CN210308853U - Injection mould - Google Patents

Abstract

The utility model discloses an injection mold, injection mold includes driving piece, fixed die plate, runner cover, first wearing parts and driving medium, the fixed die plate runs through and is equipped with the hole of stepping down, the runner cover stretches into step down the hole and with the fixed die plate rotates to be connected, first wearing parts is fixed in fixed die plate, driving medium, with a wearing parts sliding connection, and with the fixed die plate interval sets up, the driving medium is connected respectively the runner cover with the driving piece, the driving piece drive the driving medium slides, with the drive the runner cover rotates. The utility model discloses technical scheme can improve production efficiency.

Description

Injection mould

Technical Field

The utility model relates to the technical field of mold, in particular to injection mold.

Background

In injection molding, a water gap is a solidified material connecting a nozzle and a cavity of an injection molding machine, when a product is injected and ejected, the water gap is usually connected to the product, and the water gap needs to be removed by a processing method to obtain a complete finished product. For example, the water gap is usually removed by a manual or milling machine, which results in a complicated processing procedure and low production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing an injection mold aims at improving production efficiency.

In order to achieve the above object, the utility model provides an injection mold, include:

a drive member;

the fixed template is provided with a yielding hole in a penetrating way;

the sprue bush extends into the abdicating hole and is rotationally connected with the fixed die plate;

the first wear-resistant part is fixed on the fixed die plate; and

the transmission part is connected with the sprue bush and the driving part respectively, and the driving part drives the transmission part to slide so as to drive the sprue bush to rotate.

Optionally, the transmission member is located on a side of the first wear member facing away from the fixed die plate.

Optionally, the injection mold further comprises a second wear-resistant part fixed on the fixed mold plate, the transmission part is provided with a first side wall and a second side wall which extend along the sliding direction of the transmission part and are arranged oppositely, the first side wall is close to the sprue bush, and the second wear-resistant part is attached to the second side wall.

Optionally, a first accommodating groove is formed in the fixed die plate, the transmission part, the first wear-resistant part and the second wear-resistant part are mounted in the first accommodating groove, the first wear-resistant part is located at the groove bottom of the first accommodating groove, and the second wear-resistant part is located on the groove side wall of the first accommodating groove.

Optionally, injection mold still include with the cover half bedplate that the fixed die plate range upon range of setting, the driving medium is located the fixed die plate with between the cover half bedplate, the orientation of cover half bedplate the surface of fixed die plate is equipped with the third wearing parts, the driving medium with third wearing parts sliding connection, just the driving medium with the cover half bedplate interval sets up.

Optionally, be equipped with the spacing groove on the driving medium, the spacing groove is followed the slip direction of driving medium extends, the third wearing parts is equipped with spacing lug, spacing lug stretches into the spacing groove, and can follow the length direction slip of spacing groove.

Optionally, the transmission member includes a rack and a gear engaged with the rack, the rack is fixed on the driving member, the gear is fixed on the gate sleeve, and the rack is slidably connected to the first wear-resistant member.

Optionally, the inner surface of the sprue bush is provided with a rotation stopping groove.

Optionally, the injection mold further comprises a position sensor, the position sensor is arranged on the fixed mold plate, and the transmission member can move towards a direction close to or far away from the position sensor.

Optionally, a second accommodating groove is formed in the fixed die plate, and the driving piece is arranged in the second accommodating groove.

