CN108789909B

CN108789909B - Internal mixer

Info

Publication number: CN108789909B
Application number: CN201710295422.XA
Authority: CN
Inventors: 袁森; 吴航; 贺盟; 唐家烨; 柏爱华
Original assignee: YANCHENG SHENYUAN PLASTIC CO Ltd
Current assignee: YANCHENG SHENYUAN PLASTIC CO Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2020-08-18
Anticipated expiration: 2037-04-28
Also published as: CN108789909A

Abstract

The invention discloses an internal mixer, which comprises a mixer body, wherein an internal mixing chamber is arranged on the mixer body, an automatic feeding device is arranged on the outer side wall of the internal mixing chamber, a through groove for the automatic feeding device to enter and exit is arranged on the side wall of the internal mixing chamber, a switch door is arranged on the through groove in a sliding manner and realizes the opening and closing at the through groove through a positioning mechanism, the automatic feeding device comprises a driving air cylinder fixedly arranged on the internal mixing chamber, a piston rod of the driving air cylinder is fixedly connected with a driving motor, an output shaft of the driving motor is fixedly connected with a driving screw rod, a driven sliding block is connected with the driving screw rod in a threaded manner, a loading mechanism for placing materials is fixedly arranged on the driven sliding block, a limiting rod penetrates through the driving motor far away from the output shaft in a sliding manner, the length of the limiting rod is shorter than that of the driving screw rod, limiting plates are fixedly arranged at, the switch door is provided with a through hole for sliding and penetrating through the driving screw and the limiting rod.

Description

Internal mixer

Technical Field

The invention relates to the field of rubber processing equipment, in particular to an internal mixer.

Background

Internal mixers, also known as kneaders, are mainly used for plastication and mixing of rubber; the internal mixer is a machine which is provided with a pair of rotors with specific shapes and rotating relatively and performs plastication and mixing on polymer materials in a clearance manner under a closed state with adjustable temperature and pressure, and mainly comprises an internal mixing chamber, the rotors, a rotor sealing device, a feeding and pressing device, a discharging device, a transmission device, a machine base and the like; after raw rubber and a compounding agent are loaded into an internal mixing chamber from a feeding hopper, a material door is closed, an upper top bolt of a material pressing device is pressed down, two rotors in the internal mixing chamber rotate oppositely at different or the same speed, and the loaded rubber material is subjected to continuous stirring, roll bending and strong kneading action between the rotors and the internal mixing chamber to generate oxidation chain scission and increase plasticity; meanwhile, the rubber material is dispersed and uniformly mixed under the shearing action, so that the purpose of rubber mixing is achieved.

Because the banbury mixer is mainly used for plastication and mixing of rubber, in the refining process of sizing material, at first need to drop into a large amount of powder granule to fill reinforcement nature batching toward the banburying chamber, general operation process makes working cylinder keep away from the feed inlet department at banburying chamber top, throw the material in the woven bag into the banburying chamber through the feed inlet at banburying chamber top again, because there is the difference in height between banburying chamber feed inlet and the banburying chamber bottom appearance chamber, when powder granule batching was put into the banburying chamber, some powder particles that the quality is very little can be diffused and drift to the air around through the feed inlet of banburying chamber in this in-process, not only harm workman's health, and cause the material waste.

Disclosure of Invention

The invention aims to provide an internal mixer which can better reduce the scattering of powder particles and reduce the health hazard to workers and the waste of materials.

