CN206343851U - With leakproof suction screw feeding device - Google Patents

Abstract

The utility model discloses a leak-proof suction screw feeding device, which comprises an adjustable screw vibration discharge mechanism for vibrating and sorting messy screws, a screw suction and transfer mechanism for sucking and transferring the sorted screws and A leak-proof detection component used to detect whether the screw is leaking. The adjustable screw vibration discharge mechanism includes a base, an adjustment screw, a vibrating plate, a trough, a feeding frame, a positioning block and a first cylinder. The material frame is threaded; the screw suction and transfer mechanism includes a ㄇ-shaped frame, a sliding seat, a driver, a plurality of vacuum suction rods and a second cylinder, and each second cylinder drives a corresponding vacuum suction rod to suck a screw in the positioning gap, and the driver The sliding seat drives all the screws at the vacuum suction rod to transfer to the next position; the leak-proof detection component includes a generator and a receiver to realize automatic screw feeding, and has a leak-proof detection function.

Description

With leak-proof suction screw feeding device

technical field

The utility model relates to a feeding device, in particular to a leak-proof suction screw feeding device.

Background technique

With the continuous development of the economy and the continuous progress of the society, people's lives are provided with very rich material consumer goods, thereby improving people's living standards, and electronic products are one of many material consumer goods.

Among them, in the production of electronic products such as mobile phones, tablet computers, personal digital assistants, MP3 and MP4, it is usually necessary to produce sheet metal parts as small sheet-shaped workpieces such as mounting plates and frames. These workpieces are generally used as the main frame for installation. During the entire assembly process of electronic products, nuts are first pressed into the mounting holes of the workpiece. During later assembly, other components can be directly fixed on the workpiece with screws, which is convenient for later assembly. .

At present, in the existing pressing nut mold, the part of loading the nuts in the mounting holes of the workpiece is completed by the workers, that is, the workers put the nuts into the workpiece one by one, and rely on the workers to install the nuts on the workpiece, which cannot be realized. The efficiency of production automation is still very low, which cannot meet the needs of production, and at the same time, increases the burden on workers.

Although there have been nut feeders on the market that can automatically load nuts into the mounting holes of the workpiece, in the existing nut feeders, the nut vibration discharge mechanism is not adjustable and can only be used for Nuts of one size and specification are sorted and loaded, so the scope of application is small and the versatility is poor; at the same time, it is impossible to find out whether there is suction leakage, and it is impossible to absorb multiple nuts at a time and install the nuts in different mounting holes of the workpiece.

Therefore, it is necessary to provide a leak-proof suction screw feeding device to overcome the above-mentioned defects.

Utility model content

The purpose of this utility model is to provide a leak-proof suction screw feeding device, which can sort and load screws of various sizes and specifications, so as to expand the scope of application and versatility, and can also prevent the occurrence of leak suction, and once Grab multiple screws and install the screws one by one at different mounting holes of the workpiece, thereby improving work efficiency and reducing the burden on workers.

