Injection molding machine light weight two-plate structure and injection molding machine

Abstract

The utility model discloses a kind of lightweight two-plate structure of injection molding machine and injection molding machine, belong to injection molding machine parts technical field, including base plate and support part, support part is set on the end surface of base plate, support part includes first supporting arm, second supporting arm, horizontal pull piece and through slot, one end of first supporting arm and one end of second supporting arm are connected with base plate, and first supporting arm and second supporting arm are respectively set close to the two sides of base plate, one end of horizontal pull piece is connected with the side wall of first supporting arm, the other end of horizontal pull piece is connected with the side wall of second supporting arm, first supporting arm and second supporting arm are divided into upper and lower two parts, through slot penetrates the other end of first supporting arm outward and the other end of second supporting arm outward, first supporting arm is divided into first shaft seat and second shaft seat, second supporting arm is also divided into third shaft seat and fourth shaft seat, first shaft hole is equipped on first shaft seat and second shaft seat, second shaft hole is equipped on third shaft seat and fourth shaft seat, greatly reduce the mass of lightweight two-plate structure, reduce processing and use cost.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine parts, specifically to a lightweight two-platen structure for injection molding machines and an injection molding machine. Background Technology

[0002] The fixed mold structure used on existing injection molding machines is made of a single piece of material. To ensure the stability of the injection molding machine, a conservative approach of "thickening and reinforcing" is often adopted, resulting in a large and heavy mold. For example, the material redundancy rate of the mold of a heavy-duty injection molding machine weighing over 100 tons can reach more than 20% without optimization. This not only increases steel consumption and the overall material cost of the machine, but also increases the machining workload of the heavy mold, leading to higher processing costs. Existing molds are prone to localized stress concentration under clamping and expansion forces. If the deformation at the injection port edge is too large, it will affect the molding accuracy of the product. For some high-precision injection molded products, the service life of the mold is shortened. In addition, the thick-walled structure of the mold prolongs the cooling time, slows down the production cycle, and the heavy mold increases the difficulty of equipment transportation and installation, indirectly increasing the customer's operating costs. Therefore, it is necessary to redesign the existing mold to meet the requirements of light weight and long service life. Utility Model Content

[0003] One of the purposes of this utility model is to provide a lightweight two-platen structure for injection molding machines, which solves the problems of existing lightweight two-platen structures for injection molding machines being heavy, prone to stress concentration, and easily deformed after long-term use.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A lightweight two-plate structure for an injection molding machine includes a base plate and a support portion. The support portion is disposed on one end face of the base plate and includes a first arm, a second arm, a cross brace, and a through groove. One end of the first arm and one end of the second arm are both connected to the base plate, and the first arm and the second arm are respectively positioned close to their respective sides of the base plate. One end of the cross brace is connected to the side wall of the first arm, and the other end of the cross brace is connected to the side wall of the second arm, dividing the first arm and the second arm into upper and lower parts. The through groove passes through the outward-facing end of the first arm and the second arm. The other end of the two arms facing outwards divides the first arm into a first bearing seat and a second bearing seat, and the second arm into a third bearing seat and a fourth bearing seat. The first and second bearing seats are provided with first shaft holes, and the third and fourth bearing seats are provided with second shaft holes. Movable mold components are connected to the first and second arms to complete the mold opening and closing action. The alignment of the installed mold is good, so that the overall force is evenly distributed. Supported by the two arms, the weight of the lightweight two-plate structure is greatly reduced, the ability to absorb vibration is improved, and the processing and use costs are also reduced.

[0006] Furthermore, it also includes a guide seat, which is set at the corner of the base plate. The guide seat has a guide rod hole and a fixing hole. The axis of the guide rod hole is perpendicular to the end face of the base plate, and the fixing hole is set on the side wall of the guide seat for connecting the guide rod.

[0007] Furthermore, it also includes a first weight reduction hole, which is configured to penetrate the lower part of the first arm and the lower part of the second arm, in order to further reduce the weight of the arm.

[0008] Furthermore, several first weight-reducing holes penetrate the lower part of the first arm and the lower part of the second arm to form a support rib structure on the first and second arms, which is used to support the connected moving parts.

[0009] Furthermore, it also includes a second weight-reducing hole, which penetrates the ribs of the supporting rib structure along an axis parallel to the first shaft hole, in order to reduce the overall weight of the arm and achieve the purpose of lightweighting.

