CN211616463U - Injection mold of pivot plastic part - Google Patents

Abstract

The utility model discloses an injection mold of a rotating shaft plastic part, which comprises a main body part and a rotating shaft part, wherein the injection mold comprises an upper mold and a lower mold which are matched with each other, the upper mold comprises an upper mold core, and the upper mold core comprises an upper mold product glue position; the bed die includes lower mould benevolence, the lower mould benevolence includes the lower mould product and glues the position, it is provided with the runner to go up the mould top, still including setting up the outer position module on this bed die, with the time delay subassembly of the interior position subassembly of this outer position module linkage and be used for guaranteeing interior position subassembly operating time when the die sinking, this bed die sets up outer position shovel machine and dials the round pin subassembly, should dial the round pin subassembly and be driven by this outer position shovel machine and link this interior position subassembly and to this pivot portion drawing of patterns in advance, this outer position module is used for accomplishing the drawing of patterns of this pivot plastic part. The utility model discloses an injection mold can realize the one shot structure shaping of pivot plastic part, need not the drawing of patterns of smooth and high accuracy that machining can guarantee pivot plastic part through the secondary drawing of patterns.

Description

Injection mold of pivot plastic part

Technical Field

The utility model relates to an industrial machinery equipment technical field, in particular to injection mold of pivot plastic part.

Background

The injection mold is an important process equipment for producing various industrial products, and with the rapid development of the plastic industry and the application of plastic products in various fields, the application range of the injection mold is more and more extensive.

An injection mold is a tool for producing plastic products and also a tool for imparting a structure and precise dimensions to the plastic products. Injection molding is a common processing method for mass production of parts with complex shapes, and refers to injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and obtaining a molded product after cooling and solidification.

Injection mold also uses in the robot field of making, to plastic part robot yaw pivot plastic part product, this pivot plastic part structure is structure abnormal shape plastic part, is provided with long section of thick bamboo semicircle enclosure structure in the middle of it usually, and both sides set up circular hole site in this enclosure structure.

When the traditional injection mold is used for molding the rotating shaft plastic part at one time, the circular hole positions of the rotating shafts at two ends of the plastic part can be finished only by secondary processing. Meanwhile, the formed product is easy to deform due to the structure specificity, and the product precision of the rotating shaft plastic part cannot be met due to more burrs after the product is demoulded.

Therefore, the existing injection molding technology for the special-shaped plastic parts is still to be improved.

Disclosure of Invention

The utility model mainly aims at providing a smooth and pivot plastic part's of drawing of patterns of high accuracy injection mold of pivot plastic part.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: providing an injection mold of a rotating shaft plastic part, wherein the rotating shaft plastic part comprises a main body part and a rotating shaft part, the injection mold comprises an upper mold and a lower mold which are matched with each other, the upper mold comprises an upper mold core, and the upper mold core comprises an upper mold product glue position; the bed die includes lower mould benevolence, the lower mould benevolence includes that the lower mould product glues the position, it is provided with the runner to go up the mould top, this pivot plastic part injection moulding glues the position and the cavity that the position surrounds is glued to the lower mould product in this last mould product, still including setting up the outer position module on this bed die, with the interior position module of this outer position module linkage and be used for guaranteeing the time delay subassembly of interior position module operating time when the die sinking, this last mould sets up outer position shovel machine and dials the round pin subassembly, during the die sinking, should dial the round pin subassembly and drive and link this interior position module by this outer position shovel machine and demould this pivot portion in advance, this outer position module is used for accomplishing the drawing of patterns of this pivot plastic part main part.

In an embodiment, the outer-position module includes an outer-position seat and an outer-position insert, the outer-position insert has the same contour as the main body, the outer-position insert is disposed on a side of the outer-position seat close to the rotating shaft plastic part, and the outer-position shovel is driven by a first core-pulling cylinder and disposed on the upper mold for mold locking.

