CN212097382U

CN212097382U - High-efficient mixing injection molding machine screw rod

Info

Publication number: CN212097382U
Application number: CN202020453674.8U
Authority: CN
Inventors: 钱松岳
Original assignee: Zhejiang Jinxing Injection Screws Manufacture Co ltd
Current assignee: Zhejiang Jinxing Injection Screws Manufacture Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-08
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a high-efficient mixing injection molding machine screw rod belongs to screw rod technical field. The utility model discloses a fixed head, the feed section, colour mixture section and mixing section, the feed section includes the first body of rod and centers on the first screw thread in the first body of rod outside, the right-hand member of the first body of rod sets firmly on the left surface of fixed head, the colour mixture section includes the second body of rod and centers on second screw thread and third screw thread in the first body of rod outside, the second body of rod sets up the left end at the first body of rod, the right-hand member of second screw thread and the left end of first screw thread link to each other, mixing section includes the third body of rod and centers on fourth screw thread and the fifth screw thread in the third body of rod outside, the third body of rod sets firmly the left end at the second body of rod, be formed with a plurality of groups feeding spiral blind grooves and ejection of compact spiral blind groove between fifth screw thread and the fourth screw thread, the right-hand member and the colour mixture intercommunication of feeding spiral blind groove, the left end and. The utility model discloses can improve melting efficiency to make the material mix ground more even.

Description

High-efficient mixing injection molding machine screw rod

Technical Field

The utility model belongs to the technical field of the screw rod, a high-efficient mixing injection molding machine screw rod is related to.

Background

Screws are used in plastic molding equipment such as plastic profile extruders, injection molding machines, and the like. The screw and the cylinder are core components of the plastic molding equipment, are parts for heating, extruding and plasticizing and are the core of the plastic machine.

The screw rotates in the cylinder of the injection molding machine and mainly functions to convey, compact, melt and plasticize solid plastic particles or plastic powder into a molten state. At present, the existing screw has poor shearing and melting effects on raw materials and additives, so that the raw materials and the additives cannot be fully mixed and melted in a material pipe, the poor mixing performance of the screw cannot ensure that the raw materials and the additives are uniformly mixed, and the quality of a finished product is influenced.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a high-efficient mixing injection molding machine screw rod, can improve the melting efficiency of material to it is more even to make the material mix ground.

The purpose of the utility model can be realized by the following technical proposal:

a high efficiency compounding injection molding machine screw comprising: a fixed head;

a feed section having: the right end of the first rod body is coaxially and fixedly arranged on the left side surface of the fixed head; the first thread surrounds the outer side of the first rod body, and the right end of the first thread is smoothly connected with the left side face of the fixing head;

a split compression section having: the second rod body is coaxially arranged at the left end of the first rod body, the cross section size of the second rod body is larger than that of the first rod body, and the second rod body and the first rod body are in smooth transition; the second thread surrounds the outer side of the second rod body, and the right end of the second thread is connected with the left end of the first thread; a third thread surrounding an outer side of the second rod;

a mixing section having: the third rod body is coaxially and fixedly arranged at the left end of the second rod body; a fourth thread surrounding an outer side of the third rod; the feeding spiral blind groove and the discharging spiral blind groove are separated through the fourth thread, the right end of the feeding spiral blind groove is communicated with the mixing section, and the left end of the discharging spiral blind groove is communicated with the mixing section.

In the screw of the high-efficiency mixing injection molding machine, the distance from the axis of the first rod body to the top of the first thread is equal to the distance from the axis of the second rod body to the top of the second thread.

In the screw of the high-efficiency mixing injection molding machine, the distance from the axis of the second rod body to the top of the second thread is greater than the distance from the axis of the second rod body to the top of the third thread.

In the screw of the high-efficiency mixing injection molding machine, the right end of the third thread and the right end of the second thread intersect.

In the screw of the high-efficiency mixing injection molding machine, the distance from the axis of the first rod body to the top of the first thread is equal to the distance from the axis of the third rod body to the top of the fourth thread.

In the screw rod of the high-efficiency mixing injection molding machine, the height of the fifth thread tooth positioned on the right side of the feeding spiral blind groove is reduced from right to left in sequence.

