Blowing device of plate stacking machine

Abstract

The utility model belongs to the technical field of air blowing devices, and particularly relates to an air blowing device of a sheet stacker, which comprises a base and a movable air blowing component arranged on the surface of the base, the movable air blowing component comprises push handles symmetrically arranged on one side of the base, the push handles are fixedly connected with the base, and the movable air blowing component is fixedly connected with the base. Universal wheels are fixedly connected to the lower surface of the base, a fan is mounted on the surface of the base, and corrugated pipes are symmetrically mounted on the surface of the fan; the air nozzle can be moved according to the requirements of workers and plates during working, the device can be used more flexibly, the capacity of the device for adapting to product specifications can be enhanced, the stacking requirement of more plates can be met, meanwhile, the telescopic assembly is additionally arranged, the height of the device can be adjusted according to the requirements of the workers, and the device is more convenient to use. And the requirement on the longitudinal height during plate stacking can be met to a greater extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of blowing devices of plate stackers, and particularly relates to a blowing device of a plate stacker. Background Art

[0002] When the sheet metal is sheared by the shearing machine and conveyed to the material collecting and stacking device, there will be a free fall process. During this process, the front shear surface of the falling sheet metal will first fall onto the surface of the lower panel material. When the front shear surface of the falling sheet metal slides over the surface of the lower panel material, it will cause damage to the sheet metal. Sometimes, it will cause the falling sheet metal to get stuck, which cannot meet the requirements of different specifications of sheets, the stacking is not neat, and the following sheets cannot enter the material collecting and stacking device, which has a greater impact on the stacking of the sheets;

[0003] Upon investigation, the publication (announcement) number: CN104420431B discloses a blower device, which discloses "including a main body housing, a motor disposed in the main body housing, a fan driven by the motor, a switch for controlling the motor to start and stop, and a blower pipe connected to the main body housing, the blower pipe including an air inlet close to the fan and an air outlet away from the fan, and other technical solutions, which have technical effects such as higher efficiency."

[0004] However, since the equipment is not designed with a movable device, it is not convenient for the staff to adjust the position, and the position of the blowing port is fixed and cannot be moved according to the needs of sheet stacking and the requirements of the staff. In addition, the height of the equipment cannot be adjusted. After the sheets are stacked to a certain height, the blowing device cannot be used, which affects the stacking of the sheets.

[0005] Therefore, a blowing device of a sheet material stacker is designed to solve the above problems. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a blowing device for a sheet material stacker, which can move the air nozzle according to the needs of the staff and the sheets during operation, making the use of the utility model more flexible, and can enhance the ability of the device to adapt to product specifications, meet the stacking needs of more sheets, and at the same time add a telescopic component, which can adjust the height of the device according to the needs of the staff, and can meet the longitudinal height requirements of sheet material stacking to a greater extent.

[0007] To achieve the above-mentioned object, the present utility model provides the following technical solution: a blowing device for a sheet material stacker, comprising a base, and also comprising a movable blowing assembly arranged on the surface of the base;

[0008] The mobile blowing assembly includes a push handle symmetrically arranged on one side of the base, the push handle is fixedly connected to the base, a universal wheel is fixedly connected to the lower surface of the base, a fan is installed on the surface of the base, a bellows is symmetrically installed on the surface of the fan, a wind nozzle is provided at one end of the bellows away from the fan, a top plate is provided on the surface of the base, a wind nozzle is provided on the surface of the top plate, a mounting groove 1 is opened on the surface of the top plate, a threaded rod 1 is provided on the inner side of the mounting groove 1, the threaded rod 1 is rotatably connected to the top plate, a servo motor 1 is provided on one side of the top plate, the output end of the servo motor 1 is fixedly connected to the threaded rod 1, the surface of the threaded rod 1 is threadedly connected to a threaded block, and the threaded block is fixedly connected to the surface of the wind nozzle.