For the stroke of automated inspection outer line position, this outer line position seat sets up outer line position stroke detection subassembly in the position department that stretches out mould and bed die, this outer line position stroke detection subassembly includes backup pad, outer line position hydro-cylinder, position sensing spare, first inductive switch and second inductive switch, this outer line position hydro-cylinder of installation in this backup pad, the output of this outer line position hydro-cylinder passes through the push rod and acts on this bed die, the outer line position stroke of interval for setting for of this first inductive switch and second inductive switch, this position sensing spare includes body and touch-control end, this body is fixed on this outer line position seat, this touch-control end is located between this first inductive switch and the second inductive switch.

When the demolding machine is specifically implemented, the inner-row position assembly comprises an inner-row position insert and an inner-row position shoveling machine, the inner-row position insert is the same as the outline of the rotating shaft portion, the inner-row position shoveling machine is supported on the outer-row position seat in a sliding mode, and the inner-row position shoveling machine is driven by the pin shifting assembly to complete the pre-demolding of the rotating shaft portion.

The time delay assembly comprises a plurality of time delay bolts, and the plurality of time delay bolts penetrate through the outer slide seat and are inserted into time delay slots arranged on the upper die.

For smooth demoulding, the lower mould comprises a base and a plurality of ejector plates, an ejection mechanism is arranged between the ejector plates and the lower mould, the ejection mechanism comprises at least one upper ejector block, a plurality of product ejector pins are arranged at the top of the upper ejector block, the product ejector pins are supported on the ejector plates through connecting rods, ejector pin ejector rods are arranged on the ejector plates, and the ejector rods are connected with the ejector rods of the injection mould to perform ejection action.

The inner slide block guide rail, the first shovel groove and the first slide block are arranged on the inner slide block, and the outer slide block guide rail, the second shovel groove and the second slide block are arranged on the outer slide block.

The injection mold of the rotating shaft plastic part further comprises a controller, the controller is connected with a driving valve for driving the outer slide oil cylinder, the first core-pulling oil cylinder and the ejector pin oil cylinder, the controller is further connected with a first inductive switch and a second inductive switch, and the driving valve controls the action of the corresponding oil cylinder.

Wherein, the clearance precision of the matching surfaces of the outer slide seat and the delay bolt is 0.01 mm.

The utility model discloses embodiment's beneficial effect is: the injection mold of pivot plastic part of this embodiment, a plastic part for injection moulding robot yaw pivot product, but the circular hole site of this plastic part both sides need not secondary machine tooling one shot structure shaping, through setting up outer position module, interior position module and time delay subassembly, this mould sets up the group round pin subassembly, during the die sinking, this group round pin subassembly is driven by this mould and is linked this interior position module and drawing of patterns in advance to the pivot portion of pivot plastic part, this outer position module is used for drawing of patterns to this pivot plastic part wholly. The injection mold of this embodiment can once only structural molding, once moulds plastics the die sinking action and realizes secondary structure demolding, can guarantee the precision of pivot plastic part, and linkage nature is good between module and the subassembly, improves the product quality of moulding plastics when can realizing the drawing of patterns fast.

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 view of an overall structure of a power supply frame of an injection mold for a plastic part of a rotating shaft according to the present embodiment;

FIG. 2 is a schematic diagram illustrating a position structure of a label film and a label sensor of an injection mold for a plastic part of a rotating shaft according to the present embodiment;

FIG. 3 is a schematic structural diagram of a label winding device of an injection mold for plastic parts of a rotating shaft according to the present embodiment;

FIG. 4 is a schematic structural diagram of a control portion of an injection mold for a plastic part of a rotating shaft according to the present embodiment; and

fig. 5 is a circuit diagram of a controller of an injection mold for a plastic part with a rotating shaft according to the present embodiment.

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 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.

Referring to fig. 1 and 2, the present invention relates to an injection mold for plastic parts with rotating shafts.

