CN215614987U - Positioning and guiding device for die and center positioning and guiding multi-cavity differential pressure die - Google Patents

Abstract

The utility model provides a positioning and guiding device for a mold, which comprises a guide rod and a positioning seat; the guide rod is provided with at least one boss, and one end of the boss is divergently arranged by taking the center of the guide rod as an end point; the positioning seat is provided with a matching groove matched with the boss. The center positioning and guiding multi-cavity differential pressure die comprises an upper die, a lower die and a positioning and guiding device for the die, wherein the positioning and guiding device for the die is arranged in the center of the multi-cavity differential pressure die. The matching structure of the positioning guide rod and the positioning seat enables the guide device to have three functions of centering, angle fixing and guiding when the upper die and the lower die of the differential pressure die are opened and closed, solves the problem of installation accuracy of a multi-cavity differential pressure die caused by inconsistent thermal expansion displacement of each die cavity, avoids dislocation when an upper die plate and a lower die plate are closed, and improves production efficiency; when the upper die and the lower die are opened to take out the casting, the local position of the casting is easily damaged, and the yield is improved; the abrasion of the positioning pin is reduced, and the maintenance cost is reduced.

Description

Positioning and guiding device for die and center positioning and guiding multi-cavity differential pressure die

Technical Field

The utility model relates to the field of dies, in particular to a positioning and guiding device for a die and a center positioning and guiding multi-cavity differential pressure die.

Background

At present, the use of one die and multiple cavities for the differential pressure casting molding of aluminum alloy automobile bogie parts is more and more common, the multi-cavity die is that a plurality of dies are arranged on one die frame, a plurality of parts are produced simultaneously, a plurality of die cavities are driven to open, close and take parts by a group of die frames, the auxiliary time for die production is greatly reduced, and the production efficiency is greatly improved. The most important consideration in the design of such molds is the fill balance. If the filling speed of each mold cavity cannot be effectively controlled, the phenomenon of overhigh pressure maintaining of some injection parts causes the future distortion and deformation of parts. The differential pressure forming process is a forming process for generating differential pressure on two sides of a sheet material, and can be a forming process by evacuating from the bottom of a mold, or introducing compressed air from the top of the sheet material, or both. The finished product is mainly characterized in that: the structure is more distinct, the fine part is the surface which is jointed with the mould surface, and the smoothness is higher.

Typically, multi-cavity, differential pressure molds require multiple mold cavities (typically 4, 6) to be disposed between the top and bottom mold plates of the mold. But the die cavities can not be uniformly arranged due to the influence of the shape of the casting and the size of the pressure barrel of the differential pressure machine. The temperature of each die cavity changes in a circulating way between 350 and 500 ℃ in the casting production process, and the temperatures of the die cavities are different when the dies are opened and closed, so that the temperatures of the die cavities are different, and the thermal expansion of the die cavities is different due to the temperature difference of the die cavities.

In the production process of the multi-cavity differential pressure die, the die opening and the die closing need to be positioned by positioning pins. The existing multi-cavity differential pressure die structure mainly depends on the occlusion positioning of each cavity die and the positioning pin positioning on the lower die.

Because the thermal expansion of each die cavity is different in size, the position is deviated and moved, and the following results are obtained:

(1) when the upper die and the lower die are assembled, the centering accuracy of the upper die plate and the lower die plate is insufficient, and the upper die plate and the lower die plate are interfered by the die cavity to be dislocated.

(2) When the upper die and the lower die are opened and the casting is taken out, the local position of the casting is easy to strain, the appearance of the product is influenced, the yield of the product is reduced, and the production cost is improved.

