Aluminum cap screwing head

Abstract

The invention discloses an aluminum cap screwing head, and relates to the field of packaging machinery for liquids such as wines and beverages. After the lifting and rotating motion transmitted by the transmission part is received, threads matched with the threads on the container opening can be spun along the outer circumference of the aluminum cover, and the lower edge of the aluminum cover is pressed and sealed on the lower edge face of the container opening. According to the technical scheme, the cap screwing head comprises an elastic lifting mechanism, a central cap containing support and a threaded rotary knife assembly. The brand-new cap screwing head is designed, after receiving lifting and rotating motion transmitted by other structural parts, an aluminum cap can be stably compacted along threads of a container opening, the aluminum cap is kept attached to the container opening to complete cap sealing, and the cap screwing head is exquisite in structure, good in machining effect and high in machining efficiency.

Description

Technical Field

[0001] The invention relates to the field of liquid packaging machinery for wine, beverages and the like. Background Art

[0002] In the beverage, alcohol and other packaging machinery industries, aluminum caps without prefabricated threads are an important method for sealing glass containers. In the process of sealing the container with aluminum screw caps without prefabricated threads, the aluminum cap needs to be transported to the container mouth first, and the capping machine drives the capping head to spin out threads matching the threads on the container mouth along the outer circumference of the cap, and press the lower edge of the cap body to seal on the lower edge of the container mouth.

[0003] However, in the prior art, the capping head of the capping machine has always had many problems in sealing production: First, during the capping process, the screw cutter of the capping head can easily scratch or even cut the aluminum cap; Second, after the capping is completed, as the capping head rises and leaves the bottle mouth, the thread cutter will not open in time to leave the thread groove, causing the thread cutter to scratch the surface of the cap body; Third, the cover is not straight after sealing; the upper end of the cover is not pressed and sealed on the bottle mouth, etc.

[0004] Therefore, how to design a new screw capping head that can stably press the aluminum cap along the thread of the container mouth after receiving the lifting and rotating motion transmitted by other structural parts so that it can keep fit with the container mouth to complete the capping has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0005] In view of the above problems, the present invention proposes an aluminum cap screwing head, which can screw out threads matching the threads on the container mouth along the outer circumference of the aluminum cap after receiving the lifting and rotating motion transmitted by the transmission component, and press the lower edge of the aluminum cap onto the lower edge surface of the container mouth.

[0006] The technical solution of the present invention is as follows: the capping head comprises an elastic lifting mechanism 100, a central capping support 200 and a threaded screwdriver assembly 300; The elastic lifting mechanism 100 includes a guide rod seat 101, a guide rod 102 and a core shaft. The guide rod seat 101 is fixedly mounted on the transmission component to receive the rotation and lifting motion of the transmission component. The guide rod 102 passes through the guide rod seat 101, and its top end is suspended on the guide rod seat 101. The top of the core shaft passes through the center of the guide rod seat 101. The central container cover support 200 includes a bearing seat 202, a container cover head 208, a push rod 205 and an annular top block 209. The bearing seat 202 is fixedly mounted on the bottom end of the guide rod 102. The top of the container cover head 208 is rotatably connected to the center of the bearing seat 202, and the top of the container cover head 208 is fixedly connected to the bottom end of the core shaft 201. The interior of the container cover head 208 is in the shape of a stepped hole with a small top and a large bottom. The top of the push rod 205 is suspended in the small hole of the stepped hole, and the top block 209 is suspended in the large hole of the stepped hole, and the bottom of the push rod 205 passes through the top block 209. A push rod 109 is slidably mounted on the core shaft, and the push rod 109 is fixedly connected to the guide rod seat 101. An annular guide step is provided at the bottom end of the push rod 109. The thread cutter assembly 300 is symmetrically provided with two thread cutter assemblies 300 along the center of the core shaft and the container head 208. The middle parts of the two thread cutter assemblies 300 are hinged on the bearing seat 202, and the top ends of the two thread cutter assemblies are kept inwardly moving by a first transverse tension spring 311. A first roller bearing 312 is rotatably connected to the upper part of the thread cutter assembly 300. The first roller bearing 312 is under the raised guide step. When the first roller bearing 312 contacts the guide step, the top ends of the two thread cutter assemblies 300 are stretched outward, and a thread cutter 301 is rotatably connected to the bottom of the thread cutter assembly 300.

[0007] The capping head also includes an edge banding cutter assembly 400, and two edge banding cutter assemblies 400 are symmetrically arranged along the core shaft and the center of the capping head 208. The middle parts of the two edge banding cutter assemblies 400 are hinged on the bearing seat 202, and the top ends of the two edge banding cutter assemblies are kept inwardly moving by a second transverse tension spring 411. A second roller bearing 412 is rotatably connected to the upper part of the edge banding cutter assembly 400, and the second roller bearing 412 is under the raised guide step. When the second roller bearing 412 contacts the guide step, the top ends of the two edge banding cutter assemblies 400 are stretched outward, and an edge banding cutter 401 is rotatably connected to the bottom of the edge banding cutter assembly 400, and the edge banding cutter 401 is lower than the thread cutter 301.

[0008] like Fig.14 , 15 As shown, as the guide rod seat 101 moves downward, the push rod 205 and the push block 209 will gradually contact and press on the bottle cap, so that the aluminum cap is stably pressed on the container mouth, and finally lifts up the bearing seat 202, the guide rod 102 and the core shaft, making an upward movement relative to the guide rod seat 101.

