阅读说明：本技术 硬管物料灌装生产线 (Hard tube material filling production line ) 是由 闵晓进 白玉峰 于 2019-09-25 设计创作，主要内容包括：本发明提出一种硬管物料灌装生产线,包括硬管输送装置、硬管物料灌装连接定量装置及硬管端盖自动压盖装置,所述硬管输送装置包括支架,所述支架上设置有两相对平行的同步带,所述同步带表面间隔设置有若干硬管托架,所述硬管托架表面设置有凹槽以容置硬管,所述硬管物料灌装连续定量装置,包括相对设置的端盖顶紧气缸及物料灌装连续定量装置,所述硬管端盖自动压盖装置,包括相对设置的端盖顶紧气缸及端盖机构。本发明提出一种硬管物料灌装生产线,在使用过程中大大减少了人工的干预,使生产效率大幅提升,降低了工人劳动强度,提高了产品质量。(The invention provides a hard tube material filling production line which comprises a hard tube conveying device, a hard tube material filling connection quantifying device and a hard tube end cover automatic capping device, wherein the hard tube conveying device comprises a support, two relatively parallel synchronous belts are arranged on the support, a plurality of hard tube brackets are arranged on the surfaces of the synchronous belts at intervals, grooves are formed in the surfaces of the hard tube brackets to accommodate hard tubes, the hard tube material filling continuous quantifying device comprises end cover abutting cylinders and material filling continuous quantifying devices which are oppositely arranged, and the hard tube end cover automatic capping device comprises end cover abutting cylinders and end cover mechanisms which are oppositely arranged. The invention provides a hard tube material filling production line, which greatly reduces manual intervention in the use process, greatly improves the production efficiency, reduces the labor intensity of workers and improves the product quality.)

1. A hard tube material filling production line is characterized by comprising a hard tube conveying device, a hard tube material filling continuous quantifying device and a hard tube end cover automatic capping device;

the hard tube conveying device comprises a support, two parallel synchronous belts are arranged on the support, a plurality of hard tube brackets are arranged on the surfaces of the synchronous belts at intervals, the hard tube brackets on the surfaces of the two opposite synchronous belts are in one-to-one correspondence, grooves are formed in the surfaces of the hard tube brackets to accommodate hard tubes, one corresponding two hard tube brackets are used for accommodating one hard tube, the two opposite synchronous belts are respectively connected with a synchronous wheel, the synchronous wheels are connected through a rotating shaft, and the rotating shaft is connected with a first power mechanism;

the first power mechanism comprises an air cylinder, the power output end of the air cylinder is connected with a pawl through a pawl frame, the pawl frame is provided with a positioning hole, the positioning hole is sleeved on a rotating shaft, a ratchet wheel is fixedly arranged on the rotating shaft, the pawl is connected with the ratchet wheel, the air cylinder drives the pawl to rotate along the rotating shaft so as to shift the ratchet wheel, and the synchronous belt moves forwards one station every time the air cylinder moves, so that the hard pipe moves forwards one station;

the hard tube material filling continuous quantifying device comprises an end cover jacking air cylinder and a filling continuous quantifying device which are oppositely arranged, and a preset spacing distance is reserved between the end cover jacking air cylinder and the filling continuous quantifying device and used for accommodating the hard tubes conveyed by the hard tube conveying device;

the continuous quantitative filling device comprises a quantitative cylinder, the quantitative cylinder is provided with a feeding hole and a discharging hole, an end cover jacking cylinder is used for pushing a filling hole of a hard pipe conveyed by a hard pipe conveying device to be correspondingly connected with the discharging hole, the feeding hole is connected with a material conveying mechanism so as to convey materials to the feeding hole constantly, a first piston and a second piston are arranged in the quantitative cylinder, the first piston is connected with the second piston through a pull rod, a rotary valve is sleeved on the pull rod between the first piston and the second piston, a first cavity is formed between the first piston and the rotary valve, a second cavity is formed between the second piston and the rotary valve, one side of the circumferential end face of the rotary valve is provided with the first feeding hole and the second feeding hole, and the other side of the circumferential end face of the rotary valve is provided with the first material discharging hole and the second discharging hole;

