CN110667060B

CN110667060B - Assembled screw rod

Info

Publication number: CN110667060B
Application number: CN201910940833.9A
Authority: CN
Inventors: 蔡煜明; 赵勇; 俞丽琴; 李顺利; 郑颜; 张泽彬
Original assignee: Zhejiang Taihu Yuanda New Material Corp ltd
Current assignee: Zhejiang Taihu Yuanda New Material Corp ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-16
Anticipated expiration: 2039-09-30
Also published as: CN110667060A

Abstract

The invention discloses an assembled screw, and aims to provide an assembled screw capable of reducing manufacturing cost of enterprises. It includes the screw rod, the end connection of screw rod has the rubber head, cross the rubber head and constitute by conical head and spliced pole, the one end and the conical head fixed connection of spliced pole, the other end of spliced pole is equipped with the thread groove, the one end of being connected with the rubber head on the screw rod is equipped with the external screw thread, the screw rod passes through the external screw thread and installs in the thread groove of spliced pole, the one end of installing in the thread groove on the screw rod is equipped with the recess, be equipped with locating component in the recess, locating component and recess sliding connection, the bottom of thread groove be equipped with locating component assorted constant head. The invention has the beneficial effects that: the manufacturing cost of enterprises is saved.

Description

Assembled screw rod

Technical Field

The invention relates to the technical field of screws, in particular to an assembled screw.

Background

The screw is one of the core components of the injection molding machine, and mainly functions to convert solid plastic particles or powder into stable and uniform plastic melt through rotation of the screw, and the stable and uniform plastic melt is output to a mold and auxiliary equipment to produce a product meeting the requirements.

Different injection molding machines or different products need different technological requirements, and products meeting the requirements can be designed by equipping screws of different types, so that the manufacturing cost of enterprises is greatly increased.

Disclosure of Invention

The invention provides an assembled screw rod for reducing the manufacturing cost of enterprises, aiming at overcoming the problem that the manufacturing cost of the enterprises is increased in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an assembled screw rod, it includes the screw rod, the end connection of screw rod has crossed the rubber head, cross the rubber head and constitute by conical head and spliced pole, the one end and the conical head fixed connection of spliced pole, the other end of spliced pole is equipped with the thread groove, the one end of being connected with crossing the rubber head on the screw rod is equipped with the external screw thread, the screw rod passes through the external screw thread and installs in the thread groove of spliced pole, the one end of installing in the thread groove on the screw rod is equipped with the recess, be equipped with locating component in the recess, locating component and recess sliding connection, the bottom of thread groove be equipped with locating component assorted constant head tank.

The end connection of screw rod has the gluey head, cross the gluey head and constitute by conical head and spliced pole, the one end and the conical head fixed connection of spliced pole, the other end of spliced pole is equipped with the thread groove, the one end of being connected with crossing the gluey head on the screw rod is equipped with the external screw thread, the screw rod passes through the external screw thread and installs in the thread groove of spliced pole, the one end of installing in the thread groove on the screw rod is equipped with the recess, be equipped with locating component in the recess, locating component and recess sliding connection, the bottom of thread groove be equipped with locating component assorted. According to the technology demand of product, cross the one end of gluing head and screw rod and pass through the adjustable distance of gluing the head to the screw rod other end of crossing of threaded connection to fix a position the locking through locating component, prevent to cross that the head of gluing is not hard up under the high-speed moving of screw rod drives, with this length matching that realizes the screw rod, need not additionally to be equipped with the screw rod of different length, reached the purpose that reduces enterprise manufacturing cost.

Preferably, the positioning assembly comprises a positioning block, the positioning block is cubic, the groove and the positioning groove are matched with the positioning block, one end of the positioning block and the end of the screw rod are located on the same plane, the other end of the positioning block is provided with a first spring, one end of the first spring is fixedly connected with the positioning block, and the other end of the first spring is fixedly connected with the bottom of the groove. When the gluing head and the screw are adjusted to a certain position, the positioning block is pushed, so that one end of the positioning block is positioned in the positioning groove, the other end of the positioning block is in spring connection with the bottom of the groove, and the positioning block is cubic, so that the looseness caused by the rotation of the gluing head is favorably avoided; the one end of locating piece and the tip of screw rod are on the coplanar, and spring one this moment is in by compression state, is applicable to under the operating mode that need not cross the rubber head, is equipped with the rubber ring in the feed cylinder, and the screw rod promotes the plastic fuse-element and jets away from the nozzle through the filtration pore on the rubber ring, need not to be equipped with the screw rod that does not contain the rubber head, practices thrift the manufacturing cost of enterprise.

