A cap hanging device with forward and reverse cap rubbing function

Abstract

The invention discloses a cap hanging device with forward and reverse cap rubbing function, comprising a bracket, a cap buckling unit and a cap rubbing unit are arranged on the bracket, the structure of the cap buckling unit comprises: a cap feeding slideway, an elastic positioning cover blocking component is arranged at the outlet of the cap feeding slideway; the structure of the cap rubbing unit comprises: a horizontal fixing plate is installed on the bracket above the cap feeding slideway, a cap pressing plate is arranged below the fixing plate, the cap pressing plate is hung below the fixing plate through an elastic suspension component, a left arc guide plate and a right arc guide plate are arranged below the cap pressing plate, the left arc guide plate and the right arc guide plate are connected to the bottom of the cap pressing plate through an elastic bottle protection connection component, the left arc guide plate, the right arc guide plate and the cap pressing plate jointly form a cap rubbing channel, a reverse cap rubbing strip and a forward cap rubbing strip are arranged in sequence in the cap rubbing channel along the bottle feeding direction, and a climbing plate is arranged directly below the cap rubbing channel. The invention has the advantages of simple structure and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of beverage filling equipment, in particular to a cap hanging device located in front of a capping machine. Background Art

[0002] A capping machine is a common device that automatically tightens a bottle cap onto the mouth of a bottle. A three-turn bottle mouth is a relatively special bottle mouth, that is, three threaded entrances are provided on the mouth of the bottle; the bottle cap that matches the three-turn bottle mouth is a three-turn cap, that is, three threaded buckle points are provided on the inner side of the bottle cap. Due to the characteristics of the three-turn cap, it is required to make a short reverse motion of the bottle cap before tightening it, so that the three threaded buckle points of the three-turn cap can be completely staggered with the three threaded entrances of the three-turn bottle mouth, so that the three-turn cap can be accurately put on the bottle mouth without damage. Since the capping head of a conventional capping machine does not have a capping head reversal function, it is impossible to complete the reversal operation before capping the bottle cap. At present, the invention patent with a patent application number of 201910179202.X discloses a "capping head forward and reverse driving device in a capping machine". The patent designs the capping head driving device of the capping machine so that the capping head in the capping machine can complete the reverse and forward operations of the bottle cap. During operation, the bottle pusher continuously pushes the bottles on the bottom plate into the capping machine along the outer arc plate through the push wheel. After the bottles enter the capping machine, the capping machine completes the operation of grabbing the bottle caps and screwing the caps forward and reversely through the capping head. However, the above patent structure has the following disadvantages: (1) the whole capping machine needs to be modified, which has high modification costs; (2) the structure is complex, with electrical structures such as a reduction motor, a power arc plate, and a conductive pulley, which is inconvenient to maintain and has a high cost. Summary of the invention

[0003] The purpose of the present invention is to provide a cap hanging device with forward and reverse cap rubbing function which has a simple structure, is easy to use and can realize forward and reverse operation of bottle caps without modifying a conventional capping machine.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a cap hanging device with forward and reverse cap rubbing function, comprising a bracket installed at the entrance of the capping machine, on which a cap-locking unit and a cap-rubbing unit are sequentially arranged along the direction in which the bottle pusher machine sends bottles to the capping machine, the structure of the cap-locking unit comprises: a cap-input slideway installed on the bracket, which is connected with the cap-discharging slideway of the cap sorter and is arranged obliquely downward, and an elastic positioning cap-blocking assembly is arranged at the outlet of the cap-input slideway, and the elastic positioning cap-blocking assembly can make the bottle caps arranged at the front of the cap-input slideway maintain the posture of the front part obliquely extending downward from the outlet of the cap-input slideway, so that the bottle mouth of the bottle can hang the bottle cap when the bottle conveyed by the bottle pusher machine passes through the outlet of the cap-input slideway; the structure of the cap-rubbing unit comprises: a horizontal fixing plate is installed on the bracket above the cap-input slideway, and a cap-pressing plate is arranged below the fixing plate, and the cap-pressing plate is hung below the fixing plate through an elastic suspension assembly, and the elastic suspension assembly makes the cap-pressing plate always have a relative To prevent the downward movement of the fixed plate and not hinder the capping plate from moving up relative to the fixed plate when subjected to external force, two left and right arc-shaped guide plates are arranged below the capping plate, and the left and right arc-shaped guide plates are connected to the bottom of the capping plate through an elastic bottle protection connection assembly. The left and right arc-shaped guide plates and the capping plate together form a cap rubbing channel, and in the cap rubbing channel, there are arranged in sequence along the bottle feeding direction to contact the bottle cap buckled on the bottle mouth so that the bottle cap is reversed. A rotating reverse cap rubbing strip and a forward cap rubbing strip used to contact the bottle cap buckled on the bottle mouth to make the bottle cap rotate in the forward direction; a climbing plate is arranged just below the cap rubbing channel, and the climbing plate is installed on the bottom plate of the bottle pusher. The climbing plate enables the bottle with the bottle cap buckled to move up and press against the cap pressing plate in the process of passing through the cap rubbing channel, so that the cap pressing plate can always press down the bottle cap in the process of the reverse cap rubbing strip and the forward cap rubbing strip in the cap rubbing channel rubbing the bottle cap buckled on the bottle.

