An automatic injection molding device and injection molding method for a railway signal box connecting wire end

Abstract

The invention provides an automatic injection molding device and an injection molding method for a terminal of a railway signal box connecting line, and relates to the technical field of workpiece injection molding, comprising: an injection molding device, wherein three rows of load-bearing buckles are fixedly arranged on the top of the injection molding device; two rows of through-control through-grooves are opened on the top of the injection molding device, and the through-control through-grooves are located in the middle of the intervals between the three rows of load-bearing buckles; an injection molding machine and a vacuum pump are fixedly arranged inside the injection molding device; six groups of lower injection molds are fixedly arranged on the top front side of the injection molding device; the invention is provided with a buckle mold device, which provides a function of automatically combining molds, aligns an upper injection mold with a lower injection mold, and then starts an electric cylinder E to lower a T-shaped block to close the upper injection mold and the lower injection mold, and a space for an injection molding terminal is formed by the gap between the lower injection mold, the upper injection mold and the rod-shaped mold, so that injection molding can be performed, and the rod-shaped mold can be automatically placed by a six-axis robot, thereby achieving a fully automatic combination effect and solving the problem that the existing injection molding device lacks the function of automatically combining molds.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece injection molding, and in particular to an automatic injection molding device and an injection molding method for a railway signal box connecting wire end. Background Art

[0002] The connecting wires used in railway signal boxes need to be insulated and protected by plastic sleeves before installation. At present, the injection molding of the connecting wire ends of boxes in my country's railway signal industry generally adopts manual feeding injection molding, which requires manual placement of a rod-shaped mold identical to the connecting wire end in an injection mold, and injection molding is performed in the mold to form a plastic end.

[0003] The injection molding devices currently used have the following disadvantages:

[0004] 1. It requires manual assembly of molds and demoulding, lacks a stable automatic mold assembly function, and is inconvenient to quickly assemble the mold into a whole;

[0005] 2. Lack of convenient and stable automatic positioning and alignment function of rod-shaped molds;

[0006] 3. It is inconvenient to ensure the removal of bubbles during injection molding, and the generation of bubbles will affect the insulation effect. Summary of the invention

[0007] In view of this, the present invention aims at the deficiencies existing in the above-mentioned prior art and provides an automatic injection molding device and an injection molding method for a railway signal box connecting wire end.

[0008] The present invention provides an automatic injection molding device and an injection molding method for a terminal of a railway signal box connecting line, specifically comprising: an automatic injection molding device for a terminal of a railway signal box connecting line, comprising: an injection molding device and a control console, wherein three rows of load-bearing buckles are fixedly arranged on the top of the injection molding device; two rows of through-control through-grooves are opened on the top of the injection molding device, and the through-control through-grooves are located in the middle of the intervals between the three rows of load-bearing buckles; an injection molding machine and a vacuum pump are fixedly arranged inside the injection molding device; six groups of lower injection molds are fixedly arranged on the front side of the top of the injection molding device, and centralized pipelines are arranged on the front sides of the six groups of lower injection molds to connect the injection molding machine and the vacuum pump, and an electromagnetic gate valve is also connected to the pipeline connection between the injection molding machine and the vacuum pump; a control beam is fixedly arranged inside the injection molding device; the bottoms of the through-control through-grooves are fixedly arranged A transmission frame is fixedly provided; an electric cylinder C is fixedly provided on the front side of the upper interior of the injection molding device; a mold clamping device is fixedly provided on the front side of the injection molding device; six groups of electric cylinders D are fixedly provided on the top of the mold clamping device, and the telescopic ends of the electric cylinders D are provided with upper mold frames, and electric cylinders E are fixedly provided on the top of the upper mold frames, and T-shaped blocks are fixedly provided on the telescopic ends of the electric cylinders E, and connecting rods are fixedly provided on the bottom of both sides of the T-shaped blocks, and an upper injection mold is fixedly provided on the bottom of the connecting rods through the upper mold frame; the bottom edge of the upper injection mold is a surrounding buckle structure, and the upper injection mold can be fitted and buckled on the outside of the lower injection mold; a six-axis robot, wherein a working disk is fixedly provided on the working end of the six-axis robot, and pneumatic clamps for grabbing workpieces are fixedly provided on both sides of the bottom of the working disk.

[0009] Optionally, the top rear side of the injection molding device extends upward, an electric cylinder A is fixedly provided on the rear side of the extension, and a push plate is fixedly provided on the telescopic end of the electric cylinder A.

