CN201220464Y - Plastic worm screw mould - Google Patents
Plastic worm screw mould Download PDFInfo
- Publication number
- CN201220464Y CN201220464Y CNU2008200887161U CN200820088716U CN201220464Y CN 201220464 Y CN201220464 Y CN 201220464Y CN U2008200887161 U CNU2008200887161 U CN U2008200887161U CN 200820088716 U CN200820088716 U CN 200820088716U CN 201220464 Y CN201220464 Y CN 201220464Y
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Abstract
A die for forming a plastic worm comprises a moving die part and a fixed die part; step-shaped contact surfaces between a fixed die cavity positioned in a fixed die cavity plate, a worm cavity positioned at the center of a worm cavity plate, and a moving die cavity positioned in a moving die cavity plate are matched and tightly sleeved with each other up and down in sequence; the head of a small insert below the moving die cavity is positioned below the worm cavity body in the worm cavity; the bottom of the small insert is closely connected with a moving die insert in an axially rotating drive mechanism driven by a chain wheel; and an ejection screw positioned at the center of the fixed die part is matched with an ejection screw gear of the axially rotating drive mechanism through screw threads. The die adopts the axially rotating drive mechanism driven by the chain wheel; the ejection screw moves axially to divide the die and a plate, and synchronously a product automatically drops from the worm cavity in an rotating manner, so that the technical problem of difficulty in demoulding when the plastic worm is made is solved; products made from the die have good mechanical properties, high production efficiency, and high product accuracy, and the current situation of long-term dependence on importing plastic worms is improved.
Description
Technical field
The utility model relates to a kind of mould mechanical manufacturing field, specifically a kind of mould that is used for plastic endless screw.
Prior art
Along with the development of chemical engineering industry, various novel high polymer materials come out, and the raw material of making parts are provided for each industry manufacture field.Plastic products have progressively substituted expensive alloy material at industrial circles such as space flight, aviation, electronics, machinery, boats and ships and automobiles owing to have premium properties such as in light weight, that intensity is high, the operation noise is low, self-lubricating property is good, are widely used.Plastic endless screw and gear, helical gear, worm gear is the same all is a kind of product with helical surface, if having more highly difficult with conventional mould molding manufacturing.How the scientific and technical personnel of this technical field are being perplexed in the demoulding always in actual production, and the technical barrier of the manufacturing of plastic endless screw is not well solved always.Chinese patent on July 7th, 2004 the disclosed patent No. be " 03249303.7 ", " plastic beveled wheel mould ", it adopts core to be contained in the tapered core, gear ring is fixedlyed connected with mold insert by bearing pin, mold insert is enclosed within the taper core, with it movingly, and cooperate with moving platen by bearing, fixed head be contained in moving platen below, and be connected with backing plate with bearing pin, push rod passes backing plate and tapered core, withstand under the helical gear, during the demoulding, first pull-up die cover plate, make between moving platen and the fixed head and open, core is extracted out from helical gear, and push rod moves up then, makes helical gear release gear ring and rotates mould.Though this mould is simple in structure, production efficiency is very low, causes product cost higher, and the product precision is low, the percent defective height.
The utility model content
The purpose of this utility model is that at the defective of above-mentioned prior art and deficiency a kind of location is accurate, product precision height for die industry provides, the plastic endless screw shaping mold of good mechanical performance.
The technical measures taked of the utility model are for achieving the above object: this plastic endless screw shaping mold, it comprises dynamic model part and cover half part, the top clamping plate of described cover half part, stripper plate, on the cover half cavity plate, be fixedly linked with guide pillar successively down, cover half cavity plate center is provided with the cover half die cavity, the worm screw cavity plate that it is characterized in that described dynamic model part, dynamic model cavity plate and dynamic model backing plate A are fixedly linked with guide pillar, described cover half die cavity and the worm screw die cavity that is positioned at worm screw cavity plate center, be arranged on the dynamic model die cavity of dynamic model cavity plate, socket is pressed successively down, feed channel in the cover half cavity plate communicates with worm screw cavity in the worm screw die cavity, little moulding mold insert is housed in the dynamic model die cavity, the top of this little moulding mold insert is positioned at the below of worm screw cavity, its bottom with by the dynamic model mold insert in the axial rotary drive mechanism of sprocket wheel drive near, described cover half part center is equipped with and is ejected screw rod, and this ejects screw rod and pushes up mutually with cover half die cavity briquetting.
Described axial rotary drive mechanism comprises the sprocket wheel by the oil pump driven rotary that is installed in the Bottom clamp plate, and this sprocket wheel is sleeved on and ejects on the screw gear and be fixedly linked with it, the center screw thread that ejects screw gear with eject the screw rod external screw thread and cooperate; Eject screw gear by idle pulley and dynamic model mold insert gears engaged, dynamic model mold insert gear is connected with the dynamic model mold insert is fastened to each other.
