An extrusion die with a sealing ring

Abstract

The utility model discloses an extrusion die with a sealing ring, comprising a main body, a die cavity opened inside the main body, a top plate slidably arranged inside the die cavity, the sealing ring sleeved on the outer edge surface of the top plate, a limiting structure arranged between the top plate and the sealing ring, the limiting structure comprising a sliding groove, a sliding clamping block, a metal clamping groove, a threaded fastening rotary rod, an outer groove and an inner groove, the sliding groove being symmetrically opened inside the top plate, and having an outer end open; through the designed limiting structure, after the sealing ring is sleeved on the outer side of the top plate, the sliding clamping block can be moved, and the outer end of the sliding clamping block is clamped with the metal clamping groove on the inner side of the sealing ring, and the sleeve arrangement of the sealing ring is reinforced in this way, and even if the sealing ring is subjected to a large friction force from the inner wall of the die cavity, the sealing ring is not easy to deviate or fall off under the reinforcement of the limiting structure, which is conducive to the normal use of the extrusion die.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to an extrusion mold with a sealing ring. Background Art

[0002] Extrusion dies are a type of molding dies, except that their material discharging method is achieved through extrusion. Extrusion dies are widely used in aluminum special-shaped structures and are also used in plastic parts. After searching, an extrusion die is recorded in the Chinese patent application with application number CN201420460167.1. In this patent, a sealing ring is placed on the outside of the top plate to prevent material leakage during the extrusion process.

[0003] To ensure the sealing effect, the outer edge surface of the sealing ring needs to be in close contact with the inner wall of the mold cavity. When the top plate moves, the sealing ring will slide against the inner wall of the mold cavity. During this process, the friction between the sealing ring and the mold cavity can easily cause the sealing ring to shift or fall off, affecting the normal use of the extrusion mold. Therefore, it is necessary to design a new extrusion mold to solve this problem. Utility Model Content

[0004] The utility model aims to provide an extrusion die with a sealing ring, so as to solve the problem that the sealing ring in the cited patent proposed in the above background technology is easy to deviate or fall off.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an extrusion mold with a sealing ring, comprising a main body, the mold cavity is opened inside the main body, the top plate is slidably arranged inside the mold cavity, the sealing ring is sleeved on the outer edge surface of the top plate, and a limiting structure is arranged between the top plate and the sealing ring, the limiting structure comprises a sliding groove, a sliding clamping block, a metal clamping groove, a threaded fastening rotary rod, an outer groove and an inner groove, the sliding groove is symmetrically opened inside the top plate and has an outer end opening, the sliding clamping block is slidably arranged inside the sliding groove, the metal clamping groove is fixed on the inner side of the sealing ring, the outer end of the sliding clamping block extends out of the sliding groove and is clamped with the metal clamping groove, the threaded fastening rotary rod is threadedly connected with the inner end of the sliding clamping block, the outer groove is through-opened on one side of the sliding groove, and the inner groove is opened on the other side of the sliding groove, the outer end of the threaded fastening rotary rod extends into the outer groove, and the inner end of the threaded fastening rotary rod extends into the inner groove.

[0006] Preferably, a knob is fixed to the outer end of the threaded fastening rotating rod, and an extrusion head is fixed to the inner end of the threaded fastening rotating rod.

[0007] Preferably, the limiting structure further comprises a spring A, and the spring A is fixedly connected between the inner end of the sliding block and the bottom end of the sliding groove.

[0008] Preferably, the limiting structure further comprises a rubber ring and an annular groove, wherein there are two rubber rings distributed on the inner wall of the sealing ring, and the annular groove is formed on the outer edge surface of the top plate and is clamped with the rubber ring.

[0009] Preferably, a top rod is fixedly connected to the outer side of the top plate, a fixed disk is fixed to the surface of the top rod, a guide buffer assembly is arranged between the fixed disk and the main body, the guide buffer assembly includes a guide rod, a through groove, a guide hole and a spring B, the guide rod is fixed to the surface of the fixed disk facing the main body, the through groove is provided on the surface of the main body, the guide hole is provided on the inner side of the through groove, and the guide rod is slidably embedded in the interior of the guide hole.

[0010] Preferably, the spring B is sleeved on the surface of the guide rod, one end of the spring B is fixedly connected to the fixed plate, and the other end is abutted against the inner wall of the through groove.

