Stepping continuous conversion chain device and bottle conveying device of blowing-filling-screwing all-in-one machine

Abstract

The utility model discloses a stepping continuous conversion chain device and a bottle conveying device of a blowing-filling-screwing all-in-one machine, the stepping continuous conversion chain device comprises a base, a stepping driving chain wheel, a stepping driven chain wheel, a continuous driving chain wheel, a continuous driven chain wheel, a circulating chain and a follow-up sliding chain wheel group are rotatably arranged on the base, the follow-up chain wheel set comprises a sliding support sliding linearly, and a first follow-up chain wheel and a second follow-up chain wheel are rotationally installed on the sliding support. One end of the circulating chain sequentially bypasses the stepping driven chain wheel, the stepping driving chain wheel, the first follow-up chain wheel, the continuous driving chain wheel, the continuous driven chain wheel and the second follow-up chain wheel and then is fixed to the other end of the circulating chain to form a closed chain, and the rotating speed of the stepping driving chain wheel is larger than that of the continuous driving chain wheel. The bottle conveying device of the blowing, filling and rotating all-in-one machine adopts the chain device, conversion and connection of stepping operation and continuous operation are achieved, and connection and conveying between a bottle blowing machine and a filling machine are met.

Description

Technical Field

[0001] The utility model relates to the technical field of a blowing, filling and capping integrated machine, in particular to a step-by-step continuous conversion chain device and a bottle conveying device of the blowing, filling and capping integrated machine. Background Art

[0002] In recent years, China's beverage industry has developed rapidly, and has driven the rapid development of beverage machinery. Among them, bottle blowing machines and filling machines are commonly used machines in beverage production lines in beverage machinery factories. The connection between bottle blowing machines and filling machines is one of the important factors affecting the output and stability of beverage production lines. The blow-fill-cap integrated machine is to connect bottle blowing machines, filling machines and capping machines into one. Since the bottle blowing machine blows the preforms into plastic bottles, the bottle blowing machine generally needs to blow multiple preforms at one time to ensure sufficient output, while the filling machine needs to continuously fill the plastic bottles with liquid. Similarly, the capping machine also continuously caps the plastic bottles. Therefore, the plastic bottles blown by the bottle blowing machine need to be conveyed to the filling machine through the conveying device to ensure the continuous filling of the filling machine. The traditional connection method is to connect the bottle blowing machine and the filling machine through the air conveying channel device. The bottles blown by the bottle blowing machine are sent to the dial wheel of the filling machine through the wind force of the air conveying track, thereby realizing the automatic line production from bottle blowing to canning. For example, the utility model patent application with publication number CN110774568A discloses a blowing, filling, rotating and storing bottle air duct mechanism, which uses an air duct component to connect the bottle blowing machine and the filling machine. However, the above-mentioned air delivery channel transportation method has the following disadvantages:

[0003] 1. The floor space is very large, and sufficient air duct components are required to ensure that there is enough storage of plastic bottles to ensure the filling volume of the filling machine;

[0004] 2. Bottle jams may occur because the plastic bottles are pushed by wind in the air conveying track, the surface of the bottles is easily scratched by friction, and the bottles are not running smoothly;

[0005] 3. Using wind power to push the bottle can easily pollute the inner cavity of the bottle. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a step-to-continuous conversion chain device, which can realize the conversion connection between step-by-step operation and continuous operation, so that the overall volume is smaller.

[0007] The second technical problem to be solved by the utility model is to provide a bottle feeding and conveying device for a blowing, filling and capping machine, which uses the above-mentioned step-by-step continuous conversion chain device, can meet the connection and conveying between the bottle blowing machine and the filling machine, ensure the conveying accuracy while reducing the volume.

