CN117299883A - Bending machine capable of adjusting plate machining position - Google Patents

Abstract

The invention discloses a bending machine capable of adjusting a plate processing position, and relates to the technical field of bending machines, comprising a feeding mechanism and a bending mechanism which are arranged side by side, wherein the feeding mechanism is used for automatically feeding the bending mechanism; the bending mechanism comprises a main body frame, a supporting frame is fixedly arranged at the front end of the main body frame, and a feeding assembly is arranged on the supporting frame; the main body frame is provided with a pressing component, a bending component and an adjusting component, the bending component is used for bending the plate, the pressing component is used for pressing the plate when the plate is bent, and the adjusting component is used for adjusting the position of the plate on the bending component; the feeding mechanism comprises a storage rack for storing plates, and a feeding assembly for automatic feeding is arranged on the storage rack; according to the invention, the bending processing of the plate can be flexibly adjusted by arranging the adjusting component, so that the manual pushing of workers in the processing process is avoided, and the workload can be reduced, thereby improving the efficiency.

Description

A bending machine with adjustable plate processing position

Technical field

The invention relates to the technical field of bending machines, and in particular to a bending machine with adjustable plate processing position.

Background technique

A bending machine is a machine that can bend thin plates. During the use of the existing bending machine, the thin plate to be bent is placed on the workbench, and the upper bending die moves downward to bend the thin plate together with the lower bending die. Hydraulic bending machines are widely used in workpiece bending operations due to their advantages of simple operation, low cost and fast response speed. Hydraulic bending machines generally include a bracket, a workbench, a hydraulic drive system and a mold. The bracket generally adopts a cantilever structure to fix the hydraulic cylinder. The hydraulic cylinder controls the movement of the mold through its control system to complete the bending work.

However, during the working process of the current bending machine, when the position of the bent plate needs to be adjusted, the staff usually manually pushes the plate. This adjustment method has poor accuracy on the one hand, high labor intensity on the other hand, and Safety accidents may occur if the body enters the bending machine.

Contents of the invention

The object of the present invention is to provide a bending machine with an adjustable plate processing position, so as to solve the technical problem that the bending machine needs to manually adjust the bending position of the plate during operation.

The object of the present invention can be achieved through the following technical solutions: a bending machine with an adjustable plate processing position, including a feeding mechanism and a bending mechanism arranged side by side, wherein the feeding mechanism is used to automatically feed the bending mechanism; The bending mechanism includes a main frame, a support frame is fixed at the front end of the main frame, and a feeding assembly is installed on the support frame; a pressing assembly, a bending assembly and an adjustment assembly are installed on the main frame. , the bending assembly is used to bend the plate, the pressing assembly is used to press the plate tightly when bending the plate, and the adjusting assembly is used to adjust the position of the plate on the bending assembly;

The loading mechanism includes a storage rack for storing sheets, and a loading assembly for automatic loading is installed on the storage rack.

As a further solution of the present invention: the adjustment assembly includes two sets of adjustment brackets fixedly installed on the upper end of the main frame, a sliding frame is slidably provided on the adjustment bracket, and an adjustment support is fixedly connected between the two sets of sliding frames, so A screw slider is slidably connected to the adjustment support, and an adjustment mechanism is fixedly installed at the lower end of the screw slider.

As a further solution of the present invention: an adjustment screw is rotatably mounted on the adjustment support, an adjustment motor for driving the adjustment screw to rotate is fixedly installed on the adjustment support, and the screw slider is threadedly connected to the adjustment screw. on the pole.

As a further solution of the present invention: the adjustment mechanism includes a lifting cylinder fixedly installed on the lower end of the screw slider, the output end of the lifting cylinder is fixedly connected to an adjusting plate, and the center of the lower end of the adjusting plate is fixedly connected to an inverted T-shaped seat. , two sets of pressure plate oil cylinders are fixedly installed on the adjustment plate, and the upper pressure plate is fixedly connected to the output end of the pressure plate oil cylinder.

As a further solution of the present invention: two groups of the bending components are provided and symmetrically distributed on both sides of the pressing component.

As a further solution of the present invention: the bending assembly includes a bending oil cylinder that is rotatably installed in the main frame and a fixed support that is fixedly installed at the upper end of the main frame. Bending push plate, the bending push plate is rotationally connected to the output end of the bending cylinder.