[0010] Optionally, an electric cylinder B is fixedly provided on the top of the control beam, a connecting frame is fixedly provided on the top of the electric cylinder B, and three groups of control strips are fixedly provided on both sides and in the middle of the top of the connecting frame.

[0011] Optionally, two sets of rotating sleeves are rotatably arranged in the middle of the transmission frame, and hexagonal shafts are slidably arranged in the rotating sleeves; locking buckles for pressing workpieces are fixedly arranged on the tops of the hexagonal shafts; load-bearing wheels are fixedly arranged on the bottoms of the hexagonal shafts, and the main body of the load-bearing wheels is a U-shaped structure, and the load-bearing wheels slide in fits on both sides of the control strip; a control gear is fixedly arranged on the upper outside of the rotating sleeves.

[0012] Optionally, a connecting row is fixedly provided at the telescopic end of the electric cylinder C, and six groups of control racks are fixedly provided on the front side of the connecting row; sliding guide rows are fixedly provided on both sides of the bottom of the control through groove, and the control racks are slidably connected to the sliding guide rows.

[0013] Optionally, each of the control racks is meshed with a set of control gears, and when the electric cylinder C is extended, the control racks drive the control gears to rotate 90 degrees.

[0014] Optionally, six through slots are provided on the top front side of the mold clamping device for accommodating the upper mold frame, and side slide frames are fixedly arranged on both sides above the through slots; a connecting seat extending backward is provided at the lower front side of the upper mold frame, and two upper and lower rows of auxiliary pulleys are rotatably arranged on both sides of the connecting seat, and the auxiliary pulleys are fitted in the side slide frames.

[0015] Optionally, an injection molding method of an automatic injection molding device for a railway signal box connecting wire end includes the following steps:

[0016] 1) Material discharge: preset the program in the control console, use the six-axis robot to move the work plate to the top of the material plate where the rod-shaped mold is placed, and use the pneumatic gripper to grab the rod-shaped mold with the connecting end, and place it on the top of the injection mold, arrange it longitudinally, release the pneumatic gripper to place the rod-shaped mold, and place the front end of the rod-shaped mold in the injection mold;

[0017] 2) Positioning, start the electric cylinder C to drive the connecting rack and the control rack to move, the control rack drives the control gear to rotate 90 degrees, and at the same time, the rotating sleeve rotates 90 degrees to drive the hexagonal shaft to rotate, and move the locking buckle to the top of the rod-shaped mold, then retract the electric cylinder B to drive the connecting frame and the control bar to descend, the control bar drives the load-bearing wheel to descend, the hexagonal shaft to descend, and the locking buckle is set above the rod-shaped mold; start the electric cylinder A to move the push plate to level and align the six groups of rod-shaped molds;

[0018] 3) Clamp the mold, start the electric cylinder D to push the upper mold frame, align the upper injection mold with the lower injection mold, and then start the electric cylinder E to lower the T-shaped block to close the upper injection mold and the lower injection mold, and form a space for the injection end through the gap between the lower injection mold, the upper injection mold and the rod mold;

[0019] 4) Injection molding: open the electromagnetic gate valve and use the vacuum pump to extract the air in the injection molding space. Then use the injection molding machine to melt the plastic raw material and input it into the injection molding space to achieve bubble-free rapid molding. A heater is installed in the pipeline to prevent the plastic from solidifying. After molding, the excess plastic liquid is recovered; then the above steps are performed in reverse to demold.

[0020] The beneficial effects are as follows:

[0021] 1. The present invention is provided with a mold locking device, which provides the function of automatically combining molds. The upper injection mold is aligned with the lower injection mold, and then the electric cylinder E is started to lower the T-block to close the upper injection mold and the lower injection mold. The gap between the lower injection mold, the upper injection mold and the rod-shaped mold forms a space for the injection end, and injection molding can be performed. The rod-shaped mold can be automatically placed using a six-axis robot, thereby achieving a fully automatic combination effect.

[0022] 2. Set the locking buckle, which provides an automatic positioning function. By using the combination of electric cylinder C and electric cylinder B, the locking buckle can be moved to the top of the rod-shaped mold. The locking buckle is set above the rod-shaped mold, and then the electric cylinder A is started to move the push plate to level and align the six groups of rod-shaped molds, and subsequent injection molding can be carried out. The positioning is convenient and stable. Using two sets of drives can simultaneously realize the control of the lifting and rotation actions of each group of locking buckles.