The technical scheme includes that the internal mixer comprises a mixer body, an internal mixing chamber is arranged on the mixer body, an automatic feeding device is arranged on the outer side wall of the internal mixing chamber, a through groove for the automatic feeding device to enter and exit is formed in the side wall of the internal mixing chamber, a switch door is arranged on the through groove in a sliding mode and is opened and closed at the through groove through a positioning mechanism, the automatic feeding device comprises a driving air cylinder fixedly arranged on the internal mixing chamber, a piston rod of the driving air cylinder is fixedly connected with a driving motor, an output shaft of the driving motor is fixedly connected with a driving screw rod, a driven sliding block is connected onto the driving screw rod in a threaded mode, a loading mechanism for placing materials is fixedly arranged on the driven sliding block, a limiting rod penetrates through the position, far away from the output shaft, of the driving motor, the length of the limiting rod is shorter than that of the driving screw rod, the utility model discloses a switch door, including the switch door, the outer peripheral wall of gag lever post is located driving motor's both ends department and all is fixed with spacing piece on the outer peripheral wall of gag lever post, be equipped with the work hole that supplies the gag lever post to slide to run through on the driven sliding block, be equipped with the through-hole that supplies initiative screw rod and gag lever post to slide to run through on the switch door.

By adopting the technical scheme, before plastication of materials is required, the switch door is opened, the switch door is in a normally open state through the positioning mechanism, the woven bag filled with powder and granular ingredients is placed on the driven sliding block, and the woven bag is fixed on the driven sliding block through the loading mechanism, so that the ingredients cannot be easily toppled to cause leakage; then, the air cylinder is driven to work, so that the driving screw rod extends into the mixing chamber, the driving motor works, the driving screw rod rotates, the driven sliding block performs linear motion sliding towards the inside of the mixing chamber on the screw rod under the action of the limiting rod, when the driven sliding block slides to the inside of the mixing chamber, the switch door closes the through groove, when the driven sliding block slides to be separated from the connection with the limiting rod, the driven sliding block rotates along with the rotation of the driving screw rod, in the rotating process, the powder particle ingredient loaded in the woven bag is poured into the mixing chamber, and the automatic feeding work of the ingredient is completed; this kind of throw material device automatically can make the powder batching accomplish in the mixing chamber and throw the material to the top of mixing chamber is sealed by working cylinder, and logical groove department is also sheltered from by the switch door, thereby has significantly reduced the condition emergence that the powder disperses to mixing chamber outside, has guaranteed staff's health, and has reduced the waste of batching.

The invention is further configured to: loading mechanism is including fixed setting at the protective frame that driven sliding block surrounded on the surface and with driven sliding block, the bottom of each side of protective frame all is equipped with the breach that supplies braided bag angle limit to stretch out, it all slides and is connected with the locking Assembly with braided bag angle limit locking to be close to breach department on the driven sliding block.

Through adopting above-mentioned technical scheme, the braided bag that the powder was arranged the material will be equipped with is placed on driven sliding block and is located the protective frame, the protective frame can realize the guard action to the braided bag, avoid empting of braided bag, later make the angle limit of braided bag stretch out from the breach of protective frame, under locking Assembly's effect, realize the rigidity of braided bag on driven sliding block, when being convenient for driven sliding block rotates together driving screw rod, the smooth quilt of powder batching in the braided bag is emptyd into the banburying indoor, and the braided bag then locks on driven sliding block, can not drop to the banburying indoor, influence plastifying of material.

The invention is further configured to: locking Assembly is including the fixed clamp splice of fixed setting on driven sliding block, it is connected with the slip clamp splice to be close to fixed clamp splice department on the driven sliding block and slide, threaded connection has the locking bolt on the slip clamp splice, when fixed clamp splice and slip clamp splice are arranged in to braided bag angle limit, locking bolt screw thread runs through fixed clamp splice.

Through adopting above-mentioned technical scheme, after each angle limit of braided bag stretches out from the breach of protective frame, make each angle limit be in respectively between fixed clamp splice and the slip clamp splice, later through twisting the locking bolt, drive the slip clamp splice and slide to fixed slider department, and make locking bolt threaded connection on fixed clamp splice, fixed clamp splice and slip clamp splice realize the clamping effect to braided bag angle limit, make the braided bag obtain the locking of position on driven slide splice, guarantee that the braided bag can not fall into in the banburying chamber.

The invention is further configured to: positioning mechanism is including rotating the shackle of connection in switch door bottom, lie in the fixed extension post that supplies the shackle hook cover that is equipped with directly over leading to the groove on the banburying outdoor side wall, the bottom of switch door is equipped with magnet one, the fixed magnet two that is equipped with the actuation of magnet one in the bottom that leads to the inslot wall.