As a further solution of the present invention: the pressing assembly includes a pressing bracket fixedly installed on the upper end of the main frame, a pressing top plate is fixedly installed on the upper part of the pressing bracket, and a pressing oil cylinder is fixedly installed on the pressing top plate. , the output end of the pressing oil cylinder is fixedly connected with a lifting plate, and two sets of pressing seats are fixedly provided on the lifting plate.

As a further solution of the present invention: the feeding assembly includes a feeding oil cylinder fixedly installed on the support frame, a feeding support is fixedly installed at the output end of the feeding oil cylinder, and multiple sets of belt conveying mechanisms are fixedly provided on the feeding support. .

As a further solution of the present invention: a driving shaft is rotatably installed on the feeding support, and the driving shaft is connected to multiple groups of the belt conveying mechanisms. A motor base is fixedly installed on the feeding support, and the motor base is fixedly mounted on the feeding support. A feeding motor is fixedly installed, and the output end of the feeding motor is drivingly connected to the drive shaft through a belt transmission mechanism.

As a further solution of the present invention: the loading assembly includes a loading top plate fixedly installed on the top of the storage rack, a loading oil cylinder is fixedly installed on the loading top plate, and the output end of the loading oil cylinder is fixedly connected with a lifting device The lower end of the lifting frame is slidably provided with a loading carriage, and a plurality of loading suction cups are installed on the loading carriage.

Beneficial effects of the present invention:

By setting the adjustment component, the bending process of the plate can be flexibly adjusted to avoid the need for workers to manually push during the processing. On the one hand, it can reduce the workload and improve efficiency, and on the other hand, it can avoid the danger of workers' bodies entering the bending machine. .

By arranging upper pressure plates and pressure plate cylinders on both sides of the T-shaped base, the plate can be adjusted in both left and right directions, with a wider and more flexible adjustment range.

Two sets of press seats correspond to two sets of bending components, which press the plate tightly when the two sets of bending components are bent. There are two sets of positioning pins at the lower part of the press seat, and the fixed support of the bending component is provided with The positioning holes corresponding to the positioning pins can ensure stable compression of the plate when bending, improve the stability of the plate during bending, thereby improving the bending accuracy.

The loading component and the feeding component are set up to realize automatic loading for plate bending, effectively reducing manual operations and improving bending processing efficiency.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic structural diagram of the feeding assembly of the present invention;

Figure 3 is a schematic three-dimensional structural diagram of the bending mechanism of the present invention;

Figure 4 is a schematic rear structural view of the bending mechanism of the present invention;

Figure 5 is a schematic three-dimensional structural diagram of the feeding assembly of the present invention;

Figure 6 is a schematic front structural view of the feeding assembly of the present invention;

Figure 7 is a schematic structural diagram of the pressing assembly and the bending assembly of the present invention;

Figure 8 is a schematic three-dimensional structural diagram of the adjustment assembly of the present invention;

Figure 9 is a schematic front structural view of the adjustment assembly of the present invention;

Figure 10 is a schematic structural diagram of the adjustment mechanism of the present invention.

