A low-pressure injection molding device

Abstract

This utility model discloses a low-pressure injection molding device, comprising: a cabinet, with feet fixedly installed at the bottom of the cabinet; a support plate and a worktable fixedly installed on the top of the cabinet; a top plate fixedly installed on the top of the support plate; a mold clamping device on the worktable; a mold pressing device above the mold clamping device; a top hydraulic device below the top plate; and an injection device fixedly installed below the top hydraulic device. Lifting and stabilizing devices are provided on the outside of the hydraulic device and the injection device. This utility model uses a hydraulic device in conjunction with clamping plates and pressing plates to fix the mold, enabling the processing of molds of various specifications. The fixing operation is simple, the device operates stably, and the work efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a low-pressure injection molding device. Background Technology

[0002] Injection molding machines, as core equipment in the plastics processing field, occupy an indispensable and crucial position in the production process of plastic products. In terms of equipment type, traditional injection molding machines are mainly divided into two categories: horizontal and vertical. Among them, vertical injection molding machines, with their unique structural characteristics, demonstrate irreplaceable advantages in specific application scenarios. Although the technology of vertical injection molding machines continues to iterate and upgrade, problems still exist in practical applications, such as varying fixation effects for different molds and low processing efficiency.

[0003] A search revealed Chinese Patent Publication No. CN223186857U, which discloses a vertical low-pressure injection molding machine, including a frame, a pressure plate, a nozzle floating plate, and an injection cylinder. A positioning seat is provided on the worktable of the frame, and an injection mold is positioned and installed on the positioning seat. The pressure plate is liftable and installed above the positioning seat to press the injection mold during injection. The nozzle floating plate is liftable and installed above the pressure plate, and a drive component is installed on the nozzle floating plate. The injection cylinder is installed on the nozzle floating plate, and an injection nozzle is provided at the lower end of the injection cylinder, passing through the pressure plate and positioned below it. A pusher cylinder is connected to the upper end of the injection cylinder, and the pusher rod of the pusher cylinder is placed inside the injection cylinder. This utility model provides a vertical low-pressure injection molding machine that overcomes the defects of existing injection molding machines, such as high pressure, poor injection quality, and easy leakage of glue from the injection nozzle. The vertical low-pressure injection molding machine described in the aforementioned literature has the following shortcomings: it is not securely fixed, and the positioning seat can only fix molds of the correct size, and cannot play a fixing role when injection molding molds of other sizes. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-pressure injection molding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-pressure injection molding device includes: a cabinet, with feet fixedly installed at the bottom of the cabinet, a support plate and a worktable fixedly installed on the top of the cabinet, a top plate fixedly installed on the top of the support plate, a mold clamping device provided on the worktable, a mold pressing device provided above the mold clamping device, a top hydraulic device provided below the top plate, an injection device fixedly installed below the top hydraulic device, and a lifting and stabilizing device provided on the outside of the hydraulic device and the injection device.

[0007] As a further embodiment of this utility model: the mold clamping device includes: a first fixing block, a first hydraulic cylinder, a second fixing block, a first reinforcing strip, a first hydraulic rod, and a clamping plate. The first fixing block is fixedly installed on the inner bottom of the support plate, and the second fixing block is fixedly installed on the worktable. The first hydraulic cylinder and the first reinforcing strip are fixedly installed between the first fixing block and the second fixing block. The first hydraulic rod is connected to the first hydraulic cylinder, and the clamping plate is fixedly installed at the other end of the first hydraulic rod. The first hydraulic rod can move relative to the second fixing block along its own axis.

