CN117185223A - Pressure-maintaining cap screwing head and pressure-maintaining cap screwing mechanism for material packaging - Google Patents
Pressure-maintaining cap screwing head and pressure-maintaining cap screwing mechanism for material packaging Download PDFInfo
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- CN117185223A CN117185223A CN202311469171.4A CN202311469171A CN117185223A CN 117185223 A CN117185223 A CN 117185223A CN 202311469171 A CN202311469171 A CN 202311469171A CN 117185223 A CN117185223 A CN 117185223A
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- cover
- pressure
- cap screwing
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 title claims abstract description 14
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000012937 correction Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000009924 canning Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The application discloses a pressure-maintaining cap screwing head and a pressure-maintaining cap screwing mechanism for material packaging, which relate to the technical field of cap screwing and comprise a pressure-maintaining cover, a rotating shaft, a cap screwing head and a pressure sensor, wherein the pressure-maintaining cover is provided with an inner cavity penetrating through the upper end and the lower end, the rotating shaft part penetrates into the pressure-maintaining cover from the top end of the pressure-maintaining cover and is in rotary sealing connection with the pressure-maintaining cover, the rotary sealing part is separated from a pressure-maintaining cavity positioned at the lower part of the inner cavity in the inner cavity, the cap screwing head is positioned in the pressure-maintaining cavity and is fixedly connected with the bottom end of the rotating shaft, the cavity wall of the pressure-maintaining cavity is provided with an air charging hole, and the pressure sensor can detect the air pressure in the pressure-maintaining cavity, so that the cap screwing head can perform pressure-maintaining cap screwing on a tank body, and gas leakage in the tank body in the cap screwing process is avoided.
Description
Technical Field
The application relates to the technical field of screw caps, in particular to a pressure-maintaining screw cap head and a pressure-maintaining screw cap mechanism for material packaging.
Background
With the development of industrial technology, the traditional chemical industry is developing to a higher degree of requirement, the semi-automatic production equipment in the conventional chemical industry is gradually replaced by full-automatic production equipment, and with the application of an automatic production line, the semi-automatic production equipment has the functions of tank filling of objects with different temperatures, normal-temperature canning and heat tracing canning. The normal temperature canning is adopted in the usual canning mode, the normal temperature canning operation is simple, the heat tracing canning difficulty is high, shrinkage of the material cooling package material after canning needs to be considered, at present, a charging pipe is filled with nitrogen gas firstly, the pot cover is screwed at a pot opening through a cover screwing mechanism after the charging is finished, however, nitrogen gas overflows from the pot opening in the process of screwing the pot cover, so that the air pressure in a subsequent pot cannot reach a preset value, and therefore automatic pressure-maintaining cover screwing equipment is urgently needed.
Disclosure of Invention
The application aims to provide a pressure-maintaining cap screwing head and a pressure-maintaining cap screwing mechanism, which solve the problem of insufficient air pressure in a later tank caused by overflow of nitrogen in the cap screwing process in the prior art.
The aim of the application can be achieved by the following technical scheme:
the utility model provides a pressurize spiral cover head, includes pressurize cover, pivot, spiral cover head and pressure sensor, the pressurize cover has the inner chamber of link up upper and lower end, pivot part follow the top of pressurize cover wears to establish into in the pressurize cover, with rotate and sealing connection through rotary seal spare between the pressurize cover, rotary seal spare is in separate out in the inner chamber and be located the pressurize chamber of inner chamber lower part, the spiral cover head is located the pressurize intracavity just with pivot bottom fixed connection, the inflation hole has been seted up on the chamber wall in pressurize chamber, pressure sensor can detect the atmospheric pressure in the pressurize chamber.
As a further scheme of the application: the rotary sealing piece comprises a first bearing and a rotary sealing ring which are arranged between the pressure maintaining cover and the rotating shaft at intervals, the first bearing is fixedly arranged in the pressure maintaining cover, and the rotating shaft is connected with the first bearing through a key and can axially move relative to the pressure maintaining cover; the rotary sealing ring comprises a shell ring fixedly arranged in the pressure maintaining cover, a first sealing ring for sealing the shell ring and the pressure maintaining cover, and a sealing ring for sealing the rotating shaft and the shell ring, wherein when the rotating shaft rotates relative to the pressure maintaining cover, the rotating shaft drives the sealing ring to rotate relative to the shell ring; when the rotating shaft axially moves relative to the pressure maintaining cover, the rotating shaft axially slides relative to the sealing ring.
