Photovoltaic cable outer sheath extrusion device

Abstract

The invention relates to the technical field of cable outer sheath processing, and discloses a photovoltaic cable outer sheath extrusion device which comprises a base, a cable body is arranged in a sleeve in a transmission mode, stirring boxes are connected to the positions, close to a driving box, of the two sides of an extrusion molding cylinder, and the stirring boxes are connected with a driving motor. A plurality of first stirring blades are arranged on the outer wall of the stirring shaft, the second conveying shaft is used for driving the stirring shaft to rotate, a plurality of second stirring blades are mounted on the outer wall of the lifting sleeve, and the driving roller rotates to drive the lifting sleeve to do circumferential upward and circumferential downward reciprocating motion. According to the photovoltaic cable outer sheath extrusion device, a plurality of second stirring blades which do up-and-down reciprocating circumferential rotation are arranged in a material mixing barrel to mix fed extrusion molding raw materials, and after the raw materials fall into a stirring box, the raw materials are stirred by a plurality of first stirring blades, so that the mixing uniformity of the cable outer sheath extrusion molding raw materials is improved; and the extrusion molding quality of the outer sheath is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cable outer sheath processing, and in particular to a photovoltaic cable outer sheath extrusion device. Background Art

[0002] The cable sheath is the outermost layer of the cable, generally made of polyvinyl chloride and other materials. Its main function is to protect the core from corrosion by the surrounding environment and improve the functionality of the cable. At the same time, it can also play an insulating role and extend the service life. The cable sheath is extruded by an extruder.

[0003] During the extrusion molding process of the cable outer sheath, the uniformity of raw material mixing plays a key role. Otherwise, bubbles and cracks will appear in the plastic layer, or uneven strength will occur due to uneven thickness of the extrusion, which will affect the processing quality of the cable outer sheath.

[0004] The Chinese utility model patent with patent number CN202320074553.6 discloses an extruder for producing cable sheath materials, including a device body, an extrusion tube is arranged on one side of the device body, a mixing tank is arranged on the extrusion tube, a mixing bin is arranged in the mixing tank, a mounting plate is fixedly connected to the top wall inside the mixing bin, a rotating tube is rotatably connected to the bottom wall of the mounting plate through a bearing seat, a rotating rod is rotatably connected to the through opening opened on the rotating tube through a bearing seat, a first stirring blade is arranged at the end of the rotating tube, and a second stirring blade is arranged at the end of the rotating rod and below the first stirring blade. The extruder for producing the cable sheath material of the above structure is provided with a first stirring blade and a second stirring blade that rotate relatively to each other. The two stirring blades stir the raw materials in the mixing bin in different directions. Although this has the effect of improving the mixing efficiency of the raw materials, it can only stir the raw materials at the bottom. If the raw materials are fed separately, it is necessary to mix the raw materials up and down and stir them in a circular manner. Therefore, the above-mentioned comparative document is difficult to achieve the stirring of the extruded raw materials up and down, which affects the uniformity of the raw material mixing. Therefore, we have made improvements to this and proposed a photovoltaic cable outer sheath extrusion device. Summary of the invention

[0005] In view of the problem that the uniformity of mixing of extruded raw materials needs to be improved during the extrusion molding process of the above-mentioned existing cable outer sheath, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a photovoltaic cable outer sheath extrusion device, which aims to improve the uniformity of mixing of the cable outer sheath extrusion raw materials and ensure the extrusion molding quality of the outer sheath by arranging a plurality of second stirring blades that rotate up and down in a mixing barrel and a plurality of first stirring blades in a mixing box.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic cable outer sheath extrusion device, comprising a base, a drive box is arranged on one side of the base, a recovery box is arranged on the other side of the base, an extrusion cylinder is arranged above the base, a mixing barrel is arranged on the upper side of the extrusion cylinder close to the drive box, a first feed shaft is arranged inside the extrusion cylinder, a sleeve is concentrically arranged inside the first feed shaft, one end of the sleeve extends to a position close to the recovery box, and the other end of the sleeve extends upward and concentrically penetrates to the top of the mixing barrel, and a cable body is arranged in the sleeve for transmission;

[0008] A stirring box is connected to both sides of the extrusion cylinder and near the driving box. A second feeding shaft is arranged in the stirring box. The second feeding shaft is arranged coaxially with the first feeding shaft. The second feeding shaft is located between the first feeding shaft and the driving box. A motor for driving the second feeding shaft to rotate is arranged in the driving box. Two stirring shafts are symmetrically arranged in the stirring box. A plurality of first stirring blades are arranged on the outer wall of the stirring shaft. The second feeding shaft is used to drive the stirring shaft to rotate. The two stirring shafts are used to drive the first feeding shaft to rotate.

