CN105478675B - Motor casing evaporative pattern mold with mold insert quick change construction - Google Patents

Abstract

The invention belongs to the technical field of lost foam molds, and proposes a lost foam mold for motor housings with a quick-change structure for inserts. The proposed lost foam mold for motor case with insert quick change structure includes an upper mold (12), an intermediate air chamber and a lower mold (16); the intermediate air chamber includes an intermediate air frame (14), an intermediate air frame sealing plate (15) and quick-change live blocks (9); four quick-change live blocks (9) are located in the middle air frame (14); four quick-change live blocks (6) under the effect of four cylinders (3), The mold cavity is formed by moving inwardly; the lower mold (16) includes the lower mold core (19), the lower mold core movable block (24) and the lower mold air frame; Cylinder; the lower mold core loose block (24) is located in the lower mold core (19) slot; the middle air chamber is connected with the lower mold (16) through the spring mechanism (17). The invention ensures that multiple products can be produced on the same set of moulds, the operation is convenient, and the white molds are well formed.

Description

Lost Foam Mold for Motor Housing with Insert Quick Change Structure

technical field

The invention belongs to the technical field of lost foam molds, and mainly proposes a lost foam mold of a motor casing with a quick-change structure of inserts.

Background technique

The difficulty of adopting the lost foam casting process for the motor shell lies in the casting of the heat sink around the motor shell (the wall thickness of the heat sink is generally 2.5-5mm, 30-60mm higher than the outer surface of the outer circle), and the same circle of the stator surface is installed in the middle. Based on the analysis of the difficulties in the lost foam casting of the motor shell above, the treatment of the uniform wall thickness of the inner shape, the design points of the lost foam mold of the motor shell are mainly reflected in the parting and processing of the cooling fins around the motor shell product , The material of the insert is selected, and the mold is pre-opened and filled. Because there are many heat sinks in the motor shell, the mold inserts need to be processed by forging aluminum, which is costly, but the types of motor shells are not much different. Universal inserts can be exchanged to realize a set of molds to produce multiple products. However, due to the relatively large inserts In addition, due to the large variety of motor casings, each type of motor casing has a horizontal frame and a vertical frame, while the same type of motor casing has a horizontal frame and a vertical frame. The difference between the motor base is that the motor housing has legs and no legs, and other features are exactly the same; but in the prior art, when producing the same type of horizontal base and vertical base, it is necessary to target the same type of horizontal base Make corresponding molds respectively with the vertical support, which increases the production cost and the labor intensity of the workers.

Contents of the invention

In order to solve the above-mentioned technical problems, the purpose of the present invention is to propose a motor housing lost foam mold with an insert quick-change structure.

The present invention adopts following technical scheme for accomplishing the above object:

A motor housing lost foam mold with an insert quick change structure, the motor housing lost foam mold includes an upper mold and a lower mold; the upper mold includes an upper mold core, an upper mold air frame and an upper mold Mold sealing plate; the upper end surface of the upper mold air frame is closed by the upper mold sealing plate; the upper mold core is connected with the upper mold air frame through a spring; the motor shell lost foam mold also includes There is an intermediate air chamber; the intermediate air chamber includes an intermediate air frame, an intermediate air frame sealing plate and a quick-change movable block; the lower end surface of the intermediate air frame is closed by the intermediate air frame sealing plate; the The quick-change movable blocks are four uniformly distributed along the circumference, and the four quick-change movable blocks are located in the middle air frame; corresponding to the four described quick-change movable blocks, a quick-change mechanism is respectively arranged; The mechanism includes guide rods, quick-change guide sleeves and cylinders; the guide rods are four corresponding to each of the quick-change movable blocks; one end of the four guide rods respectively passes through the passage of the middle air frame The quick-change guide sleeve is connected with the corresponding quick-change movable block; the quick-change guide sleeve and the quick-change movable block are connected as a whole through screws to form a detachable quick-change movable block; the four guides The other ends of the rods are respectively connected to the cylinders outside the middle air frame, so that the four quick-change movable blocks are moved inwardly and closed under the action of the four cylinders to form a mold cavity; the lower mold includes a lower mold core , the lower mold core movable block and the lower mold air frame; the lower mold core is located in the lower mold air frame, and is set correspondingly to the upper mold core; the lower mold core has a defect on the outer circular surface The cylinder of the groove; the said lower mold core movable block is located in the missing groove described in the lower mold core, and correspondingly said lower mold core movable block is provided with a driving guide mechanism for driving its action; said lower mold core Under the action of the driving and guiding mechanism, the movable block moves inwards into the slot of the lower mold core, and together with the lower mold core forms a structure for supporting the molded motor casing, and constitutes the The movable block of the lower mold core moves outward under the action of the driving guide mechanism to break away from the missing groove of the lower mold core, which is convenient for taking out the structure of the white mold of the motor housing; the middle air chamber is connected with the lower mold core through the spring mechanism. The molds are connected so that the intermediate air chamber can be separated from the lower mold to realize mold opening or combined with the lower mold to realize mold closing under the action of the spring mechanism.

