CN206405409U - A kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts - Google Patents

Abstract

The utility model discloses a kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts, belongs to semi-solid rheological molding field.Mould described in the utility model includes upper bolster, upper mounted plate, punch-pin, cavity plate, core, sleeve, upper disk, lower disc, bottom plate etc., and punch-pin and release link depression bar are fixed between upper bolster and upper mounted plate in flange form；Cavity plate is connected with bottom plate, and core bottom is fixed between bottom plate and die shoe in flange form, up sequentially passes through lower disc, upper disk, sleeve；Sleeve is fixed between upper disk and lower disc in flange form, inside have core by and gap coordinate；Positioned between upper bolster and die shoe by two guide pillars and two guide pin bushings；Release link is located at cavity plate center, bottom and upper disk contact but is not connected to；Press push rod is connected with hydraulic press.Formable four parts of extrusion process of mould described in the utility model; production efficiency and stock utilization are increased substantially, it is adaptable to produced in enormous quantities, and simple to operate, easy to control, flow is short; mechanization control can be achieved, has certain guidance meaning for economizing on resources with environmental protection.

Description

A forming die for semi-solid rheo-squeeze casting bushing parts

technical field

The utility model relates to a forming die for a semi-solid rheological extrusion casting shaft sleeve part, which belongs to the field of semi-solid rheological deformation.

Background technique

Semi-solid metal forming technology is a method of processing and forming the solid-liquid mixed slurry obtained by applying vigorous stirring or other methods during the metal solidification process. The adoption of this technology has certain guiding significance for saving resources and protecting the environment. Since the 1970s, research scholars on semi-solid research have mainly focused on some low-melting point alloys such as magnesium alloys and aluminum alloys, and there are relatively few semi-solid studies on high-melting point alloys such as tin bronze. Tin bronze has high strength, corrosion resistance and excellent wear resistance, and is widely used in steam boilers and important valve parts, gears and worm gears in the shipbuilding industry. Research on the semi-solid forming technology of this alloy is conducive to improving products performance. The production of shaft sleeve parts usually adopts forming methods such as liquid forming or centrifugal casting. Liquid forming requires modeling, pouring, etc. The forming process is cumbersome, and problems such as inclusions and oxidation are prone to occur; the structure obtained by centrifugal casting is not uniform, and defects such as shrinkage porosity and shrinkage cavity are prone to occur. Squeeze casting can well avoid many of the above problems. The extrusion process can not only improve the overall performance of the product, but also have high dimensional accuracy and good surface quality. At present, the extrusion die of copper alloy bushing parts usually adopts a one-piece processing method, and only one part product can be produced at a time, the production efficiency is low, and it is not suitable for mass production; and the extrusion die of copper alloy bushing parts Threaded connections are often used in the demoulding and reset devices, which are prone to loosening after long-term use, resulting in reduced strength and reduced service life of the mold.

Contents of the invention

The purpose of the utility model is to provide a forming mold for semi-solid rheological extrusion casting bushing parts, which can extrude multiple parts at one time, greatly improve production efficiency and material utilization rate, and is suitable for mass production. The mold includes an upper mold base 1, an upper fixing plate 2, a punch 3, a die 4, a core 6, a sleeve 7, an upper disc 8, a lower disc 9, a lower fixing plate 10, a lower die base 11, a press Ejector 12, reset rod pressure rod 15, reset rod 16; the lower surface of the upper die base 1 is connected to the fixed plate 2, and the punch 3 and reset rod pressure rod 15 are fixed on the upper die base 1 and the upper die base in the form of a flange. Between the plates 2; the die 4 is fixed on the lower fixing plate 10, and the lower fixing plate 10 and the lower die base 11 are fixed on the hydraulic press workbench; the upper part of the die 4 is provided with one or more small cavities, and the lower part is a large cavity Each small cavity corresponds to a punch 3; the upper disc 8 and the lower disc 9 are located in the large cavity of the die 4, the upper disc 8 and the lower disc 9 are detachably connected, and the lower disc The lower surface of 9 is in contact with but not connected to the upper surface of lower fixing plate 10; each small cavity corresponds to a core 6, each core 6 corresponds to a sleeve 7, and the bottom end of the core 6 is bounded by a flange edge The form is fixed between the lower fixing plate 10 and the lower mold base 11, passing through the lower disc 9, the upper disc 8, the sleeve 7, and the small cavity from bottom to top; the sleeve 7 is fixed on the upper Between the disc 8 and the lower disc 9; the core 6 is located inside the sleeve 7, and there is a clearance fit between the core 6 and the sleeve 7, and there is also a gap between the sleeve 7 and the small cavity of the die Cooperate, the height of the core 6 is higher than the height of the sleeve 7; the punch 3, the small cavity, the core 6 and the sleeve 7 form the cavity; the reset rod 16 is located in the center of the die 4, and the bottom end and the upper disc 8 Contact but not connected, the upper end is flush with the upper surface of the die 4; the press ejector rod 12 is connected with the hydraulic press, and the reset rod pressing rod 15, reset rod 16, and press ejector rod 12 are in a straight line; the upper die base 1 and the lower die base The mold bases 11 are positioned through guides.