The utility model discloses technical scheme is through setting up driving piece and driving medium on injection mold to gate cover and driving piece are connected respectively to the driving medium, make driving piece drive driving medium slide, and then drive the gate cover by the driving medium and rotate. After the completion of moulding plastics, drive the runner cover by driving piece and driving medium and rotate, and then drive the interior material rotation of congealing of runner cover, when congealing the material and rotate to certain angle, congeal the junction of material and product and be twisted off, realized that autosegregation congeals material and product in injection mold. Therefore, the process that the product needs to be transferred and the solidified material is cut off after demoulding can be reduced, the processing time can be reduced, and the production efficiency can be improved. In addition, when the sprue bush rotates, the end face of the sprue bush and the fracture face of the solidified material can rub against the fracture face of the product, so that irregular or redundant solidified material on the product can be scraped and milled, and the surface quality of the product can be improved. In addition, can understand, the driving medium can be fixed die plate motion relatively, if with driving medium direct and fixed die plate sliding connection, the friction between driving medium and the fixed die plate leads to fixed die plate wearing and tearing easily, has greatly reduced the fixed die plate life-span. And install first wearing parts on the fixed die plate to when with driving medium and first wearing parts sliding connection, make driving medium and fixed die plate interval set up, avoided driving medium and fixed die plate to rub each other and lead to the fixed die plate wearing and tearing, can improve the life-span of fixed die plate, and when first wearing parts wearing and tearing, only need change first wearing parts can, avoid changing the fixed die plate, can reduce cost. In addition, compare in the fixed die plate, because the size of first wear-resisting piece is less, so can adopt the higher material of hardness to make, can improve wear-resisting effect, also can reduce cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

FIG. 2 is a schematic view of the sprue bushing, drive member and position sensor of FIG. 1;

FIG. 3 is a schematic illustration of the construction of the sprue bushing, drive member, transmission member and position sensor of FIG. 1;

FIG. 4 is a schematic view of the construction of the sprue bushing of FIG. 2;

fig. 5 is a schematic structural view of the third wear part in fig. 2.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Fixed template	52	Rack bar
11	A first accommodation groove	53	Limiting groove
				12	Second accommodation groove	54	First side wall
20	Sprue bush	55	Second side wall
				21	Rotation stopping groove	60	First wear part
22	First end face	70	Second wear part
				30	Driving member	80	Third wear part
40	Position sensor	81	Spacing lug
				50	Transmission member	90	Bearing assembly
51	Gear wheel

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an injection mold.

In the embodiment of the present invention, please refer to fig. 1 and fig. 2, the injection mold includes:

a drive member 30;

a fixed die plate 10 through which a relief hole (not shown) is formed;

the sprue bush 20 extends into the abdicating hole and is rotationally connected with the fixed die plate 10;

a first wear-resistant member 60 fixed to the fixed die plate 10; and

and the transmission piece 50 is connected with the first wear-resistant piece 60 in a sliding manner and is arranged at a distance from the fixed die plate 10, the transmission piece 50 is respectively connected with the sprue bush 20 and the driving piece 30, and the driving piece 30 drives the transmission piece 50 to slide so as to drive the sprue bush 20 to rotate.

The driving member 30 may be an electric motor, a hydraulic motor, a cylinder, or the like. The drive member 50 may also be various, for example, in some embodiments, the drive member 50 includes a gear 51 and a rack 52, the rack 52 being secured to the drive member 30, and the gear 51 being secured to the sprue bushing 20. In other embodiments, the drive member 50 also includes a worm gear and a worm screw, the worm screw being secured to the drive member 30 and the worm gear being secured to the sprue bushing 20. In other embodiments, the transmission member 50 further comprises two gears 51 engaged with each other, wherein one gear 51 is fixed to the driving member 30 and the other gear 51 is fixed to the sprue bush 20. Or the transmission member 50 is a crank and rocker mechanism or the like.

The first wear member 60 may be block-shaped, cylindrical, L-shaped, or plate-shaped, among others. The first wear-resistant member 60 is fixed to the fixed die plate 10 by screws, but the first wear-resistant member 60 may be clamped, adhered or welded to the fixed die plate 10. The injection mould may comprise one or more first wear parts 60 or the like.

In some embodiments, the first wear-resistant member 60 protrudes from the surface of the fixed mold plate 10, and the transmission member 50 is slidably connected to the surface of the first wear-resistant member 60 facing away from the fixed mold plate 10. In other embodiments, the fixed mold plate 10 is provided with a groove, the first wear-resistant member 60 is provided in the groove, and the groove width of the groove is larger than the width of the transmission member 50 in the groove width direction. In other embodiments, a sliding groove or a sliding rail may be provided on the first wear member 60, the transmission member 50 is located in the sliding groove or the sliding rail and is slidably connected to the first wear member 60, and so on.

