A continuous injection molding machine

Abstract

The present invention relates to the field of cable injection molding technology, and specifically discloses a continuous injection molding machine, comprising: a frame, an injection system, a clamping system and an adjustment mechanism, wherein the injection system and the clamping system are installed on the frame, the adjustment mechanism comprises a first driving member, a first adjusting rod, an adjusting gear, a second adjusting rod and a shifting rod, an adjustment groove is provided in the middle area of ​​a lower mold, the first adjusting rod and the second adjusting rod are respectively arranged at two ends of the adjustment groove, the adjustment gear is rotatably arranged between the first adjusting rod and the second adjusting rod, and is respectively meshed with the first adjusting rod and the second adjusting rod, the first adjusting rod and the second adjusting rod are symmetrically distributed about the center of the adjusting gear, a plurality of shifting rods are respectively arranged on the first adjusting rod and the second adjusting rod, and the first driving member can stop against the first adjusting rod; the continuous injection molding machine of the present invention can shift the cable in the lower mold through the adjustment mechanism, so that the cable moves in the lower mold, and then can automatically adjust the injection molding position of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable injection molding, and in particular to a continuous injection molding machine. Background Art

[0002] Injection-molded cable is a cable product made by wrapping plastic around the wire core through the injection molding process. Injection-molded cable usually includes a cable and a cable head. The cable head is fixed at one end of the cable and is used to electrically connect the cable with other components. The production process of injection-molded cable mainly uses an injection molding machine to heat and melt the plastic raw material, and then injects the molten plastic into the mold cavity containing the wire core through a screw or plunger. After the injection molding is completed, it needs to be cooled and shaped to solidify the plastic and form an insulating layer that tightly wraps the wire core. The insulating layer of the injection-molded cable can provide good electrical insulation and ensure that the insulation resistance between the wire cores and between the wire core and the external environment reaches a high level. Because the injection molding process can tightly wrap the plastic around the wire core, the cable has a certain mechanical strength and flexibility. When subjected to external forces such as stretching, bending or extrusion, it can maintain its structural integrity and stable performance to a certain extent. Some injection-molded cables are also formed with a sheath at the end through the injection molding process. It is located outside the insulation layer. Its main function is to protect the cable from external physical damage, chemical corrosion and environmental factors. The sheath can also fix multiple cables together to facilitate wiring.

[0003] A Chinese patent application with application publication number CN119141775A discloses an injection molding machine for connecting the ends of communication cables. The patent application document includes a base fixedly supported on the ground by an external bracket, a first mold fixedly connected to the base, a rectangular frame fixedly connected to one side of the base, a sleeve block for lifting and reciprocating movement is movably connected to the inner wall of the rectangular frame, a threaded rod driven to rotate by a power mechanism is penetrated and rotatably connected to the top of the rectangular frame, and the sleeve block is penetrated and screwed by the threaded rod, a support seat is fixedly connected to one side of the sleeve block, and lifting rods for lifting and reciprocating movement are penetrated and movably connected near the four corners of the support seat, a second mold for closing with the first mold is fixedly connected to the bottom of the lifting rod, and a clamping mechanism for clamping the cable and a pulling mechanism for straightening the cable are provided on the second mold.

[0004] When injecting the sheath at both ends of the cable, since the cables of different processing batches are of different lengths, it is necessary to adjust the placement of the cable ends according to the length of the cable when injecting the sheath at both ends of the cables of different lengths. The injection molding machine in the above patent application requires the staff to manually adjust the placement of the cable during injection molding. Since the wire core inside the cable is usually made of metal material and the cable itself has a large mass, it is time-consuming and laborious to manually adjust the placement of the cable, resulting in low injection molding efficiency. Therefore, it is necessary to design a continuous injection molding machine that can automatically adjust the placement of the cable. Summary of the invention

[0005] The present invention provides a continuous injection molding machine, aiming to solve the problems in the related art that manual adjustment of the placement position of cables is time-consuming and labor-intensive, and the injection molding efficiency is low.

[0006] The continuous injection molding machine of the present invention comprises: a frame, an injection system, a mold clamping system and an adjustment mechanism;

[0007] The injection system and the clamping system are installed on the frame;

[0008] The mold clamping system comprises an upper mold, a lower mold and a lifting mechanism, wherein the lower mold is arranged on the frame, and the lifting mechanism is installed on the frame, and the lifting mechanism is used to drive the upper mold to approach or move away from the lower mold to realize the mold clamping or mold opening of the upper mold and the lower mold, and an injection cavity is formed when the upper mold and the lower mold are clamped; the injection system is used to inject molten plastic into the injection cavity;

[0009] The adjusting mechanism includes a first driving member, a first adjusting rod, an adjusting gear, a second adjusting rod and a shifting rod. An adjusting groove is provided in the middle area of ​​the lower mold. The first adjusting rod and the second adjusting rod are respectively arranged at two ends of the adjusting groove. The adjusting gear is rotatably arranged between the first adjusting rod and the second adjusting rod, and is respectively engaged with the first adjusting rod and the second adjusting rod. The first adjusting rod and the second adjusting rod are symmetrically distributed about the center of the adjusting gear. A plurality of shifting rods are respectively arranged on the first adjusting rod and the second adjusting rod. The shifting rod is used to shift the cable. The first driving member can stop against the first adjusting rod. The first driving member is used to push the first adjusting rod to move.

