CN217553020U

CN217553020U - Anti-sticking tee pipe fitting injection mould of loosing core

Info

Publication number: CN217553020U
Application number: CN202221479497.6U
Authority: CN
Inventors: 蔡成云
Original assignee: Huaya Industrial Plastic Taicang Co ltd
Current assignee: Huaya Industrial Plastic Taicang Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-10-11
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a core pulling injection mold for anti-sticking tee pipe fitting, include: the device comprises a movable die, a fixed die, a cavity, a side core rod slide block, a top core rod slide block, an airtight piston and a stepped ejection rod, wherein the fixed die is arranged at the top of the movable die, and the cavity is arranged between the fixed die and the movable die; side core rod sliding blocks are arranged on two sides of the fixed die and extend into the cavity, airtight pistons are arranged in the side core rod sliding blocks, core rod ejecting sliding blocks are arranged on the surfaces, adjacent to the side core rod sliding blocks, of the fixed die and extend into the cavity; a step ejector rod is arranged on the movable die and extends into the cavity; by actively adjusting the air content in the mold, the air marks on the surface of the part are reduced during injection, the mold and the part can be ventilated and separated during mold opening, the internal air pressure is improved, and the integrity of the part and the high efficiency and low energy consumption of the mold opening are ensured.

Description

Anti-sticking tee pipe fitting injection mould of loosing core

Technical Field

The utility model belongs to the injection mold field, in particular to anti sticking three-way pipe fitting injection mould of loosing core.

Background

The injection mold is important equipment for realizing an injection molding process of plastics, is widely applied to various parts, particularly production and preparation of complex structures, and occupies an important position in human life and production. The tee joint is used as a part with various surface structures, an injection molding process is needed, however, in the production process, the complex surface structures cause frequent die sticking, cracking and deformation of finished products are caused, and the qualified rate is very low, so that the injection die is innovated and improved in the above problems.

The existing injection mould mainly has the following problems:

1. most of the existing injection molds have the problem of mold sticking, and a finished product is stuck on the mold and is not easy to take out when the mold is opened, so that the finished product is cracked and deformed finally, and the percent of pass is low.

2. Most of the existing injection molds have the problem of overlarge mold opening force demand, and because the interior of the mold is in a negative pressure environment after injection is finished and tensile force generated by mold sticking is added, great mold opening force is needed, energy consumption is not only large, and overlarge mold opening force can easily damage inner finished products in the mold opening moment.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome not enough above, the utility model aims at providing an anti sticking mould tee bend pipe fitting injection mould of loosing core through air content in the active adjustment mould, has both reduced part surface air trace when the injection, can ventilate separation mould and part when the die sinking again to improve inside atmospheric pressure, guarantee the complete and high-efficient, the low energy consumption of die sinking of part.

The technical scheme is as follows: in order to realize the above-mentioned purpose, the utility model provides an anti mould tee bend pipe fitting injection mould of loosing core, include: the air-tight piston type air-tight ejector comprises a movable mould, a fixed mould, a cavity, a side core rod slide block, an ejector core rod slide block, an air-tight piston and a stepped ejector rod, wherein the fixed mould is arranged at the top of the movable mould, and the cavity is arranged between the fixed mould and the movable mould; side core rod sliding blocks are arranged on two sides of the fixed die and extend into the cavity, airtight pistons are arranged in the side core rod sliding blocks, core rod ejecting sliding blocks are arranged on the surfaces, adjacent to the side core rod sliding blocks, of the fixed die and extend into the cavity; the movable die is provided with a step ejector rod, and the step ejector rod extends into the cavity.

The utility model discloses in the setting of injection mould through the interior air content of active adjustment mould, both reduced part surface air trace when the injection, can ventilate separation mould and part when the die sinking again to improve inside atmospheric pressure, guarantee the high efficiency of the complete and die sinking of part, low energy consumption.

