CN214640282U

CN214640282U - Be applied to fashioned mould structure of powder

Info

Publication number: CN214640282U
Application number: CN202120535112.2U
Authority: CN
Inventors: 陈沁琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-11-09
Anticipated expiration: 2031-03-15

Abstract

The utility model provides a be applied to powder forming's mould structure relates to powder forming's mould field, including last mould, well mould, the lower mould, go up the mould, well mould, lower mould top-down sets up in proper order, it includes base and last thimble to go up the mould, the lower mould includes down base and thimble, well mould includes well mould, well mould down, it includes the zone of heating, first cooling layer to go up well mould, zone of heating and first cooling layer fixed connection, the zone of heating sets up in first cooling layer top, well mould includes the second cooling layer down, it sets up in well mould top down to go up well mould, the activity sets up about the relative well mould of well mould down of well mould, the process passage has been seted up on the well mould, the process passage vertically runs through well mould, well mould down, go up the thimble, thimble shape down, the position all matches with the process passage that corresponds. The die keeps the powder raw materials at a preset temperature before heating and forming, so that the phenomenon of uneven distribution of the powder raw materials is avoided; after the heating and forming, the temperature is rapidly reduced, and the rapid discharging is realized.

Description

Be applied to fashioned mould structure of powder

Technical Field

The utility model belongs to the fashioned mould field of powder raw materials, in particular to be applied to fashioned mould structure of powder.

Background

The existing powder raw material forming die is mainly a cold die without a heating function, and the powder raw material is mainly formed by cold forming. The existing powder raw material molding can only be realized by cold pressing and then high-temperature sintering and curing, and the steps are multiple. The patent application number '201920424309.1' discloses a heatable powder raw material forming die, wherein upper punch rods, upper punch extension holes, upper punch positioning holes, forming die cavities and lower punch rods which correspond to each other up and down, are consistent in number and are adaptive in size are arranged on an upper punch supporting block, an upper punch supporting plate, a middle die supporting plate and a lower punch supporting plate, and a middle die pressing groove and a middle die heating seat which can be pressed and embedded, and a covering groove and a forming die cavity which can be covered in a seamless manner are arranged on the upper punch supporting plate, the middle die supporting plate and the lower punch supporting plate, so that a die structure which can be punched up and down and opened and closed flexibly in a powder raw material pressing forming process is formed, and the die structure is accurate in positioning, stable in structure and suitable for batch production; and adopt well mould heating seat and the last mould heating block that can insert electric heating member, make the mould possess the heating function, carry out thermal treatment to powder raw materials at powder raw materials press forming in-process, change its physical properties to a certain extent, make its shaping after inner structure more even, therefore obtain the shaping product that possesses more outstanding performance, be applicable to powder raw materials press forming process.

However, the forming die in this patent document can not cool down the formed product in time after the powder raw material is heated and formed, and needs a period of time to reduce the temperature of the product, so that the production efficiency of the die is relatively low. And the forming die in the patent document is not provided with a specific structure to keep the powder raw material at a preset temperature before the powder raw material is heated and formed, so that the powder raw material is easily influenced by a heating layer of the die or a pressurizing operation and the like before the powder raw material is heated and formed, so that part of the powder raw material is heated and adhered to the cavity wall of the processing channel, and the phenomenon of uneven distribution of the powder raw material is caused. And if the shape after the powder molding is the shape with two different ends, such as a round table, a prismatic table and the like, the existing powder molding die can not realize quick discharging after quick molding.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a be applied to fashioned general mould structure of powder, carry out rapid cooling to it after powder raw materials thermoforming for the production efficiency of this mould is higher.

Another object of the utility model is to provide a be applied to fashioned mould structure of powder, make powder raw materials keep at the predetermined temperature before powder raw materials heating shaping, thereby avoid making partial powder raw materials temperature rise to glue on the chamber wall of processing passageway and the inhomogeneous phenomenon of powder raw materials distribution appears by the influence or pressurization operation etc. of mould zone of heating.

