the monitoring ring, force unloading in the later period of cutting is controlled, and loads of a cutter and equipment can be kept in a reasonable and balanced state in each stage of cutting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic cutting of steel frames, more particularly to an automatic cutting device for steel frames in sofa beds. BACKGROUND

[0002] The steel frame is an important component of a sofa bed, which is responsible for bearing and distributing the weight of the bed, ensuring comfort and safety during use. The steel frame is usually made of high-strength steel material and has high load-bearing capacity, which can support the weight of the mattress and the sleeper, ensuring that it does not deform over a long period of use. Most sofa bed steel frames are designed with folding function, which makes it easy to convert the sofa into a bed without exerting much force. Therefore, the control of size and shape needs to be more accurate during the cutting process of the steel frame. If there are burrs or deformation after cutting with any device, the following problems may occur: Firstly, the steel material is subjected to uneven pressure during cutting, which causes the steel frame to deform. If the material is thin, it may also have a curled edge. The deformed steel frame not only affects the cutting accuracy, but also causes structural instability during subsequent use, affecting the overall quality and safety of the product. Secondly, during the cutting process, factors such as thermal expansion and cooling of the material may cause uneven stress distribution. If the clamping force remains constant, it cannot effectively adjust the local stress distribution, which may cause cracks, burrs or other defects in the product, affecting the quality of the cut steel.

[0003] Therefore, there is an urgent need for an automatic cutting device for steel frames in sofa beds. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides an automatic cutting device for steel frames in sofa beds to solve the problems existing in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an automatic cutting device for steel frames in sofa beds, comprising a support mechanism, a cutting mechanism, a moving mechanism, a pressing mechanism and a buffer mechanism, the side surface of the support mechanism is fixedly connected with the side surface of the moving mechanism, the bottom end of the moving mechanism is fixedly connected with the top end of the cutting mechanism, the bottom end of the moving mechanism is connected with the top end of the pressing mechanism, and the side surface of the pressing mechanism is fixedly connected with the bottom end of the buffer mechanism. The moving mechanism comprises a rotating disc and a balance plate, the inner side of the rotating disc is fixedly connected with a guide rail, the side surface of the guide rail is connected with the side surface of the moving roller, the outer side of the rotating disc is provided with a pressing groove, and the inner side of the pressing groove is connected with the side surface of the pressing mechanism. The pressing mechanism comprises a control plate and a pressing rod, the inner side of the control plate is connected with an inner fixing table, the top end of the inner fixing table is connected with the bottom end of the pressing rod, the side surface of the control plate is provided with an arc-shaped guide groove, and the inner side of the arc-shaped guide groove is connected with the side surface of the supporting mechanism.

[0006] Further, the supporting mechanism comprises an L-shaped bearing plate and a steel frame to be cut, the side surface of the L-shaped bearing plate is fixedly connected with a supporting plate, the side surface of the L-shaped bearing plate is provided with a rotating groove, the top end of the L-shaped bearing plate is fixedly connected with a fixing frame, the side surface of the fixing frame is connected with a supporting roller, the side surface of the supporting roller is connected with the side surface of the steel frame to be cut, the side surface of the L-shaped bearing plate is fixedly connected with a guide rod, and the side surface of the guide rod is connected with the side surface of the arc-shaped guide groove.

[0007] Further, the cutting mechanism comprises a moving supporting rod and a knife guard cover, the bottom end of the moving supporting rod is fixedly connected with a placing table, the side surface of the placing table is fixedly connected with a rotating motor, the side surface of the rotating motor is connected with the side surface of the knife guard cover, the top end of the rotating motor is fixedly connected with a cutting tool, and the top end of the moving supporting rod is fixedly connected with the bottom end of the moving mechanism.

[0008] Further, the side surface of the rotating disc is fixedly connected with a rotating rod, the side surface of the rotating rod is connected with the side surface of the rotating groove, the side surface of the rotating rod is fixedly connected with a driving motor, the side surface of the driving motor is fixedly connected with the side surface of the L-shaped bearing plate, the inner side of the moving roller is connected with a T-shaped connecting rod, and the top end of the T-shaped connecting rod is fixedly connected with the side surface of the balance plate.

