Guide device for injection mold

Abstract

The utility model discloses a guide device for an injection mold, which relates to the technical field of injection molds, and comprises an upper mold frame and a lower mold frame, the bottom surface of the upper mold frame is fixedly connected with an upper mold, the top surface of the lower mold frame is fixedly connected with a lower mold, the top surface of the upper mold frame is provided with an injection molding port in a penetrating manner, and the injection molding port penetrates through the top surface of the upper mold. A discharging assembly is arranged on the bottom face of the lower die frame, and the upper die frame is connected with the lower die frame through a guide structure. When the limiting block on the bottom face of the guide column moves in the movable groove of the guide cylinder, the ball in the installation groove can roll, lubricating oil can be injected into the oil absorption sponge block and the oil absorption sponge ring through the oil injection hole, and after the lubricating oil is injected, the sealing column can be connected with the oil injection hole by rotating the rotary knob; and when the limiting block ascends, the limiting block extrudes the oil absorption sponge ring, the lubricating oil of the oil absorption sponge ring is extruded out, and therefore the surface of the guide column is lubricated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a guiding device for injection molds. Background Art

[0002] Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to injecting the heated and molten material into the mold cavity by high pressure, and obtaining a molded product after cooling and solidification. The injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise size. The guide pin guide mechanism uses the cooperation between the guide pin and the guide hole to ensure the matching accuracy of the mold.

[0003] The guide structure of an existing injection mold usually consists of a guide pin and a guide cylinder that cooperate with each other. When one of the molds is pushed, it can move toward the other mold through the guidance of the guide pin and the guide cylinder, thereby covering the other mold. When no thrust is received, the guide pin and the guide cylinder can be reset through a reset structure. However, during the use of the guide structure, the surface of the guide pin will continuously rub against the inner wall of the guide cylinder. As the use time increases, the guide structure will wear out too much, which can easily lead to problems such as inaccurate guidance and jamming, reducing the service life of the guide structure. Therefore, it is necessary to improve it. Utility Model Content

[0004] Technical issues solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a guide device for an injection mold.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a guiding device for an injection mold, comprising an upper mold frame and a lower mold frame, the bottom surface of the upper mold frame is fixedly connected to the upper mold, the top surface of the lower mold frame is fixedly connected to the lower mold, the top surface of the upper mold frame is penetrated by an injection port, and the injection port penetrates the top surface of the upper mold, the bottom surface of the lower mold frame is provided with a discharge assembly, and the upper mold frame is connected to the lower mold frame through a guiding structure.

[0008] As mentioned above, the unloading assembly includes a mounting frame, a telescopic cylinder and a top column. The mounting frame is fixedly mounted on the bottom surface of the lower mold frame, and the telescopic cylinder is fixedly mounted on the inner wall of the mounting frame through a connecting rod. The bottom surface of the lower mold frame passes through the lower mold and the top surface of the mounting frame to provide a plurality of holes, and the holes correspond one-to-one to the movable rods of the telescopic cylinders. The top surface of the telescopic cylinder is fixedly mounted with a top column, and the top column fits with the inner wall of the hole of the lower mold.

[0009] As mentioned above, the guide structure includes a guide column, a guide cylinder and a limit block. The four ends of the bottom surface of the upper mold frame are respectively fixedly installed with guide columns, and the four ends of the top surface of the lower mold frame are respectively fixedly installed with guide cylinders. The inner wall of the guide cylinder is provided with a movable groove, and the top surface is penetrated with an opening smaller than the movable groove. A limit block is placed on the inner wall of the movable groove of the guide cylinder. One end of the guide column passes through the top surface opening of the guide cylinder and is fixedly connected to the top surface of the limit block. The bottom surface and the top surface of the inner wall of the movable groove of the guide cylinder are both provided with self-lubricating components, the inner wall of the movable groove of the guide cylinder is provided with a rolling friction component, and the two ends of the mutual surfaces of the guide cylinder are respectively provided with oil injection components.

