CN215467889U

CN215467889U - Casting template of gear box casting

Info

Publication number: CN215467889U
Application number: CN202121888055.2U
Authority: CN
Inventors: 王立永; 苏小城; 孙鸣; 唐广铁; 余志田
Original assignee: Tianjin Changyi Industry Co ltd
Current assignee: Tianjin Changyi Industry Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-11
Anticipated expiration: 2031-08-12

Abstract

The utility model belongs to the technical field of casting mould and specifically relates to a casting template of gear box foundry goods is related to, including last template and lower template, it is provided with the third arch to go up the protrusion on the upper surface of template, the protrusion is provided with the apron down on the template, and the protrusion is provided with first arch and second arch on the apron, first chill has been placed in the first arch outside, and the second chill has been placed in the protruding outside of second, and the third chill has been placed in the protruding outside of third. When the lower die box is separated from the lower die plate, the first chilling block and the second chilling block can be left in the lower die box, and similarly, the third chilling block can be left in the upper die box, and in the later process of die assembly and casting forming of the casting, molten iron in the cavity for forming the first protrusion, the second protrusion and the third protrusion can accelerate heat conduction through the first chilling block, the second chilling block and the third chilling block in the die box, so that the cooling speed is increased, the cooling speed of each part of the casting is kept consistent, and the possibility of defects of the casting is reduced.

Description

Casting template of gear box casting

Technical Field

The application relates to the field of casting moulds, in particular to a casting template of a gear box casting.

Background

The mode that the present casting shaping adopted, at first the casting template of preparation work piece, according to the template open up the mould, be about to the diaphragm capsule place on the template, later to the intussuseption of diaphragm capsule intussuseption molding sand, diaphragm capsule and molding sand just have the die cavity identical with the casting template this moment. For a workpiece with a complex shape, the workpiece needs to be divided into two casting templates, two die boxes are formed, and then the two die boxes are matched to form a die cavity with the same shape as the workpiece.

The gear box comprises a box body and an end cover, as shown in fig. 1 and 2, the end cover comprises a cover plate 9, a first protrusion 91 and a second protrusion 92 are integrally arranged on one side of the cover plate 9, and a third protrusion 93 is integrally arranged on the other side of the cover plate 9.

In the process of forming the gearbox end cover, the thickness of the die cavity in which the first protrusion 91, the second protrusion 92 and the third protrusion 93 are located is larger than that of the cover plate 9, in the process of pouring molten iron into the die cavity, the cooling speed of the molten iron at the first protrusion 91, the second protrusion 92 and the third protrusion 93 is lower than that of the molten iron at the cover plate 9, and due to the fact that the cooling speeds are inconsistent, shrinkage rates of the molten iron in the cooling process are inconsistent, so that the defect that hollowness is generated at the connecting positions of the cover plate 9 and the first protrusion 91, the second protrusion 92 and the third protrusion 93 easily results in insufficient structural strength.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that defects are easily generated in the forming process of a gear box casting, the application aims to provide a casting template of the gear box casting.

The application provides a casting template of gear box foundry goods adopts following technical scheme:

the utility model provides a casting template of gear box foundry goods, includes template and lower template, it is provided with the third arch to go up the protrusion on the upper surface of template, the protrusion is provided with the apron down on the template, and the protrusion is provided with first arch and second arch on the apron, first chill has been placed in the first arch outside, and the second chill has been placed in the protruding outside of second, and the third chill has been placed in the protruding outside of third.

Through adopting above-mentioned technical scheme, utilize the in-process of template and lower template shaping diaphragm capsule, first chill and second chill can be buried underground in the molding sand in the lower diaphragm capsule, when lower diaphragm capsule breaks away from with lower template, first chill and second chill can stay in the lower diaphragm capsule, the same thing, the third chill can stay in the cope match-plate pattern, the in-process of compound die casting shaping foundry goods afterwards, the first arch of shaping, the molten iron of the protruding die cavity department of second and third can pass through the first chill in the diaphragm capsule, second chill and third chill are heat-conduction with higher speed, thereby promote cooling rate, make each position cooling rate of foundry goods keep unanimous, thereby reduce the possibility that the foundry goods produced the defect.