[0008] In order to solve the above-mentioned first technical problem, the technical solution of the utility model is: a step-by-step continuous conversion chain device, including a base, on which a step-by-step driving sprocket, a step-by-step driven sprocket, a continuous driving sprocket, a continuous driven sprocket and a circulating chain are rotatably installed, the centers of the step-by-step driving sprocket and the step-by-step driven sprocket are connected to form a first center line, the centers of the continuous driving sprocket and the continuous driven sprocket are connected to form a second center line, the chain device also includes a follower sliding sprocket group, the follower sliding sprocket group is located between the first center line and the second center line, the follower sliding sprocket group includes a linear sliding sprocket installed on the base The sliding bracket on the seat slides away from the stepping driving sprocket and approaches the stepping driven sprocket, or slides close to the stepping driving sprocket and away from the stepping driven sprocket, and the first follower sprocket and the second follower sprocket are rotatably mounted on the sliding bracket, and one end of the circulating chain successively passes around the stepping driven sprocket, the stepping driving sprocket, the first follower sprocket, the continuous driving sprocket, the continuous driven sprocket, and the second follower sprocket and is fixed to the other end of the circulating chain to form a closed chain, and the circulating chain forms a U shape at the first follower sprocket and the second follower sprocket, and the rotation speed of the stepping driving sprocket is greater than the rotation speed of the continuous driving sprocket.

[0009] As a preferred solution, a guide bracket is fixedly provided on the base, a linear guide rail is provided on the guide bracket, and the sliding bracket is slidably installed on the linear guide rail.

[0010] As a preferred solution, the sliding bracket includes a first wheel frame and a second wheel frame, the first wheel frame and the second wheel frame are both slidably mounted on the linear guide rail, and the first wheel frame and the second wheel frame are connected by a tension spring or a fixed connecting rod.

[0011] As a preferred solution, the first center line is parallel to the second center line, and the sliding direction of the sliding bracket is parallel to the first center line.

[0012] After adopting the above technical scheme, the effect of the utility model is as follows: since the step-by-step continuous conversion chain device includes a base, a step-by-step driving sprocket, a step-by-step driven sprocket, a continuous driving sprocket, a continuous driven sprocket and a circulating chain are rotatably installed on the base, the centers of the step-by-step driving sprocket and the step-by-step driven sprocket are connected to form a first center line, the centers of the continuous driving sprocket and the continuous driven sprocket are connected to form a second center line, the chain device also includes a follower sliding sprocket group, the follower sliding sprocket group is located between the first center line and the second center line, and the follower sliding sprocket group includes a linear sliding sprocket The sprocket wheel is annularly fixed to the sliding bracket on the base, and the sliding bracket slides away from the stepping driving sprocket and approaches the stepping driven sprocket, or slides close to the stepping driving sprocket and away from the stepping driven sprocket. The first driven sprocket and the second driven sprocket are rotatably installed on the sliding bracket, and one end of the circulating chain successively passes through the stepping driven sprocket, the stepping driving sprocket, the first driven sprocket, the continuous driving sprocket, the continuous driven sprocket, and the second driven sprocket, and is fixed to the other end of the circulating chain to form a closed chain. The circulating chain forms a U shape at the first driven sprocket and the second driven sprocket. The rotation speed is greater than the rotation speed of the continuous driving sprocket. At the same time, the continuous driving sprocket can move at a constant speed. The continuous driving sprocket and the continuous driven sprocket are driven to rotate continuously. At this time, if the stepping driving sprocket and the stepping driven sprocket both stop rotating, the follower sliding sprocket group and the chain segment between the continuous driving sprocket and the continuous driven sprocket can form an approximately closed chain. That is to say, the follower sliding sprocket group will be driven by the chain on the continuous driving sprocket to slide. When sliding to a certain position, the stepping driving sprocket rotates, and the rotation speed will be greater than the rotation speed of the continuous driving sprocket. This speed difference will cause the stepping driving sprocket and the stepping driven sprocket to pull the circulating chain to make the follower sliding sprocket group slide in the opposite direction. During the sliding process, the length of the U-shaped chain segment between the first follower sprocket, the continuous driving sprocket and the stepping driving sprocket becomes longer, so that when the subsequent stepping driving sprocket stops, there will be enough chain segments for the continuous driving sprocket to run. In summary, the above-mentioned chain device realizes the conversion from stepping conveying to continuous conveying, thereby meeting the requirements of the blowing, filling and capping machine, and can continuously deliver the plastic bottles blown out at intervals into the filling machine.

[0013] Furthermore, since the sliding bracket includes a first wheel frame and a second wheel frame, the first wheel frame and the second wheel frame are both slidably installed on the linear guide rail, and the first wheel frame and the second wheel frame are connected by a tension spring or a fixed connecting rod, the first wheel frame and the second wheel frame can be fixed by a fixed connecting rod so that they can slide together. If a tension spring is used for connection, the tension force of the tension spring can also provide a moving chain tensioning force, and at the same time, the first wheel frame and the second wheel frame can also slide together.

