Injection mold for producing gearbox cover plate

Abstract

The utility model discloses an injection mold for producing a gear box cover plate, which relates to the technical field of gear box cover plates and comprises an upper mold and a lower mold which are arranged from top to bottom, an upper mold cavity and a lower mold cavity which are communicated are respectively arranged in the upper mold and the lower mold, and an injection molding opening penetrating through the upper mold cavity is arranged at the top of the upper mold. The upper die and the lower die are provided with a cooling mechanism, the cooling mechanism comprises a water cooling cavity and a mounting cavity which are formed in the lower die, the water cooling cavity and the mounting cavity are L-shaped, the water cooling cavity and the mounting cavity are divided into a vertical end and a horizontal end, and the horizontal ends of the water cooling cavity and the mounting cavity are sequentially arranged below the lower die cavity; the vertical end of the water cooling cavity and the vertical end of the mounting cavity are sequentially arranged on one side of the lower die cavity. According to the cooling device, the water cooling cavity, the mounting cavity, the circulating pump and the circulating pipe are arranged, so that a closed-loop cooling water circulating system is formed, cooling water can be uniformly distributed on the inner wall of the water cooling cavity, and the cooling effect is effectively enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box cover plate technical field, concretely is a kind of injection mould for producing gear box cover plate. BACKGROUND

[0002] Injection mould is the important tool indispensable in plastics processing industry, it is obtained by the product required after cooling solidification by molten plastics into mould cavity, in the process of producing gear box cover plate, the cooling effect of injection mould has crucial influence to the quality and production efficiency of product,

[0003] At present, the injection mould for producing gear box cover plate mostly adopts traditional cooling mode, i.e. water cooling, this mode is by setting water channel in mould, injects cooling water into water channel, utilizes the flow of water to take away the heat of mould, to achieve the purpose of cooling, however, this mode exists uneven cooling, low cooling efficiency and other problems, due to the complex structure of gear box cover plate, the shape and size of mould cavity are different, leading to uneven flow of cooling water in mould, part area is cooled too fast, and part area is not cooled enough, to affect the overall performance and dimensional accuracy of product. SUMMARY

[0004] The utility model aims at providing a kind of injection mould for producing gear box cover plate to solve the problems presented in the above background.

[0005] To solve the above technical problems, the utility model provides an injection mould for producing gear box cover plate, which comprises an upper die and a lower die arranged from top to bottom, and a through upper die cavity and a lower die cavity are respectively formed in the upper die and the lower die, an injection port penetrating the upper die cavity is formed in the top of the upper die, and a cooling mechanism is arranged in the upper die and the lower die, which comprises a water cooling cavity and a mounting cavity formed in the lower die;

[0006] The shape of the water cooling cavity and the mounting cavity is "L" type, the water cooling cavity and the mounting cavity are divided into vertical end and horizontal end, the horizontal end of the water cooling cavity and the mounting cavity are sequentially arranged below the lower die cavity, the vertical end of the water cooling cavity and the mounting cavity are sequentially arranged on one side of the lower die cavity, a rotating column is installed in the middle and lower section of the vertical end of the water cooling cavity, one end of the rotating column is rotatably connected with the inner wall of the water cooling cavity, a plurality of annular water bucket type blades are evenly distributed on the outer arc wall of the rotating column, a water injection pipe penetrating the vertical end of the water cooling cavity and the mounting cavity to the outside of the lower die in horizontal direction is installed above the water bucket type blades, a circulating pump is installed on the outer wall of the lower die, one end of the water injection pipe is connected with the circulating pump, a circulating pipe is installed in the mounting cavity, the shape of the circulating pipe is "N" type, one end of the circulating pipe penetrates to the bottom of the water cooling cavity, and the other end of the circulating pipe is connected with the circulating pump.

[0007] Further, the outer arc wall of the rotating column is sleeved with a first belt pulley, the upper die is provided with a wind cooling cavity on one side of the upper die cavity, a horizontal column is installed in the wind cooling cavity, the outer arc wall of the horizontal column is sleeved with a second belt pulley, the lower die is provided with a channel penetrating through the water injection pipe above the vertical end of the water cooling cavity, a belt is arranged in the channel, the first belt pulley and the second belt pulley are drivingly connected through the belt, a driving bevel gear is arranged in the wind cooling cavity, the second belt pulley is fixedly connected with the extension mounting rod of the driving bevel gear, the driving bevel gear is meshingly connected with a driven bevel gear, the driven bevel gear is rotatably connected with a fixed shaft, one end of the fixed shaft is fixedly connected with the inner wall of the wind cooling cavity, and the driven bevel gear is provided with a fan blade.