[0023] 3. A vacuum pump can be set up to extract the air in the injection molding space, and then the plastic raw materials are melted by the injection molding machine and input into the injection molding space to achieve bubble-free rapid molding. A heater is set up in the pipeline to prevent the plastic from solidifying. The excess plastic liquid can be recovered after molding to save waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall layout structure schematic diagram of the embodiment of the present invention is shown;

[0025] Figure 2 A partial structural schematic diagram of an embodiment of the present invention is shown;

[0026] Figure 3 The embodiment of the present invention is shown Figure 2 Schematic diagram of the disassembled structure;

[0027] Figure 4 It shows a schematic diagram of the side tilt structure of the mold buckling device in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the assembly structure of the upper mold frame in an embodiment of the present invention is shown;

[0029] Figure 6 A schematic diagram of the side tilt structure of the injection molding device in an embodiment of the present invention is shown;

[0030] Figure 7 A schematic diagram of the structure of the locking buckle in the buckling state of an embodiment of the present invention is shown;

[0031] Figure 8 A schematic diagram of the structure of the locking buckle in the reset state of the embodiment of the present invention is shown;

[0032] Fig. 9 The embodiment of the present invention is shown Figure 7 Schematic diagram of the side tilt structure.

[0033] Reference numerals list

[0034] 1. Injection molding device; 101. Loading buckle; 102. Electric cylinder A; 103. Push plate; 104. Lower injection mold; 105. Through-control groove; 106. Sliding guide; 2. Injection molding machine; 3. Vacuum pump; 301. Solenoid gate valve; 4. Control beam; 401. Electric cylinder B; 402. Connecting frame; 403. Control strip; 5. Transmission frame; 501. Rotating sleeve; 502. Hexagonal shaft; 503. Locking buckle; 504 , load-bearing wheel; 505, control gear; 6, electric cylinder C; 601, connecting row; 602, control rack; 7, mold clamping device; 701, side slide; 702, electric cylinder D; 703, upper mold frame; 704, auxiliary pulley; 705, electric cylinder E; 706, T-block; 707, connecting rod; 708, upper injection mold; 8, six-axis robot; 801, working disk; 802, pneumatic gripper; 9, control console. DETAILED DESCRIPTION

[0035] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0036] Example 1: Please refer to the attached drawings in the specification. Figures 1 to 9 As shown:

[0037] The present invention proposes an automatic injection molding device and an injection molding method for a railway signal box connecting line terminal, comprising: an automatic injection molding device for a railway signal box connecting line terminal comprising: an injection molding device 1 and a control console 9, wherein three rows of load-bearing buckles 101 are fixedly arranged on the top of the injection molding device 1; two rows of through-control slots 105 are opened on the top of the injection molding device 1, and the through-control slots 105 are located in the middle of the intervals between the three rows of load-bearing buckles 101; an injection molding machine 2 and a vacuum pump 3 are fixedly arranged inside the injection molding device 1; six groups of lower injection molds 104 are fixedly arranged on the front side of the top of the injection molding device 1, and centralized pipelines are arranged on the front sides of the six groups of lower injection molds 104 to connect the injection molding machine 2 and the vacuum pump 3, and an electromagnetic gate valve 301 is also connected to the pipeline connection between the injection molding machine 2 and the vacuum pump 3; a control beam 4 is fixedly arranged inside the injection molding device 1; a transmission frame 5 is fixedly arranged at the bottom of the through-control slots 105; the injection molding device 1 is fixedly provided with an electric cylinder C6 on the upper front side of the interior; a clamping mold device 7 is fixedly provided on the front side of the injection molding device 1; six groups of electric cylinders D702 are fixedly provided on the top of the clamping mold device 7, and the telescopic ends of the electric cylinders D702 are provided with upper mold frames 703, and the tops of the upper mold frames 703 are fixedly provided with electric cylinders E705, and the telescopic ends of the electric cylinders E705 are fixedly provided with T-shaped blocks 706, and the bottoms of both sides of the T-shaped blocks 706 are fixedly provided with connecting rods 707, and the bottoms of the connecting rods 707 pass through the upper mold frame 703 and are fixedly provided with upper injection molds 708; the bottom edge of the upper injection mold 708 is a buckle structure, and the upper injection mold 708 can be fitted and buckled on the outside of the lower injection mold 104; a six-axis robot 8, a working disk 801 is fixedly provided on the working end of the six-axis robot 8, and pneumatic clamps 802 for grabbing workpieces are fixedly provided on both sides of the bottom of the working disk 801.

