CN220864512U

CN220864512U - Difficult-to-wear thimble mechanism

Info

Publication number: CN220864512U
Application number: CN202321850198.3U
Authority: CN
Inventors: 陈浩旬
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-04-30
Anticipated expiration: 2033-07-13

Abstract

The utility model discloses a thimble mechanism which is difficult to wear, comprising a sleeve, a limit sleeve, a movable sleeve and a limit device, wherein a thimble is inserted in the sleeve in a sliding way, the limit sleeve is sleeved on the upper part of the sleeve, and the movable sleeve is arranged between the sleeve and the limit sleeve in a sliding way; the limiting device comprises at least two limiting blocks, sliding grooves penetrating through the inner wall are respectively formed in two sides of the outer wall of the sleeve, the limiting blocks are respectively arranged in the sliding grooves in a sliding mode, first buffer components are arranged between the limiting blocks and the limiting sleeve, the limiting blocks respectively move similarly under the elastic action of the first buffer components, guide inclined planes are respectively arranged at the lower parts of the limiting blocks relatively, guide blocks matched with the guide inclined planes are respectively arranged at the upper openings of the movable sleeves relatively, and when the movable sleeves drive the guide blocks to ascend, the guide inclined planes of the limiting blocks move towards the direction of the limiting sleeves under the pushing of the guide blocks, so that the limiting blocks respectively move away from each other. The utility model is not easy to wear, has larger stress surface, greatly reduces the production cost and reduces the noise generated during working.

Description

Difficult-to-wear thimble mechanism

Technical Field

The utility model relates to the technical field of dies, in particular to a thimble mechanism which is not easy to wear.

Background

With the development of society and continuous enrichment of products, the mold is widely applied. In the process of molding and manufacturing plastic products, due to special shapes, the plastic products cannot be automatically demolded, a secondary ejection mechanism is needed, the existing secondary ejection mechanism is complex in structure and poor in reliability in the use process.

Referring to an utility model patent of the inventor Chen Haoxun in the application of the month 8 and 25 of 2016, a thimble mechanism disclosed as CN205969640U is disclosed, although the structure greatly simplifies a traditional complex ejection mechanism, a thimble is clamped by adopting a clamping bead mode, the clamping bead rolls along with the thimble in the lifting process of the thimble, so that the clamping bead rubs with a groove, the surface of the clamping bead is easy to wear under the long-term cyclic contact stress, or the outer wall of the thimble rubs with the clamping bead for a long time to easily cause the abrasion of the thimble, noise is easy to be generated due to the friction during the working, and the production cost is greatly increased.

Therefore, in order to solve the technical problems of easy abrasion and high noise of the thimble mechanism, the inventor improves the thimble mechanism and designs the thimble mechanism which is not easy to abrade.

Disclosure of utility model

The embodiment of the utility model aims to solve the technical problems of providing the ejector pin mechanism which is not easy to wear, has larger stress surface, greatly reduces the production cost and reduces the noise generated during working.

In order to achieve the aim, the utility model discloses a thimble mechanism which is not easy to wear, comprising a sleeve, a limit sleeve, a movable sleeve and a limit device, wherein a thimble is inserted in the sleeve in a sliding way, the limit sleeve is sleeved on the upper part of the sleeve, and the movable sleeve is arranged between the sleeve and the limit sleeve in a sliding way;

The limiting device comprises at least two limiting blocks, wherein sliding grooves penetrating through the inner wall are respectively formed in two sides of the outer wall of the sleeve, the limiting blocks are respectively arranged in the sliding grooves in a sliding manner, a first buffer part is arranged between the limiting blocks and the limiting sleeve, and the limiting blocks respectively move in a similar manner under the elastic action of the first buffer part so as to enable the limiting blocks to prop against the bottom of the thimble and prevent the thimble from being inserted into the sleeve;

The lower part of stopper is provided with the direction inclined plane relatively respectively, the upper opening of movable sleeve respectively relatively be provided with direction inclined plane assorted guide block when the movable sleeve drives the guide block rises, the direction inclined plane of stopper is in the promotion of guide block is down towards the direction of stop collar removes, so that the stopper is isolated the motion respectively for the thimble is stepping down.