As preferred, be equipped with the shifting block on the surface of locating piece, shifting block and locating piece fixed connection are equipped with on the screw rod with shifting block assorted rectangular hole, the length of rectangular hole is greater than the length of shifting block, the shifting block is located the rectangular hole, is equipped with locking mechanism on the locating piece, be equipped with on the screw rod with locking mechanism assorted locking hole, the rectangular hole is located the one end of being close to the external screw thread, the locking hole is located the one end of keeping away from the external screw thread. The shifting block is shifted back and forth along the rectangular hole to adjust the position of the positioning block, and when the positioning block needs to be shifted back to be in a locking state, the positioning block is shifted back through the shifting block until the locking pin is inserted into the locking hole; when the one end of locating piece and the tip of screw rod were on the coplanar, locking mechanism passed through the locking hole locking, and spring one was in by compression state this moment, and the screw rod of being convenient for is applied to under the operating mode that need not cross the rubber head.

Preferably, the outer surface of the screw is provided with an elastic membrane matched with the locking hole, the elastic membrane completely covers the locking hole, and the elastic membrane is made of TPU. The TPU material has the characteristics of high resilience and high temperature resistance; the solid plastic particles or powder are heated and then flow through the surface of the screw to be converted into plastic melt, and the TPU elastic film can effectively prevent the TPU elastic film from permeating into the locking hole, so that the service life of the screw is prolonged, and the utilization rate of the solid plastic particles or powder is improved.

As preferred, locking mechanism includes locking round pin and reference column, be equipped with on the surface of locating piece with locking round pin assorted U type groove one, the one end of locking round pin is passed through the locking hole and is contacted with the elastic membrane and be located the outside of screw rod mutually, the other end of locking round pin be equipped with reference column assorted U type groove two and a plurality of spring two, two evenly distributed of a plurality of spring are in the side of U type groove two, the one end of spring two and the bottom fixed connection of U type groove one, the other end and the locking round pin fixed connection of spring two, the one end of reference column and the bottom fixed connection of U type groove one, the other end of reference column is located U type groove two. When one end of the positioning block and the end part of the screw rod are on the same plane, the locking pin is contacted with the elastic membrane through the locking hole, and the first spring is in a compressed state; when the gluing head is adjusted to a required position and needs to be positioned, a worker presses down the locking pin, and the first spring pushes the positioning block outwards, so that the positioning block is inserted into the positioning groove to position the gluing head; the positioning column has a certain positioning effect on the locking pin when the positioning block slides conveniently, and meanwhile, the deformation of the second spring is avoided.

Preferably, the sum of the thickness of one end, in contact with the elastic membrane, of the locking pin and the height of the positioning column is smaller than or equal to the sum of the depth of the first U-shaped groove and the sum of the gap between the outer side face of the positioning block and the groove, the elastic membrane covers one end of the locking hole, and a transition inclined plane is arranged at the other end of the locking hole. The design is favorable for the positioning block to slide in the groove, and the locking pin is prevented from interfering with the screw rod; when the staff presses down the locking pin, the locking pin slides into the groove through the transition inclined plane.

Preferably, a material cylinder is arranged on the outer side of the screw rod, the screw rod is located in the material cylinder, a glue extruding screw channel is formed between the inner wall of the screw rod and the inner wall of the material cylinder, a connector is arranged at the end of the material cylinder, one end of the connector is detachably connected with the material cylinder, a nozzle is arranged at the other end of the connector, a through hole is formed in the nozzle, the diameter of the through hole is gradually reduced from one end connected with the connector to the other end, a taper hole matched with the taper head is formed in one end, detachably connected with the material cylinder, of the connector, a cylindrical hole is formed in the other end of the connector, the diameter of the cylindrical hole is the same as the maximum diameter of the through hole, one end of the taper hole is communicated with the cylindrical hole, the other. The solid plastic particles or powder flow in the rubber extruding screw channel under the rotation of the screw rod, and are converted into stable and uniform plastic melt through heating and homogenizing, and then are sprayed out through the nozzle.