the first feeding hole extends to the left side wall of the rotary valve to be communicated with the first cavity, the second feeding hole extends to the right side wall of the rotary valve to be communicated with the second cavity, the first discharging hole extends to the right side wall of the rotary valve to be communicated with the second cavity, and the second discharging hole extends to the left side wall of the rotary valve to be communicated with the first cavity;

the rotary valve is connected with a second power mechanism to drive the rotary valve to rotate, when the rotary valve rotates to enable the first feeding hole to be communicated with the feeding hole, materials enter the first cavity through the first feeding hole, when materials injected into the first cavity reach a preset value, the second power mechanism drives the rotary valve to rotate to enable the second feeding hole to be communicated with the feeding hole, the discharging hole is communicated with the second discharging hole, when the materials injected into the second cavity through the second feeding hole gradually reach the preset value, the second piston gradually drives the first piston to move so as to enable the first cavity to be compressed, and the materials are output along the second discharging hole and the discharging hole to finish one-time filling;

when the material in the second chamber reaches a preset value, the second power mechanism drives the rotary valve to rotate so as to enable the first feeding hole to be communicated with the feeding hole, the discharging hole is communicated with the first discharging hole, and when the material enters the first chamber through the first feeding hole and gradually reaches the preset value, the first piston drives the second piston to move so as to enable the second chamber to be compressed, so that the material is output along the first discharging hole and the discharging hole to finish primary filling;

conveying the filled hard tube to the next station by a hard tube conveying device;

the feeding port is connected with a buffer cylinder, a buffer piston is arranged in the buffer cylinder, the buffer cylinder is connected with a constant air source, the pressure of the constant air source is equal to the filling pressure, when the first chamber or the second chamber is filled and is not subjected to the next filling action, the pressure in the buffer cylinder is increased due to the increase of the material so as to push the piston to move downwards, the redundant material is filled into the buffer cylinder, and when the rotary valve is switched to the reverse direction, the pressure of the buffer cylinder is reduced, and the buffer piston pushes the material into the quantitative cylinder;

the automatic hard tube end cover capping device comprises an end cover jacking cylinder and an end cover mechanism which are arranged oppositely, a preset spacing distance is reserved between the end cover jacking cylinder and the end cover mechanism and used for accommodating filled hard tubes conveyed by a hard tube conveying device, the end cover mechanism comprises a support, a cover conveying rail is arranged on the support, end cover clamping jaws are respectively arranged at the upper part and the lower part of a discharge port of the cover conveying rail, a hard tube resetting cylinder is arranged at the rear part of the discharge port, a cover conveying mechanism is arranged at one side of the cover conveying rail and comprises a cover conveying cylinder, a pawl is arranged at the power conveying outlet end of the cover conveying cylinder and connected with an end cover in the cover conveying rail, and the cover conveying cylinder pushes one end cover forwards to move one station through the pawl once per action;

when the end cover is pushed to the discharge port, the end cover clamping jaws tightly press the end cover, the end cover tightly pushes the filled hard pipe conveyed by the hard pipe conveying device to enable the end opening of the hard pipe to be tightly pressed and closed with the end cover, and after the end cover is closed, the hard pipe is pushed out by the hard pipe resetting cylinder at the rear part of the discharge port and conveyed to the next station by the hard pipe conveying device.

2. The hard tube material filling production line as claimed in claim 1, wherein the second power mechanism comprises a rotary valve swing cylinder, a power transmission end of the rotary valve swing cylinder is connected with a rotary valve swing arm, and an end of the rotary valve swing arm is inserted into a swing rod mounting hole on a circumferential end face of the rotary valve so as to push the rotary valve to rotate.