Another object of the utility model is to provide a be applied to fashioned mould structure of powder, the shape that is applicable to after the powder shaping is the shape of both ends variation in size, but quick ejection of compact behind the rapid prototyping.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a die structure applied to powder forming, which comprises an upper die, a middle die and a lower die, wherein the upper die, the middle die and the lower die are sequentially arranged from top to bottom, the upper die comprises an upper base and an upper thimble, the upper thimble is connected with the upper base, the upper thimble is arranged below the upper base, the lower die comprises a lower base and a lower thimble, the lower thimble is connected with a lower base, the lower thimble is arranged above the lower base, the middle die comprises an upper middle die and a lower middle die, the upper middle die comprises a heating layer and a first cooling layer, the heating layer is fixedly connected with the first cooling layer, the heating layer is arranged above the first cooling layer, the lower middle die comprises a second cooling layer, the upper middle die is arranged above the lower middle die, the upper middle die is movably arranged up and down relative to the lower middle die, a processing channel is arranged on the middle die, the processing channel longitudinally penetrates through the upper middle die and the lower middle die, the shape and the position of the upper thimble are matched with the corresponding processing channel, the upper thimble and the lower thimble are movably arranged up and down relative to the processing channel, the length of the upper thimble is larger than that of the processing channel in the upper die and the middle die, and the length of the lower thimble supports the lower thimble to move to the heating layer in the processing channel.

In practical application, a user connects the power structure with the upper thimble and the lower thimble, and the other power structure is connected with the upper middle mold or the lower middle mold, the power structure drives the upper thimble and the lower thimble to move up and down in the direction of the machining channel, and the power structure drives the upper middle mold or the lower middle mold to be combined or separated. The shape and the position of the upper thimble and the lower thimble are matched with the corresponding processing channels, and the matching refers to that: the position of the upper thimble is aligned with the position of the processing channel in the upper middle die, and the power structure drives the upper thimble to enter and exit the processing channel in the upper middle die and push the powder raw material out of the upper middle die along the processing channel; the position of the lower thimble is aligned with the position of the processing channel in the lower middle die, the power structure drives the lower thimble to enter and exit the processing channel in the lower middle die, and the powder raw material is conveyed to the second cooling layer along the processing channel, and the shape and the position of the lower thimble are matched with the lower part of the processing channel in the upper middle die, so that the lower thimble can convey the powder raw material to the heating layer along the processing channel. The length of the upper thimble is greater than that of the processing channel in the upper middle die, so that the upper thimble pushes the powder raw material out of the upper middle die to realize discharging. The length of the lower thimble supports the lower thimble to move to the heating layer in the processing channel, namely the lower thimble moves upwards in the processing channel and can push the powder raw material to send the powder raw material to the heating layer.

The working process of the die for realizing the molding of the powder raw material is as follows: in the initial state, the upper middle die and the lower middle die are in a separated state, and a larger gap is formed between the upper middle die and the lower middle die. When the cooling device starts to work, the lower ejector pin enters the machining channel to reach the preset position of the second cooling layer, and the lower ejector pin and the machining channel in the second cooling layer are enclosed to form a feeding cavity. The user places the powder feedstock into the feed cavity from the gap between the upper and lower middle dies. After the feeding is finished, the upper middle die is close to the lower middle die, so that the upper middle die and the lower middle die are combined into a whole, the processing channel is communicated to form a continuous channel, and the upper thimble and the lower thimble can move in the processing channel. The lower thimble moves in the processing channel to convey the powder raw material to the heating layer, and the upper thimble, the lower thimble and the heating layer jointly carry out hot pressing on the powder raw material. The lower thimble after the hot pressing treatment jointly transports the powder raw materials to a first cooling layer with the upper thimble, cools the powder raw materials after the hot press molding, and is convenient for follow-up quick ejection of compact. After cooling, the lower thimble withdraws from the upper middle die, and the lower middle die is far away from the upper middle die, so that a gap for discharging materials is formed between the upper middle die and the lower middle die. The upper thimble pushes the powder raw material in the first cooling layer out of the upper middle die, so that quick discharging is realized. The second cooling layer plays the accuse temperature effect to the powder raw materials in the feeding chamber, makes the temperature of powder raw materials be in predetermined temperature all the time, thereby avoids the second cooling layer to receive the influence of zone of heating or pressurization operation etc. to make partial powder raw materials temperature rise to glue on the chamber wall of process passageway and the inhomogeneous phenomenon of powder raw materials distribution appears. The heating layer also has the temperature control effect on the powder raw materials, so that the temperature of the powder raw materials is always at the preset high temperature, the powder raw materials are uniformly fused, and the powder raw materials are convenient to press and form. First cooling layer plays the refrigerated effect of cooling down rapidly to the powder raw materials after the thermoforming, makes the temperature of powder raw materials reduce to predetermined temperature range fast, can realize the ejection of compact rapidly, so improves the production efficiency of mould.

Furthermore, the upper middle die further comprises a heat insulation plate which is fixedly arranged between the heating layer and the first cooling layer. The heat insulating plate functions to prevent heat from being transferred between the immediately adjacent heating layer and the first cooling layer.

