Continuous lead extruding machine

Abstract

The utility model discloses a continuous lead extruding machine, which relates to the technical field of lead extruding machines and comprises a die holder body, a water cooling device is fixed on the die holder body through a sleeve, and the water cooling device comprises a front thread sleeve, a guide block, a pressing outer thread sleeve, a pressing inner thread sleeve, an elastic clamping mechanism, an outer cooling cylinder and an inner cooling cylinder. The outer cooling cylinder is fixed in the front threaded sleeve through the guide block, the pressing outer threaded sleeve and the pressing inner threaded sleeve, the inner cooling cylinder is arranged in the outer cooling cylinder in a sleeved mode, and the elastic clamping and fixing mechanism is arranged between the outer cooling cylinder and the inner cooling cylinder; the inner cooling cylinder has a clamping state and an unclamping state, the inner cooling cylinder is limited by the elastic clamping mechanism and cannot move in the clamping state, and the inner cooling cylinder can move in the axial direction in the unclamping state. According to the lead extruding machine, the cooling cylinders which are different in inner diameter and can be rapidly switched are adopted, cables of different specifications and thicknesses can be rapidly and conveniently cooled and solidified according to needs in actual use, and the problems that an existing lead extruding machine is low in utilization rate, the water cooling structure replacement process is complex, and the production efficiency is affected are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a continuous lead extruding machine. BACKGROUND

[0002] The continuous lead extruding machine is one of the devices for producing electric wire and cable, and is used for covering lead sheath on the cable. Figure 11 As shown in the figure, the continuous lead extruding machine usually comprises a die seat body 1, and the die seat body 1 is usually provided with an extruding device 2 comprising a front screw sleeve, a pressure equalizing ring, a flow guide die core, a die cover, a die adjusting cover ring, an adjusting screw rod and the like, and in addition, the die seat body 1 is further fixed with a water cooling structure 32.

[0003] As known from Figure 11 , the existing water cooling structure 32 usually fixes a cooling sleeve 33 with a sandwiched water cavity on the die seat body, and sets a water spraying hole 34 communicating with the sandwiched water cavity at the end of the cooling sleeve 33, so that when the cable covered with lead sheath is output from the extruding device, water is sprayed to the cable through the water spraying hole 34, so that the lead sheath can be quickly cooled and solidified. But the applicant found through careful analysis that the existing continuous lead extruding machine can cover lead sheath of different thicknesses on cables of different specifications by adjusting the positions and distances of the components in the extruding device. However, since the water cooling structure can only cool the cable with a constant specification and a constant lead sheath thickness, when cables with different specifications and different lead sheath thicknesses need to be produced, the continuous lead extruding machine needs to be replaced or the water cooling structure needs to be replaced as a whole, resulting in the technical problems of low utilization rate of the continuous lead extruding machine, complex replacement process and influence on the production efficiency of the cable. SUMMARY

[0004] The utility model aims at overcoming the above technical problems existing in the prior art, and provides a continuous lead extruding machine, which adopts a cooling cylinder with different inner diameters and can be quickly switched, so that cables with different specifications and lead sheath thicknesses can be quickly and conveniently cooled and solidified according to the needs in actual use, and the technical problems of low utilization rate of the existing lead extruding machine, complex replacement process of the water cooling structure and influence on the production efficiency are solved.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A continuous lead extruding machine comprises a die seat body, an extruding device fixed in the die seat body, a sleeve fixed at the end of the die seat body, and a water cooling device fixed on the sleeve through the sleeve. The water cooling device comprises a front threaded sleeve, a guide block, a compression outer threaded sleeve, a compression inner threaded sleeve, an elastic clamping mechanism, an outer cooling cylinder and an inner cooling cylinder. The front end of the front threaded sleeve is fixed in the sleeve by threads. The guide block is fixed in the front threaded sleeve through the compression outer threaded sleeve and the compression inner threaded sleeve. The outer cooling cylinder is fixed in the front threaded sleeve through the guide block. The inner cooling cylinder is sleeved on the outer cooling cylinder. The outer cooling cylinder and the inner cooling cylinder are both provided with a sandwich water cavity. The front end of the outer cooling cylinder is fixed with an outer nozzle communicating with the sandwich water cavity. The front end of the inner cooling cylinder is fixed with an inner nozzle communicating with the sandwich water cavity. The elastic clamping mechanism is arranged between the outer cooling cylinder and the inner cooling cylinder. The inner cooling cylinder has a clamping state and a release state which can be switched by rotation. In the clamping state, the inner cooling cylinder is limited from moving by the elastic clamping mechanism. In the release state, the inner cooling cylinder can move axially.