[0010] Beneficial effect: the first driving member pushes the first adjusting rod to move, the first adjusting rod drives the adjusting gear to rotate, and the adjusting gear drives the second adjusting rod to move, so that the first adjusting rod and the second adjusting rod move toward each other. During the movement of the first adjusting rod and the second adjusting rod, the lever gradually approaches the cable and makes the cable bend in an S shape in the adjustment groove. Since the cable head and the side wall of the lower mold stop, the other end of the cable is gradually received in the lower mold, and then the injection position of the cable away from one end of the cable head can be adjusted. The continuous injection molding machine of the present invention can automatically adjust the placement position of the cable without the need for staff to manually adjust the placement position of the cable end, thereby improving the injection molding efficiency.

[0011] Preferably, it also includes a clamping mechanism, which includes an upper clamping assembly and a lower clamping assembly, the upper clamping assembly is arranged on the upper mold, and the lower clamping assembly is arranged on the lower mold, the upper clamping assembly and the lower clamping assembly have the same structure and are symmetrically arranged up and down, and the upper clamping assembly and the lower clamping assembly can approach each other and clamp and fix the cable when the mold is closed.

[0012] The effect is that when the mold is closed, the upper clamping assembly and the lower clamping assembly squeeze the cable from the top and bottom respectively, and at the same time the adjustment mechanism moves the cable and straightens the cable. During the injection molding process, the molten plastic can be evenly distributed around the cable to ensure uniform injection.

[0013] Preferably, the lower clamping assembly includes a lower clamping block and a driving unit, the driving unit is used to drive the lower clamping block to move toward the upper mold, the lower clamping block includes a first clamping jaw and a second clamping jaw, the first clamping jaw is provided with a first arc groove, the second clamping jaw is provided with a second arc groove, the first arc groove and the second arc groove are both used to clamp cables, the diameter of the first arc groove is greater than the diameter of the second arc groove, and the upper clamping assembly includes an upper clamping block and a driving unit for driving the upper clamping block.

[0014] The effect is that when the diameter of the cable placed in the accommodating groove is thicker, the cable can be clamped between the first clamping jaws in the upper clamping block and the lower clamping block, and the upper clamping block and the lower clamping block can clamp the cable through the first clamping jaw; when the diameter of the cable placed in the accommodating groove is thinner, the two first clamping jaws approach each other until they stop each other, and at this time the cable is located in the circular hole formed by the mutual abutment of the two first arc grooves, the arc surface end of the first shift block stops with the first clamping jaw, the rotating shaft continues to rotate, and the first shift block slides relative to the first clamping jaw along its arc surface structure. During this process, the second shift block gradually approaches the second clamping jaw and stops with the second clamping jaw. The second shift block can push the second clamping jaw to move, so that the second clamping jaws in the upper clamping block and the lower clamping block approach each other, until the second clamping jaws in the upper clamping block and the lower clamping block respectively stop with the top and bottom ends of the cable, the upper clamping block and the lower clamping block can clamp the cable through the second clamping jaw, and the clamping mechanism can be suitable for cables of different thicknesses, thereby improving versatility.

[0015] Preferably, a sealing bag is provided in the upper mold and the lower mold, and the sealing bag is wrapped around the upper clamp block and the lower clamp block when the mold is closed. Connecting pipelines are provided in the upper mold and the lower mold, and the sealing bag is connected to an external air pump through the corresponding connecting pipelines. When the sealing bag is inflated, it can fill the gap between the cable and the upper mold and the lower mold to prevent leakage of molten plastic in the injection cavity.

[0016] The effect is that an external air pump inflates the sealing bag through a connecting pipeline, causing the sealing bag to expand. In the expanded state, the sealing bag can fill the gap between the cable and the upper and lower molds, preventing molten plastic from overflowing along the gap between the cable and the upper and lower molds during the injection molding process.

[0017] Preferably, it also includes a blanking mechanism, which includes a push rod and a fourth driving member. A blanking hole is opened on the lower mold, which is connected to the injection cavity and is located below the injection cavity. When the mold is opened, the fourth driving member can drive the push rod to extend upward through the blanking hole to eject the cable in the injection cavity.

[0018] The effect is that the fourth driving member pushes the push rod to move upward, so that the push rod lifts the cable upward from the bottom, thereby making the cable detachable from the lower mold, making it easier to remove the cable from the lower mold and improving the loading and unloading speed.

[0019] Preferably, protective plates are provided on both sides of the frame.

[0020] The effect is that the protective plate is used to isolate the staff and the injection molding machine, preventing the staff from putting their hands into the injection molding machine, which would cause safety hazards.

[0021] Preferably, a positioning component is further provided, the positioning component comprises a positioning groove and a positioning column, the positioning groove is arranged on the top surface of the lower mold, the positioning column is arranged on the bottom surface of the upper mold, and the positioning column can extend into the positioning groove.