[0009] As a preferred blowing device of a sheet metal stacker of the present invention: an air inlet is provided at one end of the air nozzle close to the threaded block, a circular groove is symmetrically provided at the end of the air nozzle close to the air inlet, an air outlet is provided at the end of the air nozzle away from the air inlet, a backward curved impeller is provided on the inner surface of the air nozzle, a rotating rod is rotatably connected to the inner surface of the air nozzle, a servo motor 2 is provided on the side of the air nozzle close to the servo motor 1, the output end of the servo motor 2 is fixedly connected to the rotating rod, and the rotating rod is fixedly connected to the backward curved impeller.

[0010] As a preferred blowing device of a sheet material stacker of the present invention, a slider is fixedly connected to the surface of the air nozzle, a slide groove 1 cooperating with the slider is opened on the surface of the top plate, and the slider is slidably connected to the slide groove 1.

[0011] As a preferred blowing device of a sheet metal stacker of the present invention, circular grooves are symmetrically provided at the bottom end of the air nozzle, the corrugated pipe is connected to the circular grooves by bolts, and the tail end of the corrugated pipe is installed at the air outlet of the fan.

[0012] As a preferred embodiment of the blowing device of the sheet material stacker of the present invention, it further includes a telescopic component provided on the surface of the base;

[0013] The telescopic assembly includes two mounting grooves symmetrically provided on the surface of the base, a slide groove 2 is provided inside the base, and the mounting groove 2 is communicated with the slide groove 2, a connecting block 1 and a connecting block 2 are symmetrically provided on the upper surface of the base, the connecting block 2 is fixedly connected to the base through the mounting groove 2, the connecting block 1 is slidably connected to the base through the mounting groove 2, a push rod is provided on the inner side of the slide groove 2, the push rod is fixedly connected to the connecting block 1, a cylinder is installed on the side of the base close to the connecting block 1, a push rod is provided on the side of the cylinder close to the base, the cylinder is slidably connected to the push rod, and a telescopic bracket is provided on the surfaces of the connecting block 1 and the connecting block 2.

[0014] As a preferred blowing device of a sheet material stacker of the present invention, the lower surface of the top plate is symmetrically provided with an installation groove three, the inner surface of the installation groove three is provided with a connecting block three, the bottom end of the connecting block three is fixedly connected to the limiting block, the top plate is provided with a limiting groove matching the limiting block through the installation groove three, the connecting block three is slidingly connected to the top plate, and the end of the top plate away from the connecting block three is symmetrically provided with a connecting block four, the connecting block four is fixedly connected to the top plate, and the surfaces of the connecting block three and the connecting block four are provided with the telescopic bracket.

[0015] As a preferred blowing device of a sheet material stacker of the present invention, the telescopic bracket includes a plurality of left support plates, right support plates and a fixed rod, the middle ends of each left support plate and each right support plate are hinged to each other, and both ends of each left support plate are hinged to the right support plate, and both ends of each right support plate are hinged to the left support plate, and a fixed rod is fixedly connected between the hinge points of each left support plate and the right support plate symmetrically arranged at one end away from the cylinder, the bottom end of the telescopic bracket is hinged to the connecting block one and the connecting block two, respectively, and the top end of the telescopic bracket is hinged to the connecting block three and the connecting block four, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are: a mobile blowing component is added to the present application, and the air nozzle can be moved according to the needs of the staff and the sheet materials during work, which can make the use of the device of the present invention more flexible, and can enhance the ability of the device to adapt to product specifications and meet the stacking needs of more sheet materials. At the same time, a telescopic component is added, and the height of the device can be adjusted according to the needs of the staff, which can meet the longitudinal height requirements when stacking the sheet materials to a greater extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the top plate in the utility model;

[0020] Figure 3 This is a schematic structural diagram of the base in the present utility model;

[0021] Figure 4 This is a structural diagram of the connecting block 1 in the present utility model;

