Demolding mechanism of air conditioner air duct injection mold

Abstract

The invention relates to the technical field of injection molding equipment, and discloses an air conditioner air duct injection mold demolding mechanism which comprises a supporting frame, a machining part is fixedly connected to one side of the top of the supporting frame, a feeding hopper is fixedly connected to the top of the machining part, a conveying pipe is fixedly connected to one side of the machining part, and a lower mold is fixedly connected to one end of the conveying pipe. A fixing plate is fixedly connected to one side of the top of the supporting frame, a driving motor is fixedly connected to one side of the fixing plate, an output rod is fixedly connected to the output end of the driving motor, a middle mold core is fixedly connected to one side of the lower mold, an upper mold is fixedly connected to one end of the output rod, and a storage box is fixedly connected to the top of the lower mold; demolding oil is stored in the storage box, and the bottom of the storage box is fixedly connected with a roller coating assembly; a control assembly is fixedly connected into the storage box, and knocking assemblies are fixedly connected to the two sides of the middle mold core. Compared with the prior art, the production efficiency and the product quality are improved, and the advantages of energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to a demoulding mechanism of an injection molding mold for an air conditioning duct. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained. Injection molds in the prior art, such as injection molds for air conditioner shells, are mostly composed of three major parts: an upper mold, a lower mold, and a middle mold core fixed in the inner cavity of the lower mold. The middle mold core is used to form the inner groove of the part, and a casting runner is provided on the upper mold.

[0003] In the prior art, a Chinese patent document with publication number CN220008573U proposes an injection mold demolding structure, including a support bracket for support, a guide slide shaft is arranged near the top of the inner end surface of the support bracket, and a bidirectional screw rod is rotatably connected to the inner end surface of the support bracket parallel to the guide slide shaft. By setting up a material guiding device, when the injection molded parts are processed uninterruptedly, the servo motor can synchronously drive the two groups of injection molding devices to perform centripetal and centrifugal displacements through the bidirectional screw, so that the two groups of injection molding devices can be quickly and accurately aligned to the side of the injection mold, thereby improving the stability of the injection molding. At the same time, the swing cylinder can flip the two groups of injection molds after the injection molding is completed, so that the equipment can quickly unload the injection mold at the bottom while maintaining the injection molding efficiency, thereby improving the equipment's processing efficiency for injection molded parts. However, in actual use, when the injection mold is processed, the surface of the injection mold will be coated with a material that is easy to demold, such as demolding oil, etc. Uneven application of demolding oil can easily make the demolding process more difficult. During the separation of the mold, the molded material is easy to stick to the inner cavity of the mold and is difficult to fall automatically. The material needs to be removed manually, thereby reducing the efficiency of the injection molding. Therefore, the present application discloses a demolding mechanism for an air-conditioning duct injection mold to meet the needs of improving the smoothness of injection demolding and improving the molding quality of the product. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a demolding mechanism for an air-conditioning duct injection mold, which has the advantages of improving the uniform distribution of demolding oil, improving demolding efficiency and finished product quality, and solves a series of problems in which, during the mold separation process, the molded material easily adheres to the inner cavity of the mold and is difficult to fall automatically, requiring manual removal of the material, thereby reducing the efficiency of injection molding.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a demoulding mechanism for an injection mold of an air conditioning duct, comprising a support frame, a processing portion is fixedly connected to one side of the top of the support frame, a feed hopper is fixedly connected to the top of the processing portion, a driving motor is fixedly connected to one side of the processing portion, a conveying pipe is fixedly connected to one side of the processing portion, a lower mold is fixedly connected to one end of the conveying pipe, the lower mold is fixedly connected to the top of the support frame, a fixing plate is fixedly connected to one side of the top of the support frame, a driving motor is fixedly connected to one side of the fixing plate, and an output end of the driving motor is fixedly connected to An output rod is connected, one side of the lower mold is fixedly connected to the middle mold core, one end of the output rod is fixedly connected to the upper mold, the top of the lower mold is fixedly connected to a storage box, demoulding oil is stored in the storage box, and the bottom of the storage box is fixedly connected to a roller coating component; a group of control components are fixedly connected in the storage box, and knocking components are fixedly connected on both sides of the middle mold core; the rolling coating component is used to evenly roll-coat the surface of the middle mold core; the control component is used to control the amount of demoulding oil dripping in the storage box; the knocking component is used to knock on the surface of the middle mold core.

