An insulating layer extruder for cable manufacturing

Abstract

An insulating layer extruder for cable manufacturing belongs to the field of cable manufacturing equipment. The extruder body is fixedly installed at the upper end of the bracket. The extruder body includes a housing. A rotating shaft is provided at the center of the housing. One end of the rotating shaft passes through the housing and is fixedly connected to the output shaft of the transmission. A transmission gear is fixedly connected to the input shaft of the transmission. The transmission gear meshes with the gear on the output shaft of the motor fixedly connected to the bracket. The spiral direction of the spiral plate II is opposite to that of the spiral plate I and the spiral plate III, and a movable device is fixedly connected to the opposite surface of the spiral plate II and the spiral plate I. The present invention can not only push the raw materials that have not reached the molten state towards the direction of the spiral plate I through the rotation of the spiral plate II until they reach the molten state and then flow to the position of the spiral plate III through the perforation, avoiding small particles from blocking the perforation and affecting the flow rate. Moreover, the present invention can also stir the raw materials through the slide rod to ensure uniform heating.

Description

Technical Field

[0001] The present invention relates to an insulating layer extruder for cable manufacturing, belonging to the field of cable manufacturing equipment. Background Art

[0002] When manufacturing the insulating layer of a cable, there may be small unplasticized particles in the insulating layer due to uneven heating of the insulating layer, which in turn affects the quality of the insulating layer. Although common extruders are provided with a screen at the extrusion outlet to filter small particles, the raw materials that have not reached the molten state easily block the screen, affect the output per unit time of the extruder, and further affect subsequent forming operations. Moreover, if not cleaned for a long time, it will cause the equipment to be unusable. Summary of the Invention

[0003] The purpose of the present invention is to provide an insulating layer extruder for cable manufacturing to solve the above problems in the background art.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An insulating layer extruder for cable manufacturing includes a transmission gear, a transmission, an extruder body, and a movable device; the extruder body is fixedly installed at the upper end of a bracket, and the extruder body includes a housing; a rotating shaft is provided at the center of the housing, one end of the rotating shaft passes through the housing and is fixedly connected to the output shaft of the transmission, a transmission gear is fixedly connected to the input shaft of the transmission, and the transmission gear meshes with a gear on the output shaft of a motor fixedly connected to the bracket; an extrusion outlet is provided at one end of the housing away from the transmission; one end of the rotating shaft close to the extrusion outlet is connected to the inner wall of the housing through a fixing member; a feeding funnel communicating with the inside of the housing is fixedly connected to the upper end of the housing; a spiral plate I, a spiral plate II, and a spiral plate III are fixedly connected to the rotating shaft in sequence from the end where the feeding funnel is located to the end where the extrusion outlet is located; the spiral direction of the spiral plate II is opposite to that of the spiral plate I and the spiral plate III, and a plurality of movable devices are fixedly connected to the opposite surfaces of the spiral plate II and the spiral plate I.

[0006] A plurality of through holes are provided on the spiral plate II;

[0007] The movable device includes a connecting rod; both ends of the connecting rod are respectively fixedly connected to the opposite surfaces of the spiral plate I and the spiral plate II, and a sliding rod slidably matched with the connecting rod is provided on the connecting rod; the sliding rod is slidably matched with an arc-shaped groove I and an arc-shaped groove II;

[0008] A plurality of insertion rods slidably matched with the through holes at corresponding positions on the spiral plate II are fixedly connected to the side surface of the sliding rod.

[0009] Preferably, the aperture of the through holes on the spiral plate II gradually decreases in the direction from near the spiral plate I to far from the spiral plate I.

[0010] Preferably, a gap is left between the second spiral plate and the first spiral plate, and the movable device is located in this gap.

[0011] Preferably, arc-shaped groove I and two arc-shaped grooves II are provided on the inner wall of the outer shell of the gap between the second spiral plate and the first spiral plate; the two ends of the two arc-shaped grooves II communicate with each other, and the two ends of each arc-shaped groove II communicate with the two ends of the arc-shaped groove I respectively; a groove is provided on the inner wall of the outer shell between the two arc-shaped grooves II, and a round rod connected to the inner wall of the outer shell through a bearing is provided between the two arc-shaped grooves II; three transmission rods are fixedly connected to the outer circular surface of the round rod, one of the transmission rods is located in the arc-shaped groove I, and one of the remaining two transmission rods is located in the groove and the other is located in one of the arc-shaped grooves II.