[0022] Figure 5This is a schematic structural diagram of the connecting block three in the present invention;

[0023] Figure 6 This is a structural diagram of the left support plate in the utility model;

[0024] In the picture:

[0025] 1. Base;

[0026] 2. Mobile blower assembly; 21. Push handle; 22. Universal wheel; 23. Fan; 24. Bellows; 25. Nozzle; 26. Top plate; 27. Mounting slot 1; 28. Threaded rod 1; 29. ​​Threaded block; 210. Servo motor 1; 211. Air inlet; 212. Circular groove; 213. Air outlet; 214. Rotating rod; 215. Backward curved impeller; 216. Servo motor 2; 217. Slider; 218. Slide slot 1;

[0027] 3. Telescopic assembly; 31. Mounting slot 2; 32. Slide slot 2; 33. Connecting block 1; 34. Connecting block 2; 35. Push rod; 36. Cylinder; 37. Push rod; 39. Telescopic bracket; 310. Mounting slot 3; 311. Connecting block 3; 312. Connecting block 4; 313. Limiting slot; 314. Limiting block; 315. Left support plate; 316. Right support plate; 317. Fixing rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1 As shown;

[0031] A blowing device for a sheet material stacker comprises a base 1.

[0032] In this embodiment: the existing disclosure (announcement) number: CN104420431B discloses a blowing device. In order to solve the existing problems existing in this prior art, as disclosed in the background technology above, "the equipment is not designed with a moving device, which is not convenient for the staff to adjust the position, and the position of the blowing port is fixed and cannot be moved according to the needs of sheet stacking and the requirements of the staff, and the height of the equipment cannot be adjusted. After the sheets are stacked to a certain height, the blowing device cannot be used, which affects the stacking of the sheets." In terms of combined use, this problem is obviously a problem that exists and is difficult to solve. In view of this, in order to solve this technical problem, a movable blowing component 2 and a telescopic component 3 are added to this application document.

[0033] More specifically:

[0034] like Figures 1 to 6 As shown:

[0035] In combination with the above, it also includes a mobile blowing component 2 arranged on the surface of the base 1;

[0036] The mobile blowing assembly 2 includes a push handle 21 symmetrically arranged on one side of the base 1, the push handle 21 is fixedly connected to the base 1, and a universal wheel 22 is fixedly connected to the lower surface of the base 1. A fan 23 is installed on the surface of the base 1, and a bellows 24 is symmetrically installed on the surface of the fan 23. A nozzle 25 is provided at the end of the bellows 24 away from the fan 23. A top plate 26 is provided on the surface of the base 1, and the nozzle 25 is provided on the surface of the top plate 26. A mounting groove 27 is provided on the surface of the top plate 26, and a threaded rod 28 is provided on the inner side of the mounting groove 27. The threaded rod 28 is rotatably connected to the top plate 26. A servo motor 210 is provided on one side of the top plate 26, and the output end of the servo motor 210 is fixedly connected to the threaded rod 28. The surface of the threaded rod 28 is threadedly connected to a threaded block 29, and the threaded block 29 is fixedly connected to the surface of the nozzle 25.

[0037] In this embodiment: push the push handle 21 to push the device to the required position through the universal wheel 22, then start the fan 23, and the wind flows into the air nozzle 25 through the bellows 24. The back of the air nozzle 25 is fixedly connected to the threaded block 29, and the servo motor 210 fixed on the surface of the top plate 26 is turned on. The servo motor 210 drives the threaded rod 28 to rotate, and the threaded rod 28 drives the threaded block 29 to move left and right on the threaded rod 28, thereby driving the air nozzle 25 to move left and right. The air nozzle 25 can be moved to the required position according to the needs of the staff.