[0010] Preferably, the bearing also includes a reinforcing part, which is disposed on the side wall of the first bearing, second bearing, third bearing and fourth bearing to improve the strength of each bearing and prevent breakage after long-term use.

[0011] More preferably, it also includes an annular groove, which is disposed on the outer side of the end face of the base plate. The annular groove surrounds the connection between the first arm and the second arm and the base plate, thereby increasing the strength of the bottom of the first arm and the second arm and reducing the overall weight.

[0012] More preferably, a positioning seat is also included. The positioning seat is disposed on a guide seat located on one side below the base plate. The positioning seat is disposed on the side wall of the guide seat and partially extends outside the base plate for determining orientation and positioning during installation.

[0013] More preferably, it also includes an assembly groove, which is provided on the back of the base plate. The assembly groove forms openings on two adjacent side walls of the base plate after being bent once, allowing for hoisting and installation from all directions and maintaining stability during movement.

[0014] The second objective of this utility model is to provide an injection molding machine that solves the problems of large weight, high operating costs, and difficult installation and transportation of existing injection molding machines.

[0015] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0016] An injection molding machine includes a lightweight two-platen structure, which reduces assembly difficulty and material consumption by reducing the weight of the injection molding machine components.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) The lightweight two-plate structure of the injection molding machine has a support part on the base plate. The support part is divided into two opposing arms. A horizontal tie is provided between the two arms to improve the load-bearing capacity and long-term stability of the two arms. Four shaft seats are formed by through holes on the two arms. Shaft holes are provided on the shaft seats to connect the movable mold parts. The assembly is convenient and the two arms are evenly stressed.

[0019] (2) The two arms of the lightweight two-plate structure of the injection molding machine are provided with weight reduction holes in both longitudinal and transverse directions. One of the weight reduction holes passes through the rib part in the middle of the support frame bar structure along the axial direction of the shaft hole. The weight reduction holes in both directions can reduce the overall weight of the lightweight two-plate structure. The two weight reduction holes can improve the ability to absorb impact and prevent the deformation of the arm part from affecting the accuracy of the action after long-term use. Attached Figure Description

[0020] Figure 1 Axonometric drawing of the lightweight two-plate structure for injection molding machines provided by this utility model;

[0021] Figure 2 This is a front view of the lightweight two-plate structure for injection molding machines provided by this utility model;

[0022] Figure 3 This is a side view of the lightweight two-plate structure for injection molding machines provided by this utility model;

[0023] Figure 4 This is a top view of the lightweight two-plate structure for injection molding machines provided by this utility model;

[0024] Figure 5 This is a rear view of the lightweight two-platen structure for injection molding machines provided by this utility model;

[0025] Figure 6 for Figure 2 Cross-sectional view along the upper AA line;

[0026] Figure 7 for Figure 3 Cross-sectional view along the upper BB line.

[0027] Figure label:

[0028] 1. Base plate; 2. Guide seat; 21. Guide rod hole; 22. Fixing hole; 23. Positioning seat; 3. Support part; 31. First support arm; 311. First shaft seat; 312. Second shaft seat; 313. First shaft hole; 32. Second support arm; 321. Third shaft seat; 322. Fourth shaft seat; 323. Second shaft hole; 324. Reinforcing part; 33. Through groove; 4. Annular groove; 5. Horizontal tie; 51. Mounting hole; 6. First weight reduction hole; 7. Assembly groove; 8. Second weight reduction hole. Detailed Implementation

[0029] 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 in the application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] Example 1

[0031] like Figures 1-7 As shown, this embodiment discloses a lightweight two-plate structure for an injection molding machine, including a base plate 1 and a support part 3. The support part 3 is disposed on one end face of the base plate 1 and includes a first support arm 31, a second support arm 32, a cross brace 5, and a through groove 33. One end of the first support arm 31 and one end of the second support arm 32 are both connected to the base plate 1, and the first support arm 31 and the second support arm 32 are respectively disposed close to the two sides of the base plate 1. One end of the cross brace 5 is connected to the side wall of the first support arm 31, and the other end of the cross brace 5 is connected to the side wall of the second support arm 32, dividing the first support arm 31 and the second support arm 32 into upper and lower parts. Along the lower part of the first support arm 31 and the second support arm 32 upwards, the cross-section gradually decreases. The design is small, reducing weight while ensuring load-bearing capacity. The through groove 33 extends through the outward end of the first arm 31 and the outward end of the second arm 32, dividing the first arm 31 into a first bearing seat 311 and a second bearing seat 312, and the second arm 32 into a third bearing seat 321 and a fourth bearing seat 322. The through groove 33 divides the first arm 31 and the second arm 32 in the middle, so that the movable mold part can be evenly stressed after installation. At the same time, the centering during installation is high and it is easy to assemble and position. The first bearing seat 311 and the second bearing seat 312 are provided with a first shaft hole 313, and the third bearing seat 321 and the fourth bearing seat 322 are provided with a second shaft hole 323 for connecting movable parts.