The utility model discloses technical scheme is through setting up driving piece 30 and driving medium 50 on injection mold to connect runner cover 20 and driving piece 30 respectively with driving medium 50, make driving piece 30 drive driving medium 50 slide, and then drive runner cover 20 by driving medium 50 and rotate. After the injection molding is finished, the driving piece 30 and the transmission piece 50 drive the sprue bush 20 to rotate, and further drive the congealing material in the sprue bush 20 to rotate, when the congealing material rotates to a certain angle, the junction of the congealing material and the product is twisted off, and the automatic separation of the congealing material and the product in the injection mold is realized. Therefore, the process that the product needs to be transferred and the solidified material is cut off after demoulding can be reduced, the processing time can be reduced, and the production efficiency can be improved. In addition, when the sprue bush 20 rotates, the end face of the sprue bush 20 and the fracture surface of the solidified material can rub against the fracture surface of the product, so that irregular fracture or redundant solidified material on the product can be scraped and milled, and the surface quality of the product can be improved. In addition, it can be understood that the transmission member 50 can move relative to the fixed die plate 10, and if the transmission member 50 is directly connected with the fixed die plate 10 in a sliding manner, the friction between the transmission member 50 and the fixed die plate 10 easily causes the fixed die plate 10 to be worn, so that the service life of the fixed die plate 10 is greatly reduced. And install first wearing parts 60 on fixed die plate 10 to when with driving medium 50 and first wearing parts 60 sliding connection, make driving medium 50 and fixed die plate 10 interval set up, avoided driving medium 50 and fixed die plate 10 looks mutual friction and lead to fixed die plate 10 wearing and tearing, can improve the life-span of fixed die plate 10, and when first wearing parts 60 worn and torn, only need change first wearing parts 60 can, avoid changing fixed die plate 10, can reduce cost. In addition, compared with the fixed die plate 10, the first wear-resistant part 60 is smaller in size, so that the first wear-resistant part can be made of a material with higher hardness, the wear-resistant effect can be improved, and the cost can be reduced.

In this embodiment, the transmission member 50 is located on a side of the first wear-resistant member 60 facing away from the fixed die plate 10. Specifically, the transmission member 50 is located on a surface of the first wear-resistant member 60 facing away from the fixed die plate 10, and is slidably connected to the first wear-resistant member 60. Therefore, only the surface of the first wear-resistant part 60, which is far away from the fixed die plate 10, needs to be machined to be smooth, the structure of the first wear-resistant part 60 is simple, the process of machining the smooth plane is simple, and the cost can be reduced.

In this embodiment, referring to fig. 2 and fig. 3, the injection mold further includes a second wear-resistant member 70 fixed on the fixed mold plate 10, the transmission member 50 has a first side wall 54 and a second side wall 55 extending along the sliding direction thereof and disposed opposite to each other, the first side wall 54 is close to the sprue bush 20, and the second wear-resistant member 70 is attached to the second side wall 55. Specifically, the transmission member 50 is slidably connected to the second wear-resistant member 70 by the second side wall 55 abutting against the second wear-resistant member 70. It will be appreciated that the second wear part 70 limits the movement of the transmission member 50 away from the first side wall 54, preventing the transmission member 50 from disengaging from the sprue bush 20 during movement, and thus ensuring the coupling and driving effect of the transmission member 50 with the sprue bush 20.