[0009] like Fig.14As shown, as the guide rod seat 101 moves downward, the bearing seat 202 moves upward relative to the guide rod seat 101, thereby driving the first roller bearing 312 to contact the guide step, so that the top ends of the two thread cutter assemblies 300 are pushed outward, that is, the bottom ends of the two thread cutter assemblies 300 are tightened inward, so that the thread cutters 301 contact and press on the side wall of the aluminum cover; and, because the guide rod seat 101 keeps receiving the rotational movement of the transmission component, it will also drive the two thread cutter assemblies 300 to rotate along the center of the core shaft, so that the thread cutters 301 rotate along the threads of the container mouth and press out spiral grooves on the side wall of the aluminum cover, thereby completing the capping operation of the aluminum cover.

[0010] like Fig.15 As shown, as the guide rod seat 101 moves downward, the bearing seat 202 moves upward relative to the guide rod seat 101, thereby driving the second roller bearing 412 to contact the guide step, so that the top ends of the two edge sealing knife assemblies 400 are pushed outward, that is, the bottom ends of the two edge sealing knife assemblies 400 are tightened inward, so that the edge sealing knife 401 contacts and presses on the bottom edge of the side wall of the aluminum cover; and, because the guide rod seat 101 keeps receiving the rotational movement of the transmission component, it will also drive the two edge sealing knife assemblies 400 to rotate along the center of the core shaft, so that the edge sealing knife 401 rotates along the bottom of the threaded position of the container mouth and presses out an inwardly concave annular groove on the bottom edge of the side wall of the aluminum cover, thereby completing the edge sealing operation of the bottom edge of the aluminum cover.

[0011] The present invention designs a new screw capping head, which can stably press the aluminum cap along the thread of the container mouth after receiving the lifting and rotating motion transmitted by other structural parts, so that the aluminum cap is kept in close contact with the container mouth to complete the capping, and has a delicate structure, good processing effect and high processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of this case. Figure 2 This is a top view of the case. Figure 3 yes Figure 2 AA section view, Figure 4 yes Figure 2 BB section view, Figure 5 yes Figure 2 CC section view, Figure 6 It is a three-dimensional diagram of the bearing seat in this case; Figure 7 is a cross-sectional view of the elastic lifting mechanism in this case. Figure 8 This is a cross-sectional view of the center cover support in this case. Fig. 9 This is a three-dimensional diagram of the thread cutter assembly in this case. Fig.10 is a cross-sectional view of the thread cutter assembly in this case. Fig.11 This is a cross-sectional view of the edge banding rotary cutter assembly in this case. Fig.12 is a cross-sectional view of the edge banding rotary cutter assembly in this case; Fig.13 It is a schematic diagram of the implementation method of this case. Fig.14 This is a schematic diagram of the action process when pressing the cover in this case. Fig.15 This is a schematic diagram of the action process when sealing the edge in this case. Fig.16 This is the structural diagram of the central rotating lifting mechanism of this case. Fig.17 This is the axial section view of the central rotating lifting mechanism of this case. Fig.18 yes Fig.17 DD section view.

[0013] In the figure, 100 is an elastic lifting mechanism, 101 is a guide rod seat, 102 is a guide rod, 103 is an upper bushing, 104 is a first spring, 105 is a lower bushing, 106 is a limit washer, 107 is a sliding bearing, 108 is a locking nut, 109 is a push rod, 110 is an equal height rod, and 111 is a guide seat; 200 is the central container cover support, 201 is the top cover pressure rod, 202 is the bearing seat, 203 is the sliding sleeve, 204 is the sliding rod, 205 is the top rod, 206 is the second spring, 207 is the guide sleeve, 208 is the container cover head, 209 is the top block, 210 is the third spring, 211 is the dust cover. 2011 is the long waist groove, 2081 is the positioning port, and 2082 is the shrink port; 300 is a thread cutter assembly, 301 is a thread cutter, 302 is a first vertical guide sleeve, 303 is a first swing rod, 304 is a first return spring, 305 is a first spring retaining ring, 306 is a first swing arm, 307 is a first adjusting screw, 308 is a first pre-compression spring, 309 is a first rotating shaft, 310 is a first mounting arm, 311 is a first tension spring, 312 is a first roller bearing, and 313 is a first draw hook; 400 is an edge banding rotary cutter assembly, 401 is an edge banding rotary cutter, 402 is a second vertical guide sleeve, 403 is a second rocker arm, 404 is a second return spring, 405 is a second spring retaining ring, 406 is a second rocker arm, 407 is a second adjusting screw, 408 is a second pre-load spring, 409 is a second rotating shaft, 410 is a second mounting arm, 411 is a second tension spring, 412 is a second roller bearing, 413 is a second draw hook, 414 is a third spring retaining ring, and 415 is a thrust ball bearing.

[0014] 50 is a central rotating lifting mechanism, 901 is a lifting cam, 902 is a fixed gear, 903 is a mounting seat, and 904 is a capping head; 501 is a housing, 502 is a bearing roller, 503 is a spindle, 504 is a rotating gear, 505 is a connecting sleeve, 506 is a power output head, 507 is a connecting seat, 508 is a sliding sleeve, and 509 is a key; 5051 is a limit sleeve, 5052 is a bearing, 5053 is an upper sealing sleeve, 5054 is a shaft seal, 5055 is a lower sealing sleeve, and 5056 is a rotary seal. DETAILED DESCRIPTION

[0015] In order to clearly illustrate the technical features of this patent, this patent is elaborated in detail below through a specific implementation method and in combination with its accompanying drawings.

