Automobile air conditioner vent pipe blowing mold

Abstract

The utility model relates to an automobile air conditioner vent pipe blowing mold which comprises a fixed mold plate and a movable mold plate, the guide device is arranged between the fixed mold plate and the movable mold plate and comprises a plurality of groups of guide columns and guide sleeves matched with the guide columns respectively, and further comprises a plurality of limiting bulges and limiting grooves matched with the limiting bulges respectively, a fixed mold cavity is formed in the fixed mold plate, fixed mold inserts are connected to the two ends of the fixed mold cavity, fixed mold cavities are formed in the fixed mold inserts, and the fixed mold cavities are communicated with the limiting bulges. A fixed mold boss is formed at the contact end of the fixed mold chamber and the fixed mold cavity; and a movable mold cavity matched with the fixed mold cavity is formed in the movable mold plate, and movable mold inserts matched with the fixed mold inserts are arranged at the two ends of the movable mold cavity. The inserts are installed at the two ends of the mold cavity, the wedge-shaped bosses are formed at the contact ends of the inserts and the mold cavity, redundant flashes of a vent pipe opening are automatically removed, the forming quality and the processing efficiency of the vent pipe are improved, accurate positioning of the mold cavity is guaranteed through the guiding device, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of blow molding molds, and particularly relates to a blow molding mold for an automobile air-conditioning ventilation pipe. Background Art

[0002] The automobile air-conditioning system is a device for realizing refrigeration, heating, ventilation and air purification of the air in the carriage, and the ventilation pipe is responsible for connecting with each air-conditioning air outlet in the automobile.

[0003] As Figure 1-2 shown, the ventilation pipe in the background art is formed with left and right ventilation pipe orifices, and the end faces of the left and right ventilation pipe orifices are formed with inclined planes inclined from the middle to both sides, and the forming positions of the two ventilation pipe orifices are asymmetric. After the ventilation pipe is blow molded, the excess flash at both ends is extremely difficult to cut in the subsequent cutting process due to the special shape of its end face and the asymmetry of the positions at both ends. The cutting surface needs to be carried out in multiple times, resulting in low processing efficiency and poor quality of the cutting surface; moreover, the ventilation pipe has large structural dimensions, and the corresponding mold can reach 1.6 m. Using the traditional guide pillar and guide sleeve for mold closing will inevitably cause the mold closing strength not to meet the requirements, and it is extremely easy to damage the mold cavity. Content of the Utility Model

[0004] Aiming at the above-mentioned deficiencies existing in the prior art, the purpose of the utility model is to provide a blow molding mold for an automobile air-conditioning ventilation pipe.

[0005] The utility model adopts the following technical scheme:

[0006] A blow molding mold for an automobile air-conditioning ventilation pipe, comprising a fixed template and a movable template;

[0007] A guiding device, which is arranged between the fixed template and the movable template, includes multiple groups of guide pillars and their respective affiliated guide sleeves. The multiple groups of guide pillars are arranged on the periphery of the movable template, and the guide sleeves affiliated to each guide pillar are arranged at the corresponding positions of the fixed template;

[0008] It further includes multiple limiting protrusions and their respective affiliated limiting grooves. The multiple limiting protrusions are arranged on the inner periphery of the fixed template and are integrally formed with the fixed template, and the limiting grooves affiliated to each limiting protrusion are opened at the corresponding positions of the movable template;

[0009] The fixed template is internally provided with a fixed mold cavity. At both ends of the fixed mold cavity, fixed mold inserts are connected. A fixed mold chamber communicating with the fixed mold cavity is opened in the fixed mold insert, and a fixed mold boss is formed at the contact end of the fixed mold chamber and the fixed mold cavity;

[0010] The moving template is provided with a moving mold cavity matching the fixed mold cavity. At both ends of the moving mold cavity, moving mold inserts matching the fixed mold inserts are provided. A moving mold chamber communicating with the moving mold cavity is provided in the moving mold insert, and a moving mold boss is formed at the contact end of the moving mold chamber and the moving mold cavity.

[0011] In a preferred embodiment of the present utility model, a plurality of moving mold support columns are fixed on the back of the moving template, and a moving mold fixing plate is fixed at the free ends of the plurality of moving mold support columns; a plurality of fixed mold support columns are fixed on the back of the fixed template, and a fixed mold fixing plate is fixed at the free ends of the plurality of fixed mold support columns.