In order to achieve the above object, the technical solution of the utility model is: provide a leak-proof suction screw feeding device, including an adjustable screw vibration discharge mechanism, a screw suction transfer mechanism and a vacuum suction rod for detecting whether A leak-proof detection component for leak-suction screws. The adjustable screw vibration discharge mechanism includes a base, an adjustment screw, a vibrating plate for sorting messy screws, and a vibrating plate for docking with the vibrating plate and for the sorted screws in the vibrating plate to be leveled one by one. The feeding trough for conveying, the feeding frame for docking with the feeding trough and having a docking outlet, the positioning block horizontally arranged at the feeding frame and docking with the docking outlet, and the positioning block installed on the feeding frame and drive the positioning notch in the positioning block to face or misplace the first cylinder of the docking outlet; the loading frame is slid on the base along the horizontal direction of the base, and the The sliding direction of the feeding frame is interlaced with the sliding direction of the positioning block, and the adjusting screw is rotatably placed on the base, and the adjusting screw is also arranged along the direction of the feeding frame. The sliding direction extends to the feeding frame and is screwed with the feeding frame. The screw suction transfer mechanism includes a ㄇ-shaped frame, a sliding seat, a driver, a plurality of vacuum suction rods and a second cylinder that is equal in number to the vacuum suction rods and assembled on the sliding seat; the ㄇ-shaped frame is horizontal Across the feeding frame, the sliding seat is slid on the top of the U-shaped frame along the front and rear direction of the U-shaped frame, and the driver is assembled on the U-shaped frame to drive the sliding seat to slide , the vacuum suction rods are arranged at intervals along the front and back direction of the ㄇ-shaped frame, and the vacuum suction rods are also slid on the slide seat along the up-down direction of the ㄇ-shaped frame, and each of the second cylinders is located at Above and connected to the corresponding one of the vacuum suction rods, each of the second cylinders drives the corresponding one of the vacuum suction rods to suck a screw in the positioning notch, and the driver passes through the The sliding seat drives all the screws at the vacuum suction rod to transfer to the next position. The leak detection component includes a generator installed on one side of the U-shaped frame and a receiver installed on the other side of the U-shaped frame.

Preferably, there are two vibrating plates, and each vibrating plate corresponds to one trough.

Preferably, the feeding frame includes a horizontal frame and a vertical frame, the horizontal frame is assembled at the top end of the vertical frame in a height-adjustable manner, and the bottom end of the vertical frame is slid on the base , the adjustment screw is screwed to the bottom end of the vertical frame, the positioning block is slidably arranged on the horizontal frame, the first cylinder is installed on the vertical frame, and the docking outlet is located on the horizontal frame. on the frame.

Preferably, the vertical frame is provided with an up and down adjustment slot arranged along the up and down direction of the base, an adjustment screw passes through the up and down adjustment slot and is screwed to the horizontal frame, and the adjustment screw selectively Prohibit or allow the height adjustment of the horizontal frame relative to the vertical frame.

Preferably, the bottom end of the vertical frame has a dovetail block, and the base correspondingly has a dovetail slot matched with the dovetail block.

Preferably, there is a sliding space in the horizontal frame for the sliding of the positioning block, and a concave space communicated with the sliding space is provided on the side of the top of the horizontal frame adjacent to the trough, so that The docking outlet is located at the bottom wall of the recessed space, the positioning block is placed at the sliding space and the recessed space, the bottom of the positioning notch is blocked by the bottom wall of the recessed space, and the first The output end of the cylinder protrudes into the sliding space and is fixedly connected with the positioning block.

Preferably, the sliding seat includes a horizontal seat plate and a vertical seat plate assembled on the left side of the horizontal seat plate, the second air cylinder is installed at the horizontal seat plate, and the vacuum suction rod slides On the vertical seat plate, the vertical seat plate is equipped with mounting blocks equal to the number of the vacuum suction rods, all the mounting blocks are arranged in rows along the front and back direction of the ㄇ-shaped frame, and each of the mounting blocks The vacuum suction rod slides through the corresponding one of the installation blocks along the up and down direction of the U-shaped frame.

Preferably, each of the vacuum suction rods is sheathed with an elastic member, and the elastic member abuts between the installation block and the vacuum suction rod.

Preferably, an intermediate transmission assembly is connected between the driver and the sliding seat, and the driver drives the sliding seat to slide through the intermediate transmission assembly.

Preferably, the driver is a motor, and the intermediate transmission assembly includes a screw rod installed on the top of the U-shaped frame along the front and rear direction of the U-shaped frame, and is slipped on the screw rod and connected with the The screw nut fixed to the sliding seat, the driven wheel installed on the screw mandrel, the driving wheel installed on the output end of the motor, and the transmission member wound around the driven wheel and the driving wheel.

