Automatic cap screwing machine

Abstract

The application discloses a container plug and an automatic plug screwing machine, and relates to the technical field of container plugs, in particular to a container plug and an automatic plug screwing machine. The container plug comprises a cylindrical plug body provided with threads on the outer side of the bottom end, the bottom end of the plug is in an inverted conical shape, the threads are arranged on the outer side of the inverted conical shape, and a screwing groove is concavely arranged on the top end of the plug. The automatic plug screwing machine is used for screwing the plug onto the container, and comprises a rack provided with a container conveying area. The plug screwing assembly is arranged on the container conveying area of the rack and is used for screwing the plug into the valve seat hole of the container in the container conveying area. The container feeding assembly is arranged at the bottom of the container conveying area of the rack and is used for conveying and positioning the container below the plug screwing assembly. The plug feeding assembly is arranged on one side of the plug screwing assembly of the rack and is used for stacking and storing the plugs, turning the plugs one by one, and feeding the plugs into the plug screwing assembly. The container plug and the automatic plug screwing machine provided by the application realize automatic screwing of the plug and the container, and improve the production and assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of liquefied gas cylinder processing equipment technical field, especially the plug of container and automatic screwing plug machine. BACKGROUND

[0002] The existing liquefied gas cylinder and other containers need to be screwed into the plug at the valve seat hole after production welding, so as to follow the sand blasting and paint spraying process, and the current container production and processing industry adopts manual method to pick up T-shaped plug from the plug material frame and screw into the valve seat of container, unable to realize automatic feeding and screwing operation of plug, and the assembly efficiency is low and the labor intensity is high. SUMMARY

[0003] In view of the deficiencies of the prior art, the plug of container and automatic screwing plug machine are provided, which realizes automatic screwing of plug and container and improves production assembly efficiency.

[0004] The present application is to achieve the above purposes:

[0005] A kind of plug of container, including the plug body of cylindrical shape with thread on the outer side of bottom end, the bottom end of the plug is inverted conical, the thread is arranged on the outer side of inverted conical, the top end of the plug is concave with screwing groove.

[0006] An automatic screwing plug machine is used for screwing plug on container, including rack with container conveying area, further comprising:

[0007] Plug screwing assembly, including lifting assembly, bit screwing assembly, positioning clamping assembly and screwing bit, the bit screwing assembly is arranged on the container conveying area of rack by lifting assembly, the bottom of bit screwing assembly is connected with screwing bit matched with plug screwing groove through rotating shaft, and the positioning clamping assembly for aligning screwing bit of plug is further arranged on one side of bit screwing assembly;

[0008] Container feeding assembly, including container conveying belt and container positioning assembly, the container conveying belt is horizontally arranged on the bottom of container conveying area of rack and used for conveying container to the bottom of plug screwing assembly, and the container positioning assembly is arranged below the plug screwing assembly in container conveying area and used for aligning valve seat hole of container with screwing bit of plug screwing assembly above;

[0009] Plug feeding assembly is arranged on the rack and located on one side of plug screwing assembly, including feeding bin assembly, turnover assembly and translation feeding assembly, the feeding bin assembly is used for sending horizontal plug into turnover assembly, the turnover assembly is used for turning horizontal plug by 90 degrees, and the translation feeding assembly is used for sending turned plug into positioning clamping assembly.

[0010] Among them, the screwdriver bit tightening assembly includes a lifting platform that can be lifted and lowered on the lifting assembly. The tightening screwdriver bit passes through from top to bottom and is rotatably connected to the lifting platform. A tightening drive device is provided on the lifting platform. The bottom of the tightening drive device is provided with a shaft that is connected to the top of the tightening screwdriver bit and drives the tightening screwdriver bit to rotate.

[0011] Among them, the positioning clamping assembly includes a lifting cylinder, a slide rail II and a positioning clamping claw arranged on one side of the lifting platform. The output rod of the lifting cylinder is connected to the positioning clamping claw and drives the positioning clamping claw to rise and fall at the bottom of the lifting platform through the slide rail II.