[0022] The effect is that when the upper mold and the lower mold are closed, the positioning column gradually extends into the positioning groove, thereby ensuring that the upper mold and the lower mold are aligned, preventing the upper mold and the lower mold from deviating and causing the molded sleeve to be inconsistent with the designed shape.

[0023] Preferably, the mold closing system also includes a turntable, which is rotatably mounted on the frame, and the rotation axis of the turntable is in a vertical state. There are multiple lower molds, and the multiple lower molds are distributed on the turntable at intervals along the circumference of the turntable. A third driving member is provided in the frame, and the third driving member is used to drive the turntable to rotate so as to switch different lower molds to be located directly below the upper mold.

[0024] The effect is that multiple lower molds are set up. When one of the lower molds is closed with the upper mold and the injection molding operation is performed, the other lower molds can be used for loading and unloading operations of cables. When the injection molding operation is completed, it is possible to quickly switch to other lower molds and perform injection molding again to achieve continuous injection molding.

[0025] Preferably, the injection system comprises a hopper, a barrel and a nozzle, wherein the nozzle is arranged in the upper mold, the bottom end of the barrel is connected to the nozzle, and the hopper is connected to the top end of the barrel.

[0026] Preferably, the lifting mechanism comprises a second driving member and a lifting seat, the second driving member is arranged on the frame, the lifting seat is connected to the output end of the second driving member, and the upper mold is connected to the lifting seat.

[0027] By adopting the above technical solution, the beneficial effects of the present invention are:

[0028] According to the continuous injection molding machine of the present invention, the first driving member pushes the first adjusting rod to move, the first adjusting rod drives the adjusting gear to rotate, and the adjusting gear drives the second adjusting rod to move, so that the first adjusting rod and the second adjusting rod move toward each other. During the movement of the first adjusting rod and the second adjusting rod, the lever gradually approaches the cable and makes the cable bend in an S shape in the adjustment groove. Since the cable head and the side wall of the lower mold stop, the other end of the cable is gradually received in the lower mold, and the injection molding position of the cable away from one end of the cable head can be adjusted. The continuous injection molding machine of the present invention can realize automatic adjustment of the placement position of the cable, thereby improving the injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a continuous injection molding machine according to an embodiment of the present invention.

[0030] Figure 2 It is a schematic diagram of the local structure of a continuous injection molding machine according to an embodiment of the present invention.

[0031] Figure 3 Schematic diagram of the turntable driving according to an embodiment of the present invention.

[0032] Figure 4 Schematic diagram of the upper mold structure of an embodiment of the present invention.

[0033] Figure 5 Schematic diagram of the lower mold structure of an embodiment of the present invention.

[0034] Figure 6 It is a working state diagram of the adjusting device of the embodiment of the present invention moving the cable.

[0035] Figure 7 It is a schematic diagram of the structure of the adjustment mechanism of an embodiment of the present invention.

[0036] Figure 8 It is a schematic diagram of the internal structure of the lower mold according to an embodiment of the present invention.

[0037] Fig. 9 2 is a cross-sectional view of a lower mold according to an embodiment of the present invention.

[0038] Fig.10 It is another cross-sectional view of the lower mold according to an embodiment of the present invention.

[0039] Fig.11 Schematic diagram of the rotating shaft structure of an embodiment of the present invention.

[0040] Fig.12 It is a schematic structural diagram of a sealing bag and a connecting pipeline according to an embodiment of the present invention.

[0041] Fig.13 1 is a working state diagram of the unloading mechanism according to an embodiment of the present invention.

[0042] Fig.14 It is a schematic diagram of the cooperation between the push rod and the fourth driving member according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] 100, cable; 200, cable head;

[0045] 101, cabinet; 102, column; 103, support platform; 21, upper mold; 22, lower mold; 221, clamping groove; 222, driving groove; 223, feeding hole; 23, turntable; 231, through hole; 241, second driving member; 242, lifting seat; 25, third driving member; 26, driving gear; 31, hopper; 32, barrel; 33, nozzle; 41, first driving member; 42, first adjusting rod; 43, adjusting gear; 44, second adjusting rod; 45, lever; 46. ​​Push plate; 47. Adjusting groove; 51. Positioning groove; 52. Positioning column; 61. Upper clamping block; 62. Lower clamping block; 621. First clamping jaw; 622. Second clamping jaw; 63. Rotating shaft; 631. First shifting block; 632. Second shifting block; 64. Driving motor; 71. Sealing capsule; 72. Connecting pipeline; 81. Push rod; 82. Elastic member; 83. Fourth driving member; 84. Driving plate; 85. Driving rod; 9. Protective plate; 10. Accommodating lower groove; 11. Second injection molding groove. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0047] like Figures 1 to 14As shown, the continuous injection molding machine of the present invention comprises: a frame, a clamping system, an injection system, an adjusting mechanism, a clamping mechanism and a blanking mechanism. The clamping system, the injection system, the adjusting mechanism, the clamping mechanism and the blanking mechanism are installed on the frame. The clamping system is used to form an injection cavity with the same contour as the sheath at the injection molding position of the cable 100. The injection system is used to inject molten plastic into the injection molding cavity. When the molten plastic cools and solidifies, a sheath is formed. The clamping mechanism is used to clamp the cable 100 during the injection molding process to prevent the cable 100 from shaking. The blanking mechanism is used to demold the cable 100 from the clamping system after the injection molding of the cable 100 sheath is completed.

