CN213564046U

CN213564046U - Injection molding product demoulding mechanism

Info

Publication number: CN213564046U
Application number: CN202021980951.7U
Authority: CN
Inventors: 李亚
Original assignee: Wuhu Shunwei Intelligent Technology Co ltd
Current assignee: Wuhu Shunwei Intelligent Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-06-29
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses an injection moulding product demoulding mechanism relates to the processing field, its characterized in that: including cover half, movable mould and shedder, 4 racks of fixedly connected with on the cover half, movable mould and cover half sliding connection, be equipped with 4 preformed holes on the movable mould, 4 shedder of fixedly connected with on the movable mould. Utilize shedder to carry out the drawing of patterns to screw hole department, power derives from the lateral shifting of die sinking, need not additionally to add power component, the cost is lower, the die sinking removes and makes the rotatory transmission shaft that drives of power shaft rotatory, the transmission shaft adopts the spline to drive the screw thread post rotatory, make the screw thread post break away from the product or stretch into in the preformed hole when die sinking and compound die, thereby realize synchronous, during the die sinking of movable mould sideslip, the liftout piece stretches into the liftout inslot, with the ejecting automatic drawing of patterns of injection moulding product, need not the manual work and pull out it down, the drawing of patterns is convenient.

Description

Injection molding product demoulding mechanism

Technical Field

The utility model relates to a processing field, concretely relates to injection moulding product demoulding mechanism.

Background

After the injection molding of plastics is accomplished, need carry out the drawing of patterns process, to the drawing of patterns of general box-packed structure, generally adopt ejecting with the mode of artifical taking to carry out the drawing of patterns, but be equipped with the screw hole in some box-packed injection molding insides, when this kind of product drawing of patterns, need first the die sinking, then carry out the drawing of patterns of screw hole department, the die sinking is difficult synchronous with the drawing of patterns, and the drawing of patterns process needs to increase extra power component and rotates the drawing of patterns, and the cost is higher, and the drawing of patterns is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an injection moulding product demoulding mechanism to solve the problem of mentioning in the above-mentioned background art.

A demoulding mechanism for injection molding products comprises a fixed mould, a movable mould and demoulding devices, wherein 4 racks are fixedly connected to the fixed mould, the movable mould is connected with the fixed mould in a sliding manner, 4 preformed holes are formed in the movable mould, and 4 demoulding devices are fixedly connected to the movable mould;

shedder includes screw thread post, transmission shaft and power shaft, power shaft and transmission shaft all rotate with the fixed block and are connected, fixedly connected with straight-teeth gear and drive bevel gear respectively at the both ends of power shaft, straight-teeth gear and rack toothing, the right-hand member fixedly connected with of transmission shaft and drive bevel gear meshing's driven bevel gear, and its left part is equipped with the spline that one section corresponds with the spline spout in the screw thread post, screw thread post both ends all are equipped with one section screw thread, still be equipped with sealed fender ring on the screw thread post, screw thread post and fixed block threaded connection, the output shaft fixed connection of movable mould and pneumatic cylinder.

Preferably, the fixed die is fixedly connected with the left rack, and the hydraulic cylinder is fixedly connected with the right rack.

Preferably, 4 sliding rods are arranged between the left rack and the right rack, and the movable mold is connected with the fixed mold in a sliding mode through the sliding rods.

Preferably, the movable mold is provided with 2 ejection grooves, the ejection grooves are communicated with the injection molding inner cavity, and the right rack is fixedly connected with 2 ejection pieces corresponding to the ejection grooves.

Preferably, the transmission shaft is rotatably connected with the fixed block through a bearing embedded in the fixed block, and two sections of threads on the threaded column have the same rotating direction.

The utility model has the advantages of, utilize shedder to carry out the drawing of patterns to screw hole department, power derives from the lateral shifting of die sinking, need not additionally to add power component, and the cost is lower. The die sinking removes and makes the rotatory transmission shaft that drives of power shaft rotatory, and the transmission shaft adopts the spline to drive the screw thread post rotatory for the screw thread post can break away from the product or stretch into in the preformed hole when die sinking and compound die, thereby realizes synchronous, and during the movable mould sideslip die sinking, the ejecting piece stretches into the ejecting inslot, with the ejecting automatic drawing of patterns of injection moulding product, need not the manual work and pulls out it down, the drawing of patterns is convenient.