[0012] Among them, the lifting assembly includes a lifting seat arranged on the frame, a lifting screw rod for lifting the screwdriver bit tightening assembly and slide rails I arranged on both sides of the lifting screw rod, and the lifting screw rod is connected to the lifting drive device.

[0013] Among them, the container positioning assembly includes a lifting assembly and a clamping assembly, the lifting assembly includes a lifting cylinder II arranged at the bottom of the container conveyor belt corresponding to the plug tightening assembly and a top plate connected to the top output rod of the lifting cylinder II; the clamping assembly includes a translation cylinder arranged on a side frame below the corresponding plug tightening assembly in the container conveying area and a clamping head connected to the output rod of the translation cylinder, and the output rod of the translation cylinder drives the clamping head to move back and forth to the other side of the container conveying area.

[0014] Among them, the feeding bin assembly includes a feeding bin arranged on the frame, and the feeding bin is "W"-shaped and divided into a hopper and a hopper II. A pushing trough is provided on the outer top of the hopper II, and a lifting block is provided in the hopper for pushing its inner plug to the hopper II, and the lifting block is driven by the lifting drive device II; a lifting block II is provided in the hopper II for pushing its inner plug to the pushing trough, and the lifting block II is driven by the lifting drive device III; a pushing slider is provided in the pushing trough for sliding along the trough, and the pushing trough is also provided with a translation drive device for driving the pushing slider to slide and push the plug in the pushing trough into the flipping assembly.

[0015] Among them, the flip assembly includes a flip seat, a flip shaft, a flip clamping claw and a telescopic drive mechanism. The flip seat is arranged on one side of the feed bin on the frame, and the flip shaft is rotatably arranged on the flip seat. The flip shaft has a flip clamping claw fixed at one end corresponding to the discharge end of the push trough, and a rotating arm is also fixed on the flip shaft. The end of the rotating arm is connected to the telescopic drive mechanism that drives the rotating arm to rotate 90° around the rotating axis; a guide support plate corresponding to the bottom of the push trough is also provided on one side of the flip clamping claw.

[0016] The flip seat is further provided with a baffle, which is arranged vertically on one side of the discharge end of the clamping claw and the guide support plate (1106).

[0017] Among them, the translation feeding assembly includes a translation clamping claw, a slide rail III and a translation drive device II. The slide rail III and the translation drive device II are arranged on the frame. The translation drive device II is connected to the translation clamping claw and drives the translation clamping claw to slide and translate along the slide rail III between the flipping assembly and the positioning clamping assembly.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention provides a cylindrical container plug that is smaller in size than the existing T-shaped plug, making it easier to stack and store, saving storage space. In addition, the plug has a tightening groove on the top, replacing the tightening handle of the existing T-shaped plug, facilitating the automatic tightening operation of the automatic tightening plug machine.

[0020] 2. During operation, the feeding bin assembly of the plug feeding assembly stacks a large number of plugs horizontally and pushes the plugs one by one to the flip assembly. The flip assembly clamps the horizontal plugs and flips them 90 degrees vertically for tightening. The translation feeding mechanism clamps the vertical plugs and translates them into the positioning clamping assembly of the plug tightening assembly. At the same time, the container conveyor belt in the container conveying area works to convey the container to the bottom of the plug tightening assembly. The container positioning assembly works to push the container so that the valve seat hole of the container is aligned with the tightening head and the plug of the positioning clamping assembly above. The descending assembly drives the tightening bit down, and the tightening bit engages with the tightening groove of the plug and drives the plug through the threaded tightening valve seat hole at its bottom. Through the cooperation of the above components, this equipment fully automatically completes the loading of the plug and the tightening process with the container valve seat hole. Only a few workers are required to batch feed the feed bin components, effectively improving production and processing efficiency and reducing the labor intensity of workers, so as to reduce the company's human resource cost expenditure. At the same time, it is safe and reliable, avoiding injuries to workers caused by the plug falling due to operational errors when manually tightening the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of the flip assembly of the present invention at one angle;

[0025] Figure 4 A schematic diagram of the three-dimensional structure of the flip assembly of the present invention from another angle;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the lifting assembly of the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the plug feeding assembly of the present invention.

