Multi-station cold heading forming device for high-strength bolt

Abstract

The utility model discloses a multi-station cold heading forming device for a high-strength bolt, and relates to the technical field of cold heading forming. Comprising a base, a fixing plate is fixed to one side of the upper surface of the base, and hydraulic cylinders are fixed to the two ends of the fixing plate; the driving part is arranged in the middle of the upper surface of the base, and the output end of the hydraulic cylinder is connected with the driving part; the number of the male dies is multiple, and the multiple male dies are all installed on the driving piece; and the female dies are arranged on the other side of the upper surface of the base, the number of the female dies is multiple, and the multiple female dies are matched with the male die. According to the multi-station cold heading forming device for the high-strength bolt, the driving piece is arranged on the base and can drive the male die to move, so that the male die and the female die are matched to conduct bolt cold heading forming, the male die is installed on the movable plate on the driving piece through the bolt, and the male die is convenient to disassemble and replace when being abraded or needing to be replaced; and a plurality of male die stations are arranged on the movable plate, so that the production efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading, in particular to a multi-station cold heading device for high-strength bolts. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die-casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry". When processing bolts, cold heading molds are needed. Bolts are a kind of mechanical parts, cylindrical threaded fasteners equipped with nuts. Fasteners consist of a head, a screw and a cylinder with external threads, and are used to fasten two objects with threaded holes.

[0003] The utility model with publication number CN 219616631 U discloses a bolt cold heading forming mold, including a first template, a mold cavity body is opened on the surface of the first template, a spring is arranged on the front side of the first template, circular plates are fixedly installed on the front and rear sides of the spring, a clamping rod is welded on the back side of the circular plate on the back side, a shock-absorbing pad is fixedly connected to the back side of the first template, the shock-absorbing pad is a rubber pad, a second template is arranged on the back side of the shock-absorbing pad, a die head is fixedly installed on the front side of the second template, and the die head and the mold cavity body are arranged correspondingly.

[0004] As shown in the above utility model, the existing bolt cold heading forming mold protects the mold by setting a protective mechanism. This method improves the service life of the mold, but most of the existing molds are fixed and are not convenient to replace after wear. At the same time, molds of different specifications cannot be replaced according to needs, and the working range of the equipment cannot be increased. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-station cold heading forming device for high-strength bolts, which solves the above-mentioned problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-station cold heading forming device for high-strength bolts, comprising:

[0007] A base, a fixing plate is fixed on one side of the upper surface of the base, and hydraulic cylinders are fixed on both ends of the fixing plate;

[0008] A driving member, the driving member is arranged in the middle of the upper surface of the base, and the output end of the hydraulic cylinder is connected to the driving member;

[0009] A male mold, wherein a plurality of male molds are provided, and the plurality of male molds are all mounted on the driving member;

[0010] The female mold is arranged on the other side of the upper surface of the base, and there are multiple female molds, and the multiple female molds are adapted to the male mold.

[0011] Preferably, a plurality of equally spaced dovetail grooves are provided in the middle of the upper surface of the base, a plurality of equally spaced placement grooves are provided on the other side of the upper surface of the base, limiting plates are provided on both ends of the placement grooves, a limiting slider is fixed at one end of the lower surface of the limiting plate, a limiting groove is correspondingly provided on the upper surface of the base, and one end of the limiting slider is connected to the inner wall of one end of the limiting groove through a first spring.

[0012] Preferably, the driving member includes a movable plate arranged in the middle of the upper surface of the base, a plurality of first reinforcing plates distributed at equal intervals are arranged on one side of the movable plate, a plurality of dovetail sliders distributed at equal intervals are fixed to the bottom of the movable plate, the dovetail sliders are located in dovetail slide grooves, a plurality of positioning grooves distributed at equal intervals are opened on the other side of the movable plate, and a plurality of mounting holes distributed in a circular array are opened around the positioning grooves.

[0013] Preferably, the male mold includes a bonding plate bonded to one side of the movable plate, a positioning block is fixed in the middle of one side of the bonding plate, the positioning block is adapted to the positioning groove, a die head is fixed in the middle of the other side of the bonding plate, the other side of the bonding plate is fixedly connected to the die head through a plurality of reinforcing plates distributed in a circular array, the other side of the bonding plate is connected to the mounting hole on the movable plate through a plurality of bolts distributed in a circular array, and the bolts are staggered with the reinforcing plates.

[0014] Preferably, the female mold includes a placement plate, which is adapted to the placement groove on the base, a female mold seat is fixed to one end of the upper surface of the placement plate, a limiting groove is provided at the bottom end of the female mold seat, the limiting groove corresponds to the limiting plate, and both sides of one side of the female mold seat are fixedly connected to the placement plate through a second reinforcing plate.

[0015] Preferably, the other end of the upper surface of the placing plate is fixedly connected to a fixing plate by bolts, and the fixing plate is arranged as an L-shaped structure. A through groove is opened at the upper end of the fixing plate, and a push rod is connected through the inside of the through groove. A baffle is fixed to the outside of one end of the push rod, and one side of the baffle is connected to the fixing plate through a second spring.