[0009] Two driving rollers are symmetrically arranged on the top of the mixing barrel, and the driving rollers are used to drive the cable body to transport. A stirring assembly is arranged in the mixing barrel, and the stirring assembly includes a lifting sleeve concentrically sleeved outside the sleeve, and a plurality of second stirring blades are installed on the outer wall of the lifting sleeve. The driving rollers rotate to drive the lifting sleeve to reciprocate upward and downward in a circular shape, and a feeding pipe is connected to the side wall of the mixing barrel.

[0010] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, a motor is installed on the top of the mixing barrel, the output shaft of the motor is connected to the second gear disc, and one end of the two driving rollers is concentrically installed with a third gear disc, the second gear disc is meshed with the two third gear discs, and the two ends of the driving roller are movably installed with positioning seats, and the positioning seats are installed above the mixing barrel.

[0011] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the stirring assembly also includes a vertical shaft, the vertical shaft is vertically movable and passes through the top of the mixing barrel, the top of the vertical shaft is movably connected with a connecting rod, the top of the connecting rod is movably connected to the non-center position of the end of the driving roller, a movable ring is concentrically installed on the top of the lifting sleeve, the bottom end of the vertical shaft is connected to a T-shaped slider, and the upper end surface of the movable ring is provided with an annular sliding groove matching with it.

[0012] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the bottom end of the mixing barrel is connected to a discharge barrel, a discharge area is formed between the outer wall of the sleeve and the inner wall of the discharge barrel, the outer wall of the sleeve is provided with a spiral track, the spiral track is located in the mixing barrel, the inner wall of the lifting sleeve is movably coordinated with the spiral track, and the feed pipe is installed within the up and down moving range of the lifting sleeve.

[0013] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the outer wall of the first feed shaft is installed with a first spiral feed blade, the outer wall of the first feed shaft is provided with a first gear group near the position of the second feed shaft, the outer wall of the second feed shaft is provided with a second spiral feed blade, the outer walls of the second feed shaft are provided with a second gear group and a third gear group at both ends of the outer wall, and three first gear discs are concentrically assembled on the outside of the two stirring shafts, and the first gear discs cooperate with the corresponding first gear group, second gear group or third gear group.

[0014] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the first feed shaft is connected to an end plate at one end close to the second feed shaft, the sleeve movably passes through the end plate, and the inner diameter of the first feed shaft is larger than the outer diameter of the sleeve.

[0015] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the end of the extrusion cylinder close to the recovery box is coaxially connected to the discharge mold, the end of the first feed shaft close to the discharge mold is coaxially connected to the guide sleeve, the end of the guide sleeve close to the discharge mold is coaxially installed with a molding sleeve, the inner diameter of the molding sleeve is smaller than the outer diameter of the sleeve, and a molding channel is formed between the inner wall of the discharge mold and the outer wall of the molding sleeve.

[0016] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: an annular cavity is arranged in the discharging mold, and a plurality of first contact plates are embedded and installed on the inner wall of the discharging mold, the first contact plates are connected to the second cooling pipes, and the second cooling pipes are connected to the cooling module.

[0017] As a preferred solution of the photovoltaic cable outer sheath extrusion device described in the present invention, wherein: the outer wall of the sleeve is movably sleeved with a spacer ring, the spacer ring is connected to the inner wall of the first feed shaft, the spacer ring is located near the guide sleeve, a plurality of second contact plates are embedded at one end of the first feed shaft near the guide sleeve, a cooling cavity is formed between the inner wall of the molding sleeve and the outer wall of the sleeve, and between the inner wall of the guide sleeve and the outer wall of the sleeve, a connecting sleeve is movably connected at the position of the second contact plate outside the first feed shaft, the connecting sleeve is connected to the inner wall of the extrusion cylinder through a bracket, a first cooling pipe is connected to one side of the connecting sleeve, the first cooling pipe passes through the outside of the extrusion cylinder, and the first cooling pipe is connected to the cooling module.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention mixes the extrusion raw materials fed into the mixing barrel by arranging a plurality of second stirring blades that rotate in a reciprocating circle up and down. After the raw materials fall into the mixing box, they are stirred by a plurality of first stirring blades, thereby improving the uniformity of mixing the extrusion raw materials of the cable outer sheath and ensuring the extrusion molding quality of the outer sheath.