In the screw rod of the high-efficiency mixing injection molding machine, the outer side of the fixed head is provided with a thread groove.

In foretell high-efficient mixing injection molding machine screw rod, be equipped with cylindric cavity in the first body of rod, be equipped with electric heating wire on the inside wall of cavity, be equipped with the perforation in the fixed head, the right-hand member of fenestrate left end and cavity is linked together, the right-hand member of fenestrate right-hand member through the fixed head, the right-hand member of fixed head can be dismantled and be connected with first dead lever, be equipped with the battery in the first dead lever, the right-hand member of first dead lever is coaxial to be linked firmly the second dead lever, be equipped with the installation cavity in the second dead lever, be equipped with trigger mechanism in the installation cavity, when the second dead lever rotates, trigger mechanism can start electric heating wire, the battery passes through trigger mechanism and.

In the screw of the high-efficiency mixing and injection molding machine, the trigger mechanism comprises:

the two connecting blocks are fixedly arranged on two opposite sides of the mounting cavity respectively, one connecting block is electrically connected with one end of the electric heating wire, and the other connecting block is electrically connected with the other end of the electric heating wire through the storage battery;

the through-hole, the coaxial seting up of through-hole is in the second dead lever, the left end and the installation cavity of through-hole are linked together, it is provided with the slide bar to slide in the through-hole, the left end of slide bar extends to in the installation cavity and the tip has set firmly the connecting plate, the size of connecting plate is greater than the size of through-hole cross section, reset spring has been linked firmly between the left side wall of connecting plate and installation cavity, when reset spring is in normal condition, the right-hand member face of second dead lever is stretched out to the right-hand member of slide bar, when the right-hand member face parallel and level of the right-hand member face of right-hand member and the second dead lever of slide bar.

Compared with the prior art, the utility model has the advantages of it is following:

1. the screw is inserted into the machine barrel, the screw is rotated, the material is pushed to a second rod body on the mixing section through the feeding section by the first threads, the second threads on the second rod body rotate to continuously shear and turn the material, and the third threads are also arranged on the second rod body and rotate to shear and turn the material in the second threads again, so that the plasticizing efficiency is improved;

2. because the cross section from the first rod body to the second rod body is gradually increased, the space for accommodating materials between the second threads is gradually reduced, the materials which are not melted are further compressed, and the materials are sheared and overturned by the third threads again, so that the melting and mixing effects are improved;

3. the materials pass through the feeding spiral blind groove, the fourth thread extrudes the materials in the feeding spiral blind groove to move leftwards, and the materials are turned over the fifth thread to enter the discharging spiral blind groove, so that the materials are mixed more uniformly, and the mixing effect is improved;

4. drive arrangement contact second dead lever, the extrusion slide bar slides to the installation cavity along the through-hole, and reset spring pressurized shrink, two connecting blocks of connecting plate contact, at this moment, battery and electric heating wire are linked together, and electric heating wire circular telegram is generated heat, makes the first body of rod generate heat, improves the plastify speed of material at the feeding section.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a first fixing bar and a second fixing bar;

fig. 3 is a schematic structural view of the mixing section.

In the figure, 1, a feeding section; 11. a first rod body; 12. a first thread; 13. a cavity; 131. An electric heating wire; 2. separating the compression section; 21. a second rod body; 22. a second thread; 23. A third thread; 3. a mixing section; 31. a third rod body; 32. a fourth thread; 33. a fifth thread; 34. feeding a spiral blind groove; 35. discharging spiral blind grooves; 4. a first fixing lever; 41. installing blind holes; 411. a storage battery; 412. countersunk head screws; 42. a second fixing bar; 43. a cavity; 431. connecting blocks; 44. a through hole; 441. a slide bar; 442. a connecting plate; 443. a return spring; 5. a fixed head; 51. a thread groove; 52. perforating; 53. an annular concave shoulder.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, a screw of a high-efficiency mixing injection molding machine comprises a fixed head 5, a feeding section 1, a separation and compression section 2 and a mixing section 3.