[0014] Furthermore, since the first center line is parallel to the second center line, the sliding direction of the sliding bracket is parallel to the first center line. Such an arrangement is more reasonable and occupies a smaller area.

[0015] In order to solve the above-mentioned second technical problem, the technical solution of the utility model is: a bottle feeding and conveying device of a blowing, filling and capping machine, the bottle feeding and conveying device comprises a frame, on which the step-continuous conversion chain device is installed, wherein a stepping motor for driving the stepping driving sprocket to rotate intermittently and a continuous driving motor for driving the continuous driving sprocket to rotate are fixed on the base, a first lifting and lowering driving cam is concentrically fixed below the stepping driven sprocket, a second lifting and lowering driving cam is concentrically fixed below the continuous driving sprocket, and a bottle discharging tooth is also concentrically installed below the continuous driving sprocket, a first rising curved surface is arranged on the first lifting and lowering driving cam according to the rotation direction, a second rising curved surface is arranged on the second lifting and lowering driving cam according to the rotation direction, and a plurality of loading heads are arranged at equal intervals on the circulating chain. Each loading head includes a connecting rod connected to the chain shaft of the endless chain and a loading head body mounted on the connecting rod for lifting; the loading head body is provided with an annular flange adapted to the first rising curved surface and the second rising curved surface; a cache hanging rail is fixed on the frame or the base; the cache hanging rail is provided with a linear hanging slot for facilitating the entry of the bottleneck of the plastic bottle; the linear hanging slot is located at the loading station; the base is also provided with a loading drive device for driving the loading head body to descend and insert into the mouth of the plastic bottle at the loading station.

[0016] As a preferred solution, the loading drive device includes a driving bracket fixed on the base, a lifting seat is vertically slidably mounted on the driving bracket, the lifting seat is driven by a lifting power device, a driving bar is horizontally slidably mounted on the lifting seat, the driving bar is driven by a horizontal driving power device, and the driving bar is provided with an open driving groove which is sleeved on the annular flange from the side.

[0017] As a preferred solution, an auxiliary support structure is also provided on the drive bracket, which auxiliary supports the annular flange when the open drive groove is not sleeved on the annular flange and releases the annular flange when the open drive groove is sleeved on the annular flange.

[0018] As a preferred solution, the auxiliary support structure includes an auxiliary support bar horizontally slidably installed on the driving bracket, the auxiliary support bar is driven to slide horizontally by an auxiliary horizontal power device, and the auxiliary support bar is provided with an open support groove which is sleeved on the annular flange, and the open support groove and the open driving groove are arranged opposite to each other on both sides of the annular flange.

[0019] As a preferred solution, the cache suspension rail is fixed on the driving bracket, and the cache suspension rail includes a fixed track plate and a movable track plate, the fixed track plate is fixed on the driving bracket, and the movable track plate is horizontally slidably installed on the driving bracket and driven by a rejection linear power device.

[0020] As a preferred solution, the driving bracket is also provided with a chain linear restraint track for facilitating the entry of the circulating chain, and the chain linear restraint track corresponds to the position of the linear suspension slot.