[0009] Further, the side surface of the moving roller is provided with a guide ring groove, the inner side of the guide ring groove is connected with the side surface of the guide rail, the top end of the balance plate is fixedly connected with a moving rod, the side surface of the moving rod is connected with the inner side of the supporting plate, the top end of the balance plate is fixedly connected with an elastic spring, the top end of the elastic spring is fixedly connected with the bottom end of the supporting plate, and the bottom end of the balance plate is fixedly connected with the top end of the moving supporting rod.

[0010] Further, the side surface of the control plate is provided with a vertical guide groove, the inner side of the vertical guide groove is connected with the side surface of the guide rod, the side surface of the inner fixing table is provided with a placing groove, the inner side of the placing groove is connected with a ball, the side surface of the ball is connected with the inner side of the control plate, the bottom end of the inner fixing table is provided with a rotating groove, and the inner side of the rotating groove is connected with a T-shaped rotating rod.

[0011] Further, the bottom end of the T-shaped rotating rod is fixedly connected with a connecting table, the side surface of the connecting table is fixedly connected with a moving frame, the bottom end of the connecting table is fixedly connected with a pressurizing spring, the bottom end of the pressurizing spring is fixedly connected with a fixed plate, the side surface of the fixed plate is fixedly connected with the side surface of the L-shaped bearing plate, the top end of the fixed plate is fixedly connected with a limiting tube, the bottom end of the connecting table is fixedly connected with a T-shaped rod, the bottom end of the T-shaped rod is connected with the inner side of the limiting tube, the inner side of the limiting tube is fixedly connected with a monitoring ring, and the side surface of the moving frame is fixedly connected with the bottom end of the buffer mechanism.

[0012] Further, the buffer mechanism comprises a pressurizing cylinder and a clamping rod, the bottom end of the pressurizing cylinder is fixedly connected with the side surface of the moving frame, the bottom end of the pressurizing cylinder is fixedly connected with a down-pressing rod, the bottom end of the down-pressing rod is fixedly connected with a connecting plate, the side surface of the connecting plate is fixedly connected with a down-pressing plate, the side surface of the down-pressing plate is connected with a linkage plate, the side surface of the linkage plate is connected with the side surface of the clamping rod, the side surface of the clamping rod is connected with a support frame, the top end of the support frame is fixedly connected with the bottom end of the moving frame, the inner side of the support frame is connected with a work-shaped connecting rod, the bottom end of the clamping rod is fixedly connected with a clamping arc plate, and the side surface of the clamping arc plate is connected with the side surface of the steel frame to be cut.

[0013] Technical effects and advantages of the present application: The present application is provided with a pressurizing mechanism, the down-pressing of the moving frame is controlled through the guide groove on the side surface of the control plate, the clamping rod is driven to clamp the steel frame uniformly, which is beneficial to ensure the stability of the steel material during cutting, avoids the deformation or misplacement of the steel material caused by uneven pressure, and thus ensures the straightness of the cutting line and the flatness of the cut; the uniform clamping force can effectively prevent the steel material from slipping or irregularly deforming during cutting, especially in the cutting process with high precision requirements, which can greatly improve the consistency and appearance quality of the product.

[0014] The present application is provided with a buffer mechanism, the start and stop of the pressurizing cylinder are controlled through the monitoring ring, the unloading in the later stage of cutting is controlled, which is beneficial to keep the load of the cutter and the equipment reasonable and balanced in each stage of cutting, the cutter wears more uniformly, and the equipment will not cause local excessive load due to uneven pressure, thereby prolonging the service life of the equipment and the cutter; it is helpful to keep the cutting stability, avoids the vibration or fluctuation in the cutting process, and further ensures the cutting stability.

[0015] The application is provided with a moving mechanism, the synchronous movement of the moving roller and the pressing rod is driven by the rotation of the rotating disc, the pressure of the pressing plate and the cutter is uniformly distributed all the time, the excessive wear of some parts of the cutter caused by uneven pressure is avoided, and the service life of the cutter is prolonged; the synchronous movement of the cutter and the pressing plate makes the adjustment in the cutting process more accurate and efficient, the time required for frequent adjustment is reduced, and the overall production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the support mechanism structure of the application; Figure 3 It is a schematic diagram of the cutting mechanism structure of the application; Figure 4 It is a schematic diagram of the moving mechanism structure of the application; Figure 5 It is a schematic diagram of the pressing mechanism structure of the application; Figure 6 It is a schematic diagram of the local structure of the pressing mechanism of the application; Figure 7 It is a schematic diagram of the structure of the moving frame of the application; Figure 8 It is a schematic diagram of the buffer mechanism structure of the application; Figure 9 It is a running circuit diagram of the pressing cylinder of the application.

