Valve plate assembling and fixing structure of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machine part installation, and discloses an injection molding machine valve plate assembling and fixing structure which comprises a workbench, a fixing plate capable of placing a valve plate is erected on the workbench, and a fixing structure for limiting relative movement of the fixing plate and the valve plate is arranged between the fixing plate and the valve plate. The fixing plate is provided with a rotating structure which can enable the fixing plate to rotate horizontally after the fixing plate is erected on the workbench, and a limiting structure which limits relative rotation between the fixing plate and the workbench after the valve plate rotates to a target position along with the fixing plate is arranged between the fixing plate and the workbench. According to the valve plate assembling and fixing structure of the injection molding machine, the valve plate is fixed to the fixing plate, rotation of the fixing plate on the workbench is limited, and when a part is installed on the valve plate and tightened, the valve plate cannot rotate along with tightening of the part, so that an operator can independently complete part installation, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine parts installation, in particular to an injection molding machine valve plate assembly fixing structure. Background Art

[0002] The valve plate is a common part of the injection molding machine. The Chinese patent application number 201220280534.0 discloses a mold clamping valve plate of an injection molding machine, which includes a basic part and an external standard part, wherein the basic part is the mold clamping valve plate body, and the external standard part is fixed on the mold clamping valve plate body through a standard connecting pipe hole to form the mold clamping valve plate; the external standard parts include a cartridge valve, a cartridge valve cover, an electromagnetic reversing valve, an electro-hydraulic reversing valve, a check valve, a sliding valve, a hydraulic protection transition plate, a pad, a stroke valve plate, a hose connector, a straight pipe connector, a stroke valve, and a screw plug.

[0003] The existing valve plate assembly method is to first lift the valve plate to the workbench, and then assemble the parts on the valve plate on the workbench. However, in the process of assembling the parts on the valve plate, some large joints and plugs will cause the valve plate to shake or deviate when tightened due to the large torque, making the installation difficult. One person needs to hold the valve plate while the other person tightens it with a pneumatic gun, which is inconvenient to operate. Utility Model Content

[0004] The utility model aims at the disadvantage of inconvenient operation of installing parts on a valve plate in the prior art and provides an injection molding machine valve plate assembly fixing structure.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A valve plate assembly fixing structure for an injection molding machine comprises a workbench, a fixing plate on which a valve plate can be placed is mounted on the workbench, a fixing structure for limiting the relative movement of the fixing plate and the valve plate is arranged between the fixing plate and the valve plate, a rotating structure for enabling the fixing plate to rotate horizontally when the fixing plate is mounted on the workbench, and a limiting structure for limiting the relative rotation between the fixing plate and the workbench when the valve plate rotates to a target position along with the fixing plate is arranged between the fixing plate and the workbench.

[0007] By adopting the above scheme, the valve plate is first fixed on the fixed plate by a fixing structure, and then the fixed plate is mounted on the workbench. The fixed plate can be horizontally rotated on the workbench by the rotating structure, and the valve plate and the fixed plate rotate synchronously until the valve plate rotates to the target position (the target position is a position for the operator to install the parts on the valve plate). Finally, the rotation of the fixed plate relative to the workbench is limited by the limiting structure. At this time, when the parts are installed on the valve plate and tightened, the valve plate will not rotate as the parts are tightened, so that the operator can complete the parts installation alone, and the operation is more convenient.

[0008] Preferably, the fixing structure includes a threaded hole provided on the valve plate, a through hole provided on the fixing plate, and a screw that passes through the through hole and is thread-tightly matched with the threaded hole.

[0009] With the above solution, the screws pass through the through holes and are tightly matched with the threaded holes to achieve fixation between the valve plate and the fixing plate. When disassembling, the screws can be reversely rotated away from the valve plate and the fixing plate.

[0010] Preferably, the limiting structure includes at least one first latch hole spaced apart on the fixing plate, a plurality of second latch holes spaced apart on the workbench, and a limiting pin passing through the first latch hole and the second latch hole in sequence.

[0011] By adopting the above scheme, after the fixed plate rotates until the valve plate is at the target position, the first latch hole and the second latch hole are opposite, and the limit pin passes through the first latch hole and the second latch hole in sequence to limit the rotation of the fixed plate relative to the workbench.

[0012] Preferably, the rotating structure is a toothless slewing bearing installed on the side of the fixed plate close to the workbench. When the fixed plate is mounted on the workbench, the side of the toothless slewing bearing away from the fixed plate abuts against the workbench, and the fixed plate can drive the valve plate to rotate horizontally on the workbench.