The utility model discloses in side core pole slider include abaculus, spout, slider, first core bar and drive actuating cylinder, be provided with the abaculus on the cover half, the abaculus is inlayed fixedly with the cover half, be provided with the spout on the abaculus, be provided with the slider in the spout, slider and spout sliding contact, slider one end is provided with first core bar, first core pole extends to in the die cavity, the slider other end is provided with and drives actuating cylinder, it sets up on the cover half to drive actuating cylinder.

The utility model discloses in drive actuating cylinder linkage.

The utility model discloses in the setting of side core rod slider through abaculus installation core bar, and the split machined surface does not need BTA, inclined hole processing and curved surface processing, has guaranteed the portably of mould preparation, installation.

The utility model discloses in the setting of side core rod slider adopts the cylinder drive, and convenient and fast promotes not in place, asynchronous problem when also having avoided manual operation.

The airtight piston in the utility model comprises a piston cavity, a piston, a connecting rod, a sealing plug and an air guide channel, wherein the end of the slider, which is far away from the cavity, is provided with the piston cavity, the piston is arranged in the piston cavity, and the piston is in sliding contact with the piston cavity; a connecting rod is arranged on the piston, and a sealing plug is arranged at one end of the connecting rod, which is far away from the piston; an air guide channel is arranged in the core rod, the air guide channel penetrates through the first core rod, a sealing plug is arranged in the air guide channel, and the sealing plug is in sliding contact with the air guide channel.

The utility model discloses in airtight piston's setting adopts pneumatics, and same power avoids the too much and asynchronous problem of system of pencil that hybrid brought.

The utility model discloses in top core rod slider on be provided with the second core bar, second core bar one end is the taper shape, first core rod tip is provided with the groove of stepping down, the second core bar is mutually supported with first core bar.

The utility model discloses in the setting of second core bar makes each core bar mutually support, when constituting the die cavity face, can cover air guide channel, avoids the injection fluid to flow into air guide channel.

The ladder ejector rod comprises an ejector plate, a first ejector rod, a trip, a connecting ejector rod, a connecting plate and a second ejector rod, wherein the ejector plate is arranged on the movable die, the first ejector rod is arranged on the ejector plate, and the first ejector rod extends into the cavity; the middle section of the first ejector rod is provided with a release, a connecting ejector rod is arranged on the release and extends to the fixed die, a connecting plate is arranged in the fixed die, one end of the connecting plate is connected with the connecting ejector rod, the other end of the connecting plate is provided with a second ejector rod, and the second ejector rod extends into the cavity.

The utility model discloses in the setting of ladder knockout pin, through the connecting rod cooperation, it is ejecting to have realized the secondary of mould, makes the mould can realize two directions in a die sinking action and totally twice ejecting action, and the die sinking is convenient, and the energy consumption is low.

The tripping device comprises a tripping plate, a first rod groove, a tripping groove, an adjusting trip and a connecting rod groove, wherein the tripping plate is arranged in the movable die, the first rod groove is formed in one end of the tripping plate and is matched with the first ejector rod, the connecting rod groove is formed in the other end of the tripping plate, and the connecting rod groove is matched with the connecting ejector rod; a tripping groove is formed between the first rod groove and the connecting rod groove, an adjusting tripping is arranged in the tripping groove, the adjusting tripping contacts the first ejector rod, and the adjusting tripping contacts the connecting ejector rod; the sectional area of the top of the first ejector rod is smaller than that of the bottom of the first ejector rod, and the sectional area of the top of the connecting ejector rod is smaller than that of the bottom of the connecting ejector rod.

The utility model discloses in connecting plate one end be provided with the spring, spring one end oppression cover half, the spring other end oppresses the connecting plate.

The utility model discloses in the setting of spring guarantees that the connecting plate does not receive the effort influence outside the connection ejector pin, guarantees that the drawing of patterns is stable, avoids second ejector pin to influence the part shaping.

The utility model discloses in the movable mould on be provided with the nozzle, nozzle output and die cavity cooperation.

The utility model discloses in the setting of nozzle sprays washing liquid or protection oil through the nozzle, protects the mould, makes things convenient for the part separation, and its adopts the structural style who runs through the mould, makes the more convenient mould die cavity that reachs of fluid, has solved traditional artifical processing or has used inconvenient, incomplete problem when the gadget is handled.