[0038] Going further:

[0039] In an optional embodiment: an air inlet 211 is provided at one end of the air nozzle 25 close to the threaded block 29, a circular groove 212 is symmetrically provided at one end of the air nozzle 25 close to the air inlet 211, an air exhaust port 213 is provided at one end of the air nozzle 25 away from the air inlet 211, a backward curved impeller 215 is provided on the inner surface of the air nozzle 25, a rotating rod 214 is rotatably connected to the inner surface of the air nozzle 25, a servo motor 216 is provided on the side of the air nozzle 25 close to the servo motor 1 210, the output end of the servo motor 216 is fixedly connected to the rotating rod 214, and the rotating rod 214 is fixedly connected to the backward curved impeller 215.

[0040] In this embodiment, wind is delivered to the air nozzle 25 through the circular groove 212, and then passes through the air inlet 211 to the air outlet 213, and passes through the backward curved impeller 215 in the middle. The backward curved impeller 215 is fixedly connected to the rotating rod 214. The servo motor 216 is started to rotate the rotating rod 214, thereby rotating the backward curved impeller 215, which can make the wind force at the air outlet 213 stronger. The rotation speed of the servo motor 216 can be controlled to control the rotation speed of the backward curved impeller 215. At the same time, the wind force of the air nozzle 25 can be controlled by adjusting the rotation speed of the servo motor 216.

[0041] Going further:

[0042] In an optional embodiment, a slider 217 is fixedly connected to the surface of the air nozzle 25, and a slide groove 218 that matches the slider 217 is opened on the surface of the top plate 26, and the slider 217 is slidably connected to the slide groove 218.

[0043] In this embodiment, when the nozzle 25 moves left and right, the position of the nozzle 25 is fixed by the slider 217, and the sliding path of the nozzle 25 is limited by the slide groove 218, so that the nozzle 25 can be fixed and limited.

[0044] Going further:

[0045] In an optional embodiment, a circular groove 212 is symmetrically provided at the bottom end of the air nozzle 25 , the bellows 24 is connected to the circular groove 212 by bolts, and the tail end of the bellows 24 is installed at the air outlet of the fan 23 .

[0046] In this embodiment, the fan 23 delivers wind to the bellows 24, and the bellows 24 delivers wind to the air nozzle 25 through the circular groove 212, so that the air nozzle 25 can deliver wind to the position where air is needed when the sheets are stacked.

[0047] Going further:

[0048] In an optional embodiment, it further includes a telescopic component 3 arranged on the surface of the base 1;

[0049] The telescopic component 3 includes a mounting groove 2 31 symmetrically opened on the surface of the base 1, a slide groove 2 32 is opened inside the base 1, and the mounting groove 2 31 is connected to the slide groove 2 32, and a connecting block 1 33 and a connecting block 2 34 are symmetrically provided on the upper surface of the base 1, the connecting block 2 34 is fixedly connected to the base 1 through the mounting groove 2 31, the connecting block 1 33 is slidingly connected to the base 1 through the mounting groove 2 31, a push rod 35 is provided on the inner side of the slide groove 2 32, and the push rod 35 is fixedly connected to the connecting block 1 33, a cylinder 36 is installed on the side of the base 1 close to the connecting block 1 33, a push rod 37 is provided on the side of the cylinder 36 close to the base 1, the cylinder 36 is slidingly connected to the push rod 37, and a telescopic bracket 39 is provided on the surfaces of the connecting block 1 33 and the connecting block 2 34.

[0050] In this embodiment, the air cylinder 36 is started to push the push rod 37 out of the cylinder 36, and the push rod 37 pushes the push rod 35 to move forward. The push rod 35 makes a linear motion along the second slide groove 32. The movement of the push rod 35 drives the connecting block 1 33 fixed on the push rod 35 to move. The connecting block 1 33 makes a linear motion along the second installation groove 31. The connecting block 2 34 is fixedly connected to the base 1. Therefore, when the connecting block 1 33 moves, the connecting block 1 33 and the connecting block 2 34 indirectly move relative to each other or move away from each other.

