Injection molding machine with injection table capable of translating and switching injection

Abstract

The utility model relates to the field of manufacturing of injection molding machines, and discloses an injection molding machine with injection tables capable of translating and switching injection, which comprises a fixed mold and an injection assembly, and the injection assembly comprises at least two injection tables arranged in parallel and a movable supporting seat used for bearing all the injection tables and enabling the injection tables to move on the movable supporting seat along the direction vertical to the injection direction in a guiding manner; the movable supporting seat slides on the first guide rail in a guiding mode, and an assembling structure used for positioning the installation position of the first guide rail to ensure that a machine barrel of the injection table and a section mold injection molding opening in the fixed mold are in an axial parallel state is arranged between the fixed mold and the movable supporting seat and comprises a connecting frame. One end of the connecting frame is fixedly connected with the fixed mold, and a guide matching structure enabling the movable supporting seat to slide in a guiding mode in the horizontal direction perpendicular to the axial direction of the section mold injection molding opening is arranged between the other end of the connecting frame and the movable supporting seat. The injection molding machine can improve the assembling speed of the injection assembly and reduce the assembling error of the injection assembly.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine manufacturing, and in particular to an injection molding machine with injection stage translation and switching. Background Technology

[0002] Chinese Patent No. CN213830024U discloses a multi-injection stage interchangeable structure for an injection molding machine, comprising: a slide rail fixed to the upper part of the machine body perpendicular to the direction of the injection stage; a slide plate that can slide along the slide rail and is used to support multiple injection stages; a positioning component for aligning any injection stage with the mold; the slide rail is provided with a plurality of positioning blocks, and the slide plate is provided with a plurality of positioning parts; when the slide plate is slid until the positioning part abuts against the positioning block, the injection stage moves accordingly to be aligned with the mold.

[0003] The mold is fixedly mounted on the stationary mold, and the slide moves on the machine body guided by the guide rail. There is a large gap between the stationary mold and the injection station, and they are each installed in different mounting positions. There is a lack of a reference structure to reduce the horizontal installation error between the two. That is, it cannot be ensured that the barrel is parallel to the axial direction of the injection port of the mold after the guide rail is installed. Therefore, the existing design will significantly increase the difficulty of subsequent guide rail installation position calibration. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies where the lack of a reference structure between the mold and the injection station makes it difficult to position the slide rail. It provides an injection molding machine that allows for quick positioning of the guide rail installation position and enables translational switching of the injection station.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] An injection molding machine with a translational switching injection stage includes a fixed mold and an injection assembly. The injection assembly includes at least two parallel injection stages and a movable support for supporting all injection stages and guiding the injection stages to move along a direction perpendicular to the injection direction. The movable support is guided and slidably mounted on a first guide rail. An assembly structure is provided between the fixed mold and the movable support for positioning the first guide rail to ensure that the barrel of the injection stage and the injection port of the mold on the fixed mold are axially parallel. The assembly structure includes a connecting frame, one end of which is fixedly connected to the fixed mold, and the other end of which is provided with a guide engagement structure between it and the movable support for guiding the movable support to slide along a horizontal direction perpendicular to the axial direction of the injection port.

[0007] By adopting the above solution, an assembly structure is added to guide the movement of the movable support base, thereby positioning the first slider below the movable support base, which in turn positions the first guide rail that cooperates with the first slider. When the first guide rail is installed according to the reference provided by the assembly structure, it can be ensured that the movable support base can slide stably and the barrel of the injection station mounted above it is always parallel to the axial direction of the injection port of the mold. This injection molding machine can improve the assembly speed of the injection components and reduce the assembly error of the injection components.

[0008] Preferably, the guiding and mating structure includes a second guide rail fixed to the side of the movable support near the fixed mold and a second slider fixed to the connecting frame and embedded in the second guide rail for guiding and sliding.