[0007] The elastic clamping mechanism comprises a small hand wheel, a clamping ring, an elastic assembly and a locking block. The locking block is fixed on the outer surface of the rear part of the inner cooling cylinder. The small hand wheel is fixed on the rear end of the outer cooling cylinder. The clamping ring is connected to the rear side of the small hand wheel through a plurality of elastic assemblies. The inner diameter of the small hand wheel is larger than the inner diameter of the outer cooling cylinder. The inner diameter of the clamping ring is between the outer diameter of the inner cooling cylinder and the inner diameter of the small hand wheel. There is a clamping gap between the clamping ring and the small hand wheel. The clamping ring is provided with a gap notch for the locking block to pass through. The locking block can move to the front side of the clamping ring through the gap notch. In the clamping state, the locking block is misaligned with the gap notch. The locking block is located in the clamping gap and is blocked by the clamping ring. The inner cooling cylinder cannot move. In the release state, the locking block is located in the gap notch. The locking block is out of the clamping gap. The inner cooling cylinder can move axially.

[0008] The elastic assembly comprises a positioning screw, a spacer nut, a gasket and a spring. The gasket and the spacer nut are respectively located on both sides of the clamping ring. The positioning screw is fixed on the small hand wheel after passing through the gasket, the clamping ring and the spacer nut in sequence. The spring is sleeved on the positioning screw and located between the gasket and the clamping ring. The clamping ring can be compressed elastically under stress and increase the clamping gap.

[0009] The rear end of the outer cooling cylinder is internally provided with a diameter expansion section communicating with the clamping gap. The locking block comprises a locking part and a positioning part which are adapted to the clamping gap and the diameter expansion section respectively. The locking part is integrally formed at the rear end of the positioning part and protrudes from the outer surface of the positioning part. The elastic clamping mechanism fixes the inner cooling cylinder through the clamping ring and the locking part.

[0010] The locking part is provided with an extrusion inclined surface for extruding into the clamping gap and a clamping plane for cooperating with the clamping ring.

[0011] The outer surface of the rear part of the inner cooling cylinder is fixed with a positioning block. The clamping ring is provided with a positioning notch adapted to the positioning block. The positioning block enters the diameter expansion section through the positioning notch.

[0012] The number of the locking blocks and the positioning blocks is two, the two locking blocks and the two positioning blocks are symmetrically arranged, and the adjacent locking block and the positioning block are distributed at 90 degrees.

[0013] The outer nozzle of the outer cooling cylinder is blocked by the inner cooling cylinder after the inner cooling cylinder is fixed in the outer cooling cylinder.

[0014] The front screw sleeve is internally provided with a step, the compression outer screw sleeve is screwed at the rear end of the front screw sleeve, the compression inner screw sleeve is screwed in the compression outer screw sleeve, and the guide block is fixed at the step by the compression outer screw sleeve and the compression inner screw sleeve.

[0015] The rear end of the outer cooling cylinder is provided with a large hand wheel, the middle part of the outer cooling cylinder is threadedly connected with the guide block, and the axial position of the outer cooling cylinder in the front screw sleeve is adjustable.