[0017] The reference signs are: 1, support mechanism; 101, L-shaped bearing plate; 102, support plate; 103, rotating groove; 104, fixed frame; 105, support roller; 106, steel frame to be cut; 107, guide rod; 2, cutting mechanism; 201, moving support rod; 202, rotating motor; 203, setting table; 204, cutter guard; 205, cutting tool; 3, moving mechanism; 31, rotating disc; 311, rotating rod; 312, driving motor; 313, pressing groove; 314, guide rail; 32, balance plate; 321, moving rod; 322, elastic spring; 323, T-shaped connecting rod; 324, moving roller; 325, guide ring groove; 4, pressing mechanism; 41, control board; 411, arc-shaped guide groove; 412, vertical guide groove; 42, pressing rod; 421, inner fixing table; 422, installation groove; 423, ball; 424, rotating groove; 43, moving frame; 431, T-shaped rotating rod; 432, connecting table; 433, pressing spring; 434, T-shaped rod; 435, limiting tube; 436, monitoring ring; 437, fixing plate; 5, buffer mechanism; 51, pressing cylinder; 511, lower pressing rod; 512, connecting plate; 513, lower pressing plate; 52, clamping rod; 521, support frame; 522, I-shaped connecting rod; 523, linkage plate; 524, clamping arc plate. DETAILED DESCRIPTION

[0018] The technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples, and the automatic cutting device for steel frame in sofa bed to which the present application relates is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] REFERENCE Figures 1 to 3 The present application provides an automatic cutting device for steel frame in sofa bed, comprising a supporting mechanism 1, further comprising a cutting mechanism 2, a moving mechanism 3, a pressing mechanism 4 and a buffer mechanism 5, the side surface of the supporting mechanism 1 is fixedly connected with the side surface of the moving mechanism 3, the bottom end of the moving mechanism 3 is fixedly connected with the top end of the cutting mechanism 2, the bottom end of the moving mechanism 3 is connected with the top end of the pressing mechanism 4, and the side surface of the pressing mechanism 4 is fixedly connected with the bottom end of the buffer mechanism 5. The moving mechanism 3 comprises a rotating disc 31 and a balancing plate 32, the inner side of the rotating disc 31 is fixedly connected with a guide rail 314, the side surface of the guide rail 314 is connected with the side surface of a moving roller 324, the outer side of the rotating disc 31 is provided with a pressing groove 313, and the inner side of the pressing groove 313 is connected with the side surface of the pressing mechanism 4. The pressing mechanism 4 comprises a control board 41 and a pressing rod 42, the inner side of the control board 41 is connected with an inner fixing table 421, the top end of the inner fixing table 421 is connected with the bottom end of the pressing rod 42, the side surface of the control board 41 is provided with an arc-shaped guide groove 411, and the inner side of the arc-shaped guide groove 411 is connected with the side surface of the supporting mechanism 1.

[0020] The support mechanism 1 comprises an L-shaped bearing plate 101 and a steel frame to be cut 106, the side surface of the L-shaped bearing plate 101 is fixedly connected with a support plate 102, the side surface of the L-shaped bearing plate 101 is provided with a rotating groove 103, the top end of the L-shaped bearing plate 101 is fixedly connected with a fixed frame 104, the side surface of the fixed frame 104 is connected with a support roller 105, the side surface of the support roller 105 is connected with the side surface of the steel frame to be cut 106, the side surface of the L-shaped bearing plate 101 is fixedly connected with a guide rod 107, and the side surface of the guide rod 107 is connected with the side surface of the arc-shaped guide groove 411.

[0021] The cutting mechanism 2 comprises a moving support rod 201 and a cutter guard 204, the bottom end of the moving support rod 201 is fixedly connected with a placing table 203, the side surface of the placing table 203 is fixedly connected with a rotating motor 202, the side surface of the rotating motor 202 is connected with the side surface of the cutter guard 204, the top end of the rotating motor 202 is fixedly connected with a cutting tool 205, and the top end of the moving support rod 201 is fixedly connected with the bottom end of the moving mechanism 3.