The lower end face of the upper mold is used as the upper mold parting surface, and the upper mold parting surface is provided with an upper mold quick-change movable block stopper for limiting the closed quick-change movable block when the mold is closed, The quick-change movable block stoppers of the upper die are four blocks located on the parting surface of the upper die.

The top surface of the upper mold core has a positioning groove, and the upper mold core has an upper mold core positioning column matched with the positioning groove on the upper mold core; the upper mold core passes through the upper mold positioning column and the upper mold core. The upper positioning groove is positioned to achieve the purpose that the upper core cannot be rotated.

There are through holes convenient for ventilation and drainage around the parting surface of the upper mold.

There are positioning columns around the upper mold air frame, and there are positioning grooves cooperating with the positioning columns on the upper mold air frame around the middle air frame; the upper mold air frame has positioning columns and the middle air frame The positioning grooves on the top together constitute a positioning mechanism that plays a positioning role when the lost foam mold is closed.

The upper end surface of the lower mold is used as the parting surface of the lower mold, and the parting surface of the lower mold is provided with a quick-change movable block stopper for limiting the closed quick-change movable block when the mold is closed, The quick-change movable block stoppers of the lower mold are four pieces located on the parting surface of the upper mold; when the mold is opened, under the action of the spring mechanism, a certain gap will be opened between the middle air frame and the lower mold, and the spring will After opening, the quick-change movable block block of the lower mold will move downward with the lower mold, so that the quick-change movable block is separated from the quick-change movable block block of the lower mold, and the quick-change movable block can be driven by the cylinder to move outward.

There are breathable and water permeable holes around the parting surface of the middle air frame.

The quick-change movable block has an installation groove for the wear-resistant block of the quick-change movable block, and the sealing plate of the intermediate air frame has an installation groove for installing the wear-resistant block of the intermediate air frame sealing plate; the quick-change movable block The wear-resistant block is located in the installation groove of the quick-change movable block, and the height of the wear-resistant block of the quick-change movable block is higher than the height of the installation groove described in the quick-change movable block; the wear-resistant block of the middle air frame sealing plate is located in the middle air In the installation groove described on the frame sealing plate, and cooperate with the wear-resistant block of the quick-change movable block, in order to prevent the friction resistance between the quick-change movable block and the sealing plate of the middle air frame from being large.

There are positioning grooves for installing spring mechanisms around the lower mold, and drainage holes are respectively provided on both sides of the lower mold.

The invention proposes a motor shell lost foam mold with a quick-change structure for inserts. It adopts the method of quickly replacing the spare quick-change loose blocks to ensure that a variety of products can be produced on the same set of molds, and the molds are easy to operate and white. Good molding; reduce the labor intensity of workers, production cost and mold cost, ensure the consistency of white mold molding, and have the characteristics of simple molding operation, good product consistency, high foam pattern precision, and good molding effect.

Description of drawings

Fig. 1 is a schematic diagram of the clamping state of the present invention.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a schematic structural diagram of the quick-change movable block of the present invention.

