Positioning tool for mold injection molding machining

Abstract

The utility model relates to a positioning tool for mould injection processing, which comprises an upper mould plate and a lower mould plate, the bottom of the upper mould plate is provided with an upper mould cavity, the top of the lower mould plate is provided with a lower mould cavity matched with the upper mould cavity, and the top of the upper mould plate is provided with an injection molding pipe extending into the upper mould cavity. Positioning mechanisms are installed at the four corners of the upper die plate, positioning grooves used in cooperation with the positioning mechanisms are formed in the four corners of the top of the lower die plate, and each positioning mechanism comprises a positioning rod with the bottom of a conical structure. And the positioning rod is replaced by a new positioning rod, thereby being more convenient for people to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold injection molding processing, and particularly relates to a positioning tool for mold injection molding processing. Background Art

[0002] An injection mold is a tool used to produce plastic products and to give them a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain complex-shaped parts. Specifically, it involves injecting heated, molten plastic into the mold cavity under high pressure using an injection molding machine. After cooling and solidification, a molded product is obtained. Injection molds have high operating efficiency and are often used for the processing of batch items.

[0003] In order to make the positioning between the upper template and the lower template more accurate during the mold injection molding process, a positioning rod will be installed on the upper template. Referring to the injection mold with a guide positioning function with reference to the announcement number CN215703603U, this patent installs a positioning rod at the bottom of the lifting plate during use. When the lifting plate moves downward, it will drive the sliding sleeve to slide along the support rod. At the same time, the positioning rod will be inserted into the interior of the positioning socket along the positioning block, thereby effectively preventing the mold position from shifting. However, the positioning rod will be damaged during long-term use. If it continues to be used, the accuracy of the mold closing will be reduced, resulting in failure to close the mold normally. Since the positioning rod is integrated with the lifting plate, the damaged positioning rod cannot be replaced. At this time, a new mold needs to be manufactured for injection molding production, which will not only extend the production time but also increase the production cost. Utility Model Content

[0004] The purpose of the present invention is to provide a positioning tool for mold injection molding with a simple structure and reasonable design in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A positioning tool for mold injection molding, including an upper template and a lower template, wherein a positioning mechanism is installed at the four corners of the upper template, and a positioning groove used in conjunction with the positioning mechanism is provided at the four corners of the top of the lower template. The positioning mechanism includes a positioning rod with a conical structure at the bottom, and multiple groups of positioning components installed on the outside of the positioning rod. The positioning rod is installed on the upper template through a fixing mechanism. The fixing mechanism includes a nut, a screw installed on the top of the positioning rod and used in conjunction with the nut, a limit block installed on the outside of the positioning rod, a first limit groove opened at the bottom of the upper template and used in conjunction with the limit block, and a first installation groove opened on one side of the first limit groove and passing through to the top of the upper template and used in conjunction with the positioning rod.

[0007] As a further optimization scheme of the present invention, the positioning assembly includes a second mounting groove opened on the outside of the positioning rod, a skateboard slidably connected to the second mounting groove, a spring installed between one side of the skateboard and the inner wall of the second mounting groove, a mounting frame installed on the other side of the skateboard, and a roller rotatably connected to the mounting frame.

[0008] As a further optimization solution of the present invention, fixing grooves are provided on both inner walls of the second installation groove, a limiting rod is installed inside the fixing groove, and a limiting plate is sleeved on the outside of the limiting rod and fixedly connected to one side of the slide.

[0009] As a further optimization solution of the present invention, the positioning groove includes a bell mouth opened at the top of the lower template, and a second limiting groove opened at the bottom of the bell mouth and used in conjunction with the positioning rod.

[0010] As a further optimization solution of the present invention, an upper mold cavity is provided at the bottom of the upper mold plate, a lower mold cavity used in conjunction with the upper mold cavity is provided at the top of the lower mold plate, and an injection tube extending into the upper mold cavity is installed on the top of the upper mold plate.