Drawings

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

Fig. 2 is a partial sectional view at the demolding device.

Fig. 3 is a schematic structural view of the demolding device.

Fig. 4 is a schematic structural view of a threaded post.

Fig. 5 is a schematic structural view of the transmission shaft.

FIG. 6 is a schematic structural diagram of the movable mold.

In the figure: 1-fixed die, 2-movable die, 22-ejection slot, 3-demoulding device, 31-threaded column, 311-spline chute, seal retaining ring, 32-transmission shaft, 321-spline, 33-power shaft, 34-straight gear, 35-driving bevel gear, 36-driven bevel gear, 37-fixed block, 38-bearing, 4-rack, 5-hydraulic cylinder, 6-left frame, 7-right frame, 8-ejection piece and 9-sliding rod.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

A demoulding mechanism for injection products comprises a fixed mould 1, a movable mould 2 and demoulding devices 3, wherein 4 racks 4 are fixedly connected to the fixed mould 1, the movable mould 2 is in sliding connection with the

fixed mould

1, 4 reserved holes 21 are formed in the

movable mould

2, and 4 demoulding devices 3 are fixedly connected to the movable mould 2;

demoulding device 3 includes screw thread post 31, transmission shaft 32 and power shaft 33, power shaft 33 and transmission shaft 32 all rotate with fixed block 37 and are connected, the both ends difference fixedly connected with straight-tooth gear 34 and the drive bevel gear 35 of power shaft 33, straight-tooth gear 34 and the meshing of rack 4, the right-hand member fixedly connected with of transmission shaft 32 and the driven bevel gear 36 of drive bevel gear 35 meshing, and its left part is equipped with one section spline 321 that corresponds with the interior spline spout 311 of screw thread post 31, screw thread post 31 both ends all are equipped with one section screw thread, still be equipped with sealed fender ring 312 on the screw thread post 31, screw thread post 31 and fixed block 37 threaded connection, the output shaft fixed connection of movable mould 2 and pneumatic cylinder 5. The mold opening movement enables the power shaft 333 to rotate to drive the transmission shaft 32 to rotate, the transmission shaft 32 drives the threaded column 31 to rotate by adopting the spline 321, and the threaded column 31 can be separated from a product or extend into a reserved hole while mold opening and mold closing are carried out, so that synchronization is achieved.

In this embodiment, the fixed mold 1 is fixedly connected with a left frame 6, and the hydraulic cylinder 5 is fixedly connected with a right frame 7.

In this embodiment, 4 sliding rods 9 are arranged between the left frame 6 and the right frame 7, and the movable mold 2 is slidably connected with the fixed mold 1 through the sliding rods 9. The slide rod 9 improves the sliding stability and reduces the die assembly error.

In this embodiment, the movable mold 2 is provided with 2 ejection grooves 22, the ejection grooves 22 are communicated with the injection molding inner cavity, and the right frame 7 is fixedly connected with 2 ejection members 8 corresponding to the ejection grooves 22. When the movable mold 2 moves transversely and opens the mold, the ejector 8 extends into the ejector groove 22 to eject the injection molding product out for automatic demolding without manually pulling the injection molding product out, and demolding is convenient.

In the embodiment, the transmission shaft 32 is rotatably connected with the fixed block 37 through a bearing 38 embedded in the fixed block 37, and two sections of threads on the threaded column 31 are screwed in the same direction. The screwing directions are the same, and the threaded columns are enabled to be screwed in and out simultaneously in the injection molding product and the fixing piece.