[0028] In the above figure, 1. plug, 101. tightening groove, 2. rack, 201. container conveying area, 3. screwing assembly of the screwdriver bit, 301. lifting platform, 302. tightening the screwdriver bit, 3021. clamping block, 303. tightening drive device, 304. safety coupling, 4. lifting assembly, 401. lifting seat, 402. lifting screw, 403. slide rail I, 5. positioning clamping assembly, 501. lifting cylinder, 502. slide rail II, 503. positioning clamping claw, 6. guide sleeve, 7. Container conveyor belt, 8. Lifting assembly, 801. Lifting cylinder II, 802. Top plate, 9. Pressing assembly, 901. Translation cylinder, 902. Pressing head, 903. Wear-resistant rubber wheel, 905. Wear-resistant rubber plate, 10. Feed bin assembly, 1001. Bin, 1002. Bin II, 1003. Pushing chute, 1004. Ejecting block, 1005. Lifting drive unit II, 1006. Ejecting block II, 1007. Lifting drive Device III, 1008, pushing slider, 1009, translation drive device, 1010, sensor, 11, flip assembly, 1101, flip seat, 1102, flip axis, 1103, flip clamping claw, 1104, telescopic drive mechanism, 1105, rotating arm, 1106, guide support plate, 1107, guide ramp, 1108, baffle, 12, translation feeding assembly, 1201, translation clamping claw, 1202, slide rail III. DETAILED DESCRIPTION

[0029] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0030] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0031] In the description of this patent, it should be noted that, unless otherwise specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, they can understand the specific meanings of the above terms in this patent according to specific circumstances.

[0032] like Figure 1 and Figure 2 As shown, a container plug includes a cylindrical plug body 1 with threads on the outside of the bottom end. The bottom end of the plug 1 is inverted conical, and the threads are provided on the outside of the inverted cone. The top of the plug 1 is recessed with a tightening groove 101. The present invention provides a cylindrical container plug 1 that is smaller than existing T-shaped plugs, making it easier to stack and store, saving storage space. The tightening groove 101 provided on the top of the plug 1 replaces the tightening handle of existing T-shaped plugs, facilitating the automatic tightening operation of an automatic plug tightening machine.

[0033] An automatic plug tightening machine for tightening a plug 1 on a container, comprising a frame 2 provided with a container conveying area 201, and further comprising:

[0034] The plug tightening assembly includes a lifting assembly 4, a screwdriver bit tightening assembly 3, a positioning clamping assembly 5 and a tightening bit 302. The screwdriver bit tightening assembly 3 is lifted and lowered on the container conveying area 201 of the frame 2 by the lifting assembly 4. The bottom of the screwdriver bit tightening assembly 3 is connected to the tightening bit 302 matching the tightening groove 101 of the plug 1 through a rotating shaft. A positioning clamping assembly 5 is also provided on one side of the screwdriver bit tightening assembly 3 for aligning the plug 1 with the tightening bit 302.

[0035] The container feeding assembly includes a container conveyor belt 7 and a container positioning assembly. The container conveyor belt 7 is horizontally arranged at the bottom of the container conveying area 201 of the frame 2 and is used to convey the container to the bottom of the plug tightening assembly. The container positioning assembly is arranged in the container conveying area 201 below the corresponding plug tightening assembly and is used to align the valve seat hole of the container with the tightening bit 302 of the plug tightening assembly above.