[0013] With the above solution, when the fixed plate is placed on the workbench, the side of the toothless slewing bearing away from the fixed plate abuts against the end surface of the workbench, so that the fixed plate and the valve plate can rotate horizontally on the workbench.

[0014] Preferably, a protective structure for preventing the fixing plate from tipping over is provided on one side of the fixing plate close to the workbench.

[0015] With the above solution, since the contact surface between the fixed plate and the workbench is only a toothless slewing bearing, applying external force when installing parts on the edge of the valve plate may cause the fixed plate to tip over, so a protective structure is provided to reduce or avoid the possibility of tipping over.

[0016] Preferably, the protective structure includes at least three supporting feet evenly spaced around the toothless slewing bearing on the fixed plate. When the side of the toothless slewing bearing away from the fixed plate abuts against the workbench, a gap exists between the end of the supporting foot away from the fixed plate and the workbench.

[0017] With the above solution, under normal conditions, the support legs do not contact the workbench and do not affect the rotation of the fixed plate. When the fixed plate is tilted by force on one side, the support legs abut against the workbench, reducing the possibility of the fixed plate tipping over.

[0018] Preferably, a bracket is provided on one side of the workbench to facilitate the installation of the valve plate on the fixed plate, and a slot is recessed on the bracket for inserting the supporting foot.

[0019] When adopting the above scheme, when installing the valve plate on the fixed plate, it is necessary to tighten the screws. The gap between the fixed plate and the workbench is small, which is not conducive to installing the screws. Therefore, a bracket is added. When installing the valve plate, first place the fixed plate on the bracket, insert the supporting feet into the slots to limit the rotation of the fixed plate relative to the bracket, place the valve plate on the fixed plate, align the threaded holes and the through holes, insert the screws and tighten them to fix the valve plate and the fixed plate.

[0020] Preferably, a guide structure is provided on the bracket to facilitate the synchronous insertion of all supporting legs into the corresponding slots, and the guide structure includes at least one guide piece that is circumferentially spaced around the slot and gradually tilted outward.

[0021] By adopting the above scheme, in order to limit the relative rotation between the fixing plate and the bracket, the size of the slot is generally adapted to or slightly larger than the supporting foot, which makes it more difficult to align and insert the supporting foot. A guide piece is provided, and as long as the supporting foot contacts the guide piece, it can be inserted into the slot under the guidance of the guide piece.

[0022] The utility model adopts the above technical scheme and has significant technical effects: the valve plate is fixed on the fixing plate, and the mounting surface of the valve plate is adjusted by rotating the fixing plate. After adjusting to a suitable position, the fixing plate is limited to restrict its rotation. At this time, when the parts are installed on the valve plate and tightened, the valve plate will not rotate as the parts are tightened, so that the operator can complete the parts installation alone, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a disassembled diagram of an injection molding machine valve plate assembly fixing structure in an embodiment;

[0024] Figure 2 yes Figure 1 A in the enlarged view;

[0025] Figure 3 yes Figure 1 The enlarged view of point B in the figure;

[0026] Figure 4 This is a disassembled diagram of an injection molding machine valve plate assembly fixing structure in an embodiment;

[0027] Figure 5 yes Figure 4 The enlarged view of point C in the figure;

[0028] Figure 6 It is a schematic diagram of the assembly of a valve plate, a fixing plate and a workbench in a valve plate assembly fixing structure of an injection molding machine in an embodiment;

[0029] Figure 7 yes Figure 6 The enlarged view of point D in the figure;

[0030] Figure 8 It is a schematic diagram of a fixing plate in an injection molding machine valve plate assembly fixing structure in an embodiment being plugged into a bracket.

[0031] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. valve plate; 2. workbench; 3. fixing plate; 4. threaded hole; 5. through hole; 6. screw; 7. first latch hole; 8. second latch hole; 9. limit pin; 10. toothless slewing bearing; 11. supporting foot; 12. bracket; 13. slot; 14. guide plate. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] Example

[0034] An injection molding machine valve plate assembly fixing structure, referring to Figures 1 to 8 , including a fixing plate 3 for placing the valve plate 1, and a fixing structure for limiting the relative movement between the fixing plate 3 and the valve plate 1 is arranged between the fixing plate 3 and the valve plate 1.