[0016] The utility model discloses the advantages in the use lie in:

[0017] 1, the key improvement point of the utility model lies in setting the elastic clamping mechanism between the inner cooling cylinder and the outer cooling cylinder of different inner diameters, so that the elastic clamping mechanism can be used to quickly realize the dismounting and mounting of the inner cooling cylinder, and in actual use, the inner cooling cylinder or the outer cooling cylinder can be conveniently and quickly switched to work, thereby being favorable for cooling and solidifying the cable of different specifications and lead sheath thickness, not only improves the utilization and production efficiency of the continuous lead extruding machine, but also makes the replacement process of the cooling cylinder more simple and convenient, and the practicality is higher, and the innovation is higher.

[0018] 2, the elastic clamping mechanism has the advantages of simple structure, good clamping effect for the inner cooling cylinder and convenient quick dismounting of the inner cooling cylinder.

[0019] 3, the positioning part on the locking block can increase the contact area between the locking block and the inner cooling cylinder, which is favorable for improving the stability and reliability of the locking block on the inner cooling cylinder, and is also favorable for improving the stability and reliability of the inner cooling cylinder fixed in the outer cooling cylinder.

[0020] 4, the clamping plane and the extruding inclined surface are matched, so that the locking block can be rotated into the clamping gap for locking by using smaller force.

[0021] 5, the positioning gap and the positioning block are matched, which is favorable for accurately guiding the inner cooling cylinder into the outer cooling cylinder, and the positioning block can be used to position the inner cooling cylinder, so that the inner cooling cylinder can keep the axial line coincident with the outer cooling cylinder, and the uniformity of the cable cooling can be improved.

[0022] 6, the two symmetric locking blocks and the two symmetric positioning blocks are matched, which can further improve the stability and reliability of the fixed inner cooling cylinder.

[0023] 7. The utility model discloses a big hand wheel is fixed on the outer cooling cylinder, make the dismounting of outer cooling cylinder more simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the plane structure schematic drawing of the utility model;

[0025] Figure 2 It is Figure 1 The enlarged structure schematic drawing of M place in;

[0026] Figure 3 It is Figure 1 The transverse section structure schematic drawing of;

[0027] Figure 4 It is Figure 1 The three-dimensional structure schematic drawing of;

[0028] Figure 5 It is the assembly structure schematic drawing of water cooling device;

[0029] Figure 6 It is the transverse section structure schematic drawing of outer cooling cylinder and inner cooling cylinder fixed into one;

[0030] Figure 7 It is the transverse section structure schematic drawing of outer cooling cylinder;

[0031] Figure 8 It is the transverse section structure schematic drawing of inner cooling cylinder;

[0032] Figure 9 It is Figure 8 The A-A section structure schematic drawing of;

[0033] Figure 10 It is the three-dimensional structure schematic drawing of inner cooling cylinder;

[0034] Figure 11 It is the transverse section structure schematic drawing of prior continuous extrusion lead machine.

[0035] 1, die seat body, 2, extrusion lead device, 3, sleeve, 4, front threaded sleeve, 5, guide block, 6, compression outer threaded sleeve, 7, compression inner threaded sleeve, 8, elastic clamping mechanism, 9, outer cooling cylinder, 10, inner cooling cylinder, 11, sandwich water cavity, 12, outer nozzle, 13, inner nozzle, 14, small hand wheel, 15, clamping ring, 16, elastic assembly, 17, locking block, 18, clamping gap, 19, give way gap, 20, water inlet pipe, 21, positioning screw, 22, spacer nut, 23, gasket, 24, spring, 25, locking part, 26, positioning part, 27, extrusion inclined surface, 28, clamping plane, 29, large hand wheel, 30, positioning gap, 31, positioning block, 32, water cooling structure, 33, cooling jacket, 34, water jet hole. DETAILED DESCRIPTION

[0036] As Figures 1-10 shown, the utility model provides a continuous extrusion lead machine, including die seat body 1, die seat body 1 is fixed with extrusion lead device 2 in, the rear end of die seat body 1 (the left end of the direction shown in the drawing) is fixed with sleeve 3, and die seat body 1 is fixed with water cooling device through sleeve 3, and water cooling device includes front threaded sleeve 4, guide block 5, compression outer threaded sleeve 6, compression inner threaded sleeve 7, elastic clamping mechanism 8, outer cooling cylinder 9 and inner cooling cylinder 10, and the front end of front threaded sleeve 4 is fixed in sleeve 3 with thread, and front threaded sleeve 4 is equipped with the step in, and compression outer threaded sleeve 6 is screwed in the rear end of front threaded sleeve 4, and compression inner threaded sleeve 7 is screwed in compression outer threaded sleeve 6, and guide block 5 is fixed in the step at front threaded sleeve 4 by compression outer threaded sleeve 6 and compression inner threaded sleeve 7.