Fig. 4 is a schematic diagram of the combined structure of the present invention.

Fig. 5 is a schematic diagram of the mold opening state of the present invention.

Fig. 6 is a schematic diagram of the mold opening state of the lower mold in the present invention.

Fig. 7 is a schematic diagram of the lower mold in the present invention.

Fig. 8 is a cut-away bottom view of the lower mold in the present invention.

Fig. 9 is a schematic diagram of the upper mold in the present invention.

Fig. 10 is a schematic structural view of a horizontal machine base of a motor housing.

Figure 11 is a schematic diagram of the structure of the vertical machine base of the motor housing

In the figure: 1. Motor housing horizontal base, 2. Motor housing vertical base, 3. Cylinder, 4. Cylinder plate, 5. Guide rod, 6. Quick-change guide sleeve, 7. Guide sleeve, 8 , Nut, 9, Quick-change loose block, 10, Automatic material gun, 11, Upper mold sealing plate, 12, Upper mold, 13, Upper mold nozzle, 14, Middle air frame, 15, Middle air frame sealing plate, 16, Lower mold, 17, spring structure, 18, lower mold nozzle, 19, lower mold core, 20, middle air frame sealing plate wear-resistant block, 21, lower mold quick change movable block block, 22, middle air frame sealing plate positioning Column, 23, air vent, 24, lower die core movable block, 25, lower die core movable block tie rod, 26, lower die core movable block guiding mechanism, 27, quick change live block wear block, 28, upper die core , 29, spring and screw, 30, positioning column, 31, upper die quick change loose block block, 32, upper die air frame.

Specific implementation method

The present invention is described in conjunction with picture and specific embodiment:

As shown in Figure 1 and Figure 4, a motor shell lost foam mold with a quick-change structure for inserts, combined with Figures 10 and 11, the purpose of the quick-change structure of the motor shell is to produce in the same set of molds The motor casing horizontal frame 1 and the motor casing vertical frame 2; the motor casing lost foam mold includes an upper mold 12 and a lower mold 16; in conjunction with Figure 9, the upper mold 12 includes an upper mold Mold core 28, upper mold air frame 32 and upper mold sealing plate 11; the upper end face of described upper mold air frame 32 is closed by upper mold sealing plate 11; automatic material gun 10 is installed on the upper mold sealing plate 11, and upper mold Two sides of the upper die nozzle 13 are respectively made on both sides of 12; the upper die core 28 is set on the upper die air frame 32 by springs and screws 29, and the upper die sealing plate 11 is set on the upper die with screws. On the air frame 32, the sealing strip is sealed between the upper mold sealing plate 11 and the upper mold air frame 32 to prevent air leakage; the upper mold air frame 32 is numerically processed to form a sealing groove, the sealing strip is installed in the sealing groove, and then the Put the upper mold sealing plate on the upper mold air frame, and then fix it with screws and nuts; the motor shell lost foam mold also includes an intermediate air chamber; the intermediate air chamber includes an intermediate air frame 14 , the middle air frame sealing plate 15 and the quick-change movable block 9; the lower end surface of the middle air frame 14 is closed by the middle air frame sealing plate 15; the middle air frame 14 and the middle air frame sealing plate 15 are installed together , fixed with stainless steel screws; the middle air frame sealing plate needs to be made with positioning columns for the middle air frame, and the middle air frame needs to be made with positioning grooves to facilitate the sealing of the middle air frame and the middle air frame Positioning; screw holes are made on the middle air frame, screw holes at the same position are made on the sealing plate of the middle air frame, and the sealing plate of the middle air frame and the middle air frame are fixed together by screws. The middle air frame and the sealing plate of the middle air frame need to make holes for installing spray pipes, and also need to make drainage vent holes, and the drainage vent holes should be made as many as possible; the quick-change movable block 9 is Four blocks evenly distributed along the circumference, the four quick-change movable blocks 9 are located in the middle air frame 14; corresponding to the four described quick-change movable blocks 9, a quick-change mechanism is respectively provided; the described quick-change mechanism includes There are guide rods 5, quick-change guide sleeves 6 and cylinders 3; the guide rods 5 are four corresponding to each described quick-change live block; one end of the four guide rods 5 passes through the middle gas cylinder respectively. The frame is connected with the corresponding quick-change movable block 9 through the quick-change guide sleeve 6; the quick-change movable block 9 is engraved with a distinguishing mark, and four bosses for installing the quick-change guide sleeve 6 are made on the quick-change movable block , the boss has four screw holes for installing the quick-change guide sleeve 6 in one week, and the boss also needs to make an anti-rotation limit; the quick-change guide sleeve 3 and the quick-change guide sleeve The movable block 9 is connected as a whole by screws to form a quick-change movable block of a detachable structure; the other ends of the four guide rods 5 are respectively connected with the cylinder 3 on the outside of the middle air frame. The side wall of the frame 14 is fixed with a guide sleeve 7 by screws, and the guide sleeve 7 needs to be fixed to the middle air frame 14 with four screws, and a sealing ring needs to be installed on the guide sleeve 7 to prevent the guide sleeve and the intermediate air Air leakage between frames; cylinder plate 4 is fixed with screws on the cylinder 3 outside the middle air frame, and cylinder plate 4 is made of forged aluminum Make and make the weight-reducing groove; The positioning holes on the four corners of the cylinder plate 4 need to penetrate in the guide rod 5, and the cylinder plate is fixed on the guide rod with nuts 8; Under the action of the four cylinders 3, the block 6 moves inward and closes to form a mold cavity;