[0012] Preferably, the included angle between the arc-shaped groove I and each arc-shaped groove II is equal.

[0013] Preferably, the connecting rod is parallel to the rotating shaft.

[0014] Preferably, the number of the movable devices is odd, and the number of the movable devices is greater than or equal to 3.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention can not only push the raw materials that have not reached the molten state in the direction of the first spiral plate by the rotation of the second spiral plate until they reach the molten state and then flow to the position of the third spiral plate through the through holes, avoiding small particles from blocking the through holes and affecting the flow rate, but also the present invention can stir the raw materials through the sliding rod to ensure uniform heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of an insulating layer extruder for cable manufacturing according to the present invention;

[0017] Figure 2 is a cross-sectional view of the extruder body of an insulating layer extruder for cable manufacturing according to the present invention;

[0018] Figure 3 is a cross-sectional view of the outer shell of an insulating layer extruder for cable manufacturing according to the present invention;

[0019] Figure 4 is Figure 3 the cross-sectional view in the A-A direction in

[0020] Figure 5 is Figure 3 the cross-sectional view in the B-B direction in

[0021] Figure 6 is a schematic connection structure diagram of the arc-shaped groove I, arc-shaped groove II, groove, round rod and transmission rod of an insulating layer extruder for cable manufacturing according to the present inventionFigure 1 ;

[0022] Figure 7 is a schematic connection structure of the arc groove I, arc groove II, groove, round rod and transmission rod of an insulating layer extruder for cable manufacturing according to the present invention Figure 2 ;

[0023] Figure 8 is Figure 7 an enlarged structural schematic diagram of E in

[0024] Figure 9 is a structural schematic diagram of a movable device of an insulating layer extruder for cable manufacturing according to the present invention

[0025] Figure 10 is a side view of a movable device of an insulating layer extruder for cable manufacturing according to the present invention

[0026] Figure 11 is a schematic diagram of the state where the sliding rod of an insulating layer extruder for cable manufacturing according to the present invention moves into one of the arc grooves II

[0027] Figure 12 is a schematic diagram of the state where the sliding rod of an insulating layer extruder for cable manufacturing according to the present invention moves into another arc groove II

[0028] Figure 13 is a schematic diagram of the sliding state of the sliding rod of an insulating layer extruder for cable manufacturing according to the present invention in the arc groove I

[0029] In the figure: 1, bracket; 2, transmission gear; 3, transmission; 4, extruder body; 41, housing; 42, feed hopper; 43, rotating shaft; 44, spiral plate I; 45, arc groove I; 46, arc groove II; 47, groove; 48, round rod; 49, transmission rod; 410, spiral plate II; 411, spiral plate III; 412, fixing member; 413, extrusion outlet; 5, movable device; 51, connecting rod; 52, sliding rod; 53, inserting rod Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0031] Detailed implementation manner one: As Figures 1-13As shown in the figure, this embodiment describes an insulating layer extruder for cable manufacturing, which includes a transmission gear 2, a transmission 3, an extruder body 4, and a movable device 5; the extruder body 4 is fixedly installed at the upper end of the bracket 1, and the extruder body 4 includes a housing 41; a rotating shaft 43 is provided at the center of the housing 41, one end of the rotating shaft 43 passes through the housing 41 and is fixedly connected to the output shaft of the transmission 3, a transmission gear 2 is fixedly connected to the input shaft of the transmission 3, and the transmission gear 2 meshes with a gear on the output shaft of the motor fixedly connected to the bracket 1; an extrusion port 413 is provided at one end of the housing 41 away from the transmission 3; one end of the rotating shaft 43 close to the extrusion port 413 is connected to the inner wall of the housing 41 through a fixing member 412; a feeding funnel 42 communicating with the inside of the housing 41 is fixedly connected to the upper end of the housing 41; a spiral plate I 44, a spiral plate II 410, and a spiral plate III 411 are fixedly connected to the rotating shaft 43 in sequence from the end where the feeding funnel 42 is located to the end where the extrusion port 413 is located; the spiral direction of the spiral plate II 410 is opposite to that of the spiral plate I 44 and the spiral plate III 411, and a plurality of movable devices 5 are fixedly connected to the opposite surfaces of the spiral plate II 410 and the spiral plate I 44. The bracket 1 is inclined, so that the extruder body 4 at its upper end is inclined, thereby facilitating the movement of the molten raw material towards the extrusion port 413. The angle corresponding to the spiral plate II 410 from one end to the other end is at least 720°.

