CN209566446U - Mould structure with thread core - Google Patents

Abstract

The utility model relates to a kind of mould structure with thread core, including upper mold and lower die, the upper mold includes upper mould fixed plate, cope plate and hot runner manifold, and upper mold core is equipped on cope plate；Lower die includes lower mold fixed plate, lower template and lower die feet, and lower mold core is equipped in lower template；Thread core is set between upper mold core and lower mold core, thread core passes through rotation drawing mechanism demoulding, rotating drawing mechanism includes transmission shaft, transmission gear, driven gear, thread bush and driving assembly, thread core is the rotation axis of driven gear, in the tail portion of thread core, screw thread is exited in setting, exits and is threaded into thread bush.Driven gear movement is driven by using transmission gear, the turned position of thread core can be controlled, it is not in stuck and appearance the case where turn over dead point, improve the working efficiency of mold, multiple driven gear rotations are controlled by a transmission gear, realize the synchronous demoulding of multiple thread cores.

Description

Mould structure with thread core

Technical field

The utility model relates to one of auto-parts production molds, more particularly, to a kind of with thread core Mould structure.

Background technique

With the development of society, the automobile on road surface is also more and more, automobile is assembled by various components, automobile There are many used components, and there are many plastic parts using injection molding, connected in order to facilitate between part by screw It connects, many screw threads can be designed on plastic part, it will usually which embedding nut is realized in plastic part, but has some nonstandard screw threads just to need It to be made on plastic part, manufacturing process is to need to punch in corresponding position after plastic piece shaping, later to punching Position carries out tapping, increases forming step in this way and reduces production efficiency, therefore some enterprises use in plastic part injection molding When, while thread forming being come out, it is necessary to thread core is used, thread core needs to take out by rotation in demoulding, mesh It is external hydraulic motor that the preceding power source to rotating thread type core, which uses at most, in use, external hydraulic motor Revolving speed and terminal be unable to accurately control, often make that thread core turns over dead-centre position and stuck turn of thread core is motionless Situation, and the power output of external hydraulic motor is asynchronous with die sinking, causes the production cycle elongated, increases cost.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of mould structures with thread core, it makes outer The speed for setting power source reduces, while can be precisely controlled, and is not in turn over dead point and the appearance of stuck situation.

The technical solution adopted by the utility model to solve its technical problems is that: a kind of mold knot with thread core Structure, including upper mold and lower die, the upper mold include upper mould fixed plate, cope plate and are set to upper mould fixed plate and cope plate Between hot runner manifold, on the cope plate be equipped with upper mold core；The lower die include lower mold fixed plate, lower template and The lower die feet being set between lower mold fixed plate and lower template is equipped with lower mold core in the lower template；Described upper Thread core is set between mold core and lower mold core, and the thread core is taken out by rotation drawing mechanism demoulding, the rotation Mechanism includes the transmission shaft for being set to lower template side, the transmission gear being set on transmission shaft, engages with transmission gear out The driving assembly of driven gear, the thread bush being fixed in lower template and driving transmission gear rotation, the thread core For the rotation axis of driven gear, in the tail portion of the thread core, screw thread is exited in setting, and described exiting is threaded into screw thread In set.

Further specifically, the driving assembly include be set to upper mold and with upper mold move up and down rack gear, set The driving gear being placed on transmission shaft, the driving gear are engaged with rack.

Further specifically, rack gear adjustment of the setting for adjusting gear rack active length between the upper mold and rack gear Component.

Further specifically, the rack gear adjustment component includes adjusting fixed block, connecting across adjustment fixed block and rack gear The adjusting screw connect and the fixing screws for being fixed on upper mold for fixed block will to be adjusted.

Further specifically, the anti-back component for withstanding thread core is arranged by the thread bush.

Further specifically, the anti-back component includes the slide being fixed in lower template, is set on slide and prevents Back skating block, the shovel being fixed on cope plate, are arranged taper pin in the shovel, and taper pin is arranged on the anti-back sliding block Hole, the taper pin are inserted into pin hole；Setting insertion thread bush is interior on the anti-back sliding block and resists the pin of thread core Axis, the pin diameter are less than the internal diameter of thread bush.

Further specifically, there are two the thread cores, there are two the corresponding driven gears.

Further specifically, being equipped with type core guide pad in the lower template, the type core guide pad center opens up There is through-hole, the thread core moves in through-hole.

Further specifically, the number of teeth of the transmission gear is 80, the number of teeth of the driven gear is 20, institute The modulus of the transmission gear and driven gear stated is 2.5.

The beneficial effects of the utility model are: driving driven gear by using transmission gear after using the above structure Movement, can control the turned position of thread core, be not in stuck and appearance the case where turn over dead point, improve mould The working efficiency of tool controls multiple driven gears by a transmission gear and rotates, and realizes the synchronous demoulding of multiple thread cores, Structure is simple, easy to use.

Detailed description of the invention

Fig. 1 is the schematic view of the front view of the utility model；

Fig. 2 is the structural schematic diagram of the utility model driving assembly.