With reference to Fig. 6, Fig. 7 and Fig. 8, the lower mold 16 includes a lower mold core 19, a lower mold core movable block 24 and a lower mold air frame; the lower mold core 19 is located in the lower mold air frame , and set corresponding to the upper core 28; the lower core 19 is a cylinder with a groove on the outer surface; the movable block 24 of the lower core is located in the groove of the lower core 19 , corresponding to the lower mold core block 24 is provided with a driving guide mechanism to drive its action; the lower mold core movable block 24 moves inwardly under the action of the drive guide mechanism and enters the slot described in the lower mold core Together with the lower mold core 19, it forms a structure for supporting the molded motor housing, and the movable block of the lower mold core moves outward under the action of the driving guide mechanism to break away from the lower mold core. The missing groove is convenient for taking out the structure of the white mold of the motor housing; the intermediate air chamber is connected with the lower mold 16 through the spring mechanism 17, so that the intermediate air chamber can be pressed under the action of the spring mechanism 17 , separate from the lower mold to realize mold opening or combine with the lower mold to realize mold closing.

The lower end surface of the upper mold 12 is used as the upper mold parting surface, and the upper mold parting surface is provided with an upper mold quick-change movable block stopper for limiting the closed quick-change movable block when the mold is closed. 31. The quick-change movable block stoppers 31 of the upper die are four blocks located on the parting surface of the upper die.

There are 8 charging ports evenly made in the middle of the upper mold where there is material, and the same material gun installation holes need to be made at the corresponding positions of the upper mold sealing plate. The automatic material gun is installed on the sealing plate of the upper mold; the white mold particles are rushed into the mold cavity by the automatic material gun under the action of air pressure.

The top surface of the upper mold core 28 has a positioning groove, and the upper mold core locating column is matched with the positioning groove on the upper mold core; the upper mold core 28 passes through the upper mold positioning column and the upper mold core. The positioning groove on the mold core realizes the purpose that the upper mold core cannot rotate.

The product part number of the motor casing needs to be engraved on the upper mold core, in order to install correctly; three positioning grooves need to be made on the upper mold core, and the positioning grooves play a positioning role , so that the inner cavity of the white mold of the motor shell can be free of errors. Together, no leakage.

There are through holes convenient for ventilation and drainage around the parting surface of the upper mold.

