CN220865886U - Unpacking device and raw material throwing device - Google Patents

Abstract

The utility model relates to the technical field of unpacking of bagged raw materials, in particular to an unpacking device and a raw material throwing device. The unpacking device comprises a closed box, wherein the wall of the closed box is provided with a feeding port for the bagged raw materials to enter, a waste outlet for discharging empty raw material bags and a feeding port communicated with the feeding port of the raw material storage tank; a row of conveying roller sets positioned above the feeding port are arranged in the closed box, and the conveying roller sets are horizontally arranged between the feeding port and the waste outlet so as to convey the bagged raw materials from the feeding port to the waste outlet; the conveying rollers of at least one conveying roller set, which are close to the feeding port, are provided with cutting parts for cutting the raw material bags, gaps for raw materials to fall down are arranged between adjacent conveying rollers in the conveying roller set, and the closed box is also provided with a first driving device for driving the conveying roller set to rotate. The utility model aims to solve the problem that the human unpacking in the prior art easily causes dust emission of raw materials to harm the health of staff.

Description

Unpacking device and raw material throwing device

Technical Field

The utility model relates to the technical field of unpacking of bagged raw materials, in particular to an unpacking device and a raw material throwing device.

Background

A large amount of bagged powder raw materials are needed in the catalyst production process. These bagged materials are usually manually unpacked. The powder raw materials can vibrate in the manual unpacking process, the vibrated powder raw materials generate raw material dust, and the raw material dust can harm the health of staff.

Disclosure of utility model

The utility model aims to solve the problem that the human unpacking in the prior art easily causes dust emission of raw materials to harm the health of staff.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an unpacking device comprising a closed box, a wall of which is provided with a feed port for the entrance of bagged raw materials, a waste outlet for discharging empty raw material bags, and a feed port for communicating with a feed port of a raw material storage tank; a row of conveying roller sets positioned above the feeding port are arranged in the closed box, and the conveying roller sets are horizontally arranged between the feeding port and the waste outlet so as to convey the bagged raw materials from the feeding port to the waste outlet; the conveying rollers of at least one conveying roller set, which are close to the feeding port, are provided with cutting parts for cutting the raw material bags, gaps for raw materials to fall down are arranged between adjacent conveying rollers in the conveying roller set, and the closed box is also provided with a first driving device for driving the conveying roller set to rotate.

In some embodiments, the conveyor roller set includes a plurality of first conveyor rollers spaced apart and a plurality of second conveyor rollers spaced apart, the first conveyor rollers being disposed proximate the feed opening and the second conveyor rollers being disposed distal the feed opening, the first conveyor rollers having cutting elements disposed thereon.

In some embodiments, each of the first transfer rollers is provided with a plurality of cutting members spaced apart along an axial direction of the first transfer roller.

In some embodiments, the cutting member is arranged as an annular blade encircling the first transfer roller, the radial direction of the annular blade coinciding with the radial direction of the first transfer roller.

In some embodiments, the second transfer roller is provided with a plurality of rapping members spaced apart along the circumference of the second transfer roller; and/or the rapping member is provided as a rapping plate having a length extending in the axial direction of the second transfer roller and a width extending in the radial direction of the second transfer roller.

In some embodiments, a bale plucking mechanism for clamping or releasing the raw material bags and a moving mechanism for driving the bale plucking mechanism to linearly move along the arrangement direction of the conveying roller sets are further arranged in the closed box, and the bale plucking mechanism is positioned above the conveying roller sets.

In some embodiments, the bale plucking mechanism comprises a base, two shafts, a second drive device, and two hooks; the base with the accommodating cavity is arranged on the moving mechanism, two avoiding openings which are distributed at intervals along the axial direction of the conveying roller set and are respectively communicated with the accommodating cavity are formed in the bottom of the base, two rotating shafts are horizontally arranged in the accommodating cavity at intervals along the axial direction of the conveying roller set, two C-shaped hook claws are respectively corresponding to the two rotating shafts one by one, the head ends of the hook claws are connected with the rotating shafts, and the tail ends of the two hook claws are opposite to each other in the axial direction of the conveying roller set; the second driving mechanism arranged on the base can drive the two rotating shafts to circumferentially rotate so that the tail ends of the two hook claws are close to or far away from each other.

