Precise positioning stamping knife for rubber product processing

Abstract

The utility model provides an accurate positioning stamping knife for rubber product processing, which comprises a knife body and a conical needle positioning component, the knife body is cylindrical, and a conical needle positioning component mounting hole is formed in the center of the lower end of the knife body; the conical needle positioning assembly comprises a positioning needle head, a fastening sleeve and a spring, the whole positioning needle head is conical, and an annular limiting edge is arranged at the tail of the positioning needle head; the fastening sleeve is of a cylindrical structure, the fastening sleeve is fixed in the conical needle positioning assembly mounting hole, and a limiting hole is formed in the lower portion of the fastening sleeve; the tail part of the positioning needle head is inserted into the fastening sleeve, and the limiting hole is matched with the annular limiting edge, so that the positioning needle head is prevented from being separated from the fastening sleeve; the spring is arranged in the fastening sleeve, one end of the spring abuts against the annular limiting edge, and the other end of the spring abuts against the conical needle positioning assembly mounting hole. The tip end of the positioning needle head extends out of the blade plane of the cutter body; the cutting edge of the cutter body is annular, and the annular cutting edge and the conical needle positioning assembly are coaxially arranged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rubber products processing tool technical field, concretely relates to a kind of precision positioning punch for rubber product processing. BACKGROUND

[0002] In the production and manufacturing field of rubber products, punch is a common and important processing tool, and is widely used in cutting and trimming operations on rubber materials. For example, when processing O-rings, rectangular rings and other rubber products, since the products usually have excess rubber edges after molding in the mold or need to be further processed into specific shaped holes, punch becomes an important tool to ensure the dimensional accuracy and appearance quality of the products. After punching, the surface of the rubber product can be smoother and the size meets the design requirements, thereby meeting the demand for higher quality standards. In addition, for some special structure of rubber products, such as rectangular gaskets or ring-shaped products, punch can also complete the cutting of inner hole and outer shape at the same time, significantly improving the processing efficiency.

[0003] However, the existing punch has obvious deficiencies in the specific use process, especially in the aspect of positioning accuracy. Traditional punch usually depends on the naked eye observation of the operator or the edge of the material to be processed for rough positioning, but due to the subjectivity of manual operation and the uncontrollability of the edge shape of the material, it is often difficult to achieve accurate cutting. Once the cutting position deviates, the product is prone to overcutting or cutting at an angle, resulting in large dimensional deviation of the finished product or even scrap. In addition, in some high-precision processing scenarios, inaccurate positioning can also cause a series of subsequent problems, such as assembly difficulty, sealing performance decline, etc., directly affecting the function and reliability of the product.

[0004] In addition to the problem of positioning accuracy, traditional punch also has deficiencies in cutting quality and operation efficiency. Inaccurate positioning not only leads to irregular cutting edge and non-standard size, but also may cause the operator to repeatedly adjust or reprocess to correct the positioning error. This method not only reduces the production efficiency, but also increases the material waste, further increases the production cost, and is difficult to meet the demand for efficient and accurate production of modern industry.

[0005] Therefore, the existing technology urgently needs an improved punch that can achieve precise positioning, optimize the design to solve the problem of positioning accuracy, ensure stable cutting quality, improve operation convenience and production efficiency, and better meet the actual needs of high precision, high quality and high efficiency in the process of rubber product processing. SUMMARY

[0006] The utility model provides a kind of precision positioning punch for rubber product processing to solve the problems of inaccurate positioning, unstable cutting quality and low operation efficiency of existing punch.

[0007] In order to achieve the above object, the technical scheme of the utility model is as follows:

[0008] A kind of precision positioning punch cutter for rubber product processing, including cutter body and conical needle positioning assembly, it is characterized in that,

[0009] The cutter body is cylindrical, and a conical needle positioning assembly mounting hole is arranged at the lower end of the cutter body;

[0010] The conical needle positioning assembly includes a positioning needle, a fastening sleeve and a spring. The positioning needle is conical in shape. The tail of the positioning needle is provided with an annular limiting flange. The fastening sleeve is cylindrical in structure. The fastening sleeve is fixed in the conical needle positioning assembly mounting hole. The lower part of the fastening sleeve is provided with a limiting hole. The tail of the positioning needle is inserted into the fastening sleeve. The limiting hole and the annular limiting flange cooperate with each other to prevent the positioning needle from coming out of the fastening sleeve.

[0011] The spring is arranged in the fastening sleeve. One end of the spring abuts against the annular limiting flange, and the other end abuts against the conical needle positioning assembly mounting hole.

[0012] The tip of the positioning needle protrudes from the cutting edge plane of the cutter body.

