CN113211713B

CN113211713B - Quick injection molding device for plastic shell of track circuit compensation capacitor

Info

Publication number: CN113211713B
Application number: CN202110527067.0A
Authority: CN
Inventors: 孙福川; 李晓辉; 张开拓; 赵月钦; 孙博
Original assignee: Hebei Jisheng Track Technology Co ltd
Current assignee: Hebei Jisheng Track Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-05-24
Anticipated expiration: 2041-05-14
Also published as: CN113211713A

Abstract

The invention relates to the technical field of injection molding devices, in particular to a rapid injection molding device for a plastic shell of a track circuit compensation capacitor, which comprises an extruding machine and a base, wherein the extruding machine is arranged on the base, the base is connected with an adjusting frame through a rotating seat, an adjusting mechanism is arranged between the adjusting frame and the base, the adjusting frame is communicated with the extruding machine through a steel wire high-temperature resistant hose, a servo motor is arranged on the adjusting frame, a fixed inner ring is connected in the adjusting frame, a material passing hole is formed in the fixed inner ring, an outer ring frame is connected on the fixed inner ring, the servo motor is meshed with the outer ring frame, a plurality of injection molding grooves are formed in the outer ring frame, feed inlets are formed in the plurality of injection molding grooves, a fixed mold is connected in the plurality of injection molding grooves, a movable module is arranged in the plurality of injection molding grooves, a positioning assembly is arranged in the outer ring frame, a housing structure is arranged on the adjusting frame, and the injection molding and the demolding can be carried out simultaneously, the production efficiency is higher, and the operation is more safe, and the design is comparatively humanized, and the practicality is better.

Description

Quick injection molding device for plastic shell of track circuit compensation capacitor

Technical Field

The invention relates to the technical field of injection molding devices, in particular to a rapid injection molding device for a plastic shell of a track circuit compensation capacitor.

Background

As is known, the track circuit compensation capacitor is mainly composed of an internal capacitor and an external plastic shell, which are important components of an uninsulated track and are mainly installed between two rails and two sleepers, and one rail is generally installed in one hundred meters, so that the demand is very large, and the plastic shell of the track circuit compensation capacitor is mainly formed by injection molding through an injection molding machine.

The existing injection molding machine generally comprises a framework, components such as an extruding machine and a mold, the extruding machine and the mold are installed in the framework, the discharge end of the extruding machine is communicated with a filling port of the mold, when the injection molding machine is used, the extruding machine is firstly started, the opening and closing states of the mold are adjusted to be combined, then raw materials are fed into the extruding machine, the extruding machine is controlled to heat the raw materials, finally, the raw materials are extruded into the mold, after the raw materials are injected into the mold and pressure maintaining is completed, the injection of the extruding machine into the mold is cut off, the mold is opened, the track circuit compensation capacitor plastic shell after injection molding is completed is subjected to demolding, and the track circuit compensation capacitor plastic shell is taken out.