[0012] In a preferred embodiment of the present utility model, a number of first cooling water holes are penetrated and provided on one side of the fixed template, and a number of second cooling water holes are penetrated and provided on one side of the moving template.

[0013] In a preferred embodiment of the present utility model, a number of fixed mold vent holes are evenly distributed in the fixed mold cavity, and a number of moving mold vent holes are evenly distributed in the moving mold cavity, and the number of the fixed mold vent holes and the moving mold vent holes correspond to each other one by one.

[0014] In a preferred embodiment of the present utility model, at least two blowing needles are further included, and the two blowing needles are respectively inserted into the fixed mold chamber and the moving mold chamber.

[0015] In a preferred embodiment of the present utility model, the limiting protrusion is conical, and the shape of the limiting groove is adapted to the limiting protrusion.

[0016] In a preferred embodiment of the present utility model, the cross-sectional shapes of the fixed mold boss and the moving mold boss are wedge-shaped.

[0017] Beneficial effects:

[0018] For the blow molding die for an automotive air-conditioning ventilation pipe of the present utility model, inserts are installed at both ends of the die cavity. At the same time, wedge-shaped bosses are formed at the contact ends of the inserts and the die cavity, realizing the automatic removal of excess flash at the formed ventilation pipe orifice, improving the overall quality and processing efficiency of the ventilation pipe. The setting of the inserts can simultaneously reduce the processing difficulty and processing cost of the die;

[0019] A guiding device is installed between the fixed template and the moving template of the present utility model. The cooperation of the guide post and the guide sleeve is used to ensure that the moving template moves smoothly along the correct direction during the closing and opening processes, reducing wear and improving the die life; the cooperation of the limiting protrusion and the limiting groove ensures that the moving template can be accurately positioned on the fixed template when closed, preventing the moving template from shifting during the closing process, ensuring the precise positioning of the die cavity, avoiding damage to the die cavity, and extending the service life of the die;

[0020] The blow molding die for the ventilation pipe designed by the utility model is convenient for installation and operation, has high die positioning accuracy, good plastic part forming quality, and high subsequent processing efficiency. Description of the Drawings

[0021] Figure 1 It is a schematic structure diagram of the automotive ventilation pipe described in the background art; Figure 1 ;

[0022] Figure 2 It is a schematic structure diagram of the automotive ventilation pipe described in the background art; Figure 2 ;

[0023] Figure 3 It is a schematic structure diagram of a blow molding die for an automotive air conditioning ventilation pipe according to the utility model;

[0024] Figure 4 It is a schematic structure diagram of the fixed template according to the utility model;

[0025] Figure 5 It is a schematic structure diagram of the moving template according to the utility model;

[0026] Figure 6 It is a schematic structure diagram of the fixed die insert according to the utility model;

[0027] Figure 7 According to the utility model Figure 6 Partial enlarged view of part A;

[0028] Figure 8 It is a schematic structure diagram of the moving die insert according to the utility model.

[0029] In the figure: 1 fixed template, 11 fixed die cavity, 12 fixed die insert, 121 fixed die chamber, 122 fixed die boss, 13 first cooling water hole, 14 fixed die ventilation hole;

[0030] 2 moving template, 21 moving die cavity, 22 moving die insert, 221 moving die chamber, 222 moving die boss, 23 second cooling water hole, 24 moving die ventilation hole;

[0031] 3 guiding device, 31 guide pillar, 32 guide sleeve, 33 limit projection, 34 limit groove;

[0032] 4 moving die support pillar;

[0033] 5 moving die fixing plate;

[0034] 6 fixed die support pillar;

[0035] 7 fixed die fixing plate. Detailed Implementation Manner

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] As Figures 3-5 shown, a blow molding die for an automotive air conditioning ventilation pipe includes a fixed template 1 and a movable template 2;

[0038] A guiding device 3 is provided between the fixed template 1 and the movable template 2, which includes multiple sets of guide posts 31 and their respective affiliated guide sleeves 32. The multiple sets of guide posts 31 are arranged on the periphery of the movable template 2, and the guide sleeves 32 affiliated to each guide post 31 are arranged at corresponding positions on the fixed template 1;

[0039] It further includes multiple limiting protrusions 33 and their respective affiliated limiting grooves 34. The multiple limiting protrusions 33 are arranged on the inner periphery of the fixed template 1 and are integrally formed with the fixed template 1. The limiting grooves 34 affiliated to each limiting protrusion 33 are opened at corresponding positions on the movable template 2;

