Novel large-modulus high-torque plastic gear injection mold for automobile door driving system

Abstract

The utility model relates to a novel large-modulus high-torque plastic gear injection mold for an automobile door driving system, which comprises a movable mold and a fixed mold, and the movable mold comprises a movable mold seat, a first glue injection template, a second glue injection template and a movable mold core mounting plate which are sequentially connected from top to bottom; the fixed mold comprises a fixed mold base, an ejection mold plate, a cooling mold plate and a fixed mold core mounting plate which are sequentially connected from bottom to top, and the movable mold core mounting plate is located above the fixed mold core mounting plate. Four gears can be formed at a time, and the production efficiency is high; during demolding, the formed gear can be screwed out when the ejector pin moves upwards, and demolding is convenient and fast; after injection molding is completed, the whole mold can be rapidly cooled, meanwhile, cooling water circularly flows around the circumference of the upper portion of the forming gear in the movable mold core and circularly flows around the lower portion of the forming gear in the fixed mold core in a snakelike circumference mode, the forming gear can be evenly cooled, the cooling effect is good, gear deformation or warping is avoided, and the forming quality is good.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, and particularly to a new type of injection mold for large module and high torque plastic gears of an automotive door drive system. Background Art

[0002] The high torque and large module plastic gears used in automotive door drive systems are usually used to realize the electric operation of components such as doors, windows, skylights, and door locks. When designing and manufacturing such gears, precise forming techniques such as injection molding are usually adopted to ensure the geometric accuracy and surface finish of the gears.

[0003] The currently commonly used gear injection molds have the following problems: the limited number of parts formed at one time results in low production efficiency; since the gears are helical gears, demolding is difficult and the gears are easily damaged; the cooling system in the mold cools unevenly, which may cause the gears to deform or warp, affecting the forming quality. Summary of the Invention

[0004] The utility model aims to solve the deficiencies of the prior art and provides a new type of injection mold for large module and high torque plastic gears of an automotive door drive system.

[0005] To achieve the above object, the utility model adopts the following technical solutions: a new type of injection mold for large module and high torque plastic gears of an automotive door drive system, including a moving mold and a fixed mold. The moving mold includes a moving mold base, a first injection template, a second injection template, and a moving mold core mounting plate, which are connected in sequence from top to bottom. The fixed mold includes a fixed mold base, an ejection template, a cooling template, and a fixed mold core mounting plate, which are connected in sequence from bottom to top. The moving mold core mounting plate is located above the fixed mold core mounting plate;

[0006] A glue injection cup is installed at the center of the top of the moving mold base. The inner wall of the bottom outlet of the glue injection cup is wound with a first electric heating tube, and a first cooling pipeline is installed at the inner edge of the moving mold base;

[0007] An X-shaped glue injection box is embedded in the top of the first injection template. The glue injection box is internally provided with an X-shaped flow dividing pipe. The outlet of the glue injection cup is connected to the intersection point of the flow dividing pipe. The end of the flow dividing pipe is provided with a vertical glue injection main pipe. The second electric heating tube is wound along the flow dividing pipe inside the glue injection box. The second cooling pipeline is installed at the inner edge of the first injection template. The third electric heating tube is wound inside the inner wall of the glue injection main pipe;

[0008] A number of glue injection guide sleeves corresponding to the glue injection main pipe are provided inside the second injection template. The glue injection main pipe extends into the glue injection guide sleeves. The third cooling pipeline is installed at the inner edge of the second injection template;

[0009] Inside the moving mold core mounting plate, several moving mold cores corresponding to the injection guide sleeves are installed. A flow distribution plate is installed on the moving mold core. The main injection pipe is connected to the flow distribution plate, and several injection branch pipes are evenly distributed around the bottom circumference of the flow distribution plate. A fourth cooling pipeline is wound inside each moving mold core, and a fifth cooling pipeline is installed at the inner edge of the moving mold core mounting plate;

[0010] Inside the fixed mold core mounting plate, several fixed mold core seats corresponding to the moving mold cores are installed. A fixed mold core is installed on the top of the fixed mold core seat. A gear sleeve is rotatably connected to the top edge of the fixed mold core seat through a bearing. The gaps among the moving mold core, the fixed mold core, and the gear sleeve together form a product cavity. The injection branch pipes are communicated with the product cavity, and a sixth cooling pipeline is installed at the inner edge of the fixed mold core mounting plate;