[0048] Specifically, Figure 1 and Figure 2 As shown, the rack is a vertical structure, which includes a cabinet 101, a column 102 and a support platform 103. The bottom end of the column 102 is fixedly connected to the top end of the cabinet 101, and the support platform 103 is fixedly connected to the top end of the column 102. The support platform 103 and the cabinet 101 are spaced apart above and below.

[0049] like Figures 2 to 5 As shown, the mold clamping system includes an upper mold 21, a lower mold 22, a turntable 23 and a lifting mechanism. The lifting mechanism is arranged on the support platform 103, and the lifting mechanism includes a second driving member 241 and a lifting seat 242. The second driving member 241 is a hydraulic cylinder, and the second driving member 241 is fixed on the support platform 103. The output end of the second driving member 241 vertically passes through the support platform 103 and is fixedly connected to the top of the lifting seat 242. The top of the upper mold 21 is fixedly connected to the bottom of the lifting seat 242. When the second driving member 241 drives the lifting seat 242 to move up and down, the upper mold 21 and the lifting seat 242 move up and down synchronously. An upper accommodating groove is provided on the bottom surface of the upper mold 21, and a lower accommodating groove 10 is provided on the top surface of the lower mold 22. The upper accommodating groove and the lower accommodating groove 10 have the same structure, and the cross-sections of the two are semicircular. When the upper mold 21 and the lower mold 22 are molded, the upper accommodating groove and the lower accommodating groove 10 can be assembled to form a accommodating groove with a circular cross-section. The bottom surface of the upper mold 21 is provided with a first injection groove, and the top surface of the lower mold 22 is provided with a second injection groove 11. When the upper mold 21 and the lower mold 22 are molded together, the first injection groove and the second injection groove 11 can be assembled to form an injection cavity, and the receiving groove is connected to the injection cavity and is coaxially distributed.

[0050] like Figure 2 and Figure 3As shown, the turntable 23 is rotatably matched on the frame, the rotation axis of the turntable 23 is in a vertical state, the turntable 23 is located below the lifting seat 242, and a third driving member 25 is provided in the frame. The third driving member 25 is a motor, and the third driving member 25 is fixedly connected in the frame, and a driving gear 26 is fixedly connected to its output end. A tooth groove is provided on the peripheral side of the turntable 23, and the driving gear 26 is meshed with the turntable 23. The third driving member 25 drives the turntable 23 to rotate through the driving gear 26. Two lower molds 22 are fixedly connected to the turntable 23, and the two lower molds 22 are symmetrically distributed about the center of the circle of the turntable 23. During the production process, one of the lower molds 22 on the turntable 23 cooperates with the upper mold 21 to perform injection molding, and the other lower mold 22 can perform assembly operations at the same time. When the injection molding operation is completed, the assembly operation is completed synchronously. At this time, the turntable 23 rotates, and the positions of the two lower molds 22 are exchanged, which can improve production efficiency.

[0051] like Figure 2 and Figure 3 As shown, the injection system includes a hopper 31, a barrel 32 and a nozzle 33. The nozzle 33 is located in the upper mold 21. The barrel 32 is supported on the lifting seat 242. The bottom end of the barrel 32 is connected to the nozzle 33. The hopper 31 is a funnel structure. The hopper 31 is located above the barrel 32. The bottom end of the hopper 31 is connected to the top end of the barrel 32. The nozzle 33 is connected to the first injection groove. The molten plastic in the hopper 31 can enter the barrel 32 and enter the injection cavity through the nozzle 33.

[0052] like Figures 5 to 7 As shown, the adjustment mechanism includes a first driving member 41, a first adjustment rod 42, an adjustment gear 43 and a second adjustment rod 44. An adjustment slot 47 is provided at the center of the lower mold 22, and the first adjustment rod 42 and the second adjustment rod 44 are respectively slidably fitted at the two ends of the adjustment slot 47, and the first adjustment rod 42 and the second adjustment rod 44 are symmetrically distributed about the midpoint of the adjustment slot 47. The adjustment gear 43 is rotatably provided at the center of the adjustment slot 47, and the adjustment gear 43 is located between the first adjustment rod 42 and the second adjustment rod 44, and the adjustment gear 43 is respectively engaged with the first adjustment rod 42 and the second adjustment rod 44. The first driving member 41 is a hydraulic cylinder, and the first driving member 41 is fixedly provided on the frame, and a push plate 46 is fixedly provided at the end of the first adjustment rod 42. When the turntable 23 rotates the lower mold 22 to just below the upper mold 21, the output end of the first driving member 41 can stop with the push plate 46. At this time, the telescopic rod of the first driving member 41 extends outward, which can push the push plate 46 and then push the first adjusting rod 42 to move. When the first adjusting rod 42 moves, it will drive the adjusting gear 43 to rotate, and the adjusting gear 43 will drive the second adjusting rod 44 to move, so that the first adjusting rod 42 and the second adjusting rod 44 move toward each other or away from each other.