Preferably, the tail part of the limiting block is provided with a mounting hole, and a first buffer part is arranged between the mounting hole of the limiting block and the limiting sleeve.

Preferably, the upper part of the sleeve is provided with an outer flange, the outer wall of the sleeve is provided with an annular clamping groove below the outer flange, and a clamping ring is clamped in the annular clamping groove, so that the movable sleeve is arranged between the outer flange and the clamping ring in a sliding manner.

Preferably, a through groove communicated with the sliding groove is formed in the bottom surface of the outer protruding portion above the guide block.

Preferably, a second buffer member is provided between the movable sleeve and the outer flange.

Preferably, the cross section of the chute is T-shaped, and the shape of the limiting block is matched with that of the chute.

Preferably, the end surfaces of the limiting blocks are respectively matched with the outer wall of the thimble.

Compared with the prior art, the utility model has the beneficial effects that:

Compared with the prior clamping bead, the limiting block has a larger stress surface, is not easy to wear, greatly reduces the production cost and reduces the noise generated during working.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a semi-sectional view of the overall structure of the present utility model;

fig. 3 is a schematic view showing a portion a structure in fig. 2;

fig. 4 is a schematic diagram of the overall structure of the annular clamping groove and the clamping ring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

Referring to fig. 1 and 2, an ejector pin mechanism which is not easy to wear comprises a sleeve 1, a limit sleeve 2, a movable sleeve 3 and a limit device 4, wherein a sliding channel is arranged in the sleeve 1, an ejector pin is inserted in the sliding channel in a sliding manner, the limit sleeve 2 is sleeved on the upper part of the sleeve 1, the movable sleeve 3 can be elastically and slidably arranged between the sleeve 1 and the limit sleeve 2, and the limit device 4 is arranged between the sleeve and the limit sleeve 2.

Referring to fig. 2 and 4, the upper portion of the sleeve 1 has an outer flange 12, the outer wall of the sleeve 1 has an annular clamping groove 13 below the outer flange 12, and a clamping ring 14 is clamped in the annular clamping groove 13, so that the movable sleeve 3 is slidably disposed between the outer flange 12 and the clamping ring 14, and a second buffer member 6 is disposed between the movable sleeve 3 and the outer flange 12, and in this embodiment, the second buffer member is preferably a spring.

Referring to fig. 2 and 3, the limiting device 4 includes at least two limiting blocks 41, two sides of the outer wall of the sleeve 1 are respectively provided with a sliding groove 11 penetrating through the inner wall, the limiting blocks 41 are respectively and elastically slidably arranged in the sliding groove 11, the tail parts of the limiting blocks 41 are provided with mounting holes 44, and a first buffer component 5 is arranged between the mounting holes 44 of the limiting blocks 41 and the limiting sleeve 2, and in this embodiment, the first buffer component is preferably a spring.

The lower part of the limiting block 41 is respectively and oppositely provided with a guide inclined surface 43, the upper opening of the movable sleeve 3 is respectively and oppositely provided with a guide block 31 matched with the guide inclined surface 43, and the bottom surface of the outer flange 12 is provided with a through groove 15 communicated with the chute 11 above the guide block 31.

The end surfaces of the limiting blocks 41 are respectively matched with the outer walls of the ejector pins, so that the ejector pins can be better clamped when the limiting blocks move in a similar mode, and the stress surface is larger.

Referring to fig. 3 and 4, the cross section of the chute 11 is in a T shape, and the shape of the stopper 41 is matched with the shape of the chute 11, so that the sliding of the stopper is more stable, and the limiting effect is better.

The ejector pin mechanism disclosed by the utility model is applied to a die, an ejector pin is arranged on a front template, a screw and a sleeve are fixed on an upper ejector pin plate, the sleeve penetrates through a sealing plate, the upper top plate and a lower top plate are arranged among a fixed plate, the sealing plate and die legs, a guide pillar penetrates through a sealing plate and the front die, the structure is a prior known technology, and the embodiment is not repeated here.

