Injection molding machine for manufacturing plastic parts

Abstract

The utility model discloses an injection molding machine for manufacturing plastic parts, which comprises an operating platform, a movable template, a fixed template and a driving device, wherein the upper end of the operating platform is provided with the movable template and the fixed template, and the driving device drives the movable template to be close to or far away from the fixed template; mounting grooves for fixing the mold are formed in the opposite sides of the movable mold plate and the fixed mold plate; the other side of the movable mold plate is connected with a push-pull plate; the driving device comprises a fixed seat, a power source and a connecting mechanism, the fixed seat is connected with the connecting upper end of the operating table, the power source is mounted on the fixed seat, the output end of the power source is connected with a sliding block, and the movable mold plate is connected with the fixed seat through the matching of the sliding block and the connecting mechanism. The coincidence performance of the movable mold plate and the fixed mold plate in long-time work is guaranteed, and the situation that a gap is formed between the movable mold and the fixed mold, and materials leak out in the injection molding process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic product production, in particular to an injection molding machine used for producing plastic parts. Background Art

[0002] The injection molding machine uses high temperature to melt plastic particles, spray them into a mold, and then cool and shape them to form a product with the same structure as the inner cavity of the mold. It is an extremely efficient equipment for producing plastic toys, equipment covers, etc.

[0003] The clamping mechanism of an injection molding machine usually consists of a movable mold and a fixed mold. The mold is locked by applying high pressure to the molten plastic so that the molten plastic can be stamped and formed.

[0004] A Chinese patent with publication number CN202210840790.9 discloses a driving device for a pre-plasticizing mechanism of an injection molding machine, including a motor, an input spiral bevel gear with a shaft, an output spiral bevel gear, an output shaft, and a box body. The motor is connected to the input spiral bevel gear, the output spiral bevel gear is fixed on the output shaft, the input spiral bevel gear and the output shaft are supported by bearings on the box body, the input spiral bevel gear and the output spiral bevel gear are meshed with each other, and the input spiral bevel gear and the output shaft are perpendicular to each other.

[0005] For another example, the Chinese patent with publication number CN202322086218.0 discloses a mold clamping mechanism for an injection molding machine, including a support table, a fixed seat is fixedly installed on the upper side of the support table, a fixed template is arranged on the right side of the fixed seat, a movable template is arranged between the fixed seat and the fixed template, a uniformly distributed first spring is fixedly connected to the right side of the fixed template, a buffer seat is fixedly installed on the rear side of the first spring, the buffer seat is fixedly installed on the upper side of the support table, a mold clamping support assembly is installed on the upper side of the fixed seat and the movable template, a hydraulic cylinder is fixedly installed between the fixed seat and the movable template, a mounting plate is fixedly installed on the outer side of the hydraulic cylinder, and a first groove is opened on the outer side of the fixed seat and the fixed template.

[0006] As the applicant conducted further research, it was found that due to defects in the supporting assembly of the technical solution, although the movable mold plate can be exerted with force and pushed, the force acting on the movable mold plate is only on one side or one point. During long-term use, the movable mold plate has a certain degree of offset, resulting in the movable mold and the fixed mold being unable to overlap, affecting the normal injection molding operation. Utility Model Content

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] Injection molding machines for plastic parts production, including:

[0009] An operating table, the upper end of which is provided with a movable platen, a fixed platen and a driving device for driving the movable platen to approach or move away from the fixed platen;

[0010] The movable mold plate and the fixed mold plate have mounting grooves for fixing the mold on opposite sides thereof;

[0011] The other side of the movable template is connected with a push-pull plate;

[0012] The driving device includes a fixed seat connected to the upper end of the operating table, a power source installed on the fixed seat, and a connecting rod mechanism. The output end of the power source is connected to a sliding block, and the movable template is connected to the fixed seat through the cooperation of the sliding block and the connecting mechanism.

[0013] Furthermore, the connecting rod mechanism includes a first connecting arm and a second connecting arm which are arranged in pair and hinged to each other, the push-pull plate is connected to the other end of the first connecting arm, and the other end of the second connecting arm is connected to a fixing seat.

[0014] Furthermore, a third connecting arm is hinged between the sliding block and the second connecting arm.