3. The hard tube material filling line according to claim 1 or 2, wherein a positioning detection mechanism is disposed on one side of the first piston or the second piston, the positioning detection mechanism is connected to the second power mechanism, when the positioning detection mechanism detects that the first piston or the second piston moves to a preset position, it indicates that the material in the first chamber or the second chamber is injected to a preset value, and the second power mechanism drives the rotary valve to rotate.

4. The hard tube material filling line according to claim 3, wherein a detection disc is disposed on one side of the first piston or the second piston, and the positioning detection mechanism detects a position of the detection disc to determine a position of the first piston or the second piston.

5. The hard tube material filling production line as claimed in claim 1, wherein one side of the synchronizing wheel is provided with spring positioning lock pins, positioning holes are uniformly distributed on the circumference of the surface of the synchronizing wheel, the spring positioning lock pins can be clamped with one positioning hole, and the spring positioning lock pin moves from the positioning hole to another positioning hole which is close to the positioning hole every time the synchronizing wheel acts.

6. The hard tube material filling line of claim 1, wherein the pawl is connected with a pawl frame through a pawl shaft, and the pawl is connected with a pawl torsion spring.

7. The hard tube material filling line according to claim 1, wherein the power delivery outlet end of the cap feeding cylinder is connected with a pawl through a sliding block, and the sliding block is arranged on a sliding rail.

Technical Field

The invention relates to a continuous quantitative system for material filling, in particular to a hard tube material filling production line.

Background

The complete sets of machine equipment on the existing market can not meet the functions of automatically filling and sealing the existing hard pipe.

Disclosure of Invention

In order to solve the technical problem, the embodiment of the invention provides a hard tube material filling production line which can complete the continuous quantitative filling of hard tubes and has high production efficiency. The technical scheme is as follows:

the invention provides a hard tube material filling production line which comprises a hard tube conveying device, a hard tube material filling continuous quantifying device and a hard tube end cover automatic capping device, wherein the hard tube conveying device is connected with the hard tube material filling continuous quantifying device through a pipeline;

the hard tube conveying device comprises a support, two parallel synchronous belts are arranged on the support, a plurality of hard tube brackets are arranged on the surfaces of the synchronous belts at intervals, the hard tube brackets on the surfaces of the two opposite synchronous belts are in one-to-one correspondence, grooves are formed in the surfaces of the hard tube brackets to accommodate hard tubes, one corresponding two hard tube brackets are used for accommodating one hard tube, the two opposite synchronous belts are respectively connected with a synchronous wheel, the synchronous wheels are connected through a rotating shaft, and the rotating shaft is connected with a first power mechanism;

the first power mechanism comprises an air cylinder, the power output end of the air cylinder is connected with a pawl through a pawl frame, the pawl frame is provided with a positioning hole, the positioning hole is sleeved on a rotating shaft, a ratchet wheel is fixedly arranged on the rotating shaft, the pawl is connected with the ratchet wheel, the air cylinder drives the pawl to rotate along the rotating shaft so as to shift the ratchet wheel, and the synchronous belt moves forwards one station every time the air cylinder moves, so that the hard pipe moves forwards one station;

the hard tube material filling continuous quantifying device comprises an end cover jacking air cylinder and a filling continuous quantifying device which are oppositely arranged, and a preset spacing distance is reserved between the end cover jacking air cylinder and the filling continuous quantifying device and used for accommodating the hard tubes conveyed by the hard tube conveying device;

the continuous quantitative filling device comprises a quantitative cylinder, the quantitative cylinder is provided with a feeding hole and a discharging hole, an end cover jacking cylinder is used for pushing a filling hole of a hard pipe conveyed by a hard pipe conveying device to be correspondingly connected with the discharging hole, the feeding hole is connected with a material conveying mechanism so as to convey materials to the feeding hole constantly, a first piston and a second piston are arranged in the quantitative cylinder, the first piston is connected with the second piston through a pull rod, a rotary valve is sleeved on the pull rod between the first piston and the second piston, a first cavity is formed between the first piston and the rotary valve, a second cavity is formed between the second piston and the rotary valve, one side of the circumferential end face of the rotary valve is provided with the first feeding hole and the second feeding hole, and the other side of the circumferential end face of the rotary valve is provided with the first material discharging hole and the second discharging hole;