[0010] As mentioned above, a return spring is fixedly connected to the top surface of the lower mold frame, and one end of the return spring is fixedly connected to the bottom surface of the upper mold frame.

[0011] As mentioned above, the rolling friction assembly includes a mounting groove and a ball. The inner wall of the guide cylinder is evenly provided with a plurality of mounting grooves. The inner wall of the mounting groove is arc-shaped and is sleeved with a ball.

[0012] As mentioned above, the self-lubricating component includes an oil-absorbing sponge block and an oil-absorbing sponge ring. The oil-absorbing sponge block is fixedly installed on the bottom surface of the inner wall of the movable groove of the guide cylinder and fits with the inner wall of the movable groove. The oil-absorbing sponge ring is fixedly installed on the top surface of the inner wall of the movable groove of the guide cylinder.

[0013] As mentioned above, the oil filling assembly includes an oil filling hole, a knob and a sealing column. The upper and lower ends of the arc-shaped surface of the guide cylinder are penetrated with oil filling holes, the inner wall of the oil filling hole is provided with a thread, one end of the sealing column is fixedly connected with a knob, the arc-shaped surface of the sealing column is provided with a thread, and the sealing column is threadedly connected to the inner wall of the oil filling hole.

[0014] Beneficial effects:

[0015] Compared with the prior art, the guide device for injection mold has the following beneficial effects:

[0016] 1. The utility model is provided with an oil-absorbing sponge block, an oil-absorbing sponge ring, an oil filling hole, a knob, a sealing column, a mounting groove and a ball, so that when the limit block on the bottom surface of the guide column moves in the movable groove of the guide cylinder, the ball in the mounting groove can roll, thereby converting sliding friction into rolling friction, reducing the wear of the limit block, and lubricating oil can be injected into the oil-absorbing sponge block and the oil-absorbing sponge ring through the oil filling hole. After completion, the sealing column and the oil filling hole can be connected by rotating the knob to block the oil filling hole, so as to block the oil filling hole, when the limit block moves downward, the oil-absorbing sponge block will be squeezed, so that the lubricating oil absorbed by the oil-absorbing sponge block is squeezed out, and the limit block is lubricated, further reducing the wear of the limit block, and when the limit block rises, the oil-absorbing sponge ring will be squeezed, so that the lubricating oil absorbed by the oil-absorbing sponge ring is squeezed out, thereby lubricating the surface of the guide column, reducing the wear of the guide column, and extending the service life of the guide column.

[0017] 2. The utility model uses a telescopic cylinder and a push column to enable the molded part after injection molding and cooling to be driven by the telescopic cylinder to move upward, so that the push column pushes the molded part out of the lower mold for discharge, and when the movable rod of the telescopic cylinder is contracted, the push column can completely block the inner wall holes of the lower mold so that it will not affect the injection molding.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the mounting frame structure of the utility model;

[0021] Figure 3 This is a schematic cross-sectional structural diagram of the guide tube of the utility model;

[0022] Figure 4 For the utility model Figure 1 Schematic diagram of the locally enlarged structure of A in the middle.

[0023] In the figure: 1. upper mold frame; 2. lower mold frame; 3. upper mold; 4. lower mold; 5. mounting frame; 6. telescopic cylinder; 7. ejector column; 8. guide cylinder; 9. guide column; 10. reset spring; 11. limit block; 12. oil absorption sponge block; 13. oil absorption sponge ring; 14. oil filling hole; 15. knob; 16. sealing column; 17. ball bearing; 18. mounting groove. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-4As shown, the utility model provides a technical solution: a guiding device for an injection mold, comprising an upper mold frame 1 and a lower mold frame 2, the bottom surface of the upper mold frame 1 is fixedly connected to an upper mold 3, the top surface of the lower mold frame 2 is fixedly connected to a lower mold 4, the top surface of the upper mold frame 1 is penetrated by an injection port, and the injection port penetrates the top surface of the upper mold 3, the bottom surface of the lower mold frame 2 is provided with a discharge assembly, and the upper mold frame 1 is connected to the lower mold frame 2 through a guiding structure.

