CN211279586U

CN211279586U - A mould for processing half tooth for printer

Info

Publication number: CN211279586U
Application number: CN201922044030.3U
Authority: CN
Inventors: 李金旭
Original assignee: Weihai Hengrui Precision Machinery Co ltd
Current assignee: Weihai Hengrui Precision Machinery Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-18
Anticipated expiration: 2029-11-21

Abstract

The utility model belongs to the production field of moulding plastics discloses a mould for processing half tooth for printer, which comprises a mould body, the mould body includes gating system, forming system, system of loosing core, ejecting system and cooling system, the gating system includes sprue and subchannel, subchannel quantity is two, forming system includes mould benevolence, lower mould benevolence, it forms complete die cavity to go up mould benevolence and lower mould benevolence lock, the die cavity sets up to two, two the subchannel communicates with each other with two die cavities respectively. Two cavities are formed in one die, so that the two half-tooth formed parts can be formed simultaneously, and the production efficiency is high.

Description

A mould for processing half tooth for printer

Technical Field

The utility model relates to an injection moulding production field, in particular to a mould for processing half tooth for printer.

Background

Injection molding is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, accurate product size and capability of forming products with complex shapes, and the injection molding method is suitable for the fields of mass production, products with complex shapes and the like.

The components of the printer relate to a half-tooth for the printer, the half-tooth is plastic, as shown in fig. 1, the half-tooth for the printer is provided with a section of incomplete tooth form 200 and a boss 210, a section of hollow cylindrical protrusion is arranged on the boss, a platform 220 extends from the end face of the boss far away from the tooth form, and a side wall hole 230 is arranged on the side wall of the boss.

The half-tooth for the printer is produced by using the injection mold in the production process, the injection mold is produced in a mode of one mold and one cavity, only one finished product can be produced in a single injection molding process, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mould for processing half tooth for printer has two half tooth formed parts of can coproduction, advantage that production efficiency is high.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a mould for processing half tooth for printer, includes the mould body, the mould body includes gating system, molding system, system of loosing core, ejecting system and cooling system, gating system includes sprue and subchannel, subchannel quantity is two, molding system includes mould benevolence, lower mould benevolence, go up mould benevolence and lower mould benevolence lock and form complete die cavity, the die cavity sets up to two, two the subchannel communicates with each other with two die cavities respectively.

Through adopting above-mentioned technical scheme, when using the mould to mould plastics, plastics are shunted through the sprue and by the subchannel, and the plastics after the reposition of redundant personnel are gone up two die cavities between mould benevolence and the lower mould benevolence through the subchannel flow direction, can accomplish the shaping of two half tooth formed parts simultaneously, and production efficiency is high.

Further, the mould body is equipped with die carrier bottom plate, last die carrier, lower die carrier and lower die carrier bottom plate, it cooperatees with last die carrier to go up the die carrier bottom plate and is connected, go up mould benevolence and last die carrier and cooperate and be connected, lower mould benevolence and lower die carrier cooperate and are connected, it has sled mould hole to go up die carrier and lower die carrier.

Through adopting above-mentioned technical scheme, go up die carrier and lower die carrier and can fix a position and be connected last mould benevolence and lower mould benevolence, go up die carrier bottom plate and lower die carrier bottom plate and fix a position and be connected last die carrier and lower die carrier to divide into two parts about with whole mould, so the mould is difficult to dismantle so that the section bar internal pressure can be less than ambient pressure when the shaping, can be convenient separate last die carrier and lower die carrier through sled die hole.

Furthermore, the forming system further comprises an upper die frame bottom plate, the upper die frame bottom plate is arranged on the upper die frame, and a locking die plate is connected between the upper die frame bottom plate and the lower die frame.

Through adopting above-mentioned technical scheme, the mode locking plate can let the upper and lower two parts of mould be linked together, and the process of carrying with hoist and mount is from can not droing.

Furthermore, an exhaust groove is arranged in the lower die core.

Through adopting above-mentioned technical scheme, at the in-process of moulding plastics, only utilize the clearance of die cavity self to exhaust, exhaust efficiency is not high, can influence the shaping effect, sets up the air discharge duct and can improve exhaust efficiency, lets the shaping effect better.

Further, the gating system further comprises a gate, and the gate adopts a pin point type gate.

By adopting the technical scheme, the plastic flows into the cavity through the pouring gate for molding, the surface mark formed by the pin-point pouring gate is small, the filling is easy, and the product quality is high.

Furthermore, the ejection system comprises an ejector pin fixing plate and an ejector pin, wherein the ejector pin is arranged in the ejector pin fixing plate and inserted into the cavity of the lower die core.

