CN216937986U

CN216937986U - Mandrel base

Info

Publication number: CN216937986U
Application number: CN202123195215.8U
Authority: CN
Inventors: 王健伟; 简俊超; 张彬
Original assignee: Guangdong Nbtm New Materials Co ltd
Current assignee: Guangdong Nbtm New Materials Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-12
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to the technical field of die parts and discloses a mandrel holder, which comprises: the pressing sleeve is provided with a mounting hole for mounting the core rod along the axial direction, the gland is provided with a first connecting hole matched with the pressing sleeve, the gland can be arranged at the periphery of the pressing sleeve through the first connecting hole, the inner wall of the first connecting hole is also provided with a resisting part for fixing the pressing sleeve, when the core rod seat is mounted, the core rod is mounted on the pressing sleeve, the pressing sleeve is arranged on the pressing sleeve in a sleeved mode, the gland is pre-tightened on a die firstly, then the pressing sleeve is rotated to adjust the core rod to a correct position, then the gland is fastened on the die through a fastening piece, and meanwhile, the pressing sleeve can be fixed through the resisting part. The mandrel holder provided by the utility model can effectively improve the fault tolerance rate and efficiency of mounting the mandrel holder.

Description

Mandrel base

Technical Field

The utility model relates to the technical field of die parts, in particular to a mandrel holder.

Background

The mould passes through mandrel holder installation plug, and in prior art, the mandrel holder includes the gland, and the gland is equipped with the mounting hole that is used for installing the plug, and the plug is installed in the mounting hole, again with gland fixed mounting in the mould, and after the gland was installed on the mould, just can't adjust the position of plug, consequently, when the position of plug was wrong, need pull down the gland and reinstall, comparatively inconvenient to waste time.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the mandrel base, which can adjust the position of the mandrel when the gland is installed on the die, so that the installation process is simple and convenient, and the installation efficiency is improved.

According to an embodiment of the utility model, the mandrel holder comprises: the pressing sleeve is provided with an installation hole for installing the core rod along the axial direction;

the pressing cover is provided with a first connecting hole matched with the pressing sleeve, the pressing cover is sleeved on the periphery of the pressing sleeve through the first connecting hole, and the inner wall of the first connecting hole is provided with a resisting part for fixing the pressing sleeve;

wherein the press sleeve is rotatable relative to the gland to adjust the position of the mandrel.

The mandrel base provided by the embodiment of the utility model has at least the following beneficial effects: the mandrel seat comprises a pressing sleeve and a pressing cover, the pressing sleeve is provided with a mounting hole for mounting a mandrel, the pressing cover is provided with a first connecting hole matched with the pressing sleeve, a resisting part is arranged on the inner wall of the first connecting hole, the pressing sleeve can be arranged on the pressing cover through the first connecting hole, the mandrel is mounted on the pressing sleeve when the mandrel seat is mounted, the pressing sleeve is arranged on the pressing sleeve through the pressing sleeve, the pressing cover is pre-tightened on a die firstly, the pressing sleeve is rotated to adjust the mandrel to a correct position, then the pressing cover is fastened on the die through a fastening piece, and meanwhile, the pressing sleeve can be fixed through the resisting part. The mandrel holder provided by the utility model can effectively improve the fault tolerance rate and efficiency of mounting the mandrel holder.

According to some embodiments of the utility model, the pressing sleeve is provided with a receiving portion, and the abutting portion can abut against the receiving portion to fix the pressing sleeve. When the gland is fixedly arranged on the die, the resisting part is abutted against the bearing part, so that the gland can fix the pressing sleeve on the die.

According to some embodiments of the utility model, the mounting hole includes a first through hole provided at a center of the pressing sleeve and a second through hole provided at an outer periphery of the first through hole. The first through hole can be used for installing a main core rod, and the second through hole can be used for installing a core rod with a smaller diameter.

According to some embodiments of the utility model, the second through hole is provided in plurality, and the plurality of second through holes are provided at intervals along the outer periphery of the first through hole. And a plurality of second through holes are arranged, so that a plurality of core rods can be installed to meet the installation requirement of equipment.

