CN211218512U - Ejecting structure for shortening ejection stroke in cold heading - Google Patents

Abstract

The utility model discloses an ejecting structure of ejecting stroke is shortened in cold-heading, including the master die, the one end fixed mounting of master die has the cushion, and the inside position department that is close to the cushion of master die is provided with the stretch rod cover, be provided with tensile stick in the master die, and the one end of tensile stick runs through in the stretch rod cover, run through being provided with the ejector sleeve in the cushion, and the one end and the stretch rod fixed connection of ejector sleeve, the other end fixed mounting of ejector sleeve has the ejector sleeve cover, and one side of ejector sleeve cover is provided with clamping structure, the terminal fixed mounting of tensile stick has buffer structure. Cold-heading shorten ejecting structure of ejecting stroke, adopt this structure to carry out ejecting work piece, practiced thrift use cost, shortened ejecting stroke simultaneously, through the buffer structure who sets up, can effectual formation buffering, and protected tensile stick, ensured workpiece surface's planarization again, adopt clamping structure, stability when can improving the ejector sleeve and remove, effect when reinforcing structure uses.

Description

Ejecting structure for shortening ejection stroke in cold heading

Technical Field

The utility model relates to an ejecting structure field, in particular to cold-heading shortens ejecting structure of ejecting stroke.

Background

The cold heading process is one of the novel processes for machining less and no cutting metal under pressure. The method is a processing method which utilizes the plastic deformation generated by metal under the action of external force and redistributes and transfers the volume of the metal by means of a die so as to form the required part or blank. The cold heading process is most suitable for producing standard fasteners such as bolts, screws, nuts, rivets, pins and the like, and when a mold is used for cold heading, many structures are required, wherein an ejection structure exists; in traditional ejecting structure, the structure is complicated, and the processing cost is higher to ejecting stroke is great, is unfavorable for the drawing of patterns of work piece, and in traditional ejecting structure, the ejector sleeve removes in the pipe box, does not have other clamping structure, and stability is relatively poor, and the tensile stick top that is used for ejecting the work piece can produce certain collision with the work piece moreover, uses for a long time and can lead to the wearing and tearing of tensile stick.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides the cold-heading shortens ejecting structure of ejecting stroke, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the ejection structure with shortened ejection stroke in cold heading comprises a main die, wherein a cushion block is fixedly mounted at one end of the main die, a stretching rod sleeve is arranged at a position, close to the cushion block, inside the main die, a stretching rod is arranged in the main die, one end of the stretching rod runs through the stretching rod sleeve, a push pipe is arranged in the cushion block in a penetrating mode, one end of the push pipe is fixedly connected with the stretching rod, a push pipe sleeve is fixedly mounted at the other end of the push pipe, a clamping structure is arranged on one side of the push pipe sleeve, and a buffer structure is fixedly mounted at the tail end of the stretching rod.

Preferably, the clamping structure includes a fixing frame, an inner cavity, a spring and a clamping pad, the inner cavity is provided on the fixing frame, the spring is fixedly mounted in the inner cavity on the fixing frame, the inner side of the clamping pad is located in the inner cavity, and the clamping pad is connected with the tail end of the spring.

Preferably, buffer structure includes cavity, bolster, rubber pad and connecting block, the cavity is seted up on tensile stick, and fixed mounting has the bolster in the cavity, the one end fixed mounting of rubber pad has the connecting block, and the one end of connecting block is located the cavity, the connecting block is connected with the bolster.

Preferably, the bolster includes first fixed block, second fixed block, shell fragment, first stopper and second stopper, first fixed block is connected with tensile stick, second fixed block and connecting block fixed connection, and be connected with the shell fragment between second fixed block and the first fixed block, the inboard fixed mounting of first fixed block has first stopper, the inboard and the corresponding position department fixed mounting of first stopper of second fixed block has the second stopper.

Preferably, the cushion block is fixedly connected with the main die through a screw.

