Accurate positioning device for injection molding hole increasing and point entering

Abstract

The utility model relates to the technical field of positioning devices, in particular to a precise positioning device for an injection molding hole-increasing inlet point, which comprises a door frame, a lower mold component and an electric telescopic rod, the electric telescopic rod is fixedly connected to the inner side of the upper end of the door frame, the lower mold component is fixedly connected to the bottom end of the door frame, and an upper mold component is fixedly connected to the bottom end of the electric telescopic rod. The lower die assembly comprises a workbench, the top end of the workbench is fixedly connected with a lower die body, the inner side of the upper end of the lower die body is fixedly connected with a magnetic plate, the upper end of the workbench is fixedly connected with a hydraulic rod, one side of the hydraulic rod is fixedly connected with a correction plate, and a first steel ball is installed on the inner side of the correction plate. According to the injection mold, the deviation phenomenon of the movable mold and the fixed mold in the injection molding operation can be remarkably reduced, the situation that the guide positioning mechanism is damaged due to deviation of the upper mold body is prevented, and the service life of the mold is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, specifically a precise positioning device for injection molding cavity augmentation. Background Technology

[0002] Injection molding with multiple cavities refers to the use of a single mold with multiple cavities in injection mold design to improve production efficiency and reduce material waste. This method can produce multiple products in a single injection cycle, with each product produced from an independent cavity in the mold.

[0003] The injection molding cavity filling precision positioning device is a device specifically designed to improve the positioning accuracy of cavities during the injection molding process. This device uses automation technology to ensure that multiple cavities in the injection mold can be accurately positioned and filled, thereby improving production efficiency and product quality.

[0004] During the injection molding process of large molds, the inconsistent filling rates in all directions and the influence of the mold's own weight may cause the moving mold and the fixed mold to shift. This shift will generate additional lateral forces on the guide pillars, causing the guide pillars to be roughened or damaged when the mold is opened. In severe cases, it may even cause the guide pillars to bend or be cut off, making it impossible to open the mold. Therefore, a precise positioning device for injection molding cavity enhancement is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a precise positioning device for injection molding cavity filling points, in order to solve the problem that the moving mold and the fixed mold may be misaligned due to inconsistent filling rates in all directions and the influence of the mold's own weight. This misalignment will generate additional lateral force on the guide pillars, causing the guide pillars to be roughened or damaged on the surface when the mold is opened.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A precision positioning device for injection molding cavity enhancement includes a gantry, a lower mold assembly, and an electric telescopic rod. The electric telescopic rod is fixedly connected to the inner side of the upper end of the gantry, and the lower mold assembly is fixedly connected to the bottom end of the gantry. An upper mold assembly is fixedly connected to the bottom end of the electric telescopic rod. The lower mold assembly includes a worktable, with a lower mold body fixedly connected to the top of the worktable. A magnetic plate is fixedly connected to the inner side of the upper end of the lower mold body. A hydraulic rod is fixedly connected to the upper end of the worktable, and a correction plate is fixedly connected to one side of the hydraulic rod. A first steel rod is installed inside the correction plate. The hydraulic rod has a right-angled groove at one end. The upper mold assembly includes a column shell with a movable column groove on the inner side of the lower end of the column shell. The inner side of the lower end of the column shell is in contact with the bottom end of the second steel ball. The second steel ball is embedded in the inner side of the load-bearing plate. A spring is fixedly connected to the outer side of the load-bearing plate. A column is fixedly connected to the inner side of the load-bearing plate. The bottom end of the column is fixedly connected to the upper mold body. An injection tube is fixedly connected to the top end of the upper mold body. The bottom end of the electric telescopic rod is fixedly connected to the top end of the column shell. The outer side of the first steel ball is in contact with the outer side of the upper mold body.

[0008] As a further optimization of this utility model, the following features are provided: a limiting groove is provided on the inner side of the gantry; there are two gantry; the number of electric telescopic rods is the same as the number of gantry; the bottom end of the electric telescopic rod is fixedly connected to the top of the workbench; and the front and rear ends of the column shell slide within the groove of the gantry.

[0009] As a further optimization of this utility model, the following features are provided: a fixed bracket is installed on the upper end of the workbench near the hydraulic rod; the inner side of the bracket of the workbench is fixedly connected to the hydraulic rod; the tilt angle of the hydraulic rod when viewed from above is 45 degrees; and there are two of both the correction plate and the hydraulic rod.