As shown in fig. 3, the injection mold is used for injection molding the plastic part 4 of the head-swinging rotating shaft of the robot, the plastic part includes a main body 41 and a rotating shaft 42, and two sides of the rotating shaft 42 are respectively provided with a circular hole 46.

Generally speaking, the injection mold comprises an upper mold and a lower mold which are matched with each other, wherein the upper mold comprises an upper mold core, and the upper mold core comprises an upper mold product glue position; the lower mould includes lower mould benevolence, and the lower mould benevolence includes that the lower mould product glues the position, and the mould top is provided with the runner, and this pivot plastic part injection moulding glues in the cavity that position and lower mould product glue the position and surround at this last mould product. The injection mold further comprises an outer slide module arranged on the lower mold, an inner slide module linked with the outer slide module, and a delay module used for guaranteeing the working time of the inner slide module when the mold is opened, the upper mold is provided with a shifting pin module 54, the shifting pin module 54 is driven by the upper mold and linked with the inner slide module to perform pre-demolding on the rotating shaft part when the mold is opened, and the outer slide module is used for completing the integral demolding of the rotating shaft plastic part.

The injection mold of pivot plastic part of this embodiment through setting up outer position module, interior position module and time delay subassembly, should go up the mould and set up and dial round pin subassembly 54, and during the die sinking, should dial round pin subassembly 54 and drive and link this interior position module and demold in advance the pivot portion of pivot plastic part by this last mould, and this outer position module is used for drawing of patterns to this pivot plastic part wholly. The injection mold of the embodiment can be formed in a one-step structure, and the secondary structure is demoulded through one-step injection mold opening action.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As shown in fig. 1 to 5, the present embodiment relates to an injection mold for a plastic part of a rotating shaft.

Referring to fig. 3, the injection mold is used for injection molding of the plastic part 4 of the robot head-swinging rotating shaft, the plastic part is a shape-specific product and includes a main body 41 and a rotating shaft 42, the rotating shaft 42 is formed at one end of the main body, a cavity 45 is formed at the center of the rotating shaft 42, and an outer slide insert 58 and an inner slide insert 56 are accommodated in the cavity 45 during injection molding. Two sides of the rotating shaft 42 are respectively provided with a circular hole 46. The semicircular inner wall of the rotating shaft portion 42 needs to satisfy the requirement of smoothness.

The injection mold of the rotating shaft plastic part comprises an upper mold and a lower mold which are matched with each other.

The upper die comprises a panel 1, a nozzle plate 2 and an upper die plate 3 from top to bottom in sequence.

The lower die sequentially comprises a base 9, an ejector plate 8 and a lower die plate 6 from bottom to top. The upper template 3 and the lower template 6 are provided with a mold core 4. The ejector plate 8 includes a first ejector plate 81 and a second ejector plate 82.

An upper mold core 41 is installed in the upper mold plate 3, and the upper mold core 41 includes an upper mold product glue site. A lower mold core 42 is arranged in the lower mold plate 6, and the lower mold core 42 comprises a lower mold product glue position. The top of the panel 1, the nozzle plate 2 and the upper template 3 of the upper die is provided with a pouring gate 12, and the rotating shaft plastic part 4 is injection molded in a cavity surrounded by the glue position of the upper die product and the glue position of the lower die product.

Referring to fig. 5, the injection mold for the plastic part of the hinge further includes an outer slide module 7, an inner slide module and a delay module disposed on the lower mold. The inner slide module is mounted on the outer slide module 7 and is linked therewith. The time delay assembly is used for ensuring the working time duration of the pre-demoulding of the inner row assembly when the mould is opened. The upper die is provided with an outer slide shovel 55 and a deadbolt assembly 54. When the injection molding of the product is completed and the mold is opened, the pin pulling assembly 54 is driven by the outer slide shovel 55 of the upper mold and is linked with the inner slide assembly to perform the pre-demolding of the rotating shaft, and the outer slide stroke detection assembly is mounted on the outer slide module 7 and is used for completing the demolding of the whole rotating shaft plastic part.

