CN213733092U

CN213733092U - Rotating device and die

Info

Publication number: CN213733092U
Application number: CN202022160329.8U
Authority: CN
Inventors: 李探宇; 殷远华; 吴成连; 李探球
Original assignee: Jiangmen Boyuan Precision Plastic Co ltd
Current assignee: Jiangmen Boyuan Precision Plastic Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-07-20
Anticipated expiration: 2030-09-27

Abstract

The utility model discloses a rotating device and discloses a mould with the rotating device. The rotating device is used for rotationally demoulding the product and comprises a fixed insert, a rotating insert and a ball assembly. The rotary insert comprises an inner cavity, and the fixed insert is arranged in the inner cavity to bear a product; the ball assembly comprises a ball, the ball assembly is located between the fixed insert and the rotating insert, and the ball abuts against the fixed insert and the rotating insert. In the working process of the rotating device, the ball assembly positioned between the rotating insert and the fixed insert can reduce the friction between the rotating insert and the fixed insert, improve the smooth degree of rotation of the rotating insert and reduce the probability of clamping of the rotating device, thereby reducing the maintenance frequency of the die and prolonging the service life of the die.

Description

Rotating device and die

Technical Field

The utility model relates to a mould field, in particular to rotary device and mould.

Background

The rotary demolding is a common demolding mode in the field of molds, the rotary demolding is realized through a rotating device, and the main components of the rotating device are a rotary insert and a fixed insert. The specific implementation mode of the rotary demolding is that the rotary insert rotates relative to the fixed insert, and simultaneously, the product is demolded under the guidance of an external part. The rotating insert can rub against the fixed insert when rotating, the rotating insert is easy to be connected with the fixed insert and loosened after long-term work, and the rotating precision and the service life of the rotating device are affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a rotating device can improve the lubrication degree between fixed mold insert and the rotatory mold insert, reduces the dead condition of card appearing in rotating device, prolongs rotating device's life.

The utility model discloses still provide a mould that has above-mentioned rotary device.

According to the utility model discloses a rotary device of first aspect embodiment for rotate the drawing of patterns to the product, include:

fixing the insert;

the rotary insert comprises an inner cavity, and the fixed insert is arranged in the inner cavity to bear the product;

the ball assembly comprises a ball, and the ball assembly is located between the fixed insert and the rotating insert and abuts against the fixed insert and the rotating insert.

According to the utility model discloses rotary device of first aspect embodiment has following beneficial effect at least: when the rotary insert rotates relative to the fixed insert, the ball assembly positioned between the fixed insert and the rotary insert can improve the lubrication degree between the rotary insert and the fixed insert, so that the probability of clamping the rotary insert is reduced, and the service life of the rotary device is prolonged.

According to some embodiments of the first aspect of the present invention, the ball assembly is a ball guide sleeve. The ball guide sleeve has high precision and can be in better contact with the fixed insert and the rotary insert, so that the friction between the rotary insert and the fixed insert is reduced.

According to some embodiments of the first aspect of the present invention, the fixed insert comprises a first end and a second end, the ball guide sleeve comprises a first component and a second component, the first component is disposed at the first end, and the second component is disposed at the second end. The first assembly and the second assembly are arranged to improve the lubrication degree between the rotating insert and the fixed insert, so that the probability of clamping the rotating insert is reduced, and the service life of the rotating device is prolonged.

According to some embodiments of the first aspect of the present invention, the total length of the first assembly and the second assembly is greater than 1/3 of the length of the rotating insert. The total length of the first assembly and the second assembly is greater than 1/3 of the length of the rotating insert, so that the rotating insert has enough contact area with the ball guide sleeve, and the rotating stability of the rotating insert is guaranteed.

According to some embodiments of the first aspect of the present invention, the total length of the first assembly and the second assembly is equal to 2/3 of the length of the rotating insert. The total length of the first assembly and the second assembly is equal to 2/3 of the length of the rotating insert, so that the rotating insert and the ball guide sleeve have enough contact area, and the rotating insert has stronger stability during rotation, and compared with 2/3 that the total length of the first assembly and the second assembly is greater than the length of the rotating insert, the use amount of the ball guide sleeve can be reduced, and the manufacturing cost can be reduced.

According to some embodiments of the first aspect of the present invention, the first component and the second component are the same size and shape. Because the first assembly is arranged at the first end, the second assembly is arranged at the second end, and the first assembly and the second assembly with the same size and shape enable the rotating insert to be balanced, the lubrication degree between the rotating insert and the fixed insert can be increased, the blocking probability of the rotating insert is reduced, and the service life of the rotating device is prolonged.