[0009] Preferably, an adjustment assembly structure is provided between the connecting frame and the fixed mold to eliminate longitudinal assembly errors between the two. The adjustment assembly structure includes at least two vertical waist-shaped grooves that are parallel and spaced apart at one end of the connecting frame near the fixed mold, at least two threaded grooves that can be aligned one-to-one with the vertical waist-shaped grooves on the fixed mold, and a locking bolt that passes through the vertical waist-shaped grooves and is tightly fitted with the threaded grooves.

[0010] By adopting the above solution, the vertical waist-shaped groove can eliminate vertical errors, ensure the compatibility of the guiding fit structure between the connecting frame and the movable support, and at the same time satisfy the requirement that the locking bolt can pass through the vertical waist-shaped groove and be assembled with the threaded groove.

[0011] Preferably, the fixed mold is provided with an assembly plane for the end face of the connecting frame to fit, and threaded grooves are distributed on the assembly plane.

[0012] By adopting the above solution, the assembly plane can increase the contact area between the fixed mold and the connecting frame, which facilitates positioning and installation, and also increases the stability of the assembly.

[0013] Preferably, a positioning mechanism is provided between the fixed mold and the connecting frame to facilitate pre-positioning of the two. The positioning mechanism includes a through hole parallel to the end of the connecting frame near the fixed mold, a positioning groove on the fixed mold that aligns with the through hole, and a positioning pin that passes through the through hole and engages with the positioning groove.

[0014] By adopting the above solution, the pre-positioning of the locating pin makes subsequent bolt assembly easier and allows for quick alignment and installation.

[0015] Preferably, the end of the connecting frame near the movable support has a vertically protruding backing that allows the bottom of the second slider to rest against.

[0016] Using the above solution, the slider can be supported by the backrest, achieving a close fit with the connecting frame, which facilitates alignment during subsequent bolt connection and is more labor-saving.

[0017] Preferably, a drive mechanism for driving the movable support is provided between the connecting frame and the movable support. The drive mechanism includes a lead screw rotatably disposed at the bottom of the connecting frame, a drive motor fixed to one end of the connecting frame for driving the lead screw to rotate, and a mating protrusion fixedly protruding on the movable support and equipped with a nut that mates with the lead screw.

[0018] Using the above scheme, the drive mechanism can automatically guide the movable support base to slide along the first guide rail. In the drive mechanism, the lead screw and drive motor are mounted on the connecting frame. While driving the movable support base, it does not need to move with the movable support base. The wiring is convenient and does not increase the size of the whole machine.

[0019] This utility model, by adopting the above technical solution, has significant technical effects: by adding an assembly structure, it provides pre-guidance for the movement of the movable support seat, thereby positioning the first slider below the movable support seat, which in turn positions the first guide rail that mates with the first slider. Once the first guide rail is installed according to the reference provided by the assembly structure, it ensures that the movable support seat can slide stably and that the barrel of the injection unit mounted above it is always parallel to the axial direction of the injection mold opening. This injection molding machine can increase the assembly speed of the injection components and reduce assembly errors. Attached Figure Description

[0020] Figure 1 This is an isometric view of the fixed mold, connecting frame, and movable support base assembled in this embodiment;

[0021] Figure 2 This is a top view of the assembled fixed mold, connecting frame, and movable support base in this embodiment;

[0022] Figure 3 This is a rear view of the fixed mold, connecting frame, and movable support base assembled in this embodiment;

[0023] Figure 4 This is a top view of an injection molding machine with a translational injection stage in this embodiment.

