CN213117050U - Positioning nut for injection molding machine - Google Patents
Positioning nut for injection molding machine Download PDFInfo
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- CN213117050U CN213117050U CN202021798667.8U CN202021798667U CN213117050U CN 213117050 U CN213117050 U CN 213117050U CN 202021798667 U CN202021798667 U CN 202021798667U CN 213117050 U CN213117050 U CN 213117050U
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Abstract
The utility model provides a positioning nut for on injection molding machine, is including connecting the nut body on two board-like injection molding machines the middle part axial of nut body is provided with the locating hole be provided with internal thread, its characterized in that on the inner wall of locating hole: an anti-corrosion copper layer is provided on the surface of the internal thread. The utility model has the advantages that: the copper layer is arranged on the thread surface of the nut and directly contacted with corrosive liquid, so that the corrosion resistance of the internal thread is improved, the internal thread is not easy to wear, the thread teeth can be kept intact for a long time, and the service life of the nut body is prolonged; in addition, the surface of the copper layer is uniform and has few burrs, so that the damage to the connecting column can be reduced, and the situation of difficult nut disassembly is avoided.
Description
Technical Field
The utility model relates to a two board-like injection molding machine preparation technical field especially indicate a set nut for on injection molding machine.
Background
The present chinese utility model patent that has an application number CN201220619743.3 named as "an injection molding machine elasticity pull rod nut" discloses an injection molding machine elasticity pull rod nut, including nut body and the cone, be equipped with the screw hole at the hole of nut body and cone, the department of joining between the binding face of nut body and the cone has the dispersion stress off-load groove of continuous rigidity design, and dispersion stress off-load groove radius is 3 ~ 8mm for R. The utility model discloses a nut surface's dispersion stress groove with stress to the rear portion dispersion of keeping away from binding face, reduce in the first several tooth atresss of keeping away from binding face, root of tooth stress greatly reduced, internal screw-thread atress trend is even to make the distribution of stress that receives more equipartition on the pull rod screw thread, stress concentration greatly reduced, fatigue crack production problem is alleviated, the life of pull rod improves greatly. However, the thread of the draw rod nut is easily worn, the life span of the draw rod nut is short, and thus the structure of the draw rod nut needs to be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide a screw thread corrosion-resistant, difficult wearing and tearing, long service life's a set nut for on injection molding machine.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this a positioning nut for on injection molding machine, including connecting the nut body on two board-like injection molding machines the middle part axial of nut body is provided with the locating hole be provided with internal thread, its characterized in that on the inner wall of locating hole: an anti-corrosion copper layer is provided on the surface of the internal thread.
As an improvement, the copper layer is a uniform surface layer which enables the surface roughness of the internal thread to reach Ra3.2-Ra1.6.
The thickness of the uniform surface layer is 0.06-0.2 mm.
Further improved, the overlook projection of the nut body is in a regular hexagon shape.
As an improvement, a positioning seat is arranged on the side wall of the movable template, a connecting column penetrates through the positioning seat, connecting threads are respectively arranged at two ends of the connecting column, when the connecting column penetrates through the positioning seat, two nut bodies are screwed on the corresponding connecting threads to position the connecting column on the positioning seat, a connecting lantern ring is movably sleeved on the connecting column between the upper nut body and the lower nut body, and the connecting lantern ring is fixed with the end part of a piston rod of the driving oil cylinder.
The improved structure is characterized in that a first gasket is arranged between the upper nut body and the top surface of the positioning seat, and a second gasket is arranged between the lower nut body and the bottom surface of the positioning seat.