[0008] Further, the upper die is provided with a plurality of ventilation holes penetrating through the wind cooling cavity on one side.

[0009] Further, the fan blade is provided with a plurality of annularly and equally spaced through holes, and a plurality of spring copper pipes are arranged in the through holes.

[0010] Further, the wind cooling cavity is provided with a heat conduction sheet close to one side of the upper die cavity.

[0011] Further, the vertical end of the water cooling cavity is provided with a cavity door matching the cross section of the vertical end, and a spring hinge is hingedly arranged between the cavity door and the inner wall of the water cooling cavity.

[0012] Further, a switch is arranged on the inner side wall of the water cooling cavity, and a touch block is arranged on the upper surface of the cavity door, and when the cavity door and the vertical end side wall of the water cooling cavity are in a vertical state, the touch block abuts against the switch.

[0013] Further, the switch is electrically connected with the circulating pump.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1、The utility model discloses a water cooling cavity and an installation cavity are arranged, and a circulating pump and a circulating pipe are arranged, forming a closed cooling water circulation system, and cooling water can be uniformly distributed on the inner wall of the water cooling cavity, effectively enhancing the cooling effect, shortening the cooling and solidification time of the gear box cover plate, improving the production efficiency, and the water bucket type blade design makes the cooling water produce rotation and throwing effect when flowing through the water cooling cavity, further improving the uniformity and efficiency of cooling.

[0016] 2. The utility model discloses a further cooling of the mold is carried out through the rotation of the fan blade to produce airflow, the mode that this kind of air cooling and water cooling are combined can take away the heat in the mold more quickly, improve the cooling efficiency, the spring copper pipe on the fan blade not only strengthens the thermal conductivity, but also provides certain damping and stability when the fan blade rotates, guarantee the stable operation of air cooling mechanism, realize the automation control of cooling system through the setting cavity door, touch block and switch, when the water level in the water cooling cavity rises to certain height, the cavity door will close automatically and trigger the switch, start the circulating pump and carry out the circulation of cooling water. This design simplifies the operation process, improves the degree of automation of production. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of production gear box cover plate's injection mould main body's structural schematic diagram;

[0018] Figure 2 It is a kind of production gear box cover plate's injection mould inside sectional view;

[0019] Figure 3 It is Figure 2 The structural schematic diagram of enlarged portion in A of middle;

[0020] Figure 4 It is a kind of production gear box cover plate's injection mould in the structural schematic diagram of wind cooling cavity;

[0021] Figure 5 It is a kind of production gear box cover plate's injection mould in the structural schematic diagram of water bucket type blade;

[0022] Figure 6 It is Figure 4 The structural schematic diagram of enlarged portion in B of middle.

[0023] In the drawing:

[0024] 1, upper die;2, lower die;3, circulating pump;4, circulating pipe;5, ventilation hole;6, injection port;7, water cooling cavity;8, installation cavity;9, upper die cavity;10, lower die cavity;11, air cooling cavity;12, water injection pipe;13, cavity door;14, touch block;15, switch;16, rotating column;17, water bucket type blade;18, heat-conducting sheet;19, fan blade;20, spring copper pipe;21, first pulley;22, second pulley;23, belt;24, driving bevel gear;25, driven bevel gear;26, cross column. DETAILED DESCRIPTION

[0025] With reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, apparently, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the present application.

[0026] Please refer to Figures 1-6 The present application provides a technical solution:

[0027] Please refer to Figure 1 , Figure 2 and Figure 5 An injection mold for producing a gear box cover plate is shown, which comprises an upper mold 1 and a lower mold 2 arranged from top to bottom, an upper mold cavity 9 and a lower mold cavity 10 are respectively formed in the upper mold 1 and the lower mold 2, an injection port 6 is formed in the top of the upper mold 1 and penetrates the upper mold cavity 9, the upper mold 1 and the lower mold 2 are provided with a cooling mechanism, the cooling mechanism comprises a water cooling cavity 7 and a mounting cavity 8 formed in the lower mold 2;

