Rivet production die

Abstract

The utility model discloses a rivet production die. The rivet production die comprises a die shell, a die core assembly and a cold heading piece ejection assembly. The mold core assembly comprises a core body and an ejector pin, the core body is detachably arranged in the mold shell, a mold hole is formed in the core body and extends in the vertical direction, the ejector pin is arranged in the mold shell, the upper end of the ejector pin penetrates into the mold hole, and the ejector pin is used for abutting against a cold heading part when the cold heading part moves downwards along the mold hole. A blind hole is machined in the cold heading part; the cold heading part ejection assembly is detachably arranged in the die shell, located below the core body and used for ejecting the cold heading part out of the die hole. According to the rivet production mold provided by the utility model, a product can be conveniently ejected out of the mold, the damage to the mold caused by the fact that the product cannot fall off is avoided, and in addition, each part in the mold is easy to disassemble and replace, so that the maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing, in particular to a rivet production mold. Background Art

[0002] Rivets are a commonly used fastener with a wide range of uses. They have a cap on one end and use their own deformation or interference to connect the riveted parts during riveting. There are many types of rivets, and they are not limited to any form. Commonly used ones include semi-circular head, flat head, semi-hollow rivets, solid rivets, deep hole rivets, countersunk rivets, blind rivets, and hollow rivets. These usually use their own deformation to connect the riveted parts. Rivets are generally made of carbon steel and stainless steel.

[0003] Due to the small size of rivets, it is inconvenient to remove the rivets after forming using existing forming molds such as deep hole rivets and hollow rivets, and the rivets are easily stuck on the mold; in addition, existing molds are generally one-piece structures that are not easy to disassemble. When internal components are damaged, the entire mold needs to be replaced, which results in high processing costs and is not conducive to use. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a rivet production die.

[0005] To achieve the above-mentioned purpose, a rivet production mold according to an embodiment of the utility model includes:

[0006] Formwork;

[0007] A mold core assembly, the mold core assembly comprising a core body and an ejector pin, the core body being detachably arranged in the mold shell, and a mold hole being provided on the core body, the mold hole extending in a vertical direction, the ejector pin being arranged in the mold shell, and the upper end of which is passed through the mold hole, and being used for abutting against the cold heading part when the cold heading part moves downward along the mold hole, thereby processing a blind hole on the cold heading part;

[0008] A cold heading ejection assembly is detachably arranged in the mold shell and located below the core body, and is used to eject the cold heading from the mold hole.

[0009] According to the rivet production mold provided by the utility model, the product can be ejected from the mold very conveniently, avoiding damage to the mold due to the product being unable to fall off. In addition, the various parts in the mold are easy to disassemble and replace, thereby reducing maintenance costs.

[0010] In addition, the rivet production mold according to the above embodiment of the utility model may also have the following additional technical features:

[0011] According to an embodiment of the utility model, a first fixing member is provided inside the mold shell at the bottom of the core body, and the first fixing member is connected to the lower end of the ejector pin and is used to fix the ejector pin in the mold shell.

[0012] According to an embodiment of the utility model, an elastic member is disposed on the first fixing member, and the elastic member is connected to the core body.

[0013] According to one embodiment of the utility model, the cold heading ejection assembly includes a driving seat and an ejector sleeve;

[0014] The driving seat is arranged in the mold shell, and can move up and down in the mold shell under the drive of the driving mechanism;

[0015] The upper end of the ejector sleeve is sleeved outside the ejector, and the lower end is connected to the driving seat.

[0016] According to an embodiment of the utility model, the driving seat includes a second fixing member and a plurality of connecting rods;

[0017] The second fixing member is disposed in the elastic member and connected to the lower end of the ejector sleeve;

[0018] The upper ends of the plurality of connecting rods are connected to the second fixing member, and the lower ends are connected to the driving mechanism, so as to drive the second fixing member and the ejector sleeve to move up and down in the mold shell under the drive of the driving mechanism.

[0019] According to one embodiment of the utility model, the cold heading ejection assembly also includes a guide member, which is arranged in the mold shell and located at the bottom of the first fixing member; a plurality of guide holes are opened on the guide member, and the plurality of guide holes extend in the vertical direction, and the plurality of connecting rods are respectively passed through the plurality of guide holes.

