Stamping head and stamping tool for sealing ring production

Abstract

The utility model discloses a stamping head for sealing ring production. According to the stamping head for sealing ring production, after the sealing ring is cut and formed, residual waste materials in the sealing ring can be automatically separated from the sealing ring, production procedures are reduced, and therefore production efficiency is improved. According to the stamping head stamping rod for sealing ring production, a first shearing opening is formed in one end of the stamping rod; the first end of the punch is connected into the punching rod in a sleeved mode, the punch is elastically connected with the punching rod through a first elastic piece, the second end of the punch is provided with a second shearing opening, and the first shearing opening and the second shearing opening are jointly matched to shear the sealing ring; the first end of the push rod is sleeved with the punch, the push rod is elastically connected with the punch through a second elastic piece, and the second end of the push rod is used for pushing waste in the sealing ring; the central axes of the punching rod, the punch and the push rod coincide; wherein the elastic modulus of the first elastic piece is different from that of the second elastic piece.

Description

Technical Field

[0001] The utility model relates to the technical field of seal ring manufacturing, in particular to a punching head and a punching tooling for seal ring production. Background Art

[0002] A seal ring is one of the common parts in mechanical engineering, usually used to prevent the leakage of liquids, gases and particulate matter. The seal ring is made of a soft and elastic material, such as rubber, polyurethane or polytetrafluoroethylene, etc., and sometimes fillers are added to enhance its compressive resistance and corrosion resistance.

[0003] In order to produce reliable quality seal rings, appropriate stamping tools and equipment are required. After stamping and forming, the punching head in the prior art for seal ring production requires workers to remove the waste inside the seal ring. This method not only increases the labor intensity of the workers, but also reduces the production efficiency.

[0004] Therefore, a punching head for seal ring production is needed that can automatically remove the waste inside the seal ring, thereby improving the production efficiency. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a punching head for seal ring production to solve the technical problem that the prior art punching head requires manual separation of the residual waste inside the seal ring after cutting the seal ring, resulting in low production efficiency.

[0006] A punching head for seal ring production according to the utility model includes:

[0007] A punching rod, one end of the punching rod has a first cutting opening;

[0008] A punch head, the first end of the punch head is sleeved inside the punching rod, the punch head is elastically connected with the punching rod through a first elastic member, the second end of the punch head has a second cutting opening, and the first cutting opening and the second cutting opening cooperate to cut the seal ring;

[0009] A push rod, one end of the push rod is sleeved inside the punch head, the push rod is elastically connected with the punch head through a second elastic member, and the other end of the push rod is used to push the waste inside the seal ring;

[0010] The central axes of the punching rod, the punch head and the push rod coincide;

[0011] Wherein, the elastic moduli of the first elastic member and the second elastic member are different.

[0012] Specifically, the stamping rod is connected to an external driving device, so as to drive the stamping head provided by the present utility model to complete the forming process. When the stamping driving device starts to drive, the push rod elastically connected to the stamping rod contacts the raw material, and the raw material provides a reaction force to the push rod, so that the push rod gradually contracts. While the push rod contracts towards the punch, the punch bears the reaction force of the push rod and also gradually contracts towards the direction of the stamping rod until the first cutting edge and the second cutting edge successively cut into the interior of the raw material, thereby cutting and forming the raw material. After the cutting and forming, the stamping driving device starts to contract, so that the push rod elastically connected to the punch gradually rebounds, and the punch elastically connected to the stamping rod gradually rebounds. Since the first elastic modulus is different from the second elastic modulus, the rebound speed of the push rod is inconsistent with the rebound speed of the punch, so that the waste of the sealing ring and the inner ring cut from the same piece of raw material are discharged at different times, thus realizing the automatic separation of the sealing ring and the waste inside it, reducing the steps of manual sorting by workers, and thereby improving the production efficiency.

[0013] In some examples of the present utility model, a through hole for installing the punch is provided on the stamping rod, a first limiting block is arranged on the hole wall of the stamping rod, a blocking block is arranged at the second end of the punch, and the first limiting block is located between the first end and the second end of the punch.

[0014] In some examples of the present utility model, a second limiting block is arranged at the first end of the punch, a cavity is formed by the first limiting block, the second limiting block and the inner wall of the stamping rod, and the first elastic member is installed on the punch.

