A device for cutting a water gap of a plastic injection molded part

Abstract

The utility model relates to water gap cutting device technical field especially a kind of plastic injection molding part water gap cutting device, including machine table and the upper die and lower die of being set in the upper end of the machine table, the upper end of the machine table is provided with the first drive assembly for driving the upper die movement, the upper die with the first drive assembly interval is fixed by connecting component, the lower side of the machine table is provided with the second drive assembly for driving the lower die movement, the lower die with the second drive assembly interval is fixed by fixed component, the inside of the machine table is provided with the collection component for collecting injection molding part, the utility model is connected by setting connecting component and fixed component, the separation and connection between the upper die and the first drive assembly, lower die and second drive component are realized, the design makes upper and lower mould become independent standardization module, when replacing product, operating personnel can quickly complete the replacement operation of mould without using tool.

Description

Technical Field

[0001] This utility model relates to the technical field of sprue cutting devices, and in particular to a sprue cutting device for plastic injection molded parts. Background Technology

[0002] In plastic injection molding, after demolding, the molded part usually has excess sprue attached, which needs to be removed by a special sprue cutter to obtain a complete and clean plastic product. Currently, most sprue cutters on the market are in the form of special fixtures. Their basic structure includes a base, a lower mold set on the base to support the injection molded part, and an upper mold set on the pressure plate to cut the sprue. During operation, the pressure plate is driven by pneumatic or hydraulic pressure to close the upper and lower molds, thereby using the cutting edge or structure on it to separate the sprue from the product. However, such traditional sprue cutters have a significant drawback in practical applications: the process of changing the upper and lower molds is extremely inconvenient. Due to the characteristics of rapid product iteration and large batches in injection molding production, a single sprue cutter needs to frequently change different models of upper and lower molds to adapt to the processing requirements of different products.

[0003] However, in most existing plastic injection molding sprue cutting devices, the upper and lower molds are usually directly fastened to the pressure plate and base by multiple bolts. When changing the mold, the operator must use tools to loosen and remove all the bolts one by one, remove the old mold, place the new mold, and then reposition and tighten all the bolts one by one. The entire disassembly, alignment, installation and tightening process is cumbersome and seriously affects production efficiency. Especially in the production mode of multiple varieties and small batches, the mold change time may even exceed the processing time, resulting in low equipment utilization. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings in the prior art and to propose a sprue cutting device for plastic injection molded parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for cutting sprues in plastic injection molded parts is designed, including a machine base and an upper mold and a lower mold disposed on the upper part of the machine base. A first driving component for driving the upper mold to move is disposed on the upper part of the machine base, and the upper mold is fixed to the first driving component by a connecting component. A second driving component for driving the lower mold to move is disposed on the lower side of the machine base, and the lower mold is fixed to the second driving component by a fixing component. A collection component for collecting injection molded parts is disposed inside the machine base.

[0006] Furthermore, the first drive assembly includes a mounting bracket fixedly connected to the upper end of the machine base. A first cylinder is fixedly connected to the upper end of the mounting bracket. The shaft end of the first cylinder passes through the mounting bracket and is fixedly connected to a connecting bracket. Guide rods are fixedly connected to both sides of the mounting bracket, and the connecting bracket is slidably connected between the two guide rods.

[0007] Furthermore, the connecting assembly includes a connecting column fixedly connected to the upper end of the upper mold, the upper end of the connecting column having an insertion slot, the lower end of the connecting frame having an insertion rod fixedly connected, the insertion rod being slidably connected to the insertion slot, a rotating seat fixedly connected to one side of the connecting column, a wrench rotatably connected to the rotating seat, a connecting rod rotatably connected to the wrench, and a locking block fixedly connected to one side of the connecting frame, the connecting rod engaging with the locking block.

[0008] Furthermore, the second drive assembly includes a second cylinder fixedly connected to the lower end of the machine base, a rod fixedly connected to the front end of the second cylinder, a guide rail fixedly connected to the lower side of the machine base, sliders slidably connected to both sides of the guide rail, and the rod fixedly connected to the sliders.

[0009] Furthermore, the fixing assembly includes a fixing plate fixedly connected to one side of the lower mold, a receiving groove is provided at the upper end of the rod, the fixing plate is inserted into the receiving groove, a fixing seat is fixedly connected to one side of the rod, a fixing rod is slidably connected to the fixing seat, a hole adapted to the fixing rod is provided on the fixing plate, the fixing rod is inserted into the hole, and a spring is fixedly connected between the fixing rod and the fixing seat.

[0010] Furthermore, the collection assembly includes a feeding trough located at the upper end of the machine platform, the fixing plate being slidably connected to the feeding trough, a collection box fixedly connected to the machine platform being provided on the lower side of the feeding trough, and a feeding ramp being fixedly connected to one side of the collection box.