As a further scheme of the application: the sealing ring comprises an annular main body and a plurality of ring skirts positioned in an inner ring of the annular main body, wherein the skirts are axially arranged at intervals along the annular main body and are tightly sleeved on the rotating shaft.
As a further scheme of the application: the key between the rotating shaft and the first bearing is a guide flat key or a spline.
As a further scheme of the application: the pressure maintaining cover is formed by splicing a metal part positioned at the upper part and a rubber part positioned at the lower part.
The pressure-maintaining cap screwing mechanism comprises the pressure-maintaining cap screwing head and further comprises:
the first lifting device is used for driving the pressure maintaining cover and the rotating shaft to synchronously move along the axial direction of the rotating shaft;
the second lifting device is used for driving the rotating shaft to axially move along the rotating shaft relative to the pressure maintaining cover;
the rotary driving device is used for driving the rotating shaft to rotate relative to the pressure maintaining cover.
As a further scheme of the application: the lifting device is characterized by further comprising a fixed bracket and a movable bracket, wherein the fixed bracket is connected with the movable bracket through the first lifting device; the top of the fixed bracket is provided with a first gear and a first motor, the first gear is rotationally connected to the fixed bracket, the first motor drives the first gear to rotate through a second gear, and the first gear, the second gear and the first motor jointly form the rotary driving device; the rotating shaft penetrates through the first gear, rotates synchronously with the first gear and can move relative to the first gear along the axial direction of the rotating shaft; the pressure maintaining cover is arranged on the movable support, a guide rod is fixedly arranged at the top of the movable support, and the second lifting device is fixedly arranged on the guide rod and is connected with the rotating shaft; the first lifting device can drive the movable support to move along the axial direction of the rotating shaft relative to the fixed support, so that the pressure maintaining cover and the rotating shaft move synchronously along with the movable support, and the second lifting device drives the rotating shaft to move along the axial direction of the pressure maintaining cover relative to the rotating shaft.
As a further scheme of the application: the movable support comprises an upper support plate and a lower support plate which are oppositely arranged, a correction hole is formed in the lower support plate, a correction seat is fixedly arranged at the top end of the pressure maintaining cover, the lower part of the correction seat is in clearance fit with the correction hole, the upper part of the correction seat is arranged between the upper support plate and the lower support plate, the upper part of the correction seat is connected with the upper support plate through an elastic piece, the rotating shaft comprises an upper shaft and a lower shaft, and the upper shaft is connected with the lower shaft through a universal joint.
As a further scheme of the application: the lower part of the deviation correcting seat is provided with an outer conical wall which is reduced downwards, the deviation correcting hole is a conical hole, and the outer conical wall is in clearance fit with the hole wall of the conical hole.
As a further scheme of the application: the movable end of the second lifting device is fixedly provided with a mounting plate, the top end of the rotating shaft is fixedly arranged on the mounting plate, a sliding sleeve which is in sliding fit with the guide rod is fixedly arranged on the mounting plate, and the axial direction of the guide rod is parallel to the axial direction of the rotating shaft.
The application has the beneficial effects that: according to the application, the pressure maintaining cover is arranged, so that the rotating shaft is in rotary sealing connection with the pressure maintaining cover through the rotary sealing piece, the rotating shaft can rotate and axially move relative to the pressure maintaining cover while a pressure maintaining cavity is formed in the pressure maintaining cover, and when the cap screwing operation is performed, the pressure maintaining cavity is communicated with the tank cavity to maintain the pressure of the tank cavity, and the cap screwing operation is performed in the pressure maintaining cavity by the cap screwing head, so that leakage of gas in the tank cavity in the cap screwing process is avoided.