Preferably, the conical head consists of a conical frustum and a hemisphere, one end of the conical frustum is fixedly connected with the connecting column, the other end of the conical frustum is fixedly connected with the hemisphere, the diameter of the end, fixedly connected with the connecting column, of the conical frustum is larger than that of the other end of the conical frustum, and a generatrix of the conical frustum is parallel to a generatrix of the conical hole. This design facilitates the homogenisation of the plastic melt in the extrusion nozzle.

The invention has the beneficial effects that: according to the process requirements of products, the distance from the glue passing head to the other end of the screw rod can be adjusted by connecting the glue passing head with one end of the screw rod through threads, so that flexible length matching of the screw rod is realized, and the screw rods with different lengths do not need to be additionally arranged; one end of the positioning block and the end part of the screw rod are on the same plane, so that the positioning block is suitable for the working condition without the need of passing through the rubber head, the screw rod without the rubber head is not needed, and the manufacturing cost of an enterprise is saved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the screw when the head of the screw is adjusted to be at a minimum distance from the other end of the screw;

FIG. 3 is a schematic structural diagram of the screw rod when the glue passing head at one end of the screw rod is adjusted to be the maximum distance from the other end of the screw rod;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

fig. 5 is a partially enlarged view at B in fig. 2.

In the figure: 1. the screw rod, 2, a rubber passing head, 3, a conical head, 4, a connecting column, 5, a thread groove, 6, a groove, 7, a positioning assembly, 8, a positioning groove, 9, a positioning block, 10, a first spring, 11, a shifting block, 12, a rectangular hole, 13, a locking mechanism, 14, a locking hole, 15, an elastic membrane, 16, a locking pin, 17, a positioning column, 18, a first U-shaped groove, 19, a second U-shaped groove, 20, a second spring, 21, a transition inclined plane, 22, a material cylinder, 23, a rubber extrusion screw channel, 24, a connector, 25, a nozzle, 26, a through hole, 27, a conical hole, 28, 29, a conical table and 30, and a cylindrical body.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the embodiment shown in fig. 1, an assembled screw comprises a screw 1, the end of the screw 1 is connected with a rubber head 2, the rubber head 2 consists of a conical head 3 and a connecting column 4, one end of the connecting column 4 is fixedly connected with the conical head 3, the other end of the connecting column 4 is provided with a thread groove 5, one end of the screw 1 connected with the rubber head 2 is provided with an external thread, the screw 1 is installed in the thread groove 5 of the connecting column 4 through the external thread, one end of the screw 1 installed in the thread groove 5 is provided with a groove 6, a positioning component 7 is arranged in the groove 6, the positioning component 7 is slidably connected with the groove 6, and the bottom of the thread groove 5 is provided with a positioning groove 8 matched with the positioning component 7. The positioning assembly 7 comprises a positioning block 9, the positioning block 9 is cubic, the groove 6 and the positioning groove 8 are matched with the positioning block 9, one end of the positioning block 9 and the end of the screw rod 1 are on the same plane, the other end of the positioning block 9 is provided with a first spring 10, one end of the first spring 10 is fixedly connected with the positioning block 9, and the other end of the first spring 10 is fixedly connected with the bottom of the groove 6.

As shown in fig. 1, 2 and 3, a shifting block 11 is arranged on the outer surface of a positioning block 9, the shifting block 11 is fixedly connected with the positioning block 9, a rectangular hole 12 matched with the shifting block 11 is formed in a screw rod 1, the length of the rectangular hole 12 is greater than that of the shifting block 11, the shifting block 11 is located in the rectangular hole 12, a locking mechanism 13 is arranged on the positioning block 9, a locking hole 14 matched with the locking mechanism 13 is formed in the screw rod 1, the rectangular hole 12 is located at one end close to the external thread, and the locking hole 14 is located at one end far away from the external thread.

As shown in fig. 4 and 5, an elastic membrane 15 matched with the locking hole 14 is arranged on the outer surface of the screw rod 1, the elastic membrane 15 completely covers the locking hole 14, and the elastic membrane 15 is made of TPU.