[0013] The cutting edge of the cutter body is annular, and the annular cutting edge is coaxially arranged with the conical needle positioning assembly.

[0014] Further, the cutter body includes a punch cutter main body, an outer circular cutting edge arranged at the lower end of the punch cutter main body, and an inner circular cutting edge. The outer circular cutting edge and the inner circular cutting edge are coaxial annular structures, respectively. The inner circular cutting edge is located inside the outer circular cutting edge, and the two together form a composite cutting tool structure.

[0015] The cutting edge of the outer circular cutting edge faces the outer periphery of the punch cutter main body, and the cutting edge of the inner circular cutting edge faces the inner periphery of the punch cutter main body.

[0016] Further, the cutter body includes a punch cutter main body and an annular outer circular cutting edge.

[0017] The cutting edge of the outer circular cutting edge faces the outer periphery of the cutter body. The outer side of the outer circular cutting edge is provided with an outer circular slope that is transitionally connected to the punch cutter main body. The outer circular slope is inclined inward.

[0018] The central axes of the cutter body, the conical needle positioning assembly, and the outer circular cutting edge are coaxial.

[0019] Further, the cutter body includes a punch cutter main body and an annular inner circular cutting edge.

[0020] The cutting edge of the inner circular cutting edge faces the inner periphery of the cutter body. The lower end of the inner circular cutting edge is provided with an inner circular slope that is transitionally connected to the punch cutter main body. The inner circular slope is inclined outward.

[0021] The center axis of the cutter body, the taper needle positioning assembly and the inner circular cutter blade are coaxial.

[0022] Further, the tail of the positioning needle is provided with an axial guide groove, and the inner wall of the fastening sleeve is provided with a guide key matched with the guide groove.

[0023] Further, the spring is a spiral compression spring, and the diameter of the spiral compression spring is smaller than the inner diameter of the fastening sleeve.

[0024] Further, the inner wall of the taper needle positioning assembly mounting hole is provided with a thread, and the outer wall of the fastening sleeve is provided with an external thread matched with the thread of the inner wall of the taper needle positioning assembly mounting hole, and the fastening sleeve is fixed in the cutter body through the thread.

[0025] Further, the inner wall of the taper needle positioning assembly mounting hole is provided with a clamping groove, and the outer wall of the fastening sleeve is provided with a buckle structure matched with the clamping groove, and the fastening sleeve is fixed in the cutter body through the buckle structure.

[0026] Further, the outer wall of the fastening sleeve is a conical structure, and the fastening sleeve and the inner wall of the taper needle positioning assembly mounting hole form a conical interference fit, and are fixed in the cutter body.

[0027] Further, the conical tip of the positioning needle is provided with a wear-resistant coating.

[0028] Compared with the prior art, the utility model has the beneficial effects as follows:

[0029] The utility model discloses a precision positioning punch cutter for rubber product processing, which significantly improves the positioning precision and cutting quality of the punch cutter in rubber product processing.

[0030] The utility model discloses an inner circular cutter blade and outer circular cutter blade composite cutter structure design, and the edge after cutting is more smooth, avoids the problem that too much rubber edge or uneven cutting is caused by unreasonable shape design of the traditional cutter blade.

[0031] The utility model embodiment provides a variety of flexible reliable fixed mode, including screw connection, buckle structure and taper interference fit etc., convenient for installation and dismounting of device, the design of fastening sleeve ensures the stability of taper needle positioning assembly in the cutter body, and the guiding groove of positioning needle head cooperates with the guiding key of fastening sleeve inner wall, further improves the sliding stability and installation precision of positioning assembly.

[0032] Certainly, the various technical solutions of the utility model need not necessarily achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain the drawing of other embodiments according to these drawings.

[0034] Figure 1 It is the structure schematic diagram of the utility model embodiment 1;

[0035] Figure 2 It is the structure schematic diagram of the utility model embodiment 2;

[0036] Figure 3 It is the structure schematic diagram of the utility model embodiment 3;

[0037] Figure 4 It is the use state schematic diagram of the utility model embodiment 1;

[0038] In the drawing,

[0039] 1-punch main body, 2-positioning needle head, 3-fastening sleeve, 4-spring, 5-outer circle cutting edge, 6-inner circle cutting edge. DETAILED DESCRIPTION

[0040] In order to facilitate understanding of the utility model, below will be more comprehensive to the utility model with reference to relevant drawings.Described in the drawings the preferred embodiment of the utility model.However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein.On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0041] In the description of the patent, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the patent and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the patent.

[0042] In the description of the patent, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the patent can be understood according to the specific circumstances.

[0043] The utility model will be described in detail below in combination with specific embodiments and the drawings.