[0015] Furthermore, side ears are provided on both sides of the sliding block, and guide protrusions extending toward one side of the fixed mold are provided in pairs on the fixed seat. A sliding groove is provided on the inner side of the guide protrusion, and the side ears are placed in the sliding groove. After the sliding block is acted upon by the power source, the sliding block moves along the direction in which the guide protrusion is set, and the connecting mechanism pushes or pulls the movable mold plate close to or away from the fixed mold plate.

[0016] Furthermore, a first guide rod is arranged in the slide groove, and a sliding through hole matching with the first guide rod is opened on the side ear.

[0017] Furthermore, the connecting rod mechanism is provided with at least two groups.

[0018] Furthermore, it also includes a plurality of second guide rods, which respectively penetrate the fixed seat, the push-pull plate, the movable template and the fixed template.

[0019] Furthermore, the power source is a cylinder.

[0020] Furthermore, the operating table is also connected to a feeding device arranged on the other side of the moving template.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The injection molding machine optimizes the driving device. By setting a connecting mechanism as the force-applying structure of the moving platen, the single-point force of the power source is evenly dispersed to multiple locations on the back of the moving platen. The overlap performance of the moving platen and the fixed platen during long-term operation is guaranteed, avoiding the formation of gaps between the moving mold and the fixed mold, which could cause material leakage during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the injection molding machine for manufacturing plastic parts of the utility model;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of an embodiment of the injection molding machine for manufacturing plastic parts of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the driving device, the movable platen and the fixed platen in the embodiment of the utility model (state one);

[0026] Figure 4 It is a structural schematic diagram of the driving device, the movable platen and the fixed platen in the embodiment of the utility model (state 2);

[0027] Figure 5 It is a schematic diagram of the exploded structure of the fixed seat and the sliding block in the embodiment of the utility model;

[0028] Figure 6 It is a cross-sectional structural diagram of the combination of the fixed seat and the sliding block in the embodiment of the utility model;

[0029] The reference numerals in the drawings of the specification include:

[0030] Operating table 1, fixed template 2, movable template 3, push-pull plate 30, driving device 4, fixed seat 40, guide protrusion 41, slide groove 410, first guide rod 411, power source 42, connecting rod mechanism 5, first connecting arm 51, second connecting arm 52, third connecting arm 53, sliding block 6, side ear 60, sliding through hole 600, second guide rod 7, feeding device 8, mold 9. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Among them, the drawings are only used for exemplary explanations, and they only show schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts; in the description of the utility model, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like appear, the directions or positional relationships indicated are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, so the terms describing the positional relationship in the drawings are only used for exemplary explanations, and cannot be understood as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] like Figure 1 - Figure 6 As shown, the injection molding machine for making plastic parts of the utility model comprises an operating table 1, a movable mold plate 3, a fixed mold plate 2 and a driving device 4;

[0034] The upper end of the operating table 1 is provided with a movable platen 3, a fixed platen 2, and a driving device 4 for driving the movable platen 3 to approach or move away from the fixed platen 2;

[0035] The movable mold plate 3 and the fixed mold plate 2 have a mounting groove for fixing the mold 9 on one side opposite to the other;

[0036] The other side of the movable template 3 is connected with a push-pull plate 30;

[0037] The driving device 4 includes a fixed seat 40 connected to the upper end of the operating table 1, a power source 42 installed on the fixed seat 40, and a connecting rod mechanism 5. The output end of the power source 42 is connected to a sliding block 6. The movable plate 3 is connected to the fixed seat 40 through the sliding block 6 and the connecting mechanism. The power source 42 can be a motor-driven screw mechanism or a cylinder can be directly used.

[0038] The injection molding machine optimizes the driving device 4. By setting a connecting mechanism as the force-applying structure of the movable mold plate 3, the single-point force of the power source 42 is evenly dispersed to multiple locations on the back side of the movable mold plate 3. The overlap performance of the movable mold plate 3 and the fixed mold plate 2 during long-term operation is guaranteed, avoiding the formation of a gap between the movable mold and the fixed mold, which would cause material leakage during the injection molding process.