According to some embodiments of the first aspect of the present invention, the arrangement of the balls in the first assembly and the arrangement of the balls in the second assembly are the same. The stability between ball guide pin bushing and rotatory mold insert can be improved to the same ball subassembly mode of arranging.

According to the utility model discloses a mould of second aspect embodiment, include the first aspect embodiment of the utility model the rotary device.

According to the utility model discloses mould of second aspect embodiment has following beneficial effect at least: mould is used rotary device, rotatory mold insert rotates for fixed mold insert during the rotatory drawing of patterns, and the ball subassembly that is located between fixed mold insert and the rotatory mold insert can promote the lubrication degree between rotatory mold insert and the fixed mold insert to reduce the dead probability of rotatory mold insert card, increase rotary device's life, thereby reduce the cost of maintenance of mould, increase live time.

According to some embodiments of the second aspect of the present invention, the mold further comprises a driving device, the rotating insert further comprises a gear, the gear is fixed outside the rotating insert, the driving device drives the gear makes the rotating insert rotate. The driving device provides power for the rotation of the rotating device, and the driving device drives the gear to rotate so as to drive the rotating insert to rotate.

According to some embodiments of the second aspect of the present invention, the gear is integrally connected with the rotating insert. The gear and the rotary insert are integrally connected, so that the relative rotation of the gear and the rotary insert can be prevented, and the stable rotation of the rotary insert is ensured.

Additional aspects and advantages of the invention 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 invention.

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 cross-sectional view showing the structural relationship between a rotating insert and a fixed insert;

FIG. 2 is a cross-sectional view of the rotating apparatus with a ball guide between the rotating insert and the stationary insert;

FIG. 3 is a cross-sectional view of another alternative turning apparatus with a ball guide between the turning insert and the stationary insert;

FIG. 4 is a schematic view of a rotating insert in a mold;

fig. 5 is a perspective view of the ball guide sleeve shown in fig. 2.

Reference numerals:

a rotating insert 1, a fixed insert 2, a rotating insert 100, a fixed insert 200, a gear 210, a first assembly 310, a second assembly 320.

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 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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, 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, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, 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 there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The injection mold is used for manufacturing plastic products, and the process of manufacturing the products comprises the stages of injection molding, cooling, demolding and the like. In the demolding stage, for products with internal threads, such as drinking bottle caps, caps of water tank knobs and the like, the mold needs to rotate according to the spiral angle of the threads while ejecting the products, and the process is called rotational demolding. The part that plays the main role in rotatory drawing of patterns in-process is rotary device, refer to fig. 1, and rotary device includes rotatory mold insert 1 and fixed mold insert 2, and rotatory mold insert 1 has the inner chamber, and fixed mold insert 2 is arranged in the inner chamber and supports and push against rotatory mold insert 1, and fixed mold insert 2 is hollow structure and inside is provided with the ejector pin. When the product carries out rotatory drawing of patterns ejector pin promotion product, simultaneously, rotatory mold insert 1 uses fixed mold insert 2 to rotate as the axle, and according to the spiral angle of product screw thread, rotatory mold insert 1 uses fixed mold insert 2 to cooperate with the speed that the ejector pin promoted the product at the speed that the axle carries out the rotation, carries out the drawing of patterns to the product.

Referring to fig. 1, in the working process of the rotating device, the rotating insert 1 rotates with the fixed insert 2 as an axis, and in the rotating process of the rotating insert 1, the position where the rotating insert 1 contacts with the fixed insert 2 generates frictional resistance to affect the smooth rotation of the rotating insert 1, and when the rotation center of the rotating insert 1 deviates, the rotating device is stuck, so that the service life of the rotating device is affected, and the maintenance cost of the mold is increased.

In order to prevent the offset of the rotation center of the rotating insert, reduce the occurrence of the jamming of the rotating device and prolong the service life of the rotating device, the following improved structure is provided.