In the utility model, a stepping groove is arranged on one side of the fixed die, a brush roller is arranged in the stepping groove, the brush roller comprises a hinged rod, a shaft sleeve, a first brush, a deflecting bevel gear set, a second brush and a driving motor, the hinged rod is hinged on the fixed die, the driving motor is arranged in the hinged rod, the output end of the driving motor is provided with the first brush, the shaft sleeve is arranged on the hinged rod, and the first brush penetrates out of the shaft sleeve; the middle section of the first brush is provided with a turning bevel gear set, the turning bevel gear set is connected with a second brush, and the turning bevel gear set is connected with the shaft sleeve through a bearing; the first brush and the second brush are perpendicular to each other.

The utility model discloses in the setting that the brush was rolled can help fluid evenly to paint, also can get rid of unnecessary fluid.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has:

1. the utility model discloses in an anti mould tee bend pipe fitting injection mould of loosing core, through the air content in the active adjustment mould, both reduced part surface gas trace when the injection, separation mould and part of can ventilating again when the die sinking to improve inside atmospheric pressure, guarantee the complete and high-efficient, the low energy consumption of die sinking of part.

2. The utility model discloses in an anti sticking mould tee bend pipe fitting injection mould of loosing core, through the connecting rod cooperation, realized that the secondary of mould is ejecting, make the mould can realize two directions in a die sinking action and totally twice ejecting action, the die sinking is convenient, the energy consumption is low.

3. The utility model discloses in an anti mould tee bend pipe fitting injection mould of loosing core spray washing liquid or protection oil through the nozzle, the protection mould makes things convenient for the part separation, its adopts the structural style who runs through the mould, makes the more convenient mould die cavity that reachs of fluid, has solved inconvenient, incomplete problem when traditional manual handling perhaps uses gadget to handle.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic top view of the fixed mold of the present invention;

FIG. 3 is a schematic structural view of the side core bar slide block and the top core bar slide block of the present invention;

FIG. 4 is a schematic view of the structure of the airtight piston of the present invention;

FIG. 5 is a schematic view of the stepped ejector rod of the present invention;

fig. 6 is a schematic structural view of the trip of the present invention;

FIG. 7 is a schematic view of the brush roller of the present invention;

in the figure: the device comprises a movable mold-1, a fixed mold-2, a cavity-3, a side core rod slide block-4, an insert-41, a chute-42, a slide block-43, a first core rod-44, a driving cylinder-45, a top core rod slide block-5, a second core rod-51, an airtight piston-6, a piston cavity-61, a piston-62, a connecting rod-63, a sealing plug-64, an air guide channel-65, a step ejection rod-7, an ejection plate-71, a first ejection rod-72, a trip-73, a trip plate-731, a first rod groove-732, a trip groove-733, an adjustment trip-734, a connecting rod groove-735, a connecting rod-74, a connecting plate-75, a second ejection rod-76, a spring-77, a spray opening-8, a brush roll-9, a hinged rod-91, a shaft sleeve-92, a first brush-93, a direction-changing bevel gear set-94, a second brush-95 and a driving motor-96.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Example 1

An anti-sticking tee fitting core-pulling injection mold as shown in fig. 1-7 comprises: the device comprises a movable die 1, a fixed die 2, a cavity 3, a side core rod slide block 4, a core rod push block 5, an airtight piston 6 and a step ejector rod 7, wherein the fixed die 2 is arranged at the top of the movable die 1, and the cavity 3 is arranged between the fixed die 2 and the movable die 1; side core rod sliding blocks 4 are arranged on two sides of the fixed die 2, the side core rod sliding blocks 4 extend into the die cavity 3, airtight pistons 6 are arranged in the side core rod sliding blocks 4, core rod ejecting sliding blocks 5 are arranged on the surfaces, adjacent to the side core rod sliding blocks 4, of the fixed die 2, and the core rod ejecting sliding blocks 5 extend into the die cavity 3; the movable die 1 is provided with a step ejector rod 7, and the step ejector rod 7 extends into the die cavity 3.