[0026] According to the overall structure of the device, the mounting frame 5 is fixed on the workbench, and lubricating oil is injected into the oil-absorbing sponge block 12 and the oil-absorbing sponge ring 13 through the oil filling hole 14. After completion, the sealing column 16 can be connected to the oil filling hole 14 by rotating the knob 15, thereby blocking the oil filling hole 14. At this time, the upper mold frame 1 is pressed down by the pressing device to move the guide column 9 in the guide cylinder 8, so that the upper mold 3 presses the lower mold 4. Since the ball 17 in the mounting groove 18 in the guide cylinder 8 can roll, the sliding friction is converted into rolling friction, thereby reducing the wear of the limit block 11. When the limit block 11 moves downward to squeeze the oil-absorbing sponge block 12, the lubricating oil absorbed by the oil-absorbing sponge block 12 is squeezed out to lubricate the limit block 11, further reducing the limit The wear of the limit block 11 is eliminated, and then injection molding is performed from the injection port on the top surface of the upper mold frame 1 through the injection molding device. When the injection molding is completed and cooled, the pressing device no longer presses the upper mold frame 1, and the upper mold frame 1 is reset through the guide column 9 and the reset spring 10. The molded part can be driven by the telescopic cylinder 6 to move the movable rod upward, so that the ejector column 7 ejects the molded part from the lower mold 4 for discharge, and when the movable rod of the telescopic cylinder 6 contracts, the ejector column 7 can completely block the inner wall holes of the lower mold 4 so that it will not affect the injection molding. At the same time, when the limit block 11 rises, it will squeeze the oil absorption sponge ring 13, and squeeze out the lubricating oil absorbed by the oil absorption sponge ring 13, thereby lubricating the surface of the guide column 9, reducing the wear of the guide column 9, and extending the service life of the guide column 9.

[0027] like Figure 2 As shown, the unloading assembly includes a mounting frame 5, a telescopic cylinder 6 and a top column 7. The mounting frame 5 is fixedly mounted on the bottom surface of the lower mold frame 2, and the telescopic cylinder 6 is fixedly mounted on the inner wall of the mounting frame 5 through a connecting rod. A plurality of holes are provided on the bottom surface of the lower mold frame 2, which penetrates the lower mold 4 and the top surface of the mounting frame 5, and the holes correspond one-to-one to the movable rods of the telescopic cylinder 6. The top surface of the telescopic cylinder 6 is fixedly mounted with a top column 7, and the top column 7 fits with the inner wall of the hole of the lower mold 4.

[0028] By means of the provided mounting frame 5, telescopic cylinder 6 and ejector column 7, the molded part can be driven by the telescopic cylinder 6 to move the movable rod upward, so that the ejector column 7 ejects the molded part from the lower mold 4 for discharge, and when the movable rod of the telescopic cylinder 6 contracts, the ejector column 7 can completely block the inner wall holes of the lower mold 4 so that it will not affect the injection molding.

[0029] like Figure 1-3As shown, the guide structure includes a guide column 9, a guide cylinder 8 and a limit block 11. The four ends of the bottom surface of the upper mold frame 1 are respectively fixedly installed with guide columns 9, and the four ends of the top surface of the lower mold frame 2 are respectively fixedly installed with guide cylinders 8. The inner wall of the guide cylinder 8 is provided with a movable groove, and the top surface is penetrated with an opening smaller than the movable groove. The limit block 11 is placed on the inner wall of the movable groove of the guide cylinder 8. One end of the guide column 9 passes through the top surface opening of the guide cylinder 8 and is fixedly connected to the top surface of the limit block 11. The bottom surface and the top surface of the inner wall of the movable groove of the guide cylinder 8 are both provided with self-lubricating components, the inner wall of the movable groove of the guide cylinder 8 is provided with a rolling friction component, and the two ends of the mutual surfaces of the guide cylinder 8 are respectively provided with oil injection components, and the top surface of the lower mold frame 2 is fixedly connected with a return spring 10, and one end of the return spring 10 is fixedly connected to the bottom surface of the upper mold frame 1.