[0024] The parts referred to by the numbers in the above attached figures are as follows: 1. Fixed mold; 101. Assembly plane; 2. Moving support base; 3. Third guide rail; 4. Third slider; 5. First slider; 6. First guide rail; 7. Connecting frame; 8. Drive motor; 9. Lead screw; 10. Mating protrusion; 11. Nut; 12. Feedback mechanism; 13. Through hole; 14. Vertical waist-shaped groove; 15. Positioning pin; 16. Locking bolt; 17. Second guide rail; 18. Second slider; 19. Backing; 20. Machine body; 21. Injection table. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] An injection molding machine with a translational injection stage, as described above. Figure 4 As shown, the device includes a machine body 20 and a fixed mold 1 fixedly installed on the upper part of the machine body 20. An injection assembly is also provided on the upper part of the machine body 20. The injection assembly includes two parallel injection stations 21 and a movable support base 2 for supporting the two injection stations 21. Figures 1-3 As shown, the movable support base 2 is provided with two sets of guide structures that cooperate with the two injection stations 21 individually to realize the movement and injection of the injection station 21. The guide structure includes a third guide rail 3 fixed on the movable support base 2 and extending along the injection direction of the injection station 21. Each set of guide structures has two parallel third guide rails 3. A third slider 4 is fixedly provided at the bottom of the injection station 21 and is embedded and cooperates with the third guide rail 3. The position of the injection station 21 is controlled by the existing drive components along the direction of the fixed mold 1. This application has not made any improvements and will not be described in detail.

[0027] The movable support 2 is guided and slidably moved on the first guide rail 6 fixed at the upper end of the machine body 20. An assembly structure is provided between the fixed mold 1 and the movable support 2 to position the first guide rail 6 on the machine body 20 to ensure that the barrel of the injection station 21 and the injection port of the fixed mold 1 are in an axially parallel state. The assembly structure includes a connecting frame 7. One end of the connecting frame 7 is fixedly connected to the fixed mold 1 and the other end is provided with a guide engagement structure between it and the movable support 2 to guide the movable support 2 to slide in a horizontal direction perpendicular to the axial direction of the injection port of the mold.

[0028] The fixed mold 1 and the connecting frame 7 are fixedly connected by an adjustable assembly structure. The adjustable assembly structure includes two vertical waist-shaped grooves 14 that are parallel and spaced apart at one end of the connecting frame 7 near the fixed mold 1, an assembly plane 101 on the fixed mold 1 that allows the end face of the connecting frame 7 to be fitted with the vertical waist-shaped grooves 14 to be engaged, and a threaded groove on the assembly plane 101 that can be aligned with the vertical waist-shaped grooves 14. The locking bolt 16 passes through the vertical waist-shaped grooves 14 and is tightly fitted with the threaded groove.

[0029] To make assembly easier, a positioning mechanism is provided between the fixed mold 1 and the connecting frame 7. The positioning mechanism includes two through holes 13 arranged parallel to each other on the opposite side of the two vertical waist-shaped grooves 14 at the end of the connecting frame 7 near the fixed mold 1, a positioning groove provided on the fixed mold 1 that is aligned with the through holes 13, and a positioning pin 15 that passes through the through holes 13 and is inserted into the positioning groove.

[0030] The guiding and mating structure includes a second guide rail 17 fixed to the side of the movable support 2 near the fixed mold 1, and a second slider 18 fixed to the connecting frame 7 and embedded in the second guide rail 17 for guiding and sliding. In order to make the installation of the second slider 18 and the connecting frame 7 easier, a support 19 is vertically protruding at one end of the connecting frame 7 near the movable support 2, which can be used for the bottom of the second slider 18 to abut. The second slider 18 and the connecting frame 7 are tightly fitted by bolts.

[0031] A drive mechanism for driving the movable support 2 is provided between the connecting frame 7 and the movable support 2. The drive mechanism includes a lead screw 9, a drive motor 8, and a nut 11 that cooperates with the lead screw 9. A protrusion is provided at the lower end of the connecting frame 7. One end of the lead screw 9 is rotatably connected to the protrusion through a bearing. The drive motor 8 is fixed to one side of the protrusion and is electrically connected to the lead screw 9. A mating protrusion 10 is provided at the end of the movable support 2 near the connecting frame 7, through which the lead screw 9 can pass. The bearing is fixedly installed on the mating protrusion 10. In this embodiment, the drive motor 8 is a geared motor. A feedback mechanism 12 is installed at the end of the lead screw 9 away from the drive motor 8. The feedback mechanism 12 is an encoder. The drive motor 8 can also be a servo motor. When it is a servo motor, there is no need to set an encoder at the tail end of the lead screw 9.