[0011] Several connecting plates connected to the bottom of the fixed mold core seat are installed on the top of the cooling template. A seventh cooling pipeline extending into the fixed mold core seat is installed on each connecting plate, and an eighth cooling pipeline is installed at the inner edge of the cooling template;

[0012] A pair of ejector plates are slidably arranged up and down inside the ejector template. Several groups of ejector pins corresponding to the fixed mold cores are arranged on the lower ejector plate. The ejector pins penetrate through the fixed mold cores, and a top hole corresponding to the piston rod of the injection molding machine ejector cylinder is arranged at the center of the bottom of the fixed mold base.

[0013] Particularly, an opening die limiting mechanism is arranged between the moving mold and the fixed mold. The opening die limiting mechanism includes a first limiting bolt, a second limiting bolt, and a limiting rod. The first limiting bolt is fixedly connected by threading at both ends of the front and rear sides of the moving mold core mounting plate. The second limiting bolt is fixedly connected by threading at both ends of the front and rear sides of the fixed mold core mounting plate. A strip-shaped first limiting hole is arranged at the upper part of the limiting rod, and a strip-shaped second limiting hole is arranged at the lower part. The first limiting bolt slides along the first limiting hole, and the second limiting bolt slides along the second limiting hole.

[0014] Particularly, a locking module is arranged between the moving mold and the fixed mold. The locking module is fixed on the first injection template and the fixed mold core mounting plate by bolts.

[0015] Particularly, the seventh cooling pipeline includes a water inlet pipe, a water outlet pipe, and a cooling cavity. Several cooling cavities are evenly arranged along the inner edge circumference of the fixed mold core seat. A partition plate is arranged in the middle of the bottom of the cooling cavity, and the partition plate does not contact the top of the cooling cavity. The partition plate divides the cooling cavity into a water inlet cavity and a water outlet cavity. A water guide pipe is connected to the bottom of the adjacent water outlet cavity and water inlet cavity between two cooling cavities. The water inlet pipe is connected to the bottom of the water inlet cavity of the cooling cavity at the starting point of the circumference, the water outlet pipe is connected to the bottom of the water outlet cavity of the cooling cavity at the end point of the circumference, and the water guide pipe and the bottom of the cooling cavity are placed inside the connecting plate.

[0016] Particularly, a guiding mechanism is arranged between the moving mold and the fixed mold.

[0017] The beneficial effects of the present utility model are as follows: The present utility model can form four gears at one time, with high production efficiency; and the gear sleeve is rotationally connected to the fixed mold core seat through a bearing, so that when demolding, the formed gear can be screwed out as the ejector pin moves upward, and the demolding is convenient and fast; by arranging corresponding cooling pipelines on the moving mold base, the first injection template, the second injection template, the moving mold core mounting plate, the fixed mold core mounting plate, and the cooling template, the entire mold can be quickly cooled after injection molding. At the same time, by arranging a fourth cooling pipeline in the moving mold core and a seventh cooling pipeline in the fixed mold core, the cooling water circulates around the upper circumference of the formed gear inside the moving mold core and circulates in a snake-like shape around the lower part of the formed gear inside the fixed mold core, which can uniformly cool the formed gear, with good cooling effect, avoiding gear deformation or warping, and good forming quality. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the mold opening limit mechanism and the locking module of the present utility model;

[0020] Figure 3 is a schematic internal structure diagram of the moving mold base of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the first injection template of the present utility model;

[0022] Figure 5 is Figure 4 the right view of the structure shown;

[0023] Figure 6 is Figure 5 the A-A cross-sectional view in

[0024] Figure 7 is Figure 5 the B-B cross-sectional view in

[0025] Figure 8 is Figure 5 the C-C cross-sectional view in

[0026] Figure 9 is a schematic diagram of the position of the third electric heating tube of the present utility model;

[0027] Figure 10 is a schematic internal structure diagram of the second injection template of the present utility model;

[0028] Figure 11 is a schematic structural diagram of the moving mold core mounting plate of the present utility model;

[0029] Figure 12 is a schematic internal structure diagram of the moving mold core mounting plate of the present utility model;

[0030] Figure 13 is Figure 12 the top view of the structure shown;

[0031] Figure 14 is Figure 13 the sectional view taken along line D-D in;

