Easily demoldable injection mold

Abstract

The application discloses an injection mold easy to demold, relates to the technical field of injection molds, and comprises a mounting frame, an injection mold is arranged in the inner cavity of the mounting frame, the injection mold is divided into a first mold and a second mold, the first mold is fixedly connected to the inner wall of the mounting frame, the inner wall of the mounting frame is fixedly connected with a limiting rod and a guide rod, a demolding mechanism, and a mounting mechanism are arranged. The application is provided with the demolding mechanism and the mounting mechanism, when the second mold and the first mold are combined, the push block is automatically displaced out of the inner cavity of the injection mold, when the second mold and the first mold are separated, the push block is pushed out of the injection mold by the elastic force of the push spring, and automatic demolding operation is performed; meanwhile, the cooling water tank can be quickly mounted and dismounted, the cooling water tank is convenient to overhaul, and after injection is completed, the mold is automatically demolded, and the cooling water tank is automatically reinforced during mold combining.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to injection molds that are easy to demold. Background Technology

[0002] Electronic products are products that use electricity as their working basis. They mainly include: watches, smartphones, telephones, televisions, DVD players (VCD, SVCD, DVD), video recorders, camcorders, radios, tape recorders, stereo systems, CD players, computers, game consoles, mobile communication products, etc. Because early products mainly used vacuum tubes as basic components, they are called electronic products. When manufacturing electronic products, the parts need to be injection molded.

[0003] When injection molding parts, the left and right molds fit together, and material is injected into the inner cavity of the mold. After cooling by the cooling module, the mold separates, and the material falls out of the mold for collection. However, during the mold separation process, the molded material tends to stick tightly to the inner cavity of the mold and is difficult to fall off automatically. The material needs to be removed manually, which reduces the efficiency of injection molding. In order to facilitate the demolding of the molded material on the mold, an easy-to-demold injection mold is provided. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold that is easy to demold, so as to facilitate the demolding of the molding material on the mold.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an easy-to-demold injection mold, comprising a mounting frame, wherein the inner cavity of the mounting frame is provided with an injection mold, the injection mold being divided into a first mold and a second mold, the first mold being fixedly connected to the inner wall of the mounting frame, a limit rod and a guide rod being fixedly connected to the inner wall of the mounting frame, the limit rod and the guide rod both penetrating the injection mold, a hydraulic cylinder being installed on the outer wall of the mounting frame, the output end of the hydraulic cylinder being connected to the second mold for driving the second mold to move, a limit hole and a guide groove being formed on the outer wall of the injection mold, the limit hole for the insertion of the limit rod, the guide groove for the insertion of the guide rod, a cooling water tank being installed at the bottom of the injection mold, the bottom end of the cooling water tank being provided with an inlet and an outlet, the molded material being demolded through a demolding mechanism, and the cooling water tank being installed and disassembled through an installation mechanism;

[0006] The demolding mechanism includes a push block, which is slidably connected to the inside of the injection mold and extends into the inner cavity of the injection mold. A push spring is connected between the push block and the injection mold. A groove is formed at the bottom of the inner wall of the guide groove. A pressure rod is slidably connected inside the injection mold. The pressure rod passes through the push block and extends into the inner cavity of the groove. Pressure blocks are fixedly connected to the outer walls on both sides of the pressure rod. A movable block extending to the bottom of the guide rod is slidably connected inside the guide rod. A connecting block extending above the guide rod is fixedly connected to the top of the movable block. Limit blocks are fixedly connected to both ends of the movable block.

[0007] As a further embodiment of the present invention: the demolding mechanism further includes a positioning block, the positioning block being slidably connected to the inside of the injection mold and located above the push block, a positioning spring being connected between the positioning block and the injection mold, and an L-shaped block being slidably connected to the inside of the injection mold on one side of the positioning block, the L-shaped block extending out of the injection mold.