[0036] The plug feeding assembly is provided on the frame 2 and is located on one side of the plug tightening assembly. It includes a feeding bin assembly 10, a flipping assembly 11 and a translation feeding assembly. The feeding bin assembly 10 is used to feed the horizontally placed plug 1 into the flipping assembly 11. The flipping assembly 11 is used to flip the horizontally placed plug 190°. The translation feeding assembly is used to feed the flipped plug 1 into the positioning clamping assembly 5. During operation, the feeding bin assembly 10 of the plug feeding assembly stacks and stores a large number of plugs 1 horizontally and pushes the plugs 1 one by one to the flip assembly 11. The flip assembly 11 clamps the horizontal plug 1 and flips it 90 degrees vertically for tightening. The translation feeding mechanism clamps the vertical plug 1 and translates it into the positioning clamping assembly 5 of the plug tightening assembly. At the same time, the container conveyor belt 7 in the container conveying area 201 works to convey the container to the bottom of the plug tightening assembly. The container positioning assembly works to push the container so that the valve seat hole of the container is aligned with the tightening batch head 302 above and the plug 1 of the positioning clamping assembly 5. The lifting assembly 4 drives the rotary The tightening screwdriver head 302 descends, and the tightening screwdriver head 302 tightens the tightening groove 101 of the plug 1 through the block 3021 protruding from the bottom thereof and drives the plug 1 to tighten the valve seat hole through the thread at its bottom. The equipment fully automatically completes the loading of the plug 1 and the tightening process with the container valve seat hole through the cooperation of the above components. Only a small number of workers are required to batch feed the feed bin component 10, effectively improving production and processing efficiency and reducing the labor intensity of workers, so as to reduce the company's human resource cost expenditure. At the same time, it is safe and reliable, avoiding injuries to workers caused by the plug 1 falling due to operational errors when manually tightening the plug 1.

[0037] like Figure 1 and Figure 2 As shown, in order to enhance the stability of the tightening bit 302 when it is rotated and tightened, the bit tightening assembly 3 includes a lifting platform 301 which can be lifted and lowered on the lifting assembly 4. The tightening bit 302 passes through from top to bottom and is rotatably connected to the lifting platform 301 through bearings provided at the top and bottom of the lifting platform 301. A tightening drive device 303 is provided on the lifting platform 301. The bottom of the tightening drive device 303 is provided with a shaft connected to the top of the tightening bit 302 and drives the tightening bit 302 to rotate. At the same time, in order to avoid excessive torque of the shaft from causing the plug 1 to slip between the valve seat hole through the tightening bit 302, the shaft is connected to the top shaft of the tightening bit 302 through a safety coupling 304.

[0038] like Figure 1As shown, in order to make the plug 1 match and engage with the screw bit 302 before the lifting assembly 4 works and descends, and to increase the engaging speed of the plug 1 and the screw bit 302, the positioning and clamping assembly 5 includes a lifting cylinder 501, a slide rail II502 and a positioning and clamping claw 503 arranged on one side of the lifting platform 301, and the output rod of the lifting cylinder 501 is connected to the positioning and clamping claw 503 and drives the positioning and clamping claw 503 to rise and fall at the bottom of the lifting platform 301 through the slide rail II502 and clamp the vertical plug 1 to a height that matches and engages with the screw bit 302.

[0039] like Figure 2 As shown, in order to quickly align the tightening groove 101 at the top of the plug 1 with the block 3021 at the bottom of the tightening bit 302, a guide sleeve 6 is further provided. The top of the guide sleeve 6 is tightly fitted onto the outer surface of the bottom of the tightening bit 302. The inner chamfer of the bottom of the guide sleeve 6 has an annular guide slope that facilitates the top of the plug 1 to align and sink into the guide sleeve 6.

[0040] like Figure 1 As shown, the components on the lifting seat 401 of the present invention that drive the screwdriver bit tightening assembly 3 to rise and fall can be realized in a variety of ways, including cylinder push rods, hydraulic push rods, gear rack mechanisms, etc. to achieve lifting, but the above devices either cannot accurately control the lifting distance and fail to meet the requirements, or the structure is bloated and complicated and the manufacturing cost is high. The lifting assembly 4 includes a lifting seat 401 arranged on the frame 2, a lifting screw 402 for lifting the screwdriver bit tightening assembly 3 and a slide rail I403 arranged on both sides of the lifting screw 402 on the lifting seat 401. The lifting screw 402 is connected to the lifting drive device. The lifting screw 402 cooperates with the slide rail I403 to lift the screwdriver bit tightening assembly 3 steadily and accurately with distance control, and the volume structure is moderate, which effectively reduces the production and manufacturing cost.