[0030] By means of the guide column 9, guide cylinder 8, limit block 11 and return spring 10, when the pressing device presses the upper mold frame 1, the guide column 9 and the limit block 11 will move in the guide cylinder 8, so that the upper mold 3 presses the lower mold 4. When the pressing device no longer presses the upper mold frame 1, the guide column 9 and the limit block 11 can be reset by the return spring 10.

[0031] like Figure 3-4 As shown, the rolling friction component includes a mounting groove 18 and a ball 17, the inner wall of the guide cylinder 8 is evenly provided with a plurality of mounting grooves 18, the inner wall of the mounting groove 18 is arc-shaped, and the ball 17 is sleeved, the self-lubricating component includes an oil-absorbing sponge block 12 and an oil-absorbing sponge ring 13, the oil-absorbing sponge block 12 is fixedly installed on the bottom surface of the inner wall of the movable groove of the guide cylinder 8, and fits with the inner wall of the movable groove, the oil-absorbing sponge ring 13 is fixedly installed on the top surface of the inner wall of the movable groove of the guide cylinder 8, the oil filling component includes an oil filling hole 14, a knob 15 and a sealing column 16, the upper and lower ends of the arc-shaped surface of the guide cylinder 8 are penetrated by the oil filling hole 14, the inner wall of the oil filling hole 14 is provided with a thread, one end of the sealing column 16 is fixedly connected to the knob 15, the arc-shaped surface of the sealing column 16 is provided with a thread, and the sealing column 16 is threadedly connected to the inner wall of the oil filling hole 14.

[0032] By means of the mounting groove 18, the ball 17, the oil-absorbing sponge block 12, the oil-absorbing sponge ring 13, the oil filling hole 14, the knob 15 and the sealing column 16, lubricating oil can be injected into the oil-absorbing sponge block 12 and the oil-absorbing sponge ring 13 through the oil filling hole 14. After completion, the sealing column 16 can be connected to the oil filling hole 14 by rotating the knob 15, thereby blocking the oil filling hole 14. When the limit block 11 moves in the guide cylinder 8, the ball 17 in the mounting groove 18 in the guide cylinder 8 can roll, thereby The sliding friction is converted into rolling friction, which reduces the wear of the limit block 11. When the limit block 11 moves downward to squeeze the oil-absorbing sponge block 12, the lubricating oil absorbed by the oil-absorbing sponge block 12 is squeezed out to lubricate the limit block 11, further reducing the wear of the limit block 11. When the limit block 11 rises, it squeezes the oil-absorbing sponge ring 13 to squeeze out the lubricating oil absorbed by the oil-absorbing sponge ring 13, thereby lubricating the surface of the guide column 9, reducing the wear on the guide column 9 and extending the service life of the guide column 9.

[0033] Working principle: Fix the mounting frame 5 on the workbench, and inject lubricating oil into the oil-absorbing sponge block 12 and the oil-absorbing sponge ring 13 through the oil injection hole 14. After completion, the sealing column 16 can be connected to the oil injection hole 14 by rotating the knob 15, thereby blocking the oil injection hole 14. At this time, the upper mold frame 1 is pressed down by the pressing device to move the guide column 9 in the guide cylinder 8, so that the upper mold 3 presses the lower mold 4. Since the ball 17 in the mounting groove 18 in the guide cylinder 8 can roll, when the limit block 11 moves downward to squeeze the oil-absorbing sponge block 12, the oil absorbed by the oil-absorbing sponge block 12 The lubricating oil is extruded to lubricate the limit block 11, and then injection molding is performed from the injection port on the top surface of the upper mold frame 1 through the injection molding device. When the injection molding is completed and cooled, the pressing device no longer presses the upper mold frame 1, and the upper mold frame 1 is reset through the guide column 9 and the reset spring 10. The molded part can be driven by the telescopic cylinder 6 to move the movable rod upward, so that the ejector column 7 ejects the molded part from the lower mold 4 for discharge. At the same time, when the limit block 11 rises, it will squeeze the oil absorption sponge ring 13, and squeeze out the lubricating oil absorbed by the oil absorption sponge ring 13, thereby lubricating the surface of the guide column 9.