According to some embodiments of the utility model, the second through hole is provided with an escape portion at an end of the second through hole close to the mold. The thicker end of the core rod can be completely embedded in the second through hole by arranging the avoiding part, so that the gland can stably fix the pressing sleeve on the die.

According to some embodiments of the utility model, the press sleeve is provided with a boss, and the mounting hole is provided in the boss. Through setting up the boss, make the portion of keeping out can play limiting displacement to the boss to can improve the stability of pressing the cover in the gland.

According to some embodiments of the utility model, the inner wall of the first connection hole is provided with an annular protrusion arranged towards the center line of the first connection hole, the protrusion constitutes the resisting part, and the inner diameter of the protrusion is matched with the diameter of the boss. The bulge can play a limiting role in the boss, so that the stability of the pressing sleeve in the pressing cover can be improved.

According to some embodiments of the utility model, a length of the projection in the axial direction is greater than or equal to a length of the boss in the axial direction. The axial length of the bulge is greater than or equal to the axial length of the boss, so that the boss cannot exceed the end face of the gland, and the mounting stability is ensured.

According to some embodiments of the utility model, the gland is further provided with a plurality of second connecting holes, and the plurality of second connecting holes are uniformly distributed along the circumferential direction of the gland. The gland can be pre-tightened by the bolt, and then the gland is fixedly arranged on the die.

According to some embodiments of the utility model, the second connecting hole is provided with a countersunk head portion at an end of the second connecting hole remote from the mold. Through setting up heavy head portion can be with the bolt head embedding heavy head portion, make the terminal surface of gland level and smooth to other spare parts of follow-up installation.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a mandrel base according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a press sleeve according to an embodiment of the present invention;

FIG. 3 is a top view of a press sleeve according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view of a press sleeve according to one embodiment of the present invention;

FIG. 5 is a schematic structural view of a gland in accordance with one embodiment of the present invention;

FIG. 6 is a top view of a gland in accordance with one embodiment of the present invention;

figure 7 is a cross-sectional view of a gland in accordance with one embodiment of the present invention.

Reference numerals:

the pressing sleeve 100, the mounting hole 110, the first through hole 111, the second through hole 112, the avoiding part 1121, the boss 120 and the bearing part 130;

the pressing cover 200, the first connection hole 210, the resisting part 220, the second connection hole 230, and the countersunk part 231;

a mandrel 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The embodiments of the present application will be further explained with reference to the drawings.

Referring to fig. 1, in some embodiments of the present invention, a mandrel holder includes a press sleeve 100 and a gland 200, the press sleeve 100 is provided in a cylindrical shape and is provided with a mounting hole 110 for mounting a mandrel 300 along an axial direction of the press sleeve 100, the gland 200 is provided with a first connection hole 210 matching the press sleeve 100 along the axial direction, that is, an inner diameter of the first connection hole 210 matches an outer diameter of the press sleeve 100 so that the gland 200 can be sleeved on an outer circumference of the press sleeve 100 through the first connection hole 210, and an inner wall of the first connection hole 210 is further provided with a stopper 220 for fixing the press sleeve 100. When the mandrel holder is installed, the pressing cover 200 is sleeved on the periphery of the pressing sleeve 100, the pressing cover 200 is pre-tightened on the mold, then the pressing sleeve 100 is rotated to adjust the mandrel 300 to a correct position, then the pressing cover 200 is fastened on the mold, and meanwhile the stopping part 220 can fix the pressing sleeve 100, so that the pressing sleeve 100 is fixed on the mold. For example, when the mandrel holder is mounted to the press die, one end of the mandrel 300 needs to be inserted into a hole provided in the corresponding punch, and therefore, the mandrel 300 can be quickly adjusted to the correct position by rotating the pressing sleeve 100. Through the technical scheme provided by the utility model, the installation process of the mandrel base is simpler and more convenient, the error rate in the installation of the mandrel base is reduced, and the installation efficiency can be effectively improved.

It should be noted that the inner diameter and the cross-sectional shape of the mounting hole 110 are determined according to the size and shape of the mandrel 300. For example, the mandrel 300 has a cylindrical shape, the cross section of the mounting hole 110 is set to be circular, and the inner diameter of the mounting hole 110 matches the diameter of the mandrel 300. Of course, the mandrel 300 may have other shapes, and the inner diameter and the cross-sectional shape of the installation hole 110 may be determined according to specific situations, and are not particularly limited herein.