There are positioning columns 30 around the upper mold air frame 32, and positioning grooves are arranged around the middle air frame 14 to cooperate with the positioning columns on the upper mold air frame; the positioning columns on the upper mold air frame 32 30 and the positioning grooves on the middle air frame jointly constitute a positioning mechanism that plays a positioning role when the lost foam mold is closed.

With reference to Fig. 7, the upper end surface of the lower mold 16 is used as the parting surface of the lower mold, and the parting surface of the lower mold has a quick change of the lower mold for limiting the closed quick change movable block when the mold is closed. The loose block 21, the quick-change movable block 21 of the lower mold is four pieces located on the parting surface of the upper mold; There will be a gap of 12.5 mm between them. After the spring, the quick-change movable block 21 of the lower mold will move downward with the lower mold, so that the quick-change movable block 9 is separated from the quick-change movable block 21 of the lower mold. 3. It can drive the quick-change movable block 9 to move outward; a positioning groove needs to be made around the middle air frame sealing plate 15, and the quick-change movable block stopper 21 of the lower mold can limit the position of the quick-change movable block 9 through this positioning groove ; The side of lower mold 16 needs to make each 2 of lower mold nozzles 18; Need to make drainage and vent holes as much as possible on the middle air frame sealing plate 15.

There are breathable and water-permeable holes around the parting surface of the middle air frame 14,

The quick-change live block 9 has a mounting groove for a quick-change live block wear-resistant block 27, and the middle air frame sealing plate 15 has a mounting groove for installing the middle air frame sealing plate wear-resistant block 20; the described The fast-change live block wear-resistant block 27 is located in the installation groove described in the quick-change live block, and the height of the quick-change live block wear-resistant block 27 is higher than the height of the described installation groove of the quick-change live block; the middle air frame sealing plate The wear-resistant block 20 is positioned in the described mounting groove on the middle air frame sealing plate, and cooperates with the fast-changing live block wear-resistant block 27, in order to prevent the fast-changing live block from being large in frictional resistance with the middle air frame sealing plate.

The quick-change movable block 9 has a mounting groove for installing the wear-resistant block 27, and the middle air frame sealing plate 15 has a groove for matching with the wear-resistant block; the described wear-resistant block 27 is located at the In the groove described in the mounting groove described in block 9 and the middle air frame sealing plate 15, in order to prevent the frictional resistance of the fast changing loose block and the middle air frame sealing plate is large.

The four sides of the lower mold 16 have positioning grooves for installing spring mechanisms, and the two sides of the lower mold have drainage holes respectively.

Combined with Figure 8, the lower core live block guide mechanism 26 is installed on the lower die 16, the lower core live block pull rod 25 is installed on the lower die core live block 24, and the lower die core live block 24 needs to be installed on the lower die core live block On the guide mechanism 26; on the lower mold 16, exhaust and drainage holes should be made as much as possible; the connection between the lower mold core loose block pull rod 25 and the lower mold 16 should be connected through a guide sleeve, and an O-shaped sealing groove should be made on the guide sleeve , Install the O-ring; Make 2 limit files on the guide sleeve, the outermost and innermost two positioning points.

Working process of the present invention is:

The first step: first produce the motor casing horizontal frame 1 to a sufficient amount, and then start to produce the motor casing vertical frame 2;

The lost foam mold with the quick-change structure of the motor shell has been installed on the molding machine, start the molding machine, and the upper table of the molding machine drives the upper mold 12 to move upward to the uppermost end. The valve, cylinder 3 and cylinder plate 4 move outward to the outermost end to disengage from the guide rod 5. At this time, the guide rod 5 is rotated to pull out the guide rod, and then the quick-change live block 9 is taken out, and the spare quick-change live block 9 is placed on the The position of the original quick-change movable block 9, then insert the guide rod 5 into the guide sleeve 6 of the quick-change movable block and rotate it 90 degrees, then remove the air pipe on the air valve, so that the cylinder can move freely manually, and insert the cylinder plate 4 into the guide In the bar 5, lock the nut, then connect the trachea, debug the quick-change movable block 9, and a quick-change movable block is installed. Other 3 quick-change live blocks 9 are replaced in the same way. After all the blocks are changed, debug all quick change blocks 9;