[0020] 2. The present invention, by arranging a sleeve in the mixing barrel and utilizing the operation of the stirring assembly, realizes driving the cable body, and at the same time utilizes the arrangement of the sleeve to control the feeding speed of the mixed material in the mixing barrel, thereby further improving the uniformity of raw material mixing.

[0021] 3. The present invention can achieve the connection between the outer sheath and the cable by controlling the speed of pulling out the cable body in cooperation with the outer sheath during the extrusion process of the outer sheath, thereby improving the processing efficiency of the cable.

[0022] 4. The present invention realizes uniform cooling effect on the inside and outside of the outer sheath by performing heat exchange and cooling on the discharge die and the outer wall of the cable body during the extrusion process of the outer sheath, thereby improving the uniformity of the outer sheath molding and the assembly effect of the outer sheath and the cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0024] in:

[0025] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic cable outer sheath extrusion device of the present invention.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the extrusion end of the photovoltaic cable outer sheath extrusion device of the present invention.

[0027] Figure 3 This is a schematic diagram of the internal structure of the stirring box of the photovoltaic cable outer sheath extrusion device of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the first feed shaft of the photovoltaic cable outer sheath extrusion device of the present invention.

[0029] Figure 5 It is a schematic structural diagram of a mixing barrel of a photovoltaic cable outer sheath extrusion device of the present invention.

[0030] Figure 6 It is a schematic diagram of the side structure of the mixing barrel of the photovoltaic cable outer sheath extrusion device of the present invention.

[0031] Figure 7 It is a schematic structural diagram of the stirring assembly of the photovoltaic cable outer sheath extrusion device of the present invention.

[0032] Figure 8 It is a schematic diagram of the cross-sectional structure of the mixing barrel of the photovoltaic cable outer sheath extrusion device of the present invention.

[0033] Description of reference numerals:

[0034] 1. Base; 2. Drive box; 21. Motor; 3. Cooling module; 31. First cooling pipe; 32. Second cooling pipe; 4. Recovery box;

[0035] 5. Extrusion cylinder; 51. Discharging die; 52. First contact plate; 53. Forming channel; 54. Mixing box; 55. Mixing shaft; 56. First toothed disc; 57. First mixing blade;

[0036] 6. Mixing barrel; 61. Feed pipe; 62. Discharge barrel; 63. Motor; 64. Second gear plate; 65. Driving roller; 66. Third gear plate; 67. Positioning seat; 68. Stirring assembly; 681. Connecting rod; 682. Vertical shaft; 683. Movable ring; 684. Lifting sleeve; 685. Second stirring blade;

[0037] 7. First feeding shaft; 71. End plate; 72. First latching gear set; 73. First spiral feeding blade; 74. Second contact plate; 75. Spacer ring; 76. Guide sleeve; 77. Forming sleeve; 78. Cooling chamber; 79. Connecting sleeve;

[0038] 8. Sleeve; 81. Spiral track; 9. Second feeding shaft; 91. Second spiral feeding blade; 92. Second latching tooth group; 93. Third latching tooth group; 10. Cable body. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] Example 1

[0041] Reference Figure 1-8, which is the first embodiment of the present invention, provides a photovoltaic cable outer sheath extrusion device, the photovoltaic cable outer sheath extrusion device comprises a base 1, a driving box 2 is arranged on one side of the base 1, the driving box 2 is used to drive the extrusion device to run, a recycling box 4 is arranged on the other side of the base 1, the recycling box 4 is used to drive and pull out the extruded outer sheath and the cable body 10 together, an extrusion cylinder 5 is arranged above the base 1, a mixing barrel 6 is arranged above the extrusion cylinder 5 and close to the driving box 2, the mixing barrel 6 is used to mix the feed raw materials, a first feed shaft 7 is arranged in the extrusion cylinder 5, a sleeve 8 is concentrically arranged in the first feed shaft 7, one end of the sleeve 8 extends to a position close to the recycling box 4, the other end of the sleeve 8 extends upward and concentrically penetrates to the top of the mixing barrel 6, a cable body 10 is arranged in the sleeve 8, the outer diameter of the cable body 10 is equal to the inner diameter of the sleeve 8, and the sleeve 8 is made of a heat-insulating material to avoid being affected by the extrusion temperature;