[0041] like Figure 1 and Figure 5As shown, in order to enable the valve seat hole of the container to quickly align with the plug 1 of the plug tightening assembly above the container conveyor belt 7 when the plug 1 is tightened, the lifting assembly 8 includes a lifting cylinder II801 provided at the bottom of the container conveyor belt 7 corresponding to the plug tightening assembly and a top plate 802 lifted and connected to the output rod at the top of the lifting cylinder II801. When the lifting cylinder II801 is working, the top plate 802 on the top of its output rod is lifted to a level higher than the top surface of the container conveyor belt 7, and the container is separated from the top surface of the container conveyor belt 7, reducing the wear of the conveyor belt when the container is tightened. In the embodiment of the present invention, in order to enable the top plate 802 to lift the container smoothly, the lifting cylinder II801 is driven along the conveyor belt to move forward and backward. There are at least two feeding directions; the clamping assembly 9 includes a translation cylinder 901 on the side frame 2 below the corresponding plug tightening assembly of the container conveying area 201 and a clamping head 902 connected to the output rod of the translation cylinder 901. The output rod drives the clamping head 902 to reciprocate toward the other side of the container conveying area 201. Wear-resistant rubber wheels 903 are hinged on both sides of the clamping end of the clamping head 902. A wear-resistant rubber plate 905 is also provided on the clamping head 902 frame 2 on the other side of the container conveying area 201. The cooperation of the wear-resistant rubber wheel 903 and the wear-resistant rubber plate 905 enables the clamping head 902 to be driven to push the container for alignment and positioning, so that the container can be quickly aligned and the wear of the container frame 2 caused by the long-term pushing action can be reduced.

[0042] like Figure 1 and Figure 6As shown, the number of plugs 1 stacked horizontally in the feed bin assembly 10 is large and heavy. The conventional clamping device is used to clamp the feed structure to the flip assembly 11, which is complicated and bloated, and the cost is high. The feed bin assembly 10 of the present invention includes a feed bin arranged on the frame 2. The feed bin is "W" shaped and divided into a bin 1001 and a bin II 1002. The capacity of the bin 1001 is greater than that of the bin II 1002. A large number of plugs 1 are stacked horizontally in the bin 1001. A pushing groove 1003 is provided on the outer top of the silo II1002, and a lifting block 1004 is provided in the silo 1001 to push the plug 1 inside the silo to the silo II1002. The lifting block 1004 is driven by the lifting drive device II1005 to push multiple plugs 1 to the top of the silo 1001 on one side of the silo II1002 and fall into the silo II1002. Multiple plugs 1 roll down in sequence along the inclined surface inside the silo II1002. The material silo II1002 is provided with a lifting block II1006 for pushing the plug 1 inside to the pushing trough 1003. The lifting block II1006 is driven by the lifting drive device III1007 to push the plugs 1 arranged in sequence along the inclined surface of the material silo II1002 one by one to the outer top of the material silo II1002 and drop them into the pushing trough 1003. At the same time, a connecting lifting device is provided on the top of the inner inclined surface of the material silo II1002. The sensor 1010 of the lowering drive device II1005, when detecting that there is no plug 1 at the top of the inner inclined surface of the hopper II1002, drives the lifting drive device II1005 to replenish the hopper II1002 with materials; a pushing slider 1008 is provided in the pushing trough 1003 to slide along the trough, and the pushing trough 1003 is also provided with a translation drive device 1009 that drives the pushing slider 1008 to slide and push the plug 1 in the pushing trough 1003 to enter the flipping assembly 11.