[0016] The overall situation of this case Figure 1-6 As shown, the capping head includes an elastic lifting mechanism 100, a central cap support 200 and a threaded cutter assembly 300, each of which will be further described below.

[0017] About the elastic lifting mechanism 100: The elastic lifting mechanism 100 includes a guide rod seat 101, a guide rod 102 and a core shaft. The guide rod seat 101 is fixedly mounted on the transmission component to receive the rotation and lifting motion of the transmission component. The guide rod 102 passes through the guide rod seat 101, and its top end is suspended on the guide rod seat 101. The top of the core shaft passes through the center of the guide rod seat 101. The elastic lifting mechanism 100 is specifically as follows Figure 3 , 7 As shown: A plurality of guide rod holes are evenly opened in the guide rod seat 101 along the circumferential direction, a guide rod 102 is arranged in each guide rod hole, a sliding bearing 107 is also fixedly installed in the guide rod hole, the upper part of the guide rod 102 passes through the sliding bearing 107, and the top end of the guide rod 102 is fixedly connected to a limiting washer 106, the outer diameter of the limiting washer 106 is larger than the inner diameter of the guide rod hole, so that the top end of the guide rod 102 is suspended on the guide rod seat 101; in order to ensure that the guide rod has a downward movement tendency, in addition to relying on the deadweight of the guide rod and the lower connecting component, a first spring 104 can also be mounted on the upper part of the guide rod, and a step surface is provided in the middle part of the guide rod 102, the first spring 104 is pressed between the guide rod seat 101 and the step surface, so that the guide rod maintains a downward movement tendency.

[0018] In the above, the sliding bearing 107 is fixedly installed in the guide rod hole through the upper bushing 103.

[0019] In addition, in order to ensure the stability of the first spring 104 , a lower bushing 105 may be mounted on the step surface so that the bottom end of the spring 104 abuts against the lower bushing 105 ; and the top end of the spring 104 abuts against the upper bushing 103 .

[0020] In order to further ensure the stability of the structure, the central container cover support 200, the threaded cutter assembly 300, and the edge sealing cutter assembly 400 are protected, and the container can be better aligned, the bearing seat 202 is also fixedly connected with a height rod 110 coaxially arranged with each guide rod 102, the top of the height rod 110 is fixedly installed on the bearing seat 102, and the bottom of all the height rods 110 are fixedly connected to an annular guide seat 111, the guide seat 111 is located under the central container cover support 200, the threaded cutter assembly 300, and the edge sealing cutter assembly 400, and its inner wall is adapted to the outer wall of the container. When in use, the height rod 110 and the guide seat 111 will be lifted and rotated together with the guide rod seat 101 and the bearing seat 202, so as to effectively protect the working area of ​​the capping operation and the edge sealing operation, and due to the existence of the annular guide seat 111, the position alignment with the container can be completed in advance at the early stage of the guide rod seat 111 going down, so as to ensure the stability of subsequent work.

[0021] About the center cover support 200: The central container cover support 200 includes a bearing seat 202, a container cover head 208, a push rod 205 and an annular top block 209. The bearing seat 202 is fixedly installed at the bottom end of the guide rod 102. The top of the container cover head 208 is rotatably connected to the center of the bearing seat 202, and the top of the container cover head 208 is fixedly connected to the bottom end of the core shaft 201. The interior of the container cover head 208 is in the shape of a stepped hole with a small top and a large bottom. The top of the push rod 205 is suspended in the small hole of the stepped hole, and the top block 209 is suspended in the large hole of the stepped hole, and the bottom of the push rod 205 passes through the top block 209. In this way, Fig.14 , 15 As shown, as the guide rod seat 101 moves downward, the push rod 205 and the push block 209 will gradually contact and press on the bottle cap, so that the aluminum cap is stably pressed on the container mouth, and finally lifts up the bearing seat 202, the guide rod 102 and the core shaft, making an upward movement relative to the guide rod seat 101.

[0022] The central container cover support 200 is specifically as follows Figure 3 , 8 As shown: The bottom end of the mandrel is fixedly connected to the top end of the capping head 208 extending into the bearing seat 202 through a pressure capping push rod 201 , and a dust cover 211 is also fixedly mounted on the pressure sensing push rod 201 .

[0023] The outer wall of the container cover head 208 is also in a stepped shape with a small upper part and a large lower part. The upper part of the container cover head 208 is slidably covered with a sliding sleeve 203, and the upper part of the container cover head 208 is provided with a vertically arranged long waist groove 2011. The sliding sleeve 203 is fixedly installed with a sliding rod 204 that horizontally penetrates the long waist groove 2011 and the push rod 205, so that the top end of the push rod 205 is suspended in the small hole of the stepped hole; in order to ensure that the push rod has a downward movement tendency, in addition to relying on the deadweight of the push rod 205, a second spring 206 can also be arranged between the push rod 205 and the top of the inner wall of the container cover head 208, so that the push rod 205 maintains a downward movement tendency.