[0021] After adopting the above technical scheme, the effect of the utility model is as follows: due to a bottle feeding and conveying device of a blowing, filling and capping integrated machine, the bottle feeding and conveying device includes a frame, and the step-continuous conversion chain device is installed on the frame, wherein a stepping motor for driving the stepping driving sprocket to rotate intermittently and a continuous driving motor for driving the continuous driving sprocket to rotate are fixed on the base, a first lifting driving cam is concentrically fixed below the stepping driven sprocket, a second lifting driving cam is concentrically fixed below the continuous driving sprocket, and a bottle discharging tooth is also concentrically installed below the continuous driving sprocket, a first rising curved surface is arranged on the first lifting driving cam according to the rotation direction, a second rising curved surface is arranged on the second lifting driving cam according to the rotation direction, and a plurality of loading heads are arranged at equal intervals on the circulating chain, Each loading head includes a connecting rod connected to the chain shaft of the circulating chain and a loading head body which is lifted and installed on the connecting rod, and the loading head body is provided with an annular flange which is adapted to the first rising curved surface and the second rising curved surface. A cache hanging rail is fixed on the frame or the base, and the cache hanging rail is provided with a linear hanging slot for facilitating the entry of the neck of the plastic bottle. The linear hanging slot is located at the loading station, and the base is also provided with a loading driving device which drives the loading head body to descend and insert into the mouth of the plastic bottle at the loading station. Therefore, after the bottle blowing machine blows several plastic bottles at a time, they will be sent to the cache hanging rail at equal intervals, and the necks of the plastic bottles will be hung on the linear hanging slots, and the circulating chain will drive the loading head to circulate, wherein the first rising curved surface will push the annular flange during the operation, thereby causing the loading head body to rise, and when the loading head body corresponds one by one to the bottle mouth of the plastic bottle below, the stepping active chain The wheel stops running. At this time, the continuous active sprocket can still continue to run at a constant speed without hindering the filling of the filling machine. The loading drive device drives the loading head body to descend and insert it into the bottle mouth, so that the plastic bottle is fixed by the loading head body, and then the stepping active sprocket runs again to send out the loading head loaded with the plastic bottle and send the empty loading head body into the loading station. When the loading head loaded with the plastic bottle is driven by the circulating chain to the continuous active sprocket, the plastic bottle will be connected with the bottle inlet teeth of the filling machine due to the action of the bottle outgoing teeth. At the same time, the annular flange on the loading head body will cooperate with the second rising curved surface, so as to pull the loading head body out of the bottle mouth, thus realizing the output of the plastic bottle. The bottle feeding conveyor can meet the connection requirements of the stepping output of the bottle blowing machine and the continuous bottle feeding of the filling machine, and will not cause damage to the bottle body during transportation, and occupies a smaller area, thereby making the overall volume of the entire blowing, filling and capping machine smaller.

[0022] Furthermore, since the loading drive device includes a driving bracket fixed on the base, a lifting seat is vertically slidably installed on the driving bracket, and the lifting seat is driven by a lifting power device, a driving bar is horizontally slidably installed on the lifting seat, and the driving bar is driven by the horizontal driving power device, and the driving bar is provided with an open driving groove which is sleeved on the annular flange from the side, the driving bar can be used to drive multiple loading head bodies to descend at one time to meet the loading requirements of multiple plastic bottles.

[0023] Since the driving bracket is also provided with an auxiliary supporting structure, the auxiliary supporting structure auxiliary supports the annular flange when the open driving groove is not sleeved on the annular flange and releases the annular flange when the open driving groove is sleeved on the annular flange. The auxiliary supporting structure can accelerate the conveying rhythm of the entire bottle blowing machine. When the driving bar drives the loading head body to descend, the auxiliary supporting structure is in a state of loosening the annular flange, which facilitates the descent of the loading head body. After the loading head body is descended, the driving bar needs to withdraw and return horizontally. During the horizontal withdrawal and return of the driving bar, the auxiliary supporting structure can be moved to be sleeved on the annular flange. In this way, when the stepping active sprocket drives the circulating chain to step and convey a certain distance, it can auxiliary support the contracted loading head body. In this way, the circulating chain can be conveyed during the horizontal retreat and rising and resetting of the driving bar, shortening the waiting time, accelerating the conveying rhythm, and thus improving the conveying efficiency.

[0024] Furthermore, since the cache suspension rail is fixed on the driving bracket, the cache suspension rail includes a fixed rail plate and a movable rail plate, the fixed rail plate is fixed on the driving bracket, and the movable rail plate is horizontally slidably installed on the driving bracket and is driven by a rejection linear power device. In this way, when there is a problem with the plastic bottle blown out by the bottle blowing machine, the rejection linear power device drives the movable rail plate to slide horizontally, thereby facilitating the falling and rejection of the defective plastic bottle.