[0043] like Figure 3 and Figure 4As shown, the flip assembly 11 includes a flip seat 1101, a flip shaft 1102, a flip clamping claw 1103 and a telescopic drive mechanism 1104. The flip seat 1101 is arranged on one side of the feeding bin on the frame 2, and the flip shaft 1102 is rotatably arranged on the flip seat 1101. The flip shaft 1102 is fixed with a flip clamping claw 1103 at one end corresponding to the discharge end of the push trough. A rotating arm 1105 is also fixed on the flip shaft 1102. The end of the rotating arm 1105 is connected to the telescopic drive mechanism 1104 that drives the rotating arm 1105 to rotate 90 degrees around the rotating axis, wherein the telescopic drive mechanism 1104 can be a cylinder or a hydraulic cylinder. Etc., the telescopic driving mechanism 1104 drives the rotating arm 1105 to rotate 90° and at the same time drives the flip axis 1102 where the corresponding rotating arm 1105 is located to rotate, thereby driving the flip clamping claw 1103 to flip 90°; one side of the flip clamping claw 1103 is also provided with a guide support plate 1106 corresponding to the bottom of the pushing trough 1003, and the feeding end of the guide support plate 1106 is provided with a guide slope 1107 facing downward. When the pushing trough 1003 pushes out the plug 1, the bottom of the plug 1 is introduced along the guide slope 1107 and supported on the guide support plate 1106, which is convenient for the flip clamping claw 1103 to clamp and prevent the plug 1 from falling due to its own weight.

[0044] like Figure 3 and Figure 4 As shown, in order to facilitate the control of the distance that the plug 1 is pushed, a baffle 1108 is also provided on the flip seat 1101. The baffle 1108 is vertically arranged on one side of the discharge end of the clamping claw and the guide support plate 1106. When the plug 1 is pushed and falls onto the guide support plate 1106 and the flip clamping claw 1103, the bottom of the plug 1 contacts the baffle 1108 and stops pushing, so that the flip clamping claw 1103 clamps the same position of the plug 1, which is convenient for the subsequent process of the plug 1 on this equipment.

[0045] like Figure 1 As shown, in order to enable the plug 1 after the flipping assembly 11 is flipped over to be quickly clamped and translated into the positioning clamping assembly 5, the translation feeding assembly includes a translation clamping claw 1201, a slide rail III1202 and a translation drive device II, the slide rail III1202 and the translation drive device II are arranged on the frame 2, and the translation drive device II is connected to the translation clamping claw 1201 and drives the translation clamping claw 1201 to slide and translate along the slide rail III1202 between the flipping assembly 11 and the positioning clamping assembly 5.

Claims

1. An automatic plug tightening machine for tightening a plug on a container, wherein the plug of the container comprises a cylindrical plug (1) body having a thread on the outer side of the bottom end, the bottom end of the plug (1) is in an inverted cone shape, the thread is arranged on the outer side of the inverted cone, and the top end of the plug (1) is concavely provided with a tightening groove (101), the automatic plug tightening machine comprises a frame (2) provided with a container conveying area (201), and is characterized in that: Also includes: A plug tightening assembly, comprising a lifting assembly (4), a screwdriver bit tightening assembly (3), a positioning clamping assembly (5) and a screwdriver bit (302); the screwdriver bit tightening assembly (3) is lifted and lowered on the container conveying area (201) of the frame (2) by the lifting assembly (4); a screwdriver bit (302) matching the screwing groove (101) of the plug (1) is connected to the bottom of the screwdriver bit tightening assembly (3) via a rotating shaft; a positioning clamping assembly (5) for aligning the plug (1) with the screwdriver bit (302) is further provided on one side of the screwdriver bit tightening assembly (3); The screwdriver bit tightening assembly (3) comprises a lifting platform (301) which is liftable and arranged on the lifting assembly (4); the screwdriver bit (302) passes through the lifting platform (301) from top to bottom and is rotatably connected to the lifting platform (301); a screwdriver drive device (303) is provided on the lifting platform (301); a shaft is provided at the bottom of the screwdriver drive device (303) which is connected to the top of the screwdriver bit (302) and drives the screwdriver bit (302) to rotate; A container feeding assembly, comprising a container conveyor belt (7) and a container positioning assembly, wherein the container conveyor belt (7) is arranged horizontally at the bottom of the container conveying area (201) of the frame (2) and is used to convey the container to the bottom of the plug tightening assembly, and the container positioning assembly is arranged below the corresponding plug tightening assembly in the container conveying area (201) and is used to align the valve seat hole of the container with the tightening bit (302) of the upper plug tightening assembly; The plug feeding assembly is arranged on the frame (2) and is located on one side of the plug tightening assembly, and comprises a feeding bin assembly (10), a flipping assembly (11) and a translation feeding assembly, wherein the feeding bin assembly (10) is used to feed the horizontal plug (1) into the flipping assembly (11), the flipping assembly (11) is used to flip the horizontal plug (1) 90 degrees, and the translation feeding assembly is used to feed the flipped plug (1) into the positioning clamping assembly (5); The positioning clamping assembly (5) comprises a lifting cylinder (501) provided on one side of the lifting platform (301), a slide rail II (502), and a positioning clamping claw (503) provided at the bottom of the lifting platform (301); an output rod of the lifting cylinder (501) is connected to the positioning clamping claw (503) and drives the positioning clamping claw (503) to rise and fall at the bottom of the lifting platform (301) via the slide rail II (502); The lifting assembly (4) comprises a lifting seat (401) provided on the frame (2), a lifting screw (402) provided on the lifting seat (401) for lifting the screwdriver bit tightening assembly (3), and slide rails I (403) provided on both sides of the lifting screw (402), wherein the lifting screw (402) is connected to a lifting drive device.