[0032] Figure 15 is the schematic structural view of the fixed mold core mounting plate of the present utility model;

[0033] Figure 16 is the schematic internal structural view of the fixed mold core mounting plate of the present utility model;

[0034] Figure 17 is the schematic internal structural view of the cooling template of the present utility model;

[0035] Figure 18 is the schematic internal structural view of the ejector template of the present utility model;

[0036] Figure 19 is Figure 18 the enlarged view at position E in;

[0037] Figure 20 is the schematic bottom structural view of the fixed mold base of the present utility model;

[0038] In the figure:

[0039] 1 - moving mold;

[0040] 11 - fixed mold; 1101 - glue injection cup; 1102 - first electric heating tube; 1103 - first cooling pipeline;

[0041] 12 - first glue injection template; 1201 - glue injection box; 1202 - shunt pipe; 1203 - main glue injection pipe; 1204 - second electric heating tube; 1205 - second cooling pipeline; 1206 - third electric heating tube;

[0042] 13 - second glue injection template; 1301 - glue injection guide sleeve; 1302 - third cooling pipeline;

[0043] 14 - moving mold core mounting plate; 1401 - moving mold core; 1402 - shunt plate; 1403 - glue injection branch pipe; 1404 - fourth cooling pipeline; 1405 - fifth cooling pipeline;

[0044] 2 - fixed mold;

[0045] 21 - fixed mold base; 2101 - ejection hole;

[0046] 22 - ejector template; 2201 - ejector plate; 2202 - ejector pin;

[0047] 23 - Cooling template; 2301 - Connection plate; 2302 - Seventh cooling pipeline; 23021 - Water inlet pipe; 23022 - Water outlet pipe; 23023 - Cooling cavity; 23024 - Partition board; 23025 - Water guide pipe; 2303 - Eighth cooling pipeline;

[0048] 24 - Fixed mold core mounting plate; 2401 - Fixed mold core seat; 2402 - Fixed mold core; 2403 - Gear sleeve; 2404 - Sixth cooling pipeline;

[0049] 3 - Mold opening limit mechanism; 31 - First limit bolt; 32 - Second limit bolt; 33 - Limit rod; 34 - First limit hole; 35 - Second limit hole;

[0050] 4 - Lock module;

[0051] The following will be described in detail with reference to the accompanying drawings in conjunction with the embodiments of the present invention. Detailed implementation manners

[0052] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0053] As Figure 1 shown, a large - module and high - torque plastic gear injection mold for a new - type automotive door drive system includes a moving mold 1 and a fixed mold 2. The moving mold 1 includes a moving mold base 11, a first injection - glue template 12, a second injection - glue template 13, and a moving mold core mounting plate 14 connected in sequence from top to bottom. The fixed mold 2 includes a fixed mold base 21, an ejection template 22, a cooling template 23, and a fixed mold core mounting plate 24 connected in sequence from bottom to top. The moving mold core mounting plate 14 is located above the fixed mold core mounting plate 24.

[0054] As Figure 3 shown, a glue injection cup 1101 is installed at the center of the top of the moving mold base 11. A first electric heating tube 1102 is wound around the inner wall of the bottom outlet of the glue injection cup 1101. A first cooling pipeline 1103 is installed at the inner edge of the moving mold base 11.

[0055] As Figures 4 - 9 shown, an X - shaped glue injection box 1201 is embedded in the top of the first injection - glue template 12. An X - shaped shunt pipe 1202 is arranged inside the glue injection box 1201. The outlet of the glue injection cup 1101 is connected to the intersection point of the shunt pipe 1202. A vertical glue injection main pipe 1203 is arranged at the end of the shunt pipe 1202. A second electric heating tube 1204 is wound around the shunt pipe 1202 inside the glue injection box 1201. A second cooling pipeline 1205 is installed at the inner edge of the first injection - glue template 12. A third electric heating tube 1206 is wound around the inner wall of the glue injection main pipe 1203.

[0056] As Figure 10As shown, inside the second glue injection template 13, there are several glue injection guide sleeves 1301 corresponding to the main glue injection pipe 1203. The main glue injection pipe 1203 extends into the glue injection guide sleeve 1301, and a third cooling pipe 1302 is installed at the inner edge of the second glue injection template 13.