By adopting the technical scheme, after molding, the ejector pin fixing plate moves to drive the ejector pin to move, and the ejector pin ejects the half-tooth molding piece to complete the injection molding process.

Further, the cooling system comprises a liquid inlet, a liquid outlet and a plurality of cooling pipes, and the cooling pipes are arranged around the cavity.

Through adopting above-mentioned technical scheme, the cooling can let the shaping faster in the forming process, and the cooling tube is arranged around the die cavity, can let refrigerated effect better.

Furthermore, the core pulling system comprises a sliding block, a limiting block, an inclined guide pillar and a shaping block, wherein the shaping block is matched with the profile characteristics of the half-tooth product.

Through adopting above-mentioned technical scheme, the design piece among the system of loosing core can be with the counter sink that can't come out through the section bar shaping on the half tooth lateral wall shaping to the setting of oblique guide post can be at the drawing of patterns in-process with the slider roll-off, does not influence the drawing of patterns.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the two sub-runners and the two cavities, two half-tooth formed parts can be formed in one-time injection molding process;

2. through the setting of the system of loosing core, can carry out the shaping with the hole on the unable fashioned half tooth boss lateral wall of die cavity, avoid secondary operation to the setting of oblique guide post can be at the drawing of patterns in-process with the slider roll-off, does not influence the drawing of patterns, thereby improves production efficiency.

Drawings

FIG. 1 is a schematic view of a half-tooth molding for a half-tooth printer;

FIG. 2 is a schematic structural diagram of the embodiment;

FIG. 3 is a sectional view showing the internal construction of the mold;

FIG. 4 is a schematic view of a lower mold core of the core pulling system;

fig. 5 is a cross-sectional view of fig. 4.

In the figure, 1, an upper mold frame bottom plate; 2. feeding a mold frame; 3. a lower die frame; 4. square iron; 5. a lower die frame bottom plate; 6. locking the template; 7. prying a mold pit; 8. positioning the guide post; 9. a main flow channel; 10. a shunt channel; 11. an upper die core; 12. a lower die core; 13. a cavity; 14. a cooling tube; 15. a thimble; 16. a thimble fixing plate; 17. a thimble guide rod; 18. a pressure-dividing gasket; 19. a core pulling system; 191. a first slider; 192. a second slider; 193. a third slider; 194. a limiting block; 195. an inclined guide post 196 and a shaping block; 200. tooth profile; 210. a boss; 220. a platform; 230. a sidewall aperture.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model provides a mould for processing half tooth for printer can produce half tooth formed part, as shown in fig. 2, and this mould is whole for the cuboid shape, and mould overall structure is by last to be last mold frame bottom plate 1, go up mold frame 2, lower mold frame 3, mated square iron 4, thimble fixed plate 16 and lower mold frame bottom plate 5 in proper order down.

As shown in fig. 2 and 3, an upper mold frame base plate 1 is connected with an upper mold frame 2 through bolts, an upper mold core 11 is embedded in the upper mold frame 2, and a lower mold core 12 is embedded in the lower mold frame 3. The whole mould is guided and positioned by a guide system, the guide system is realized by arranging positioning holes on the whole mould, positioning guide sleeves are arranged in the positioning holes of the upper mould base plate 1, the upper mould frame 2 and the lower mould frame 3, and positioning guide pillars 8 are arranged in the positioning guide sleeves in a penetrating manner, and the locking precision between the structures of the mould is ensured by the matching of the positioning guide sleeves and the positioning guide pillars 8 in the locking process of the structures of the mould.

As shown in fig. 2 and 3, after the upper mold frame 2 and the lower mold frame 3 are engaged with each other, a closed cavity 13 for processing the contour of the printer half tooth is formed between the upper core 11 and the lower core 12. The lower die carrier 3 is inconsistent with the upper surfaces of the paired square irons 4, the lower surfaces of the paired square irons 4 are connected to the positions, close to the two side walls, of the lower die carrier bottom plate 5 through bolts, and the thimble fixing plates 16 are arranged between the paired square irons 4.

As shown in fig. 2, a square groove is formed in the side wall of the upper mold frame base plate 1, a threaded hole is formed in the upper surface of the square groove, and a threaded hole is also formed in the side wall of the lower mold frame 3 and the threaded hole on the same vertical line. A rectangular strip-shaped mold locking plate 6 is placed on the side wall of the upper mold frame bottom plate 1 and the lower mold frame 3 with the threaded holes, through holes matched with the threaded holes in the upper mold frame bottom plate 1 and the lower mold frame 3 are formed in the mold locking plate 6, and the diameter of each through hole is slightly larger than that of each threaded hole. The through hole matched with the threaded hole of the lower die frame 3 on the lock die plate 6 is in a waist-shaped hole shape. The upper half part and the lower half part of the mould are connected together through the locking template 6, so that the upper part and the lower part are prevented from being separated in the hoisting process.