Drawings
The application is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of a pressure maintaining screw cap head in the application;
FIG. 2 is a cross-sectional view of a pressure maintaining screw cap head in accordance with the present application;
FIG. 3 is a schematic diagram of the whole structure of the pressure maintaining cap screwing mechanism in the application;
FIG. 4 is a schematic view of the structure of the pressure maintaining screw cap mechanism according to another view of the whole of the application;
FIG. 5 is a cross-sectional view of the pressure maintaining screw cap mechanism of the present application;
fig. 6 is an enlarged view of the structure at a in fig. 5.
In the figure: 10. pressure maintaining cap screwing head; 101. a pressure maintaining cover; 1011. a pressure maintaining cavity; 1012. an air filling hole; 1013. a metal part; 1014. a rubber part; 1015. an air outlet hole; 1016. edge portions; 102. a rotating shaft; 1021. an upper shaft; 1022. a lower shaft; 1023. a universal joint; 103. rotating the seal; 1031. a first bearing; 1032. rotating the sealing ring; 1033. a shell ring; 1034. a first seal ring; 1035. a seal ring; 1036. an annular body; 1037. a skirt edge; 104. a capping head; 105. a pressure sensor; 11. a first lifting device; 12. a second lifting device; 13. a rotation driving device; 131. a first gear; 132. a second gear; 133. a first motor; 134. a second bearing; 14. a fixed bracket; 15. a movable bracket; 151. an upper support plate; 1511. a second avoidance hole; 152. a lower support plate; 1521. a deviation correcting hole; 16. a guide rod; 17. an arc-shaped plate; 18. a mounting plate; 19. a sliding sleeve; 20. a deviation correcting seat; 201. the upper part of the deviation correcting seat; 2011. a step hole; 202. the lower part of the deviation correcting seat; 203. a first avoidance hole; 21. an elastic member; 22. a limit rod; 23. a spring mounting base; 24. a pushing cylinder; 25. a stop plate;
300. a can lid.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The description of the present application in terms of "left", "right", "upper", "lower", "top", "bottom", etc. directions are defined based on the relationship of orientation or position shown in the drawings, and are merely for convenience of description and simplification of description, rather than to indicate or imply that the described structure must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present application. In the description of the present application, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 and 2, the present application is a pressure-maintaining cap screwing head 10 for material packaging, which is used for screwing a can body of the material packaging, and comprises a pressure-maintaining cover 101, a rotating shaft 102, a cap screwing head 104 and a pressure sensor 105.
The pressure maintaining cover 101 is provided with an inner cavity penetrating through the upper end and the lower end, a rotating shaft 102 part penetrates into the pressure maintaining cover 101 from the top end of the pressure maintaining cover 101 and is in rotary sealing connection with the pressure maintaining cover 101 through a rotary sealing piece 103, the rotary sealing piece 103 separates a pressure maintaining cavity 1011 positioned at the lower part of the inner cavity in the inner cavity, a cap screwing 104 is positioned in the pressure maintaining cavity 1011 and is fixedly connected with the bottom end of the rotating shaft 102, and the cap screwing 104 is in clearance fit with the cavity wall of the pressure maintaining cavity 1011. An air charging hole 1012 is formed in the wall of the pressure maintaining cavity 1011, so that an external air charging device (not shown) can charge air into the pressure maintaining cavity 1011 through the air charging hole 1012. The pressure sensor 105 can detect the air pressure in the hold pressure chamber 1011.