In this embodiment, referring to fig. 1 and fig. 2 again, the fixed mold plate 10 is provided with a first accommodating groove 11, the transmission member 50, the first wear-resistant member 60 and the second wear-resistant member 70 are all installed in the first accommodating groove 11, the first wear-resistant member 60 is located at the bottom of the first accommodating groove 11, and the second wear-resistant member 70 is located at the side wall of the first accommodating groove 11. Specifically, the injection mold further includes a fixed mold base plate (not shown) stacked on the fixed mold plate 10, and the first receiving groove 11 is provided in a surface of the fixed mold plate 10 facing the fixed mold base plate. The first wear-resistant member 60 protrudes from the bottom of the first accommodating groove 11, and the second wear-resistant member 70 protrudes from the side wall of the first accommodating groove 11 and is slidably connected to the transmission member 50. It can be understood that, when the transmission member 50 is placed in the first accommodating groove 11, the fixed mold base plate covers the transmission member 50 in the first accommodating groove 11, so that the foreign matters such as external dust can be prevented from being adhered to the transmission member 50 to influence the sliding and abrasion of the transmission member 50, and the sliding effect and the service life of the transmission member 50 can be improved.

In this embodiment, the injection mold includes a plurality of first wear-resistant members 60, and the plurality of first wear-resistant members 60 are arranged at intervals along the sliding direction of the transmission member 50. Particularly, injection mold includes two first wearing parts 60, and two first wearing parts 60 are arranged along the slip direction interval of driving medium 50, so reduced the area of contact of driving medium 50 with first wearing part 60, reduced frictional force, can improve the slip effect of driving medium 50 on first wearing part 60, can also reduce the wearing and tearing between driving medium 50 and the first wearing part 60 in addition, improve life. Of course, in other embodiments, the injection mold also comprises three first wear parts 60 or four first wear parts 60, etc. Similarly, in some embodiments, the injection mold may also include a plurality of second wear-resistant components 70, which are not described in detail herein.

In this embodiment, referring to fig. 2 and fig. 3, the transmission member 50 is located between the fixed mold plate 10 and the fixed mold base plate, the surface of the fixed mold base plate facing the fixed mold plate 10 is provided with a third wear-resistant member 80, the transmission member 50 is slidably connected to the third wear-resistant member 80, and the transmission member 50 is spaced from the fixed mold base plate. It can be understood that, because the driving medium 50 is located between the fixed die plate 10 and the fixed die base plate, so the driving medium 50 also can rub with the fixed die base plate when moving, lead to the fixed die base plate wearing and tearing easily, and set up third wearing parts 80 on the fixed die base plate to make driving medium 50 and third wearing parts 80 sliding connection, can avoid the fixed die base plate directly to contact with driving medium 50 and the wearing and tearing of rubbing each other, can improve the life of fixed die base plate. In addition, when setting up first wearing parts 60 on the fixed die plate 10 and set up third wearing parts 80 on the fixed die plate, driving medium 50 is located between first wearing parts 60 and the third wearing parts 80, so can restrict the direction of arranging motion of driving medium 50 along fixed die plate 10 and fixed die plate, can improve the motion effect of driving medium 50. Wherein the third wear-resistant part 80 can be block-shaped, column-shaped or sheet-shaped, etc. In some embodiments, the third wear member 80 is disposed to protrude from a surface of the stationary mold base plate, and the transmission member 50 is slidably coupled to a surface of the third wear member 80 facing away from the stationary mold base plate. In other embodiments, the stationary mold base plate is provided with a recess, the third wear member 80 is provided in the recess, and the width of the recess is greater than the width of the transmission member 50 in the direction of the width of the recess. In other embodiments, a sliding groove may be provided in the third wear member 80, the transmission member 50 may be located in the sliding groove to slidably couple with the third wear member 80, and so on.

In this embodiment, be equipped with spacing groove 53 on the driving medium 50, spacing groove 53 extends along the sliding direction of driving medium 50, and third wearing parts 80 is equipped with spacing lug 81, and spacing lug 81 stretches into spacing groove 53 to can slide along the length direction of spacing groove 53. Specifically, the limiting protrusion 81 is disposed on a surface of the third wear-resistant member 80 facing the transmission member 50, and a size of the limiting protrusion 81 is smaller than a size of the limiting groove 53. When the driving member 30 drives the driving member 50 to move, the limiting protrusion 81 is fixed, the limiting groove 53 moves relative to the limiting protrusion 81, and when the driving member 50 moves to the groove wall of one end of the limiting protrusion 81 and the limiting groove 53 to abut against, the limiting protrusion 81 can limit the driving member 50 to continue moving, the stroke of the driving member 50 can be controlled, and the driving member 50 is prevented from being continuously abutted against other components to damage the driving member 50.