[0025] Furthermore, since the driving bracket is also provided with a chain linear constraint track for facilitating the entry of the circulating chain, the chain linear constraint track corresponds to the position of the linear suspension slot. The chain linear constraint track can be used to further constrain the circulating chain, thereby ensuring that the loading head is more accurately positioned above the linear suspension slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a chain device according to an embodiment of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the chain device of the embodiment of the utility model when the stepping driving sprocket is stopped;

[0029] Figure 3 It is a structural schematic diagram of the stepping driving sprocket of the chain device of the embodiment of the utility model when it is started;

[0030] Figure 4 is a perspective view of a bottle conveying device;

[0031] Figure 5 yes Figure 4 A top view of

[0032] Figure 6 It is a partial enlarged schematic diagram of the loading drive device and the stepping driven sprocket;

[0033] Figure 7 It is a partial enlarged schematic diagram of the continuous driving sprocket;

[0034] In the accompanying drawings: 1, base; 2, step driven sprocket; 3, step driving sprocket; 4, continuous driving sprocket; 5, continuous driven sprocket; 6, first follower sprocket; 7, second follower sprocket; 8, guide bracket; 9, sliding bracket; 91, first wheel frame; 92, second wheel frame; 10, frame; 11, loading head; 111, connecting rod; 112, loading head body; 113, annular flange; 12, loading drive device; 121, drive bracket; 122, lifting seat; 123, drive bar; 124, drive Horizontal power device; 125, lifting power device; 13, auxiliary support structure; 131, auxiliary support bar; 132, auxiliary horizontal power device; 14, plastic bottle; 15, bottle inlet gear; 16, cache suspension track; 161, movable track plate; 162, fixed track plate; 163, rejection linear power device; 17, chain linear constraint track; 18, first lifting drive cam; 181, first rising surface; 19, second lifting drive cam; 191, second rising surface; 20, bottle outlet gear; 21, circulating chain. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below through specific embodiments.

[0036] like Figures 1 to 3As shown, a step-by-step continuous conversion chain device comprises a base 1, which can actually be a bottom plate for carrying the upper mechanism, and a step-by-step driving sprocket 3, a step-by-step driven sprocket 2, a continuous driving sprocket 4, a continuous driven sprocket 5 and a circulating chain 21 are rotatably mounted on the base 1, the centers of the step-by-step driving sprocket 3 and the step-by-step driven sprocket 2 are connected to form a first center line, and the centers of the continuous driving sprocket 4 and the continuous driven sprocket 5 are connected to form a second center line. In this embodiment, the step-by-step driving sprocket 3 and the continuous driving sprocket 2 are connected to form a second center line. The driven sprocket 4 is located on the same side, and the chain device also includes a follower sliding sprocket group, which is located between the first center line and the second center line. The follower sliding sprocket group includes a sliding bracket 9 installed on the base 1 in a linear sliding manner, and the sliding bracket 9 slides away from the stepping driving sprocket 3 and approaches the stepping driven sprocket 2 or slides close to the stepping driving sprocket 3 and away from the stepping driven sprocket 2. The first center line and the second center line are parallel, and the sliding direction of the sliding bracket 9 is parallel to the first center line. Of course, in this embodiment, the first center line and the second center line may not be parallel, and the conversion of the stepping conveying state to the continuous conveying state can also be realized.

[0037] The first follower sprocket 6 and the second follower sprocket 7 are rotatably mounted on the sliding bracket 9, and one end of the circulating chain 21 passes through the step driven sprocket 2, the step driving sprocket 3, the first follower sprocket 6, the continuous driving sprocket 4, the continuous driven sprocket 5, and the second follower sprocket 7 in sequence, and is fixed to the other end of the circulating chain 21 to form a closed chain. The circulating chain 21 forms a U shape at the first follower sprocket 6 and the second follower sprocket 7, and the rotation speed of the step driving sprocket 3 is greater than the rotation speed of the continuous driving sprocket 4. The U shape in this embodiment refers to the trajectory state of the circulating chain 21, and it is not necessarily a standard U shape state.

[0038] In this embodiment, a guide bracket 8 is fixedly provided on the base 1, a linear guide rail is provided on the guide bracket 8, the sliding bracket 9 is slidably installed on the linear guide rail, the linear guide rail adopts a guide rod structure, and the sliding bracket 9 includes a first wheel frame 91 and a second wheel frame 92, the first wheel frame 91 and the second wheel frame 92 are both slidably installed on the linear guide rail, and the first wheel frame 91 and the second wheel frame 92 are connected by a tension spring or a fixed connecting rod.