[0042] A stirring box 54 is connected to both sides of the extrusion cylinder 5 and close to the driving box 2. A second feeding shaft 9 is arranged in the stirring box 54. The second feeding shaft 9 is arranged coaxially with the first feeding shaft 7. The second feeding shaft 9 is located between the first feeding shaft 7 and the driving box 2. The bending part of the sleeve 8 is located between the first feeding shaft 7 and the second feeding shaft 9. A motor 21 for driving the second feeding shaft 9 to rotate is arranged in the driving box 2. Two stirring shafts 55 are symmetrically arranged in the stirring box 54. A plurality of first stirring blades 57 are arranged on the outer wall of the stirring shaft 55. The second feeding shaft 9 is used to drive the stirring shaft 55 to rotate. The two stirring shafts 55 are used to drive the first feeding shaft 7 to rotate. The first stirring blades 57 are used to mix the mixed raw materials falling into the stirring box 54 again before transportation.

[0043] Two driving rollers 65 are symmetrically arranged on the top of the mixing barrel 6. The driving rollers 65 are used to drive the cable body 10 to be transported. The outer wall of the driving roller 65 is an arc-shaped structure, which is used to increase the fitting area with the outer wall of the cable body 10. A stirring assembly 68 is arranged in the mixing barrel 6. The stirring assembly 68 includes a lifting sleeve 684 concentrically sleeved outside the sleeve 8. A plurality of second stirring blades 685 are installed on the outer wall of the lifting sleeve 684. The driving roller 65 rotates to drive the lifting sleeve 684 to reciprocate upward and downward in a circular manner. The side wall of the mixing barrel 6 is connected to the feeding pipe 61. The driving roller 65 can not only be used to drive the transportation of the cable body 10, but also to control the movement of the lifting sleeve 684. The plurality of second stirring blades 685 on the outer wall of the lifting sleeve 684 move downward in a circular manner together, and then move upward in a circular manner to mix the raw materials input from the feeding pipe 61 up and down and in a circular manner.

[0044] In conjunction with the instruction manual Figure 5 and Figure 6A motor 63 is installed on the top of the mixing barrel 6, and the output shaft of the motor 63 is connected to the second gear disc 64. One end of the two driving rollers 65 is concentrically installed with a third gear disc 66, and the second gear disc 64 is meshed with the two third gear discs 66. Positioning seats 67 are movably installed at both ends of the driving roller 65, and the positioning seats 67 are installed above the mixing barrel 6. The motor 63 drives the second gear disc 64 to rotate, and the second gear disc 64 drives the two third gear discs 66 to rotate in the opposite direction. The two driving rollers 65 drive the cable body 10 to transport downward, and the driving speed is coordinated with the speed at which the recovery box 4 is pulled out.

[0045] In conjunction with the instruction manual Figure 7 and Figure 8 The stirring assembly 68 also includes a vertical shaft 682, which is vertically movable and runs through the top of the mixing barrel 6. The top of the vertical shaft 682 is movably connected with a connecting rod 681. The top of the connecting rod 681 is movably connected to the non-center position of the end of the driving roller 65. A movable ring 683 is concentrically installed on the top of the lifting sleeve 684. The bottom end of the vertical shaft 682 is connected to a T-shaped slider. The upper end surface of the movable ring 683 is provided with an annular sliding groove that cooperates with it. When the driving roller 65 rotates in a circle, the connecting rod 681 pulls the vertical shaft 682 to slide vertically, thereby pushing the movable ring 683 to move back and forth vertically.

[0046] In conjunction with the instruction manual Figure 7 and Figure 8 The bottom end of the mixing barrel 6 is connected to a discharge barrel 62, and a discharge area is formed between the outer wall of the sleeve 8 and the inner wall of the discharge barrel 62. A spiral track 81 is provided on the outer wall of the sleeve 8, and the spiral track 81 is located in the mixing barrel 6. The inner wall of the lifting sleeve 684 is movably matched with the spiral track 81, and the feed pipe 61 is installed within the up and down moving range of the lifting sleeve 684. The lifting sleeve 684 cooperates with the spiral track 81 during the upward or downward movement, so that the movable ring 683 and the lifting sleeve 684 rotate around the spiral track 81, and the T-shaped slider at the bottom end of the vertical shaft 682 slides in the annular slide groove of the movable ring 683, thereby realizing the circumferential rotation and stirring of the second stirring blade 685.