(3) Due to high-temperature expansion, the fit clearance between the positioning pin and the mold is reduced, so that the positioning pin is repeatedly rubbed with the mold during mold opening and closing, the mold or the positioning pin is abraded, the abrasion degree is different, and the positioning guide rod is broken or the molding of the positioning guide rod hole is damaged in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the present invention provides a positioning and guiding device for a mold and a multi-cavity differential pressure mold with center positioning and guiding, so as to achieve the purposes of easy positioning and reduced wear. The purpose of the utility model is realized by the following scheme:

a positioning guide device for a mold comprises a guide rod and a positioning seat;

the guide rod is provided with at least one boss, and one end of the boss is outwards diverged by taking the center of the guide rod as an end point;

the positioning seat is provided with a matching groove matched with the boss;

the boss end part is provided with a fillet and/or a conical surface, and the top of the matching groove is provided with a fillet.

Further, when the number of the bosses is more than or equal to two, the widths of the bosses are different.

Further, the taper of the conical surface is 7 degrees to 10 degrees.

Further, the height of the boss is 30mm to 80mm, and the rounded corners are R3mm to R5 mm.

Furthermore, when the number of the bosses is more than or equal to two, the bosses are uniformly distributed on the end surface of the guide rod by taking the center of the end surface of the guide rod as an end point.

Further, the number of the bosses is three, four or six.

Furthermore, when the number of the bosses is four, the bosses are arranged in a cross shape.

The utility model also provides a center positioning guide multi-cavity differential pressure die which comprises an upper die, a lower die and the positioning guide device for the die, wherein the positioning guide device for the die is arranged in the center of the upper die and the center of the lower die, and the positioning guide device for the die is any one of 1 to 7.

Further, the upper die is provided with an upper die plate, the guide rod is arranged in the center of the upper die plate, the lower die is provided with a lower die plate, and the positioning seat is arranged in the center of the lower die plate.

Furthermore, the bottom of the guide rod is provided with a plurality of through holes used for being connected with the upper die template, and the bottom of the positioning seat is provided with a plurality of through holes used for being connected with the lower die template.

Compared with the prior art, the utility model has the advantages that: the utility model provides a positioning and guiding device for a mold and a center positioning and guiding multi-cavity differential pressure mold. The matching structure of the positioning guide rod and the positioning seat enables the guide device to have three functions of centering, angle fixing and guiding when the upper die and the lower die of the differential pressure die are opened and closed, can well solve the problem of installation accuracy of a multi-cavity differential pressure die caused by inconsistent thermal expansion displacement of each die cavity, avoids dislocation of the upper die plate and the lower die plate when the die cavities are closed, and improves production efficiency; when the upper die and the lower die are opened to take out the casting, the local position of the casting is easily damaged, and the yield is improved; the abrasion of the positioning pin is reduced, and the maintenance cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic view of an overall structure of a positioning and guiding device for a mold according to an embodiment of the present invention;

FIG. 2 is a guide bar according to one embodiment of the present invention;

FIG. 3 is a positioning base according to an embodiment of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic diagram of the overall structure of a center-located pilot multi-cavity differential pressure die according to one embodiment of the present invention.

Fig. 6 is an overall structure view of the guide bar mounted on the upper mold according to one embodiment of the present invention.

Fig. 7 is a schematic view of an overall structure of the positioning base of the embodiment of the present invention mounted on a lower mold.

Wherein: 1. a guide bar; 11. a boss; 2. positioning seats; 21. a mating groove; 3. an upper die; 31. an upper die template; 4. a lower die; 41. and (5) a lower die template.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to the accompanying drawings 1 to 4, the utility model discloses a positioning and guiding device for a mold, which comprises a guide rod 1 and a positioning seat 2; the guide rod 1 is provided with at least one boss 11, and one end of the boss 11 is outwards diverged by taking the center of the guide rod 1 as an end point; the positioning seat 2 is provided with a matching groove 21 matched with the boss 11; the end parts of the bosses 11 are provided with fillets and/or conical surfaces, and the tops of the matching grooves 21 are provided with fillets. The taper of the conical surface is 7 degrees to 10 degrees. The height of the boss 11 is 30mm to 80mm, preferably 30mm to 50mm, but is not limited to the above-mentioned dimensions, and preferred data can be obtained by a specific mold and processing data. The rounded corners are R3 mm-R5 mm.