Preferably, the die 4 described in the utility model is fixed on the lower fixing plate 10 by bolts 17, and the lower fixing plate 10 and the lower mold base 11 are fixed on the hydraulic press workbench through a T-shaped plate; Small cavities.

Preferably, the guiding device described in the utility model includes two guide sleeves 13 and two guide posts 14, the upper ends of the guide sleeves 13 are fixedly connected to the two diagonal corners of the lower surface of the upper mold base 1, and the lower ends of the guide posts 14 are fixedly connected At two opposite corners on the upper surface of the lower mold base 11, the upper end of the guide post 14 is sleeved on the lower end of the guide sleeve 13, and the guide sleeve 13 and the guide post 14 are clearance fit.

Preferably, between the punch 3 described in the utility model and the upper die base 1 and the upper fixed plate 2, between the reset rod pressure rod 15 and the upper die base 1 and the upper fixed plate 2, between the sleeve 7 and the upper disc 8 And between the lower disc 9, between the core 6 and the lower fixed plate 10 and the lower mold base 11 are clearance fits.

Preferably, the material of the mold body in the present invention is 40Cr, and the materials of the punch, die, core and sleeve are H13 mold steel, which are processed through heat treatment.

Preferably, ceramic heating coils are provided on the outside of the concave mold (4) of the present invention.

The body shape of the punch 3 described in the utility model is compatible with the cavity of the die 4, and the shape of the internal space where the small cavity, the core and the sleeve are combined together is compatible with the outer contour of the product.

The use process of the mold described in the utility model: before the rheological extrusion, the press ejector rod 12 retreats to the bottom end of the hydraulic press. The upper surface of the lower fixed plate 10 is in contact, and the mold is preheated by the ceramic heating coil, and the preheating temperature is 300~400°C; then the heated and heat-preserved semi-solid slurry is poured into the mold cavity quantitatively, and the punch 3 pairs of slurry are controlled Carry out rheological extrusion forming until the slurry fills the cavity, the extrusion force is 30~180MP, the extrusion speed is 13~25mm/s, and the pressure holding time is 5~10s; after the rheological extrusion is completed, control the convex The mold 3 and the die 4 are separated to 150~300mm, and by controlling the upward movement of the ejector rod 12 of the press, the lower disc 9, the upper disc 8, the reset rod 16, the sleeve 7 and the formed part 5 obtained by extrusion are moved upward together When the formed part 5 is completely exposed to the concave mold cavity, the demoulding is completed; finally, the press ejector rod 12 retreats to the bottom of the hydraulic press, and the reset rod 15 is controlled to squeeze the reset rod 16 to move downward, and at the same time drive the upper The disk 8, the lower disk 9 and the sleeve 7 move downward together, and the lower surface of the current disk 9 contacts the upper surface of the lower fixing plate 10 to complete the reset; the entire extrusion process realizes mechanized control and solves the problem of traditional extrusion casting. Difficult demoulding problems, while achieving mass production, greatly improving production efficiency.

The beneficial effects of the utility model:

(1) The mold described in the utility model can form multiple parts in one extrusion process, the production efficiency and material utilization rate are greatly improved, it is suitable for mass production, and the operation is simple, the control is convenient, the process is short, and mechanized control can be realized. It has certain guiding significance for saving resources and protecting the environment.

(2) Many parts of the mold described in the utility model adopt the way of fixing the flange edge, which not only facilitates the installation and disassembly of the mold during use, but also improves the stability compared with the screw connection and prolongs the service life of the mold.

(3) The use of the guide post and the guide sleeve in the mold described in the utility model improves the matching precision of the punch and the die, reduces other interference, improves the molding precision, and is of great significance for protecting the mold and improving product quality .

(4) The combination of the core, the sleeve, and the reset rod in the mold described in the utility model realizes the mechanized flow operation of the forming, demoulding and mold reset of the parts, and solves the problem of difficult demoulding in the traditional extrusion mold , which has certain guiding significance for squeeze casting small copper alloy bushing parts.

(5) The slurry selected in this utility model is a semi-solid metal slurry. During the extrusion process, the required extrusion force is small, which can realize near-net forming, reduce mechanical processing, and the formed part has a dense structure and internal There are few defects such as pores and segregation, and at the same time, compared with liquid forming, problems such as turbulence and splashing in the extrusion process are avoided.