The feeding section 1 comprises a first rod body 11 and a first thread 12, the right end of the first rod body 11 is coaxially fixedly arranged on the left side face of the fixed head 5, the first thread 12 surrounds the outer side of the first rod body 11, the right end of the first thread 12 is smoothly connected with the left side face of the fixed head 5, the fixed head 5 is cylindrical, and the cross section of the fixed head 5 is larger than the cross section of the first rod body 11.

The separation compression section 2 includes the second body of rod 21, second screw thread 22 and third screw thread 23, the coaxial setting of the second body of rod 21 is at the left end of the first body of rod 11, the cross sectional dimension of the second body of rod 21 is greater than the cross sectional dimension of the first body of rod 11, transition gently between the second body of rod 21 and the first body of rod 11, second screw thread 22 centers on the outside of the second body of rod 21, the right-hand member of second screw thread 22 and the left end of first screw thread 12 link to each other, third screw thread 23 centers on the outside of the second body of rod 21.

The mixing section 3 comprises a third rod body 31, a fourth thread 32 and a fifth thread 33, the third rod body 31 is coaxially and fixedly arranged at the left end of the second rod body 21, the fourth thread 32 surrounds the outer side of the third rod body 31, the fifth thread 33 surrounds the outer side of the third rod body 31, a plurality of groups of feeding spiral blind grooves 34 and discharging spiral blind grooves 35 are formed between the fifth thread 33 and the fourth thread 32, the feeding spiral blind grooves 34 and the discharging spiral blind grooves 35 are separated through the fourth thread 32, the right ends of the feeding spiral blind grooves 34 are communicated with the separation compression section 2, and the left ends of the discharging spiral blind grooves 35 are communicated with the mixing section 3.

Insert the screw rod in the barrel, rotate the screw rod, the material is pushed to the second body of rod 21 department on the separation compression section 2 by first screw thread 12 through feed section 1, because the size of the second body of rod 21 cross section is greater than the size of the first body of rod 11 cross section, make the material that gets into the second body of rod 21 reduce, pressure increases, the second screw thread 22 on the second body of rod 21 rotates constantly to cut and overturn the material, in addition the rotation of third screw thread 23, cut the material in the second screw thread 22 once more and overturn, improve plastify efficiency.

Specifically, the distance from the axis of the first rod 11 to the crest of the first thread 12 is equal to the distance from the axis of the second rod 21 to the crest of the second thread 22.

When the screw rod rotates, the first screw thread 12 on the first rod body 11 pushes the material to the second screw thread 22 of the second rod body 21, and the material between the second screw threads 22 is reduced, the pressure is increased and the plasticizing effect of the material is improved because the material storage space between the second screw threads 22 is smaller than the material storage space between the first screw threads 12.

In particular, the distance from the axis of the second rod 21 to the crest of the second thread 22 is greater than the distance from the axis of the second rod 21 to the crest of the third thread 23.

After the material is pushed between the second threads 22, the second threads 22 and the third threads 23 rotate simultaneously, and the material between the second threads 22 is sheared and overturned by the third threads 23 again, so that the melting and plasticizing efficiency of the material is improved.

Specifically, the right end of the third thread 23 and the right end of the second thread 22 intersect.

When the material enters between the second threads 22, the right end of the third thread 23 rotates simultaneously, so that the material entering between the second threads 22 is sheared, and the shearing and mixing effects are improved.

Specifically, the distance from the axis of the first rod 11 to the crest of the first thread 12 is equal to the distance from the axis of the third rod 31 to the crest of the fourth thread 32.

Due to the difference in cross-sectional dimensions of the first rod 11 and the third rod 31, the pitch of the first flight 12 and the fourth flight 32 also differ, ensuring that the outermost dimensions of the screw remain the same, facilitating insertion of the screw into the barrel.

Specifically, the thread height of the fifth screw thread 33 located on the right side of the blind groove 34 of the feeding screw is decreased from right to left.

In the material entered into feeding spiral blind groove 34, under the promotion of fourth screw thread 32, the material moved to the left end of feeding spiral blind groove 34, because the thread height of fifth screw thread 33 on feeding spiral blind groove 34 right side reduces from the right side to left side in proper order for the material upset to ejection of compact spiral blind groove 35 in, then remove to the left end of ejection of compact spiral blind groove 35, make the material mix ground more even.

Specifically, the outer side of the fixing head 5 is provided with a thread groove 51.