[0015] In some examples of the present utility model, the first elastic member is a first spring, and the first spring is sleeved on the punch.

[0016] In some examples of the present utility model, a cavity is provided at the first end of the punch, and a limiting structure is arranged in the cavity, and the limiting structure is used to limit the displacement of the push rod in the stamping direction.

[0017] In some examples of the present utility model, the limiting structure includes:

[0018] A third limiting block, located at the second end of the push rod, and the cross-sectional area is larger than the cross-sectional area of the push rod;

[0019] A limiter, located between the first end and the second end of the push rod, and the limiter is adapted to the third limiting block and the push rod.

[0020] In some examples of the present utility model, a pushing block is provided at the first end of the push rod, the cavity is a variable cross-section cavity, the cavity includes a limiting section, a sliding section and a pushing section, and the pushing section, the sliding section and the limiting section are arranged in sequence from the first end of the punch towards the second end of the punch;

[0021] Wherein, the size of the limiting section and the size of the pushing section are both larger than the size of the sliding section.

[0022] In some examples of the present utility model, the cross-sectional size of the pushing block is larger than the size of the push rod, the pushing block is adapted to the pushing section so that the push rod can slide within the pushing section, an installation cavity is formed between the pushing block and the pushing section, and a second spring is installed in the installation cavity.

[0023] In some examples of the present utility model, the second spring is sleeved on the push rod.

[0024] A stamping tooling provided according to the present utility model includes:

[0025] An operating table for placing the material to be stamped;

[0026] A stamping driving device, installed above the operating table, and a driving end of the stamping driving device is connected to a punch for sealing ring production.

[0027] The punch for sealing ring production provided by the embodiment of the present utility model is connected to an external driving device through a stamping rod, so as to be able to drive the punch provided by the present utility model to complete the forming process. When the stamping driving device starts to drive, the push rod elastically connected to the stamping rod contacts the raw material, and the raw material provides a reaction force to the push rod, so that the push rod gradually contracts. While the push rod contracts towards the punch, the punch bears the reaction force of the push rod and also gradually contracts towards the direction of the stamping rod until the first cutting edge and the second cutting edge successively cut into the interior of the raw material, thereby cutting and forming the raw material. After the cutting and forming, the stamping driving device starts to contract, so that the push rod elastically connected to the punch gradually rebounds, and the punch elastically connected to the stamping rod gradually rebounds. Due to the different first elastic modulus and the second elastic modulus, the rebound speed of the push rod is inconsistent with the rebound speed of the punch, so that the cut sealing rings and the waste of the inner ring on the same piece of raw material are discharged at different times, thereby realizing the automatic separation of the sealing rings and the waste inside them, reducing the steps of manual sorting by workers, and thus improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic cross-sectional structure diagram of a stamping head for the production of sealing rings provided by the present invention;

[0030] Figure 2 For Figure 1 Schematic cross-sectional structure diagram of the middle punch;

[0031] Figure 3 For Figure 1 Enlarged view of area A in

[0032] Figure 4 For Figure 1 Schematic structure diagram of the stamping rod in

[0033] Figure 5 Schematic structure diagram of the stamping tooling provided by the present invention.

[0034] Explanation of reference numerals:

[0035] 100 - Stamping rod; 101 - First cutting notch; 102 - First limiting block;

[0036] 200 - Punch; 201 - Second cutting notch; 202 - Through hole; 203 - Stopper; 204 - Second limiting block;

[0037] 300 - Push rod; 301 - Pushing block;

[0038] 400 - Cavity;

[0039] 500 - First spring;

[0040] 600 - Cavity body; 601 - Limiting section; 602 - Sliding section; 603 - Pushing section;

[0041] 700 - Limiting structure; 701 - Third limiting block; 702 - Limiter;

[0042] 800 - Second spring;

[0043] 900 - Stamping driving device;

[0044] 110 - Operating table. Detailed implementation manners

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0046] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 a limitation of the present utility model. In addition, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0047] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0049] A seal ring, also known as a gasket, is a sealing element widely used in machinery. It is usually used to fill the gaps between two or more mating parts to prevent fluids, gases, or particles from passing through, thereby achieving the purpose of sealing and leak prevention. The production of seal rings generally involves steps such as material selection, cutting, machining, inspection, and packaging. However, in the prior art, during the machining process of seal rings, a stamping machine is usually used to cut and form the seal rings. During the machining process, since the seal ring and the internal waste are simultaneously detached from the stamping machine, in this way, the seal ring and the internal waste will still stick together after being detached from the stamping machine. Especially for seal rings made of elastic materials such as rubber, in the prior art, it is usually necessary to manually separate the seal ring from the internal waste. Therefore, a stamping head that can automatically separate the seal ring from the waste of the inner ring during machining can greatly reduce manual labor and increase production efficiency.