[0011] The present invention provides a sprue cutting device for plastic injection molded parts, which has the following advantages: By setting up connecting components and fixing components, the present invention realizes the separation and connection between the upper mold and the first driving component, and between the lower mold and the second driving component. This design makes the upper and lower molds independent standardized modules. When changing products, operators can quickly complete the mold replacement operation without using tools, which improves the practicality and ease of operation of the equipment. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the first drive component structure of this utility model; Figure 3This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the second drive component structure of this utility model; Figure 5 This is a schematic diagram of the fixing component structure of this utility model; Figure 6 For the present utility model Figure 2 Schematic diagram of the structure of region A in the middle.

[0013] In the diagram: 1. Machine base; 11. Upper mold; 12. Lower mold; 2. First drive assembly; 21. Mounting bracket; 22. First cylinder; 23. Connecting bracket; 24. Guide rod; 3. Connecting assembly; 31. Connecting column; 32. Insertion slot; 33. Insertion rod; 34. Rotary seat; 35. Wrench; 36. Connecting rod; 37. Locking block; 4. Second drive assembly; 41. Second cylinder; 42. Rod; 43. Guide rail; 44. Slider; 5. Fixing assembly; 51. Fixing plate; 52. Receiving groove; 53. Fixing seat; 54. Fixing rod; 55. Spring; 6. Collecting assembly; 61. Discharge groove; 62. Collecting box; 63. Discharge slope. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-6 A device for cutting sprues in plastic injection molded parts includes a machine base 1 and an upper mold 11 and a lower mold 12 disposed on the upper end of the machine base 1. A first driving component 2 for driving the upper mold 11 to move is disposed on the upper end of the machine base 1. The upper mold 11 and the first driving component 2 are fixed together by a connecting component 3. A second driving component 4 for driving the lower mold 12 to move is disposed on the lower side of the machine base 1. The lower mold 12 and the second driving component 4 are fixed together by a fixing component 5. A collection component 6 for collecting injection molded parts is disposed inside the machine base 1.

[0016] It should be noted that the first drive assembly 2 includes a mounting frame 21 fixedly connected to the upper end of the machine base 1. A first cylinder 22 is fixedly connected to the upper end of the mounting frame 21. The shaft end of the first cylinder 22 passes through the mounting frame 21 and is fixedly connected to a connecting frame 23. Guide rods 24 are fixedly connected to both sides of the mounting frame 21. The connecting frame 23 is slidably connected between the two guide rods 24. The connecting frame 23 is moved by pushing the first cylinder 22, thereby moving the upper mold 11.

[0017] Furthermore, the connecting assembly 3 includes a connecting post 31 fixedly connected to the upper end of the upper mold 11. The upper end of the connecting post 31 is provided with a insertion groove 32. The lower end of the connecting frame 23 is fixedly connected with a insertion rod 33. The insertion rod 33 is slidably connected to the insertion groove 32. A rotating seat 34 is fixedly connected to one side of the connecting post 31. A wrench 35 is rotatably connected to the rotating seat 34. A connecting rod 36 is rotatably connected to the wrench 35. A locking block 37 is fixedly connected to one side of the connecting frame 23. The connecting rod 36 is engaged with the locking block 37.

[0018] There are two connecting posts 31 and three insertion slots 32 on each connecting post 31. The number of insertion rods 33 located on the lower side of the connecting frame 23 is the same as that of the insertion slots 32. The insertion rods 33 are inserted into the insertion slots 32 to fix the upper mold 11 and the connecting frame 23 laterally. Then, the upper mold 11 and the connecting frame 23 are positioned vertically by engaging with the locking block 37 through the connecting rods 36. The number of insertion rods 33, connecting posts 31 and insertion slots 32 can be changed according to actual needs.

[0019] The second drive assembly 4 includes a second cylinder 41 fixedly connected to the lower end of the machine base 1. A rod 42 is fixedly connected to the front end of the second cylinder 41. A guide rail 43 is fixedly connected to the lower side of the machine base 1. Slider blocks 44 are slidably connected to both sides of the guide rail 43. The rod 42 is fixedly connected to the slider 44. The second cylinder 41 pushes the rod 42 to move laterally.

[0020] In this embodiment, the fixing component 5 includes a fixing plate 51 fixedly connected to one side of the lower mold 12. The upper end of the rod 42 is provided with a receiving groove 52, and the fixing plate 51 is inserted into the receiving groove 52. A fixing seat 53 is fixedly connected to one side of the rod 42. A fixing rod 54 is slidably connected to the fixing seat 53. The fixing plate 51 is provided with a hole adapted to the fixing rod 54. The fixing rod 54 is inserted into the hole. A spring 55 is fixedly connected between the fixing rod 54 and the fixing seat 53.