[0008] As a further embodiment of this utility model: the mold clamping device includes: a third fixing block, a fourth fixing block, a second hydraulic cylinder, a second reinforcing strip, a second hydraulic rod, a fifth fixing block, a pressure plate, a driven rod mounting seat, and a driven rod. The third fixing block and the fifth fixing block are fixedly installed inside the support plate. The second hydraulic cylinder, the driven rod mounting seat, and the second reinforcing strip are fixedly installed between the third fixing block and the fifth fixing block. A second hydraulic rod is connected below the second hydraulic cylinder. A driven rod is connected below the driven rod mounting seat. A fifth fixing block is fixedly installed below both the second hydraulic rod and the driven rod. A pressure plate is fixedly installed below the fifth fixing block. A through hole is provided on the pressure plate. Both the second hydraulic rod and the driven rod can move relative to the fifth fixing block along their own axis.

[0009] As a further improvement of this utility model: the pressure plate has an opening through which the mold clamping device can pass, and the mold clamping device will not collide with the mold pressing device even when it reaches its stroke limit.

[0010] As a further embodiment of this utility model: the lifting and stabilizing device includes: a first fixed plate, a second fixed plate, a third reinforcing strip, and a stabilizing slide rod. The first fixed plate is fixedly installed on the lower side of the top plate. The third reinforcing strip and the stabilizing slide rod are fixedly installed between the first fixed plate and the second fixed plate. The second fixed plate has a sliding inlet, which allows the material injection device to pass through.

[0011] As a further embodiment of this utility model: the top hydraulic device includes: a hydraulic cylinder mounting base, a slide bar fixing block, a third hydraulic cylinder, a fourth reinforcing strip, a third hydraulic rod, and a sixth fixing block. The hydraulic cylinder mounting base is fixedly installed on the lower side of the first fixing plate. The third hydraulic cylinder and the fourth reinforcing strip are fixedly installed between the hydraulic cylinder mounting base and the slide bar fixing block. The third hydraulic rod is connected below the third hydraulic cylinder. The sixth fixing block is fixedly installed on the lower side of the third hydraulic rod. The third hydraulic rod can move relative to the slide bar fixing block along its own axis.

[0012] As a further embodiment of this utility model: the injection device includes: a barrel mounting base, a nozzle mounting base, an injection plastic barrel, a fifth reinforcing strip, and an injection nozzle. The barrel mounting base is fixedly installed on the lower side of the sixth fixing block. The injection plastic barrel and the fifth reinforcing strip are fixedly installed between the barrel mounting base and the nozzle mounting base. An injection nozzle is fixedly installed on the lower side of the nozzle mounting base.

[0013] As a further embodiment of this utility model: the barrel mounting base can slide up and down along the stabilizing slide bar, the injection nozzle is adapted to the mold injection port and through hole, and the injection nozzle can slide up and down relative to the mold injection port and through hole.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Using a hydraulic device with clamping plates and pressure plates to fix the mold, it is possible to process molds of various specifications.

[0016] 2. The fixed operation is simple, the device runs stably, and the work efficiency is high. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mold clamping device of this utility model;

[0019] Figure 3 This is a schematic diagram of the mold clamping device of this utility model;

[0020] Figure 4 This is a top view of the mold pressing device and mold clamping device of this utility model;

[0021] Figure 5 This is a schematic diagram of the lifting and stabilizing device of this utility model;

[0022] Figure 6 This is a schematic diagram of the top hydraulic device and the injection device of this utility model.

[0023] In the diagram: 1-Cabinet body, 2-Base, 3-Support plate, 4-Top plate, 5-Workbench, 6-Mold clamping device, 7-Mold pressing device, 8-Top hydraulic device, 9-Injection device, 10-Mold, 11-Mold injection port, 12-First fixing block, 13-First hydraulic cylinder, 14-Second fixing block, 15-First reinforcing strip, 16-First hydraulic rod, 17-Clamping plate, 18-Third fixing block, 19-Fourth fixing block, 20-Second hydraulic cylinder, 21-Second reinforcing strip, 22-Second hydraulic rod, 23-Fifth fixing block 24-Fixed block, 25-Through hole, 26-First fixed plate, 27-Second fixed plate, 28-Third reinforcing strip, 29-Stabilizing slide bar, 30-Hydraulic cylinder mounting seat, 31-Slide bar fixing block, 32-Third hydraulic cylinder, 33-Fourth reinforcing strip, 34-Third hydraulic rod, 35-Sixth fixed block, 36-Cylinder mounting seat, 37-Nose mounting seat, 38-Injection cylinder, 39-Fifth reinforcing strip, 40-Injection nozzle, 41-Line inlet, 42-Lifting and stabilizing device, 43-Driven rod mounting seat, 44-Driven rod. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] Example:

[0027] A low-pressure injection molding device, such as Figure 1-6 As shown, it includes: a cabinet 1, with base feet 2 fixedly installed at the bottom of the cabinet 1, a support plate 3 and a workbench 5 fixedly installed on the top of the cabinet 1, a top plate 4 fixedly installed on the top of the support plate 3, a mold clamping device 6 on the workbench 5, a mold pressing device 7 above the mold clamping device 6, a top hydraulic device 8 below the top plate 4, an injection device 9 fixedly installed below the top hydraulic device 8, and a lifting and stabilizing device 42 on the outside of the hydraulic device 8 and the injection device 9.

[0028] The mold clamping device 6 includes: a first fixing block 12, a first hydraulic cylinder 13, a second fixing block 14, a first reinforcing strip 15, a first hydraulic rod 16, and a clamping plate 17. The first fixing block 12 is fixedly installed on the inner bottom of the support plate 3, and the second fixing block 14 is fixedly installed on the workbench 5. The first hydraulic cylinder 13 and the first reinforcing strip 15 are fixedly installed between the first fixing block 12 and the second fixing block 14. The first hydraulic rod 16 is connected to the first hydraulic cylinder 13, and the clamping plate 17 is fixedly installed at the other end of the first hydraulic rod 16. The first hydraulic rod 16 can move relative to the second fixing block 14 along its own axis.

[0029] The mold clamping device 7 includes: a third fixing block 18, a fourth fixing block 19, a second hydraulic cylinder 20, a second reinforcing strip 21, a second hydraulic rod 22, a fifth fixing block 23, a pressure plate 24, a driven rod mounting seat 43, and a driven rod 44. The third fixing block 18 and the fifth fixing block 23 are fixedly installed inside the support plate 3. The second hydraulic cylinder 20, the driven rod mounting seat 43, and the second reinforcing strip 21 are fixedly installed between the third fixing block 18 and the fifth fixing block 23. The second hydraulic rod 22 is connected below the second hydraulic cylinder 20. The driven rod 44 is connected below the driven rod mounting seat 43. The fifth fixing block 23 is fixedly installed below both the second hydraulic rod 22 and the driven rod 44. The pressure plate 24 is fixedly installed below the fifth fixing block 23. The pressure plate 24 has a through hole 25. The second hydraulic rod 22 and the driven rod 44 can move relative to the fifth fixing block 23 along their own axis.

[0030] The pressure plate 24 has an opening that allows the mold clamping device 6 to pass through, and the mold clamping device 6 will not collide with the mold pressing device 7 even when it reaches its stroke limit.

[0031] The lifting and stabilizing device 42 includes: a first fixed plate 26, a second fixed plate 27, a third reinforcing strip 28, and a stabilizing slide bar 29. The first fixed plate 26 is fixedly installed on the lower side of the top plate 4. The third reinforcing strip 28 and the stabilizing slide bar 29 are fixedly installed between the first fixed plate 26 and the second fixed plate 27. The second fixed plate 27 has a sliding inlet 41, which allows the material injection device 9 to pass through.