Specifically, when the number of the bosses 11 is greater than or equal to two, the widths of the bosses 11 are different from each other. The bosses 11 are uniformly distributed on the end surface of the guide rod 1 by taking the center of the end surface of the guide rod 1 as an end point.

Referring to fig. 5 to 7, the utility model also discloses a center positioning and guiding multi-cavity differential pressure die, which comprises an upper die 3, a lower die 4 and a positioning and guiding device for the die, wherein the positioning and guiding device for the die is arranged in the center of the multi-cavity differential pressure die. As shown in fig. 5, the upper die 3 is provided with an upper die plate 31, the guide rod 1 is arranged at the center of the upper die plate 31, the bottom of the guide rod 1 is provided with a plurality of through holes for connecting with the upper die plate 31, and after installation, as shown in fig. 6, the guide rod 1 is arranged at the axis position of the upper die 3. As shown in fig. 5, the lower die 4 is provided with a lower die plate 41, the positioning seat 2 is arranged at the center of the lower die plate 41, and the bottom of the positioning seat 2 is provided with a plurality of through holes for connecting with the lower die plate 41. As shown in fig. 6, the positioning base 2 is provided at the axial center of the lower die 4 after the mounting, and serves to reduce the displacement difference due to the difference in expansion dimension as much as possible.

The matching structure of the positioning guide rod and the positioning seat 2 enables the guide device to have three functions of centering, angle fixing and guiding when the upper die and the lower die of the differential pressure die are opened and closed, can well solve the problem of installation accuracy of a multi-cavity differential pressure die caused by inconsistent thermal expansion displacement of each die cavity, avoids dislocation of the upper die plate and the lower die plate when the die cavities are closed, and improves production efficiency; when the upper die and the lower die are opened to take out the casting, the local position of the casting is easily damaged, and the yield is improved; the abrasion of the positioning pin is reduced, and the maintenance cost is reduced.

Referring to fig. 1 to 7, in a first preferred embodiment of the present invention, when two bosses 11 are provided, one end of each boss 11 is disposed to be outwardly divergent with an end center of an end surface of the guide bar 1 as an end point; the arrangement mode is not limited to uniform distribution, and when the arrangement mode is uniform, the included angle between the two bosses 11 is 180 degrees, and the bosses are in a straight shape. When the two bosses 11 are unevenly distributed, an included angle is formed between the two bosses and is in a V shape. The matching groove 21 arranged on the positioning seat 2 is matched with the two bosses 11; 11 tip of boss all is equipped with the fillet and is provided with the conical surface, cooperation groove 21 top all is equipped with the fillet for guide bar 1 is leading-in more easily, even because the displacement that the difference in temperature leads to is poor, also can make guide bar 1 can lead-in cooperation groove 21 through the conical surface. The setting angle of the conical surface can be set by the displacement difference obtained by statistics in daily production, and is not limited to a specific taper. The main purpose is to facilitate the introduction of the guide bar 1 into the mating groove 21 to position the upper and lower dies of the multi-cavity differential pressure die. When the compound die, because the mould sets up the center at multicavity differential pressure mould with location guider for the multicavity differential pressure mould can pass through central positioning, wholly can further reduce the displacement difference of multimode chamber because of the difference in temperature, still reduced the mould wear rate and the foundry goods wear rate that open the mould closed simultaneously. Set up to "V style of calligraphy" for possessed the location angle, the installation of fixing a position rapidly when being convenient for install, the width of two sand grips that constitute "V style of calligraphy" can be the same, also can be different, preferably, selects different width, further promotes the effect that prevents the dress mistake, promotes the mistake proofing rate by a wide margin, thereby promotes production efficiency.