the first feeding hole extends to the left side wall of the rotary valve to be communicated with the first cavity, the second feeding hole extends to the right side wall of the rotary valve to be communicated with the second cavity, the first discharging hole extends to the right side wall of the rotary valve to be communicated with the second cavity, and the second discharging hole extends to the left side wall of the rotary valve to be communicated with the first cavity;

the rotary valve is connected with a second power mechanism to drive the rotary valve to rotate, when the rotary valve rotates to enable the first feeding hole to be communicated with the feeding hole, materials enter the first cavity through the first feeding hole, when materials injected into the first cavity reach a preset value, the second power mechanism drives the rotary valve to rotate to enable the second feeding hole to be communicated with the feeding hole, the discharging hole is communicated with the second discharging hole, when the materials injected into the second cavity through the second feeding hole gradually reach the preset value, the second piston gradually drives the first piston to move so as to enable the first cavity to be compressed, and the materials are output along the second discharging hole and the discharging hole to finish one-time filling;

when the material in the second chamber reaches a preset value, the second power mechanism drives the rotary valve to rotate so as to enable the first feeding hole to be communicated with the feeding hole, the discharging hole is communicated with the first discharging hole, and when the material enters the first chamber through the first feeding hole and gradually reaches the preset value, the first piston drives the second piston to move so as to enable the second chamber to be compressed, so that the material is output along the first discharging hole and the discharging hole to finish primary filling;

conveying the filled hard tube to the next station by a hard tube conveying device;

the feeding port is connected with a buffer cylinder, a buffer piston is arranged in the buffer cylinder, the buffer cylinder is connected with a constant air source, the pressure of the constant air source is equal to the filling pressure, when the first chamber or the second chamber is filled and is not subjected to the next filling action, the pressure in the buffer cylinder is increased due to the increase of the material so as to push the piston to move downwards, the redundant material is filled into the buffer cylinder, and when the rotary valve is switched to the reverse direction, the pressure of the buffer cylinder is reduced, and the buffer piston pushes the material into the quantitative cylinder;

the automatic hard tube end cover capping device comprises an end cover jacking cylinder and an end cover mechanism which are arranged oppositely, a preset spacing distance is reserved between the end cover jacking cylinder and the end cover mechanism and used for accommodating filled hard tubes conveyed by a hard tube conveying device, the end cover mechanism comprises a support, a cover conveying rail is arranged on the support, end cover clamping jaws are respectively arranged at the upper part and the lower part of a discharge port of the cover conveying rail, a hard tube resetting cylinder is arranged at the rear part of the discharge port, a cover conveying mechanism is arranged at one side of the cover conveying rail and comprises a cover conveying cylinder, a pawl is arranged at the power conveying outlet end of the cover conveying cylinder and connected with an end cover in the cover conveying rail, and the cover conveying cylinder pushes one end cover forwards to move one station through the pawl once per action;

when the end cover is pushed to the discharge port, the end cover clamping jaws tightly press the end cover, the end cover tightly pushes the filled hard pipe conveyed by the hard pipe conveying device to enable the end opening of the hard pipe to be tightly pressed and closed with the end cover, and after the end cover is closed, the hard pipe is pushed out by the hard pipe resetting cylinder at the rear part of the discharge port and conveyed to the next station by the hard pipe conveying device.

Preferably, the second power mechanism comprises a rotary valve swing cylinder, a power transmission end of the rotary valve swing cylinder is connected with a rotary valve swing arm, and the end part of the rotary valve swing arm is inserted into a swing rod mounting hole in the circumferential end face of the rotary valve so as to push the rotary valve to rotate.

Preferably, a positioning detection mechanism is arranged on one side of the first piston or the second piston, the positioning detection mechanism is connected with a second power mechanism, when the positioning detection mechanism detects that the first piston or the second piston moves to a preset position, the material injection of the first cavity or the second cavity reaches a preset value, and the second power mechanism drives the rotary valve to rotate.