[0040] The fixed template 1 has a fixed mold cavity 11 opened therein. Fixed mold inserts 12 are connected to both ends of the fixed mold cavity 11. As Figure 6 shown, a fixed mold chamber 121 communicating with the fixed mold cavity 11 is opened in the fixed mold insert 12, and a fixed mold boss 122 is formed at the contact end of the fixed mold chamber 121 and the fixed mold cavity 11;

[0041] The movable template 2 has a movable mold cavity 21 opened therein that matches the fixed mold cavity 11. Movable mold inserts 22 that match the fixed mold inserts 12 are arranged at both ends of the movable mold cavity 21. As Figure 8 shown, a movable mold chamber 221 communicating with the movable mold cavity 21 is opened in the movable mold insert 22, and a movable mold boss 222 is formed at the contact end of the movable mold chamber 221 and the movable mold cavity 21;

[0042] The working principles and beneficial effects of the above embodiments are as follows:

[0043] A guiding device 3 is provided between the fixed template 1 and the movable template 2 for positioning between the two. Among them, the multiple sets of guide posts 31 and guide sleeves 32 are used to ensure that the movable template 2 moves smoothly in the correct direction during the closing and opening processes, reduce wear, and improve the service life of the die; the multiple sets of limiting protrusions 33 cooperate with the limiting grooves 34 to ensure that the movable template 2 can be accurately positioned on the fixed template 1 when closed, prevent the movable template 2 from shifting during the closing process, and ensure the precise positioning of the die cavity;

[0044] The cavity of the ventilation pipe mold takes the middle position of the ventilation pipe as the parting surface. The setting of the fixed mold insert 12 and the moving mold insert 22 realizes the forming of the upper and lower inclined end faces of the left and right ventilation pipe orifices. As Figure 7 shown, the cross-sectional shapes of the fixed mold boss 122 and the moving mold boss 222 are wedge-shaped, which realizes the automatic removal of the excess flash at the ventilation pipe orifice, facilitating the improvement of the overall quality and processing efficiency of the ventilation pipe.

[0045] In one embodiment, a plurality of moving mold support columns 4 are fixed to the back of the moving template 2, and a moving mold fixing plate 5 is fixed to the free ends of the plurality of moving mold support columns 4; a plurality of fixed mold support columns 6 are fixed to the back of the fixed template 1, and a fixed mold fixing plate 7 is fixed to the free ends of the plurality of fixed mold support columns 6.

[0046] In one embodiment, a number of first cooling water holes 13 are penetrated and opened on one side of the fixed template 1, and a number of second cooling water holes 23 are penetrated and opened on one side of the moving template 2. The above-mentioned a number of first cooling water holes 13 and second cooling water holes 23 are used to cool their corresponding mold cavities, enabling the blow-molded product to be quickly shaped. At the same time, they also have the function of maintaining the temperature of the mold cavity and controlling the product forming time.

[0047] In one embodiment, a number of fixed mold vent holes 14 are evenly distributed in the fixed mold cavity 11, and a number of moving mold vent holes 24 are evenly distributed in the moving mold cavity 21. It is convenient for the inflated parison to discharge the air between the two cavities from the fixed mold vent holes 14 and the moving mold vent holes 24 when the mold is closed. The a number of fixed mold vent holes 14 and the moving mold vent holes 24 correspond to each other one by one, improving the air fluidity.

[0048] In one embodiment, it further includes at least two blowing needles, and the two blowing needles are respectively inserted into two of the above-mentioned fixed mold chambers 121 or moving mold chambers 221, and compressed air is blown into the parison from both ends to make the parison expand and adhere to the inner walls of the fixed mold cavity 11 and the moving mold cavity 21, so that the parison is formed into the ventilation pipe to be prepared.

[0049] In one embodiment, the above-mentioned limiting protrusion 33 is conical, and the limiting groove 34 is adapted to the shape of the limiting protrusion 33, which has the functions of guiding and limiting.