[0021] The lower mold 12 is fixed to the rod 42 by means of the fixing plate 51 being inserted into the receiving groove 52 and then the fixing plate 51 being fixed by the fixing rod 54. Then the lower mold 12 is moved by means of the rod 42.

[0022] Based on the above embodiments, the collecting component 6 includes a feeding trough 61 opened on the upper end of the machine base 1, the fixing plate 51 is slidably connected to the feeding trough 61, a collecting box 62 fixedly connected to the machine base 1 is provided on the lower side of the feeding trough 61, and a feeding inclined surface 63 is fixedly connected to one side of the collecting box 62.

[0023] The injection molded part is cut off through the upper mold 11, then falls into the collection box 62 through the discharge groove 61, and is then taken out through the discharge slope 63.

[0024] Working method: During operation, the upper mold 11 and lower mold 12 are changed according to the type of injection molded part through the fixing component 5 and the connecting component 3. Then, the lower mold 12 is pushed out by the second drive component 4 and the injection molded part is placed on the upper end of the lower mold 12. Then, the lower mold 12 is moved back by the second drive component 4. After that, the upper mold 11 is moved downward by the first drive component 2 to cut the injection molded part.

[0025] 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 device for cutting sprues in plastic injection molded parts, characterized in that: The machine includes a machine base (1) and an upper mold (11) and a lower mold (12) disposed on the upper end of the machine base (1). The upper end of the machine base (1) is provided with a first drive assembly (2) for driving the upper mold (11) to move. The upper mold (11) and the first drive assembly (2) are fixed together by a connecting assembly (3). The lower side of the machine base (1) is provided with a second drive assembly (4) for driving the lower mold (12) to move. The lower mold (12) and the second drive assembly (4) are fixed together by a fixing assembly (5). The machine base (1) is provided with a collection assembly (6) for collecting injection molded parts inside.

2. The sprue cutting device for plastic injection molded parts according to claim 1, characterized in that: The first drive assembly (2) includes a mounting frame (21) fixedly connected to the upper end of the machine base (1). A first cylinder (22) is fixedly connected to the upper end of the mounting frame (21). The shaft end of the first cylinder (22) passes through the mounting frame (21) and is fixedly connected to a connecting frame (23). Guide rods (24) are fixedly connected to both sides of the mounting frame (21). The connecting frame (23) is slidably connected between the two guide rods (24).

3. The sprue cutting device for plastic injection molded parts according to claim 2, characterized in that: The connecting assembly (3) includes a connecting column (31) fixedly connected to the upper end of the upper mold (11). The upper end of the connecting column (31) is provided with a plug groove (32). The lower end of the connecting frame (23) is fixedly connected with a plug rod (33). The plug rod (33) is slidably connected to the plug groove (32). A rotating seat (34) is fixedly connected to one side of the connecting column (31). A wrench (35) is rotatably connected to the rotating seat (34). A connecting rod (36) is rotatably connected to the wrench (35). A locking block (37) is fixedly connected to one side of the connecting frame (23). The connecting rod (36) is locked to the locking block (37).

4. The sprue cutting device for plastic injection molded parts according to claim 1, characterized in that: The second drive assembly (4) includes a second cylinder (41) fixedly connected to the lower end of the machine base (1), a rod (42) fixedly connected to the front end of the second cylinder (41), a guide rail (43) fixedly connected to the lower side of the machine base (1), and sliders (44) slidably connected to both sides of the guide rail (43), and the rod (42) and the sliders (44) fixedly connected.

5. A sprue cutting device for plastic injection molded parts according to claim 4, characterized in that: The fixing component (5) includes a fixing plate (51) fixedly connected to one side of the lower mold (12). The upper end of the rod (42) is provided with a receiving groove (52). The fixing plate (51) is inserted into the receiving groove (52). A fixing seat (53) is fixedly connected to one side of the rod (42). A fixing rod (54) is slidably connected to the fixing seat (53). A hole adapted to the fixing rod (54) is provided on the fixing plate (51). The fixing rod (54) is inserted into the hole. A spring (55) is fixedly connected between the fixing rod (54) and the fixing seat (53).

6. The sprue cutting device for plastic injection molded parts according to claim 5, characterized in that: The collecting component (6) includes a feeding trough (61) opened on the upper end of the machine base (1), the fixing plate (51) is slidably connected to the feeding trough (61), a collecting box (62) fixedly connected to the machine base (1) is provided on the lower side of the feeding trough (61), and a feeding inclined surface (63) is fixedly connected to one side of the collecting box (62).

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