[0053] like Figure 6As shown, the first adjusting rod 42 and the second adjusting rod 44 are both fixedly connected with a lever 45. During operation, the cable 100 is placed in the receiving lower groove 10 and the second injection groove 11, and one end of the cable head 200 is stopped against the side wall of the lower mold 22. When the turntable 23 rotates so that the lower mold 22 is located directly below the upper mold 21, the first driving member 41 is aligned with the first adjusting rod 42. At this time, the first driving member 41 can stop with the push plate 46, and the first driving member 41 pushes the first adjusting rod 42 to move. The first adjusting rod 42 drives the adjusting gear 43 to rotate, and the adjusting gear 43 drives the second adjusting rod 44 to move, so that the first adjusting rod 42 and the second adjusting rod 44 move toward each other. During the movement of the first adjusting rod 42 and the second adjusting rod 44, the lever 45 gradually approaches the cable 100, and makes the middle part of the cable 100 bend in an S shape in the adjustment groove 47. Since the cable head 200 stops with the side wall of the lower mold 22, the end of the cable 100 away from the cable head 200 is gradually retracted into the lower mold 22, so that the injection position of the end of the cable 100 away from the cable head 200 can be adjusted.

[0054] like Figure 4 and Figure 5 As shown, the positioning assembly includes positioning grooves 51 and positioning posts 52. The top surface of each lower mold 22 is provided with a plurality of positioning grooves 51. The positioning grooves 51 are cylindrical grooves. The positioning posts 52 are fixedly connected to the top surface of the upper mold 21. There are a plurality of positioning posts 52. The plurality of positioning posts 52 correspond to the positioning grooves 51 of the lower mold 22 one by one. The positioning posts 52 are cylindrical structures and can extend into the positioning grooves 51. When the upper mold 21 and the lower mold 22 are molded together, the positioning posts 52 gradually extend into the positioning grooves 51, thereby ensuring that the upper mold 21 and the lower mold 22 are aligned.

[0055] like Figure 4 , Figure 5 , Figures 8 to 11 As shown, the clamping mechanism includes an upper clamping assembly and a lower clamping assembly, the lower clamping assembly includes a lower clamping block 62 and a driving unit, the driving unit includes a driving motor 64, a rotating shaft 63 and a lower spring, and the upper clamping assembly includes an upper clamping block 61 and a driving unit, and the two driving units have the same structure. The upper clamping assembly is arranged in the upper mold 21, and the lower clamping assembly is arranged in the lower mold 22. The upper clamping assembly and the lower clamping assembly have the same structure and are symmetrically arranged up and down.

[0056] The lower mold 22 is provided with two groups of clamping grooves 221 on both sides of the adjustment groove 47, and each group of clamping grooves 221 includes two clamping grooves 221. The two clamping grooves 221 of the same group are respectively located on both sides of the corresponding second injection molding groove 11, and the clamping grooves 221 are connected to the receiving groove. A lower clamping block 62 is slidably fitted in each clamping groove 221. The lower clamping block 62 includes a first clamping jaw 621 and a second clamping jaw 622. The first clamping jaw 621 is provided with a first arc groove, and the second clamping jaw 622 is provided with a second arc groove. The first arc groove and the second arc groove are both used to clamp the cable 100. The diameter of the first arc groove is greater than the diameter of the second arc groove. The first clamping jaw 621 and the second clamping jaw 622 are elastically connected to the lower mold 22 through a lower spring.

[0057] like Fig.10 As shown, a driving groove 222 is provided in the lower mold 22, one end of the driving groove 222 is connected to the outside, and each clamping groove 221 is connected to the driving groove 222. The rotating shaft 63 is rotatably fitted in the driving groove 222, and the driving motor 64 is fixed on the side wall of the lower mold 22. The output end of the driving motor 64 is fixedly connected to the rotating shaft 63, and the driving motor 64 is used to drive the rotating shaft 63 to rotate. A plurality of first shifting blocks 631 and second shifting blocks 632 are fixedly arranged on the rotating shaft 63, and a first shifting block 631 and a second shifting block 632 are provided at the connection point between each clamping groove 221 and the driving groove 222, each first shifting block 631 corresponds to a first clamping claw 621, and each second shifting block 632 corresponds to a second clamping claw 622. The first shifting block 631 is a rectangular block, one end of the first shifting block 631 is fixedly connected to the rotating shaft 63, and the other end thereof is a curved surface structure, and the second shifting block 632 is a conical block, and the large diameter end of the conical block is fixedly connected to the rotating shaft 63.