[0008] As a further embodiment of the present invention: the mounting mechanism includes a mounting groove, which is formed at the bottom end of the injection mold; a fixing groove is formed on the outer wall of the cooling water tank; a fixing block extending into the inner cavity of the mounting groove is rotatably connected inside the injection mold; a rotating shaft is fixedly connected to the bottom end of the fixing block; a rotating block is fixedly connected to the bottom end of the rotating shaft at the bottom end of the injection mold; a slot is formed at the position where the bottom end of the injection mold contacts the rotating block; a locking block extending above the rotating block is slidably connected inside the rotating block; and a connecting spring is connected between the locking block and the rotating block.

[0009] As a further embodiment of the present invention: two sets of limiting rods and limiting holes are provided, the outer wall of the limiting rod is in contact with the inner wall of the limiting hole, and the outer wall of the guide rod is in contact with the inner wall of the guide groove.

[0010] As a further embodiment of the present invention: the connecting block has a first inclined surface at one end outside the guide rod, and the outer wall of the movable block fits against the inner wall of the groove.

[0011] As a further embodiment of the present invention: the outer wall of the push block is provided with a slot for the pressing rod to pass through, and the top of the push block is provided with a second inclined surface, which contacts the pressing block.

[0012] As a further embodiment of the present invention: the top end of the push block is provided with a toothed groove, which engages with the bottom end of the positioning block; the outer wall of the positioning block is provided with a third inclined surface, which contacts the L-shaped block.

[0013] As a further embodiment of the present invention: the outer wall of the cooling water tank is in contact with the inner wall of the mounting groove, the outer wall of the fixing block is in contact with the inner wall of the fixing groove, the top outer wall of the card block is in contact with the inner wall of the card groove, and the top of the card block is provided with a semi-circular surface.

[0014] As a further embodiment of the present invention: the fixing block is semi-circular in shape, and the fixing block is composed of a straight part a and an arc-shaped part b.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By setting up demolding and installation mechanisms, when the second mold and the first mold are closed, the push block automatically moves out of the inner cavity of the injection mold. When the second mold and the first mold are separated, the push block is pushed out of the injection mold by the elastic force of the push spring, thus performing automatic demolding. At the same time, the cooling water tank can be quickly installed and disassembled, which facilitates the maintenance of the cooling water tank. After injection molding is completed, the mold is automatically demolded, and the cooling water tank is automatically reinforced during the mold closing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the first mold of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation of the cooling water tank of the present invention;

[0020] Figure 4 This is a cross-sectional view of the injection mold of the present invention;

[0021] Figure 5 This is a schematic diagram of the pusher block of the present invention;

[0022] Figure 6 This is a cross-sectional view of the guide rod of the present invention;

[0023] Figure 7 This is a schematic diagram of the card slot structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the installation of the card block according to the present invention.