Preferably, a detection disc is disposed on one side of the first piston or the second piston, and the positioning detection mechanism detects a position of the detection disc to determine the position of the first piston or the second piston.

Preferably, one side of the synchronizing wheel is provided with a spring positioning lock pin, positioning holes are uniformly distributed on the circumference of the surface of the synchronizing wheel, the spring positioning lock pin can be clamped with one positioning hole, and the spring positioning lock pin moves into another positioning hole which is close to the spring positioning lock pin from the positioning hole every time the synchronizing wheel acts.

Preferably, the pawl is connected with the pawl frame through a pawl shaft, and the pawl is connected with the pawl torsion spring.

Preferably, the power delivery outlet end of the cap delivery cylinder is connected with the pawl through a sliding block, and the sliding block is arranged on the sliding rail.

The hard tube material filling production line provided by the invention is simple in overall design, the hard tube conveying device is used for conveying hard tubes in a stepping mode through a stepping structure with the ratchet wheel and the pawl matched with the synchronous wheel and the synchronous belt, and the hard tube material filling production line has the characteristics of high positioning precision, low noise, high production efficiency and labor saving; the double-piston rotary valve quantitative mode of the hard tube material filling continuous quantitative device redesigns the filling quantitative mode, the rotary valve controls the movement between the first piston and the second piston to realize material pushing filling, the filling quantitative is more accurate, the filling conveyor does not need to stop in the rotary valve switching process, the continuous filling is realized, and the filling efficiency is improved; the capping device has the advantages of simple structure, accurate positioning, high working efficiency and low failure rate. The production line greatly reduces manual intervention in the using process, greatly improves the production efficiency, reduces the labor intensity of workers and improves the product quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a hard pipe material filling line provided in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a hard tube conveying device provided in an embodiment of the present invention;

FIG. 3 is a schematic view of a ratchet-pawl connection of a hard tube delivery device provided in an embodiment of the present invention;

FIG. 4 is another side schematic view of FIG. 3;

fig. 5 is a schematic structural diagram of a hard tube material filling continuous quantitative device provided in an embodiment of the invention;

FIG. 6 is a schematic structural diagram of a buffer cylinder part of the continuous quantitative device for filling hard tube materials, provided in the embodiment of the invention;

fig. 7 is a schematic position diagram of a first piston, a second piston and a rotary valve of the continuous dosing device for hard tube material filling provided in the embodiment of the invention;

FIG. 8 is a sectional view of a rotary valve of a continuous quantitative device for filling hard tube materials, provided in an embodiment of the present invention;

FIG. 9 is a view from the A-A direction of FIG. 8;

FIG. 10 is a view from the B-B direction of FIG. 8;

fig. 11 is a perspective view of a rotary valve of the continuous quantitative device for filling hard tube materials provided in the embodiment of the invention;

FIG. 12 is a perspective view of the other side of the rotary valve of the continuous quantitative device for filling hard tube materials in accordance with the embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an automatic capping device for hard tube end caps provided in an embodiment of the present invention;

FIG. 14 is a schematic structural view of an automated end closure mechanism provided in an embodiment of the present invention;

fig. 15 is a structural diagram of a pawl portion of an automatic hard tube end cap capping device provided in an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The invention provides a hard tube material filling production line, which comprises a hard tube conveying device 1, hard tube material filling continuous quantitative devices 2 and 3 and hard tube end cover automatic capping devices 4 and 5, as shown in figure 1;

as shown in fig. 2-4, the hard tube conveying device comprises a support, two opposite parallel synchronous belts 1-1, 1-2 are arranged on the support, a plurality of hard tube brackets 1-3 are arranged on the surfaces of the synchronous belts at intervals, the hard tube brackets on the surfaces of the two opposite synchronous belts are in one-to-one correspondence, the surfaces of the hard tube brackets are provided with grooves for accommodating hard tubes, one corresponding two hard tube brackets are used for accommodating one hard tube, the two opposite synchronous belts are respectively connected with a synchronous wheel 1-5, the synchronous wheels are connected through a rotating shaft 1-4, the rotating shaft is connected with a first power mechanism,