Be provided with 2 to 8 worm screw die cavities in the described worm screw cavity plate, the corresponding little moulding mold insert in each worm screw die cavity below, little moulding mold insert bottom all with by the dynamic model mold insert in the axial rotary drive mechanism of sprocket wheel drive near.
Described at the individual self-lubricating lining that is fixed in dynamic model backing plate A of each dynamic model mold insert overcoat unification, be linked in the outer upper and lower self-lubricating lining of dynamic model mold insert gear and be individually fixed on gear fixed plate A and the gear fixed head B, be sleeved on the self-lubricating lining that ejects outside the screw gear and be fixed on the dynamic model backing plate B.
Described between top clamping plate and the stripper plate, between cover half cavity plate and the worm screw cavity plate, be fixed with distance screws A, spacing screw rod B, distance screws C respectively between dynamic model cavity plate and the dynamic model backing plate A; Being fixed with nylon on the described worm screw cavity plate draws and climbs.
The utility model has solved and has made a plastic endless screw demoulding difficult technologies difficult problem for a long time because the axial rotary drive mechanism that adopts sprocket wheel to drive carries out the template separation by ejecting the worm screw axially-movable with product rotational automatic falling synchronously from the worm screw die cavity.And thermal insulation board is installed in the mould, and can guarantee that temperature reaches 190 ℃ in the mould, thereby make raw materials for plastics production fully reach melt temperature, guarantee that every mechanical property do not suffer a loss.Adopt plastic endless screw production efficiency height, the product precision height of the manufacturing of this mould, changed the present situation of the long-term dependence on import of this product.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that A-A among Fig. 1 is to cutaway view.
Fig. 3 is that B-B among Fig. 1 is to cutaway view.
Label among the figure: 1-centring ring, the 2-sprue bush, 3-distance screws A, the 4-top clamping plate, 5-cover half die cavity briquetting, the 6-stripper plate, 7-cover half cavity plate, 8-cover half die cavity, 9-worm screw die cavity, 10-worm screw cavity plate, 11-distance screws B, 12-dynamic model die cavity, 13-dynamic model cavity plate, 14-self-lubricating lining, 15-dynamic model mold insert, 16-dynamic model backing plate A, the 17-thermal insulation board, 18-gear fixed plate A, 19-dynamic model mold insert gear, the 20-idle pulley, 21-gear fixed head B, 22-dynamic model backing plate B, the 23-Bottom clamp plate, the 24-sprocket wheel, the 25-runner, the 26-feed channel, 27-nylon draws climbs, 28-worm screw cavity, 29-ejects screw rod, 30-distance screws C, the little moulding mold insert of 31-, 32-dynamic model die cavity briquetting, 33-ejects screw gear.
The specific embodiment
This plastic endless screw shaping mold comprises cover half part and dynamic model part.
As shown in Figure 1 and Figure 2, the top clamping plate 4 in the cover half part, stripper plate 6, cover half cavity plate 7 are upper and lower is fixedly linked with guide pillar successively.The centring ring 1 that is arranged in top clamping plate 4 centers can make mould be fixed on injection machine.The centring ring center is provided with centre bore, and sprue bush 2 is contained in the centring ring center, and nozzle stretches into the centre bore injected plastic, and enters feed channel 26 by the runner 25 that is arranged in cover half die cavity briquetting 5.Between top clamping plate 4 and stripper plate 6, distance screws A3 is housed.Be provided with cover half die cavity 8 in the cover half cavity plate 7, the cover half cavity plate briquetting 5 of top is positioned at cover half cavity plate 7 centers, and cover half cavity plate 7 with press mutually with cover half die cavity 8.