In the picture: 1. Main frame; 2. Storage rack; 3. Loading assembly; 31. Loading top plate; 32. Loading cylinder; 33. Lifting frame; 34. Loading guide rail; 35. Loading motor; 36. Feeding screw; 37. Feeding slide; 38. Guide rail slider; 39. Feeding suction cup; 4. Support frame; 5. Feeding component; 51. Feeding cylinder; 52. Feeding guide rod; 53. Feeding Support; 54. Belt conveying mechanism; 55. Belt transmission mechanism; 56. Driving shaft; 57. Motor base; 58. Feeding motor; 6. Pressing component; 61. Pressing bracket; 62. Auxiliary bracket; 63. Pressing Material top plate; 64. Pressing cylinder; 65. Pressing guide rod; 66. Lifting plate; 67. Pressing seat; 68. Positioning pin; 7. Bending component; 71. Connecting seat; 72. Bending cylinder; 73 , Fixed support; 74. Bending push plate; 75. Connecting shaft; 76. Positioning hole; 8. Adjustment component; 81. Adjustment bracket; 82. Vertical plate; 83. Translation cylinder; 84. Sliding frame; 85. Adjustment Support; 86, adjusting motor; 87, adjusting screw rod; 88, screw rod slider; 89, adjusting mechanism; 891, lifting cylinder; 892, adjusting plate; 893, T-shaped seat; 894, pressure plate cylinder; 895, upper Pressure plate; 9. Limit baffle.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1 to 4. The present invention is a bending machine with an adjustable plate processing position, including a loading mechanism and a bending mechanism arranged side by side, where the loading mechanism is used to automatically load the bending mechanism; The bending mechanism includes a main frame 1. The front end of the main frame 1 is fixed with a support frame 4, and a feeding assembly 5 is installed on the support frame 4. The main frame 1 is equipped with a pressing assembly 6, a bending assembly 7 and an adjustment assembly. 8. The bending assembly 7 is used to bend the plate, the pressing assembly 6 is used to press the plate tightly when bending the plate, and the adjusting assembly 8 is used to adjust the position of the plate on the bending assembly 7; the loading mechanism includes On the storage rack 2 for storing sheets, a loading assembly 3 for automatic loading is installed on the storage rack 2 .

The main frame 1 is fixedly provided with a plurality of limit baffles 9 for limiting the feeding and bending of sheet materials. The limiting baffles 9 can make the sheet feeding more accurate.

Please refer to Figures 1, 8 to 10. The adjustment assembly 8 includes two sets of adjustment brackets 81 fixedly installed on the upper end of the main frame 1, and the side of the adjustment bracket 81 close to the feeding assembly 5 extends out of the main frame 1. When the plate is being bent, the adjustment mechanism 89 can be moved to the end of the adjustment bracket 81 to ensure that it does not interfere with the bending of the plate.

The upper end of the adjustment bracket 81 is fixedly provided with a vertical plate 82. A translation cylinder 83 is fixedly installed horizontally on the vertical plate 82. A sliding frame 84 is provided slidingly on the adjusting bracket 81. The output end of the translation cylinder 83 is fixedly connected to the sliding frame 84. The translation cylinder 83 drives the sliding frame 84 to slide on the adjusting bracket 81. An adjusting support 85 is fixedly connected between the two sets of sliding frames 84. A screw slider 88 is slidingly connected to the adjusting support 85, and the lower end of the screw slider 88 is fixed. An adjustment mechanism 89 is installed.

An adjusting screw rod 87 is rotatably installed on the adjusting support 85 . An adjusting motor 86 for driving the adjusting screw rod 87 to rotate is fixedly installed on the adjusting support 85 . The screw slider 88 is threadedly connected to the adjusting screw rod 87 .

The adjusting mechanism 89 includes a lifting cylinder 891 fixedly installed at the lower end of the screw slider 88. The output end of the lifting cylinder 891 is fixedly connected to an adjusting plate 892. The lower end of the adjusting plate 892 is fixedly connected to an inverted T-shaped seat 893 at its center. The adjusting plate 892 is fixed on the upper end. Two sets of pressure plate oil cylinders 894 are installed, and an upper pressure plate 895 is fixedly connected to the output end of the pressure plate oil cylinder 894.

After the feeding assembly 5 sends the plate between the pressing assembly 6 and the bending assembly 7, the plate is bent through the cooperation of the pressing assembly 6 and the bending assembly 7. When it is necessary to adjust the bending position , then the translation cylinder 83 drives the sliding frame 84 to slide on the adjusting bracket 81, so that the adjusting mechanism 89 moves to the middle position of the side of the plate, and the adjusting motor 86 drives the adjusting screw 87 to rotate, and the screw transmission principle is used to drive the screw slider 88 and the adjusting mechanism 89 move to one side of the plate, and then the lifting cylinder 891 drives the adjusting plate 892 to move downward, so that the plate is located between the bottom plate of the T-shaped seat 893 and the upper pressure plate 895, and the adjusting mechanism is driven by the screw drive. 89 moves toward the plate, and then the pressure plate cylinder 894 drives the upper platen 895 to move downward, clamping the plate on the T-shaped seat 893, and then drives the plate to move left or right through the screw drive to realize automatic adjustment of the bending position. .