the first power mechanism comprises an air cylinder 1-6, the power output end of the air cylinder 1-6 is connected with a pawl through a pawl frame 1-7, the pawl frame is provided with a positioning hole, the positioning hole is sleeved on a rotating shaft 1-4, a ratchet wheel 1-8 is fixedly arranged on the rotating shaft, the pawl 1-8 is connected with the ratchet wheel 1-9, the air cylinder drives the pawl to rotate along the rotating shaft so as to stir the ratchet wheel, and therefore the synchronous belt moves forwards one station every time the air cylinder acts, and a hard pipe moves forwards one station; the pawl is connected with the pawl frame through pawl shafts 1-10, the pawl is connected with the pawl torsion spring,

one side of the synchronizing wheel is provided with spring positioning lock pins 1-12, positioning holes 1-11 are uniformly distributed on the circumference of the surface of the synchronizing wheel, the spring positioning lock pins can be clamped with one positioning hole, and the spring positioning lock pins move into another positioning hole which is close to the spring positioning lock pins from the positioning holes every time the synchronizing wheel acts.

As shown in fig. 5-12, the continuous hard tube material filling and quantifying device includes an end cover abutting cylinder 3 and a continuous filling and quantifying device 2, which are oppositely disposed, a preset spacing distance is provided between the end cover abutting cylinder and the continuous filling and quantifying device for accommodating the hard tube conveyed by the hard tube conveying device,

the continuous quantitative filling device comprises a quantitative cylinder 2-1, the quantitative cylinder is provided with a feeding hole 2-3 and a discharging hole 2-2, an end cover tightly-propping cylinder is used for pushing a filling hole of a hard tube conveyed by the hard tube conveying device to be correspondingly connected with the discharging hole, the feeding hole is connected with a material conveying mechanism so as to convey materials to the feeding hole constantly, a first piston 2-4 and a second piston 2-5 are arranged in the quantitative cylinder, the first piston 2-4 is connected with the second piston 2-5 through a pull rod 2-7, a rotary valve 2-6 is sleeved on the pull rod between the first piston and the second piston, a first cavity is formed between the first piston and the rotary valve, a second cavity is formed between the second piston and the rotary valve, and a first feeding hole 2-8 and a second feeding hole 2-9 are arranged on one side of the circumferential end face of the rotary valve, the other side is provided with a first material outlet 2-11 and a second material outlet 2-12,

the first feeding hole extends to the left side wall of the rotary valve to be communicated with the first cavity, the second feeding hole extends to the right side wall of the rotary valve to be communicated with the second cavity, the first discharging hole extends to the right side wall of the rotary valve to be communicated with the second cavity, the second discharging hole extends to the left side wall of the rotary valve to be communicated with the first cavity,

the rotary valve is connected with a second power mechanism to drive the rotary valve to rotate, when the rotary valve rotates until a first feeding hole is communicated with a feeding hole, materials enter a first cavity through the first feeding hole, when materials injected into the first cavity reach a preset value, the second power mechanism drives the rotary valve to rotate so as to enable the second feeding hole to be communicated with the feeding hole, at the moment, the discharging hole is communicated with a second discharging hole, when the materials injected into the second cavity through the second feeding hole gradually reach the preset value, a second piston gradually drives a first piston to move so as to enable the first cavity to be compressed, so that the materials are output along the second discharging hole and the discharging hole to finish one-time filling,

when the material in the second chamber reaches a preset value, the second power mechanism drives the rotary valve to rotate so as to enable the first feeding hole to be communicated with the feeding hole, the discharging hole is communicated with the first discharging hole, when the material enters the first chamber through the first feeding hole and gradually reaches the preset value, the first piston drives the second piston to move so as to enable the second chamber to compress, so that the material is output along the first discharging hole and the discharging hole to finish primary filling,