[0035] The fixing structure includes a plurality of through holes 5 provided on the fixing plate 3, and a threaded hole 4 is provided on the valve plate 1. After the valve plate 1 is placed on the fixing plate 3 and the threaded hole 4 is aligned with any through hole 5, the screw 6 passes through the through hole 5 and is threadedly matched with the threaded hole 4 to achieve the fixed installation between the valve plate 1 and the fixing plate 3; when disassembling, the screw 6 is rotated in the opposite direction to unscrew the valve plate 1 and the fixing plate 3. The threaded hole 4 on the valve plate 1 can also be provided with multiple threads, so that the fixation between the valve plate 1 and the fixing plate 3 is more stable. In this embodiment, the screw 6 is a hexagonal screw.

[0036] A toothless slewing bearing 10 is provided on the side of the fixed plate 3 close to the workbench 2. When the fixed plate 3 is mounted on the workbench 2, the side of the toothless slewing bearing 10 away from the fixed plate 3 abuts against the workbench 2, and the fixed plate 3 can drive the valve plate 1 to rotate horizontally on the workbench 2.

[0037] A limiting structure is provided between the fixed plate 3 and the workbench 2, and the valve plate 1 and the fixed plate 3 can be synchronously rotated horizontally on the workbench 2. When the valve plate 1 rotates to the target position, the limiting structure limits the relative rotation between the fixed plate 3 and the workbench 2.

[0038] The limiting structure includes a first latch hole 7 arranged on the fixed plate 3, at least one first latch hole 7 is arranged on the fixed plate 3, a second latch hole 8 is arranged on the workbench 2, a plurality of first latch holes 7 are arranged on the fixed plate 3, and also includes a limiting pin 9. After the fixed plate 3 is rotated to the target position of the valve plate 1, the first latch hole 7 and the second latch hole 8 are opposite to each other, and the limiting pin 9 passes through the first latch hole 7 and the second latch hole 8 in sequence to limit the rotation of the fixed plate 3 relative to the workbench 2.

[0039] In this embodiment, the fixing plate 3 is arranged in a square shape, four first latch holes 7 are arranged and located at the four corners of the fixing plate 3, and four second latch holes 8 are arranged on the workbench 2. After the fixing plate 3 is placed on the workbench 2, the four second latch holes 8 are respectively opposite to the four first latch holes 7. And every time the fixing plate 3 rotates 90°, it can be ensured that the four second latch holes 8 are respectively opposite to the four first latch holes 7, so that the valve plate 1 can be adjusted in four directions for the installation of parts.

[0040] Since the contact surface between the fixed plate 3 and the workbench 2 is only the toothless slewing bearing 10, applying external force when installing parts on the edge of the valve plate 1 may cause the fixed plate 3 to tip over. Therefore, a protective structure is provided on the side of the fixed plate 3 close to the workbench 2 to prevent the fixed plate 3 from tipping over.

[0041] The protection structure includes at least three support legs 11 evenly spaced around the toothless slewing bearing 10 on the fixed plate 3. When the toothless slewing bearing 10 abuts against the workbench 2 on the side away from the fixed plate 3, there is a gap between the end of the support leg 11 away from the fixed plate 3 and the workbench 2. Under normal conditions, the support leg 11 does not contact the workbench 2 and does not affect the rotation of the fixed plate 3. When the fixed plate 3 is tilted by force on one side, the support leg 11 abuts against the workbench 2 to reduce or avoid the possibility of rollover. In this embodiment, four support legs 11 are provided and located at the four corners of the fixed plate 3.

[0042] When the valve plate 1 is mounted on the fixing plate 3, the screws 6 need to be tightened. The gap between the fixing plate 3 and the workbench 2 is small, which is not conducive to installing the screws 6. Therefore, a bracket 12 is added on one side of the workbench 2. The bracket 12 is provided with a recessed slot 13 for inserting the support legs 11. In this embodiment, four recessed slots 13 need to be provided on the bracket 12 and four support legs 11 can be inserted respectively.

[0043] When installing the valve plate 1, first place the fixing plate 3 on the bracket 12, insert the support foot 11 into the slot 13 to limit the rotation of the fixing plate 3 relative to the bracket 12, place the valve plate 1 on the fixing plate 3, align the threaded hole 4 with the through hole 5, and then tighten to fix the valve plate 1 and the fixing plate 3. The fixing plate 3 is placed on the bracket 12 so that the fixing plate 3 is suspended above the ground, and the space below the fixing plate 3 is increased, which is convenient for tightening the screws 6.