Compared with the prior art, since the adjustable screw vibration discharge mechanism in the utility model also includes a base and an adjustment screw, the feeding frame is slid on the base along the horizontal direction of the base, and the sliding setting of the feeding frame The direction is interlaced with the sliding direction of the positioning block, and the adjusting screw is rotatably placed on the base, and the adjusting screw also extends to the feeding frame along the sliding direction of the feeding frame and is threadedly connected with the feeding frame. The operator can adjust the position of the feeding frame relative to the trough by adjusting the screw, so that the positioning block can match the feeding of screws of different sizes, thus expanding the application of the leakage-proof suction screw feeding device of the present invention. scope and versatility. And because the adjustable screw vibration discharge mechanism in the utility model can adjust the matching position of the feeding frame and the trough by adjusting the screw, and then ensure that the positioning block matches the screw in the vibrating tray, thus simplifying the structure of the utility model. The structure of the leak-proof suction screw feeding device reduces the cost of the leak-proof suction screw feeding device of the present invention. Because the screw suction and transfer mechanism in the utility model includes a ㄇ-shaped frame, a slide seat, a driver, a plurality of vacuum suction rods and the second cylinder that is equal to the number of vacuum suction rods and assembled on the slide seat, each second cylinder drives The corresponding vacuum suction rod absorbs a screw in the positioning gap, so it grabs multiple screws at a time; and the driver drives all the screws at the vacuum suction rod to the next position through the sliding seat, so as to realize grabbing multiple screws at one time and Transfer to the next position, and then under the action of each second cylinder, the screws can be installed in different mounting holes of the workpiece one by one, thereby improving work efficiency and reducing the burden on workers. With the help of leak-proof detection components, the occurrence of leakage in the vacuum suction rod is eliminated.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a leak-proof suction screw feeding device of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of the screw suction and transfer mechanism in the leak-proof suction screw feeding device shown in Fig. 1 .

Fig. 3 is a three-dimensional schematic diagram of the adjustable screw vibration discharge mechanism in the leak-proof suction screw feeding device shown in Fig. 1 .

Fig. 4 is a three-dimensional structural schematic diagram of the adjustable screw vibrating discharge mechanism shown in Fig. 3 after the vibrating tray and the trough are hidden.

detailed description

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Please refer to Fig. 1, the screw feeding device 100 with anti-leakage suction of the present utility model includes an adjustable screw vibration discharge mechanism 100, a screw suction transfer mechanism 200 and a device for detecting whether the vacuum suction rod 230 leaks and sucks the screw. Leak detection components.