Referring to fig. 2 to 4, in some embodiments of the present invention, the mounting hole 110 includes a first through hole 111 and a second through hole 112, the first through hole 111 is provided at a central position of the press sleeve 100, and the second through hole 112 is provided at an outer periphery of the first through hole 111. The inner diameter of the first through hole 111 is larger than the inner diameter of the second through hole 112, the main mandrel having a larger diameter is inserted into the first through hole 111, and the second through hole 112 is used for mounting the mandrel 300 having a smaller diameter. Of course, the inner diameters of the first through hole 111 and the second through hole 112 may be changed according to specific situations, and are not limited in particular.

In some embodiments of the present invention, the second through hole 112 is provided in plurality, and the plurality of second through holes 112 are spaced along the outer circumference of the first through hole 111. It should be noted that the second through holes 112 may be uniformly distributed on the outer periphery of the first through hole 111, or may be randomly distributed on the outer periphery of the first through hole 111, and the position of each second through hole 112 may be determined according to specific situations, and of course, the inner diameter of each second through hole 112 may be the same or different, and may be determined according to the structure of the mandrel 300 to be installed.

The shape of the cross section of the second through hole 112 matches the structure of the mandrel 300, in some embodiments of the present invention, the second through hole 112 is provided with an avoiding portion 1121, the avoiding portion 1121 is located at one end of the second through hole 112 close to the die, the inner diameter of the avoiding portion 1121 is larger, the diameter and the shape of the cross section of the avoiding portion 1121 can match according to the diameter and the shape of the thicker end of the mandrel 300, the thinner end of the mandrel 300 passes through the second through hole 112 from the avoiding portion 1121, and the thicker end of the mandrel 300 can be inserted into the avoiding portion 1121 and clamped to the avoiding portion 1121. Therefore, by providing the relief portion 1121, the mandrel bar 300 can be caught in the mounting hole 110, and the end surface of the press sleeve 100 in contact with the die can be kept flat, thereby improving the stability of the press sleeve 100. In addition, since one end of the sleeve 100 is in contact with the mold and the other end is the receiving portion 130 and is in contact with the abutting portion 220 of the gland 200 when the mandrel holder is attached, the sleeve 100 can be fixed to the mold at the same time when the gland 200 is fastened to the mold. Of course, the avoidance portion 1121 may be formed in various shapes, such as a cylindrical shape or a groove shape, and it is sufficient that the thicker end of the mandrel 300 can be inserted into the avoidance portion 1121 and caught by the avoidance portion 1121, and the mandrel 300 can be kept stable.

In some embodiments of the present invention, the pressing sleeve 100 is provided with a boss 120, and the mounting hole 110 is provided in the boss 120. The inner wall of the first connection hole 210 is provided with an annular protrusion facing the center line of the first connection hole 210, the annular protrusion forms a resisting portion 220, the thicker end of the press sleeve 100 forms a bearing portion 130, and the resisting portion 220 can abut against the bearing portion 130 to fix the press sleeve 100 to the mold. Of course, an appropriate area may be selected from the outer periphery of the end of the pressing sleeve 100 away from the mold as the receiving portion 130.

It should be noted that, the inner diameter of the protrusion matches with the diameter of the boss 120, so that when the pressing sleeve 100 is disposed in the first connecting hole 210, the resisting portion 220 can limit the axial movement of the pressing sleeve 100, so that the pressing sleeve 100 is more stable. It should be noted that the axial length of the abutting portion 220 is greater than or equal to the axial length of the boss 120, so that the boss 120 does not extend beyond the end face of the gland 200, thereby facilitating the installation and connection of other components. When the axial length of the abutting portion 220 is equal to the axial length of the boss 120, the end surface of the boss 120 can be flush with the end surface of the gland 200.

