CN218314670U - Automatic feeding system of plastic film production usefulness - Google Patents

Abstract

The utility model relates to the technical field of automatic raw material feeding, in particular to an automatic feeding system for plastic film production, which comprises a main material pipe, an auxiliary material pipe, a weighing hopper and a storage tank, wherein valves are connected on the main material pipe and the auxiliary material pipe, the main material pipe is communicated with the main material hopper and the weighing hopper, the auxiliary material pipe is communicated with the weighing hopper, and a first switch valve is arranged between the output end of the weighing hopper and the input end of the storage tank; a supply pipe is arranged between the output end of the material storage tank and the input end of each feeding device on the film production equipment, and a second switch valve is arranged on the supply pipe; the first negative pressure unit is used for providing negative pressure for the weighing hopper; the second negative pressure unit is used for providing negative pressure for the feeding device. This scheme is used for solving among the prior art through artifical carry out the problem that artifical intensity of labour is big that the material loading exists to the different feedway of plastic film production facility.

Description

Automatic feeding system of plastic film production usefulness

Technical Field

The utility model relates to a raw materials automatic feeding technical field, concretely relates to automatic feeding system of plastic film production usefulness.

Background

The existing plastic film is widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of food packages is the largest, such as beverage packages, quick-frozen food packages, cooked food packages, fast food packages and the like, the plastic film is different in performance when being applied to different fields, for example, when being applied to the quick-frozen food packages, the plastic film is required to have low temperature resistance and frost resistance, the plastic film is required to have high temperature resistance when being applied to the cooked food packages, the components in the raw materials of the plastic films with different performances are different, and in the same plastic film, the performances of the upper surface and the lower surface of the same plastic film are different along with the more excellent performance of the plastic film, the film can also be divided into a layer, a middle layer and an outer layer during forming, so that the plastic film with different requirements produced by a manufacturer needs more and more standby raw materials, such as 10-20 main materials and 10-20 auxiliary materials.

Production of plastic film adopts these production facility productions of casting machine or extruder or blowing machine more, these production facility require according to the number of piles of film production process, each layer has a feedway, every layer of raw materials of joining in marriage send into feedway on, carry out film production on the production facility is sent to by feedway, among the prior art, because of every layer of required major ingredient and auxiliary material are all inequality, if all former feed bin all need form the intercommunication with feedway, then can make the pipeline of whole feed (also title material loading) very complicated, so common way still is artifical to each feedway batching completion back, recycle negative pressure unit (like the air exhauster) and send the mode on the feedway that corresponds with the raw materials of joining in marriage, but this kind of mode makes artifical intensity of labour great again.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic feeding system of plastic film production usefulness to solve among the prior art and carry out the problem that artifical intensity of labour that the material loading exists through artifical different feedway to plastic film production facility.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic feeding system for plastic film production comprises a main material pipe, an auxiliary material pipe, a weighing hopper and a storage tank, wherein valves are connected to the main material pipe and the auxiliary material pipe respectively; a supply pipe is arranged between the output end of the material storage tank and the input end of each feeding device on the film production equipment, and a second switch valve is arranged on the supply pipe; the weighing machine also comprises a first negative pressure unit and a second negative pressure unit, wherein the first negative pressure unit is communicated with the weighing hopper, the second negative pressure unit is communicated with a feeding device of the production equipment, and the first negative pressure unit is used for providing negative pressure for the weighing hopper; the second negative pressure unit is used for providing negative pressure for the feeding device so that the raw materials in the storage tank are pumped to the feeding device of the film production equipment.