[0037] Outer cooling cylinder 9 is fixed in front threaded sleeve 4 through guide block 5, and the middle part of outer cooling cylinder 9 is connected with guide block 5 with thread, and the rear end of outer cooling cylinder 9 is fixed with large hand wheel 29, and the rotation of outer cooling cylinder 9 is controlled through large hand wheel 29, can make the axial movement of outer cooling cylinder 9 in front threaded sleeve 4, to make the axial position of outer cooling cylinder 9 adjustable in front threaded sleeve 4.

[0038] The elastic clamping mechanism 8 is arranged between the outer cooling cylinder 9 and the inner cooling cylinder 10, and the inner cooling cylinder 10 is installed in the outer cooling cylinder 9 through the elastic clamping mechanism 8. Based on the elastic clamping mechanism 8, the inner cooling cylinder 10 has a clamping state and a release state which can be switched by rotating. In the clamping state, the inner cooling cylinder 10 is switched to the release state by rotating, and in the release state, the inner cooling cylinder 10 is switched to the clamping state by rotating. In the clamping state, the inner cooling cylinder 10 is limited by the elastic clamping mechanism 8 and cannot move, and in the release state, the inner cooling cylinder 10 can move axially.

[0039] It should be noted that when the inner cooling cylinder 10 is fixed in the outer cooling cylinder 9, the outer nozzle 12 of the outer cooling cylinder 9 is blocked by the inner cooling cylinder 10.

[0040] When a cable with a smaller specification and / or a thinner lead sheath needs to be produced, the inner cooling cylinder 10 and the inner nozzle 13 can be used to spray water to cool and solidify the cable. When a larger specification cable and / or a thicker lead sheath needs to be produced, the inner cooling cylinder 10 is first rotated to switch from the clamping state to the release state, at which time the inner cooling cylinder 10 can move axially in the outer cooling cylinder 9, and the inner cooling cylinder 10 can be withdrawn backward (left) to switch to the outer cooling cylinder 9. The entire switching process only needs to be performed by rotating the inner cooling cylinder 10, and the operation is more simple and convenient.

[0041] In a specific embodiment, as shown in Figures 1-6 , 8-10, the elastic clamping mechanism 8 includes a small hand wheel 14, a clamping ring 15, a plurality of elastic components 16, and a locking block 17. The locking block 17 is fixed to the outer surface of the rear part of the inner cooling cylinder 10, the small hand wheel 14 is fixed to the rear end face of the outer cooling cylinder 9, the number of elastic components 16 is multiple, in this embodiment, the number of elastic components 16 is 3 and is evenly arranged, the clamping ring 15 is connected to the rear side of the small hand wheel 14 through the plurality of elastic components 16, the inner diameter of the small hand wheel 14 is larger than the inner diameter of the outer cooling cylinder 9, the inner diameter of the clamping ring 15 is between the outer diameter of the inner cooling cylinder 10 and the inner diameter of the small hand wheel 14, there is a clamping gap 18 between the clamping ring 15 and the small hand wheel 14, the clamping ring 15 is provided with a gap notch 19 for the locking block 17 to pass through, and the locking block 17 can move to the front side of the clamping ring 15 through the gap notch 19. When the clamping ring 15 is subjected to a rear (left) force, the elastic components 16 can be compressed, thereby increasing the clamping gap 18 and facilitating the locking block 17 to enter the clamping gap 18.