By disposing the upper pressure plate 895 and the pressure plate oil cylinder 894 on both sides of the T-shaped base 893, the left and right directions of the plate can be adjusted, and the adjustment range is larger and more flexible.

After the position adjustment of the plate is completed, the processed plate can also be reset to facilitate the transportation of the plate. By setting the adjustment component 8, the bending processing of the plate can be flexibly adjusted to avoid the need for manual pushing by workers during the processing. On the one hand, it can reduce the workload and improve efficiency; on the other hand, it can avoid the danger of workers' bodies entering the bending machine.

In order to ensure the accuracy of position adjustment, a corresponding position sensor or displacement sensor can be installed on the adjustment mechanism 89 to ensure accurate adjustment of the plate.

Please refer to Figure 1, Figure 3 and Figure 4. There are two sets of bending components 7 and they are symmetrically distributed on both sides of the pressing component 6. The two sets of bending components 7 can work at the same time or independently. Working at the same time can Improve the bending efficiency of the plate, and work alone to process one side.

The bending assembly 7 includes a connecting seat 71 fixedly installed in the main frame 1 and a fixed support 73 fixedly installed at the upper end of the main frame 1. A bending oil cylinder 72 is rotatably installed on the connecting seat 71, and a bending cylinder 72 is installed on the fixed support 73. A bending push plate 74 is rotatably mounted on the connecting shaft 75 , and the bending push plate 74 is rotatably connected to the output end of the bending oil cylinder 72 .

When the plate needs to be bent, the feeding assembly 5 will transport the plate to the fixed support 73. After adjusting the position of the plate through the adjusting assembly 8, the pressing assembly 6 will press the plate on the fixed support 73. The bending cylinder 72 drives the bending push plate 74 to rotate, and the bending push plate 74 is used to bend the plate.

Please refer to Figures 1 and 7. The pressing assembly 6 includes a pressing bracket 61 fixedly installed on the upper end of the main frame 1. Both ends of the pressing bracket 61 are fixed with auxiliary brackets 62. The arrangement of the auxiliary brackets 62 improves the The pressure bracket 61 is installed stably.

The upper part of the pressing bracket 61 is fixedly provided with a pressing top plate 63. A pressing oil cylinder 64 is fixedly installed on the pressing top plate 63. The output end of the pressing oil cylinder 64 is fixedly connected with a lifting plate 66. Multiple groups are fixedly provided on the lifting plate 66. The pressing guide rods 65 are distributed in an annular array. The pressing guide rods 65 are slidingly connected to the pressing top plate 63. The pressing guide rods 65 play a guiding role in the lifting and lowering of the lifting plate 66, thereby ensuring the lifting and lowering of the lifting plate 66. of stability.

Two sets of press seats 67 are fixedly provided on the lifting plate 66. The two sets of press seats 67 correspond to the two sets of bending assemblies 7. When the two sets of bending assemblies 7 are bent, the plate is pressed tightly. The press seats 67 There are two sets of positioning pins 68 at the lower part, and the fixed support 73 of the bending assembly 7 is provided with positioning holes 76 corresponding to the positioning pins 68, which can ensure stable compression of the plate when bending, and improve the bending of the plate. stability, thereby improving bending accuracy.

Please refer to Figure 1, Figure 5 and Figure 6. The feeding assembly 5 includes a feeding cylinder 51 fixedly installed on the support frame 4. The output end of the feeding cylinder 51 is fixedly installed with a feeding support 53, and the lower end of the feeding support 53 is fixed. A plurality of feeding guide rods 52 are provided, and the feeding guide rods 52 are slidably connected to the support frame 4 . A plurality of sets of belt conveying mechanisms 54 are fixedly provided on the feeding support 53 .

The feeding cylinder 51 drives the feeding support 53 to move up and down. When the sheet material needs to be fed or discharged, the feeding support 53 moves upward under the action of the feeding cylinder 51 so that the upper end of the belt conveying mechanism 54 is higher than the fixed support. 73, the plate is transported to the top of the fixed support 73 through the belt conveyor mechanism 54, and then the feeding support 53 moves downward, and the plate falls onto the fixed support 73 to wait for bending. When the bending is completed, the material is fed The support 53 moves upward to lift up the plate, and then the plate is withdrawn under the action of the belt conveying mechanism 54 .