The principle and the advantages of the scheme are as follows: in practical application, after the auxiliary materials are manually or mechanically configured, the first negative pressure unit is utilized to enable the configured auxiliary materials to enter the weighing hopper through the auxiliary material pipe (at the moment, a valve on the auxiliary material pipe is opened, and a valve on the main material pipe is closed), the main materials are also fed into the weighing hopper from the main material bin through the main material pipe (at the moment, the valve on the main material pipe is opened, and the valve on the auxiliary material pipe is closed) under the negative pressure of the first negative pressure unit, and the main material pipe and the auxiliary material pipe are arranged so that the feeding of the main materials and the auxiliary materials to the weighing hopper is not influenced; the raw materials prepared by the weighing hopper enter the material storage tank through the first switch valve after the second negative pressure unit is opened, and then are sent to the corresponding feeding device of the film production equipment through the second switch valve by the material storage tank. Whole process need not the manual work and sends to corresponding feedway after having configured major ingredient and auxiliary material, only needs the opening and close of first negative pressure unit, valve, first ooff valve, second ooff valve and second negative pressure unit of control, just can make the raw materials realize weighing, store and send to corresponding feedway, the manual work only need in time for the feed bin supplementary raw materials can, compare prior art, greatly reduced artifical intensity of labour.

Preferably, as an improvement, a stirrer is arranged in the storage tank.

Has the advantages that: the scheme ensures that the raw materials sent to the film production equipment are mixed more uniformly.

Preferably, as an improvement, still include the loading attachment that is used for carrying out the feed supplement to the major ingredient storehouse, loading attachment includes material loading pipe, material loading hopper and material loading fan, and the material loading hopper intercommunication is held at the convulsions of material loading fan, and material loading pipe intercommunication is held at the end of airing exhaust of material loading fan, and the one end that material loading pipe kept away from material loading fan communicates with the major ingredient storehouse.

Has the advantages that: this scheme is through loading attachment's setting for when the raw materials of main feed bin is less, in time start the material loading fan, in order in time to supply main materials.

Preferably, as an improvement, a shielding net is placed on the feeding hopper.

Has the beneficial effects that: in the feeding process, the opening of a raw material bag for storing the main materials needs to be cut off, and then the raw materials are poured onto a feeding hopper, but the material at the opening of the raw material bag easily drops on the feeding hopper and is conveyed to a main material bin along with a feeding device; the blocking net can block other substances with larger volume, which are not raw materials, from falling into the feeding hopper, and can also block the raw materials entering the feeding hopper to play a role in reducing the speed, so that the situation that the normal work of the feeding fan is influenced due to the fact that the raw materials fall too fast is avoided; in addition, the shielding net is favorable for reducing the speed of the raw materials, and the probability that the raw materials pop out from the feeding hopper is reduced.

Preferably, as an improvement, a bypass pipe is fixedly communicated with the main pipe, a movable plug is arranged at a free end opening of the bypass pipe, and the plug can close the free end opening of the bypass pipe.

Has the beneficial effects that: in the weighing of the main materials, the problem of inaccurate weighing of the main materials is often found, and the problem of inaccurate weighing of the weighing hopper is found through research of an inventor because the weighing hopper is subjected to the impact of the main materials for a long time (the initial end of the negative pressure of the main materials is positioned in the weighing hopper, so the large-amount main materials impact the weighing hopper for a long time) in the feeding process of the main materials. The main materials have impact, and the main material pipes are different in length due to the fact that the main materials are different in specification, and the shorter the length of the main material pipes are, the smaller the pressure loss of the main material pipes is under the condition that the first negative pressure unit provides the same negative pressure, so that the impact of the main material symmetrical hopper is brought by the fact that the force for sucking the raw materials is larger.

This scheme sets up the bypass pipe on main material pipe, and the open-ended area of free end of bypass pipe can be adjusted by the end cap, and the free end open area of this bypass pipe adjusts the back, the pressure release runner cross-sectional area of bypass pipe changes, the adjustment of pressure release pressure has been realized, and then can adjust different pressure release pressure according to the main material pipe of different length during making in-service use, guarantee that all main material pipes are sent to the major ingredient of weighing hopper and can not bring too big impact for the weighing hopper, the influence of main material symmetry hopper sensitivity has been reduced, the accuracy of batching has been improved.

Preferably, as an improvement, the free end opening of bypass pipe is covered with a protection cover, the protection cover covers the end cap, the protection cover is provided with air holes, the protection cover is connected with an adjusting plate in a sliding mode, and the size of the air holes can be adjusted through the adjusting plate.