[0042] When the inner cooling cylinder 10 is in the clamping state, the locking block 17 is misaligned with the clearance gap 19, the locking block 17 is located in the clamping gap 18 and is blocked by the clamping ring 15, the inner cooling cylinder 10 cannot move, at this time the inner cooling cylinder 10 can be used to cool the cable with smaller size and / or thinner lead sheath. When the inner cooling cylinder 10 is in the unclamping state, the locking block 17 is located in the clearance gap 19, the locking block 17 is out of the clamping gap 18, the inner cooling cylinder 10 can move axially, at this time the inner cooling cylinder 10 can be pulled out of the outer cooling cylinder 9, and then the outer cooling cylinder 9 can be switched to cool the cable with larger size and / or thicker lead sheath.

[0043] In the embodiment, as shown in Figures 1-5 , the elastic assembly 16 includes a positioning screw 21, a spacer nut 22, a gasket 23 and a spring 24, the clamping ring 15 is respectively provided with a positioning hole, the gasket 23 and the spacer nut 22 in each set of elastic assembly 16 are respectively located on both sides of the clamping ring 15, the positioning screw 21 in each set of elastic assembly 16 is fixed on the small hand wheel 14 after passing through the gasket 23, the positioning hole on the clamping ring 15 and the spacer nut 22 in turn, and the spring 24 is sleeved on the positioning screw 21 and located between the gasket 23 and the clamping ring 15. Under the action of the spring 24, the clamping ring 15 is always located on the side close to the spacer nut 22, when the clamping ring 15 is subjected to a backward force, the clamping ring 15 will compress the spring 24 and increase the clamping gap 18, so as to make the locking block 17 enter, so that the disassembly and assembly of the cooling cylinder are more simple and convenient.

[0044] It should be noted that, as shown in Figures 2-4 , the clamping ring 15 is also provided with a through hole, the water inlet pipe 20 on the outer cooling cylinder 9 can pass through the clamping ring 15 through the through hole, and the water inlet pipe 20 on the inner cooling cylinder 10 can be perpendicular to the inner cooling cylinder 10.

[0045] In a specific embodiment, as shown in Figure 7 , 10 , the rear end of the outer cooling cylinder 9 is internally provided with a diameter expansion section which is communicated with the clamping gap 18, and the inner diameter of the diameter expansion section is also smaller than the inner diameter of the small hand wheel 14. Correspondingly, the locking block 17 includes a locking part 25 which is matched with the clamping gap 18 and a positioning part 26 which is matched with the diameter expansion section, the locking block 17 is welded and fixed on the inner cooling cylinder 10 through the positioning part 26, the locking part 25 is integrally formed at the rear end of the positioning part 26 and protrudes from the outer surface of the positioning part 26, and the elastic clamping mechanism 8 enters the clamping gap 18 through the locking part 25 and is blocked by the clamping ring 15 to fix the inner cooling cylinder 10, so as to improve the stability and reliability of the inner cooling cylinder 10 fixed in the outer cooling cylinder 9.

[0046] In the embodiment, as shown in Figure 10As shown, the locking portion 25 is provided with an extrusion inclined surface 27 for extruding into the clamping gap 18 and a clamping flat surface 28 for cooperating with the clamping ring 15, when the inner cooling cylinder 10 is controlled to rotate, the extrusion inclined surface 27 enters the clamping gap 18 earlier than the clamping flat surface 28, so that the state switching of the inner cooling cylinder 10 is more smooth and time-saving and labor-saving.

[0047] In a specific embodiment, as shown in Figure 5 As shown, the outer surface of the rear portion of the inner cooling cylinder 10 is fixed with a positioning block 31, and the clamping ring 15 is provided with a positioning notch 30 matched with the positioning block 31, and when installed, the positioning block 31 can enter the enlarged diameter section through the positioning notch 30.

[0048] Further, as shown in Figures 5-6 , 8-10, the number of locking blocks 17 and positioning blocks 31 is two, and the two locking blocks 17 and the two positioning blocks 31 are symmetrically arranged, and the adjacent locking block 17 and the positioning block 31 are distributed at 90 degrees. In this way, the axis of the inner cooling cylinder 10 and the outer cooling cylinder 9 can be kept coincident, thereby further improving the stability and reliability of the fixed inner cooling cylinder 10 and the cooling effect on the cable.