[0005] Furthermore, the aforementioned cover hanging device with forward and reverse cover rubbing function, wherein: the structure of the elastic positioning cover blocking assembly includes: two cover blocking claws, the two cover blocking claws are distributed on the left and right sides of the cover entry slide, the rear end of each cover blocking claw is hingedly connected to the corresponding side outer wall of the cover entry slide through a pin shaft, the front end of each cover blocking claw extends forward to the front of the exit of the cover entry slide, and a first tension spring is connected between the two cover blocking claws. The first tension spring makes the front ends of the two cover blocking claws always have a tendency to move closer to each other, so that the front ends of the two cover blocking claws can be positioned in a left-right relative state to block the bottle caps moving out of the cover entry slide, so that the bottle caps arranged at the front of the cover entry slide can maintain the posture of the front part tilted downward and extending out of the exit of the cover entry slide.

[0006] Furthermore, the aforementioned cover hanging device with forward and reverse cover rubbing function, wherein: the structure of the elastic suspension component is: a plurality of mounting holes are arranged on the fixed plate, a plurality of vertical shafts are vertically installed on the top of the pressure cover plate, the vertical shafts on the pressure cover plate correspond one to one with the mounting holes on the fixed plate, each vertical shaft on the pressure cover plate passes through the corresponding mounting hole upward and is fitted with an elastic retaining ring after passing through the fixed plate, the pressure cover plate is hung under the fixed plate through the elastic retaining rings and the vertical shafts, a compression spring is arranged between the fixed plate and the pressure cover plate, the compression spring makes the pressure cover plate always have a tendency to move downward relative to the fixed plate.

[0007] Furthermore, the aforementioned cover hanging device with forward and reverse cover rubbing function, wherein: each mounting hole on the fixing plate is an internal threaded hole, and each mounting hole of the fixing plate is threadedly connected with a screw rod that can move up and down along the mounting hole, the upper end of each screw rod extends upward through the corresponding mounting hole and is threadedly connected with an upper tightening nut, and the lower end of each screw rod extends downward through the corresponding mounting hole and is threadedly connected with a lower tightening nut, the upper tightening nut and the lower tightening nut can be relative to each other to limit and fix the corresponding screw rod on the fixing plate, and at the position of each screw rod The lower end is provided with a circle of positioning bosses protruding outward from the outer wall of the screw rod. A through hole is provided in each screw rod which passes through the screw rod up and down and can allow the corresponding vertical axis to pass through. After each vertical axis on the pressure cover plate passes through the corresponding screw rod upward through the through hole of the corresponding screw rod, an elastic retaining ring is installed on the pressure cover plate. The pressure cover plate is hung under the fixed plate by cooperating with each elastic retaining ring and each vertical axis with each corresponding screw rod. A compression spring is installed on the outside of each vertical axis. The upper end of the compression spring presses upward against the positioning boss of the corresponding screw rod, and the lower end presses downward against the pressure cover plate. The compression spring makes the pressure cover plate always have a tendency to move downward relative to the fixed plate.

[0008] Further, the aforementioned cover hanging device with forward and reverse cover rubbing functions, wherein: the specific installation structure of the reverse cover rubbing strip in the cover rubbing channel is: a reverse cover rubbing strip mounting block is installed on the top of the left arc-shaped guide plate, the reverse cover rubbing strip is installed on the reverse cover rubbing strip mounting block, and the reverse cover rubbing strip is located at the top rear section of the left arc-shaped guide plate close to the cover buckle unit; the specific installation structure of the forward cover rubbing strip in the cover rubbing channel is: a forward cover rubbing strip mounting block is installed on the top of the right arc-shaped guide plate, the forward cover rubbing strip is installed on the forward cover rubbing strip mounting block, and the forward cover rubbing strip is located at the top front section of the right arc-shaped guide plate close to the cover buckle unit.