Preferably, the first chiller is as wide as the first protrusion, the second chiller is as wide as the second protrusion, and the third chiller is as wide as the third protrusion.

Through adopting above-mentioned technical scheme, the molten iron of the bellied die cavity department of first arch of shaping, second arch and third can fully contact with first chill, second chill and third chill, promotes hot-conducting efficiency.

Preferably, the first chiller and the second chiller are formed by splicing two or more chills.

Through adopting above-mentioned technical scheme, can reduce the processing degree of difficulty of first chill and second chill, reduce cost to structural strength is higher.

Preferably, magnets are embedded in the first protrusion, the second protrusion and the third protrusion.

Through adopting above-mentioned technical scheme, first chill, second chill and third chill can adsorb on the magnetite to guarantee that first chill, second chill and third chill place the stability on first arch, second arch and third arch, also can break away from template or lower template along with the diaphragm capsule simultaneously.

Preferably, the protrusion is provided with the first casting structure that is used for the shaping sprue on the upper template, and the protrusion is provided with the second casting structure that is used for the shaping sprue on the lower template, the second casting structure includes first runner formed part and second runner formed part, and first runner formed part is located the both sides of apron, the both ends of second runner formed part respectively with apron and first runner formed part integrated connection.

By adopting the technical scheme, the first flow channel forming piece and the second flow channel forming piece are used for forming the first flow channel and the second flow channel, after molten iron enters the first flow channel, the molten iron can slowly enter the second flow channel from the first flow channel, and then enters the die cavity of a forming workpiece through the second flow channel, so that the molten iron entering the die cavity can stably flow, and the forming quality of a casting is improved.

Preferably, the first casting structure comprises a third flow passage formation, the position of the third flow passage formation corresponding to the position of the first flow passage formation.

By adopting the technical scheme, after the upper die box formed by the upper die plate is formed, the third flow channel forming part can be used for forming the third flow channel, the third flow channel is superposed with the first flow channel formed on the lower die box after the third flow channel and the first flow channel are matched, the flow resistance of the molten iron in the first flow channel and the third flow channel is small, and the smooth degree of the molten iron entering the second flow channel is higher.

Preferably, the first casting structure further comprises a fourth flow channel molding part, the fourth flow channel molding part is located at the end part of the upper shaping plate, the third flow channel molding parts are located at two sides of the fourth flow channel molding part, and the third flow channel molding part and the fourth flow channel molding part are arranged at intervals; the second casting structure further comprises a fifth flow channel forming part, and the position of the fifth flow channel forming part on the lower template corresponds to the position between the third flow channel forming part and the fourth flow channel forming part on the upper template.

By adopting the technical scheme, after the upper die box and the lower die box are assembled, the molten iron entering the fourth runner can enter the fifth runner, then flows into the runner formed by combining the first runner and the third runner from the fifth runner, and finally flows through the second runner to enter the die cavity formed by the casting.

Preferably, the four corners of the upper shaping plate are provided with positioning grooves, the four corners of the lower shaping plate are provided with positioning protrusions, and the positioning protrusions can be mutually inserted and matched with the positioning grooves.

Through adopting above-mentioned technical scheme, go up the mould box and the lower mould box shaping back, utilize positioning groove and the protruding fashioned position in location, can cooperate mutually at the in-process of last mould box and lower mould box compound die, guarantee the compound die after, go up the alignment that mould box and lower mould box can be regular, be convenient for fix a position.

In summary, the present application has the following technical effects:

1. the first chill, the second chill and the third chill are arranged at the first bulge, the second bulge and the third bulge on the upper template and the lower template, so that the cooling speed of the molten iron at the first bulge, the second bulge and the third bulge is accelerated in the forming process, and the effect of improving the quality of castings is achieved;

2. the magnets are embedded in the first protrusions, the second protrusions and the third protrusions, and the effect of improving the placing stability of the first chiller, the second chiller and the third chiller is achieved.