However, the injection molding machine sequentially carries out the demolding and the injection molding process in the process of producing the plastic shell of the track circuit compensation capacitor, the injection molding production cannot be carried out during the demolding, the demolding and the discharging cannot be carried out in the injection molding production process, the production efficiency is easily influenced, meanwhile, the temperature of the raw material extruded into the mold by the injection molding machine is higher, a worker is easily scalded if the material is discharged immediately after the injection molding is finished, a large amount of time is wasted if the material is kept stand and cooled, the position of the mold installed in the framework is not easy to carry out height adjustment according to the height of the worker, the worker with large height deviation operates difficultly, and the humanization is poor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the rapid injection molding device for the plastic shell of the track circuit compensation capacitor, which has the advantages that the mutual influence between injection molding and demolding is small, the injection molding and the demolding can be simultaneously carried out, the production efficiency is high, meanwhile, the plastic shell of the track circuit compensation capacitor after injection molding can be subjected to pressure maintaining cooling on the premise of not influencing the production efficiency, the temperature of the plastic shell of the track circuit compensation capacitor during stripping is low, the operation of workers is safer, the height of a mobile module can be adjusted according to the heights of the workers, the design is humanized, the adjustment operation is convenient and fast, and the practicability is good.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a rapid injection molding device for a plastic shell of a track circuit compensation capacitor comprises an injection molding machine and a base, wherein the injection molding machine is arranged at the top end of the base, a rotating seat is fixedly connected onto the base, an adjusting frame is rotatably connected onto the rotating seat, an adjusting mechanism is arranged between the adjusting frame and the base, an injection molding hole is formed in the adjusting frame, the injection molding hole is communicated with a steel wire high-temperature-resistant hose, the steel wire high-temperature-resistant hose is communicated with the injection molding machine, a servo motor is arranged on the adjusting frame, a fixed inner ring is fixedly connected into the adjusting frame, a material passing hole communicated with the injection molding hole is formed in the fixed inner ring, an outer ring frame is rotatably connected onto the fixed inner ring, the output end of the servo motor is meshed with the outer ring frame, a plurality of injection molding grooves are formed in the outer ring frame, feed inlets are formed in the plurality of injection molding grooves, and fixed molds are fixedly connected into the plurality of injection molding grooves, all be provided with in a plurality of grooves of moulding plastics and remove the module, install a plurality of locating component that are used for removing the module and fix in the outer ring frame, install the housing structure on the alignment jig.

Preferably, the movable mould group is including removing the mould, fixedly connected with reposition of redundant personnel guide board in the removal mould, the last three through-holes of having seted up of reposition of redundant personnel guide board, the triplet has inner chamber mould post through thread bush threaded connection, inner chamber mould post, fixed mould and removal mould cooperation form the plastic housing body cavity, and sliding connection has the round head board in the removal mould, two springs of fixedly connected with between round head board and the removal mould, round head board and removal mould cooperation form the plastic housing lid body cavity, plastic housing body cavity and plastic housing lid body cavity all through three through-holes with the feed inlet intercommunication.

Furthermore, the positioning assembly comprises a traction rod, two positioning blocks and two sliding columns, the traction rod and the two positioning blocks are in sliding fit in the outer ring frame, the two sliding columns are fixedly connected in the outer ring frame, sliding holes are formed in the two positioning blocks, the two sliding columns are respectively in sliding connection in the two sliding holes, an annular groove is formed in one end, away from the moving die, of the positioning block, an elastic spring is fixedly connected in the annular groove, the elastic spring is fixedly connected with the outer ring frame, the two positioning blocks are connected with the traction rod through traction ropes, and two positioning grooves matched with the positioning blocks are formed in the moving die.

Still further, adjustment mechanism includes two spliced poles and two rotating stands, and the equal fixed connection of two spliced poles is in on the alignment jig, two the rotating stand all rotates to be connected on the base, all rotates on two spliced poles and is connected with the connecting piece, it is connected with adjusting screw, two to rotate on the connecting piece adjusting screw respectively with two rotating stands threaded connection, two adjusting screw's right-hand member all is connected with the band pulley through the drive block, two connect through synchronous belt drive between the band pulley.

On the basis of the scheme, a plurality of driving holes are circumferentially formed in the driving block, the front end and the rear end of the base are provided with storage tanks and taking and placing tanks, the two taking and placing tanks are respectively communicated with the two storage tanks, and driving rods matched with the driving holes are arranged in the storage tanks.

On the basis of the scheme, the cover shell structure comprises a circular cover shell, the circular cover shell is fixedly connected with the adjusting frame, the circular cover shell is connected with the rotating seat through a connecting shaft, and a first taking and placing opening used for moving a mold to take and place and a first passing opening used for allowing a steel wire high-temperature-resistant hose to pass through are formed in the circular cover shell.

On the basis of the scheme, a visible sheet metal door is installed in the taking and placing opening, and an operating handle is installed on the visible sheet metal door.