[0039] like Figure 2 As shown, Figure 2The stepping driving sprocket 3 and the stepping driven sprocket 2 in the drawing stop rotating. At this time, the chain section of the stepping driving sprocket 3 and the stepping driven sprocket 2 located at the bottom of the drawing is stopped, while the continuous driving sprocket 4 and the continuous driven sprocket 5 continue to operate. Since the sliding bracket 9 can slide, the sliding bracket 9 will move from the continuous driving sprocket 4 and the continuous driven sprocket 5 during their continuous operation. Figure 2 Towards Figure 3 The state changes, at this time, the sliding bracket 9 will move from position A to position B, and when the sliding bracket 9 moves to position B, the stepping driving sprocket 3 is started, and the rotation speed is greater than the rotation speed of the continuous driving sprocket 4, and a speed difference will be generated between the two, so that the stepping driving sprocket 3 will pull the chain segment below, and then pull the sliding bracket 9 from position B to position A through the stepping driven sprocket 2, and the continuous driving sprocket 4 and the continuous driven sprocket 5 are running all the time, so that the chain device realizes the transition from the stepping conveying state to the continuous conveying state.

[0040] like Figures 4 to 7 As shown, a bottle feeding and conveying device of a blowing, filling and capping machine is a linear integrated machine. The bottle feeding and conveying device includes a frame 10, on which the step-continuous conversion chain device is installed, wherein a stepping motor for driving the stepping driving sprocket 3 to rotate intermittently and a continuous driving motor for driving the continuous driving sprocket 4 to rotate are fixed to the base 1. Since the bottle feeding and conveying device needs to perform bottle feeding and conveying operations, all the sprockets are rotatably installed through a wheel axle with a relatively high height, so that there is enough space for hanging plastic bottles 14 between the circulating chain 21 and the base 1.

[0041] A first lifting drive cam 18 is concentrically fixed below the step driven sprocket 2, that is to say, the step driven sprocket 2 is rotatably mounted on the driven wheel shaft, and the driven wheel shaft is fixed on the base 1, and the first lifting drive cam 18 is fixed on the driven wheel shaft, and a second lifting drive cam 19 is concentrically fixed below the continuous driving sprocket 4, and because the continuous driving sprocket 4 needs to be connected to the continuous driving motor by transmission, the continuous driving sprocket 4 is directly fixed on the driving chain shaft, and the driving chain shaft is rotatably mounted on the base 1, and the continuous driving motor is located below the base 1 and is connected to the driving chain shaft by transmission; and the second lifting drive cam 19 is directly fixed to the base 1 through a fixing rod, and the second lifting drive cam 19 is sleeved on the driving chain shaft to complete the concentricity with the continuous driving sprocket 4;

[0042] A bottle discharging tooth 20 is also coaxially mounted below the continuous driving sprocket 4, and the bottle discharging tooth 20 is also directly fixed on the driving chain shaft and rotates with the driving chain shaft. Correspondingly, the bottle discharging tooth 20 cooperates with the bottle inlet tooth 15 of the filling machine to realize the transmission of the plastic bottle 14.

[0043] A first rising curved surface 181 is arranged on the first lifting driving cam 18 according to the rotation direction, and a second rising curved surface 191 is arranged on the second lifting driving cam 19 according to the rotation direction. A plurality of loading heads 11 are arranged on the circulating chain 21 at equal intervals, and each loading head 11 includes a connecting rod 111 connected to the chain shaft of the circulating chain 21 and a loading head body 112 which is lifted and installed on the connecting rod 111. An annular flange 113 which is adapted to the first rising curved surface 181 and the second rising curved surface 191 is arranged on the loading head body 112. When the loading head 11 is driven by the circulating chain 21, the annular flange 113 will cooperate with the first rising curved surface 181 to make the loading head body 112 slide upward and shrink. The main purpose is to facilitate the subsequent loading head body 112 to have a stroke of inserting downward into the bottle mouth. Similarly, when the annular flange 113 of the loading head body 112 cooperates with the second rising curved surface 191, the loading head body 112 will move upward and be pulled out from the bottle mouth.

[0044] A buffer suspension track 16 is fixed on the frame 10 or the base 1. The buffer suspension track 16 is provided with a linear suspension slot for the bottleneck of the plastic bottle 14 to enter. The linear suspension slot is located at the loading station. The plastic bottles 14 blown by the bottle blowing machine will be sent to the buffer suspension track 16 at equal intervals, waiting for the insertion and loading of the loading head body 112. The base 1 is also equipped with a loading drive device 12 that drives the loading head body 112 to descend and insert into the mouth of the plastic bottle 14 at the loading station.