[0006] Preferably, the roller coating assembly includes a first guide rod fixedly connected to the bottom of the storage box, the first guide rod is a telescopic structure, the top of the first guide rod is fixedly connected to a limiting plate, a return spring is fixedly sleeved on the first guide rod, one end of the return spring is fixedly connected to the first guide rod, the other end of the return spring is fixedly connected to the limiting plate, one end of the return spring is rotatably connected to a rotating rod, a plurality of groups of second guide rods are fixedly connected to the rotating rod, the second guide rod is a telescopic structure, one end of the second guide rod is fixedly connected to an applicator plate, a compression spring is fixedly sleeved on the second guide rod, one end of the compression spring is fixedly connected to one side of the applicator plate, and the other end of the compression spring is fixedly connected to the rotating rod.

[0007] Preferably, the control component includes a fixed seat fixedly connected to the storage box, a rotating column is rotatably connected to the fixed seat, a driving gear is fixedly connected to the rotating column, one end of the driving gear is fixedly connected to a closing plate, one end of the driving gear is meshed with a driving ring, the driving ring is fixedly connected to a lifting rod, a contact head is fixedly connected to the bottom of the lifting rod, the lifting rod is slidably connected in a fixed tube, the fixed tube passes through the storage box, and a counterweight is fixedly connected to the top of the lifting rod.

[0008] Preferably, the knocking assembly includes a group of connecting plates fixedly connected to one side of the middle mold core, a connecting rod is rotatably connected in the connecting plate, a plurality of limit rings are fixedly connected to the connecting rod, a threaded rod is fixedly connected in the limit ring, a rotating ring is threadedly sleeved on the threaded rod, one end of the rotating ring is fixedly connected to a connecting arm, and one end of the connecting arm is fixedly connected to a collision block.

[0009] Preferably, one end of the limiting plate is fixedly connected to a driving plate, the driving plate is an arc-shaped structure inclined to one side, one end of the upper mold is provided with a contact plate, one side of the contact plate is an arc-shaped structure, and the contact plate is in contact with the driving plate.

[0010] Preferably, a collecting frame is provided at the bottom of the supporting frame, and the collecting frame is provided at the bottom of the fixing plate.

[0011] Preferably, both sides of the upper mold are fixedly connected with connecting blocks, one end of the connecting block is fixedly connected with a driving rack, both sides of the lower mold are fixedly connected with limiting plates, the driving rack is slidably connected in the limiting plates, and the connecting rod is fixedly connected with a rotating gear, which is meshed with the driving rack.

[0012] Preferably, a plurality of contact grooves are provided on the surface of the collision block, and the collision block contacts one side of the surface of the middle mold core.

[0013] Preferably, the threaded rod is a reciprocating double thread structure.

[0014] Preferably, the smear plate fits the surface of the middle mold core, and a plurality of flow grooves are provided on the surface of the smear plate.