The outer slide module 7 includes an outer slide seat 53 and an outer slide insert 58, the outer slide insert 58 has the same contour as the main body, the outer slide insert 58 is disposed on the outer slide seat 53 near the rotating shaft plastic part 4, and the outer slide shovel 55 is driven by a first core-pulling cylinder and disposed on the upper mold for mold locking.

In order to automatically detect the stroke of the outer slide, the outer slide base 53 is provided with an outer slide stroke detecting unit at a position extending beyond the upper mold and the lower mold.

The outward travel position and stroke detecting assembly includes a support plate 70, an outward travel position cylinder 72, a position sensing member 75, a first sensing switch 73, and a second sensing switch 74.

The outer travel cylinder 72 is mounted on the support plate 70, and the output of the outer travel cylinder 72 acts on the lower die via a push rod. The distance between the first inductive switch 73 and the second inductive switch 74 is set as the outer travel distance of the outer travel seat 53. The position sensor 75 includes a body fixed on the outer traveling seat 53 and a touch end located between the first sensor switch 73 and the second sensor switch 74.

The inboard position assembly includes an inboard position insert 56 and an inboard position shovel 57. The inner slide insert 56 has the same contour as the spindle, and the inner slide shovel 57 is slidably supported on the outer slide seat 53 and driven by a pin-pulling assembly to complete the pre-demolding of the spindle.

In this embodiment, the inner slide shoveling machine 57 includes a first slider rail 571, a first shovel groove, and a first slider. The outer reach shovel 55 includes a second slider guide rail, a second shovel slot, and a second slider.

This first slider guide rail and first slider, the cooperation inclination of this second slider guide rail and second slider need very accurate to guarantee the smooth and easy work of shovel machine.

In this embodiment, after the mold opening is completed, the equal-slide shovel 55 needs to unlock and extend out of the mold, and then the outer slide cylinder 72 is started to work to draw out the outer slide seat 53, so that the molded plastic part 4 of the rotating shaft is separated from the outer slide insert 58. The dovetail groove matching degree of the inner slide insert 56 and the inner slide shovel 57 needs to be precisely controlled to 0.01 and needs to be smooth. The materials of the inner slide insert 56 and the inner slide shovel 57 need to be quenched and hardened to reach the wear-resistant standard so as to ensure smooth die opening. The glue level surface of the inner slide insert 56 and the top of the inner slide shovel 57 needs to have a fall, and the glue level surface of the inner slide shovel 57 needs to be 0.02 mm high to avoid shoveling glue threads when the inner slide insert 56 moves transversely. The surfaces of the first and second slides need to meet smoothness requirements.

When the injection molding is finished, the external position oil cylinder 72 is firstly kept still, and the external position oil cylinder 72 is started to move to finish the moving and integral demolding after the upper mold and the surface mold and the delay bolt are completely opened. If the outer traveling cylinder 72 is inadvertently started first, a die crash accident may occur.

The delay assembly includes a plurality of delay pins 51, and the plurality of delay pins 51 penetrate through the outer slide seat 53 and are inserted into the delay slots 32 of the upper mold. Wherein, the precision of the clearance between the matching surfaces of the outer slide seat 53 and the delay bolt 51 is 0.01 mm.

Referring to fig. 2 and 4, in addition, in order to realize smooth demolding, the first ejector plate 81 and the second ejector plate 82 are stacked on the base of the lower mold. An ejection mechanism is provided between the first ejector plate 81 and the second ejector plate 82 and the lower die plate 6.

