CN211218675U - A tool powder molding die - Google Patents

Abstract

The utility model discloses a tool powder forming mold, comprising a base, a backing plate, a blocking plate, an air bag, a mold core, a female tool powder forming mold, a male mold, a discharge thimble and a guide post, and the backing plate is arranged on the base , the guide post is arranged on the backing plate, the blocking plate is arranged on the backing plate, the die core is slidably arranged on the guide post, the tool powder forming female die is set in the die core, the tool powder forming The female mold is arranged in a knife-shaped hollow cavity with an open upper end, the male mold is slidably arranged in the female tool powder forming mold, and the upper end of the male mold is provided with a sealing block. The utility model belongs to the technical field of tool processing, and specifically provides a kind of high practicability, simple operation, setting air flow holes and dust collecting holes to take away the residual powder of the negative mold through the air circulation, ensuring the circulating self-cleaning of the cavity of the negative mold, without disassembly It is a tool powder forming mold with clean, high production efficiency, stable tool forming and uniform and controllable feeding.

Description

A tool powder molding die

technical field

The utility model belongs to the technical field of tool processing, in particular to a tool powder molding die.

Background technique

Due to the high utilization rate of materials, the characteristics of low carbon and environmental protection, and the high consistency of mold production, powder metallurgy is now used more and more widely. The traditional tool powder molding die is to spread the metal powder on the surface of the mold core, and then use the male mold to impact the female mold to stamp the metal powder, which makes the metal powder on the surface of the mold core accumulate and causes waste; after the mold is used for many times, the negative It is easy to form powder accumulation in the mold, which affects the molding effect of subsequent products. The mold needs to be disassembled during cleaning. The disassembly process is cumbersome, wastes man-hours, and increases the cost of use.

Utility model content

In order to solve the above-mentioned existing problems, the utility model provides a kind of high practicability, simple operation, setting air flow holes and dust collecting holes to take away the residual powder of the negative mold through the air circulation, and to ensure the circulating self-cleaning of the negative mold cavity without disassembly and cleaning. , High production efficiency, stable tool forming, uniform and controllable amount of feeding tool powder forming mold.

The technical scheme adopted by the utility model is as follows: The utility model is a tool powder molding die, which includes a base, a backing plate, a blocking plate, an air bag, a mold core, a tool powder molding female die, a male die, a discharge thimble and a guide post. The backing plate is arranged on the base, the guide post is arranged on the backing plate, and the backing plate increases the force-bearing area of the base under the reverse extrusion force of the guide post, so as to avoid local stress on the base when the guide post and the base are in direct contact with the base. The base is damaged, the blocking plate is set on the backing plate, the die core is slidably set on the guide post, the tool powder forming negative die is set in the die core, and the cutting tool powder forming die is a knife with an upper end open. The male mold is slidably installed in the tool powder forming female mold, the upper end of the male mold is provided with a sealing block, the cross-sectional area of the sealing block is larger than the area of the male mold, and the tool powder forming female mold There is a sealing groove on the upper wall of the mold core at the opening of the upper end of the mold, and the cross-sectional area of the sealing block is equal to the cross-sectional area of the sealing groove, which is convenient to seal the upper end opening of the female mold for forming the tool powder, and prevents the metal powder from being removed from the tool powder during stamping. The upper end of the forming female mold overflows, and the height of the punching tool is accurately positioned. The bottom wall of the tool powder forming female mold is provided with a thimble sliding airflow channel. In the sliding airflow channel of the ejector pin, the side wall of the tool powder forming negative mold is provided with a dust collection hole, which is convenient to take away the residual powder in the tool powder forming female mold, so as to ensure that there is no powder residue in the tool powder forming female mold. The airbag is arranged between the blocking plate and the mold core, the airbag is arranged at the sliding airflow channel of the ejector pin, and is connected with the tool powder molding negative mold through the ejector pin sliding airflow channel, and the airbag blows to the tool powder molding negative mold through the ejector pin sliding airflow channel. The dynamic airflow makes the powder in the tool powder forming female mold release from the dust collection hole. The side wall of the mold core is provided with a feeding port that is connected to the tool powder forming female mold. Control, all the powder is sent to the tool powder forming negative mold through the feeding port, so as to avoid the accumulation of powder on the mold surface and save resources.

