Circumferential cutting device for sealing gasket

Abstract

The utility model relates to the technical field of production equipment of sealing gaskets, in particular to an annular cutting device of a sealing gasket, and aims to improve cutting quality, prevent a cutter from being stuck and enhance production efficiency. The device comprises a stamping and girdling mechanism and a lower die, the stamping and girdling mechanism is composed of a connecting seat and a rotatable girdling mechanism, the rotatable girdling mechanism comprises a fixing seat and a rotating drum, and spiral movement is achieved through a spiral sliding groove or a sliding block. The top of the rotary drum is connected with the connecting seat through the rotary device, the annular cutting head is fixed to the bottom of the rotary drum, the outer cutter and the inner cutter are assembled on the annular cutting head, and the annular cutting head is provided with the cutter clamping prevention structures, namely the first cutter clamping prevention ring, the second cutter clamping prevention ring and the corresponding springs, so that the cutting process is smooth and unobstructed, and meanwhile cut objects are ejected out to avoid cutter clamping. The lower die is provided with an externally-tangent ring groove and an internally-punched hole which are matched, and finished products can be separated and collected conveniently. The spiral motion and stamping technology is combined, stress is effectively dispersed, the risk of edge cracks and deformation is reduced, and the quality and consistency of the sealing gasket are improved.

Description

Technical Field

[0001] This utility model relates to the field of equipment technology for the production of sealing gaskets, and specifically to a gasket circumferential cutting device. Background Technology

[0002] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] Rubber gaskets are indispensable components in mechanical equipment and are widely used in various industrial fields, including but not limited to automobile manufacturing, petrochemicals, and mechanical engineering. They are primarily used to prevent fluid or gas leakage from gaps between adjacent parts, thus playing a crucial role in ensuring the safety and efficiency of equipment.

[0004] Traditional gasket cutting methods mainly rely on a single stamping process, that is, directly punching the material with a die to form the inner and outer ring shapes. However, this method has some limitations: on the one hand, due to the stress concentration generated during the stamping process, cracks or deformations can easily appear on the edges of the finished product, affecting the sealing performance; on the other hand, the stamped gasket is prone to jamming, thus affecting normal continuous stamping.

[0005] Therefore, there is an urgent need for a gasket circumferential cutting device that can maintain efficient and stable production while significantly improving cutting quality and product consistency. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a ring-cutting device for sealing gaskets that combines spiral motion and stamping technology, and integrates an anti-jamming device, effectively avoiding the problems existing in traditional methods.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A ring-cutting device for a sealing gasket includes a stamping ring-cutting mechanism and a lower die. The stamping ring-cutting mechanism includes a connecting seat connected to the output end of a stamping drive device. The connecting seat is connected to a rotatable ring-cutting mechanism.

[0009] The circumferential cutting mechanism includes a fixed base and a rotating drum. The fixed base is used to enable the rotating drum to perform a spiral motion during its downward movement. The upper end of the rotating drum is connected to a connecting base via a rotary device, and the lower end is fixedly fitted with a circumferential cutting head.

[0010] The circumferential cutting head includes an outer cutting blade, a first anti-jamming ring that can move up and down is slidably connected to the top of the inner wall of the outer cutting blade, an inner cutting blade that is threaded to the inner wall of the outer cutting blade is provided on the inner side of the first anti-jamming ring, and a first spring is provided between the top of the first anti-jamming ring and the threaded connection of the inner cutting blade; a second anti-jamming ring that can move up and down is slidably connected to the inner wall of the inner cutting blade, a top cover that is threaded to the inner cutting blade is provided above the second anti-jamming ring, and a second spring is provided between the top cover and the top of the second anti-jamming ring;

[0011] The lower die includes an outer cutting ring groove adapted to the outer cutting blade, and an inner punch hole adapted to the inner cutting blade is formed on the inner side of the outer cutting ring groove.

[0012] Preferably, the inner wall of the outer cutter is provided with a first sliding groove, and a first slider is slidably disposed in the first sliding groove on the outer wall of the first anti-jamming ring.

[0013] The inner wall of the inner cutting blade is provided with a second sliding groove, and a second slider disposed on the outer wall of the second anti-jamming blade ring is slidably fitted in the second sliding groove.

[0014] Preferably, the rotation device between the connecting seat and the rotating drum is a bearing, and a return spring is also provided between the connecting seat and the rotating drum.

[0015] Preferably, the connecting seat is provided with a mounting end, and the bottom of the mounting end is installed with the rotating cylinder by an interference fit through a bearing; the return spring is a torsion spring fitted on the mounting end.