Through adopting above-mentioned technical scheme, when the switch door slided to the top that leads to the groove, directly rotated the shackle, made its hook cover on extending the post, can be in order to realize the switch door fixed at this position, the automatic work of throwing the material device of being convenient for, when realizing the switch door in the closing of leading to the groove department, the mutual adsorption between magnet one and magnet two makes the switch door at the compactness of leading to the groove department and closing, simple structure, convenient operation is quick.

The invention is further configured to: the banburying chamber top is equipped with the collection hopper that supplies crude rubber to get into, it communicates with each other with inside to collect the hopper to run through the banburying chamber, it is fixed with the seedpod shower nozzle to collect the one end that the hopper is located the banburying chamber inside, it is equipped with the booster pump to collect the one end that the hopper is located the banburying chamber outside.

Through adopting above-mentioned technical scheme, in-process in the banburying chamber is thrown into automatically under the effect of automatic feeding device to the powder batching, can pour the crude rubber into in collecting the hopper this moment, make the crude rubber get into in the shower nozzle through collecting the hopper, at this moment under the effect of booster pump, the crude rubber is fast powerful through the shower nozzle and is sprayed into the banburying chamber in, and contact with dispersion at the indoor powder of banburying, fall into the banburying chamber bottom after gluing each other, the speed that the powder batching falls into the banburying chamber bottom completely has been accelerated, when no longer having the powder batching in the banburying chamber, again with need plastify the material put with the banburying indoor can.

The invention is further configured to: the protective frame is characterized in that clamping plates are respectively arranged on a symmetrical inner side wall in the protective frame, and compression springs are fixedly arranged on the surfaces, close to the protective frame, of the clamping plates.

Through adopting above-mentioned technical scheme, under splint and compression spring's effect, can be so that the braided bag inlays in the protective frame and puts more firmly, further guaranteed that the braided bag can not empty.

The invention is further configured to: the two clamping plates are provided with magnetic force which is mutually adsorbed.

Through adopting above-mentioned technical scheme, further strengthened the braided bag at this moment and set the steadiness on this driven sliding block.

The invention is further configured to: and a sealing gasket for sealing the through hole is arranged on one side surface of the driven sliding block close to the switch door.

Through adopting above-mentioned technical scheme, after accomplishing the automation of material and putting in, the initiative screw rod is located the outside of banburying chamber under the effect that drives actuating cylinder, makes driven sliding block slide this moment and contact as to the switch door to make sealed the pad seal the through-hole, guaranteed this internal seal nature of banburying during operation, guaranteed plastify smoothly.

The invention is further configured to: the protection frame and the switch door are transparent.

Through adopting above-mentioned technical scheme, can make things convenient for the staff to observe at any time and master the interior material situation of throwing and the plastication condition of banburying this moment.

In conclusion, the invention has the following beneficial effects:

1. the feeding work of the powder and particle ingredients in the mixing chamber is realized through the automatic feeding device, the condition that the powder and particle drift to the outside of the mixing chamber is effectively reduced, the health of workers is ensured, and the waste of ingredients is reduced;

2. the opening and closing firmness of the opening and closing door at the through groove is realized through a simple structure, and the operation is simple and convenient;

3. the woven bag loaded with the powder ingredient is stably placed on the driven sliding block through various simple structures, and the phenomenon of toppling is avoided;

4. the characteristic that the combined quality of the crude rubber and the powder particle ingredients becomes heavy is utilized to ensure that the powder particle ingredients are rapidly precipitated at the bottom of the banburying chamber, thereby improving the working efficiency;

5. the sealing gasket on the driven sliding block can seal the through hole, and the sealing performance of a plastication company in the mixing chamber is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the internal structure of the internal mixer in example 1, and is also a schematic diagram of the automatic feeding device extending into the mixing chamber;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a top view of the internal mixer of example 1;

FIG. 4 is a partial enlarged view of B in FIG. 3;

FIG. 5 is a schematic structural view of example 2.