As Fig. 1, shown in Figure 3, worm screw cavity plate 10, the dynamic model cavity plate 13 in the dynamic model part, dynamic model backing plate A16 is upper and lower is fixedly linked with guide pillar successively.Worm screw cavity plate 10 centers are embedded with worm screw die cavity 9, and both link to each other with bolting, and worm screw cavity plate 10 also is fixed with nylon and draws and climb 27.Worm screw die cavity 9 centers are provided with the worm screw cavity 28 of helical surface, are opened in the top that feed channel 26 in the cover half die cavity 8 is positioned at this worm screw cavity 28.The dynamic model die cavity 12 that is contained in the dynamic model cavity plate 13 is inlaid between worm screw die cavity 9 and the dynamic model die cavity briquetting 32.Described cover half die cavity 8, the step contact-making surface that matches each other is set on worm screw die cavity 9 and the dynamic model die cavity 12, and upper and lower tight successively socket is pressed, little moulding mold insert 31 is housed in the dynamic model die cavity 12, these little moulding mold insert 31 tops are positioned at the below of worm screw cavity 28, and by the drive mechanism of axial rotation.Axially driving mechanism of rotation comprises the dynamic model mold insert 15 that is installed among the dynamic model backing plate A16, ejects screw rod 29, and is fixedly mounted on gear fixed plate A 18, gear fixed head B21 middle gear group.Described dynamic model mold insert 15 be positioned at little moulding mold insert 31 the below and near.Dynamic model mold insert 15 built-in cooling water pipes.Described gear train comprises the sprocket wheel 24 that is installed in the Bottom clamp plate 23, with sprocket wheel 24 fixing eject screw gear 33, and with eject idle pulley 20, the dynamic model mold insert gear 19 that screw gear 33 meshes successively.Described sprocket wheel 24 with eject screw gear 33 fits after use the locating slot stationary positioned, both are rotated synchronously.The internal thread that ejects screw gear 33 cooperates with the external screw thread that ejects screw rod 29, ejects screw gear rotation drive and ejects screw rod 29 axially-movables.Eject screw gear 33 by idle pulley 20 and 19 engagements of dynamic model mold insert gear, dynamic model mold insert gear 19 is rotated synchronously.Dynamic model mold insert gear 19 is fixedly linked with key mutually with dynamic model mold insert 15, thereby drives dynamic model mold insert 15 rotation synchronously, and the little moulding mold insert 31 that drives above being positioned at rotates synchronously.
The outer wall of dynamic model mold insert is set with self-lubricating lining 14, and this lining 14 is fixed on the dynamic model backing plate A16; Be linked in dynamic model mold insert gear 19 outer upper and lower self-lubricating linings and be individually fixed on gear fixed plate A 18 and the gear fixed head B21, be sleeved on the self-lubricating linings that eject outside the screw gear 33 and be fixed on the dynamic model backing plate 22.
Between top clamping plate 4 and the stripper plate 6, between cover half cavity plate 7 and the worm screw cavity plate 13, be fixed with distance screws A3, distance screws B11, distance screws C30 respectively between dynamic model cavity plate 13 and the dynamic model backing plate A16.The top of top clamping plate 4, between gear fixed plate A 18 and dynamic model backing plate A16, thermal insulation board is housed respectively, to guarantee to reach predetermined higher mould temperature.
2～8 worm screw die cavities 9 preferably are installed in worm screw cavity plate 10, its top is corresponding with the corresponding cover half die cavity 8 that has feed channel 26, its below is relative with corresponding little moulding mold insert 31, the little moulding mold insert 31 of each correspondence all with each self-corresponding dynamic model mold insert 15 that drives by axial rotary drive mechanism near, with the fixing dynamic model mold insert gear 19 of dynamic model mold insert 15 by idle pulley 20 with eject screw gear 33 and mesh.Such mould can go out more than 2～8 product simultaneously, has improved the production efficiency height, has reduced product cost.
During die sinking, injection moulding machine mould open mechanism makes stripper plate 6 separate with cover half cavity plate 7, utilize and draw stock column to pull out feed channel 26 stub bars; Continue die sinking, top clamping plate 4 separates with stripper plate 6, and the sprue stub bar comes off, and stub bar can take out from mould; Continue die sinking, distance screws A3 reaches the limit of, and nylon draws climbs 27 and loosening under certain pulling force, and last cover half cavity plate 7 is separated with worm screw cavity plate 10, reaches the die sinking distance that injection machine is set always.Open hydraulic motor, drive sprocket wheel 24, make to eject screw gear 33 and rotate synchronously.Drive two partly actions owing to eject the rotation of screw gear 33: move toward the cover half direction with worm screw 29 beginnings that eject that eject screw gear 33 threaded engagement (1), promotes worm screw cavity plate 10 and separate with dynamic model cavity plate 13; (2) drive dynamic model mold insert gear 19 rotations that are engaged with the idle pulley 20 that ejects screw gear 33 engagement, drive then with the fixing dynamic model mold insert 15 of dynamic model mold insert gear 19 and rotate synchronously, plastic endless screw screws out from worm screw die cavity 9.Ejecting screw rod 29 continues to advance toward the cover half direction, distance screws B11 drives dynamic model cavity plate 13 and separates with dynamic model backing plate A16 to the limit, and driven model cavity 12 is released plastic endless screw, product is come off from dynamic model mold insert 15, and product drops from mould automatically because of deadweight like this.Eject screw rod 29 and continue to advance toward the cover half direction, distance screws C30 is during to the limit, and hydraulic motor begins opposite spin, makes to eject screw rod 29 and go back, and drives worm screw cavity plate 10, dynamic model cavity plate 13 is got back to the matched moulds state.Injection machine begins mold-closing injection, enters next working cycles.
