Automobile part machining tool convenient to demould and using method thereof

By designing a processing tooling for automotive plastic accessories that integrates fixed molds and dynamic molds, and using a motor-driven adjustment frame to achieve automatic molding and unloading, the inefficiency problem caused by manual dependence in the prior art is solved, and the injection molding efficiency and convenience of tooling are improved.

CN119610564APending Publication Date: 2025-03-14NINGGUO KEBOER INTELLIGENT MASCH TOOL CO LTD
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Patent Information

Application Number
CN202411866371.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-03-14

AI Technical Summary

Technical Problem

Existing automotive plastic accessories are highly dependent on labor when demolding, with large labor, low overall injection molding efficiency, and inconvenient for demolding and unloading.

Method used

A processing tool for automobile parts including fixed molds and moving molds is designed. The motor drives the adjustment frame to drive the injection molding parts on the mold rod to realize mold removal and discharge, and the mold removal tool is concentrated in the mold to reduce manual operation.

Benefits of technology

It realizes automatic molding and unloading, improves injection molding efficiency, reduces labor, simplifies work design, and is convenient for use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of automobile part machining, and discloses an automobile part machining tool convenient to demould, the automobile part machining tool convenient to demould comprises a fixed mould and a movable mould, the adjacent surfaces of the fixed mould and the movable mould are each provided with a receding opening, a movable strip is installed in each receding opening, the two sides of each movable strip are each fixedly connected with a plurality of mould rods, and the outer walls of the mould rods are slidably connected with a discharging plate; lifting units used for lifting the movable strips are installed between the two sides of the movable mold and the movable strips, sliding rails are installed on the two sides of the fixed mold, motors are installed at one ends of the sliding rails, the output ends of the motors are rotationally connected with two-way lead screws, the two-way lead screws are in threaded connection with two adjusting frames, and notches are formed in the adjusting frames; after injection molding of the automobile plastic parts is completed, the motor is used for driving the adjusting frame, the adjusting frame drives the discharging plate to push the injection molding parts on the mold rod, demolding and discharging of the injection molding parts are achieved, demolding tools are concentrated in the mold, the mold does not need to be manually moved, then the tools are used for demolding, use is convenient, the discharging efficiency is high, and the labor amount is reduced.
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Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to an automobile parts processing tooling which is convenient for demoulding and a use method thereof. Background Art

[0002] During production, automotive plastic parts are made by injection molding. For sleeve-shaped plastic parts, the mold can mold multiple plastic parts at one time. In order to facilitate the removal of multiple injection-molded parts from the mold, a demolding tool is used to demold multiple plastic parts at one time.

[0003] When demolding existing plastic parts, the movable mold is manually taken out from the fixed mold and the movable mold, the movable mold brings the injection molded part out of the fixed mold and the movable mold, the movable mold is placed in a demolding tool, and the demolding tool pushes the injection molded part on the movable mold to achieve demolding. However, this demolding method is highly dependent on manual labor, has a large amount of labor, low overall injection molding efficiency, and is not convenient for demolding and unloading. Therefore, an automotive parts processing tool that is easy to demold and a use method thereof are proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automobile parts processing tooling that is easy to demould and a use method thereof to solve the background technical problems.

[0005] In the first aspect, to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automobile parts processing tooling that is easy to demold, comprising a fixed mold and a movable mold, adjacent surfaces of the fixed mold and the movable mold are provided with a clearance opening, movable bars are installed in the clearance opening, multiple mold rods are fixedly connected to both sides of the movable bar, the outer wall of the mold rod is slidably connected to a blanking plate, a lifting unit for lifting the movable bar is installed between the two sides of the movable mold and the movable bar, slide rails are installed on both sides of the fixed mold, a motor is installed at one end of the slide rail, the output end of the motor is rotatably connected to a bidirectional screw rod, the bidirectional screw rod is threadedly connected to two adjustment frames, and a slot is opened on the adjustment frame, and the slot is sleeved on the outer wall of the blanking plate.