[0057] Specifically, during glue injection, the glue enters through the glue injection cup 1101, and then is divided into four paths through the shunt pipe 1202 and enters the corresponding main glue injection pipe 1203. During this period, the first electric heating pipe 1102, the second electric heating pipe 1204, and the third electric heating pipe 1206 are energized for heating to prevent the glue from condensing.

[0058] As Figures 11 - 14 shown, inside the moving die core mounting plate 14, there are several moving die cores 1401 corresponding to the glue injection guide sleeves 1301. A shunt plate 1402 is installed on the moving die core 1401. The main glue injection pipe 1203 is connected to the shunt plate 1402, and several glue injection branch pipes 1403 are evenly distributed around the bottom circumference of the shunt plate 1402. The number of glue injection branch pipes 1403 can be 6. A fourth cooling pipeline 1404 is wound inside each moving die core 1401, and a fifth cooling pipeline 1405 is installed at the inner edge of the moving die core mounting plate 14.

[0059] Specifically, the glue enters the shunt plate 1402 through the main glue injection pipe 1203, and then is divided into 6 paths through the glue injection branch pipes 1403 to inject glue into the product cavity. The glue and the central shaft of the gear are integrally formed.

[0060] As Figures 14 - 16 shown, inside the fixed die core mounting plate 24, there are several fixed die core seats 2401 corresponding to the moving die cores 1401. A fixed die core 2402 is installed on the top of the fixed die core seat 2401. A gear sleeve 2403 is rotatably connected to the top edge of the fixed die core seat 2401 through a bearing. The gaps between the moving die core 1401, the fixed die core 2402, and the gear sleeve 2403 together form the product cavity. The glue injection branch pipes 1403 are communicated with the product cavity, and a sixth cooling pipeline 2404 is installed at the inner edge of the fixed die core mounting plate 24.

[0061] Specifically, during demolding, the ejector plate 2201 drives the ejector pin 2202 to move upward. The top of the ejector pin 2202 penetrates through the fixed die core 2402 to eject the formed gear. During the gear ejection process, the gear sleeve 2403 rotates, and then the gear is screwed out, and then it can be taken away.

[0062] As Figures 17 - 19As shown in the figure, several connecting plates 2301 connected to the bottom of the fixed mold core seat 2401 are installed on the top of the cooling template 23. A seventh cooling pipeline 2302 extending into the fixed mold core seat 2401 is installed on each connecting plate 2301, and an eighth cooling pipeline 2303 is installed on the inner edge of the cooling template 23. The seventh cooling pipeline 2302 includes a water inlet pipe 23021, a water outlet pipe 23022, and a cooling cavity 23023. A number of cooling cavities 23023 are evenly distributed along the circumference of the inner edge of the fixed mold core seat 2401. A partition plate 23024 is provided in the middle of the inner bottom of the cooling cavity 23023, and the partition plate 23024 does not contact the inner top of the cooling cavity 23023. The partition plate 23024 divides the cooling cavity 23023 into a water inlet cavity and a water outlet cavity. A water guide pipe 23025 is connected to the bottoms of the adjacent water outlet cavity and water inlet cavity between two cooling cavities 23023. The water inlet pipe 23021 is connected to the bottom of the water inlet cavity of the cooling cavity 23023 at the starting point of the circumference, the water outlet pipe 23022 is connected to the bottom of the water outlet cavity of the cooling cavity 23023 at the end point of the circumference, and the water guide pipe 23025 and the bottom of the cooling cavity 23023 are placed inside the connecting plate 2301. During cooling, the cooling water flows in a serpentine shape along the cooling cavity 23023 and the water guide pipe 23025, cooling the molded gear fully and evenly.

[0063] As Figure 18 , Figure 20 As shown in the figure, a pair of ejector plates 2201 are slidably arranged up and down inside the ejector template 22. A number of sets of ejector pins 2202 corresponding to the fixed mold core are provided on the lower ejector plate 2201. The ejector pins 2202 penetrate the fixed mold core 2402, and a top hole 2101 corresponding to the piston rod of the injection molding machine ejector cylinder is provided at the center of the bottom of the fixed mold base 21.