Has the beneficial effects that: form the protection to the end cap through the protective cover, and can also utilize the bleeder vent to realize adjusting the size of the passageway of protection casing and external intercommunication, and then realize the secondary adjustment to main material pipe pressure release degree, improved this feeding system's practicality.

Preferably, as an improvement, the feed end intercommunication of auxiliary material pipe has the auxiliary material ware of weighing, and the top of auxiliary material ware of weighing is equipped with the auxiliary material case, and the auxiliary material case includes a plurality of fill that hold, and every holds and is connected with the feeder on fighting, and the feeder is used for holding the interior raw materials of fighting and send to the auxiliary material ware of weighing.

Has the beneficial effects that: this scheme makes the auxiliary material of multiple difference can be placed to an auxiliary material incasement, has made things convenient for the interpolation to different auxiliary materials, and the existence of feeder also makes to control the feeder and realize the automatic control to the auxiliary material batching through the controller, need not the manual work and carries out manual batching to the auxiliary material, has improved the accuracy of auxiliary material batching.

Preferably, as an improvement, the feeder employs a screw feeder.

Drawings

Fig. 1 is a schematic view of a first embodiment of the present invention.

Fig. 2 is the three-dimensional structure schematic diagram of the auxiliary material pipe, the auxiliary material weighing device and the auxiliary material box in the embodiment of the utility model.

Fig. 3 is a schematic structural view of fig. 2 with 2 receiving buckets removed.

Fig. 4 is a schematic structural diagram of a screw feeder used in a first embodiment of the present invention.

Fig. 5 is a front sectional view of fig. 4.

Fig. 6 is a schematic three-dimensional structure diagram of a main material pipe and a material selecting valve in the second embodiment of the present invention.

Fig. 7 is an axonometric view of the main pipe in the second embodiment of the present invention.

Fig. 8 is a right side view of fig. 7.

Fig. 9 is a right sectional view of fig. 7.

Fig. 10 is a schematic view of the structure of fig. 9 with the bypass pipe and the main material passage removed.

Fig. 11 is a schematic structural view of a feeding device in the third embodiment of the present invention.

Fig. 12 is a schematic three-dimensional structure diagram of a feeding funnel in the third embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a main material pipe 10, an auxiliary material pipe 20, a main material bin 30, a weighing hopper 40, a storage tank 50, a feeding device 60, a supply pipe 70, a first negative pressure unit 80, a second negative pressure unit 90, a material selecting valve 1, a feeding hole 11, a discharging hole 12, a material selecting component 13, a bypass pipe 2, a protective cover 3, an extension pipe 4, a connecting sleeve 5, an air cylinder 6, a plug 7, a filter screen 8, an adjusting plate 9, an auxiliary material weighing device 21, an auxiliary material box 22, a containing hopper 23, a cover plate 24, a feeder 25, a feeding hole 251, a discharging hole 252, a feeding pipe 31, a feeding hopper 32, a feeding fan 33 and a shielding net 34.

The embodiment is basically as shown in fig. 1 to 5, and with reference to fig. 1, an automatic feeding system for plastic film production includes a main material pipe 10, an auxiliary material pipe 20, a weighing hopper 40, and a storage tank 50, where there are multiple main material pipes 10, valves are installed on each of the main material pipe 10 and the auxiliary material pipe 20, a feeding end of the main material pipe 10 is communicated with a main material bin 30, a discharging end of the main material pipe 10 is communicated with the weighing hopper 40, a first switch valve is installed on a pipeline communicated between an output end of the weighing hopper 40 and an input end of the storage tank 50, an output end of the storage tank 50 is communicated with an input end of each feeding device 60 on a film production equipment through a supply pipe 70, and a second switch valve is installed on the supply pipe 70, and in this embodiment, the first switch valve and the second switch valve both adopt two-way automatic pneumatic control valves. First negative pressure unit 80 is communicated with weighing hopper 40, and first negative pressure unit 80 is used for providing negative pressure for weighing hopper 40 to make negative pressure on weighing hopper 40 can transmit on main material pipe 10 and auxiliary material pipe 20, and then conveniently pump main material and auxiliary material through main material pipe 10 and auxiliary material pipe 20 in weighing hopper 40. The second negative pressure unit 90 is used for providing negative pressure to the feeding device 60, so that the raw material in the storage tank 50 is pumped to the feeding device 60 of the film production equipment. A stirrer is arranged in the storage tank 50. The number of the supply means 60 of the film production apparatus in this embodiment is 3 in total. In the present embodiment, the first negative pressure unit 80 and the second negative pressure unit 90 can both employ a suction fan.