When the pressure maintaining cover 101 is used, the pressure maintaining cover 101 is firstly pressed on the top surface of a tank body (not shown) from the upper side and covers the tank opening of the tank body, the pressure maintaining cover 101 is in sealing connection with the tank body, then gas (such as nitrogen and other inert gases) is introduced into the pressure maintaining cavity 1011 from the gas charging hole 1012, so that the gas enters the tank cavity through the tank opening, the pressure sensor 105 detects the air pressure in the pressure maintaining cavity 1011 in real time, and the air pressure detected by the pressure sensor 105 is the air pressure in the tank cavity because the pressure maintaining cavity 1011 is communicated with the tank cavity. After the air pressure value detected by the pressure sensor 105 reaches the air pressure value in the preset tank cavity, the rotating shaft 102 carries the cap screwing head 104 and the tank cap 300 positioned on the cap screwing head 104 synchronously descends along the axial direction of the rotating shaft 102 relative to the pressure maintaining cover 101 to cover the tank cap 300 on the tank opening, then the rotating shaft 102 drives the cap screwing head 104 and the tank cap 300 to rotate relative to the pressure maintaining cover 101 to screw the tank cap 300 in the tank opening, the tank opening is sealed, the air pressure in the tank cavity can be always kept at the preset value in the whole cap screwing process, and the air pressure in the tank cavity is prevented from being insufficient due to leakage of air in the tank cavity to the outside in the cap screwing process.
Specifically, the inner cavity is in a reducing stepped hole shape and comprises a first hole section, a second hole section and a third hole section which are sequentially arranged from the upper end to the lower end of the inner cavity. The rotary seal 103 includes a first bearing 1031 and a rotary seal 1032 provided at a distance between the pressure retaining cover 101 and the rotary shaft 102. The first bearing 1031 is embedded in the first hole section, and the edge of the bottom of the first bearing 1031 is fixedly connected to the bottom end face of the first hole section through bolts. The rotating shaft 102 is connected with the first bearing 1031 through a key, so that the rotating shaft 102 can rotate relative to the pressure maintaining cover 101 and can axially move relative to the pressure maintaining cover 101. Preferably, the key between the shaft 102 and the first bearing 1031 is a guide flat key or spline.
The rotary sealing ring 1032 comprises a shell ring 1033, a first sealing ring 1034 and a sealing ring 1035, wherein the shell ring 1033 is embedded in the second hole section, and the edge of the bottom of the shell ring 1033 is fixedly connected with the bottom end surface of the second hole section through bolts. The first seal 1034 is mounted between the housing ring 1033 and the bore wall of the second bore section to seal therebetween. An annular caulking groove is arranged in the shell ring 1033, a sealing ring 1035 is embedded in the annular caulking groove and can rotate relative to the shell ring 1033, and the sealing ring 1035 is tightly sleeved on the rotating shaft 102 to connect the shell ring 1033 and the rotating shaft 102 in a sealing way. When the rotating shaft 102 rotates relative to the pressure maintaining cover 101, the rotating shaft 102 drives the sealing ring 1035 to rotate relative to the shell ring 1033; when the rotating shaft 102 moves axially relative to the pressure maintaining cover 101, the rotating shaft 102 slides axially relative to the seal ring 1035. Preferably, two seal rings 1035 are mounted within the housing ring 1033.
Further, the sealing ring 1035 includes an annular main body 1036 and a plurality of rings of skirt rims 1037 located in the inner ring of the annular main body 1036, the annular main body 1036 is embedded in the embedded groove of the shell ring 1033, each skirt rim 1037 is arranged at intervals along the axial direction of the annular main body 1036, and is tightly sleeved on the rotating shaft 102, so that the sealing performance between the sealing ring 1035 and the rotating shaft 102 is improved, the contact area between the sealing ring 1035 and the rotating shaft 102 is reduced, and the friction force required to be overcome when the rotating shaft 102 slides axially relative to the sealing ring 1035 is reduced.
In one embodiment, to ensure the tightness between the pressure maintaining cover 101 and the can body after the pressure maintaining cover 101 abuts against the can body, the pressure maintaining cover 101 is formed by splicing the metal part 1013 located at the upper part and the rubber part 1014 located at the lower part. The metal part 1013 is made of hard metal to ensure the structural strength of the pressure maintaining cover 101, and the air charging hole 1012 is formed in the metal part 1013. The sealing part is made of sealing materials such as rubber, so that the pressure maintaining cover 101 can be directly connected with the tank in a sealing way after being pressed on the tank, and leakage of gas from the pressure maintaining cover 101 to the tank is avoided. Further, sealing rings are provided between the metal part 1013 and the rubber part 1014 and at the bottom of the rubber part 1014, so that the sealability between the metal part 1013 and the rubber part 1014 and between the rubber part 1014 and the can body is further improved.