Further improved, the driving oil cylinder comprises a cylinder body and a piston rod movably connected with the cylinder body, the piston rod is movably connected with a movable template of the two-plate injection molding machine, the cylinder body is movably connected with a fixed template of the two-plate injection molding machine, the cylinder body comprises a front cylinder cover, a rear cylinder cover and a cylinder body with openings at two ends and a circular radial section, the front opening of the cylinder body can be detachably connected with the front cylinder cover in a sealing way, the rear opening of the cylinder body can be detachably connected with the rear cylinder cover in a sealing way, the inner wall of the cylinder body is a smooth cambered surface with the surface roughness Ra0.1-Ra0.2 after mirror honing, the piston rod penetrates through the front cylinder cover, the cylinder inner cavity and the rear cylinder cover, the piston of the piston rod is located in the cylinder inner cavity and divides the cylinder inner cavity into a front cavity and a rear cavity which are mutually independent, the first oil inlet and outlet is located on the front cylinder cover and communicated with the front cavity, and the second oil inlet and outlet is located on the rear cylinder cover and communicated with the rear cavity.
The improved structure of the cylinder is characterized in that a connecting convex ring is arranged on the outer wall of the cylinder body and close to the rear opening, connecting screw holes are distributed in the connecting convex ring, fixing screw holes are distributed in the front end face of the rear cylinder cover, and when the rear cylinder cover is sleeved on the cylinder body, the connecting screw holes and the fixing screw holes are in one-to-one involution and can be fixed together through screws.
The improved cylinder cover is characterized in that a sealing groove capable of being matched with the rear opening of the cylinder body is formed in the inner wall of the rear cylinder cover, and when the rear cylinder cover is sleeved on the rear opening of the cylinder body, the rear end face of the cylinder body is abutted to the bottom face of the sealing groove.
The improved cylinder cover is characterized in that a cover surface bulge is arranged on the inner wall of the rear cylinder cover, the sealing groove is an annular groove between the cover surface bulge and the side wall of the rear cylinder cover, a concave cavity is arranged on the cover surface bulge, and the concave cavity is communicated with the rear cavity and the second oil inlet and outlet.
Compared with the prior art, the utility model has the advantages of: the copper layer is arranged on the thread surface of the nut and directly contacted with corrosive liquid, so that the corrosion resistance of the internal thread is improved, the internal thread is not easy to wear, the thread teeth can be kept intact for a long time, and the service life of the nut body is prolonged; in addition, the surface of the copper layer is uniform and has few burrs, so that the damage to the connecting column can be reduced, and the situation of difficult nut disassembly is avoided.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a perspective view of the nut body of FIG. 2;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is an exploded view of the alternative construction of FIG. 1;
FIG. 7 is a perspective view of the drive cylinder of FIG. 6;
FIG. 8 is an exploded view of the structure of FIG. 7;
FIG. 9 is a side elevational view of FIG. 7;
fig. 10 is a cross-sectional view taken along line B-B of fig. 9.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 10, the positioning nut for an injection molding machine according to the present embodiment includes a nut body 5 connected to a two-plate type injection molding machine, a positioning hole is axially formed in a middle portion of the nut body 5, an internal thread 51 is formed on an inner wall of the positioning hole, and an anti-corrosion copper layer 511 is formed on a surface of the internal thread 51. The copper layer 511 is a uniform surface layer for making the surface roughness of the female screw 51 to be ra3.2 to ra 1.6. The thickness of the uniform surface layer is 0.06-0.2 mm. The nut body 5 has a regular hexagonal plan view.
The side wall of the movable template 3 is provided with a positioning seat, a connecting column 23 penetrates through the positioning seat, two ends of the connecting column 23 are respectively provided with connecting threads, when the connecting column 23 penetrates through the positioning seat, two nut bodies 1 are screwed on the corresponding connecting threads to position the connecting column 23 on the positioning seat, a connecting sleeve ring 22 is movably sleeved on the connecting column 23 between the upper nut body and the lower nut body, and the connecting sleeve ring 22 is fixed with the end part of the piston rod 2 of the driving oil cylinder. A first gasket 24 is arranged between the upper nut body and the top surface of the positioning seat, and a second gasket is arranged between the lower nut body and the bottom surface of the positioning seat.
