CN216465958U

CN216465958U - Mould with screw thread mechanism of loosing core

Info

Publication number: CN216465958U
Application number: CN202122923039.9U
Authority: CN
Inventors: 王国勇
Original assignee: Wenzhou Jinhong Electrical Appliance Co ltd
Current assignee: Wenzhou Jinhong Electrical Appliance Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-10
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a die with a threaded core-pulling mechanism, which relates to the technical field of dies and comprises a fixed die and a movable die, wherein the fixed die comprises a fixed die seat, a fixed die plate is arranged on the fixed die seat, a fixed die core is arranged on the fixed die, the movable die comprises a movable die seat, a movable die plate is arranged on the movable die seat, the movable die plate is provided with a movable die core and a first driving motor, the first driving motor is in transmission connection with a side threaded core through a gear set, a sliding block is sleeved outside the gear set and can drive the side threaded core to slide transversely, and a push block which is in inclined push fit with the sliding block is arranged on the movable die seat, so that the stroke of pushing the side threaded core into a die cavity is fixed, the side threaded core is prevented from being screwed too long or not screwed in place, in-die demoulding can be realized, and the production efficiency is improved.

Description

Mould with screw thread mechanism of loosing core

Technical Field

The utility model relates to the technical field of dies, in particular to a die with a thread core-pulling mechanism.

Background

At present, the casing of some devices generally adopts the integrated into one piece that moulds plastics, because the wiring, demands such as equipment, some casing lateral parts need be equipped with the through-hole screw thread and are used for communicating the casing inside and outside, when current mould shaping lateral part through-hole screw thread, adopt the motor to drive the gear usually, push and extract the screw thread core, nevertheless because the rotational accuracy of motor is not enough, it is difficult control to cause the screw thread core to push the die cavity stroke easily, the easy screw in overlength of core or not screw in target in place, the screw in overlength can cause and hit the mould, screw in overlength can cause the screw thread tip deckle edge, influence the yields of product.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a die with a thread core-pulling mechanism, which aims to solve at least one defect in the prior art.

The technical scheme provided by the utility model is as follows:

the utility model provides a mould with screw thread mechanism of loosing core, includes cover half and movable mould, the cover half includes the cover half seat, be equipped with the fixed die board on the cover half seat, the cover half is equipped with cover half benevolence, the movable mould includes the movable mould seat, be equipped with the movable mould board on the movable mould seat, the movable mould board is equipped with movable mould benevolence, a driving motor passes through the gear train and is connected with the transmission of side screw thread core, the gear train overcoat is equipped with the slider, the slider can drive side screw thread core lateral slipping, be equipped with on the movable mould seat and constitute the push block that pushes away the complex to one side with the slider.

The push block is provided with a guide sliding groove.

Preferably, an elastic piece is arranged between the movable mould core and the sliding block.

Preferably, the push block is provided with a slope surface, and the slide block is provided with an inclined surface attached to the slope surface.

The gear train is including the first gear of cover locating first driving motor pivot, the second gear that links to each other with the side screw thread core, first gear and second gear meshing, first gear links to each other with the keyway through the key with first driving motor pivot and constitutes axial slidable, the rotatory cooperation of circumference linkage.

The fixed die holder is provided with a second driving motor, an internal thread core penetrates through the fixed die plate, and the second driving motor is in transmission connection with the internal thread core through a transmission mechanism.

The transmission mechanism comprises a main gear, a slave gear shaft, a first bevel gear, a second bevel gear and a transmission rotating shaft, wherein the main gear is connected with a rotating shaft of a second driving motor, the slave gear is connected with the slave gear shaft and meshed with the main gear, the first bevel gear is sleeved on the slave gear shaft and meshed with the second bevel gear, the second bevel gear is sleeved on the transmission rotating shaft, and the transmission rotating shaft is connected with the internal thread core.

Preferably, the transmission rotating shaft is provided with a positioning pin, and the second bevel gear drives the transmission rotating shaft to rotate through the positioning pin.

Furthermore, the transmission rotating shaft is provided with a limiting sliding groove, and the positioning pin is arranged in the limiting sliding groove.

Preferably, a fixed die base plate is arranged between the fixed die holder and the fixed die plate, and the transmission mechanism is arranged in the fixed die base plate.

Further, a buffer spring is arranged between the fixed die base plate and the fixed die plate.