[0049] The working principle of the utility model is:

[0050] In the initial state, the inner cooling cylinder 10 is in the clamped state, the locking block 17 is misaligned with the giving gap 19, the locking block 17 is located in the clamping gap 18 and is blocked by the clamping ring 15, and the inner cooling cylinder 10 cannot move in the outer cooling cylinder 9, at this time, it is suitable for producing smaller specification and / or thinner lead sheath cable. When producing, no water is put into the outer cooling cylinder 9, only the inner cooling cylinder 10 is put into water, so that the inner cooling cylinder 10 and the inner nozzle 13 cooperate to spray water to the cable for cooling and solidification.

[0051] When a larger specification and / or thicker lead sheath cable needs to be produced, the inner cooling cylinder 10 is first controlled to rotate, so that the inner cooling cylinder 10 is switched from the clamped state to the unclamped state, at this time, the locking block 17 is located in the giving gap 19, the locking block 17 is separated from the clamping gap 18, and the inner cooling cylinder 10 can move axially, and the inner cooling cylinder 10 can be pulled out of the outer cooling cylinder 9 by force, and then the outer cooling cylinder 9 is switched to cool the larger specification and / or thicker lead sheath cable.

[0052] In summary, the utility model can quickly realize the disassembly and installation of the inner cooling cylinder 10 by using the elastic clamping mechanism 8, and can conveniently and quickly switch to use the inner cooling cylinder 10 or the outer cooling cylinder 9 in actual use, which is beneficial to cooling and solidification of cables of different specifications and lead sheath thicknesses, improves the utilization rate and production efficiency of the continuous lead extruding machine, and makes the replacement process of the cooling cylinder more simple and convenient, more practical and more innovative.

[0053] The above merely describes a specific implementation of the present application, and any feature disclosed in the specification can be replaced by other equivalent or similar purpose replacement features unless specifically described; all features disclosed, or steps in all methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

Claims

1. A continuous extrusion machine, comprising a die seat body (1), an extrusion device (2) fixed in the die seat body (1), a sleeve (3) fixed at the end of the die seat body (1), and a water cooling device fixed to the die seat body (1) through the sleeve (3), characterized in that: The water cooling device comprises a front threaded sleeve (4), a guide block (5), a compression outer threaded sleeve (6), a compression inner threaded sleeve (7), an elastic clamping mechanism (8), an outer cooling cylinder (9) and an inner cooling cylinder (10), the front end of the front threaded sleeve (4) is fixedly screwed in the sleeve (3), the guide block (5) is fixed in the front threaded sleeve (4) through the compression outer threaded sleeve (6) and the compression inner threaded sleeve (7), the outer cooling cylinder (9) is fixed in the front threaded sleeve (4) through the guide block (5), the inner cooling cylinder (10) is sleeved in the outer cooling cylinder (9), the outer cooling cylinder (9) and the inner cooling cylinder (10) are both provided with a sandwich water cavity (11), the front end of the outer cooling cylinder (9) is fixedly provided with an outer nozzle (12) in communication with the sandwich water cavity (11), the front end of the inner cooling cylinder (10) is fixedly provided with an inner nozzle (13) in communication with the sandwich water cavity (11), and the elastic clamping mechanism (8) is arranged between the outer cooling cylinder (9) and the inner cooling cylinder (10); the inner cooling cylinder (10) has a clamping state and a release state which can be switched by rotation, in the clamping state, the inner cooling cylinder (10) is limited from moving by the elastic clamping mechanism (8), and in the release state, the inner cooling cylinder (10) can move axially.

