45-degree thread demoulding mould for plastic elbow gear with internal thread at one end

Abstract

The utility model discloses a thread demoulding mould for a 45-degree plastic elbow gear with an internal thread at one end, which relates to the technical field of plastic elbow injection moulding moulds and comprises a movable mould part, a fixed mould part, a thread demoulding mechanism and an inclined guide pillar slider demoulding mechanism, wherein the thread demolding mechanism comprises a motor fixing frame, a hydraulic motor, a driving gear, a transmission gear, a thread core, a nut, a water distribution core and a fixed connecting plate; the inclined guide pillar sliding block demolding mechanism comprises a wedge block, an inclined guide pillar, a guide sliding block, an inclined guide pillar sliding block and an inclined hole; during thread demolding of the threaded end of the plastic elbow, a gear transmission structure is adopted, the oil cylinder is used for driving the rack to conduct demolding and resetting operation, and the other end of the plastic elbow is provided with a side-pulling demolding structure with the inclined guide column matched with the sliding block; produced products are good in precision, and a threaded connection part guarantees the sealing effect. And the production cycle is within 45 seconds through actual application detection.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic elbow injection molding molds, in particular to a 45-degree one-end internally threaded plastic elbow gear thread-removing mold. Background Art

[0002] As attached Figure 8 The plastic elbow shown is a sewer pipe fitting with an internal thread at one end and a smooth pipe wall at the other end. It is used for sealing connections of pipe fittings, requiring good product precision, especially the threaded connection part must be well sealed. The 45-degree elbows injection molded in the prior art are mostly for elbows with smooth pipe walls at both ends, but cannot be used for elbows with internal threads.

[0003] The application number is CN201922085446.X, which is a low-cost synchronous core-pulling mechanism for a vertical injection mold for making a 45-degree elbow. It includes an upper template and a lower template. The upper template and the lower template are combined to form a plurality of molding cavities symmetrically arranged along the center line of the lower template, and the molding cavity is arranged vertically. The vertical arrangement of the molding cavity enables multiple molding cavities to be arranged in parallel and side by side in the mold, which can greatly improve the production efficiency without changing the total volume of the mold. The vertical core head is fixed on the upper template. When the mold is opened, the vertical core head can be directly separated from the product for core pulling. The driving cylinder can drive the oblique core head to separate from the product for core pulling through the synchronous push plate. The driving cylinder is connected to the middle of the synchronous push plate to improve the synchronization between multiple oblique core heads. The displacement of the two ends of the synchronous push plate will not be unbalanced due to manual operation errors, which will cause damage to the product or mold. Only one cylinder is needed to realize core pulling, which reduces the cost of the mold. Although it can be used for injection molding multiple plastic elbows at one time, it cannot be used for elbows with internal threads. Utility Model Content