[0022] Referring to Figure 4 The side surface of the rotating disc 31 is fixedly connected with a rotating rod 311, the side surface of the rotating rod 311 is connected with the side surface of the rotating groove 103, the side surface of the rotating rod 311 is fixedly connected with a driving motor 312, the side surface of the driving motor 312 is fixedly connected with the side surface of the L-shaped bearing plate 101, the inner side of the moving roller 324 is connected with a T-shaped connecting rod 323, and the top end of the T-shaped connecting rod 323 is fixedly connected with the side surface of the balance plate 32.

[0023] The side surface of the moving roller 324 is provided with a guide ring groove 325, the inner side of the guide ring groove 325 is connected with the side surface of the guide rail 314, the top end of the balance plate 32 is fixedly connected with a moving rod 321, the side surface of the moving rod 321 is connected with the inner side of the support plate 102, the top end of the balance plate 32 is fixedly connected with an elastic spring 322, the top end of the elastic spring 322 is fixedly connected with the bottom end of the support plate 102, and the bottom end of the balance plate 32 is fixedly connected with the top end of the moving support rod 201.

[0024] When the rotating disc 31 rotates around the rotating rod 311, the balance plate 32 and the pressing rod 42 are simultaneously driven to move up and down, the elastic spring 322 on the side surface of the moving rod 321 provides power for the movement of the balance plate 32, since the moving roller 324 slides on the inner side of the rotating disc 31, through the connection between the moving rod 321 and the support plate 102, the movement of the balance plate 32 is limited, so that it only moves in the vertical direction of the moving rod 321, the moving support rod 201 is driven to cut the steel frame to be cut 106 downward, and the guide rail 314 on the inner side of the rotating disc 31 provides a running track for the moving roller 324, so that the moving roller 324 is not easy to fall off the inner side of the rotating disc 31; The top end of the pressing rod 42 is connected with the inner side of the pressing groove 313. When the rotating disc 31 is pressed, the pressing spring 433 fixed at the bottom end of the connecting table 432 is compressed, and when the rotating disc 31 rises, the pressing spring 433 at the bottom of the connecting table 432 is pressed to lift the pressing rod 42, so that it can be connected with the inner side of the pressing groove 313 and is not easy to be separated from it.

[0025] Referring to Figures 5 to 7 , Figure 9 The side of the control plate 41 is provided with a vertical guide groove 412, the inner side of the vertical guide groove 412 is connected with the side of the guide rod 107, the side of the inner fixed table 421 is provided with a placing groove 422, the inner side of the placing groove 422 is connected with a ball 423, the side of the ball 423 is connected with the inner side of the control plate 41, the bottom end of the inner fixed table 421 is provided with a rotating groove 424, the inner side of the rotating groove 424 is connected with a T-shaped rotating rod 431.

[0026] The bottom end of the T-shaped rotating rod 431 is fixedly connected with a connecting table 432, the side of the connecting table 432 is fixedly connected with a moving frame 43, the bottom end of the connecting table 432 is fixedly connected with a pressing spring 433, the bottom end of the pressing spring 433 is fixedly connected with a fixed plate 437, the side of the fixed plate 437 is fixedly connected with the side of the L-shaped bearing plate 101, the top end of the fixed plate 437 is fixedly connected with a limiting tube 435, the bottom end of the connecting table 432 is fixedly connected with a T-shaped rod 434, the bottom end of the T-shaped rod 434 is connected with the inner side of the limiting tube 435, the inner side of the limiting tube 435 is fixedly connected with a monitoring ring 436, the side of the moving frame 43 is fixedly connected with the bottom end of the buffer mechanism 5.

[0027] The ball 423 is connected with the control plate 41 at the inner side of the inner fixed table 421, so the inner fixed table 421 moves with the movement of the guide rod 107 in the arc-shaped guide groove 411 and the vertical guide groove 412 on the side of the control plate 41, the pressing rod 42 and the T-shaped rotating rod 431 at both ends of the inner fixed table 421 can rotate and are not affected by the rotation of the vertical guide groove 412, the buffer mechanism 5 is fixed at the bottom end of the moving frame 43, so it moves with the rotation of the rotating disc 31 and drives the moving frame 43 and the buffer mechanism 5 to move, in order to reduce the surface burrs of the cut steel frame 106, the pressure of the cut steel frame 106 is reduced before the cutting is completed, so when the T-shaped rod 434 moves to the bottom end of the inner side of the limiting tube 435, the T-shaped rod 434 cuts off the signal transmission between the monitoring rings 436, so as to start the pressing cylinder 51 to release the surface pressure of the cut steel frame 106, since the moving distance of the moving frame 43 is the same as the moving distance of the moving support rod 201, it is more complete for cutting the same type of steel.