[0015] Compared with the prior art, the present invention provides a demoulding mechanism for an air conditioning duct injection mold, which has the following beneficial effects: 1. The demoulding mechanism of the air conditioning duct injection mold, when the air conditioning duct injection mold is demoulded, when the output rod pushes the upper mold toward the lower mold, the contact plate and the driving plate are released, and the driving plate is continuously squeezed and pushed by the contact plate. At the same time, the driving plate is an arc inclined to one side, so that the driving plate drives the limit plate to rise, so that the first guide rod shrinks under the elastic force of the reset spring, and drives the rotating rod to rise synchronously, so that the smear plate can rise to the bottom of the storage box and contact with the control component. At the same time, after the single injection molding is completed, the contact plate is separated from the driving plate, and the first guide rod can be extended and retracted under the elastic force of the reset spring and the gravity of the rotating rod itself. At the same time, the elastic force of the compression spring is guided by the second guide rod, so that the smear plate is in close contact with the surface of the middle mold core, so that the smear plate evenly applies the demoulding oil on the surface of the middle mold core, so that each time the air conditioning duct injection mold is processed, the demoulding oil can be applied before processing, thereby effectively improving the uniform distribution of the demoulding oil, improving the demoulding efficiency and the quality of the finished product.

[0016] 2. The demoulding mechanism of the injection mold for the air-conditioning duct is such that when the smear plate rises to the highest point, that is, when the smear plate rises to the position in contact with the bottom of the storage box, the smear plate first contacts the contact head, thereby driving the lifting rod to rise in the fixed tube, and at the same time, the driving ring fixedly connected to the lifting rod rises synchronously, so that the driving gear meshing with the driving ring rotates around the axis of the rotating column, and at the same time, the closing plate rotates synchronously around the axis of the rotating column, so that the demoulding oil in the storage box drips onto the surface of the smear plate, ensuring precise control of the demoulding oil. At the same time, when the smear plate is separated from the contact head, the weight of the counterweight block enables the lifting rod to move along the fixed tube, and at the same time drives the driving gear to rotate synchronously in the opposite direction around the axis of the rotating column, so that the closing plate fits the storage box, avoiding leakage of demoulding oil, thereby improving production efficiency and product quality.

[0017] 3. The demoulding mechanism of the injection mold for the air conditioning duct can drive the connecting block to move simultaneously during the separation of the upper mold from the lower mold, and at the same time drive the driving rack fixed to it to move to one side in the limit plate, thereby driving the rotating gear meshing with the driving rack to rotate. When the rotating gear rotates, the connecting rod is driven to rotate simultaneously, thereby causing the threaded rod to rotate simultaneously. When the threaded rod rotates, the threaded rod is a reciprocating double-thread structure, so that the rotating ring on the threaded rod reciprocates on the threaded rod, and at the same time, the rotating ring can rotate while the rotating ring rotates. The collision block is in contact with the surface of the middle mold core. When the rotating ring completes a reciprocating path on the threaded rod, the collision block completes a collision with the surface of the middle mold core. Therefore, after the collision block completes the collision contact with the surface of the middle mold core, it continues to complete the reset of the initial position under the drive of the rotating ring, thereby realizing reciprocating collision and knocking on the surface of the middle mold core, thereby completing multi-level precise knocking on the middle mold core, which helps to promote the smooth demolding of the injection mold, improves the demolding success rate, reduces the occurrence of adhesion during the processing and use of the injection mold, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle; Figure 3 This is a schematic diagram of the three-dimensional structure of the storage box of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the roller coating assembly of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the smear plate of the present invention; Figure 6 This is a schematic diagram of the internal three-dimensional structure of the storage box of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the control component of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the striking component of the present invention.

[0019] In the figure: 1, support frame; 2, processing part; 3, feed hopper; 4, conveying pipe; 5, fixed plate; 6, lower mold; 7, upper mold; 8, collecting frame; 9, output rod; 10, contact plate; 11, middle mold core; 12, storage box; 13, first guide rod; 14, return spring; 15, limit plate; 16, driving plate; 17, rotating rod; 18, second guide rod; 19, compression spring; 20, smear plate; 21, fixed Fixed seat; 22, rotating column; 23, driving gear; 24, closing plate; 25, fixed tube; 26, lifting rod; 27, contact head; 28, driving ring; 29, counterweight block; 30, connecting plate; 31, connecting rod; 32, limiting ring; 33, threaded rod; 34, rotating ring; 35, connecting arm; 36, collision block; 37, contact groove; 38, connecting block; 39, driving rack; 40, limiting plate; 41, rotating gear. DETAILED DESCRIPTION

[0020] 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 field without creative work are within the scope of protection of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a demoulding mechanism for an air conditioning duct injection mold.