[0044] Embodiment 1:

[0045] As Figure 1 shown, the utility model provides a kind of precision positioning punch for rubber product processing, including cutter body and taper needle positioning assembly;Cutter body includes punch main body 1 and the outer circle cutter edge 5 and inner circle cutter edge 6 of the lower end of punch main body 1;Punch main body 1 is cylindrical, and its lower end center is equipped with taper needle positioning assembly mounting hole, and taper needle positioning assembly includes locating needle head 2, fastening sleeve 3 and spring 4.

[0046] Locating needle head 2 is conical as a whole, and the tail portion is equipped with annular limiting along, and the outer side of annular limiting along is equipped with axial guide groove;Fastening sleeve 3 is cylindrical structure, is fixed in the taper needle positioning assembly mounting hole of punch main body 1, and the inner wall of fastening sleeve is equipped with guide key matched with guide groove;Fastening sleeve 3 lower part is equipped with limiting hole, and the tail portion of locating needle head 2 is inserted into fastening sleeve 3, and limiting hole and annular limiting along are matched with each other, to prevent locating needle head from coming out of fastening sleeve;Spring 4 is arranged in fastening sleeve 3, and the spring is helical compression spring, one end of which abuts against annular limiting along, and the other end abuts against taper needle positioning assembly mounting hole.

[0047] The lower end of punch main body 1 is equipped with outer circle cutter edge 5 and inner circle cutter edge 6, which are coaxial ring structure respectively, wherein inner circle cutter edge 6 is located on the inner side of outer circle cutter edge 5, and the two together form a composite cutter structure;The cutting edge of outer circle cutter edge 5 faces the outer periphery of punch main body 1, and the outer side of outer circle cutter edge is equipped with inwardly inclined outer circle slope;

[0048] Through the above structure, the embodiment can simultaneously realize high-precision cutting of the inner and outer diameters of the rubber product, and the cutting edge is neat without subsequent trimming.

[0049] Referring to Figure 4 , during use, the rubber product to be processed is placed at the central position of the lower end of the punch body 1, and the central hole of the rubber product is aligned with the tapered tip of the positioning needle 2. With the application of pressure by the punching device, the positioning needle 2 moves into the fastening sleeve 3 under the action of the spring 4, and the needle tip gradually penetrates into the center of the rubber product, thereby achieving accurate positioning; after positioning is completed, the outer circular blade 5 and the inner circular blade 6 are simultaneously pressed down to cut the rubber product. During cutting, the outer circular blade 5 smoothly cuts into the outer edge of the rubber product through its inwardly inclined outer circular slope, and the inner circular blade 6 cuts the inner hole of the rubber product through its outwardly inclined inner circular slope, ensuring that the cutting surface is smooth and the size is accurate.

[0050] After cutting is completed, with the release of pressure by the punching device, the elastic resetting action of the spring 4 pushes the positioning needle 2 back to the initial position, ensuring that the taper needle positioning assembly returns to the standby state and is ready for the next processing. Due to the coaxial design of the positioning needle 2, the outer circular blade 5 and the inner circular blade 6, the positioning is accurate and the blade distribution is uniform during the entire cutting process, avoiding the problem of product unqualification caused by blade deviation in traditional cutting, and significantly improving the processing efficiency and yield.

[0051] Embodiment 2:

[0052] As shown in Figure 2 , this embodiment adjusts the blade body structure based on embodiment 1, and only sets the annular outer circular blade 5; the cutting edge of the outer circular blade 5 at the lower end of the punch body 1 faces the outer periphery of the blade body, and the outer side thereof is provided with an outer circular slope which is transitionally connected with the punch body 1, and the outer circular slope is inwardly inclined; the thickness of the outer circular blade 5 gradually decreases, forming a structure which gradually thins from the punch body 1 to the cutting edge, so as to reduce the cutting resistance and prolong the service life of the blade.

[0053] The taper needle positioning assembly is consistent with embodiment 1, including the positioning needle 2, the fastening sleeve 3 and the spring 4. The outer wall of the fastening sleeve 3 adopts a tapered structure, which forms a tapered interference fit with the taper needle positioning assembly mounting hole of the punch body 1, thereby enhancing the installation stability of the fastening sleeve; this embodiment is particularly suitable for cutting the outer circular structure of the rubber product, and has high cutting efficiency and stability.

[0054] Embodiment 3:

[0055] As shown in Figure 3As shown, the embodiment only sets the annular inner circular blade 6. The blade edge of the inner circular blade 6 of the punch body 1 faces the inner periphery of the cutter body, and the inner side of the lower end of the inner circular blade is provided with an inner circular slope connected with the punch body 1, and the inner circular slope is inclined outward. The inner periphery of the inner circular blade 6 is provided with a circular arc chamfer structure to improve the wear resistance of the blade.