[0025] In the diagram: 1. Mounting bracket; 2. Injection mold; 201. First mold; 202. Second mold; 3. Limiting rod; 4. Guide rod; 5. Hydraulic cylinder; 6. Limiting hole; 7. Guide groove; 8. Demolding mechanism; 801. Push block; 802. Push spring; 803. Groove; 804. Pressing rod; 805. Pressing block; 806. Movable block; 807. Connecting block; 808. Limiting block; 809. Positioning block; 810. Positioning spring; 811. L-shaped block; 9. Mounting mechanism; 901. Mounting groove; 902. Fixing groove; 903. Fixing block; 903a. Straight part; 903b. Curved part; 904. Rotating shaft; 905. Rotating block; 906. Slot; 907. Locking block; 908. Connecting spring; 10. Cooling water tank; 11. Inlet; 12. Outlet. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-8In this embodiment of the invention, the easily demolded injection mold includes a mounting frame 1. An injection mold 2 is housed within the inner cavity of the mounting frame 1. The injection mold 2 is divided into a first mold 201 and a second mold 202. The first mold 201 is fixedly connected to the inner wall of the mounting frame 1. A limit rod 3 and a guide rod 4 are fixedly connected to the inner wall of the mounting frame 1. Both the limit rod 3 and the guide rod 4 penetrate the injection mold 2. A hydraulic cylinder 5 is mounted on the outer wall of the mounting frame 1. The output end of the hydraulic cylinder 5 is connected to the second mold 202 for driving... The second mold 202 is moved. The outer wall of the injection mold 2 has a limiting hole 6 and a guide groove 7. The limiting hole 6 allows the insertion of a limiting rod 3, and the guide groove 7 allows the insertion of a guide rod 4. A cooling water tank 10 is installed at the bottom of the injection mold 2. The bottom end of the cooling water tank 10 has an inlet 11 and an outlet 12. The molded material is demolded through a demolding mechanism 8. The cooling water tank 10 is installed and removed through an installation mechanism 9. The demolding mechanism 8 includes a push block 801, which is slidably connected to the injection mold. The guide rod 801 extends into the inner cavity of the injection mold 2. A push spring 802 connects the push block 801 and the injection mold 2. A groove 803 is provided at the bottom end of the inner wall of the guide groove 7. A pressing rod 804 is slidably connected inside the injection mold 2. The pressing rod 804 passes through the push block 801 and extends into the inner cavity of the groove 803. Pressing blocks 805 are fixedly connected to the outer walls on both sides of the pressing rod 804. A movable block 806 extending to the bottom end of the guide rod 4 is slidably connected inside the guide rod 4. The top of the 6 is fixedly connected to a connecting block 807 extending above the guide rod 4. The two ends of the movable block 806 are fixedly connected to limit blocks 808. The demolding mechanism 8 also includes a positioning block 809. The positioning block 809 is slidably connected inside the injection mold 2 and located above the push block 801. A positioning spring 810 is connected between the positioning block 809 and the injection mold 2. An L-shaped block 811 is slidably connected inside the injection mold 2 on one side of the positioning block 809. The L-shaped block 811 extends out of the injection mold 2.

[0028] In this embodiment: the hydraulic cylinder 5 drives the second mold 202 to move closer to the first mold 201 to perform the mold closing operation; the cooling water tank 10 is used to cool the injection mold 2, the water inlet 11 is connected to the water inlet pipe, and the water outlet 12 is connected to the water outlet pipe.

[0029] As the second mold 202 approaches the first mold 201, the guide groove 7 of the second mold 202 contacts the connecting block 807, pushing the connecting block 807 to move downward. The displacement of the connecting block 807 causes the movable block 806 to move downward. The movable block 806 moves into the groove 803 and contacts the lower pressure rod 804, pushing the lower pressure rod 804 to move downward. The movement of the lower pressure rod 804 causes the lower pressure block 805 to move. The movement of the lower pressure block 805 pushes the push block 801 out of the inner cavity of the injection mold 2, causing compression on the push spring 802.

[0030] When the second mold 202 and the first mold 201 are in contact, the L-shaped blocks 811 in the two molds come into contact with each other and are squeezed and pressed against each other. The displacement of the L-shaped blocks 811 pushes the positioning block 809 to move downward and engage with the push block 801, thereby fixing the push block 801 and preventing the push block 801 from loosening during injection molding.

[0031] When the second mold 202 and the first mold 201 separate, the guide groove 7 separates from the connecting block 807, and the push block 801 is pushed out of the injection mold 2 by the elastic force of the push spring 802, thus performing an automatic demolding operation.

[0032] Please refer to this carefully. Figures 3-8 The mounting mechanism 9 includes a mounting groove 901, which is located at the bottom of the injection mold 2. A fixing groove 902 is provided on the outer wall of the cooling water tank 10. A fixing block 903 extending into the inner cavity of the mounting groove 901 is rotatably connected inside the injection mold 2. A rotating shaft 904 is fixedly connected to the bottom of the fixing block 903. A rotating block 905 is fixedly connected to the bottom of the injection mold 2 at the bottom end of the rotating shaft 904. A slot 906 is provided at the junction of the bottom end of the injection mold 2 and the rotating block 905. A locking block 907 extending above the rotating block 905 is slidably connected inside the rotating block 905. A connecting spring 908 is connected between the locking block 907 and the rotating block 905. The fixing block 903 is semi-circular in shape and is composed of a straight part 903a and an arc part 903b.