[0032] The first arm 31 and the second arm 32 extend to the side without exceeding the side projection range of the base plate 1. The first arm 31 and the second arm 32 form an angle, which is an acute angle, so that the pressure can be dispersed towards the base plate 1 when subjected to disturbance and impact. At the same time, it can also expand the movement stroke after connecting the mold. The connection between the first arm 31 and the second arm 32 and the base plate 1 is a rounded transition to prevent stress concentration during casting and under force.

[0033] Furthermore, it also includes a guide seat 2, which is set at the corner of the base plate 1. The guide seat 2 is provided with a guide rod hole 21 and a fixing hole 22. The axis of the guide rod hole 21 is perpendicular to the end face of the base plate 1. The fixing hole 22 is set on the side wall of the guide seat 2. The guide rod is inserted into the guide rod hole 21 and then the fixing part is installed in the fixing hole 22 for positioning. The guide rod is used to guide the movable mold part. The guide rod hole 21 can adjust the insertion depth of the guide rod.

[0034] Furthermore, it also includes a first weight reduction hole 6, which is configured to penetrate the lower part of the first support arm 31 and the lower part of the second support arm 32, so that the lower part of the first support arm 31 and the lower part of the second support arm 32 form a supporting rib structure. By reducing the weight of the lower part of the support arm, the overall mass is reduced and the ability to absorb vibration is improved.

[0035] Preferably, a plurality of first weight-reducing holes 6 penetrate the lower part of the first support arm 31 and the lower part of the second support arm 32 to form a support rib structure on the first support arm 31 and the second support arm 32. The support rib structure is composed of multiple parallel ribs. By reducing the weight of the lower part of the support arm, the overall mass is reduced and the ability to absorb vibration is improved, preventing deformation and cracking caused by stress concentration.

[0036] Furthermore, it also includes a second weight reduction hole 8, which penetrates the ribs of the supporting rib structure along the axis parallel to the first shaft hole 313. The second weight reduction hole 8 does not penetrate the ribs near the outer side to prevent interference with the guide seat 2. The second weight reduction hole 8 further reduces the overall mass of the lightweight two-plate structure and improves its vibration absorption capacity.

[0037] Preferably, it further includes a reinforcing part 324, which is disposed on the sidewalls of the first bearing seat 311, the second bearing seat 312, the third bearing seat 321 and the fourth bearing seat 322. The reinforcing part 324 is disposed along the height direction of the support arm and is disposed on the upper part of the support arm. The top end of the reinforcing part 324 does not exceed the axis of the shaft hole, and the reinforcing parts 324 are disposed opposite to each other. The reinforcing part 324 improves the strength of the shaft hole portion, improves the bearing capacity of the shaft hole, and prevents it from cracking under stress.

[0038] More preferably, it also includes an annular groove 4, which is disposed on the outer side of the end face of the base plate 1. The annular groove 4 surrounds the connection between the first support arm 31 and the second support arm 32 and the base plate 1. The annular groove 4 reduces the thickness of the base plate 1, thereby reducing weight.

[0039] More preferably, it also includes a positioning seat 23, which is disposed on a guide seat 2 located on one side below the base plate 1. The positioning seat 23 is disposed on the side wall of the guide seat 2 and partially extends out of the base plate 1. The positioning seat 23 is provided with positioning holes for positioning during installation.

[0040] More preferably, it also includes an assembly groove 7, which is disposed on the back of the base plate 1. The two ends of the assembly groove 7 after a bend form openings on two adjacent side walls of the base plate 1. The cross-section of the assembly groove 7 is set in the shape of a "T". The assembly groove 7 is distributed in all directions of the base plate 1, so that the force can be evenly distributed during hoisting and installation, thereby improving the stability during transportation and installation.