[0028] Referring to Figure 8The buffer mechanism 5 comprises a pressurized cylinder 51 and a clamping rod 52, the bottom end of the pressurized cylinder 51 is fixedly connected with the side of the moving frame 43, the bottom end of the pressurized cylinder 51 is fixedly connected with a lower pressing rod 511, the bottom end of the lower pressing rod 511 is fixedly connected with a connecting plate 512, the side of the connecting plate 512 is fixedly connected with a lower pressing plate 513, the side of the lower pressing plate 513 is connected with a linkage plate 523, the side of the linkage plate 523 is connected with the side of the clamping rod 52, the side of the clamping rod 52 is connected with a support frame 521, the top end of the support frame 521 is fixedly connected with the bottom end of the moving frame 43, the inner side of the support frame 521 is connected with a I-shaped connecting rod 522, the bottom end of the clamping rod 52 is fixedly connected with a clamping arc plate 524, and the side of the clamping arc plate 524 is connected with the side of the steel frame to be cut 106.

[0029] When starting to press the steel frame to be cut 106, the lower pressing rod 511 is in an extended state, so the lower pressing plate 513, the linkage plate 523 and the clamping arc plate 524 are in contact with the steel frame to be cut 106, and the lower pressing plate 513 and the linkage plate 523 are the force applying parts; since the two ends of the connecting plate 512 are fixedly connected with the side of the lower pressing plate 513, the connecting plate 512 moves along with the extension and retraction of the lower pressing rod 511; when it is necessary to unload the clamping of the steel frame to be cut 106 within a certain range, the pressurized cylinder 51 is started to drive the lower pressing rod 511 to retract, so that the lower pressing plate 513 is moved upward, the angle between the linkage plate 523 and the lower pressing plate 513 is changed, the clamping arc plate 524 is moved to the side of the steel frame to be cut 106 for clamping, and the pressure on the side of the steel frame to be cut 106 is greatly reduced, so that the cutting of the cutting tool 205 on the steel frame to be cut 106 is more smooth; the support frame 521 and the clamping rod 52 are connected through the I-shaped connecting rod 522 and can rotate relative to each other.