The screw rod drives the fixed head and rotates, and when screw rod front end extrudate material was progressively more, screw rod and fixed head 5 backward movement, fixed head 5 and barrel inner wall took place to slide, and thread groove 51 can reduce the area of contact between 5 lateral walls of fixed head and the barrel inner wall, reduces the friction, improves the radiating effect simultaneously.

Particularly, be equipped with cylindric cavity 13 in the first body of rod 11, be equipped with electric heating wire 131 on the inside wall of cavity 13, be equipped with perforation 52 in the fixed head 5, the left end of perforation 52 and the right-hand member of cavity 13 are linked together, the right-hand member of perforation 52 runs through the right-hand member of fixed head 5, the right-hand member of fixed head 5 can be dismantled and is connected with first dead lever 4, be equipped with battery 411 in the first dead lever 4, the right-hand member of first dead lever 4 is coaxial to be linked firmly second dead lever 42, be equipped with installation cavity 43 in the second dead lever 42, be equipped with trigger mechanism in the installation cavity 43, when second dead lever 42 rotates, trigger mechanism can start electric heating wire 131, battery 411 is connected through trigger mechanism and electric heating wire 131 electricity.

The right end of the fixing head 5 is provided with an annular concave shoulder 53, the left end face of the first fixing rod 4 is provided with a blind mounting hole 41, the right end of the fixing head 5 is inserted into the blind mounting hole 41 of the first fixing rod 4, and the fixing head 5 is fixed on the first fixing rod 4 through a plurality of countersunk head screws 412.

The driving device drives the second fixing rod 42 to rotate, the trigger mechanism starts the electric heating wire 131, the storage battery 411 supplies power to the electric heating wire 131, the electric heating wire 131 heats the first rod body 11, and the melting speed of the materials in the feeding section 1 is improved.

Specifically, the trigger mechanism includes two connection blocks 431 and a through hole 44.

The two connection blocks 431 are respectively and fixedly arranged at two opposite sides of the installation cavity 43, one of the connection blocks 431 is electrically connected with one end of the electric heating wire 131, and the other connection block 431 is electrically connected with the other end of the electric heating wire 131 through the storage battery 411.

The through hole 44 is coaxially formed in the second fixing rod 42, the left end of the through hole 44 is communicated with the mounting cavity 43, a sliding rod 441 is arranged in the through hole 44 in a sliding manner, the left end of the sliding rod 441 extends into the mounting cavity 43, the end of the sliding rod 441 is fixedly provided with a connecting plate 442, the size of the connecting plate 442 is larger than that of the cross section of the through hole 44, a return spring 443 is fixedly connected between the connecting plate 442 and the left side wall of the mounting cavity 43, when the return spring 443 is in a normal state, the right end of the sliding rod 441 extends out of the right end face of the second fixing rod 42, when the right end of the sliding rod 441 is flush with the right end face of the second fixing rod 42, the connecting plate 442 is simultaneously contacted with the two connecting blocks 431, and.

The driving device contacts the second fixing rod 42, the extrusion sliding rod 441 slides towards the installation cavity 43 along the through hole 44, the return spring 443 is compressed and contracted, the connecting plate 442 contacts the two connecting blocks 431, at the moment, the storage battery 411 is communicated with the electric heating wire 131, and the electric heating wire 131 is electrified and generates heat, so that the first rod body 11 generates heat, and the melting speed of the material at the feeding section 1 is improved.

In the description of this patent, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the patent and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the patent.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A high-efficiency mixing injection molding machine screw is characterized by comprising: a fixed head (5);

a feed section (1), the feed section (1) having: the right end of the first rod body (11) is coaxially and fixedly arranged on the left side surface of the fixed head (5); the first thread (12) surrounds the outer side of the first rod body (11), and the right end of the first thread (12) is smoothly connected with the left side face of the fixed head (5);

a separation compression section (2), the separation compression section (2) having: the second rod body (21), the second rod body (21) is coaxially arranged at the left end of the first rod body (11), the cross section size of the second rod body (21) is larger than that of the first rod body (11), and the second rod body (21) and the first rod body (11) are in smooth transition; a second thread (22), wherein the second thread (22) surrounds the outer side of the second rod body (21), and the right end of the second thread (22) is connected with the left end of the first thread (12); -a third thread (23), said third thread (23) being wound around the outside of the second shank (21);