[0006] Preferably, the lifting unit comprises rectangular blocks fixedly mounted at both ends of the movable bar and a sleeve mounted on the outer wall of the movable mold, the side wall of the sleeve is provided with a rectangular groove, and the rectangular groove is sleeved on the outer wall of the rectangular block.

[0007] Preferably, both side walls of the fixed mold are provided with a plurality of limit grooves, and the first rack and the second rack are slidably connected in the two limit grooves on the same side, respectively, one end of the second rack is fixedly connected to the adjacent side wall of the adjustment frame, and the side wall of the fixed mold is rotatably connected to a gear, the first rack and the second rack are oppositely distributed and are both meshed with the gear, and one end of the two first racks is connected to a material receiving plate.

[0008] Preferably, a through slot is provided on the side of the adjustment frame, and the first rack is movably plugged into the through slot.

[0009] Preferably, a rotating rod is passed through the middle of the material receiving plate, and the two ends of the rotating rod are rotatably connected to the two first racks respectively. Guide sleeves are installed on both sides of the fixed mold, and guide rods are rotatably connected on both sides of the end of the material receiving plate. The guide rods are slidably connected in the guide sleeves, and the first racks and the guide sleeves are staggered. The part of the guide sleeve located outside the fixed mold is bent upward, and a groove is opened on the side wall of the guide sleeve, and the rotating rod is movably inserted into the guide sleeve through the groove.

[0010] Preferably, a counterweight bar is fixedly connected to one end of the receiving plate facing outwards, and the counterweight bar applies gravity to the receiving plate with the rotating rod as the axis.

[0011] Preferably, a plurality of convex racks are fixedly connected to the upper surface of the receiving plate, and the convex racks are located at one end of the receiving plate close to the fixed mold.

[0012] In a second aspect, a method for using a mold-facilitating automobile part processing tooling includes the mold-facilitating automobile part processing tooling described in any one of the first aspects, and the specific method of using the tooling includes:

[0013] The movable mold descends, and the movable strip is driven by the sleeve frame and the rectangular block to be inserted into the clearance opening of the fixed mold until the movable mold and the fixed mold are closed, and then injection molding is carried out;

[0014] After the injection molding is completed, the movable mold rises, and the movable mold is first separated from the injection molded part, and then the sleeve frame cooperates with the rectangular block to drive the movable bar to move out of the clearance port of the fixed mold. At this time, the injection molded part is separated from the fixed mold, and the injection molded part is located in the clearance space between the fixed mold and the movable mold;

[0015] The motor is started to work, and the motor drives the two adjustment frames to move in opposite directions through the bidirectional screw rod. The adjustment frame drives the blanking plate to move on the outer wall of the mold rod and drives the second rack to move. The blanking plate pushes the injection molded part on the outer wall of the mold rod to demold. The second rack drives the gear to rotate, and then the first rack drives the receiving plate to move into the space between the fixed mold and the movable mold until the injection molded part falls from the outer wall of the mold rod and falls on the receiving plate.

[0016] At this time, the motor drives the bidirectional screw to reverse, so that the two adjustment frames are brought closer, and the receiving plate drives the injection molded parts to move outward from between the fixed mold and the movable mold. The guide rod on the side wall of the receiving plate slides in the guide sleeve, and the guide sleeve is bent upward to guide the guide rod, and the gravity of the counterweight bar at the end of the receiving plate makes the receiving plate rotate in an inclined state. The receiving plate is completely moved outside the fixed mold and the movable mold, and the injection molded parts slide on the inclined receiving plate, and the material can be unloaded and injection molded again.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] After the injection molding of the automobile plastic parts is completed, the present invention uses a motor to drive the adjusting frame, and the adjusting frame drives the blanking plate to push the injection molded parts on the mold rod, so as to realize the demoulding and blanking of the injection molded parts, and the demoulding tooling is concentrated in the mold. There is no need to manually move the mold and then use the tooling for demoulding. The method is convenient to use, has high blanking efficiency, and reduces labor.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the movable mold and the fixed mold in the closed state of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the demoulding state of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure above the fixed mold of the present invention;

[0024] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0025] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 7 It is a schematic diagram of the connection structure between the adjustment frame and the slide rail of the present invention;

[0027] Figure 8 It is a schematic diagram of the position structure of the material receiving plate, the first rack and the guide sleeve of the present invention.