[0004] The purpose of the utility model is to provide a 45-degree plastic elbow gear dethreading mold with an internal thread at one end, so as to solve the problem that the existing injection mold for 45-degree elbows proposed in the above background technology can only be used for elbows with smooth pipe walls at both ends, but is not applicable to 45-degree elbows with internal threads.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 45-degree one-end internally threaded plastic elbow gear thread removal mold, comprising a movable mold part and a fixed mold part; the movable mold part comprises an I-shaped bottom plate fixedly connected to a movable plate of an injection molding machine at the bottom, the left and right sides of the top surface of the I-shaped bottom plate are upwardly convex rectangular convex blocks, a bottom needle plate on the lower side and a surface needle plate on the upper side are arranged between the two rectangular convex blocks, a movable mold plate is arranged on the top surfaces of the two rectangular convex blocks, a rectangular groove is arranged on the upper surface of the movable mold plate and a movable mold insert is arranged embedded therein, and the movable mold plate is provided with a movable mold insert. Two grooves matching the outer shape of the internally threaded plastic elbow are arranged on the top surface of the mold insert; the fixed mold part comprises an upper I-shaped panel fixedly connected to the fixed plate of the injection machine and a lower fixed mold plate, the lower surface of the fixed mold plate is provided with an inwardly concave fixed mold cavity and a fixed mold insert is embedded therein, and two grooves matching the outer shape of the internally threaded plastic elbow are arranged on the bottom surface of the fixed mold insert; a sprue bushing is arranged at the center of the top surface of the I-shaped panel, and a sprue bushing is arranged on the inner side of the sprue bushing, which sequentially penetrates the I-shaped panel, the fixed mold plate, the fixed mold insert and is connected to the inner side of the sprue bushing. The groove on the bottom surface of the fixed mold insert is connected to the flow channel; a thread demoulding mechanism is arranged at the center of one side of the movable mold plate, and two sets of inclined guide column slider demoulding mechanisms are arranged on the other side opposite thereto; the thread demoulding mechanism includes a motor fixing frame arranged on the side of the movable mold plate, a hydraulic motor is arranged in the middle of the motor fixing frame, the hydraulic motor shaft passes through the motor fixing frame and a driving gear is arranged at its front end, the driving gear is meshed and connected with two transmission gears at the same horizontal height, each transmission gear is sleeved and fixedly arranged on the outer wall of a coaxially arranged thread core, and a nut fixedly arranged on the movable mold plate is threadedly connected in the middle of each thread core; the inclined guide column slider demoulding mechanism includes a wedge block with an inclined surface at the back arranged on the fixed mold plate, and an inclined guide column is arranged on the wedge block; two guide sliders are arranged on the movable mold plate, an inclined guide column slider is commonly arranged between the two guide sliders, and an inclined hole matching the inclined guide column is arranged on the inclined guide column slider; a part of the forming core is arranged on the side of the inclined guide column slider close to the movable mold insert.

[0006] Furthermore, a guide slide bar which can slide relatively to each other and is fixed on the top surface of the I-shaped bottom plate is arranged at the four corners of the bottom needle plate and the surface needle plate; a reset guide rod which extends into the interior of the movable template and can slide without hindrance is arranged at the four corners of the bottom needle plate near the four guide slide bars; the surface needle plate is sleeved on the four reset guide rods, and a reset spring which is sleeved on the reset guide rod and rests on the bottom surface of the movable template is arranged on its top surface; a flow channel push rod is arranged at the center of the surface needle plate, and a plurality of demolding push rods are respectively arranged on both sides of the flow channel push rod; the flow channel push rod and the plurality of demolding push rods all penetrate the movable template and the movable mold insert and slide without hindrance.

[0007] Preferably, a plurality of ejection holes are arranged on the I-shaped bottom plate, and a plurality of ejection pads are arranged on the bottom surface of the bottom needle plate at positions corresponding to the ejection holes.

[0008] Furthermore, a plurality of positioning protrusions are arranged on the top surface of the movable template, and a plurality of positioning grooves are correspondingly arranged at the positioning positions on the bottom surface of the fixed template.

[0009] Preferably, the threaded core is hollow and has a water distribution core inside it, a partially molded core is provided at the inner end of each of the two water distribution cores, and the outer ends are connected to a fixed connecting plate by bolts, and the threaded core is rotatable relative to the water distribution core; a water channel is built into the water distribution core and a circulating water pipe is connected to the outer side of the fixed connecting plate.

[0010] Preferably, an upward convex square cone is provided on the upper portion of the nut, and a square cone groove is provided at a corresponding position on the bottom surface of the fixed template.

[0011] Furthermore, cooling water channels are provided in the movable mold insert and the fixed mold insert, and respectively penetrate the corresponding movable mold plate and the fixed mold plate and are respectively provided with corresponding water inlet and outlet interfaces on the outside.

