Forming die for cable production

Abstract

The utility model discloses a forming die for cable production, which relates to the technical field of cable production, and is characterized in that a clamping mechanism comprises a spring, a telescopic mechanism comprises a rotating shaft, one end of the rotating shaft penetrates through a connecting piece to be connected with a turntable, and the outer surface of the rotating shaft is rotatably connected with the inner wall of a first circular ring; the outer surface of the first circular ring is connected with a plurality of groups of sliding rails, so that the rotary table can be driven to rotate by rotating the rotary shaft, the vertical rods in the sliding grooves are driven to slide, the vertical rods can only slide in the directions of the sliding rails under the limitation of the sliding rails, clamping pieces are inserted into clamping grooves, then bolts penetrate through threaded holes, and the first die sleeve and the second die sleeve are connected; under the limiting of the clamping groove, the concentricity between the die sleeve and the die core is ensured, so that the problems that the concentricity between the die sleeve and the die core is difficult to adjust, the depths of each group of bolts entering the first die sleeve are different, the eccentricity is serious, and the wall thicknesses of cables are inconsistent are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable production technical field more specifically, it relates to a cable production is with forming mould. BACKGROUND

[0002] Cable forming mould is the important tool in the wire and cable manufacturing process, it is used for giving wire and cable specific shape and size. In the production process of cable, the insulating material is evenly extruded around the core and forms the insulating layer of cable, then possibly adds one or more sheath layers to provide additional protection. The design of forming mould determines the thickness of insulating layer and sheath layer, the outer diameter of cable and the overall structure of cable.

[0003] Extrusion mould is one of the types of cable extrusion mould, and the extrusion mould is also called pressure type mould, and its feature is that the core of the mould does not have a tubular supporting part, that is, the core of the mould does not form a complete pipe cavity. In the extrusion process, the plastic or rubber material is first heated and pressurized, then extruded through the hole of the mould, and tightly attached to the core to form the required insulating layer or sheath layer. This mould is suitable for cable products with regular shape and high compactness and flatness requirements.

[0004] In the existing extrusion mould, the core and the sleeve are usually not fixedly connected, because the mould needs to have certain elasticity and adjustment ability to adapt to different production conditions and material properties during the extrusion process, and a certain gap is left between the core and the sleeve. During the extrusion process, air and other gases may be trapped in the mould cavity. The gap helps the gas to escape, avoids the generation of bubbles and defects, ensures the quality of the product, and most of them adopt the way that a plurality of groups of screws penetrate through the second sleeve, then the screws are connected with the first sleeve, so as to fix the two groups of sleeves, and the core is inserted into the sleeve. However, because the multi-group bolt fixing mode is adopted, the concentricity between the sleeve and the core becomes difficult to adjust, and the depth of each group of bolts entering the first sleeve is different, which will cause serious eccentricity, resulting in inconsistent wall thickness of the cable and affecting the production quality of the cable.

[0005] Therefore, in order to solve the above technical problems, the present application provides a cable production forming mould. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a cable production forming mould.

[0007] To achieve the above object, the utility model provides the following technical scheme: a cable production forming mould comprises a first sleeve, a second sleeve and a clamping piece.

[0008] The telescopic mechanism is arranged on one side of the second sleeve, and is used for controlling the elongation or shortening of the clamping piece.

[0009] The fixing mechanism is arranged on one side of the first mold cover and is used for connecting the second mold cover in the first mold cover.

[0010] The telescopic mechanism comprises a rotating shaft, one end of the rotating shaft is connected with the rotating disc through the connecting piece, the outer surface of the rotating shaft is rotationally connected with the inner wall of the first circular ring, the outer surface of the first circular ring is connected with a plurality of sliding tracks, one end of the sliding track is connected with the inner wall of the second circular ring, the inner wall of the sliding track is slidably connected with the moving rod, one end of the moving rod penetrates through the second circular ring and is connected with the clamping piece, the outer surface of the moving rod is connected with the vertical rod, one end of the vertical rod is connected with the limiting plate, a plurality of sliding grooves are formed in the rotating disc penetrating through the top, the vertical rod is slidably connected in the sliding groove, and the first circular ring is connected with the supporting plate.

[0011] Preferably, the fixing mechanism comprises a bolt, a plurality of threaded holes are formed in one side of the first mold cover, the clamping pieces are all penetrated through the threaded holes formed in the two sides, and the bolt is threadedly inserted into the threaded hole after the clamping piece enters the clamping groove.

[0012] Preferably, a plurality of clamping grooves are arranged in the inner wall of the first mold cover, and the gap between the mold core and the mold cover can be adjusted according to different plastic materials.