[0032] The top hydraulic device 8 includes: a hydraulic cylinder mounting base 30, a slide bar fixing block 31, a third hydraulic cylinder 32, a fourth reinforcing strip 33, a third hydraulic rod 34, and a sixth fixing block 35. The hydraulic cylinder mounting base 30 is fixedly installed on the lower side of the first fixing plate 26. The third hydraulic cylinder 32 and the fourth reinforcing strip 33 are fixedly installed between the hydraulic cylinder mounting base 30 and the slide bar fixing block 31. The third hydraulic rod 34 is connected below the third hydraulic cylinder 32. The sixth fixing block 35 is fixedly installed on the lower side of the third hydraulic rod 34. The third hydraulic rod 34 can move relative to the slide bar fixing block 31 along its own axis.

[0033] The injection device 9 includes: a barrel mounting base 36, a nozzle mounting base 37, an injection cylinder 38, a fifth reinforcing strip 39, and an injection nozzle 40. The barrel mounting base 36 is fixedly installed on the lower side of the sixth fixing block 35. The injection cylinder 38 and the fifth reinforcing strip 39 are fixedly installed between the barrel mounting base 36 and the nozzle mounting base 37. The injection nozzle 40 is fixedly installed on the lower side of the nozzle mounting base 37.

[0034] The barrel mounting base 36 can slide up and down along the stabilizing slide bar 29. The injection nozzle 40 is adapted to the mold injection port 11 and the through hole 25. The injection nozzle 40 can slide up and down relative to the mold injection port 11 and the through hole 25.

[0035] Working principle: During injection molding, the heating device is first activated to heat the material inside the injection molding cylinder 38. The heating device is existing technology. The mold 10 is placed in the center position on the worktable 5. The first hydraulic cylinder 13 is activated to drive the first hydraulic rod 16 to extend and push the clamping plate 17 to clamp the mold 10. Then, the second hydraulic cylinder 20 is activated to drive the second hydraulic rod 22 and the driven rod 44 to extend and move the pressure plate 24 downward to press the mold 10. At this time, the third hydraulic cylinder 32 is activated to drive the third hydraulic rod 34 to extend and push the injection molding device. 9 moves down until the nozzle 40 reaches the designated position of the injection port 11 of the mold through the through hole 25. At this time, the injection is completed. Then, the third hydraulic cylinder 32 is started to drive the third hydraulic rod 34 to shorten and move the injection device 9 up away from the mold 10. The second hydraulic cylinder 20 is started to drive the second hydraulic rod 22 and the driven rod 44 to shorten and move the pressure plate 24 up to release the mold 10. The first hydraulic cylinder 13 is started to drive the first hydraulic rod 16 to shorten and move the clamping plate 17 to release the mold 10. At this time, the mold 10 with completed injection can be taken out.

[0036] For the parts of this utility model not disclosed in detail, those skilled in the art can ensure the smooth implementation of the solution of this utility model based on common sense, normal thinking logic and existing technology.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-pressure injection molding apparatus, comprising: The cabinet (1) is characterized in that a base foot (2) is fixedly installed at the bottom of the cabinet (1), a support plate (3) and a workbench (5) are fixedly installed on the top of the cabinet (1), a top plate (4) is fixedly installed on the top of the support plate (3), a mold clamping device (6) is provided on the workbench (5), a mold pressing device (7) is provided above the mold clamping device (6), a top hydraulic device (8) is provided below the top plate (4), an injection device (9) is fixedly installed below the top hydraulic device (8), and a lifting and stabilizing device (42) is provided on the outside of the hydraulic device (8) and the injection device (9).

2. The low-pressure injection molding device according to claim 1, characterized in that, The mold clamping device (6) includes: a first fixing block (12), a first hydraulic cylinder (13), a second fixing block (14), a first reinforcing strip (15), a first hydraulic rod (16), and a clamping plate (17). The first fixing block (12) is fixedly installed on the inner bottom of the support plate (3), and the second fixing block (14) is fixedly installed on the workbench (5). The first hydraulic cylinder (13) and the first reinforcing strip (15) are fixedly installed between the first fixing block (12) and the second fixing block (14). The first hydraulic rod (16) is connected to the first hydraulic cylinder (13), and the clamping plate (17) is fixedly installed at the other end of the first hydraulic rod (16). The first hydraulic rod (16) can move relative to the second fixing block (14) along its own axis.