3 and 4, the adjustable screw vibration discharge mechanism 100 includes a base 10, an adjustment screw 20, a vibrating plate 30 for sorting messy screws, and is used to dock with the vibrating plate 30 and supply the vibrating plate 30 The trough 40 that the sorted screws in the interior are transported horizontally one by one, the feeding frame 50 that is used to dock with the trough 40 and has a docking outlet 51, and the positioning that is horizontally arranged at the feeding frame 50 and docked with the docking outlet 51 The block 60 and the first air cylinder 70 that is installed on the material loading frame 50 and drives the positioning notch 61 in the positioning block 60 to be opposite to or misaligned with the docking outlet 51 . Specifically, in this embodiment, when the first cylinder 70 drives the positioning notch 61 in the positioning block 60 to face the docking outlet 51, so as to allow a screw in the docking outlet 51 to be transported to the positioning notch 61, it is a material loading process. Prepare; when the first cylinder 70 drives the positioning notch 61 in the positioning block 60 to misalign with the docking outlet 51, the screw in the positioning notch 61 will be conveyed downward to match the subsequent vacuum suction rod 230 to suck it, but not This is the limit. The feeding frame 50 blocks the bottom of the positioning notch 61, preventing the screws entering the positioning notch 61 from falling from the bottom; The direction is interlaced with the sliding direction of the positioning block 60, so that the loading frame 50 slides horizontally along the left-right direction in FIG. 3 , while the positioning block 60 slides horizontally along the front-back direction in FIG. 3 . The adjustment screw 20 is rotatably placed on the base 10 to allow the operator to rotate the adjustment screw 20; The material frame 50 is threaded, so that when the operator rotates and operates the adjustment screw 20, the threaded connection between the adjustment screw 20 and the material feeding frame 50 drives the sliding of the material feeding frame 50, thereby realizing the feeding frame 50 and the material feeding frame 50 The position of the positioning block 60 inside is adjusted relative to the trough 40 to match the requirements of screws of different sizes and specifications, and also to ensure the accuracy of the feeding position, but not limited thereto. Specifically, in this embodiment, there are two vibrating plates 30 , and each vibrating plate 30 corresponds to a trough 40 to improve work efficiency, but not limited thereto. For example, in this embodiment, the feeding frame 50 includes a horizontal frame 50a and a vertical frame 50b, the horizontal frame 50a is assembled at the top of the vertical frame 50b in a height-adjustable manner, and the bottom end of the vertical frame 50b is slidably arranged on the base On the seat 10, the adjusting screw 20 is threadedly connected with the bottom end of the vertical frame 50b, the positioning block 60 is slidably arranged on the horizontal frame 50a, the first cylinder 70 is installed on the vertical frame 50b, and the docking outlet 51 is located on the horizontal frame 50a to pass through The height adjustment of the transverse frame 50a relative to the opposite frame 50b can better match the positioning block 60 and the docking outlet 51 with the trough 40, thereby better ensuring the reliability of feeding, but not limited thereto. In order to simplify the structure of the height adjustment of the horizontal frame 50a relative to the frame 50b, the vertical frame 50b is provided with an up and down adjustment groove 52 arranged along the up and down direction of the base 10, and an adjustment screw 53 passes through the upper and lower adjustment groove 52 and then threaded with the horizontal frame 50a Connected, the adjusting screw 53 selectively prohibits or allows the height adjustment of the transverse frame 50a relative to the opposite frame 50b, so as to facilitate the operation of the operator by means of the adjusting screw 53, but not limited thereto. In order to make the upright frame 50b slide relative to the base 10 more stably and reliably, the bottom end of the upright frame 50b has a dovetail block 54 , and the base 10 has a dovetail slot 11 matching with the dovetail block 54 correspondingly. In order to make the layout of the positioning block 60 at the feeding frame 50 more compact and reasonable, there is a sliding space 55 for the positioning block 60 to slide in the horizontal frame 50a, and a side adjacent to the top of the horizontal frame 50a is provided with a The recessed space 56 connected to the sliding space 55, the docking outlet 51 is located at the bottom wall of the recessed space 56, the positioning block 60 is placed at the sliding space 55 and the recessed space 56, and the bottom of the positioning notch 61 is held by the bottom wall of the recessed space 56. Blocking, the output end of the first cylinder 70 extends into the sliding space 55 and is fixedly connected with the positioning block 60 .