[0044] In order to limit the relative rotation between the fixing plate 3 and the bracket 12, the size of the slot 13 is generally adapted to or slightly larger than the supporting foot 11, which makes it difficult to align and insert the supporting foot 11. Therefore, a guide structure is provided on the bracket 12 to facilitate the synchronous insertion of all the supporting feet 11 into the corresponding slots 13. The guide structure includes at least one guide piece 14 that is arranged at intervals around the slot 13 and gradually tilted outward. As long as the supporting foot 11 contacts the guide piece 14, it can be inserted into the slot 13 under the guidance of the guide piece 14.

[0045] The fixing plate 3 is mounted on the bracket 12, the support foot 11 is inserted into the slot 13 along the guide sheet 14, the valve plate 1 is placed on the fixing plate 3 so that the threaded hole 4 and the through hole 5 are aligned, and the screw 6 passes through the through hole 5 and is threadedly engaged with the threaded hole 4 to fix the valve plate 1 on the fixing plate 3. The fixing plate 3 with the valve plate 1 fixed is transferred to the workbench 2, the toothless slewing bearing 10 is in contact with the workbench 2 and there is a gap between the support foot 11 and the workbench 2, the fixing plate 3 is rotated, and the valve plate 1 is adjusted to the target position so that the first latch hole 7 and the second latch hole 8 are aligned, and the limit pin 9 passes through the first latch hole 7 and the second latch hole 8 in sequence to limit the rotation of the fixing plate 3, and then the parts can be installed on the valve plate 1.

[0046] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A valve plate assembly fixing structure for an injection molding machine, comprising a workbench (2), characterized in that: A fixed plate (3) on which a valve plate (1) can be placed is mounted on the workbench (2); a fixed structure for limiting relative movement between the fixed plate (3) and the valve plate (1) is arranged between the fixed plate (3) and the valve plate (1); a rotating structure for enabling the fixed plate (3) to rotate horizontally when the fixed plate (3) is mounted on the workbench (2); and a limiting structure for limiting relative rotation between the fixed plate (3) and the workbench (2) when the valve plate (1) rotates to a target position along with the fixed plate (3) is arranged between the fixed plate (3) and the workbench (2).

2. The valve plate assembly and fixing structure for an injection molding machine according to claim 1, characterized in that: The fixing structure comprises a threaded hole (4) provided on the valve plate (1), a through hole (5) provided on the fixing plate (3), and a screw (6) which passes through the through hole (5) and is thread-tightly matched with the threaded hole (4).

3. The valve plate assembly and fixing structure for an injection molding machine according to claim 1, characterized in that: The limiting structure comprises at least one first latch hole (7) arranged at intervals on the fixing plate (3), a plurality of second latch holes (8) arranged at intervals on the workbench (2), and a limiting pin (9) passing through the first latch hole (7) and the second latch hole (8) in sequence.

4. The valve plate assembly and fixing structure for an injection molding machine according to claim 1, characterized in that: The rotating structure is a toothless slewing bearing (10) installed on a side of the fixed plate (3) close to the workbench (2). When the fixed plate (3) is mounted on the workbench (2), the side of the toothless slewing bearing (10) away from the fixed plate (3) abuts against the workbench (2), and the fixed plate (3) can drive the valve plate (1) to rotate horizontally on the workbench (2).

5. The valve plate assembly and fixing structure for an injection molding machine according to claim 4, characterized in that: A protective structure for preventing the fixing plate (3) from tipping over is arranged on one side of the fixing plate (3) close to the workbench (2).

6. The valve plate assembly and fixing structure for an injection molding machine according to claim 5, characterized in that: The protective structure comprises at least three supporting feet (11) which are evenly spaced and arranged around a toothless slewing bearing (10) on a fixed plate (3); when the side of the toothless slewing bearing (10) away from the fixed plate (3) abuts against a workbench (2), a gap exists between the end of the supporting foot (11) away from the fixed plate (3) and the workbench (2).

7. The valve plate assembly and fixing structure for an injection molding machine according to claim 6, characterized in that: A bracket (12) is provided on one side of the workbench (2) for facilitating the installation of the valve plate (1) on the fixing plate (3), and a slot (13) is recessed on the bracket (12) for the support leg (11) to be inserted into.

8. The valve plate assembly and fixing structure for an injection molding machine according to claim 7, characterized in that: A guide structure is provided on the bracket (12) to facilitate the synchronous insertion of all the support legs (11) into the corresponding slots (13), and the guide structure comprises at least one guide piece (14) which is arranged at intervals in the circumferential direction around the slot (13) and is gradually inclined outward.

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