On the basis of the scheme, the round head plate is fixedly connected with two round head blocks, the round head blocks are connected in the movable die in a sliding mode, and the round head blocks are fixedly connected with the springs.

Further on the basis of the scheme, a second through opening matched with the synchronous belt is formed in the base, and two grooves are formed in the movable mold.

As a further scheme of the scheme, a multi-fold sheet metal protection plate for protecting the servo motor is arranged on the adjusting frame.

(III) advantageous effects

Compared with the prior art, the invention provides a rapid injection molding device for a plastic shell of a track circuit compensation capacitor, which has the following beneficial effects:

1. this track circuit compensating capacitor plastic casing is with device of moulding plastics fast, through the design of a plurality of fixed moulds and a plurality of removal module, make a plurality of fixed moulds respectively with a plurality of removal module cooperation a plurality of plastics casing cavitys and a plurality of plastics casing cap cavitys that form can be in proper order mould plastics and the drawing of patterns in proper order, it moulds plastics and the influence each other between the drawing of patterns is less, mould plastics and the drawing of patterns can go on simultaneously, production efficiency is higher.

2. This track circuit compensation capacitor plastic casing is with device of moulding plastics fast, through the connection of fixed inner ring and outer ring frame, can make between a plurality of plastic casing coelom and the distance arrangement between a plurality of plastic casing coelom, give between the plastic casing coelom of moulding plastics and the plastic casing coelom of drawing of patterns and form refrigerated distance and space between the plastic casing coelom of moulding plastics and the plastic casing coelom of drawing of patterns, track circuit compensation capacitor plastic casing temperature during the stripping is lower, workman's operation is safer, and it is less to moulding plastics and drawing of patterns influence among the cooling process.

3. This track circuit compensating capacitor plastic casing is with device of moulding plastics fast, through the alignment jig with rotate the seat be connected, make the alignment jig can adjust for the angle of base to the height that makes the removal module can be adjusted according to workman's height, makes workman's drawing of patterns operation more laborsaving, and the design is comparatively humanized, and through adjustment mechanism's design, it is comparatively convenient laborsaving to make the adjustment operation of alignment jig for the angle of base.

Drawings

FIG. 1 is a partially cut-away perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;

FIG. 4 is an enlarged partial view of FIG. 1 at C;

FIG. 5 is a schematic perspective view of the present invention;

FIG. 6 is a schematic view of a partially sectioned perspective structure of the inner and outer fixed ring frames and the fixed mold according to the present invention;

FIG. 7 is an enlarged partial perspective view taken at D of FIG. 6 in accordance with the present invention;

FIG. 8 is a schematic view of the three-dimensional structure of the inner and outer fixed ring frames and the fixed mold according to the present invention;

FIG. 9 is a schematic exploded perspective view of the movable mold assembly and the stationary mold assembly of the present invention;

fig. 10 is a perspective view of the entire rear side view of the present invention.