[0020] According to one embodiment of the utility model, the ejector pin includes a pin body and a connecting block;

[0021] The bottom of the first fixing member is provided with a groove, the top wall of the groove is provided with a through hole, the needle body is passed through the through hole into the mold hole, and the connecting block is fixed in the groove through the guide member.

[0022] According to one embodiment of the utility model, a mounting hole is opened inside the mold shell, and the mounting hole extends in the vertical direction. The upper end of the inner wall of the mounting hole is provided with an upper annular step surface, and the core body is located below the upper annular step surface and can be abutted against the upper annular step surface under the drive of the elastic member; the lower end of the inner wall of the mounting hole is provided with a lower annular step surface, and the first fixing member is located below the lower annular step surface and abuts against the lower annular step surface.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0028] Reference numerals:

[0029] Formwork 10;

[0030] A first fixing member 11;

[0031] Elastic member 12;

[0032] Mounting hole 13;

[0033] Upper annular step surface 14;

[0034] Lower annular step surface 15;

[0035] Core assembly 20;

[0036] Core 21;

[0037] Die hole 211;

[0038] Ejector 22;

[0039] Needle body 221;

[0040] Connecting block 222;

[0041] Cold heading ejector assembly 30;

[0042] Driving seat 31;

[0043] A second fixing member 311;

[0044] Connecting rod 312;

[0045] Guide member 313;

[0046] Ejector sleeve 32.

[0047] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] The rivet production mold according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0054] Reference Figures 1 to 3 As shown, the rivet production mold provided according to the embodiment of the utility model includes a mold shell 10, a core assembly 20 and a cold heading ejection assembly 30.

[0055] The mold shell 10 can be made of stainless steel, which has high hardness, is not easy to rust, and has a long service life, and is conducive to assembling the mold core assembly 20 and the cold heading ejection assembly 30.

[0056] The core assembly 20 includes a core body 21 and an ejector pin 22. The core body 21 is detachably arranged in the mold shell 10, and a mold hole 211 is opened on the core body 21. The mold hole 211 extends in the vertical direction. The ejector pin 22 is arranged in the mold shell 10, and the upper end is penetrated into the mold hole 211, and is used to abut against the cold heading part when the cold heading part moves downward along the mold hole 211, thereby processing a blind hole on the cold heading part.

[0057] The core assembly 20 is used to process blind holes on cold heading parts, and specifically includes a core body 21 and an ejector pin 22. The core body 21 is also made of stainless steel and can move up and down in the mold shell 10. A mold hole 211 is opened on it, and the mold hole 211 can be used for inserting the cold heading part. The upper end of the ejector pin 22 is penetrated into the mold hole 211. Therefore, when the cold heading part is inserted along the mold hole 211, the ejector pin 22 is penetrated into the cold heading part from bottom to top, thereby processing a blind hole on the cold heading part.

[0058] The cold heading ejection assembly 30 is detachably disposed in the mold shell 10 and is located below the core body 21 , and is used to eject the cold heading from the mold hole 211 .

[0059] The cold heading ejection assembly 30 is mainly used to provide a thrust to the cold heading after the cold heading is processed, so as to eject it from the die hole 211, thereby solving the problem that the cold heading is difficult to separate from the die, so as to facilitate the processing of the next cold heading.

[0060] More specifically, when in use, the cold heading piece can be driven by the lower driving mechanism to be inserted into the die hole 211. In the process of the cold heading piece moving downward along the die hole 211, the ejector pin 22 in the die hole 211 can be gradually inserted into the cold heading piece, thereby processing a blind hole on the cold heading piece. In this way, the processing of the blind hole on the rivet can be completed. After processing and forming, the cold heading piece is relatively lifted up by the cold heading piece ejection assembly 30, thereby ejecting the cold heading piece into the die hole 211. In this way, the problem of the cold heading piece being stuck in the die hole 211 and difficult to disengage can be avoided.

[0061] In addition, the mold core and the cold heading ejection assembly 30 are detachably installed in the mold shell 10. Therefore, when the mold is damaged, the corresponding parts can be replaced separately according to the damaged parts, thereby reducing the maintenance cost.

