CN215512207U - High-precision high-wear-resistance screw structure - Google Patents
High-precision high-wear-resistance screw structure Download PDFInfo
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- CN215512207U CN215512207U CN202122013178.8U CN202122013178U CN215512207U CN 215512207 U CN215512207 U CN 215512207U CN 202122013178 U CN202122013178 U CN 202122013178U CN 215512207 U CN215512207 U CN 215512207U
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Abstract
A high-precision high-wear-resistance screw structure comprises a screw head, a connecting rod main body and a screw sleeve; the connecting rod main body comprises a transverse sliding connecting rod, a limiting end rod and a spline; the end part of the screw head is connected with a threaded connecting rod; the end part of the threaded connecting rod is connected with a locking rod; the screw rod sleeve is transversely connected to the transverse sliding connecting rod in a sliding manner; the end part of the transverse sliding connecting rod is provided with a threaded connecting hole, and the transverse sliding connecting rod is provided with a transverse connecting hole; the screw head is in threaded connection with the threaded connecting hole through a threaded connecting rod and is fixed on the transverse sliding connecting rod; and the limiting end rod is connected with a locking mechanism for preventing the locking rod from rotating. The external thread of the utility model is arranged outside the screw sleeve, the screw sleeve is detachably connected on the connecting rod main body, the replacement is convenient, the screw head can be prevented from loosening through the anti-loosening mechanism, and the screw sleeve is ensured to be fixed between the screw head and the limiting end rod.
Description
Technical Field
The utility model relates to a high-precision high-wear-resistance screw structure.
Background
The barrel and screw are important parts of the extruder in an extrusion compression molding system. The machine barrel and the screw rod work in a matching way, the machine barrel contains the screw rod, and the screw rod rotates in the machine barrel. When the screw rotates to push the plastic to move forwards in the machine barrel, heat is transferred from the outside of the machine barrel to the plastic in the barrel, and the volume of the thread on the screw is gradually reduced, so that the plastic in the thread groove is uniformly mixed and plasticated under the action of various forces such as extrusion, turnover, shearing and the like, and is gradually melted to be in a viscous state while moving towards the front part of the machine barrel, and the plastication of the plastic is completed. The normal cooperation work of barrel and screw rod has guaranteed the continuous extrusion molding raw materials shaping production of extruder.
The existing screw external threads are generally directly arranged on the screw, the screw can only be replaced wholly after the external threads are damaged, the screw is relatively wasted, and the screw only needs to replace part of components after the external threads are damaged is needed, so that the replacement cost is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing the screw structure which only needs to replace the screw sleeve after the external thread is damaged.
In order to solve the technical problems, the technical solution of the high-precision high-wear-resistance screw structure provided by the utility model is as follows:
comprises a screw head, a connecting rod main body and a screw sleeve; the outer side of the screw rod sleeve is provided with an external thread; the connecting rod main body comprises a transverse sliding connecting rod, a limiting end rod connected to the side edge of the transverse sliding connecting rod and a spline connected to the side edge of the limiting end rod; the end part of the screw head is connected with a threaded connecting rod; the end part of the threaded connecting rod is connected with a locking rod; the screw rod sleeve is transversely connected to the transverse sliding connecting rod in a sliding manner; the end part of the transverse sliding connecting rod is provided with a threaded connecting hole in threaded connection with the threaded connecting rod, and the side edge of the threaded connecting hole of the transverse sliding connecting rod is provided with a transverse connecting hole communicated with the threaded connecting hole; the tail end of the transverse connecting hole penetrates into the limiting end rod; the screw head is in threaded connection with the threaded connecting hole through a threaded connecting rod and is fixed on the transverse sliding connecting rod; after the threaded connecting rod and the threaded connecting hole are threaded, the screw sleeve is fixed between the screw head and the limiting end rod, and the anti-loosening rod penetrates through the threaded connecting hole and is connected into the transverse connecting hole; and the limiting end rod is connected with a locking mechanism for preventing the locking rod from rotating.
The anti-loosening mechanism is a locking bolt; an anti-rotation plane is arranged on the side edge of the anti-loosening rod; the locking bolt is in threaded connection with the limiting end rod, and the bottom end of the locking bolt penetrates into the transverse connecting hole and abuts against the anti-rotation plane of the anti-loosening rod.