A driving shaft 56 is rotatably installed on the feeding support 53, and the driving shaft 56 is connected to multiple sets of belt conveying mechanisms 54. A motor base 57 is fixedly installed on the feeding support 53, and a feeding motor 58 is fixedly installed on the motor base 57. The feeding motor 58 The output end is transmission connected with the drive shaft 56 through the belt transmission mechanism 55.

Synchronous driving of multiple belt conveying mechanisms 54 is realized through one driving shaft 56, which can effectively reduce the number of feeding motors 58, reduce energy consumption and reduce equipment costs.

The loading assembly 3 includes a loading top plate 31 fixedly installed on the top of the storage rack 2. A loading oil cylinder 32 is fixedly installed on the loading top plate 31. The output end of the loading oil cylinder 32 is fixedly connected to a lifting frame 33. The lifting frame 33 slides It is connected to the storage rack 2 to ensure the stability of the lifting rack 33 during lifting. A loading slide 37 is slidably provided at the lower end of the lifting rack 33, and a plurality of loading suction cups 39 are installed on the loading slide 37.

The lower end of the lifting frame 33 is fixedly provided with two sets of loading guide rails 34. A guide rail slider 38 is slidably provided on the loading guide rail 34. The guide rail slider 38 is fixedly installed on the loading slider 37 to ensure that the loading slider 37 is in position. Stability while sliding.

A feeding screw 36 is rotatably installed at the lower end of the lifting frame 33. A feeding motor 35 is also fixedly installed on the lifting frame 33. The output end of the feeding motor 35 is fixedly connected to the feeding screw 36. The feeding screw 36 The thread is connected with a screw seat, and the screw seat is fixedly installed on the loading carriage 37. The loading motor 35 drives the loading screw 36 to rotate, and the screw transmission principle is used to drive the loading carriage 37 along the loading guide rail. 34 slides, thereby feeding the plate onto the feeding assembly 5 .

The loading component 3 and the feeding component 5 are provided to realize automated loading of plate bending, effectively reducing manual operations and improving bending processing efficiency.

In another optional embodiment, the above-mentioned oil cylinder can be replaced with a cylinder, an electric telescopic rod and other linear drive devices, and can be replaced according to actual production and use requirements.

The working principle of the present invention: the plates are stored on the storage rack 2, the loading cylinder 32 drives the lifting frame 33 to move downward, the stored plates are sucked up by the loading suction cup 39, and then the loading cylinder 32 drives the lifting frame 33 to reset upwards , the loading motor 35 drives the loading screw 36 to rotate, and uses the screw transmission principle to drive the loading carriage 37 to slide along the loading guide rail 34, thereby feeding the plate onto the feeding assembly 5.

The plate is placed on the belt conveying mechanism 54, and the feeding support 53 moves upward under the action of the feeding cylinder 51, so that the upper end of the belt conveying mechanism 54 is higher than the upper end of the fixed support 73, and the feeding motor 58 drives the belt conveying mechanism 54 to rotate. The sheet material is transported to the top of the fixed support 73, and then the feeding support 53 moves downward, and the sheet material falls onto the fixed support 73 to wait for bending.

After adjusting the position of the plate through the adjusting assembly 8, the pressing assembly 6 presses the plate on the fixed support 73, drives the bending push plate 74 to rotate through the bending cylinder 72, and uses the bending push plate 74 to bend the plate. Processing, when the bending is completed, the feeding support 53 moves upward to lift the plate, and then the plate is withdrawn under the action of the belt conveyor mechanism 54.

An embodiment of the present invention has been described in detail above, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the implementation scope of the present invention. All equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of the patent of the present invention.

Claims (10)

1. The bending machine comprises a feeding mechanism and a bending mechanism which are arranged side by side, wherein the feeding mechanism is used for automatically feeding the bending mechanism; the bending mechanism is characterized by comprising a main body frame (1), wherein a supporting frame (4) is fixedly arranged at the front end of the main body frame (1), and a feeding assembly (5) is arranged on the supporting frame (4);

the bending machine is characterized in that a pressing component (6), a bending component (7) and an adjusting component (8) are arranged on the main body frame (1), the bending component (7) is used for bending a plate, the pressing component (6) is used for pressing the plate when the plate is bent, and the adjusting component (8) is used for adjusting the position of the plate on the bending component (7);

the feeding mechanism comprises a storage rack (2) for storing plates, and a feeding assembly (3) for automatic feeding is arranged on the storage rack (2).