As shown in fig. 2, a core-pulling system 19 is provided between the upper mold frame 2 and the lower mold frame 3. The core back system 19 is used to shape the counter bored holes 230 in the side walls of the half tooth profile.

As shown in fig. 2, the upper mold frame 2, the lower mold frame 3 and the paired square irons 4 are provided with mold prying pits 7, and the mold prying pits 7 are triangular grooves. The mold prying pit 7 is used for facilitating the disassembly of the mold.

As shown in fig. 3, the interior of the mold can be divided into a pouring system, a molding system, a cooling system, an ejection system, an exhaust system and a core-pulling system 19 according to the structural process system, and all the systems cooperate with each other to complete the injection molding process of the mold.

As shown in fig. 3, the pouring system in the mold comprises a main runner 9 and branch runners 10, an opening of the main runner 9 is formed in the upper surface of an upper mold frame base plate 1, the main runner 9 passes through the upper mold frame base plate 1 and an upper mold frame 2, two branch runners 10 are formed in the upper mold frame 2 in a branching manner, and the branch runners 10 pass through the upper mold frame 2 and an upper mold core 11 and extend to a cavity 13 between the upper mold core 11 and a lower mold core 12.

As shown in fig. 3, a gate is provided between the runner 10 and the cavity 13, the gate connects the runner 10 with the cavity 13, and the gate of the mold is a pin-point gate.

As shown in fig. 3, the molding system in a mold includes an upper core 11 and a lower core 12, which are strictly speaking, a closed cavity 13 formed after the upper core 11 and the lower core 12 are fastened. Two mirror-image cavities 13 are arranged in the die, the two cavities 13 are respectively connected with the two sub-runners 10 through pouring gates, two cavities in one die are realized, and two half-tooth formed parts can be produced simultaneously.

As shown in fig. 3, the cooling system in the mold comprises a liquid inlet, a liquid outlet and a plurality of cooling pipes 14, wherein the liquid inlet and the liquid outlet are respectively arranged on two side walls of the upper mold frame 2, the cooling pipes 14 are connected with the liquid inlet and the liquid outlet, and the periphery of the cavity 13 of the cooling pipe 14 is in the way of cooling the cavity 13 when cooling liquid flows through the cooling pipes 14.

As shown in fig. 3, the ejection system in the mold comprises an ejector pin fixing plate 16 and an ejector pin 15, wherein the ejector pin fixing plate 16 is located on the lower mold frame bottom plate 5, an ejector pin guide rod 17 is arranged on the upper surface of the ejector pin fixing plate 16, a return spring is sleeved on the ejector pin guide rod 17, a counter bore matched with the ejector pin guide rod 17 and the return spring is arranged on the lower surface of the lower mold frame 3, the ejector pin guide rod 17 is inserted into the counter bore, and the return spring abuts against the counter end face of the counter bore.

As shown in fig. 3, a plurality of thimbles 15 are disposed in the thimble fixing plate 16, an upper end of each thimble 15 abuts against the cavity 13 of the lower mold core 12, and abuts against a lower surface of the half-tooth formed part after the injection molding is completed, and when the thimble fixing plate 16 moves linearly upward, the thimble 15 is driven to move to push the half-tooth formed part upward.

As shown in fig. 3, a pressure-dividing pad 18 is provided between the needle fixing plate 16 and the lower mold base plate 5 to reduce the impact on the lower mold base plate 5 when the needle fixing plate 16 is returned.

As shown in fig. 4, the core-pulling system 19 in the mold comprises sliding blocks, limiting blocks 194, inclined guide pillars 195 and shaping blocks 196, the limiting blocks 194 are arranged in pairs and connected to the lower mold frame 3 through bolts, the distance between the limiting blocks 194 is the width of the sliding blocks, and the sliding blocks can slide between the limiting blocks 194.

As shown in fig. 4 and 5, the slider includes a first slider 191, a second slider 192, and a third slider 193, the first slider 191 and the second slider 192 are connected by a sliding groove fit, and the third slider 193 is disposed on the first slider 191.

As shown in fig. 4 and 5, the end surface of the first sliding block 191 abuts against the side walls of the upper mold core 11 and the lower mold core 12, the second sliding block 192 extends into the position of the cavity 13 between the upper mold core 11 and the lower mold core 12, the end surface of the second sliding block 192 is shaped to match the end surface of the half-tooth molding member, the end of the second sliding block 192 is inserted into the shaping block 196, the shaping block 196 is inserted into the cavity 13 between the upper mold core 11 and the lower mold core 12, and the shaping block 196 is shaped to match the side wall hole 230 of the half-tooth product. The side wall holes 230 on the half-tooth profile can be machined by the shaping action of the shaping blocks 196 during injection molding.