[0032] A plurality of through holes are provided on the spiral plate II 410. It is convenient for the raw material reaching the molten state to flow towards the spiral plate III 411 and be pushed out from the extrusion port 413 through the spiral plate III 411.

[0033] The diameters of the through holes on the spiral plate II 410 gradually decrease in the direction from being close to the spiral plate I 44 to being far from the spiral plate I 44. The gradually decreasing diameters of the through holes can effectively intercept particles of various diameters.

[0034] A gap is left between the spiral plate II 410 and the spiral plate I 44, and the movable device 5 is located in this gap. The raw material is stirred through the movable device 5 in this gap, which is convenient for uniform heating.

[0035] An arc-shaped groove I 45 and two arc-shaped grooves II 46 are provided on the inner wall of the housing 41 at the gap between the spiral plate II 410 and the spiral plate I 44; the two ends of the two arc-shaped grooves II 46 communicate with each other, and the two ends of each arc-shaped groove II 46 are respectively communicated with the two ends of the arc-shaped groove I 45; a groove 47 is provided on the inner wall of the housing 41 between the two arc-shaped grooves II 46, and a round rod 48 connected to the inner wall of the housing 41 through a bearing is provided between the two arc-shaped grooves II 46; three transmission rods 49 are fixedly connected to the outer circumferential surface of the round rod 48, one of the transmission rods 49 is located in the arc-shaped groove I 45, and one of the remaining two transmission rods 49 is located in the groove 47 and the other is located in one of the arc-shaped grooves II 46.

[0036] The included angle between the arc-shaped groove Ⅰ45 and each arc-shaped groove Ⅱ46 is equal.

[0037] The movable device 5 includes a connecting rod 51; both ends of the connecting rod 51 are fixedly connected to the opposite surfaces of the spiral plate Ⅰ44 and the spiral plate Ⅱ410 respectively, and a sliding rod 52 slidably engaged with the connecting rod 51 is arranged on the connecting rod 51; the sliding rod 52 is slidably engaged with the arc-shaped groove Ⅰ45 and the arc-shaped groove Ⅱ46. When the sliding rod 52 moves, it enters the two arc-shaped grooves Ⅱ46 from the arc-shaped groove Ⅰ45 respectively, thereby changing the stirring direction and ensuring a more sufficient stirring effect.

[0038] The connecting rod 51 is parallel to the rotating shaft 43.

[0039] An odd number of the movable devices 5 are provided, and the number of the movable devices 5 is greater than or equal to 3. Arranging an odd number of movable devices 5 enables the same movable device 5 to enter different arc-shaped grooves Ⅱ46 when moving to the positions of the arc-shaped groove Ⅰ45 and the arc-shaped groove Ⅱ46 in adjacent two times, thereby ensuring that the insertion rods 53 at each position can clean the corresponding perforations, avoiding the blockage of the perforations at a certain position and affecting the flow rate.

[0040] A plurality of insertion rods 53 slidably engaged with the corresponding perforations on the spiral plate Ⅱ410 are fixedly connected to the side surface of the sliding rod 52.

