Injection unit arrangement structure of three-color machine
By optimizing the layout of the injection units in the three-color injection machine, the problem of its large footprint was solved, enabling a miniaturized design that reduced costs and improved structural strength and stability.
Patent Information
- Application Number
- CN202511535589.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-01-02
AI Technical Summary
The existing three-color machine's structural design results in an excessively large footprint, increasing equipment costs.
The design employs a three-unit injection arrangement on the mold clamping head plate. Support is provided by a receiving groove in the injection channel. The hydraulic cylinders of the first injection unit are installed on both sides of the front plate of the injection stage, and the hydraulic cylinders of the second injection unit are installed below the front plate of the injection stage. This optimizes the layout of the injection units to reduce the floor space required.
It effectively reduces the footprint and equipment cost of the three-color die-cutting machine, while improving the structural strength of the die-cutting head plate and the stability of equipment operation.
Smart Images
Figure CN121246136A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of injection molding machines, in particular to an injection unit arrangement structure of a three-color machine. BACKGROUND
[0002] In the field of injection molding machines, a three-color machine (or three-color injection molding machine) is a special injection molding equipment that can simultaneously inject three different colors or materials in one production cycle. It achieves the molding of complex multi-color or multi-material products through the coordinated work of multiple injection units and molds, and is widely used in the manufacturing of products that require color matching, functional layering, or material combination.
[0003] Chinese utility model patent application No. 2022223097410 discloses a three-color injection molding machine mold changing system, which adds a set of injection units to the traditional two-color machine. The injection units are located on one side of the mold closing space and are perpendicular to the original two injection units of the two-color machine and extend in the perpendicular direction. The structure of the above-mentioned three-color machine greatly increases the floor area of the injection molding machine. The present application provides a new injection seat arrangement structure of a three-color machine to meet the requirement of small floor area and fill the corresponding market gap. SUMMARY
[0004] In order to reduce the floor area of the three-color machine, the present application provides an injection unit arrangement structure of a three-color machine.
[0005] The present application provides an injection unit arrangement structure of a three-color machine, which adopts the following technical solution: An injection unit arrangement structure of a three-color machine, comprising a mold closing head plate, two second injection units, and one first injection unit. The mold closing head plate is provided with an injection channel for the second injection units and the first injection unit to pass through from the same side during injection. The two second injection units are arranged with an installation interval in the direction of interval distribution. In the height direction, the projection of the first injection unit at least partially overlaps the projection of the installation interval.
[0006] By arranging three sets of injection units on the mold closing head plate, the injection molding machine provides three-color injection while reducing the floor area of the conventional two-color machine with a right-angle injection structure, making the overall volume of the three-color machine smaller. Additionally, one right-angle machine body is reduced, greatly reducing the equipment cost.
[0007] Optionally, the injection channel comprises: a receiving groove, the opening of the receiving groove is arranged away from the mold plate, and the receiving groove is adapted to the shape of the outer periphery of the second injection unit and the first injection unit; Injection holes, a plurality of the injection holes are arranged on the groove bottom of the accommodating groove, and the injection holes are used for penetrating the second injection unit and the first injection unit.
[0008] By adopting the technical scheme, the accommodating groove arranged in the injection channel does not penetrate the injection channel, so that the injection channel has a structure for supporting the mold head plate, thereby improving the structural strength of the mold head plate and enabling the accommodating groove arranged on the mold head plate to be as large as possible.
[0009] Optionally, along the direction in which the second injection units are spaced, the height of the first injection unit is greater than the height of the second injection unit.
[0010] Optionally, the first injection unit comprises a first injection base and a first injection front plate slidably mounted on the first injection base; the first injection front plate is located above the two second injection units, and the first injection base is vertically arranged in the mounting interval.
[0011] By adopting the technical scheme, the first injection unit can be mounted through the mounting interval, so that the first injection unit can avoid being mounted and supported only by the mold head plate or being supported by being connected to the second injection unit when the first injection unit is above the two-color injection machine, and the first injection unit has high freedom.