Further, a heat medium channel is arranged in the heating layer, the first cooling layer and the second cooling layer, an inlet and an outlet are arranged on the side walls of the heating layer, the first cooling layer and the second cooling layer, and the inlet, the heat medium channel and the outlet on each layer are communicated in sequence. The user can input water, oil, air and other heating media into the heating medium channel through the inlet and then flow out through the outlet.

Further, the heating medium channels in the heating layer, the first cooling layer and the second cooling layer are respectively arranged around the processing channel in the layer. The powder raw materials in each processing channel are heated uniformly in the heating layer and cooled uniformly in the first cooling layer and the second cooling layer, so that the temperatures of the processing channels in the heating layer, the first cooling layer and the second cooling layer are respectively controlled at corresponding preset values.

Furthermore, the number of the upper ejector pins, the lower ejector pins and the processing channels is multiple, and the heating medium channels in the heating layer, the first cooling layer and the second cooling layer are distributed in a net shape. The processing channels in the layer structure are arranged in the mesh, and the periphery of each processing channel is surrounded by the heating medium channel, so that uniform heating or uniform cooling is realized.

Furthermore, the upper ejector pin is fixedly connected with the upper base, the lower ejector pin is fixedly connected with the lower base, and the upper base and the lower base are movably arranged up and down relative to the middle die. A user connects the power structure with the upper base and the lower base, and the power structure drives the upper base and the lower base to move, so that the upper thimble and the lower thimble can be driven to move.

Furthermore, the upper thimble is cylindrical, the machining channel in the heating layer is circular truncated cone, the machining channel in the first cooling layer and the second cooling layer is cylindrical, and the lower thimble is cylindrical.

The upper thimble can be arranged to be prism-shaped, the processing channel in the heating layer can be prism-shaped, the processing channel in the first cooling layer and the second cooling layer can be prism-shaped, and the lower thimble can be prism-shaped. The shapes of the upper thimble, the processing channel and the lower thimble can be determined according to the specific shape after powder molding (the shape applicable to the powder molding is the shape with different sizes of the upper end and the lower end), so that the upper thimble, the processing channel and the lower thimble are matched with each other, and the quick discharging after the quick molding can be realized.

Further, an electric heating pipe is arranged in the heat medium pipeline of the heating layer. The user makes electric heating pipe generate heat for the zone of heating through supplying power to electric heating pipe.

The utility model has the advantages that: compared with the prior art, the utility model discloses in the middle of, the mould structure that is applied to powder molding makes powder raw materials keep at predetermined temperature before powder raw materials heat forming, avoids making partial powder raw materials temperature rise and consequently glue on the chamber wall of processing passageway and the inhomogeneous phenomenon of powder raw materials distribution appear by the influence of mould zone of heating or pressurization operation etc.; carry out rapid cooling to it after powder raw materials thermoforming, realize quick ejection of compact for the production efficiency of mould is higher. The die structure applied to powder forming is also suitable for the shape after powder forming, and the shape is different in size at two ends, so that quick discharging can be realized after quick forming.

Drawings

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

Fig. 2 is a schematic view showing the distribution of the process and heat medium passages inside each layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

referring to fig. 1-2, the utility model provides a be applied to fashioned simple mould structure of powder, including last mould 1, well mould 3, lower mould 2, go up mould 1, well mould 3, 2 top-down of lower mould set up in proper order, go up mould 1 and include base 11 and last thimble 12, go up thimble 12 and last base 11 fixed connection, go up thimble 12 and set up in last base 11 below, lower mould 2 includes base 21 and lower thimble 22 down, lower thimble 22 and lower base 21 fixed connection, lower thimble 22 sets up in base 21 top down, go up base 11, lower base 21 is the relative well mould 3 activity setting from top to bottom. The middle mold 3 comprises an upper middle mold 35 and a lower middle mold 36, the upper middle mold 35 is composed of a heating layer 351, a heat insulation plate 352 and a first cooling layer 353, and the heating layer 351, the heat insulation plate 352 and the first cooling layer 353 are sequentially stacked from top to bottom and fixedly connected. The lower middle mold 36 includes a second cooling layer 361, the upper middle mold 35 is disposed above the lower middle mold 36, and the upper middle mold 35 is movably disposed up and down relative to the lower middle mold 36. When the upper and lower intermediate molds 35 and 36 are integrated, the heat insulating plate 352 functions to prevent heat from being transferred between the heating layer 351 and the first cooling layer 353. The middle mold 3 is provided with a processing channel 31, and the processing channel 31 longitudinally penetrates through the heating layer 351, the heat insulation plate 352, the first cooling layer 353 and the second cooling layer 361. The part of the processing channel 31 on the upper middle mold is an upper processing channel 311, the part of the processing channel 31 on the lower middle mold is a lower processing channel 312, the upper middle mold 35 and the lower middle mold 36 are combined into a whole, and the processing channel 31 is communicated to form a continuous channel. The shapes and positions of the upper thimble 12 and the lower thimble 22 are matched with the corresponding processing channels 31, the upper thimble 12 and the lower thimble 22 can move up and down relative to the processing channels, the length of the upper thimble 12 is greater than that of the upper processing channel 311, and the length of the lower thimble 22 supports the lower thimble 22 to move to the heating layer 351 in the processing channel 21.