[0009] Furthermore, the aforementioned cap hanging device with forward and reverse cap rubbing function, wherein: the structure of the elastic bottle protection connection component includes: a rear fixed block is fixed on the top of the rear end of the pressure cover plate close to the cap buckle unit, and the left and right ends of the rear fixed block extend out of the pressure cover plate to the left and right sides respectively, and a front fixed block and a front movable block arranged opposite to each other are provided on the top of the front end of the pressure cover plate away from the cap buckle unit, the front fixed block is fixed to the top of the front end of the pressure cover plate, and the front movable block is movably arranged on the top of the front end of the pressure cover plate, the right end of the front fixed block extends out of the pressure cover plate to the right, and the left end of the front movable block extends out of the pressure cover plate to the left; a right rear connecting vertical axis is fixed at the rear end of the right arc-shaped guide plate, and a right front connecting vertical axis is fixed at the front end, and the front end of the right arc-shaped guide plate passes through the right front The connecting vertical axis is fixedly connected to the right end of the front fixed block, and the rear end of the right arc-shaped guide plate is fixedly connected to the right end of the rear fixed block through the right rear connecting vertical axis, so that the right arc-shaped guide plate is connected and fixed to the pressure cover plate as a whole; a left rear connecting vertical axis is fixed to the rear end of the left arc-shaped guide plate, and a left front connecting vertical axis is fixed to the front end; the rear end of the left arc-shaped guide plate is hinged to the left end of the front fixed block through the left rear connecting vertical axis, and the front end of the left arc-shaped guide plate is fixedly connected to the left end of the front movable block through the left front connecting vertical axis, so that the left arc-shaped guide plate can rotate relatively in the horizontal direction to approach or move away from the right arc-shaped guide plate, and a second tension spring is connected between the front movable block and the front fixed block, and the second tension spring makes the left arc-shaped guide plate always have a tendency to approach the right arc-shaped guide plate.

[0010] Furthermore, in the aforementioned cap hanging device with forward and reverse cap rubbing function, a magnetic block is installed on the cap pressing plate at the entrance position of the reverse cap rubbing strip.

[0011] Through the implementation of the above technical scheme, the beneficial effects of the present invention are: (1) simple structure, pure mechanical mechanism, easy to manufacture, install and maintain; (2) the structure of the capping unit is simple, which can make the bottle cap hang on the bottle mouth accurately and quickly; (3) before the bottle enters the capping machine, the bottle cap is first reversely capped by the reverse capping strip in the capping unit, so that the threaded buckle point of the bottle cap is staggered with the threaded entrance of the bottle mouth, so that the bottle cap can be accurately put on the bottle mouth without damage, and then the bottle cap is forwardly capped by the forward capping strip, so that the bottle cap is slightly pre-tightened on the bottle mouth, thereby achieving higher capping quality requirements; (3) the forward capping strip and the reverse capping strip are easy to replace, the cost is relatively low, and the cost of use is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a cover hanging device with forward and reverse cover rubbing function according to the present invention.

[0013] Figure 2 for Figure 1 A partial enlarged schematic diagram of .

[0014] Figure 3 for Figure 1Schematic diagram of the positional relationship between the cover snapping unit and the cover rubbing unit as seen from above.

[0015] Figure 4 for Figure 3 The structural schematic diagram of the cover rubbing unit shown in FIG. 1 is a schematic diagram of the structure of the cover pressing plate after hiding.