Referring to fig. 2, the rotating device includes: fixing the insert 200; the rotating insert 100 comprises an inner cavity, and the fixed insert 200 is arranged in the inner cavity to bear a product; the ball assembly, including the ball, is located between the fixed insert 200 and the rotating insert 100, and the ball abuts against the fixed insert 200 and the rotating insert 100. The provision of the ball assembly reduces the frictional force between the rotary insert 100 and the fixed insert 200 when the rotating apparatus rotates, and when the rotary insert 100 rotates, the ball assembly rotates along with the rotary insert 100 to transfer the friction between the rotary insert 100 and the fixed insert 200 to the friction between the ball assembly and the fixed insert 200, the rotary insert 100 and the fixed insert 200 are in surface contact, the generated friction is surface friction, the ball assembly and the fixed insert 200 are in point contact, and the generated friction is line friction. The surface friction of the rotating device is converted into linear friction, so that the friction force is smaller, the lubrication degree between the fixed insert and the rotating insert can be improved, the probability of clamping of the rotating insert 100 is reduced, the service life of the rotating device is prolonged, and the maintenance cost of the die is reduced.

The fixed insert 200 and the rotating insert 100 may have a cylindrical shape having the same vertical thickness or may have a tilted cylindrical shape having different vertical thicknesses. After the ball assembly is added, the fixed insert 200 may be square or triangular with a non-circular or elliptical cross section, and only needs to be matched with the ball assembly, so that the surface of the ball assembly abutting against the rotating insert 100 is matched with the size of the rotating insert 100, and at this time, the thicknesses of all positions of the ball assembly are not completely the same.

Referring to fig. 2, the ball assembly is a ball guide sleeve. The ball guide includes a ball, and when the rotating insert 100 rotates, the ball guide serves as a rotation axis of the rotating insert 100, the rotating insert 100 and the ball contact each other, friction between the ball and the rotating insert 100 is linear friction, a friction area is smaller than a surface friction between the fixed insert 200 and the rotating insert 100, and a friction force between the ball guide and the rotating insert 100 is smaller than a friction force between the fixed insert 200 and the rotating insert 100. Thereby promoting the lubrication degree between the fixed insert 200 and the rotating insert 100, reducing the occurrence of the jamming of the rotating device, and prolonging the service life of the rotating device.

Referring to fig. 2, the fixed insert 200 includes a first end and a second end, and the ball guide includes a first assembly 310 and a second assembly 320, the first assembly 310 being disposed at the first end, and the second assembly 320 being disposed at the second end. The position where the rotating insert 100 contacts the fixed insert 200 has a first end near the product and a second end far from the product, the first component 310 is disposed at the first end, the second component 320 is disposed at the second end, and the arrangement of the first component 310 and the second component 320 can improve the lubrication degree between the rotating insert 100 and the fixed insert 200, thereby reducing the probability of the jamming of the rotating device and increasing the service life of the rotating device.

It should be noted that the lengths of the first module 310 and the second module 320 may not be the same. The length of the first component 310 is the distance from the product-free end of the first component 310 to the product-containing end of the fixing device, and the length of the second component 320 is the distance from the product-free end of the second component 320 to the product-containing end of the fixing device.

It should be noted that the first end and the second end shown in fig. 2 are disposed at the edge position in the contact position between the rotating insert 100 and the fixed insert 200, and the first end and the second end may also be disposed at the middle position of the contact position between the rotating insert 100 and the fixed insert 200, so as to play a role of stabilizing the rotating insert 100, and the positions of the first end and the second end cannot be regarded as limitations of the present invention.

Referring to fig. 2, the overall length of the first and

second assemblies

310, 320 is greater than 1/3 for the length of the rotating insert 100. The total length of the first member 310 and the second member 320 refers to the distance between the first member 310 and the second member 320 along the fixture from the end without the product to the end where the product is located. The total length of the first and

second assemblies

310 and 320 is greater than the length 1/3 of the rotating insert 100, which may ensure that the ball assembly has sufficient contact area with the rotating insert 100 and the fixed insert 200, may increase the smoothness between the rotating insert 100 and the fixed insert 200, and may make the rotating insert 100 stably rotate around the fixed insert 200, so that the rotating device is not easily jammed. Specifically, referring to fig. 2, the overall length of the first and

second assemblies

310, 320 is equal to 2/3 of the length of the rotating insert 100.

Referring to fig. 2, the first and

second components

310 and 320 are identical in size and shape. Specifically, the first assembly 310 and the second assembly 320 are both in a circular tube shape, the diameters of the pipe orifices of the first assembly 310 and the second assembly 320 are the same, the lengths of the pipe bodies are the same, and the cross-sectional areas of the parts of the fixed insert 200 connected with the rotating insert 100 are the same.