In the figure: 1. a plastic extruding machine; 2. a base; 3. a rotating seat; 4. an adjusting bracket; 5. injection molding holes; 6. a steel wire high-temperature-resistant hose; 7. a servo motor; 8. fixing the inner ring; 9. a material passing hole; 10. an outer ring frame; 11. a feed inlet; 12. fixing the mold; 13. moving the mold; 14. a diversion guide plate; 15. three through holes; 16. an inner cavity mold column; 17. a plastic housing cavity; 18. a round head plate; 19. a spring; 20. a cavity of the plastic shell cover; 21. a draw bar; 22. positioning blocks; 23. a sliding post; 24. an elastic spring; 25. a hauling rope; 26. connecting columns; 27. a connecting member; 28. a rotating frame; 29. adjusting the screw rod; 30. a drive block; 31. a pulley; 32. a synchronous belt; 33. a drive aperture; 34. a storage tank; 35. a taking and placing groove; 36. a drive rod; 37. a circular housing; 38. a connecting shaft; 39. a visible sheet metal door; 40. an operating handle; 41. a round head block; 43. digging grooves; 44. multifolding panel beating guard plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-10, a rapid injection molding device for plastic housings of track circuit compensation capacitors comprises an extruding machine 1 and a base 2, wherein the extruding machine 1 is installed at the top end of the base 2, a rotating seat 3 is fixedly connected to the base 2, and an adjusting frame 4 is rotatably connected to the rotating seat 3, so that the angle of the adjusting frame 4 relative to the base 2 can be adjusted, thereby the height of a mobile module can be adjusted according to the height of a worker, the demolding operation of the worker is more labor-saving, the design is humanized, an adjusting mechanism is installed between the adjusting frame 4 and the base 2, the adjusting mechanism comprises two connecting columns 26 and two rotating frames 28, the two connecting columns 26 are fixedly connected to the adjusting frame 4, the two rotating frames 28 are rotatably connected to the base 2, the two connecting columns 26 are rotatably connected to a connecting piece 27, and the connecting piece 27 is rotatably connected to an adjusting screw 29, two adjusting screw 29 respectively with two rotating turret 28 threaded connection, two adjusting screw 29's right-hand member all is connected with band pulley 31 through drive block 30, connect through hold-in range 32 transmission between two band pulleys 31, make the regulation operation of alignment jig 4 for the angle of base 2 comparatively convenient laborsaving, set up on the base 2 with hold-in range 32 assorted through mouthful two, make hold-in range 32 can pass through, a plurality of drive holes 33 have been seted up to circumference on the drive block 30, storage tank 34 and put groove 35 have all been seted up to base 2's front end and rear end, two are put groove 35 and are linked together with two storage tanks 34 respectively, be provided with in the storage tank 34 with drive hole 33 assorted actuating lever 36, be convenient for to the drive of drive block 30, the operation is comparatively laborsaving, the practicality is better.

It should be further noted that an injection molding hole 5 is formed in the adjusting frame 4, the injection molding hole 5 is communicated with a steel wire high temperature resistant hose 6, the steel wire high temperature resistant hose 6 is communicated with the plastic extruding machine 1, a servo motor 7 is installed on the adjusting frame 4, a multi-fold sheet metal protection plate 44 for protecting the servo motor 7 is installed on the adjusting frame 4, the steel wire high temperature resistant hose 6 is prevented from colliding with the servo motor 7, the use safety of the servo motor 7 is improved, a fixed inner ring 8 is fixedly connected in the adjusting frame 4, a material passing hole 9 communicated with the injection molding hole 5 is formed in the fixed inner ring 8, an outer ring frame 10 is rotatably connected on the fixed inner ring 8, the plastic housing cavities 17 and the plastic housing cover cavities 20 can be arranged at a distance, a cooling distance and a cooling space are formed between the plastic housing cavity 17 and the plastic housing cavity 17 during injection molding and the plastic housing cavity 20 during injection molding and the plastic housing cover cavity 20 during injection molding, the plastic shell of the track circuit compensation capacitor is lower in temperature during stripping, the operation of workers is safer, and the influence on injection molding and demolding is smaller in the cooling process, the output end of the servo motor 7 is meshed with the outer ring frame 10, a plurality of injection molding grooves are formed in the outer ring frame 10, feed inlets 11 are formed in the plurality of injection molding grooves, fixed molds 12 are fixedly connected in the plurality of injection molding grooves, moving modules are arranged in the plurality of injection molding grooves, each moving module comprises a moving mold 13, two groove digging 43 are formed in the moving mold 13, the moving mold 13 can be taken out from the injection molding grooves through the groove digging 43, so that the demolding operation is conveniently completed, a shunt guide plate 14 is fixedly connected in the moving mold 13, three through holes 15 are formed in the shunt guide plate 14, the three through holes 15 are connected with an inner cavity mold column 16 through thread sleeves and threads, the inner cavity mold column 16, the fixed molds 12 and the moving mold 13 are matched to form a plastic shell cavity 17, sliding connection has round head board 18 in moving die 13, two springs 19 of fixedly connected with between round head board 18 and the moving die 13, two round head pieces 41 of fixedly connected with on the round head board 18, round head piece 41 sliding connection is in moving die 13, round head piece 41 and spring 19 fixed connection, round head board 18 forms plastics cap body chamber 20 with the moving die 13 cooperation, plastics cap body chamber 17 and plastics cap body chamber 20 all communicate with feed inlet 11 through three-hole 15, make a plurality of fixed die 12 respectively with a plurality of plastics cap body chambers 17 and a plurality of plastics cap body chambers 20 that the cooperation of a plurality of removal modules formed can be in proper order moulded plastics and the drawing of patterns in proper order, it moulds plastics and influences each other between the drawing of patterns less, mould plastics and the drawing of patterns can go on simultaneously, production efficiency is higher.