[0012] Optionally, the first injection unit further comprises a first whole-moving oil cylinder, the first whole-moving oil cylinder is symmetrically arranged on both sides of the first injection front plate, one end of the first whole-moving oil cylinder is connected to the mold head plate, and the other end of the first whole-moving oil cylinder is connected to the first injection front plate.
[0013] By adopting the technical scheme, since the first injection front plate is located above the second injection unit and the first injection base is located in the mounting interval, the first whole-moving oil cylinder is arranged on both sides of the first injection front plate to avoid increasing the width of the first injection base when the first whole-moving oil cylinder is mounted below.
[0014] Optionally, the second injection unit comprises a second injection base and a second injection front plate slidably mounted on the second injection base; the width of the first injection base is less than the width of the second injection base.
[0015] By adopting the technical scheme, the first injection base is specially designed to have a width smaller than that of the second injection base, thereby reducing the width of the first injection unit so that the first injection unit can be more easily mounted through the mounting interval.
[0016] Optionally, the width of the second injection base is not greater than the width of the second injection front plate.
[0017] By adopting the technical scheme, the first injection base is prevented from being interfered by the second injection base when being downwardly arranged in the installation interval.
[0018] Optionally, the second injection unit further comprises a second whole-moving oil cylinder, which is arranged on the top of the second injection base and below the second injection bench front plate.
[0019] By adopting the technical scheme, when the second whole-moving oil cylinder is arranged at the above position, the overall size of the second injection unit in the width direction is reduced, so that the size of the installation interval can be as large as possible.
[0020] Optionally, the two second injection units are arranged at the same horizontal height and symmetrically arranged on the two sides of the first injection unit.
[0021] By adopting the technical scheme, the second injection unit is symmetrically arranged, so that the injection base structure on the mold head plate is symmetrical, thereby improving the structural stability of the equipment during operation.
[0022] Optionally, the sliding direction of the second injection unit is parallel to the sliding direction of the first injection unit.
[0023] In summary, the present application has at least one of the following beneficial technical effects: 1. The injection unit arrangement structure of the three-color machine, by arranging three sets of injection bases on the mold head plate, the injection molding machine can provide three-color injection while reducing the floor area of the conventional double-color machine with a right-angle injection structure, so that the overall volume of the three-color machine is small, and one right-angle machine body is reduced, thereby greatly reducing the equipment cost. 2. By arranging the accommodating groove in the material injection channel to support the structure of the mold head plate, the structural strength of the mold head plate is improved, so that the accommodating groove arranged on the mold head plate can be as large as possible. 3. By arranging the first whole-moving oil cylinder on the two sides of the first injection bench front plate and arranging the second whole-moving oil cylinder below the second injection bench front plate and on the top of the second injection base, the width of the first injection base is small, and the overall size of the second injection unit in the width direction is small, thereby facilitating the installation of the first injection unit in the installation interval. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a whole structure schematic view of the injection unit arrangement structure of the three-color machine according to an embodiment of the present application; Figure 2 is a structure schematic view of the first injection unit according to an embodiment of the present application; Figure 3 is a structure schematic view of the second injection unit according to an embodiment of the present application; Figure 4is a structural schematic diagram of a mold clamping head plate of an embodiment of the present application; Figure 5 is a distribution schematic diagram of a second injection unit and a first injection unit of an embodiment of the present application on a mold clamping head plate.
[0025] The part names referred to by the respective numbers in the above figures are as follows: 1, mold clamping head plate; 11, material injection channel; 111, upper layer opening; 112, lower layer opening; 12, accommodating groove; 13, injection hole; 2, second injection unit; 21, second injection base; 22, second injection stage front plate; 23, second whole-moving oil cylinder; 3, first injection unit; 31, first injection base; 32, first injection stage front plate; 33, first whole-moving oil cylinder; 4, installation interval. DETAILED DESCRIPTION
[0026] The present application will be further described in detail below in combination with the drawings and embodiments.
[0027] An embodiment of the present application discloses an injection unit arrangement structure of a three-color machine.
[0028] Referring to Figure 1 , the injection unit arrangement structure of the three-color machine comprises a mold clamping head plate 1, a second injection unit 2, and a first injection unit 3. The second injection unit 2 and the first injection unit 3 are both mounted on the mold clamping head plate 1. Among them, the number of the second injection unit 2 is two, the number of the first injection unit 3 is one, and therefore the comprehensive number of injection seats is three, thereby forming a three-color machine structure.