Drawings

FIG. 1 is a schematic view showing the structure of one side of the protruded casting in the present embodiment.

Fig. 2 is a schematic view of the structure of the other side of the protruded casting in the present embodiment.

Fig. 3 is a schematic structural view of the lower plate in this embodiment.

Fig. 4 is a schematic structural view of the upper board in this embodiment.

Description of reference numerals: 1. an upper template; 11. a positioning groove; 2. a lower template; 21. positioning the projection; 31. a first chill; 32. a second chill; 33. a third chilling block; 4. a first cast structure; 41. a third flow channel molding; 42. a fourth flow channel molding member; 5. a second cast structure; 51. a first flow channel formation; 52. a second flow channel formation; 53. a fifth flow channel molding member; 9. a cover plate; 91. a first protrusion; 92. a second protrusion; 93. and a third protrusion.

Detailed Description

As shown in fig. 1 and 2, the present embodiment describes a casting template of a gear box casting, which includes an upper template 1 and a lower template 2, wherein the upper template 1 and the lower template 2 are integrally provided with a forming body having the same shape as the outer surface of the casting, and for easy understanding, the present embodiment names of the forming bodies arranged on the upper template 1 and the lower template 2, which correspond to the casting, are named in the same way, which is more intuitive. Specifically, in the present embodiment, a cover plate 9 is convexly disposed on the lower mold plate 2, a first protrusion 91 and a second protrusion 92 are convexly disposed on the cover plate 9, and a third protrusion 93 is convexly disposed on the upper surface of the upper mold plate 1. And (3) forming an upper die box and a lower die box by utilizing the upper template 1 and the lower template 2 after die expanding, then closing the upper die box and the lower die box, pouring molten iron into the die box, allowing the molten iron to enter a cavity, and cooling to form a workpiece.

As shown in fig. 3 and 4, in order to increase the cooling speed at the first projection 91, the second projection 92 and the third projection 93 on the casting during the process of forming the workpiece and keep the cooling speed approximately consistent with the cooling speed at the cover plate 9, a first chiller 31, a second chiller 32 and a third chiller 33 can be correspondingly placed above the first projection 91, the second projection 92 and the third projection 93 of the upper template 1 and the lower template 2 in sequence. Thus, in the process of molding the upper and lower mold boxes by using the upper and lower mold plates 1 and 2, the first and

second chills

31 and 32 can be embedded in the molding sand of the lower mold box, and the third chill 33 can be embedded in the molding sand of the upper mold box, after the upper and lower mold boxes are closed, after molten iron is poured into the cavity of the mold box, the molten iron can be in direct contact with the first, second, and

third chills

31, 32, and 33 in the upper and lower mold boxes, because the heat conduction speed of the chills is much greater than the heat conduction speed of the molding sand, in the process of molding a casting, the molten iron of the casting at the first, second, and

third protrusions

91, 92, and 93 can rapidly conduct and dissipate heat into the molding sand in the mold box through the first, second, and

third chills

31, 32, and 33, so as to increase the cooling speed of the molten iron at the first, second, and

third protrusions

91, 92, 93, the difference between the cooling speed and the cooling speed of the molten iron at the cover plate 9 is ensured to be not large, so that the shrinkage rate of each part of the casting is ensured to be equivalent, and the molding quality of the casting is better.

Go up first protruding 91 on template 1 and the lower template 2, the embedded magnetite that is equipped with of second arch 92 and third arch 93, first chill 31, second chill 32 and third chill 33 can adsorb on the magnetite to guarantee first chill 31, second chill 32 and third chill 33 and place the stability on first protruding 91, the protruding 92 of second and third arch 93, also can break away from upper template 1 or lower template 2 along with the diaphragm capsule simultaneously.