[0050] Figure 1 FIG. is a schematic cross-sectional structure diagram of a stamping head for seal ring production provided by the present invention. Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the middle punch 200 in

[0051] As Figure 1 、 Figure 5 shown, the stamping head for seal ring production according to an embodiment of the present invention includes: a stamping rod 100, one end of the stamping rod 100 having a first cutting edge 101; a punch 200, the first end of the punch 200 being sleeved in the stamping rod 100, the punch 200 being elastically connected to the stamping rod 100 through a first elastic member, the second end of the punch 200 having a second cutting edge 201, the first cutting edge 101 and the second cutting edge 201 cooperating together to cut the seal ring; a push rod 300, one end of the push rod 300 being sleeved in the punch, the push rod 300 being elastically connected to the punch 200 through a second elastic member, the other end of the push rod 300 being used to push the waste inside the seal ring; the central axes of the stamping rod 100, the punch 200, and the push rod 300 coincide; wherein, the elastic moduli of the first elastic member and the second elastic member are different.

[0052] Specifically, please continue to refer to Figure 1 、 Figure 5As shown, the stamping drive device 900 in the prior art can usually be selected from manual drive, mechanical drive, hydraulic drive, and pneumatic drive. Among them, manual drive: such as a manual pipe bending tooling, and the model is usually HG-series; mechanical drive: such as a spring pressing mechanical cutting die, and the model is usually J23-series; hydraulic drive: such as a hydraulic stretching die, and the model is usually YDH-series; pneumatic drive: such as a pneumatic press die, and the model is usually QD-series. The shapes of the first cutting opening 101 and the second cutting opening 201 are adapted to the size of the sealing ring to be produced. When a sealing ring with an inner diameter of 8 mm and an outer diameter of 15 mm needs to be produced, the inner diameter dimension of the first cutting opening 101 is 8 mm, and the inner diameter of the second cutting opening 201 is 15 mm, so that corresponding sizes can be produced. And when the shape of the sealing ring is rectangular or other shapes, the inner ring of the shown sealing ring is the same as the shape of the second cutting opening 201, and the outer ring of the shown sealing ring is the same as the shape of the first cutting opening 101. Specifically, when the stamping drive device 900 starts to drive, the push rod 300 elastically connected to the stamping rod 100 contacts the raw material, and the raw material provides a reaction force to the push rod 300, so that the push rod 300 gradually contracts. While the push rod 300 contracts towards the punch 200, the punch 200 bears the reaction force of the push rod 300 and also gradually contracts towards the direction of the stamping rod 100 until the first cutting opening 101 and the second cutting opening 201 are successively cut into the interior of the raw material, thereby cutting and forming the raw material. After cutting and forming, the stamping drive device 900 starts to contract, so that the push rod 300 elastically connected to the punch 200 gradually rebounds, and the punch 200 elastically connected to the stamping rod 100 gradually rebounds. Since the first elastic modulus is different from the second elastic modulus, the rebound speed of the push rod 300 is inconsistent with the rebound speed of the punch 200, so that the sealing ring and the waste of the inner ring cut from the same piece of raw material are discharged at different times, thus realizing the automatic separation of the sealing ring and its internal waste, reducing the steps of manual sorting by workers, and thus improving production efficiency.

[0053] Please refer to Figure 4 As shown, in some embodiments of the present invention, a through hole 202 for installing the punch 200 is provided on the stamping rod 100, a first limiting block 102 is provided on the hole wall of the stamping rod 100, a stop block 203 is provided at the second end of the punch 200, and the first limiting block 102 is located between the first end and the second end of the punch 200.