In some embodiments, the movement mechanism comprises a screw, a slider, a limiting plate, and a third drive; the screw rod and the limiting plate are arranged in the closed box, the lengths of the screw rod and the limiting plate extend along the arrangement direction of the conveying roller group, the limiting plate is positioned right above the screw rod, the sliding block is arranged on the screw rod, the top surface of the sliding block is contacted with the bottom surface of the limiting plate, and the third driving device is arranged in the closed box; the third driving device can drive the screw rod to circumferentially rotate so as to enable the sliding block to reciprocate along the screw rod.

The utility model also provides a raw material throwing device which comprises a raw material storage tank and the unpacking device, wherein the closed box is positioned above the raw material storage tank, and the material throwing port is communicated with the material inlet of the raw material storage tank.

In some embodiments, the feedstock delivery device includes a conveyor with a discharge end positioned outside of the feed port.

The technical scheme of the utility model has the following beneficial effects:

The first driving device can drive the conveying roller set to rotate so that the bagged raw materials fed into the closed box from the feeding port can be conveyed on the conveying roller set; the conveying rollers of the conveying roller set, which are close to the feeding port, are provided with cutting parts, and the cutting parts can cut the raw material bags in the rotating process so that the raw material bags generate openings capable of allowing raw materials to leak out; moreover, as the gap is arranged between the adjacent conveying rollers in the conveying roller set, the raw materials leaked from the raw material bag can fall through the gap; the raw material bag emptied of raw materials is conveyed to a waste outlet through a conveying roller set and discharged out of the closed box. The conveying roller set can replace the manual work to unpack and throw the material bag to unpack and throw the material link and go on in the closed box, the closed box can prevent raw materials raise dust out-diffusion, avoids the staff to contact raw materials raise dust, and then avoids the raw materials raise dust to harm staff healthy.

Drawings

FIG. 1 is a schematic cross-sectional view of an unpacking device according to an embodiment of the utility model;

FIG. 2 is a schematic cross-sectional view of a transfer roll set in an embodiment of the utility model;

FIG. 3 is a schematic view of a cross-sectional view of a bale plucking mechanism in an axial direction perpendicular to a conveying roller, according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a bale plucking mechanism in an axial direction parallel to a conveyor roller, according to an embodiment of the present utility model;

fig. 5 is a schematic view of a raw material feeding apparatus according to an embodiment of the present utility model.

Description of the reference numerals

1. A closed box; 11. a feeding port; 12. a waste outlet; 13. a feed port; 2. a conveying roller group; 21. a first conveying roller; 22. a second conveying roller; 23. a cutting member; 24. a rapping member; 3. a bag grabbing mechanism; 31. a base; 32. a rotating shaft; 33. a second driving device; 34. a hook claw; 35. an avoidance port; 4. a moving mechanism; 41. a screw rod; 42. a slide block; 43. a limiting plate; 44. a third driving device; 5. a raw material storage tank; 6. and a conveying device.

Detailed Description

Features and exemplary embodiments of various aspects of the present utility model will be described in detail below, and in order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the utility model only and not limiting. It will be apparent to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model.

As shown in fig. 1, the present utility model provides an unpacking device comprising a closed box 1, the wall of the closed box 1 being provided with a feed port 11 for the entrance of bagged raw material, a waste outlet 12 for discharging empty raw material bags, and a feed port 13 for communicating with the feed port of a raw material storage tank 5. A row of conveying roller sets 2 positioned above the feeding port 13 are arranged in the closed box 1, and the conveying roller sets 2 are horizontally arranged between the feeding port 11 and the waste outlet 12 so as to convey bagged raw materials from the feeding port 11 to the waste outlet 12; the conveying rollers of at least one conveying roller set 2, which are close to the feeding port 11, are provided with a cutting part 23 for cutting the raw material bags, a gap for raw material to fall is arranged between adjacent conveying rollers in the conveying roller set 2, and the closed box 1 is also provided with a first driving device for driving the conveying roller set 2 to rotate.

Specifically, the closed casing 1 has a relatively sealed space, and the cutting process of the bagged raw material is performed in the closed casing 1 to prevent the raw material dust from spreading out. The conveying roller set 2 includes a plurality of conveying rollers, and a necessary interval is reserved between adjacent conveying rollers to facilitate the raw material to fall from the interval. The feed end of the transfer roll set 2 is located at the feed port 11 and the discharge end of the transfer roll set 2 is located at the reject outlet 12.