[0012] Preferably, a water baffle is provided in the cooling water channel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a gear transmission structure to utilize an oil cylinder to drive a rack to perform demoulding and resetting operations when demoulding the threaded end of a plastic elbow. An inclined guide column is arranged at the other end of the plastic elbow to cooperate with a side-drawing demoulding structure of a slide block. The produced product has good precision and the threaded connection part ensures a sealing effect. The production cycle is within 45 seconds after actual application detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] Figure 4 It is a schematic diagram of the thread demoulding mechanism;

[0019] Figure 5 It is a top view of the movable mold part;

[0020] Figure 6 for Figure 5 Cross-sectional view of the middle BB;

[0021] Figure 7 for Figure 5 Cross-sectional view of CC;

[0022] Figure 8 This is a schematic diagram of a plastic elbow;

[0023] In the figure: movable mold part-1, I-shaped bottom plate-11, bottom needle plate-12, surface needle plate-13, guide slide rod-14, movable mold plate-15, movable mold insert-16, reset guide rod-17, reset spring-18, runner ejector rod-19, demoulding ejector rod-20, ejection hole-21, ejection pad-22, positioning protrusion-23, cooling water channel-24, baffle plate-25, fixed mold part-3, I-shaped panel-31, fixed mold plate-32, fixed mold insert-33 , gate sleeve -34, positioning groove -35, square cone groove -36, thread demolding mechanism -4, motor fixing frame -41, hydraulic motor -42, driving gear -43, transmission gear -44, thread core -45, nut -46, water distribution core -47, fixed connecting plate -48, upper convex square cone -49, inclined guide column slider demolding mechanism -5, wedge block -51, inclined guide column -52, guide slider -53, inclined guide column slider -54, inclined hole -55. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to Figure 1-8 , Figure 1 It is a schematic diagram of the utility model; Figure 2 It is a schematic diagram of the structure of the utility model; Figure 3 for Figure 2 A magnified view of middle; Figure 4 It is a schematic diagram of the thread demoulding mechanism; Figure 5 It is a top view of the movable mold part; Figure 6 for Figure 5 Cross-sectional view of the middle BB; Figure 7 for Figure 5 Cross-sectional view of CC; Figure 8 Schematic diagram of plastic elbow.

[0026] Reference Figure 8 It is a 45-degree elbow in the sewer pipe fittings, one end of which has an internal thread for sealing connection of the pipe fittings, and the other end has a smooth pipe wall.

[0027] The utility model provides a 45-degree one-end internal thread plastic elbow gear thread stripping mold, comprising a movable mold part 1 and a fixed mold part 3, the movable mold part 1 comprises an I-shaped bottom plate 11 arranged at the bottom, the bottom surface of the I-shaped bottom plate 11 can be fixedly connected with the movable plate of the injection molding machine by bolts, so that the movable mold part 1 can move synchronously with the movable plate of the injection molding machine, the left and right sides of the top surface of the I-shaped bottom plate 11 are upwardly convex rectangular convex blocks, and a fixed mold part 3 is arranged on the top surface of the I-shaped bottom plate 11 between the two rectangular convex blocks. There are a bottom needle plate 12 on the lower side and a surface needle plate 13 on the upper side, and a guide slide rod 14 which can slide relatively and be fixed on the top surface of the I-shaped bottom plate 11 is arranged at the four corners of the bottom needle plate 12 and the surface needle plate 13. A movable template 15 is arranged on the top surface of the two rectangular protrusions of the I-shaped bottom plate 11. The upper surface of the movable template 15 is provided with a rectangular groove and a movable mold insert 16 is embedded therein. Two grooves which match the shape of the internal threaded plastic elbow are arranged on the top surface of the movable mold insert 16. The fixed mold part 3 includes an uppermost I-shaped panel 31, and the I-shaped panel 31 can be fixedly connected to the fixed plate of the injection molding machine by bolts, so that the fixed mold part 3 is fixedly installed on the injection molding machine. A fixed mold plate 32 is arranged below the I-shaped panel 31, and an inwardly concave fixed mold cavity is arranged on the lower surface of the fixed mold plate 32 and a fixed mold insert 33 is embedded therein, and two grooves matching the outer shape of the internal threaded plastic elbow are arranged on the bottom surface of the fixed mold insert 33; a gate sleeve 34 is arranged at the center of the top surface of the I-shaped panel 31, and a flow channel is arranged on the inner side of the gate sleeve 34, and the flow channel passes through the I-shaped panel 31, the fixed mold plate 32, and the fixed mold insert 33 in sequence, and is connected to the groove on the bottom surface of the fixed mold insert 33.