The chilling block can be set to be an independent integral structure, and also can be a mode of splicing two or more chilling blocks, and the specific setting mode is according to the specific shape of the chilling block, if the shape rule is simple, then the integral structure is adopted to save the machining process, if the shape rule is changeable, then the structure of splicing type is adopted, and the machining difficulty is reduced. Meanwhile, the setting width of the chiller also has an influence on the cooling speed of the casting. As shown in fig. 3 and 4, in the present embodiment, since the third protrusion 93 has a simple structure and is annular, the third chiller 33 is arranged in an integral structure; the structural shapes of the first protrusion 91 and the second protrusion 92 are irregular, and the area enclosed by the whole structure is large, so that the first chiller 31 and the second chiller 32 are arranged in a split splicing structure, and the structural strength of a single chiller can be improved. Meanwhile, the width of the first chiller 31 is consistent with that of the first protrusion 91, the width of the second chiller 32 is consistent with that of the second protrusion 92, and the width of the third chiller 33 is consistent with that of the third protrusion 93, so that molten iron entering the cavities of the first protrusion 91, the second protrusion 92 and the third protrusion 93 can be fully contacted with the first chiller 31, the second chiller 32 and the third chiller 33, and the heat conduction efficiency is improved.

In order to guarantee that molten iron can flow to the die cavity of diaphragm capsule comparatively gently, need set up the sprue in the diaphragm capsule, after molten iron passes through the sprue and gets into the die cavity, can guarantee the stationarity that the molten iron flows, the shaping of sprue still need rely on the structure on template 1 and the lower template 2.

As shown in fig. 3 and 4, a first casting structure 4 for forming a casting channel is protrusively provided on the upper molding plate 1, and a second casting structure 5 for forming a casting channel is protrusively provided on the lower molding plate 2. The first casting structure 4 comprises a third flow channel forming part 41 and a fourth flow channel forming part 42, the second casting structure 5 comprises a first flow channel forming part 51, a second flow channel forming part 52 and a fifth flow channel forming part 53, the first flow channel forming part 51 is located on two sides of the cover plate 9, two ends of the second flow channel forming part 52 are respectively connected with the cover plate 9 and the first flow channel forming part 51 integrally, the fourth flow channel forming part 42 is located at the end of the upper template 1, the third flow channel forming part 41 is located on two sides of the fourth flow channel forming part 42, and the third flow channel forming part 41 and the fourth flow channel forming part 42 are arranged at intervals. The position of the third flow channel forming member 41 on the upper template 1 corresponds to the position of the first flow channel forming member 51 on the lower template 2, and the position of the fifth flow channel forming member 53 on the lower template 1 corresponds to the position between the third flow channel forming member 41 and the fourth flow channel forming member 42 on the upper template 1. At this time, the third flow channel molding member 41 and the fourth flow channel molding member 42 on the upper die 1 are used to mold the third flow channel and the fourth flow channel on the upper die box, the first flow channel molding member 51, the second flow channel molding member 52 and the fifth flow channel molding member 53 on the lower die 2 are used to mold the first flow channel, the second flow channel and the fifth flow channel on the lower die box, after the upper die box and the lower die box are assembled, the first flow channel and the third flow channel are overlapped to widen a flow channel of molten iron, the fourth flow channel is communicated with the third flow channel through the fifth flow channel and is vertically staggered, at the moment, the molten iron flows in from the fourth flow channel, then enters the fifth flow channel and then enters the third flow channel and the first flow channel, and after passing through the vertically staggered fourth flow channel, the fifth flow channel and the third flow channel, the molten iron can greatly reduce fluctuation of molten iron flow, guarantee that the molten iron can stably flow, and finally flows into a cavity of the die box from the second flow channel.

