CN213856370U

CN213856370U - Cable drawing die

Info

Publication number: CN213856370U
Application number: CN202022917606.5U
Authority: CN
Inventors: 林耿祥; 姚鸣; 唐孝平; 古普科
Original assignee: Chengdu Atlantic Wires And Cables Co ltd
Current assignee: Chengdu Atlantic Wires And Cables Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-03
Anticipated expiration: 2030-12-08

Abstract

A cable drawing die, comprising: the mold core comprises a cylinder, a first fan-shaped hole is formed in the end face of the cylinder in a penetrating mode, a second fan-shaped hole is formed in the end face of the cylinder in a penetrating mode, a pair of round holes are formed in the end face of the cylinder in a penetrating mode, the second fan-shaped holes are arranged in the cylinder in a symmetrical structure, the round holes are arranged in the cylinder in a symmetrical structure and located between the first fan-shaped hole and the second fan-shaped hole, the cross sections of the first fan-shaped hole and the second fan-shaped hole are equal in size, each inner angle of the first fan-shaped hole and each inner angle of the second fan-shaped hole are cambered surfaces, and the positions of the same end edges of the first fan-shaped hole, the second fan-shaped hole and the round holes are cambered surfaces; and the die sleeve is sleeved on the die core and used for fixing the die core. The utility model discloses a sticis fan-shaped drawing die and replace and sticis fan-shaped pinch roller shaping, the bright and clean no overlap burr in surface, the manufacturability is good, sticiss shaping wire core cross-sectional dimension stable, and convenient fixed has stronger practicality.

Description

Cable drawing die

Technical Field

The utility model relates to a relevant technical field of cable production facility especially relates to a cable drawing die utensil.

Background

The core structures of the 0.6/1kV low-voltage power cable are all pressed to be fan-shaped by pressing wheels. The structure is simple and convenient to form, the cross section of the product can be adjusted, and the structure is widely used in the industry. However, the sector pressing wheel is pressed and formed completely by pressing the upper pressing wheel die and the lower pressing wheel die to adjust the section of the product, so that the operation randomness is high, and the stability of the section of the product is poor. Each compression of the belt head often requires several rounds of adjustment to achieve the desired cross-section. And the pressing wheel is compressed in the production process and may be loosened due to vibration, so that the section of the product is enlarged compared with that of a belt head in detection, and production waste is caused. In addition, the core of the fan-shaped press wheel profiling structure has the defect of flash and burr at the fan angle, and the condition is particularly obvious when the small-section fan-shaped core of 70mm2 or below is pressed tightly. Due to the occurrence of flash and burr, the electrical performance of the insulated wire core is poor, and the product quality can be ensured only by increasing the insulation thickness. The insulation thickness of the wire core of the cable with the fan-shaped pressing wheel pressing structure is usually about 0.2mm larger than the nominal insulation thickness, the outer diameter of the formed cable is increased, the outer diameter of the cable is increased accordingly, and the product cost is correspondingly increased. This is very disadvantageous to the market competition that is currently increasing.

For stabilizing the cable core cross-section, reduce the burr, circular sticising sinle silk structure has appeared on the market. Although the structure has the advantages of stable product section and smooth and burr-free product surface, the outer diameter of the compressed round wire core is obviously increased compared with a fan-shaped compressed structure when the compressed round wire core is compressed to form a cable, and particularly, the large section also increases the cable sheath material, so that the cable cost is increased. Therefore, this structure is not fully generalized.

Disclosure of Invention

The utility model provides a cable drawing die utensil to solve above-mentioned prior art not enough, adopt to sticis sector drawing die utensil and replace and sticis fan-shaped pinch roller shaping, the bright and clean no overlap burr in surface, the manufacturability is good, sticiss shaping wire core cross-section size stable, and convenient fixed has stronger practicality.

