Injection mold for automobile parts

Abstract

The injection mold for the automobile parts comprises a base and a supporting plate fixed to the top of the base, an electric telescopic rod is fixed to the side face of the supporting plate, a movable support is fixed to the end of the electric telescopic rod, and two symmetrically-arranged guide rails are fixed to the top of the base; the movable support is installed between the two guide rails in a sliding mode, a movable mold base is fixed to the side face of the movable support, and a fixed support is fixed between the two guide rails. According to the injection mold for the automobile parts, through the arrangement of the sealing mechanism, the sealing performance between the fixed mold base and the movable mold base is improved, the air leakage phenomenon is avoided, then the machining quality of the automobile parts is improved, meanwhile, due to the arrangement of the anti-sticking layer, the situation that the formed parts adhere to the inner wall of the forming cavity is effectively avoided, materials are conveniently and rapidly taken, and the machining efficiency is improved. And due to the arrangement of the cooling liquid channel, external cooling liquid can enter conveniently to achieve cooling forming of the parts.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for automobile parts. Background Art

[0002] When processing automobile parts, injection molds are generally required for injection molding. The existing injection molds have simple sealing structures, and the seals between the mold bases sometimes leak, which seriously affects the processing quality of automobile parts. In addition, the molded parts are generally adhered to the inside of the mold cavity, making it difficult to remove the material. Therefore, the utility model proposes an injection mold for automobile parts to solve the above-mentioned problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an injection mold for automobile parts, which solves the problems mentioned in the above background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: an injection mold for automotive parts, comprising a base and a support plate fixed on the top of the base, an electric telescopic rod fixed to the side of the support plate, a dynamic bracket fixed to the end of the electric telescopic rod, two symmetrically arranged guide rails fixed to the top of the base, the dynamic bracket slidably installed between the two guide rails, a dynamic mold base fixed to the side of the dynamic bracket, a fixed bracket fixed between the two guide rails, a fixed mold base fixed to the side of the fixed bracket, an injection tube passing through and connected to the dynamic mold base, one end of the injection tube passing through the dynamic mold base, a molding cavity arranged on the inner side of the fixed mold base, a sealing mechanism arranged between the dynamic mold base and the fixed mold base, and the inner wall of the molding cavity is coated with an anti-sticking layer.

[0005] Preferably, the sealing mechanism includes a fixed frame fixed on the inner side of the fixed mold base, an outer sealing strip is fixed on the surface of the fixed frame, a frame-shaped groove for use with the fixed frame is opened on the inner side of the movable mold base, and an inner sealing strip for use with the outer sealing strip is installed on the inner wall of the frame-shaped groove.

[0006] Preferably, the outer width of the fixing frame is greater than the inner width, and its cross section is an isosceles trapezoid; the outer width of the frame-shaped groove is greater than the inner width, and its cross section is also an isosceles trapezoid.

[0007] Preferably, the anti-sticking layer is a polytetrafluoroethylene coating.

[0008] Preferably, a cooling liquid channel is provided inside the fixed mold base, and the cooling liquid channel is arranged around the molding cavity.

[0009] Preferably, one end of the cooling liquid channel is connected to and fixed with a liquid inlet pipe, and the other end is connected to and fixed with a liquid outlet pipe.

[0010] Beneficial Effects

[0011] The utility model provides an injection mold for automobile parts. Compared with the prior art, it has the following beneficial effects:

[0012] The injection mold for automobile parts improves the sealing between the fixed mold base and the movable mold base by setting a sealing mechanism, avoids air leakage, and thus improves the processing quality of automobile parts. At the same time, due to the setting of the anti-sticking layer, it effectively avoids the adhesion of molded parts to the inner wall of the molding cavity, which is convenient for rapid material removal. The setting of the coolant channel facilitates the entry of external coolant to achieve cooling molding of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the fixed mold base structure of the utility model;

[0015] Figure 3 This is a main sectional view of the fixed die base structure of the utility model;

[0016] Figure 4 It is the main sectional view of the movable mold base structure of the utility model.

[0017] In the figure: 1-base, 2-support plate, 3-electric telescopic rod, 4-movable bracket, 5-guide rail, 6-movable mold base, 7-fixed bracket, 8-fixed mold base, 9-injection tube, 10-molding cavity, 11-sealing mechanism, 111-fixed frame, 112-outer sealing strip, 113-frame groove, 114-inner sealing strip, 12-anti-sticking layer, 13-cooling liquid channel, 14-liquid inlet pipe, 15-liquid outlet pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4The utility model provides a technical solution: an injection mold for automobile parts, comprising a base 1 and a support plate 2 fixed on the top of the base 1, an electric telescopic rod 3 is fixed on the side of the support plate 2, which is electrically connected to an external power supply and controlled by a control switch, a movable bracket 4 is fixed at the end of the electric telescopic rod 3, two symmetrically arranged guide rails 5 are fixed on the top of the base 1, the movable bracket 4 is slidably installed between the two guide rails 5, a movable mold seat 6 is fixed on the side of the movable bracket 4 and can move left and right, a fixed bracket 7 is fixed between the two guide rails 5, a fixed mold seat 8 is fixed on the side of the fixed bracket 7, an injection tube 9 is passed through and connected to the movable mold seat 6 for the inflow of molten plastic liquid, one end of the injection tube 9 passes through the movable mold seat 6, a molding cavity 10 is arranged on the inner side of the fixed mold seat 8, a sealing mechanism 11 is arranged between the movable mold seat 6 and the fixed mold seat 8, and the inner wall of the molding cavity 10 is coated with an anti-sticking layer 12, and the anti-sticking layer 12 is a polytetrafluoroethylene coating. Polytetrafluoroethylene is also called Teflon, which is generally called "non-stick coating" or "easy-to-clean material". This material is resistant to acid, alkali and various organic solvents, and is almost insoluble in all solvents. At the same time, polytetrafluoroethylene is resistant to high temperatures and has an extremely low friction coefficient, so in addition to being used as a lubricant, polytetrafluoroethylene is coated on the inner wall of the molding cavity 10 so that the parts will not adhere to the inner wall of the molding cavity 10 after molding, making it easier to quickly demold and take out the material.