In the figure: 1. a body; 11. a working rotor; 12. a working cylinder; 2. an internal mixing chamber; 21. a through groove; 22. opening and closing the door; 221. a through hole; 23. a positioning mechanism; 231. a shackle; 232. extending the column; 233. a magnet I; 234. a second magnet; 3. an automatic feeding device; 31. a driving cylinder; 32. a piston rod; 33. a drive motor; 34. an output shaft; 35. a driving screw; 36. a driven sliding block; 361. a working hole; 362. a gasket; 37. a loading mechanism; 371. a protective frame; 372. a notch; 373. a locking assembly; 3731. fixing the clamping block; 3732. a sliding clamping block; 3733. locking the bolt; 374. a splint; 375. a compression spring; 38. a limiting rod; 381. a limiting sheet; 4. a collecting hopper; 41. a shower nozzle; 42. a booster pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: an internal mixer is shown in figure 1 and mainly comprises a machine body 1, wherein an internal mixing chamber 2 is arranged on the machine body 1, a working rotor 11 is arranged in the internal mixing chamber 2, and a working cylinder 12 is arranged right above the internal mixing chamber 2; make working cylinder 12 keep away from mixing chamber 2 department, mixing chamber 2's opening communicates with each other with the outside, through mixing chamber 2's opening with batching, crude rubber and material drop into mixing chamber 2, press down device's last top bolt, working cylinder 12 stretches into and realizes the pressure material effect to material etc. in mixing chamber 2, two rotors revolve with different or same speed in opposite directions in mixing chamber 2, the material of packing into is between the rotor, receive continuous stirring between rotor and mixing chamber 2, roll over and strong kneading effect, produce the oxidation chain scission, and homogeneous mixing, thereby reach the mesh of mixing rubber.

At this time, as shown in fig. 1-4, an automatic feeding device 3 is arranged on the outer side wall of the mixing chamber 2, a through groove 21 for the automatic feeding device 3 to enter and exit is arranged on the side wall of the mixing chamber 2, a switch door 22 is slidably arranged on the through groove 21, a hook ring 231 structure is rotatably connected to the middle position of the bottom of the switch door 22, an extension column 232 is fixedly arranged on the outer side wall of the mixing chamber 2 right above the through groove 21, a first magnet 233 is arranged at the bottom of the switch door 22, and a second magnet 234 attracted with the first magnet 233 is fixedly arranged at the bottom of the inner side wall of the through groove 21; when the switch door 22 is in a closed state at the through groove 21, the first magnet 233 and the second magnet 234 attract each other, so that the tightness of the switch door 22 at the through groove 21 is ensured, in order to ensure the tightness of the switch door 22 at the through groove 21, an embedding groove for embedding the switch door 22 can be arranged at the bottom of the through groove 21, the bottom of the switch door 22 is embedded in the front groove, and meanwhile, the first magnet 233 and the second magnet 234 attract each other.

As shown in fig. 1 and 2, the automatic feeding device 3 includes a driving cylinder 31 fixedly disposed on the mixing chamber 2, a piston rod 32 of the driving cylinder 31 is fixedly connected to a driving motor 33, an output shaft 34 of the driving motor 33 is fixedly connected to a driving screw 35, the driving screw 35 is threadedly connected to a driven sliding block 36, the driven sliding block 36 is fixedly provided with a loading mechanism 37 for placing materials, meanwhile, a position of the driving motor 33 far away from the output shaft 34 is slidably penetrated by a limiting rod 38, the length of the limiting rod 38 is shorter than that of the driving screw 35, two ends of the driving motor 33 on the outer circumferential wall of the limiting rod 38 are both fixedly provided with limiting pieces 381, and when the limiting rod 38 is penetratingly disposed in the driving motor 33, that is, under the action of the limiting pieces 381, the limiting rod 38 can only achieve sliding between the two limiting pieces 381; and a working hole 361 for the limiting rod 38 to slide and penetrate is further arranged on the driven sliding block 36, the limiting rod 38 slides and penetrates through the driving motor 33, meanwhile, the working hole 361 is also penetrated to realize sliding connection with the driven sliding block 36, and a through hole 221 for the driving screw 35 and the limiting rod 38 to slide and penetrate is arranged on the switch door 22.