[0022] In a typical implementation of the present application, Figure 1-Figure 8As shown, a demoulding mechanism of an air conditioning duct injection mold comprises a support frame 1, a processing part 2 is fixedly connected to one side of the top of the support frame 1, a feed hopper 3 is fixedly connected to the top of the processing part 2, a driving motor is fixedly connected to one side of the processing part 2, and the driving motor is used to drive the processing part 2 to work, which is the prior art, a conveying pipe 4 is fixedly connected to one side of the processing part 2, one end of the conveying pipe 4 is fixedly connected to a lower mold 6, the lower mold 6 is fixedly connected to the top of the support frame 1, a fixing plate 5 is fixedly connected to one side of the top of the support frame 1, a driving motor is fixedly connected to one side of the fixing plate 5, an output end of the driving motor is fixedly connected to an output rod 9, a middle mold core 11 is fixedly connected to one side of the lower mold 6, and an upper mold 7 is fixedly connected to one end of the output rod 9. The above structure is the prior art and will not be repeated here. A storage box 12 is fixedly connected to the top of the lower mold 6, demoulding oil is stored in the storage box 12, and a roller coating assembly is fixedly connected to the bottom of the storage box 12; a group of control components are fixedly connected to the storage box 12, and knocking components are fixedly connected to both sides of the middle mold core 11; roller coating The component is used for uniformly rolling coating on the surface of the middle mold core 11; the control component is used for controlling the amount of demoulding oil dripping in the storage box 12; the knocking component is used for knocking on the surface of the middle mold core 11, and a collecting frame 8 is provided at the bottom of the support frame 1, and the collecting frame 8 is provided at the bottom of the fixed plate 5, and a blanking port is provided on the surface of the support frame 1 corresponding to the collecting frame 8; when the demoulding mechanism of the air-conditioning duct injection mold is used, the raw material enters the processing part 2 through the feed hopper 3, and the raw material is transported to the lower mold 6 through the processing part 2 and the conveying pipe 4, and the lower mold 6 and the upper mold 7 are driven by the output rod 9 to approach each other so as to perform injection molding on the raw material. At the same time, the uniform coating of the rolling component and the precise control of the control component ensure the appropriate use of demoulding oil, reduce costs, and reduce pollution to the environment. In addition, the auxiliary role of the knocking component makes the product demoulding smoother and improves the molding quality of the product. The molded product is taken out from the lower mold 6 and collected in the collecting frame 8, which not only improves the production efficiency and product quality, but also has the advantages of energy saving and environmental protection.