Referring to fig. 1 to 7, in a second preferred embodiment of the present invention, when three bosses 11 are provided, one end of each boss 11 is disposed to be outwardly divergent with an end center of an end surface of the guide bar 1 as an end point; the arrangement mode is not limited to uniform distribution, and when the arrangement mode is uniform, the included angle between the three bosses 11 is 120 degrees, and the three bosses are in a similar galloping car logo type. The matching groove 21 arranged on the positioning seat 2 is matched with the three bosses 11; 11 tip of boss all is equipped with the fillet and is provided with the conical surface, cooperation groove 21 top all is equipped with the fillet for guide bar 1 is leading-in more easily, even because the displacement that the difference in temperature leads to is poor, also can make guide bar 1 can lead-in cooperation groove 21 through the conical surface. The setting angle of the conical surface can be set by the displacement difference obtained by statistics in daily production, and is not limited to a specific taper. The main purpose is to facilitate the introduction of the guide bar 1 into the mating groove 21 to position the upper and lower dies of the multi-cavity differential pressure die. When the compound die, because the mould sets up the center at multicavity differential pressure mould with location guider for the multicavity differential pressure mould can pass through central positioning, wholly can further reduce the displacement difference of multimode chamber because of the difference in temperature, still reduced the mould wear rate and the foundry goods wear rate that open the mould closed simultaneously. Set up to class galloping car logo type for possessed location angle, the installation of fixing a position rapidly when being convenient for install, the width of three sand grips is different, and the effect that prevents the mistake installation is further promoted to the excellence, promotes the mistake proofing rate by a wide margin, thereby promotes production efficiency.

Referring to fig. 1 to 7, in a third preferred embodiment of the present invention, when the number of the bosses 11 is four, one end of each boss 11 is disposed to be outwardly divergent with the center of the end surface of the guide bar 1 as an end point; the arrangement mode is not limited to uniform distribution, and when the arrangement mode is uniform, the included angle between the four bosses 11 is 90 degrees, and the bosses are in a cross-like shape. The matching grooves 21 arranged on the positioning seat 2 are matched with the four bosses 11; the matching positions of the cross positioning guide rod arranged on the upper die 3 and the cross positioning seat arranged on the lower die 4 are uniformly distributed cross groove structures which take the center as the positioning, and the widths of the matching grooves 21 are different, so that the cross positioning rod of the upper die 3 is only fixed in the circumferential matching with the cross positioning seat of the lower die 4. 11 tip of boss all is equipped with the fillet and is provided with the conical surface, cooperation groove 21 top all is equipped with the fillet for guide bar 1 is leading-in more easily, even because the displacement that the difference in temperature leads to is poor, also can make guide bar 1 can lead-in cooperation groove 21 through the conical surface. The setting angle of the conical surface can be set by the displacement difference obtained by statistics in daily production, and is not limited to a specific taper. The main purpose is to facilitate the introduction of the guide bar 1 into the mating groove 21 to position the upper and lower dies of the multi-cavity differential pressure die. When the compound die, because the mould sets up the center at multicavity differential pressure mould with location guider for the multicavity differential pressure mould can pass through central positioning, wholly can further reduce the displacement difference of multimode chamber because of the difference in temperature, still reduced the mould wear rate and the foundry goods wear rate that open the mould closed simultaneously. Set up to "cross" type for possessed location angle, the installation of fixing a position rapidly when being convenient for install, the width of three sand grips is different, and the effect that prevents the error-proofing is further promoted to the excellence, promotes the mistake proofing rate by a wide margin, thereby promotes production efficiency. The matching structure of the cross positioning guide rod of the upper die 3 and the cross positioning seat of the lower die 4 enables the cross positioning guide device to have three functions of centering, angle fixing and guiding when the upper die and the lower die of the differential pressure die are opened and closed. The problem that a multi-cavity differential pressure die is affected by the fact that all die cavities are not consistent in thermal expansion displacement and the manufacturing and mounting precision is solved well, and the upper die plate and the lower die plate are prevented from being interfered and dislocated by the die cavity displacement difference.