The side core rod slider 4 in this embodiment includes an insert 41, a sliding groove 42, a slider 43, a first core rod 44 and a driving cylinder 45, the fixed mold 2 is provided with the insert 41, the insert 41 is embedded and fixed with the fixed mold 2, the insert 41 is provided with the sliding groove 42, the sliding groove 42 is provided with the slider 43, the slider 43 is in sliding contact with the sliding groove 42, one end of the slider 43 is provided with the first core rod 44, the first core rod 44 extends into the cavity 3, the other end of the slider 43 is provided with the driving cylinder 45, and the driving cylinder 45 is arranged on the fixed mold 2.

The airtight piston 6 in the embodiment comprises a piston cavity 61, a piston 62, a connecting rod 63, a sealing plug 64 and an air guide channel 65, wherein the piston cavity 61 is arranged at one end of the sliding block 43 away from the cavity 3, the piston 62 is arranged in the piston cavity 61, and the piston 62 is in sliding contact with the piston cavity 61; a connecting rod 63 is arranged on the piston 62, and a sealing plug 64 is arranged at one end of the connecting rod 63, which is far away from the piston 62; an air guide channel 65 is arranged in the core rod 44, the air guide channel 65 penetrates through the first core rod 44, a sealing plug 64 is arranged in the air guide channel 65, and the sealing plug 64 is in sliding contact with the air guide channel 65.

In this embodiment, the core rod ejecting slider 5 is provided with a second core rod 51, one end of the second core rod 51 is conical, the end of the first core rod 51 is provided with a relief groove, and the second core rod 51 is matched with the first core rod 44.

The step ejector rod 7 in this embodiment includes an ejector plate 71, a first ejector rod 72, a release 73, a connecting ejector rod 74, a connecting plate 75, and a second ejector rod 76, the ejector plate 71 is disposed on the movable die 1, the first ejector rod 72 is disposed on the ejector plate 71, and the first ejector rod 72 extends into the cavity 3; the middle section of the first ejection rod 72 is provided with a release 73, the release 73 is provided with a connecting ejector rod 74, the connecting ejector rod 74 extends to the fixed die 2, a connecting plate 75 is arranged in the fixed die 2, one end of the connecting plate 75 is connected with the connecting ejector rod 74, the other end of the connecting plate 75 is provided with a second ejection rod 76, and the second ejection rod 76 extends into the cavity 3.

The release 73 in this embodiment includes a release plate 731, a first rod groove 732, a release groove 733, an adjustment release 734 and a connecting rod groove 735, the release plate 731 is disposed in the movable die 1, one end of the release plate 731 is provided with the first rod groove 732, the first rod groove 732 is matched with the first ejector rod 72, the other end of the release plate 731 is provided with the connecting rod groove 735, and the connecting rod groove 735 is matched with the connecting ejector rod 74; a trip groove 733 is arranged between the first rod groove 732 and the connecting rod groove 735, an adjusting trip 734 is arranged in the trip groove 733, the adjusting trip 734 contacts the first ejector rod 72, and the adjusting trip 734 contacts the connecting ejector rod 74; the sectional area of the top of the first ejection rod 72 is smaller than that of the bottom of the first ejection rod 72, and the sectional area of the top of the connecting ejector rod 74 is smaller than that of the bottom of the connecting ejector rod 74.

One end of the connecting plate 75 in this embodiment is provided with a spring 77, one end of the spring 77 presses the fixed mold 2, and the other end of the spring 77 presses the connecting plate 75.

In this embodiment the movable mould 1 on be provided with

nozzle

8, 8 output of nozzle and the cooperation of die cavity 3.