Compared with the prior art, the utility model discloses following beneficial effect has: this ejecting structure of cold-heading shortening ejection stroke adopts this structure to carry out ejecting work piece, has practiced thrift use cost, has shortened ejection stroke simultaneously, through the buffer structure who sets up, can effectual formation buffering, and protected tensile stick, has ensured the planarization on workpiece surface again, adopts clamping structure, stability when can improving the ejector sleeve and remove, effect when reinforcing structure uses.

Drawings

Fig. 1 is a schematic view of the overall structure of the ejection structure for shortening the ejection stroke in cold heading of the present invention;

fig. 2 is an internal structure schematic diagram of an ejection structure clamping structure for shortening an ejection stroke in cold heading of the present invention;

fig. 3 is a schematic structural view of the buffering structure of the ejection structure for shortening the ejection stroke in cold heading of the present invention;

fig. 4 is the utility model discloses the structure schematic diagram of the ejecting structure bolster of ejecting stroke is shortened in cold-heading.

In the figure: 1. performing primary molding; 2. cushion blocks; 3. stretching the rod sleeve; 4. stretching the rod; 5. pushing the tube; 6. pushing the pipe sleeve; 7. a clamping structure; 701. a fixed mount; 702. an inner cavity; 703. a spring; 704. a clamping pad; 8. a buffer structure; 801. a cavity; 802. a buffer member; 8021. a first fixed block; 8022. a second fixed block; 8023. a spring plate; 8024. a first stopper; 8025. a second limiting block; 803. a rubber pad; 804. and (4) connecting the blocks.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, the ejection structure for shortening the ejection stroke by cold heading comprises a main die 1, wherein a cushion block 2 is fixedly mounted at one end of the main die 1, a stretching rod sleeve 3 is arranged at a position close to the cushion block 2 inside the main die 1, a stretching rod 4 is arranged in the main die 1, one end of the stretching rod 4 penetrates through the stretching rod sleeve 3, a push pipe 5 is arranged in the cushion block 2 in a penetrating manner, one end of the push pipe 5 is fixedly connected with the stretching rod 4, the other end of the push pipe 5 is fixedly mounted with a push pipe sleeve 6, a clamping structure 7 is arranged at one side of the push pipe sleeve 6, and a buffer structure 8 is fixedly mounted at the tail end of the stretching rod 4;

the clamping structure 7 comprises a fixing frame 701, an inner cavity 702, a spring 703 and a clamping pad 704, wherein the fixing frame 701 is provided with the inner cavity 702, the spring 703 is fixedly arranged on the fixing frame 701 in the inner cavity 702, the inner side of the clamping pad 704 is arranged in the inner cavity 702, and the clamping pad 704 is connected with the tail end of the spring 703; the buffer structure 8 comprises a cavity 801, a buffer piece 802, a rubber pad 803 and a connecting block 804, wherein the cavity 801 is arranged on the stretching rod 4, the buffer piece 802 is fixedly arranged in the cavity 801, the connecting block 804 is fixedly arranged at one end of the rubber pad 803, one end of the connecting block 804 is positioned in the cavity 801, and the connecting block 804 is connected with the buffer piece 802; the buffer member 802 includes a first fixed block 8021, a second fixed block 8022, an elastic piece 8023, a first limit block 8024 and a second limit block 8025, the first fixed block 8021 is connected with the stretching rod 4, the second fixed block 8022 is fixedly connected with the connecting block 804, the elastic piece 8023 is connected between the second fixed block 8022 and the first fixed block 8021, the first limit block 8024 is fixedly installed on the inner side of the first fixed block 8021, and the second limit block 8025 is fixedly installed on the inner side of the second fixed block 8022 at a position corresponding to the first limit block 8024; the cushion block 2 is fixedly connected with the main die 1 through screws.