In this embodiment, the transmission member 50 includes a rack 52 and a gear 51 engaged with the rack 52, the rack 52 is fixed on the driving member 30, the gear 51 is fixed on the sprue bush 20, and the rack 52 is slidably connected with the first wear-resistant member 60. Specifically, when only the first wear member 60 is provided, the rack 52 is slidably connected to the first wear member 60. When the first wear member 60 and the third wear member 80 are provided, the transmission member 50 is located between the first wear member 60 and the third wear member 80 and slidably connected to the first wear member 60 and the third wear member 80, respectively. It can be understood that the gear 51 and the rack 52 have large transmission power, work stably, can better drive the sprue bush 20 to rotate, and in addition, the gear 51 and the rack 52 have long service life, simple structure and can reduce the cost. Wherein, the gear 51 and the sprue bush 20 can be welded; or the gear 51 is sleeved on the peripheral surface of the sprue bush 20 and fixed through a flat key or a pin; or the gear 51 is provided integrally with the sprue bush 20, etc. In an embodiment, the side of the rack 52 facing away from the gear 51 is further provided with a first wear-resistant member 60, so that the rack 52 can be limited from moving in a direction away from the gear 51, and a good meshing effect between the rack 52 and the gear 51 can be ensured.

In this embodiment, referring to fig. 4, the inner surface of the sprue bush 20 is provided with a rotation stopping groove 21. Specifically, the sprue bush 20 has a first end surface 22 facing the cavity of the injection mold, the whirl-stop groove 21 extends in the axial direction of the sprue bush 20, and the whirl-stop groove 21 is located at an end of the sprue bush 20 close to the first end surface 22. It can be understood, when the internal surface of runner cover 20 was equipped with only groove 21, can correspond on the congealing material and only groove 21 forms only the muscle that changes, only muscle protrusion in the outer peripheral face of congealing the material, and only the muscle that changes is located only groove 21 and can restrict congeal the relative runner cover 20 of material and rotate, and set up only groove 21 and still increased the area of contact of congealing material and runner cover 20, can be better when runner cover 20 rotates the card is held congeals the material and is made congeal the material and rotate, and then improve the fixed effect and the rotation effect of congealing the material. In addition, in one embodiment, the rotation stopping groove 21 penetrates the first end surface 22. When the rotation stopping groove 21 penetrates through the first end surface 22, the rotation stopping rib can be guaranteed to be separated from the sprue bush 20 from the notch of the rotation stopping groove 21 on the first end surface 22, and solidified materials can be conveniently taken out of the sprue bush 20.

In addition, in one embodiment, the rotation stopping groove 21 is elongated in the axial direction of the sprue bush 20. It will be appreciated that if the size of the rotation stopping groove 21 is set to be excessively large, the size of the runner in the sprue bush 20 is increased, which in turn causes more raw material to remain in the runner to form a solidified material, resulting in a waste of resources and an increase in cost. In addition, the increase of the size of the runner can also cause the pressure of the injection into the cavity of the injection mold to be reduced, the speed of filling the cavity of the injection mold to be reduced, and product defects are easily caused. When the rotation stopping groove 21 is arranged to be long, the groove wall of the rotation stopping groove 21 and the side wall of the rotation stopping rib are abutted with each other along the rotation direction of the sprue bush 20, so that the fixing effect of the solidified material and the sprue bush 20 can be improved, the driving force for driving the solidified material by the sprue bush 20 is also increased, and the defect of product forming caused by overlarge size of a flow channel can be avoided. In addition, when the rotation stopping groove 21 is long, the structure is simple, the processing is convenient, and the cost can be reduced. In addition, the groove depth of the whirl-stop groove 21 in the radial direction of the sprue bush 20 may be the same in the length direction of the whirl-stop groove 21, or the groove depth of the whirl-stop groove 21 may be gradually reduced in a direction away from the first end surface 22, or the groove bottom of the whirl-stop groove 21 may be parallel to the axis of the sprue bush 20, or the like.