In the embodiment, a receding groove is formed in one side of the fixed die 2, a brush roller 9 is arranged in the receding groove, the brush roller 9 comprises a hinge rod 91, a shaft sleeve 92, a first brush 93, a direction-changing helical gear set 94, a second brush 95 and a driving motor 96, the hinge rod 91 is hinged to the fixed die 2, the driving motor 96 is arranged in the hinge rod 91, the first brush 93 is arranged at the output end of the driving motor 96, the shaft sleeve 92 is arranged on the outer side of the hinge rod 91, and the first brush 93 penetrates out of the shaft sleeve 92; a direction-changing bevel gear set 94 is arranged at the middle section of the first brush 93, a second brush 95 is connected with the direction-changing bevel gear set 94, and the direction-changing bevel gear set 94 is connected with the shaft sleeve 92 through a bearing; the first brush 93 and the second brush 95 are perpendicular to each other.

Example 2

A mold-sticking-resistant tee core-pulling injection mold as shown in fig. 1-3, comprising: the device comprises a movable die 1, a fixed die 2, a cavity 3, a side core rod slide block 4, a core rod push block 5, an airtight piston 6 and a step ejector rod 7, wherein the fixed die 2 is arranged at the top of the movable die 1, and the cavity 3 is arranged between the fixed die 2 and the movable die 1; side core rod sliding blocks 4 are arranged on two sides of the fixed die 2, the side core rod sliding blocks 4 extend into the die cavity 3, airtight pistons 6 are arranged in the side core rod sliding blocks 4, core rod ejecting sliding blocks 5 are arranged on the surfaces, adjacent to the side core rod sliding blocks 4, of the fixed die 2, and the core rod ejecting sliding blocks 5 extend into the die cavity 3; the movable die 1 is provided with a step ejector rod 7, and the step ejector rod 7 extends into the die cavity 3.

Example 3

An anti-sticking tee bend pipe core pulling injection mold as shown in fig. 1-4 comprises: the device comprises a movable die 1, a fixed die 2, a cavity 3, a side core rod slide block 4, a core rod push block 5, an airtight piston 6 and a step ejector rod 7, wherein the fixed die 2 is arranged at the top of the movable die 1, and the cavity 3 is arranged between the fixed die 2 and the movable die 1; side core rod sliding blocks 4 are arranged on two sides of the fixed die 2, the side core rod sliding blocks 4 extend into the die cavity 3, airtight pistons 6 are arranged in the side core rod sliding blocks 4, core rod ejecting sliding blocks 5 are arranged on the surfaces, adjacent to the side core rod sliding blocks 4, of the fixed die 2, and the core rod ejecting sliding blocks 5 extend into the die cavity 3; the movable die 1 is provided with a step ejector rod 7, and the step ejector rod 7 extends into the die cavity 3.

The side core rod slider 4 described in this embodiment includes an insert 41, a sliding groove 42, a slider 43, a first core rod 44 and a driving cylinder 45, the fixed mold 2 is provided with the insert 41, the insert 41 is embedded and fixed with the fixed mold 2, the insert 41 is provided with the sliding groove 42, the sliding groove 42 is internally provided with the slider 43, the slider 43 is in sliding contact with the sliding groove 42, one end of the slider 43 is provided with the first core rod 44, the first core rod 44 extends into the cavity 3, the other end of the slider 43 is provided with the driving cylinder 45, and the driving cylinder 45 is arranged on the fixed mold 2.

Example 4

An anti-sticking tee core pulling injection mold as shown in fig. 1, 5 and 6 comprises: the device comprises a movable die 1, a fixed die 2, a cavity 3, a side core rod slide block 4, a core rod push block 5, an airtight piston 6 and a step ejector rod 7, wherein the fixed die 2 is arranged at the top of the movable die 1, and the cavity 3 is arranged between the fixed die 2 and the movable die 1; side core rod sliding blocks 4 are arranged on two sides of the fixed die 2, the side core rod sliding blocks 4 extend into the die cavity 3, airtight pistons 6 are arranged in the side core rod sliding blocks 4, core rod ejecting sliding blocks 5 are arranged on the surfaces, adjacent to the side core rod sliding blocks 4, of the fixed die 2, and the core rod ejecting sliding blocks 5 extend into the die cavity 3; the movable die 1 is provided with a step ejector rod 7, and the step ejector rod 7 extends into the die cavity 3.