[0047] In conjunction with the instruction manual Figure 3 and Figure 4The outer wall of the first feeding shaft 7 is provided with a first spiral feeding blade 73, the outer wall of the first feeding shaft 7 is provided with a first latching tooth group 72 near the second feeding shaft 9, the outer wall of the second feeding shaft 9 is provided with a second spiral feeding blade 91, the outer walls of the second feeding shaft 9 are provided with a second latching tooth group 92 and a third latching tooth group 93 at both ends, and three first tooth discs 56 are respectively concentrically mounted on the outside of the two stirring shafts 55, and the first tooth disc 56 cooperates with the corresponding first latching tooth group 72, the second latching tooth group 92 or the third latching tooth group 93. When the motor 21 drives the second feeding shaft 9 to rotate in a circle, the second latching tooth group 92 and the third latching tooth group 93 are engaged with each other. The group 93 is meshed with the first toothed disc 56, so that the stirring shaft 55 rotates in a circle, thereby driving the first feed shaft 7 to rotate in a circle. It should be noted that the three first toothed discs 56 on the outer wall of one stirring shaft 55 are fixedly installed concentrically with the stirring shaft 55, and the three first toothed discs 56 on the outer wall of the other stirring shaft 55 are movably connected with the stirring shaft 55. In order to ensure the balance of rotation of the second feed shaft 9 and the first feed shaft 7, two stirring shafts 55 are set. The conveying direction of the second spiral feed blade 91 is to convey to the first feed shaft 7, and the conveying direction of the first spiral feed blade 73 is to convey to the recovery box 4.

[0048] In this embodiment, the extruded raw materials are mixed by arranging a plurality of second stirring blades 685 which rotate in a reciprocating circle up and down in the mixing barrel 6. The setting of the sleeve 8 can control the feeding speed of the mixed material in the mixing barrel 6, and further improve the uniformity of the raw material mixing. After the raw material falls into the mixing box 54, it is stirred by a plurality of first stirring blades 57, so that the raw material is further stirred before extrusion output, thereby improving the uniformity of the mixing of the cable outer sheath extrusion raw materials and ensuring the extrusion molding quality of the outer sheath.

[0049] Example 2

[0050] Reference Figure 1 , Figure 2 and Figure 4 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0051] One end of the first feeding shaft 7 close to the second feeding shaft 9 is connected to an end plate 71, and the sleeve 8 movably passes through the end plate 71. The inner diameter of the first feeding shaft 7 is larger than the outer diameter of the sleeve 8. The sleeve 8 is made of thermal insulation material to reduce the influence of the extrusion temperature on the cable body 10 during transportation.

[0052] One end of the extrusion cylinder 5 close to the recycling box 4 is coaxially connected to the discharge mold 51, and one end of the first feed shaft 7 close to the discharge mold 51 is coaxially connected to the guide sleeve 76. The end of the guide sleeve 76 close to the discharge mold 51 is coaxially installed with a molding sleeve 77. The inner diameter of the molding sleeve 77 is smaller than the outer diameter of the sleeve 8. A molding channel 53 is formed between the inner wall of the discharge mold 51 and the outer wall of the molding sleeve 77. When the sleeve 8 is close to the molding channel 53, the outer wall of the sleeve 8 gradually becomes thinner, and the inner wall of the molding channel 53 gradually approaches the outer wall of the cable body 10.

[0053] In this embodiment, the extruded raw material is initially extruded between the inner wall of the extrusion cylinder 5 and the outer wall of the guide sleeve 76, and finally discharged and formed at the molding channel 53. After molding, due to thermal expansion and contraction, it is directly wrapped around the cable body 10 with the same pulling speed, thereby improving the extrusion processing of the cable outer sheath and the cable processing efficiency.

[0054] The remaining structures are the same as those of Example 1.