[0050] To sum up:

[0051] For the blow molding mold of the automotive air conditioning ventilation pipe of the present utility model, the parison is heated to a softened state and placed in the opposed fixed template 1 and moving template 2. After closing the mold, compressed air is blown into the parison through the blowing needles to make the parison expand and adhere to the inner walls of the fixed mold cavity 11 and the moving mold cavity 21. After cooling and demolding through a number of first cooling water holes 13 and second cooling water holes 23, the excess material heads at both ends are automatically separated from the ventilation pipe body after demolding, so that the parison is formed into the ventilation pipe to be prepared.

[0052] In the utility model, inserts are installed at both ends of the mold cavity. At the same time, a wedge-shaped boss is formed at the contact end of the insert and the mold cavity, so as to realize the automatic removal of the redundant flash at the formed ventilation pipe orifice, and improve the overall quality and processing efficiency of the ventilation pipe.

[0053] The foregoing has shown and described the basic principles, main features and advantages of the utility model. The terms "front", "rear", "left" and "right" used herein are not specifically defined, mainly for more intuitively illustrating the technical solution and not for limitation. Those skilled in the art should understand that the above embodiments are only for explaining the technical concept and features of the utility model, and the purpose is to enable those familiar with this technology to understand the content of the utility model and implement it. However, it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be covered within the protection scope of the utility model.

Claims

1. An injection blow molding die for an automotive air-conditioning ventilation pipe, characterized in that: It includes a fixed template (1) and a moving template (2); A guiding device (3) is arranged between the fixed template (1) and the moving template (2), and includes multiple groups of guide posts (31) and their respective allocated guide sleeves (32). The multiple groups of guide posts (31) are arranged on the peripheral side of the moving template (2), and the guide sleeves (32) allocated to each guide post (31) are arranged at corresponding positions on the fixed template (1); It further includes multiple limit protrusions (33) and their respective allocated limit grooves (34). The multiple limit protrusions (33) are arranged on the inner peripheral side of the fixed template (1) and are integrally formed with the fixed template (1), and the limit grooves (34) allocated to each limit protrusion (33) are opened at corresponding positions on the moving template (2); The fixed template (1) is internally provided with a fixed mold cavity (11). Fixed mold inserts (12) are connected to both ends of the fixed mold cavity (11). A fixed mold chamber (121) communicating with the fixed mold cavity (11) is opened in the fixed mold insert (12), and a fixed mold boss (122) is formed at the contact end of the fixed mold chamber (121) and the fixed mold cavity (11); The moving template (2) is internally provided with a moving mold cavity (21) matching the fixed mold cavity (11). Moving mold inserts (22) matching the fixed mold inserts (12) are arranged at both ends of the moving mold cavity (21). A moving mold chamber (221) communicating with the moving mold cavity (21) is opened in the moving mold insert (22), and a moving mold boss (222) is formed at the contact end of the moving mold chamber (221) and the moving mold cavity (21).

2. The blow molding die for an automotive air-conditioning ventilation pipe according to claim 1, characterized in that: A plurality of moving mold support columns (4) are fixed to the back surface of the moving template (2), and a moving mold fixing plate (5) is fixed to the free ends of the plurality of moving mold support columns (4); a plurality of fixed mold support columns (6) are fixed to the back surface of the fixed template (1), and a fixed mold fixing plate (7) is fixed to the free ends of the plurality of fixed mold support columns (6).

3. The blow molding die for the automotive air-conditioning ventilation pipe according to claim 1, wherein: A number of first cooling water holes (13) are penetrated and opened on one side of the fixed template (1), and a number of second cooling water holes (23) are penetrated and opened on one side of the moving template (2).

4. A blow molding die for an automotive air-conditioning ventilation pipe according to claim 1, characterized in that: A number of fixed mold vent holes (14) are evenly distributed in the fixed mold cavity (11), and a number of moving mold vent holes (24) are evenly distributed in the moving mold cavity (21). The number of fixed mold vent holes (14) and moving mold vent holes (24) correspond to each other one by one.

5. A blow molding die for an automotive air conditioning ventilation pipe according to claim 1, characterized in that: It further includes at least two blow needles, and the two blow needles are respectively inserted into the fixed mold chamber (121) and the moving mold chamber (221).

6. The blow molding die for an automotive air-conditioning ventilation pipe according to claim 1, characterized in that: The limit protrusion (33) is conical, and the limit groove (34) is adapted to the shape of the limit protrusion (33).

7. A blow molding die for an automobile air-conditioning ventilation pipe according to claim 1, wherein: The cross-sectional shapes of the fixed mold boss (122) and the moving mold boss (222) are wedge-shaped.

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