[0051] Going further:

[0052] In an optional embodiment, the lower surface of the top plate 26 is symmetrically provided with a mounting groove three 310, the inner surface of the mounting groove three 310 is provided with a connecting block three 311, the bottom end of the connecting block three 311 is fixedly connected to the limiting block 314, the top plate 26 is provided with a limiting groove 313 matching the limiting block 314 through the mounting groove three 310, the connecting block three 311 is slidingly connected to the top plate 26, and the end of the top plate 26 away from the connecting block three 311 is symmetrically provided with a connecting block four 312, the connecting block four 312 is fixedly connected to the top plate 26, and the surfaces of the connecting block three 311 and the connecting block four 312 are provided with a telescopic bracket 39.

[0053] In this embodiment, the connecting block three 311 makes a linear motion in the slide groove one 218 through the slider 217, and the connecting block four 312 is fixedly connected to the surface of the top plate 26. Therefore, when the connecting block three 311 moves, the connecting block three 311 and the connecting block four 312 indirectly move relative to each other or move away from each other.

[0054] Going further:

[0055] In an optional embodiment, the telescopic bracket 39 includes a plurality of left support plates 315, right support plates 316 and fixed rods 317. The middle ends of each left support plate 315 and each right support plate 316 are hinged to each other, and both ends of each left support plate 315 are hinged to the right support plate 316, and both ends of each right support plate 316 are hinged to the left support plate 315. A fixed rod 317 is fixedly connected between the hinge points of each left support plate 315 and the right support plate 316 symmetrically arranged at one end away from the cylinder 36. The bottom end of the telescopic bracket 39 is hinged to the connecting block 1 33 and the connecting block 2 34 respectively, and the top end of the telescopic bracket 39 is hinged to the connecting block 311 and the connecting block 4 312 respectively.

[0056] In this embodiment, when the connecting block 1 33 and the connecting block 2 34 move relative to each other or move away from each other, the left support plate 315 and the right support plate 316 hinged on the connecting block 1 33 and the connecting block 2 34 can be driven to move relative to each other or move away from each other. Because the middle ends of the left support plate 315 and the right support plate 316 intersect with each other, the angle between the left support plate 315 and the right support plate 316 becomes smaller when the left support plate 315 and the right support plate 316 approach each other, and the longitudinal height of the left support plate 315 and the right support plate 316 becomes higher. Both ends of each left support plate 315 are hinged to the right support plate 316, and both ends of each right support plate 316 are hinged to the left support plate 315. The angle between each left support plate 315 and the right support plate 316 becomes smaller. When the transmission reaches the top of the telescopic bracket 39, it drives the connecting block 311 to slide. When the telescopic bracket 39 moves, the fixed rod 317 fixed therebetween can make the movement of the telescopic bracket 39 smoother and more stable.

