CN217858793U

CN217858793U - Powder metallurgy injection molding die for stainless steel arc-shaped wire hoop

Info

Publication number: CN217858793U
Application number: CN202221419032.1U
Authority: CN
Inventors: 周浪; 缪龙
Original assignee: Suzhou Yu'anjun Precision Technology Co ltd
Current assignee: Suzhou Yu'anjun Precision Technology Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-11-22
Anticipated expiration: 2032-06-09

Abstract

The utility model provides a powder metallurgy injection moulding mould of stainless steel arc wire hoop, including the cover half subassembly, with the relative movable mould subassembly that sets up of cover half subassembly, set up the subassembly of loosing core and set up the direction subassembly between cover half subassembly and movable mould subassembly on the movable mould subassembly. A molding cavity is formed among the arc-shaped sliding block, the cylindrical sliding block and the movable mold core which are arranged in the movable mold assembly, when glue is injected into the molding cavity from the pouring gate, the core pulling piece drives the connecting rod and the arc-shaped sliding block to perform core pulling, and therefore the metal piece is injection molded. The mold has a simple structure, and the mold processing process flow can be simplified. The arc-shaped sliding blocks are integrally arranged, so that the precision of a molding cavity is ensured more accurately, and the sliding block combination movement is smoother. In addition, the layout between the arc-shaped sliding block and the molding cavity is more compact, so that the overall size of the mold is reduced.

Description

Powder metallurgy injection molding die of stainless steel arc-shaped wire hoop

Technical Field

The utility model relates to a powder metallurgy injection molding mould of stainless steel arc wire hoop belongs to the forming die of a metalwork.

Background

The die for injection molding of finished parts by metal powder is widely applied to industrial production, and the arc-shaped wire hoop needs more elaborate and complex structural arrangement when the die is designed due to the arc-shaped structure. The lateral sliding block mechanism of the traditional die is complex, so that the processing process flow of the die is also complex. In addition, because the precision of the product cavity is influenced by the tolerance of the combination and matching of the multiple sliding blocks, the precision of the cavity cannot be guaranteed finally due to the combination of the sliding blocks, the requirement of a design drawing cannot be met by a final product, and the qualified rate of the product is reduced. And the fluency of too many sliders of the device can also be influenced, the space of the die is also larger, and the actual installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a powder metallurgy injection moulding mould of stainless steel arc wire hoop to make in the mould die cavity compacter meticulous, the technology is simplified, easily processing, the slider motion is smooth in the same direction as and practice thrift the space.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a powder metallurgy injection molding die of a stainless steel arc-shaped wire hoop comprises:

the fixed die assembly comprises a fixed die base plate and a fixed die plate fixedly connected with the fixed die base plate, wherein a positioning ring penetrating through the fixed die base plate is arranged at the center of the fixed die base plate, a pouring gate corresponding to the positioning ring and a fixed die groove portion recessed from one side of the fixed die plate to the inside of the fixed die plate are arranged on the fixed die plate, the fixed die assembly further comprises a fixed die core accommodated in the fixed die groove portion and a fixed die core positioned in the fixed die core, and the fixed die core is fixed on the fixed die plate;

the movable mould component comprises a movable mould base plate, cushion blocks vertically arranged on two sides of the movable mould base plate correspondingly, and a movable mould plate fixedly connected with the movable mould base plate and the cushion blocks, wherein two cushion blocks, the movable mould base plate and the movable mould plate are jointly enclosed to form an accommodating space, the movable mould plate is arranged from one side of the movable mould plate to the movable mould groove part sunken in the movable mould plate, the movable mould component also comprises an ejection unit accommodated in the accommodating space, a movable mould core accommodated in the movable mould groove part and a movable mould core positioned in the movable mould core, a circular arc groove part matched with the fixed mould core, a first straight groove part and a second straight groove part are formed in the movable mould core and are arranged at the opening sides of two ends of the circular arc groove part, a cylindrical sliding block is arranged in the first straight groove part and is connected with an inclined guide pillar positioned on the movable mould core, the inclined guide pillar drives the cylindrical sliding block to slide in the first straight groove part, the movable mould core comprises a sliding rail positioned in the circular arc groove part and an arc sliding block positioned in the center of the sliding rail, and a forming cavity is formed between the circular arc sliding block and the movable mould core;