a mixing section (3), the mixing section (3) having: the third rod body (31), the said third rod body (31) is fixed on the left end of the second rod body (21) coaxially; a fourth thread (32), said fourth thread (32) surrounding the outside of the third rod (31); the feeding screw blind groove (34) and the discharging screw blind groove (35) are formed between the fifth thread (33) and the fourth thread (32), the feeding screw blind groove (34) and the discharging screw blind groove (35) are separated through the fourth thread (32), the right end of the feeding screw blind groove (34) is communicated with the mixing section (3), and the left end of the discharging screw blind groove (35) is communicated with the mixing section (3).

2. A screw for a high efficiency compounding injection molding machine according to claim 1 wherein the distance from the axis of the first rod (11) to the crest of the first flight (12) is the same as the distance from the axis of the second rod (21) to the crest of the second flight (22).

3. A screw for a high efficiency compounding injection molding machine according to claim 2 wherein the distance from the axis of the second shank (21) to the crest of the second flight (22) is greater than the distance from the axis of the second shank (21) to the crest of the third flight (23).

4. A high efficiency compounding injection molding machine screw according to claim 3, wherein the right end of said third flight (23) intersects the right end of said second flight (22).

5. A screw for a high-efficiency mixing and injection molding machine according to claim 4, characterized in that the distance from the axis of the first rod (11) to the crest of the first thread (12) is equal to the distance from the axis of the third rod (31) to the crest of the fourth thread (32).

6. A screw for a high-efficiency mixing and injection molding machine according to claim 5, characterized in that the thread height of the fifth screw thread (33) on the right side of the blind groove (34) of the feed screw is reduced from right to left.

7. A screw for a high-efficiency mixing and injection molding machine according to claim 6, characterized in that the outside of the fixed head (5) is provided with a thread groove (51).

8. The screw rod of the high-efficiency mixing injection molding machine according to claim 1, wherein a cylindrical cavity (13) is formed in the first rod body (11), an electric heating wire (131) is arranged on the inner side wall of the cavity (13), a perforation (52) is formed in the fixing head (5), the left end of the perforation (52) is communicated with the right end of the cavity (13), the right end of the perforation (52) penetrates through the right end of the fixing head (5), the right end of the fixing head (5) is detachably connected with a first fixing rod (4), a storage battery (411) is arranged in the first fixing rod (4), the right end of the first fixing rod (4) is coaxially and fixedly connected with a second fixing rod (42), a mounting cavity (43) is formed in the second fixing rod (42), a trigger mechanism is arranged in the mounting cavity (43), and when the second fixing rod (42) rotates, the trigger mechanism can start the electric heating wire (131), and the storage battery (411) is electrically connected with the electric heating wire (131) through the trigger mechanism.

9. A high efficiency compounding injection molding machine screw according to claim 8, wherein said trigger mechanism comprises:

the two connecting blocks (431) are fixedly arranged on two opposite sides of the mounting cavity (43) respectively, one connecting block (431) is electrically connected with one end of the electric heating wire (131), and the other connecting block (431) is electrically connected with the other end of the electric heating wire (131) through the storage battery (411);

a through hole (44), the through hole (44) is coaxially arranged in the second fixing rod (42), the left end of the through hole (44) is communicated with the mounting cavity (43), a sliding rod (441) is arranged in the through hole (44) in a sliding manner, the left end of the sliding rod (441) extends into the mounting cavity (43) and the end part is fixedly provided with a connecting plate (442), the size of the connecting plate (442) is larger than that of the cross section of the through hole (44), a return spring (443) is fixedly connected between the connecting plate (442) and the left side wall of the mounting cavity (43), when the return spring (443) is in a normal state, the right end of the sliding rod (441) extends out of the right end face of the second fixing rod (42), when the right end of the sliding rod (441) is flush with the right end face of the second fixing rod (42), the connecting plate (442) is simultaneously in contact with the two connecting blocks (431), and the connecting plate (442) and the two connecting blocks (431) are both made of an electrically conductive material.