[0024] A guide sleeve 207 is also provided in the large hole of the stepped hole in the container head 208. The guide sleeve 207 can be slidably mounted on the lower part of the ejector rod 205 and is fixedly connected to the ejector block 209. The top end of the guide sleeve 207 has a limiting protrusion protruding outward, and the inner wall of the large hole of the stepped hole has a limiting sleeve protruding inward. The limiting sleeve can be slidably mounted on the outer wall of the guide sleeve 207, and the limiting protrusion is mounted on the limiting sleeve, so that the ejector block 209 is suspended in the large hole of the stepped hole. In order to ensure that the ejector block has a downward movement tendency, in addition to relying on the deadweight of the ejector block 209, a third spring 210 can also be provided between the ejector block 209 and the limiting sleeve, so that the ejector block 209 maintains a downward movement tendency.

[0025] The bottom opening of the container cover head 208 is composed of a positioning opening 2081 and a shrinking opening 2082 from bottom to top, and the inner diameter of the shrinking opening 2082 is matched with the outer diameter of the side wall of the aluminum cover.

[0026] About Thread Rotating Tool Kit 300: First, a push rod 109 is slidably mounted on the core shaft, and the push rod 109 is fixedly connected to the guide rod seat 101. An annular guide step is provided at the bottom end of the push rod 109; the top end of the push rod 109 is threadedly connected to a locking nut 108, and the middle part of the push rod is provided with a step surface that rests on the bottom surface of the guide rod seat. By tightening the locking nut 108, the push rod 109 and the guide rod seat 101 remain fixedly connected.

[0027] The thread cutter assembly 300 is symmetrically provided along the center of the core shaft and the container head 208. The middle parts of the two thread cutter assemblies 300 are hinged on the bearing seat 202, and the top ends of the two thread cutter assemblies are kept moving inward by the first transverse tension spring 311. The first roller bearing 312 is rotatably connected to the upper part of the thread cutter assembly 300. The first roller bearing 312 is located under the raised guide step, and its axis is perpendicular to the axis of the push rod 109. When the first roller bearing 312 contacts the guide step, the top ends of the two thread cutter assemblies 300 are stretched outward, and the thread cutter 301 is rotatably connected to the bottom of the thread cutter assembly 300. In this way, Fig.14 As shown, as the guide rod seat 101 moves downward, the bearing seat 202 moves upward relative to the guide rod seat 101, thereby driving the first roller bearing 312 to contact the guide step, so that the top ends of the two thread cutter assemblies 300 are pushed outward, that is, the bottom ends of the two thread cutter assemblies 300 are tightened inward, so that the thread cutters 301 contact and press on the side wall of the aluminum cover; and, because the guide rod seat 101 keeps receiving the rotational movement of the transmission component, it will also drive the two thread cutter assemblies 300 to rotate along the center of the core shaft, so that the thread cutters 301 rotate along the threads of the container mouth and press out spiral grooves on the side wall of the aluminum cover, thereby completing the capping operation of the aluminum cover.

[0028] The thread rotary cutter assembly 300 is specifically as follows Figure 5 , 9 、10 as shown: The thread rotary cutter assembly 300 includes a vertically arranged first mounting arm 310, the middle portion of the first mounting arm 310 is hinged to the bearing seat 202 via a first rotating shaft 309, and the top end of the first mounting arm 310 is fixedly connected to a first tension spring 311 via a first hook 313; The thread cutter 301 is installed at the bottom of the first mounting arm 310, and a first vertical guide sleeve 302 is fixedly installed at the bottom of the first mounting arm 310. A first swing rod 303 is installed through the first vertical guide sleeve 302. The center of the thread cutter 301 is connected to the bottom end of the first swing rod 303 as a whole. A first spring retaining ring 305 is fixedly connected to the top of the first swing rod 303. A first return spring 304 is provided between the first spring retaining ring 305 and the first vertical guide sleeve 302. In this way, the thread cutter 301 can be suspended at the bottom of the first mounting arm 310 under the action of the first swing rod 303 and the first return spring 304, and can rotate freely. In addition, due to the existence of the first return spring 304, the thread cutter 301 can also maintain an upward movement trend, so that after the capping operation is completed, it can automatically return to the upper position.

[0029] In the above, it should be particularly noted that the thread rotary cutter equipped with the first vertical guide sleeve has a certain inclination angle during the processing, and the inclination angle is the same as the thread lead angle at the bottle mouth of the container to be pressed.

[0030] A first swing arm 306 is further provided on the inner side of the upper portion of the first mounting arm 310. The bottom end of the first swing arm 306 is hinged to the upper portion of the first mounting arm 310, and the top end of the first swing arm 306 is rotatably connected to the first roller bearing 312. A first preload spring 308 is disposed between the upper portion of the first swing arm 306 and the first mounting arm 310 and is disposed transversely therebetween, as well as a first adjusting screw 307 that penetrates both of them; a first locking nut is threadedly connected to the first adjusting screw 307, and the upper portion of the first swing arm 306 and the first mounting arm 310 are pulled by the first adjusting screw 307 and the first locking nut, and a preload is provided to the first preload spring 308. The locking nut can be screwed in and out, so as to adjust the inclination of the first swing arm and the preload of the first preload spring 308, and the screwing in and out of the adjusting screw can also adjust the preload of the first preload spring 308, so that the first roller bearing 312 can better contact the guide step. In addition, more importantly, due to the reaction force when the thread cutter 301 contacts the bottle mouth, the first pre-load spring 308 can also play a good buffering role, thereby avoiding the thread cutter from scratching the bottle cap. Moreover, in the rising stage when the capping head completes the capping and rises away from the aluminum cap, the thread cutter 301 can also have a certain outward expansion stroke under the influence of the first pre-load spring 308, thereby avoiding excessive scratching with the pressed threads on the bottle cap.