[0058] When clamping and fixing the cable 100, the driving motor 64 drives the rotating shaft 63 to rotate, and the first shift block 631 first contacts with the first clamping jaw 621 and pushes the first clamping jaw 621 to move, so that the corresponding first clamping jaws 621 in the upper clamping block 61 and the lower clamping block 62 approach each other until the two stop against each other; then the rotating shaft 63 continues to be driven to rotate, and at this time the second shift block 632 contacts with the second clamping jaw 622 and pushes the second clamping jaw 622 to move, so that the corresponding second clamping jaws 622 in the upper clamping block 61 and the lower clamping block 62 approach each other until the two stop against each other. When the diameter of the cable 100 placed in the receiving groove is relatively thick, the cable 100 can be clamped between the first clamping jaws 621 in the upper clamping block 61 and the lower clamping block 62, and the upper clamping block 61 and the lower clamping block 62 can clamp the cable 100 through the first clamping jaws 621; when the diameter of the cable 100 placed in the receiving groove is relatively thin, the two first clamping jaws 621 approach each other until they stop against each other. At this time, the cable 100 is located in the circular hole formed by the two first arc grooves stopping against each other, and the arc surface end of the first shift block 631 stops against the first clamping jaw 621. When the rotating shaft 63 continues to rotate , the arc surface structure of the first shift block 631 slides relative to the first clamping jaw 621, during which the second shift block 632 gradually approaches the second clamping jaw 622 and stops with the second clamping jaw 622, and the second shift block 632 can push the second clamping jaw 622 to move, so that the second clamping jaws 622 in the upper clamping block 61 and the lower clamping block 62 approach each other, until the second clamping jaws 622 in the upper clamping block 61 and the lower clamping block 62 respectively stop with the top and bottom ends of the cable 100, and the upper clamping block 61 and the lower clamping block 62 can clamp the cable 100 through the second clamping jaw 622. The upper clamping block 61 and the lower clamping block 62 squeeze the cable 100 from the top and bottom at the same time, and during this process, the adjustment mechanism shifts the cable 100, and at this time, since both the left and right ends of the cable 100 are clamped by the clamping assembly, the cable 100 can be tightened, and when the upper clamping block 61 and the lower clamping block 62 completely clamp the cable 100, the cable 100 can be coaxially distributed with the receiving groove.

[0059] like Figure 4 , Figure 5 , Figures 8 to 10 , Fig.12As shown, a sealing bag 71 is fixedly arranged in the upper mold 21 and the lower mold 22, and the sealing bag 71 surrounds the upper clamp block 61 or the lower clamp block 62. When the sealing bag 71 is inflated, it can wrap the upper clamp block 61 or the lower clamp block 62. A connecting pipe 72 is arranged in the upper mold 21 and the lower mold 22, and the connecting pipe 72 is connected to the sealing bag 71. The end of the connecting pipe 72 extends out of the upper mold 21 or the lower mold 22 and is connected to an external air pump. Since the thickness of the cable 100 varies, the diameter of the accommodating groove needs to be larger than the diameter of the cable 100. When the cable 100 is placed in the accommodating groove, there is a gap between the cable 100 and the lower mold 22 and the upper mold 21. When the clamping mechanism clamps the cable 100, the connecting pipe 72 can be connected to the external air pump, and the external air pump inflates the sealing bag 71 to expand the sealing bag 71. The sealing bag 71 can fill the gap between the cable 100 and the upper mold 21 and the lower mold 22 to prevent the molten plastic in the injection cavity from overflowing through the gap between the cable 100 and the upper mold 21 and the lower mold 22 during the injection molding process. During the cooling process, a cooling medium can also be injected into the sealing bag 71 through the connecting pipe 72 to cool the molten plastic at both ends of the injection cavity. When the temperature of the molten plastic at both ends of the injection cavity is lower than that of the molten plastic in the middle area of ​​the injection cavity, the molten plastic in the middle area of ​​the injection cavity transfers heat to the molten plastic at both ends of the injection cavity. By injecting a cooling medium into the sealing bag 71, the cooling speed of the molten plastic can be increased, thereby reducing the cooling time of the molten plastic and improving production efficiency.