[0016] Figure 5 for Figure 3 Schematic diagram of the structure of the cover unit shown. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the cap hanging device with forward and reverse cap rubbing function comprises a bracket 1 installed at the entrance of the capping machine, on which a cap pressing unit and a cap rubbing unit are sequentially arranged along the direction in which the bottle pusher sends bottles to the capping machine, and the structure of the cap pressing unit comprises: a cap feeding slide 2 installed on the bracket 1 and connected with the cap discharging slide of the cap sorter and arranged obliquely downward, and an elastic positioning cap blocking component 3 is arranged at the outlet of the cap feeding slide 2, and the elastic positioning cap blocking component 3 can make the bottle cap 4 arranged in the front of the cap feeding slide 2 keep the front inclined downward. The bottle 5 conveyed by the bottle pusher can hang the bottle cap 4 on the mouth of the bottle 5 when passing through the outlet of the cap feeding slideway 2; the structure of the cap rubbing unit includes: a horizontal fixed plate 6 is installed on the bracket 1 above the cap feeding slideway 2, and a cap pressing plate 7 is arranged below the fixed plate 6. The cap pressing plate 7 is hung below the fixed plate 6 through an elastic suspension component 8. The elastic suspension component 8 makes the cap pressing plate 7 always have a tendency to move downward relative to the fixed plate 6 and does not prevent the cap pressing plate 7 from moving upward relative to the fixed plate 6 when an external force is applied. Two left and right arc guide plates 9 and right arc guide plates 10 are arranged below the capping plate 7 and are spaced apart from each other. The left and right arc guide plates 9 and 10 are connected to the bottom of the capping plate 7 through an elastic bottle protection connection assembly 11. The left and right arc guide plates 9 and 10 form a capping passage 12 together with the capping plate 7. In the capping passage 12, a reverse capping strip 13 for contacting the bottle cap 4 buckled on the bottle mouth of the bottle 5 to make the bottle cap 4 rotate in the opposite direction and a reverse capping strip 13 for contacting the bottle cap 4 buckled on the bottle mouth of the bottle 5 to make the bottle cap rotate in the opposite direction are arranged in sequence along the bottle feeding direction. The positive capping strip 14 rotates in the positive direction, and a climbing plate 15 is arranged just below the capping passage 12. The climbing plate 15 is installed on the bottom support plate 16 of the bottle moving machine. The upper surface of the climbing plate 15 is an inclined plane that gradually tilts upward along the bottle feeding direction. The climbing plate 15 enables the bottle 5 with the bottle cap 4 buckled thereon to move upward against the capping pressing plate 7 during the process of passing through the capping passage, so that the capping pressing plate 7 can always press down the bottle cap 4 during the process of the reverse capping strip 13 and the positive capping strip 14 in the capping passage performing the capping operation on the bottle cap 4 buckled thereon.

[0019] In this embodiment, the structure of the elastic positioning cover blocking assembly 3 includes: two cover blocking claw pieces 31, the two cover blocking claw pieces 31 are distributed on the left and right sides of the cover inlet slide 2, the rear end of each cover blocking claw piece 31 is hinged to the corresponding side outer wall of the cover inlet slide 2 through a pin shaft 32, the front end of each cover blocking claw piece 31 extends forward to the front of the outlet of the cover inlet slide 2, and a first tension spring 33 is connected between the two cover blocking claw pieces 31. The first tension spring 33 makes the front ends of the two cover blocking claw pieces 31 always have a tendency to move closer to each other, so that the front ends of the two cover blocking claw pieces 31 can be positioned in a left-right relative shape to block the bottle caps 4 moving out of the cover inlet slide 2, so that the bottle caps 4 arranged at the front in the cover inlet slide 2 can keep the front part tilted downward and extend out of the outlet of the cover inlet slide 2; the above-mentioned elastic positioning cover blocking assembly has a simple structure, is easy to install and maintain, and can ensure that the bottle caps are driven into the cover inlet slide 2 one by one;

[0020] In this embodiment, the structure of the elastic suspension assembly 8 is as follows: a plurality of mounting holes are provided on the fixed plate 6, a plurality of vertical shafts 81 are vertically installed on the top of the gland plate 7, the vertical shafts 81 on the gland plate 7 correspond to the mounting holes on the fixed plate 6 one by one, each vertical shaft 81 on the gland plate 7 passes through the corresponding mounting hole upward and then is fitted with an elastic retaining ring 82, the gland plate 7 is hung under the fixed plate 6 through each elastic retaining ring 82 and each vertical shaft 81, a compression spring 83 is provided between the fixed plate 6 and the gland plate 7, and the compression spring 83 makes the gland plate 7 always have a tendency to move downward relative to the fixed plate 6; the above-mentioned elastic suspension assembly 8 has a simple structure and is easy to install and maintain;