[0031] About the edge banding rotary knife assembly 400: The capping head also includes an edge banding cutter assembly 400, and two edge banding cutter assemblies 400 are symmetrically arranged along the core shaft and the center of the capping head 208. The middle parts of the two edge banding cutter assemblies 400 are hinged on the bearing seat 202, and the top ends of the two edge banding cutter assemblies are kept inwardly moving by a second transverse tension spring 411. A second roller bearing 412 is rotatably connected to the upper part of the edge banding cutter assembly 400, and the second roller bearing 412 is located under the raised guide step. When the second roller bearing 412 contacts the guide step, the top ends of the two edge banding cutter assemblies 400 are stretched outward, and an edge banding cutter 401 is rotatably connected to the bottom of the edge banding cutter assembly 400, and the edge banding cutter 401 is lower than the thread cutter 301. In this way, Fig.15 As shown, as the guide rod seat 101 moves downward, the bearing seat 202 moves upward relative to the guide rod seat 101, thereby driving the second roller bearing 412 to contact the guide step, so that the top ends of the two edge sealing knife assemblies 400 are pushed outward, that is, the bottom ends of the two edge sealing knife assemblies 400 are tightened inward, so that the edge sealing knife 401 contacts and presses on the bottom edge of the side wall of the aluminum cover; and, because the guide rod seat 101 keeps receiving the rotational movement of the transmission component, it will also drive the two edge sealing knife assemblies 400 to rotate along the center of the core shaft, so that the edge sealing knife 401 rotates along the bottom of the threaded position of the container mouth and presses out an inwardly concave annular groove on the bottom edge of the side wall of the aluminum cover, thereby completing the edge sealing operation of the bottom edge of the aluminum cover.

[0032] The edge banding rotary cutter assembly 400 is specifically as follows Figure 4 , 11 、12 as shown: The edge banding rotary cutter assembly 400 includes a second mounting arm 410 arranged vertically, the middle portion of the second mounting arm 410 is hinged to the bearing seat 202 via a second rotating shaft 409, and the top end of the second mounting arm 410 is fixedly connected to the second tension spring 411 via a second hook 413; The edge banding rotary knife 401 is installed at the bottom of the second mounting arm 410, and a second vertical guide sleeve 402 is fixedly installed at the bottom of the second mounting arm 410. A second swing rod 403 is installed through the second vertical guide sleeve 402, and the bottom end of the second vertical guide sleeve 402 extends below the second mounting arm 410. The center of the edge banding rotary knife 401 is connected to the bottom end of the second swing rod 403 as a whole, and a second spring retaining ring 405 is fixedly connected to the top of the second swing rod 403. A second return spring 404 is provided between the second spring retaining ring 405 and the second vertical guide sleeve 402 and is sleeved on the upper part of the second swing rod 403. In this way, the edge banding knife 401 can be suspended at the bottom of the second mounting arm 410 under the action of the second rocker arm 403 and the second return spring 404, and can rotate freely. Since the bottom end of the second vertical guide sleeve 402 extends below the second mounting arm 410, it can be ensured that the edge banding knife 401 is lower than the threaded knife 301. In addition, due to the existence of the second return spring 404, the edge banding knife 401 can also maintain an upward movement trend, so that after the edge banding operation is completed, it can automatically return to its original position.

[0033] In order to make the rotation of the edge banding rotary knife 401 smoother, the second rocker arm 403 is also provided with a third spring retaining ring 414 and a thrust ball bearing 415. The top surface of the third spring retaining ring 414 is against the bottom end of the second return spring 404, and the thrust ball bearing 415 is against the bottom surface of the third spring retaining ring 414 and the top surface of the second vertical guide sleeve 402.

[0034] A second swing arm 406 is further provided on the inner side of the upper portion of the second mounting arm 410. The bottom end of the second swing arm 406 is hinged to the upper portion of the second mounting arm 410, and the top end of the second swing arm 406 is rotatably connected to the second roller bearing 412. A second preload spring 408 is disposed between the upper portion of the second swing arm 406 and the second mounting arm 410 and is disposed transversely therebetween, as well as a second adjusting screw 407 that penetrates both of them; a second anti-loosening nut is threadedly connected to the second adjusting screw 407, and the upper portion of the second swing arm 406 and the second mounting arm 410 are pulled by the second adjusting screw 407 and the second anti-loosening nut, and a preload is provided to the second preload spring 408. The anti-loosening nut can be screwed in and out, so as to adjust the inclination of the second swing arm and the preload of the second preload spring 408, and the screwing in and out of the adjusting screw can also adjust the preload of the second preload spring 408, so that the second roller bearing 412 can better contact the guide step. In addition, more importantly, when the edge sealing knife 401 contacts the bottom edge of the bottle mouth, due to the influence of the reaction force, the second pre-compression spring 408 can also play a good buffering role, thereby avoiding the edge sealing knife from scratching the bottle cap. Moreover, when the capping head completes the capping and rises away from the aluminum cap, the edge sealing knife 401 can also have a certain outward expansion stroke under the influence of the second pre-compression spring 408, thereby avoiding excessive scratching with the pressed threads on the bottle cap.