3. The low-pressure injection molding device according to claim 1, characterized in that, The mold clamping device (7) includes: a third fixing block (18), a fourth fixing block (19), a second hydraulic cylinder (20), a second reinforcing strip (21), a second hydraulic rod (22), a fifth fixing block (23), a pressure plate (24), a driven rod mounting seat (43), and a driven rod (44). The third fixing block (18) and the fifth fixing block (23) are fixedly installed on the inner side of the support plate (3). The second hydraulic cylinder (20) and the driven rod mounting seat (43) are fixedly installed between the third fixing block (18) and the fifth fixing block (23). The second hydraulic cylinder (20) is connected to a second hydraulic rod (22) below the second hydraulic cylinder (20), and a driven rod (44) is connected to a driven rod mounting base (43) below the driven rod. A fifth fixing block (23) is fixedly installed below the second hydraulic rod (22) and the driven rod (44). A pressure plate (24) is fixedly installed below the fifth fixing block (23). A through hole (25) is opened on the pressure plate (24). The second hydraulic rod (22) and the driven rod (44) can move relative to the fifth fixing block (23) along their own axis.

4. A low-pressure injection molding device according to claim 3, characterized in that, The pressure plate (24) has an opening that allows the mold clamping device (6) to pass through, and the mold clamping device (6) will not collide with the mold pressing device (7) when it reaches its stroke limit.

5. A low-pressure injection molding device according to claim 1, characterized in that, The lifting and stabilizing device (42) includes: a first fixed plate (26), a second fixed plate (27), a third reinforcing strip (28), and a stabilizing slide bar (29). The first fixed plate (26) is fixedly installed on the lower side of the top plate (4). The third reinforcing strip (28) and the stabilizing slide bar (29) are fixedly installed between the first fixed plate (26) and the second fixed plate (27). The second fixed plate (27) has a sliding inlet (41) through which the material injection device (9) can pass.

6. A low-pressure injection molding apparatus according to claim 1, characterized in that, The top hydraulic device (8) includes: a hydraulic cylinder mounting base (30), a slide bar fixing block (31), a third hydraulic cylinder (32), a fourth reinforcing strip (33), a third hydraulic rod (34), and a sixth fixing block (35). The hydraulic cylinder mounting base (30) is fixedly installed on the lower side of the first fixing plate (26). The third hydraulic cylinder (32) and the fourth reinforcing strip (33) are fixedly installed between the hydraulic cylinder mounting base (30) and the slide bar fixing block (31). The third hydraulic rod (34) is connected below the third hydraulic cylinder (32). The sixth fixing block (35) is fixedly installed on the lower side of the third hydraulic rod (34). The third hydraulic rod (34) can move relative to the slide bar fixing block (31) along its own axis.

7. A low-pressure injection molding device according to claim 1, characterized in that, The injection device (9) includes: a barrel mounting base (36), a nozzle mounting base (37), an injection cylinder (38), a fifth reinforcing strip (39), and an injection nozzle (40). The barrel mounting base (36) is fixedly installed on the lower side of the sixth fixing block (35). The injection cylinder (38) and the fifth reinforcing strip (39) are fixedly installed between the barrel mounting base (36) and the nozzle mounting base (37). The injection nozzle (40) is fixedly installed on the lower side of the nozzle mounting base (37).

8. A low-pressure injection molding apparatus according to claim 7, characterized in that, The barrel mounting base (36) can slide up and down along the stabilizing slide bar (29), the injection nozzle (40) is adapted to the mold injection port (11) and through hole (25), and the injection nozzle (40) can slide up and down relative to the mold injection port (11) and through hole (25).

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