[0028] A reset guide rod 17 is provided at each of the four corners of the bottom needle plate 12 near the four guide slide rods 14, and the reset guide rod 17 extends into the interior of the movable template 15 and can slide without hindrance, the surface needle plate 13 is sleeved on the four reset guide rods 17 and a reset spring 18 sleeved on the reset guide rod 17 is provided on the top surface, and the top end of the reset spring 18 abuts against the bottom surface of the movable template 15; a flow channel ejector rod 19 is provided at the center of the surface needle plate 13, and a plurality of demolding ejector rods 20 are respectively provided on both sides of the flow channel ejector rod 19, and the flow channel ejector rod 19 and the plurality of demolding ejector rods 20 all penetrate the movable template 15 and the movable mold insert 16 and slide without hindrance.

[0029] The I-shaped bottom plate 11 is provided with a plurality of ejection holes 21 , and a plurality of ejection pads 22 are provided on the bottom surface of the bottom needle plate 12 at positions corresponding to the ejection holes 21 , and the ejection mechanism of the injection molding machine can perform demoulding operations by pushing the ejection pads 22 .

[0030] A threaded demoulding mechanism 4 is arranged at the center of one side of the movable template 15 , and two sets of inclined guide column and slider demoulding mechanisms 5 are arranged on the other side opposite thereto.

[0031] A plurality of positioning protrusions 23 are arranged on the top surface of the movable mold plate 15, and a plurality of positioning grooves 35 are correspondingly arranged at the bottom surface positioning positions of the fixed mold plate 32. The positioning protrusions 23 and the positioning grooves 35 are used in coordination so that the movable mold part 1 and the fixed mold part 3 can be precisely engaged and connected.

[0032] The thread demoulding mechanism 4 includes a motor fixing frame 41 arranged on the side of the movable template 15, a hydraulic motor 42 is arranged in the middle of the motor fixing frame 41, the shaft of the hydraulic motor 42 passes through the motor fixing frame 41 and a driving gear 43 is arranged at its front end, the driving gear 43 is meshed and connected with two transmission gears 44 at the same horizontal height, each transmission gear 44 is sleeved and fixedly arranged on the outer wall of a coaxially arranged thread core 45, and a nut 46 fixedly arranged on the movable template 15 is threadedly connected in the middle of each thread core 45, the thread core 45 is hollow and a water distribution core 47 is arranged inside it, a partial molding core is arranged at one end close to the inner side of the two water distribution cores 47, and a fixed connecting plate 48 is connected to the other end close to the outer side by bolts, and the thread core 45 is rotatable relative to the water distribution core 47; the water distribution core 47 has a water channel built in and a circulating water pipe is connected to the outer side of the fixed connecting plate 48. In addition, an upward convex square cone 49 is provided on the upper portion of the nut 46 , and a square cone groove 36 is provided at a corresponding position on the bottom surface of the fixed template 32 .

[0033] When in use, the hydraulic motor 42 drives the connected driving gear 43, and drives the two meshing transmission gears 44 to rotate simultaneously, and drives the two thread cores to rotate synchronously. The rotation of the thread core rotates the thread core from the thread of the plastic part to demould it. At the same time, due to the action of the fixed nut 46, the thread core can move outward during the rotation process, so that the thread core 45 and part of the molding core are completely pulled out of the elbow.