[0016] Beneficial Effects

[0017] The utility model provides a multi-station cold heading forming device for high-strength bolts. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The multi-station cold heading forming device for high-strength bolts is provided with a driving member on the base, which can drive the male die to move so that the male die and the female die cooperate to perform bolt cold heading forming. The male die is mounted on a movable plate on the driving member by bolts, so that the male die is easy to disassemble and replace when it is worn or needs to be replaced. At the same time, a plurality of male die stations are provided on the movable plate, thereby improving the production efficiency of the device.

[0019] 2. The multi-station cold heading forming device for high-strength bolts is provided with a placement groove on the base, and the placement plate on the female mold is arranged in the placement groove. The limiting plates on both sides of the placement groove can limit the placement plate in the placement groove, so that the female mold can be installed stably. At the same time, the limiting plates are arranged as movable structures, so that the female mold seat on the female mold can be quickly replaced when worn. A push rod is arranged on the fixed plate on the female mold. The push rod cooperates with the second spring to extrude the cold-headed bolts out of the mold, which is convenient for material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the driving member of the utility model;

[0023] Figure 4 This is a schematic diagram of the male mold structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the female mold structure of the utility model.

[0025] In the figure: base 1, fixed plate 11, hydraulic cylinder 12, dovetail slide 13, placement groove 14, limit plate 15, limit slider 16, limit slide 17, first spring 18, driving member 2, movable plate 21, first reinforcing plate 22, positioning groove 23, mounting hole 24, male mold 3, fitting plate 31, positioning block 32, die head 33, reinforcing plate 34, bolt 35, female mold 4, placement plate 41, female mold seat 42, limit groove 43, second reinforcing plate 44, fixed plate 45, through groove 46, push rod 47, baffle 48, second spring 49. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides two technical solutions:

[0028] Figure 1-4 The first embodiment is shown: a multi-station cold heading forming device for high-strength bolts 35, comprising:

[0029] The base 1 has a fixed plate 4511 fixed on one side of the upper surface of the base 1, and hydraulic cylinders 12 are fixed on both ends of the fixed plate 4511. A plurality of equally spaced dovetail grooves 13 are provided in the middle of the upper surface of the base 1, and a plurality of equally spaced placement grooves 14 are provided on the other side of the upper surface of the base 1. Limiting plates 15 are provided on both sides of both ends of the placement grooves 14. A limiting slider 16 is fixed on one end of the lower surface of the limiting plate 15, and a limiting groove 17 is correspondingly provided on the upper surface of the base 1. One end of the limiting slider 16 is connected to the inner wall of one end of the limiting groove 17 through a first spring 18. The setting of the limiting slider 16 and the limiting groove 17 enables the limiting plate 15 to move without being separated from the base 1, and the setting of the first spring 18 enables the limiting plate 15 to automatically reset.

[0030] A driving member 2 is provided at the middle of the upper surface of the base 1, and the output end of the hydraulic cylinder 12 is connected to the driving member 2. The driving member 2 includes a movable plate 21 provided at the middle of the upper surface of the base 1. The movable plate 21 is provided as an L-shaped structure. A plurality of equally spaced first reinforcing plates 22 are provided on one side of the movable plate 21 to improve the strength of the movable plate 21. A plurality of equally spaced dovetail sliders are fixed to the bottom of the movable plate 21. The dovetail sliders are located in the dovetail slide groove 13 to guide the movable plate 21 so as to maintain horizontal linear movement while preventing the movable plate 21 from separating from the base 1. A plurality of equally spaced positioning grooves 23 are provided on the other side of the movable plate 21, and a plurality of mounting holes 24 distributed in a ring array are provided around the positioning groove 23.

[0031] The male mold 3 is provided with multiple male molds 3, and the multiple male molds 3 are all installed on the driving member 2. The male mold 3 includes a bonding plate 31 bonded to one side of the movable plate 21, a positioning block 32 is fixed in the middle of one side of the bonding plate 31, the positioning block 32 is adapted to the positioning groove 23, the positioning block 32 and the positioning groove 23 are both arranged in a cross-shaped structure, which plays a positioning role and improves the connection strength of the bonding plate 31, a die head 33 is fixed in the middle of the other side of the bonding plate 31, the other side of the bonding plate 31 is fixedly connected to the die head 33 through a plurality of reinforcing plates 34 distributed in an annular array, which improves the connection strength between the die head 33 and the bonding plate 31, the other side of the bonding plate 31 is connected to the mounting hole 24 on the movable plate 21 through a plurality of bolts 35 distributed in an annular array, the bolts 35 and the reinforcing plates 34 are staggered, and the arrangement of the bolts 35 makes the bonding plate 31 stable to install and can be disassembled and replaced.