In practical application, a user connects the power structure with the upper base 11 and the lower base 21, and the power structure drives the upper base 11 and the lower base 21 to move, so as to drive the upper thimble 12 and the lower thimble 22 to move. And the other power structure is connected with the upper middle mold 35 or the lower middle mold 36, the power structure drives the upper thimble 12 and the lower thimble 22 to move up and down in the direction of the processing channel 31 respectively, and the power structure drives the upper middle mold 35 or the lower middle mold 36 to be combined or separated. The shape and position of the upper thimble 12 and the lower thimble 22 are matched with the corresponding processing channel 31, which means that: the position of the upper thimble 12 is aligned with the position of the processing channel 31 in the upper middle die 35, and the power structure drives the upper thimble 12 to enter and exit the processing channel 31 in the upper middle die 35 and push the powder raw material out of the upper middle die 35 along the processing channel 31; the lower needle 22 is aligned with the processing channel 31 in the lower middle mold 36, the power structure drives the lower needle 22 to enter and exit the processing channel 31 in the lower middle mold 36, and the powder material is conveyed to the second cooling layer 361 along the processing channel 31, and the shape and position of the lower needle 22 are matched with the lower portion of the processing channel 31 in the upper middle mold 35, so that the lower needle 22 can convey the powder material to the heating layer 351 along the processing channel 31. The length of the upper thimble 12 is greater than the length of the processing channel 31 in the upper middle die 35, so that the upper thimble 12 pushes the powder raw material out of the upper middle die 35 to realize discharging. The length of the lower needle 22 supports the movement of the lower needle 22 in the processing passage 31 to the heating layer 351, that is, the lower needle 22 moves upward in the processing passage 31, and can push the powder material to the heating layer 351.

The working process of the die for realizing the molding of the powder raw material is as follows: in the initial state, the upper intermediate mold 35 and the lower intermediate mold 36 are in a separated state, and a large gap occurs between the upper intermediate mold 35 and the lower intermediate mold 36. When the cooling device starts to work, the lower ejector pin 22 enters the processing channel 31 to reach the preset position of the second cooling layer 361, and the lower ejector pin 22 and the processing channel 31 in the second cooling layer 361 enclose to form a feeding cavity. The user places the powder feedstock into the feed cavity from the gap between the upper and lower intermediate dies 35, 36. After the feeding is finished, the upper middle mold 35 approaches to the lower middle mold 36, so that the upper middle mold 35 and the lower middle mold 36 are assembled into a whole, the processing channel 31 is communicated to form a continuous channel, and the upper thimble 12 and the lower thimble 22 can move in the processing channel 31. The lower needle 22 moves in the processing passage 31 to convey the powder material to the heating layer 351, and the upper needle 12, the lower needle 22, and the heating layer 351 are combined to perform hot pressing on the powder material. After the hot pressing treatment, the lower thimble 22 and the upper thimble 12 jointly convey the powder raw material to the first cooling layer 353, and the powder raw material after the hot pressing forming is cooled, so that the subsequent quick discharging is facilitated. After cooling, the lower thimble 22 is withdrawn from the upper middle mold 35, and the lower middle mold 36 is moved away from the upper middle mold 35, so that a gap for discharging material is formed between the upper middle mold 35 and the lower middle mold 36. The upper thimble 12 pushes the powder raw material in the first cooling layer 353 out of the upper middle mold 35, so as to realize quick discharging. The second cooling layer 361 controls the temperature of the powder raw materials in the feeding cavity, so that the temperature of the powder raw materials is always at a preset temperature, and the phenomenon that the powder raw materials are unevenly distributed due to the fact that the second cooling layer 361 is affected by the heating layer 351 or is adhered to the wall of the processing channel 31 due to pressurization operation and the like, and the temperature of part of the powder raw materials is increased is avoided. The heating layer 351 also has the temperature control effect on the powder raw materials, so that the temperature of the powder raw materials is always at the preset high temperature, the powder raw materials are uniformly fused, and the powder raw materials are convenient for pressure forming. First cooling layer 353 plays the refrigerated effect of cooling down rapidly to the powder raw materials after the thermoforming, makes the temperature of powder raw materials reduce to predetermined temperature range fast, can realize the ejection of compact rapidly, so improves the production efficiency of mould.