In this embodiment, 16 main material pipes 10 are provided, 2 auxiliary material pipes 20 are provided, all the main material pipes 10 are installed on the same valve, the valve connected to the main material pipes 10 adopts a material selecting valve 1, the material selecting valve 1 can select "an automatic material selecting valve 1 based on multiple types of raw materials" with chinese patent publication No. CN212831517U, the material selecting valve 1 includes a material outlet 12, multiple material inlets 11 and multiple material selecting assemblies 13, the material selecting assemblies 13 can seal the corresponding material inlets 11, the material inlets 11 are communicated with the main material pipes 10, the material outlet 12 of the material selecting valve 1 is communicated with a weighing hopper 40, and the material inlet ends of the main material pipes 10 are communicated with a corresponding main material bin 30.

With reference to fig. 2 to 5, the valve installed on each auxiliary material pipe 20 can be a two-way pneumatic control valve, the discharge end of each auxiliary material pipe 20 is communicated with the weighing hopper 40, the feed end of the auxiliary material pipe 20 is communicated with the auxiliary material weighing device 21, and the auxiliary material box 22 is fixed right above the auxiliary material weighing device 21. A plurality of containing hoppers 23 are fixed in the auxiliary box 22, in this embodiment, 6 containing hoppers 23 are arranged on each auxiliary box 22, an opening is formed in the bottom of each containing hopper 23, a feeder 25 is fixedly installed on the opening, in this embodiment, the feeder 25 is a spiral feeder 25, and a discharge port 252 of the feeder 25 faces downwards and is opposite to the auxiliary material weighing device 21. A cover plate 24 is placed on each containing bucket 23, and a handle is welded on the cover plate 24. The screw feeder 25 comprises a cylinder, a rotating shaft and a screw blade, wherein a feeding port 251 and a discharging port 252 are formed in the cylinder, the feeding port 251 is communicated with the accommodating hopper 23, and the discharging port 252 is opposite to the auxiliary weighing device.

The specific implementation process is as follows:

the method comprises three steps of weighing and feeding the main materials into the material storage tank 50, weighing and feeding the auxiliary materials into the material storage tank 50 and feeding the raw materials into the feeding device 60.

1. Main material weighing and feeding storage tank 50

The communication between the main material pipe 10 to be taken and the weighing hopper 40 is controlled by the controller (i.e. the material selecting assembly 13 is controlled to open the feeding hole 11 on the material selecting valve 1, which needs to take the material), and the first negative pressure unit 80 is started, so that the main material in the main material bin 30 falls onto the weighing hopper 40 through the main material pipe 10 and the material selecting valve 1 for weighing. Each main material is weighed in sequence under the control of the controller, and after weighing is finished, the first switch valve is opened, and the raw materials fall into the storage tank 50.

2. Auxiliary material is weighed and is sent storage tank 50

When the major ingredient was weighed, the spiral feeder 25 that the controller control corresponds starts, and then send required auxiliary material to the supplementary material weighing machine 21 on and weigh, supplementary material weighing machine 21 weighs the auxiliary material and accomplishes the back, the valve on the controller control supplementary material pipe 20 is opened, the negative pressure of first negative pressure unit 80 enters into supplementary material pipe 20 through weighing hopper 40 on, the auxiliary material is taken out weighing hopper 40, then opens first ooff valve, the auxiliary material falls into in the storage tank 50.