[0039] Specifically, the connecting rod mechanism 5 includes a first connecting arm 51 and a second connecting arm 52 which are arranged in pair and hinged to each other. The push-pull plate 30 is connected to the other end of the first connecting arm 51 , and the other end of the second connecting arm 52 is connected to the fixing seat 40 .

[0040] A third connecting arm 53 is hinged between the sliding block 6 and the second connecting arm 52 .

[0041] The first connecting arm 51, the second connecting arm 52, the third connecting arm 53 and the sliding block 6 form a cross scissor shape during the injection molding process, so that the movable mold plate 3 and the fixed mold plate 2 move relative to each other more smoothly. Due to the addition of the push-pull plate 30, the force can be further dispersed to the movable mold plate 3, the mold 9 is more tightly closed, and the quality of the injection molded product can be guaranteed.

[0042] In addition, side ears 60 are provided on both sides of the sliding block 6, and guide protrusions 41 extending toward one side of the fixed mold are provided in pairs on the fixed seat 40, and a slide groove 410 is provided inside the guide protrusion 41, and the side ears 60 are placed in the slide groove 410. After the sliding block 6 is acted upon by the power source 42, the sliding block 6 moves along the direction in which the guide protrusion 41 is provided, and the connecting mechanism pushes or pulls the movable mold plate 3 to approach or move away from the fixed mold plate 2. Such a setting increases the stability of the sliding block 6 during movement.

[0043] A first guide rod 411 is disposed in the slide groove 410 , and a sliding through hole 600 matching with the first guide rod 411 is formed on the side ear 60 .

[0044] The connecting rod mechanism 5 can be provided in multiple groups, preferably, in two or three groups.

[0045] In addition, it also includes a plurality of second guide rods 7 , which respectively penetrate the fixed seat 40 , the push-pull plate 30 , the movable template 3 and the fixed template 2 .

[0046] The operating table 1 is also connected to a feeding device 8 arranged on the other side of the moving template 3 .

[0047] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An injection molding machine for making plastic parts, characterized in that: include: An operating table, the upper end of which is provided with a movable platen, a fixed platen and a driving device for driving the movable platen to approach or move away from the fixed platen; The movable mold plate and the fixed mold plate have mounting grooves for fixing the mold on opposite sides thereof; The other side of the movable template is connected with a push-pull plate; The driving device includes a fixed seat connected to the upper end of the operating table, a power source installed on the fixed seat, and a connecting rod mechanism. The output end of the power source is connected to a sliding block, and the movable template is connected to the fixed seat through the cooperation of the sliding block and the connecting mechanism.

2. The injection molding machine for plastic parts production according to claim 1, characterized in that: The connecting rod mechanism comprises a first connecting arm and a second connecting arm which are arranged in pairs and hinged to each other, the push-pull plate is connected to the other end of the first connecting arm, and the other end of the second connecting arm is connected to a fixing seat.

3. The injection molding machine for plastic parts production according to claim 2, characterized in that: A third connecting arm is hinged between the sliding block and the second connecting arm.

4. The injection molding machine for plastic parts production according to claim 1, 2 or 3, characterized in that: Side ears are arranged on both sides of the sliding block, and guide protrusions extending toward one side of the fixed mold are arranged in pairs on the fixed seat. A slide groove is opened on the inner side of the guide protrusion, and the side ears are placed in the slide groove. After the sliding block is acted upon by the power source, the sliding block moves along the direction in which the guide protrusion is set, and the connecting mechanism pushes or pulls the movable mold plate to approach or move away from the fixed mold plate.

5. The injection molding machine for producing plastic parts according to claim 4, characterized in that: A first guide rod is arranged in the slide groove, and a sliding through hole matched with the first guide rod is opened on the side ear.

6. The injection molding machine for producing plastic parts according to claim 4, characterized in that: The connecting rod mechanism is provided with at least two groups.

7. The injection molding machine for plastic parts production according to claim 1, 2, 3, 5 or 6, characterized in that: It also includes a plurality of second guide rods, which respectively penetrate the fixed seat, the push-pull plate, the movable template and the fixed template.

8. The injection molding machine for producing plastic parts according to claim 1, characterized in that: The power source is a cylinder.

9. The injection molding machine for plastic parts production according to claim 1, characterized in that: The operating table is also connected with a feeding device arranged on the other side of the moving template.

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