[0055] Example 3

[0056] Reference Figure 1 and Figure 2 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that:

[0057] An annular cavity is provided in the discharge mold 51, and a plurality of first contact plates 52 are embedded and installed on the inner wall of the discharge mold 51. The first contact plate 52 is connected to the second cooling pipe 32, and the second cooling pipe 32 is connected to the cooling module 3. The cooling module 3 is used to provide a heat exchange function to the discharge mold 51, so that the temperature of the outer sheath begins to decrease at the molding channel 53, so that it can be mounted on the outside of the cable body 10 in a suitable state and temperature.

[0058] The outer wall of the sleeve 8 is movably connected with a spacer ring 75, and the spacer ring 75 is connected to the inner wall of the first feed shaft 7. The spacer ring 75 is located near the guide sleeve 76. A plurality of second contact plates 74 are embedded at one end of the first feed shaft 7 near the guide sleeve 76. A cooling cavity 78 is formed between the inner wall of the molding sleeve 77 and the outer wall of the sleeve 8, and between the inner wall of the guide sleeve 76 and the outer wall of the sleeve 8. A connecting sleeve 79 is movably connected to the outer portion of the first feed shaft 7 at a position corresponding to the second contact plate 74. The connecting sleeve 79 is connected to the inner wall of the extrusion cylinder 5 through a bracket. The connecting sleeve A first cooling pipe 31 is connected to one side of 79. The first cooling pipe 31 passes through the outside of the extrusion cylinder 5. The first cooling pipe 31 is connected to the cooling module 3. The spacer ring 75 and the connecting sleeve 79 are made of thermal insulation material. The cooling module 3 provides a heat exchange function to the first cooling pipe 31, so that in a section of the outer sheath extrusion material, the temperature of the outer wall of the cable body 10 is lower, which is more conducive to the cooling of the inner wall after the outer sheath is formed, so that the inside and outside of the outer sheath are evenly cooled, which is beneficial to the forming of the outer sheath and the connection between the outer sheath and the cable body 10.

[0059] The remaining structure is the same as that of Example 2.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic cable outer sheath extrusion device, characterized in that: The invention comprises a base (1), a driving box (2) is arranged on one side of the base (1), a recovery box (4) is arranged on the other side of the base (1), an extrusion cylinder (5) is arranged above the base (1), a mixing barrel (6) is arranged above the extrusion cylinder (5) and close to the driving box (2), a first feed shaft (7) is arranged inside the extrusion cylinder (5), a sleeve (8) is coaxially arranged inside the first feed shaft (7), one end of the sleeve (8) extends to a position close to the recovery box (4), and the other end of the sleeve (8) extends upward and coaxially penetrates to the top of the mixing barrel (6), and a cable body (10) is arranged inside the sleeve (8); A stirring box (54) is connected to both sides of the extrusion cylinder (5) and close to the driving box (2). A second feed shaft (9) is arranged in the stirring box (54). The second feed shaft (9) is arranged coaxially with the first feed shaft (7). The second feed shaft (9) is located between the first feed shaft (7) and the driving box (2). A motor (21) for driving the second feed shaft (9) to rotate is arranged in the driving box (2). Two stirring shafts (55) are symmetrically arranged in the stirring box (54). The outer wall of the stirring shaft (55) is provided with a plurality of first stirring blades (57). The second feed shaft (9) is used to drive the stirring shaft (55) to rotate, and the two stirring shafts (55) are used to drive the first feed shaft (7) to rotate. Two driving rollers (65) are symmetrically arranged on the top of the mixing barrel (6), and the driving rollers (65) are used to drive the cable body (10) to be transported. A stirring assembly (68) is arranged inside the mixing barrel (6), and the stirring assembly (68) includes a lifting sleeve (684) concentrically sleeved outside the sleeve (8), and a plurality of second stirring blades (685) are installed on the outer wall of the lifting sleeve (684). The driving rollers (65) rotate to drive the lifting sleeve (684) to reciprocate upward and downward in a circular manner. The side wall of the mixing barrel (6) is connected to a feeding pipe (61).

2. A photovoltaic cable outer sheath extrusion device according to claim 1, characterized in that: A motor (63) is installed on the top of the mixing barrel (6), and the output shaft of the motor (63) is drivingly connected to a second gear disc (64). One end of the two driving rollers (65) is concentrically installed with a third gear disc (66), and the second gear disc (64) is meshed with the two third gear discs (66). Positioning seats (67) are movably installed at both ends of the driving roller (65), and the positioning seats (67) are installed above the mixing barrel (6).