[0034] The inclined guide column slider demolding mechanism 5 includes a wedge block 51 with an inclined surface at the back arranged on the fixed mold plate 32, and an inclined guide column 52 is also arranged on the wedge block 51. At the same time, two guide sliders 53 are arranged on the movable mold plate 15, and an inclined guide column slider 54 is commonly arranged between the two guide sliders 53. The inclined guide column slider 54 is provided with an inclined hole 55 that cooperates with the inclined guide column 52. At the same time, a part of the molding core is arranged on the side of the inclined guide column slider 54 close to the movable mold insert 16; when the mold is opened, there is relative movement between the inclined guide column slider 54 and the inclined guide column 52, and through the coordinated action of the inclined guide column 52 and the two guide sliders 53, the inclined guide column slider 54 slides to the outside of the mold, and at the same time drives part of the molding core to be pulled out from the inside of the plastic elbow to complete the demolding operation.

[0035] In addition, cooling water channels 24 are provided in the movable mold insert 16 and the fixed mold insert 33 , and respectively penetrate the corresponding movable mold plate 15 and the fixed mold plate 32 and are respectively provided with corresponding inlet and outlet water interfaces on the outside; at the same time, a water baffle 25 is provided in the cooling water channel 24 .

[0036] When in use, the specific actions are as follows:

[0037] The fixed mold part 3 of the mold is fixed on the fixed plate of the injection molding machine through the I-shaped panel 31, and the movable mold part 1 of the mold is fixed on the movable plate of the injection molding machine through the I-shaped bottom plate 11; before the mold is opened, the inclined surface of the inclined guide column slider 54 is contacted and wedged by the wedging block 51, and the upper convex square cone 49 on the upper part of the nut is also wedged in the square cone groove 36 corresponding to the fixed mold plate. Before the mold is opened, the control system of the injection molding machine issues an instruction to control the solenoid valve of the hydraulic motor 42 to make a corresponding action, and the high-pressure hydraulic oil is sent to the appropriate oil inlet of the hydraulic motor 42, so that the hydraulic motor rotates counterclockwise, and the two thread cores 45 are driven to rotate counterclockwise through the meshing gears. The threads at the rear of the thread core 45 rotate relative to the nut 46 to make the thread core 45 withdraw the elbow and the cavity, and withdraw to a position that does not hinder the ejection of the product from the cavity. At the same time, the timer of the control system of the injection molding machine also finishes timing, and issues an instruction to control the solenoid valve of the hydraulic motor 42 to make a corresponding action, stop the high-pressure hydraulic oil from being sent to the oil inlet of the hydraulic motor, and stop the thread core from rotating. And issue an instruction to open the mold.

[0038] When the mold is opened, the movable mold part 1 and the fixed mold part 2 are separated at the contact surface between the movable mold plate 15 and the fixed mold plate 32, and the wedge block 51 fixed to the fixed mold plate 32 makes a separation movement together. At this time, the inclined guide post slider 54 is pushed by the inclined guide post 52 fixed on the wedge block 51 and inserted in the inclined hole 55 of the slider, so that the inclined guide post slider 54 is pulled sideways while the mold is opened. As the mold opening proceeds, when the inclined guide post 52 is completely pulled out of the inclined hole 55, the inclined guide post slider 54 is pulled sideways into place. When the mold is opened to the point where the product and the runner can be smoothly taken out from the mold parting surface, the mold opening stops. Next, under the control of the injection molding machine's control system, the ejector mechanism on the side of the movable mold part 1 of the injection molding machine is activated, and the ejector bar presses on the ejector pad 22, pushing the bottom needle plate 12 and the surface needle plate 13 and overcoming the pressing force of the reset spring to drive the demolding ejector pin 20, the reset guide rod 17 and the runner ejector pin 19 above to push the product shrunk on the movable mold cavity out of the cavity, and at the same time eject the runner condensate. As the ejection continues and reaches a suitable height, the elbow is completely out of contact with the movable mold part 1 and the ejection stops. At this time, we can easily take out the product and the gate condensate from the mold.