Referring to fig. 2, the balls in the first assembly 310 and the balls in the second assembly 320 are arranged in the same manner. The arrangement mode of the balls can be that the same row of balls and the next row of balls are respectively arranged on the same vertical line, or the same row of balls and the next row of balls are arranged in a staggered way. As shown in fig. 5, the arrangement of the balls is that the same row of balls and the next row of balls are arranged on the same vertical line respectively, and besides, the ball assembly with different ball arrangement modes can be selected according to actual needs to adapt to production needs.

Another embodiment of the present invention provides a mold using the aforementioned rotating apparatus, wherein the rotating apparatus includes a rotating insert 100, a stationary insert 200, and a ball assembly. The ball assembly includes a ball located between the fixed insert 200 and the rotating insert 100, the ball bearing against the fixed insert 200 and the rotating insert 100. When the rotating device is applied to a mold, and the rotating insert 100 rotates relative to the fixed insert 200, the ball assembly located between the fixed insert 200 and the rotating insert 100 can improve the lubrication degree between the rotating insert 100 and the fixed insert 200, reduce the probability of the rotating device being stuck, and increase the service life of the rotating device, thereby increasing the maintenance period of the mold and prolonging the service life of the mold.

Referring to fig. 3, the mold further includes a driving device, the rotating insert 100 further includes a gear 210, the gear 210 is fixed to the outer side of the rotating insert 100, and the gear 210 is driven by the driving device to rotate, or may drive other gears 210 to rotate. The connection between the gear 210 and the rotating device is by welding, adhering, or the like.

Referring to fig. 3 and 4, the gear 210 is integrally connected with the rotating insert 100. The rotary insert 100 is externally formed in a gear shape at the time of manufacturing. The driving device may be composed of a motor and a gear disposed at the periphery of the motor and engaged with the gear 210, and the gear 210 is driven to rotate by the gear engaged with the gear 210. The drive means may also be a pneumatic device and a series of gears that mesh with each other and eventually mesh with the gear 210 to rotate the gear 210 and thereby the rotating insert 100.

The following describes an embodiment of the present invention with a practical example:

examples of the invention

Referring to fig. 3 and 4, the fixed insert 200 is located inside the rotating insert 100, and a ball guide is located between the rotating insert 100 and the fixed insert 200 and abuts against the rotating insert 100 and the fixed insert 200. The rotating insert 100 has a circumferential protrusion on the exterior, which is a gear. The fixed insert 200 is a hollow cylinder having different sizes up and down, a first end is disposed at a position close to the product end where the size of the fixed insert 200 varies, the variation in size of the fixed insert 200 is equal to the thickness of the first assembly 310, and a second end is disposed at an edge of a position where the rotating insert 100 contacts the fixed insert 200. The first assembly 310 and the second assembly 320 are the same in size and shape, and the arrangement of the balls is the same. When the rotating insert 100 rotates relative to the fixed insert 200, the ball assembly located between the fixed insert 200 and the rotating insert 100 can improve the lubrication degree between the rotating insert 100 and the fixed insert 200, reduce the probability of jamming of the rotating device, and increase the service life of the rotating device, thereby reducing the maintenance frequency of the mold and prolonging the service life of the mold.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A rotary apparatus for rotary demolding of a product, the rotary apparatus comprising:

fixing the insert;

the ball assembly comprises a ball, the ball assembly is located between the fixed insert and the rotating insert, and the ball abuts against the fixed insert and the rotating insert.

2. The rotary device of claim 1 wherein the ball assembly is a ball guide.

3. The rotating apparatus according to claim 2, wherein the fixed insert includes a first end and a second end, and the ball assembly includes a first component disposed at the first end and a second component disposed at the second end.

4. The rotating apparatus according to claim 3, wherein the total length of the first and second assemblies is greater than 1/3 of the length of the rotating insert.

5. The rotating apparatus according to claim 4, wherein the total length of the first and second assemblies is equal to 2/3 of the length of the rotating insert.

6. The rotary device of claim 3, wherein the first component and the second component are the same size and shape.

7. A rotary device according to claim 3 wherein said balls in said first module and said balls in said second module are arranged in the same manner.

8. A mould comprising a rotary device as claimed in any one of claims 1 to 7.

9. The mold of claim 8, further comprising a drive device, the rotating insert further comprising a gear affixed to an outside of the rotating insert, the drive device for driving the gear to rotate the rotating insert.

10. The mold of claim 9, wherein the gear is integrally connected with the rotating insert.