[0056] The conical needle positioning assembly is the same as that of embodiments 1 and 2, which is composed of a positioning needle head 2, a fastening sleeve 3 and a spring 4. The tip surface of the positioning needle head 2 is coated with a wear-resistant coating to improve its wear resistance in high-frequency blanking operation. The embodiment is suitable for cutting of rubber product inner circular pieces, and high-precision cutting is realized through the inner circular blade 6, and the cutting surface is smooth without burrs.

[0057] The above application of specific examples to the utility model is described, which is only used to help understand the utility model, and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A precision positioning punch knife for rubber product processing, comprising a knife body and a taper needle positioning assembly, characterized in that, the knife body is cylindrical, and a taper needle positioning assembly mounting hole is arranged at the central lower end of the knife body; the taper needle positioning assembly comprises a positioning needle, a fastening sleeve and a spring, the positioning needle is conical in whole, and an annular limiting flange is arranged at the tail of the positioning needle; the fastening sleeve is cylindrical in structure, is fixed in the taper needle positioning assembly mounting hole, and a limiting hole is arranged at the lower part of the fastening sleeve; the tail of the positioning needle is inserted into the fastening sleeve, the limiting hole and the annular limiting flange are matched with each other, and the positioning needle is prevented from coming out of the fastening sleeve; the spring is arranged in the fastening sleeve, one end of the spring abuts against the annular limiting flange, and the other end of the spring abuts against the taper needle positioning assembly mounting hole; the tip of the positioning needle extends out of the cutting edge plane of the knife body; the cutting edge of the knife body is annular, and the annular cutting edge is coaxially arranged with the taper needle positioning assembly. 2.The precision positioning punch knife for rubber product processing according to claim 1, characterized in that, the knife body comprises a punch knife main body, and an outer circular cutting edge and an inner circular cutting edge arranged at the lower end of the punch knife main body, the outer circular cutting edge and the inner circular cutting edge are coaxial annular structures respectively, the inner circular cutting edge is located at the inner side of the outer circular cutting edge, and the two together form a composite cutter structure; the cutting edge of the outer circular cutting edge faces the outer periphery of the punch knife main body, and the cutting edge of the inner circular cutting edge faces the inner periphery of the punch knife main body. 3.The precision positioning punch knife for rubber product processing according to claim 1, characterized in that, the knife body comprises a punch knife main body and an annular outer circular cutting edge; the cutting edge of the outer circular cutting edge faces the outer periphery of the knife body, and an outer circular slope which is transitionally connected with the punch knife main body is arranged at the outer side of the outer circular cutting edge, and the outer circular slope is inwardly inclined; the central axes of the knife body, the taper needle positioning assembly and the outer circular cutting edge are coaxial. 4.The precision positioning punch knife for rubber product processing according to claim 1, characterized in that, the knife body comprises a punch knife main body and an annular inner circular cutting edge; the cutting edge of the inner circular cutting edge faces the inner periphery of the knife body, and an inner circular slope which is transitionally connected with the punch knife main body is arranged at the inner lower end of the inner circular cutting edge, and the inner circular slope is outwardly inclined; the central axes of the knife body, the taper needle positioning assembly and the inner circular cutting edge are coaxial. 5.The precision positioning punch knife for rubber product processing according to claim 1, characterized in that, an axial guide groove is arranged at the outer side of the tail of the positioning needle, and a guide key which is matched with the guide groove is arranged on the inner wall of the fastening sleeve. 6.The precision positioning punch knife for rubber product processing according to claim 1, characterized in that, the spring is a helical compression spring, and the diameter of the helical compression spring is smaller than the inner diameter of the fastening sleeve; 7. The precision positioning die cutter for rubber article processing of claim 1, wherein, a thread is arranged on the inner wall of the taper needle positioning assembly mounting hole, an outer thread which is matched with the thread of the taper needle positioning assembly mounting hole is arranged on the outer wall of the fastening sleeve, and the fastening sleeve is fixed in the knife body through the thread; 8. The precision positioning die cutter for rubber article processing of claim 1, wherein, a clamping groove is arranged on the inner wall of the taper needle positioning assembly mounting hole, a clasp structure which is matched with the clamping groove is arranged on the outer wall of the fastening sleeve, and the fastening sleeve is fixed in the knife body through the clasp structure.

9. The precision positioning die cutter for rubber article processing of claim 1, wherein, The outer wall of the fastening sleeve is a conical structure, the fastening sleeve and the inner wall of the positioning assembly mounting hole of the conical needle form a conical interference fit, and is fixed in the cutter body.

10. The precision positioning die cutter for rubber article processing of claim 1, wherein, The conical tip of the positioning needle is provided with a wear-resistant coating.

Images