[0034] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0035] Although the 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 guide device for an injection mold, comprising an upper mold frame (1) and a lower mold frame (2), characterized in that: The bottom surface of the upper mold frame (1) is fixedly connected to an upper mold (3), the top surface of the lower mold frame (2) is fixedly connected to a lower mold (4), the top surface of the upper mold frame (1) is provided with an injection port, and the injection port passes through the top surface of the upper mold (3), the bottom surface of the lower mold frame (2) is provided with a discharge assembly, the upper mold frame (1) is connected to the lower mold frame (2) via a guide structure, the guide structure comprises a guide column (9), a guide cylinder (8) and a limit block (11), and the four ends of the bottom surface of the upper mold frame (1) are respectively fixedly installed with guide columns (9), the four ends of the top surface of the lower mold frame (2) are respectively fixedly mounted with guide cylinders (8), the inner wall of the guide cylinder (8) is provided with a movable groove, and the top surface is penetrated with an opening smaller than the movable groove, a limit block (11) is placed on the inner wall of the movable groove of the guide cylinder (8), one end of the guide column (9) passes through the top surface opening of the guide cylinder (8) and is fixedly connected to the top surface of the limit block (11), the bottom surface and the top surface of the inner wall of the movable groove of the guide cylinder (8) are both provided with self-lubricating components, and the inner wall of the movable groove of the guide cylinder (8) is provided with a roller The invention relates to a dynamic friction component, wherein the two ends of the mutual surface of the guide cylinder (8) are respectively provided with oil injection components, the rolling friction component comprises a mounting groove (18) and a ball (17), the inner wall of the guide cylinder (8) is evenly provided with a plurality of mounting grooves (18), the inner wall of the mounting groove (18) is arc-shaped, and the ball (17) is sleeved, the self-lubricating component comprises an oil-absorbing sponge block (12) and an oil-absorbing sponge ring (13), the oil-absorbing sponge block (12) is fixedly installed on the bottom surface of the inner wall of the movable groove of the guide cylinder (8), and is in contact with the inner wall of the movable groove, The oil-absorbing sponge ring (13) is fixedly mounted on the top surface of the inner wall of the movable groove of the guide cylinder (8); the oil filling assembly comprises an oil filling hole (14), a knob (15) and a sealing column (16); the upper and lower ends of the arc surface of the guide cylinder (8) are penetrated by oil filling holes (14); the inner wall of the oil filling hole (14) is provided with threads; one end of the sealing column (16) is fixedly connected to the knob (15); the arc surface of the sealing column (16) is provided with threads; the sealing column (16) is threadedly connected to the inner wall of the oil filling hole (14).

2. A guide device for an injection mold according to claim 1, characterized in that: The unloading assembly comprises a mounting frame (5), a telescopic cylinder (6) and a top column (7); the mounting frame (5) is fixedly mounted on the bottom surface of the lower mold frame (2); the telescopic cylinder (6) is fixedly mounted on the inner wall of the mounting frame (5) via a connecting rod; a plurality of holes are arranged on the bottom surface of the lower mold frame (2) penetrating the lower mold (4) and the top surface of the mounting frame (5), and the holes correspond to the movable rods of the telescopic cylinder (6) one by one; the top surface of the telescopic cylinder (6) is fixedly mounted with a top column (7), and the top column (7) fits with the inner wall of the hole of the lower mold (4).

3. The guide device for an injection mold according to claim 1, characterized in that: A return spring (10) is fixedly connected to the top surface of the lower mold frame (2), and one end of the return spring (10) is fixedly connected to the bottom surface of the upper mold frame (1).

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