It should be noted that, the utility model relates to an ejection structure for shortening the ejection stroke in cold heading, during assembly, the cushion block 2 is installed on the main die 1, and the structure of the stretch rod sleeve 3 and the stretch rod 4 is arranged in the main die 1, after all the components are assembled, the worker starts to use the die, when in use, the die is closed by the movable die and the fixed die, liquid raw materials are injected into the die cavity, the raw materials are molded in the die cavity, after molding, the movable die and the fixed die are separated, the push tube 5 moves in the push tube sleeve 6 under the action of the driving mechanism, meanwhile, the push tube 5 drives the stretch rod 4 to move, when the push tube 5 moves, the clamping pad 704 in the clamping structure 7 is tightly attached to the push tube 5 under the action of the spring on the fixing frame 701, thereby the clamping pad 704 generates a certain pressure on the push tube 5, further, the stability of the push tube 5 in the moving process is ensured, the precision degree during ejection is ensured, the effect of the structure is improved, along with the movement of the stretching rod 4 and the push pipe 5, the buffer structure 8 at the tail end of the stretching rod 4 contacts the workpiece and generates thrust to the workpiece, the workpiece is separated from the main die 1 under the action of the thrust, so that the ejection work is completed, when the buffer structure 8 contacts the workpiece, the rubber pad 803 receives impact force, the rubber pad 803 is stressed to drive the connecting block 804 to do work together with the buffer component 802 in the cavity 801, the elastic sheet 8023 in the buffer component 802 is compressed to form effective buffering together with the first fixing block 8021 and the second fixing block 8022, so that the stretching rod 4 is ensured to be intact, the abrasion is avoided, the smoothness of the surface of the workpiece can also be ensured, when the buffer component 802 forms buffering, the first limit block 8024 and the second limit block 8025 can avoid the elastic sheet 8023 from being compressed too much to be damaged, the use effect is ensured, and when the workpiece is ejected, the push pipe 5 drives the stretching rod, and then the next workpiece is formed and demoulded.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. Ejecting structure of ejecting stroke is shortened in cold-heading, its characterized in that: including master die (1), the one end fixed mounting of master die (1) has cushion (2), and the inside position department that is close to cushion (2) of master die (1) is provided with stretch rod cover (3), be provided with stretch rod (4) in master die (1), and the one end of stretch rod (4) runs through in stretch rod cover (3), it is provided with push away pipe (5) to run through in cushion (2), and the one end and the stretch rod (4) fixed connection of push away pipe (5), the other end fixed mounting of push away pipe (5) has push away pipe box (6), and pushes away one side of pipe box (6) and be provided with clamping structure (7), the terminal fixed mounting of stretch rod (4) has buffer structure (8).

2. The cold heading ejection structure with shortened ejection stroke according to claim 1, wherein: clamping structure (7) are including mount (701), inner chamber (702), spring (703) and centre gripping pad (704), inner chamber (702) have been seted up on mount (701), and lie in inner chamber (702) fixed mounting on mount (701) and have spring (703), the inboard of centre gripping pad (704) is located inner chamber (702), and centre gripping pad (704) is connected with the end of spring (703).

3. The cold heading ejection structure with shortened ejection stroke according to claim 1, wherein: buffer structure (8) include cavity (801), bolster (802), rubber pad (803) and connecting block (804), cavity (801) are seted up on tensile stick (4), and fixed mounting has bolster (802) in cavity (801), the one end fixed mounting of rubber pad (803) has connecting block (804), and the one end of connecting block (804) is located cavity (801), connecting block (804) are connected with bolster (802).

4. The cold heading ejection structure with shortened ejection stroke according to claim 3, wherein: bolster (802) include first fixed block (8021), second fixed block (8022), shell fragment (8023), first stopper (8024) and second stopper (8025), first fixed block (8021) is connected with tensile stick (4), second fixed block (8022) and connecting block (804) fixed connection, and be connected with shell fragment (8023) between second fixed block (8022) and first fixed block (8021), the inboard fixed mounting of first fixed block (8021) has first stopper (8024), the inboard of second fixed block (8022) and the corresponding position department fixed mounting of first stopper (8024) have second stopper (8025).

5. The cold heading ejection structure with shortened ejection stroke according to claim 1, wherein: the cushion block (2) is fixedly connected with the main die (1) through screws.

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