As shown in fig. 2 and 4, the loading mechanism 37 includes a protection frame 371 fixedly disposed on the surface of the driven sliding block 36 and enclosing the driven sliding block 36, a notch 372 for extending the corner edge of the woven bag is disposed at the bottom of each side of the protection frame 371, a locking component 373 for locking the corner edge of the woven bag is slidably connected to the driven sliding block 36 near the notch 372, the locking component 373 includes a fixed clamping block 3731 fixedly disposed on the driven sliding block 36, a sliding clamping block 3732 is slidably connected to the driven sliding block 36 near the fixed clamping block 3731, a locking bolt 3733 is threadedly connected to the sliding clamping block 3732, and when the corner edge of the woven bag is disposed between the fixed clamping block 3731 and the sliding clamping block 3732, the locking bolt 3733 threadedly penetrates through the fixed clamping block 3731.

The specific implementation mode is as follows: before the plastication work of material needs to be carried out, make operating cylinder 12 realize the sealing at banburying chamber 2 top, open switch door 22, control switch door 22 and upwards slide and make banburying chamber 2 inside communicate with each other with the outside promptly, the shackle 231 of switch door 22 bottom rotates, makes its hitch on the extension post 232 on banburying chamber 2 lateral wall, and switch door 22 keeps fixed in this position this moment to realized opening completely of logical groove 21 department, can supply automatic feeding device 3's entering.

The woven bag filled with the powder-like ingredients is placed on the driven sliding block 36 and is positioned in the protective frame 371, and at the moment, under the action of the protective frame 371, the woven bag filled with the materials can be prevented from being placed on the driven sliding block 36 and toppled over, so that the ingredients in the woven bag are prevented from leaking; because current braided bag bottom has sealed angle limit, place the braided bag into on the driven sliding block 36 back, make two angle limits of braided bag run through the breach 372 department of protection frame 371 bottom, the angle limit outwards stretches out the back from breach 372 department, make it be located between fixed clamp splice 3731 and the slip clamp splice 3732, the slip clamp splice 3732 that slides this moment, make it be close to fixed clamp splice 3731 and realize that the angle limit is by the centre gripping between two clamp splices, later twist and move locking bolt 3733, make its while screw thread run through slip clamp splice 3732 and fixed clamp splice 3731, realize the locking between two clamp splices, the centre gripping fastening of angle limit between two clamp splices has also been realized, can realize that the connection of braided bag on driven sliding block 36 is fixed this moment.

Controlling the driving cylinder 31 to work, the piston rod 32 extends out from the driving cylinder 31 to drive the driving motor 33 to slide towards the mixing chamber 2 for a distance, when the piston rod 32 completely extends out from the driving cylinder 31, a part of the driving screw 35 connected with the output shaft 34 of the driving motor 33 penetrates through the through groove 21 on the mixing chamber 2 to enter the mixing chamber 2, at this time, firstly, the limit sheet 381 on the limit rod 38 close to one end of the mixing chamber 2 is abutted against the driving motor 33, then the driving motor 33 is controlled to work, the driving screw 35 and the output shaft 34 rotate synchronously, because the driven sliding block 36 is in threaded connection with the driving screw 35, and at this time, the limit rod 38 penetrates through the driven sliding block 36, under the action of the limit rod 38, the driven sliding block 36 makes a linear motion on the screw towards the mixing chamber 2, when the driven sliding block 36 slides into the mixing chamber 2, the shackle 231 is rotated to be separated from the sleeve hook of the extension column 232, the switch door 22 slides downwards, the bottom of the switch door is embedded into the embedding groove at the bottom of the through groove 21, the first magnet 233 and the second magnet 234 attract each other, the switch door 22 is closed by the through groove 21 and is relatively fixed at the position, and the switch door 22 is closed without being abutted against the driving screw 35 and the limiting rod 38 due to the fact that the through hole 221 for the limiting rod 38 and the driving screw 35 to penetrate through is formed in the switch door 22.