Referring to FIGS. 1 to 2 , the screw suction and transfer mechanism 200 sucks the screws delivered by the adjustable screw vibrating discharge mechanism 100 and transfers them to the mounting holes of the workpiece 400 . Wherein, the screw suction transfer mechanism 200 includes a U-shaped frame 210, a sliding seat 220, a driver 260, a plurality of vacuum suction rods 230 and a second cylinder 240 that is equal in number to the vacuum suction rods 230 and assembled on the sliding seat 220 . For example, as shown in Figure 1 and Figure 2, in this embodiment, the number of vacuum suction rods 230 is four, of course, it is selected as three, five or six according to actual needs, but not in This is the limit. The ㄇ-shaped frame 210 straddles the feeding frame 50, and the sliding seat 220 is slid on the top of the ㄇ-shaped frame 210 along the front and rear direction of the ㄇ-shaped frame 210 (ie, the direction indicated by arrow A), so that the sliding seat 220 is positioned on the ㄇ-shaped frame 210 slide at the top of the top; specifically, as shown in Figures 1 and 2, in this embodiment, the sliding seat 220 includes a horizontal seat plate 221 and a vertical seat plate 222 assembled on the left side of the horizontal seat plate 221, which is The installation of external components provides installation space, but is not limited thereto. The driver 260 is assembled on the U-shaped frame 210 and drives the sliding seat 220 to slide, so as to provide power for the sliding of the sliding seat 220 . The vacuum suction rods 230 are arranged at intervals along the front and back direction of the U-shaped frame 210, and the vacuum suction rods 230 are also slid on the sliding seat 220 along the up-down direction of the U-shaped frame 210 (ie, the direction indicated by arrow B); specifically, in this embodiment In the example, since the sliding seat 220 includes a horizontal seat plate 221 and a vertical seat plate 222, the vacuum suction rod 230 is slid on the vertical seat plate 222, and the second cylinder 240 is installed on the horizontal seat plate 221, but not with This is the limit. And each second cylinder 240 is located above a corresponding vacuum suction rod 230 and is connected with the vacuum suction rod 230 , and each second cylinder 240 drives a corresponding vacuum suction rod 230 to absorb the positioning notch 61 of the positioning block 60 One screw, the driver 260 drives all the screws at the vacuum suction rod 230 to the next position through the sliding seat 220, and with the cooperation of the driver 260, each second cylinder 240 drives the corresponding screw at the vacuum suction rod 230. The screws are loaded into the mounting holes of the workpiece 400 to achieve batch suction and approval for installation. Specifically, in this embodiment, the vertical seat plate 222 is equipped with mounting blocks 223 equal in number to the vacuum suction rods 230, and all the mounting blocks 223 are arranged in rows along the front and rear direction of the U-shaped frame 210, and each vacuum suction rod 230 Slidingly inserted into a corresponding installation block 223 along the up and down direction of the U-shaped frame 210, to ensure that the vacuum suction rod 230 can slide up and down relative to the sliding seat 220 more reliably; preferably, each vacuum suction The rod 230 is provided with an elastic piece 224, the elastic piece 224 is between the mounting block 223 and the vacuum suction rod 230, and provides a buffering effect on the vacuum suction rod 230 when sucking the screw, so that the vacuum suction rod 230 can be more stable when sucking the screw. Stable and reliable, thereby improving the reliability of screw suction, but not limited thereto. For example, in this embodiment, the vacuum suction rod 230 is aligned with the output end of the second air cylinder 240 along the up and down direction of the U-shaped frame 210, so that the layout of the vacuum suction rod 230 and the second air cylinder 240 at the sliding seat 220 More compact, tighter and cleaner, but not limited to this. More specifically, an intermediate transmission assembly 250 is connected between the driver 260 and the sliding seat 220 , and the driver 260 drives the sliding seat 220 to slide through the intermediate transmission assembly 250 , so as to achieve the purpose of the driver 260 driving the sliding seat 220 to slide remotely. Specifically, in the present embodiment, the driver 260 is a motor, and the intermediate transmission assembly 250 includes a screw rod 251 installed on the top of the U-shaped frame 210 along the front-rear direction of the U-shaped frame 210, a sliding sleeve on the screw rod 251 and The screw nut 252 affixed to the sliding seat 220, the driven wheel 254 installed on the screw mandrel 251, the driving wheel 253 installed on the output end of the motor and the transmission parts (Fig. not shown); for example, in the present embodiment, the driving wheel 253 and the driven wheel 254 are a pulley, and the transmission part is a transmission belt, so as to further improve the stability and precision of the driver 260 driving the sliding seat 220 to slide; of course , In other embodiments, the driving wheel 253 and the driven wheel 254 are a sprocket, and the transmission member is a chain, so the above examples are not limited.