[0023] As a preferred implementation in this embodiment, refer to the attached Figure 1-Figure 6The roller coating assembly includes a first guide rod 13 fixedly connected to the bottom of the storage box 12, the first guide rod 13 is a retractable structure, the top of the first guide rod 13 is fixedly connected to a limiting plate 15, a reset spring 14 is fixedly sleeved on the first guide rod 13, one end of the reset spring 14 is fixedly connected to the first guide rod 13, the other end of the reset spring 14 is fixedly connected to the limiting plate 15, one end of the reset spring 14 is rotatably connected to a rotating rod 17, and a plurality of groups of second guide rods 18 are fixedly connected to the rotating rod 17, the second guide rod 18 is a retractable structure, and the second guide rod 18 is fixedly connected to the limiting plate 15. One end is fixedly connected with a smear plate 20, which fits with the surface of the middle mold core 11, and a plurality of flow grooves are provided on the surface of the smear plate 20. A compression spring 19 is fixedly sleeved on the second guide rod 18, and one end of the compression spring 19 is fixedly connected to one side of the smear plate 20, and the other end of the compression spring 19 is fixedly connected to the rotating rod 17. One end of the limit plate 15 is fixedly connected with a driving plate 16, and the driving plate 16 is an arc-shaped structure inclined to one side. A contact plate 10 is provided at one end of the upper mold 7, and one side of the contact plate 10 is an arc-shaped structure, and the contact plate 10 is in contact with the driving plate 16; When the air conditioning duct injection mold is demoulded, the output rod 9 pushes the upper mold 7 toward the lower mold 6, and the contact plate 10 and the driving plate 16 are released, and the driving plate 16 is continuously squeezed and pushed by the contact plate 10. At the same time, the driving plate 16 is an arc shape inclined to one side, so that the driving plate 16 drives the limit plate 15 to rise, so that the first guide rod 13 contracts under the elastic force of the return spring 14, and drives the rotating rod 17 to rise synchronously, so that the smear plate 20 can rise to the bottom of the storage box 12 and contact the control component. At the same time, when the single injection molding is completed, the contact plate 10 Separated from the driving plate 16, the first guide rod 13 can be extended and retracted under the elastic force of the return spring 14 and the gravity of the rotating rod 17 itself, and at the same time, the elastic force of the compression spring 19 and the guidance of the second guide rod 18 make the smear plate 20 in close contact with the surface of the middle mold core 11, so that the smear plate 20 evenly applies the demoulding oil to the surface of the middle mold core 11, and each time the air-conditioning duct injection mold is processed, the demoulding oil can be applied before processing, thereby effectively improving the uniform distribution of the demoulding oil, and improving the demoulding efficiency and the quality of the finished product.

[0024] As a preferred implementation in this embodiment, refer to the attached Figure 6 and Figure 7The control component includes a fixed seat 21 fixedly connected to the storage box 12, a rotating column 22 is rotatably connected to the fixed seat 21, a driving gear 23 is fixedly connected to the rotating column 22, one end of the driving gear 23 is fixedly connected to a closing plate 24, a groove adapted to the closing plate 24 is provided at the bottom of the storage box 12, a driving ring 28 is meshed at one end of the driving gear 23, the driving ring 28 is fixedly connected to the lifting rod 26, a contact head 27 is fixedly connected to the bottom of the lifting rod 26, the lifting rod 26 is slidably connected in the fixed tube 25, the fixed tube 25 passes through the storage box 12, and a counterweight 29 is fixedly connected to the top of the lifting rod 26; when the smear plate 20 rises to the highest point, that is, when the smear plate 20 rises to the contact position with the bottom of the storage box 12, the smear plate 20 first contacts with the contact head 27, thereby The lifting rod 26 is driven to rise in the fixed tube 25, and the driving ring 28 fixedly connected to the lifting rod 26 is synchronously raised, so that the driving gear 23 meshing with the driving ring 28 rotates around the axis of the rotating column 22, and the closing plate 24 is synchronously rotated around the axis of the rotating column 22, so that the groove at the bottom of the storage box 12 is opened, and the demoulding oil in the storage box 12 drips onto the surface of the smear plate 20, ensuring precise control of the demoulding oil. At the same time, when the smear plate 20 is separated from the contact head 27, the weight of the counterweight block 29 enables the lifting rod 26 to move along the fixed tube 25, and at the same time drives the driving gear 23 to rotate synchronously in the opposite direction around the axis of the rotating column 22, so that the closing plate 24 fits the storage box 12, avoiding leakage of demoulding oil, thereby improving production efficiency and product quality.