In the present embodiment, the first driving means is capable of driving the conveying roller set 2 to rotate so that the bagged raw material fed into the closed casing 1 from the feed port 11 can be conveyed on the conveying roller set 2. The conveying rollers of the conveying roller set 2, which are close to the feeding port 11, are provided with cutting members 23, so that the cutting members 23 can cut the raw material bag in the rotating process, so that the raw material bag can generate an opening for the raw material to leak out. And since there is a gap between adjacent conveying rollers in the conveying roller set 2, the raw material leaked from the raw material bag can fall through the gap. The raw material bag emptied of raw material is then transported by the transport roller set 2 to the waste outlet 12 for discharge from the closed box 1. So the conveying roller set 2 can replace the manual work to unpack and throw the raw materials bag to unpack and throw the material link and go on in seal case 1, seal case 1 can prevent raw materials raise dust out-diffusion, avoids the staff to contact the raw materials raise dust, and then avoids the raw materials raise dust to harm staff healthy.

In some embodiments, the first driving means may be mounted on the wall of the closed casing 1, and one of the transfer rollers of the transfer roller set 2, which is a driving roller, is connected to the first driving means. The adjacent conveying rollers are driven by a chain, so that the driving roller can drive other conveying rollers to rotate. Of course, the adjacent conveying rollers can also be meshed and driven by a gear mechanism, so that the driving roller drives other conveying rollers.

As shown in fig. 2, in some embodiments of the present utility model, the conveying roller set 2 includes a plurality of first conveying rollers 21 spaced apart from each other and a plurality of second conveying rollers 22 spaced apart from each other, the first conveying rollers 21 being disposed close to the feed inlet, the second conveying rollers 22 being disposed away from the feed inlet, and the first conveying rollers 21 being provided with cutting members 23.

Specifically, all the first conveying rollers 21 are located between the feed port 11 and the second conveying rollers 22, and all the second conveying rollers 22 are located between the waste outlet 12 and the first conveying rollers 21. That is, the first conveying roller 21 is located at the front side of the second conveying roller 22 so that the raw material bag is cut a plurality of times at the feeding end of the conveying roller set 2.

In some embodiments, the conveyor roller set 2 has 11 conveyor rollers; the first 4 transfer rollers near the feed port 11 are first transfer rollers 21, and the last 7 transfer rollers far from the feed port 11 are second transfer rollers 22 in the direction from the feed port 11 to the waste outlet 12.

In some embodiments of the present utility model, a plurality of cutting members 23 are provided on each of the first conveying rollers 21, which are spaced apart in the axial direction of the first conveying rollers 21.

In particular, the plurality of cutting members 23 are capable of cutting the bag of material more open, on the one hand to speed up the fall of material from the bag of material and on the other hand to facilitate emptying of the bag of material.

In some embodiments of the utility model, the cutting member 23 is provided as an annular blade encircling the first transfer roller 21, the radial direction of the annular blade coinciding with the radial direction of the first transfer roller 21.

Specifically, the inside of the annular blade is connected to the outside of the first conveying roller 21, and the annular blade extends in the vertical space. The annular blade can cut the raw material bag into a linear opening in the rotating process so that raw material leaks from the raw material bag.

In some embodiments, the cutting member 23 may also be a rod extending in the radial direction of the first transfer roller 21, one end of the rod being connected to the first transfer roller 21, and the other end of the rod being provided in a sharp shape capable of puncturing the raw material bag. In other embodiments, the cutting member 23 may also be provided as a fan blade.

In some embodiments of the present utility model, the second transfer roller 22 is provided with a plurality of rapping members 24 spaced apart along the circumference of the second transfer roller 22.

Specifically, the rapping member 24 is capable of rapping the raw material bag to expedite the discharge of raw material from the raw material bag. Preferably, a plurality of rapping members 24 are mounted to the second transfer roller 22 in a centrosymmetric manner.

As shown in fig. 2, in some embodiments of the present utility model, the rapping member 24 is provided as a rapping plate having a length extending in the axial direction of the second transfer roller 22 and a width extending in the radial direction of the second transfer roller 22.