[0013] Preferably, a mold core is arranged in the first mold cover, a groove is formed in one side of the second mold cover, one side of the second mold cover is connected with the supporting plate, and the other side of the second circular ring is connected with the mounting piece.

[0014] Preferably, the first mold cover, the second mold cover, the mold core, the rotating disc, the supporting plate and the rotating shaft are all penetrated through and provided with through holes, and the through holes are used for the cable to pass through.

[0015] Preferably, a plurality of adjusting plates are connected with the outer surface of the rotating shaft, the adjusting plates facilitate the rotation of the rotating shaft and drive the rotating disc to rotate.

[0016] Preferably, a gap is left between the first mold cover and the second mold cover, air and other gases may be trapped in the mold cavity during the extrusion process, the gap helps the gases to escape, avoids the generation of bubbles and defects, and ensures the quality of the product.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. By setting up a telescopic mechanism and a fixing mechanism, the rotating shaft can drive the turntable to rotate, causing the vertical rod in the sliding groove to slide. Under the limit of the sliding track, the vertical rod can only slide in the direction of the sliding track. The clamp is inserted into the clamp slot, and then the bolt is passed through the threaded hole to connect the first mold sleeve and the second mold sleeve. Under the limit of the clamp slot, the concentricity between the mold sleeve and the mold core is ensured, thereby solving the problem that the concentricity between the mold sleeve and the mold core is difficult to adjust. The different depths of each set of bolts entering the first mold sleeve will cause serious eccentricity, resulting in inconsistent cable wall thickness and affecting the production quality of the cable.

[0019] 2. By setting multiple sets of slots, the gap between the mold core and the mold sleeve can be adjusted according to the different shrinkage rates of different materials. If the shrinkage rate of the material is high, a larger gap is needed to avoid the product size being too small after cooling; conversely, if the shrinkage rate of the material is low, a smaller gap is needed. The card is inserted into different slots, thereby adjusting the size of the gap between the mold core and the mold sleeve. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the mold core in this utility model;

[0023] Figure 3 This is a schematic diagram of the sliding groove in this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the turntable of this utility model;

[0025] Figure 5 This is a schematic diagram of the sliding track in this utility model;

[0026] 1. First mold sleeve; 2. Second mold sleeve; 3. Rotating shaft; 4. Adjusting plate; 5. Bolt; 6. Mold core; 7. Slot; 8. Turntable; 9. Threaded hole; 10. Clamp; 11. Sliding groove; 12. Limiting plate; 13. Support plate; 14. Moving rod; 15. Vertical rod; 16. Sliding rail; 17. Second ring; 18. First ring; 19. Groove; 20. Mounting part; 21. Through hole. Detailed Implementation

[0027] like Figures 1-5 As shown, this utility model provides a forming mold for cable production, including a first mold sleeve 1, a second mold sleeve 2, and a clamping piece 10;

[0028] A telescopic mechanism is provided on one side of the second mold sleeve 2 to control the extension or retraction of the clamp 10;

[0029] A fixing mechanism is provided on one side of the first mold sleeve 1 for connecting the second mold sleeve 2 inside the first mold sleeve 1;

[0030] The telescopic mechanism includes a rotating shaft 3, one end of which passes through a connector and connects to a turntable 8. The outer surface of the rotating shaft 3 is rotatably connected to the inner wall of a first ring 18. The outer surface of the first ring 18 is connected to multiple sets of sliding rails 16. One end of the sliding rails 16 is connected to the inner wall of a second ring 17. A moving rod 14 is slidably connected to the inner wall of the sliding rails 16. One end of the moving rod 14 passes through a connecting clip 10 of the second ring 17. The outer surface of the moving rod 14 is connected to a vertical rod 15. One end of the vertical rod 15 is connected to a limiting plate 12. The turntable 8 has multiple sets of sliding grooves 11 through its top. The vertical rod 15 is slidably connected in the sliding grooves 11. The top of the first ring 18 is connected to a support plate 13.

[0031] The fixing mechanism includes bolts 5, and multiple sets of threaded holes 9 are opened on one side of the first mold sleeve 1. Multiple sets of clamps 10 are threaded holes 9 through both sides. The outer surface of the bolts 5 is threaded into the threaded holes 9.

[0032] The first mold sleeve 1 is provided with a mold core 6, the second mold sleeve 2 has a groove 19 on one side, the second mold sleeve 2 is connected to a support plate 13 on one side, and the second ring 17 is connected to an installation part 20 on the other side.