[0021] In the present embodiment, each mounting hole on the fixing plate 6 is an internal threaded hole, and a screw 84 that can move up and down along the mounting hole is threadedly connected in each mounting hole of the fixing plate 6. The upper end of each screw 84 extends upward from the fixing plate 6 through the corresponding mounting hole and is threadedly connected with an upper tightening nut 85. The lower end of each screw 84 extends downward from the fixing plate 6 through the corresponding mounting hole and is threadedly connected with a lower tightening nut 86. The upper tightening nut 85 and the lower tightening nut 86 can be positioned and fixed on the fixing plate 6 in an upper and lower relative state. A circle of positioning bosses 87 protruding outward from the outer wall of the screw 84 is provided at the lower end of each screw 84. A through hole that passes through the screw 84 up and down and can allow the corresponding vertical axis 81 to pass through is provided in each screw 84. Each vertical axis 81 on the pressure cover plate 7 After the corresponding screw rod 84 is passed upward through the through hole of the corresponding screw rod 84, the elastic retaining ring 82 is installed. Under the self-weight of the cover plate 7, the cover plate 7 will move downward until the elastic retaining ring 82 on each vertical shaft 81 presses downward on the upper end surface of the corresponding screw rod 84. The cover plate 7 is hung below the fixed plate 6 through the elastic retaining ring 82 and each vertical shaft 81 in cooperation with each corresponding screw rod 84. A compression spring 83 is sleeved on the outside of each vertical shaft 81. The upper end of the compression spring 83 presses upward against the positioning convex shoulder 87 of the corresponding screw rod 84, and the lower end presses downward against the cover plate 7. The compression spring 83 makes the cover plate 7 always have a tendency to move downward relative to the fixed plate 6. The function of the above structural design is: not only can the cover plate be easily disassembled and assembled, but also the upper and lower positions of the cover plate 7 can be finely adjusted by rotating the screw rod 84 upward or downward;

[0022] In this embodiment, the specific installation structure of the reverse cover rubbing strip 13 in the cover rubbing channel 12 is as follows: a reverse cover rubbing strip mounting block 17 is installed on the top of the left arc-shaped guide plate 9, and the reverse cover rubbing strip 13 is installed on the reverse cover rubbing strip mounting block 17, and the reverse cover rubbing strip 13 is located at the top rear section of the left arc-shaped guide plate 9 close to the cover buckle unit; the specific installation structure of the forward cover rubbing strip 14 in the cover rubbing channel 12 is as follows: a forward cover rubbing strip mounting block 18 is installed on the top of the right arc-shaped guide plate 10, and the forward cover rubbing strip 14 is installed on the forward cover rubbing strip mounting block 18, and the forward cover rubbing strip 14 is located at the top front section of the right arc-shaped guide plate 10 close to the cover buckle unit;

[0023] In this embodiment, the structure of the elastic bottle protection connection component 11 includes: a rear fixed block 111 is fixed on the top of the rear end of the pressure cover plate 7 close to the buckle cover unit, and the left and right ends of the rear fixed block 111 extend out of the pressure cover plate 7 to the left and right sides respectively, and a front fixed block 112 and a front movable block 113 arranged opposite to each other are arranged on the top of the front end of the pressure cover plate 7 away from the buckle cover unit. The front fixed block 112 is fixed to the top of the front end of the pressure cover plate 7, and the front movable block 113 is movably arranged at the top of the front end of the pressure cover plate 7. The right end of the front fixed block 112 The pressure cover plate 7 extends to the right, and the left end of the front movable block 113 extends to the left; a right rear connecting vertical shaft 114 is fixed to the rear end of the right arc-shaped guide plate 10, and a right front connecting vertical shaft 115 is fixed to the front end; the front end of the right arc-shaped guide plate 10 is fixedly connected to the right end of the front fixed block 112 through the right front connecting vertical shaft 115, and the rear end of the right arc-shaped guide plate 10 is fixedly connected to the right end of the rear fixed block 111 through the right rear connecting vertical shaft 114, so that the right arc-shaped guide plate 10 is connected and fixed to the pressure cover plate 7 as a whole; the left arc-shaped guide plate 9 The rear end of the left curved guide plate 9 is fixed with a left rear connecting vertical shaft 116, and the front end is fixed with a left front connecting vertical shaft 117. The rear end of the left curved guide plate 9 is hinged to the left end of the front fixed block 112 through the left rear connecting vertical shaft 116, and the front end of the left curved guide plate 9 is fixedly connected to the left end of the front movable block 113 through the left front connecting vertical shaft 117, so that the left curved guide plate 9 can be relatively rotated in the horizontal direction to approach or move away from the right curved guide plate 10. A second tension spring 118 is connected between the front movable block 113 and the front fixed block 112. The second tension spring 118 makes The left arc guide plate 9 always has a tendency to approach the right arc guide plate 10; the function of the elastic bottle protection connection assembly is to make the left arc guide plate 9 and the right arc guide plate 10 elastically connected; due to the difference in the production of bottles, some bottle necks are not perfect circles, and after the left arc guide plate 9 and the right arc guide plate 10 are elastically connected, the distance between the left arc guide plate 9 and the right arc guide plate 10 can be automatically adjusted with the change of the diameter of the bottle neck, so as to avoid the bottle being stuck when passing through the capping channel, thereby improving the stability of use;