Specifically, the length of the rapping plate is identical to the length of the second transfer roller 22, so that the rapping plate is capable of sufficiently rapping the raw material bag.

In some other embodiments, the rapping member 24 may also be a spherical protrusion, as the utility model is not limited.

As shown in fig. 1 to 4, in some embodiments of the present utility model, a bale plucker 3 for pinching or releasing the raw material bags and a moving mechanism 4 for driving the bale plucker 3 to move linearly along the arrangement direction of the conveying roller set 2 are further provided in the closed box 1, and the bale plucker 3 is located above the conveying roller set 2.

Specifically, after the bagged raw materials enter the conveying roller set 2 from the feeding port 11, the bale plucker mechanism 3 can grab the bagged raw materials and lift the bagged raw materials upwards for a certain distance, so that the bottom of the raw material bag is conveniently cut by the cutting component 23, and meanwhile, the raw materials fall from the raw material bag conveniently. The moving mechanism 4 can drive the bale plucker 3 to move from the feeding port 11 to the waste outlet 12, and when the bale plucker 3 moves above the second transfer roller 22, the rapping member 24 rapps the raw material bags to discharge the residual raw material in the raw material bags. After the bale plucker mechanism 3 moves to the waste outlet 12, the bale plucker mechanism 3 is able to release the raw material bags so that the raw material bags can enter the waste outlet 12.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the bale plucking mechanism 3 includes a base 31, two rotating shafts 32, a second driving device 33, and two hooking claws 34. The base 31 with hold the chamber is installed in moving mechanism 4, the bottom of base 31 is equipped with two along the axial interval distribution of the transfer roller of transfer roller group 2 and with hold the mouth 35 of dodging of chamber intercommunication respectively, two pivots 32 are installed in holding the chamber along the axial horizontal interval of the transfer roller of transfer roller group 2, two are set up to the claw 34 of colluding of C shape respectively with two pivots 32 one-to-one, collude the head end of claw 34 and be connected with pivot 32, collude the terminal of claw 34 and dodge mouthful 35 department downwardly extending that corresponds, two end that collude claw 34 are relative each other in the axial of the transfer roller of transfer roller group 2. The second driving mechanism mounted on the base 31 can drive the two rotating shafts 32 to axially rotate so that the ends of the two hooking claws 34 are close to or far from each other.

Specifically, the second driving means 33 is reversely driven so that the distal ends of the two claws 34 are separated from each other and spread out by a sufficient width. After the bagged raw material enters the feeding end of the conveying roller set 2 from the feeding port 11, the second driving device 33 is driven forward so that the tail ends of the two hook claws 34 move toward each other and penetrate into the raw material bag. Meanwhile, in the process of rotating the hook claw 34 in opposite directions, the hook claw 34 can lift the raw material bag upwards to lift the raw material bag to a certain height, so that the raw material bag is conveniently cut by the cutting component 23. The moving mechanism 4 then drives the bale plucker 3 to move towards the waste outlet 12, and the rapping member 24 will rap the raw material bags. When the raw material bag moves to the waste outlet 12, the second driving means 33 is reversely driven to separate the distal ends of the two claws 34 from each other, the claw 34 penetrating the raw material bag is separated from the raw material bag, and the raw material bag is released by the claw 34, so that the raw material bag can fall into the waste outlet 12. Of course, in the process that the hook claw 34 is separated from the raw material bag, a portion of the bottom of the base 31 located between the two avoidance openings 35 can form a barrier for the raw material bag, so that the raw material bag can be separated smoothly. Of course, to facilitate gripping of the bag, the distal end of the pawl 34 is configured to facilitate penetration of the sharp end of the bag.

In this embodiment, after the cutting member 23 cuts the raw material bag, most of the raw material leaks out, but a small amount of raw material participates in the raw material bag, and the remaining raw material can be discharged through the cooperation of the second conveying roller 22, the moving mechanism 4 and the bale plucker mechanism 3, so that the raw material waste is avoided. In some embodiments, the top of the base 31 is provided with two top openings that can clear the hooks 34 to allow the hooks 34 to open at as large an angle as possible.