[0016] Preferably, the inner wall of the fixed base and the outer wall of the rotating cylinder are respectively provided with a spiral groove or a spiral slider with a spiral trajectory.

[0017] Preferably, the circumferential cutting head and the rotating drum are fixed by a threaded connection; the fixing seat is provided with a fixing flange for fixed installation.

[0018] Preferably, the inner punch is a through hole, and a collection groove is provided below the inner punch.

[0019] Preferably, the blades of the inner and outer cutting blades are annular elliptical or circular.

[0020] This utility model includes, but is not limited to, the following beneficial effects:

[0021] This invention utilizes a spiral motion combined with stamping to effectively disperse stress, avoiding the stress concentration problems that occur during traditional stamping processes. This reduces the risk of cracks or deformation at the edges of the finished product, improving the quality and sealing performance of the gasket. Simultaneously, the ring-cutting head design incorporates a first anti-jamming ring and a second anti-jamming ring (anti-jamming core), and a spring mechanism ejects the cut round gasket from the inner punch hole, ensuring smooth operation during continuous punching, reducing the risk of jamming, and improving production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the mating structure between the rotating drum and the fixed base;

[0024] Figure 3 This is a schematic diagram of the internal structure of the circumferential cutting head.

[0025] The reference numerals in the attached drawings are as follows: 100, connecting seat; 200, mounting end; 201, return spring; 300, rotating drum; 301, spiral slider; 400, fixed seat; 401, fixed flange; 402, spiral groove; 500, ring cutting head; 501, outer cutting blade; 5011, first groove; 502, first anti-jamming ring; 5021, first spring; 503, inner cutting blade; 5031, second groove; 504, second anti-jamming ring; 5041, second spring; 600, lower die; 601, outer cutting ring groove; 602, inner punch. Detailed Implementation

[0026] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figures 1 to 3 A ring-cutting device for sealing gaskets is presented, including a stamping ring-cutting mechanism and a lower die 600. The stamping ring-cutting mechanism includes a connecting seat 100 connected to the output end of a stamping drive device via a flange. The connecting seat 100 is connected to a rotatable ring-cutting mechanism.

[0028] The circumferential cutting mechanism includes a fixed base 400 and a rotating drum 300. The fixed base 400 is used to enable the rotating drum 300 to perform a spiral motion during its downward movement. The upper end of the rotating drum 300 is connected to the connecting base 100 via a rotary device, and the lower end is fixedly mounted with a circumferential cutting head 500. The circumferential cutting head 500 and the rotating drum 300 can be fixed by a threaded connection.

[0029] The downward pressing of the ring cutter driven by the rotating drum 300 is achieved by the following structure: the inner wall of the fixed base 400 and the outer wall of the rotating drum 300 are respectively provided with a spiral groove 402 or a spiral slider 301 with a spiral trajectory.

[0030] The specific installation structure of the connecting seat 100 and the rotating drum 300 is as follows: The connecting seat 100 is provided with an installation end 200, and the bottom of the installation end 200 is installed with the rotating drum 300 through an interference fit bearing; the reset spring 201 is a torsion spring fitted on the installation end 200, which is used to assist the rotating drum 300 in resetting and improve the efficiency and smoothness of the cutter head retraction reset.

[0031] The circumferential cutting head 500 includes an outer cutting blade 501. A first anti-jamming blade ring 502, which can move up and down, is slidably connected to the top of the inner wall of the outer cutting blade 501. An inner cutting blade 503, whose top is threadedly connected to the inner wall of the outer cutting blade 501, is provided on the inner side of the first anti-jamming blade ring 502. A first spring 5021 is provided between the top of the first anti-jamming blade ring 502 and the threaded connection of the inner cutting blade 503. A second anti-jamming blade ring 504 (anti-jamming blade core), which can move up and down, is slidably connected to the inner wall of the inner cutting blade 503. A top cover, which is threadedly connected to the inner cutting blade 503, is provided above the second anti-jamming blade ring 504. A second spring 5041 is provided between the top cover and the top of the second anti-jamming blade ring 504. Under the action of the first spring 5021 and the second spring 5041, the first anti-jamming ring 502 and the second anti-jamming ring 504 will press the sealing gasket embedded between the cutters onto the lower die 600 to prevent jamming, and pop the cut-off round gasket out from the inner punch 602, thereby preventing jamming and realizing the separation of the round gasket.

[0032] The lower die 600 includes an outer cutting ring groove 601 adapted to the outer cutting blade 501, and an inner punch 602 adapted to the inner cutting blade 503 is provided on the inner side of the outer cutting ring groove 601.