the core pulling assembly comprises a core pulling piece arranged on the side surface of the movable mould plate, a connecting rod correspondingly connected with the core pulling piece and a shovel base inclined plane movably hinged with the connecting rod through a connecting piece, the connecting rod and the shovel base inclined plane are arranged in the second straight groove part, and the shovel base inclined plane is in embedded fit connection with the arc-shaped sliding block;

the guide assembly comprises a guide pillar fixed on the fixed die base plate and a guide sleeve sleeved on the guide pillar.

Furthermore, the top end of the cylindrical sliding block is provided with a positioning column, and the positioning column is in butt joint with the hole site of the arc-shaped sliding block.

Furthermore, the slide rail is fixed on the movable mould core and can limit the sliding direction of the arc-shaped slide block.

Furthermore, a flow guide pipe is arranged below the pouring gate and connected with the forming cavity.

Furthermore, at least one material grabbing needle is arranged on the fixed die base plate.

Further, the ejection unit comprises an ejector pin push plate close to the movable mould base plate, a push plate fixing plate fixedly connected with the ejector pin push plate and an ejector pin penetrating through the push plate fixing plate and arranged towards the fixed mould component.

Further, ejecting unit still includes the reset unit, the reset unit includes the release link and overlaps and establish spring on the release link.

Furthermore, the movable die assembly also comprises a supporting rod which is fixed on the movable die base plate and is used for supporting the movable die plate.

Furthermore, the core pulling element is an oil cylinder, and the core pulling assembly is provided with two sets in a matching way.

Further, the mould still includes fixed subassembly, fixed subassembly includes the fixed strip, the both ends of fixed strip are equipped with the fixed orifices, and screw or bolt will through two the fixed orifices the fixed strip is fixed simultaneously on the fixed die plate with the movable mould board.

The beneficial effects of the utility model reside in that: a molding cavity is formed among the arc-shaped sliding block, the cylindrical sliding block and the movable die core, when glue is injected into the molding cavity from a pouring gate, the core pulling piece drives the connecting rod and the arc-shaped sliding block to pull the core, and therefore the metal piece is molded in an injection mode. The cylindrical convex block, the arc-shaped sliding block, the shovel-base inclined plane block and the connecting rod of the die are simple in structure, so that the processing technological process of the die can be simplified. The utility model discloses an arc-shaped slider adopts integrative setting, compares with the form of the slider combination among the prior art, has reduced many in quantity, and the precision of shaping die cavity has been guaranteed to more accurate, makes off-the-shelf precision not influenced by the fit tolerance of slider combination, and the slider combination motion is more smooth. In addition, the layout between the arc-shaped sliding block and the molding cavity is more compact, so that the overall size of the mold is reduced.

The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description will be given of preferred embodiments of the present invention in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a diagram of a finished product manufactured by a powder metallurgy injection molding die of a stainless steel arc-shaped wire hoop according to an embodiment of the present invention;

fig. 2 is a structural diagram of a powder metallurgy injection molding die for a stainless steel arc wire hoop according to an embodiment of the present invention;

FIG. 3 is a block diagram of a stationary mold assembly of the powder metallurgy injection molding die for the stainless steel arcuate wire clamp shown in FIG. 2;

FIG. 4 is a schematic view of the movable die assembly of the powder metallurgy injection molding die for the stainless steel arcuate wire clamp shown in FIG. 2;

fig. 5 is a structural view of a cylindrical boss of a powder metallurgy injection molding die of the stainless steel arc wire ferrule shown in fig. 2.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the present application, where the contrary is not intended, the use of directional terms such as "upper, lower, top, bottom" generally refer to the orientation as shown in the drawings, or to the component itself being oriented in a vertical, perpendicular, or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The utility model discloses a powder metallurgy injection moulding mould of stainless steel arc wire hoop, this mould are used for producing a stainless steel arc wire hoop, please refer to figure 1 finished product drawing, and this wire hoop 5 includes a convex cavity body 51 and is located the outer ring 52 of following of taking two symmetrical lugs of this body 51 one end.