[0057] Working principle: Push the push handle 21 to push the device to the required position through the universal wheel 22, then start the fan 23, and the wind flows into the wind nozzle 25 through the bellows 24. The back of the wind nozzle 25 is fixedly connected with a threaded block 29. Turn on the servo motor 210 fixed on the surface of the top plate 26. The servo motor 210 drives the threaded rod 28 to rotate, and the threaded rod 28 drives the threaded block 29 to move left and right on the threaded rod 28, thereby driving the wind nozzle 25 to move left and right. The wind nozzle 25 can be moved to the required position according to the needs of the staff. The wind is transported to the wind nozzle 25 through the circular groove 212, and the wind passes through the air inlet 211 to the air outlet 213, and passes through the backward curved impeller 215 in the middle. The backward curved impeller 215 is fixedly connected to the rotating rod 214. Start the servo motor 210. The servo motor 216 rotates the rotating rod 214, thereby rotating the backward curved impeller 215, which can make the wind force of the exhaust port 213 greater. The rotation speed of the servo motor 216 can be controlled to control the rotation speed of the backward curved impeller 215. At the same time, the wind force of the air nozzle 25 can be controlled by adjusting the rotation speed of the servo motor 216. When the air nozzle 25 moves left and right, the position of the air nozzle 25 is fixed by the slider 217, and the sliding path of the air nozzle 25 is limited by the slide groove 218, so that the air nozzle 25 can play a fixing and limiting role. The fan 23 conveys the wind to the bellows 24, and the bellows 24 conveys the wind to the air nozzle 25 through the circular groove 212, so that the air nozzle 25 can convey the wind to the position where air is needed when the sheet materials are stacked. When the push rod 35 is in the state of being moved, the air cylinder 36 is started to push the push rod 37 out of the cylinder 36. The push rod 37 pushes the push rod 35 to move forward. The push rod 35 makes a linear motion along the second slide groove 32. The movement of the push rod 35 drives the connecting block 1 33 fixed on the push rod 35 to move. The connecting block 1 33 makes a linear motion along the second mounting groove 31. The connecting block 2 34 is fixedly connected to the base 1. Therefore, when the connecting block 1 33 moves, the connecting block 1 33 and the connecting block 2 34 move indirectly relative to each other or move away from each other. The connecting block 311 makes a linear motion in the first slide groove 218 through the slider 217. The connecting block 4 312 is fixedly connected to the surface of the top plate 26. Therefore, when the connecting block 311 moves, the connecting block 311 and the connecting block 4 312 move indirectly relative to each other or move away from each other. When the first 33 and the second connecting block 34 move relative to each other or move away from each other, the left supporting plate 315 and the right supporting plate 316 hinged on the first connecting block 33 and the second connecting block 34 can be driven to move relative to each other or move away from each other. Because the middle ends of the left supporting plate 315 and the right supporting plate 316 intersect with each other, when the left supporting plate 315 and the right supporting plate 316 approach each other, the angle between the left supporting plate 315 and the right supporting plate 316 becomes smaller, and the longitudinal height of the left supporting plate 315 and the right supporting plate 316 becomes higher. Both ends of each left supporting plate 315 are hinged to the right supporting plate 316, and both ends of each right supporting plate 316 are hinged to the left supporting plate 315. The angle between each left supporting plate 315 and the right supporting plate 316 becomes smaller, and when the transmission reaches the top of the telescopic bracket 39, it drives the third connecting block 311 to slide.When the telescopic bracket 39 moves, the fixed rod 317 fixed therebetween can make the movement of the telescopic bracket 39 smoother and more stable, thereby realizing the conversion of the horizontal height of the telescopic bracket 39 into the vertical height. This design can adjust the height of the blowing device, which can make it more convenient and practical for the staff during use.

[0058] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A blowing device for a sheet material stacker, comprising a base (1), characterized in that: It also includes a mobile blowing assembly (2) arranged on the surface of the base (1); The mobile blowing assembly (2) comprises a push handle (21) symmetrically arranged on one side of the base (1), the push handle (21) is fixedly connected to the base (1), a universal wheel (22) is fixedly connected to the lower surface of the base (1), a fan (23) is installed on the surface of the base (1), a bellows (24) is symmetrically installed on the surface of the fan (23), a nozzle (25) is provided at one end of the bellows (24) away from the fan (23), a top plate (26) is provided on the surface of the base (1), and a There is an air nozzle (25), the surface of the top plate (26) is provided with a mounting groove (27), the inner side of the mounting groove (27) is provided with a threaded rod (28), the threaded rod (28) is rotatably connected to the top plate (26), a servo motor (210) is provided on one side of the top plate (26), the output end of the servo motor (210) is fixedly connected to the threaded rod (28), the surface of the threaded rod (28) is threadedly connected with a threaded block (29), and the threaded block (29) is fixedly connected to the surface of the air nozzle (25).