[0024] In this embodiment, a magnetic block 19 is installed on the capping plate 7 at the entrance of the reverse capping strip 13; the function of the magnetic block 19 is to slightly lift the front end of the bottle cap 4 before the bottle cap 4 is reversely capped by the reverse capping strip 13, which is conducive to preventing the bottle cap from being stuck and further improving the stability of use;

[0025] The working principle of the present invention is as follows:

[0026] The bottle caps outputted from the cap sorter will be arranged in sequence and enter the cap feeding slideway 2 of the cap buckling unit. The bottle cap 4 in the front of the cap feeding slideway 2 will be blocked by the two cap blocking claws 31 of the elastic positioning cap blocking assembly 3, so that it will temporarily stay at the exit of the cap feeding slideway 2 with its front part tilted downward and extended out of the exit of the cap feeding slideway 2, waiting for the bottle to pass through the cap buckling unit and buckle the bottle cap 4 on the bottle mouth;

[0027] The bottle pusher continuously sends the filled bottles 5 on the bottom support plate 16 to the capping machine along the outer arc plate in sequence through the push wheel. Before the bottles 5 enter the capping machine, they first pass through the capping unit and the cap rubbing unit in sequence. When the bottles 5 pass through the capping unit, the bottles 5 are hung on and taken out of the capping unit. The bottle caps 4 at this time are tilted forward and extend downward from the exit of the cap feeding slideway 2 and stay at the exit of the cap feeding slideway.

[0028] The bottle 5 with the bottle cap 4 is driven by the bottle pusher and continues to rotate along the climbing plate 15 to pass through the capping unit. In the process of the bottle 5 passing through the capping unit, the bottle cap 4 and the neck of the bottle will move along the capping passage 12. Since the upper end surface of the climbing plate 15 is a flat end surface higher than the bottom support plate 16, during the whole process of the bottle 5 passing through the capping passage 12 along the flat end surface of the climbing plate 15, the bottle 6 will be lifted up as a whole to make the bottle cap 4 press upward against the capping plate 7. The capping plate 7 can always press the bottle cap 4 downward under the elastic force of the compression spring 83 during the whole process of the bottle 5 passing through the capping passage 12, so as to prevent the bottle cap 4 from falling off the bottle mouth during the capping process by the capping unit.

[0029] When the mouth of the bottle 5 with the bottle cap 4 hanging thereon passes through the capping passage 12 of the capping unit, the bottle cap 4 will first pass through and contact the reverse capping strip 13 of the capping unit. In the process of the bottle cap 4 passing through and contacting the reverse capping strip 13, the bottle cap 4 will be subjected to the friction force of the reverse capping strip 13 and will make a short reverse rotation, so that the thread buckle point of the bottle cap can be completely staggered with the thread entrance of the bottle mouth of the bottle 5, so that the bottle cap can be accurately sleeved on the bottle mouth without being damaged; then the bottle cap 4 will pass through and contact the forward capping strip 14 of the capping unit again. In the process of the bottle cap 4 passing through and contacting the forward capping strip 14, the bottle cap 4 will be subjected to the friction force of the forward capping strip 14 and will make a short forward rotation, so that the bottle cap 4 is slightly tightened on the bottle mouth of the bottle 5, completing the pre-tightening operation of the bottle cap 4; then the bottle moving machine will send the bottle after pre-tightening to the capping machine for tightening, thereby achieving higher capping quality requirements.