In order to realize the purpose of the utility model, the following technologies are adopted:

a cable drawing die, comprising:

the mold core comprises a cylinder, a first fan-shaped hole is formed in the end face of the cylinder in a penetrating mode, a second fan-shaped hole is formed in the end face of the cylinder in a penetrating mode, a pair of round holes are formed in the end face of the cylinder in a penetrating mode, the second fan-shaped holes are arranged in the cylinder in a symmetrical structure, the round holes are arranged in the cylinder in a symmetrical structure and located between the first fan-shaped hole and the second fan-shaped hole, the cross sections of the first fan-shaped hole and the second fan-shaped hole are equal in size, each inner angle of the first fan-shaped hole and each inner angle of the second fan-shaped hole are cambered surfaces, and the positions of the same end edges of the first fan-shaped hole, the second fan-shaped hole and the round holes are cambered surfaces;

and the die sleeve is sleeved on the die core and used for fixing the die core.

Furthermore, the cylinder outside is the circumference array and is equipped with the flange, and the flange both ends all are equipped with cardboard two pairs, and what the flange all run through takes shape there is the card hole.

Furthermore, the clamping plate is of an arc structure, and the clamping holes are of a triangular structure.

Further, the die sleeve comprises a circular ring sleeved at one end of the cylinder, the circular ring is provided with outer convex plates in a circumferential array, the outer convex plates are vertically provided with connecting plates, and the other end of each connecting plate is provided with an outer ring;

the inner wall of the circular ring is formed with a clamping table in a circumferential array, the other end of the clamping table is formed with a pair of clamping grooves, and when the mold core is arranged in the mold sleeve, the clamping plates on one side are clamped in the clamping grooves;

the inside taking shape that is the circumference array of outer loop has interior platform of stretching, and interior platform of stretching is unanimous with ka tai quantity, and the one-to-one, and the other end of interior platform of stretching all is formed with interior groove a pair of that stretches, and when the mold core was located in the die sleeve, the cardboard that is located the opposite side all blocked and locates in the groove of stretching.

Furthermore, the circular ring is provided with locking mechanisms in a circumferential array, the locking mechanisms are consistent with the clamping tables in number and are all positioned at the clamping tables, and when the mold core is arranged in the mold sleeve, the locking mechanisms are used for locking the mold core.

Further, locking mechanical system is including locating the telescopic link of ring a pair of, and the other end of telescopic link all is equipped with the end plate, and the spring has all been worn to the telescopic link, and the spring other end all is equipped with the arc board, and the arc board all is equipped with the inserted bar, and when the mold core was located in the die sleeve, the inserted bar was worn in the card hole.

Furthermore, the inserted bar is in a triangular structure.

The technical scheme has the advantages that:

the utility model discloses a sticis fan-shaped drawing die and replace and sticis fan-shaped pinch roller shaping, the bright and clean no overlap burr in surface, the manufacturability is good, sticiss shaping wire core cross-sectional dimension stable, and convenient fixed has stronger practicality.

Drawings

Fig. 1 shows a perspective view of a first embodiment.

Fig. 2 shows a perspective view of the second embodiment.

Fig. 3 shows a three-dimensional structure of one embodiment.

Fig. 4 shows a perspective structural view of one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to 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.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

Furthermore, the terms "substantially", and the like are intended to indicate that the relative terms are not necessarily strictly required, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but because absolute equality is difficult to achieve in actual production and operation, certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 to 4, a cable drawing die includes: the mold core 1 comprises a cylinder 10, a first sector-shaped hole 100 is formed in the end face of the cylinder 10 in a penetrating mode, a second sector-shaped hole 102 is formed in the end face of the cylinder 10 in a penetrating mode, a pair of round holes 101 is formed in the end face of the cylinder 10 in a penetrating mode, the second sector-shaped hole 102 is arranged in the cylinder 10 in a symmetrical mode between the round holes 101, the round holes 101 are located between the first sector-shaped hole 100 and the second sector-shaped hole 102, the cross sections of the first sector-shaped hole 100 and the second sector-shaped hole 102 are equal in size, each inner angle of the first sector-shaped hole 100 and the second sector-shaped hole 102 is an arc surface, the same end edges of the first sector-shaped hole 100, the second sector-shaped hole 102 and the round holes 101 are arc surfaces, a convex plate 11 is arranged on the outer side of the cylinder 10 in a circumferential array, two pairs of clamping plates 110 are arranged at two ends of the convex plate 11, and a clamping hole 111 is formed in the convex plate 11 in a penetrating mode. The clamping plate 110 is arc-shaped, and the clamping hole 111 is triangular.