In an embodiment, the pressure sensor 105 is disposed outside the pressure maintaining cover 101 and connected to the pressure maintaining cover 101 through an air pipe, and at this time, the pressure maintaining cover 101 is provided with an air outlet 1015 connected to the air pipe.
Referring to fig. 3-5, the present application further discloses a pressure-maintaining cap screwing mechanism capable of automatically maintaining pressure and screwing cap, which comprises the pressure-maintaining cap screwing head 10, a first lifting device 11 for driving the pressure-maintaining cap 101 and the rotating shaft 102 to synchronously move along the axial direction of the rotating shaft 102, a second lifting device 12 for driving the rotating shaft 102 to axially move along the rotating shaft 102 relative to the pressure-maintaining cap 101, and a rotation driving device 13 for driving the rotating shaft 102 to rotate relative to the pressure-maintaining cap 101.
Specifically, the pressure maintaining cap screwing mechanism further comprises a fixed support 14 and a movable support 15, the fixed support 14 and the movable support 15 are connected through a first lifting device 11, preferably, the first lifting device 11 adopts a three-shaft cylinder, the cylinder body of the three-shaft cylinder is fixedly connected to the side face of the movable support 15, the cylinder shaft of the three-shaft cylinder is fixedly connected with the bottom end of the fixed support 14, and the first lifting device 11 can drive the movable support 15 to move up and down relative to the fixed support 14.
The rotary driving device 13 includes a first gear 131, a second gear 132 and a first motor 133, the first gear 131 is rotatably connected to the top of the fixed support 14 through a second bearing 134, the first motor 133 is located at one side of the first gear 131, and is fixedly mounted on the top of the fixed support 14 through a bolt, and the second gear 132 is fixedly mounted on a motor shaft of the first motor 133 and is meshed with the first gear 131, so that the first motor 133 can drive the first gear 131 to rotate through the second gear 132. The rotating shaft 102 penetrates through the first gear 131 and the second gear 134, and is connected with the inner rings of the first gear 131 and/or the second gear 134 through a guide flat key or a spline, so that the first gear 131 can drive the rotating shaft 102 to rotate, and the rotating shaft 102 can axially move relative to the first gear 131.
The pressure maintaining cover 101 is arranged on the movable support 15, a guide rod 16 is fixedly arranged at the top of the movable support 15, the guide rod 16 is connected with the rotating shaft 102 through the second lifting device 12, and the rotating shaft 102 can be driven to axially move along the second lifting device 12 relative to the pressure maintaining cover 101. Specifically, two guide rods 16 are provided, the two guide rods 16 are respectively located at two sides of the rotating shaft 102, and the axial direction of each guide rod 16 is parallel to the axial direction of the rotating shaft 102. The top ends of the two guide rods 16 are connected through an arc-shaped plate 17. The top end of the rotating shaft 102 is fixedly provided with a mounting plate 18, the mounting plate 18 is positioned below the arc-shaped plate 17, two ends of the mounting plate 18 are provided with sliding sleeves 19 which are respectively in sliding fit with the two guide rods 16, the second lifting device 12 adopts an air cylinder, the cylinder body of the second lifting device 12 is fixedly arranged on the arc-shaped plate 17, and the air cylinder shaft of the second lifting device 12 is fixedly connected with the top surface of the mounting plate 18.