Example 5

As shown in fig. 1 and 7, the anti-sticking tee core pulling injection mold comprises: the device comprises a movable die 1, a fixed die 2, a cavity 3, a side core rod slide block 4, a core rod push slide block 5, an airtight piston 6 and a stepped push rod 7, wherein the fixed die 2 is arranged at the top of the movable die 1, and the cavity 3 is arranged between the fixed die 2 and the movable die 1; side core rod sliding blocks 4 are arranged on two sides of the fixed die 2, the side core rod sliding blocks 4 extend into the die cavity 3, airtight pistons 6 are arranged in the side core rod sliding blocks 4, core rod ejecting sliding blocks 5 are arranged on the surfaces, adjacent to the side core rod sliding blocks 4, of the fixed die 2, and the core rod ejecting sliding blocks 5 extend into the die cavity 3; the movable die 1 is provided with a step ejector rod 7, and the step ejector rod 7 extends into the die cavity 3.

In this embodiment the movable mould 1 on be provided with

nozzle

8, 8 output of nozzle and the cooperation of die cavity 3.

In the embodiment, a receding groove is formed in one side of the fixed die 2, a brush roller 9 is arranged in the receding groove, the brush roller 9 comprises a hinge rod 91, a shaft sleeve 92, a first brush 93, a direction-changing helical gear set 94, a second brush 95 and a driving motor 96, the hinge rod 91 is hinged to the fixed die 2, the driving motor 96 is arranged in the hinge rod 91, the first brush 93 is arranged at the output end of the driving motor 96, the shaft sleeve 92 is arranged on the outer side of the hinge rod 91, and the first brush 93 penetrates out of the shaft sleeve 92; a deflecting bevel gear set 94 is arranged in the middle section of the first brush 93, a second brush 95 is connected with the deflecting bevel gear set 94, and the deflecting bevel gear set 94 is connected with the shaft sleeve 92 through a bearing; the first brush 93 and the second brush 95 are perpendicular to each other.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti mould tee bend pipe fitting injection mould of loosing core which characterized in that: the method comprises the following steps: the device comprises a movable die (1), a fixed die (2), a cavity (3), a side core rod slide block (4), a core rod ejecting slide block (5), an airtight piston (6) and a step ejecting rod (7), wherein the fixed die (2) is arranged at the top of the movable die (1), and the cavity (3) is arranged between the fixed die (2) and the movable die (1); side core rod sliding blocks (4) are arranged on two sides of the fixed die (2), the side core rod sliding blocks (4) extend into the die cavity (3), airtight pistons (6) are arranged in the side core rod sliding blocks (4), core rod ejecting sliding blocks (5) are arranged on the surfaces, adjacent to the side core rod sliding blocks (4), of the fixed die (2), and the core rod ejecting sliding blocks (5) extend into the die cavity (3); the movable die is characterized in that a step ejector rod (7) is arranged on the movable die (1), and the step ejector rod (7) extends into the die cavity (3).

2. The anti-sticking tee bend pipe fitting loose core injection mould of claim 1, characterized by: side core rod slider (4) including abaculus (41), spout (42), slider (43), first core rod (44) and drive actuating cylinder (45), be provided with abaculus (41) on cover half (2), abaculus (41) are inlayed fixedly with cover half (2), be provided with spout (42) on abaculus (41), be provided with slider (43) in spout (42), slider (43) and spout (42) sliding contact, slider (43) one end is provided with first core rod (44), first core rod (44) extend to in die cavity (3), slider (43) other end is provided with and drives actuating cylinder (45), it sets up on cover half (2) to drive actuating cylinder (45).

3. The anti-sticking tee bend pipe fitting loose core injection mould of claim 2, characterized by: the airtight piston (6) comprises a piston cavity (61), a piston (62), a connecting rod (63), a sealing plug (64) and an air guide channel (65), wherein the piston cavity (61) is arranged at one end, away from the cavity (3), of the sliding block (43), the piston (62) is arranged in the piston cavity (61), and the piston (62) is in sliding contact with the piston cavity (61); a connecting rod (63) is arranged on the piston (62), and a sealing plug (64) is arranged at one end, far away from the piston (62), of the connecting rod (63); an air guide channel (65) is arranged in the first core rod (44), the air guide channel (65) penetrates through the first core rod (44), a sealing plug (64) is arranged in the air guide channel (65), and the sealing plug (64) is in sliding contact with the air guide channel (65).