Further, the airbag is provided with a one-way valve, which is convenient for one-way ventilation into the airbag. When the unloading thimble is reset, the mold core pulls the airbag to reset, so that the airbag can regain gas, and a self-cleaning cycle is established to achieve self-cleaning. cycle back and forth.

Further, the discharge thimble includes a first-order thimble column and a second-order thimble column, the first-order thimble column is arranged on the blocking plate, the second-order column of the thimble is arranged on the first-order column of the thimble, and the first-order thimble is arranged on the first-order column of the thimble. The diameter of the column is smaller than the diameter of the ejector pin sliding airflow channel, so that when the ejector pin ejects the forming tool, the air flow in the air bag flows from the gap between the ejector pin sliding airflow channel and the ejector pin first-order column into the clean cavity in the tool powder molding die The residual powder in the body ensures the cleanness of the cavity. The diameter of the second-order column of the ejector pin is equal to the diameter of the sliding airflow channel of the ejector pin. The second-order column of the ejector pin can completely block the sliding airflow channel of the ejector pin so that the tool powder is formed into a complete cavity.

Further, the outer wall of the guide post is detachably sleeved with a limit sleeve, the limit sleeve is arranged in a C shape, and the limit sleeve can limit the height of the mold core to ensure that when the tool powder is pressed and formed, The height of the mold core remains unchanged to ensure the stability of the tool forming.

Further, the area and shape of the cross-section of the male mold are respectively the same as the area and shape of the cross-section of the female mold for tool powder molding, which ensures that the tool powder is pressed and molded beautifully.

Further, the side wall of the mold core is provided with a feeding observation window, which is convenient for observing the feeding status of the metal powder in the negative mold of the tool powder forming.

Further, the height from the dust collecting hole to the female tool powder forming mold is greater than the height from the male mold to the bottom wall of the tool powder forming female mold, and the height from the feeding port to the tool powder forming female mold is greater than the male mold to the tool powder forming. The height of the bottom wall of the female mold ensures that when the metal powder is pressed and formed, the dust collecting hole and the feeding port will not affect the integrity of the tool and ensure the successful pressing.

The beneficial effects of the utility model obtained by adopting the above-mentioned structure are as follows: In this scheme, a tool powder molding die has a simple structure, reasonable design, low cost, and easy operation. The airflow hole formed by the second-order column and the ejector pin channel acts on the tool powder forming female mold. The airflow above the tool powder forming female mold is resisted by the forming tool and the male mold, and the air pressure is released from the dust collection hole to take away the residual powder in the female mold. , to ensure the self-cleaning of the female mold cavity of the tool powder molding, without disassembling and cleaning the mold, saving man-hours, improving production efficiency, and improving the stability of tool molding; through the setting of the one-way valve in the airbag, the mold core pulls the airbag cavity to reset when the discharge thimble is reset. Regain gas in the airbag, build a self-cleaning cycle, and realize self-cleaning reciprocation; through the side wall of the mold core, a feeding port connected to the tool powder forming die is set to achieve an equal and controllable amount of feeding, and all the powder is fed. To the tool powder forming female mold, to avoid the accumulation of powder on the mold surface and save resources.

Description of drawings

1 is a cross-sectional view of a tool powder molding die of the present utility model;

2 is a schematic diagram of the internal structure of a tool powder molding die of the present invention;

Figure 3 is an exploded view of a tool powder molding die of the present invention.