[0011] As a further optimization solution of the present invention, the diameter of the bell mouth is larger than the diameter of the positioning rod.

[0012] The beneficial effect of the utility model is that when the positioning rod is damaged during use, the positioning rod can be directly removed from the upper template and replaced with a new one, thereby making it more convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a first three-dimensional structural diagram of the present utility model;

[0014] Figure 2 This is a second three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a third three-dimensional structural diagram of the present utility model;

[0016] Figure 4 This is a schematic structural diagram of the positioning mechanism of the utility model;

[0017] Figure 5 This is a schematic cross-sectional view of the positioning rod of the present utility model;

[0018] Figure 6 This utility model Figure 5 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 7 This utility model Figure 1 Schematic diagram of the cross-section structure in.

[0020] In the figure: 1. Upper template; 2. Lower template; 3. Lower mold cavity; 4. Injection tube; 5. Nut; 6. First limiting groove; 7. Upper mold cavity; 8. Positioning rod; 9. Limit block; 10. Roller; 11. Second mounting groove; 12. Spring; 13. Slide plate; 14. Mounting frame; 15. Limit rod; 16. Limit plate; 17. Second limiting groove; 18. Bell mouth; 19. Screw; 20. First mounting groove. DETAILED DESCRIPTION

[0021] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] like Figure 1 - Figure 7 As shown, a positioning tool for mold injection molding includes an upper template 1 and a lower template 2. The bottom of the upper template 1 is provided with an upper mold cavity 7, and the top of the lower template 2 is provided with a lower mold cavity 3 used in conjunction with the upper mold cavity 7. The top of the upper template 1 is equipped with an injection tube 4 extending into the upper mold cavity 7. Positioning mechanisms are installed at the four corners of the upper template 1, and positioning grooves used in conjunction with the positioning mechanisms are provided at the four corners of the top of the lower template 2. The positioning mechanism includes a positioning rod 8 with a conical structure at the bottom, and multiple groups of positioning components installed on the outside of the positioning rod 8. The positioning groove includes a bell mouth 18 opened at the top of the lower template 2 and a bell mouth 18 opened at the bell mouth. 18 is provided at the bottom of the upper template 1 and is used in conjunction with the second limiting groove 17 of the positioning rod 8. The positioning rod 8 is installed on the upper template 1 through a fixing mechanism. The fixing mechanism includes a nut 5, a screw 19 installed on the top of the positioning rod 8 and used in conjunction with the nut 5, a limiting block 9 installed on the outside of the positioning rod 8, a first limiting groove 6 opened at the bottom of the upper template 1 and used in conjunction with the limiting block 9, and a first installation groove 20 opened on one side of the first limiting groove 6 and passing through the top of the upper template 1 and used in conjunction with the positioning rod 8. Since the bottom of the positioning rod 8 is a conical structure, the upper template 1 and the lower template 2 can still be inserted into the positioning groove when they are offset.

[0024] It should be noted that when using this positioning tool for mold injection molding, when the damaged positioning rod 8 needs to be disassembled and replaced, the nut 5 can be directly screwed, and the nut 5 can be unscrewed from the screw 19. The positioning rod 8 can be directly removed by pulling the positioning rod 8 from the bottom of the upper template 1. When the positioning rod 8 needs to be installed on the upper template 1, one end of the screw 19 is passed through the limiting groove 17 and extended to the top of the upper template 1. At this time, the limiting block 9 will be located in the limiting groove 6, and the nut 5 is screwed on the outside of the screw 19 until one side of the nut 5 is tightly fitted with the top of the upper template 1, and the installation of the positioning mechanism is completed.