[0039] After that, the ejection mechanism of the injection molding machine retreats and resets, and the bottom needle plate 12, the surface needle plate 13, and the demoulding ejector pin 20, the reset guide rod 17, and the runner ejector pin 19 thereon will also reset under the action of the reset spring elastic force; after resetting, the mold can be closed again. As the mold is closed, the inclined guide column slider 54 is inserted into the corresponding inclined hole 55 along with the inclined guide column 52, pushing the inclined guide column slider 54 to move forward. When the inclined surface of the wedge block 51 is wedged with the inclined surface of the inclined guide column slider 54, the movable mold part 1 and the fixed mold part 2 are also completely closed, and at the same time, the upper convex square cone 49 on the upper part of the nut is also wedged in the corresponding square cone groove 36 of the fixed mold plate 32. The control system of the injection molding machine issues a command to control the solenoid valve of the hydraulic motor 42 to make a corresponding action, and the high-pressure hydraulic oil is sent to the appropriate oil inlet of the hydraulic motor, so that the hydraulic motor 42 rotates counterclockwise, and the two thread cores 45 are driven to rotate clockwise through the meshing gears, and rotate relative to the nut to insert the thread core into the cavity until it contacts the end of the inclined guide column slider. The timer of the control system of the injection molding machine also finishes timing and issues a command to control the solenoid valve of the hydraulic motor 42 to make corresponding actions, stop the high-pressure hydraulic oil from being fed into the oil inlet of the hydraulic motor, stop the thread core 45 from rotating, and issue a command to the injection molding machine to start injecting the molten plastic into the runner and cavity, entering the next working cycle.

[0040] The utility model adopts a gear transmission structure to utilize an oil cylinder to drive a rack to perform demoulding and resetting operations when demoulding the threaded end of a plastic elbow. An inclined guide column is arranged at the other end of the plastic elbow to cooperate with a side-drawing demoulding structure of a slide block. The produced product has good precision and the threaded connection part ensures a sealing effect. The production cycle is within 45 seconds after actual application detection.

[0041] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A 45-degree one-end internal thread plastic elbow gear thread removal mold, characterized by: The invention comprises a movable mold part (1) and a fixed mold part (3); the movable mold part (1) comprises an I-shaped bottom plate (11) at the bottom fixedly connected to a movable plate of an injection molding machine, the left and right sides of the top surface of the I-shaped bottom plate (11) are upwardly convex rectangular convex blocks, a bottom needle plate (12) at the bottom and a surface needle plate (13) at the top are arranged between the two rectangular convex blocks, a movable mold plate (15) is arranged on the top surfaces of the two rectangular convex blocks, a rectangular groove is arranged on the upper surface of the movable mold plate (15) and a movable mold insert (16) is arranged embedded therein, and two grooves matching the outer shape of an internally threaded plastic elbow are arranged on the top surface of the movable mold insert (16); the fixed mold part (3) comprises an upper I-shaped bottom plate (11) fixedly connected to a movable plate of an injection molding machine, and a movable mold insert (16) is arranged on the upper surface of the movable mold insert (16). The fixed plate is fixedly connected to an I-shaped panel (31) and a fixed mold plate (32) below, wherein a concave fixed mold cavity is provided on the lower surface of the fixed mold plate (32) and a fixed mold insert (33) is embedded therein, and two grooves matching the outer shape of the internally threaded plastic elbow are provided on the bottom surface of the fixed mold insert (33); a sprue bushing (34) is provided at the center of the top surface of the I-shaped panel (31), and a flow channel is provided on the inner side of the sprue bushing (34) which passes through the I-shaped panel (31), the fixed mold plate (32) and the fixed mold insert (33) in sequence and is connected to the groove on the bottom surface of the fixed mold insert (33); a threaded stripping groove is provided at the center of one side of the movable mold plate (15) The thread demoulding mechanism (4) is provided with two sets of inclined guide column slider demoulding mechanisms (5) on the other side opposite thereto; the thread demoulding mechanism (4) comprises a motor fixing frame (41) arranged on the side of the movable platen (15); a hydraulic motor (42) is arranged in the middle of the motor fixing frame (41); a shaft of the hydraulic motor (42) passes through the motor fixing frame (41) and a driving gear (43) is arranged at the front end thereof; the driving gear (43) is meshedly connected with two transmission gears (44) at the same level; each transmission gear (44) is sleeved and fixedly arranged on the outer wall of a coaxially arranged thread core (45), and at each thread core ( The middle of each of the two guide slides (53) is threadedly connected to a nut (46) fixedly arranged on the movable mold plate (15); the inclined guide post slider demoulding mechanism (5) comprises a wedge-locking block (51) with an inclined surface at the back arranged on the fixed mold plate (32), and an inclined guide post (52) is arranged on the wedge-locking block (51); two guide slides (53) are arranged on the movable mold plate (15), and an inclined guide post slider (54) is arranged between the two guide slides (53), and an inclined hole (55) cooperating with the inclined guide post (52) is arranged on the inclined guide post slider (54); a part of the molding core is arranged on the side of the inclined guide post slider (54) close to the movable mold insert (16).

2. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 1, characterized in that: A guide slide bar (14) which can slide relatively and is fixed on the top surface of the I-shaped bottom plate (11) is arranged at the four corners of the bottom needle plate (12) and the surface needle plate (13); a reset guide rod (17) which extends into the interior of the movable template (15) and can slide without hindrance is arranged at the four corners of the bottom needle plate (12) near the four guide slide bars (14); the surface needle plate (13) is sleeved on the four reset guide rods (17), and a reset spring (18) is arranged on its top surface, which is sleeved on the reset guide rod (17) and abuts against the bottom surface of the movable template (15); a flow channel push rod (19) is arranged at the center of the surface needle plate (13), and a plurality of demoulding push rods (20) are respectively arranged on both sides of the flow channel push rod (19); the flow channel push rod (19) and the plurality of demoulding push rods (20) all penetrate the movable template (15) and the movable mold insert (16) and slide without hindrance.

3. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 2, characterized in that: The I-shaped bottom plate (11) is provided with a plurality of ejection holes (21), and a plurality of ejection pads (22) are provided on the bottom surface of the bottom needle plate (12) at positions corresponding to the ejection holes (21).

4. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 3, characterized in that: A plurality of positioning protrusions (23) are arranged on the top surface of the movable die plate (15), and a plurality of positioning grooves (35) are correspondingly arranged at the positioning positions on the bottom surface of the fixed die plate (32).

5. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 4, characterized in that: The threaded core (45) is hollow and has a water distribution core (47) disposed therein. A partially molded core is disposed at one end of the two water distribution cores (47) close to the inner side, and a fixed connection plate (48) is connected to the other end close to the outer side by bolts. The threaded core (45) is rotatable relative to the water distribution core (47). The water distribution core (47) has a water channel disposed therein and is connected to a circulating water pipe on the outer side of the fixed connection plate (48).

6. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 5, characterized in that: An upward convex square cone (49) is provided on the upper part of the nut (46), and a square cone groove (36) is provided at a corresponding position on the bottom surface of the fixed template (32).

7. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 6, characterized in that: The movable mold insert (16) and the fixed mold insert (33) are both provided with cooling water channels (24), which respectively penetrate the corresponding movable mold plate (15) and the fixed mold plate (32) and are respectively provided with corresponding water inlet and outlet interfaces on the outside.

8. The 45-degree one-end internally threaded plastic elbow gear thread removal mold according to claim 7, characterized in that: A water baffle (25) is provided in the cooling water channel (24).

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