The number of the locking bolts is two, and the two locking bolts are transversely arranged along the limiting end rod.
The transverse sliding connecting rod is an arched rod, and a transverse arched hole matched with the arched rod is formed in the corresponding screw rod sleeve.
The transverse sliding connecting rod, the limiting end rod and the spline are integrally formed.
The utility model can achieve the technical effects that: the external thread of the utility model is arranged outside the screw sleeve, the screw sleeve is detachably connected on the connecting rod main body, the replacement is convenient, the screw head can be prevented from loosening through the anti-loosening mechanism, and the screw sleeve is ensured to be fixed between the screw head and the limiting end rod.
Drawings
The utility model is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic structural diagram of a high-precision high-wear-resistance screw structure according to the utility model;
FIG. 2 is an exploded view of a high precision, high wear resistant screw configuration of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a schematic connection diagram of a high-precision high-wear-resistance screw structure according to the present invention;
FIG. 6 is an enlarged view of section C of FIG. 5;
fig. 7 is an enlarged view of a portion D of fig. 5.
Detailed Description
The utility model is explained in further detail below with reference to the drawings.
See fig. 1-7.
A high-precision high-wear-resistance screw structure comprises a screw head 1, a connecting rod main body and a screw sleeve 2; the outer side of the screw rod sleeve 2 is provided with an external thread; the connecting rod main body comprises a transverse sliding connecting rod 3, a limiting end rod 4 connected to the side edge of the transverse sliding connecting rod 3 and a spline 5 connected to the side edge of the limiting end rod 4; the end part of the screw head 1 is connected with a threaded connecting rod 6; the end part of the threaded connecting rod 6 is connected with a locking rod 7; the screw rod sleeve 2 is transversely connected to the transverse sliding connecting rod 3 in a sliding manner; the end part of the transverse sliding connecting rod 3 is provided with a threaded connecting hole 8 in threaded connection with the threaded connecting rod 6, and the side edge of the threaded connecting hole 8 of the transverse sliding connecting rod 3 is provided with a transverse connecting hole 9 communicated with the threaded connecting hole 8; the tail end of the transverse connecting hole 9 penetrates into the limiting end rod 4; the screw head 1 is fixed on the transverse sliding connecting rod 3 through the threaded connecting rod 6 and the threaded connecting hole 8 in a threaded connection manner; after the threaded connecting rod 6 and the threaded connecting hole 8 are threaded, the screw sleeve 2 is fixed between the screw head 1 and the limiting end rod 4, and the anti-loosening rod 7 penetrates through the threaded connecting hole 8 and is connected into the transverse connecting hole 9; and the limiting end rod 4 is connected with a locking mechanism for preventing the locking rod 7 from rotating.
Specifically, the anti-loosening mechanism is a locking bolt 11; an anti-rotation plane 12 is arranged on the side edge of the anti-loosening rod 7; the locking bolt 11 is in threaded connection with the limiting end rod 4, and the bottom end of the locking bolt 11 penetrates into the transverse connecting hole 9 and abuts against the anti-rotation plane 12 of the anti-loosening rod 7.
Specifically, the number of the locking bolts 11 is two, and the two locking bolts 11 are arranged along the limiting end rod 4 in the transverse direction.
Specifically, the transverse sliding connecting rod 3 is an arched rod, and a transverse arched hole 13 matched with the arched rod is formed in the corresponding screw rod sleeve 2.
Specifically, the transverse sliding connecting rod 3, the limiting end rod 4 and the spline 5 are integrally formed.