[0030] The working principle of the present application is as follows: the driving motor 312 is started to drive the rotating rod 311, the rotating rod 311 is fixed at the edge of the rotating disc 31, so that the rotating disc 31 rotates around the rotating rod 311 and the moving roller 324 slides on the inner side of the rotating disc 31; due to the limiting effect of the rotating disc 31, when the balance plate 32 connected with the T-shaped connecting rod 323 fixed on the side of the moving roller 324 moves, the moving support rod 201 is lowered to drive the placement table 203 to move downward, the steel frame to be cut 106 is cut by the cutting tool 205, the moving rod 321 fixed at the top end of the balance plate 32 is guided by the inner side of the support plate 102 to move upward and downward in the direction of the moving rod 321, so that the moving support rod 201 moves synchronously, the middle of the fixed frame 104 fixed at the top end of the L-shaped bearing plate 101 has the supporting roller 105, the steel frame to be cut 106 is supported by the two supporting rollers 105 for cutting by the cutting tool 205, and the clamping arc plate 524 connected with the side of the steel frame to be cut 106 is used for fixing; The inner side of the pressurizing groove 313 on the outer side of the rotating disc 31 is connected with the side surface of the pressurizing rod 42, and the control plate 41 is moved downward by the pressurizing rod 42 during the rotation of the rotating disc 31. The buffer mechanism 5 fixed at the bottom end of the moving frame 43 clamps and pressurizes the steel frame 106 to be cut. When the moving roller 324 slides on the side surface of the guide rail 314 on the inner side of the rotating disc 31 and drives the moving support rod 201 to move downward, the inner side of the pressurizing groove 313 on the outer side of the rotating disc 31 exerts a downward pressing action on the pressurizing rod 42. The guide rod 107 fixed on the side surface of the L-shaped bearing plate 101 slides on the inner side of the vertical guide groove 412, drives the T-shaped rotating rod 431 connected with the bottom end of the inner fixed table 421 to move, and drives the moving frame 43 fixed on the side surface of the connecting table 432 to move downward. The connecting table 432 compresses the pressurizing spring 433 during the movement, balances the pressure at the upper end, and the inner side of the pressurizing spring 433 moves in the limiting tube 435 along with the compression of the pressurizing spring 433. Since the movement of the moving frame 43 and the movement of the cutting tool 205 are both realized by the rotation of the rotating disc 31 around the rotating rod 311, the distance of the downward pressing of the moving frame 43 is the same as the distance of the movement of the cutting tool 205. Therefore, the clamping action on the steel frame 106 to be cut can be adjusted according to the cutting depth, and the burr problem of the cutting surface can be alleviated. As the cutting depth of the cutting tool 205 on the steel frame 106 to be cut increases, the force exerted by the buffer mechanism 5 fixed at the bottom end of the moving frame 43 on the steel frame 106 to be cut also gradually increases. When the cutting of the cutting tool 205 on the steel frame 106 to be cut is about to end, the clamping action on the steel frame 106 to be cut needs to be reduced, so as to reduce the possibility of deformation of the steel frame 106 to be cut. During the movement of the connecting table 432 driving the T-shaped rod 434 to move in the limiting tube 435, since the monitoring ring 436 exists near the bottom end of the limiting tube 435, when the bottom end of the T-shaped rod 434 moves to the position of the monitoring ring 436, the conductivity of the monitoring ring 436 is blocked, so as to drive the pressurizing cylinder 51 to operate. Before the operation, due to the fixed action of the downward pressing rod 511, the steel frame 106 to be cut and the downward pressing plate 513 and the linkage plate 523 are fixed at an angle, and are clamped. When the pressurizing cylinder 51 is started, the downward pressing rod 511 is retracted upward, drives the connecting plate 512 to move upward, so as to change the angle between the downward pressing plate 513 and the linkage plate 523, so that the pressure on the top end of the steel frame 106 to be cut is reduced, and the burr and deformation caused by the end of the cutting of the cutting tool 205 are alleviated.

[0031] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic cutting device for steel frame in sofa bed, comprising a supporting mechanism (1), characterized in that: It also includes cutting mechanism (2), moving mechanism (3), pressing mechanism (4) and buffer mechanism (5), the side of the support mechanism (1) is fixedly connected with the side of moving mechanism (3), the bottom end of moving mechanism (3) is fixedly connected with the top end of cutting mechanism (2), the bottom end of moving mechanism (3) is connected with the top end of pressing mechanism (4), the side of pressing mechanism (4) is fixedly connected with the bottom end of buffer mechanism (5); The moving mechanism (3) includes a rotating disc (31) and a balance plate (32), the inner side of the rotating disc (31) is fixedly connected with a guide rail (314), the side of the guide rail (314) is connected with the side of the moving roller (324), the outer side of the rotating disc (31) is provided with a pressing groove (313), and the inner side of the pressing groove (313) is connected with the side of the pressing mechanism (4); The pressing mechanism (4) includes a control panel (41) and a pressing rod (42), the inner side of the control panel (41) is connected with an inner fixed table (421), the top end of the inner fixed table (421) is connected with the bottom end of the pressing rod (42), the side of the control panel (41) is provided with an arc-shaped guide groove (411), and the inner side of the arc-shaped guide groove (411) is connected with the side of the support mechanism (1).

2. An automatic cutting device for steel frame in sofa bed according to claim 1, characterized in that: The support mechanism (1) includes an L-shaped bearing plate (101) and a steel frame to be cut (106), the side of the L-shaped bearing plate (101) is fixedly connected with a support plate (102), the side of the L-shaped bearing plate (101) is provided with a rotating groove (103), the top end of the L-shaped bearing plate (101) is fixedly connected with a fixed frame (104), the side of the fixed frame (104) is connected with a support roller (105), the side of the support roller (105) is connected with the side of the steel frame to be cut (106), the side of the L-shaped bearing plate (101) is fixedly connected with a guide rod (107), and the side of the guide rod (107) is connected with the side of the arc-shaped guide groove (411).