As shown in fig. 4, the locking mechanism 13 includes a locking pin 16 and a positioning column 17, a first U-shaped groove 18 matched with the locking pin 16 is formed in the outer surface of the positioning block 9, one end of the locking pin 16 contacts with the elastic membrane 15 through the locking hole 14 and is located outside the screw rod 1, a second U-shaped groove 19 matched with the positioning column 17 and a second plurality of springs 20 are arranged at the other end of the locking pin 16, the second plurality of springs 20 are uniformly distributed on the side surface of the second U-shaped groove 19, one end of the second spring 20 is fixedly connected with the bottom of the first U-shaped groove 18, the other end of the second spring 20 is fixedly connected with the locking pin 16, one end of the positioning column 17 is fixedly connected with the bottom of the first U-shaped groove 18, and the other.

As shown in fig. 5, the sum of the thickness of one end of the locking pin 16, which is in contact with the elastic membrane 15, and the height of the positioning column 17 is less than or equal to the sum of the depth of the U-shaped groove I18 and the gap between the outer side surface of the positioning block 9 and the groove 6, one end of the locking hole 14 is covered with the elastic membrane 15, and the other end of the locking hole 14 is provided with a transition inclined surface 21.

As shown in figure 2 of the drawings, in which, as shown in fig. 3, a charging barrel 22 is arranged outside a screw rod 1, the screw rod 1 is located in the charging barrel 22, a glue extruding screw channel 23 is formed between the screw rod 1 and the inner wall of the charging barrel 22, a connecting head 24 is arranged at the end of the charging barrel 22, one end of the connecting head 24 is detachably connected with the charging barrel 22, a nozzle 25 is arranged at the other end of the connecting head 24, a through hole 26 is formed in the nozzle 25, the diameter of the through hole 26 is gradually reduced from one end connected with the connecting head 24 to the other end, a taper hole 27 matched with the taper head 3 is formed in one end of the connecting head 24 detachably connected with the charging barrel 22, a cylindrical hole 28 is formed in the other end of the connecting head 24, the diameter of the cylindrical hole 28 is the same as the maximum diameter of the through hole 26, one end of the taper hole 27 is communicated with the cylindrical hole 28, the other end of the taper hole 27. The cone head 3 consists of a cone frustum 29 and a hemisphere 30, one end of the cone frustum 29 is fixedly connected with the connecting column 4, the other end of the cone frustum 29 is fixedly connected with the hemisphere 30, the diameter of the end, fixedly connected with the connecting column 4, of the cone frustum 29 is larger than that of the other end of the cone frustum, and a generatrix of the cone frustum 29 is parallel to a generatrix of the cone hole 27.

The working principle is as follows: under the initial state, the one end of locating piece 9 and the tip of screw rod 1 are on the coplanar, and spring 10 is in by the compression state this moment, and this state also can be applicable to under the operating mode that does not need to cross rubber head 2, is equipped with in the feed cylinder 22 and crosses the rubber ring, and the screw rod promotes the plastic melt and jets out from the nozzle through the filtration pore on crossing the rubber ring, need not to be equipped with screw rod 1 that does not contain rubber head 2.

When gluing first 2 when needs, according to the technology demand of product, cross the adjustable distance of gluing first 2 to the screw rod 1 other end of gluing of head 2 and screw rod 1's one end through threaded connection, when crossing glue head 2 and adjusting required position and need fixing a position, the staff presses down locking round pin 16, spring 10 is at this moment outwards pushed locating piece 9, make locating piece 9 insert and fix a position gluing first 2 in constant head tank 8, it is not hard up under the high-speed moving drive of screw rod 1 to prevent to cross glue head 2, realize the length matching of screw rod 1 with this, need not additionally to be equipped with the screw rod 1 of different length.

Claims

1. The assembled screw is characterized by comprising a screw (1), wherein the end part of the screw (1) is connected with a rubber head (2), the rubber head (2) consists of a conical head (3) and a connecting column (4), one end of the connecting column (4) is fixedly connected with the conical head (3), the other end of the connecting column (4) is provided with a thread groove (5), one end of the screw (1) connected with the rubber head (2) is provided with an external thread, the screw (1) is arranged in the thread groove (5) of the connecting column (4) through the external thread, one end of the screw (1) arranged in the thread groove (5) is provided with a groove (6), a positioning component (7) is arranged in the groove (6), the positioning component (7) is in sliding connection with the groove (6), the bottom of the thread groove (5) is provided with a positioning groove (8) matched with the positioning component (7), locating component (7) including locating piece (9), the shape of locating piece (9) is the cube, recess (6) and constant head tank (8) all with locating piece (9) phase-match, the one end of locating piece (9) and the tip of screw rod (1) are on the coplanar, the other end of locating piece (9) is equipped with spring one (10), the one end and the locating piece (9) fixed connection of spring one (10), the other end and the bottom fixed connection of recess (6) of spring one (10).