Step 2: Debug the mold, adjust the opening and closing stroke of the vertical molding machine to the stroke suitable for the mold to open and take out the foam, and then press the mold tightly by the vertical molding machine to ensure that the mold opens and closes smoothly without jamming; adjust the filling Feeding time, hot steam pressure, cooling time;

Step 3: In the filling stage, when the mold is being filled with the automatic material gun 10, the upper mold 12 drives the upper mold core 28 to insert into the mold cavity after the quick change block 9 is closed. At this time, the middle air frame sealing plate 15 and A gap of 12.5mm is reserved between the lower molds, a gap of 6-8mm is reserved between the upper mold 12 and the middle air frame 14, and the upper mold core 28 and the lower mold core 19 are closely matched under the action of the spring and the screw 29, In this way, the mold cavity is 6-8mm larger, and it is easier to fill the mold cavity with material. Use the automatic material gun 1 to fill the pre-foamed foam particles into the mold cavity by negative pressure, that is, realize In order to pre-open the feeding, after the feeding is completed, the upper table of the molding machine drives the upper mold to move downward to compress the mold, so that all the reserved gaps are 0, and the upper mold, the middle air chamber and the lower mold are completely closed. During this process, the heat sink is partially For the unfilled parts, when the vertical molding machine drives the upper mold to move downward, fill the unfilled parts again to ensure that the foam particles are completely filled to the mold cavity, thereby ensuring the forming of the foam-like heat sink; and then Inject hot steam and maintain pressure until the foam material is fully expanded, matured, fused, and formed. Turn off the steam valve, feed cooling water, cool and shape, open the drain valve, drain the cooling water, open the upper and lower molds first, and complete the upper and lower molds. The mold core is separated from the foam of the motor shell. At this time, under the action of the spring structure 17, the quick-change live block stopper 21 of the lower mold moves downward, and the quick-change live block stopper 21 of the lower die moves to the quick-change live block. 9, the cylinder 3 drives the quick-change movable block 9 to move outward, so that the heat sink in the shape of motor shell foam is separated from the side core-pulling insert, and the demoulding of the heat sink is completed. The upper and lower molds are opened to the mold adjustment stroke, and then from The lower mold takes out the foam pattern and completes the mold opening action; when the mold is closed, the happy block 9 is closed first under the drive of the cylinder 3, and the upper and lower molds are closed again.

Claims (6)

1. a kind of motor casing evaporative pattern mold with mold insert quick change construction, described motor casing evaporative pattern mold include mould （12）With lower mould（16）；Described upper mould（12）Include upper mold core（28）, upper mould air frame（32）With upper molding plate（11）；It is described Upper mould air frame（32）Upper surface by upper molding plate（11）Closing；Described upper mold core（28）Pass through spring and screw（29）With Described upper mould air frame（32）Connection；It is characterized in that：Described motor casing evaporative pattern mold also includes middle gas chamber；It is described Middle gas chamber include middle air frame（14）, middle air frame shrouding（15）With quick change loose piece（9）；Described middle air frame（14） Lower surface by described middle air frame shrouding（15）Closing；The quick change loose piece（9）For four pieces to be uniformly distributed along the circumference, four pieces of institutes The quick change loose piece stated（9）Positioned at middle air frame（14）It is interior；Quick change loose piece described in corresponding four（9）It is respectively arranged with and changes planes soon Structure；Described quick-changing mechanism includes guide rod（5）, quick change guide pin bushing（6）And cylinder（3）；Described guide rod（5）For corresponding every piece of institute Four of the quick change loose piece setting stated；Four guide rods（5）One end be each passed through middle air frame by quick change guide pin bushing（6） With corresponding quick change loose piece（9）Connection；Described quick change guide pin bushing（6）With described quick change loose piece（9）Be connected by screw for One, form the quick change loose piece of demountable structure；Four guide rods（5）The other end respectively with the cylinder on the outside of middle air frame （3）Connection, makes the quick change loose piece described in four（9）In four cylinders（3）In the presence of, inwardly move closure and form mould type Chamber；Described lower mould（16）Including lower mold core（19）, lower mold core loose piece（24）With lower mould air frame；Described lower mold core（19）It is located at In described lower mould air frame, and corresponding described upper mold core（28）Set；Described lower mold core（19）There is short slot for periphery Cylinder；Described lower mold core loose piece（24）Positioned at lower mold core（19）In described short slot, corresponding described lower mold core loose piece （24）It is provided with the driving guiding mechanism for driving it to act；Described lower mold core loose piece（24）In the work of driving guiding mechanism Inwardly it is moved into lower in the short slot described in lower mold core, with described lower mold core（19）It is collectively forming to the electricity being molded The structure that casing is supported, and form described lower mold core loose piece and moved out in the presence of guiding mechanism is driven under disengaging Short slot described in core rod, it is easy to take out the structure of the white mould of motor casing；Described middle gas chamber passes through spring mechanism（17）With it is described Lower mould（16）Connection, makes described middle gas chamber can be in spring mechanism（17）In the presence of, separate realization with described lower mould Mold or be combined as a whole with described lower mould and realize matched moulds.