[0064] As Figure 2 As shown in the figure, an opening die limiting mechanism 3 is provided between the moving mold 1 and the fixed mold 2. The opening die limiting mechanism 3 includes a first limiting bolt 31, a second limiting bolt 32, and a limiting rod 33. The first limiting bolt 31 is threadedly connected and fixed at both ends of the front and rear sides of the moving mold core mounting plate 14. The second limiting bolt 32 is threadedly connected and fixed at both ends of the front and rear sides of the fixed mold core mounting plate 24. A strip-shaped first limiting hole 34 is provided in the upper part of the limiting rod 33, and a strip-shaped second limiting hole 35 is provided in the lower part. The first limiting bolt 31 slides along the first limiting hole 34, and the second limiting bolt 32 slides along the second limiting hole 35.

[0065] As Figure 2 As shown in the figure, a locking module 4 is provided between the moving mold 1 and the fixed mold 2. The locking module 4 is fixed on the first glue injection template 12 and the fixed mold core mounting plate 24 by bolts.

[0066] A guiding mechanism is provided between the moving mold 1 and the fixed mold 2.

[0067] When the utility model works, glue is injected into the glue injection cup 1101. The glue liquid sequentially passes through the shunt pipe 1202, the main glue injection pipe 1203, the shunt plate 1402, and the sub-glue injection pipes 1403 to enter the product cavity. After the glue injection is completed, cooling water flows in each cooling pipeline to start cooling. After the cooling is completed, the mold is opened. The air cylinder of the injection molding machine drives the ejector plate 2201 to move upward, and the ejector pin 2202 pushes the gear upward. At this time, the gear sleeve 2403 is forced to rotate, and then the gear is screwed out and can be taken away.

[0068] The utility model can form four gears at one time, with high production efficiency. And the gear sleeve 2403 is rotationally connected to the fixed mold core seat 2401 through a bearing, so that when demolding, the formed gear can be screwed out as the ejector pin 2202 moves upward, and the demolding is convenient and fast. By arranging corresponding cooling pipelines on the moving mold base 11, the first glue injection template 12, the second glue injection template 13, the moving mold core mounting plate 14, the fixed mold core mounting plate 24, and the cooling template 23, the whole mold can be quickly cooled after injection molding. At the same time, by arranging a fourth cooling pipeline 1404 in the moving mold core 1401 and a seventh cooling pipeline 2302 in the fixed mold core 2402, the cooling water circulates around the upper circumference of the formed gear inside the moving mold core 1401 and circulates in a serpentine shape around the lower part of the formed gear inside the fixed mold core 2402, which can uniformly cool the formed gear, with good cooling effect, avoid gear deformation or warping, and have good forming quality.

[0069] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0070] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0071] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0072] The above has described the present utility model by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A new type of large modulus and high torque plastic gear injection mold for automobile door drive system, comprising a movable mold (1) and a fixed mold (2), characterized in that: The movable mold (1) comprises a movable mold base (11), a first glue injection template (12), a second glue injection template (13), and a movable mold core mounting plate (14) which are connected in sequence from top to bottom; the fixed mold (2) comprises a fixed mold base (21), an ejection template (22), a cooling template (23), and a fixed mold core mounting plate (24) which are connected in sequence from bottom to top; the movable mold core mounting plate (14) is located above the fixed mold core mounting plate (24); A glue injection cup (1101) is installed at the top center of the movable mold base (11), a first electric heating tube (1102) is wound around the inner wall of the bottom outlet of the glue injection cup (1101), and a first cooling pipeline (1103) is installed at the inner edge of the movable mold base (11); An X-shaped glue injection box (1201) is embedded in the top of the first glue injection template (12), an X-shaped shunt pipe (1202) is arranged inside the glue injection box (1201), the outlet of the glue injection cup (1101) is connected to the intersection of the shunt pipe (1202), a vertical glue injection main pipe (1203) is arranged at the end of the shunt pipe (1202), a second electric heating pipe (1204) is arranged around the shunt pipe (1202) inside the glue injection box (1201), a second cooling pipeline (1205) is installed on the inner edge of the first glue injection template (12), and a third electric heating pipe (1206) is arranged around the inner wall of the glue injection main pipe (1203); A plurality of glue injection guide sleeves (1301) corresponding to the glue injection main pipes (1203) are arranged inside the second glue injection template (13), the glue injection main pipes (1203) extend into the glue injection guide sleeves (1301), and a third cooling pipe (1302) is installed on the inner edge of the second glue injection template (13); A plurality of movable mold cores (1401) corresponding to the injection guide sleeves (1301) are installed inside the movable mold core installation plate (14); a diverter plate (1402) is installed on the movable mold core (1401); the injection main pipe (1203) is connected to the diverter plate (1402); and a plurality of injection branch pipes (1403) are evenly distributed on the circumference of the bottom of the diverter plate (1402); a fourth cooling pipeline (1404) is wound around the inside of each movable mold core (1401); and a fifth cooling pipeline (1405) is installed on the inner edge of the movable mold core installation plate (14); A plurality of fixed mold core seats (2401) corresponding to the movable mold core (1401) are installed inside the fixed mold core installation plate (24); a fixed mold core (2402) is installed on the top of the fixed mold core seat (2401); a gear sleeve (2403) is rotatably connected to the top edge of the fixed mold core seat (2401) via a bearing; the gaps between the movable mold core (1401), the fixed mold core (2402) and the gear sleeve (2403) together form a product cavity; the glue injection branch pipe (1403) is connected to the product cavity; and a sixth cooling pipeline (2404) is installed on the inner edge of the fixed mold core installation plate (24); A plurality of connecting plates (2301) connected to the bottom of the fixed mold core seat (2401) are installed on the top of the cooling template (23), and a seventh cooling pipeline (2302) extending into the fixed mold core seat (2401) is installed on each connecting plate (2301), and an eighth cooling pipeline (2303) is installed on the inner edge of the cooling template (23); A pair of ejector plates (2201) are provided inside the ejector template (22) for sliding up and down, and a plurality of groups of ejector pins (2202) corresponding to the fixed mold core are provided on the lower ejector plate (2201), and the ejector pins (2202) penetrate the fixed mold core (2402), and an ejection hole (2101) corresponding to the piston rod of the ejection cylinder of the injection molding machine is provided at the bottom center of the fixed mold base (21).