Among them, 1, base, 2, backing plate, 3, blocking plate, 4, air bag, 5, mold core, 6, tool powder forming female mold, 7, male mold, 8, discharge thimble, 9, guide post, 10 , sealing block, 11, sealing groove, 12, thimble sliding airflow channel, 13, dust collection hole, 14, feed port, 15, one-way valve, 16, thimble first-order column, 17, thimble second-order column, 18, Limiting sleeve, 19. Feeding observation window.

Detailed ways

The technical solution of the present patent will be described in further detail below with reference to the specific implementation. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all the prior art adopted.

The present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in Figures 1-3, a tool powder molding die of the present invention includes a base 1, a backing plate 2, a blocking plate 3, an air bag 4, a mold core 5, a tool powder molding female mold 6, a male mold 7, a discharger The ejector pin 8 and the guide post 9, the backing plate 2 is arranged on the base 1, the guiding post 9 is arranged on the backing plate 2, the blocking plate 3 is arranged on the backing plate 2, and the mold core 5 is slidably arranged on the backing plate 2. On the guide post 9, the tool powder forming female mold 6 is arranged in the mold core 5, the tool powder forming female mold 6 is arranged in a knife-shaped hollow cavity with an upper end open, and the male mold 7 is slidably arranged in the tool powder forming In the female mold 6, the upper end of the male mold 7 is provided with a sealing block 10, the cross-sectional area of the sealing block 10 is larger than the area of the male mold 7, and the tool powder forms the upper wall of the mold core 5 at the upper end opening of the female mold 6 There is a sealing groove 11 on it, the cross-sectional area of the sealing block 10 is equal to the cross-sectional area of the sealing groove 11, the bottom wall of the tool powder forming die 6 is provided with a sliding air channel 12 for ejector pins, and one end of the ejector pin 8 for discharging is provided. Set on the blocking plate 3, the other end of the discharge ejector pin 8 is slidably arranged in the sliding air passage 12 of the ejector pin, the side wall of the tool powder forming female mold 6 is provided with a dust collecting hole 13, and the air bag 4 is provided on the blocking plate 3. Between the mold core 5, the airbag 4 is arranged at the ejector pin sliding air flow channel 12 and is connected to the tool powder forming female mold 6 through the ejector pin sliding air flow channel 12. The side wall of the mold core 5 is provided with a tool powder molding negative mold. The die 6 passes through the connected feeding ports 14 .

The air bag 4 is provided with a one-way valve 15; the discharge ejector pin 8 includes an ejector pin first-order column 16 and an ejector pin second-order column 17, the ejector pin first-order column 16 is arranged on the blocking plate 3, and the ejector pin The second-order column 17 is arranged on the first-order column 16 of the ejector pin, the diameter of the first-order column 16 of the ejector pin is smaller than the diameter of the sliding air flow channel 12 of the ejector pin, and the diameter of the second-order column 17 of the ejector pin is equal to the diameter of the sliding air flow channel 12 of the ejector pin; The outer wall of the guide post 9 is detachably sleeved with a limit sleeve 18, and the limit sleeve 18 is arranged in a C shape; The area of the cross section is the same as the shape; the side wall of the mold core 5 is provided with a feeding observation window 19; The height of the feed port 14 to the tool powder forming female mold 6 is greater than the height from the male mold 7 to the bottom wall of the tool powder forming female mold 6 .