[0060] like Figure 3 , Figure 5 , Figure 8 , Fig. 9 , Fig.13 and Fig.14As shown, the unloading mechanism includes a push rod 81 and a fourth driving member 83. A plurality of unloading holes 223 are provided in the lower mold 22. The top ends of the unloading holes 223 are connected to the second injection molding groove 11. The unloading holes 223 penetrate the lower mold 22. A plurality of through holes 231 are provided on the turntable 23. Each through hole 231 is coaxially distributed with a unloading hole 223. A push rod 81 is provided in each unloading hole 223. The push rod 81 slides in the unloading hole 223 and is vertically distributed. The push rod 81 is elastically connected to the lower mold 22 through an elastic member 82. The elastic member 82 is a spring. The bottom end of the elastic member 82 is fixedly connected to the push rod 81. The top end of the elastic member 82 is fixedly connected to the lower mold 22. The top end of the push rod 81 can extend into the second injection molding groove 11. The bottom end of the push rod 81 extends into the through hole 231 on the turntable 23 and slides with the through hole 231 on the turntable 23. The fourth driving member 83 is fixedly disposed in the cabinet 101 below the turntable 23 . The fourth driving member 83 is a hydraulic cylinder. The output end of the fourth driving member 83 extends vertically upward. The output end is fixedly connected to a driving plate 84 . A plurality of driving rods 85 are disposed on the driving plate 84 . When the cable 100 in one of the lower molds 22 is injection molded, the turntable 23 is rotated to rotate the other lower mold 22 to just below the upper mold 21. At this time, the lower mold 22 with the cable 100 after injection molding is located just above the driving plate 84. Each driving rod 85 on the driving plate 84 corresponds to a push rod 81. The fourth driving member 83 drives the driving plate 84 to move upward, and the driving rod 85 moves upward synchronously with the driving plate 84. The driving rod 85 extends into the through hole 231 on the turntable 23 and pushes the push rod 81 to overcome the elastic force of the elastic member 82 and move upward. The elastic member 82 is compressed, so that the top end of the push rod 81 extends upward out of the lower mold 22 and pushes the cable 100 accommodated in the lower groove 10 out of the lower mold 22.

[0061] like Figure 1 As shown, a protective plate 9 is fixedly provided on the frame. There are two protective plates 9, which are respectively located on both sides of the frame. The protective plates 9 are used to isolate the staff and the injection molding machine to prevent the staff from putting their hands into the injection molding machine to cause safety hazards.

[0062] The implementation principle of the continuous injection molding machine of the embodiment of the present invention is as follows: the cable 100 is placed in the receiving lower groove 10 and the second injection groove 11, and one end of the cable head 200 is stopped against the side wall of the lower mold 22, the third driving member 25 is controlled to drive the driving gear 26 to rotate, the driving gear 26 drives the turntable 23 to rotate, and the lower mold 22 with the cable 100 placed is rotated to the bottom of the upper mold 21, the output end of the first driving member 41 gradually approaches the push plate 46 and stops against the push plate 46, the first driving member 41 pushes the first adjusting rod 42 to move, and the first adjusting rod 42 is moved. The section rod 42 drives the adjusting gear 43 to rotate, and the adjusting gear 43 drives the second adjusting rod 44 to move, so that the first adjusting rod 42 and the second adjusting rod 44 move toward each other. During the movement of the first adjusting rod 42 and the second adjusting rod 44, the lever 45 gradually approaches the cable 100 and makes the cable 100 bend in an S shape in the adjusting groove 47. Since the cable head 200 and the side wall of the lower mold 22 stop, the other end of the cable 100 is gradually received into the lower mold 22, so that the injection position of the cable 100 away from one end of the cable head 200 can be adjusted.

[0063] After the adjustment is completed, the second driving member 241 drives the lifting seat 242 to move downward, and the upper mold 21 and the lifting seat 242 move downward synchronously until the upper mold 21 and the lower mold 22 stop to achieve mold closing, and then the driving motor 64 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the first shift block 631 and the second shift block 632 to rotate, and the first shift block 631 first stops with the first clamping jaw 621 and pushes the first clamping jaw 621 to move, so that the first clamping jaws 621 in the upper clamping block 61 and the lower clamping block 62 are close to each other. When the diameter of the cable 100 placed in the accommodating groove is thin, the two first clamping jaws 621 approach each other until they stop each other. At this time, the cable 100 is located between the two first arc grooves. In the circular hole formed by the mutual abutment, the arc surface end of the first shift block 631 abuts against the first clamping jaw 621, and the rotating shaft 63 continues to rotate. The first shift block 631 slides relative to the first clamping jaw 621 along its arc surface structure. During this process, the second shift block 632 gradually approaches the second clamping jaw 622 and abuts against the second clamping jaw 622. The second shift block 632 can push the second clamping jaw 622 to move, so that the second clamping jaw 622 in the upper clamping block 61 and the lower clamping block 62 approach each other, until the second clamping jaw 622 in the upper clamping block 61 and the lower clamping block 62 respectively abut against the top and bottom ends of the cable 100, and the upper clamping block 61 and the lower clamping block 62 can clamp the cable 100 through the second clamping jaw 622. The upper clamp block 61 and the lower clamp block 62 squeeze the cable 100 from the top and bottom respectively to prevent the cable 100 from shaking. The upper clamp block 61 and the lower clamp block 62 squeeze the cable 100 together and make the cable 100 coaxially distributed with the receiving groove. Since the injection molding cavity and the receiving groove are coaxially distributed, it is ensured that the molten plastic in the injection molding cavity can be evenly distributed around the cable 100 during injection molding. Then the connecting pipe 72 is connected to the external air pump, and compressed air is introduced into the connecting pipe 72 to expand the sealing capsule 71. The sealing capsule 71 can fill the gap between the cable 100 and the upper mold 21 and the lower mold 22. Then, the molten plastic is poured into the hopper 31. The molten plastic enters the barrel 32 along the hopper 31 and flows into the injection molding cavity through the nozzle 33. The molten plastic fills the injection molding cavity. Then cooling begins. During the cooling process, cooling medium is injected into the sealing bag 71 through the connecting pipe 72, thereby increasing the cooling speed of the molten plastic, reducing the cooling time of the molten plastic, and further improving production efficiency.