2. The bending machine with the adjustable plate machining position according to claim 1, wherein the adjusting assembly (8) comprises two groups of adjusting brackets (81) fixedly installed at the upper end of the main body frame (1), sliding frames (84) are slidably arranged on the adjusting brackets (81), adjusting supports (85) are fixedly connected between the two groups of sliding frames (84), screw rod sliding blocks (88) are slidably connected on the adjusting supports (85), and an adjusting mechanism (89) is fixedly installed at the lower end of each screw rod sliding block (88).

3. The bending machine with the adjustable plate processing position according to claim 2, wherein an adjusting screw rod (87) is rotatably mounted on the adjusting support (85), an adjusting motor (86) for driving the adjusting screw rod (87) to rotate is fixedly mounted on the adjusting support (85), and the screw rod sliding block (88) is in threaded connection with the adjusting screw rod (87).

4. The bending machine with the adjustable plate machining position according to claim 2, wherein the adjusting mechanism (89) comprises a lifting oil cylinder (891) fixedly installed at the lower end of the screw rod sliding block (88), an adjusting plate (892) is fixedly connected to the output end of the lifting oil cylinder (891), an inverted T-shaped seat (893) is fixedly connected to the center of the lower end of the adjusting plate (892), two groups of pressing plate oil cylinders (894) are fixedly installed on the adjusting plate (892), and an upper pressing plate (895) is fixedly connected to the output end of the pressing plate oil cylinder (894).

5. The bending machine with the adjustable plate processing position according to claim 1, wherein the bending assemblies (7) are provided with two groups and are symmetrically distributed on two sides of the pressing assembly (6).

6. The bending machine with the adjustable plate machining position according to claim 5, wherein the bending assembly (7) comprises a bending oil cylinder (72) rotatably installed in the main body frame (1) and a fixed support (73) fixedly installed at the upper end of the main body frame (1), a bending push plate (74) is rotatably installed on the fixed support (73) through a connecting shaft (75), and the bending push plate (74) is rotatably connected with the output end of the bending oil cylinder (72).

7. The bending machine with the adjustable plate machining position according to claim 1, wherein the material pressing assembly (6) comprises a material pressing support (61) fixedly installed at the upper end of the main body frame (1), a material pressing top plate (63) is fixedly arranged on the upper portion of the material pressing support (61), a material pressing oil cylinder (64) is fixedly installed on the material pressing top plate (63), a lifting plate (66) is fixedly connected to the output end of the material pressing oil cylinder (64), and two groups of material pressing seats (67) are fixedly arranged on the lifting plate (66).

8. The bending machine with the adjustable plate processing position according to claim 1, wherein the feeding assembly (5) comprises a feeding oil cylinder (51) fixedly installed on a supporting frame (4), a feeding support (53) is fixedly installed at the output end of the feeding oil cylinder (51), and a plurality of groups of belt conveying mechanisms (54) are fixedly arranged on the feeding support (53).

9. The bending machine with the adjustable plate processing position according to claim 8, wherein a driving shaft (56) is rotatably installed on the feeding support (53), the driving shaft (56) is connected with a plurality of groups of belt conveying mechanisms (54), a motor base (57) is fixedly installed on the feeding support (53), a feeding motor (58) is fixedly installed on the motor base (57), and an output end of the feeding motor (58) is in transmission connection with the driving shaft (56) through a belt transmission mechanism (55).

10. The bending machine with the adjustable plate processing position according to any one of claims 1 to 9, wherein the feeding assembly (3) comprises a feeding top plate (31) fixedly installed at the top of the storage rack (2), a feeding oil cylinder (32) is fixedly installed on the feeding top plate (31), an output end of the feeding oil cylinder (32) is fixedly connected with a lifting frame (33), a feeding sliding frame (37) is slidably arranged at the lower end of the lifting frame (33), and a plurality of feeding sucking discs (39) are installed on the feeding sliding frame (37).