[0028] The shape of the water cooling cavity 7 and the mounting cavity 8 is "L" type, the water cooling cavity 7 and the mounting cavity 8 are divided into vertical end and horizontal end, the horizontal end of the water cooling cavity 7 and the mounting cavity 8 are sequentially arranged below the lower mold cavity 10, the vertical end of the water cooling cavity 7 and the mounting cavity 8 are sequentially arranged on one side of the lower mold cavity 10, the middle and lower section of the vertical end of the water cooling cavity 7 is provided with a rotating column 16, one end of the rotating column 16 is rotatably connected with the inner wall of the water cooling cavity 7, the outer arc wall of the rotating column 16 is provided with a plurality of annular water bucket type blades 17 which are equally spaced, the upper part of the water bucket type blade 17 is provided with a water injection pipe 12 which penetrates the vertical end of the water cooling cavity 7 and the mounting cavity 8 to the outside of the lower mold 2 in horizontal direction, the outer wall of the lower mold 2 is provided with a circulating pump 3, one end of the water injection pipe 12 is connected with the circulating pump 3, the mounting cavity 8 is provided with a circulating pipe 4, the shape of the circulating pipe 4 is "N" type, one end of the circulating pipe 4 penetrates to the bottom of the water cooling cavity 7, the other end of the circulating pipe 4 is connected with the circulating pump 3.

[0029] In the specific implementation process, when the gear box cover plate needs to be produced, first, the molten plastic is injected into the upper mold cavity 9 through the injection port 6, the upper mold 1 and the lower mold 2 are tightly closed, and the plastic is fully filled and cooled and solidified in the mold. Once the plastic is injected and initially solidified, the cooling mechanism starts to work, and the circulating pump 3 starts to inject cooling water into the water cooling cavity 7 through the water injection pipe 12. After the cooling water enters the water cooling cavity 7, it comes into contact with the rotating column 16 and the water bucket-shaped blade 17 thereon installed in the lower section of the vertical section of the water cooling cavity 7. When the water flow impacts the water bucket-shaped blade 17, a rotating torque is generated, thereby driving the rotating column 16 to rotate. When the rotating column 16 rotates, the water bucket-shaped blade 17 thereon will guide the water to the center of the rotating column 16 and then throw it in the tangential direction. The cooling water will be thrown and evenly distributed on the inner wall of the water cooling cavity 7, thereby enhancing the cooling effect. After flowing through the water cooling cavity 7, the cooling water flows into the vertical section of the installation cavity 8 through one end of the circulating pipe 4, then flows along the "∅" shaped path of the circulating pipe 4, and finally returns to the circulating pump 3 through the other end of the circulating pipe 4, thereby forming a closed loop circulation.

[0030] Referring to Figure 2 , Figure 4 and Figure 6 , a first pulley 21 is sleeved on the outer arc wall of the rotating column 16. A wind cooling cavity 11 is formed in one side of the upper mold cavity 9 in the upper mold 1, and a horizontal column 26 is installed in the wind cooling cavity 11. A second pulley 22 is sleeved on the outer arc wall of the horizontal column 26. A channel is formed in the lower mold 2 above the vertical end of the water cooling cavity 7 and penetrates the water injection pipe 12. A belt 23 is arranged in the channel. The first pulley 21 and the second pulley 22 are drivingly connected through the belt 23. A driving bevel gear 24 is arranged in the wind cooling cavity 11. The second pulley 22 is fixedly connected with an extension installation rod of the driving bevel gear 24. The driving bevel gear 24 is in meshing connection with a driven bevel gear 25. A fixed shaft is rotatably connected with the driven bevel gear 25. One end of the fixed shaft is fixedly connected with the inner wall of the wind cooling cavity 11. The driven bevel gear 25 is provided with a fan blade 19. In the specific implementation process, the wind cooling cavity 11 is used for further cooling the mold by the airflow generated by the fan. The horizontal column 26 is installed in the wind cooling cavity 11. The second pulley 22 installed on the horizontal column 26 is drivingly connected with the first pulley 21 through the belt 23. The channel is used for accommodating the belt 23, so that the belt 23 can smoothly transmit power. When the water bucket-shaped blade 17 drives the rotating column 16 to rotate, the first pulley 21 is driven to rotate. When the first pulley 21 drives the second pulley 22 to rotate through the belt 23, the driving bevel gear 24 is driven to rotate. Since the driving bevel gear 24 is in meshing connection with the driven bevel gear 25, when the driven bevel gear 25 rotates, the fan blade 19 is driven to rotate, thereby generating airflow to air cool the mold.