[0010] As a further optimization of this utility model, the following features are provided: an injection hole is provided on the inner side of the upper end of the lower mold body, an injection hole is provided on the inner side of the lower end of the upper mold body, the injection holes of the upper mold body are vertically aligned with the injection holes of the worktable, an installation groove is provided on the inner side of the lower mold body near the magnetic plate, the number of magnetic plates inside the lower mold body is four, a magnetic plate is fixed inside the lower end of the upper mold body, and the magnetic plates of the upper mold body are vertically aligned with the magnetic plates of the lower mold body.

[0011] As a further optimization of this utility model, the right-angled groove is shaped like a right-angled triangle, a ball hole is provided on the inner side of the hydraulic rod near the first steel ball, and the right-angled groove of the hydraulic rod matches the apex of the magnetic plate.

[0012] As a further optimization of this utility model, the movable column groove is cylindrical in shape, and there is a gap between the movable column grooves of the column tube and the column shell. The column tube is hollow and has a through hole on the inner side of the upper mold body near the injection tube. The inner side of the injection tube is connected to the injection hole of the upper mold body through the through hole of the upper mold body.

[0013] As a further optimization of this utility model, one end of the spring is fixedly connected to the inner side of the column shell, a ball groove is opened on the inner side of the bearing plate near the second steel ball, a gap is provided between the top end of the upper mold body and the bottom end of the column shell, and the injection tube is installed inside the column cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In this invention, the electric telescopic rod, lower mold assembly, and upper mold assembly significantly reduce the offset of the moving mold and fixed mold during injection molding. Compared with traditional positioning methods, even if the mold body on the mold assembly shifts, the device can ensure that the guiding and positioning mechanism is not damaged. This improvement not only extends the service life of the mold but also reduces production interruptions and maintenance costs caused by mold failures, thereby improving production efficiency and economic benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the correction plate structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the lower mold body structure of this utility model;

[0019] Figure 4 For this utility model Figure 3 A schematic diagram of the structure at point A;

[0020] Figure 5 This is a cross-sectional structural diagram of the upper mold body of this utility model;

[0021] Figure 6 This is an exploded structural diagram of the mold assembly of this utility model.

[0022] In the diagram: 1. Gantry; 2. Electric telescopic pole;

[0023] 3. Lower mold assembly; 31. Worktable; 32. Lower mold body; 33. Magnetic plate; 34. Hydraulic rod; 35. Correction plate; 36. First steel ball; 37. Right-angle groove; 38. Injection hole;

[0024] 4. Upper mold assembly; 41. Column shell; 42. Movable column groove; 43. Upper mold body; 44. Column tube; 45. Support plate; 46. Spring; 47. Second steel ball; 48. Injection tube. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Please see Figure 1-6 This utility model provides a technical solution:

[0028] A precision positioning device for injection molding cavity enhancement includes a gantry 1, a lower mold assembly 3, and an electric telescopic rod 2. The electric telescopic rod 2 is fixedly connected to the inner side of the upper end of the gantry 1, the lower mold assembly 3 is fixedly connected to the bottom end of the gantry 1, and an upper mold assembly 4 is fixedly connected to the bottom end of the electric telescopic rod 2. The lower mold assembly 3 includes a worktable 31, a lower mold body 32 is fixedly connected to the top of the worktable 31, a magnetic plate 33 is fixedly connected to the inner side of the upper end of the lower mold body 32, a hydraulic rod 34 is fixedly connected to the upper end of the worktable 31, a correction plate 35 is fixedly connected to one side of the hydraulic rod 34, and a first steel ball 36 is installed inside the correction plate 35. One end of the pressure rod 34 has a right-angled groove 37. The upper mold assembly 4 includes a column shell 41. The inner side of the lower end of the column shell 41 has a movable column groove 42. The inner side of the lower end of the column shell 41 is in contact with the bottom end of the second steel ball 47. The second steel ball 47 is embedded in the inner side of the load-bearing plate 45. A spring 46 is fixedly connected to the outer side of the load-bearing plate 45. A column cylinder 44 is fixedly connected to the inner side of the load-bearing plate 45. The bottom end of the column cylinder 44 is fixedly connected to the upper mold body 43. The top end of the upper mold body 43 is fixedly connected to the injection tube 48. The bottom end of the electric telescopic rod 2 is fixedly connected to the top end of the column shell 41. The outer side of the first steel ball 36 is in contact with the outer side of the upper mold body 43.