[0045] In this embodiment, the loading drive device 12 comprises a driving bracket 121 fixed on the base 1, a lifting seat 122 is vertically slidably mounted on the driving bracket 121, the lifting seat 122 is driven by a lifting power device 125, a driving bar 123 is horizontally slidably mounted on the lifting seat 122, the driving bar 123 is driven by a driving horizontal power device 124, and an open driving groove is provided on the driving bar 123 which is sleeved on the annular flange 113 from the side, wherein the lifting power device 125 and the driving horizontal power device 124 are both cylinders. The driving bar 123 can be driven to lift and move horizontally, so that when the open driving groove is sleeved on the annular flange 113 of the loading head body 112, the loading head body 112 can be driven to move downward and sleeved in the bottle mouth of the plastic bottle 14 to complete the loading, wherein the structure of the loading head 11 is well known in the art. After the loading head body 112 is pressed down, the driving bar 123 needs to retreat horizontally and then rise to reset.

[0046] In order to improve the loading cycle and the conveying efficiency, the driving bracket 121 is also provided with an auxiliary support structure 13, which assists in supporting the annular flange 113 when the open driving groove is not sleeved on the annular flange 113 and releases the annular flange 113 when the open driving groove is sleeved on the annular flange 113. The auxiliary support structure 13 includes an auxiliary support bar 131 horizontally slidably mounted on the driving bracket 121, the auxiliary support bar 131 is driven to slide horizontally by an auxiliary horizontal power device 132, and the auxiliary support bar 131 is provided with an open support groove sleeved on the annular flange 113, and the open support groove is arranged on both sides of the annular flange 113 opposite to the open driving groove.

[0047] In this embodiment, the cache suspension track 16 is fixed on the driving bracket 121. The cache suspension track 16 includes a fixed track plate 162 and a movable track plate 161, wherein the fixed track plate 162 is fixed on the driving bracket 121, and the movable track plate 161 is horizontally slidably mounted on the driving bracket 121 and driven by a rejection linear power device 163.

[0048] The driving bracket 121 is also provided with a chain linear restraint track 17 for facilitating the entry of the circulating chain 21. The chain linear restraint track 17 corresponds to the position of the linear suspension slot. The chain linear restraint track 17 can restrain the circulating chain 21 to ensure that the loading head 11 on the circulating chain 21 can accurately correspond to the plastic bottle 14 below.

[0049] The gas circuit system, motor and other actuators, sprocket chain mentioned in this embodiment are all conventional technologies at present. The specific structure and principle of the cylinder, motor and other transmission mechanisms and other designs are disclosed in detail in the "Mechanical Design Manual Fifth Edition" printed in Beijing in April 2008, the fifth edition, the twenty-eighth edition, which belongs to the prior art and its structure is clear. The modern practical pneumatic technology, the third edition SMC training textbook published by the Machinery Industry Press on August 1, 2008, discloses the vacuum element, gas circuit and program control in detail, indicating that the gas circuit structure in this embodiment is also the existing technology, which is clear. The book "Motor Drive and Speed ​​Regulation" published by the Chemical Industry Press on July 1, 2015 also introduces the control of the motor and the travel switch in detail, so the circuit and gas circuit connection are clear. The above-mentioned embodiments are only descriptions of the preferred implementation of the utility model, and are not used as limitations on the scope of the utility model. On the basis of not departing from the design spirit of the utility model, various deformations and modifications made to the technical solution of the utility model should fall within the protection scope determined by the claims of the utility model.

Claims

1. A step-by-step continuous conversion chain device, comprising a base, characterized in that: A stepping driving sprocket, a stepping driven sprocket, a continuous driving sprocket, a continuous driven sprocket and a circulating chain are rotatably mounted on the base, the centers of the stepping driving sprocket and the stepping driven sprocket are connected to form a first center line, the centers of the continuous driving sprocket and the continuous driven sprocket are connected to form a second center line, the chain device also includes a follower sliding sprocket group, the follower sliding sprocket group is located between the first center line and the second center line, the follower sliding sprocket group includes a sliding bracket linearly slidably mounted on the base, the sliding bracket slides away from the stepping driving sprocket The sprocket is close to the stepping driven sprocket or slides close to the stepping driving sprocket and away from the stepping driven sprocket, and the first driven sprocket and the second driven sprocket are rotatably installed on the sliding bracket, and one end of the circulating chain passes through the stepping driven sprocket, the stepping driving sprocket, the first driven sprocket, the continuous driving sprocket, the continuous driven sprocket, and the second driven sprocket in sequence, and is fixed to the other end of the circulating chain to form a closed chain, and the circulating chain forms a U shape at the first driven sprocket and the second driven sprocket, and the rotation speed of the stepping driving sprocket is greater than the rotation speed of the continuous driving sprocket.