[0028] In the figure: 1. fixed mold; 2. movable mold; 3. clearance; 4. movable bar; 5. mold rod; 6. blanking plate; 7. lifting unit; 71. rectangular block; 72. sleeve; 73. rectangular slot; 8. slide rail; 9. motor; 10. bidirectional screw; 11. adjustment frame; 12. notch; 13. limit slot; 14. first rack; 15. receiving plate; 16. second rack; 17. gear; 18. rotating rod; 19. guide sleeve; 20. guide rod; 21. clearance; 22. through slot; 23. convex rack; 24. counterweight bar. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-8 The present invention provides an automobile parts processing tooling and a method for using the tooling for easy demoulding, comprising a fixed mold 1 and a movable mold 2, wherein the fixed mold 1 is in a fixed state, and the movable mold 2 is lifted and lowered by a lifting device, and adjacent surfaces of the fixed mold 1 and the movable mold 2 are provided with a clearance opening 3, and a movable bar 4 is installed in the clearance opening 3, and multiple mold rods 5 are fixedly connected on both sides of the movable bar 4. During injection molding, the fixed mold 1 and the movable mold 2 are closed, and the movable bar 4 is located in the clearance opening 3 of the fixed mold 1 and the movable mold 2, and the mold rod 5 is located in the injection molding groove of the fixed mold 1 and the movable mold 2, and part of the mold rod 5 is clamped by the fixed mold 1 and the movable mold 2, and the outer wall of the mold rod 5 is slidably connected with a blanking plate 6, and the sum of the thickness of the two blanking plates 6 and the thickness of the movable bar 4 matches the width of the clearance opening 3, so that the blanking plate 6 can be inserted into the clearance opening 3 along with the movable bar 4, and the movable mold 2 is inserted into the clearance opening 3. A lifting unit 7 for lifting the movable bar 4 is installed between the two sides of the mold 2 and the movable bar 4. The lifting unit 7 includes rectangular blocks 71 fixedly installed at both ends of the movable bar 4 and a sleeve 72 installed on the outer wall of the movable mold 2. The side wall of the sleeve 72 is provided with a rectangular groove 73, and the rectangular groove 73 is sleeved on the outer wall of the rectangular block 71. After the injection molding is completed, the movable mold 2 rises, first driving the sleeve 72 to rise, and the rectangular groove 73 on the sleeve 72 slides on the outer wall of the rectangular block 71. At this time, the movable mold 2 is separated from the injection molded part until the bottom surface of the rectangular groove 73 contacts the rectangular block 71. At this time, the sleeve 72 rises through the rectangular block 71, thereby separating the movable bar 4 from the yielding port 3 of the fixed mold 1, and separating the injection molded part from the fixed mold 1, so that the movable bar 4 and the injection molded part are located in the space between the fixed mold 1 and the movable mold 2.

[0032] Slide rails 8 are installed on both sides of the fixed mold 1, and a motor 9 is installed at one end of the slide rail 8. The output end of the motor 9 is rotatably connected to a bidirectional screw rod 10, and the bidirectional screw rod 10 is threadedly connected to two adjustment frames 11 that slide in the slide rails 8. The length of the blanking plate 6 is greater than the length of the movable bar 4. A notch 12 is opened on the adjustment frame 11, and the notch 12 is sleeved on the outer wall of the blanking plate 6. The length of the notch 12 is greater than the height of the blanking plate 6. Then, when the movable bar 4 drives the blanking plate 6 to rise or fall through the mold rod 5, the blanking plate 6 slides in the notch 12. When the injection molded part is between the fixed mold 1 and the movable mold 2, After the space is opened, the motor 9 is started to work, and the motor 9 drives the bidirectional screw rod 10 to rotate in the slide rail 8, and then the two adjusting frames 11 are driven to move in opposite directions through the bidirectional screw rod 10, and the adjusting frames 11 slide with the slide rail 8, and the notches 12 on the adjusting frames 11 drive the blanking plate 6 to slide on the outer wall of the mold rod 5, so that the blanking plate 6 pushes the auto parts injection-molded on the mold rod 5, and pushes it off the mold rod 5 to realize demoulding and unloading. The overall structure is simple, and the demoulding tooling is concentrated in the mold. There is no need to manually move the mold and then use the tooling for demoulding. It is convenient to use, has high unloading efficiency, and reduces labor.