[0062] According to the rivet production mold provided by the utility model, the product can be ejected from the mold very conveniently, avoiding damage to the mold due to the product being unable to fall off. In addition, the various parts in the mold are easy to disassemble and replace, thereby reducing maintenance costs.

[0063] Advantageously, in one embodiment of the utility model, a first fixing member 11 is provided inside the mold shell 10 at the bottom of the core body 21 , and the first fixing member 11 is connected to the lower end of the ejector pin 22 for fixing the ejector pin 22 inside the mold shell 10 .

[0064] The first fixing member 11 is used to assemble the ejector pin 22 in the mold shell 10, and the first fixing member 11 is detachably connected to the mold shell 10, so that it can be removed from the mold shell 10. Then, when the ejector pin 22 is damaged, it can be removed from the mold shell 10 together with the ejector pin 22 and replaced as a whole without replacing the entire mold, thereby greatly reducing maintenance costs.

[0065] Advantageously, in an embodiment of the present invention, an elastic member 12 is disposed on the first fixing member 11 , and the elastic member 12 is connected to the core 21 .

[0066] Specifically, the mold core is movably arranged in the mold shell 10 and connected to the core body 21, so that the mold core can move elastically in the mold shell 10. Therefore, when the driving mechanism drives the cold heading piece to move downward, when the cold heading piece is inserted into the mold hole 211, the part of the cold heading piece located outside the mold core will move the mold core downward for a certain displacement and compress the elastic part 12. Therefore, the contact between the cold heading piece and the mold core is contact, thereby avoiding mutual squeezing and damage between the two.

[0067] Advantageously, in another embodiment of the utility model, the cold heading ejection assembly 30 includes a drive seat 31 and an ejector pin 22 set; the drive seat 31 is disposed in the mold shell 10 and can move up and down in the mold shell 10 under the drive of the drive mechanism;

[0068] The upper end of the ejector pin 22 is sleeved outside the ejector pin 22 , and the lower end is connected to the driving seat 31 .

[0069] That is to say, the ejector pin 22 sleeve is also inserted into the die hole 211 and sleeved on the ejector pin 22. Driven by the driving mechanism, the ejector pin 22 sleeve can move upward along the film hole, thereby ejecting the cold-forged part from the inside of the die hole 211 to prevent the cold-forged part from being stuck in the die core.

[0070] Advantageously, in some embodiments of the present utility model, the driving seat 31 includes a second fixing member 311 and a plurality of connecting rods 312;

[0071] The second fixing member 311 is disposed in the elastic member 12 and connected to the lower end of the ejector pin 22;

[0072] The upper ends of the plurality of connecting rods 312 are connected to the second fixing member 311 , and the lower ends are connected to the driving mechanism, so as to drive the second fixing member 311 and the ejector pin 22 to move up and down in the mold shell 10 under the drive of the driving mechanism.

[0073] There is a certain gap between the second fixing member 311 and the spring, and the two are independent of each other and do not interfere with each other. The second fixing member 311 is used to set the ejector pin 22 set in the die hole 211, and is connected to multiple connecting rods 312, and the multiple connecting rods 312 are connected to the driving mechanism. In this way, under the drive of the driving mechanism, the second fixing member 311 and the ejector pin 22 set can be driven to move up and down by driving the multiple connecting rods 312 to facilitate the ejection of the cold heading part from the die hole 211.

[0074] Advantageously, in some embodiments of the present invention, the cold heading ejection assembly 30 further includes a guide member 313, which is disposed in the mold shell 10 and located at the bottom of the first fixing member 11; a plurality of guide holes are formed on the guide member 313, and the plurality of guide holes extend in a vertical direction, and the plurality of connecting rods 312 are respectively passed through the plurality of guide holes.

[0075] The guide member 313 can play a guiding role, and the guide holes thereon are used for multiple connecting rods 312 to pass through, so as to guide the multiple connecting rods 312 to move in the vertical direction. As a result, the guide rods will not be offset, and the ejector pin 22 sleeve on the second fixing member 311 will not rub against the inner wall of the mold hole 211 and the ejector pin 22.