When the cover is screwed, the first lifting device 11 drives the movable support 15 to move downwards along the axial direction of the rotating shaft 102 relative to the fixed support 14, so that the movable support 15 drives the pressure maintaining cover 101, the rotating shaft 102, the guide rod 16 and the second lifting device 12 to move downwards synchronously until the bottom end of the pressure maintaining cover 101 is abutted to the top surface of the tank body to cover the tank opening, and the external air charging device charges air into the pressure maintaining cavity 1011 and the tank body through the air charging hole 1012, and after the air pressure reaches a preset value, air charging is stopped. Then, the second lifting device 12 drives the mounting plate 18 to slide downwards along the guide rod 16, and drives the rotating shaft 102, the cap screwing head 104 and the tank cover 300 to synchronously move downwards relative to the pressure maintaining cover 101 until the tank cover 300 covers the tank opening; the first motor 133 drives the first gear 131 to rotate through the second gear 132, so that the first gear 131 drives the rotating shaft 102 to synchronously rotate, and further the rotating shaft 102 drives the cap screwing head 104 and the can cap 300 to synchronously rotate relative to the pressure maintaining cover 101, so that the can cap 300 is screwed in the can opening. After screwing the can lid 300, the second lifting device 12 drives the rotating shaft 102 and the cap screwing head 104 to lift, and after the cap screwing head 104 is lifted to a set height, the first lifting mechanism lifts the movable support 15 relative to the fixed support 14 by driving the movable support 15, so that the movable support 15 drives the second lifting device 12, the rotating shaft 102 and the pressure maintaining cover 101 to synchronously lift. In order to check whether the can cover 300 is screwed or not, after the pressure maintaining cover 101 is lifted for ten seconds, the first lifting mechanism presses the can body with the pressure maintaining cover 101 again to cover the can opening, the pressure maintaining cavity 1011 is filled with gas with set flow, when the pressure sensor 105 detects that the air pressure in the pressure maintaining cavity 1011 is set value, the can cover 300 is screwed, the first lifting mechanism lifts the pressure maintaining cover 101 again, and the pressure maintaining and cover screwing process is finished; when the pressure sensor 105 detects that the air pressure in the pressure maintaining cavity 1011 is lower than the set value, the pressure sensor 105 gives an alarm, and a worker operates the pressure maintaining cap screwing mechanism to screw the cap again.
Referring to fig. 3-6, in order to enable the cap screwing operation to be performed when there is a slight misalignment between the cap screwing head 104 and the can opening in the axial direction perpendicular to the can opening, in an embodiment, the movable support 15 includes an upper support plate 151 and a lower support plate 152 that are disposed opposite to each other, a second avoiding hole 1511 is formed in the upper support plate 151, and a deviation rectifying hole 1521 is formed in the lower support plate 152. The top end of the pressure maintaining cover 101 is fixedly provided with a deviation correcting seat 20, the upper part 201 of the deviation correcting seat is arranged between the upper supporting plate 151 and the lower supporting plate 152 and is connected with the upper supporting plate 151 through an elastic piece 21, the lower part 202 of the deviation correcting seat is fixedly connected with the pressure maintaining cover 101 through bolts, and the lower part 202 of the deviation correcting seat is in clearance fit with a deviation correcting hole 1521, so that the pressure maintaining cover 101 can be movably connected with the movable support 15 through the deviation correcting seat 20 and the elastic piece 21, and a first avoidance hole 203 coaxially arranged with a second avoidance hole 1511 is formed in the deviation correcting seat 20.
The rotation shaft 102 includes an upper shaft 1021 and a lower shaft 1022, and the upper shaft 1021 and the lower shaft 1022 are connected by a universal joint 1023, so that rotation power generated to the upper shaft 1021 when the first gear 131 rotates can be transmitted to the lower shaft 1022, and a certain angle change between the upper shaft 1021 and the lower shaft 1022 is allowed. Wherein, the universal joint 1023 is arranged between the upper supporting plate 151 and the lower supporting plate 152, the upper shaft 1021 is in clearance fit with the second avoiding hole 1511, and the bottom end of the upper shaft 1021 is connected with the top end of the universal joint 1023. The lower shaft 1022 is in clearance fit with the first avoiding hole 203, the top end of the lower shaft 1022 is connected with the bottom end of the universal joint 1023, the middle part of the lower shaft 1022 is connected with the pressure maintaining cover 101 in a sealing rotation manner through the rotary sealing piece 103, and the first gear 131 drives the upper shaft 1021 to rotate, so that the upper shaft 1021 drives the lower shaft 1022 to rotate relative to the pressure maintaining cover 101 through the universal joint 1023.
When the cover is screwed, the lower shaft 1022, the pressure maintaining cover 101 and the deviation correcting seat 20 are inclined relative to the movable bracket 15 and the upper shaft 1021.