2. The automatic plug tightening machine according to claim 1, characterized in that: The container positioning assembly includes a lifting assembly (8) and a pressing assembly (9), wherein the lifting assembly (8) includes a lifting cylinder II (801) provided at the bottom of the container conveyor belt (7) corresponding to the plug tightening assembly and a top plate (802) connected to the top output rod of the lifting cylinder II (801); the pressing assembly (9) includes a translation cylinder (901) provided on a side frame (2) below the corresponding plug tightening assembly of the container conveying area (201) and a pressing head (902) connected to the translation cylinder output rod, wherein the translation cylinder output rod drives the pressing head (902) to reciprocate and translate toward the other side of the container conveying area (201).

3. The automatic plug tightening machine according to claim 1, characterized in that: The feed bin assembly (10) comprises a feed bin arranged on a frame (2), the feed bin being W-shaped and divided into a bin (1001) and a bin II (1002), a pushing groove (1003) being provided on the top of the outer side of the bin II (1002), a lifting block (1004) for lifting the plug (1) inside the bin (1001) to the bin II (1002), the lifting block (1004) being driven by a lifting drive device II (1005); the bin II (100 2) The internal lifting device is provided with a material pushing block II (1006) for pushing the internal plug (1) to the material pushing groove (1003), and the material pushing block II (1006) is lifted and driven by a lifting drive device III (1007); a material pushing slider (1008) is provided in the material pushing groove (1003) for sliding along the groove direction, and the material pushing groove (1003) is also provided with a translation drive device (1009) for driving the material pushing slider (1008) to slide and push the internal plug (1) of the material pushing groove (1003) into the turning assembly (11).

4. The automatic plug tightening machine according to claim 3, characterized in that: The flip assembly (11) comprises a flip seat (1101), a flip shaft (1102), a flip clamping claw (1103) and a telescopic drive mechanism (1104). The flip seat (1101) is arranged on one side of the feeding bin on the frame (2). The flip shaft (1102) is rotatably arranged on the flip seat (1101). The flip clamping claw (1103) is fixed to one end of the flip shaft (1102) corresponding to the discharge end of the pushing trough. A rotating arm (1105) is also fixed to the flip shaft (1102). The end of the rotating arm (1105) is connected to the telescopic drive mechanism (1104) that drives the rotating arm (1105) to rotate 90 degrees around the rotating shaft. A guide support plate (1106) corresponding to the bottom of the pushing trough (1003) is also provided on one side of the flip clamping claw (1103).

5. The automatic plug tightening machine according to claim 4, characterized in that: The flip seat (1101) is further provided with a baffle (1108), and the baffle (1108) is vertically arranged on one side of the discharge end of the clamping claw and the guide support plate (1106).

6. The automatic plug tightening machine according to claim 1, characterized in that: The translation feeding assembly comprises a translation clamping claw (1201), a slide rail III (1202) and a translation driving device II. The slide rail III (1202) and the translation driving device II are arranged on the frame (2). The translation driving device II is connected to the translation clamping claw (1201) and drives the translation clamping claw (1201) to slide and translate along the slide rail III (1202) between the flipping assembly (11) and the positioning clamping assembly (5).

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