It should be further explained that a plurality of positioning assemblies for fixing the movable module are installed in the outer ring frame 10, each positioning assembly includes a drawbar 21, two positioning blocks 22 and two sliding columns 23, the drawbar 21 and the two positioning blocks 22 are both slidably fitted in the outer ring frame 10, the two sliding columns 23 are both fixedly connected in the outer ring frame 10, the two positioning blocks 22 are both provided with sliding holes, the two sliding columns 23 are respectively slidably connected in the two sliding holes, one end of the positioning block 22 away from the movable mold 13 is provided with an annular groove, an elastic spring 24 is fixedly connected in the annular groove, the elastic spring 24 is fixedly connected with the outer ring frame 10, the two positioning blocks 22 are both connected with the drawbar 21 through a hauling rope 25, the movable mold 13 is provided with two positioning grooves matched with the positioning blocks 22, the movable mold 13 is positioned in the injection molding groove by matching with the positioning blocks 22, and the adjusting frame 4 is provided with a housing structure, the housing structure includes circular housing 37, circular housing 37 and 4 fixed connection of alignment jig, circular housing 37 passes through connecting axle 38 and is connected with rotation seat 3, offer on the circular housing 37 and be used for removing getting of mould 13 and put the mouth and be used for the steel wire high temperature resistant hose 6 to pass through mouthful one, the improvement is to removing the module, the protection of fixed inner ring 8 and outer loop back frame 10, can avoid the workman to scald simultaneously, it is comparatively safe and practical, install visual panel metal door 39 in getting the mouth, can observe circular housing 37 is inside, install the operation on visual panel metal door 39 and 40, can rotate visual panel metal door 39 and open 40 through the operation.

The plastic extruding machine 1 and the servo motor 7 are conventional devices which are purchased from the market and are known by persons skilled in the art, the models can be customized or selected according to actual requirements, the plastic extruding machine 1 and the servo motor 7 are used only in the patent, the structure and the functions of the plastic extruding machine are not improved, the setting mode, the installation mode and the electric connection mode are set, the persons skilled in the art can debug the plastic extruding machine according to the requirements of the use specifications, the description of the plastic extruding machine 1 and the servo motor 7 is omitted, the control switch matched with the plastic extruding machine 1 and the servo motor 7 is arranged, the installation position of the control switch is selected according to the actual use requirements, and the workers can conveniently perform operation control.

In summary, the operating principle and the operating process of the rapid injection molding device for the plastic shell of the track circuit compensation capacitor are that, when in use, the rapid injection molding device for the plastic shell of the track circuit compensation capacitor is firstly installed at a place to be used, a worker inserts a hand into the pick-and-place groove 35 to take out the driving rod 36 positioned in the storage groove 34, inserts the driving rod 36 into the driving hole 33 on any one driving block 30 of the two driving blocks 30 and rotates the driving block 30, the driving block 30 rotates to realize the synchronous rotation of the two adjusting screw rods 29 through the synchronous belt 32, the adjusting screw rods 29 drive the connecting piece 27 to move relative to the rotating frame 28 in the moving process relative to the rotating frame 28, the connecting piece 27 moves to drive the adjusting frame 4 to rotate relative to the rotating base 3 through the connecting column 26, thereby realizing the adjustment of the angle between the adjusting frame 4 and the base 2, according to the height of the worker, the adjustment of the operation height suitable for the height of a worker is completed by changing the angle between the adjusting frame 4 and the base 2.