The ejection mechanism includes at least one upper ejector pin block, such as a first ejector pin block 86 and a second ejector pin block 87. A plurality of product ejector pins 88 are disposed at the top of each upper ejector block. The product ejector pins 88 are supported on the first ejector plate 81 by a link 85. In this embodiment, the bottom of the base is provided with an ejector pin rod (not shown), and an output shaft of the ejector pin rod is connected to the first ejector plate 81 and the second ejector plate 82. This product mold insert 88 is that the line cutting processing is torn open the convenient artifical polishing of piece, solves because the bone position is dark to lead to difficult processing, avoids difficult drawing of patterns phenomenon.

The injection mold of the rotating shaft plastic part further comprises a controller, the controller is connected with a driving valve of the movable outer slide cylinder 72, the first core-pulling cylinder and the ejector pin cylinder, the controller is further connected with a first inductive switch 73 and a second inductive switch 74, and the driving valve controls the action of the corresponding cylinder.

The technical process is introduced as follows:

after the injection molding machine completes the injection molding of the rotating shaft plastic part 4, when the upper mold and the lower mold are pulled open and opened, the poking pin is pulled by the opened upper mold, the time delay pin is started to drive the inner slide shoveling machine 57 to move, and drive the inner slide insert 56 thereon to move transversely in the direction a, as shown in fig. 3, so that the inner slide insert 56 is separated from the rotating shaft part 42 of the rotating shaft plastic part 4, i.e. the circular hole position of the rotating shaft part. During the first pre-demolding movement, the delay bolt 51 is used for delaying, and the outward-moving insert 58 and the outward-moving seat 53 are kept not to move, so that sufficient time is provided for the first demolding. After the upper die and the lower die are completely separated, the outer slide oil cylinder 72 is started to drive the whole outer slide module 7 to move to a set position, and then the secondary final demoulding action of the rotating shaft plastic part 4 can be completed. In the second demolding process, the position sensing member 75 is combined with the first sensing switch 73 and the second sensing switch 74 to sense whether the outer slide module 7 exits to the set position, and when the second sensing switch is triggered, the second demolding of the slide is completed.

In the first pre-demolding process, in the separation process of the upper mold and the lower mold, the outer slide shovel 55 is unlocked under the action of the first core pulling cylinder, the outer slide shovel 55 drives the inner slide shovel 57 through the pin shifting component 54, the delay bolt 51 synchronously moves to delay, the outer slide shovel 55 drives the pin shifting component, the pin shifting component 54 drives the inner slide shovel 57 to slide in the first slider guide rail, so that the inner slide insert 56 moves along the direction a to be separated from the circular hole position of the rotating shaft portion 42 of the rotating shaft plastic part 4, and the first step mold releasing action is completed.

In the second demoulding process, after the mould opening strokes of the upper mould and the lower mould reach 271 mm, the second step of action is carried out to start the external position-moving oil cylinder 72 to enable the external position-moving module 7 to move along the B direction, when the external position-moving module 7 moves to pass through the position of the second induction switch, the whole external position-moving module 7 is completely drawn out of the injection mould, the mould finishes the second demoulding action, and then the rotating shaft plastic part 4 is pushed out through a product thimble arranged on the thimble plate to finish the demoulding of the whole product.