In figure: 1, upper mould fixed plate；2, cope plate；3, hot runner manifold；4, upper mold core；5, lower mold fixed plate；6, lower template； 7, lower die feet；8, lower mold core；9, thread core；10, transmission shaft；11, transmission gear；12, driven gear；13, thread bush； 14, driving assembly；15, rack gear adjusts component；16, anti-back component；17, type core guide pad；141, rack gear；142, driving gear； 151, fixed block is adjusted；152, adjusting screw；153, fixing screws；161, slide；162, anti-back sliding block；163, shovel；164, Taper pin；165, pin shaft.

Specific embodiment

The present invention is explained in detail with reference to the accompanying drawing.

A kind of mould structure with thread core as shown in Figure 1, including upper mold and lower die, the upper mold include upper mold Fixed plate 1, cope plate 2 and the hot runner manifold 3 being set between upper mould fixed plate 1 and cope plate 2, in the cope plate 2 It is equipped with upper mold core 4；The lower die includes lower mold fixed plate 5, lower template 6 and is set to lower mold fixed plate 5 and lower template 6 Between lower die feet 7, in the lower template 6 be equipped with lower mold core 8；It is arranged between the upper mold core 4 and lower mold core 8 Thread core 9, the thread core 9 include being set to down by rotation drawing mechanism demoulding, the rotation drawing mechanism The transmission shaft 10 of 6 side of template, the transmission gear 11 being set on transmission shaft 10, the driven gear engaged with transmission gear 11 12, the driving assembly 14 that the thread bush 13 and driving transmission gear 11 being fixed in lower template 6 rotate, the thread core 9 be the rotation axis of driven gear 12, and in the tail portion of the thread core 9, screw thread is exited in setting, and described exiting is threaded into In thread bush 13.When plastic part is after in-mold molding, the nonstandard screw thread on plastic part has also been formed at this time, needs to be opened, After upper mold moves upwards, while driving assembly 14 drives transmission shaft 10 to rotate, and transmission shaft 10 is rotated with nutating gear 11, transmission Gear 11 drives driven gear 12 to rotate, the rotation axis due to thread core 9 as driven gear 12, so that thread core 9 rotations, and the screw-internal thread fit of 9 tail portion of thread core exited in screw thread and thread bush 13, thread core 9 is while rotating It retreats, when rotating to required position i.e. thread core 9 completely disengaging plastic part, 14 stop motion of driving assembly, at this time Plastic part is taken out, driving assembly 14 inverts and by transmission gear 11 and driven gear 12 thread core 9 is inserted into later In mold, continuation forms next time.

Driving assembly 14 can be rotated using motor driven transmission shaft 10, reduce revolving speed by transmission gear 11, it is convenient into Row control；And need to control it using motor driven and moved synchronously with die sinking, it needs to complete using external control, increase into This, as shown in Figure 2 therefore is designed as driving assembly 14 including being set to upper mold and with the rack gear 141 of upper mold up and down motion, setting In the driving gear 142 on transmission shaft 10, the driving gear 142 is engaged with rack gear 141, and mold die sinking, upper mold is transported upwards Dynamic, band carry-over bar 141 moves upwards, and rack gear 141 drives driving gear 142 to rotate, and driving gear 142 drives 10 turns of transmission shaft It is dynamic, so that transmission gear 11 rotates, power is provided, which makes the demoulding that thread core 9 is opened while die sinking Movement, the demoulding of thread core 9 is also completed while die sinking is completed.According to the circle number of rotation needed for thread core 9, rack gear 141 Length controlled, pass through between the upper mold and rack gear 141 setting be used for adjusting gear rack active length tooth Item adjusts component 15 and realizes, rack gear adjusts component 15 including adjusting fixed block 151, passing through adjustment fixed block 151 and the company of rack gear 141 The adjusting screw 152 connect and the fixing screws 153 for being fixed on upper mold for fixed block 151 will to be adjusted, when rack gear 141 is too long When, it is shortened by screwing the time that adjusting screw 152 contacts rack gear 141 with driving gear 142, to control thread core 9 adjustment position；When rack gear 141 is too long, by reversely rotating adjusting screw 152, so that rack gear 141 is downwards and driving gear The time of 142 contacts is elongated.

In the actual production process, if do not positioned to the position of thread core 9, it is outside to will lead to thread core 9 Side is mobile, and design requirement is not achieved so as to cause the screw thread on plastic part, substandard products occurs；Therefore it is arranged by the thread bush 13 For withstanding the anti-back component 16 of thread core 9, the anti-back component 16 includes the slide 161 being fixed in lower template 6, sets The anti-back sliding block 162 being placed on slide 161, the shovel 163 being fixed on cope plate 2, are arranged taper pin in the shovel 163 164, pin hole is set on the anti-back sliding block 162, and the taper pin 164 is inserted into pin hole；The anti-back sliding block Setting insertion thread bush 13 is interior on 162 and resists the pin shaft 165 of thread core 9, and 165 diameter of pin shaft is less than thread bush 13 Internal diameter；When plastic part is formed, the pin shaft 165 of the cooperation of anti-back sliding block 162 thereon, which resists thread core 9, makes it not It can move out；It after plastic piece shaping, needs to be opened, upper mold drives shovel 163 to move upwards, and shovel 163 drives taper pin 164 move upwards, and since the cooperation of taper pin 164 and pin hole is so that the anti-back sliding block 162 with pin hole moves outward, allow Opening the space in thread bush 13 facilitates thread core 9 to demould.