2. According to claim 1, a new type of large modulus and high torque plastic gear injection mold for automobile door drive system, characterized in that: A mold opening limiting mechanism (3) is provided between the movable mold (1) and the fixed mold (2), and the mold opening limiting mechanism (3) comprises a first limiting bolt (31), a second limiting bolt (32), and a limiting rod (33), wherein the first limiting bolt (31) is threadedly connected and fixed at both ends of the front and rear sides of the movable mold core mounting plate (14), and the second limiting bolt (32) is threadedly connected and fixed at both ends of the front and rear sides of the fixed mold core mounting plate (24), and the limiting rod (33) is provided with a first strip-shaped limiting hole (34) at the upper part and a second strip-shaped limiting hole (35) at the lower part, and the first limiting bolt (31) slides along the first limiting hole (34), and the second limiting bolt (32) slides along the second limiting hole (35).

3. According to claim 1, a new type of large modulus and high torque plastic gear injection mold for automobile door drive system, characterized in that: A locking module (4) is provided between the movable mold (1) and the fixed mold (2), and the locking module (4) is fixed to the first glue injection mold plate (12) and the fixed mold core mounting plate (24) by means of bolts.

4. The new type of large modulus and high torque plastic gear injection mold for automobile door drive system according to claim 1 is characterized in that: The seventh cooling pipeline (2302) includes a water inlet pipe (23021), a water outlet pipe (23022), and a cooling cavity (23023). The plurality of cooling cavities (23023) are evenly distributed along the circumference of the inner edge of the fixed mold core seat (2401). A partition (23024) is provided in the middle of the bottom of the cooling cavity (23023), and the partition (23024) is not in contact with the top of the cooling cavity (23023). The partition (23024) divides the cooling cavity (23023) into The water inlet cavity and the water outlet cavity, the water outlet cavity and the bottom of the water inlet cavity adjacent to each other between the two cooling cavities (23023) are connected with a water guide pipe (23025); the water inlet pipe (23021) is connected to the bottom of the water inlet cavity of the cooling cavity (23023) located at the starting point of the circle; the water outlet pipe (23022) is connected to the bottom of the water outlet cavity of the cooling cavity (23023) located at the end point of the circle; the water guide pipe (23025) and the bottom of the cooling cavity (23023) are placed in the connecting plate (2301).

5. The new type of large modulus and high torque plastic gear injection mold for automobile door drive system according to claim 1 is characterized in that: A guide mechanism is provided between the movable mold (1) and the fixed mold (2).

Images