[0011] Preferably, the fixed plate includes a plate body and a connecting rod, the plate body is annular in structure and is sleeved on the outer surface of the top rod, and the connecting rod is fixedly connected between the top rod and the inner wall of the plate body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Through the designed limiting structure, after the sealing ring is put on the outside of the top plate, the sliding block can be moved to engage the outer end of the sliding block with the metal groove on the inner side of the sealing ring. In this way, the sleeve of the sealing ring is reinforced. Even if the sealing ring is subjected to a large friction force from the inner wall of the mold cavity, the sealing ring is not easy to deviate or fall off due to the reinforcement of the limiting structure, which is conducive to the normal use of the extrusion mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front cross-sectional view of the utility model;

[0015] Figure 2 It is a front cross-sectional view of the limiting structure of the utility model;

[0016] Figure 3 It is a front cross-sectional view of the guide buffer assembly of the utility model;

[0017] Figure 4 It is a side sectional view of the fixing plate of the utility model;

[0018] In the figure: 100, main body; 200, mold cavity; 300, top plate; 400, sealing ring; 500, limiting structure; 501, sliding groove; 502, sliding block; 503, metal groove; 504, threaded fastening rod; 505, outer groove; 506, inner groove; 507, spring A; 508, rubber ring; 509, annular groove; 600, ejector rod; 700, fixed disk; 701, disk body; 702, connecting rod; 800, guide buffer assembly; 801, guide rod; 802, through groove; 803, guide hole; 804, spring B. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0020] See also Figures 1 to 4, is an embodiment of the utility model, and this embodiment provides a technical solution: an extrusion mold with a sealing ring, including a main body 100, a mold cavity 200 is opened inside the main body 100, and a top plate 300 is slidably arranged inside the mold cavity 200. After the material is injected into the mold cavity 200, the material can be extruded through the top plate 300, and the sealing ring 400 is sleeved on the outer edge surface of the top plate 300. The sealing ring 400 fits with the inner wall of the mold cavity 200 to ensure a good sealing effect. A limiting structure 500 is arranged between the top plate 300 and the sealing ring 400 to reinforce the sealing ring 400. The limiting structure 500 includes a sliding groove 501, a sliding block 502, a metal groove 503, a threaded fastening rod 504, an outer groove 505 and an inner groove 506. The sliding groove 501 is symmetrically arranged inside the top plate 300 and has an outer end opening. The sliding block 502 is slidably arranged inside the sliding groove 501. The metal groove 503 is fixed on the inner side of the sealing ring 400. The outer end of the movable block 502 extends out of the sliding groove 501 and is engaged with the metal groove 503, so as to limit and fix the sealing ring 400 so that it will not easily deviate or loosen. The threaded fastening rod 504 is threadedly connected with the inner end of the sliding block 502. The outer groove 505 is through-opened on one side of the sliding groove 501, and the inner groove 506 is opened on the other side of the sliding groove 501. The outer end of the threaded fastening rod 504 extends into the outer groove 505, and the inner end of the threaded fastening rod 504 extends into the inner groove 506. The sliding block 502 can be driven to move by pulling up the threaded fastening rotary rod 504, so that the sliding block 502 is engaged with the metal slot 503. A knob is fixed to the outer end of the threaded fastening rotary rod 504 to facilitate the rotation of the threaded fastening rotary rod 504. An extrusion head is fixed to the inner end of the threaded fastening rotary rod 504. After the sliding block 502 is engaged with the metal slot 503, the threaded fastening rotary rod 504 is tightened to allow the extrusion head to be squeezed and contacted with the inner groove 506, so that the sliding block 502 can be fixed.

[0021] In this embodiment, preferably, the limiting structure 500 also includes a spring A507, which is fixedly connected between the inner end of the sliding block 502 and the bottom end of the sliding groove 501. The spring A507 is in a tension state. When the threaded fastening rod 504 is loosened, the sliding block 502 is reset under the action of the spring A507 and disengaged from the metal groove 503. At this time, the limiting of the sealing ring 400 is released, and the sealing ring 400 can be disassembled and replaced.

[0022] In this embodiment, preferably, the limiting structure 500 also includes a rubber ring 508 and an annular groove 509. There are two rubber rings 508, which are distributed on the inner wall of the sealing ring 400. The annular groove 509 is opened on the outer edge surface of the top plate 300 and is clamped with the rubber ring 508 to improve the sleeve stability of the sealing ring 400.