Referring to Fig. 1 and Fig. 2, the leak-proof detection assembly comprises the generator 310 installed on one side of the U-shaped frame 210 and the receiver 320 installed on the other side frame of the U-shaped frame 210, preferably , the generator 310 and the receiver 320 are optical fiber structures, but not limited thereto.

Compared with the prior art, since the adjustable screw vibration discharge mechanism 100 in the present invention also includes a base 10 and an adjustment screw 20, the feeding frame 50 is slid on the base 10 along the horizontal direction of the base 10, The sliding direction of the feeding frame 50 is interlaced with the sliding direction of the positioning block 60 , the adjusting screw 20 is rotatably inserted on the base 10 , and the adjusting screw 20 also extends along the sliding direction of the feeding frame 50 . To the feeding frame 50 and threaded with the feeding frame 50, so that the operator can adjust the position of the feeding frame 50 relative to the trough 40 by adjusting the screw 20, so that the positioning block 60 can match the feeding of screws of different sizes, Therefore, the scope of application and versatility of the leak-proof suction screw feeding device 1000 of the present invention are expanded. And because the adjustable screw vibration discharge mechanism 100 in the utility model can adjust the matching position of the feeding frame 50 and the trough 40 by adjusting the screw 20, and then ensure that the positioning block 60 matches the screw in the vibrating tray 30, Therefore, the structure of the leak-proof suction screw feeding device 1000 of the present utility model is simplified, and the 100 cost of the leak-proof suction screw feeding device of the present utility model is reduced. Because the screw suction and transfer mechanism 200 in the utility model includes a U-shaped frame 210, a slide seat 220, a driver 260, a plurality of vacuum suction rods 230 and a second cylinder that is equal in number to the vacuum suction rods 230 and assembled on the slide seat 220 240, each second cylinder 240 drives a corresponding vacuum suction rod 230 to suck a screw in the positioning gap 61, so a plurality of screws are grabbed at one time; and the driver 260 drives all the screws at the vacuum suction rod 230 through the slide seat 220 Transfer to the next position, realize grabbing multiple screws at one time and transfer to the next position, and then under the action of each second cylinder 240, realize installing each screw on different mounting holes of the workpiece 400, thereby improving work efficiency and reduce the burden on workers. With the aid of the leak-proof detection component, the vacuum suction rod 230 is prevented from leaking.

What is disclosed above is only the preferred embodiment of the utility model, and of course it cannot limit the scope of rights of the utility model. Therefore, equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (10)