(6) The utility model has a reasonable structure and a high degree of mechanization, which greatly improves production efficiency, reduces labor costs, and improves product quality.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the forming sleeve parts of the utility model.

In the figure: 1-upper die base; 2-upper fixing plate; 3-punch; 4-concave; 5-forming parts; 6-core; 7-sleeve; 8-upper disc; 9-lower circle 10-lower fixed plate; 11-lower mold base; 12-press ejector rod; 13-guide sleeve; 14-guide post;

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited to the content described.

The material of the mold body in Examples 1 to 2 of the utility model is 40Cr, and the materials of the punch, die, core and sleeve are H13 mold steel, and are processed through heat treatment.

Example 1

A forming die for a semi-solid rheological squeeze casting shaft sleeve part described in this embodiment includes an upper die base 1, an upper fixing plate 2, a punch 3, a die 4, a core 6, a sleeve 7, and an upper circle Disc 8, lower disc 9, lower fixing plate 10, lower die holder 11, press ejector rod 12, reset rod pressing rod 15, reset rod 16; And the reset rod pressure rod 15 is fixed between the upper mold base 1 and the upper fixed plate 2 in the form of a flange; the die 4 is fixed on the lower fixed plate 10, and the lower fixed plate 10 and the lower mold base 11 are fixed on the hydraulic press workbench ; The top of the die 4 is provided with 2 small cavities, the following is a large cavity, and each small cavity corresponds to a punch 3; the upper disc 8 and the lower disc 9 are located in the large cavity of the die 4, and the upper disc The disc 8 and the lower disc 9 are detachably connected, and the lower surface of the lower disc 9 is in contact with but not connected to the upper surface of the lower fixing plate 10; each small cavity corresponds to a core 6, and each type The core 6 corresponds to a sleeve 7, and the bottom end of the core 6 is fixed between the lower fixing plate 10 and the lower mold base 11 in the form of a flange, passing through the lower disc 9, the upper disc 8, and the sleeve from bottom to top. 7. Small cavity; the sleeve 7 is fixed between the upper disc 8 and the lower disc 9 in the form of a flange; the core 6 is located inside the sleeve 7, and there is a gap between the core 6 and the sleeve 7 Cooperate, the sleeve 7 and the small cavity of the die are also clearance fit, the height of the core 6 is higher than the height of the sleeve 7; the punch 3, the small cavity, the core 6 and the sleeve 7 form the cavity The reset rod 16 is located in the center of the die 4, the bottom end is in contact with the upper disc 8 but not connected, and the upper end is flush with the upper surface of the die 4; 1. The ejector pin 12 of the press is on a straight line; the positioning between the upper mold base 1 and the lower mold base 11 is carried out by a guide device, as shown in FIG. 1 .

Example 2

A forming die for a semi-solid rheological squeeze casting shaft sleeve part described in this embodiment includes an upper die base 1, an upper fixing plate 2, a punch 3, a die 4, a core 6, a sleeve 7, and an upper circle Disc 8, lower disc 9, lower fixing plate 10, lower die holder 11, press ejector rod 12, reset rod pressing rod 15, reset rod 16; and the reset rod. The pressing rod 15 is fixed between the upper die base 1 and the upper fixing plate 2 in the form of a flange; The plate is fixed on the working table of the hydraulic press; there are 4 small cavities on the top of the die 4, and a large cavity below, each small cavity corresponds to a punch 3, and a ceramic heating coil is arranged on the outside of the die 4; the upper circle The disc 8 and the lower disc 9 are located in the large cavity of the die 4, the upper disc 8 and the lower disc 9 are detachably connected, and the lower surface of the lower disc 9 is in contact with the upper surface of the lower fixing plate 10 But not connected; each small cavity corresponds to a core 6, and each core 6 corresponds to a sleeve 7, and the bottom end of the core 6 is fixed between the lower fixing plate 10 and the lower mold base 11 in the form of a flange edge, from Pass through the lower disc 9, the upper disc 8, the sleeve 7, and the small cavity in sequence from bottom to top; the sleeve 7 is fixed between the upper disc 8 and the lower disc 9 in the form of a flange; the core 6 is located The inside of the sleeve 7, and the gap fit between the core 6 and the sleeve 7, the gap fit between the sleeve 7 and the small cavity of the die, the height of the core 6 is higher than the height of the sleeve 7; The punch 3, the small cavity, the core 6 and the sleeve 7 form the cavity; the reset rod 16 is located in the center of the die 4, the bottom end is in contact with the upper disc 8 but not connected, and the upper end is flush with the upper surface of the die 4; The press ejector rod 12 is connected with the hydraulic press, and the reset rod pressing rod 15, the reset rod 16, and the press ejector rod 12 are in a straight line; the upper mold base 1 and the lower mold base 11 are positioned by a guide device, and the guide device It includes two guide sleeves 13 and two guide posts 14, the upper ends of the guide sleeves 13 are fixedly connected to the two opposite corners on the lower surface of the upper die base 1, and the lower ends of the guide posts 14 are fixedly connected to the two opposite corners on the upper surface of the lower die base 11. angle, the upper end of the guide post 14 is sleeved on the lower end of the guide sleeve 13,

The guide sleeve 13 and the guide post 14 are clearance fit.