[0025] As a preferred implementation in this embodiment, refer to the attached Figure 1-Figure 6 , Figure 8The knocking assembly includes a group of connecting plates 30 fixedly connected to one side of the middle mold core 11, a connecting rod 31 is rotatably connected in the connecting plate 30, a plurality of limit rings 32 are fixedly connected to the connecting rod 31, a threaded rod 33 is fixedly connected in the limit ring 32, the threaded rod 33 is a reciprocating double thread structure, a rotating ring 34 is threadedly sleeved on the threaded rod 33, one end of the rotating ring 34 is fixedly connected to a connecting arm 35, one end of the connecting arm 35 is fixedly connected to a collision block 36, both sides of the upper mold 7 are fixedly connected to connecting blocks 38, one end of the connecting block 38 is fixed A driving rack 39 is connected, and both sides of the lower mold 6 are fixedly connected to the limit plate 40, and the driving rack 39 is slidably connected in the limit plate 40. A rotating gear 41 is fixedly connected to the connecting rod 31, and the rotating gear 41 is meshed with the driving rack 39. A plurality of contact grooves 37 are provided on the surface of the collision block 36, and the collision block 36 contacts one side of the surface of the middle mold core 11; when the injection mold is processed, the upper mold 7 can drive the connecting block 38 to move at the same time during the separation process from the lower mold 6, and at the same time drive the driving rack 39 fixed thereto. The stop plate 40 moves to one side, thereby driving the rotating gear 41 meshing with the driving rack 39 to rotate. When the rotating gear 41 rotates, the connecting rod 31 is driven to rotate at the same time, thereby causing the threaded rod 33 to rotate at the same time. When the threaded rod 33 rotates, the threaded rod 33 is a reciprocating double-thread structure, so that the rotating ring 34 threadedly sleeved on the threaded rod 33 reciprocates on the threaded rod 33. At the same time, the rotating ring 34 rotates, which can make the collision block 36 contact with the surface of the middle mold core 11. When the rotating ring 34 is in the threaded state, the collision block 36 can be in contact with the surface of the middle mold core 11. When the groove rod 33 completes a reciprocating path, the collision block 36 completes a collision with the surface of the middle mold core 11. Therefore, after the collision block 36 completes the collision contact with the surface of the middle mold core 11, it continues to complete the reset of the initial position under the drive of the rotating ring 34, thereby realizing reciprocating collision and knocking on the surface of the middle mold core 11, thereby completing multi-level precise knocking on the middle mold core 11, which helps to promote the smooth demolding of the injection mold, improves the demolding success rate, reduces the occurrence of adhesion during the processing and use of the injection mold, and effectively improves production efficiency.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A demoulding mechanism for an air conditioning duct injection mold, comprising a support frame (1), a processing portion (2) is fixedly connected to one side of the top of the support frame (1), a feed hopper (3) is fixedly connected to the top of the processing portion (2), a driving motor is fixedly connected to one side of the processing portion (2), a conveying pipe (4) is fixedly connected to the other side of the processing portion (2), a lower mold (6) is fixedly connected to one end of the conveying pipe (4), the lower mold (6) is fixedly connected to the top of the support frame (1), a fixing plate (5) is fixedly connected to the other side of the top of the support frame (1), a pushing motor is fixedly connected to one side of the fixing plate (5), and an output rod (9) is fixedly connected to the output end of the driving motor, characterized in that: A middle mold core (11) is fixedly connected to one side of the lower mold (6), one end of the output rod (9) is fixedly connected to the upper mold (7), the top of the lower mold (6) is fixedly connected to a storage box (12), demoulding oil is stored in the storage box (12), and a roller coating component is fixedly connected to the bottom of the storage box (12); a group of control components are fixedly connected to the storage box (12), and knocking components are fixedly connected to both sides of the middle mold core (11); the roller coating component is used to evenly roll-coat the surface of the middle mold core (11); the control component is used to control the amount of demoulding oil dripping in the storage box (12); and the knocking component is used to knock the surface of the middle mold core (11).