3. Raw material feeding device 60

The second negative pressure unit 90 is opened, and the second on-off valve on the feeding pipe connected to the feeding device 60 to be fed is opened, so that the prepared raw material stirred in the storage tank 50 is sent to the feeding device 60, so that the film production apparatus can produce the plastic film.

The whole process of this embodiment has realized the automatic feeding of major ingredient automatic weighing, auxiliary material automatic weighing and the raw materials that the configuration is good, has realized full automated feeding, has greatly improved degree of automation, has reduced artifical intensity of labour.

And the batching of auxiliary material can realize automatic blending through controller, feeder 25 and supplementary weighing machine, can greatly reduce the probability that the auxiliary material joined in marriage the mistake.

Example two

With reference to fig. 6 to fig. 10, the second embodiment is further improved on the basis of the first embodiment, and specifically includes: the main material pipe 10 is fixed with a bypass pipe 2, the free end of the bypass pipe 2 is opened upwards, in the embodiment, the bypass pipe 2 is fixed on the main material pipe 10 and is communicated with the main material pipe 10.

Protection casing 3 is installed to the top free end opening part of bypass pipe 2, the bottom of protection casing 3 is fixed with extension pipe 4, the butt joint of the free end opening of extension pipe 4 and bypass pipe 2, extension pipe 4 and bypass pipe 2 are tightly entangled by adapter sleeve 5 that is equipped with simultaneously, adapter sleeve 5 also adopts the staple bolt in this embodiment, it has the elastic sealing ring of area to paste on the 5 inner walls of adapter sleeve, like the rubber strip, the sealing ring pastes with extension pipe 4 outer wall and bypass pipe 2 outer wall.

3 tops of protection casing are fixed with the driver, and the driver adopts cylinder 6 in this embodiment, and the vertical setting of piston rod of cylinder 6, and inside the piston rod of cylinder 6 stretched into protection casing 3 from 3 tops of protection casing, the piston rod bottom was fixed with and is spherical or hemispherical end cap 7 (end cap 7 is the hemisphere in this embodiment), and cylinder 6 drives end cap 7 vertical movement, and the maximum diameter of end cap 7 is greater than the internal diameter of extension pipe 4, and end cap 7 can be completely with extension pipe 4 shutoff.

Open on the lateral wall of protection casing 3 has the bleeder vent, is fixed with filter screen 8 on the bleeder vent, and vertical sliding connection has regulating plate 9 on the protection casing 3, and regulating plate 9 can adjust the size of bleeder vent, and protection casing 3 top spin has been twisted locking screw, and locking screw can support tightly on regulating plate 9.

One side of the protective cover 3 is open, a transparent plate is fixed on the open end face of the protective cover 3, and the transparent plate seals the full-open end of the protective cover 3.

In the embodiment, when the negative pressure in the main material pipe 10 is too high, the cylinder 6 can be started to drive the plug 7 to move upwards by the cylinder 6, so that a gap exists between the plug 7 and the extension pipe 4, the pressure of the main material pipe 10 passes through the bypass pipe 2, the gap between the extension pipe 4 and the plug 7 (namely, the plug 7 does not completely block the opening at the free end of the bypass pipe 2), and the air holes of the protective cover 3 and then is communicated with the outside, so that the pressure relief of a negative pressure channel is realized, and the excessive impact caused by the symmetrical storage bin of the main materials is reduced or even avoided.

In this embodiment, the gap between the plug 7 and the extension tube 4 is different (the gap is increased when the plug 7 moves upwards, and the gap is decreased when the plug 7 moves downwards), so that the cross-sectional area of the pressure relief flow channel when the pressure of the main material tube 10 leaks is different, and the pressure relief pressure of the main material tube 10 is adjusted according to the requirements of the main material tubes 10 with different lengths.

In addition, because the protective cover 3 is provided with the air holes, the main material pipe 10 is communicated with the outside through the air holes, and when the size of the air holes is adjusted through the adjusting plate 9, the pressure relief pressure of the main material pipe 10 can be adjusted, so that the adjustment range of the pressure relief of the main material pipe 10 is enlarged.