As shown in fig. 2 to fig. 4, for the utility model discloses a powder metallurgy injection molding die of stainless steel arc wire hoop that preferred embodiment is shown, including cover half subassembly 1, the relative movable mould subassembly 2 that sets up with cover half subassembly 1, the subassembly of loosing core 3 and the direction subassembly 4 of setting between cover half subassembly 1 and movable mould subassembly 2 of setting on the movable mould subassembly. The fixed die assembly 1 is opposite to the movable die assembly 2 in position and is used for matching and forming the electric wire hoop 5, and the guide assembly 4 is used for guiding the relative position of the movable die assembly 2 and the fixed die assembly 1, so that the deviation is not generated to ensure the quality of the electric wire hoop 5.

The fixed mold assembly 1 comprises a fixed mold base plate 11 and a fixed mold plate 12 fixedly connected with the fixed mold base plate 11, a positioning ring 13 penetrating through the fixed mold base plate 11 is arranged at the center of the fixed mold base plate 11, and a pouring gate (not shown) corresponding to the positioning ring and a fixed mold groove part (not numbered) recessed from one side of the fixed mold plate to the inside of the fixed mold plate are arranged on the fixed mold plate 12. The positioning ring 13 corresponds to a gun platform on the injection molding machine in position and is used for guiding the gun platform to enable the injection molding machine to accurately inject the rubber material into the mold, and the pouring gate is used for guiding the injection molding rubber material to enter the mold. The fixed die assembly 1 further comprises a fixed die core 14 accommodated in the groove portion of the fixed die and a fixed die core (not numbered) positioned in the fixed die core 14, and the fixed die core 14 is fixed to the fixed die plate 12. The fixed die base plate 11 is further provided with at least one material grabbing needle (not shown) for grabbing the finished product of the electric wire hoop 5.

The movable mold component 2 comprises a movable mold base plate 21, cushion blocks 23 vertically arranged on two sides of the movable mold base plate 21 correspondingly, and a movable mold plate 22 fixedly connected with the movable mold base plate 21 and the cushion blocks 23, wherein the two cushion blocks 23, the movable mold base plate 21 and the movable mold plate 22 are enclosed together to form an accommodating space, and a movable mold groove part (not numbered) recessed towards the inside of the movable mold plate 22 is further arranged on the movable mold plate 22. The movable mold assembly 2 further comprises two support rods (211) accommodated in the accommodating space and fixed on the movable mold base plate 21 for supporting the movable mold plate 22, wherein the support rods 211 are used for supporting the movable mold plate 22 and preventing the movable mold plate 22 from deforming. The movable mold component 2 further comprises an ejection unit 24 accommodated in the accommodating space, a movable mold core 25 accommodated in the movable mold groove portion, and a movable mold core located in the movable mold core 25, wherein an arc-shaped groove portion 26 matched with the fixed mold core 25, a first straight groove portion 281 and a second straight groove portion 282 arranged at two opening sides of the arc-shaped groove portion are formed in the movable mold core 25, a cylindrical sliding block 27 is arranged in the first straight groove portion 281, the cylindrical sliding block 27 is connected with an inclined guide pillar 251 located on the movable mold core 25, the inclined guide pillar 251 drives the cylindrical sliding block 27 to slide in the first straight groove portion 281, and the movable mold core comprises a slide rail 29 located in the arc-shaped groove portion 26 and an arc-shaped sliding block 20 located at the center of the slide rail. Wherein, the top end of the cylindrical slider 27 is provided with a positioning post 271 (please refer to fig. 5), and the positioning post 271 is butted with the hole site of the arc slider 20, so as to ensure that the inner hole of the finished product wire hoop 5 is not dislocated. The slide rail 29 is fixed to the movable mold core 25, and the slide rail 29 can limit the sliding direction of the arc-shaped slide block 20. A molding cavity is formed among the arc-shaped sliding block 20, the cylindrical sliding block 27 and the movable die core 25 and is used for injection molding of the wire clamp 5. A flow guide pipe (not shown) is arranged below the gate and connected with the molding cavity. The arc slider 20 in this embodiment is divided into two parts, i.e., a trapezoidal portion 201 and an arc portion 202, and the trapezoidal portion 201 and the arc portion 202 are integrally provided.