2. there is the motor casing evaporative pattern mold of mold insert quick change construction as claimed in claim 1, it is characterised in that：The upper mould （12）Lower surface have as upper mould die joint, on the upper mould die joint in matched moulds to the quick change loose piece after closure Carry out spacing upper mould quick change loose piece block（31）, described upper mould quick change loose piece block（31）For on upper mould die joint Four pieces.

3. there is the motor casing evaporative pattern mold of mold insert quick change construction as claimed in claim 1, it is characterised in that：The upper mould Core（28）Top surface there is locating slot, there is the upper mold core locating dowel matched somebody with somebody with the locating slot kiss in upper mold core on the upper mould；Institute The upper mold core stated（28）The not revolvable purpose of upper mold core is realized by the locating slot positioning in upper mould locating dowel and upper mold core.

4. there is the motor casing evaporative pattern mold of mold insert quick change construction as claimed in claim 1, it is characterised in that：The upper mould Air frame（32）Surrounding there is locating dowel（30）, the middle air frame（14）Surrounding have with it is possessed fixed in upper mould air frame The locating slot that position post coordinates；Upper mould air frame（32）Locating dowel possessed by upper（30）It is total to possessed locating slot in middle air frame It is same to be formed in the detent mechanism to be played the role of positioning during evaporative pattern mold matched moulds.

5. there is the motor casing evaporative pattern mold of mold insert quick change construction as claimed in claim 1, it is characterised in that：The lower mould （16）Upper surface have as lower mould die joint, on the lower mould die joint in matched moulds to the quick change loose piece after closure Carry out spacing lower mould quick change loose piece block（21）, described lower mould quick change loose piece block（21）For on upper mould die joint Four pieces；During die sinking, in spring mechanism（17）In the presence of, middle air frame（14）With lower mould（16）Between can flick it is certain between Gap, after flicking, lower mould quick change loose piece block（21）It can be moved down with lower mould, make quick change loose piece（9）Depart from lower mould quick change loose piece Block（21）, by cylinder（3）Quick change loose piece can be driven（9）It is displaced outwardly.

6. there is the motor casing evaporative pattern mold of mold insert quick change construction as claimed in claim 1, it is characterised in that：The quick change Loose piece（9）It is upper that there is quick change loose piece wear-resistant block（27）Mounting groove, described middle air frame shrouding 15 has installing centre Air frame shrouding wear-resistant block（20）Mounting groove；Described quick change loose piece wear-resistant block 27 is located at the mounting groove described in quick change loose piece, and Quick change loose piece wear-resistant block（27）The height higher than mounting groove described in quick change loose piece；Described middle air frame shrouding wear-resistant block（20） On middle air frame shrouding in described mounting groove, and with quick change loose piece wear-resistant block（27）Coordinate, in order to prevent quick change loose piece It is big with middle air frame shrouding frictional resistance.