Further, after the adjustment is completed, the plastic extruding machine 1 is started, a raw material hopper is installed on the plastic extruding machine 1, raw materials are fed into the plastic extruding machine 1 through the raw material hopper, the raw materials are extruded into the steel wire high-temperature resistant hose 6 after being processed by the plastic extruding machine 1, the raw materials guided by the steel wire high-temperature resistant hose 6 sequentially pass through the plastic holes, the material passing holes 9 and the material feeding holes 11 communicated with the material passing holes 9 in the plurality of material feeding holes 11 and respectively enter the plastic shell cavity 17 and the plastic shell cover cavity 20 through the guide of the three through holes 15 from the material feeding holes 11, so that the injection molding of the plastic shell of the track circuit compensation capacitor is realized, after the injection molding is completed, the servo motor 7 drives the outer ring frame 10 to rotate relative to the fixed inner ring 8, the plastic shell cavity 17 which has completed the injection molding in the plurality of plastic shell cavities 17 and the plastic shell cover cavity 20 which has completed the injection molding in the plurality of plastic shell cover cavities 20 are rotated step by step, so that the plastic extruding machine 1 performs the injection molding on the next plastic shell cavity 17 and the next plastic shell cover 20, after the injection-molded plastic shell body cavity 17 and the injection-molded plastic shell cover body cavity 20 rotate to the position of the taking-placing opening, the visible sheet metal door 39 is opened through the operating handle 40, the draw bar 21 is pulled to enable the positioning block 22 to move to overcome the elastic force of the elastic spring 24 and exit from the positioning groove, the positioning of the movable mold 13 in the injection-molded groove fails, the movable mold 13 is taken out from the injection-molded groove by using fingers to pull the scratching groove 43, the movable mold 13 is separated from the fixed mold 12 in the taking-out process of the movable mold 13, the round head block 41 moves away from the movable mold 13 under the action of the spring 19, the demolding of the plastic shell of the track circuit compensation capacitor in the plastic shell body cavity 17 and the plastic shell cover body cavity 20 is realized, after the demolding is finished, a worker pulls the draw bar 21 again to insert the movable mold into the injection-molded groove, the visible sheet metal door 39 is closed, the servo motor 7 works to realize the stepping rotation of the outer ring frame 10, and after the rotation of the outer ring frame 10 is finished, and opening the visible sheet metal door 39 again to continue the demolding operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a track circuit compensating capacitor is quick injection molding device for plastic housing, includes extruding machine (1), its characterized in that: the plastic extruding machine is characterized by further comprising a base (2), the plastic extruding machine (1) is installed on the top end of the base (2), a rotating seat (3) is fixedly connected onto the base (2), an adjusting frame (4) is connected onto the rotating seat (3) in a rotating mode, an adjusting mechanism is installed between the adjusting frame (4) and the base (2), the adjusting mechanism comprises two connecting columns (26) and two rotating frames (28), the two connecting columns (26) are fixedly connected onto the adjusting frame (4), the two rotating frames (28) are connected onto the base (2) in a rotating mode, connecting pieces (27) are connected onto the two connecting columns (26) in a rotating mode, adjusting screw rods (29) are connected onto the connecting pieces (27) in a rotating mode, the two adjusting screw rods (29) are respectively in threaded connection with the two rotating frames (28), and belt wheels (31) are connected onto the right ends of the two adjusting screw rods (29) through driving blocks (30), a plurality of driving holes (33) are circumferentially formed in the driving block (30), the front end and the rear end of the base (2) are respectively provided with a storage groove (34) and a taking and placing groove (35), the two taking and placing grooves (35) are respectively communicated with the two storage grooves (34), a driving rod (36) matched with the driving holes (33) is arranged in the storage groove (34), the two belt pulleys (31) are in transmission connection through a synchronous belt (32), an injection molding