The driving oil cylinder comprises a cylinder body 1 and a piston rod 2 movably connected with the cylinder body 1, the piston rod 2 is movably connected with a movable template 3 of the two-plate injection molding machine, the cylinder body 1 is movably connected with a fixed template 4 of the two-plate injection molding machine, the cylinder body 1 comprises a front cylinder cover 11, the cylinder comprises a rear cylinder cover 13 and a cylinder body 12 with openings at two ends and a circular radial section, wherein the front opening of the cylinder body 12 can be detachably connected with a front cylinder cover 11 in a sealing way, the rear opening of the cylinder body 12 can be detachably connected with the rear cylinder cover 13 in a sealing way, the inner wall of the cylinder body 12 is a smooth arc surface with surface roughness Ra0.1-Ra0.2 after mirror surface honing, a piston rod 2 penetrates through the front cylinder cover 11, a cylinder inner cavity 121 and the rear cylinder cover 13, a piston 21 of the piston rod 2 is positioned in the cylinder inner cavity 121 and divides the cylinder inner cavity 121 into a front cavity and a rear cavity which are independent of each other, a first oil inlet and outlet 111 is positioned on the front cylinder cover 11 and communicated with the front cavity, and a second oil inlet and outlet 131 is positioned on the. A connecting convex ring 122 is arranged on the outer wall of the cylinder body 12 and close to the rear opening, connecting screw holes are distributed on the connecting convex ring 122, fixing screw holes are distributed on the front end face of the rear cylinder cover 13, and when the rear cylinder cover 13 is sleeved on the cylinder body 12, the connecting screw holes and the fixing screw holes are in one-to-one involution and can be fixed together through screws. A sealing groove which can be matched with the rear opening of the cylinder body 12 is formed in the inner wall of the rear cylinder cover 13, and when the rear cylinder cover 13 is sleeved on the rear opening of the cylinder body 12, the rear end face of the cylinder body 12 is abutted to the bottom face of the sealing groove. The inner wall of the rear cylinder cover 13 is provided with a cover surface bulge 132, the sealing groove is an annular groove between the cover surface bulge 132 and the side wall of the rear cylinder cover 13, the cover surface bulge 132 is provided with a concave cavity, and the concave cavity is communicated with the rear cavity and the second oil inlet and outlet 131.
The mirror honing is realized by grinding bars, the specific mirror honing process belongs to the prior art, and the used device can refer to the prior art, such as patent document with the patent number of CN201921288613.4 named as 'large-aperture inner hole finishing honing device'.
The nut used in the market of the injection molding machine at present is generally formed by 45# quenching and tempering, is not disassembled for a long time, is easy to cause oxidation, rusting and corrosion, and can not be disassembled. The design precision requirement of the whole equipment of a client is met, the abrasion and corrosion of mechanical parts of the whole equipment of the client are reduced, the stability of the equipment is improved, the service life of the whole equipment is prolonged, and the market competitiveness of the client is enhanced. The specific copper-inlaid process belongs to the prior art, and therefore, is not described in detail. After the copper layer is arranged, the wear resistance and the corrosion resistance of the threads on the nut body are improved by 50 percent compared with those of the common nut, and the surface roughness of the internal threads is Ra3.2-Ra1.6.
Claims (10)
1. The utility model provides a positioning nut for on injection molding machine, is including connecting nut body (5) on two board-like injection molding machines the middle part axial of nut body (5) is provided with the locating hole be provided with internal thread (51), its characterized in that on the inner wall of locating hole: an anti-corrosion copper layer (511) is provided on the surface of the internal thread (51).
2. The positioning nut of claim 1, wherein: the copper layer (511) is a uniform surface layer that makes the surface roughness of the internal thread (51) reach Ra3.2-Ra1.6.
3. The positioning nut of claim 2, wherein: the thickness of the uniform surface layer is 0.06-0.2 mm.
4. The positioning nut of claim 1, wherein: the overlook projection of the nut body (5) is in a regular hexagon shape.
5. The positioning nut as set forth in any one of claims 1 to 4, wherein: the side wall of the movable template (3) is provided with a positioning seat, a connecting column (23) penetrates through the positioning seat, connecting threads are respectively arranged at two ends of the connecting column (23), when the connecting column (23) penetrates through the positioning seat, two nut bodies (5) are screwed on the corresponding connecting threads to position the connecting column (23) on the positioning seat, a connecting sleeve ring (22) is movably sleeved on the connecting column (23) between the upper nut body and the lower nut body, and the connecting sleeve ring (22) is fixed with the end part of a piston rod (2) of a driving oil cylinder.