The positioning accuracy between the upper die box and the lower die box directly influences the shape of casting molding. As shown in fig. 3 and 4, in order to ensure that the upper mold box and the lower mold box can be quickly positioned and then accurately closed, the four corners of the upper mold plate 1 can be provided with positioning grooves 11, the four corners of the lower mold plate 2 can be provided with positioning protrusions 21, the positioning protrusions 21 can be mutually inserted into the positioning grooves 11, at the moment, the upper mold box can be provided with protrusions with the same shape as the positioning grooves 11 after being molded, the lower mold box can be provided with grooves with the same shape as the positioning protrusions 21 after being molded, and after closing the mold, the protrusions on the upper mold box and the grooves on the lower mold box can be quickly matched to complete positioning and ensure the precision of matching.

The using process of the embodiment is as follows:

first, first chill 31 is placed above a first protrusion 91, second chill 32 is placed above a second protrusion 92, third chill 33 is placed above a third protrusion 93, then an upper mold box is placed above an upper mold plate 1, a lower mold box is placed above a lower mold plate 2, sand mold is filled in the upper mold box and the lower mold box and compacted, after the upper mold box and the lower mold box are separated from the upper mold plate 1 and the lower mold plate 2, the first chill 31 and the second chill 32 can be embedded in the lower mold box, the third chill 33 can be embedded in the upper mold box, after the upper mold box and the lower mold box are closed, molten iron poured into a mold cavity of the mold box can cool castings through the first chill 31, the second chill 32 and the third chill 33, the cooling speed of all parts of the castings is guaranteed to be approximately the same, and therefore the forming quality of the castings is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a casting template of gear box foundry goods, includes template (1) and lower template (2), it is provided with third arch (93) to go up the protrusion on the upper surface of template (1), the protrusion is provided with apron (9) down on template (2), and the protrusion is provided with first arch (91) and protruding (92) of second on apron (9), its characterized in that, first chill (31) have been placed in first arch (91) outside, and second chill (32) have been placed in the protruding (92) outside of second, and third chill (33) have been placed in the protruding outside of third.

2. Casting template for gear box castings according to claim 1, characterized in that the first chills (31) correspond to the width of the first protrusions (91), the second chills (32) correspond to the width of the second protrusions (92), and the third chills (33) correspond to the width of the third protrusions (93).

3. The cast slab of a gearbox casting according to claim 2, characterized in that the first chiller (31) and the second chiller (32) are formed by splicing two or more chills.

4. Casting template for a gearbox casting according to claim 3, characterised in that magnets are embedded in the first (91), second (92) and third (93) protrusions.

5. Casting profile of a gearbox casting according to claim 1, characterized in that a first casting structure (4) for forming a casting channel is arranged on the upper profile (1) in a protruding manner, a second casting structure (5) for forming a casting channel is arranged on the lower profile (2) in a protruding manner, the second casting structure (5) comprises a first flow channel forming part (51) and a second flow channel forming part (52), the first flow channel forming part (51) is located on both sides of the cover plate (9), and both ends of the second flow channel forming part (52) are respectively connected with the cover plate (9) and the first flow channel forming part (51) in an integrated manner.

6. Cast profile for a gearbox casting according to claim 5, characterised in that the first casting structure (4) comprises a third flow channel formation (41), the position of the third flow channel formation (41) corresponding to the position of the first flow channel formation (51).

7. Casting template of a gearbox casting according to claim 6, characterized in that the first casting structure (4) further comprises a fourth flow channel profile (42), the fourth flow channel profile (42) is located at the end of the upper template (1), the third flow channel profiles (41) are located on both sides of the fourth flow channel profile (42), and the third flow channel profiles (41) and the fourth flow channel profiles (42) are spaced apart; the second casting structure (5) further comprises a fifth flow channel forming part (53), and the position of the fifth flow channel forming part (53) on the lower template (1) corresponds to the position between the third flow channel forming part (41) and the fourth flow channel forming part (42) on the upper template (1).

8. The casting template of the gearbox casting according to any one of claims 1 to 7, wherein the four corners of the upper template (1) are provided with positioning grooves (11), the four corners of the lower template (2) are provided with positioning protrusions (21), and the positioning protrusions (21) can be mutually inserted and matched with the positioning grooves (11).