3. A photovoltaic cable outer sheath extrusion device according to claim 2, characterized in that: The stirring assembly (68) also includes a vertical shaft (682), which is vertically movable and passes through the top of the mixing barrel (6), and the top of the vertical shaft (682) is movably connected to a connecting rod (681), and the top of the connecting rod (681) is movably connected to the end of the driving roller (65) at a non-center position. A movable ring (683) is concentrically installed at the top of the lifting sleeve (684), and the bottom end of the vertical shaft (682) is connected to a T-shaped sliding block, and the upper end surface of the movable ring (683) is provided with an annular sliding groove that cooperates with it.

4. A photovoltaic cable outer sheath extrusion device according to claim 3, characterized in that: The bottom end of the mixing barrel (6) is connected to a discharge barrel (62), and a discharge area is formed between the outer wall of the sleeve (8) and the inner wall of the discharge barrel (62). The outer wall of the sleeve (8) is provided with a spiral track (81), and the spiral track (81) is located in the mixing barrel (6). The inner wall of the lifting sleeve (684) is movably matched with the spiral track (81), and the feed pipe (61) is installed within the up and down movement range of the lifting sleeve (684).

5. A photovoltaic cable outer sheath extrusion device according to claim 4, characterized in that: The outer wall of the first feed shaft (7) is provided with a first spiral feed blade (73); the outer wall of the first feed shaft (7) is provided with a first latching tooth group (72) near the second feed shaft (9); the outer wall of the second feed shaft (9) is provided with a second spiral feed blade (91); the outer ends of the second feed shaft (9) are provided with a second latching tooth group (92) and a third latching tooth group (93); the two stirring shafts (55) are respectively provided with three first tooth discs (56) concentrically mounted on the outside; the first tooth discs (56) cooperate with the corresponding first latching tooth group (72), second latching tooth group (92) or third latching tooth group (93).

6. A photovoltaic cable outer sheath extrusion device according to claim 5, characterized in that: One end of the first material feeding shaft (7) close to the second material feeding shaft (9) is connected to an end plate (71), the sleeve (8) movably passes through the end plate (71), and the inner diameter of the first material feeding shaft (7) is greater than the outer diameter of the sleeve (8).

7. A photovoltaic cable outer sheath extrusion device according to claim 6, characterized in that: The end of the extrusion cylinder (5) close to the recovery box (4) is coaxially connected to a discharge mold (51), the end of the first feed shaft (7) close to the discharge mold (51) is coaxially connected to a guide sleeve (76), and the end of the guide sleeve (76) close to the discharge mold (51) is coaxially mounted with a molding sleeve (77), the inner diameter of the molding sleeve (77) is smaller than the outer diameter of the sleeve (8), and a molding channel (53) is formed between the inner wall of the discharge mold (51) and the outer wall of the molding sleeve (77).

8. A photovoltaic cable outer sheath extrusion device according to claim 7, characterized in that: An annular cavity is provided in the discharge mold (51), and a plurality of first contact plates (52) are embedded and installed on the inner wall of the discharge mold (51), the first contact plates (52) are connected to second cooling pipes (32), and the second cooling pipes (32) are connected to the cooling module (3).

9. A photovoltaic cable outer sheath extrusion device according to claim 8, characterized in that: The outer wall of the sleeve (8) is movably sleeved with a spacer ring (75), and the spacer ring (75) is connected to the inner wall of the first feed shaft (7). The spacer ring (75) is located near the guide sleeve (76). A plurality of second contact plates (74) are embedded at one end of the first feed shaft (7) near the guide sleeve (76). A cooling cavity (78) is formed between the inner wall of the molding sleeve (77) and the outer wall of the sleeve (8), and between the inner wall of the guide sleeve (76) and the outer wall of the sleeve (8). A connecting sleeve (79) is movably connected to the outside of the first feed shaft (7) at a position corresponding to the second contact plate (74). The connecting sleeve (79) is connected to the inner wall of the extrusion cylinder (5) through a bracket. One side of the connecting sleeve (79) is connected to a first cooling pipe (31), and the first cooling pipe (31) passes through the outside of the extrusion cylinder (5). The first cooling pipe (31) is connected to the cooling module (3).

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