[0020] The sealing mechanism 11 includes a fixed frame 111 fixed to the inner side of the fixed mold base 8, an outer sealing strip 112 is fixed to the surface of the fixed frame 111, a frame-shaped groove 113 for use with the fixed frame 111 is opened on the inner side of the movable mold base 6, and an inner sealing strip 114 for use with the outer sealing strip 112 is installed on the inner wall of the frame-shaped groove 113. The outer width of the fixed frame 111 is greater than the inner width, and its cross-section is an isosceles trapezoid. The outer width of the frame-shaped groove 113 is greater than the inner width, and its cross-section is also an isosceles trapezoid. Through this design, the outer sealing strip 112 can smoothly and quickly contact and fit with the inner sealing strip 114, thereby increasing the contact area between the two, and thereby improving the sealing performance. The outer sealing strip 112 and the inner sealing strip 114 are both made of high-temperature resistant nitrile rubber.

[0021] A coolant channel 13 is provided inside the fixed mold base 8. The coolant channel 13 is arranged around the molding cavity 10. One end of the coolant channel 13 is connected to and fixed with a liquid inlet pipe 14, and the other end is connected to and fixed with a liquid outlet pipe 15. The liquid inlet pipe 14 can be connected through an external coolant pump, so that the external coolant enters the coolant channel 13 through the liquid inlet pipe 14, thereby cooling the fixed mold base 8, thereby facilitating and accelerating the cooling of the automotive parts after molding.

[0022] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0023] During operation, the electric telescopic rod 3 is started to drive the movable bracket 4 to move left, so that the movable mold seat 6 and the fixed mold seat 8 are closed, so that the fixed frame 11 can be stably inserted into the frame-shaped groove 113, and the outer sealing strip 112 can smoothly and quickly contact and fit with the inner sealing strip 114, thereby increasing the contact area between the two and thereby improving the sealing performance. Then, the molten plastic liquid is introduced through the injection molding tube 9, so that the molten plastic liquid enters the molding cavity 10, and then waits for the parts to be molded. After the injection molding is completed, the external coolant pump is started, and the external coolant can be drawn into the coolant channel 13 through the liquid inlet pipe 14 to achieve cooling of the fixed mold seat 8, thereby facilitating the cooling of the automobile parts. Due to the setting of the anti-sticking layer 12, the molded parts are effectively prevented from adhering to the inner wall of the molding cavity 10. Then, the electric telescopic rod 3 is started to drive the movable bracket 4 to move right, so that the movable mold seat 6 is separated from the fixed mold seat 8, and the injection molded automobile parts can be taken out.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] 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. An injection mold for automobile parts, comprising a base (1) and a support plate (2) fixed on the top of the base (1), Features: An electric telescopic rod (3) is fixed to the side of the support plate (2), a dynamic bracket (4) is fixed to the end of the electric telescopic rod (3), two symmetrically arranged guide rails (5) are fixed to the top of the base (1), the dynamic bracket (4) is slidably installed between the two guide rails (5), a dynamic mold base (6) is fixed to the side of the dynamic bracket (4), a fixed bracket (7) is fixed between the two guide rails (5), a fixed mold base (8) is fixed to the side of the fixed bracket (7), an injection tube (9) passes through and is connected to the dynamic mold base (6), one end of the injection tube (9) passes through the dynamic mold base (6), a molding cavity (10) is arranged on the inner side of the fixed mold base (8), a sealing mechanism (11) is arranged between the dynamic mold base (6) and the fixed mold base (8), and the inner wall of the molding cavity (10) is coated with an anti-sticking layer (12).

2. An injection mold for automobile parts according to claim 1, Features: The sealing mechanism (11) comprises a fixed frame (111) fixed on the inner side of the fixed die seat (8), an outer sealing strip (112) being fixed on the surface of the fixed frame (111), a frame-shaped groove (113) for use with the fixed frame (111) being provided on the inner side of the movable die seat (6), and an inner sealing strip (114) for use with the outer sealing strip (112) being installed on the inner wall of the frame-shaped groove (113).

3. An injection mold for automobile parts according to claim 2, Features: The outer width of the fixing frame (111) is greater than the inner width, and its cross section is an isosceles trapezoid; the outer width of the frame-shaped groove (113) is greater than the inner width, and its cross section is also an isosceles trapezoid.

4. The injection mold for automobile parts according to claim 1, Features: The anti-sticking layer (12) is a polytetrafluoroethylene coating.

5. The injection mold for automobile parts according to claim 1, Features: A cooling liquid channel (13) is provided inside the fixed mold base (8), and the cooling liquid channel (13) is arranged around the molding cavity (10).

6. An injection mold for automobile parts according to claim 5, Features: One end of the cooling liquid channel (13) is connected to and fixed with a liquid inlet pipe (14), and the other end is connected to and fixed with a liquid outlet pipe (15).

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