[0038] The top rear side of the injection molding device 1 extends upward, and an electric cylinder A102 is fixedly provided on the rear side of the extension, and a push plate 103 is fixedly provided on the telescopic end of the electric cylinder A102.

[0039] An electric cylinder B401 is fixedly arranged on the top of the control beam 4 , a connecting frame 402 is fixedly arranged on the top of the electric cylinder B401 , and three groups of control strips 403 are fixedly arranged on both sides and the middle of the top of the connecting frame 402 .

[0040] Among them, two sets of rotating sleeves 501 are rotatably arranged in the middle of the transmission frame 5, and hexagonal shafts 502 are slidably arranged in the rotating sleeves 501; locking buckles 503 for pressing workpieces are fixedly arranged on the tops of the hexagonal shafts 502; supporting wheels 504 are fixedly arranged on the bottoms of the hexagonal shafts 502, and the main body of the supporting wheels 504 is a U-shaped structure, and the supporting wheels 504 slide in accordance with the two sides of the control strip 403; a control gear 505 is fixedly arranged on the upper outside of the rotating sleeve 501.

[0041] Among them, a connecting row 601 is fixedly provided at the telescopic end of the electric cylinder C6, and six groups of control racks 602 are fixedly provided on the front side of the connecting row 601; sliding guide rows 106 are fixedly provided on both sides of the bottom of the through-control slot 105, and the control racks 602 are slidably connected to the sliding guide rows 106.

[0042] The control racks 602 are meshed with a set of control gears 505 , and when the electric cylinder C6 is extended, the control racks 602 drive the control gears 505 to rotate 90 degrees.

[0043] Among them, six through grooves are opened on the top front side of the mold clamping device 7 for accommodating the upper mold frame 703, and side slides 701 are fixedly arranged on both sides above the through grooves; a connecting seat extending backward is arranged at the lower front side of the upper mold frame 703, and two rows of upper and lower auxiliary pulleys 704 are rotatably arranged on both sides of the connecting seat, and the auxiliary pulleys 704 are fitted in the side slides 701.

[0044] like Figure 1-9 As shown, a rod-shaped mold produced in batches is used to form a casting space through the rod-shaped mold, the upper injection mold 708 and the lower injection mold 104; a material tray for placing the rod-shaped mold is prefabricated;

[0045] By presetting a program in the console 9, the six-axis robot 8 is used to move the working plate 801 to the top of the material plate where the rod-shaped mold is placed, and the pneumatic clamp 802 is used to grab the rod-shaped mold with the connecting end, and then place it on the top of the lower injection mold 104 to arrange it longitudinally, and then the pneumatic clamp 802 is released to place the rod-shaped mold, and the front end of the rod-shaped mold is placed in the lower injection mold 104;

[0046] The rod-shaped mold is positioned by using a fixed structure, and the electric cylinder C6 is started to drive the connecting rack 601 and the control rack 602 to move. The control rack 602 drives the control gear 505 to rotate 90 degrees. At the same time, the rotating sleeve 501 rotates 90 degrees to drive the hexagonal shaft 502 to rotate, and the locking buckle 503 is moved to the top of the rod-shaped mold. Then, the electric cylinder B401 is retracted to drive the connecting frame 402 and the control bar 403 to descend. The control bar 403 drives the load-bearing wheel 504 to descend, and the hexagonal shaft 502 is lowered. The locking buckle 503 is buckled above the rod-shaped mold;

[0047] Push the rod-shaped molds flat, start the electric cylinder A102 to move the push plate 103 to level and align the six groups of rod-shaped molds;

[0048] Embodiment 2: Based on Embodiment 1, when sealing the mold, start the electric cylinder D702 to push the upper mold frame 703, align the upper injection mold 708 with the lower injection mold 104, and then start the electric cylinder E705 to lower the T-block 706 to seal the upper injection mold 708 and the lower injection mold 104; the bottom edge of the upper injection mold 708 is set to a buckled structure that is convenient for docking so that they can fit together to form an integral mold.

[0049] Embodiment 3: Based on Embodiment 1, bubbles can be removed during injection molding. The electromagnetic gate valve 301 is opened to extract the air in the injection molding space using the vacuum pump 3, and then the plastic raw material is melted by the injection molding machine 2 and input into the injection molding space to achieve bubble-free rapid molding.