[0029] As a further implementation of this solution, a limiting groove is provided on the inner side of the gantry 1. There are two gantry 1s, and the number of electric telescopic rods 2 is the same as the number of gantry 1s. The bottom end of the electric telescopic rod 2 is fixedly connected to the top of the workbench 31. The front end and rear end of the column shell 41 slide inside the groove of the gantry 1, which can drive the electric telescopic rod 2 to move the upper mold assembly 4 downward as a whole. Through the limiting of the column shell 41 and the gantry 1, the stability of the upper mold assembly 4 when it is raised and lowered can be improved.

[0030] As a further implementation of this solution, a fixed bracket is installed on the upper end of the workbench 31 near the hydraulic rod 34. The inner side of the bracket of the workbench 31 is fixedly connected to the hydraulic rod 34. The tilt angle of the hydraulic rod 34 when viewed from above is 45 degrees. There are two correction plates 35 and two hydraulic rods 34. An injection hole 38 is opened on the inner side of the upper end of the lower mold body 32. An injection hole 38 is opened on the inner side of the lower end of the upper mold body 43. The injection holes 38 of the upper mold body 43 are vertically aligned with the injection holes 38 of the workbench 31. An installation groove is opened on the inner side of the lower mold body 32 near the magnetic plate 33. There are four magnetic plates 33 inside the lower mold body 32. A magnetic plate 33 is fixed inside the lower end of the upper mold body 43. The magnetic plate 33 of the upper mold body 43 is aligned vertically with the magnetic plate 33 of the lower mold body 32. The right-angled groove 37 is shaped like a right-angled triangle. A ball hole is opened on the inner side of the hydraulic rod 34 near the first steel ball 36. The right-angled groove 37 of the hydraulic rod 34 fits with the apex of the magnetic plate 33. The hydraulic rod 34 drives the correction plate 35 to move, so that the upper mold body 43 and the lower mold body 32 are aligned vertically, thereby achieving the function of accurately positioning the two injection holes 38. The first steel ball 36 can reduce the friction when the upper mold body 43 moves downward.

[0031] As a further implementation of this solution, the movable groove 42 is cylindrical in shape. A gap is provided between the movable groove 42 opened between the column tube 44 and the column shell 41. The column tube 44 is hollow. A through hole is opened through the inner side of the upper mold body 43 near the injection tube 48. The inner side of the injection tube 48 is connected to the injection hole 38 of the upper mold body 43 through the through hole of the upper mold body 43. One end of the spring 46 is fixedly connected to the inner side of the column shell 41. A ball groove is opened on the inner side of the support plate 45 near the second steel ball 47. A gap is provided between the top end of the upper mold body 43 and the bottom end of the column shell 41. The injection tube 48 is installed inside the column tube 44, which can prevent the position between the upper mold body 43 and the lower mold body 32 from being unable to be adjusted due to wear of the external structure. By pressing the upper mold body 43 down on the column shell 41, the upper mold body 43 can be prevented from moving upward during injection.