As shown in fig. 4 and 5, the first slider 191 is provided with an inclined counter bore to which the inclined guide post 195 is fitted, the third slider 193 is provided with an inclined through hole to which the inclined guide post 195 is fitted, and the inclined guide post 195 is inserted into the counter bore and the through hole.

As shown in fig. 4 and 5, the inclined guide post 195 is arranged because the upper mold frame 2 is separated from the lower mold frame 3 during the mold stripping process, and the inclined guide post 195 is driven to be separated from the through hole and the counter sink during the separation process, and during the separation process, because the through hole and the counter sink are arranged in an inclined manner, a horizontal component force in a direction away from the cavity 13 is generated, and the component force slides out the slide block to a position away from the cavity 13, so that the mold ejection process of the subsequent ejector pin 15 is not affected.

The specific implementation process comprises the following steps: in the injection molding process, an upper die frame bottom plate 1, an upper die frame 2, a lower die frame 3, paired square irons 4, an ejector pin fixing plate 16 and a lower die frame bottom plate 5 of the mold are buckled through a positioning guide pillar 8 and a positioning guide sleeve of a guide system.

Then, the molten plastic is injected into the main runner 9 from the opening of the main runner 9 on the upper mold frame bottom plate 1, the plastic branches along the main runner 9 and through the branch runners 10, and the branched plastic flows along the branch runners 10 to the gate and finally flows out from the gate.

The plastic flowing out fills the cavity 13 between the upper mold core 11 and the lower mold core 12 and gradually becomes the shape of the half-tooth formed part, and in the process again, the cooling liquid cools the plastic through the cooling pipe 14 to help the plastic to be rapidly formed.

After the plastic is molded, the mold is separated from the upper and lower mold frames 2 and 3 to expose the molded half-tooth part. At this time, the thimble fixing plate 16 is driven to move vertically upward, and the thimble fixing plate 16 moves the thimble 15 which abuts against the lower surface of the semi-toothed molded product, thereby positioning the semi-toothed molded product upward and separating the semi-toothed molded product from the lower mold core 12. The injection molding process of the half-tooth for the printer is completed through the series of actions.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a mould for processing half tooth for printer, includes the mould body, the mould body includes gating system, molding system, system of loosing core (19), ejecting system and cooling system, its characterized in that: the pouring system comprises a main runner (9) and runners (10), the number of the runners (10) is two, the forming system comprises an upper die core (11) and a lower die core (12), the upper die core (11) and the lower die core (12) are buckled to form a complete die cavity (13), the die cavity (13) is divided into two parts, and the runners (10) are communicated with the two die cavities (13) respectively.

2. The mold for processing a half tooth for a printer according to claim 1, wherein: the mould body is equipped with die carrier bottom plate (1), last die carrier (2), lower die carrier (3) and lower die carrier bottom plate (5), go up die carrier bottom plate (1) and match with last die carrier (2) and be connected, go up mould benevolence (11) and match with last die carrier (2) and be connected, lower mould benevolence (12) and lower die carrier (3) cooperate and are connected, it is equipped with sled mould hole (7) to go up die carrier (2) and lower die carrier (3).

3. The mold for processing a half tooth for a printer according to claim 2, wherein: the forming system further comprises an upper die carrier bottom plate (1), the upper die carrier bottom plate (1) is arranged on the upper die carrier (2), and a locking die plate (6) is connected between the upper die carrier bottom plate (1) and the lower die carrier (3).

4. The mold for processing a half tooth for a printer according to claim 1, wherein: an exhaust groove is arranged in the lower die core (12).

5. The mold for processing a half tooth for a printer according to claim 1, wherein: the gating system further comprises a gate, and the gate adopts a pin point type gate.

6. The mold for processing a half tooth for a printer according to claim 1, wherein: the ejection system comprises an ejector pin (15) fixing plate and an ejector pin (15), wherein the ejector pin (15) is arranged in the ejector pin (15) fixing plate and inserted into the cavity (13) of the lower die core (12).

7. The mold for processing a half tooth for a printer according to claim 1, wherein: the cooling system comprises a liquid inlet, a liquid outlet and a plurality of cooling pipes (14), wherein the cooling pipes (14) are arranged around the cavity (13).

8. The mold for processing a half tooth for a printer according to claim 1, wherein: the core-pulling system (19) comprises a sliding block, a limiting block (194), an inclined guide post (195) and a shaping block (196), wherein the shaping block (196) is matched with the characteristics of a side wall hole (230) of a half-tooth product.