6. The positioning nut of claim 5, wherein: a first gasket (24) is arranged between the upper nut body and the top surface of the positioning seat, and a second gasket is arranged between the lower nut body and the bottom surface of the positioning seat.
7. The positioning nut of claim 6, wherein: actuating cylinder includes cylinder body (1), piston rod (2) with cylinder body (1) swing joint, piston rod (2) are connected with movable mould board (3) activity of two board-like injection molding machines, cylinder body (1) are connected with fixed mould board (4) activity of two board-like injection molding machines, cylinder body (1) are circular shape barrel (12) including preceding cylinder cap (11), back cylinder cap (13) and both ends opening and radial cross-section, the preceding opening of barrel (12) can be shirked and preceding cylinder cap (11) are sealed to be connected, the back opening of barrel (12) can be shirked and be connected with back cylinder cap (13) is sealed, the inner wall of barrel (12) is the smooth cambered surface through mirror surface honing rear surface roughness Ra0.1 ~ Ra0.2, piston rod (2) pass preceding cylinder cap (11), barrel inner chamber (121) and back cylinder cap (13), piston (21) of piston rod (2) are arranged in barrel inner chamber (121) and separate barrel inner chamber (121) for mutually independent The oil cylinder comprises a front cavity and a rear cavity, wherein a first oil inlet and outlet (111) is positioned on a front cylinder cover (11) and communicated with the front cavity, and a second oil inlet and outlet (131) is positioned on a rear cylinder cover (13) and communicated with the rear cavity.
8. The positioning nut of claim 7, wherein: the cylinder is characterized in that a connecting convex ring (122) is arranged on the outer wall of the cylinder body (12) and close to the rear opening, connecting screw holes are distributed in the connecting convex ring (122), fixing screw holes are distributed in the front end face of the rear cylinder cover (13), and when the rear cylinder cover (13) is sleeved on the cylinder body (12), the connecting screw holes and the fixing screw holes are in one-to-one involution and can be fixed together through screws.
9. The positioning nut of claim 8, wherein: the inner wall of the rear cylinder cover (13) is provided with a sealing groove which can be matched with the rear opening of the cylinder body (12), and when the rear cylinder cover (13) is sleeved on the rear opening of the cylinder body (12), the rear end face of the cylinder body (12) is abutted to the bottom face of the sealing groove.
10. The positioning nut of claim 9, wherein: set up capping arch (132) on the inner wall of back cylinder cap (13), the seal groove is the ring channel between capping arch (132) and back cylinder cap (13) lateral wall be provided with the cavity on capping arch (132), the cavity is linked together with back cavity and second oil import and export (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021798667.8U CN213117050U (en) | 2020-08-25 | 2020-08-25 | Positioning nut for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021798667.8U CN213117050U (en) | 2020-08-25 | 2020-08-25 | Positioning nut for injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN213117050U true CN213117050U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021798667.8U Active CN213117050U (en) | 2020-08-25 | 2020-08-25 | Positioning nut for injection molding machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023095649A1 (en) * | 2021-11-25 | 2023-06-01 | 株式会社日本製鋼所 | Ball screw mechanism, mold clamping device, and injection molding machine |
| JP7576017B2 (ja) | 2021-11-25 | 2024-10-30 | 株式会社日本製鋼所 | ボールねじ機構、型締装置、および射出成形機 |
-
2020
- 2020-08-25 CN CN202021798667.8U patent/CN213117050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023095649A1 (en) * | 2021-11-25 | 2023-06-01 | 株式会社日本製鋼所 | Ball screw mechanism, mold clamping device, and injection molding machine |
| JP7576017B2 (ja) | 2021-11-25 | 2024-10-30 | 株式会社日本製鋼所 | ボールねじ機構、型締装置、および射出成形機 |
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