[0032] This solution adds an assembly structure, which can serve as an installation benchmark for the accurate assembly of the movable support base 2 on the machine body 20. By positioning the first slider 5 below the movable support base 2, the installation position of the first guide rail 6 that cooperates with the first slider 5 on the machine base is then positioned.

[0033] During installation, first fix the connecting frame 7 to the fixed mold 1, then fix the second slider 18, which is guided and cooperates with the second guide rail 17, to the connecting frame 7. After installation, the placement position of the first guide rail 6, which is guided and cooperates with the first slider 5, on the machine body 20 is the current accurate installation position of the first guide rail 6 and the machine body 20. Finally, fix the first guide rail 6 to the machine body 20 to complete the accurate guiding installation of the movable support 2 on the machine body 20.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An injection molding machine with a shifting injection stage, comprising a fixed mold (1) and an injection assembly, the injection assembly comprising at least two parallel injection stages (21) and a movable support (2) for supporting all injection stages (21) and enabling the injection stages (21) to move in a direction perpendicular to the injection direction, the movable support (2) being guided and slidably mounted on a first guide rail (6), characterized in that: An assembly structure is provided between the fixed mold (1) and the movable support (2) to position the first guide rail (6) to ensure that the barrel of the injection station (21) and the mold injection port on the fixed mold (1) are in an axially parallel state. The assembly structure includes a connecting frame (7). One end of the connecting frame (7) is fixedly connected to the fixed mold (1), and the other end is provided with a guide fitting structure between it and the movable support (2) to guide the movable support (2) to slide in a horizontal direction perpendicular to the axial direction of the mold injection port.

2. The injection molding machine with injection stage translation switching according to claim 1, characterized in that: The guiding and fitting structure includes a second guide rail (17) fixed to the side of the movable support base (2) near the fixed mold (1) and a second slider (18) fixed to the connecting frame (7) and embedded with the second guide rail (17) for guiding and sliding.

3. The injection molding machine with stage translation and switching injection according to claim 2, characterized in that: An adjustment assembly structure is provided between the connecting frame (7) and the fixed mold (1) to eliminate longitudinal assembly errors between the two. The adjustment assembly structure includes at least two vertical waist-shaped grooves (14) arranged parallel to each other at one end of the connecting frame (7) near the fixed mold (1), at least two threaded grooves arranged on the fixed mold (1) that can be aligned one-to-one with the vertical waist-shaped grooves (14), and a locking bolt (16) that passes through the vertical waist-shaped grooves (14) and is tightly fitted with the threaded grooves.

4. The injection molding machine with stage translation and switching injection according to claim 3, characterized in that: The fixed mold (1) is provided with an assembly plane (101) for the end face of the connecting frame (7) to fit, and threaded grooves are distributed on the assembly plane (101).

5. An injection molding machine with injection stage translation switching according to any one of claims 2-4, characterized in that: A positioning mechanism is provided between the fixed mold (1) and the connecting frame (7) to facilitate the pre-positioning of the two. The positioning mechanism includes a through hole (13) parallel to one end of the connecting frame (7) near the fixed mold (1), a positioning groove on the fixed mold (1) that aligns with the through hole (13), and a positioning pin (15) that passes through the through hole (13) and engages with the positioning groove.

6. The injection molding machine with injection stage translation switching according to claim 2, characterized in that: The connecting frame (7) has a vertical protrusion at one end near the movable support base (2) for the bottom of the second slider (18) to rest against.

7. The injection molding machine with stage translation and switching injection according to claim 1, characterized in that: A drive mechanism for driving the movable support (2) is provided between the connecting frame (7) and the movable support (2). The drive mechanism includes a lead screw (9) rotatably disposed at the bottom of the connecting frame (7), a drive motor (8) fixed to one end of the connecting frame (7) and used to drive the lead screw (9) to rotate, and a mating protrusion (10) fixedly protruding on the movable support (2) and equipped with a nut (11) that mates with the lead screw (9).

Images