[0030] The advantages of the present invention are: (1) simple structure, purely mechanical mechanism, easy to manufacture, install and maintain; (2) simple structure of the capping unit, which can make the bottle cap hang on the bottle mouth accurately and quickly; (3) before the bottle enters the capping machine, the bottle cap is first reversely capped by the reverse capping strip in the capping unit, so that the threaded buckle point of the bottle cap and the threaded entrance of the bottle mouth are staggered, so that the bottle cap is accurately covered on the bottle mouth without being damaged, and then the bottle cap is forwardly capped by the forward capping strip, so that the bottle cap is slightly pre-tightened on the bottle mouth, thereby achieving higher capping quality requirements; (3) the forward capping strip and the reverse capping strip are easy to replace, the cost is relatively low, and the use cost is low.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A cap hanging device with forward and reverse cap rubbing function, characterized in that: The invention comprises a bracket installed at the entrance of the capping machine, on which a capping unit and a cap rubbing unit are sequentially arranged along the direction in which the bottle pusher machine sends bottles to the capping machine, the structure of the capping unit comprises: a cap feeding slideway installed on the bracket, which is connected with the cap discharging slideway of the cap sorter and is arranged obliquely downward, and an elastic positioning cap blocking assembly is arranged at the outlet of the cap feeding slideway, the elastic positioning cap blocking assembly can make the bottle caps arranged at the front of the cap feeding slideway keep the front part obliquely extending downward from the outlet of the cap feeding slideway, so that the bottle mouth can hang the bottle cap when the bottle conveyed by the bottle pusher machine passes through the outlet of the cap feeding slideway; the structure of the cap rubbing unit comprises: a horizontal fixing plate is installed on the bracket above the cap feeding slideway, a cap pressing plate is arranged below the fixing plate, the cap pressing plate is hung below the fixing plate through an elastic hanging assembly, and the elastic hanging assembly makes the cap pressing plate always have a tendency to move downward relative to the fixing plate and does not hinder the cap pressing plate from being affected by external When force acts, it can move up relatively to the fixed plate; two left and right arc-shaped guide plates spaced apart are arranged below the capping plate, and the left and right arc-shaped guide plates are connected to the bottom of the capping plate through an elastic bottle protection connecting assembly; the left and right arc-shaped guide plates and the capping plate jointly form a cap rubbing channel; in the cap rubbing channel, reverse cap rubbing strips for contacting the bottle cap buckled on the bottle mouth to make the bottle cap rotate in the reverse direction and forward cap rubbing strips for contacting the bottle cap buckled on the bottle mouth to make the bottle cap rotate in the forward direction are arranged in sequence along the bottle feeding direction; a climbing plate is arranged directly below the cap rubbing channel and is mounted on the bottom plate of the bottle pushing machine; the climbing plate enables the bottle buckled with the bottle cap to move up against the capping plate in the process of passing through the cap rubbing channel, so that the capping plate can always press the bottle cap down in the process of the reverse cap rubbing strips and the forward cap rubbing strips in the cap rubbing channel rubbing the bottle cap buckled on the bottle.

2. The cap hanging device with forward and reverse cap rubbing function according to claim 1, characterized in that: The structure of the elastic positioning cover blocking assembly includes: two cover blocking claws, the two cover blocking claws are distributed on the left and right sides of the cover entry slide, the rear end of each cover blocking claw is hingedly connected to the corresponding side outer wall of the cover entry slide through a pin shaft, the front end of each cover blocking claw extends forward to the front of the outlet of the cover entry slide, and a first tension spring is connected between the two cover blocking claws. The first tension spring makes the front ends of the two cover blocking claws always have a tendency to move closer to each other, so that the front ends of the two cover blocking claws can be positioned in a left-right relative state to block the bottle caps moving out of the cover entry slide, so that the bottle caps arranged at the front of the cover entry slide can keep the front part tilted downward and extend out of the outlet of the cover entry slide.

3. The cap hanging device with forward and reverse cap rubbing function according to claim 1, characterized in that: The structure of the elastic suspension assembly is as follows: a plurality of mounting holes are arranged on the fixed plate, a plurality of vertical shafts are vertically installed on the top of the pressure cover plate, the vertical shafts on the pressure cover plate correspond one to one with the mounting holes on the fixed plate, each vertical shaft on the pressure cover plate passes through the corresponding mounting hole upward and is fitted with an elastic retaining ring after passing through the fixed plate, the pressure cover plate is hung under the fixed plate through the elastic retaining rings and the vertical shafts, a compression spring is arranged between the fixed plate and the pressure cover plate, and the compression spring makes the pressure cover plate always have a tendency to move downward relative to the fixed plate.