EXAMPLE III

With reference to fig. 11 and 12, the third embodiment is further improved on the basis of the first embodiment, and specifically, the following steps are performed: still including the loading attachment that is used for carrying out the feed supplement to major ingredient storehouse 30, loading attachment includes material loading 31, material loading hopper 32 and material loading fan 33, and material loading hopper 32 and material loading fan 33 are all fixed subaerial, and material loading hopper 32 intercommunication is held at the convulsions of material loading fan 33, and material loading 31 intercommunication is held in the end of airing exhaust of material loading fan 33, and the one end that material loading fan 33 was kept away from to material loading 31 communicates with major ingredient storehouse 30, has placed on the material loading hopper 32 and has sheltered from net 34.

In this embodiment, the raw material on the feeding hopper 32 is timely fed to the corresponding main material bin 30 through the feeding pipe 31 by pumping the feeding fan 33, so as to realize timely feeding to the raw material bin.

The shielding net 34 can prevent other substances with larger volume, which are not raw materials, from falling into the feeding hopper 32, and can also prevent the raw materials entering the feeding hopper 32 from falling to play a role in reducing the speed, so that the situation that the normal work of the feeding fan 33 is influenced due to the fact that the raw materials fall too fast is avoided; in addition, the speed reduction of the material by the shielding mesh 34 is also beneficial to reducing the probability of the material popping out of the feeding hopper 32.

The above description is only an example of the present invention, and the common general knowledge of the known technical solutions and/or characteristics is not described herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. An automatic feeding system for plastic film production comprises a main material pipe, an auxiliary material pipe, a weighing hopper and a storage tank, wherein valves are connected to the main material pipe and the auxiliary material pipe respectively; the method is characterized in that: a supply pipe is arranged between the output end of the material storage tank and the input end of each feeding device on the film production equipment, and a second switch valve is arranged on the supply pipe; the device also comprises a first negative pressure unit and a second negative pressure unit, wherein the first negative pressure unit is communicated with the weighing hopper, the second negative pressure unit is communicated with a feeding device of the production equipment, and the first negative pressure unit is used for providing negative pressure for the weighing hopper; the second negative pressure unit is used for providing negative pressure for the feeding device so that the raw materials in the storage tank are pumped to the feeding device of the film production equipment.

2. The automatic feeding system for plastic film production according to claim 1, wherein: a stirrer is arranged in the storage tank.

3. The automatic feeding system for plastic film production according to claim 1, wherein: the feeding device comprises a feeding pipe, a feeding hopper and a feeding fan, the feeding hopper is communicated with the air exhaust end of the feeding fan, and one end, far away from the feeding fan, of the feeding pipe is communicated with the main material bin.

4. The automatic feeding system for plastic film production according to claim 3, wherein: and a shielding net is arranged on the feeding hopper.

5. The automatic feeding system for plastic film production according to claim 1, wherein: the main material pipe is fixedly communicated with a bypass pipe, a movable plug is arranged at a free end opening of the bypass pipe, and the plug can seal the free end opening of the bypass pipe.

6. The automatic feeding system for plastic film production according to claim 5, wherein: the protective cover is covered on the opening of the free end of the bypass pipe, the protective cover covers the plug, air holes are formed in the protective cover, an adjusting plate is connected to the protective cover in a sliding mode, and the size of the air holes can be adjusted through the adjusting plate.

7. The automatic feeding system for plastic film production according to claim 1, wherein: the feed end intercommunication of auxiliary material pipe has the auxiliary material ware of weighing, and the top of auxiliary material ware of weighing is equipped with the auxiliary material case, and the auxiliary material case includes a plurality of fill that hold, and every holds to be connected with the feeder on fighting, and the feeder is used for holding the fill in raw materials send to the auxiliary material ware of weighing.

8. The automatic feeding system for plastic film production according to claim 7, wherein: the feeder adopts a screw feeder.

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