Of course, in other embodiments, the anti-rotation groove 21 may be formed in the first end surface 22 and extend radially of the sprue bush 20 to penetrate the inner surface of the sprue bush 20; or the inner surface of the sprue bush 20 is provided with the whirl-stop grooves 21 so that the section of the sprue bush 20 perpendicular to the axis thereof is polygonal or elliptical, etc.

In this embodiment, the inner surface of the sprue bush 20 is provided with a plurality of rotation stopping grooves 21, and the plurality of rotation stopping grooves 21 are arranged at intervals in the circumferential direction of the sprue bush 20. The plurality of anti-rotation grooves 21 are evenly spaced along the circumferential direction of the sprue bush 20. It can be understood that the contact area of congealing material and runner cover 20 can further be increased to set up a plurality of groove 21 that splines for runner cover 20 along the rotation direction with congeal the butt area increase of material, and then congeal the material atress more even when making the runner cover 20 drive congeal the material and rotate, reduce the rib that splines and congeal the cracked risk of material, improved the runner cover 20 drive and congeal material pivoted effect. Wherein two, three, four, five or six anti-rotation slots 21, etc. may be provided.

In this embodiment, referring to fig. 1 and fig. 2 again, the injection mold further includes a position sensor 40, the position sensor 40 is disposed on the fixed mold plate 10, and the transmission member 50 can move toward or away from the position sensor 40. Specifically, the injection mold further includes a control device (not shown), the control device is electrically connected to the position sensor 40 and the driving member 30, respectively, the position sensor 40 is used for limiting a movement stroke or a rotation angle of the transmission member 50, the position sensor 40 is used for detecting a position of the transmission member 50 and converting the position into a trigger signal, after the transmission member 50 moves towards the position sensor 40 and generates the trigger signal, the position sensor 40 transmits the trigger signal to the control device, and the control device changes a movement state of the transmission member 50. For example, in one embodiment, the transmission member 50 includes a gear 51 and a rack 52, the rack 52 can move toward or away from the position sensor 40, and after the rack 52 moves toward the position sensor 40 and triggers the position sensor 40 to generate a trigger signal, the control device controls the driving member 30 to change the movement state, so that the rack 52 can move away from the position sensor 40. So can realize automatic control driving medium 50's effect, improve production automation, and then can improve production efficiency. The position sensor 40 may be various, for example, the position sensor 40 may be an infrared sensor, a hall sensor, an angular displacement sensor, a travel switch, or the like.

In this embodiment, the position sensor 40 is a travel switch, and the transmission member 50 can move to abut against the travel switch. Specifically, the transmission member 50 moves toward the proximity of the travel switch until it abuts against the contact of the travel switch, thereby generating the trigger signal. Compared with an infrared sensor and a Hall sensor, the travel switch has the advantages that the travel switch is reliable in action and can be adapted to the working environment of the injection mold, the travel switch is simple in structure and low in price, and the cost of the injection mold can be reduced. The travel switch can be a direct-acting travel switch, a roller-type travel switch, a micro-motion travel switch or a combined travel switch, and the like.

In this embodiment, the fixed mold plate 10 is provided with a second receiving groove 12, and the driving member 30 is disposed in the second receiving groove 12. The driving member 30 may be completely disposed in the second receiving groove 12, or a part of the driving member 30 may be disposed in the receiving groove. It can be understood that the second receiving groove 12 is disposed on the surface of the fixed mold plate 10 facing the fixed mold plate, and when the driving member 30 is disposed in the second receiving groove 12, the driving member 30 can be prevented or reduced from being damaged by external collision, so as to better protect the driving member 30. In addition, compared with the mode of directly fixing the driving member 30 on the outer side surface of the fixed die plate 10, the size of the injection die in the width direction can be reduced, so that the injection die has a more compact structure and occupies less space. Of course, in other embodiments, the second receiving groove 12 may be disposed on the side of the fixed mold plate 10, or a receiving groove may be disposed on both the fixed mold plate 10 and the fixed mold base plate. In one embodiment, the first receiving cavity 11 is communicated with the second receiving cavity 12.