[0031] Referring to Figure 4 and Figure 6As shown, the upper die 1 is provided with a plurality of ventilation holes 5 penetrating the air cooling cavity 11 on one side, and the fan blade 19 is provided with a plurality of annularly and equally spaced through holes, and a plurality of spring copper pipes 20 are installed in the through holes, and the air cooling cavity 11 is installed with a heat conduction sheet 18 on the side close to the upper die cavity 9. In the specific implementation process, the ventilation holes 5 allow the air flow in the air cooling cavity 11 to exchange with the external air, thereby enhancing the cooling effect, the fan blade 19 is provided with a plurality of annularly and equally spaced through holes, and the spring copper pipes 20 are installed in the through holes, the spring copper pipes 20 have good heat conductivity and elasticity, can more effectively transfer heat, and provide certain damping and stability when the fan blade 19 rotates, and the heat conduction sheet 18 is used to quickly transfer the heat in the upper die cavity 9 to the air cooling cavity 11, so as to dissipate heat through the air cooling mechanism.

[0032] As shown in Figure 2 and Figure 3 As shown, the vertical end bottom of the water cooling cavity 7 is installed with a cavity door 13 matched with the cross section thereof, a spring hinge is hinged between the cavity door 13 and the inner wall of the water cooling cavity 7, the inner side wall of the water cooling cavity 7 is installed with a switch 15, the upper surface of the cavity door 13 is installed with a touch block 14, the touch block 14 abuts against the switch 15 when the cavity door 13 and the vertical end side wall of the water cooling cavity 7 are in the vertical state, and the switch 15 is electrically connected with the circulating pump 3. In the specific implementation process, the upper surface of the cavity door 13 is installed with the touch block 14, and in the initial state, the cavity door 13 can be opened and closed downward, when the horizontal end of the water cooling cavity 7 starts to fill with cooling water, with the rising of the water level, the horizontal plane of the cooling water will contact the lower part of the cavity door 13, the density of the cavity door 13 is less than that of water, and it will be affected by the buoyancy and float upward, at this time, the buoyancy of the cavity door 13 is greater than the elastic force of the spring hinge, when the cavity door 13 is completely closed, that is, in the vertical state with the vertical end side wall of the water cooling cavity 7, the touch block 14 on the cavity door 13 will contact the switch 15, trigger the switch 15, and then start the circulating pump 3, the circulating pump 3 will pump the cooling water from one end of the water cooling cavity 7 to the other end, form a circulation, thereby effectively cooling the mold.

[0033] Working principle:

[0034] Step one: first, the molten plastic is injected into the upper mold cavity 9 through the injection port 6, at this time, the upper mold 1 and the lower mold 2 are tightly closed, ensuring that the plastic is fully filled in the mold, once the plastic is injected and initially solidified, the cooling mechanism starts to work, the circulating pump 3 starts to work, and the cooling water is injected into the water cooling cavity 7 through the water injection pipe 12, after the cooling water enters the water cooling cavity 7, it contacts the rotating column 16 and the water bucket type blade 17 on it installed in the middle and lower section of the vertical section of the water cooling cavity 7, when the water flow impacts the water bucket type blade 17, it will generate a rotating torque, thereby driving the rotating column 16 to rotate, when the rotating column 16 rotates, the water bucket type blade 17 on it will guide the water to the center of the rotating column 16, and then throw it in the tangential direction, the cooling water is thrown and evenly distributed on the inner wall of the water cooling cavity 7, enhancing the cooling effect, after the cooling water flows through the water cooling cavity 7, it flows into the vertical section of the installation cavity 8 through one end of the circulating pipe 4, then flows along the "∩" type path of the circulating pipe 4, and finally returns to the circulating pump 3 through the other end of the circulating pipe 4, forming a closed loop circulation.

[0035] Step two: when the water bucket type blade 17 drives the rotating column 16 to rotate, it drives the first pulley 21 to rotate, the first pulley 21 drives the second pulley 22 to rotate through the belt 23, and then drives the driving bevel gear 24 to rotate, since the driving bevel gear 24 is engaged with the driven bevel gear 25, when the driven bevel gear 25 rotates, it drives the fan blade 19 to rotate, thereby generating air flow to cool the mold.

[0036] Step three: when the fan blade 19 rotates, the air flow in the air cooling cavity 11 is allowed to exchange with the external air through the ventilation hole 5, thereby enhancing the cooling effect, the spring copper pipe 20 installed in the through hole of the fan blade 19 has good heat conductivity and elasticity, which can more effectively transfer heat and provide certain damping and stability when the fan blade 19 rotates, the heat conduction sheet 18 quickly transfers the heat in the upper mold cavity 9 to the air cooling cavity 11, so as to dissipate heat through the air cooling mechanism, the cavity door 13 installed at the bottom of the vertical end of the water cooling cavity 7 will be upwardly floated by the buoyancy when the water level rises, when the cavity door 13 is completely closed, that is, the vertical end side wall of the water cooling cavity 7 is in a vertical state, the contact block 14 will contact the switch 15, triggering the switch 15, and then starting the circulating pump 3, ensuring the circulating flow of the cooling water.