The injection mold of pivot plastic part of this embodiment, a plastic part for injection moulding robot yaw pivot product, but the hole site of this plastic part both sides need not secondary machine tooling one shot structure shaping, through setting up outer position module 7, interior position module and time delay subassembly, this last mould sets up dials the round pin subassembly, during the die sinking, this group round pin subassembly is driven by this last mould and is linked this interior position module and demold in advance the pivot portion 42 of pivot plastic part 4, this outer position module 7 is used for wholly carrying out the drawing of patterns to this pivot plastic part 4. The injection mold of this embodiment can once only structural molding, once moulds plastics the die sinking action and realizes secondary structure demolding, can guarantee pivot plastic part 4's precision, and linkage nature is good between module and the subassembly, improves the product quality of moulding plastics when can realizing the drawing of patterns fast.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive under, utilize the equivalent structure transform that the content was done in the description and the attached drawing, or direct/interval application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. An injection mold for a rotating shaft plastic part comprises a main body part and a rotating shaft part, wherein the injection mold comprises an upper mold and a lower mold which are matched with each other, the upper mold comprises an upper mold core, and the upper mold core comprises an upper mold product glue position; the bed die includes lower mould benevolence, and the lower mould benevolence includes that the lower mould product glues the position, goes up the mould top and is provided with the runner, pivot plastic part injection moulding is in go up in the mould product glues the position and the lower mould product glues the cavity that the position surrounds, its characterized in that still including setting up outer position module on the bed die, with the time delay subassembly of the interior position subassembly operating time is guaranteed in the interior position subassembly of going of outer position module linkage and being used for when the die sinking, it sets up outer position shovel machine and dials the round pin subassembly to go up the mould, during the die sinking, dial the round pin subassembly by outer position shovel machine drives and links interior position subassembly is right pivot portion drawing of patterns in advance, outer position module is used for accomplishing the drawing of patterns of pivot spare main part.

2. The injection mold for plastic parts with rotating shafts according to claim 1, wherein the outer slide module comprises an outer slide seat and an outer slide insert, the outer slide insert has the same contour as the main body, the outer slide insert is disposed on one side of the outer slide seat close to the plastic parts with rotating shafts, and the outer slide shovel is driven by a first core-pulling cylinder and disposed on the upper mold for mold locking.

3. The injection mold for plastic parts with rotating shafts according to claim 2, wherein the outer slide seat is provided with an outer slide stroke detection assembly at a position extending out of the upper mold and the lower mold, and the outer slide stroke detection assembly comprises a support plate, an outer slide cylinder, a position sensing member, a first sensing switch and a second sensing switch.

4. The injection mold for plastic parts with rotating shafts according to claim 3, wherein the outer slide cylinder is installed on the support plate, the output of the outer slide cylinder acts on the lower mold through a push rod, the distance between the first inductive switch and the second inductive switch is a set outer slide stroke, the position sensing part comprises a body and a touch end, the body is fixed on the outer slide seat, and the touch end is located between the first inductive switch and the second inductive switch.

5. The injection mold for plastic parts with rotating shafts according to claim 2, wherein the inner slide assembly comprises an inner slide insert and an inner slide shovel, the inner slide insert has the same profile as the rotating shaft, and the inner slide shovel is slidably supported on the outer slide seat and driven by a pin shifting assembly to complete the pre-demolding of the rotating shaft.

6. The injection mold for plastic parts with rotating shafts according to claim 2, wherein the delay assembly comprises a plurality of delay pins, and the plurality of delay pins penetrate through the outer slide seat and are inserted into the delay slots of the upper mold.

7. The injection mold for plastic parts with rotating shafts according to claim 1, wherein the lower mold comprises a base and a plurality of ejector plates, an ejection mechanism is arranged between the ejector plates and the lower mold, the ejection mechanism comprises at least one upper ejector block, a plurality of product ejector pins are arranged on the top of the upper ejector block, the product ejector pins are supported on the ejector plates through connecting rods, and ejector pins are arranged on the ejector plates.

8. The injection mold for plastic parts with rotating shafts according to claim 2 or 4, wherein the inner slide shoveling machine comprises a first slide block guide rail, a first shovel groove and a first slide block, and the outer slide shoveling machine comprises a second slide block guide rail, a second shovel groove and a second slide block.

9. The injection mold for the rotating shaft plastic part according to any one of claims 1 to 7, further comprising a controller, wherein the controller is connected with driving valves of the outer driving position oil cylinder, the first core pulling oil cylinder and the ejector pin oil cylinder, the controller is further connected with a first inductive switch and a second inductive switch, and the driving valves are used for controlling the corresponding oil cylinders to move.

10. The injection mold for plastic parts with rotating shafts according to claim 6, wherein the clearance precision of the matching surfaces of the outer slide seat and the delay bolt is 0.01 mm.

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