[0035] The overall layout of the capping machine is as follows Fig.13 As shown, the capping machine is arranged between the bottle inlet star wheel and the bottle outlet star wheel, so that the container carrying the aluminum cap will enter the capping machine under the conveyance of the bottle inlet star wheel. As the capping machine rotates, the lifting and rotating motion is transmitted to the capping head through the transmission component, and the aluminum cap on the container mouth is pressed and sealed. After the final capping is completed, the bottle outlet star wheel will discharge the material.

[0036] For the sake of clarity, the transmission components used to transmit lifting and rotating motion in this case are specifically described as follows: The transmission component is a central rotating lifting mechanism 500, such as Fig.16 As shown, the central rotating lifting mechanism 50 is fixedly connected to the central rotating shaft of the capping and sealing device through a mounting seat 903, and the central rotating shaft of the capping and sealing device is rotatably connected to the frame, and a fixed gear 902 and a lifting cam 901 centered on the axis of the central rotating shaft are also fixedly installed on the frame. The lifting cam 901 is annular, and its top surface is provided with protrusions in the bottle inlet area and the bottle outlet area; like Fig.17 , 18 As shown, the central rotating lifting mechanism 50 includes a housing 501, a sleeve 508, a bearing roller 502, a core shaft 503, a rotating gear 504, a connecting sleeve 505 and a power output head 506; The housing 501 is vertically fixedly mounted on the mounting seat 903, the lower part of the sliding sleeve 508 is installed through the housing 501, the top of the sliding sleeve 508 is fixedly mounted with a connecting seat 507, the bearing roller 502 is rotatably mounted on the connecting seat 507, and is always pressed on the top surface of the lifting cam 901, when the bearing roller 502 passes the raised portion, the sliding sleeve 508 rises as a whole relative to the housing 501, and when the bearing roller 502 leaves the raised portion, the sliding sleeve 508 falls as a whole relative to the housing 501; The mandrel 503 passes through the interior of the sleeve 508, and the top of the mandrel 503 is fixedly connected to the connecting seat 507. The connecting sleeve 505 is sleeved on the mandrel 503 and rotatably installed inside the sleeve 508. The bottom end of the connecting sleeve 505 is connected to the power output head 506 as a whole. The power output head 506 is provided with an external thread for installing the capping head 904, and the mandrel 503 also passes through the power output head 506. A transition block is also rotatably connected inside the power output head 506. The center of the transition block is provided with a square hole that passes through from top to bottom. The bottom end of the mandrel 503 is inserted into the square hole and rotates synchronously with the transition block; the rotating gear 504 is in a hollow columnar shape, and the rotating gear 504 is sleeved on the connecting sleeve 505 and rotates synchronously with the connecting sleeve 505 through a key 509. The rotating gear 504 is meshed with the fixed gear 902.

[0037] In this way, in the process of the central rotating lifting mechanism 50 swinging with the rotation of the central rotating shaft of the capping and sealing equipment, when the bearing roller 502 passes through the bottle inlet area, the sliding sleeve 508 drives the capping head to rise, so that the wine bottle and the bottle cap can enter the bottom of the capping head as the bottle inlet star wheel is turned, and when the bearing roller 502 leaves the bottle inlet area and rolls to the bottle outlet area, the sliding sleeve 508 drives the capping head to descend to perform the capping and pressing operations until the bearing roller 502 enters the bottle outlet area, and the sliding sleeve 508 drives the capping head to rise, so that the wine bottle and the bottle cap can leave the bottom of the capping head as the bottle outlet star wheel is turned.

[0038] In the above process: The lifting motion is transmitted to the capping head by the mandrel 503 and the power output head 506, and the mandrel 503 remains stationary relative to the connecting seat 507 and the sliding sleeve 508; Since the rotating gear 504 is meshed with the fixed gear 902, and the fixed gear 902 is fixedly connected to the frame, the rotating gear 504 will be forced to make a rotating motion with the swing of the central rotating lifting mechanism 50, and drive the connecting sleeve 505 and the power output head 506 to rotate around the core shaft 503, so as to achieve the purpose of continuously outputting the rotating motion to the capping head 904. The core shaft 501 of the central lifting mechanism 50 and the core shaft 201 of the capping head are inserted into the square hole of the transition block at the same time, so that the two core shafts do not participate in the transmission of the rotating motion.

[0039] During specific installation, the core shaft in the capping head 904 can be docked with the core shaft 501 in the central rotating lifting mechanism 50 , and the guide rod seat 101 in the capping head 904 can be fixedly installed on the power output head 506 in the central rotating lifting mechanism 50 .

[0040] A vertical opening is formed on one side of the upper portion of the sliding sleeve 508 facing the fixed gear 902 , and the rotating gear 504 is meshed with the fixed gear 902 at the vertical opening.

[0041] In the existing lifting structures, lubrication-free plastic bearings or linear bearings are mostly used as the support of the lifting structure to ensure the concentricity of the upper and lower parts. The degree of concentricity still depends on processing technology. Among them, lubrication-free plastic bearings convert the original sliding friction into rolling friction through the friction between the internal surface particles and the hard shaft, thereby reducing the friction resistance and heat generated by lifting. The principle of linear bearings is similar. Once the plastic particles of the bearing are worn out, it will generate very large resistance and cause serious wear of the central shaft. Based on this, this case also proposes the following measures.