The utility model has the beneficial effects that: the movable die comprises a movable die gear set, a movable die base, a side thread core, a sliding block, a pushing block and a pressing block, wherein the movable die gear set is sleeved outside the movable die gear set, the pushing block is arranged on the movable die base and forms an inclined pushing fit with the sliding block, the pushing block is pushed downwards during die assembly, the stroke of pushing the side thread core into a die cavity is fixed, the side thread core is prevented from being screwed too long or not screwed in place, the yield is improved, the side thread core is driven to rotate through the gear set, the sliding block is withdrawn by the rotation withdrawing force of threads, core pulling is realized, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a moving mold according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a movable mold according to an embodiment of the present invention.

Fig. 4 is a partially enlarged view of fig. 3.

FIG. 5 is a schematic structural diagram of a gear set according to an embodiment of the present invention.

Fig. 6 is a partially enlarged view of fig. 5.

FIG. 7 is a cross-sectional view of a stationary mold according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a transmission mechanism according to an embodiment of the utility model.

Fig. 9 is a partially enlarged view of a transmission shaft according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in the figure, the die with the threaded core-pulling mechanism comprises a fixed die and a movable die;

the movable mould includes the movable mould seat 1 be equipped with movable mould board 5 on the movable mould seat 1, movable mould board 5 is equipped with movable mould benevolence 4, first driving motor 6 passes through gear train 12 and is connected with the transmission of side screw thread core 13, gear train 12 is including the first gear 121 of cover locating first driving motor 6 pivot, the second gear 122 that links to each other with side screw thread core 13, first gear 121 and the meshing of second gear 122, be equipped with key 123 in the first driving motor 6 pivot, first gear 121 is equipped with and constitutes spacing complex keyway 124 with key 123, and first gear 121 and first driving motor 6 pivot are passed through key 123 and are linked to each other the realization axial slidable of the two, the rotatory cooperation of circumference linkage. The gear set 12 is sleeved with a sliding block 21, the sliding block 21 can drive the gear set 12 to transversely slide so as to drive the side thread core 13 to transversely slide, and the movable die holder 1 is provided with a pushing block 2 which forms an inclined pushing fit with the sliding block 21. The oblique push fit means that the up-and-down movement of the push block 2 pushes the slide block 21 to transversely slide left and right, specifically, the push block 2 can be provided with an inclined surface, and the inclined surface pushes the slide block 21 to transversely slide; of course, the slide block 21 may be provided with an inclined surface, and the push block 2 pushes down the inclined surface of the push block 21 to make it slide transversely. In this embodiment, the push block 2 has a slope, and the slider 21 has an inclined surface attached to the slope, so that the push block 2 with such a structure has a larger thrust force and is more stable.

When the die is closed, the movable die holder 1 moves downwards to control the push block 2 to push downwards, when the push block 2 is pushed into the die cavity, the rotating shaft of the first driving motor 6 is limited in the guide sliding groove 3, the push block 2 compresses the slide block 21 to push the side thread core 13 into the movable die core 4, the stroke of pushing the side thread core 13 into the die cavity is fixed, the long thread or the non-thread in place is ensured not to be screwed in, after a product is formed, the push block 2 moves upwards, the first driving motor 6 rotates, and the slide block 21 is withdrawn by utilizing the thread rotation withdrawing force of the side thread core 13.

In this embodiment, the push block 2 is provided with a guiding sliding groove 3, an elastic member 22 is disposed between the movable mold core 4 and the sliding block 21, the elastic member 22 provides an elastic restoring force for the sliding block 21, and a spring, an elastic pad, or the like may be used. After the product is formed, under the combined action of the elastic force of the spring and the thread rotating withdrawing force of the side thread core 13, the sliding block 21 is withdrawn more quickly, and the production efficiency is improved.

The fixed die comprises a fixed die seat 10 and a fixed die plate 8, the fixed die plate 8 is provided with a fixed die core 7, the fixed die seat 10 is provided with a second driving motor 11, an internal thread core 19 penetrates through the fixed die plate 8, the second driving motor 11 is in transmission connection with the internal thread core 19 through a transmission mechanism, the transmission mechanism comprises a main gear 14, a secondary gear 15, a secondary gear shaft 16, a first bevel gear 17, a second bevel gear 18 and a transmission rotating shaft 20, the main gear 14 is connected with a rotating shaft of the second driving motor 11, the secondary gear 15 is connected with the secondary gear shaft 16 and meshed with the main gear 14, the first bevel gear 17 is sleeved on the secondary gear shaft 16 and meshed with the second bevel gear 18, the second bevel gear 18 is sleeved on the transmission rotating shaft 20, and the transmission rotating shaft 20 is connected with the internal thread core 19. After a product is formed, the second driving motor 11 drives the main gear 14 to rotate, and the main gear 14 drives the secondary gear 15 and the secondary gear shaft 16 to rotate, so that the first bevel gear 17 on the secondary gear shaft 16 is driven to rotate, the second bevel gear 18 is driven to rotate in the opposite direction, the internal thread core 19 is driven to rotate in the opposite direction to be separated from the product, the internal thread core 19 does not need to be taken out of a die by a tool clamp after the die is opened, demoulding in the non-through hole internal thread die is achieved, and production efficiency is improved.