[0054] Please continue to refer to Figure 4, specifically, through the above structure, the stopper 203 can cooperate with the first limiting block 102, thereby avoiding the phenomenon that the punching rod 100 falls off during use, increasing the durability of the present utility model. Specifically, when the punching rod 100 starts to displace, the first limiting block 102 also displaces accordingly. When the first limiting block 102 displaces to the position of the stopper 203, the stopper 203 prevents the first limiting block 102 from continuing to displace, thereby restricting the displacement of the punch 200 and making the stability of the device itself better.

[0055] Please refer to Figure 1 and Figure 2 As shown, in some embodiments of the present utility model, a second limiting block 204 is provided at the first end of the punch 200. A cavity 400 is formed among the first limiting block 102, the second limiting block 204, and the inner wall of the punching rod 100. A first elastic member is installed in the cavity 400, and the first elastic member is in a compressed state in its natural state. Therefore, when the first elastic member is not subjected to an external force, it can automatically eject the punch 200. When the punching driving device 900 is driven, the punch 200 contracts until it contacts the first limiting block 102 and the stopper 203, thereby preventing the punch 200 from directly falling off.

[0056] Please refer to Figure 1 and Figure 2 As shown, the first elastic member is a first spring 500, and the first spring 500 is sleeved on the punch 200.

[0057] Through the above structure, the first spring 500 can be kept stable when rebounding, avoiding phenomena such as eccentricity when the first rebounding spring displaces, and increasing the durability of the first spring 500 during use.

[0058] Please refer to Figure 1 and Figure 2 As shown, a cavity 600 is formed at the first end of the punch 200, and a limiting structure 700 is provided in the cavity 600. The limiting structure 700 is used to limit the displacement of the push rod 300 in the punching direction.

[0059] Please refer to Figure 1 , Figure 3 , the limiting structure 700 includes: a third limiting block 701, located at the second end of the push rod 300, with a cross-sectional area larger than that of the push rod 300; a limiter 702, located between the first end and the second end of the push rod 300, and the limiter 702 is adapted to the third limiting block 701 and the push rod 300.

[0060] Furthermore, asFigure 1 , Figure 3 As shown, the stopper 702 is a bolt. A threaded hole is provided on the punch 200, and the bolt is screwed onto the threaded hole. One end of the bolt slightly protrudes from the inner wall of the cavity 600, and the approximate protruding distance is about 1 mm. Thus, the cross-sectional dimension of the bolt inside the cavity 400 is smaller than that of other positions. At the same time, the staff can adjust the length of the bolt extending into the inner wall of the cavity 400 according to different requirements. A plurality of bolts are provided, and the plurality of bolts are located on the same cross-section, so as to avoid the eccentricity problem caused by uneven limiting.

[0061] Please refer to Figure 1 and Figure 2 As shown, a pushing block 301 is provided at the first end of the push rod 300. The cavity 600 is a variable cross-section cavity 600. The cavity 600 includes a limiting section 601, a sliding section 602, and a pushing section 603. The pushing section 603, the sliding section 602, and the limiting section 601 are arranged in sequence from the first end of the punch 200 towards the second end of the punch 200. Among them, the dimensions of the limiting section 601 and the pushing section 603 are both larger than the dimension of the sliding section 602.

[0062] Please refer to Figure 1 and Figure 2 As shown, the cross-sectional dimension of the pushing block 301 is larger than that of the push rod 300. The pushing block 301 is adapted to the pushing section 603 so that the push rod 300 can slide in the pushing section 603. For example, when the size of the pushing block 301 is a 5 mm cube, the inner diameter of the pushing section 603 is 5.1 mm. Thus, the pushing block 301 can freely slide in the pushing section 603, avoiding excessive friction between the pushing section 603 and the pushing block 301. An installation cavity is formed between the pushing block 301 and the pushing section 603, and a second spring 800 is installed in the installation cavity.

[0063] With the above structure, the push rod 300, the push block 301, and the third limit block 701 form a dumbbell-shaped structure, which can cooperate with the cavity 600 to limit the displacement of the push rod 300. When the push rod 300 moves towards the third limit block 701, the push block 301 abuts against the side wall of the sliding end, thereby restricting further displacement. When the push block 301 moves towards the opening direction of the push section 603, the third limit block 701 abuts against the sliding section 602, thereby restricting further displacement. As a result, the push rod 300 can move within a certain range, ensuring the stability of the push rod 300 during use. At the same time, the above structure provides sufficient installation space for the second spring 800, enabling the push rod 300 to be in a popped state in the natural state.