Referring to fig. 1-4, the specific operation is as follows:

When the movable sleeve is returned, the limiting block 41 moves nearby under the elastic action of the first buffer component 5, so that the upper opening of the sliding channel is closed by the limiting block 41, the bottom of the thimble is propped against by the limiting block 41, the thimble is prevented from being inserted into the sleeve 1, the upper top plate and the lower top plate move downwards, the front mould and the thimble mechanism move downwards, when the upper top plate and the lower top plate return to the position, the movable sleeve 3 props against the sealing plate, the movable sleeve 3 slides upwards along the sleeve 1 against the elastic action of the second buffer component 6, the guide block 31 of the movable sleeve 3 stretches into the sliding groove 11 through the through groove 15, the guide block 31 acts on the guide inclined surface 43 of the limiting block 41, the limiting block 41 moves away from each other under the pushing of the guide block 31, the upper opening of the sliding channel is opened, and the thimble is inserted into the sleeve 1 until the die assembly is completed.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and therefore, it is intended that the present utility model can be understood by those skilled in the art and implemented according to the technical concept, and the present utility model is not limited to the above embodiments, but modifications made according to the spirit and scope of the main technical solution of the present utility model should be included in the scope of the present utility model.

Claims

1. The thimble mechanism is characterized by comprising a sleeve (1), a limit sleeve (2), a movable sleeve (3) and a limit device (4), wherein a thimble is inserted in the sleeve (1) in a sliding manner, the limit sleeve (2) is sleeved on the upper part of the sleeve (1), and the movable sleeve (3) is arranged between the sleeve (1) and the limit sleeve (2) in a sliding manner;

the limiting device (4) comprises at least two limiting blocks (41), wherein sliding grooves (11) penetrating through the inner wall are respectively formed in two sides of the outer wall of the sleeve (1), the limiting blocks (41) are respectively arranged in the sliding grooves (11) in a sliding manner, a first buffer part (5) is arranged between the limiting blocks (41) and the limiting sleeve (2), and the limiting blocks (41) are respectively in similar movement under the elastic action of the first buffer part (5) so that the limiting blocks (41) prop against the bottoms of the ejector pins and are used for preventing the ejector pins from being inserted into the sleeve (1);

The lower part of stopper (41) is provided with direction inclined plane (43) respectively relatively, the upper opening of movable sleeve (3) respectively relatively be provided with direction inclined plane (43) assorted guide block (31) movable sleeve (3) drive when guide block (31) rise, direction inclined plane (43) of stopper (41) are in under the promotion of guide block (31) towards the direction of stop collar (2) removes, so that stopper (41) are separated the motion respectively and are the thimble is yielded.

2. The wear-resistant thimble mechanism according to claim 1, wherein the tail of the stopper (41) is provided with a mounting hole (44), and a first buffer member (5) is arranged between the mounting hole (44) of the stopper (41) and the stopper sleeve (2).

3. The wear-resistant thimble mechanism according to claim 1, wherein an outer protrusion (12) is provided at an upper portion of the sleeve (1), an annular clamping groove (13) is provided below the outer protrusion (12) on an outer wall of the sleeve (1), and a clamping ring (14) is provided in the annular clamping groove (13), so that the movable sleeve (3) is slidably disposed between the outer protrusion (12) and the clamping ring (14).

4. A wear-resistant thimble mechanism according to claim 3, wherein said bottom surface of said outer flange (12) has a through groove (15) communicating with said chute (11) above said guide block (31).

5. A wear-resistant ejector pin mechanism according to claim 3, characterized in that a second buffer member (6) is arranged between the movable sleeve (3) and the outer flange (12).

6. The wear-resistant thimble mechanism according to claim 1, wherein said chute (11) has a cross section in a shape of "T", and said stopper (41) has a shape matching the shape of said chute (11).

7. The wear-resistant thimble mechanism according to claim 1, wherein the end surfaces of said stopper (41) are respectively matched with the outer walls of said thimble.