Claims (6)
1, a kind of plastic endless screw shaping mold, it comprises dynamic model part and cover half part, the top clamping plate (4) of described cover half part, stripper plate (6), on the cover half cavity plate (7), be fixedly linked with guide pillar successively down, cover half cavity plate (7) center is provided with cover half die cavity (8), the worm screw cavity plate (10) that it is characterized in that described dynamic model part, dynamic model cavity plate (13) and dynamic model backing plate A (16) are fixedly linked with guide pillar, described cover half die cavity (8), worm screw die cavity (9) with worm screw cavity plate (10) center, the dynamic model die cavity (12) that is arranged in dynamic model cavity plate (13) is gone up the step contact-making surface that setting matches each other, and on, tight successively down socket is pressed, feed channel (26) in the cover half cavity plate (7) communicates with worm screw cavity (28) in the worm screw die cavity, little moulding mold insert (31) is housed in the dynamic model die cavity (12), the top of this little moulding mold insert (31) is positioned at the below of worm screw cavity (28), its bottom with by the dynamic model mold insert (15) in the axial rotary drive mechanism of sprocket wheel (24) drive near, described cover half part center is equipped with and is ejected screw rod (29), and this ejects screw rod and pushes up mutually with cover half die cavity briquetting (5).
2, plastic endless screw shaping mold according to claim 1, it is characterized in that described axial rotary drive mechanism comprises the sprocket wheel by the oil pump driven rotary (24) that is installed in the Bottom clamp plate (23), this sprocket wheel is sleeved on and ejects screw gear (33) and go up and be fixedly linked with it, the center screw thread that ejects screw gear (33) with eject screw rod (29) external screw thread and cooperate; Eject screw gear by idle pulley (20) and dynamic model mold insert gear (19) engagement, dynamic model mold insert gear (19) and fastened to each other connection of dynamic model mold insert (15).
3, plastic endless screw shaping mold according to claim 1 and 2, it is characterized in that being provided with in the described worm screw cavity plate (10) 2 to 8 worm screw die cavities (9), the corresponding little moulding mold insert (31) in each worm screw die cavity below, little moulding mold insert bottom all with by the dynamic model mold insert in the axial rotary drive mechanism of sprocket wheel (24) drive near.
4, plastic endless screw shaping mold according to claim 3, it is characterized in that described at the individual self-lubricating lining (14) that is fixed in dynamic model backing plate A (16) of each dynamic model mold insert (15) overcoat unification, be linked in the outer upper and lower self-lubricating lining of dynamic model mold insert gear (19) and be individually fixed on gear fixed plate A (18) and the gear fixed head B (21), be sleeved on the self-lubricating lining that ejects outside the screw gear (33) and be fixed on the dynamic model backing plate (22).
5, plastic endless screw shaping mold according to claim 4 is characterized in that described between top clamping plate (4) and the stripper plate (6), between cover half cavity plate (7) and the worm screw cavity plate (10), be fixed with distance screws A (3), spacing screw rod B (11), distance screws C (30) respectively between dynamic model cavity plate (13) and the dynamic model backing plate A (16).
6, plastic endless screw shaping mold according to claim 5 is characterized in that being fixed with on the described worm screw cavity plate nylon and draws and climb (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200887161U CN201220464Y (en) | 2008-06-11 | 2008-06-11 | Plastic worm screw mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200887161U CN201220464Y (en) | 2008-06-11 | 2008-06-11 | Plastic worm screw mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201220464Y true CN201220464Y (en) | 2009-04-15 |
Family
ID=40573982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200887161U Expired - Fee Related CN201220464Y (en) | 2008-06-11 | 2008-06-11 | Plastic worm screw mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201220464Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293383B (en) * | 2008-06-11 | 2010-06-09 | 宁波双林模具有限公司 | Plastic endless screw shaping mold |
| CN109664475A (en) * | 2018-12-25 | 2019-04-23 | 创维集团智能装备有限公司 | A kind of injection mold gear forming and stripper apparatus and its injection-moulding device |
-
2008
- 2008-06-11 CN CNU2008200887161U patent/CN201220464Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293383B (en) * | 2008-06-11 | 2010-06-09 | 宁波双林模具有限公司 | Plastic endless screw shaping mold |
| CN109664475A (en) * | 2018-12-25 | 2019-04-23 | 创维集团智能装备有限公司 | A kind of injection mold gear forming and stripper apparatus and its injection-moulding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20170611 |