Claims (7)

1. a kind of shaping dies of semi-solid rheological extrusion casint shaft sleeve parts, it is characterised in that：The shaping dies includes upper Die holder（1）, upper mounted plate（2）, punch-pin（3）, cavity plate（4）, core（6）, sleeve（7）, upper disk（8）, lower disc（9）, it is lower solid Fixed board（10）, die shoe（11）, press push rod（12）, release link depression bar（15）, release link（16）；Upper bolster（1）Lower surface With fixed plate（2）Connection, punch-pin（3）With release link depression bar（15）Upper bolster is fixed in flange form（1）With upper mounted plate （2）Between；Cavity plate（4）It is fixed on bottom plate（10）On, bottom plate（10）With die shoe（11）It is fixed on hydraulic press work Above platform；Cavity plate（4）Above be provided with one or more areolas, be one big cavity, each areola correspondingly one below Punch-pin（3）；Upper disk（8）With lower disc（9）Positioned at cavity plate（4）Big cavity in, upper disk（8）With lower disc（9）Between be It is detachably connected, lower disc（9）Lower surface and bottom plate（10）Upper surface between contact but be not connected to；Each areola One core of correspondence（6）, each core（6）One sleeve of correspondence（7）, core（6）Bottom is fixed on lower solid in flange form Fixed board（10）And die shoe（11）Between, lower disc is sequentially passed through from the bottom up（9）, upper disk（8）, sleeve（7）, areola； Sleeve（7）Upper disk is fixed in flange form（8）And lower disc（9）Between；Core（6）Positioned at sleeve（7）Inside, and Core（6）With sleeve（7）Between for gap coordinate, sleeve（7）Also coordinate between the areola of cavity plate for gap, core（6） Height be higher than sleeve（7）Height；Punch-pin（3）, areola, core（6）And sleeve（7）Constitute die cavity；Release link（16）Position In cavity plate（4）Center, bottom and upper disk（8）Contact but be not connected to, upper end and cavity plate（4）Upper surface is concordant；Press push rod （12）It is connected with hydraulic press, release link depression bar（15）, release link（16）, press push rod（12）Point-blank；Upper bolster（1） With die shoe（11）Between positioned by guider.

2. the shaping dies of semi-solid rheological extrusion casint shaft sleeve parts according to claim 1, it is characterised in that：Cavity plate （4）Pass through bolt（17）It is fixed on bottom plate（10）On, bottom plate（10）With die shoe（11）Liquid is fixed on by T-shaped plate Above press bed.

3. the shaping dies of semi-solid rheological extrusion casint shaft sleeve parts according to claim 1, it is characterised in that：Cavity plate （4）Above provided with four areolas.

4. the shaping dies of semi-solid rheological extrusion casint shaft sleeve parts according to claim 1, it is characterised in that：It is described Guider includes two guide pin bushings（13）With two guide pillars（14）, guide pin bushing（13）Upper end be fixedly connected on upper bolster（1）Following table Two of face are diagonal, guide pillar（14）Lower end be fixedly connected on die shoe（11）Two of upper surface are diagonal, guide pillar（14）It is upper End is socketed in guide pin bushing（13）Lower end, guide pin bushing（13）With guide pillar（14）Coordinate for gap.

5. the shaping dies of the semi-solid rheological extrusion casint shaft sleeve parts according to claim 1 ~ 4 any one, it is special Levy and be：The punch-pin（3）With upper bolster（1）And upper mounted plate（2）Between, release link depression bar（15）With upper bolster（1）With it is upper Fixed plate（2）Between, sleeve（7）With upper disk（8）And lower disc（9）Between, core（6）With bottom plate（10）With die shoe （11）Between be gap coordinate.

6. the shaping dies of the semi-solid rheological extrusion casint shaft sleeve parts according to claim 1 ~ 4 any one, it is special Levy and be：The material of die main body is 40Cr, punch-pin（3）, cavity plate（4）, core（6）, sleeve（7）Material be H13 mould steel.

7. the shaping dies of the semi-solid rheological extrusion casint shaft sleeve parts according to claim 1 ~ 4 any one, it is special Levy and be：The cavity plate（4）Outside be provided with ceramic heat coil.