hole (5) is formed in the adjusting frame (4), the injection molding hole (5) is communicated with a steel wire high-temperature-resistant hose (6), the steel wire high-temperature-resistant hose (6) is communicated with the plastic extruding machine (1), a servo motor (7) is installed on the adjusting frame (4), a fixed inner ring (8) is fixedly connected with the adjusting frame (4), and a material passing hole (9) communicated with the injection molding hole (5) is formed in the fixed inner ring (8), an outer ring frame (10) is rotatably connected to the fixed inner ring (8), the output end of the servo motor (7) is meshed with the outer ring frame (10), a plurality of injection molding grooves are formed in the outer ring frame (10), a feed inlet (11) is formed in each injection molding groove, a fixed mold (12) is fixedly connected to each injection molding groove, a movable module is arranged in each injection molding groove and comprises a movable mold (13), a diversion guide plate (14) is fixedly connected to the inner portion of the movable mold (13), three through holes (15) are formed in the diversion guide plate (14), the three through holes (15) are in threaded connection with inner cavity mold columns (16) through thread sleeves, the inner cavity mold columns (16), the fixed mold (12) and the movable mold (13) are matched to form a plastic shell cavity (17), and circular head plates (18) are slidably connected to the movable mold (13), the plastic die comprises an outer ring frame (10), a round head plate (18) and a movable die (13), wherein two springs (19) are fixedly connected between the round head plate (18) and the movable die (13), two round head blocks (41) are fixedly connected to the round head plate (18), the round head blocks (41) are slidably connected into the movable die (13), the round head plate (18) is fixedly connected with the springs (19), the round head plate (18) is matched with the movable die (13) to form a plastic housing cover body cavity (20), the plastic housing body cavity (17) and the plastic housing cover body cavity (20) are communicated with a feeding hole (11) through three through holes (15), a plurality of positioning assemblies for fixing a movable die set are installed in the outer ring frame (10), each positioning assembly comprises a traction rod (21), two positioning blocks (22) and two sliding columns (23), the traction rod (21) and the two positioning blocks (22) are slidably matched in the outer ring frame (10), the two sliding columns (23) are fixedly connected into the outer ring frame (10), sliding holes are formed in the two positioning blocks (22), the two sliding columns (23) are connected into the two sliding holes in a sliding mode respectively, an annular groove is formed in one end, far away from the moving die (13), of each positioning block (22), an elastic spring (24) is fixedly connected into the annular groove, the elastic spring (24) is fixedly connected with the outer ring frame (10), the two positioning blocks (22) are connected with the traction rod (21) through traction ropes (25), two positioning grooves matched with the positioning blocks (22) are formed in the moving die (13), and a housing structure is installed on the adjusting frame (4).

2. The rapid injection molding apparatus for plastic housings of track circuit compensation capacitors as claimed in claim 1, wherein: the cover structure comprises a circular cover (37), the circular cover (37) is fixedly connected with the adjusting frame (4), the circular cover (37) is connected with the rotating seat (3) through a connecting shaft (38), and a first access opening for moving a mold (13) to take and place and a first access opening for passing a steel wire high-temperature-resistant hose (6) are formed in the circular cover (37).

3. The rapid injection molding apparatus for plastic housings of track circuit compensation capacitors as claimed in claim 2, wherein: a visible sheet metal door (39) is installed in the taking and placing opening, and an operating handle (40) is installed on the visible sheet metal door (39).

4. A rapid injection molding apparatus for a plastic housing of a track circuit compensation capacitor as claimed in claim 3, wherein: the base (2) is provided with a second through opening matched with the synchronous belt (32), and the movable mold (13) is provided with two grooves (43).

5. The rapid injection molding apparatus for plastic housings of track circuit compensation capacitors as claimed in claim 4, wherein: a multi-fold metal plate protection plate (44) used for protecting the servo motor (7) is installed on the adjusting frame (4).