[0041] The working principle of the present invention is as follows: The support 1 is inclined so that the end where the extrusion port 413 is located is lower than the other end. When using this device, the raw materials are put into the feeding funnel 42. Under the action of gravity, the raw materials move into the interior of the housing 41 and enter the spiral plate Ⅰ44. The motor is started, and the motor drives the rotating shaft 43 to rotate through the transmission 3, thereby driving the spiral plate Ⅰ44, the spiral plate Ⅱ410 and the spiral plate Ⅲ411 to rotate. Since the spiral directions of the spiral plate Ⅱ410 and the spiral plate Ⅰ44 are opposite, when the spiral plate Ⅰ44 pushes the raw materials in the direction of the extrusion port 413, the spiral plate Ⅱ410 pushes the raw materials in the direction of the spiral plate Ⅰ44. The housing 41 is provided with heating wires to heat the raw materials. After the raw materials reach the molten state, due to the inclination of the housing 41 along with the support 1, the molten raw materials move through the perforations in the direction of the spiral plate Ⅲ411 under the action of gravity. When the incompletely molten particles contact the plate surface of the spiral plate Ⅱ410, they cannot pass through the perforations. Under the continuous accumulation and the impact of the molten raw materials, the particles approach the position where the spiral plate Ⅱ410 contacts the inner wall of the housing 41, and then under the thrust when the spiral plate Ⅱ410 rotates, the particles move in the direction of the spiral plate Ⅰ44, thereby avoiding the long-term accumulation of particles in the spiral plate Ⅱ410 and preventing blockage. At the same time, the particles can re-enter the gap between the spiral plate Ⅱ410 and the spiral plate Ⅰ44, facilitating mixing with other raw materials;

[0042] During the rotation of the spiral plate I 44 and the spiral plate II 410, the opposite surfaces of the spiral plate I 44 and the spiral plate II 410 also drive the connecting rod 51 to rotate. Since the spiral plate I 44 and the spiral plate II 410 are relatively stationary during the rotation process, during the rotation of the connecting rod 51, the connecting rod 51 drives the sliding rod 52 to slide in the arc-shaped groove I 45 and the arc-shaped groove II 46, stirring the raw materials at the gap between the spiral plate I 44 and the spiral plate II 410 to ensure uniform heating;

[0043] As shown in the attached Figure 8 、 13 In the process of the connecting rod 51 rotating around the rotating shaft 43, the spiral plate I 44 and the spiral plate II 410 rotate accordingly, and then drive the connecting rod 51 fixedly connected between the spiral plate I 44 and the spiral plate II 410 to rotate, so as to drive the sliding rod 52 to move in the arc-shaped groove I 45. When the sliding rod 52 moves to the connection between the arc-shaped groove I 45 and the arc-shaped groove II 46 (as shown in the state of Figure 13 ), since the transmission rod 49 located in the arc-shaped groove I 45 abuts against the inner wall on one side of the arc-shaped groove I 45, when the sliding rod 52 contacts the transmission rod 49 located in the arc-shaped groove I 45, because the transmission rod 49 located in the arc-shaped groove I 45 abuts against the inner wall of the arc-shaped groove I 45, the transmission rod 49 located in the arc-shaped groove I 45 cannot move in the direction of the arc-shaped groove II 46, so it cannot push the transmission rod 49 to move. Therefore, blocked by the transmission rod 49 in the arc-shaped groove I 45, the sliding rod 52 moves to the Figure 8 、 13 As shown in the left direction, it continues to slide into the arc-shaped groove II 46. There is a second transmission rod 49 in this arc-shaped groove II 46. When the sliding rod 52 moves in this arc-shaped groove II 46, it pushes the second transmission rod 49 to move, and then drives the round rod 48 to rotate, so that the second transmission rod 49 moves into the groove 47. The third transmission rod 49 located in the groove 47 moves to the Figure 8 、 13 As shown in the right direction of the arc-shaped groove II 46. At the same time, the round rod 48 also drives the transmission rod 49 located in the arc-shaped groove I 45 to rotate, so that it abuts against the inner wall on the other side of the arc-shaped groove I 45. When the sliding rod 52 of the next movable device 5 moves to the connection between the arc-shaped groove I 45 and the arc-shaped groove II 46, it will move to the Figure 8 、 13 As shown in the right direction of the arc-shaped groove II 46 under the block of the transmission rod 49 located in the arc-shaped groove I 45, so that the sliding rods 52 of two adjacent movable devices 5 will not enter the same arc-shaped groove II 46, and then the moving trajectories of the sliding rods 52 of two adjacent movable devices 5 are different, so that the stirring directions are different, and thus it can ensure more thorough stirring;

[0044] Since there is an included angle between the arc groove Ⅰ45 and the arc groove Ⅱ46, and the included angle is less than 180°, the horizontal distances from the lowest points of the two arc grooves Ⅱ46 to the spiral plate Ⅱ410 are different. Therefore, when the slide rods 52 on the movable device 5 slide into the two arc grooves Ⅱ46 respectively, the distances between the slide rods 52 and the spiral plate Ⅱ410 are different. When the slide rod 52 moves into the arc groove Ⅱ46 closer to the spiral plate Ⅱ410, the insertion rod 53 on the slide rod 52 is inserted into the perforation on the outermost end face of the spiral plate Ⅱ410, and the particles stuck in the perforation can be pushed out, thus avoiding the occurrence of perforation blockage.