2. The demoulding mechanism of the air conditioning duct injection mold according to claim 1, characterized in that: The roller coating assembly comprises a first guide rod (13) fixedly connected to the bottom of the storage box (12), the first guide rod (13) being a telescopic structure, the bottom of the first guide rod (13) being fixedly connected to a limiting plate (15), a return spring (14) being fixedly sleeved on the first guide rod (13), one end of the return spring (14) being fixedly connected to the first guide rod (13), the other end of the return spring (14) being fixedly connected to the limiting plate (15), one end of the limiting plate (15) being rotatably connected to a rotating rod (17), a plurality of groups of second guide rods (18) being fixedly connected to the rotating rod (17), the second guide rod (18) being a telescopic structure, one end of the second guide rod (18) being fixedly connected to an application plate (20), a compression spring (19) being fixedly sleeved on the second guide rod (18), one end of the compression spring (19) being fixedly connected to one side of the application plate (20), the other end of the compression spring (19) being fixedly connected to the rotating rod (17).

3. The demoulding mechanism of the air conditioning duct injection mold according to claim 1, characterized in that: The control assembly comprises a fixed seat (21) fixedly connected to the storage box (12), a rotating column (22) being rotatably connected to the fixed seat (21), a driving gear (23) being fixedly connected to the rotating column (22), one end of the driving gear (23) being fixedly connected to a closing plate (24), one end of the driving gear (23) being meshed with a driving ring (28), the driving ring (28) being fixedly connected to a lifting rod (26), a contact head (27) being fixedly connected to the bottom of the lifting rod (26), the lifting rod (26) being slidably connected to a fixed tube (25), the fixed tube (25) passing through the storage box (12), and a counterweight (29) being fixedly connected to the top of the lifting rod (26).

4. The demoulding mechanism of the air conditioning duct injection mold according to claim 1, characterized in that: The knocking assembly comprises a group of connecting plates (30) fixedly connected to one side of the middle mold core (11), a connecting rod (31) being rotatably connected inside the connecting plate (30), a plurality of groups of limiting rings (32) being fixedly connected to the connecting rod (31), a threaded rod (33) being fixedly connected inside the limiting ring (32), a rotating ring (34) being threadedly sleeved on the threaded rod (33), a connecting arm (35) being fixedly connected to one end of the rotating ring (34), and a collision block (36) being fixedly connected to one end of the connecting arm (35).

5. The demoulding mechanism of the air conditioning duct injection mold according to claim 2, characterized in that: One end of the limit plate (15) is fixedly connected to a driving plate (16), the driving plate (16) is in an arc shape inclined to one side, and one end of the upper mold (7) is provided with a contact plate (10), one side of the contact plate (10) is in an arc structure, and the contact plate (10) is in contact with the driving plate (16).

6. The demoulding mechanism of the air conditioning duct injection mold according to claim 1, characterized in that: A collecting frame (8) is provided at the bottom of the support frame (1), and the collecting frame (8) is provided at the bottom of the fixing plate (5).

7. The demoulding mechanism of the air conditioning duct injection mold according to claim 4, characterized in that: Both sides of the upper mold (7) are fixedly connected with connecting blocks (38), one end of the connecting block (38) is fixedly connected with a driving rack (39), both sides of the lower mold (6) are fixedly connected with a limiting plate (40), the driving rack (39) is slidably connected in the limiting plate (40), and a rotating gear (41) is fixedly connected to the connecting rod (31), and the rotating gear (41) is meshed with the driving rack (39).

8. The demoulding mechanism of the air conditioning duct injection mold according to claim 7, characterized in that: The surface of the collision block (36) is provided with a plurality of contact grooves (37), and the collision block (36) is in contact with one side of the surface of the middle mold core (11).

9. The demoulding mechanism of the injection mold for the air conditioning duct according to claim 8, characterized in that: The threaded rod (33) is a reciprocating double thread structure.

10. The demoulding mechanism of the air conditioning duct injection mold according to claim 2, characterized in that: The smear plate (20) is in contact with the surface of the middle mold core (11), and a plurality of flow grooves are provided on the surface of the smear plate (20).

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