In an embodiment, to improve the stability of the connection between the deviation correcting seat 20 and the movable support 15, the upper portion 201 of the deviation correcting seat is disc-shaped, the upper portion 201 of the deviation correcting seat has three stepped holes 2011 uniformly spaced around the first avoiding hole 203, three limiting rods 22 are disposed between the upper support plate 151 and the lower support plate 152, and the three limiting rods 22 respectively penetrate through the three stepped holes 2011 and are in clearance fit with the corresponding stepped holes 2011, so that the deviation of the deviation correcting seat 20 relative to the movable support 15 is avoided. The elastic pieces 21 are springs and are arranged in one-to-one correspondence with the limiting rods 22, spring mounting seats 23 are arranged on the upper portions of the limiting rods 22, the elastic pieces 21 are sleeved on the corresponding limiting rods 22, the upper ends of the elastic pieces 21 are fixedly connected with the spring mounting seats 23, and the lower ends of the springs are fixedly connected to the step surfaces in the corresponding step holes 2011. The deviation correcting seat 20 is movably connected with the movable bracket 15 through a spring. The lower part 202 of the deviation correcting seat is provided with an outer conical wall which is reduced towards the pressure maintaining cover 101, the deviation correcting hole 1521 is a conical hole, and the outer conical wall is in clearance fit with the wall of the conical hole, so that the attractiveness of the structure is improved.
In an embodiment, in order to avoid the excessive air pressure in the pressure maintaining cavity 1011 from jacking up the pressure maintaining cover 101, the outer side of the pressure maintaining cover 101 is provided with an annular edge 1016, one side of the pressure maintaining cover 101 is provided with a stop plate 25 and a pushing cylinder 24 for pushing the stop plate 25 to move, the stop plate 25 is provided with a notch adapted to the outer diameter of the pressure maintaining cover 101, the pushing cylinder 24 can push the stop plate 25 to the upper side of the edge 1016, so that the stop plate 25 blocks the path of the upward movement of the pressure maintaining cover 101, and the leakage of air in the tank body caused by the bouncing up of the pressure maintaining cover 101 under the action of air pressure is avoided, and preferably, the pushing cylinder 24 is fixedly arranged at the bottom of the movable bracket 15.
The foregoing describes one embodiment of the present application in detail, but the description is only a preferred embodiment of the present application and should not be construed as limiting the scope of the application. All equivalent changes and modifications within the scope of the present application are intended to be covered by the present application.
Claims (10)
1. The utility model provides a pressurize spiral cover head for material packing, its characterized in that, includes pressurize cover, pivot, spiral cover head and pressure sensor, the pressurize cover has the inner chamber of link up upper and lower end, pivot part follow the top of pressurize cover wears to establish in the pressurize cover, with rotate and sealing connection through rotary seal spare between the pressurize cover, rotary seal spare is in separate out in the inner chamber and be located the pressurize chamber of inner chamber lower part, the spiral cover head is located the pressurize intracavity just with pivot bottom fixed connection, the air filling hole has been seted up on the chamber wall in pressurize chamber, pressure sensor can detect the atmospheric pressure in the pressurize chamber.
2. The pressure maintaining cap screwing head for material packaging according to claim 1, wherein the rotary sealing piece comprises a first bearing and a rotary sealing ring, wherein the first bearing and the rotary sealing ring are arranged between the pressure maintaining cap and the rotary shaft at intervals, the first bearing is fixedly arranged in the pressure maintaining cap, and the rotary shaft is connected with the first bearing through a key and can axially move relative to the pressure maintaining cap; the rotary sealing ring comprises a shell ring fixedly arranged in the pressure maintaining cover, a first sealing ring for sealing the shell ring and the pressure maintaining cover, and a sealing ring for sealing the rotating shaft and the shell ring, wherein when the rotating shaft rotates relative to the pressure maintaining cover, the rotating shaft drives the sealing ring to rotate relative to the shell ring; when the rotating shaft axially moves relative to the pressure maintaining cover, the rotating shaft axially slides relative to the sealing ring.