The core pulling assembly 3 includes a core pulling member 31 disposed on the side surface of the movable mold plate 22, a connecting rod 32 correspondingly connected to the core pulling member 31, and a shovel base inclined plane 33 movably hinged to the connecting rod 32 through a connecting member, the connecting rod 32 and the shovel base inclined plane 33 are disposed in the second straight groove portion 282, and the shovel base inclined plane 33 is in embedded fit connection with the arc-shaped slide block 20. The hinged connection mode of the connecting rod 32 and the shovel base inclined plane 33 provides a certain movable space, when glue is injected into the mold, the core pulling assembly 3 drives the arc-shaped slider 20 to rotate for core pulling, a certain pressure intensity is provided inside the molding cavity, and therefore the movable design is convenient for extruding air to balance the pressure intensity. In the embodiment, the core pulling member 31 is an oil cylinder, two sets of core pulling assemblies 3 are provided in a matching manner, and in other embodiments, multiple sets of core pulling assemblies can be provided according to actual cost and requirements, which is not limited herein.

The guiding component 4 comprises a guide post 41 fixed on the fixed die base plate 12 and a guide sleeve 42 sleeved on the guide post. The number of the guide columns 41 is 4, the guide columns are uniformly distributed at 4 corners of the fixed die base plate 11, and the guide columns are limited between the fixed die base plate 11 and the injection molding machine. One end of the guide post 41 is clamped in the fixed mold seat plate 11, and the other end can freely extend into the cushion block 23. The fixed die assembly 1 and the movable die assembly 2 are both provided with guide sleeves 42, and the guide sleeves 42 are correspondingly matched with the guide posts 41 and evenly distributed on 4 corners of the fixed die plate 12 and the movable die plate 22. When the mould is opened, the guide post 41 is separated from the guide sleeve 42 in the movable mould plate 22, the movable mould component 2 is far away from the fixed mould component 1, when the mould is closed, the guide post 41 penetrates the guide sleeve 42 in the movable mould plate 22, and the movable mould component 2 and the fixed mould component 1 form a cavity (not numbered) for molding the metal piece 5.

The ejector unit 24 includes an ejector blade 241 provided near the movable mold base plate 22, a blade fixing plate 242 fixedly connected to the ejector blade, and an ejector pin (not shown) provided to penetrate the blade fixing plate 242 and face the fixed mold assembly 1, and ejects the processed wire clamp 5. The ejecting unit further includes a reset unit, and the reset unit includes a reset rod (not shown) and a spring 243 sleeved on the reset rod. When the mold is opened and the ejector pin is pushed out, the product is taken out, the ejector unit is reset by the elastic force of the spring 243, and the mold is closed.

The mold further comprises a fixing assembly 6, the fixing assembly 6 comprises a fixing strip 61, fixing holes (not shown) are formed in two ends of the fixing strip 61, and screws 62 or bolts 62 fix the fixing strip 61 on the fixed mold plate 12 and the movable mold plate 22 through the two fixing holes, so that the relative positions of the fixed mold assembly 1 and the movable mold assembly 2 are guaranteed to be unchanged.