Claims

1. An insulation layer extruder for cable manufacturing, characterized in that: The invention comprises a transmission gear (2), a transmission (3), an extruder body (4) and a movable device (5); the extruder body (4) is fixedly mounted on the upper end of a bracket (1), and the extruder body (4) comprises a housing (41); a rotating shaft (43) is provided at the center of the housing (41), one end of the rotating shaft (43) passes through the housing (41) and is fixedly connected to an output shaft of the transmission (3); a transmission gear (2) is fixedly connected to the input shaft of the transmission (3), and the transmission gear (2) meshes with a gear on an output shaft of a motor fixedly connected to the bracket (1); an end of the housing (41) away from the transmission (3) is provided with an extrusion port (413); the rotating shaft (43) ) is connected to the inner wall of the housing (41) through a fixing member (412); the upper end of the housing (41) is fixedly connected to a feed hopper (42) which is in communication with the interior of the housing (41); a spiral plate I (44), a spiral plate II (410) and a spiral plate III (411) are fixedly connected to the rotating shaft (43) in sequence from the end where the feed hopper (42) is located to the end where the extrusion port (413) is located; the rotation direction of the spiral plate II (410) is opposite to that of the spiral plate I (44) and the spiral plate III (411), and a plurality of movable devices (5) are fixedly connected to the opposite surfaces of the spiral plate II (410) and the spiral plate I (44); The spiral plate II (410) is provided with a plurality of through holes; The movable device (5) comprises a connecting rod (51); the two ends of the connecting rod (51) are respectively fixedly connected to the opposite surfaces of the spiral plate I (44) and the spiral plate II (410); the connecting rod (51) is provided with a sliding rod (52) slidably matched with the connecting rod (51); the sliding rod (52) is slidably matched with the arc groove I (45) and the arc groove II (46); A plurality of insertion rods (53) are fixedly connected to the side of the slide rod (52) and are slidably matched with the perforations at corresponding positions on the spiral plate II (410); An arc groove I (45) and two arc grooves II (46) are provided on the inner wall of the housing (41) in the gap between the spiral plate II (410) and the spiral plate I (44); the two ends of the two arc grooves II (46) are connected to each other, and the two ends of each arc groove II (46) are respectively connected to the two ends of the arc groove I (45); a groove (47) is provided on the inner wall of the housing (41) between the two arc grooves II (46); a round rod (48) connected to the inner wall of the housing (41) through a bearing is provided between the two arc grooves II (46); three transmission rods (49) are fixedly connected to the outer circumferential surface of the round rod (48), one of the transmission rods (49) is located in the arc groove I (45), and one of the remaining two transmission rods (49) is located in the groove (47) and the other is located in one of the arc grooves II (46).

2. The insulation layer extruder for cable manufacturing according to claim 1, characterized in that: The diameter of the perforations on the spiral plate II (410) gradually decreases from the direction close to the spiral plate I (44) to the direction away from the spiral plate I (44).

3. The insulation layer extruder for cable manufacturing according to claim 2, characterized in that: A gap is left between the spiral plate II (410) and the spiral plate I (44), and the movable device (5) is located in the gap.

4. The insulation layer extruder for cable manufacturing according to claim 3, characterized in that: The included angles of the arc-shaped groove I (45) and each arc-shaped groove II (46) are equal.

5. The insulation layer extruder for cable manufacturing according to claim 4, characterized in that: The connecting rod (51) is parallel to the rotating shaft (43).

6. The insulation layer extruder for cable manufacturing according to claim 5, characterized in that: The movable devices (5) are provided in odd number, and the number of the movable devices (5) is greater than or equal to 3.

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