[0042] The housing 501 and the sleeve 508 are fitted with a clearance, and the housing 501 is provided with an oil filling hole connected to a lubricating oil supply source and an eccentric oil groove. In this way, flowing lubricating oil can be injected into the clearance through the oil filling hole and recovered through the oil return hole. Finally, during the reciprocating movement of the sleeve relative to the housing, a good and effective lubrication effect is achieved. It should be noted that a sealing ring needs to be fixedly installed at the bottom of the housing 501 to prevent the clearance from leaking oil downward.

[0043] A limiting sleeve 5051 is fixedly installed on the top end of the connecting shaft sleeve 505 , and the limiting sleeve 5051 is fixedly connected to the rotating gear 504 .

[0044] In addition, in order to realize the rotational connection of the connecting sleeve, the lower part of the connecting sleeve 505 is rotationally connected to the lower part of the sliding sleeve 508 through two bearings 5052, and lubricating oil is filled between the connecting sleeve 505 and the lower part of the sliding sleeve 508.

[0045] In the above, in order to ensure the smoothness of the rotation of the connecting sleeve 505 in the shell 501, it is necessary to fill or actively inject lubricating oil into the lower shell. However, below the central rotating lifting mechanism 50 are the screw capping head and the wine bottle. Once the lubricating oil leaks, it will seriously affect the hygiene of the wine bottle. Based on this, the following sealing measures are also proposed in this case.

[0046] The middle part of the sliding sleeve 508 is also fixedly connected with an upper sealing sleeve 5053 sleeved on the connecting sleeve 505, and a shaft seal 5054 is provided between the inner wall of the sealing sleeve 5053 and the outer wall of the connecting sleeve 505; The bottom end of the sliding sleeve 508 is fixedly connected to a lower sealing sleeve 5055 sleeved on the power output head 506 , and a rotary seal 5056 is provided between the lower sealing sleeve 5055 and the power output head 506 .

[0047] In this way, a comprehensive and stable seal can be formed between the connecting sleeve 505, the power output head 506 and the lower part of the sliding sleeve 508, effectively avoiding the possibility of lubricating oil contaminating the wine bottle.

[0048] There are many specific implementation ways of the present invention. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. An aluminum cap screw capping head, characterized in that: The capping head comprises an elastic lifting mechanism (100), a central capping support (200) and a threaded screwdriver assembly (300); The elastic lifting mechanism (100) comprises a guide rod seat (101), a guide rod (102) and a core shaft; the guide rod seat (101) is fixedly mounted on a transmission component and is used to receive the rotational movement and lifting movement of the transmission component; the guide rod (102) passes through the guide rod seat (101) and its top end is suspended on the guide rod seat (101); the top end of the core shaft passes through the center of the guide rod seat (101); The central container cover support (200) comprises a bearing seat (202), a container cover head (208), a push rod (205) and an annular push block (209); the bearing seat (202) is fixedly mounted on the bottom end of the guide rod (102); the top of the container cover head (208) is rotatably connected to the center of the bearing seat (202); the top of the container cover head (208) is fixedly connected to the bottom end of the core shaft (201); the interior of the container cover head (208) is in the shape of a stepped hole with a small top and a large bottom; the top of the push rod (205) is suspended in the small hole of the stepped hole; the push block (209) is suspended in the large hole of the stepped hole; and the bottom of the push rod (205) passes through the push block (209); A push rod (109) is slidably mounted on the core shaft, the push rod (109) is fixedly connected to the guide rod seat (101), and an annular guide step is provided at the bottom end of the push rod (109); The thread cutter assemblies (300) are symmetrically provided along the center of the core shaft and the container head (208), the middle parts of the two thread cutter assemblies (300) are hinged on the bearing seat (202), and the top ends of the two thread cutter assemblies (300) are kept inwardly moving by a first transverse tension spring (311), and a first roller bearing (312) is rotatably connected to the upper part of the thread cutter assembly (300), and the first roller bearing (312) is located below the raised guide step. When the first roller bearing (312) contacts the guide step, the top ends of the two thread cutter assemblies (300) are stretched outward, and a thread cutter (301) is rotatably connected to the bottom of the thread cutter assembly (300).

2. The aluminum capping head according to claim 1, characterized in that: The guide rod seat (101) is provided with a plurality of guide rod holes evenly arranged along the circumferential direction, a guide rod (102) is arranged in each guide rod hole, a sliding bearing (107) is fixedly installed in the guide rod hole, the upper part of the guide rod (102) passes through the sliding bearing (107), and the top end of the guide rod (102) is fixedly connected to a limiting washer (106), the outer diameter of the limiting washer (106) being larger than the inner diameter of the guide rod hole; a first spring (104) is sleeved on the upper part of the guide rod, and a step surface is provided in the middle part of the guide rod (102), and the first spring (104) is abutted between the guide rod seat (101) and the step surface.

3. The aluminum capping head according to claim 2, characterized in that: The bearing seat (202) is also fixedly connected to an equal height rod (110) coaxially arranged with each guide rod (102); the top end of the equal height rod (110) is fixedly mounted on the bearing seat (102), and the bottom ends of all the equal height rods (110) are fixedly connected to an annular guide seat (111); the guide seat (111) is located below the central container cover support (200), the thread rotary cutter assembly (300), and the edge sealing rotary cutter assembly (400), and the inner wall of the guide seat is adapted to the outer wall of the container.