[0033] Specifically, the inner wall of the outer cutter 501 is provided with a first sliding groove 5011, and a first slider is slidably disposed in the first sliding groove 5011 on the outer wall of the first anti-jamming ring 502; the inner wall of the inner cutter 503 is provided with a second sliding groove 5031, and a second slider is slidably disposed in the second sliding groove 5031 on the outer wall of the second anti-jamming ring 504.

[0034] To facilitate the stable installation and fixation of the mounting base 400, the mounting base 400 is provided with a fixing flange 401 for fixed installation.

[0035] To facilitate the separation and collection of the sealing gaskets, the inner round gaskets are first separated, i.e., the inner punch 602 is a through hole. A collection groove for collecting the round gaskets is provided below the inner punch 602. Then, the collection of the sealing gaskets can refer to the existing technology, i.e., the mother belt is conveyed downwards and the sealing gaskets are conveyed forward by the conveyor belt, thus completing the separation and conveying of the sealing gaskets.

[0036] The inner cutting blade 503 and the outer cutting blade 501 have annular elliptical or circular blade surfaces. In this embodiment, the outer cutting blade 501 has an elliptical blade surface, while the inner cutting blade 503 has a circular blade surface. Because this circumferential cutting device is a composite motion integrating spiral motion and stamping technology, it avoids stress concentration during stamping that could lead to cracks or deformation at the edges of the finished product, thereby improving the quality of the sealing gasket. Furthermore, the elliptical blade surface of the outer cutting blade 501 further enhances its circumferential cutting performance, thus further improving circumferential cutting efficiency and quality.

[0037] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0038] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ring cutting device for sealing gaskets, comprising a punch ring cutting mechanism and a lower die, characterized in that: the punch ring cutting mechanism comprises a connecting seat connected with the output end of a punch driving device, and a rotatable ring cutting mechanism is connected with the connecting seat; the ring cutting mechanism comprises a fixed seat and a rotating cylinder, the fixed seat is used to make the rotating cylinder perform helical motion during downward movement of the rotating cylinder; the upper end of the rotating cylinder is installed and connected with the connecting seat through a rotary device, and the lower end is fixedly installed with a ring cutting head; the ring cutting head comprises an outer cutting knife, the inner wall of the outer cutting knife is slidingly connected with a first anti-jamming knife ring capable of moving up and down, the inner side of the first anti-jamming knife ring is provided with an inner cutting knife which is threadedly connected with the top of the inner wall of the outer cutting knife, a first spring is arranged between the top of the first anti-jamming knife ring and the threadedly connected position of the inner cutting knife; the inner wall of the inner cutting knife is slidingly connected with a second anti-jamming knife ring capable of moving up and down, the upper side of the second anti-jamming knife ring is provided with a top cover which is threadedly connected with the inner cutting knife, and a second spring is arranged between the top of the second anti-jamming knife ring and the top cover; the lower die comprises an outer cutting ring groove matched with the outer cutting knife, and an inner punching hole matched with the inner cutting knife is formed in the inner side of the outer cutting ring groove.

2. The ring cutting device for sealing gaskets according to claim 1, characterized in that: a first sliding groove is formed in the inner wall of the outer cutting knife, and a first sliding block provided on the outer side wall of the first anti-jamming knife ring is slidingly matched in the first sliding groove; a second sliding groove is formed in the inner wall of the inner cutting knife, and a second sliding block provided on the outer side wall of the second anti-jamming knife ring is slidingly matched in the second sliding groove.

3. The ring cutting device for sealing gaskets according to claim 1, characterized in that: the rotary device between the connecting seat and the rotating cylinder is a bearing, and a reset spring is further arranged between the connecting seat and the rotating cylinder.

4. The ring cutting device for sealing gaskets according to claim 3, characterized in that: the connecting seat is provided with a mounting end, the bottom of the mounting end is mounted in interference fit with the rotating cylinder through a bearing, and the reset spring is a torsion spring which is sleeved on the mounting end.

5. The ring cutting device for sealing gaskets according to claim 1, characterized in that: the inner wall of the fixed seat and the outer wall of the rotating cylinder are respectively provided with helical sliding grooves or helical sliding blocks of helical tracks.

6. The ring cutting device for sealing gaskets according to claim 1, characterized in that: the ring cutting head and the rotating cylinder are fixedly connected through threads, and the fixed seat is provided with a fixing flange for fixed installation.

7. The ring cutting device for sealing gaskets according to any one of claims 1 to 6, characterized in that: the knife faces of the inner cutting knife and the outer cutting knife are annular elliptical or circular. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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