[0032] Figure 1 and 5 The second embodiment is shown, which is mainly different from the first embodiment in that it includes a female mold 4, which is arranged on the other side of the upper surface of the base 1, and the female mold 4 is provided with multiple female molds 4, which are adapted to the male mold 3, and the female mold 4 includes a placement plate 41, which is adapted to the placement groove 14 on the base 1, and a female mold seat 42 is fixed to one end of the upper surface of the placement plate 41, and a limiting groove 43 is provided at the bottom end of the female mold seat 42, and the limiting groove 43 corresponds to the limiting plate 15, and the limiting plate 15 cooperates with the limiting groove 43 to limit the placement plate 41 in the placement groove 14, so that the female mold 4 is installed stably, and the female mold seat 42 Both sides of one side are fixedly connected to the placement plate 41 by the second reinforcing plate 44, so as to improve the compressive strength of the female mold base 42; the other end of the upper surface of the placement plate 41 is fixedly connected to the fixing plate 4511 by bolts 35; the fixing plate 4511 is arranged in an L-shaped structure; a through groove 46 is provided at the upper end of the fixing plate 4511; a push rod 47 is connected through the inside of the through groove 46; a baffle 48 is fixed to the outside of one end of the push rod 47; one side of the baffle 48 is connected to the fixing plate 4511 by a second spring 49; the push rod 47 cooperates with the spring to push out the bolt 35 in the female mold base 42, so as to improve the demoulding efficiency of the device.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0034] When in use, first place the material of the bolt 35 in the die groove on the female die seat 42, then start the hydraulic cylinder 12, the hydraulic cylinder 12 drives the movable plate 21 to move, and the movable plate 21 drives the die head 33 to move until the die head 33 is inserted into the die groove, and the material is cold headed. In this process, the material is extruded and deformed into a bolt 35 blank, and the push rod 47 is pushed out of the outlet of the die groove, so that the second spring 49 is compressed and stressed. After cold heading, the movable plate 21 is reset by the hydraulic cylinder 12. At this time, the push rod 47 and the second spring 49 cooperate to push the bolt 35 blank out of the die groove, achieving the demoulding effect. When the mold needs to be replaced or the mold is damaged, the bolt 35 on the bonding plate 31 is removed at this time, and then the die head 33 is removed and replaced, and the limit plate 15 is moved at the same time until the limit plate 15 is separated from the placement plate 41. At this time, the placement plate 41 can be moved out of the placement groove 14, and the female die seat 42 on the placement plate 41 can be removed and replaced.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station cold heading forming device for high-strength bolts, characterized in that ,include: A base, a fixing plate is fixed on one side of the upper surface of the base, and hydraulic cylinders are fixed on both ends of the fixing plate; A driving member, the driving member is arranged in the middle of the upper surface of the base, and the output end of the hydraulic cylinder is connected to the driving member; A male mold, wherein a plurality of male molds are provided, and the plurality of male molds are all mounted on the driving member; The female mold is arranged on the other side of the upper surface of the base, and there are multiple female molds, and the multiple female molds are adapted to the male mold.

2. The multi-station cold heading forming device for high-strength bolts according to claim 1, characterized in that: A plurality of dovetail grooves with equal spacing are provided in the middle of the upper surface of the base, a plurality of placement grooves with equal spacing are provided on the other side of the upper surface of the base, limiting plates are provided on both sides of both ends of the placement grooves, a limiting slider is fixed to one end of the lower surface of the limiting plate, a limiting groove is correspondingly provided on the upper surface of the base, and one end of the limiting slider is connected to the inner wall of one end of the limiting groove through a first spring.

3. The multi-station cold heading forming device for high-strength bolts according to claim 1, characterized in that: The driving member includes a movable plate arranged in the middle of the upper surface of the base, a plurality of first reinforcing plates distributed at equal intervals are arranged on one side of the movable plate, a plurality of dovetail sliders distributed at equal intervals are fixed to the bottom of the movable plate, the dovetail sliders are located in dovetail slide grooves, a plurality of positioning grooves distributed at equal intervals are opened on the other side of the movable plate, and a plurality of mounting holes distributed in a circular array are opened around the positioning grooves.

4. The multi-station cold heading forming device for high-strength bolts according to claim 1, characterized in that: The male mold includes a bonding plate bonded to one side of the movable plate, a positioning block is fixed in the middle of one side of the bonding plate, the positioning block is adapted to the positioning groove, a die head is fixed in the middle of the other side of the bonding plate, the other side of the bonding plate is fixedly connected to the die head through a plurality of reinforcing plates distributed in a circular array, the other side of the bonding plate is connected to the mounting hole on the movable plate through a plurality of bolts distributed in a circular array, and the bolts are staggered with the reinforcing plates.

5. The multi-station cold heading forming device for high-strength bolts according to claim 1, characterized in that: The female mold includes a placement plate, which is adapted to the placement groove on the base. A female mold seat is fixed to one end of the upper surface of the placement plate. A limiting groove is provided at the bottom end of the female mold seat, and the limiting groove corresponds to the limiting plate. Both sides of one side of the female mold seat are fixedly connected to the placement plate through a second reinforcing plate.

6. The multi-station cold heading forming device for high-strength bolts according to claim 5, characterized in that: The other end of the upper surface of the placing plate is fixedly connected to a fixing plate by bolts, and the fixing plate is arranged in an L-shaped structure. A through slot is opened at the upper end of the fixing plate, and a push rod is connected through the inside of the through slot. A blocking plate is fixed to the outer side of one end of the push rod, and one side of the blocking plate is connected to the fixing plate by a second spring.

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