In the continuous rotation process of the driving screw 35, the driven sliding block 36 gradually slides to be separated from the connection with the limiting rod 38, at the moment, the driven sliding block 36 rotates along with the rotation of the driving screw 35, when the driven sliding block 36 rotates 180 degrees, the woven bag fixed on the driven sliding block 36 also rotates 180 degrees, at the moment, powder ingredients in the woven bag smoothly pour into the mixing chamber 2 from the woven bag, and the woven bag cannot fall into the mixing chamber 2 under the action of the locking component 373;

the automatic feeding work of the powder and particle ingredients is realized, in the process, the top of the mixing chamber 2 is closed, and the through groove 21 of the mixing chamber 2 is also shielded by the switch door 22, so that the powder and particle ingredients are poured into the mixing chamber 2, the conditions that the powder and particle fly out of the mixing chamber 2 and diffuse into the ambient air are greatly reduced, the health of workers cannot be greatly influenced, and the ingredient waste cannot be caused.

In this embodiment, the protection frame 371 and the switch door 22 are both transparent, so that the worker can conveniently master the feeding status in the banburying chamber 2.

When the ingredient feeding is finished and the scattered powder ingredient is less, the switch door 22 is opened again, the driving motor 33 is controlled to work, the driving screw 35 rotates reversely to drive the driven sliding block 36 to rotate to be horizontally placed, at the moment, the limiting rod 38 slides forwards, when the limit piece 381 at the position where the limit rod 38 is far away from the mixing chamber 2 is abutted against the driving motor 33, one end of the limit rod 38 far away from the driving motor 33 penetrates through the working hole 361 on the driven sliding block 36 again to be connected with the driven sliding block 36, and in the process that the driving screw 35 continuously rotates reversely under the action of the driving motor 33, the driven sliding block 36 can do linear motion far away from the interior of the mixing chamber 2, when the driven sliding block 36 slides out of the mixing chamber 2, at this time, raw rubber and materials can be placed on the driven sliding block 36 in sequence, and the automatic feeding work of the raw rubber and the materials can be realized in the communication mode.

As shown in fig. 1 and 3, after all the materials are in the mixing chamber 2, the switch door 22 is closed, and the driven sliding block 36 is controlled to slide to a position close to the switch door 22, and at this time, a sealing gasket 362 for sealing the through hole 221 is arranged on one side surface of the driven sliding block 36 close to the switch door 22, so that the sealing performance inside the mixing chamber 2 can be realized.

As shown in fig. 2 and 4, in the present embodiment, clamping plates 374 with magnetic force for attracting each other are respectively disposed on a symmetrical inner side wall in the protection frame 371, and a compression spring 375 is fixedly disposed on the surface of the clamping plate 374 near the protection frame 371.

Under the effect of splint 374 and compression spring 375, can make the embedding of braided bag in protective frame 371 firmer to can be applicable to the embedding of braided bag not of uniform size on driven sliding block 36.

Example 2: an internal mixer is different from the one in embodiment 1 in that, as shown in fig. 5, a collection hopper 4 for raw rubber is provided at the top of an internal mixing chamber 2, the collection hopper 4 penetrates the internal mixing chamber 2 to communicate with the inside of the internal mixing chamber 2, a shower nozzle 41 is fixedly provided at one end of the collection hopper 4 located inside the internal mixing chamber 2, and one end of the collection hopper 4 located outside the internal mixing chamber 2 is connected with a booster pump 42.