[0032] Workflow: During injection molding, to prevent the upper mold body 43 from shifting and damaging the limiting mechanism, the electric telescopic rod 2 is activated to push the upper mold assembly 4 downwards. When the bottom of the upper mold body 43 is close to the top of the lower mold body 32, the magnetic plate 33 fixed at the bottom of the upper mold body 43 and the magnetic plate 33 at the top of the lower mold body 32 are magnetically attracted. Under the magnetic attraction between the magnetic plates 33, the upper mold body 43 can move. The upper mold body 43 drives the column cylinder 44 and the supporting plate 45 to move. The column cylinder 44 drives the second steel ball 47 to move. The second steel ball 47 rolls inside the bearing plate 45, reducing the friction between the column shell 41 and the bearing plate 45. Simultaneously, the bearing plate 45 compresses or pulls multiple springs 46, preventing the column cylinder 44 from rotating excessively inside the movable column groove 42. The movement of the upper mold body 43 prevents misalignment between the upper mold body 43 and the lower mold body 32 due to external structural wear. Furthermore, the magnetic plate 33 temporarily limits the position of the column shell 41, ensuring approximate alignment between the upper mold body 43 and the lower mold body 32. Before the mold body 43 contacts the lower mold body 32, the electric telescopic rod 2 stops moving, and the two hydraulic rods 34 are activated to push the two correction plates 35 to move, so that the corner of the lower mold body 32 and the upper mold body 43 is inside the right-angle groove 37. When the upper mold body 43 contacts the multiple first steel balls 36 at the same time, the position of the upper mold body 43 is corrected by the thrust of the correction plates 35 and the first steel balls 36, so that the upper mold body 43 and the lower mold body 32 coincide when viewed from above. After the two hydraulic rods 34 limit the upper mold body 43, When the electric telescopic rod 2 is activated, the upper mold assembly 4 moves downward again. When the bottom end of the upper mold body 43 is in contact with the top end of the lower mold body 32, the bottom end of the column shell 41 is in close contact with the top end of the upper mold body 43. At this time, the injection tube 48 of the upper mold body 43 and the injection hole 38 of the lower mold body 32 are precisely positioned. This working method can also prevent the upper mold body 43 from shifting due to inconsistent filling rates in all directions and the influence of the mold's own weight during injection. At the same time, the external positioning method can prevent the guide structure from being damaged due to the shift of the upper mold body 43.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision positioning device for injection molding cavity enhancement, comprising a gantry (1), a lower mold assembly (3), and an electric telescopic rod (2), characterized in that: An electric telescopic rod (2) is fixedly connected to the inner side of the upper end of the gantry (1), a lower mold assembly (3) is fixedly connected to the bottom end of the gantry (1), and an upper mold assembly (4) is fixedly connected to the bottom end of the electric telescopic rod (2). The lower mold assembly (3) includes a workbench (31), a lower mold body (32) is fixedly connected to the top of the workbench (31), a magnetic plate (33) is fixedly connected to the inner side of the upper end of the lower mold body (32), a hydraulic rod (34) is fixedly connected to the upper end of the workbench (31), a correction plate (35) is fixedly connected to one side of the hydraulic rod (34), a first steel ball (36) is installed on the inner side of the correction plate (35), and a right-angle groove (37) is opened at one end of the hydraulic rod (34). The upper mold assembly (4) includes a column. Shell (41), the inner side of the lower end of the shell (41) is provided with a movable column groove (42), the inner side of the lower end of the shell (41) is in contact with the bottom end of the second steel ball (47), the second steel ball (47) is embedded in the inner side of the load-bearing plate (45), the outer side of the load-bearing plate (45) is fixedly connected with a spring (46), the inner side of the load-bearing plate (45) is fixedly connected with a column cylinder (44), the bottom end of the column cylinder (44) is fixedly connected with an upper mold body (43), and the top end of the upper mold body (43) is fixedly connected with an injection tube (48). The bottom end of the electric telescopic rod (2) is fixedly connected to the top end of the column shell (41), and the outer side of the first steel ball (36) is attached to the outer side of the upper mold body (43).

2. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: The inner side of the gantry (1) is provided with a limiting groove. There are two gantry (1) and the number of electric telescopic rods (2) is the same as the number of gantry (1). The bottom end of the electric telescopic rod (2) is fixedly connected to the top of the workbench (31). The front end and rear end of the column shell (41) slide inside the groove of the gantry (1).

3. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: The workbench (31) is equipped with a fixed bracket at the upper end near the hydraulic rod (34). The inner side of the bracket of the workbench (31) is fixedly connected to the hydraulic rod (34). The hydraulic rod (34) has a tilt angle of 45 degrees when viewed from above. There are two of each of the correction plate (35) and the hydraulic rod (34).

4. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: The lower mold body (32) has an injection hole (38) on the inner side of its upper end, and the upper mold body (43) has an injection hole (38) on the inner side of its lower end. The injection hole (38) of the upper mold body (43) is aligned vertically with the injection hole (38) of the worktable (31). The lower mold body (32) has an installation groove on the inner side near the magnetic plate (33). The lower mold body (32) has four magnetic plates (33) inside. The upper mold body (43) has a fixed magnetic plate (33) inside its lower end. The magnetic plates (33) of the upper mold body (43) are aligned vertically with the magnetic plates (33) of the lower mold body (32).

5. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: The right-angled groove (37) is shaped like a right-angled triangle. The hydraulic rod (34) has a ball hole on the inner side near the first steel ball (36). The right-angled groove (37) of the hydraulic rod (34) matches the apex of the magnetic plate (33).

6. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: The movable column groove (42) is cylindrical in shape. There is a gap between the movable column groove (42) on the column tube (44) and the column shell (41). The column tube (44) is hollow. The upper mold body (43) has a through hole on the inner side near the injection tube (48). The inner side of the injection tube (48) is connected to the injection hole (38) of the upper mold body (43) through the through hole of the upper mold body (43).

7. The injection molding cavity augmentation precise positioning device according to claim 1, characterized in that: One end of the spring (46) is fixedly connected to the inner side of the column shell (41). The bearing plate (45) has a ball groove on the inner side near the second steel ball (47). There is a gap between the top of the upper mold body (43) and the bottom of the column shell (41). The injection tube (48) is installed inside the column cylinder (44).

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