2. The blowing device of the sheet material stacker according to claim 1, characterized in that: An air inlet (211) is provided at one end of the air nozzle (25) close to the threaded block (29), a circular groove (212) is symmetrically provided at one end of the air nozzle (25) close to the air inlet (211), an air outlet (213) is provided at one end of the air nozzle (25) away from the air inlet (211), a backward curved impeller (215) is provided on the inner surface of the air nozzle (25), a rotating rod (214) is rotatably connected to the inner surface of the air nozzle (25), a servo motor 2 (216) is provided on one side of the air nozzle (25) close to the servo motor 1 (210), an output end of the servo motor 2 (216) is fixedly connected to the rotating rod (214), and the rotating rod (214) is fixedly connected to the backward curved impeller (215).

3. The blowing device of the sheet material stacker according to claim 1, characterized in that: The surface of the air nozzle (25) is fixedly connected with a slider (217), and the surface of the top plate (26) is provided with a slide groove (218) that matches the slider (217), and the slider (217) is slidably connected with the slide groove (218).

4. The blowing device of the sheet material stacker according to claim 1, characterized in that: A circular groove (212) is symmetrically provided at the bottom end of the air nozzle (25), the bellows (24) is connected to the circular groove (212) by bolts, and the tail end of the bellows (24) is installed at the air outlet of the fan (23).

5. The blowing device of the sheet material stacker according to claim 1, characterized in that: It also includes a telescopic component (3) arranged on the surface of the base (1); The telescopic assembly (3) includes a second mounting groove (31) symmetrically provided on the surface of the base (1), a second slide groove (32) is provided inside the base (1), and the second mounting groove (31) is connected to the second slide groove (32), and a first connecting block (33) and a second connecting block (34) are symmetrically provided on the upper surface of the base (1), the second connecting block (34) is fixedly connected to the base (1) through the second mounting groove (31), and the first connecting block (33) is connected to the second connecting block (34) through the second mounting groove (31). The base (1) is slidably connected, a push rod (35) is provided on the inner side of the second slide groove (32), and the push rod (35) is fixedly connected to the first connecting block (33). A cylinder (36) is installed on the side of the base (1) close to the first connecting block (33), and a push rod (37) is provided on the side of the cylinder (36) close to the base (1). The cylinder (36) is slidably connected to the push rod (37), and telescopic brackets (39) are provided on the surfaces of the first connecting block (33) and the second connecting block (34).

6. The blowing device of the sheet material stacker according to claim 5, characterized in that: The lower surface of the top plate (26) is symmetrically provided with a mounting groove three (310), the inner surface of the mounting groove three (310) is provided with a connecting block three (311), the bottom end of the connecting block three (311) is fixedly connected to the limiting block (314), the top plate (26) is provided with a limiting groove (313) matching the limiting block (314) through the mounting groove three (310), the connecting block three (311) is slidably connected to the top plate (26), the end of the top plate (26) away from the connecting block three (311) is symmetrically provided with a connecting block four (312), the connecting block four (312) is fixedly connected to the top plate (26), and the surfaces of the connecting block three (311) and the connecting block four (312) are provided with the telescopic bracket (39).

7. The blowing device of the sheet material stacker according to claim 6, characterized in that: The telescopic bracket (39) includes a plurality of left support plates (315), right support plates (316) and fixed rods (317). The middle ends of each left support plate (315) and each right support plate (316) are hinged to each other, and both ends of each left support plate (315) are hinged to the right support plate (316). Both ends of each right support plate (316) are hinged to the left support plate (315). A fixed rod (317) is fixedly connected between the hinge points of each left support plate (315) and the right support plate (316) symmetrically arranged at one end away from the cylinder (36). The bottom end of the telescopic bracket (39) is hinged to the connecting block 1 (33) and the connecting block 2 (34) respectively, and the top end of the telescopic bracket (39) is hinged to the connecting block 3 (311) and the connecting block 4 (312) respectively.

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