Referring to fig. 5 to 7, in some embodiments of the present invention, the gland 200 is further provided with a plurality of second coupling holes 230, the plurality of second coupling holes 230 are uniformly distributed along a circumferential direction of the gland 200, and the gland 200 is fixedly mounted to the mold by a fastener passing through the second coupling holes. The plurality of second coupling holes 230 are uniformly distributed along the circumferential direction of the gland 200, so that the stress of the gland 200 can be uniform, and the stability of the installation of the gland 200 can be improved. The core rod 300 is installed in the second through hole 112, the pressing cover 200 is sleeved on the periphery of the pressing sleeve 100, the pressing cover 200 is pre-tightened on the mold through the fastener, then the pressing sleeve 100 is rotated, so that the core rod 300 is driven to rotate, the position of the core rod 300 is adjusted until the core rod 300 rotates to the correct position, the pressing cover 200 is fastened on the mold through the fastener, meanwhile, the abutting part 220 arranged on the pressing cover 200 abuts against the bearing part 130 of the pressing sleeve 100, and one end, far away from the abutting part 220, of the pressing sleeve 100 abuts against the mold, so that the pressing sleeve 100 can be fixed.

The fastener may be a bolt, a screw, or the like. It should be noted that the second connecting hole may be a screw hole, and the mold may be provided with the same screw hole, and the gland may be fixed to the mold by screwing a fastener such as a bolt into the screw hole. Of course, the second connecting hole may be a hole having no thread on the inner wall, a fastener such as a bolt is inserted into the second connecting hole, and a screw hole is formed in the mold, and the bolt is screwed into the screw hole, so that the gland is fixed to the mold.

In some embodiments of the present invention, the second connecting hole 230 is provided with a countersunk head portion 231, the countersunk head portion 231 is located at an end of the second connecting hole 230 away from the mold, and a head of the fastener can be embedded into the countersunk head portion 231, for example, a bolt can be used as the fastener, and a bolt head can be embedded into the countersunk head portion 231, so that flatness of an end surface of the gland 200 can be ensured, and other parts can be mounted later.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications and substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are to be included in the scope of the present invention defined by the appended claims.

Claims

1. A mandrel base, comprising:

a pressing sleeve (100) which is provided with an installation hole (110) for installing the core rod (300) along the axial direction;

the pressing cover (200) is provided with a first connecting hole (210) matched with the pressing sleeve (100), the pressing cover (200) is sleeved on the periphery of the pressing sleeve (100) through the first connecting hole (210), and the inner wall of the first connecting hole (210) is provided with a resisting part (220) used for fixing the pressing sleeve (100);

wherein the press sleeve (100) is rotatable relative to the gland (200) to adjust the position of the mandrel (300).

2. The mandrel holder according to claim 1 wherein said press sleeve (100) is provided with a receiving portion (130), said abutting portion (220) being capable of abutting against said receiving portion (130) to fix said press sleeve (100).

3. The mandrel holder according to claim 1, wherein the mounting hole (110) comprises a first through hole (111) and a second through hole (112), the first through hole (111) is provided at the center of the pressing sleeve (100), and the second through hole (112) is provided at the outer periphery of the first through hole (111).

4. The mandrel holder according to claim 3 wherein said second through holes (112) are provided in plurality, and a plurality of said second through holes (112) are provided at intervals along the outer circumference of said first through hole (111).

5. The mandrel holder according to claim 3 wherein the second through hole (112) is provided with an escape portion (1121), the escape portion (1121) being located at an end of the second through hole (112) near the die.

6. The mandrel holder according to claim 1 wherein said pressing sleeve (100) is provided with a boss (120), said mounting hole (110) being provided in said boss (120).

7. The mandrel holder according to claim 6 wherein the inner wall of the first connecting hole (210) is provided with an annular protrusion disposed toward the center line of the first connecting hole (210), the protrusion constituting the blocking portion (220), the inner diameter of the protrusion matching the diameter of the boss (120).

8. The mandrel holder of claim 7 wherein the length of said projection in the axial direction is greater than or equal to the length of said boss (120) in the axial direction.

9. The mandrel holder according to any one of claims 1 to 8 wherein the pressing cover (200) is further provided with a second connecting hole (230), the second connecting hole (230) is provided in plurality, and the plurality of second connecting holes (230) are uniformly distributed along the circumferential direction of the pressing cover (200).

10. A mandrel holder according to claim 9 wherein the second attachment hole (230) is provided with a countersunk head (231), the countersunk head (231) being located at the end of the second attachment hole (230) remote from the mould.