1. A leak-proof suction screw feeding device, characterized in that it comprises: An adjustable screw vibration discharge mechanism, including a base, an adjustment screw, a vibrating plate for sorting messy screws, and a vibrating plate for docking with the vibrating plate and for the sorted screws in the vibrating plate to be leveled one by one The feeding trough for conveying, the feeding frame for docking with the feeding trough and having a docking outlet, the positioning block horizontally arranged at the feeding frame and docking with the docking outlet, and the positioning block installed on the feeding frame and drive the positioning notch in the positioning block to face or displace the first cylinder of the docking outlet, the feeding frame is slid on the base along the horizontal direction of the base, the The sliding direction of the feeding frame is interlaced with the sliding direction of the positioning block, and the adjusting screw is rotatably placed on the base, and the adjusting screw is also arranged along the direction of the feeding frame. The sliding direction extends to the feeding frame and is threadedly connected with the feeding frame; A screw suction and transfer mechanism, including a ㄇ-shaped frame, a sliding seat, a driver, a plurality of vacuum suction rods and a second air cylinder that is equal in number to the vacuum suction rods and assembled on the sliding seat, and the ㄇ-shaped frame is horizontal Across the feeding frame, the sliding seat is slid on the top of the U-shaped frame along the front and rear direction of the U-shaped frame, and the driver is assembled on the U-shaped frame to drive the sliding seat to slide , the vacuum suction rods are arranged at intervals along the front and back direction of the ㄇ-shaped frame, and the vacuum suction rods are also slid on the slide seat along the up-down direction of the ㄇ-shaped frame, and each of the second cylinders is located at Above and connected to the corresponding one of the vacuum suction rods, each of the second cylinders drives the corresponding one of the vacuum suction rods to suck a screw in the positioning notch, and the driver passes through the The sliding seat drives all the screws at the vacuum suction rod to transfer to the next position; and A leak-proof detection assembly for detecting whether the vacuum suction rod leaks suction screws, including a generator installed on one side of the U-shaped frame and a generator installed on the other side of the U-shaped frame. receiver. 2. The leak-proof suction screw feeding device according to claim 1, characterized in that there are two vibrating plates, and each vibrating plate corresponds to one of the material troughs. 3. The leak-proof suction screw feeding device according to claim 1, wherein the feeding frame includes a horizontal frame and a vertical frame, and the horizontal frame is assembled to the vertical frame in a height-adjustable manner At the top end of the vertical frame, the bottom end of the vertical frame is slidably set on the base, the adjustment screw is screwed to the bottom end of the vertical frame, the positioning block is slidable on the horizontal frame, the The first cylinder is installed on the vertical frame, and the docking outlet is located on the horizontal frame. 4. The leak-proof suction screw feeding device according to claim 3, characterized in that, the vertical frame is provided with an up and down adjustment groove arranged along the up and down direction of the base, and an adjustment screw passes through the The upper and lower adjustment slots are screwed to the horizontal frame, and the adjusting screw selectively prohibits or allows the height adjustment of the horizontal frame relative to the vertical frame. 5. The leak-proof suction screw feeding device according to claim 3, characterized in that, the bottom end of the vertical frame has a dovetail block, and the base has a dovetail corresponding to the dovetail block groove. 6. The leak-proof suction screw feeding device according to claim 3, characterized in that, there is a sliding space for the positioning block to slide in the horizontal frame, and the top of the horizontal frame is adjacent to the One side of the trough is provided with a recessed space communicating with the sliding space, the docking outlet is located at the bottom wall of the recessed space, the positioning block is placed at the sliding space and the recessed space, the The bottom of the positioning notch is blocked by the bottom wall of the recessed space, and the output end of the first cylinder extends into the sliding space and is fixedly connected with the positioning block. 7. The leak-proof suction screw feeding device according to claim 1, wherein the sliding seat comprises a horizontal seat plate and a vertical seat plate assembled on the left side of the horizontal seat plate, the The second cylinder is installed at the horizontal seat plate, the vacuum suction rod is slid on the vertical seat plate, and the vertical seat plate is equipped with mounting blocks equal in number to the vacuum suction rods. The installation blocks are arranged in a row along the front-rear direction of the U-shaped frame, and each of the vacuum suction rods is slidably inserted in a corresponding one of the installation blocks along the up-down direction of the U-shaped frame. 8. The leak-proof suction screw feeding device according to claim 7, characterized in that, each of the vacuum suction rods is covered with an elastic member, and the elastic member is against the mounting block and the Vacuum between the rods. 9. The leak-proof suction screw feeding device according to claim 1, characterized in that, an intermediate transmission assembly is connected between the driver and the sliding seat, and the driver drives the said intermediate transmission assembly through the intermediate transmission assembly. Sliders slide. 10. The leak-proof suction screw feeding device according to claim 9, characterized in that, the driver is a motor, and the intermediate transmission assembly is installed on the ㄇ-shaped frame along the front-to-back direction of the ㄇ-shaped frame. The screw rod at the top of the shape frame, the screw nut that slides on the screw rod and is fixedly connected with the sliding seat, the driven wheel installed on the screw rod, and the screw rod installed on the output end of the motor The driving wheel and the transmission part wound on the driven wheel and the driving wheel.