[0064] After cooling is completed, the second driving member 241 drives the lifting seat 242 to move upward, the upper mold 21 and the lifting seat 242 move upward synchronously, the upper mold 21 is separated from the lower mold 22, and the third driving member 25 drives the turntable 23 to rotate through the driving gear 26, so that the other lower mold 22 with the cable 100 to be injection molded moves to below the upper mold 21, and the lower mold 22 with the injection-molded cable 100 moves to just above the unloading mechanism, and the fourth driving member 83 drives the driving plate 84 and the driving rod 85 to move upward, the driving rod 85 stops with the push rod 81, and pushes the push rod 81 to overcome the elastic force of the elastic member 82 and move upward, so that the push rod 81 extends upward from the bottom end of the lower groove 10, and lifts the injection-molded cable 100 upward, thereby separating it from the lower mold 22, and at the same time, the injection molding operation of another cable 100 is carried out synchronously to achieve continuous injection molding.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A continuous injection molding machine, comprising a frame, an injection system and a clamping system, wherein the injection system and the clamping system are mounted on the frame; The mold clamping system comprises an upper mold, a lower mold and a lifting mechanism, wherein the lower mold is arranged on the frame, and the lifting mechanism is installed on the frame, and the lifting mechanism is used to drive the upper mold to approach or move away from the lower mold to realize the mold clamping or mold opening of the upper mold and the lower mold, and an injection cavity is formed when the upper mold and the lower mold are clamped; the injection system is used to inject molten plastic into the injection cavity; It is characterized in that The gear train is configured to enable the gear train to move upwardly and downwardly, and the gear train is configured to move the first adjusting rod and the second adjusting rod downwardly and downwardly. The gear train is configured to enable the gear train to move upwardly and downwardly. The gear train is configured to enable the gear train to move upwardly and downwardly. The gear train is configured to enable the gear train to move upwardly and downwardly.

2. The continuous injection molding machine according to claim 1, characterized in that: It also includes a clamping mechanism, which includes an upper clamping assembly and a lower clamping assembly. The upper clamping assembly is arranged on the upper mold, and the lower clamping assembly is arranged on the lower mold. The upper clamping assembly and the lower clamping assembly have the same structure and are symmetrically arranged up and down. When the mold is closed, the upper clamping assembly and the lower clamping assembly can approach each other and clamp and fix the cable.

3. The continuous injection molding machine according to claim 2, characterized in that: The lower clamping assembly includes a lower clamping block and a driving unit, the driving unit is used to drive the lower clamping block to move toward the upper mold, the lower clamping block includes a first clamping jaw and a second clamping jaw, the first clamping jaw is provided with a first arc groove, the second clamping jaw is provided with a second arc groove, the first arc groove and the second arc groove are both used to clamp cables, the diameter of the first arc groove is greater than the diameter of the second arc groove, and the upper clamping assembly includes an upper clamping block and a driving unit for driving the upper clamping block.

4. The continuous injection molding machine according to claim 3, characterized in that: A sealing bag is provided in the upper mold and the lower mold. When the mold is closed, the sealing bag is wrapped around the upper clamp block and the lower clamp block. Connecting pipelines are provided in the upper mold and the lower mold. The sealing bag is connected to an external air pump through the corresponding connecting pipelines. When the sealing bag is inflated, it can fill the gap between the cable and the upper mold and the lower mold to prevent leakage of molten plastic in the injection cavity.

5. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: It also includes a feeding mechanism, which includes a push rod and a fourth driving member. A feeding hole is opened on the lower mold, which is connected to the injection cavity and is located below the injection cavity. When the mold is opened, the fourth driving member can drive the push rod to extend upward through the feeding hole to eject the cable in the injection cavity.

6. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: Protective plates are arranged on both sides of the frame.

7. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: A positioning component is also provided, which includes a positioning groove and a positioning column. The positioning groove is arranged on the top surface of the lower mold, and the positioning column is arranged on the bottom surface of the upper mold. The positioning column can extend into the positioning groove.

8. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: The mold closing system also includes a turntable, which is rotatably mounted on a frame, and the rotation axis of the turntable is in a vertical state. There are multiple lower molds, and the multiple lower molds are distributed on the turntable at intervals along the circumference of the turntable. A third driving member is provided in the frame, and the third driving member is used to drive the turntable to rotate so as to switch different lower molds to be located directly below the upper mold.

9. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: The injection system comprises a hopper, a barrel and a nozzle, wherein the nozzle is arranged in the upper mold, the bottom end of the barrel is communicated with the nozzle, and the hopper is communicated with the top end of the barrel.

10. The continuous injection molding machine according to any one of claims 1 to 4, characterized in that: The lifting mechanism comprises a second driving member and a lifting seat, wherein the second driving member is arranged on the frame, the lifting seat is connected to the output end of the second driving member, and the upper mold is connected to the lifting seat.

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