4. The anti-sticking tee bend pipe fitting loose core injection mould of claim 2, characterized by: the core rod ejecting sliding block (5) is provided with a second core rod (51), one end of the second core rod (51) is conical, the end part of the first core rod (44) is provided with an abdicating groove, and the second core rod (51) is matched with the first core rod (44).

5. The anti-sticking tee bend pipe fitting loose core injection mould of claim 1, characterized by: the ladder ejector rod (7) comprises an ejector plate (71), a first ejector rod (72), a release (73), a connecting ejector rod (74), a connecting plate (75) and a second ejector rod (76), wherein the ejector plate (71) is arranged on the movable die (1), the first ejector rod (72) is arranged on the ejector plate (71), and the first ejector rod (72) extends into the cavity (3); first knock-out pole (72) middle section is provided with dropout (73), be provided with on dropout (73) and connect ejector pin (74), connect ejector pin (74) and extend to cover half (2), be provided with connecting plate (75) in cover half (2), connecting plate (75) one end is connected with connecting ejector pin (74), the connecting plate (75) other end is provided with second knock-out pole (76), second knock-out pole (76) extend to in die cavity (3).

6. The anti-sticking tee bend pipe fitting loose core injection mould of claim 5, characterized by: the release (73) comprises a release plate (731), a first rod groove (732), a release groove (733), an adjusting release (734) and a connecting rod groove (735), the release plate (731) is arranged in the movable die (1), one end of the release plate (731) is provided with the first rod groove (732), the first rod groove (732) is matched with the first ejection rod (72), the other end of the release plate (731) is provided with the connecting rod groove (735), and the connecting rod groove (735) is matched with the connecting ejection rod (74); a tripping groove (733) is arranged between the first rod groove (732) and the connecting rod groove (735), a regulating tripping (734) is arranged in the tripping groove (733), the regulating tripping (734) contacts the first ejection rod (72), and the regulating tripping (734) contacts the connecting ejection rod (74); the sectional area of the top of the first ejection rod (72) is smaller than that of the bottom of the first ejection rod (72), and the sectional area of the top of the connecting ejection rod (74) is smaller than that of the bottom of the connecting ejection rod (74).

7. The anti-sticking tee bend pipe fitting loose core injection mould of claim 5, characterized by: one end of the connecting plate (75) is provided with a spring (77), one end of the spring (77) presses the fixed die (2), and the other end of the spring (77) presses the connecting plate (75).

8. The anti-sticking tee bend pipe fitting loose core injection mould of claim 1, characterized by: the movable mold (1) is provided with a spray nozzle (8), and the output end of the spray nozzle (8) is matched with the cavity (3).

9. The anti-sticking tee bend pipe fitting loose core injection mould of claim 8, characterized by: the fixed die structure is characterized in that a yielding groove is formed in one side of the fixed die (2), a brush roller (9) is arranged in the yielding groove, the brush roller (9) comprises an articulated rod (91), a shaft sleeve (92), a first brush (93), a turning bevel gear set (94), a second brush (95) and a driving motor (96), the articulated rod (91) is articulated on the fixed die (2), the driving motor (96) is arranged in the articulated rod (91), the first brush (93) is arranged at the output end of the driving motor (96), the shaft sleeve (92) is arranged on the articulated rod (91), and the first brush (93) penetrates out of the shaft sleeve (92); a deflecting bevel gear set (94) is arranged at the middle section of the first brush (93), the deflecting bevel gear set (94) is connected with a second brush (95), and the deflecting bevel gear set (94) is connected with the shaft sleeve (92) through a bearing; the first brush (93) and the second brush (95) are perpendicular to each other.