Based on there are two above structure thread cores 9 as needed, corresponding driven gear 12 is also provided with two, and two Driven gear 12 is controlled by the same transmission gear 11, and corresponding anti-back component 16 is also provided with two groups；The transmission gear 11 number of teeth is 80, and the number of teeth of the driven gear 12 is 20, and the number of teeth of driving gear 142 is 20, driving gear 142, the modulus of transmission gear 11 and driven gear 12 is 2.5；Type core guide pad 17, institute are equipped in the lower template 6 17 center of type core guide pad stated offers through-hole, and the thread core 9 moves in through-hole, it is convenient to thread core 9 into Row guiding, prevents its sideslip, improves precision.

To sum up, cooperate driven gear 12 to rotate thread core 9 by transmission gear 11, improve rotation precision, and It can according to need and controlled；Driving is combined with driving gear 142 by rack gear 141, realizes driving with mold die sinking simultaneously It carries out, realization, which synchronizes, saves the time, improves working efficiency；In forming process, thread core 9 is guaranteed by anti-back component 16 The quality of product is improved so that it will not be displaced outwardly in position.

It is emphasized that: the above is only presently preferred embodiments of the present invention, not make in any form to the present invention Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, All of which are still within the scope of the technical scheme of the invention.

Claims (9)

1. a kind of mould structure with thread core, including upper mold and lower die, the upper mold include upper mould fixed plate (1), Cope plate (2) and the hot runner manifold (3) being set between upper mould fixed plate (1) and cope plate (2), in the cope plate (2) upper mold core (4) are equipped with；The lower die includes lower mold fixed plate (5), lower template (6) and is set to lower mold fixed plate (5) the lower die feet (7) between lower template (6) is equipped with lower mold core (8) in the lower template (6)；In the upper mold Thread core (9) are set between core (4) and lower mold core (8), which is characterized in that the thread core (9) passes through rotation extraction Mechanism demoulding, the rotation drawing mechanism include the transmission shaft (10) for being set to lower template (6) side, are set to transmission shaft (10) transmission gear (11) on, the driven gear (12) engaged with transmission gear (11), the screw thread being fixed on lower template (6) It covers (13) and drives the driving assembly (14) of transmission gear (11) rotation, the thread core (9) is driven gear (12) Rotation axis, the thread core (9) tail portion setting exit screw thread, described exiting is threaded into thread bush (13) It is interior.

2. the mould structure according to claim 1 with thread core, which is characterized in that the driving assembly (14) Including being set to upper mold and the rack gear (141) to move up and down with upper mold, the driving gear being set on transmission shaft (10) (142), the driving gear (142) is engaged with rack gear (141).

3. the mould structure according to claim 2 with thread core, which is characterized in that in the upper mold and rack gear (141) setting adjusts component (15) for the rack gear of adjusting gear rack (141) active length between.

4. the mould structure according to claim 3 with thread core, which is characterized in that the rack gear adjusts component (15) include adjustment fixed block (151), pass through adjustment fixed block (151) adjusting screw (152) that is connect with rack gear (141) and The fixing screws (153) for being fixed on upper mold for fixed block (151) will to be adjusted.

5. the mould structure according to claim 1 with thread core, which is characterized in that in the thread bush (13) The anti-back component (16) for withstanding thread core (9) is arranged in side.

6. the mould structure according to claim 5 with thread core, which is characterized in that the anti-back component (16) Including the slide (161) being fixed on lower template (6), the anti-back sliding block (162) being set on slide (161), it is fixed on upper mold Shovel (163) on plate (2) is arranged taper pin (164) in the shovel (163), sets on the anti-back sliding block (162) Pin hole is set, the taper pin (164) is inserted into pin hole；Setting insertion thread bush (13) on the anti-back sliding block (162) Pin shaft (165) that is interior and resisting thread core (9), the pin shaft (165) diameter are less than the internal diameter of thread bush (13).

7. the mould structure according to claim 6 with thread core, which is characterized in that the thread core (9) There are two, there are two the corresponding driven gears (12).

8. the mould structure according to claim 1 with thread core, which is characterized in that in the lower template (6) It is equipped with type core guide pad (17), described type core guide pad (17) center offers through-hole, and the thread core (9) is logical It is moved in hole.

9. the mould structure according to claim 1 with thread core, which is characterized in that the transmission gear (11) The number of teeth be 80, the number of teeth of the driven gear (12) is 20, the transmission gear (11) and driven gear (12) Modulus be 2.5.