[0076] Advantageously, in some other embodiments of the present invention, the ejector pin 22 includes a pin body 221 and a connecting block 222;

[0077] The bottom of the first fixing member 11 is provided with a groove, the top wall of the groove is provided with a through hole, the needle body 221 passes through the through hole into the mold hole 211, and the connecting block 222 is fixed in the groove through the guide member 313.

[0078] In this way, the ejector pin 22 is assembled on the first fixing member 11 through the guide member 313 . Then, when the guide member 313 is removed, the ejector pin 22 can also be removed very conveniently, thereby facilitating the removal and replacement of the ejector pin 22 .

[0079] Advantageously, in some other embodiments of the utility model, a mounting hole 13 is opened inside the mold shell 10, and the mounting hole 13 extends in the vertical direction; an upper annular step surface 14 is provided at the upper end of the inner wall of the mounting hole 13, and the core body 21 is located below the upper annular step surface 14, and can be abutted against the upper annular step surface 14 under the drive of the elastic member 12; a lower annular step surface 15 is provided at the lower end of the inner wall of the mounting hole 13, and the first fixing member 11 is located below the lower annular step surface 15 and abuts against the lower annular step surface 15.

[0080] That is to say, the mold core and the first fixing member 11 are assembled from bottom to top in the mounting hole 13 on the mold shell 10, and are limited by the first annular step surface and the second annular step surface respectively. Then, when some parts in the mold are damaged, it is only necessary to remove the guide member 313, the first fixing member 11, the drive seat 31, etc. in turn, and then replace the damaged parts, without replacing the entire mold, which is very convenient.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0082] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A rivet production mold, characterized in that: include: Formwork; A mold core assembly, the mold core assembly comprising a core body and an ejector pin, the core body being detachably arranged in the mold shell, and a mold hole being provided on the core body, the mold hole extending in a vertical direction, the ejector pin being arranged in the mold shell, and the upper end of which is passed through the mold hole, and being used for abutting against the cold heading part when the cold heading part moves downward along the mold hole, thereby processing a blind hole on the cold heading part; A cold heading ejection assembly is detachably arranged in the mold shell and located below the core body, and is used to eject the cold heading from the mold hole.

2. The rivet production mold according to claim 1, characterized in that: A first fixing piece is arranged inside the mold shell at the bottom of the core body, and the first fixing piece is connected to the lower end of the ejector pin and is used to fix the ejector pin in the mold shell.

3. The rivet production mold according to claim 2, characterized in that: An elastic member is disposed on the first fixing member, and the elastic member is connected to the core body.

4. The rivet production mold according to claim 3, characterized in that: The cold heading ejector assembly comprises a drive seat and an ejector sleeve; The driving seat is arranged in the mold shell, and can move up and down in the mold shell under the drive of the driving mechanism; The upper end of the ejector sleeve is sleeved outside the ejector, and the lower end is connected to the driving seat.

5. The rivet production mold according to claim 4, characterized in that: The driving seat includes a second fixing member and a plurality of connecting rods; The second fixing member is disposed in the elastic member and connected to the lower end of the ejector sleeve; The upper ends of the plurality of connecting rods are connected to the second fixing member, and the lower ends are connected to the driving mechanism, so as to drive the second fixing member and the ejector sleeve to move up and down in the mold shell under the drive of the driving mechanism.

6. The rivet production mold according to claim 5, characterized in that: The cold heading ejection assembly also includes a guide member, which is arranged in the mold shell and located at the bottom of the first fixing member; a plurality of guide holes are opened on the guide member, and the plurality of guide holes extend in a vertical direction, and the plurality of connecting rods are respectively inserted into the plurality of guide holes.

7. The rivet production mold according to claim 6, characterized in that: The ejector pin comprises a pin body and a connecting block; The bottom of the first fixing member is provided with a groove, the top wall of the groove is provided with a through hole, the needle body is passed through the through hole into the mold hole, and the connecting block is fixed in the groove through the guide member.

8. The rivet production mold according to claim 4, characterized in that: A mounting hole is provided inside the mold shell, and an upper annular step surface is provided at the upper end of the inner wall of the mounting hole. The core body is located below the upper annular step surface and can be abutted against the upper annular step surface under the drive of the elastic member; a lower annular step surface is provided at the lower end of the inner wall of the mounting hole, and the first fixing member is located below the lower annular step surface and abutted against the lower annular step surface.

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