3. The pressure maintaining cap screwing head for material packaging according to claim 2, wherein the sealing ring comprises an annular main body and a plurality of rings of skirt edges positioned in an inner ring of the annular main body, and each skirt edge is axially arranged at intervals along the annular main body and is tightly sleeved on the rotating shaft.
4. The pressure maintaining capping head for material packaging according to claim 2, wherein the key between the rotating shaft and the first bearing is a guide flat key or a spline.
5. The pressure maintaining cap screwing head for material packaging according to claim 1, wherein the pressure maintaining cover is formed by splicing a metal part positioned at the upper part and a rubber part positioned at the lower part.
6. A pressure maintaining cap screwing mechanism, comprising the pressure maintaining cap screwing head for material packaging according to any one of claims 1 to 5, further comprising:
the first lifting device is used for driving the pressure maintaining cover and the rotating shaft to synchronously move along the axial direction of the rotating shaft;
the second lifting device is used for driving the rotating shaft to axially move along the rotating shaft relative to the pressure maintaining cover;
the rotary driving device is used for driving the rotating shaft to rotate relative to the pressure maintaining cover.
7. The pressure maintaining cap screwing mechanism according to claim 6, further comprising a fixed bracket and a movable bracket, wherein the fixed bracket and the movable bracket are connected through the first lifting device; the top of the fixed bracket is provided with a first gear and a first motor, the first gear is rotationally connected to the fixed bracket, the first motor drives the first gear to rotate through a second gear, and the first gear, the second gear and the first motor jointly form the rotary driving device; the rotating shaft penetrates through the first gear, rotates synchronously with the first gear and can move relative to the first gear along the axial direction of the rotating shaft; the pressure maintaining cover is arranged on the movable support, a guide rod is fixedly arranged at the top of the movable support, and the second lifting device is fixedly arranged on the guide rod and is connected with the rotating shaft; the first lifting device can drive the movable support to move along the axial direction of the rotating shaft relative to the fixed support, so that the pressure maintaining cover and the rotating shaft move synchronously along with the movable support, and the second lifting device drives the rotating shaft to move along the axial direction of the pressure maintaining cover relative to the rotating shaft.
8. The pressure maintaining cap screwing mechanism according to claim 7, wherein the movable support comprises an upper support plate and a lower support plate which are oppositely arranged, a correction hole is formed in the lower support plate, a correction seat is fixedly arranged at the top end of the pressure maintaining cap, the lower part of the correction seat is in clearance fit with the correction hole, the upper part of the correction seat is arranged between the upper support plate and the lower support plate, the upper part of the correction seat is connected with the upper support plate through an elastic piece, the rotating shaft comprises an upper shaft and a lower shaft, and the upper shaft is connected with the lower shaft through a universal joint.
9. The pressure maintaining cap screwing mechanism according to claim 8, wherein the lower part of the deviation correcting seat is provided with an outer conical wall which is reduced downwards, the deviation correcting hole is a conical hole, and the outer conical wall is in clearance fit with the wall of the conical hole.
10. The pressure maintaining cap screwing mechanism according to claim 7, wherein a mounting plate is fixedly arranged at the movable end of the second lifting device, the top end of the rotating shaft is fixedly arranged on the mounting plate, a sliding sleeve which is in sliding fit with the guide rod is fixedly arranged on the mounting plate, and the axial direction of the guide rod is parallel to the axial direction of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311469171.4A CN117185223B (en) | 2023-11-07 | 2023-11-07 | Pressure-maintaining cap screwing head and pressure-maintaining cap screwing mechanism for material packaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311469171.4A CN117185223B (en) | 2023-11-07 | 2023-11-07 | Pressure-maintaining cap screwing head and pressure-maintaining cap screwing mechanism for material packaging |
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| CN117185223A true CN117185223A (en) | 2023-12-08 |
| CN117185223B CN117185223B (en) | 2024-02-02 |
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| CN202311469171.4A Active CN117185223B (en) | 2023-11-07 | 2023-11-07 | Pressure-maintaining cap screwing head and pressure-maintaining cap screwing mechanism for material packaging |
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