4. The aluminum capping head according to claim 1, characterized in that: The outer wall of the container cover head (208) is also in a stepped shape with a smaller top and a larger bottom. The upper part of the container cover head (208) is slidably mounted with a sliding sleeve (203), and a vertically arranged long waist groove (2011) is provided on the upper part of the container cover head (208). A sliding rod (204) that laterally penetrates the long waist groove (2011) and the push rod (205) is fixedly installed in the sliding sleeve (203); a second spring (206) is arranged between the push rod (205) and the top of the inner wall of the container cover head (208).

5. The aluminum capping head according to claim 4, characterized in that: A guide sleeve (207) is also provided in the large hole of the stepped hole in the container head (208). The guide sleeve (207) can be slidably mounted on the lower part of the top rod (205) and is fixedly connected to the top block (209). The top end of the guide sleeve (207) has a limiting protrusion protruding outward. The inner wall of the large hole of the stepped hole has a limiting sleeve protruding inward. The limiting sleeve can be slidably mounted on the outer wall of the guide sleeve (207), and the limiting protrusion is mounted on the limiting sleeve. A third spring (210) is provided between the top block (209) and the limiting sleeve.

6. The aluminum capping head according to claim 1, characterized in that: The thread rotary cutter assembly (300) comprises a first mounting arm (310) arranged vertically, the middle portion of the first mounting arm (310) being hinged to the bearing seat (202) via a first rotating shaft (309), and the top end of the first mounting arm (310) being fixedly connected to a first tension spring (311) via a first draw hook (313); The thread rotary cutter (301) is mounted at the bottom of a first mounting arm (310), a first vertical guide sleeve (302) is fixedly mounted at the bottom of the first mounting arm (310), a first swing rod (303) is installed through the first vertical guide sleeve (302), the center of the thread rotary cutter (301) is integrally connected to the bottom end of the first swing rod (303), a first spring retaining ring (305) is fixedly connected to the top end of the first swing rod (303), and a first return spring (304) sleeved on the upper part of the first swing rod (303) is provided between the first spring retaining ring (305) and the first vertical guide sleeve (302).

7. The aluminum capping head according to claim 6, characterized in that: A first swing arm (306) is also provided on the inner side of the upper portion of the first mounting arm (310); the bottom end of the first swing arm (306) is hinged to the upper portion of the first mounting arm (310), and the top end of the first swing arm (306) is rotatably connected to the first roller bearing (312); A first pre-stressed spring (308) is disposed between the upper portion of the first swing arm (306) and the first mounting arm (310) and is arranged transversely therebetween, as well as a first adjusting screw (307) that passes through both of them. A first anti-loosening nut is threadedly connected to the first adjusting screw (307), and the upper portion of the first swing arm (306) and the first mounting arm (310) are pulled by the first adjusting screw (307) and the first anti-loosening nut, thereby providing pre-stressed pressure to the first pre-stressed spring (308).

8. The aluminum capping head according to claim 1, characterized in that: The capping head further comprises an edge sealing rotary blade assembly (400), wherein two edge sealing rotary blade assemblies (400) are symmetrically arranged along the core shaft and the center of the capping head (208), wherein the middle parts of the two edge sealing rotary blade assemblies (400) are hinged on the bearing seat (202), and the top ends of the two edge sealing rotary blade assemblies (400) maintain an inward movement tendency through a transverse second tension spring (411), and a second roller bearing (412) is rotatably connected to the upper part of the edge sealing rotary blade assembly (400), and the second roller bearing (412) is located below the raised guide step, and when the second roller bearing (412) contacts the guide step, the top ends of the two edge sealing rotary blade assemblies (400) are stretched outward, and an edge sealing rotary blade (401) is rotatably connected to the bottom of the edge sealing rotary blade assembly (400), and the edge sealing rotary blade (401) is lower than the thread rotary blade (301).

9. The aluminum capping head according to claim 8, characterized in that: The edge banding rotary knife assembly (400) comprises a second mounting arm (410) arranged vertically, the middle portion of the second mounting arm (410) being hinged to the bearing seat (202) via a second rotating shaft (409), and the top end of the second mounting arm (410) being fixedly connected to a second tension spring (411) via a second draw hook (413); The edge banding rotary knife (401) is installed at the bottom of the second mounting arm (410), and a second vertical guide sleeve (402) is fixedly installed at the bottom of the second mounting arm (410). A second swing rod (403) is installed through the second vertical guide sleeve (402), and the bottom end of the second vertical guide sleeve (402) extends below the second mounting arm (410). The center of the edge banding rotary knife (401) is connected to the bottom end of the second swing rod (403) as a whole, and a second spring retaining ring (405) is fixedly connected to the top end of the second swing rod (403). A second return spring (404) sleeved on the upper part of the second swing rod (403) is provided between the second spring retaining ring (405) and the second vertical guide sleeve (402).

10. The aluminum capping head according to claim 9, characterized in that: A second swing arm (406) is also provided on the inner side of the upper portion of the second mounting arm (410); the bottom end of the second swing arm (406) is hinged to the upper portion of the second mounting arm (410), and the top end of the second swing arm (406) is rotatably connected to the second roller bearing (412); A second preload spring (408) is disposed between the upper portion of the second swing arm (406) and the second mounting arm (410) and is disposed transversely therebetween, as well as a second adjusting screw (407) that passes through both of them. A second anti-loosening nut is threadedly connected to the second adjusting screw (407), and the upper portion of the second swing arm (406) and the second mounting arm (410) are pulled by the second adjusting screw (407) and the second anti-loosening nut, thereby providing preload to the second preload spring (408).

Images