[0064] Please refer to Figure 1 and Figure 2 As shown, the second spring 800 is sleeved on the push rod 300. An operating table 110 for placing the material to be punched; a punching driving device 900, located above the operating table 110, and the driving end of the punching driving device 900 is connected to a punching head for the production of seals. A transition section can be installed between the punching pneumatic device and the punching head, and some shock-absorbing devices can be installed through the transition section to increase the stability during use.

[0065] Furthermore, the elastic modulus of the second spring 800 is less than that of the first spring 500. When the elastic modulus of the second spring 800 is less than that of the first spring 500, when the punching driving device 900 starts to contract, the first spring 500 and the second spring 800 rebound simultaneously. Since the elastic modulus of the first spring 500 is greater than that of the second spring 800, the seal first pops out under the action of the first spring 500, and then the waste inside the seal pops out.

[0066] With the above structure, when the seal needs to be formed, the punching driving device 900 drives the punching head to provide pressure, which is finally transmitted to the operating table 110 through the action of pressure transmission. The operating table 110 provides a reaction force to the punching driving device 900, thereby realizing the function of forming the seal.

[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

[0069] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0070] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A punch head for sealing ring production, characterized in that: include: A punching rod, one end of which has a first shearing notch; A punch, wherein the first end of the punch is sleeved in the punch rod, the punch is elastically connected to the punch rod through a first elastic member, and the second end of the punch has a second shearing notch, the first shearing notch and the second shearing notch cooperate with each other to shear the sealing ring; A push rod, the first end of which is sleeved in the punch, the push rod is elastically connected to the punch through a second elastic member, and the second end of the push rod is used to push the waste material in the sealing ring; The central axes of the punch rod, the punch head and the push rod coincide with each other; Wherein, the elastic moduli of the first elastic member and the second elastic member are different.

2. The punch head for sealing ring production according to claim 1, characterized in that: The punch rod is provided with a through hole for installing the punch, the hole wall of the punch rod is provided with a first limit block, the second end of the punch is provided with a stop block, and the first limit block is located between the first end and the second end of the punch.

3. The punch head for sealing ring production according to claim 2, characterized in that: A second limiting block is disposed at the first end of the punch, the first limiting block, the second limiting block and the inner wall of the punching rod form a cavity, and the first elastic member is mounted on the punch.

4. The punching head for sealing ring production according to claim 3, characterized in that: The first elastic member is a first spring, and the first spring is sleeved on the punch.

5. The punching head for sealing ring production according to claim 3, characterized in that: A cavity is formed at the first end of the punch, and a limiting structure is arranged in the cavity. The limiting structure is used to limit the displacement of the push rod in the punching direction.

6. The punch head for producing sealing rings according to claim 5, characterized in that: The limiting structure comprises: A third limit block, located at the second end of the push rod, having a cross-sectional area greater than that of the push rod; The limiter is located between the first end and the second end of the push rod, and the limiter is adapted to the third limit block and the push rod.

7. The punch head for producing sealing rings according to claim 5, characterized in that: A pushing block is disposed at the first end of the push rod, the cavity is a variable cross-section cavity, and the cavity includes a limiting section, a sliding section, and a pushing section, and the pushing section, the sliding section, and the limiting section are sequentially arranged from the first end of the punch toward the second end of the punch; Wherein, the size of the limiting section and the size of the pushing section are both larger than the size of the sliding section.

8. The punch head for producing sealing rings according to claim 7, characterized in that: The cross-sectional size of the pushing block is larger than that of the pushing rod. The pushing block is adapted to the pushing section so that the pushing rod slides in the pushing section. The pushing block and the pushing section form an installation cavity in which a second spring is installed.

9. The punch head for producing sealing rings according to claim 8, characterized in that: The second spring is sleeved on the push rod.

10. A stamping tool, characterized in that: include: An operating table for placing the material to be stamped; A stamping drive device is located above the operating table, and a driving end of the stamping drive device is connected to a stamping head for sealing ring production as described in any one of claims 1-9.

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