In-process that is thrown into mixing chamber 2 automatically under automatic feeding device 3's effect as the powder batching, just can pour crude rubber into in collecting hopper 4 this moment, make crude rubber pass through collecting hopper 4 and get into in shower nozzle 41, and under booster pump 42's effect, crude rubber is fast forcefully sprayed into mixing chamber 2 through shower nozzle 41 in, and contact with the powder of dispersion in mixing chamber 2, fall into mixing chamber 2 bottom after gluing each other, accelerated the speed that the powder batching falls into mixing chamber 2 bottom completely, when no longer having the powder batching in mixing chamber 2, again will need plastify the material put with mixing chamber 2 in can.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. An internal mixer: including organism (1), be equipped with mixing chamber (2) on organism (1), its characterized in that: the external side wall of the internal mixing chamber (2) is provided with an automatic feeding device (3), the side wall of the internal mixing chamber (2) is provided with a through groove (21) for the automatic feeding device (3) to pass in and out, the through groove (21) is provided with a switch door (22) in a sliding manner, the switch door (22) is opened and closed at the through groove (21) through a positioning mechanism (23), the automatic feeding device (3) comprises a driving cylinder (31) fixedly arranged on the internal mixing chamber (2), a piston rod (32) of the driving cylinder (31) is fixedly connected with a driving motor (33), an output shaft (34) of the driving motor (33) is fixedly connected with a driving screw rod (35), the driving screw rod (35) is connected with a driven sliding block (36) in a threaded manner, a loading mechanism (37) for placing materials is fixedly arranged on the driven sliding block (36), and a limiting rod (38) penetrates through the driving motor (33) in a sliding manner far away from the output shaft (34), the length of the limiting rod (38) is shorter than that of the driving screw rod (35), limiting pieces (381) are fixed at two ends of the driving motor (33) on the outer circumferential wall of the limiting rod (38), a working hole (361) for the limiting rod (38) to slide through is formed in the driven sliding block (36), and a through hole (221) for the driving screw rod (35) and the limiting rod (38) to slide through is formed in the switch door (22); loading mechanism (37) including fixed guard frame (371) that sets up on driven sliding block (36) surface and will be surrounded by driven sliding block (36), the bottom of each side of guard frame (371) all is equipped with breach (372) that supply braided bag angle limit to stretch out, it is connected with locking Assembly (373) with braided bag angle limit locking to be close to breach (372) department and all slides on driven sliding block (36).

2. An internal mixer according to claim 1, characterized in that: locking subassembly (373) including fixed clamp splice (3731) of fixed setting on driven sliding block (36), it is connected with slip clamp splice (3732) to slide to be close to fixed clamp splice (3731) on driven sliding block (36), threaded connection has locking bolt (3733) on slip clamp splice (3732), when fixed clamp splice (3731) and slip clamp splice (3732) were placed in to braided bag angle limit between, locking bolt (3733) screw thread runs through fixed clamp splice (3731).

3. An internal mixer according to claim 1, characterized in that: positioning mechanism (23) are including rotating shackle (231) of connecting in switch door (22) bottom, lie in fixed extension post (232) that supply shackle (231) gum cover that is equipped with directly over logical groove (21) on banburying room (2) lateral wall, the bottom of switch door (22) is equipped with magnet one (233), the fixed magnet two (234) that are equipped with magnet one (233) actuation in bottom that leads to groove (21) inside wall.

4. An internal mixer according to claim 1, characterized in that: mixing chamber (2) top is equipped with collection hopper (4) that supply crude rubber to get into, it communicates with each other with inside to run through mixing chamber (2) to collect hopper (4), it is fixed that collection hopper (4) are located mixing chamber (2) inside one end is equipped with seedpod of lotus shower nozzle (41), it is equipped with booster pump (42) to collect hopper (4) and be located mixing chamber (2) outside one end.

5. An internal mixer according to claim 1, characterized in that: clamping plates (374) are respectively arranged on symmetrical inner side walls in the protective frame (371), and compression springs (375) are fixedly arranged on the surfaces, close to the protective frame (371), of the clamping plates (374).

6. An internal mixer according to claim 5, characterized in that: the two clamping plates (374) are provided with magnetic force which is mutually adsorbed.

7. An internal mixer according to claim 1, characterized in that: and a sealing gasket (362) for sealing the through hole (221) is arranged on one side surface of the driven sliding block (36) close to the switch door (22).

8. An internal mixer according to claim 1, characterized in that: the protective frame (371) and the switch door (22) are transparent.