[0033] A plurality of limiting grooves 13 are provided on both side walls of the fixed mold 1, and a first rack 14 and a second rack 16 are slidably connected in the two limiting grooves 13 on the same side, respectively, and one end of the second rack 16 is fixedly connected to the adjacent side wall of the adjusting frame 11, and a gear 17 is rotatably connected to the side wall of the fixed mold 1, and the first rack 14 and the second rack 16 are oppositely distributed and meshed with the gear 17, and one end of the two first racks 14 is connected to a receiving plate 15, and when the adjusting frame 11 moves to make the blanking plate 6 push the injection molded part off the mold rod 5, the adjusting frame 11 simultaneously drives the second rack 16 to move, and the second rack 16 drives the gear 17 to rotate, and then through the gear The wheel 17 drives the first rack 14 to approach the adjusting frame 11, and the second rack 16 and the first rack 14 slide with the two limiting grooves 13 respectively. The limiting grooves 13 restrict the second rack 16 and the first rack 14 so that they can only move in a straight line. The first rack 14 drives the receiving plate 15 to move between the fixed mold 1 and the movable mold 2, and then catches the injection molded parts pushed down by the mold rod 5. When the adjusting frame 11 drives the unloading plate 6 to move back, the receiving plate 15 brings the injection molded parts that fall above it out from between the fixed mold 1 and the movable mold 2, thereby facilitating the removal of the injection molded parts and avoiding the danger of reaching into between the fixed mold 1 and the movable mold 2 to take out the injection molded parts.

[0034] A through slot 22 is provided on the side of the adjustment frame 11, and the first rack 14 is movably connected to the through slot 22. By making way for the through slot 22, the movable space of the first rack 14 is increased, so that the width of the receiving plate 15 can be set wider to meet the material receiving requirements.

[0035] A rotating rod 18 is penetrated in the middle of the material receiving plate 15, and the two ends of the rotating rod 18 are rotatably connected to the two first racks 14 respectively. Guide sleeves 19 are installed on both sides of the fixed mold 1. The ends of the material receiving plate 15 are rotatably connected to guide rods 20 on both sides, and the guide rods 20 are slidably connected in the guide sleeves 19. The first rack 14 and the guide sleeves 19 are staggered. The part of the guide sleeve 19 located outside the fixed mold 1 is bent upward. The side wall of the guide sleeve 19 is provided with a vent 21, and the rotating rod 18 is movably plugged into the guide sleeve 19 through the vent 21. When a rack 14 drives the receiving plate 15 to move outside the fixed mold 1, the guide rod 20 on the side wall of the receiving plate 15 is guided by the guide sleeve 19 to be bent upward, so that when the receiving plate 15 moves outside the fixed mold 1, the receiving plate 15 will tilt, and then the injection molded parts falling on its surface can slide off, realizing automatic unloading. When the receiving plate 15 moves into the fixed mold 1, the guide rod 20 is guided by the guide sleeve 19 to make the receiving plate 15 rotate to a horizontal level, and the rotating rod 18 is inserted into the guide sleeve 19 through the opening 21, without causing motion interference, thereby facilitating unloading.

[0036] A counterweight bar 24 is fixedly connected to the outward end of the receiving plate 15. The counterweight bar 24 increases the weight of the outer end of the receiving plate 15 so that when the guide rod 20 moves in the guide sleeve 19, the guide rod 20 can always slide in contact with the top wall inside the guide sleeve 19 to ensure that the guide rod 20 will not slip out of the opening 21. When the injection molded part applies weight to one end of the receiving plate 15, the counterweight bar 24 can still be used to tilt it outward to achieve unloading.