2. The assembled screw rod according to claim 1, wherein a shifting block (11) is arranged on the outer surface of the positioning block (9), the shifting block (11) is fixedly connected with the positioning block (9), a rectangular hole (12) matched with the shifting block (11) is formed in the screw rod (1), the length of the rectangular hole (12) is larger than that of the shifting block (11), the shifting block (11) is located in the rectangular hole (12), a locking mechanism (13) is arranged on the positioning block (9), a locking hole (14) matched with the locking mechanism (13) is formed in the screw rod (1), the rectangular hole (12) is located at one end close to the external thread, and the locking hole (14) is located at one end far away from the external thread.

3. An assembled screw according to claim 2, characterized in that the outer surface of the screw (1) is provided with an elastic membrane (15) matching the locking hole (14), the elastic membrane (15) completely covers the locking hole (14), and the elastic membrane (15) is made of TPU.

4. The assembled screw rod according to claim 3, wherein the locking mechanism (13) comprises a locking pin (16) and a positioning column (17), a first U-shaped groove (18) matched with the locking pin (16) is formed in the outer surface of the positioning block (9), one end of the locking pin (16) is in contact with the elastic membrane (15) through a locking hole (14) and is located outside the screw rod (1), a second U-shaped groove (19) matched with the positioning column (17) and a plurality of second springs (20) are arranged at the other end of the locking pin (16), the plurality of second springs (20) are uniformly distributed on the side face of the second U-shaped groove (19), one end of each second spring (20) is fixedly connected with the bottom of the first U-shaped groove (18), the other end of each second spring (20) is fixedly connected with the locking pin (16), one end of the positioning column (17) is fixedly connected with the bottom of the first U-shaped groove (18), the other end of the positioning column (17) is positioned in the U-shaped groove II (19).

5. The assembled screw rod according to claim 4, wherein the sum of the thickness of one end of the locking pin (16) contacting the elastic membrane (15) and the height of the positioning column (17) is less than or equal to the sum of the depth of the U-shaped groove I (18) and the gap between the outer side surface of the positioning block (9) and the groove (6), one end of the locking hole (14) is covered with the elastic membrane (15), and the other end of the locking hole (14) is provided with a transition inclined surface (21).

6. The assembled screw rod of claim 1 or 2 or 3 or 4 or 5, characterized in that, the outside of screw rod (1) is equipped with feed cylinder (22), screw rod (1) is located feed cylinder (22), the inner wall of screw rod (1) and feed cylinder (22) between form crowded gluey screw channel (23), the tip of feed cylinder (22) is equipped with connector (24), the one end of connector (24) can be dismantled with feed cylinder (22) and be connected, the other end of connector (24) is equipped with nozzle (25), nozzle (25) in be equipped with through-hole (26), the diameter of through-hole (26) reduces from the one end of being connected with connector (24) to the other end gradually, connector (24) go up the one end of dismantling the connection with feed cylinder (22) be equipped with conical hole (27) that match with conical head (3), the other end of connector (24) is equipped with cylindrical hole (28), the diameter of the cylindrical hole (28) is the same as the maximum diameter of the through hole (26), one end of the taper hole (27) is communicated with the cylindrical hole (28), the other end of the taper hole (27) is communicated with the glue extruding screw channel (23), one end of the cylindrical hole (28) is communicated with the taper hole (27), and the other end of the cylindrical hole (28) is communicated with the through hole (26).

7. An assembled screw according to claim 6, characterized in that the conical head (3) consists of a truncated cone (29) and a hemisphere (30), one end of the truncated cone (29) is fixedly connected with the connecting column (4), the other end of the truncated cone (29) is fixedly connected with the hemisphere (30), the diameter of the end of the truncated cone (29) fixedly connected with the connecting column (4) is larger than that of the other end, and the generatrix of the truncated cone (29) is parallel to the generatrix of the conical hole (27).