[0025] Example 2

[0026] like Figure 1 - Figure 7 As shown, the difference between this embodiment and embodiment 1 is that: the positioning assembly includes a second mounting groove 11 opened on the outside of the positioning rod 8, a slide plate 13 slidably connected to the second mounting groove 11, a spring 12 installed between one side of the slide plate 13 and the inner wall of the second mounting groove 11, a mounting frame 14 installed on the other side of the slide plate 13, and a roller 10 rotatably connected to the mounting frame 14, and the inner walls on both sides of the second mounting groove 11 are provided with a fixing groove, and a limiting rod 15 is installed inside the fixing groove. The outer part of the limiting rod 15 is provided with a limiting plate 16 fixedly connected to one side of the slide plate 13, and the diameter of the bell mouth 18 is larger than the diameter of the positioning rod 8, so that it is convenient for the roller 10 to slide into the second limiting groove 17.

[0027] The further improved feature of this embodiment is that: when the positioning rod 8 is inserted into the interior of the second limiting groove 17, multiple rollers 10 will move toward the interior of the second mounting groove 11 along the inclination of the bell mouth 18. At this time, the mounting frame 14 will push the slide plate 13, causing the slide plate 13 to squeeze the spring 12, thereby sliding into the second limiting groove 17. In this way, even if the second limiting groove 17 is worn and a gap is created between the positioning rod 8, better positioning can be performed. At the same time, the upper template 1 and the lower template 2 are guided by the contraction of the roller 10, thereby reducing the stress and deformation of the positioning rod 8 after the upper template 1 and the lower template 2 are misaligned, thereby extending the service life of the positioning rod 8.

[0028] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A positioning tool for mold injection molding, comprising an upper template (1) and a lower template (2), characterized in that: The upper template (1) is provided with positioning mechanisms at the four corners thereof, and the top four corners of the lower template (2) are provided with positioning grooves for use with the positioning mechanisms. The positioning mechanism comprises a positioning rod (8) with a conical bottom structure, and a plurality of positioning components mounted on the outside of the positioning rod (8). The positioning rod (8) is mounted on the upper template (1) through a fixing mechanism. The fixing mechanism comprises a nut (5), a screw (19) mounted on the top of the positioning rod (8) and for use with the nut (5), a limiting block (9) mounted on the outside of the positioning rod (8), a first limiting groove (6) provided at the bottom of the upper template (1) and for use with the limiting block (9), and a first mounting groove (20) provided on one side of the first limiting groove (6) and extending through the top of the upper template (1) and for use with the positioning rod (8).

2. A positioning tool for mold injection molding according to claim 1, characterized in that: The positioning assembly includes a second mounting groove (11) provided on the outside of the positioning rod (8), a slide plate (13) slidably connected to the second mounting groove (11), a spring (12) installed between one side of the slide plate (13) and the inner wall of the second mounting groove (11), a mounting frame (14) installed on the other side of the slide plate (13), and a roller (10) rotatably connected to the mounting frame (14).

3. A positioning tool for mold injection molding according to claim 2, characterized in that: The inner walls on both sides of the second installation groove (11) are provided with fixing grooves, the interior of the fixing grooves is provided with a limiting rod (15), and the exterior of the limiting rod (15) is provided with a limiting plate (16) fixedly connected to one side of the slide plate (13).

4. The positioning tool for mold injection molding according to claim 1, characterized in that: The positioning groove comprises a bell mouth (18) provided at the top of the lower template (2), and a second limiting groove (17) provided at the bottom of the bell mouth (18) and used in conjunction with the positioning rod (8).

5. The positioning tool for mold injection molding according to claim 1, characterized in that: An upper mold cavity (7) is provided at the bottom of the upper mold plate (1), a lower mold cavity (3) used in conjunction with the upper mold cavity (7) is provided at the top of the lower mold plate (2), and an injection tube (4) extending into the upper mold cavity (7) is installed at the top of the upper mold plate (1).

6. The positioning tool for mold injection molding according to claim 4, characterized in that: The diameter of the bell mouth (18) is larger than the diameter of the positioning rod (8).

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