And the mold sleeve 2 is sleeved on the mold core 1 and used for fixing the mold core. The die sleeve 2 comprises a circular ring 20 sleeved at one end of the cylinder 10, the circular ring 20 is provided with outer convex plates 21 in a circumferential array, the outer convex plates 21 are vertically provided with connecting plates 22, and the other end of each connecting plate 22 is provided with an outer ring 23;

the inner wall of the ring 20 is formed with a pair of clamping platforms 200 in a circumferential array, the other ends of the clamping platforms 200 are formed with a pair of clamping grooves 201, and when the mold core 1 is arranged in the mold sleeve 2, the clamping plates 110 on one side are clamped in the clamping grooves 201. The inner extension platforms 230 are formed in the outer ring 23 in a circumferential array, the inner extension platforms 230 are consistent with the clamping platforms 200 in number and are in one-to-one correspondence, the inner extension grooves 231 are formed at the other ends of the inner extension platforms 230, and when the mold core 1 is arranged in the mold sleeve 2, the clamping plates 110 on the other sides are clamped in the inner extension grooves 231. The circular ring 20 is provided with locking mechanisms 24 in a circumferential array, the number of the locking mechanisms 24 is the same as that of the clamping tables 200, and the locking mechanisms 24 and the clamping tables 200 are all positioned at the clamping tables 200 and used for locking the mold core 1 when the mold core 1 is arranged in the mold sleeve 2. The locking mechanism 24 comprises a pair of telescopic rods 240 arranged on the ring 20, the other ends of the telescopic rods 240 are provided with end plates 241, the telescopic rods 240 are provided with springs 242, the other ends of the springs 242 are provided with arc plates 243, the arc plates 243 are provided with inserting rods 244, and when the mold core 1 is arranged in the mold sleeve 2, the inserting rods 244 are arranged in the clamping holes 111. The plunger 244 has a triangular configuration.

The drawing die is mainly used for drawing and forming 0.6/1kV low-voltage power cable cables, and is formed by adopting a pressing sector drawing die to replace a pressing sector pressing wheel, so that the surface is smooth and free of flash and burr.

The device is in concrete implementation, still convenient location is fixed, because draw the wearing and tearing that the die cavity will be drawn to inevitable cause in the long-term drawing process of cable, this kind of wearing and tearing will produce the burr on the surface of cable in the use in later stage, and the drawing size inconvenient control of cable after wearing and tearing to the production efficiency of cable has been reduced, thereby need change the mold core after drawing of a period of time, perhaps reprocess the mold core, consequently draw the convenient change of mold core and will cause great influence to the production efficiency of this kind of cable too.

In specific operation process, first sector hole 100, second sector hole 102 and round hole 101 are drawing die cavity, simultaneously in order to prevent that the terminal surface department of mold core 1 inlet wire end from causing the fish tail to the wire, consequently all set up first sector hole 100, the same end border department of second sector hole 102 and round hole 101 to the cambered surface, simultaneously, all set up to the cambered surface at every interior angle of first sector hole 100 and second sector hole 102, the cambered surface can prevent that the existence of angle from producing burr and overlap in drawing the in-process, simultaneously, the cambered surface can also reduce first sector hole 100 and second sector hole 102 internal tension, thereby prevent that cylinder 10 from splitting from every interior angle. When the mold core is replaced, that is, when the mold core 1 is inserted into the mold sleeve 2, the arc plate 243 is pulled out outwards along the telescopic rod 240 in the pulling-out process, the spring 242 is compressed, meanwhile, the insert rod 244 is pulled out outwards, the mold core 1 limited and fixed by the insert rod 244 is cancelled, the insert rod 244 is arranged to be in a triangular structure, the stability of positioning and fixing of the insert rod 244 can be effectively improved, meanwhile, after the insert rod 244 is pulled out, the mold core 1 is rotated clockwise or counterclockwise, in the rotating process, the clamping plate 110 rotates out from the inner extension groove 231 and the clamping groove 201, and finally, the convex plate 11 on the outer wall of the mold core 1 loses the limitation of the clamping table 200 and the inner extension table 230, and then the mold core 1 is taken out and replaced, wherein the clamping plate 110, the inner extension groove 231 and the clamping groove 201 are used for improving the stability when the mold core 1 is fixed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A cable drawing die, comprising:

the mold core (1) comprises a cylinder (10), a first fan-shaped hole (100) is formed in the end face of the cylinder (10) in a penetrating mode, a second fan-shaped hole (102) is formed in the end face of the cylinder (10) in a penetrating mode, a pair of round holes (101) are formed in the end face of the cylinder (10) in a penetrating mode, the second fan-shaped hole (102) is arranged in the cylinder (10) in a symmetrical structure, the round holes (101) are arranged between the first fan-shaped hole (100) and the second fan-shaped hole (102) in a symmetrical structure, the cross sections of the first fan-shaped hole (100) and the second fan-shaped hole (102) are equal in size, each inner angle of the first fan-shaped hole (100) and the second fan-shaped hole (102) is an arc face, and the edge positions of the same end of the first fan-shaped hole (100), the second fan-shaped hole (102) and the round holes (101) are arc faces;

and the die sleeve (2) is sleeved on the die core (1) and used for fixing the die core.

2. The cable drawing die according to claim 1, wherein the outer side of the cylinder (10) is provided with a circumferential array of convex plates (11), two pairs of clamping plates (110) are arranged at two ends of each convex plate (11), and the convex plates (11) are provided with clamping holes (111) formed therethrough.

3. The cable drawing die of claim 2, wherein the clamping plate (110) has an arc-shaped structure and the clamping hole (111) has a triangular structure.

4. The cable drawing die according to claim 3, wherein the die sleeve (2) comprises a circular ring (20) sleeved at one end of the cylinder (10), the circular ring (20) is provided with outer convex plates (21) in a circumferential array, the outer convex plates (21) are vertically provided with connecting plates (22), and the other end of each connecting plate (22) is provided with an outer ring (23);

the inner wall of the circular ring (20) is formed with clamping tables (200) in a circumferential array, a pair of clamping grooves (201) are formed at the other ends of the clamping tables (200), and when the mold core (1) is arranged in the mold sleeve (2), the clamping plates (110) on one side are clamped in the clamping grooves (201);

the inside taking shape that is the circumference array of outer ring (23) has interior platform (230) of stretching, and interior platform (230) of stretching is unanimous with card platform (200) quantity, and the one-to-one, and the other end of interior platform (230) of stretching all is formed with interior groove (231) and is a pair of, when mold core (1) was located in die sleeve (2), was located the inside groove (231) of stretching of card board (110) of opposite side and all blocks and locate.

5. Cable drawing die according to claim 4, wherein the circular ring (20) is provided with locking means (24) in a circumferential array, the locking means (24) corresponding to the number of the clamping tables (200) and being located at the clamping tables (200) for locking the mould core (1) when the mould core (1) is arranged in the mould housing (2).

6. The cable drawing die of claim 5, wherein the locking mechanism (24) comprises a pair of telescopic rods (240) arranged on the circular ring (20), the other ends of the telescopic rods (240) are provided with end discs (241), the telescopic rods (240) are provided with springs (242) in a penetrating mode, the other ends of the springs (242) are provided with arc plates (243), the arc plates (243) are provided with inserting rods (244), and when the mold core (1) is arranged in the mold sleeve (2), the inserting rods (244) penetrate through the clamping holes (111).

7. The cable drawing die of claim 6, wherein the plunger (244) is of a triangular configuration.