the filled hard tube is conveyed to the next station by the hard tube conveying device,

the feeding port is connected with a buffer cylinder 2-17, a buffer piston 2-18 is arranged in the buffer cylinder, the buffer cylinder is connected with a constant air source 2-19, the pressure of the constant air source is equal to the filling pressure, when the first chamber or the second chamber is filled and the next filling action is not received, the pressure in the buffer cylinder is increased due to the increase of the material pressure so as to push the piston to move downwards, the redundant material is filled into the buffer cylinder, when the change valve is changed to the direction, the pressure of the buffer cylinder is reduced, the buffer piston pushes the material into the quantitative cylinder,

the second power mechanism comprises a rotary valve swing cylinder 2-13, the power transmission end of the rotary valve swing cylinder is connected with a rotary valve swing arm 2-14, the end part of the rotary valve swing arm is inserted in a swing arm mounting hole 2-10 on the circumferential end surface of the rotary valve to push the rotary valve to rotate,

and one side of the first piston or the second piston is provided with a positioning detection mechanism 2-15, the positioning detection mechanism is connected with a second power mechanism, when the positioning detection mechanism detects that the first piston or the second piston moves to a preset position, the material injection of the first cavity or the second cavity is indicated to reach a preset value, and the second power mechanism drives the rotary valve to rotate.

And one side of the first piston or the second piston is provided with a detection disc 2-16, and the positioning detection mechanism detects the position of the detection disc so as to judge the position of the first piston or the second piston.

As shown in fig. 13-15, the automatic hard tube end cover capping device includes an end cover abutting cylinder 5 and an end cover mechanism 4, which are oppositely disposed, a preset spacing distance is provided between the end cover abutting cylinder and the end cover mechanism for accommodating a filled hard tube 6 conveyed by a hard tube conveying device, the end cover mechanism 3 includes a support 4-1, a cover conveying rail 4-2 is disposed on the support 4-1, end cover claws 4-3 are respectively disposed at upper and lower portions of a discharge port of the cover conveying rail, a hard tube resetting cylinder 4-4 is disposed at a rear portion of the discharge port, a cover conveying mechanism is disposed at one side of the cover conveying rail, the cover conveying mechanism includes a cover conveying cylinder 4-5, a power conveying end of the cover conveying cylinder is provided with a pawl 4-8, the pawl 4-8 is connected with a pressure spring 4-10, the pawl is connected with one end cover 4-9 in the cover conveying rail, the cover conveying cylinder pushes one end cover forwards to move one station through the pawl once per action;

when the end cover is pushed to the discharge port, the end cover clamping jaws tightly press the end cover, the end cover tightly pushes the filled hard pipe conveyed by the hard pipe conveying device to enable the end opening of the hard pipe to be tightly pressed and closed with the end cover, and after the end cover is closed, the hard pipe is pushed out by the hard pipe resetting cylinder at the rear part of the discharge port and conveyed to the next station by the hard pipe conveying device.

The power transmission outlet end of the cap conveying cylinder is connected with a pawl through a sliding block 4-6, and the sliding block is arranged on a sliding rail 4-7.

The hard tube material filling production line provided by the invention is simple in overall design, the hard tube conveying device is used for conveying hard tubes in a stepping mode through a stepping structure with the ratchet wheel and the pawl matched with the synchronous wheel and the synchronous belt, and the hard tube material filling production line has the characteristics of high positioning precision, low noise, high production efficiency and labor saving; the double-piston rotary valve quantitative mode of the hard tube material filling continuous quantitative device redesigns the filling quantitative mode, the rotary valve controls the movement between the first piston and the second piston to realize material pushing filling, the filling quantitative is more accurate, the filling conveyor does not need to stop in the rotary valve switching process, the continuous filling is realized, and the filling efficiency is improved; the capping device has the advantages of simple structure, accurate positioning, high working efficiency and low failure rate. The production line greatly reduces manual intervention in the using process, greatly improves the production efficiency, reduces the labor intensity of workers and improves the product quality.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.