In some embodiments, the second driving means 33 may be a rotary cylinder. One gear is mounted to an end of each rotating shaft 32, an axis of the rotating shaft 32 coincides with an axis of the gear, and the two gears are meshed with each other. The rotary cylinder is connected with one of the gears, and the gear is a driving gear. When the rotary cylinder rotates, the driving gear drives the other gear to rotate so that the hook claw 34 vertically rotates.

In some embodiments, the bale plucker 3 may take other forms, such as a bale plucker having a publication number CN207943560U, which is not limiting.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the moving mechanism 4 includes a screw 41, a slider 42, a limiting plate 43, and a third driving device 44. The screw 41 and the limiting plate 43 are installed in the closed box 1, the lengths of the screw 41 and the limiting plate 43 extend along the arrangement direction of the conveying roller set 2, the limiting plate 43 is located right above the screw 41, the sliding block 42 is installed on the screw 41, the top surface of the sliding block 42 is in contact with the bottom surface of the limiting plate 43, and the third driving device 44 is installed in the closed box 1. The third driving device 44 can drive the screw 41 to rotate circumferentially so as to reciprocate the slider 42 along the screw 41.

Specifically, the slider 42 is provided with a horizontally extending through hole, the screw rod 41 is inserted into the through hole, an internal thread is arranged in the through hole, an external thread is arranged on the outer wall of the screw rod 41, and the external thread and the internal thread are in threaded fit. The limiting plate 43 can limit the axial rotation of the slider 42. The slider 42 can move linearly along the screw 41 when the third driving means 44 drives the screw 41 to rotate.

In some other embodiments, the moving structure comprises an air cylinder, a guide rod and a moving block, wherein the guide rod is movably arranged in the moving block in a penetrating way, two ends of the guide rod are respectively connected with the wall of the closed box 1, the air cylinder is arranged on the wall of the closed box 1, and the air cylinder can drive the moving block to linearly move along the guide rod. Of course, the moving mechanism 4 may be other ways, and the present utility model is not limited thereto.

In some embodiments of the present utility model, transparent windows are further provided at the wall of the closed box 1 to facilitate the observation of the operation of the components in the closed box 1.

In some embodiments, the enclosure 1 is also in communication with a bag-type dust collector, which is capable of absorbing raw dust generated within the enclosure 1. The bag-type dust collector is a conventional device in the field, and the structure and the raw materials of the bag-type dust collector are not repeated.

In some embodiments, the portion of the closed casing 1 between the transfer roll set 2 and the feed opening 13 increases gradually in width from bottom to top. That is, the wall of the closed casing 1 between the conveying roller group 2 and the feed port 13 is an inclined casing wall so that the raw material can slide down the inclined casing wall into the raw material storage tank 5.

As shown in fig. 5, the present utility model further provides a raw material feeding device, which includes a raw material storage tank 5 and the unpacking device of the above embodiment, the closed box 1 is located above the raw material storage tank 5, and the feeding port 13 is communicated with the feeding port of the raw material storage tank 5.

Specifically, when the bagged raw material enters the conveying roller set 2, the cutting member 23 cuts the raw material bag to form an opening, and the raw material falls into the raw material storage tank 5 through the opening, the gap between the conveying rollers, the feed port 13 and the feed port in order.

In some embodiments of the utility model, as shown in fig. 5, the material delivery device comprises a conveying device 6, and the discharge end of the conveying device 6 is located outside the feeding port 11.

Specifically, the conveying device 6 can convey the bagged raw materials to the feeding port 11 for outputting, so as to avoid manual conveying with high strength. Of course, the conveyor 6 may employ a device commonly known in the art, such as a large-inclination conveyor of publication number CN211811785U or a conveyor belt device of publication number CN 216037019U.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely a preferred embodiment of the utility model, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and that, for a person skilled in the art, modifications, adaptations or variations may be made without departing from the principles of the present utility model, and the above technical features may be combined in any suitable manner; such modifications, variations and combinations, or direct application of the concepts and aspects of the utility model in other applications without modification, are contemplated as falling within the scope of the utility model.