The working process and the principle thereof are as follows:

after the injection molding of the injection molding product is finished, a piston rod of the hydraulic cylinder 5 contracts, the movable mold 2 moves rightwards along the slide rod 9 and keeps the rack 4 fixed on the fixed mold 1 immovable, at the moment, the straight gear 34 on the power shaft 33 rotates clockwise and moves rightwards in the process of being meshed with the rack 4, the power shaft 33 rotates and is meshed with the driven bevel gear 36 through the driving bevel gear 35 to drive the transmission shaft 32 to rotate anticlockwise, the spline 321 on the transmission shaft 32 is matched with the spline chute 311 in the threaded column 31 to drive the threaded column 31 to rotate anticlockwise, the thread at the right end of the threaded column 31 is matched with the internal thread of the fixed block 37, when the threaded stud 31 is rotated counterclockwise, since the splines 321 do not affect the axial movement, it is equivalent to unscrewing the screw, therefore, the threaded post 31 can move to the right smoothly, and the portion of the threaded post 31 with the left end located in the threaded hole of the injection molding part can also gradually rotate and separate from the injection molding product.

When the movable mold 2 moves, the ejector 8 extends into the ejector groove 22 and contacts with the edge of the box body product, the injection molding product is ejected out gradually and falls down, and then the injection molding product is taken out by workers.

When the die is closed, the movable die 2 moves to the left, the threaded column 31 is screwed into the preformed hole 21, the sealing baffle ring 312 blocks the rest part of the preformed hole 21, and the injection molding machine performs injection molding to manufacture the next product.

Based on the above: the demoulding device 3 is used for demoulding the threaded hole, power is derived from transverse movement of mould opening, no additional power element is needed, and the cost is low. The die sinking removes and makes the rotatory transmission shaft 32 that drives of power shaft 33 rotatory, and transmission shaft 32 adopts spline 321 to drive screw thread post 31 rotatory for screw thread post 31 can break away from the product or stretch into in the preformed hole 21 when die sinking and compound die, thereby realizes synchronous, and when the movable mould 2 sideslip die sinking, ejection piece 8 stretches into ejection groove 22 in, with the ejecting automatic drawing of patterns of injection moulding product, need not the manual work and pulls out it, the drawing of patterns is convenient.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides an injection moulding product demoulding mechanism which characterized in that: the novel gear shifting die comprises a fixed die (1), a movable die (2) and demoulding devices (3), wherein 4 racks (4) are fixedly connected to the fixed die (1), the movable die (2) is in sliding connection with the fixed die (1), 4 preformed holes (21) are formed in the movable die (2), and 4 demoulding devices (3) are fixedly connected to the movable die (2);

the demoulding device (3) comprises a threaded column (31), a transmission shaft (32) and a power shaft (33), the power shaft (33) and the transmission shaft (32) are rotationally connected with the fixed block (37), two ends of the power shaft (33) are respectively and fixedly connected with a straight gear (34) and a driving bevel gear (35), the straight gear (34) is meshed with the rack (4), the right end of the transmission shaft (32) is fixedly connected with a driven bevel gear (36) meshed with the driving bevel gear (35), and the left part of the screw is provided with a section of spline (321) corresponding to the spline chute (311) in the screw column (31), two ends of the threaded column (31) are respectively provided with a section of thread, the threaded column (31) is also provided with a sealing baffle ring (312), the threaded column (31) is in threaded connection with the fixed block (37), and the movable die (2) is fixedly connected with an output shaft of the hydraulic cylinder (5).

2. An injection molded product ejector mechanism according to claim 1, wherein: the fixed die (1) is fixedly connected with the left rack (6), and the hydraulic cylinder (5) is fixedly connected with the right rack (7).

3. An injection molded product ejector mechanism according to claim 2, wherein: 4 slide bars (9) of fixedly connected with between left side frame (6) and right side frame (7), movable mould (2) pass through slide bar (9) and cover half (1) sliding connection.

4. An injection molded product ejector mechanism according to claim 2, wherein: the injection molding machine is characterized in that 2 ejection grooves (22) are formed in the movable mold (2), the ejection grooves (22) are communicated with an injection molding inner cavity, and 2 ejection pieces (8) corresponding to the ejection grooves (22) are fixedly connected to the right rack (7).

5. An injection molded product ejector mechanism according to claim 1, wherein: the transmission shaft (32) is rotatably connected with the fixed block (37) through a bearing (38) embedded in the fixed block (37), and the two sections of threads on the threaded column (31) have the same rotating direction.