[0050] A heater is installed in the pipeline to prevent the plastic from solidifying and to recover the excess plastic liquid after molding;

[0051] After the cost is increased, a circulating water channel can be set inside the upper injection mold 708 and the lower injection mold 104 to speed up the efficiency of injection solidification.

[0052] Specific usage and function of this embodiment: In the present invention, a program is preset in the console 9, and the six-axis robot 8 is used to move the working plate 801 to the top of the material plate where the rod-shaped mold is placed, and the pneumatic clamp 802 is used to grab the rod-shaped mold with the connecting end, and then place it on the top of the lower injection mold 104, arrange it longitudinally, and release the pneumatic clamp 802 to place the rod-shaped mold, and the front end of the rod-shaped mold is placed in the lower injection mold 104;

[0053] The electric cylinder C6 is started to drive the connecting rack 601 and the control rack 602 to move, and the control rack 602 drives the control gear 505 to rotate 90 degrees. At the same time, the rotating sleeve 501 rotates 90 degrees to drive the hexagonal shaft 502 to rotate, and the locking buckle 503 is moved to the top of the rod-shaped mold. Then the electric cylinder B401 is retracted to drive the connecting frame 402 and the control bar 403 to descend. The control bar 403 drives the bearing wheel 504 to descend, and the hexagonal shaft 502 is lowered, and the locking buckle 503 is buckled above the rod-shaped mold; the electric cylinder A102 is started to move the push plate 103 to level and align the six groups of rod-shaped molds;

[0054] Start the electric cylinder D702 to push the upper mold frame 703 to align the upper injection mold 708 with the lower injection mold 104, then start the electric cylinder E705 to lower the T-block 706 to close the upper injection mold 708 and the lower injection mold 104, and form a space for the injection end through the gap between the lower injection mold 104, the upper injection mold 708 and the rod mold;

[0055] Open the electromagnetic gate valve 301 and use the vacuum pump 3 to extract the air in the injection molding space, then use the injection molding machine 2 to melt the plastic raw material and input it into the injection molding space to achieve bubble-free rapid molding. A heater is set in the pipeline to prevent the plastic from solidifying, and the excess plastic liquid is recovered after molding; then the above steps are performed in reverse to demold.

Claims

1. An automatic injection molding device and method for the terminal of a railway signal box connecting wire, characterized in that: An automatic injection molding device for connecting wire ends of a railway signal box comprises: an injection molding device (1) and a control console (9); three rows of load-bearing buckles (101) are fixedly arranged on the top of the injection molding device (1); two rows of through-control slots (105) are opened on the top of the injection molding device (1), and the through-control slots (105) are located in the middle of the intervals between the three rows of load-bearing buckles (101); an injection molding machine (2) and a vacuum pump (3) are fixedly arranged inside the injection molding device (1); six groups of lower injection molds (104) are fixedly arranged on the front side of the top of the injection molding device (1); centralized pipelines are arranged on the front sides of the six groups of lower injection molds (104) to connect the injection molding machine (2) and the vacuum pump (3); and an electromagnetic gate valve (301) is also connected at the pipeline connection between the injection molding machine (2) and the vacuum pump (3); a control beam (4) is fixedly arranged inside the injection molding device (1); the bottom of the through-control slots (105) A transmission frame (5) is fixedly arranged on each of the two parts; an electric cylinder C (6) is fixedly arranged on the front side of the upper interior of the injection molding device (1); a mold-locking device (7) is fixedly arranged on the front side of the injection molding device (1); six groups of electric cylinders D (702) are fixedly arranged on the top of the mold-locking device (7); the telescopic ends of the electric cylinders D (702) are each provided with an upper mold frame (703); the top of the upper mold frame (703) is fixedly arranged with an electric cylinder E (705); the telescopic ends of the electric cylinders E (705) are each provided with a T-shaped block (706); connecting rods (707) are fixedly arranged on the bottom of both sides of the T-shaped block (706); an upper injection mold (708) is fixedly arranged on the bottom of the connecting rods (707) passing through the upper mold frame (703); the bottom edge of the upper injection mold (708) is a surrounding buckle structure, and the upper injection mold (708) can be fitted and buckled on the outside of the lower injection mold (104); A six-axis robot (8), wherein a working disc (801) is fixedly arranged at the working end of the six-axis robot (8), and pneumatic grippers (802) for grasping a workpiece are fixedly arranged on both sides of the bottom of the working disc (801).

2. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 1, characterized in that: The rear side of the top of the injection molding device (1) extends upward, an electric cylinder A (102) is fixedly arranged on the rear side of the extension, and a push plate (103) is fixedly arranged on the telescopic end of the electric cylinder A (102).

3. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 1, characterized in that: An electric cylinder B (401) is fixedly arranged on the top of the control beam (4), a connecting frame (402) is fixedly arranged on the top of the electric cylinder B (401), and three groups of control strips (403) are fixedly arranged on both sides and in the middle of the top of the connecting frame (402).

4. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 1, characterized in that: Two sets of rotating sleeves (501) are rotatably arranged in the middle of the transmission frame (5), and a hexagonal shaft (502) is slidably arranged in the rotating sleeve (501); a locking buckle (503) for pressing a workpiece is fixedly arranged on the top of the hexagonal shaft (502); a bearing wheel (504) is fixedly arranged on the bottom of the hexagonal shaft (502), and the main body of the bearing wheel (504) is a U-shaped structure, and the bearing wheel (504) fits and slides on both sides of the control strip (403); and a control gear (505) is fixedly arranged on the upper part of the outer portion of the rotating sleeve (501).

5. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 4, characterized in that: A connecting row (601) is fixedly provided at the telescopic end of the electric cylinder C (6), and six groups of control racks (602) are fixedly provided on the front side of the connecting row (601); sliding guide rows (106) are fixedly provided on both sides of the bottom of the control through slot (105), and the control racks (602) are slidably connected to the sliding guide rows (106).

6. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 5, characterized in that: The control racks (602) are each meshed with a set of control gears (505). When the electric cylinder C (6) is extended, the control racks (602) drive the control gears (505) to rotate 90 degrees.

7. The automatic injection molding device for the connecting wire end of a railway signal box as claimed in claim 1, characterized in that: The top front side of the mold fastening device (7) is provided with six through slots for accommodating the upper mold frame (703), and side slide frames (701) are fixedly arranged on both sides above the through slots; a connecting seat extending backward is arranged at the lower front side of the upper mold frame (703), and two rows of upper and lower auxiliary pulleys (704) are rotatably arranged on both sides of the connecting seat, and the auxiliary pulleys (704) are fitted in the side slide frames (701).

8. The method for automatically injecting a terminal of a railway signal box connecting wire according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Material discharge: a program is preset in the control console (9), and a six-axis robot (8) is used to move the working plate (801) to the top of the material plate where the rod-shaped mold is placed. The pneumatic gripper (802) is used to grab the rod-shaped mold with the connecting end, and then the rod-shaped mold is placed on the top of the lower injection mold (104) to arrange the rod-shaped mold longitudinally. The pneumatic gripper (802) is released to place the rod-shaped mold, and the front end of the rod-shaped mold is placed in the lower injection mold (104); 2) Positioning, start the electric cylinder C (6) to drive the connecting rack (601) and the control rack (602) to move, the control rack (602) drives the control gear (505) to rotate 90 degrees, and at the same time, the rotating sleeve (501) rotates 90 degrees to drive the hexagonal shaft (502) to rotate, and move the locking buckle (503) to the top of the rod-shaped mold, then retract the electric cylinder B (401) to drive the connecting frame (402) and the control bar (403) to descend, the control bar (403) drives the load-bearing wheel (504) to descend, the hexagonal shaft (502) to descend, and the locking buckle (503) is buckled above the rod-shaped mold; start the electric cylinder A (102) to move the push plate (103) to level and align the six groups of rod-shaped molds; 3) Clamp the mold, start the electric cylinder D (702) to push the upper mold frame (703), align the upper injection mold (708) with the lower injection mold (104), and then start the electric cylinder E (705) to lower the T-shaped block (706) to close the upper injection mold (708) and the lower injection mold (104), and form a space for the injection end through the gap between the lower injection mold (104), the upper injection mold (708) and the rod-shaped mold; 4) Injection molding: open the electromagnetic gate valve (301) and use the vacuum pump (3) to extract the air in the injection molding space, then use the injection molding machine (2) to melt the plastic raw material and input it into the injection molding space to achieve bubble-free rapid molding. A heater is set in the pipeline to prevent the plastic from solidifying. After molding, the excess plastic liquid is recovered; then the above steps are reversed to demould.

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