Instructions for use: in the installation, firstly, the screw sleeve 2 is sleeved on the transverse sliding connecting rod 3, so that the screw sleeve 2 can transversely slide along the transverse sliding connecting rod 3, then the threaded connecting rod 6 of the screw head 1 is in threaded connection with the threaded connecting hole 8 of the transverse sliding connecting rod 3, so that the screw sleeve 2 is fixed between the screw head 1 and the limiting end rod 4, finally, the locking bolt 11 is in threaded connection with the limiting end rod 4, the bottom end of the locking bolt 11 penetrates into the transverse connecting hole 9 and abuts against the anti-rotation plane 12 of the anti-loosening rod 7, the anti-loosening rod 7 is prevented from rotating through the locking bolt 11, namely the threaded connecting rod 6 and the screw head 1 are prevented from rotating, so that the anti-loosening effect is achieved, and the screw sleeve 2 is ensured to be fixed between the screw head 1 and the limiting end rod 4; the screw sleeve 2 is detachably connected to the transverse sliding connecting rod 3, and only the screw sleeve 2 needs to be replaced independently after the external thread is damaged, so that the cost is low; preferably, the number of the locking bolts 11 is two, the two locking bolts 11 are transversely arranged along the limiting end rod 4, and the locking effect is better by locking the two locking bolts 11; preferably, the transverse sliding connecting rod 3 is an arc rod, a transverse arc-shaped hole 13 matched with the arc rod is formed in the corresponding screw sleeve 2, the transverse sliding connecting rod 3 and the screw sleeve 2 are matched with the transverse arc-shaped hole 13 through the arc rod, so that the screw sleeve 2 can only transversely slide along the transverse sliding connecting rod 3, and the screw sleeve 2 and the transverse sliding connecting rod 3 cannot relatively rotate after being fixed.
Claims (5)
1. The utility model provides a high wear-resisting screw rod structure of high accuracy which characterized in that: comprises a screw head (1), a connecting rod body and a screw sleeve (2); the outer side of the screw rod sleeve (2) is provided with an external thread; the connecting rod main body comprises a transverse sliding connecting rod (3), a limiting end rod (4) connected to the side edge of the transverse sliding connecting rod (3) and a spline (5) connected to the side edge of the limiting end rod (4); the end part of the screw head (1) is connected with a threaded connecting rod (6); the end part of the threaded connecting rod (6) is connected with a locking rod (7); the screw rod sleeve (2) is transversely connected to the transverse sliding connecting rod (3) in a sliding manner; the end part of the transverse sliding connecting rod (3) is provided with a threaded connecting hole (8) in threaded connection with the threaded connecting rod (6), and the side edge of the threaded connecting hole (8) of the transverse sliding connecting rod (3) is provided with a transverse connecting hole (9) communicated with the threaded connecting hole (8); the tail end of the transverse connecting hole (9) penetrates into the limiting end rod (4); the screw head (1) is in threaded connection with the threaded connecting hole (8) through a threaded connecting rod (6) and is fixed on the transverse sliding connecting rod (3); after the threaded connecting rod (6) and the threaded connecting hole (8) are threaded, the screw sleeve (2) is fixed between the screw head (1) and the limiting end rod (4), and the anti-loosening rod (7) penetrates through the threaded connecting hole (8) and is connected into the transverse connecting hole (9); and the limiting end rod (4) is connected with a locking mechanism for preventing the locking rod (7) from rotating.
2. A high precision high wear resistant screw structure according to claim 1, characterized in that: the anti-loosening mechanism is a locking bolt (11); an anti-rotation plane (12) is arranged on the side edge of the anti-loosening rod (7); the locking bolt (11) is in threaded connection with the limiting end rod (4), and the bottom end of the locking bolt (11) penetrates into the transverse connecting hole (9) and abuts against the anti-rotation plane (12) of the anti-loosening rod (7).
3. A high precision high wear resistant screw structure according to claim 2, characterized in that: the number of the locking bolts (11) is two, and the two locking bolts (11) are transversely arranged along the limiting end rod (4).
4. A high precision high wear resistant screw structure according to claim 1, characterized in that: the transverse sliding connecting rod (3) is an arched rod, and a transverse arched hole (13) matched with the arched rod is formed in the corresponding screw rod sleeve (2).
5. A high precision high wear resistant screw structure according to claim 1, characterized in that: the transverse sliding connecting rod (3), the limiting end rod (4) and the spline (5) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122013178.8U CN215512207U (en) | 2021-08-25 | 2021-08-25 | High-precision high-wear-resistance screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122013178.8U CN215512207U (en) | 2021-08-25 | 2021-08-25 | High-precision high-wear-resistance screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215512207U true CN215512207U (en) | 2022-01-14 |
Family
ID=79793346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122013178.8U Active CN215512207U (en) | 2021-08-25 | 2021-08-25 | High-precision high-wear-resistance screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215512207U (en) |
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2021
- 2021-08-25 CN CN202122013178.8U patent/CN215512207U/en active Active
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