2. A continuous extrusion machine according to claim 1, characterized in that: The elastic clamping mechanism (8) comprises a small hand wheel (14), a clamping ring (15), an elastic assembly (16) and a locking block (17), the locking block (17) is fixed to the outer surface of the rear part of the inner cooling cylinder (10), the small hand wheel (14) is fixed to the rear end of the outer cooling cylinder (9), the clamping ring (15) is connected to the rear side of the small hand wheel (14) through a plurality of elastic assemblies (16), the inner diameter of the small hand wheel (14) is larger than the inner diameter of the outer cooling cylinder (9), the inner diameter of the clamping ring (15) is between the outer diameter of the inner cooling cylinder (10) and the inner diameter of the small hand wheel (14), there is a clamping gap (18) between the clamping ring (15) and the small hand wheel (14), the clamping ring (15) is provided with a gap notch (19) for the locking block (17) to pass through, and the locking block (17) can move to the front side of the clamping ring (15) through the gap notch (19); in the clamping state, the locking block (17) is dislocated from the gap notch (19), the locking block (17) is located in the clamping gap (18) and is blocked by the clamping ring (15), and the inner cooling cylinder (10) cannot move; in the release state, the locking block (17) is located in the gap notch (19), the locking block (17) is separated from the clamping gap (18), and the inner cooling cylinder (10) can move axially.

3. A continuous extrusion machine according to claim 2, wherein: The elastic assembly (16) comprises a positioning screw (21), a spacer nut (22), a gasket (23) and a spring (24), the gasket (23) and the spacer nut (22) are respectively located on the two sides of the clamping ring (15), the positioning screw (21) is fixed to the small hand wheel (14) after sequentially penetrating through the gasket (23), the clamping ring (15) and the spacer nut (22), the spring (24) is sleeved on the positioning screw (21) and located between the gasket (23) and the clamping ring (15), the clamping ring (15) can be compressed elastically under stress and increase the clamping gap (18).

4. A continuous extrusion machine as claimed in claim 2, wherein: The rear end of the outer cooling cylinder (9) is internally provided with a diameter expansion section communicating with the clamping gap (18), the locking block (17) comprises a locking portion (25) and a positioning portion (26) respectively matched with the clamping gap (18) and the diameter expansion section, the locking portion (25) is integrally formed at the rear end of the positioning portion (26) and protrudes from the outer surface of the positioning portion (26), and the elastic clamping mechanism (8) is fixed with the inner cooling cylinder (10) through the clamping ring (15) and the locking portion (25).

5. A continuous extrusion machine according to claim 4, wherein: The locking portion (25) is provided with an extrusion inclined surface (27) for extruding into the clamping gap (18) and a clamping plane (28) for cooperating with the clamping ring (15).

6. A continuous extrusion machine as claimed in claim 2, wherein: The outer surface of the rear portion of the inner cooling cylinder (10) is fixed with a positioning block (31), the clamping ring (15) is provided with a positioning notch (30) matched with the positioning block (31), and the positioning block (31) enters the diameter expansion section through the positioning notch (30).

7. A continuous extrusion machine according to claim 6, wherein: The number of the locking block (17) and the positioning block (31) is two, the two locking blocks (17) and the two positioning blocks (31) are symmetrically arranged, and the adjacent locking block (17) and the positioning block (31) are distributed at an angle of 90 degrees.

8. A continuous extrusion machine as claimed in claim 1, wherein: After the inner cooling cylinder (10) is fixed in the outer cooling cylinder (9), the outer nozzle (12) of the outer cooling cylinder (9) is blocked by the inner cooling cylinder (10).

9. A continuous extrusion machine as claimed in claim 1, wherein: The front screw sleeve (4) is internally provided with a step, the compression outer screw sleeve (6) is screwed at the rear end of the front screw sleeve (4), the compression inner screw sleeve (7) is screwed in the compression outer screw sleeve (6), and the guide block (5) is fixed at the step by the compression outer screw sleeve (6) and the compression inner screw sleeve (7).

10. A continuous extrusion machine as claimed in claim 1, wherein: The rear end of the outer cooling cylinder (9) is provided with a large hand wheel (29), the middle portion of the outer cooling cylinder (9) is threadedly connected with the guide block (5), and the axial position of the outer cooling cylinder (9) in the front screw sleeve (4) is adjustable.

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