In this embodiment, the transmission rotating shaft 20 is provided with a limiting sliding groove 26 and a positioning pin 25, the positioning pin 25 is arranged in the limiting sliding groove 26, the second helical gear 19 drives the transmission rotating shaft 20 to rotate through the positioning pin 25, the structure has a stroke control function, and the length of the limiting sliding groove 26 is the stroke control amount of the second helical gear 19.

In this embodiment, a fixed die base plate 9 is arranged between the fixed die holder 10 and the fixed die plate 8, and the transmission mechanism is arranged in the fixed die base plate 9. A buffer spring 27 is arranged between the fixed die base plate 9 and the fixed die plate 8, and the fixed die base plate 9 prevents the transmission mechanism from being exposed outside, so that the stable operation of the transmission mechanism is ensured.

The examples should not be construed as limiting the utility model, and any non-inventive modifications made based on the spirit of the utility model should be construed as being within the scope of the utility model.

Claims

1. A mould with a thread core-pulling mechanism is characterized in that: including cover half and movable mould, the cover half includes cover half seat (10), be equipped with fixed die plate (8) on cover half seat (10), fixed die plate (8) are equipped with cover half benevolence (7), the movable mould includes movable mould seat (1), be equipped with movable mould board (5) on movable mould seat (1), movable mould board (5) are equipped with movable mould benevolence (4), a driving motor (6) are connected with side screw thread core (13) transmission through gear train (12), gear train (12) overcoat is equipped with slider (21), slider (21) can drive side screw thread core (13) lateral slipping, be equipped with on movable mould seat (1) and constitute oblique push away complex ejector pad (2) with slider (21).

2. A mold having a threaded core-pulling mechanism according to claim 1, wherein: the push block (2) is provided with a guide chute (3).

3. A mold having a threaded core-pulling mechanism according to claim 1, wherein: an elastic piece (22) is arranged between the movable mould core (4) and the sliding block (21).

4. A mold having a threaded core-pulling mechanism according to claim 1, wherein: the push block (2) is provided with a slope surface, and the slide block (21) is provided with an inclined surface attached to the slope surface.

5. A mold having a threaded core-pulling mechanism according to claim 1, wherein: gear train (12) are including overlapping first gear (121) of locating first driving motor (6) pivot, second gear (122) continuous with side screw thread core (13), first gear (121) and second gear (122) meshing, first gear (121) are equipped with keyway (124), first driving motor (6) pivot is equipped with key (123), first gear (121) link to each other with keyway (124) through key (123) with first driving motor (6) pivot and constitute axial slidable, circumference linkage normal running fit.

6. A mold having a threaded core-pulling mechanism according to claim 1, wherein: the fixed die holder (10) is provided with a second driving motor (11), an internal thread core (19) penetrates through the fixed die plate (8), and the second driving motor (11) is in transmission connection with the internal thread core (19) through a transmission mechanism.

7. A mold having a threaded core-pulling mechanism according to claim 6, wherein: the transmission mechanism comprises a main gear (14), a slave gear (15), a slave gear shaft (16), a first bevel gear (17), a second bevel gear (18) and a transmission rotating shaft (20), wherein the main gear (14) is connected with a rotating shaft of a second driving motor (11), the slave gear (15) is connected with the slave gear shaft (16) and meshed with the main gear (14), the first bevel gear (17) is sleeved on the slave gear shaft (16) and meshed with the second bevel gear (18), the second bevel gear (18) is sleeved on the transmission rotating shaft (20), and the transmission rotating shaft (20) is connected with an internal thread core (19).

8. A mold having a threaded core-pulling mechanism according to claim 7, wherein: the transmission rotating shaft (20) is provided with a positioning pin (25), and the second bevel gear (18) drives the transmission rotating shaft (20) to rotate through the positioning pin (25).

9. A mold having a threaded core-pulling mechanism according to claim 8, wherein: the transmission rotating shaft (20) is provided with a limiting sliding groove (26), and the positioning pin (25) is arranged in the limiting sliding groove (26).

10. A mold having a threaded core-pulling mechanism according to claim 6, wherein: be equipped with between cover half base (10) and fixed die plate (8) cover half backing plate (9), drive mechanism locates in the cover half backing plate (9), be equipped with buffer spring (27) between cover half backing plate (9) and fixed die plate (8).