[0029] Referring to Figure 1 and Figure 2 , the first injection unit 3 comprises a first injection base 31, a first injection stage front plate 32, and a first whole-moving oil cylinder 33. The first injection base 31 is supported on the ground or fixedly connected to the mold clamping head plate 1. In the embodiment, the first injection base 31 is supported on the ground, so that installation and maintenance are more convenient. The first injection stage front plate 32 is slidingly mounted on the top of the first injection base 31, and the first whole-moving oil cylinder 33 is used to drive the first injection stage front plate 32 to slide.
[0030] The number of the first whole-moving oil cylinder 33 is two, which is symmetrically mounted on both sides of the first injection stage front plate 32. One end of the first whole-moving oil cylinder 33 is fixedly connected to the mold clamping head plate 1, and the other end is connected to the first injection stage front plate 32. By applying force to the mold clamping head plate 1 through the first whole-moving oil cylinder 33, the first injection stage front plate 32 can slide on the first injection base 31 under the action of the reaction.
[0031] By mounting the first whole-moving oil cylinder 33 on both sides of the first injection stage front plate 32, the width of the first injection base 31 can be reduced.
[0032] Referring to Figure 1 andFigure 3 The second injection unit 2 comprises a second injection base 21, a second injection front plate 22 and a second integral moving oil cylinder 23. The second injection base 21 is supported on the ground or fixedly connected to the mold clamping head plate 1. In the embodiment, the second injection base 21 is supported on the ground, so that installation and maintenance are more convenient. The second injection front plate 22 is slidingly installed on the top of the second injection base 21, and the second integral moving oil cylinder 23 is used to drive the second injection front plate 22 to slide.
[0033] The number of the second integral moving oil cylinder 23 is one, which is located on the top of the second injection base 21 and below the second injection front plate 22. One end of the second integral moving oil cylinder 23 is fixedly connected to the mold clamping head plate 1, and the other end is connected to the second injection front plate 22. The mold clamping head plate 1 is forced by the second integral moving oil cylinder 23, and the second injection front plate 22 can slide on the second injection base 21 under the action of the reaction force.
[0034] In the embodiment, the width of the second integral moving oil cylinder 23 does not exceed the width of the second injection base 21, and the width of the second injection base 21 does not exceed the width of the second injection front plate 22, so that the overall width of the second injection unit 2 is smaller.
[0035] Referring to Figure 1 and Figure 4 The mold clamping head plate 1 is provided with a material injection channel 11 for the second injection unit 2 and the first injection unit 3 to pass through, and the material injection channel 11 comprises a receiving groove 12 and an injection hole 13.
[0036] The receiving groove 12 does not penetrate the mold clamping head plate 1, and the groove opening of the receiving groove 12 is away from the mold plate. The receiving groove 12 is matched with the outer peripheral shape of the second injection unit 2 and the first injection unit 3, which is in a triangular shape, comprising an upper layer opening 111 and a lower layer opening 112. The width of the upper layer opening 111 is smaller than the width of the lower layer opening 112, and the upper layer opening 111 is in communication with the lower layer opening 112.
[0037] The upper layer opening 111 corresponds to the first injection unit 3, and is used for the first injection unit 3 to pass through. The lower layer opening 112 corresponds to the second injection unit 2, and is used for the second injection unit 2 to pass through. Since the width of the lower layer opening 112 is larger, two second injection units 2 can pass through at the same time, so that the second injection units 2 are at the same horizontal height, and the sliding direction of the second injection units 2 is parallel to the sliding direction of the first injection unit 3.
[0038] The number of the injection hole 13 is multiple, which is arranged on the groove bottom of the receiving groove 12, and is used for the end of the second injection unit 2 and the end of the first injection unit 3 to pass through and be supported.