In specific use, pull the male mold 7 upward so that the height from the male mold 7 to the tool powder forming female mold 6 is greater than the height from the feeding port 14 to the tool powder forming female mold 6, and the tool powder forming female mold 6 is passed through the feeding port 14. Pour in the metal powder, observe the feeding of the metal powder through the feeding observation window 19, when the metal powder reaches the height suitable for pressing, press down the male die 7 to make the sealing block 10 snap into the sealing groove 11, so that the metal powder is pressed and formed into a tool For the blank block, after the tool is formed, remove the limit sleeve 18, press down the die core 5, the die core 5 moves down along the guide column 9, and at the same time, the discharge ejector pin 8 moves up relative to the tool powder molding die 6 along the ejector pin sliding airflow channel 12, The forming tool blank and the male die 7 are pushed out along the tool powder forming female die 6, the die core 5 and the blocking plate 3 are close to the extrusion airbag 4, and the air flow in the airbag 4 is formed from the ejector pin second-order column 17 and the ejector pin sliding airflow channel 12. The air flow hole acts on the tool powder forming female mold 6, the airflow above the tool powder forming female mold 6 is resisted by the forming tool and the male mold 7, and the air pressure is released from the dust collection hole 13 to release the residual powder band in the tool powder forming female mold 6. Go, to ensure the self-cleaning of the tool powder forming female mold 6 cavity, no need to disassemble and clean the mold, save man-hours, improve production efficiency, and high tool forming stability; The valve 15 is set, and when the unloading thimble 8 is reset, the mold core 5 pulls the cavity of the airbag 4 to reset, so that the airbag 4 regains gas, and a self-cleaning cycle is established to realize the self-cleaning cycle.

The present invention and the embodiments thereof have been described above, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it, without departing from the purpose of the present invention, and without creatively designing the structural modes and embodiments similar to the technical scheme, all should belong to the protection of the present invention. scope.

Claims (7)

1. The utility model provides a cutter powder forming die which characterized in that: the die comprises a base, a base plate, a stop plate, an air bag, a die core, a tool powder forming female die, a male die, an unloading thimble and a guide post, wherein the base plate is arranged on the base, the guide post is arranged on the base plate, the stop plate is arranged on the base plate, the die core is arranged on the guide post in a sliding manner, the tool powder forming female die is arranged in the die core, the tool powder forming female die is arranged in a knife-shaped hollow cavity with an upper end opening, the male die is arranged in the tool powder forming female die in a sliding manner, a sealing block is arranged at the upper end of the male die, the cross-sectional area of the sealing block is larger than the area of the male die, a sealing groove is arranged on the upper wall of the die core at the upper end opening of the tool powder forming female die, the cross-sectional area of the sealing block is equal to that of, the utility model discloses a cutter powder forming female die, including baffle, gasbag, thimble slip airflow channel department and mould benevolence, cutter powder forming female die lateral wall is equipped with the dust collecting hole, the gasbag is located between baffle and the mould benevolence, the gasbag is located thimble slip airflow channel department and link up with cutter powder forming female die through thimble slip airflow channel and links to each other, mould benevolence lateral wall is equipped with the feed inlet that link up with cutter powder forming female die and.

2. The tool powder forming die of claim 1, wherein: the air bag is provided with a one-way valve.

3. The tool powder forming die of claim 1, wherein: the discharging ejector pin comprises an ejector pin first-order column and an ejector pin second-order column, the ejector pin first-order column is arranged on the blocking plate, the ejector pin second-order column is arranged on the ejector pin first-order column, the diameter of the ejector pin first-order column is smaller than that of the ejector pin sliding airflow channel, and the diameter of the ejector pin second-order column is equal to that of the ejector pin sliding airflow channel.

4. The tool powder forming die of claim 1, wherein: the guide pillar outer wall can be dismantled to cup joint and be equipped with stop sleeve, stop sleeve is the setting of C shape.

5. The tool powder forming die of claim 1, wherein: the area and the shape of the cross section of the male die are respectively the same as those of the cross section of the cutter powder forming female die.

6. The tool powder forming die of claim 1, wherein: and a feeding observation window is arranged on the side wall of the mold core.

7. The tool powder forming die of claim 1, wherein: the height from the dust collecting hole to the cutter powder forming female die is greater than the height from the male die to the bottom wall of the cutter powder forming female die, and the height from the feed port to the cutter powder forming female die is greater than the height from the male die to the bottom wall of the cutter powder forming female die.

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