Referring to fig. 1 to 7, in a fourth preferred embodiment of the present invention, when the number of the bosses 11 is six, one end of each boss 11 is disposed to be outwardly divergent with the center of the end surface of the guide rod 1 as an end point; the arrangement mode is not limited to uniform distribution, and when the arrangement mode is uniform, the included angle between the six bosses 11 is 60 degrees and is in a shape of Chinese character 'x'. The matching grooves 21 arranged on the positioning seat 2 are matched with the six bosses 11 and are also shaped like Chinese characters 'X'. 11 tip of boss all is equipped with the fillet and is provided with the conical surface, cooperation groove 21 top all is equipped with the fillet for guide bar 1 is leading-in more easily, even because the displacement that the difference in temperature leads to is poor, also can make guide bar 1 can lead-in cooperation groove 21 through the conical surface. The setting angle of the conical surface can be set by the displacement difference obtained by statistics in daily production, and is not limited to a specific taper. The main purpose is to facilitate the introduction of the guide bar 1 into the mating groove 21 to position the upper and lower dies of the multi-cavity differential pressure die. When the compound die, because the mould sets up the center at multicavity differential pressure mould with location guider for the multicavity differential pressure mould can pass through central positioning, wholly can further reduce the displacement difference of multimode chamber because of the difference in temperature, still reduced the mould wear rate and the foundry goods wear rate that open the mould closed simultaneously. Set up to "#" style for possessed the location angle, the installation of fixing a position rapidly when being convenient for, the width that constitutes two sand grips of "#" style can be the same, also can be different, preferably, selects different width, further promotes the effect that prevents the mistake proofing, promotes the mistake proofing rate by a wide margin, thereby promotes production efficiency.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the utility model. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are within the scope of the utility model.

Claims (10)

1. The utility model provides a mould is with location guider which characterized in that: comprises a guide rod and a positioning seat;

the guide rod is provided with at least one boss, and one end of the boss is outwards diverged by taking the center of the guide rod as an end point;

the positioning seat is provided with a matching groove matched with the boss;

the boss end part is provided with a fillet and/or a conical surface, and the top of the matching groove is provided with a fillet.

2. The positioning guide for a mold according to claim 1, wherein: when the number of the bosses is more than or equal to two, the widths of the bosses are different.

3. The positioning guide for a mold according to claim 1, wherein: the taper of the conical surface is 7 degrees to 10 degrees.

4. The positioning guide for a mold according to claim 1, wherein: the height of the boss is 30mm to 80mm, and the rounding angle is R3mm to R5 mm.

5. The positioning guide for a mold according to any one of claims 1 to 4, wherein: when the number of the bosses is more than or equal to two, the bosses are uniformly distributed on the end surface of the guide rod by taking the center of the end surface of the guide rod as an end point.

6. The positioning guide for a mold according to claim 5, wherein: the number of the bosses is three, four or six.

7. The positioning guide for a mold according to claim 6, wherein: when the number of the bosses is four, the bosses are arranged in a cross shape.

8. The utility model provides a center location direction multicavity differential pressure mould which characterized in that: the positioning and guiding device for the die comprises an upper die, a lower die and any one of the positioning and guiding devices 1-7, wherein the positioning and guiding device for the die is arranged in the centers of the upper die and the lower die.

9. The center-located, guided, multi-cavity differential pressure die of claim 8, wherein: the upper die is provided with an upper die template, the guide rod is arranged in the center of the upper die template, the lower die is provided with a lower die template, and the positioning seat is arranged in the center of the lower die template.

10. The center-located, guided, multi-cavity differential pressure die of claim 9, wherein: the bottom of the guide rod is provided with a plurality of through holes used for being connected with the upper die template, and the bottom of the positioning seat is provided with a plurality of through holes used for being connected with the lower die template.

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