3. The automatic cutting device for the steel frame in the sofa bed according to claim 1, characterized in that: The cutting mechanism (2) includes a moving support rod (201) and a knife guard cover (204), the bottom end of the moving support rod (201) is fixedly connected with a placing table (203), the side of the placing table (203) is fixedly connected with a rotating motor (202), the side of the rotating motor (202) is connected with the side of the knife guard cover (204), the top end of the rotating motor (202) is fixedly connected with a cutting tool (205), and the top end of the moving support rod (201) is fixedly connected with the bottom end of the moving mechanism (3).

4. The automatic cutting device for the steel frame in the sofa bed according to claim 1, characterized in that: The side of the rotating disc (31) is fixedly connected with a rotating rod (311), the side of the rotating rod (311) is connected with the side of the rotating groove (103), the side of the rotating rod (311) is fixedly connected with a driving motor (312), the side of the driving motor (312) is fixedly connected with the side of the L-shaped bearing plate (101), the inner side of the moving roller (324) is connected with a T-shaped connecting rod (323), and the top end of the T-shaped connecting rod (323) is fixedly connected with the side of the balance plate (32).

5. An automatic cutting device for steel frame in sofa bed according to claim 4, characterized in that: The side of the mobile roller (324) is provided with a guide ring groove (325), the inner side of the guide ring groove (325) is connected with the side of the guide rail (314), the top end of the balance plate (32) is fixedly connected with a moving rod (321), the side of the moving rod (321) is connected with the inner side of the supporting plate (102), the top end of the balance plate (32) is fixedly connected with an elastic spring (322), the top end of the elastic spring (322) is fixedly connected with the bottom end of the supporting plate (102), and the bottom end of the balance plate (32) is fixedly connected with the top end of the moving supporting rod (201).

6. An automatic cutting device for steel frame in sofa bed according to claim 1, characterized in that: The side of the control plate (41) is provided with a vertical guide groove (412), the inner side of the vertical guide groove (412) is connected with the side of the guide rod (107), the side of the inner fixing table (421) is provided with a placing groove (422), the inner side of the placing groove (422) is connected with a ball (423), the side of the ball (423) is connected with the inner side of the control plate (41), and the bottom end of the inner fixing table (421) is provided with a rotating groove (424), the inner side of the rotating groove (424) is connected with a T-shaped rotating rod (431).

7. An automatic cutting device for steel frame in sofa bed according to claim 6, characterized in that: The bottom end of the T-shaped rotating rod (431) is fixedly connected with a connecting table (432), the side of the connecting table (432) is fixedly connected with a moving frame (43), the bottom end of the connecting table (432) is fixedly connected with a pressurizing spring (433), the bottom end of the pressurizing spring (433) is fixedly connected with a fixed plate (437), the side of the fixed plate (437) is fixedly connected with the side of the L-shaped bearing plate (101), the top end of the fixed plate (437) is fixedly connected with a limiting tube (435), the bottom end of the connecting table (432) is fixedly connected with a T-shaped rod (434), the bottom end of the T-shaped rod (434) is connected with the inner side of the limiting tube (435), the inner side of the limiting tube (435) is fixedly connected with a monitoring ring (436), and the side of the moving frame (43) is fixedly connected with the bottom end of the buffer mechanism (5).

8. The automatic cutting device for the steel frame in the sofa bed according to claim 1, characterized in that: The buffer mechanism (5) comprises a pressurizing cylinder (51) and a clamping rod (52), the bottom end of the pressurizing cylinder (51) is fixedly connected with the side of the moving frame (43), the bottom end of the pressurizing cylinder (51) is fixedly connected with a pressing rod (511), the bottom end of the pressing rod (511) is fixedly connected with a connecting plate (512), the side of the connecting plate (512) is fixedly connected with a pressing plate (513), the side of the pressing plate (513) is connected with a linkage plate (523), the side of the linkage plate (523) is connected with the side of the clamping rod (52), the side of the clamping rod (52) is connected with a support frame (521), the top end of the support frame (521) is fixedly connected with the bottom end of the moving frame (43), the inner side of the support frame (521) is connected with a I-shaped connecting rod (522), the bottom end of the clamping rod (52) is fixedly connected with a clamping arc plate (524), and the side of the clamping arc plate (524) is connected with the side of the steel frame (106) to be cut.

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