The working principle of the embodiment is as follows: a molding cavity is formed among the arc-shaped sliding block 20, the cylindrical sliding block 27 and the movable die core 25, when glue is injected into the molding cavity from a pouring gate, the connecting rod 32 and the arc-shaped sliding block 20 are driven by the oil cylinder 31 to loose cores, and the wire hoop 5 is molded in an injection mode. The injection molded wire hoop 5 is ejected out under the action of the ejection unit 24 and then taken out through the material grabbing needle.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A powder metallurgy injection molding die of stainless steel arc wire hoop, its characterized in that includes:

the movable mold assembly comprises a movable mold base plate, cushion blocks correspondingly and vertically arranged on two sides of the movable mold base plate, and a movable mold plate fixedly connected with the movable mold base plate and the cushion blocks, wherein the two cushion blocks, the movable mold base plate and the movable mold plate jointly enclose to form an accommodating space, the movable mold plate is provided with a movable mold groove part recessed from one side of the movable mold plate to the interior of the movable mold plate, the movable mold assembly further comprises an ejection unit accommodated in the accommodating space, a movable mold core accommodated in the movable mold groove part, and a movable mold core positioned in the movable mold core, wherein a circular arc groove part matched with the fixed mold core, a first straight groove part and a second straight groove part are formed in the movable mold core, the first straight groove part is provided with a cylindrical slide block, the cylindrical slide block is connected with an inclined guide pillar positioned on the movable mold core, the inclined guide pillar drives the cylindrical slide block to slide in the first straight groove part, the movable mold core comprises a slide rail positioned in the circular arc groove part and an arc slide block positioned in the center of the slide rail, and a molding cavity is formed between the circular arc slide block and the movable mold core;

the core pulling assembly comprises a core pulling element arranged on the side surface of the movable mould plate, a connecting rod correspondingly connected with the core pulling element and a shovel base inclined plane movably hinged with the connecting rod through a connecting piece, the connecting rod and the shovel base inclined plane are arranged in the second straight groove part, and the shovel base inclined plane is in embedded fit connection with the arc-shaped sliding block;

2. The powder metallurgy injection molding die of a stainless steel arc-shaped wire hoop according to claim 1, wherein a positioning column is arranged at the top end of the cylindrical sliding block, and the positioning column is butted with the arc-shaped sliding block hole.

3. The powder metallurgy injection molding die for a stainless steel arcuate wire clamp of claim 1, wherein the slide rail is fixed to the core, and the slide rail can limit a sliding direction of the arcuate slider.

4. The powder metallurgy injection molding die of a stainless steel arcuate wire hoop according to claim 1, wherein a flow guide pipe is provided below the gate, and the flow guide pipe is connected to the molding cavity.

5. The powder metallurgy injection molding die for a stainless steel arcuate wire clamp of claim 1, wherein the stationary die base plate is provided with at least one grapple needle.

6. The powder metallurgy injection molding die for a stainless steel arcuate wire clamp according to claim 1, wherein the ejection unit includes an ejector pin push plate disposed adjacent to the movable die base plate, a push plate fixing plate fixedly connected to the ejector pin push plate, and an ejector pin penetrating the push plate fixing plate and disposed toward the fixed die assembly.

7. The powder metallurgy injection molding die of a stainless steel arcuate wire ferrule of claim 6, wherein the ejection unit further comprises a reset unit, the reset unit comprising a reset rod and a spring sleeved on the reset rod.

8. The powder metallurgy injection molding die for a stainless steel arcuate wire clamp according to claim 1, wherein the movable die assembly further comprises a support rod fixed to the movable die base plate for supporting the movable die plate.

9. The powder metallurgy injection molding die of a stainless steel arcuate wire hoop according to claim 1, wherein the core pulling member is an oil cylinder, and two sets of core pulling assemblies are provided in a matching manner.

10. The powder metallurgy injection molding die for a stainless steel arcuate wire clamp according to claim 1, wherein the die further comprises a fixing assembly, the fixing assembly comprises a fixing strip, fixing holes are formed at both ends of the fixing strip, and a screw or a bolt fixes the fixing strip to the fixed die plate and the movable die plate simultaneously through the two fixing holes.