[0023] In this embodiment, preferably, a top rod 600 is fixedly connected to the outer side of the top plate 300, a fixed disk 700 is fixed to the surface of the top rod 600, a guide buffer assembly 800 is arranged between the fixed disk 700 and the main body 100, and plays a guiding and buffering role. The guide buffer assembly 800 includes a guide rod 801, a through groove 802, a guide hole 803 and a spring B804. The guide rod 801 is fixed to the surface of the fixed disk 700 facing the main body 100, and the through groove 802 is provided on the surface of the main body 100. The guide hole 803 is opened on the inner side of the through groove 802, and the guide rod 801 is slidably embedded in the inside of the guide hole 803. When the top plate 300 moves, the guide rod 801 can slide inside the guide hole 803 to play a guiding role. The spring B804 is sleeved on the surface of the guide rod 801. One end of the spring B804 is fixedly connected to the fixed plate 700, and the other end is abutted against the inner wall of the through groove 802. When the guide rod 801 slides toward the inside of the guide hole 803, the spring B804 is gradually compressed to play a buffering role.

[0024] In this embodiment, preferably, the fixed disk 700 includes a disk body 701 and a connecting rod 702. The disk body 701 is annular in structure and is sleeved on the outer surface of the top rod 600. The connecting rod 702 is fixedly connected between the top rod 600 and the inner wall of the disk body 701 to fix the disk body 701 on the surface of the top rod 600. The connecting rod 702 is staggered with the threaded fastening rotary rod 504 to facilitate personnel to rotate the threaded fastening rotary rod 504.

[0025] Although the embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion die with a sealing ring, comprising a main body (100), characterized in that: The mold cavity (200) is opened inside the main body (100), the top plate (300) is slidably arranged inside the mold cavity (200), the sealing ring (400) is sleeved on the outer edge surface of the top plate (300), and a limiting structure (500) is arranged between the top plate (300) and the sealing ring (400), and the limiting structure (500) includes a sliding groove (501), a sliding block (502), a metal groove (503), a threaded fastening rod (504), an outer groove (505) and an inner groove (506), the sliding groove (501) is symmetrically opened inside the top plate (300) and has an outer end open, the sliding block (502) The sliding member (501) is arranged inside the sliding groove (501), the metal groove (503) is fixed on the inner side of the sealing ring (400), the outer end of the sliding block (502) extends out of the sliding groove (501) and is engaged with the metal groove (503), the threaded fastening rotary rod (504) is threadedly connected with the inner end of the sliding block (502), the outer groove (505) is through-opened on one side of the sliding groove (501), the inner groove (506) is opened on the other side of the sliding groove (501), the outer end of the threaded fastening rotary rod (504) extends into the inner side of the outer groove (505), and the inner end of the threaded fastening rotary rod (504) extends into the inner side of the inner groove (506).

2. An extrusion die with a sealing ring according to claim 1, characterized in that: A knob is fixed to the outer end of the threaded fastening rotating rod (504), and an extrusion head is fixed to the inner end of the threaded fastening rotating rod (504).

3. The extrusion die with a sealing ring according to claim 1, characterized in that: The limiting structure (500) further comprises a spring A (507), wherein the spring A (507) is fixedly connected between the inner end of the sliding block (502) and the bottom end of the sliding groove (501).

4. The extrusion die with a sealing ring according to claim 1, characterized in that: The limiting structure (500) further comprises a rubber ring (508) and an annular groove (509). There are two rubber rings (508) distributed on the inner wall of the sealing ring (400). The annular groove (509) is formed on the outer edge surface of the top plate (300) and is clamped with the rubber ring (508).

5. The extrusion die with a sealing ring according to claim 1, characterized in that: The outer side of the top plate (300) is fixedly connected with a top rod (600), a fixed disk (700) is fixed on the surface of the top rod (600), a guide buffer assembly (800) is arranged between the fixed disk (700) and the main body (100), and the guide buffer assembly (800) comprises a guide rod (801), a through groove (802), a guide hole (803) and a spring B (804), the guide rod (801) is fixed on the surface of the fixed disk (700) facing the main body (100), the through groove (802) is provided on the surface of the main body (100), the guide hole (803) is provided on the inner side of the through groove (802), and the guide rod (801) is slidably embedded in the inside of the guide hole (803).

6. An extrusion die with a sealing ring according to claim 5, characterized in that: The spring B (804) is sleeved on the surface of the guide rod (801), one end of the spring B (804) is fixedly connected to the fixed plate (700), and the other end is abutted against the inner wall of the through groove (802).

7. An extrusion die with a sealing ring according to claim 6, characterized in that: The fixed disk (700) comprises a disk body (701) and a connecting rod (702); the disk body (701) is an annular structure and is sleeved on the outer surface of the top rod (600); and the connecting rod (702) is fixedly connected between the top rod (600) and the inner wall of the disk body (701).

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