4. The cap hanging device with forward and reverse cap rubbing function according to claim 3, characterized in that: Each mounting hole on the fixing plate is an internal threaded hole. A screw rod that can move up and down along the mounting hole is threadedly connected in each mounting hole of the fixing plate. The upper end of each screw rod extends upward through the corresponding mounting hole and is threadedly connected with an upper tightening nut. The lower end of each screw rod extends downward through the corresponding mounting hole and is threadedly connected with a lower tightening nut. The upper tightening nut and the lower tightening nut can be relative to each other to limit and fix the corresponding screw rod on the fixing plate. A circle protruding outward from the screw rod is provided at the lower end of each screw rod. The positioning boss of the outer wall is provided with a through hole that passes through the screw up and down and can allow the corresponding vertical axis to pass through. Each vertical axis on the pressure cover plate passes through the corresponding screw upward through the through hole of the screw and then is fitted with an elastic retaining ring. The pressure cover plate is hung under the fixed plate by cooperating with the corresponding screw through the elastic retaining rings and the vertical axes. A compression spring is sleeved on the outside of each vertical axis. The upper end of the compression spring presses upward against the positioning boss of the corresponding screw and the lower end presses downward against the pressure cover plate. The compression spring makes the pressure cover plate always have a tendency to move downward relative to the fixed plate.

5. The cap hanging device with forward and reverse cap rubbing function according to claim 1, characterized in that: The specific installation structure of the reverse cover rubbing strip in the cover rubbing channel is as follows: a reverse cover rubbing strip mounting block is installed on the top of the left arc-shaped guide plate, the reverse cover rubbing strip is installed on the reverse cover rubbing strip mounting block, and the reverse cover rubbing strip is located at the rear section of the top of the left arc-shaped guide plate close to the cover buckle unit; the specific installation structure of the forward cover rubbing strip in the cover rubbing channel is as follows: a forward cover rubbing strip mounting block is installed on the top of the right arc-shaped guide plate, the forward cover rubbing strip is installed on the forward cover rubbing strip mounting block, and the forward cover rubbing strip is located at the front section of the top of the right arc-shaped guide plate close to the cover buckle unit.

6. The cap hanging device with forward and reverse cap rubbing function according to claim 5, characterized in that: The structure of the elastic bottle protection connection assembly includes: a rear fixed block is fixed on the top of the rear end of the pressure cover plate close to the buckle cover unit, and the left and right ends of the rear fixed block extend out of the pressure cover plate to the left and right sides respectively; a front fixed block and a front movable block arranged opposite to each other are provided on the top of the front end of the pressure cover plate away from the buckle cover unit, the front fixed block is fixed to the top of the front end of the pressure cover plate, the front movable block is movably arranged at the top of the front end of the pressure cover plate, the right end of the front fixed block extends out of the pressure cover plate to the right, and the left end of the front movable block extends out of the pressure cover plate to the left; a right rear connecting vertical axis is fixed to the rear end of the right arc-shaped guide plate, and a right front connecting vertical axis is fixed to the front end; the front end of the right arc-shaped guide plate is fixedly connected to the front fixed block through the right front connecting vertical axis The right end of the left arc guide plate and the rear end of the right arc guide plate are fixedly connected to the right end of the rear fixed block through the right rear connecting vertical axis, so that the right arc guide plate is connected and fixed to the pressure cover plate as a whole; the left rear connecting vertical axis is fixed to the rear end of the left arc guide plate, and the left front connecting vertical axis is fixed to the front end; the rear end of the left arc guide plate is hinged to the left end of the front fixed block through the left rear connecting vertical axis, and the front end of the left arc guide plate is fixedly connected to the left end of the front movable block through the left front connecting vertical axis, so that the left arc guide plate can rotate relatively in the horizontal direction to approach or move away from the right arc guide plate; a second tension spring is connected between the front movable block and the front fixed block, and the second tension spring makes the left arc guide plate always have a tendency to approach the right arc guide plate.

7. A cap hanging device with forward and reverse cap rubbing function according to any one of claims 1 to 5, characterized in that: A magnetic block is installed on the cover pressing plate at the entrance position of the reverse cover rubbing strip.

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