[0033] In this embodiment: when installing the cooling water tank 10, the cooling water tank 10 is inserted into the mounting slot 901 (at this time, the fixing block 903 is not in the inner cavity of the mounting slot 901). After completion, the rotating block 905 is rotated to drive the rotating shaft 904 to rotate. The rotating shaft 904 rotates to drive the fixing block 903 to rotate into the fixing slot 902 to fix the cooling water tank 10. At the same time, the locking block 907 is displaced into the locking slot 906 by the elastic force of the connecting spring 908 to limit the rotation block 905.

[0034] When the second mold 202 and the first mold 201 are closed, the pressure rod 804 moves downward and contacts the straight part 903a of the fixing block 903, thereby preventing the fixing block 903 from rotating and automatically reinforcing the cooling water tank 10 to prevent it from loosening during use.

[0035] Please refer to this carefully. Figures 1-3 There are two sets of limiting rods 3 and limiting holes 6. The outer wall of the limiting rod 3 fits against the inner wall of the limiting hole 6, and the outer wall of the guide rod 4 fits against the inner wall of the guide groove 7.

[0036] In this embodiment: the hydraulic cylinder 5 operates to drive the second mold 202 to move closer to the first mold 201. At this time, the limiting rod 3 slides in the limiting hole 6, and the guide rod 4 slides in the guide groove 7.

[0037] Please refer to this carefully. Figures 4-6 The connecting block 807 has a first inclined surface at one end outside the guide rod 4. The outer wall of the movable block 806 fits against the inner wall of the groove 803. The outer wall of the push block 801 has a slot for the pressing rod 804 to pass through. The top of the push block 801 has a second inclined surface, which contacts the pressing block 805.

[0038] In this embodiment: the guide groove 7 of the second mold 202 contacts the connecting block 807, pushing the connecting block 807 to move downward. The displacement of the connecting block 807 causes the movable block 806 to move downward. The limiting block 808 is used to limit the movement of the movable block 806. The movable block 806 moves into the groove 803 and contacts the lower pressure rod 804, pushing the lower pressure rod 804 to move downward. The movement of the lower pressure rod 804 causes the lower pressure block 805 to move. The movement of the lower pressure block 805 pushes the push block 801 out of the inner cavity of the injection mold 2, causing compression on the push spring 802.

[0039] Please refer to this carefully. Figure 4 and Figure 5 The top of the push block 801 is provided with a toothed groove, which engages with the bottom of the positioning block 809. The outer wall of the positioning block 809 is provided with a third inclined surface, which contacts the L-shaped block 811.

[0040] In this embodiment: when the second mold 202 and the first mold 201 are in contact, the L-shaped blocks 811 in the two are in contact with each other and are squeezed and pressed against each other. The displacement of the L-shaped blocks 811 pushes the positioning block 809 to move downward and engage with the push block 801, thereby fixing the push block 801 and preventing the push block 801 from loosening during injection molding.

[0041] Please refer to this carefully. Figure 3 , Figure 4 , Figure 7 and Figure 8 The outer wall of the cooling water tank 10 is in contact with the inner wall of the mounting groove 901, the outer wall of the fixing block 903 is in contact with the inner wall of the fixing groove 902, the top outer wall of the card block 907 is in contact with the inner wall of the card groove 906, and the top of the card block 907 is provided with a semi-circular surface.