[0041] More preferably, a through mounting hole 11 is provided in the middle of the base plate 1, and the mounting hole 11 is used for assembly.

[0042] The installation process of this lightweight two-platen structure for injection molding machines is as follows:

[0043] Insert the hook into the assembly slot 7, move the lightweight two-plate structure to the injection molding machine platform, determine the installation direction by the positioning hole on the positioning seat 23, install the lightweight two-plate structure on the machine platform, insert the guide rod into the guide rod hole 21 and fix it with fasteners, then install the movable part of the mold into the shaft hole and fix it with the pin.

[0044] Example 2

[0045] This embodiment also discloses an injection molding machine, including a lightweight two-platen structure. The lightweight two-platen structure is connected to the movable part of the mold to complete the opening and closing action of the mold.

[0046] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and any modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A lightweight two-plate structure for an injection molding machine, comprising a base plate (1) and a support part (3), wherein the support part (3) is disposed on one end face of the base plate (1), characterized in that: The support part (3) includes a first arm (31), a second arm (32), a horizontal tie (5), and a through groove (33). One end of the first arm (31) and one end of the second arm (32) are connected to the base plate (1), and the first arm (31) and the second arm (32) are respectively arranged close to the two sides of the base plate (1). One end of the horizontal tie (5) is connected to the side wall of the first arm (31), and the other end of the horizontal tie (5) is connected to the side wall of the second arm (32), thus connecting the first arm (31) and the second arm (32). The first arm (31) is divided into upper and lower parts. The through groove (33) passes through the other end of the first arm (31) and the other end of the second arm (32) facing outwards, dividing the first arm (31) into the first bearing seat (311) and the second bearing seat (312). The second arm (32) is also divided into the third bearing seat (321) and the fourth bearing seat (322). The first bearing seat (311) and the second bearing seat (312) are provided with the first shaft hole (313), and the third bearing seat (321) and the fourth bearing seat (322) are provided with the second shaft hole (323).

2. The lightweight two-platen structure for injection molding machines according to claim 1, characterized in that: It also includes a guide seat (2), which is located at the corner of the base plate (1). The guide seat (2) has a guide rod hole (21) and a fixing hole (22). The axis of the guide rod hole (21) is perpendicular to the end face of the base plate (1), and the fixing hole (22) is located on the side wall of the guide seat (2).

3. The lightweight two-platen structure for injection molding machines according to claim 2, characterized in that: It also includes a first weight reduction hole (6), which is configured to penetrate the lower part of the first arm (31) and the lower part of the second arm (32).

4. The lightweight two-platen structure for injection molding machines according to claim 3, characterized in that: Several first weight-reducing holes (6) penetrate the lower part of the first arm (31) and the lower part of the second arm (32) to form a support rib structure on the first arm (31) and the second arm (32), the support rib structure including several spaced ribs.

5. The lightweight two-platen structure for injection molding machines according to claim 4, characterized in that: It also includes a second weight-reducing hole (8), which penetrates the rib in the support rib structure along the axis parallel to the first shaft hole (313).

6. The lightweight two-platen structure for injection molding machines according to any one of claims 1-5, characterized in that: It also includes a reinforcing part (324), which is provided on the side wall of one or more of the first bearing seat (311), the second bearing seat (312), the third bearing seat (321), and the fourth bearing seat (322).

7. The lightweight two-platen structure for injection molding machines according to claim 6, characterized in that: It also includes an annular groove (4), which is located on the outer side of the end face of the base plate (1). The annular groove (4) surrounds the connection between the first arm (31) and the second arm (32) and the base plate (1).

8. The lightweight two-platen structure for injection molding machines according to claim 2, characterized in that: It also includes a positioning seat (23), which is set on a guide seat (2) located on the side below the base plate (1). The positioning seat (23) is set on the side wall of the guide seat (2) and extends partially to the outside of the base plate (1).

9. The lightweight two-platen structure for injection molding machines according to claim 1, characterized in that: It also includes an assembly groove (7), which is set on the back of the base plate (1). The two ends of the assembly groove (7) after a bend form openings on the two adjacent side walls of the base plate (1).

10. An injection molding machine comprising the lightweight two-platen structure of any one of claims 1-9.

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