The heating layer 351, the first cooling layer 353 and the second cooling layer 361 are all provided with heat medium channels 32, the side walls of the heating layer 351, the first cooling layer 353 and the second cooling layer 361 are provided with inlets 33 and outlets 34, and the inlets 33, the heat medium channels 32 and the outlets 34 of all the layers are communicated in sequence. A user may input heating medium such as water, oil, etc. into the heating medium passage 32 through the inlet 33 and then flow out through the outlet 34.

The heating layer 351, the first cooling layer 353 and the heat medium channel 32 inside the second cooling layer 361 are arranged around the processing channel 31 inside the layer structure, so that the powder raw materials in the processing channels 31 are uniformly heated in the heating layer 351 and uniformly cooled in the first cooling layer 353 and the second cooling layer 361, and the temperatures of the processing channels 31 inside the heating layer 351 and the second cooling layer 361 are respectively controlled at corresponding preset values.

The number of the upper ejector pins 12, the lower ejector pins 22 and the machining passage 31 is four, the upper ejector pins are cylindrical, the machining passage in the heating layer 351 is circular truncated cone, the machining passage in the first cooling layer 353 and the second cooling layer 361 is cylindrical, and the lower ejector pins are cylindrical. The heating medium channels 32 in the heating layer 351, the first cooling layer 353 and the second cooling layer 361 are distributed in a net shape. The processing channels 31 in the layer structure are arranged in a mesh, and a heating medium channel 32 is surrounded on the periphery of each processing channel 31 to realize uniform heating or uniform cooling.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a be applied to fashioned mould structure of powder, includes mould, well mould, lower mould, goes up mould, well mould, lower mould top-down and sets up in proper order, goes up the mould and includes base and last thimble, goes up the thimble and is connected with last base, goes up the thimble and sets up in last base below, and the lower mould includes base and thimble down, and lower thimble is connected with lower base down, and lower thimble sets up its characterized in that in lower base top: the middle mould comprises an upper middle mould and a lower middle mould, the upper middle mould comprises a heating layer and a first cooling layer, the heating layer is fixedly connected with the first cooling layer, the heating layer is arranged above the first cooling layer, the lower middle mould comprises a second cooling layer, the upper middle mould is arranged above the lower middle mould, the upper middle mould is movably arranged on the lower middle mould relative to the lower middle mould, a processing channel is arranged on the middle mould, the processing channel longitudinally penetrates through the upper middle mould and the lower middle mould, an upper thimble and a lower thimble are arranged, the positions of the upper thimble and the lower thimble are matched with the corresponding processing channel, the upper thimble and the lower thimble are movably arranged relative to the processing channel, the length of the upper thimble is greater than the length of the processing channel in the upper middle mould, and the lower thimble is supported by the length of the lower thimble to move to the heating layer in the processing channel.

2. The die structure for powder molding as claimed in claim 1, wherein: the upper middle die further comprises a heat insulation plate which is fixedly arranged between the heating layer and the first cooling layer.

3. The die structure for powder molding as claimed in claim 2, wherein: the heating medium channel has been all seted up in the inside of zone of heating, first cooling layer, second cooling layer, has seted up entry, export at the lateral wall of zone of heating, first cooling layer, second cooling layer, and entry, heating medium channel, the export on every layer communicate in proper order.

4. A die structure for powder molding according to claim 3, wherein: heating medium channels in the heating layer, the first cooling layer and the second cooling layer are arranged around the processing channel in the layer respectively.

5. The die structure for powder molding as claimed in claim 4, wherein: the number of the upper ejector pins, the lower ejector pins and the processing channels is multiple, and the heating medium channels in the heating layer, the first cooling layer and the second cooling layer are distributed in a net shape.

6. The die structure for powder molding as claimed in claim 1, wherein: the upper ejector pin is fixedly connected with the upper base, the lower ejector pin is fixedly connected with the lower base, and the upper base and the lower base are movably arranged up and down relative to the centering die.

7. The die structure for powder molding as claimed in claim 1, wherein: the upper thimble is cylindrical, the machining channel is circular truncated cone in the heating layer, the machining channel is cylindrical in the first cooling layer and the second cooling layer, and the lower thimble is cylindrical.

8. A die structure for powder molding according to claim 3, wherein: an electric heating pipe is arranged in the heating medium pipeline of the heating layer.