Claims

1. An injection mold for producing a gear box cover plate, comprising an upper mold (1) and a lower mold (2) arranged from top to bottom, through upper mold cavities (9) and lower mold cavities (10) are respectively formed in the upper mold (1) and the lower mold (2), and an injection port (6) is formed in the top of the upper mold (1) and penetrates the upper mold cavities (9), characterized in that, The upper die (1) and the lower die (2) are provided with cooling mechanisms, which include water cooling cavities (7) and installation cavities (8) formed in the lower die (2); The water cooling cavities (7) and the installation cavities (8) are in the shape of "L", and are divided into vertical ends and horizontal ends; the horizontal ends of the water cooling cavities (7) and the installation cavities (8) are sequentially arranged below the lower die cavity (10); the vertical ends of the water cooling cavities (7) and the installation cavities (8) are sequentially arranged on one side of the lower die cavity (10); a rotating column (16) is installed on the middle and lower sections of the vertical end of the water cooling cavity (7); one end of the rotating column (16) is rotatably connected with the inner wall of the water cooling cavity (7); a plurality of annular and equally spaced water bucket type blades (17) are installed on the outer arc wall of the rotating column (16); a water injection pipe (12) is installed above the water bucket type blades (17) and penetrates through the vertical end of the water cooling cavity (7) and the installation cavity (8) to the outside of the lower die (2); a circulating pump (3) is installed on the outer wall of the lower die (2); one end of the circulating pump (3) is connected with the water injection pipe (12); a circulating pipe (4) is installed in the installation cavity (8); the circulating pipe (4) is in the shape of "N"; one end of the circulating pipe (4) penetrates to the bottom of the water cooling cavity (7); the other end of the circulating pipe (4) is connected with the circulating pump (3).

2. An injection mold for producing a gear case cover plate according to claim 1, characterized in that: A first belt pulley (21) is sleeved on the outer arc wall of the rotating column (16); a wind cooling cavity (11) is formed in one side of the upper die cavity (9) in the upper die (1); a horizontal column (26) is installed in the wind cooling cavity (11); a second belt pulley (22) is sleeved on the outer arc wall of the horizontal column (26); a channel penetrating through the water injection pipe (12) is formed above the vertical end of the water cooling cavity (7) in the lower die (2); a belt (23) is arranged in the channel; the first belt pulley (21) and the second belt pulley (22) are drivingly connected through the belt (23); a driving bevel gear (24) is arranged in the wind cooling cavity (11); the second belt pulley (22) and the installation rod extended from the driving bevel gear (24) are fixedly connected; a driven bevel gear (25) is meshingly connected with the driving bevel gear (24); a fixed shaft is rotatably connected with the driven bevel gear (25); one end of the fixed shaft is fixedly connected with the inner wall of the wind cooling cavity (11); the driven bevel gear (25) is installed with a fan blade (19).

3. An injection mold for producing a gear case cover plate according to claim 2, characterized in that: A plurality of ventilation holes (5) penetrating through the wind cooling cavity (11) are formed in one side of the upper die (1).

4. A mould for injection moulding a gear box cover plate as claimed in claim 3, characterised in that: The fan blade (19) is formed with a plurality of annular and equally spaced through holes, and a spring copper pipe (20) is installed in the through holes.

5. A mould for injection moulding a gear box cover plate as claimed in claim 4, characterised in that: A heat conduction sheet (18) is installed on one side of the wind cooling cavity (11) close to the upper die cavity (9).

6. An injection mold for producing a gear case cover plate according to claim 5, characterized in that: A cavity door (13) matching the cross section of the vertical end of the water cooling cavity (7) is installed at the bottom of the vertical end of the water cooling cavity (7); a spring hinge is hingedly arranged between the cavity door (13) and the inner wall of the water cooling cavity (7).

7. An injection mold for producing a gear case cover plate according to claim 6, characterized in that: The inner side wall of the water cooling cavity (7) is provided with a switch (15), the upper surface of the cavity door (13) is provided with a touching block (14), when the vertical end side wall of the cavity door (13) and the water cooling cavity (7) are in the vertical state, the touching block (14) abuts against the switch (15).

8. An injection mold for producing a gear case cover plate according to claim 7, characterized in that: The switch (15) is electrically connected with the circulating pump (3).

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