[0033] Multiple sets of adjusting plates 4 are connected to the outer surface of the rotating shaft 3;

[0034] A gap is left between the first mold sleeve 1 and the second mold sleeve 2;

[0035] The first mold sleeve 1, the second mold sleeve 2, the mold core 6, the turntable 8, the support plate 13 and the rotating shaft 3 are all provided with through holes 21;

[0036] By manually rotating the adjusting plate 4, the rotating shaft 3 is driven to rotate, which in turn drives the turntable 8 to rotate, causing the vertical rod 15, which is slidably connected in the sliding groove 11, to move. This causes the moving rod 14 to move. Because the moving rod 14 is limited by the sliding track 16, it can only move in the direction of the sliding track 16. The moving rod 14 drives the clamp 10 to move and inserts it into the slot 7. Then, the bolt 5 passes through the threaded hole 9 to connect the first mold sleeve 1 and the second mold sleeve 2. Under the limitation of the slot 7, the concentricity between the mold sleeve and the mold core 6 is ensured, thus solving the problem that the concentricity between the mold sleeve and the mold core 6 is difficult to adjust. The different depths to which each set of bolts 5 enters the first mold sleeve 1 will cause serious eccentricity, resulting in inconsistent cable wall thickness and affecting the production quality of the cable. The through hole 21 is used for the cable to pass through. During the extrusion process, air and other gases may be trapped in the mold cavity. The gap helps the gas to escape, avoiding the generation of bubbles and defects, and ensuring the quality of the product.

[0037] like Figure 2 As shown, the inner wall of the first mold sleeve 1 is provided with multiple sets of slots 7;

[0038] Based on the different shrinkage rates of different materials, if the material has a high shrinkage rate, a larger gap is needed to prevent the product size from being too small after cooling; conversely, if the material has a low shrinkage rate, a smaller gap is needed. The clip 10 is inserted into different clip slots 7, thereby adjusting the size of the gap between the mold core 6 and the mold sleeve.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A forming die for cable production, characterized in that: it comprises a first die sleeve (1), a second die sleeve (2) and a clamping piece (10); a telescopic mechanism is arranged on one side of the second die sleeve (2) and used to control the extension or shortening of the clamping piece (10); a fixing mechanism is arranged on one side of the first die sleeve (1) and used to connect the second die sleeve (2) in the first die sleeve (1); the telescopic mechanism comprises a rotating shaft (3), one end of the rotating shaft (3) is connected with a rotating disc (8) through a connecting piece, the outer surface of the rotating shaft (3) is rotationally connected with the inner wall of a first circular ring (18), the outer surface of the first circular ring (18) is connected with a plurality of sliding tracks (16), one end of the sliding track (16) is connected with the inner wall of a second circular ring (17), the inner wall of the sliding track (16) is slidably connected with a moving rod (14), one end of the moving rod (14) penetrates through the second circular ring (17) and is connected with the clamping piece (10), the outer surface of the moving rod (14) is connected with a vertical rod (15), one end of the vertical rod (15) is connected with a limiting plate (12), the rotating disc (8) penetrates through the top and is provided with a plurality of sliding grooves (11), the vertical rod (15) is slidably connected in the sliding groove (11), and the top of the first circular ring (18) is connected with a supporting plate (13). The fixing mechanism comprises a bolt (5), a plurality of threaded holes (9) are formed in one side of the first die sleeve (1), a plurality of clamping pieces (10) all penetrate through the threaded holes (9) formed on both sides, and the outer surface of the bolt (5) is threadedly inserted into the threaded hole (9). A plurality of clamping grooves (7) are arranged on the inner wall of the first die sleeve (1). A die core (6) is arranged in the first die sleeve (1), a recess (19) is formed in one side of the second die sleeve (2), one side of the second die sleeve (2) is connected with a supporting plate (13), and the other side of the second circular ring (17) is connected with a mounting piece (20). The first die sleeve (1), the second die sleeve (2), the die core (6), the rotating disc (8), the supporting plate (13) and the rotating shaft (3) all penetrate through and are provided with through holes (21).

2. The molding die for cable production according to claim 1, characterized in that: A plurality of adjusting plates (4) are connected with the outer surface of the rotating shaft (3).

3. The forming die for cable production according to claim 2, characterized in that: There is a gap between the first die sleeve (1) and the second die sleeve (2).

4. The forming die for cable production according to claim 3, characterized in that: ​ 5. The forming die for cable production according to claim 4, characterized in that: ​ 6. The forming die for cable production according to claim 5, characterized in that: ​ 7. The forming die for cable production according to claim 6, characterized in that: ​

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