Claims (10)

1. The unpacking device is characterized by comprising a closed box (1), wherein the wall of the closed box (1) is provided with a feeding port (11) for the bagged raw materials to enter, a waste outlet (12) for discharging empty raw material bags and a feeding port (13) communicated with the feeding port of a raw material storage tank (5);

A row of conveying roller sets (2) positioned above the feeding port (13) are arranged in the closed box (1), and the conveying roller sets (2) are horizontally arranged between the feeding port (11) and the waste outlet (12) so as to convey bagged raw materials from the feeding port (11) to the waste outlet (12); the conveying rollers of at least one conveying roller set (2) close to the feeding port (11) are provided with cutting components (23) for cutting open raw material bags, gaps for raw materials to fall down are formed between adjacent conveying rollers in the conveying roller set (2), and the sealing box (1) is further provided with a first driving device for driving the conveying roller set (2) to rotate.

2. Unpacking device according to claim 1, characterized in that said conveyor roller group (2) comprises a plurality of first conveyor rollers (21) spaced apart and a plurality of second conveyor rollers (22) spaced apart, said first conveyor rollers (21) being arranged close to said feed opening, said second conveyor rollers (22) being arranged distant from said feed opening, said first conveyor rollers (21) being provided with said cutting means (23).

3. Unpacking device according to claim 2, characterized in that each of said first transfer rollers (21) is provided with a plurality of said cutting members (23) spaced apart along the axial direction of said first transfer roller (21).

4. A unpacking device according to claim 3, characterized in that the cutting member (23) is arranged as an annular blade encircling the first conveyor roller (21), the radial direction of the annular blade coinciding with the radial direction of the first conveyor roller (21).

5. Unpacking device according to claim 2, characterized in that said second transfer roller (22) is provided with a plurality of rapping members (24) distributed at intervals along the circumference of said second transfer roller (22); and/or

The rapping member (24) is arranged as a rapping plate having a length extending in the axial direction of the second transfer roller (22) and a width extending in the radial direction of the second transfer roller (22).

6. Unpacking device according to claim 5, characterized in that the closed box (1) is further provided with a bale plucker (3) for clamping or releasing the raw material bags and a moving mechanism (4) for driving the bale plucker (3) to move linearly along the arrangement direction of the conveying roller set (2), wherein the bale plucker (3) is positioned above the conveying roller set (2).

7. The unpacking device according to claim 6, wherein the bag grabbing mechanism (3) comprises a base (31), two rotating shafts (32), a second driving device (33) and two hooking claws (34);

The base (31) with the accommodating cavity is arranged on the moving mechanism (4), two avoiding openings (35) which are distributed at intervals along the axial direction of the conveying rollers of the conveying roller group (2) and are respectively communicated with the accommodating cavity are formed in the bottom of the base (31), two rotating shafts (32) are arranged in the accommodating cavity at intervals along the axial direction of the conveying rollers of the conveying roller group (2), two C-shaped hooking claws (34) are respectively in one-to-one correspondence with the two rotating shafts (32), the head ends of the hooking claws (34) are connected with the rotating shafts (32), and the tail ends of the two hooking claws (34) are opposite to each other in the axial direction of the conveying rollers of the conveying roller group (2);

the second driving device (33) arranged on the base (31) can drive the two rotating shafts (32) to rotate circumferentially so as to enable the tail ends of the two hook claws (34) to be close to or far from each other.

8. Unpacking device according to claim 7, characterized in that said moving mechanism (4) comprises a screw (41), a slide (42), a limiting plate (43) and third driving means (44);

The screw rod (41) and the limiting plate (43) are arranged in the closed box (1), the lengths of the screw rod (41) and the limiting plate (43) extend along the arrangement direction of the conveying roller set (2), the limiting plate (43) is positioned right above the screw rod (41), the sliding block (42) is arranged on the screw rod (41), the top surface of the sliding block (42) is in contact with the bottom surface of the limiting plate (43), and the third driving device (44) is arranged on the closed box (1);

The third driving device (44) can drive the screw rod (41) to rotate circumferentially so as to enable the sliding block (42) to reciprocate along the screw rod (41).

9. A raw material feeding device, characterized by comprising a raw material storage tank (5) and an unpacking device according to any one of claims 1-8, wherein the closed box (1) is located above the raw material storage tank (5), and the feeding port (13) is communicated with the feeding port of the raw material storage tank (5).

10. The raw material feeding device according to claim 9, characterized in that the raw material feeding device comprises a conveying device (6), and the discharge end of the conveying device (6) is positioned outside the feeding port (11).