[0039] Referring to Figure 1 andFigure 5 According to the structure of the triangular accommodating groove 12 on the mold clamping head plate 1, the first injection unit 3 is located above the second injection unit 2 in the direction of the interval distribution of the second injection unit 2, and the height of the first injection unit 3 is greater than the height of the second injection unit 2. The second injection unit 2 is symmetrically located on both sides of the first injection unit 3, and the installation interval 4 for the first injection unit 3 is provided between the two second injection units 2 in the direction of the interval distribution. In the height direction, the projection of the first injection unit 3 at least partially overlaps the projection of the installation interval 4, so that the first injection unit 3 can be installed in the installation interval 4. Wherein, the first injection base 31 of the first injection unit 3 is vertically provided through the installation interval 4.
[0040] In the embodiment, the extension direction of the second injection unit 2 is perpendicular to the mold clamping head plate 1, and the interval distribution direction of the two second injection units 2 is parallel to the mold clamping head plate 1.
[0041] Referring to Figure 3 and Figure 5 In the embodiment, the first injection base 31 of the first injection unit 3 is specially designed, and the width of the first injection base 31 is less than the width of the second injection base 21, so that the first injection base 31 can pass through the narrow installation interval 4 and be installed.
[0042] At the same time, since the second integral moving oil cylinder 23 is not installed on both sides of the second injection base 22, the width of the installation interval 4 can be increased as much as possible.
[0043] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the scope of the present application shall be considered as falling within the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and refinements without departing from the principles of the present application shall be considered as falling within the protection scope of the present application.
Claims
1. An injection unit arrangement structure for a three-color injection molding machine, comprising a mold closing head plate (1), characterized in that, It also includes two second injection units (2) and one first injection unit (3). The mold head plate (1) has an injection channel (11) for the second injection unit (2) and the first injection unit (3) to pass through from the same side during injection. An installation interval (4) is provided between the two second injection units (2) along the direction of the interval distribution. In the height direction, the projection of the first injection unit (3) at least partially overlaps with the projection of the installation interval (4).
2. The injection unit arrangement structure of a three-color injection machine according to claim 1, characterized in that, The injection channel (11) includes: The receiving groove (12) is set away from the template, and the receiving groove (12) is adapted to the outer peripheral shape of the second injection unit (2) and the first injection unit (3). Injection holes (13), a plurality of injection holes (13) are provided at the bottom of the receiving groove (12), and the injection holes (13) are used to pass through the second injection unit (2) and the first injection unit (3).
3. The injection unit arrangement structure of a three-color injection machine according to claim 1, characterized in that, Along the direction of the interval distribution of the second injection units (2), the height of the first injection unit (3) is greater than the height of the second injection unit (2).
4. The injection unit arrangement structure of a three-color injection machine according to claim 3, characterized in that, The first injection unit (3) includes a first injection base (31) and a first injection stage front plate (32) slidably mounted on the first injection base (31); the first injection stage front plate (32) is located above the two second injection units (2), and the first injection base (31) is vertically inserted into the installation interval (4).
5. The injection unit arrangement structure of a three-color injection machine according to claim 4, characterized in that, The first injection unit (3) also includes a first aligning cylinder (33), which is symmetrically arranged on both sides of the first injection stage front plate (32). One end of the first aligning cylinder (33) is connected to the mold closing head plate (1), and the other end is connected to the first injection stage front plate (32).
6. The injection unit arrangement structure of a three-color injection machine according to claim 4, characterized in that, The second injection unit (2) includes a second injection base (21) and a second injection stage front plate (22) slidably mounted on the second injection base (21); the width of the first injection base (31) is smaller than the width of the second injection base (21).
7. The injection unit arrangement structure of a three-color injection machine according to claim 6, characterized in that, The width of the second injection base (21) does not exceed the width of the second injection stage front plate (22).
8. The injection unit arrangement structure of a three-color injection machine according to claim 6, characterized in that, The second injection unit (2) also includes a second transfer cylinder (23), which is located on top of the second injection base (21) and below the front plate (22) of the second injection stage.
9. The injection unit arrangement structure of a three-color injection machine according to claim 1, characterized in that, The two second injection units (2) are at the same horizontal level and are symmetrically located on both sides of the first injection unit (3).
10. The injection unit arrangement structure of a three-color injection machine according to claim 1, characterized in that, The sliding direction of the second injection unit (2) is parallel to the sliding direction of the first injection unit (3).