2. A step-by-step continuous conversion chain device as claimed in claim 1, characterized in that: A guide bracket is fixedly arranged on the base, a linear guide rail is arranged on the guide bracket, and the sliding bracket is slidably installed on the linear guide rail.

3. A step-by-step continuous conversion chain device as claimed in claim 2, characterized in that: The sliding bracket includes a first wheel frame and a second wheel frame, wherein the first wheel frame and the second wheel frame are both slidably mounted on the linear guide rail, and the first wheel frame and the second wheel frame are connected via a tension spring or a fixed connecting rod.

4. A step-by-step continuous conversion chain device as claimed in claim 1, characterized in that: The first center line is parallel to the second center line, and the sliding direction of the sliding bracket is parallel to the first center line.

5. A bottle conveying device for a blowing, filling and capping machine, characterized in that: The bottle conveying device comprises a frame, on which the step-by-step continuous conversion chain device as claimed in claim 1 is installed, wherein a stepping motor for driving the stepping driving sprocket to rotate intermittently and a continuous driving motor for driving the continuous driving sprocket to rotate are fixed on the base, a first lifting driving cam is concentrically fixed below the stepping driven sprocket, a second lifting driving cam is concentrically fixed below the continuous driving sprocket, and a bottle discharging tooth is also concentrically installed below the continuous driving sprocket, a first rising curved surface is arranged on the first lifting driving cam according to the rotation direction, a second rising curved surface is arranged on the second lifting driving cam according to the rotation direction, and a plurality of loading heads are arranged at equal intervals on the circulating chain. Each loading head includes a connecting rod connected to the chain shaft of the endless chain and a loading head body mounted on the connecting rod for lifting; the loading head body is provided with an annular flange adapted to the first rising curved surface and the second rising curved surface; a cache hanging rail is fixed on the frame or the base; the cache hanging rail is provided with a linear hanging slot for facilitating the entry of the bottleneck of the plastic bottle; the linear hanging slot is located at the loading station; the base is also provided with a loading drive device for driving the loading head body to descend and insert into the mouth of the plastic bottle at the loading station.

6. The bottle conveying device of the blowing, filling and capping machine according to claim 5, characterized in that: The loading drive device includes a driving bracket fixed on the base, a lifting seat is vertically slidably mounted on the driving bracket, the lifting seat is driven by a lifting power device, a driving bar is horizontally slidably mounted on the lifting seat, the driving bar is driven by a horizontal driving power device, and an open driving groove is provided on the driving bar which is sleeved on the annular flange from the side.

7. The bottle conveying device of the blowing, filling and capping machine according to claim 6, characterized in that: The driving bracket is also provided with an auxiliary supporting structure, which auxiliary supports the annular flange when the open driving groove is not sleeved on the annular flange and releases the annular flange when the open driving groove is sleeved on the annular flange.

8. The bottle conveying device of the blowing, filling and capping machine according to claim 7, characterized in that: The auxiliary support structure includes an auxiliary support bar horizontally slidably installed on the driving bracket, and the auxiliary support bar is driven to slide horizontally by an auxiliary horizontal power device. The auxiliary support bar is provided with an open support groove which is sleeved on the annular flange, and the open support groove and the open driving groove are arranged opposite to each other on both sides of the annular flange.

9. The bottle conveying device of the blowing, filling and capping machine according to claim 8, characterized in that: The cache suspension track is fixed on the driving bracket, and the cache suspension track includes a fixed track plate and a movable track plate. The fixed track plate is fixed on the driving bracket, and the movable track plate is horizontally slidably installed on the driving bracket and is driven by a rejection linear power device.

10. The bottle conveying device of the blowing, filling and capping machine according to claim 6, characterized in that: The driving bracket is also provided with a chain linear restraint track for facilitating the entry of the circulating chain, and the chain linear restraint track corresponds to the position of the linear suspension through slot.

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