In this embodiment, the sprue bush 20 is provided with a bearing 90, an inner ring of the bearing 90 is fixed to the sprue bush 20, and an outer ring of the bearing 90 is fixed to the fixed die plate 10. This improves the turning effect of the sprue bush 20. And the friction between the sprue bush 20 and the fixed die plate 10 can be reduced, so that the abrasion between the sprue bush 20 and the fixed die plate 10 is reduced, and the service life is prolonged. In another embodiment, two bearings 90 are disposed on the sprue bush 20, and the two bearings 90 are disposed on two opposite sides of the gear 51, so that the stress on the sprue bush 20 is more uniform, and the stability of the sprue bush 20 during rotation can be improved.

In this embodiment, the injection mold further includes a movable mold (not shown) and a material pulling rod (not shown) provided on the movable mold, and the material pulling rod extends into the sprue bush 20. Specifically, a clamping part is arranged at one end of the pulling rod, which faces the sprue bush 20, the clamping part is in a rotating body shape, a rotating shaft of the clamping part is collinear with an axis of the pulling rod, and the clamping part extends into the sprue bush in a die assembly state, so that the solidified materials in the sprue bush 20 wrap the clamping part. After the completion of moulding plastics, drive runner cover 20 rotates, congeals the relative card of material and holds the portion and follow runner cover 20 circumferential direction, draws the material pole to remove along the direction that the movable mould was kept away from fixed die plate 10 during the die sinking, and then can pull out congealing the material, can realize automaticly reduce cost.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. An injection mold, comprising:

a drive member;

the fixed template is provided with a yielding hole in a penetrating way;

the sprue bush extends into the abdicating hole and is rotationally connected with the fixed die plate;

the first wear-resistant part is fixed on the fixed die plate; and

the transmission part is connected with the sprue bush and the driving part respectively, and the driving part drives the transmission part to slide so as to drive the sprue bush to rotate.

2. An injection mould according to claim 1, wherein the transmission member is located on a side of the first wear member facing away from the stationary platen.

3. An injection mold according to claim 2, further comprising a second wear member secured to the stationary platen, the transmission member having first and second oppositely disposed side walls extending in the sliding direction thereof, the first side wall being adjacent the sprue bushing, the second wear member being in abutment with the second side wall.

4. The injection mold of claim 3, wherein the fixed mold plate is provided with a first receiving groove, the transmission member, the first wear-resistant member and the second wear-resistant member are all mounted in the first receiving groove, the first wear-resistant member is located at the bottom of the first receiving groove, and the second wear-resistant member is located at the side wall of the first receiving groove.

5. An injection mold according to any one of claims 1 to 4, further comprising a fixed mold base plate disposed in a stacked relationship with the fixed mold plate, wherein the transmission member is disposed between the fixed mold plate and the fixed mold base plate, a surface of the fixed mold base plate facing the fixed mold plate is provided with a third wear-resistant member, the transmission member is slidably connected to the third wear-resistant member, and the transmission member is disposed in a spaced relationship with the fixed mold base plate.

6. An injection mold according to claim 5, wherein the transmission member is provided with a limiting groove extending in a sliding direction of the transmission member, and the third wear-resistant member is provided with a limiting projection extending into the limiting groove and capable of sliding in a length direction of the limiting groove.

7. An injection mold according to claim 1, wherein said transmission member comprises a rack and a pinion engaged with said rack, said rack being fixed to said driving member, said pinion being fixed to said sprue bushing, said rack being slidably connected to said first wear member.

8. The injection mold of claim 1, wherein the inner surface of the sprue bushing is provided with a detent groove.

9. An injection mold according to claim 1, further comprising a position sensor provided on the stationary platen, wherein the transmission member is movable in a direction toward or away from the position sensor.

10. The injection mold of claim 1, wherein the fixed mold plate is provided with a second receiving groove, and the driving member is disposed in the second receiving groove.

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