[0037] A plurality of convex racks 23 are fixedly connected to the upper surface of the receiving plate 15. The convex racks 23 are located at one end of the receiving plate 15 close to the fixed mold 1. When the plastic parts fall onto the receiving plate 15, the convex racks 23 can be used to increase the friction with the plastic parts, thereby ensuring that the plastic parts can be taken out from between the fixed mold 1 and the movable mold 2.

[0038] Embodiment 2: Based on Embodiment 1, this embodiment proposes a method for using a tooling for processing automobile parts that is easy to demould, and the specific method of using the tooling includes:

[0039] The movable mold 2 descends, and the sleeve frame 72 cooperates with the rectangular block 71 to drive the movable bar 4 to be inserted into the clearance opening 3 of the fixed mold 1 until the movable mold 2 and the fixed mold 1 are closed, and then injection molding is performed;

[0040] After the injection molding is completed, the movable mold 2 rises, and the movable mold 2 is first separated from the injection molded part, and then the sleeve 72 cooperates with the rectangular block 71 to drive the movable bar 4 to move out of the clearance opening 3 of the fixed mold 1. At this time, the injection molded part is separated from the fixed mold 1, and the injection molded part is located in the clearance space between the fixed mold 1 and the movable mold 2;

[0041] The motor 9 is started to work, and the motor 9 drives the two adjustment frames 11 to move in opposite directions through the bidirectional screw rod 10. The adjustment frame 11 drives the blanking plate 6 to move on the outer wall of the mold rod 5 and drives the second rack 16 to move. The blanking plate 6 pushes the injection molded part on the outer wall of the mold rod 5 to be demolded. The second rack 16 drives the gear 17 to rotate, and then the first rack 14 drives the receiving plate 15 to move into the space between the fixed mold 1 and the movable mold 2, until the injection molded part falls from the outer wall of the mold rod 5 and falls on the receiving plate 15;

[0042] At this time, the motor 9 drives the bidirectional screw 10 to reverse, thereby bringing the two adjustment frames 11 closer together, and causing the receiving plate 15 to drive the injection molded parts to move outward from between the fixed mold 1 and the movable mold 2, and the guide rod 20 on the side wall of the receiving plate 15 slides in the guide sleeve 19, and the guide sleeve 19 is bent upward to guide the guide rod 20, and the gravity of the counterweight bar 24 at the end of the receiving plate 15 causes the receiving plate 15 to rotate in an inclined state, and the receiving plate 15 is completely moved to the outside of the fixed mold 1 and the movable mold 2, and the injection molded parts slide on the inclined receiving plate 15, so that the material can be unloaded and injection molding can be carried out again.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tooling for processing automobile parts for easy demoulding, comprising a fixed mold (1) and a movable mold (2), characterized in that: The adjacent surfaces of the fixed mold (1) and the movable mold (2) are provided with a clearance opening (3), a movable bar (4) is installed in the clearance opening (3), a plurality of mold rods (5) are fixedly connected to both sides of the movable bar (4), the outer wall of the mold rod (5) is slidably connected to a blanking plate (6), a lifting unit (7) for lifting the movable bar (4) is installed between the two sides of the movable mold (2) and the movable bar (4), a slide rail (8) is installed on both sides of the fixed mold (1), a motor (9) is installed at one end of the slide rail (8), a bidirectional screw rod (10) is rotatably connected to the output end of the motor (9), the bidirectional screw rod (10) is threadedly connected to two adjustment frames (11), a notch (12) is provided on the adjustment frame (11), and the notch (12) is sleeved on the outer wall of the blanking plate (6).

2. The automotive parts processing tooling for easy demoulding according to claim 1 is characterized in that: The lifting unit (7) comprises a rectangular block (71) fixedly mounted on both ends of the movable bar (4) and a sleeve (72) mounted on the outer wall of the movable mold (2); a rectangular groove (73) is formed on the side wall of the sleeve (72), and the rectangular groove (73) is sleeved on the outer wall of the rectangular block (71).