[0042] In this embodiment: When installing the cooling water tank 10, the cooling water tank 10 is inserted into the mounting slot 901 (at this time, the fixing block 903 has not entered the inner cavity of the mounting slot 901). After completion, the rotating block 905 is rotated to drive the rotating shaft 904 to rotate. The rotating shaft 904 rotates to drive the fixing block 903 to rotate into the fixing slot 902 to fix the cooling water tank 10. At the same time, the locking block 907 is displaced into the locking slot 906 by the elastic force of the connecting spring 908 to limit the rotation block 905.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An injection mold that is easy to demold, comprising a mounting frame (1), wherein an injection mold (2) is provided in the inner cavity of the mounting frame (1), the injection mold (2) being divided into a first mold (201) and a second mold (202), the first mold (201) being fixedly connected to the inner wall of the mounting frame (1), and a limit rod (3) and a guide rod (4) being fixedly connected to the inner wall of the mounting frame (1), the limit rod (3) and the guide rod (4) both penetrating the injection mold (2), and a hydraulic cylinder being installed on the outer wall of the mounting frame (1). 5), the output end of the hydraulic cylinder (5) is connected to the second mold (202) to drive the second mold (202) to move. The outer wall of the injection mold (2) is provided with a limiting hole (6) and a guide groove (7). The limiting hole (6) is for the insertion of the limiting rod (3), and the guide groove (7) is for the insertion of the guide rod (4). A cooling water tank (10) is installed at the bottom of the injection mold (2). The bottom end of the cooling water tank (10) is provided with an inlet (11) and an outlet (12). The molded material is demolded through the demolding mechanism (8), and the cooling water tank (10) is installed and disassembled through the installation mechanism (9); The demolding mechanism (8) includes a push block (801), which is slidably connected to the inside of the injection mold (2) and extends into the inner cavity of the injection mold (2). A push spring (802) is connected between the push block (801) and the injection mold (2). A groove (803) is provided at the bottom of the inner wall of the guide groove (7). A pressure rod (804) is slidably connected to the inside of the injection mold (2). The pressure rod (804) passes through the push block (801) and extends into the inner cavity of the injection mold (2). The inner cavity of the groove (803) has a pressing block (805) fixedly connected to the outer walls of both sides of the pressing rod (804). The guide rod (4) has a movable block (806) that extends to the bottom end of the guide rod (4) and a connecting block (807) that extends to the top of the guide rod (4) is fixedly connected to the top of the movable block (806). Limiting blocks (808) are fixedly connected to both ends of the movable block (806). The outer wall of the movable block (806) fits against the inner wall of the groove (803). The demolding mechanism (8) further includes a positioning block (809), which is slidably connected to the inside of the injection mold (2) and located above the push block (801). A positioning spring (810) is connected between the positioning block (809) and the injection mold (2). An L-shaped block (811) is slidably connected to the inside of the injection mold (2) on one side of the positioning block (809). The L-shaped block (811) extends out of the injection mold (2). The top of the push block (801) is provided with a toothed groove, which engages with the bottom of the positioning block (809). The outer wall of the positioning block (809) is provided with a third inclined surface, which contacts the L-shaped block (811). The outer wall of the push block (801) is provided with a slot for the pressing rod (804) to pass through, and the top of the push block (801) is provided with a second inclined surface, which is in contact with the pressing block (805). The mounting mechanism (9) includes a mounting groove (901), which is located at the bottom of the injection mold (2). A fixing groove (902) is provided on the outer wall of the cooling water tank (10). A fixing block (903) extending into the inner cavity of the mounting groove (901) is rotatably connected inside the injection mold (2). A rotating shaft (904) is fixedly connected to the bottom of the fixing block (903). A rotating block (905) is fixedly connected to the bottom of the injection mold (2). A slot (906) is provided at the junction of the bottom of the injection mold (2) and the rotating block (905). A locking block (907) extending above the rotating block (905) is slidably connected inside the rotating block (905). A connecting spring (908) is connected between the locking block (907) and the rotating block (905). The outer wall of the cooling water tank (10) is in contact with the inner wall of the mounting groove (901), the outer wall of the fixing block (903) is in contact with the inner wall of the fixing groove (902), the top outer wall of the card block (907) is in contact with the inner wall of the card slot (906), and the top of the card block (907) is provided with a semi-circular surface; the fixing block (903) is semi-circular in shape, and the fixing block (903) is composed of a straight surface (903a) and an arc surface (903b).

2. The injection mold for easy demolding according to claim 1, characterized in that, Two sets of limiting rods (3) and limiting holes (6) are provided. The outer wall of the limiting rod (3) is in contact with the inner wall of the limiting hole (6), and the outer wall of the guide rod (4) is in contact with the inner wall of the guide groove (7).

3. The injection mold for easy demolding according to claim 1, characterized in that, The connecting block (807) has a first inclined surface at one end located outside the guide rod (4).

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