3. The automotive parts processing tooling for easy demoulding according to claim 1, characterized in that: A plurality of limiting grooves (13) are provided on both side walls of the fixed mold (1), a first rack (14) and a second rack (16) are slidably connected in the two limiting grooves (13) on the same side, one end of the second rack (16) is fixedly connected to the side wall of the adjacent adjustment frame (11), a gear (17) is rotatably connected to the side wall of the fixed mold (1), the first rack (14) and the second rack (16) are oppositely distributed and meshed with the gear (17), and one end of the two first racks (14) is connected to a material receiving plate (15).

4. The automotive parts processing tooling for easy demoulding according to claim 3 is characterized in that: A through slot (22) is provided on the side of the adjustment frame (11), and the first rack (14) is movably plugged into the through slot (22).

5. The automotive parts processing tooling for easy demoulding according to claim 3 is characterized in that: A rotating rod (18) is provided in the middle of the material receiving plate (15), and two ends of the rotating rod (18) are respectively rotatably connected to the two first racks (14). Guide sleeves (19) are installed on both sides of the fixed mold (1). Both ends of the material receiving plate (15) are rotatably connected to guide rods (20), and the guide rods (20) are slidably connected in the guide sleeves (19). The first racks (14) and the guide sleeves (19) are staggered. The part of the guide sleeve (19) located outside the fixed mold (1) is bent upward. A side wall of the guide sleeve (19) is provided with a clearance opening (21), and the rotating rod (18) is movably plugged into the guide sleeve (19) through the clearance opening (21).

6. The automotive parts processing tooling for easy demoulding according to claim 5, characterized in that: A counterweight bar (24) is fixedly connected to one end of the receiving plate (15) facing outwards, and the counterweight bar (24) applies gravity to the receiving plate (15) with the rotating rod (18) as the axis.

7. The automotive parts processing tooling for easy demoulding according to claim 3 is characterized in that: A plurality of convex racks (23) are fixedly connected to the upper surface of the material receiving plate (15), and the convex racks (23) are located at one end of the material receiving plate (15) close to the fixed mold (1).

8. A method for using a tooling for processing automobile parts that facilitates demoulding, characterized in that: The automotive parts processing tooling for easy demoulding according to any one of claims 1 to 7, and the specific use method thereof includes: The movable mold (2) descends, and the sleeve frame (72) cooperates with the rectangular block (71) to drive the movable bar (4) to be inserted into the clearance opening (3) of the fixed mold (1), until the movable mold (2) and the fixed mold (1) are closed, and injection molding is performed at this time; After the injection molding is completed, the movable mold (2) rises, and the movable mold (2) is first separated from the injection molded part, and then the sleeve (72) cooperates with the rectangular block (71) to drive the movable bar (4) to move out from the clearance opening (3) of the fixed mold (1). At this time, the injection molded part is separated from the fixed mold (1), and the injection molded part is located in the clearance space between the fixed mold (1) and the movable mold (2); The motor (9) is started to work, and the motor (9) drives the two adjustment frames (11) to move in opposite directions through the bidirectional screw rod (10), and the adjustment frame (11) drives the blanking plate (6) to move on the outer wall of the mold rod (5) and drives the second rack (16) to move, and the blanking plate (6) pushes the injection molded part on the outer wall of the mold rod (5) to be demoulded, and the second rack (16) drives the gear (17) to rotate, thereby causing the first rack (14) to drive the receiving plate (15) to move into the space between the fixed mold (1) and the movable mold (2), until the injection molded part falls from the outer wall of the mold rod (5) and falls on the receiving plate (15); At this time, the motor (9) drives the bidirectional screw rod (10) to reverse, thereby bringing the two adjustment frames (11) closer together, and causing the receiving plate (15) to drive the injection molded part to move outward from between the fixed mold (1) and the movable mold (2). The guide rod (20) on the side wall of the receiving plate (15) slides in the guide sleeve (19), and the guide sleeve (19) is bent upward to guide the guide rod (20). The weight of the counterweight bar (24) at the end of the receiving plate (15) causes the receiving plate (15) to rotate in an inclined state. The receiving plate (15) is completely moved outside the fixed mold (1) and the movable mold (2), and the injection molded part slides on the inclined receiving plate (15), so that the material can be unloaded and injection molding can be performed again.